--- /dev/null
- static unsigned int pcnet32_portlist[] __initdata =
+/* pcnet32.c: An AMD PCnet32 ethernet driver for linux. */
+/*
+ * Copyright 1996-1999 Thomas Bogendoerfer
+ *
+ * Derived from the lance driver written 1993,1994,1995 by Donald Becker.
+ *
+ * Copyright 1993 United States Government as represented by the
+ * Director, National Security Agency.
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ * This driver is for PCnet32 and PCnetPCI based ethercards
+ */
+/**************************************************************************
+ * 23 Oct, 2000.
+ * Fixed a few bugs, related to running the controller in 32bit mode.
+ *
+ * Carsten Langgaard, carstenl@mips.com
+ * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
+ *
+ *************************************************************************/
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#define DRV_NAME "pcnet32"
+#define DRV_VERSION "1.35"
+#define DRV_RELDATE "21.Apr.2008"
+#define PFX DRV_NAME ": "
+
+static const char *const version =
+ DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " tsbogend@alpha.franken.de\n";
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/ethtool.h>
+#include <linux/mii.h>
+#include <linux/crc32.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/if_ether.h>
+#include <linux/skbuff.h>
+#include <linux/spinlock.h>
+#include <linux/moduleparam.h>
+#include <linux/bitops.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
+
+#include <asm/dma.h>
+#include <asm/irq.h>
+
+/*
+ * PCI device identifiers for "new style" Linux PCI Device Drivers
+ */
+static DEFINE_PCI_DEVICE_TABLE(pcnet32_pci_tbl) = {
+ { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LANCE_HOME), },
+ { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LANCE), },
+
+ /*
+ * Adapters that were sold with IBM's RS/6000 or pSeries hardware have
+ * the incorrect vendor id.
+ */
+ { PCI_DEVICE(PCI_VENDOR_ID_TRIDENT, PCI_DEVICE_ID_AMD_LANCE),
+ .class = (PCI_CLASS_NETWORK_ETHERNET << 8), .class_mask = 0xffff00, },
+
+ { } /* terminate list */
+};
+
+MODULE_DEVICE_TABLE(pci, pcnet32_pci_tbl);
+
+static int cards_found;
+
+/*
+ * VLB I/O addresses
+ */
++static unsigned int pcnet32_portlist[] =
+ { 0x300, 0x320, 0x340, 0x360, 0 };
+
+static int pcnet32_debug;
+static int tx_start = 1; /* Mapping -- 0:20, 1:64, 2:128, 3:~220 (depends on chip vers) */
+static int pcnet32vlb; /* check for VLB cards ? */
+
+static struct net_device *pcnet32_dev;
+
+static int max_interrupt_work = 2;
+static int rx_copybreak = 200;
+
+#define PCNET32_PORT_AUI 0x00
+#define PCNET32_PORT_10BT 0x01
+#define PCNET32_PORT_GPSI 0x02
+#define PCNET32_PORT_MII 0x03
+
+#define PCNET32_PORT_PORTSEL 0x03
+#define PCNET32_PORT_ASEL 0x04
+#define PCNET32_PORT_100 0x40
+#define PCNET32_PORT_FD 0x80
+
+#define PCNET32_DMA_MASK 0xffffffff
+
+#define PCNET32_WATCHDOG_TIMEOUT (jiffies + (2 * HZ))
+#define PCNET32_BLINK_TIMEOUT (jiffies + (HZ/4))
+
+/*
+ * table to translate option values from tulip
+ * to internal options
+ */
+static const unsigned char options_mapping[] = {
+ PCNET32_PORT_ASEL, /* 0 Auto-select */
+ PCNET32_PORT_AUI, /* 1 BNC/AUI */
+ PCNET32_PORT_AUI, /* 2 AUI/BNC */
+ PCNET32_PORT_ASEL, /* 3 not supported */
+ PCNET32_PORT_10BT | PCNET32_PORT_FD, /* 4 10baseT-FD */
+ PCNET32_PORT_ASEL, /* 5 not supported */
+ PCNET32_PORT_ASEL, /* 6 not supported */
+ PCNET32_PORT_ASEL, /* 7 not supported */
+ PCNET32_PORT_ASEL, /* 8 not supported */
+ PCNET32_PORT_MII, /* 9 MII 10baseT */
+ PCNET32_PORT_MII | PCNET32_PORT_FD, /* 10 MII 10baseT-FD */
+ PCNET32_PORT_MII, /* 11 MII (autosel) */
+ PCNET32_PORT_10BT, /* 12 10BaseT */
+ PCNET32_PORT_MII | PCNET32_PORT_100, /* 13 MII 100BaseTx */
+ /* 14 MII 100BaseTx-FD */
+ PCNET32_PORT_MII | PCNET32_PORT_100 | PCNET32_PORT_FD,
+ PCNET32_PORT_ASEL /* 15 not supported */
+};
+
+static const char pcnet32_gstrings_test[][ETH_GSTRING_LEN] = {
+ "Loopback test (offline)"
+};
+
+#define PCNET32_TEST_LEN ARRAY_SIZE(pcnet32_gstrings_test)
+
+#define PCNET32_NUM_REGS 136
+
+#define MAX_UNITS 8 /* More are supported, limit only on options */
+static int options[MAX_UNITS];
+static int full_duplex[MAX_UNITS];
+static int homepna[MAX_UNITS];
+
+/*
+ * Theory of Operation
+ *
+ * This driver uses the same software structure as the normal lance
+ * driver. So look for a verbose description in lance.c. The differences
+ * to the normal lance driver is the use of the 32bit mode of PCnet32
+ * and PCnetPCI chips. Because these chips are 32bit chips, there is no
+ * 16MB limitation and we don't need bounce buffers.
+ */
+
+/*
+ * Set the number of Tx and Rx buffers, using Log_2(# buffers).
+ * Reasonable default values are 4 Tx buffers, and 16 Rx buffers.
+ * That translates to 2 (4 == 2^^2) and 4 (16 == 2^^4).
+ */
+#ifndef PCNET32_LOG_TX_BUFFERS
+#define PCNET32_LOG_TX_BUFFERS 4
+#define PCNET32_LOG_RX_BUFFERS 5
+#define PCNET32_LOG_MAX_TX_BUFFERS 9 /* 2^9 == 512 */
+#define PCNET32_LOG_MAX_RX_BUFFERS 9
+#endif
+
+#define TX_RING_SIZE (1 << (PCNET32_LOG_TX_BUFFERS))
+#define TX_MAX_RING_SIZE (1 << (PCNET32_LOG_MAX_TX_BUFFERS))
+
+#define RX_RING_SIZE (1 << (PCNET32_LOG_RX_BUFFERS))
+#define RX_MAX_RING_SIZE (1 << (PCNET32_LOG_MAX_RX_BUFFERS))
+
+#define PKT_BUF_SKB 1544
+/* actual buffer length after being aligned */
+#define PKT_BUF_SIZE (PKT_BUF_SKB - NET_IP_ALIGN)
+/* chip wants twos complement of the (aligned) buffer length */
+#define NEG_BUF_SIZE (NET_IP_ALIGN - PKT_BUF_SKB)
+
+/* Offsets from base I/O address. */
+#define PCNET32_WIO_RDP 0x10
+#define PCNET32_WIO_RAP 0x12
+#define PCNET32_WIO_RESET 0x14
+#define PCNET32_WIO_BDP 0x16
+
+#define PCNET32_DWIO_RDP 0x10
+#define PCNET32_DWIO_RAP 0x14
+#define PCNET32_DWIO_RESET 0x18
+#define PCNET32_DWIO_BDP 0x1C
+
+#define PCNET32_TOTAL_SIZE 0x20
+
+#define CSR0 0
+#define CSR0_INIT 0x1
+#define CSR0_START 0x2
+#define CSR0_STOP 0x4
+#define CSR0_TXPOLL 0x8
+#define CSR0_INTEN 0x40
+#define CSR0_IDON 0x0100
+#define CSR0_NORMAL (CSR0_START | CSR0_INTEN)
+#define PCNET32_INIT_LOW 1
+#define PCNET32_INIT_HIGH 2
+#define CSR3 3
+#define CSR4 4
+#define CSR5 5
+#define CSR5_SUSPEND 0x0001
+#define CSR15 15
+#define PCNET32_MC_FILTER 8
+
+#define PCNET32_79C970A 0x2621
+
+/* The PCNET32 Rx and Tx ring descriptors. */
+struct pcnet32_rx_head {
+ __le32 base;
+ __le16 buf_length; /* two`s complement of length */
+ __le16 status;
+ __le32 msg_length;
+ __le32 reserved;
+};
+
+struct pcnet32_tx_head {
+ __le32 base;
+ __le16 length; /* two`s complement of length */
+ __le16 status;
+ __le32 misc;
+ __le32 reserved;
+};
+
+/* The PCNET32 32-Bit initialization block, described in databook. */
+struct pcnet32_init_block {
+ __le16 mode;
+ __le16 tlen_rlen;
+ u8 phys_addr[6];
+ __le16 reserved;
+ __le32 filter[2];
+ /* Receive and transmit ring base, along with extra bits. */
+ __le32 rx_ring;
+ __le32 tx_ring;
+};
+
+/* PCnet32 access functions */
+struct pcnet32_access {
+ u16 (*read_csr) (unsigned long, int);
+ void (*write_csr) (unsigned long, int, u16);
+ u16 (*read_bcr) (unsigned long, int);
+ void (*write_bcr) (unsigned long, int, u16);
+ u16 (*read_rap) (unsigned long);
+ void (*write_rap) (unsigned long, u16);
+ void (*reset) (unsigned long);
+};
+
+/*
+ * The first field of pcnet32_private is read by the ethernet device
+ * so the structure should be allocated using pci_alloc_consistent().
+ */
+struct pcnet32_private {
+ struct pcnet32_init_block *init_block;
+ /* The Tx and Rx ring entries must be aligned on 16-byte boundaries in 32bit mode. */
+ struct pcnet32_rx_head *rx_ring;
+ struct pcnet32_tx_head *tx_ring;
+ dma_addr_t init_dma_addr;/* DMA address of beginning of the init block,
+ returned by pci_alloc_consistent */
+ struct pci_dev *pci_dev;
+ const char *name;
+ /* The saved address of a sent-in-place packet/buffer, for skfree(). */
+ struct sk_buff **tx_skbuff;
+ struct sk_buff **rx_skbuff;
+ dma_addr_t *tx_dma_addr;
+ dma_addr_t *rx_dma_addr;
+ struct pcnet32_access a;
+ spinlock_t lock; /* Guard lock */
+ unsigned int cur_rx, cur_tx; /* The next free ring entry */
+ unsigned int rx_ring_size; /* current rx ring size */
+ unsigned int tx_ring_size; /* current tx ring size */
+ unsigned int rx_mod_mask; /* rx ring modular mask */
+ unsigned int tx_mod_mask; /* tx ring modular mask */
+ unsigned short rx_len_bits;
+ unsigned short tx_len_bits;
+ dma_addr_t rx_ring_dma_addr;
+ dma_addr_t tx_ring_dma_addr;
+ unsigned int dirty_rx, /* ring entries to be freed. */
+ dirty_tx;
+
+ struct net_device *dev;
+ struct napi_struct napi;
+ char tx_full;
+ char phycount; /* number of phys found */
+ int options;
+ unsigned int shared_irq:1, /* shared irq possible */
+ dxsuflo:1, /* disable transmit stop on uflo */
+ mii:1; /* mii port available */
+ struct net_device *next;
+ struct mii_if_info mii_if;
+ struct timer_list watchdog_timer;
+ u32 msg_enable; /* debug message level */
+
+ /* each bit indicates an available PHY */
+ u32 phymask;
+ unsigned short chip_version; /* which variant this is */
+
+ /* saved registers during ethtool blink */
+ u16 save_regs[4];
+};
+
+static int pcnet32_probe_pci(struct pci_dev *, const struct pci_device_id *);
+static int pcnet32_probe1(unsigned long, int, struct pci_dev *);
+static int pcnet32_open(struct net_device *);
+static int pcnet32_init_ring(struct net_device *);
+static netdev_tx_t pcnet32_start_xmit(struct sk_buff *,
+ struct net_device *);
+static void pcnet32_tx_timeout(struct net_device *dev);
+static irqreturn_t pcnet32_interrupt(int, void *);
+static int pcnet32_close(struct net_device *);
+static struct net_device_stats *pcnet32_get_stats(struct net_device *);
+static void pcnet32_load_multicast(struct net_device *dev);
+static void pcnet32_set_multicast_list(struct net_device *);
+static int pcnet32_ioctl(struct net_device *, struct ifreq *, int);
+static void pcnet32_watchdog(struct net_device *);
+static int mdio_read(struct net_device *dev, int phy_id, int reg_num);
+static void mdio_write(struct net_device *dev, int phy_id, int reg_num,
+ int val);
+static void pcnet32_restart(struct net_device *dev, unsigned int csr0_bits);
+static void pcnet32_ethtool_test(struct net_device *dev,
+ struct ethtool_test *eth_test, u64 * data);
+static int pcnet32_loopback_test(struct net_device *dev, uint64_t * data1);
+static int pcnet32_get_regs_len(struct net_device *dev);
+static void pcnet32_get_regs(struct net_device *dev, struct ethtool_regs *regs,
+ void *ptr);
+static void pcnet32_purge_tx_ring(struct net_device *dev);
+static int pcnet32_alloc_ring(struct net_device *dev, const char *name);
+static void pcnet32_free_ring(struct net_device *dev);
+static void pcnet32_check_media(struct net_device *dev, int verbose);
+
+static u16 pcnet32_wio_read_csr(unsigned long addr, int index)
+{
+ outw(index, addr + PCNET32_WIO_RAP);
+ return inw(addr + PCNET32_WIO_RDP);
+}
+
+static void pcnet32_wio_write_csr(unsigned long addr, int index, u16 val)
+{
+ outw(index, addr + PCNET32_WIO_RAP);
+ outw(val, addr + PCNET32_WIO_RDP);
+}
+
+static u16 pcnet32_wio_read_bcr(unsigned long addr, int index)
+{
+ outw(index, addr + PCNET32_WIO_RAP);
+ return inw(addr + PCNET32_WIO_BDP);
+}
+
+static void pcnet32_wio_write_bcr(unsigned long addr, int index, u16 val)
+{
+ outw(index, addr + PCNET32_WIO_RAP);
+ outw(val, addr + PCNET32_WIO_BDP);
+}
+
+static u16 pcnet32_wio_read_rap(unsigned long addr)
+{
+ return inw(addr + PCNET32_WIO_RAP);
+}
+
+static void pcnet32_wio_write_rap(unsigned long addr, u16 val)
+{
+ outw(val, addr + PCNET32_WIO_RAP);
+}
+
+static void pcnet32_wio_reset(unsigned long addr)
+{
+ inw(addr + PCNET32_WIO_RESET);
+}
+
+static int pcnet32_wio_check(unsigned long addr)
+{
+ outw(88, addr + PCNET32_WIO_RAP);
+ return inw(addr + PCNET32_WIO_RAP) == 88;
+}
+
+static struct pcnet32_access pcnet32_wio = {
+ .read_csr = pcnet32_wio_read_csr,
+ .write_csr = pcnet32_wio_write_csr,
+ .read_bcr = pcnet32_wio_read_bcr,
+ .write_bcr = pcnet32_wio_write_bcr,
+ .read_rap = pcnet32_wio_read_rap,
+ .write_rap = pcnet32_wio_write_rap,
+ .reset = pcnet32_wio_reset
+};
+
+static u16 pcnet32_dwio_read_csr(unsigned long addr, int index)
+{
+ outl(index, addr + PCNET32_DWIO_RAP);
+ return inl(addr + PCNET32_DWIO_RDP) & 0xffff;
+}
+
+static void pcnet32_dwio_write_csr(unsigned long addr, int index, u16 val)
+{
+ outl(index, addr + PCNET32_DWIO_RAP);
+ outl(val, addr + PCNET32_DWIO_RDP);
+}
+
+static u16 pcnet32_dwio_read_bcr(unsigned long addr, int index)
+{
+ outl(index, addr + PCNET32_DWIO_RAP);
+ return inl(addr + PCNET32_DWIO_BDP) & 0xffff;
+}
+
+static void pcnet32_dwio_write_bcr(unsigned long addr, int index, u16 val)
+{
+ outl(index, addr + PCNET32_DWIO_RAP);
+ outl(val, addr + PCNET32_DWIO_BDP);
+}
+
+static u16 pcnet32_dwio_read_rap(unsigned long addr)
+{
+ return inl(addr + PCNET32_DWIO_RAP) & 0xffff;
+}
+
+static void pcnet32_dwio_write_rap(unsigned long addr, u16 val)
+{
+ outl(val, addr + PCNET32_DWIO_RAP);
+}
+
+static void pcnet32_dwio_reset(unsigned long addr)
+{
+ inl(addr + PCNET32_DWIO_RESET);
+}
+
+static int pcnet32_dwio_check(unsigned long addr)
+{
+ outl(88, addr + PCNET32_DWIO_RAP);
+ return (inl(addr + PCNET32_DWIO_RAP) & 0xffff) == 88;
+}
+
+static struct pcnet32_access pcnet32_dwio = {
+ .read_csr = pcnet32_dwio_read_csr,
+ .write_csr = pcnet32_dwio_write_csr,
+ .read_bcr = pcnet32_dwio_read_bcr,
+ .write_bcr = pcnet32_dwio_write_bcr,
+ .read_rap = pcnet32_dwio_read_rap,
+ .write_rap = pcnet32_dwio_write_rap,
+ .reset = pcnet32_dwio_reset
+};
+
+static void pcnet32_netif_stop(struct net_device *dev)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+
+ dev->trans_start = jiffies; /* prevent tx timeout */
+ napi_disable(&lp->napi);
+ netif_tx_disable(dev);
+}
+
+static void pcnet32_netif_start(struct net_device *dev)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ ulong ioaddr = dev->base_addr;
+ u16 val;
+
+ netif_wake_queue(dev);
+ val = lp->a.read_csr(ioaddr, CSR3);
+ val &= 0x00ff;
+ lp->a.write_csr(ioaddr, CSR3, val);
+ napi_enable(&lp->napi);
+}
+
+/*
+ * Allocate space for the new sized tx ring.
+ * Free old resources
+ * Save new resources.
+ * Any failure keeps old resources.
+ * Must be called with lp->lock held.
+ */
+static void pcnet32_realloc_tx_ring(struct net_device *dev,
+ struct pcnet32_private *lp,
+ unsigned int size)
+{
+ dma_addr_t new_ring_dma_addr;
+ dma_addr_t *new_dma_addr_list;
+ struct pcnet32_tx_head *new_tx_ring;
+ struct sk_buff **new_skb_list;
+
+ pcnet32_purge_tx_ring(dev);
+
+ new_tx_ring = pci_alloc_consistent(lp->pci_dev,
+ sizeof(struct pcnet32_tx_head) *
+ (1 << size),
+ &new_ring_dma_addr);
+ if (new_tx_ring == NULL) {
+ netif_err(lp, drv, dev, "Consistent memory allocation failed\n");
+ return;
+ }
+ memset(new_tx_ring, 0, sizeof(struct pcnet32_tx_head) * (1 << size));
+
+ new_dma_addr_list = kcalloc((1 << size), sizeof(dma_addr_t),
+ GFP_ATOMIC);
+ if (!new_dma_addr_list) {
+ netif_err(lp, drv, dev, "Memory allocation failed\n");
+ goto free_new_tx_ring;
+ }
+
+ new_skb_list = kcalloc((1 << size), sizeof(struct sk_buff *),
+ GFP_ATOMIC);
+ if (!new_skb_list) {
+ netif_err(lp, drv, dev, "Memory allocation failed\n");
+ goto free_new_lists;
+ }
+
+ kfree(lp->tx_skbuff);
+ kfree(lp->tx_dma_addr);
+ pci_free_consistent(lp->pci_dev,
+ sizeof(struct pcnet32_tx_head) *
+ lp->tx_ring_size, lp->tx_ring,
+ lp->tx_ring_dma_addr);
+
+ lp->tx_ring_size = (1 << size);
+ lp->tx_mod_mask = lp->tx_ring_size - 1;
+ lp->tx_len_bits = (size << 12);
+ lp->tx_ring = new_tx_ring;
+ lp->tx_ring_dma_addr = new_ring_dma_addr;
+ lp->tx_dma_addr = new_dma_addr_list;
+ lp->tx_skbuff = new_skb_list;
+ return;
+
+free_new_lists:
+ kfree(new_dma_addr_list);
+free_new_tx_ring:
+ pci_free_consistent(lp->pci_dev,
+ sizeof(struct pcnet32_tx_head) *
+ (1 << size),
+ new_tx_ring,
+ new_ring_dma_addr);
+}
+
+/*
+ * Allocate space for the new sized rx ring.
+ * Re-use old receive buffers.
+ * alloc extra buffers
+ * free unneeded buffers
+ * free unneeded buffers
+ * Save new resources.
+ * Any failure keeps old resources.
+ * Must be called with lp->lock held.
+ */
+static void pcnet32_realloc_rx_ring(struct net_device *dev,
+ struct pcnet32_private *lp,
+ unsigned int size)
+{
+ dma_addr_t new_ring_dma_addr;
+ dma_addr_t *new_dma_addr_list;
+ struct pcnet32_rx_head *new_rx_ring;
+ struct sk_buff **new_skb_list;
+ int new, overlap;
+
+ new_rx_ring = pci_alloc_consistent(lp->pci_dev,
+ sizeof(struct pcnet32_rx_head) *
+ (1 << size),
+ &new_ring_dma_addr);
+ if (new_rx_ring == NULL) {
+ netif_err(lp, drv, dev, "Consistent memory allocation failed\n");
+ return;
+ }
+ memset(new_rx_ring, 0, sizeof(struct pcnet32_rx_head) * (1 << size));
+
+ new_dma_addr_list = kcalloc((1 << size), sizeof(dma_addr_t),
+ GFP_ATOMIC);
+ if (!new_dma_addr_list) {
+ netif_err(lp, drv, dev, "Memory allocation failed\n");
+ goto free_new_rx_ring;
+ }
+
+ new_skb_list = kcalloc((1 << size), sizeof(struct sk_buff *),
+ GFP_ATOMIC);
+ if (!new_skb_list) {
+ netif_err(lp, drv, dev, "Memory allocation failed\n");
+ goto free_new_lists;
+ }
+
+ /* first copy the current receive buffers */
+ overlap = min(size, lp->rx_ring_size);
+ for (new = 0; new < overlap; new++) {
+ new_rx_ring[new] = lp->rx_ring[new];
+ new_dma_addr_list[new] = lp->rx_dma_addr[new];
+ new_skb_list[new] = lp->rx_skbuff[new];
+ }
+ /* now allocate any new buffers needed */
+ for (; new < size; new++) {
+ struct sk_buff *rx_skbuff;
+ new_skb_list[new] = dev_alloc_skb(PKT_BUF_SKB);
+ rx_skbuff = new_skb_list[new];
+ if (!rx_skbuff) {
+ /* keep the original lists and buffers */
+ netif_err(lp, drv, dev, "%s dev_alloc_skb failed\n",
+ __func__);
+ goto free_all_new;
+ }
+ skb_reserve(rx_skbuff, NET_IP_ALIGN);
+
+ new_dma_addr_list[new] =
+ pci_map_single(lp->pci_dev, rx_skbuff->data,
+ PKT_BUF_SIZE, PCI_DMA_FROMDEVICE);
+ new_rx_ring[new].base = cpu_to_le32(new_dma_addr_list[new]);
+ new_rx_ring[new].buf_length = cpu_to_le16(NEG_BUF_SIZE);
+ new_rx_ring[new].status = cpu_to_le16(0x8000);
+ }
+ /* and free any unneeded buffers */
+ for (; new < lp->rx_ring_size; new++) {
+ if (lp->rx_skbuff[new]) {
+ pci_unmap_single(lp->pci_dev, lp->rx_dma_addr[new],
+ PKT_BUF_SIZE, PCI_DMA_FROMDEVICE);
+ dev_kfree_skb(lp->rx_skbuff[new]);
+ }
+ }
+
+ kfree(lp->rx_skbuff);
+ kfree(lp->rx_dma_addr);
+ pci_free_consistent(lp->pci_dev,
+ sizeof(struct pcnet32_rx_head) *
+ lp->rx_ring_size, lp->rx_ring,
+ lp->rx_ring_dma_addr);
+
+ lp->rx_ring_size = (1 << size);
+ lp->rx_mod_mask = lp->rx_ring_size - 1;
+ lp->rx_len_bits = (size << 4);
+ lp->rx_ring = new_rx_ring;
+ lp->rx_ring_dma_addr = new_ring_dma_addr;
+ lp->rx_dma_addr = new_dma_addr_list;
+ lp->rx_skbuff = new_skb_list;
+ return;
+
+free_all_new:
+ while (--new >= lp->rx_ring_size) {
+ if (new_skb_list[new]) {
+ pci_unmap_single(lp->pci_dev, new_dma_addr_list[new],
+ PKT_BUF_SIZE, PCI_DMA_FROMDEVICE);
+ dev_kfree_skb(new_skb_list[new]);
+ }
+ }
+ kfree(new_skb_list);
+free_new_lists:
+ kfree(new_dma_addr_list);
+free_new_rx_ring:
+ pci_free_consistent(lp->pci_dev,
+ sizeof(struct pcnet32_rx_head) *
+ (1 << size),
+ new_rx_ring,
+ new_ring_dma_addr);
+}
+
+static void pcnet32_purge_rx_ring(struct net_device *dev)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ int i;
+
+ /* free all allocated skbuffs */
+ for (i = 0; i < lp->rx_ring_size; i++) {
+ lp->rx_ring[i].status = 0; /* CPU owns buffer */
+ wmb(); /* Make sure adapter sees owner change */
+ if (lp->rx_skbuff[i]) {
+ pci_unmap_single(lp->pci_dev, lp->rx_dma_addr[i],
+ PKT_BUF_SIZE, PCI_DMA_FROMDEVICE);
+ dev_kfree_skb_any(lp->rx_skbuff[i]);
+ }
+ lp->rx_skbuff[i] = NULL;
+ lp->rx_dma_addr[i] = 0;
+ }
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void pcnet32_poll_controller(struct net_device *dev)
+{
+ disable_irq(dev->irq);
+ pcnet32_interrupt(0, dev);
+ enable_irq(dev->irq);
+}
+#endif
+
+static int pcnet32_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ unsigned long flags;
+ int r = -EOPNOTSUPP;
+
+ if (lp->mii) {
+ spin_lock_irqsave(&lp->lock, flags);
+ mii_ethtool_gset(&lp->mii_if, cmd);
+ spin_unlock_irqrestore(&lp->lock, flags);
+ r = 0;
+ }
+ return r;
+}
+
+static int pcnet32_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ unsigned long flags;
+ int r = -EOPNOTSUPP;
+
+ if (lp->mii) {
+ spin_lock_irqsave(&lp->lock, flags);
+ r = mii_ethtool_sset(&lp->mii_if, cmd);
+ spin_unlock_irqrestore(&lp->lock, flags);
+ }
+ return r;
+}
+
+static void pcnet32_get_drvinfo(struct net_device *dev,
+ struct ethtool_drvinfo *info)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+
+ strcpy(info->driver, DRV_NAME);
+ strcpy(info->version, DRV_VERSION);
+ if (lp->pci_dev)
+ strcpy(info->bus_info, pci_name(lp->pci_dev));
+ else
+ sprintf(info->bus_info, "VLB 0x%lx", dev->base_addr);
+}
+
+static u32 pcnet32_get_link(struct net_device *dev)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ unsigned long flags;
+ int r;
+
+ spin_lock_irqsave(&lp->lock, flags);
+ if (lp->mii) {
+ r = mii_link_ok(&lp->mii_if);
+ } else if (lp->chip_version >= PCNET32_79C970A) {
+ ulong ioaddr = dev->base_addr; /* card base I/O address */
+ r = (lp->a.read_bcr(ioaddr, 4) != 0xc0);
+ } else { /* can not detect link on really old chips */
+ r = 1;
+ }
+ spin_unlock_irqrestore(&lp->lock, flags);
+
+ return r;
+}
+
+static u32 pcnet32_get_msglevel(struct net_device *dev)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ return lp->msg_enable;
+}
+
+static void pcnet32_set_msglevel(struct net_device *dev, u32 value)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ lp->msg_enable = value;
+}
+
+static int pcnet32_nway_reset(struct net_device *dev)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ unsigned long flags;
+ int r = -EOPNOTSUPP;
+
+ if (lp->mii) {
+ spin_lock_irqsave(&lp->lock, flags);
+ r = mii_nway_restart(&lp->mii_if);
+ spin_unlock_irqrestore(&lp->lock, flags);
+ }
+ return r;
+}
+
+static void pcnet32_get_ringparam(struct net_device *dev,
+ struct ethtool_ringparam *ering)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+
+ ering->tx_max_pending = TX_MAX_RING_SIZE;
+ ering->tx_pending = lp->tx_ring_size;
+ ering->rx_max_pending = RX_MAX_RING_SIZE;
+ ering->rx_pending = lp->rx_ring_size;
+}
+
+static int pcnet32_set_ringparam(struct net_device *dev,
+ struct ethtool_ringparam *ering)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ unsigned long flags;
+ unsigned int size;
+ ulong ioaddr = dev->base_addr;
+ int i;
+
+ if (ering->rx_mini_pending || ering->rx_jumbo_pending)
+ return -EINVAL;
+
+ if (netif_running(dev))
+ pcnet32_netif_stop(dev);
+
+ spin_lock_irqsave(&lp->lock, flags);
+ lp->a.write_csr(ioaddr, CSR0, CSR0_STOP); /* stop the chip */
+
+ size = min(ering->tx_pending, (unsigned int)TX_MAX_RING_SIZE);
+
+ /* set the minimum ring size to 4, to allow the loopback test to work
+ * unchanged.
+ */
+ for (i = 2; i <= PCNET32_LOG_MAX_TX_BUFFERS; i++) {
+ if (size <= (1 << i))
+ break;
+ }
+ if ((1 << i) != lp->tx_ring_size)
+ pcnet32_realloc_tx_ring(dev, lp, i);
+
+ size = min(ering->rx_pending, (unsigned int)RX_MAX_RING_SIZE);
+ for (i = 2; i <= PCNET32_LOG_MAX_RX_BUFFERS; i++) {
+ if (size <= (1 << i))
+ break;
+ }
+ if ((1 << i) != lp->rx_ring_size)
+ pcnet32_realloc_rx_ring(dev, lp, i);
+
+ lp->napi.weight = lp->rx_ring_size / 2;
+
+ if (netif_running(dev)) {
+ pcnet32_netif_start(dev);
+ pcnet32_restart(dev, CSR0_NORMAL);
+ }
+
+ spin_unlock_irqrestore(&lp->lock, flags);
+
+ netif_info(lp, drv, dev, "Ring Param Settings: RX: %d, TX: %d\n",
+ lp->rx_ring_size, lp->tx_ring_size);
+
+ return 0;
+}
+
+static void pcnet32_get_strings(struct net_device *dev, u32 stringset,
+ u8 *data)
+{
+ memcpy(data, pcnet32_gstrings_test, sizeof(pcnet32_gstrings_test));
+}
+
+static int pcnet32_get_sset_count(struct net_device *dev, int sset)
+{
+ switch (sset) {
+ case ETH_SS_TEST:
+ return PCNET32_TEST_LEN;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static void pcnet32_ethtool_test(struct net_device *dev,
+ struct ethtool_test *test, u64 * data)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ int rc;
+
+ if (test->flags == ETH_TEST_FL_OFFLINE) {
+ rc = pcnet32_loopback_test(dev, data);
+ if (rc) {
+ netif_printk(lp, hw, KERN_DEBUG, dev,
+ "Loopback test failed\n");
+ test->flags |= ETH_TEST_FL_FAILED;
+ } else
+ netif_printk(lp, hw, KERN_DEBUG, dev,
+ "Loopback test passed\n");
+ } else
+ netif_printk(lp, hw, KERN_DEBUG, dev,
+ "No tests to run (specify 'Offline' on ethtool)\n");
+} /* end pcnet32_ethtool_test */
+
+static int pcnet32_loopback_test(struct net_device *dev, uint64_t * data1)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ struct pcnet32_access *a = &lp->a; /* access to registers */
+ ulong ioaddr = dev->base_addr; /* card base I/O address */
+ struct sk_buff *skb; /* sk buff */
+ int x, i; /* counters */
+ int numbuffs = 4; /* number of TX/RX buffers and descs */
+ u16 status = 0x8300; /* TX ring status */
+ __le16 teststatus; /* test of ring status */
+ int rc; /* return code */
+ int size; /* size of packets */
+ unsigned char *packet; /* source packet data */
+ static const int data_len = 60; /* length of source packets */
+ unsigned long flags;
+ unsigned long ticks;
+
+ rc = 1; /* default to fail */
+
+ if (netif_running(dev))
+ pcnet32_netif_stop(dev);
+
+ spin_lock_irqsave(&lp->lock, flags);
+ lp->a.write_csr(ioaddr, CSR0, CSR0_STOP); /* stop the chip */
+
+ numbuffs = min(numbuffs, (int)min(lp->rx_ring_size, lp->tx_ring_size));
+
+ /* Reset the PCNET32 */
+ lp->a.reset(ioaddr);
+ lp->a.write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */
+
+ /* switch pcnet32 to 32bit mode */
+ lp->a.write_bcr(ioaddr, 20, 2);
+
+ /* purge & init rings but don't actually restart */
+ pcnet32_restart(dev, 0x0000);
+
+ lp->a.write_csr(ioaddr, CSR0, CSR0_STOP); /* Set STOP bit */
+
+ /* Initialize Transmit buffers. */
+ size = data_len + 15;
+ for (x = 0; x < numbuffs; x++) {
+ skb = dev_alloc_skb(size);
+ if (!skb) {
+ netif_printk(lp, hw, KERN_DEBUG, dev,
+ "Cannot allocate skb at line: %d!\n",
+ __LINE__);
+ goto clean_up;
+ }
+ packet = skb->data;
+ skb_put(skb, size); /* create space for data */
+ lp->tx_skbuff[x] = skb;
+ lp->tx_ring[x].length = cpu_to_le16(-skb->len);
+ lp->tx_ring[x].misc = 0;
+
+ /* put DA and SA into the skb */
+ for (i = 0; i < 6; i++)
+ *packet++ = dev->dev_addr[i];
+ for (i = 0; i < 6; i++)
+ *packet++ = dev->dev_addr[i];
+ /* type */
+ *packet++ = 0x08;
+ *packet++ = 0x06;
+ /* packet number */
+ *packet++ = x;
+ /* fill packet with data */
+ for (i = 0; i < data_len; i++)
+ *packet++ = i;
+
+ lp->tx_dma_addr[x] =
+ pci_map_single(lp->pci_dev, skb->data, skb->len,
+ PCI_DMA_TODEVICE);
+ lp->tx_ring[x].base = cpu_to_le32(lp->tx_dma_addr[x]);
+ wmb(); /* Make sure owner changes after all others are visible */
+ lp->tx_ring[x].status = cpu_to_le16(status);
+ }
+
+ x = a->read_bcr(ioaddr, 32); /* set internal loopback in BCR32 */
+ a->write_bcr(ioaddr, 32, x | 0x0002);
+
+ /* set int loopback in CSR15 */
+ x = a->read_csr(ioaddr, CSR15) & 0xfffc;
+ lp->a.write_csr(ioaddr, CSR15, x | 0x0044);
+
+ teststatus = cpu_to_le16(0x8000);
+ lp->a.write_csr(ioaddr, CSR0, CSR0_START); /* Set STRT bit */
+
+ /* Check status of descriptors */
+ for (x = 0; x < numbuffs; x++) {
+ ticks = 0;
+ rmb();
+ while ((lp->rx_ring[x].status & teststatus) && (ticks < 200)) {
+ spin_unlock_irqrestore(&lp->lock, flags);
+ msleep(1);
+ spin_lock_irqsave(&lp->lock, flags);
+ rmb();
+ ticks++;
+ }
+ if (ticks == 200) {
+ netif_err(lp, hw, dev, "Desc %d failed to reset!\n", x);
+ break;
+ }
+ }
+
+ lp->a.write_csr(ioaddr, CSR0, CSR0_STOP); /* Set STOP bit */
+ wmb();
+ if (netif_msg_hw(lp) && netif_msg_pktdata(lp)) {
+ netdev_printk(KERN_DEBUG, dev, "RX loopback packets:\n");
+
+ for (x = 0; x < numbuffs; x++) {
+ netdev_printk(KERN_DEBUG, dev, "Packet %d: ", x);
+ skb = lp->rx_skbuff[x];
+ for (i = 0; i < size; i++)
+ pr_cont(" %02x", *(skb->data + i));
+ pr_cont("\n");
+ }
+ }
+
+ x = 0;
+ rc = 0;
+ while (x < numbuffs && !rc) {
+ skb = lp->rx_skbuff[x];
+ packet = lp->tx_skbuff[x]->data;
+ for (i = 0; i < size; i++) {
+ if (*(skb->data + i) != packet[i]) {
+ netif_printk(lp, hw, KERN_DEBUG, dev,
+ "Error in compare! %2x - %02x %02x\n",
+ i, *(skb->data + i), packet[i]);
+ rc = 1;
+ break;
+ }
+ }
+ x++;
+ }
+
+clean_up:
+ *data1 = rc;
+ pcnet32_purge_tx_ring(dev);
+
+ x = a->read_csr(ioaddr, CSR15);
+ a->write_csr(ioaddr, CSR15, (x & ~0x0044)); /* reset bits 6 and 2 */
+
+ x = a->read_bcr(ioaddr, 32); /* reset internal loopback */
+ a->write_bcr(ioaddr, 32, (x & ~0x0002));
+
+ if (netif_running(dev)) {
+ pcnet32_netif_start(dev);
+ pcnet32_restart(dev, CSR0_NORMAL);
+ } else {
+ pcnet32_purge_rx_ring(dev);
+ lp->a.write_bcr(ioaddr, 20, 4); /* return to 16bit mode */
+ }
+ spin_unlock_irqrestore(&lp->lock, flags);
+
+ return rc;
+} /* end pcnet32_loopback_test */
+
+static int pcnet32_set_phys_id(struct net_device *dev,
+ enum ethtool_phys_id_state state)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ struct pcnet32_access *a = &lp->a;
+ ulong ioaddr = dev->base_addr;
+ unsigned long flags;
+ int i;
+
+ switch (state) {
+ case ETHTOOL_ID_ACTIVE:
+ /* Save the current value of the bcrs */
+ spin_lock_irqsave(&lp->lock, flags);
+ for (i = 4; i < 8; i++)
+ lp->save_regs[i - 4] = a->read_bcr(ioaddr, i);
+ spin_unlock_irqrestore(&lp->lock, flags);
+ return 2; /* cycle on/off twice per second */
+
+ case ETHTOOL_ID_ON:
+ case ETHTOOL_ID_OFF:
+ /* Blink the led */
+ spin_lock_irqsave(&lp->lock, flags);
+ for (i = 4; i < 8; i++)
+ a->write_bcr(ioaddr, i, a->read_bcr(ioaddr, i) ^ 0x4000);
+ spin_unlock_irqrestore(&lp->lock, flags);
+ break;
+
+ case ETHTOOL_ID_INACTIVE:
+ /* Restore the original value of the bcrs */
+ spin_lock_irqsave(&lp->lock, flags);
+ for (i = 4; i < 8; i++)
+ a->write_bcr(ioaddr, i, lp->save_regs[i - 4]);
+ spin_unlock_irqrestore(&lp->lock, flags);
+ }
+ return 0;
+}
+
+/*
+ * lp->lock must be held.
+ */
+static int pcnet32_suspend(struct net_device *dev, unsigned long *flags,
+ int can_sleep)
+{
+ int csr5;
+ struct pcnet32_private *lp = netdev_priv(dev);
+ struct pcnet32_access *a = &lp->a;
+ ulong ioaddr = dev->base_addr;
+ int ticks;
+
+ /* really old chips have to be stopped. */
+ if (lp->chip_version < PCNET32_79C970A)
+ return 0;
+
+ /* set SUSPEND (SPND) - CSR5 bit 0 */
+ csr5 = a->read_csr(ioaddr, CSR5);
+ a->write_csr(ioaddr, CSR5, csr5 | CSR5_SUSPEND);
+
+ /* poll waiting for bit to be set */
+ ticks = 0;
+ while (!(a->read_csr(ioaddr, CSR5) & CSR5_SUSPEND)) {
+ spin_unlock_irqrestore(&lp->lock, *flags);
+ if (can_sleep)
+ msleep(1);
+ else
+ mdelay(1);
+ spin_lock_irqsave(&lp->lock, *flags);
+ ticks++;
+ if (ticks > 200) {
+ netif_printk(lp, hw, KERN_DEBUG, dev,
+ "Error getting into suspend!\n");
+ return 0;
+ }
+ }
+ return 1;
+}
+
+/*
+ * process one receive descriptor entry
+ */
+
+static void pcnet32_rx_entry(struct net_device *dev,
+ struct pcnet32_private *lp,
+ struct pcnet32_rx_head *rxp,
+ int entry)
+{
+ int status = (short)le16_to_cpu(rxp->status) >> 8;
+ int rx_in_place = 0;
+ struct sk_buff *skb;
+ short pkt_len;
+
+ if (status != 0x03) { /* There was an error. */
+ /*
+ * There is a tricky error noted by John Murphy,
+ * <murf@perftech.com> to Russ Nelson: Even with full-sized
+ * buffers it's possible for a jabber packet to use two
+ * buffers, with only the last correctly noting the error.
+ */
+ if (status & 0x01) /* Only count a general error at the */
+ dev->stats.rx_errors++; /* end of a packet. */
+ if (status & 0x20)
+ dev->stats.rx_frame_errors++;
+ if (status & 0x10)
+ dev->stats.rx_over_errors++;
+ if (status & 0x08)
+ dev->stats.rx_crc_errors++;
+ if (status & 0x04)
+ dev->stats.rx_fifo_errors++;
+ return;
+ }
+
+ pkt_len = (le32_to_cpu(rxp->msg_length) & 0xfff) - 4;
+
+ /* Discard oversize frames. */
+ if (unlikely(pkt_len > PKT_BUF_SIZE)) {
+ netif_err(lp, drv, dev, "Impossible packet size %d!\n",
+ pkt_len);
+ dev->stats.rx_errors++;
+ return;
+ }
+ if (pkt_len < 60) {
+ netif_err(lp, rx_err, dev, "Runt packet!\n");
+ dev->stats.rx_errors++;
+ return;
+ }
+
+ if (pkt_len > rx_copybreak) {
+ struct sk_buff *newskb;
+
+ newskb = dev_alloc_skb(PKT_BUF_SKB);
+ if (newskb) {
+ skb_reserve(newskb, NET_IP_ALIGN);
+ skb = lp->rx_skbuff[entry];
+ pci_unmap_single(lp->pci_dev,
+ lp->rx_dma_addr[entry],
+ PKT_BUF_SIZE,
+ PCI_DMA_FROMDEVICE);
+ skb_put(skb, pkt_len);
+ lp->rx_skbuff[entry] = newskb;
+ lp->rx_dma_addr[entry] =
+ pci_map_single(lp->pci_dev,
+ newskb->data,
+ PKT_BUF_SIZE,
+ PCI_DMA_FROMDEVICE);
+ rxp->base = cpu_to_le32(lp->rx_dma_addr[entry]);
+ rx_in_place = 1;
+ } else
+ skb = NULL;
+ } else
+ skb = dev_alloc_skb(pkt_len + NET_IP_ALIGN);
+
+ if (skb == NULL) {
+ netif_err(lp, drv, dev, "Memory squeeze, dropping packet\n");
+ dev->stats.rx_dropped++;
+ return;
+ }
+ if (!rx_in_place) {
+ skb_reserve(skb, NET_IP_ALIGN);
+ skb_put(skb, pkt_len); /* Make room */
+ pci_dma_sync_single_for_cpu(lp->pci_dev,
+ lp->rx_dma_addr[entry],
+ pkt_len,
+ PCI_DMA_FROMDEVICE);
+ skb_copy_to_linear_data(skb,
+ (unsigned char *)(lp->rx_skbuff[entry]->data),
+ pkt_len);
+ pci_dma_sync_single_for_device(lp->pci_dev,
+ lp->rx_dma_addr[entry],
+ pkt_len,
+ PCI_DMA_FROMDEVICE);
+ }
+ dev->stats.rx_bytes += skb->len;
+ skb->protocol = eth_type_trans(skb, dev);
+ netif_receive_skb(skb);
+ dev->stats.rx_packets++;
+}
+
+static int pcnet32_rx(struct net_device *dev, int budget)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ int entry = lp->cur_rx & lp->rx_mod_mask;
+ struct pcnet32_rx_head *rxp = &lp->rx_ring[entry];
+ int npackets = 0;
+
+ /* If we own the next entry, it's a new packet. Send it up. */
+ while (npackets < budget && (short)le16_to_cpu(rxp->status) >= 0) {
+ pcnet32_rx_entry(dev, lp, rxp, entry);
+ npackets += 1;
+ /*
+ * The docs say that the buffer length isn't touched, but Andrew
+ * Boyd of QNX reports that some revs of the 79C965 clear it.
+ */
+ rxp->buf_length = cpu_to_le16(NEG_BUF_SIZE);
+ wmb(); /* Make sure owner changes after others are visible */
+ rxp->status = cpu_to_le16(0x8000);
+ entry = (++lp->cur_rx) & lp->rx_mod_mask;
+ rxp = &lp->rx_ring[entry];
+ }
+
+ return npackets;
+}
+
+static int pcnet32_tx(struct net_device *dev)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ unsigned int dirty_tx = lp->dirty_tx;
+ int delta;
+ int must_restart = 0;
+
+ while (dirty_tx != lp->cur_tx) {
+ int entry = dirty_tx & lp->tx_mod_mask;
+ int status = (short)le16_to_cpu(lp->tx_ring[entry].status);
+
+ if (status < 0)
+ break; /* It still hasn't been Txed */
+
+ lp->tx_ring[entry].base = 0;
+
+ if (status & 0x4000) {
+ /* There was a major error, log it. */
+ int err_status = le32_to_cpu(lp->tx_ring[entry].misc);
+ dev->stats.tx_errors++;
+ netif_err(lp, tx_err, dev,
+ "Tx error status=%04x err_status=%08x\n",
+ status, err_status);
+ if (err_status & 0x04000000)
+ dev->stats.tx_aborted_errors++;
+ if (err_status & 0x08000000)
+ dev->stats.tx_carrier_errors++;
+ if (err_status & 0x10000000)
+ dev->stats.tx_window_errors++;
+#ifndef DO_DXSUFLO
+ if (err_status & 0x40000000) {
+ dev->stats.tx_fifo_errors++;
+ /* Ackk! On FIFO errors the Tx unit is turned off! */
+ /* Remove this verbosity later! */
+ netif_err(lp, tx_err, dev, "Tx FIFO error!\n");
+ must_restart = 1;
+ }
+#else
+ if (err_status & 0x40000000) {
+ dev->stats.tx_fifo_errors++;
+ if (!lp->dxsuflo) { /* If controller doesn't recover ... */
+ /* Ackk! On FIFO errors the Tx unit is turned off! */
+ /* Remove this verbosity later! */
+ netif_err(lp, tx_err, dev, "Tx FIFO error!\n");
+ must_restart = 1;
+ }
+ }
+#endif
+ } else {
+ if (status & 0x1800)
+ dev->stats.collisions++;
+ dev->stats.tx_packets++;
+ }
+
+ /* We must free the original skb */
+ if (lp->tx_skbuff[entry]) {
+ pci_unmap_single(lp->pci_dev,
+ lp->tx_dma_addr[entry],
+ lp->tx_skbuff[entry]->
+ len, PCI_DMA_TODEVICE);
+ dev_kfree_skb_any(lp->tx_skbuff[entry]);
+ lp->tx_skbuff[entry] = NULL;
+ lp->tx_dma_addr[entry] = 0;
+ }
+ dirty_tx++;
+ }
+
+ delta = (lp->cur_tx - dirty_tx) & (lp->tx_mod_mask + lp->tx_ring_size);
+ if (delta > lp->tx_ring_size) {
+ netif_err(lp, drv, dev, "out-of-sync dirty pointer, %d vs. %d, full=%d\n",
+ dirty_tx, lp->cur_tx, lp->tx_full);
+ dirty_tx += lp->tx_ring_size;
+ delta -= lp->tx_ring_size;
+ }
+
+ if (lp->tx_full &&
+ netif_queue_stopped(dev) &&
+ delta < lp->tx_ring_size - 2) {
+ /* The ring is no longer full, clear tbusy. */
+ lp->tx_full = 0;
+ netif_wake_queue(dev);
+ }
+ lp->dirty_tx = dirty_tx;
+
+ return must_restart;
+}
+
+static int pcnet32_poll(struct napi_struct *napi, int budget)
+{
+ struct pcnet32_private *lp = container_of(napi, struct pcnet32_private, napi);
+ struct net_device *dev = lp->dev;
+ unsigned long ioaddr = dev->base_addr;
+ unsigned long flags;
+ int work_done;
+ u16 val;
+
+ work_done = pcnet32_rx(dev, budget);
+
+ spin_lock_irqsave(&lp->lock, flags);
+ if (pcnet32_tx(dev)) {
+ /* reset the chip to clear the error condition, then restart */
+ lp->a.reset(ioaddr);
+ lp->a.write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */
+ pcnet32_restart(dev, CSR0_START);
+ netif_wake_queue(dev);
+ }
+ spin_unlock_irqrestore(&lp->lock, flags);
+
+ if (work_done < budget) {
+ spin_lock_irqsave(&lp->lock, flags);
+
+ __napi_complete(napi);
+
+ /* clear interrupt masks */
+ val = lp->a.read_csr(ioaddr, CSR3);
+ val &= 0x00ff;
+ lp->a.write_csr(ioaddr, CSR3, val);
+
+ /* Set interrupt enable. */
+ lp->a.write_csr(ioaddr, CSR0, CSR0_INTEN);
+
+ spin_unlock_irqrestore(&lp->lock, flags);
+ }
+ return work_done;
+}
+
+#define PCNET32_REGS_PER_PHY 32
+#define PCNET32_MAX_PHYS 32
+static int pcnet32_get_regs_len(struct net_device *dev)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ int j = lp->phycount * PCNET32_REGS_PER_PHY;
+
+ return (PCNET32_NUM_REGS + j) * sizeof(u16);
+}
+
+static void pcnet32_get_regs(struct net_device *dev, struct ethtool_regs *regs,
+ void *ptr)
+{
+ int i, csr0;
+ u16 *buff = ptr;
+ struct pcnet32_private *lp = netdev_priv(dev);
+ struct pcnet32_access *a = &lp->a;
+ ulong ioaddr = dev->base_addr;
+ unsigned long flags;
+
+ spin_lock_irqsave(&lp->lock, flags);
+
+ csr0 = a->read_csr(ioaddr, CSR0);
+ if (!(csr0 & CSR0_STOP)) /* If not stopped */
+ pcnet32_suspend(dev, &flags, 1);
+
+ /* read address PROM */
+ for (i = 0; i < 16; i += 2)
+ *buff++ = inw(ioaddr + i);
+
+ /* read control and status registers */
+ for (i = 0; i < 90; i++)
+ *buff++ = a->read_csr(ioaddr, i);
+
+ *buff++ = a->read_csr(ioaddr, 112);
+ *buff++ = a->read_csr(ioaddr, 114);
+
+ /* read bus configuration registers */
+ for (i = 0; i < 30; i++)
+ *buff++ = a->read_bcr(ioaddr, i);
+
+ *buff++ = 0; /* skip bcr30 so as not to hang 79C976 */
+
+ for (i = 31; i < 36; i++)
+ *buff++ = a->read_bcr(ioaddr, i);
+
+ /* read mii phy registers */
+ if (lp->mii) {
+ int j;
+ for (j = 0; j < PCNET32_MAX_PHYS; j++) {
+ if (lp->phymask & (1 << j)) {
+ for (i = 0; i < PCNET32_REGS_PER_PHY; i++) {
+ lp->a.write_bcr(ioaddr, 33,
+ (j << 5) | i);
+ *buff++ = lp->a.read_bcr(ioaddr, 34);
+ }
+ }
+ }
+ }
+
+ if (!(csr0 & CSR0_STOP)) { /* If not stopped */
+ int csr5;
+
+ /* clear SUSPEND (SPND) - CSR5 bit 0 */
+ csr5 = a->read_csr(ioaddr, CSR5);
+ a->write_csr(ioaddr, CSR5, csr5 & (~CSR5_SUSPEND));
+ }
+
+ spin_unlock_irqrestore(&lp->lock, flags);
+}
+
+static const struct ethtool_ops pcnet32_ethtool_ops = {
+ .get_settings = pcnet32_get_settings,
+ .set_settings = pcnet32_set_settings,
+ .get_drvinfo = pcnet32_get_drvinfo,
+ .get_msglevel = pcnet32_get_msglevel,
+ .set_msglevel = pcnet32_set_msglevel,
+ .nway_reset = pcnet32_nway_reset,
+ .get_link = pcnet32_get_link,
+ .get_ringparam = pcnet32_get_ringparam,
+ .set_ringparam = pcnet32_set_ringparam,
+ .get_strings = pcnet32_get_strings,
+ .self_test = pcnet32_ethtool_test,
+ .set_phys_id = pcnet32_set_phys_id,
+ .get_regs_len = pcnet32_get_regs_len,
+ .get_regs = pcnet32_get_regs,
+ .get_sset_count = pcnet32_get_sset_count,
+};
+
+/* only probes for non-PCI devices, the rest are handled by
+ * pci_register_driver via pcnet32_probe_pci */
+
+static void __devinit pcnet32_probe_vlbus(unsigned int *pcnet32_portlist)
+{
+ unsigned int *port, ioaddr;
+
+ /* search for PCnet32 VLB cards at known addresses */
+ for (port = pcnet32_portlist; (ioaddr = *port); port++) {
+ if (request_region
+ (ioaddr, PCNET32_TOTAL_SIZE, "pcnet32_probe_vlbus")) {
+ /* check if there is really a pcnet chip on that ioaddr */
+ if ((inb(ioaddr + 14) == 0x57) &&
+ (inb(ioaddr + 15) == 0x57)) {
+ pcnet32_probe1(ioaddr, 0, NULL);
+ } else {
+ release_region(ioaddr, PCNET32_TOTAL_SIZE);
+ }
+ }
+ }
+}
+
+static int __devinit
+pcnet32_probe_pci(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ unsigned long ioaddr;
+ int err;
+
+ err = pci_enable_device(pdev);
+ if (err < 0) {
+ if (pcnet32_debug & NETIF_MSG_PROBE)
+ pr_err("failed to enable device -- err=%d\n", err);
+ return err;
+ }
+ pci_set_master(pdev);
+
+ ioaddr = pci_resource_start(pdev, 0);
+ if (!ioaddr) {
+ if (pcnet32_debug & NETIF_MSG_PROBE)
+ pr_err("card has no PCI IO resources, aborting\n");
+ return -ENODEV;
+ }
+
+ if (!pci_dma_supported(pdev, PCNET32_DMA_MASK)) {
+ if (pcnet32_debug & NETIF_MSG_PROBE)
+ pr_err("architecture does not support 32bit PCI busmaster DMA\n");
+ return -ENODEV;
+ }
+ if (!request_region(ioaddr, PCNET32_TOTAL_SIZE, "pcnet32_probe_pci")) {
+ if (pcnet32_debug & NETIF_MSG_PROBE)
+ pr_err("io address range already allocated\n");
+ return -EBUSY;
+ }
+
+ err = pcnet32_probe1(ioaddr, 1, pdev);
+ if (err < 0)
+ pci_disable_device(pdev);
+
+ return err;
+}
+
+static const struct net_device_ops pcnet32_netdev_ops = {
+ .ndo_open = pcnet32_open,
+ .ndo_stop = pcnet32_close,
+ .ndo_start_xmit = pcnet32_start_xmit,
+ .ndo_tx_timeout = pcnet32_tx_timeout,
+ .ndo_get_stats = pcnet32_get_stats,
+ .ndo_set_rx_mode = pcnet32_set_multicast_list,
+ .ndo_do_ioctl = pcnet32_ioctl,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_set_mac_address = eth_mac_addr,
+ .ndo_validate_addr = eth_validate_addr,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = pcnet32_poll_controller,
+#endif
+};
+
+/* pcnet32_probe1
+ * Called from both pcnet32_probe_vlbus and pcnet_probe_pci.
+ * pdev will be NULL when called from pcnet32_probe_vlbus.
+ */
+static int __devinit
+pcnet32_probe1(unsigned long ioaddr, int shared, struct pci_dev *pdev)
+{
+ struct pcnet32_private *lp;
+ int i, media;
+ int fdx, mii, fset, dxsuflo;
+ int chip_version;
+ char *chipname;
+ struct net_device *dev;
+ struct pcnet32_access *a = NULL;
+ u8 promaddr[6];
+ int ret = -ENODEV;
+
+ /* reset the chip */
+ pcnet32_wio_reset(ioaddr);
+
+ /* NOTE: 16-bit check is first, otherwise some older PCnet chips fail */
+ if (pcnet32_wio_read_csr(ioaddr, 0) == 4 && pcnet32_wio_check(ioaddr)) {
+ a = &pcnet32_wio;
+ } else {
+ pcnet32_dwio_reset(ioaddr);
+ if (pcnet32_dwio_read_csr(ioaddr, 0) == 4 &&
+ pcnet32_dwio_check(ioaddr)) {
+ a = &pcnet32_dwio;
+ } else {
+ if (pcnet32_debug & NETIF_MSG_PROBE)
+ pr_err("No access methods\n");
+ goto err_release_region;
+ }
+ }
+
+ chip_version =
+ a->read_csr(ioaddr, 88) | (a->read_csr(ioaddr, 89) << 16);
+ if ((pcnet32_debug & NETIF_MSG_PROBE) && (pcnet32_debug & NETIF_MSG_HW))
+ pr_info(" PCnet chip version is %#x\n", chip_version);
+ if ((chip_version & 0xfff) != 0x003) {
+ if (pcnet32_debug & NETIF_MSG_PROBE)
+ pr_info("Unsupported chip version\n");
+ goto err_release_region;
+ }
+
+ /* initialize variables */
+ fdx = mii = fset = dxsuflo = 0;
+ chip_version = (chip_version >> 12) & 0xffff;
+
+ switch (chip_version) {
+ case 0x2420:
+ chipname = "PCnet/PCI 79C970"; /* PCI */
+ break;
+ case 0x2430:
+ if (shared)
+ chipname = "PCnet/PCI 79C970"; /* 970 gives the wrong chip id back */
+ else
+ chipname = "PCnet/32 79C965"; /* 486/VL bus */
+ break;
+ case 0x2621:
+ chipname = "PCnet/PCI II 79C970A"; /* PCI */
+ fdx = 1;
+ break;
+ case 0x2623:
+ chipname = "PCnet/FAST 79C971"; /* PCI */
+ fdx = 1;
+ mii = 1;
+ fset = 1;
+ break;
+ case 0x2624:
+ chipname = "PCnet/FAST+ 79C972"; /* PCI */
+ fdx = 1;
+ mii = 1;
+ fset = 1;
+ break;
+ case 0x2625:
+ chipname = "PCnet/FAST III 79C973"; /* PCI */
+ fdx = 1;
+ mii = 1;
+ break;
+ case 0x2626:
+ chipname = "PCnet/Home 79C978"; /* PCI */
+ fdx = 1;
+ /*
+ * This is based on specs published at www.amd.com. This section
+ * assumes that a card with a 79C978 wants to go into standard
+ * ethernet mode. The 79C978 can also go into 1Mb HomePNA mode,
+ * and the module option homepna=1 can select this instead.
+ */
+ media = a->read_bcr(ioaddr, 49);
+ media &= ~3; /* default to 10Mb ethernet */
+ if (cards_found < MAX_UNITS && homepna[cards_found])
+ media |= 1; /* switch to home wiring mode */
+ if (pcnet32_debug & NETIF_MSG_PROBE)
+ printk(KERN_DEBUG PFX "media set to %sMbit mode\n",
+ (media & 1) ? "1" : "10");
+ a->write_bcr(ioaddr, 49, media);
+ break;
+ case 0x2627:
+ chipname = "PCnet/FAST III 79C975"; /* PCI */
+ fdx = 1;
+ mii = 1;
+ break;
+ case 0x2628:
+ chipname = "PCnet/PRO 79C976";
+ fdx = 1;
+ mii = 1;
+ break;
+ default:
+ if (pcnet32_debug & NETIF_MSG_PROBE)
+ pr_info("PCnet version %#x, no PCnet32 chip\n",
+ chip_version);
+ goto err_release_region;
+ }
+
+ /*
+ * On selected chips turn on the BCR18:NOUFLO bit. This stops transmit
+ * starting until the packet is loaded. Strike one for reliability, lose
+ * one for latency - although on PCI this isn't a big loss. Older chips
+ * have FIFO's smaller than a packet, so you can't do this.
+ * Turn on BCR18:BurstRdEn and BCR18:BurstWrEn.
+ */
+
+ if (fset) {
+ a->write_bcr(ioaddr, 18, (a->read_bcr(ioaddr, 18) | 0x0860));
+ a->write_csr(ioaddr, 80,
+ (a->read_csr(ioaddr, 80) & 0x0C00) | 0x0c00);
+ dxsuflo = 1;
+ }
+
+ dev = alloc_etherdev(sizeof(*lp));
+ if (!dev) {
+ if (pcnet32_debug & NETIF_MSG_PROBE)
+ pr_err("Memory allocation failed\n");
+ ret = -ENOMEM;
+ goto err_release_region;
+ }
+
+ if (pdev)
+ SET_NETDEV_DEV(dev, &pdev->dev);
+
+ if (pcnet32_debug & NETIF_MSG_PROBE)
+ pr_info("%s at %#3lx,", chipname, ioaddr);
+
+ /* In most chips, after a chip reset, the ethernet address is read from the
+ * station address PROM at the base address and programmed into the
+ * "Physical Address Registers" CSR12-14.
+ * As a precautionary measure, we read the PROM values and complain if
+ * they disagree with the CSRs. If they miscompare, and the PROM addr
+ * is valid, then the PROM addr is used.
+ */
+ for (i = 0; i < 3; i++) {
+ unsigned int val;
+ val = a->read_csr(ioaddr, i + 12) & 0x0ffff;
+ /* There may be endianness issues here. */
+ dev->dev_addr[2 * i] = val & 0x0ff;
+ dev->dev_addr[2 * i + 1] = (val >> 8) & 0x0ff;
+ }
+
+ /* read PROM address and compare with CSR address */
+ for (i = 0; i < 6; i++)
+ promaddr[i] = inb(ioaddr + i);
+
+ if (memcmp(promaddr, dev->dev_addr, 6) ||
+ !is_valid_ether_addr(dev->dev_addr)) {
+ if (is_valid_ether_addr(promaddr)) {
+ if (pcnet32_debug & NETIF_MSG_PROBE) {
+ pr_cont(" warning: CSR address invalid,\n");
+ pr_info(" using instead PROM address of");
+ }
+ memcpy(dev->dev_addr, promaddr, 6);
+ }
+ }
+ memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
+
+ /* if the ethernet address is not valid, force to 00:00:00:00:00:00 */
+ if (!is_valid_ether_addr(dev->perm_addr))
+ memset(dev->dev_addr, 0, ETH_ALEN);
+
+ if (pcnet32_debug & NETIF_MSG_PROBE) {
+ pr_cont(" %pM", dev->dev_addr);
+
+ /* Version 0x2623 and 0x2624 */
+ if (((chip_version + 1) & 0xfffe) == 0x2624) {
+ i = a->read_csr(ioaddr, 80) & 0x0C00; /* Check tx_start_pt */
+ pr_info(" tx_start_pt(0x%04x):", i);
+ switch (i >> 10) {
+ case 0:
+ pr_cont(" 20 bytes,");
+ break;
+ case 1:
+ pr_cont(" 64 bytes,");
+ break;
+ case 2:
+ pr_cont(" 128 bytes,");
+ break;
+ case 3:
+ pr_cont("~220 bytes,");
+ break;
+ }
+ i = a->read_bcr(ioaddr, 18); /* Check Burst/Bus control */
+ pr_cont(" BCR18(%x):", i & 0xffff);
+ if (i & (1 << 5))
+ pr_cont("BurstWrEn ");
+ if (i & (1 << 6))
+ pr_cont("BurstRdEn ");
+ if (i & (1 << 7))
+ pr_cont("DWordIO ");
+ if (i & (1 << 11))
+ pr_cont("NoUFlow ");
+ i = a->read_bcr(ioaddr, 25);
+ pr_info(" SRAMSIZE=0x%04x,", i << 8);
+ i = a->read_bcr(ioaddr, 26);
+ pr_cont(" SRAM_BND=0x%04x,", i << 8);
+ i = a->read_bcr(ioaddr, 27);
+ if (i & (1 << 14))
+ pr_cont("LowLatRx");
+ }
+ }
+
+ dev->base_addr = ioaddr;
+ lp = netdev_priv(dev);
+ /* pci_alloc_consistent returns page-aligned memory, so we do not have to check the alignment */
+ lp->init_block = pci_alloc_consistent(pdev, sizeof(*lp->init_block),
+ &lp->init_dma_addr);
+ if (!lp->init_block) {
+ if (pcnet32_debug & NETIF_MSG_PROBE)
+ pr_err("Consistent memory allocation failed\n");
+ ret = -ENOMEM;
+ goto err_free_netdev;
+ }
+ lp->pci_dev = pdev;
+
+ lp->dev = dev;
+
+ spin_lock_init(&lp->lock);
+
+ lp->name = chipname;
+ lp->shared_irq = shared;
+ lp->tx_ring_size = TX_RING_SIZE; /* default tx ring size */
+ lp->rx_ring_size = RX_RING_SIZE; /* default rx ring size */
+ lp->tx_mod_mask = lp->tx_ring_size - 1;
+ lp->rx_mod_mask = lp->rx_ring_size - 1;
+ lp->tx_len_bits = (PCNET32_LOG_TX_BUFFERS << 12);
+ lp->rx_len_bits = (PCNET32_LOG_RX_BUFFERS << 4);
+ lp->mii_if.full_duplex = fdx;
+ lp->mii_if.phy_id_mask = 0x1f;
+ lp->mii_if.reg_num_mask = 0x1f;
+ lp->dxsuflo = dxsuflo;
+ lp->mii = mii;
+ lp->chip_version = chip_version;
+ lp->msg_enable = pcnet32_debug;
+ if ((cards_found >= MAX_UNITS) ||
+ (options[cards_found] >= sizeof(options_mapping)))
+ lp->options = PCNET32_PORT_ASEL;
+ else
+ lp->options = options_mapping[options[cards_found]];
+ lp->mii_if.dev = dev;
+ lp->mii_if.mdio_read = mdio_read;
+ lp->mii_if.mdio_write = mdio_write;
+
+ /* napi.weight is used in both the napi and non-napi cases */
+ lp->napi.weight = lp->rx_ring_size / 2;
+
+ netif_napi_add(dev, &lp->napi, pcnet32_poll, lp->rx_ring_size / 2);
+
+ if (fdx && !(lp->options & PCNET32_PORT_ASEL) &&
+ ((cards_found >= MAX_UNITS) || full_duplex[cards_found]))
+ lp->options |= PCNET32_PORT_FD;
+
+ lp->a = *a;
+
+ /* prior to register_netdev, dev->name is not yet correct */
+ if (pcnet32_alloc_ring(dev, pci_name(lp->pci_dev))) {
+ ret = -ENOMEM;
+ goto err_free_ring;
+ }
+ /* detect special T1/E1 WAN card by checking for MAC address */
+ if (dev->dev_addr[0] == 0x00 && dev->dev_addr[1] == 0xe0 &&
+ dev->dev_addr[2] == 0x75)
+ lp->options = PCNET32_PORT_FD | PCNET32_PORT_GPSI;
+
+ lp->init_block->mode = cpu_to_le16(0x0003); /* Disable Rx and Tx. */
+ lp->init_block->tlen_rlen =
+ cpu_to_le16(lp->tx_len_bits | lp->rx_len_bits);
+ for (i = 0; i < 6; i++)
+ lp->init_block->phys_addr[i] = dev->dev_addr[i];
+ lp->init_block->filter[0] = 0x00000000;
+ lp->init_block->filter[1] = 0x00000000;
+ lp->init_block->rx_ring = cpu_to_le32(lp->rx_ring_dma_addr);
+ lp->init_block->tx_ring = cpu_to_le32(lp->tx_ring_dma_addr);
+
+ /* switch pcnet32 to 32bit mode */
+ a->write_bcr(ioaddr, 20, 2);
+
+ a->write_csr(ioaddr, 1, (lp->init_dma_addr & 0xffff));
+ a->write_csr(ioaddr, 2, (lp->init_dma_addr >> 16));
+
+ if (pdev) { /* use the IRQ provided by PCI */
+ dev->irq = pdev->irq;
+ if (pcnet32_debug & NETIF_MSG_PROBE)
+ pr_cont(" assigned IRQ %d\n", dev->irq);
+ } else {
+ unsigned long irq_mask = probe_irq_on();
+
+ /*
+ * To auto-IRQ we enable the initialization-done and DMA error
+ * interrupts. For ISA boards we get a DMA error, but VLB and PCI
+ * boards will work.
+ */
+ /* Trigger an initialization just for the interrupt. */
+ a->write_csr(ioaddr, CSR0, CSR0_INTEN | CSR0_INIT);
+ mdelay(1);
+
+ dev->irq = probe_irq_off(irq_mask);
+ if (!dev->irq) {
+ if (pcnet32_debug & NETIF_MSG_PROBE)
+ pr_cont(", failed to detect IRQ line\n");
+ ret = -ENODEV;
+ goto err_free_ring;
+ }
+ if (pcnet32_debug & NETIF_MSG_PROBE)
+ pr_cont(", probed IRQ %d\n", dev->irq);
+ }
+
+ /* Set the mii phy_id so that we can query the link state */
+ if (lp->mii) {
+ /* lp->phycount and lp->phymask are set to 0 by memset above */
+
+ lp->mii_if.phy_id = ((lp->a.read_bcr(ioaddr, 33)) >> 5) & 0x1f;
+ /* scan for PHYs */
+ for (i = 0; i < PCNET32_MAX_PHYS; i++) {
+ unsigned short id1, id2;
+
+ id1 = mdio_read(dev, i, MII_PHYSID1);
+ if (id1 == 0xffff)
+ continue;
+ id2 = mdio_read(dev, i, MII_PHYSID2);
+ if (id2 == 0xffff)
+ continue;
+ if (i == 31 && ((chip_version + 1) & 0xfffe) == 0x2624)
+ continue; /* 79C971 & 79C972 have phantom phy at id 31 */
+ lp->phycount++;
+ lp->phymask |= (1 << i);
+ lp->mii_if.phy_id = i;
+ if (pcnet32_debug & NETIF_MSG_PROBE)
+ pr_info("Found PHY %04x:%04x at address %d\n",
+ id1, id2, i);
+ }
+ lp->a.write_bcr(ioaddr, 33, (lp->mii_if.phy_id) << 5);
+ if (lp->phycount > 1)
+ lp->options |= PCNET32_PORT_MII;
+ }
+
+ init_timer(&lp->watchdog_timer);
+ lp->watchdog_timer.data = (unsigned long)dev;
+ lp->watchdog_timer.function = (void *)&pcnet32_watchdog;
+
+ /* The PCNET32-specific entries in the device structure. */
+ dev->netdev_ops = &pcnet32_netdev_ops;
+ dev->ethtool_ops = &pcnet32_ethtool_ops;
+ dev->watchdog_timeo = (5 * HZ);
+
+ /* Fill in the generic fields of the device structure. */
+ if (register_netdev(dev))
+ goto err_free_ring;
+
+ if (pdev) {
+ pci_set_drvdata(pdev, dev);
+ } else {
+ lp->next = pcnet32_dev;
+ pcnet32_dev = dev;
+ }
+
+ if (pcnet32_debug & NETIF_MSG_PROBE)
+ pr_info("%s: registered as %s\n", dev->name, lp->name);
+ cards_found++;
+
+ /* enable LED writes */
+ a->write_bcr(ioaddr, 2, a->read_bcr(ioaddr, 2) | 0x1000);
+
+ return 0;
+
+err_free_ring:
+ pcnet32_free_ring(dev);
+ pci_free_consistent(lp->pci_dev, sizeof(*lp->init_block),
+ lp->init_block, lp->init_dma_addr);
+err_free_netdev:
+ free_netdev(dev);
+err_release_region:
+ release_region(ioaddr, PCNET32_TOTAL_SIZE);
+ return ret;
+}
+
+/* if any allocation fails, caller must also call pcnet32_free_ring */
+static int pcnet32_alloc_ring(struct net_device *dev, const char *name)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+
+ lp->tx_ring = pci_alloc_consistent(lp->pci_dev,
+ sizeof(struct pcnet32_tx_head) *
+ lp->tx_ring_size,
+ &lp->tx_ring_dma_addr);
+ if (lp->tx_ring == NULL) {
+ netif_err(lp, drv, dev, "Consistent memory allocation failed\n");
+ return -ENOMEM;
+ }
+
+ lp->rx_ring = pci_alloc_consistent(lp->pci_dev,
+ sizeof(struct pcnet32_rx_head) *
+ lp->rx_ring_size,
+ &lp->rx_ring_dma_addr);
+ if (lp->rx_ring == NULL) {
+ netif_err(lp, drv, dev, "Consistent memory allocation failed\n");
+ return -ENOMEM;
+ }
+
+ lp->tx_dma_addr = kcalloc(lp->tx_ring_size, sizeof(dma_addr_t),
+ GFP_ATOMIC);
+ if (!lp->tx_dma_addr) {
+ netif_err(lp, drv, dev, "Memory allocation failed\n");
+ return -ENOMEM;
+ }
+
+ lp->rx_dma_addr = kcalloc(lp->rx_ring_size, sizeof(dma_addr_t),
+ GFP_ATOMIC);
+ if (!lp->rx_dma_addr) {
+ netif_err(lp, drv, dev, "Memory allocation failed\n");
+ return -ENOMEM;
+ }
+
+ lp->tx_skbuff = kcalloc(lp->tx_ring_size, sizeof(struct sk_buff *),
+ GFP_ATOMIC);
+ if (!lp->tx_skbuff) {
+ netif_err(lp, drv, dev, "Memory allocation failed\n");
+ return -ENOMEM;
+ }
+
+ lp->rx_skbuff = kcalloc(lp->rx_ring_size, sizeof(struct sk_buff *),
+ GFP_ATOMIC);
+ if (!lp->rx_skbuff) {
+ netif_err(lp, drv, dev, "Memory allocation failed\n");
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+static void pcnet32_free_ring(struct net_device *dev)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+
+ kfree(lp->tx_skbuff);
+ lp->tx_skbuff = NULL;
+
+ kfree(lp->rx_skbuff);
+ lp->rx_skbuff = NULL;
+
+ kfree(lp->tx_dma_addr);
+ lp->tx_dma_addr = NULL;
+
+ kfree(lp->rx_dma_addr);
+ lp->rx_dma_addr = NULL;
+
+ if (lp->tx_ring) {
+ pci_free_consistent(lp->pci_dev,
+ sizeof(struct pcnet32_tx_head) *
+ lp->tx_ring_size, lp->tx_ring,
+ lp->tx_ring_dma_addr);
+ lp->tx_ring = NULL;
+ }
+
+ if (lp->rx_ring) {
+ pci_free_consistent(lp->pci_dev,
+ sizeof(struct pcnet32_rx_head) *
+ lp->rx_ring_size, lp->rx_ring,
+ lp->rx_ring_dma_addr);
+ lp->rx_ring = NULL;
+ }
+}
+
+static int pcnet32_open(struct net_device *dev)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ struct pci_dev *pdev = lp->pci_dev;
+ unsigned long ioaddr = dev->base_addr;
+ u16 val;
+ int i;
+ int rc;
+ unsigned long flags;
+
+ if (request_irq(dev->irq, pcnet32_interrupt,
+ lp->shared_irq ? IRQF_SHARED : 0, dev->name,
+ (void *)dev)) {
+ return -EAGAIN;
+ }
+
+ spin_lock_irqsave(&lp->lock, flags);
+ /* Check for a valid station address */
+ if (!is_valid_ether_addr(dev->dev_addr)) {
+ rc = -EINVAL;
+ goto err_free_irq;
+ }
+
+ /* Reset the PCNET32 */
+ lp->a.reset(ioaddr);
+
+ /* switch pcnet32 to 32bit mode */
+ lp->a.write_bcr(ioaddr, 20, 2);
+
+ netif_printk(lp, ifup, KERN_DEBUG, dev,
+ "%s() irq %d tx/rx rings %#x/%#x init %#x\n",
+ __func__, dev->irq, (u32) (lp->tx_ring_dma_addr),
+ (u32) (lp->rx_ring_dma_addr),
+ (u32) (lp->init_dma_addr));
+
+ /* set/reset autoselect bit */
+ val = lp->a.read_bcr(ioaddr, 2) & ~2;
+ if (lp->options & PCNET32_PORT_ASEL)
+ val |= 2;
+ lp->a.write_bcr(ioaddr, 2, val);
+
+ /* handle full duplex setting */
+ if (lp->mii_if.full_duplex) {
+ val = lp->a.read_bcr(ioaddr, 9) & ~3;
+ if (lp->options & PCNET32_PORT_FD) {
+ val |= 1;
+ if (lp->options == (PCNET32_PORT_FD | PCNET32_PORT_AUI))
+ val |= 2;
+ } else if (lp->options & PCNET32_PORT_ASEL) {
+ /* workaround of xSeries250, turn on for 79C975 only */
+ if (lp->chip_version == 0x2627)
+ val |= 3;
+ }
+ lp->a.write_bcr(ioaddr, 9, val);
+ }
+
+ /* set/reset GPSI bit in test register */
+ val = lp->a.read_csr(ioaddr, 124) & ~0x10;
+ if ((lp->options & PCNET32_PORT_PORTSEL) == PCNET32_PORT_GPSI)
+ val |= 0x10;
+ lp->a.write_csr(ioaddr, 124, val);
+
+ /* Allied Telesyn AT 2700/2701 FX are 100Mbit only and do not negotiate */
+ if (pdev && pdev->subsystem_vendor == PCI_VENDOR_ID_AT &&
+ (pdev->subsystem_device == PCI_SUBDEVICE_ID_AT_2700FX ||
+ pdev->subsystem_device == PCI_SUBDEVICE_ID_AT_2701FX)) {
+ if (lp->options & PCNET32_PORT_ASEL) {
+ lp->options = PCNET32_PORT_FD | PCNET32_PORT_100;
+ netif_printk(lp, link, KERN_DEBUG, dev,
+ "Setting 100Mb-Full Duplex\n");
+ }
+ }
+ if (lp->phycount < 2) {
+ /*
+ * 24 Jun 2004 according AMD, in order to change the PHY,
+ * DANAS (or DISPM for 79C976) must be set; then select the speed,
+ * duplex, and/or enable auto negotiation, and clear DANAS
+ */
+ if (lp->mii && !(lp->options & PCNET32_PORT_ASEL)) {
+ lp->a.write_bcr(ioaddr, 32,
+ lp->a.read_bcr(ioaddr, 32) | 0x0080);
+ /* disable Auto Negotiation, set 10Mpbs, HD */
+ val = lp->a.read_bcr(ioaddr, 32) & ~0xb8;
+ if (lp->options & PCNET32_PORT_FD)
+ val |= 0x10;
+ if (lp->options & PCNET32_PORT_100)
+ val |= 0x08;
+ lp->a.write_bcr(ioaddr, 32, val);
+ } else {
+ if (lp->options & PCNET32_PORT_ASEL) {
+ lp->a.write_bcr(ioaddr, 32,
+ lp->a.read_bcr(ioaddr,
+ 32) | 0x0080);
+ /* enable auto negotiate, setup, disable fd */
+ val = lp->a.read_bcr(ioaddr, 32) & ~0x98;
+ val |= 0x20;
+ lp->a.write_bcr(ioaddr, 32, val);
+ }
+ }
+ } else {
+ int first_phy = -1;
+ u16 bmcr;
+ u32 bcr9;
+ struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
+
+ /*
+ * There is really no good other way to handle multiple PHYs
+ * other than turning off all automatics
+ */
+ val = lp->a.read_bcr(ioaddr, 2);
+ lp->a.write_bcr(ioaddr, 2, val & ~2);
+ val = lp->a.read_bcr(ioaddr, 32);
+ lp->a.write_bcr(ioaddr, 32, val & ~(1 << 7)); /* stop MII manager */
+
+ if (!(lp->options & PCNET32_PORT_ASEL)) {
+ /* setup ecmd */
+ ecmd.port = PORT_MII;
+ ecmd.transceiver = XCVR_INTERNAL;
+ ecmd.autoneg = AUTONEG_DISABLE;
+ ethtool_cmd_speed_set(&ecmd,
+ (lp->options & PCNET32_PORT_100) ?
+ SPEED_100 : SPEED_10);
+ bcr9 = lp->a.read_bcr(ioaddr, 9);
+
+ if (lp->options & PCNET32_PORT_FD) {
+ ecmd.duplex = DUPLEX_FULL;
+ bcr9 |= (1 << 0);
+ } else {
+ ecmd.duplex = DUPLEX_HALF;
+ bcr9 |= ~(1 << 0);
+ }
+ lp->a.write_bcr(ioaddr, 9, bcr9);
+ }
+
+ for (i = 0; i < PCNET32_MAX_PHYS; i++) {
+ if (lp->phymask & (1 << i)) {
+ /* isolate all but the first PHY */
+ bmcr = mdio_read(dev, i, MII_BMCR);
+ if (first_phy == -1) {
+ first_phy = i;
+ mdio_write(dev, i, MII_BMCR,
+ bmcr & ~BMCR_ISOLATE);
+ } else {
+ mdio_write(dev, i, MII_BMCR,
+ bmcr | BMCR_ISOLATE);
+ }
+ /* use mii_ethtool_sset to setup PHY */
+ lp->mii_if.phy_id = i;
+ ecmd.phy_address = i;
+ if (lp->options & PCNET32_PORT_ASEL) {
+ mii_ethtool_gset(&lp->mii_if, &ecmd);
+ ecmd.autoneg = AUTONEG_ENABLE;
+ }
+ mii_ethtool_sset(&lp->mii_if, &ecmd);
+ }
+ }
+ lp->mii_if.phy_id = first_phy;
+ netif_info(lp, link, dev, "Using PHY number %d\n", first_phy);
+ }
+
+#ifdef DO_DXSUFLO
+ if (lp->dxsuflo) { /* Disable transmit stop on underflow */
+ val = lp->a.read_csr(ioaddr, CSR3);
+ val |= 0x40;
+ lp->a.write_csr(ioaddr, CSR3, val);
+ }
+#endif
+
+ lp->init_block->mode =
+ cpu_to_le16((lp->options & PCNET32_PORT_PORTSEL) << 7);
+ pcnet32_load_multicast(dev);
+
+ if (pcnet32_init_ring(dev)) {
+ rc = -ENOMEM;
+ goto err_free_ring;
+ }
+
+ napi_enable(&lp->napi);
+
+ /* Re-initialize the PCNET32, and start it when done. */
+ lp->a.write_csr(ioaddr, 1, (lp->init_dma_addr & 0xffff));
+ lp->a.write_csr(ioaddr, 2, (lp->init_dma_addr >> 16));
+
+ lp->a.write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */
+ lp->a.write_csr(ioaddr, CSR0, CSR0_INIT);
+
+ netif_start_queue(dev);
+
+ if (lp->chip_version >= PCNET32_79C970A) {
+ /* Print the link status and start the watchdog */
+ pcnet32_check_media(dev, 1);
+ mod_timer(&lp->watchdog_timer, PCNET32_WATCHDOG_TIMEOUT);
+ }
+
+ i = 0;
+ while (i++ < 100)
+ if (lp->a.read_csr(ioaddr, CSR0) & CSR0_IDON)
+ break;
+ /*
+ * We used to clear the InitDone bit, 0x0100, here but Mark Stockton
+ * reports that doing so triggers a bug in the '974.
+ */
+ lp->a.write_csr(ioaddr, CSR0, CSR0_NORMAL);
+
+ netif_printk(lp, ifup, KERN_DEBUG, dev,
+ "pcnet32 open after %d ticks, init block %#x csr0 %4.4x\n",
+ i,
+ (u32) (lp->init_dma_addr),
+ lp->a.read_csr(ioaddr, CSR0));
+
+ spin_unlock_irqrestore(&lp->lock, flags);
+
+ return 0; /* Always succeed */
+
+err_free_ring:
+ /* free any allocated skbuffs */
+ pcnet32_purge_rx_ring(dev);
+
+ /*
+ * Switch back to 16bit mode to avoid problems with dumb
+ * DOS packet driver after a warm reboot
+ */
+ lp->a.write_bcr(ioaddr, 20, 4);
+
+err_free_irq:
+ spin_unlock_irqrestore(&lp->lock, flags);
+ free_irq(dev->irq, dev);
+ return rc;
+}
+
+/*
+ * The LANCE has been halted for one reason or another (busmaster memory
+ * arbitration error, Tx FIFO underflow, driver stopped it to reconfigure,
+ * etc.). Modern LANCE variants always reload their ring-buffer
+ * configuration when restarted, so we must reinitialize our ring
+ * context before restarting. As part of this reinitialization,
+ * find all packets still on the Tx ring and pretend that they had been
+ * sent (in effect, drop the packets on the floor) - the higher-level
+ * protocols will time out and retransmit. It'd be better to shuffle
+ * these skbs to a temp list and then actually re-Tx them after
+ * restarting the chip, but I'm too lazy to do so right now. dplatt@3do.com
+ */
+
+static void pcnet32_purge_tx_ring(struct net_device *dev)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ int i;
+
+ for (i = 0; i < lp->tx_ring_size; i++) {
+ lp->tx_ring[i].status = 0; /* CPU owns buffer */
+ wmb(); /* Make sure adapter sees owner change */
+ if (lp->tx_skbuff[i]) {
+ pci_unmap_single(lp->pci_dev, lp->tx_dma_addr[i],
+ lp->tx_skbuff[i]->len,
+ PCI_DMA_TODEVICE);
+ dev_kfree_skb_any(lp->tx_skbuff[i]);
+ }
+ lp->tx_skbuff[i] = NULL;
+ lp->tx_dma_addr[i] = 0;
+ }
+}
+
+/* Initialize the PCNET32 Rx and Tx rings. */
+static int pcnet32_init_ring(struct net_device *dev)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ int i;
+
+ lp->tx_full = 0;
+ lp->cur_rx = lp->cur_tx = 0;
+ lp->dirty_rx = lp->dirty_tx = 0;
+
+ for (i = 0; i < lp->rx_ring_size; i++) {
+ struct sk_buff *rx_skbuff = lp->rx_skbuff[i];
+ if (rx_skbuff == NULL) {
+ lp->rx_skbuff[i] = dev_alloc_skb(PKT_BUF_SKB);
+ rx_skbuff = lp->rx_skbuff[i];
+ if (!rx_skbuff) {
+ /* there is not much we can do at this point */
+ netif_err(lp, drv, dev, "%s dev_alloc_skb failed\n",
+ __func__);
+ return -1;
+ }
+ skb_reserve(rx_skbuff, NET_IP_ALIGN);
+ }
+
+ rmb();
+ if (lp->rx_dma_addr[i] == 0)
+ lp->rx_dma_addr[i] =
+ pci_map_single(lp->pci_dev, rx_skbuff->data,
+ PKT_BUF_SIZE, PCI_DMA_FROMDEVICE);
+ lp->rx_ring[i].base = cpu_to_le32(lp->rx_dma_addr[i]);
+ lp->rx_ring[i].buf_length = cpu_to_le16(NEG_BUF_SIZE);
+ wmb(); /* Make sure owner changes after all others are visible */
+ lp->rx_ring[i].status = cpu_to_le16(0x8000);
+ }
+ /* The Tx buffer address is filled in as needed, but we do need to clear
+ * the upper ownership bit. */
+ for (i = 0; i < lp->tx_ring_size; i++) {
+ lp->tx_ring[i].status = 0; /* CPU owns buffer */
+ wmb(); /* Make sure adapter sees owner change */
+ lp->tx_ring[i].base = 0;
+ lp->tx_dma_addr[i] = 0;
+ }
+
+ lp->init_block->tlen_rlen =
+ cpu_to_le16(lp->tx_len_bits | lp->rx_len_bits);
+ for (i = 0; i < 6; i++)
+ lp->init_block->phys_addr[i] = dev->dev_addr[i];
+ lp->init_block->rx_ring = cpu_to_le32(lp->rx_ring_dma_addr);
+ lp->init_block->tx_ring = cpu_to_le32(lp->tx_ring_dma_addr);
+ wmb(); /* Make sure all changes are visible */
+ return 0;
+}
+
+/* the pcnet32 has been issued a stop or reset. Wait for the stop bit
+ * then flush the pending transmit operations, re-initialize the ring,
+ * and tell the chip to initialize.
+ */
+static void pcnet32_restart(struct net_device *dev, unsigned int csr0_bits)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ unsigned long ioaddr = dev->base_addr;
+ int i;
+
+ /* wait for stop */
+ for (i = 0; i < 100; i++)
+ if (lp->a.read_csr(ioaddr, CSR0) & CSR0_STOP)
+ break;
+
+ if (i >= 100)
+ netif_err(lp, drv, dev, "%s timed out waiting for stop\n",
+ __func__);
+
+ pcnet32_purge_tx_ring(dev);
+ if (pcnet32_init_ring(dev))
+ return;
+
+ /* ReInit Ring */
+ lp->a.write_csr(ioaddr, CSR0, CSR0_INIT);
+ i = 0;
+ while (i++ < 1000)
+ if (lp->a.read_csr(ioaddr, CSR0) & CSR0_IDON)
+ break;
+
+ lp->a.write_csr(ioaddr, CSR0, csr0_bits);
+}
+
+static void pcnet32_tx_timeout(struct net_device *dev)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ unsigned long ioaddr = dev->base_addr, flags;
+
+ spin_lock_irqsave(&lp->lock, flags);
+ /* Transmitter timeout, serious problems. */
+ if (pcnet32_debug & NETIF_MSG_DRV)
+ pr_err("%s: transmit timed out, status %4.4x, resetting\n",
+ dev->name, lp->a.read_csr(ioaddr, CSR0));
+ lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);
+ dev->stats.tx_errors++;
+ if (netif_msg_tx_err(lp)) {
+ int i;
+ printk(KERN_DEBUG
+ " Ring data dump: dirty_tx %d cur_tx %d%s cur_rx %d.",
+ lp->dirty_tx, lp->cur_tx, lp->tx_full ? " (full)" : "",
+ lp->cur_rx);
+ for (i = 0; i < lp->rx_ring_size; i++)
+ printk("%s %08x %04x %08x %04x", i & 1 ? "" : "\n ",
+ le32_to_cpu(lp->rx_ring[i].base),
+ (-le16_to_cpu(lp->rx_ring[i].buf_length)) &
+ 0xffff, le32_to_cpu(lp->rx_ring[i].msg_length),
+ le16_to_cpu(lp->rx_ring[i].status));
+ for (i = 0; i < lp->tx_ring_size; i++)
+ printk("%s %08x %04x %08x %04x", i & 1 ? "" : "\n ",
+ le32_to_cpu(lp->tx_ring[i].base),
+ (-le16_to_cpu(lp->tx_ring[i].length)) & 0xffff,
+ le32_to_cpu(lp->tx_ring[i].misc),
+ le16_to_cpu(lp->tx_ring[i].status));
+ printk("\n");
+ }
+ pcnet32_restart(dev, CSR0_NORMAL);
+
+ dev->trans_start = jiffies; /* prevent tx timeout */
+ netif_wake_queue(dev);
+
+ spin_unlock_irqrestore(&lp->lock, flags);
+}
+
+static netdev_tx_t pcnet32_start_xmit(struct sk_buff *skb,
+ struct net_device *dev)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ unsigned long ioaddr = dev->base_addr;
+ u16 status;
+ int entry;
+ unsigned long flags;
+
+ spin_lock_irqsave(&lp->lock, flags);
+
+ netif_printk(lp, tx_queued, KERN_DEBUG, dev,
+ "%s() called, csr0 %4.4x\n",
+ __func__, lp->a.read_csr(ioaddr, CSR0));
+
+ /* Default status -- will not enable Successful-TxDone
+ * interrupt when that option is available to us.
+ */
+ status = 0x8300;
+
+ /* Fill in a Tx ring entry */
+
+ /* Mask to ring buffer boundary. */
+ entry = lp->cur_tx & lp->tx_mod_mask;
+
+ /* Caution: the write order is important here, set the status
+ * with the "ownership" bits last. */
+
+ lp->tx_ring[entry].length = cpu_to_le16(-skb->len);
+
+ lp->tx_ring[entry].misc = 0x00000000;
+
+ lp->tx_skbuff[entry] = skb;
+ lp->tx_dma_addr[entry] =
+ pci_map_single(lp->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE);
+ lp->tx_ring[entry].base = cpu_to_le32(lp->tx_dma_addr[entry]);
+ wmb(); /* Make sure owner changes after all others are visible */
+ lp->tx_ring[entry].status = cpu_to_le16(status);
+
+ lp->cur_tx++;
+ dev->stats.tx_bytes += skb->len;
+
+ /* Trigger an immediate send poll. */
+ lp->a.write_csr(ioaddr, CSR0, CSR0_INTEN | CSR0_TXPOLL);
+
+ if (lp->tx_ring[(entry + 1) & lp->tx_mod_mask].base != 0) {
+ lp->tx_full = 1;
+ netif_stop_queue(dev);
+ }
+ spin_unlock_irqrestore(&lp->lock, flags);
+ return NETDEV_TX_OK;
+}
+
+/* The PCNET32 interrupt handler. */
+static irqreturn_t
+pcnet32_interrupt(int irq, void *dev_id)
+{
+ struct net_device *dev = dev_id;
+ struct pcnet32_private *lp;
+ unsigned long ioaddr;
+ u16 csr0;
+ int boguscnt = max_interrupt_work;
+
+ ioaddr = dev->base_addr;
+ lp = netdev_priv(dev);
+
+ spin_lock(&lp->lock);
+
+ csr0 = lp->a.read_csr(ioaddr, CSR0);
+ while ((csr0 & 0x8f00) && --boguscnt >= 0) {
+ if (csr0 == 0xffff)
+ break; /* PCMCIA remove happened */
+ /* Acknowledge all of the current interrupt sources ASAP. */
+ lp->a.write_csr(ioaddr, CSR0, csr0 & ~0x004f);
+
+ netif_printk(lp, intr, KERN_DEBUG, dev,
+ "interrupt csr0=%#2.2x new csr=%#2.2x\n",
+ csr0, lp->a.read_csr(ioaddr, CSR0));
+
+ /* Log misc errors. */
+ if (csr0 & 0x4000)
+ dev->stats.tx_errors++; /* Tx babble. */
+ if (csr0 & 0x1000) {
+ /*
+ * This happens when our receive ring is full. This
+ * shouldn't be a problem as we will see normal rx
+ * interrupts for the frames in the receive ring. But
+ * there are some PCI chipsets (I can reproduce this
+ * on SP3G with Intel saturn chipset) which have
+ * sometimes problems and will fill up the receive
+ * ring with error descriptors. In this situation we
+ * don't get a rx interrupt, but a missed frame
+ * interrupt sooner or later.
+ */
+ dev->stats.rx_errors++; /* Missed a Rx frame. */
+ }
+ if (csr0 & 0x0800) {
+ netif_err(lp, drv, dev, "Bus master arbitration failure, status %4.4x\n",
+ csr0);
+ /* unlike for the lance, there is no restart needed */
+ }
+ if (napi_schedule_prep(&lp->napi)) {
+ u16 val;
+ /* set interrupt masks */
+ val = lp->a.read_csr(ioaddr, CSR3);
+ val |= 0x5f00;
+ lp->a.write_csr(ioaddr, CSR3, val);
+
+ __napi_schedule(&lp->napi);
+ break;
+ }
+ csr0 = lp->a.read_csr(ioaddr, CSR0);
+ }
+
+ netif_printk(lp, intr, KERN_DEBUG, dev,
+ "exiting interrupt, csr0=%#4.4x\n",
+ lp->a.read_csr(ioaddr, CSR0));
+
+ spin_unlock(&lp->lock);
+
+ return IRQ_HANDLED;
+}
+
+static int pcnet32_close(struct net_device *dev)
+{
+ unsigned long ioaddr = dev->base_addr;
+ struct pcnet32_private *lp = netdev_priv(dev);
+ unsigned long flags;
+
+ del_timer_sync(&lp->watchdog_timer);
+
+ netif_stop_queue(dev);
+ napi_disable(&lp->napi);
+
+ spin_lock_irqsave(&lp->lock, flags);
+
+ dev->stats.rx_missed_errors = lp->a.read_csr(ioaddr, 112);
+
+ netif_printk(lp, ifdown, KERN_DEBUG, dev,
+ "Shutting down ethercard, status was %2.2x\n",
+ lp->a.read_csr(ioaddr, CSR0));
+
+ /* We stop the PCNET32 here -- it occasionally polls memory if we don't. */
+ lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);
+
+ /*
+ * Switch back to 16bit mode to avoid problems with dumb
+ * DOS packet driver after a warm reboot
+ */
+ lp->a.write_bcr(ioaddr, 20, 4);
+
+ spin_unlock_irqrestore(&lp->lock, flags);
+
+ free_irq(dev->irq, dev);
+
+ spin_lock_irqsave(&lp->lock, flags);
+
+ pcnet32_purge_rx_ring(dev);
+ pcnet32_purge_tx_ring(dev);
+
+ spin_unlock_irqrestore(&lp->lock, flags);
+
+ return 0;
+}
+
+static struct net_device_stats *pcnet32_get_stats(struct net_device *dev)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ unsigned long ioaddr = dev->base_addr;
+ unsigned long flags;
+
+ spin_lock_irqsave(&lp->lock, flags);
+ dev->stats.rx_missed_errors = lp->a.read_csr(ioaddr, 112);
+ spin_unlock_irqrestore(&lp->lock, flags);
+
+ return &dev->stats;
+}
+
+/* taken from the sunlance driver, which it took from the depca driver */
+static void pcnet32_load_multicast(struct net_device *dev)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ volatile struct pcnet32_init_block *ib = lp->init_block;
+ volatile __le16 *mcast_table = (__le16 *)ib->filter;
+ struct netdev_hw_addr *ha;
+ unsigned long ioaddr = dev->base_addr;
+ int i;
+ u32 crc;
+
+ /* set all multicast bits */
+ if (dev->flags & IFF_ALLMULTI) {
+ ib->filter[0] = cpu_to_le32(~0U);
+ ib->filter[1] = cpu_to_le32(~0U);
+ lp->a.write_csr(ioaddr, PCNET32_MC_FILTER, 0xffff);
+ lp->a.write_csr(ioaddr, PCNET32_MC_FILTER+1, 0xffff);
+ lp->a.write_csr(ioaddr, PCNET32_MC_FILTER+2, 0xffff);
+ lp->a.write_csr(ioaddr, PCNET32_MC_FILTER+3, 0xffff);
+ return;
+ }
+ /* clear the multicast filter */
+ ib->filter[0] = 0;
+ ib->filter[1] = 0;
+
+ /* Add addresses */
+ netdev_for_each_mc_addr(ha, dev) {
+ crc = ether_crc_le(6, ha->addr);
+ crc = crc >> 26;
+ mcast_table[crc >> 4] |= cpu_to_le16(1 << (crc & 0xf));
+ }
+ for (i = 0; i < 4; i++)
+ lp->a.write_csr(ioaddr, PCNET32_MC_FILTER + i,
+ le16_to_cpu(mcast_table[i]));
+}
+
+/*
+ * Set or clear the multicast filter for this adaptor.
+ */
+static void pcnet32_set_multicast_list(struct net_device *dev)
+{
+ unsigned long ioaddr = dev->base_addr, flags;
+ struct pcnet32_private *lp = netdev_priv(dev);
+ int csr15, suspended;
+
+ spin_lock_irqsave(&lp->lock, flags);
+ suspended = pcnet32_suspend(dev, &flags, 0);
+ csr15 = lp->a.read_csr(ioaddr, CSR15);
+ if (dev->flags & IFF_PROMISC) {
+ /* Log any net taps. */
+ netif_info(lp, hw, dev, "Promiscuous mode enabled\n");
+ lp->init_block->mode =
+ cpu_to_le16(0x8000 | (lp->options & PCNET32_PORT_PORTSEL) <<
+ 7);
+ lp->a.write_csr(ioaddr, CSR15, csr15 | 0x8000);
+ } else {
+ lp->init_block->mode =
+ cpu_to_le16((lp->options & PCNET32_PORT_PORTSEL) << 7);
+ lp->a.write_csr(ioaddr, CSR15, csr15 & 0x7fff);
+ pcnet32_load_multicast(dev);
+ }
+
+ if (suspended) {
+ int csr5;
+ /* clear SUSPEND (SPND) - CSR5 bit 0 */
+ csr5 = lp->a.read_csr(ioaddr, CSR5);
+ lp->a.write_csr(ioaddr, CSR5, csr5 & (~CSR5_SUSPEND));
+ } else {
+ lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);
+ pcnet32_restart(dev, CSR0_NORMAL);
+ netif_wake_queue(dev);
+ }
+
+ spin_unlock_irqrestore(&lp->lock, flags);
+}
+
+/* This routine assumes that the lp->lock is held */
+static int mdio_read(struct net_device *dev, int phy_id, int reg_num)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ unsigned long ioaddr = dev->base_addr;
+ u16 val_out;
+
+ if (!lp->mii)
+ return 0;
+
+ lp->a.write_bcr(ioaddr, 33, ((phy_id & 0x1f) << 5) | (reg_num & 0x1f));
+ val_out = lp->a.read_bcr(ioaddr, 34);
+
+ return val_out;
+}
+
+/* This routine assumes that the lp->lock is held */
+static void mdio_write(struct net_device *dev, int phy_id, int reg_num, int val)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ unsigned long ioaddr = dev->base_addr;
+
+ if (!lp->mii)
+ return;
+
+ lp->a.write_bcr(ioaddr, 33, ((phy_id & 0x1f) << 5) | (reg_num & 0x1f));
+ lp->a.write_bcr(ioaddr, 34, val);
+}
+
+static int pcnet32_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ int rc;
+ unsigned long flags;
+
+ /* SIOC[GS]MIIxxx ioctls */
+ if (lp->mii) {
+ spin_lock_irqsave(&lp->lock, flags);
+ rc = generic_mii_ioctl(&lp->mii_if, if_mii(rq), cmd, NULL);
+ spin_unlock_irqrestore(&lp->lock, flags);
+ } else {
+ rc = -EOPNOTSUPP;
+ }
+
+ return rc;
+}
+
+static int pcnet32_check_otherphy(struct net_device *dev)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ struct mii_if_info mii = lp->mii_if;
+ u16 bmcr;
+ int i;
+
+ for (i = 0; i < PCNET32_MAX_PHYS; i++) {
+ if (i == lp->mii_if.phy_id)
+ continue; /* skip active phy */
+ if (lp->phymask & (1 << i)) {
+ mii.phy_id = i;
+ if (mii_link_ok(&mii)) {
+ /* found PHY with active link */
+ netif_info(lp, link, dev, "Using PHY number %d\n",
+ i);
+
+ /* isolate inactive phy */
+ bmcr =
+ mdio_read(dev, lp->mii_if.phy_id, MII_BMCR);
+ mdio_write(dev, lp->mii_if.phy_id, MII_BMCR,
+ bmcr | BMCR_ISOLATE);
+
+ /* de-isolate new phy */
+ bmcr = mdio_read(dev, i, MII_BMCR);
+ mdio_write(dev, i, MII_BMCR,
+ bmcr & ~BMCR_ISOLATE);
+
+ /* set new phy address */
+ lp->mii_if.phy_id = i;
+ return 1;
+ }
+ }
+ }
+ return 0;
+}
+
+/*
+ * Show the status of the media. Similar to mii_check_media however it
+ * correctly shows the link speed for all (tested) pcnet32 variants.
+ * Devices with no mii just report link state without speed.
+ *
+ * Caller is assumed to hold and release the lp->lock.
+ */
+
+static void pcnet32_check_media(struct net_device *dev, int verbose)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ int curr_link;
+ int prev_link = netif_carrier_ok(dev) ? 1 : 0;
+ u32 bcr9;
+
+ if (lp->mii) {
+ curr_link = mii_link_ok(&lp->mii_if);
+ } else {
+ ulong ioaddr = dev->base_addr; /* card base I/O address */
+ curr_link = (lp->a.read_bcr(ioaddr, 4) != 0xc0);
+ }
+ if (!curr_link) {
+ if (prev_link || verbose) {
+ netif_carrier_off(dev);
+ netif_info(lp, link, dev, "link down\n");
+ }
+ if (lp->phycount > 1) {
+ curr_link = pcnet32_check_otherphy(dev);
+ prev_link = 0;
+ }
+ } else if (verbose || !prev_link) {
+ netif_carrier_on(dev);
+ if (lp->mii) {
+ if (netif_msg_link(lp)) {
+ struct ethtool_cmd ecmd = {
+ .cmd = ETHTOOL_GSET };
+ mii_ethtool_gset(&lp->mii_if, &ecmd);
+ netdev_info(dev, "link up, %uMbps, %s-duplex\n",
+ ethtool_cmd_speed(&ecmd),
+ (ecmd.duplex == DUPLEX_FULL)
+ ? "full" : "half");
+ }
+ bcr9 = lp->a.read_bcr(dev->base_addr, 9);
+ if ((bcr9 & (1 << 0)) != lp->mii_if.full_duplex) {
+ if (lp->mii_if.full_duplex)
+ bcr9 |= (1 << 0);
+ else
+ bcr9 &= ~(1 << 0);
+ lp->a.write_bcr(dev->base_addr, 9, bcr9);
+ }
+ } else {
+ netif_info(lp, link, dev, "link up\n");
+ }
+ }
+}
+
+/*
+ * Check for loss of link and link establishment.
+ * Can not use mii_check_media because it does nothing if mode is forced.
+ */
+
+static void pcnet32_watchdog(struct net_device *dev)
+{
+ struct pcnet32_private *lp = netdev_priv(dev);
+ unsigned long flags;
+
+ /* Print the link status if it has changed */
+ spin_lock_irqsave(&lp->lock, flags);
+ pcnet32_check_media(dev, 0);
+ spin_unlock_irqrestore(&lp->lock, flags);
+
+ mod_timer(&lp->watchdog_timer, round_jiffies(PCNET32_WATCHDOG_TIMEOUT));
+}
+
+static int pcnet32_pm_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+ struct net_device *dev = pci_get_drvdata(pdev);
+
+ if (netif_running(dev)) {
+ netif_device_detach(dev);
+ pcnet32_close(dev);
+ }
+ pci_save_state(pdev);
+ pci_set_power_state(pdev, pci_choose_state(pdev, state));
+ return 0;
+}
+
+static int pcnet32_pm_resume(struct pci_dev *pdev)
+{
+ struct net_device *dev = pci_get_drvdata(pdev);
+
+ pci_set_power_state(pdev, PCI_D0);
+ pci_restore_state(pdev);
+
+ if (netif_running(dev)) {
+ pcnet32_open(dev);
+ netif_device_attach(dev);
+ }
+ return 0;
+}
+
+static void __devexit pcnet32_remove_one(struct pci_dev *pdev)
+{
+ struct net_device *dev = pci_get_drvdata(pdev);
+
+ if (dev) {
+ struct pcnet32_private *lp = netdev_priv(dev);
+
+ unregister_netdev(dev);
+ pcnet32_free_ring(dev);
+ release_region(dev->base_addr, PCNET32_TOTAL_SIZE);
+ pci_free_consistent(lp->pci_dev, sizeof(*lp->init_block),
+ lp->init_block, lp->init_dma_addr);
+ free_netdev(dev);
+ pci_disable_device(pdev);
+ pci_set_drvdata(pdev, NULL);
+ }
+}
+
+static struct pci_driver pcnet32_driver = {
+ .name = DRV_NAME,
+ .probe = pcnet32_probe_pci,
+ .remove = __devexit_p(pcnet32_remove_one),
+ .id_table = pcnet32_pci_tbl,
+ .suspend = pcnet32_pm_suspend,
+ .resume = pcnet32_pm_resume,
+};
+
+/* An additional parameter that may be passed in... */
+static int debug = -1;
+static int tx_start_pt = -1;
+static int pcnet32_have_pci;
+
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, DRV_NAME " debug level");
+module_param(max_interrupt_work, int, 0);
+MODULE_PARM_DESC(max_interrupt_work,
+ DRV_NAME " maximum events handled per interrupt");
+module_param(rx_copybreak, int, 0);
+MODULE_PARM_DESC(rx_copybreak,
+ DRV_NAME " copy breakpoint for copy-only-tiny-frames");
+module_param(tx_start_pt, int, 0);
+MODULE_PARM_DESC(tx_start_pt, DRV_NAME " transmit start point (0-3)");
+module_param(pcnet32vlb, int, 0);
+MODULE_PARM_DESC(pcnet32vlb, DRV_NAME " Vesa local bus (VLB) support (0/1)");
+module_param_array(options, int, NULL, 0);
+MODULE_PARM_DESC(options, DRV_NAME " initial option setting(s) (0-15)");
+module_param_array(full_duplex, int, NULL, 0);
+MODULE_PARM_DESC(full_duplex, DRV_NAME " full duplex setting(s) (1)");
+/* Module Parameter for HomePNA cards added by Patrick Simmons, 2004 */
+module_param_array(homepna, int, NULL, 0);
+MODULE_PARM_DESC(homepna,
+ DRV_NAME
+ " mode for 79C978 cards (1 for HomePNA, 0 for Ethernet, default Ethernet");
+
+MODULE_AUTHOR("Thomas Bogendoerfer");
+MODULE_DESCRIPTION("Driver for PCnet32 and PCnetPCI based ethercards");
+MODULE_LICENSE("GPL");
+
+#define PCNET32_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
+
+static int __init pcnet32_init_module(void)
+{
+ pr_info("%s", version);
+
+ pcnet32_debug = netif_msg_init(debug, PCNET32_MSG_DEFAULT);
+
+ if ((tx_start_pt >= 0) && (tx_start_pt <= 3))
+ tx_start = tx_start_pt;
+
+ /* find the PCI devices */
+ if (!pci_register_driver(&pcnet32_driver))
+ pcnet32_have_pci = 1;
+
+ /* should we find any remaining VLbus devices ? */
+ if (pcnet32vlb)
+ pcnet32_probe_vlbus(pcnet32_portlist);
+
+ if (cards_found && (pcnet32_debug & NETIF_MSG_PROBE))
+ pr_info("%d cards_found\n", cards_found);
+
+ return (pcnet32_have_pci + cards_found) ? 0 : -ENODEV;
+}
+
+static void __exit pcnet32_cleanup_module(void)
+{
+ struct net_device *next_dev;
+
+ while (pcnet32_dev) {
+ struct pcnet32_private *lp = netdev_priv(pcnet32_dev);
+ next_dev = lp->next;
+ unregister_netdev(pcnet32_dev);
+ pcnet32_free_ring(pcnet32_dev);
+ release_region(pcnet32_dev->base_addr, PCNET32_TOTAL_SIZE);
+ pci_free_consistent(lp->pci_dev, sizeof(*lp->init_block),
+ lp->init_block, lp->init_dma_addr);
+ free_netdev(pcnet32_dev);
+ pcnet32_dev = next_dev;
+ }
+
+ if (pcnet32_have_pci)
+ pci_unregister_driver(&pcnet32_driver);
+}
+
+module_init(pcnet32_init_module);
+module_exit(pcnet32_cleanup_module);
+
+/*
+ * Local variables:
+ * c-indent-level: 4
+ * tab-width: 8
+ * End:
+ */
--- /dev/null
- /* We don't want TPA on FCoE, FWD and OOO L2 rings */
- bnx2x_fcoe(bp, disable_tpa) = 1;
+/* bnx2x_cmn.c: Broadcom Everest network driver.
+ *
+ * Copyright (c) 2007-2011 Broadcom Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation.
+ *
+ * Maintained by: Eilon Greenstein <eilong@broadcom.com>
+ * Written by: Eliezer Tamir
+ * Based on code from Michael Chan's bnx2 driver
+ * UDP CSUM errata workaround by Arik Gendelman
+ * Slowpath and fastpath rework by Vladislav Zolotarov
+ * Statistics and Link management by Yitchak Gertner
+ *
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/etherdevice.h>
+#include <linux/if_vlan.h>
+#include <linux/interrupt.h>
+#include <linux/ip.h>
+#include <net/ipv6.h>
+#include <net/ip6_checksum.h>
+#include <linux/firmware.h>
+#include <linux/prefetch.h>
+#include "bnx2x_cmn.h"
+#include "bnx2x_init.h"
+#include "bnx2x_sp.h"
+
+
+
+/**
+ * bnx2x_bz_fp - zero content of the fastpath structure.
+ *
+ * @bp: driver handle
+ * @index: fastpath index to be zeroed
+ *
+ * Makes sure the contents of the bp->fp[index].napi is kept
+ * intact.
+ */
+static inline void bnx2x_bz_fp(struct bnx2x *bp, int index)
+{
+ struct bnx2x_fastpath *fp = &bp->fp[index];
+ struct napi_struct orig_napi = fp->napi;
+ /* bzero bnx2x_fastpath contents */
+ memset(fp, 0, sizeof(*fp));
+
+ /* Restore the NAPI object as it has been already initialized */
+ fp->napi = orig_napi;
+
+ fp->bp = bp;
+ fp->index = index;
+ if (IS_ETH_FP(fp))
+ fp->max_cos = bp->max_cos;
+ else
+ /* Special queues support only one CoS */
+ fp->max_cos = 1;
+
+ /*
+ * set the tpa flag for each queue. The tpa flag determines the queue
+ * minimal size so it must be set prior to queue memory allocation
+ */
+ fp->disable_tpa = ((bp->flags & TPA_ENABLE_FLAG) == 0);
+
+#ifdef BCM_CNIC
- if (NO_FCOE(bp))
- return skb_tx_hash(dev, skb);
- else {
++ /* We don't want TPA on an FCoE L2 ring */
++ if (IS_FCOE_FP(fp))
++ fp->disable_tpa = 1;
+#endif
+}
+
+/**
+ * bnx2x_move_fp - move content of the fastpath structure.
+ *
+ * @bp: driver handle
+ * @from: source FP index
+ * @to: destination FP index
+ *
+ * Makes sure the contents of the bp->fp[to].napi is kept
+ * intact.
+ */
+static inline void bnx2x_move_fp(struct bnx2x *bp, int from, int to)
+{
+ struct bnx2x_fastpath *from_fp = &bp->fp[from];
+ struct bnx2x_fastpath *to_fp = &bp->fp[to];
+ struct napi_struct orig_napi = to_fp->napi;
+ /* Move bnx2x_fastpath contents */
+ memcpy(to_fp, from_fp, sizeof(*to_fp));
+ to_fp->index = to;
+
+ /* Restore the NAPI object as it has been already initialized */
+ to_fp->napi = orig_napi;
+}
+
+int load_count[2][3] = { {0} }; /* per-path: 0-common, 1-port0, 2-port1 */
+
+/* free skb in the packet ring at pos idx
+ * return idx of last bd freed
+ */
+static u16 bnx2x_free_tx_pkt(struct bnx2x *bp, struct bnx2x_fp_txdata *txdata,
+ u16 idx)
+{
+ struct sw_tx_bd *tx_buf = &txdata->tx_buf_ring[idx];
+ struct eth_tx_start_bd *tx_start_bd;
+ struct eth_tx_bd *tx_data_bd;
+ struct sk_buff *skb = tx_buf->skb;
+ u16 bd_idx = TX_BD(tx_buf->first_bd), new_cons;
+ int nbd;
+
+ /* prefetch skb end pointer to speedup dev_kfree_skb() */
+ prefetch(&skb->end);
+
+ DP(BNX2X_MSG_FP, "fp[%d]: pkt_idx %d buff @(%p)->skb %p\n",
+ txdata->txq_index, idx, tx_buf, skb);
+
+ /* unmap first bd */
+ DP(BNX2X_MSG_OFF, "free bd_idx %d\n", bd_idx);
+ tx_start_bd = &txdata->tx_desc_ring[bd_idx].start_bd;
+ dma_unmap_single(&bp->pdev->dev, BD_UNMAP_ADDR(tx_start_bd),
+ BD_UNMAP_LEN(tx_start_bd), DMA_TO_DEVICE);
+
+
+ nbd = le16_to_cpu(tx_start_bd->nbd) - 1;
+#ifdef BNX2X_STOP_ON_ERROR
+ if ((nbd - 1) > (MAX_SKB_FRAGS + 2)) {
+ BNX2X_ERR("BAD nbd!\n");
+ bnx2x_panic();
+ }
+#endif
+ new_cons = nbd + tx_buf->first_bd;
+
+ /* Get the next bd */
+ bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
+
+ /* Skip a parse bd... */
+ --nbd;
+ bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
+
+ /* ...and the TSO split header bd since they have no mapping */
+ if (tx_buf->flags & BNX2X_TSO_SPLIT_BD) {
+ --nbd;
+ bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
+ }
+
+ /* now free frags */
+ while (nbd > 0) {
+
+ DP(BNX2X_MSG_OFF, "free frag bd_idx %d\n", bd_idx);
+ tx_data_bd = &txdata->tx_desc_ring[bd_idx].reg_bd;
+ dma_unmap_page(&bp->pdev->dev, BD_UNMAP_ADDR(tx_data_bd),
+ BD_UNMAP_LEN(tx_data_bd), DMA_TO_DEVICE);
+ if (--nbd)
+ bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
+ }
+
+ /* release skb */
+ WARN_ON(!skb);
+ dev_kfree_skb_any(skb);
+ tx_buf->first_bd = 0;
+ tx_buf->skb = NULL;
+
+ return new_cons;
+}
+
+int bnx2x_tx_int(struct bnx2x *bp, struct bnx2x_fp_txdata *txdata)
+{
+ struct netdev_queue *txq;
+ u16 hw_cons, sw_cons, bd_cons = txdata->tx_bd_cons;
+
+#ifdef BNX2X_STOP_ON_ERROR
+ if (unlikely(bp->panic))
+ return -1;
+#endif
+
+ txq = netdev_get_tx_queue(bp->dev, txdata->txq_index);
+ hw_cons = le16_to_cpu(*txdata->tx_cons_sb);
+ sw_cons = txdata->tx_pkt_cons;
+
+ while (sw_cons != hw_cons) {
+ u16 pkt_cons;
+
+ pkt_cons = TX_BD(sw_cons);
+
+ DP(NETIF_MSG_TX_DONE, "queue[%d]: hw_cons %u sw_cons %u "
+ " pkt_cons %u\n",
+ txdata->txq_index, hw_cons, sw_cons, pkt_cons);
+
+ bd_cons = bnx2x_free_tx_pkt(bp, txdata, pkt_cons);
+ sw_cons++;
+ }
+
+ txdata->tx_pkt_cons = sw_cons;
+ txdata->tx_bd_cons = bd_cons;
+
+ /* Need to make the tx_bd_cons update visible to start_xmit()
+ * before checking for netif_tx_queue_stopped(). Without the
+ * memory barrier, there is a small possibility that
+ * start_xmit() will miss it and cause the queue to be stopped
+ * forever.
+ * On the other hand we need an rmb() here to ensure the proper
+ * ordering of bit testing in the following
+ * netif_tx_queue_stopped(txq) call.
+ */
+ smp_mb();
+
+ if (unlikely(netif_tx_queue_stopped(txq))) {
+ /* Taking tx_lock() is needed to prevent reenabling the queue
+ * while it's empty. This could have happen if rx_action() gets
+ * suspended in bnx2x_tx_int() after the condition before
+ * netif_tx_wake_queue(), while tx_action (bnx2x_start_xmit()):
+ *
+ * stops the queue->sees fresh tx_bd_cons->releases the queue->
+ * sends some packets consuming the whole queue again->
+ * stops the queue
+ */
+
+ __netif_tx_lock(txq, smp_processor_id());
+
+ if ((netif_tx_queue_stopped(txq)) &&
+ (bp->state == BNX2X_STATE_OPEN) &&
+ (bnx2x_tx_avail(bp, txdata) >= MAX_SKB_FRAGS + 3))
+ netif_tx_wake_queue(txq);
+
+ __netif_tx_unlock(txq);
+ }
+ return 0;
+}
+
+static inline void bnx2x_update_last_max_sge(struct bnx2x_fastpath *fp,
+ u16 idx)
+{
+ u16 last_max = fp->last_max_sge;
+
+ if (SUB_S16(idx, last_max) > 0)
+ fp->last_max_sge = idx;
+}
+
+static void bnx2x_update_sge_prod(struct bnx2x_fastpath *fp,
+ struct eth_fast_path_rx_cqe *fp_cqe)
+{
+ struct bnx2x *bp = fp->bp;
+ u16 sge_len = SGE_PAGE_ALIGN(le16_to_cpu(fp_cqe->pkt_len) -
+ le16_to_cpu(fp_cqe->len_on_bd)) >>
+ SGE_PAGE_SHIFT;
+ u16 last_max, last_elem, first_elem;
+ u16 delta = 0;
+ u16 i;
+
+ if (!sge_len)
+ return;
+
+ /* First mark all used pages */
+ for (i = 0; i < sge_len; i++)
+ BIT_VEC64_CLEAR_BIT(fp->sge_mask,
+ RX_SGE(le16_to_cpu(fp_cqe->sgl_or_raw_data.sgl[i])));
+
+ DP(NETIF_MSG_RX_STATUS, "fp_cqe->sgl[%d] = %d\n",
+ sge_len - 1, le16_to_cpu(fp_cqe->sgl_or_raw_data.sgl[sge_len - 1]));
+
+ /* Here we assume that the last SGE index is the biggest */
+ prefetch((void *)(fp->sge_mask));
+ bnx2x_update_last_max_sge(fp,
+ le16_to_cpu(fp_cqe->sgl_or_raw_data.sgl[sge_len - 1]));
+
+ last_max = RX_SGE(fp->last_max_sge);
+ last_elem = last_max >> BIT_VEC64_ELEM_SHIFT;
+ first_elem = RX_SGE(fp->rx_sge_prod) >> BIT_VEC64_ELEM_SHIFT;
+
+ /* If ring is not full */
+ if (last_elem + 1 != first_elem)
+ last_elem++;
+
+ /* Now update the prod */
+ for (i = first_elem; i != last_elem; i = NEXT_SGE_MASK_ELEM(i)) {
+ if (likely(fp->sge_mask[i]))
+ break;
+
+ fp->sge_mask[i] = BIT_VEC64_ELEM_ONE_MASK;
+ delta += BIT_VEC64_ELEM_SZ;
+ }
+
+ if (delta > 0) {
+ fp->rx_sge_prod += delta;
+ /* clear page-end entries */
+ bnx2x_clear_sge_mask_next_elems(fp);
+ }
+
+ DP(NETIF_MSG_RX_STATUS,
+ "fp->last_max_sge = %d fp->rx_sge_prod = %d\n",
+ fp->last_max_sge, fp->rx_sge_prod);
+}
+
+static void bnx2x_tpa_start(struct bnx2x_fastpath *fp, u16 queue,
+ struct sk_buff *skb, u16 cons, u16 prod,
+ struct eth_fast_path_rx_cqe *cqe)
+{
+ struct bnx2x *bp = fp->bp;
+ struct sw_rx_bd *cons_rx_buf = &fp->rx_buf_ring[cons];
+ struct sw_rx_bd *prod_rx_buf = &fp->rx_buf_ring[prod];
+ struct eth_rx_bd *prod_bd = &fp->rx_desc_ring[prod];
+ dma_addr_t mapping;
+ struct bnx2x_agg_info *tpa_info = &fp->tpa_info[queue];
+ struct sw_rx_bd *first_buf = &tpa_info->first_buf;
+
+ /* print error if current state != stop */
+ if (tpa_info->tpa_state != BNX2X_TPA_STOP)
+ BNX2X_ERR("start of bin not in stop [%d]\n", queue);
+
+ /* Try to map an empty skb from the aggregation info */
+ mapping = dma_map_single(&bp->pdev->dev,
+ first_buf->skb->data,
+ fp->rx_buf_size, DMA_FROM_DEVICE);
+ /*
+ * ...if it fails - move the skb from the consumer to the producer
+ * and set the current aggregation state as ERROR to drop it
+ * when TPA_STOP arrives.
+ */
+
+ if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
+ /* Move the BD from the consumer to the producer */
+ bnx2x_reuse_rx_skb(fp, cons, prod);
+ tpa_info->tpa_state = BNX2X_TPA_ERROR;
+ return;
+ }
+
+ /* move empty skb from pool to prod */
+ prod_rx_buf->skb = first_buf->skb;
+ dma_unmap_addr_set(prod_rx_buf, mapping, mapping);
+ /* point prod_bd to new skb */
+ prod_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
+ prod_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
+
+ /* move partial skb from cons to pool (don't unmap yet) */
+ *first_buf = *cons_rx_buf;
+
+ /* mark bin state as START */
+ tpa_info->parsing_flags =
+ le16_to_cpu(cqe->pars_flags.flags);
+ tpa_info->vlan_tag = le16_to_cpu(cqe->vlan_tag);
+ tpa_info->tpa_state = BNX2X_TPA_START;
+ tpa_info->len_on_bd = le16_to_cpu(cqe->len_on_bd);
+ tpa_info->placement_offset = cqe->placement_offset;
+
+#ifdef BNX2X_STOP_ON_ERROR
+ fp->tpa_queue_used |= (1 << queue);
+#ifdef _ASM_GENERIC_INT_L64_H
+ DP(NETIF_MSG_RX_STATUS, "fp->tpa_queue_used = 0x%lx\n",
+#else
+ DP(NETIF_MSG_RX_STATUS, "fp->tpa_queue_used = 0x%llx\n",
+#endif
+ fp->tpa_queue_used);
+#endif
+}
+
+/* Timestamp option length allowed for TPA aggregation:
+ *
+ * nop nop kind length echo val
+ */
+#define TPA_TSTAMP_OPT_LEN 12
+/**
+ * bnx2x_set_lro_mss - calculate the approximate value of the MSS
+ *
+ * @bp: driver handle
+ * @parsing_flags: parsing flags from the START CQE
+ * @len_on_bd: total length of the first packet for the
+ * aggregation.
+ *
+ * Approximate value of the MSS for this aggregation calculated using
+ * the first packet of it.
+ */
+static inline u16 bnx2x_set_lro_mss(struct bnx2x *bp, u16 parsing_flags,
+ u16 len_on_bd)
+{
+ /*
+ * TPA arrgregation won't have either IP options or TCP options
+ * other than timestamp or IPv6 extension headers.
+ */
+ u16 hdrs_len = ETH_HLEN + sizeof(struct tcphdr);
+
+ if (GET_FLAG(parsing_flags, PARSING_FLAGS_OVER_ETHERNET_PROTOCOL) ==
+ PRS_FLAG_OVERETH_IPV6)
+ hdrs_len += sizeof(struct ipv6hdr);
+ else /* IPv4 */
+ hdrs_len += sizeof(struct iphdr);
+
+
+ /* Check if there was a TCP timestamp, if there is it's will
+ * always be 12 bytes length: nop nop kind length echo val.
+ *
+ * Otherwise FW would close the aggregation.
+ */
+ if (parsing_flags & PARSING_FLAGS_TIME_STAMP_EXIST_FLAG)
+ hdrs_len += TPA_TSTAMP_OPT_LEN;
+
+ return len_on_bd - hdrs_len;
+}
+
+static int bnx2x_fill_frag_skb(struct bnx2x *bp, struct bnx2x_fastpath *fp,
+ u16 queue, struct sk_buff *skb,
+ struct eth_end_agg_rx_cqe *cqe,
+ u16 cqe_idx)
+{
+ struct sw_rx_page *rx_pg, old_rx_pg;
+ u32 i, frag_len, frag_size, pages;
+ int err;
+ int j;
+ struct bnx2x_agg_info *tpa_info = &fp->tpa_info[queue];
+ u16 len_on_bd = tpa_info->len_on_bd;
+
+ frag_size = le16_to_cpu(cqe->pkt_len) - len_on_bd;
+ pages = SGE_PAGE_ALIGN(frag_size) >> SGE_PAGE_SHIFT;
+
+ /* This is needed in order to enable forwarding support */
+ if (frag_size)
+ skb_shinfo(skb)->gso_size = bnx2x_set_lro_mss(bp,
+ tpa_info->parsing_flags, len_on_bd);
+
+#ifdef BNX2X_STOP_ON_ERROR
+ if (pages > min_t(u32, 8, MAX_SKB_FRAGS)*SGE_PAGE_SIZE*PAGES_PER_SGE) {
+ BNX2X_ERR("SGL length is too long: %d. CQE index is %d\n",
+ pages, cqe_idx);
+ BNX2X_ERR("cqe->pkt_len = %d\n", cqe->pkt_len);
+ bnx2x_panic();
+ return -EINVAL;
+ }
+#endif
+
+ /* Run through the SGL and compose the fragmented skb */
+ for (i = 0, j = 0; i < pages; i += PAGES_PER_SGE, j++) {
+ u16 sge_idx = RX_SGE(le16_to_cpu(cqe->sgl_or_raw_data.sgl[j]));
+
+ /* FW gives the indices of the SGE as if the ring is an array
+ (meaning that "next" element will consume 2 indices) */
+ frag_len = min(frag_size, (u32)(SGE_PAGE_SIZE*PAGES_PER_SGE));
+ rx_pg = &fp->rx_page_ring[sge_idx];
+ old_rx_pg = *rx_pg;
+
+ /* If we fail to allocate a substitute page, we simply stop
+ where we are and drop the whole packet */
+ err = bnx2x_alloc_rx_sge(bp, fp, sge_idx);
+ if (unlikely(err)) {
+ fp->eth_q_stats.rx_skb_alloc_failed++;
+ return err;
+ }
+
+ /* Unmap the page as we r going to pass it to the stack */
+ dma_unmap_page(&bp->pdev->dev,
+ dma_unmap_addr(&old_rx_pg, mapping),
+ SGE_PAGE_SIZE*PAGES_PER_SGE, DMA_FROM_DEVICE);
+
+ /* Add one frag and update the appropriate fields in the skb */
+ skb_fill_page_desc(skb, j, old_rx_pg.page, 0, frag_len);
+
+ skb->data_len += frag_len;
+ skb->truesize += frag_len;
+ skb->len += frag_len;
+
+ frag_size -= frag_len;
+ }
+
+ return 0;
+}
+
+static void bnx2x_tpa_stop(struct bnx2x *bp, struct bnx2x_fastpath *fp,
+ u16 queue, struct eth_end_agg_rx_cqe *cqe,
+ u16 cqe_idx)
+{
+ struct bnx2x_agg_info *tpa_info = &fp->tpa_info[queue];
+ struct sw_rx_bd *rx_buf = &tpa_info->first_buf;
+ u8 pad = tpa_info->placement_offset;
+ u16 len = tpa_info->len_on_bd;
+ struct sk_buff *skb = rx_buf->skb;
+ /* alloc new skb */
+ struct sk_buff *new_skb;
+ u8 old_tpa_state = tpa_info->tpa_state;
+
+ tpa_info->tpa_state = BNX2X_TPA_STOP;
+
+ /* If we there was an error during the handling of the TPA_START -
+ * drop this aggregation.
+ */
+ if (old_tpa_state == BNX2X_TPA_ERROR)
+ goto drop;
+
+ /* Try to allocate the new skb */
+ new_skb = netdev_alloc_skb(bp->dev, fp->rx_buf_size);
+
+ /* Unmap skb in the pool anyway, as we are going to change
+ pool entry status to BNX2X_TPA_STOP even if new skb allocation
+ fails. */
+ dma_unmap_single(&bp->pdev->dev, dma_unmap_addr(rx_buf, mapping),
+ fp->rx_buf_size, DMA_FROM_DEVICE);
+
+ if (likely(new_skb)) {
+ prefetch(skb);
+ prefetch(((char *)(skb)) + L1_CACHE_BYTES);
+
+#ifdef BNX2X_STOP_ON_ERROR
+ if (pad + len > fp->rx_buf_size) {
+ BNX2X_ERR("skb_put is about to fail... "
+ "pad %d len %d rx_buf_size %d\n",
+ pad, len, fp->rx_buf_size);
+ bnx2x_panic();
+ return;
+ }
+#endif
+
+ skb_reserve(skb, pad);
+ skb_put(skb, len);
+
+ skb->protocol = eth_type_trans(skb, bp->dev);
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+
+ if (!bnx2x_fill_frag_skb(bp, fp, queue, skb, cqe, cqe_idx)) {
+ if (tpa_info->parsing_flags & PARSING_FLAGS_VLAN)
+ __vlan_hwaccel_put_tag(skb, tpa_info->vlan_tag);
+ napi_gro_receive(&fp->napi, skb);
+ } else {
+ DP(NETIF_MSG_RX_STATUS, "Failed to allocate new pages"
+ " - dropping packet!\n");
+ dev_kfree_skb_any(skb);
+ }
+
+
+ /* put new skb in bin */
+ rx_buf->skb = new_skb;
+
+ return;
+ }
+
+drop:
+ /* drop the packet and keep the buffer in the bin */
+ DP(NETIF_MSG_RX_STATUS,
+ "Failed to allocate or map a new skb - dropping packet!\n");
+ fp->eth_q_stats.rx_skb_alloc_failed++;
+}
+
+/* Set Toeplitz hash value in the skb using the value from the
+ * CQE (calculated by HW).
+ */
+static inline void bnx2x_set_skb_rxhash(struct bnx2x *bp, union eth_rx_cqe *cqe,
+ struct sk_buff *skb)
+{
+ /* Set Toeplitz hash from CQE */
+ if ((bp->dev->features & NETIF_F_RXHASH) &&
+ (cqe->fast_path_cqe.status_flags &
+ ETH_FAST_PATH_RX_CQE_RSS_HASH_FLG))
+ skb->rxhash =
+ le32_to_cpu(cqe->fast_path_cqe.rss_hash_result);
+}
+
+int bnx2x_rx_int(struct bnx2x_fastpath *fp, int budget)
+{
+ struct bnx2x *bp = fp->bp;
+ u16 bd_cons, bd_prod, bd_prod_fw, comp_ring_cons;
+ u16 hw_comp_cons, sw_comp_cons, sw_comp_prod;
+ int rx_pkt = 0;
+
+#ifdef BNX2X_STOP_ON_ERROR
+ if (unlikely(bp->panic))
+ return 0;
+#endif
+
+ /* CQ "next element" is of the size of the regular element,
+ that's why it's ok here */
+ hw_comp_cons = le16_to_cpu(*fp->rx_cons_sb);
+ if ((hw_comp_cons & MAX_RCQ_DESC_CNT) == MAX_RCQ_DESC_CNT)
+ hw_comp_cons++;
+
+ bd_cons = fp->rx_bd_cons;
+ bd_prod = fp->rx_bd_prod;
+ bd_prod_fw = bd_prod;
+ sw_comp_cons = fp->rx_comp_cons;
+ sw_comp_prod = fp->rx_comp_prod;
+
+ /* Memory barrier necessary as speculative reads of the rx
+ * buffer can be ahead of the index in the status block
+ */
+ rmb();
+
+ DP(NETIF_MSG_RX_STATUS,
+ "queue[%d]: hw_comp_cons %u sw_comp_cons %u\n",
+ fp->index, hw_comp_cons, sw_comp_cons);
+
+ while (sw_comp_cons != hw_comp_cons) {
+ struct sw_rx_bd *rx_buf = NULL;
+ struct sk_buff *skb;
+ union eth_rx_cqe *cqe;
+ struct eth_fast_path_rx_cqe *cqe_fp;
+ u8 cqe_fp_flags;
+ enum eth_rx_cqe_type cqe_fp_type;
+ u16 len, pad;
+
+#ifdef BNX2X_STOP_ON_ERROR
+ if (unlikely(bp->panic))
+ return 0;
+#endif
+
+ comp_ring_cons = RCQ_BD(sw_comp_cons);
+ bd_prod = RX_BD(bd_prod);
+ bd_cons = RX_BD(bd_cons);
+
+ /* Prefetch the page containing the BD descriptor
+ at producer's index. It will be needed when new skb is
+ allocated */
+ prefetch((void *)(PAGE_ALIGN((unsigned long)
+ (&fp->rx_desc_ring[bd_prod])) -
+ PAGE_SIZE + 1));
+
+ cqe = &fp->rx_comp_ring[comp_ring_cons];
+ cqe_fp = &cqe->fast_path_cqe;
+ cqe_fp_flags = cqe_fp->type_error_flags;
+ cqe_fp_type = cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE;
+
+ DP(NETIF_MSG_RX_STATUS, "CQE type %x err %x status %x"
+ " queue %x vlan %x len %u\n", CQE_TYPE(cqe_fp_flags),
+ cqe_fp_flags, cqe_fp->status_flags,
+ le32_to_cpu(cqe_fp->rss_hash_result),
+ le16_to_cpu(cqe_fp->vlan_tag), le16_to_cpu(cqe_fp->pkt_len));
+
+ /* is this a slowpath msg? */
+ if (unlikely(CQE_TYPE_SLOW(cqe_fp_type))) {
+ bnx2x_sp_event(fp, cqe);
+ goto next_cqe;
+
+ /* this is an rx packet */
+ } else {
+ rx_buf = &fp->rx_buf_ring[bd_cons];
+ skb = rx_buf->skb;
+ prefetch(skb);
+
+ if (!CQE_TYPE_FAST(cqe_fp_type)) {
+#ifdef BNX2X_STOP_ON_ERROR
+ /* sanity check */
+ if (fp->disable_tpa &&
+ (CQE_TYPE_START(cqe_fp_type) ||
+ CQE_TYPE_STOP(cqe_fp_type)))
+ BNX2X_ERR("START/STOP packet while "
+ "disable_tpa type %x\n",
+ CQE_TYPE(cqe_fp_type));
+#endif
+
+ if (CQE_TYPE_START(cqe_fp_type)) {
+ u16 queue = cqe_fp->queue_index;
+ DP(NETIF_MSG_RX_STATUS,
+ "calling tpa_start on queue %d\n",
+ queue);
+
+ bnx2x_tpa_start(fp, queue, skb,
+ bd_cons, bd_prod,
+ cqe_fp);
+
+ /* Set Toeplitz hash for LRO skb */
+ bnx2x_set_skb_rxhash(bp, cqe, skb);
+
+ goto next_rx;
+
+ } else {
+ u16 queue =
+ cqe->end_agg_cqe.queue_index;
+ DP(NETIF_MSG_RX_STATUS,
+ "calling tpa_stop on queue %d\n",
+ queue);
+
+ bnx2x_tpa_stop(bp, fp, queue,
+ &cqe->end_agg_cqe,
+ comp_ring_cons);
+#ifdef BNX2X_STOP_ON_ERROR
+ if (bp->panic)
+ return 0;
+#endif
+
+ bnx2x_update_sge_prod(fp, cqe_fp);
+ goto next_cqe;
+ }
+ }
+ /* non TPA */
+ len = le16_to_cpu(cqe_fp->pkt_len);
+ pad = cqe_fp->placement_offset;
+ dma_sync_single_for_cpu(&bp->pdev->dev,
+ dma_unmap_addr(rx_buf, mapping),
+ pad + RX_COPY_THRESH,
+ DMA_FROM_DEVICE);
+ prefetch(((char *)(skb)) + L1_CACHE_BYTES);
+
+ /* is this an error packet? */
+ if (unlikely(cqe_fp_flags & ETH_RX_ERROR_FALGS)) {
+ DP(NETIF_MSG_RX_ERR,
+ "ERROR flags %x rx packet %u\n",
+ cqe_fp_flags, sw_comp_cons);
+ fp->eth_q_stats.rx_err_discard_pkt++;
+ goto reuse_rx;
+ }
+
+ /* Since we don't have a jumbo ring
+ * copy small packets if mtu > 1500
+ */
+ if ((bp->dev->mtu > ETH_MAX_PACKET_SIZE) &&
+ (len <= RX_COPY_THRESH)) {
+ struct sk_buff *new_skb;
+
+ new_skb = netdev_alloc_skb(bp->dev, len + pad);
+ if (new_skb == NULL) {
+ DP(NETIF_MSG_RX_ERR,
+ "ERROR packet dropped "
+ "because of alloc failure\n");
+ fp->eth_q_stats.rx_skb_alloc_failed++;
+ goto reuse_rx;
+ }
+
+ /* aligned copy */
+ skb_copy_from_linear_data_offset(skb, pad,
+ new_skb->data + pad, len);
+ skb_reserve(new_skb, pad);
+ skb_put(new_skb, len);
+
+ bnx2x_reuse_rx_skb(fp, bd_cons, bd_prod);
+
+ skb = new_skb;
+
+ } else
+ if (likely(bnx2x_alloc_rx_skb(bp, fp, bd_prod) == 0)) {
+ dma_unmap_single(&bp->pdev->dev,
+ dma_unmap_addr(rx_buf, mapping),
+ fp->rx_buf_size,
+ DMA_FROM_DEVICE);
+ skb_reserve(skb, pad);
+ skb_put(skb, len);
+
+ } else {
+ DP(NETIF_MSG_RX_ERR,
+ "ERROR packet dropped because "
+ "of alloc failure\n");
+ fp->eth_q_stats.rx_skb_alloc_failed++;
+reuse_rx:
+ bnx2x_reuse_rx_skb(fp, bd_cons, bd_prod);
+ goto next_rx;
+ }
+
+ skb->protocol = eth_type_trans(skb, bp->dev);
+
+ /* Set Toeplitz hash for a none-LRO skb */
+ bnx2x_set_skb_rxhash(bp, cqe, skb);
+
+ skb_checksum_none_assert(skb);
+
+ if (bp->dev->features & NETIF_F_RXCSUM) {
+
+ if (likely(BNX2X_RX_CSUM_OK(cqe)))
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ else
+ fp->eth_q_stats.hw_csum_err++;
+ }
+ }
+
+ skb_record_rx_queue(skb, fp->index);
+
+ if (le16_to_cpu(cqe_fp->pars_flags.flags) &
+ PARSING_FLAGS_VLAN)
+ __vlan_hwaccel_put_tag(skb,
+ le16_to_cpu(cqe_fp->vlan_tag));
+ napi_gro_receive(&fp->napi, skb);
+
+
+next_rx:
+ rx_buf->skb = NULL;
+
+ bd_cons = NEXT_RX_IDX(bd_cons);
+ bd_prod = NEXT_RX_IDX(bd_prod);
+ bd_prod_fw = NEXT_RX_IDX(bd_prod_fw);
+ rx_pkt++;
+next_cqe:
+ sw_comp_prod = NEXT_RCQ_IDX(sw_comp_prod);
+ sw_comp_cons = NEXT_RCQ_IDX(sw_comp_cons);
+
+ if (rx_pkt == budget)
+ break;
+ } /* while */
+
+ fp->rx_bd_cons = bd_cons;
+ fp->rx_bd_prod = bd_prod_fw;
+ fp->rx_comp_cons = sw_comp_cons;
+ fp->rx_comp_prod = sw_comp_prod;
+
+ /* Update producers */
+ bnx2x_update_rx_prod(bp, fp, bd_prod_fw, sw_comp_prod,
+ fp->rx_sge_prod);
+
+ fp->rx_pkt += rx_pkt;
+ fp->rx_calls++;
+
+ return rx_pkt;
+}
+
+static irqreturn_t bnx2x_msix_fp_int(int irq, void *fp_cookie)
+{
+ struct bnx2x_fastpath *fp = fp_cookie;
+ struct bnx2x *bp = fp->bp;
+ u8 cos;
+
+ DP(BNX2X_MSG_FP, "got an MSI-X interrupt on IDX:SB "
+ "[fp %d fw_sd %d igusb %d]\n",
+ fp->index, fp->fw_sb_id, fp->igu_sb_id);
+ bnx2x_ack_sb(bp, fp->igu_sb_id, USTORM_ID, 0, IGU_INT_DISABLE, 0);
+
+#ifdef BNX2X_STOP_ON_ERROR
+ if (unlikely(bp->panic))
+ return IRQ_HANDLED;
+#endif
+
+ /* Handle Rx and Tx according to MSI-X vector */
+ prefetch(fp->rx_cons_sb);
+
+ for_each_cos_in_tx_queue(fp, cos)
+ prefetch(fp->txdata[cos].tx_cons_sb);
+
+ prefetch(&fp->sb_running_index[SM_RX_ID]);
+ napi_schedule(&bnx2x_fp(bp, fp->index, napi));
+
+ return IRQ_HANDLED;
+}
+
+/* HW Lock for shared dual port PHYs */
+void bnx2x_acquire_phy_lock(struct bnx2x *bp)
+{
+ mutex_lock(&bp->port.phy_mutex);
+
+ if (bp->port.need_hw_lock)
+ bnx2x_acquire_hw_lock(bp, HW_LOCK_RESOURCE_MDIO);
+}
+
+void bnx2x_release_phy_lock(struct bnx2x *bp)
+{
+ if (bp->port.need_hw_lock)
+ bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_MDIO);
+
+ mutex_unlock(&bp->port.phy_mutex);
+}
+
+/* calculates MF speed according to current linespeed and MF configuration */
+u16 bnx2x_get_mf_speed(struct bnx2x *bp)
+{
+ u16 line_speed = bp->link_vars.line_speed;
+ if (IS_MF(bp)) {
+ u16 maxCfg = bnx2x_extract_max_cfg(bp,
+ bp->mf_config[BP_VN(bp)]);
+
+ /* Calculate the current MAX line speed limit for the MF
+ * devices
+ */
+ if (IS_MF_SI(bp))
+ line_speed = (line_speed * maxCfg) / 100;
+ else { /* SD mode */
+ u16 vn_max_rate = maxCfg * 100;
+
+ if (vn_max_rate < line_speed)
+ line_speed = vn_max_rate;
+ }
+ }
+
+ return line_speed;
+}
+
+/**
+ * bnx2x_fill_report_data - fill link report data to report
+ *
+ * @bp: driver handle
+ * @data: link state to update
+ *
+ * It uses a none-atomic bit operations because is called under the mutex.
+ */
+static inline void bnx2x_fill_report_data(struct bnx2x *bp,
+ struct bnx2x_link_report_data *data)
+{
+ u16 line_speed = bnx2x_get_mf_speed(bp);
+
+ memset(data, 0, sizeof(*data));
+
+ /* Fill the report data: efective line speed */
+ data->line_speed = line_speed;
+
+ /* Link is down */
+ if (!bp->link_vars.link_up || (bp->flags & MF_FUNC_DIS))
+ __set_bit(BNX2X_LINK_REPORT_LINK_DOWN,
+ &data->link_report_flags);
+
+ /* Full DUPLEX */
+ if (bp->link_vars.duplex == DUPLEX_FULL)
+ __set_bit(BNX2X_LINK_REPORT_FD, &data->link_report_flags);
+
+ /* Rx Flow Control is ON */
+ if (bp->link_vars.flow_ctrl & BNX2X_FLOW_CTRL_RX)
+ __set_bit(BNX2X_LINK_REPORT_RX_FC_ON, &data->link_report_flags);
+
+ /* Tx Flow Control is ON */
+ if (bp->link_vars.flow_ctrl & BNX2X_FLOW_CTRL_TX)
+ __set_bit(BNX2X_LINK_REPORT_TX_FC_ON, &data->link_report_flags);
+}
+
+/**
+ * bnx2x_link_report - report link status to OS.
+ *
+ * @bp: driver handle
+ *
+ * Calls the __bnx2x_link_report() under the same locking scheme
+ * as a link/PHY state managing code to ensure a consistent link
+ * reporting.
+ */
+
+void bnx2x_link_report(struct bnx2x *bp)
+{
+ bnx2x_acquire_phy_lock(bp);
+ __bnx2x_link_report(bp);
+ bnx2x_release_phy_lock(bp);
+}
+
+/**
+ * __bnx2x_link_report - report link status to OS.
+ *
+ * @bp: driver handle
+ *
+ * None atomic inmlementation.
+ * Should be called under the phy_lock.
+ */
+void __bnx2x_link_report(struct bnx2x *bp)
+{
+ struct bnx2x_link_report_data cur_data;
+
+ /* reread mf_cfg */
+ if (!CHIP_IS_E1(bp))
+ bnx2x_read_mf_cfg(bp);
+
+ /* Read the current link report info */
+ bnx2x_fill_report_data(bp, &cur_data);
+
+ /* Don't report link down or exactly the same link status twice */
+ if (!memcmp(&cur_data, &bp->last_reported_link, sizeof(cur_data)) ||
+ (test_bit(BNX2X_LINK_REPORT_LINK_DOWN,
+ &bp->last_reported_link.link_report_flags) &&
+ test_bit(BNX2X_LINK_REPORT_LINK_DOWN,
+ &cur_data.link_report_flags)))
+ return;
+
+ bp->link_cnt++;
+
+ /* We are going to report a new link parameters now -
+ * remember the current data for the next time.
+ */
+ memcpy(&bp->last_reported_link, &cur_data, sizeof(cur_data));
+
+ if (test_bit(BNX2X_LINK_REPORT_LINK_DOWN,
+ &cur_data.link_report_flags)) {
+ netif_carrier_off(bp->dev);
+ netdev_err(bp->dev, "NIC Link is Down\n");
+ return;
+ } else {
+ const char *duplex;
+ const char *flow;
+
+ netif_carrier_on(bp->dev);
+
+ if (test_and_clear_bit(BNX2X_LINK_REPORT_FD,
+ &cur_data.link_report_flags))
+ duplex = "full";
+ else
+ duplex = "half";
+
+ /* Handle the FC at the end so that only these flags would be
+ * possibly set. This way we may easily check if there is no FC
+ * enabled.
+ */
+ if (cur_data.link_report_flags) {
+ if (test_bit(BNX2X_LINK_REPORT_RX_FC_ON,
+ &cur_data.link_report_flags)) {
+ if (test_bit(BNX2X_LINK_REPORT_TX_FC_ON,
+ &cur_data.link_report_flags))
+ flow = "ON - receive & transmit";
+ else
+ flow = "ON - receive";
+ } else {
+ flow = "ON - transmit";
+ }
+ } else {
+ flow = "none";
+ }
+ netdev_info(bp->dev, "NIC Link is Up, %d Mbps %s duplex, Flow control: %s\n",
+ cur_data.line_speed, duplex, flow);
+ }
+}
+
+void bnx2x_init_rx_rings(struct bnx2x *bp)
+{
+ int func = BP_FUNC(bp);
+ int max_agg_queues = CHIP_IS_E1(bp) ? ETH_MAX_AGGREGATION_QUEUES_E1 :
+ ETH_MAX_AGGREGATION_QUEUES_E1H_E2;
+ u16 ring_prod;
+ int i, j;
+
+ /* Allocate TPA resources */
+ for_each_rx_queue(bp, j) {
+ struct bnx2x_fastpath *fp = &bp->fp[j];
+
+ DP(NETIF_MSG_IFUP,
+ "mtu %d rx_buf_size %d\n", bp->dev->mtu, fp->rx_buf_size);
+
+ if (!fp->disable_tpa) {
+ /* Fill the per-aggregtion pool */
+ for (i = 0; i < max_agg_queues; i++) {
+ struct bnx2x_agg_info *tpa_info =
+ &fp->tpa_info[i];
+ struct sw_rx_bd *first_buf =
+ &tpa_info->first_buf;
+
+ first_buf->skb = netdev_alloc_skb(bp->dev,
+ fp->rx_buf_size);
+ if (!first_buf->skb) {
+ BNX2X_ERR("Failed to allocate TPA "
+ "skb pool for queue[%d] - "
+ "disabling TPA on this "
+ "queue!\n", j);
+ bnx2x_free_tpa_pool(bp, fp, i);
+ fp->disable_tpa = 1;
+ break;
+ }
+ dma_unmap_addr_set(first_buf, mapping, 0);
+ tpa_info->tpa_state = BNX2X_TPA_STOP;
+ }
+
+ /* "next page" elements initialization */
+ bnx2x_set_next_page_sgl(fp);
+
+ /* set SGEs bit mask */
+ bnx2x_init_sge_ring_bit_mask(fp);
+
+ /* Allocate SGEs and initialize the ring elements */
+ for (i = 0, ring_prod = 0;
+ i < MAX_RX_SGE_CNT*NUM_RX_SGE_PAGES; i++) {
+
+ if (bnx2x_alloc_rx_sge(bp, fp, ring_prod) < 0) {
+ BNX2X_ERR("was only able to allocate "
+ "%d rx sges\n", i);
+ BNX2X_ERR("disabling TPA for "
+ "queue[%d]\n", j);
+ /* Cleanup already allocated elements */
+ bnx2x_free_rx_sge_range(bp, fp,
+ ring_prod);
+ bnx2x_free_tpa_pool(bp, fp,
+ max_agg_queues);
+ fp->disable_tpa = 1;
+ ring_prod = 0;
+ break;
+ }
+ ring_prod = NEXT_SGE_IDX(ring_prod);
+ }
+
+ fp->rx_sge_prod = ring_prod;
+ }
+ }
+
+ for_each_rx_queue(bp, j) {
+ struct bnx2x_fastpath *fp = &bp->fp[j];
+
+ fp->rx_bd_cons = 0;
+
+ /* Activate BD ring */
+ /* Warning!
+ * this will generate an interrupt (to the TSTORM)
+ * must only be done after chip is initialized
+ */
+ bnx2x_update_rx_prod(bp, fp, fp->rx_bd_prod, fp->rx_comp_prod,
+ fp->rx_sge_prod);
+
+ if (j != 0)
+ continue;
+
+ if (CHIP_IS_E1(bp)) {
+ REG_WR(bp, BAR_USTRORM_INTMEM +
+ USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(func),
+ U64_LO(fp->rx_comp_mapping));
+ REG_WR(bp, BAR_USTRORM_INTMEM +
+ USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(func) + 4,
+ U64_HI(fp->rx_comp_mapping));
+ }
+ }
+}
+
+static void bnx2x_free_tx_skbs(struct bnx2x *bp)
+{
+ int i;
+ u8 cos;
+
+ for_each_tx_queue(bp, i) {
+ struct bnx2x_fastpath *fp = &bp->fp[i];
+ for_each_cos_in_tx_queue(fp, cos) {
+ struct bnx2x_fp_txdata *txdata = &fp->txdata[cos];
+
+ u16 bd_cons = txdata->tx_bd_cons;
+ u16 sw_prod = txdata->tx_pkt_prod;
+ u16 sw_cons = txdata->tx_pkt_cons;
+
+ while (sw_cons != sw_prod) {
+ bd_cons = bnx2x_free_tx_pkt(bp, txdata,
+ TX_BD(sw_cons));
+ sw_cons++;
+ }
+ }
+ }
+}
+
+static void bnx2x_free_rx_bds(struct bnx2x_fastpath *fp)
+{
+ struct bnx2x *bp = fp->bp;
+ int i;
+
+ /* ring wasn't allocated */
+ if (fp->rx_buf_ring == NULL)
+ return;
+
+ for (i = 0; i < NUM_RX_BD; i++) {
+ struct sw_rx_bd *rx_buf = &fp->rx_buf_ring[i];
+ struct sk_buff *skb = rx_buf->skb;
+
+ if (skb == NULL)
+ continue;
+ dma_unmap_single(&bp->pdev->dev,
+ dma_unmap_addr(rx_buf, mapping),
+ fp->rx_buf_size, DMA_FROM_DEVICE);
+
+ rx_buf->skb = NULL;
+ dev_kfree_skb(skb);
+ }
+}
+
+static void bnx2x_free_rx_skbs(struct bnx2x *bp)
+{
+ int j;
+
+ for_each_rx_queue(bp, j) {
+ struct bnx2x_fastpath *fp = &bp->fp[j];
+
+ bnx2x_free_rx_bds(fp);
+
+ if (!fp->disable_tpa)
+ bnx2x_free_tpa_pool(bp, fp, CHIP_IS_E1(bp) ?
+ ETH_MAX_AGGREGATION_QUEUES_E1 :
+ ETH_MAX_AGGREGATION_QUEUES_E1H_E2);
+ }
+}
+
+void bnx2x_free_skbs(struct bnx2x *bp)
+{
+ bnx2x_free_tx_skbs(bp);
+ bnx2x_free_rx_skbs(bp);
+}
+
+void bnx2x_update_max_mf_config(struct bnx2x *bp, u32 value)
+{
+ /* load old values */
+ u32 mf_cfg = bp->mf_config[BP_VN(bp)];
+
+ if (value != bnx2x_extract_max_cfg(bp, mf_cfg)) {
+ /* leave all but MAX value */
+ mf_cfg &= ~FUNC_MF_CFG_MAX_BW_MASK;
+
+ /* set new MAX value */
+ mf_cfg |= (value << FUNC_MF_CFG_MAX_BW_SHIFT)
+ & FUNC_MF_CFG_MAX_BW_MASK;
+
+ bnx2x_fw_command(bp, DRV_MSG_CODE_SET_MF_BW, mf_cfg);
+ }
+}
+
+/**
+ * bnx2x_free_msix_irqs - free previously requested MSI-X IRQ vectors
+ *
+ * @bp: driver handle
+ * @nvecs: number of vectors to be released
+ */
+static void bnx2x_free_msix_irqs(struct bnx2x *bp, int nvecs)
+{
+ int i, offset = 0;
+
+ if (nvecs == offset)
+ return;
+ free_irq(bp->msix_table[offset].vector, bp->dev);
+ DP(NETIF_MSG_IFDOWN, "released sp irq (%d)\n",
+ bp->msix_table[offset].vector);
+ offset++;
+#ifdef BCM_CNIC
+ if (nvecs == offset)
+ return;
+ offset++;
+#endif
+
+ for_each_eth_queue(bp, i) {
+ if (nvecs == offset)
+ return;
+ DP(NETIF_MSG_IFDOWN, "about to release fp #%d->%d "
+ "irq\n", i, bp->msix_table[offset].vector);
+
+ free_irq(bp->msix_table[offset++].vector, &bp->fp[i]);
+ }
+}
+
+void bnx2x_free_irq(struct bnx2x *bp)
+{
+ if (bp->flags & USING_MSIX_FLAG)
+ bnx2x_free_msix_irqs(bp, BNX2X_NUM_ETH_QUEUES(bp) +
+ CNIC_PRESENT + 1);
+ else if (bp->flags & USING_MSI_FLAG)
+ free_irq(bp->pdev->irq, bp->dev);
+ else
+ free_irq(bp->pdev->irq, bp->dev);
+}
+
+int bnx2x_enable_msix(struct bnx2x *bp)
+{
+ int msix_vec = 0, i, rc, req_cnt;
+
+ bp->msix_table[msix_vec].entry = msix_vec;
+ DP(NETIF_MSG_IFUP, "msix_table[0].entry = %d (slowpath)\n",
+ bp->msix_table[0].entry);
+ msix_vec++;
+
+#ifdef BCM_CNIC
+ bp->msix_table[msix_vec].entry = msix_vec;
+ DP(NETIF_MSG_IFUP, "msix_table[%d].entry = %d (CNIC)\n",
+ bp->msix_table[msix_vec].entry, bp->msix_table[msix_vec].entry);
+ msix_vec++;
+#endif
+ /* We need separate vectors for ETH queues only (not FCoE) */
+ for_each_eth_queue(bp, i) {
+ bp->msix_table[msix_vec].entry = msix_vec;
+ DP(NETIF_MSG_IFUP, "msix_table[%d].entry = %d "
+ "(fastpath #%u)\n", msix_vec, msix_vec, i);
+ msix_vec++;
+ }
+
+ req_cnt = BNX2X_NUM_ETH_QUEUES(bp) + CNIC_PRESENT + 1;
+
+ rc = pci_enable_msix(bp->pdev, &bp->msix_table[0], req_cnt);
+
+ /*
+ * reconfigure number of tx/rx queues according to available
+ * MSI-X vectors
+ */
+ if (rc >= BNX2X_MIN_MSIX_VEC_CNT) {
+ /* how less vectors we will have? */
+ int diff = req_cnt - rc;
+
+ DP(NETIF_MSG_IFUP,
+ "Trying to use less MSI-X vectors: %d\n", rc);
+
+ rc = pci_enable_msix(bp->pdev, &bp->msix_table[0], rc);
+
+ if (rc) {
+ DP(NETIF_MSG_IFUP,
+ "MSI-X is not attainable rc %d\n", rc);
+ return rc;
+ }
+ /*
+ * decrease number of queues by number of unallocated entries
+ */
+ bp->num_queues -= diff;
+
+ DP(NETIF_MSG_IFUP, "New queue configuration set: %d\n",
+ bp->num_queues);
+ } else if (rc) {
+ /* fall to INTx if not enough memory */
+ if (rc == -ENOMEM)
+ bp->flags |= DISABLE_MSI_FLAG;
+ DP(NETIF_MSG_IFUP, "MSI-X is not attainable rc %d\n", rc);
+ return rc;
+ }
+
+ bp->flags |= USING_MSIX_FLAG;
+
+ return 0;
+}
+
+static int bnx2x_req_msix_irqs(struct bnx2x *bp)
+{
+ int i, rc, offset = 0;
+
+ rc = request_irq(bp->msix_table[offset++].vector,
+ bnx2x_msix_sp_int, 0,
+ bp->dev->name, bp->dev);
+ if (rc) {
+ BNX2X_ERR("request sp irq failed\n");
+ return -EBUSY;
+ }
+
+#ifdef BCM_CNIC
+ offset++;
+#endif
+ for_each_eth_queue(bp, i) {
+ struct bnx2x_fastpath *fp = &bp->fp[i];
+ snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
+ bp->dev->name, i);
+
+ rc = request_irq(bp->msix_table[offset].vector,
+ bnx2x_msix_fp_int, 0, fp->name, fp);
+ if (rc) {
+ BNX2X_ERR("request fp #%d irq (%d) failed rc %d\n", i,
+ bp->msix_table[offset].vector, rc);
+ bnx2x_free_msix_irqs(bp, offset);
+ return -EBUSY;
+ }
+
+ offset++;
+ }
+
+ i = BNX2X_NUM_ETH_QUEUES(bp);
+ offset = 1 + CNIC_PRESENT;
+ netdev_info(bp->dev, "using MSI-X IRQs: sp %d fp[%d] %d"
+ " ... fp[%d] %d\n",
+ bp->msix_table[0].vector,
+ 0, bp->msix_table[offset].vector,
+ i - 1, bp->msix_table[offset + i - 1].vector);
+
+ return 0;
+}
+
+int bnx2x_enable_msi(struct bnx2x *bp)
+{
+ int rc;
+
+ rc = pci_enable_msi(bp->pdev);
+ if (rc) {
+ DP(NETIF_MSG_IFUP, "MSI is not attainable\n");
+ return -1;
+ }
+ bp->flags |= USING_MSI_FLAG;
+
+ return 0;
+}
+
+static int bnx2x_req_irq(struct bnx2x *bp)
+{
+ unsigned long flags;
+ int rc;
+
+ if (bp->flags & USING_MSI_FLAG)
+ flags = 0;
+ else
+ flags = IRQF_SHARED;
+
+ rc = request_irq(bp->pdev->irq, bnx2x_interrupt, flags,
+ bp->dev->name, bp->dev);
+ return rc;
+}
+
+static inline int bnx2x_setup_irqs(struct bnx2x *bp)
+{
+ int rc = 0;
+ if (bp->flags & USING_MSIX_FLAG) {
+ rc = bnx2x_req_msix_irqs(bp);
+ if (rc)
+ return rc;
+ } else {
+ bnx2x_ack_int(bp);
+ rc = bnx2x_req_irq(bp);
+ if (rc) {
+ BNX2X_ERR("IRQ request failed rc %d, aborting\n", rc);
+ return rc;
+ }
+ if (bp->flags & USING_MSI_FLAG) {
+ bp->dev->irq = bp->pdev->irq;
+ netdev_info(bp->dev, "using MSI IRQ %d\n",
+ bp->pdev->irq);
+ }
+ }
+
+ return 0;
+}
+
+static inline void bnx2x_napi_enable(struct bnx2x *bp)
+{
+ int i;
+
+ for_each_rx_queue(bp, i)
+ napi_enable(&bnx2x_fp(bp, i, napi));
+}
+
+static inline void bnx2x_napi_disable(struct bnx2x *bp)
+{
+ int i;
+
+ for_each_rx_queue(bp, i)
+ napi_disable(&bnx2x_fp(bp, i, napi));
+}
+
+void bnx2x_netif_start(struct bnx2x *bp)
+{
+ if (netif_running(bp->dev)) {
+ bnx2x_napi_enable(bp);
+ bnx2x_int_enable(bp);
+ if (bp->state == BNX2X_STATE_OPEN)
+ netif_tx_wake_all_queues(bp->dev);
+ }
+}
+
+void bnx2x_netif_stop(struct bnx2x *bp, int disable_hw)
+{
+ bnx2x_int_disable_sync(bp, disable_hw);
+ bnx2x_napi_disable(bp);
+}
+
+u16 bnx2x_select_queue(struct net_device *dev, struct sk_buff *skb)
+{
+ struct bnx2x *bp = netdev_priv(dev);
++
+#ifdef BCM_CNIC
- /* Select a none-FCoE queue: if FCoE is enabled, exclude FCoE L2 ring
- */
++ if (!NO_FCOE(bp)) {
+ struct ethhdr *hdr = (struct ethhdr *)skb->data;
+ u16 ether_type = ntohs(hdr->h_proto);
+
+ /* Skip VLAN tag if present */
+ if (ether_type == ETH_P_8021Q) {
+ struct vlan_ethhdr *vhdr =
+ (struct vlan_ethhdr *)skb->data;
+
+ ether_type = ntohs(vhdr->h_vlan_encapsulated_proto);
+ }
+
+ /* If ethertype is FCoE or FIP - use FCoE ring */
+ if ((ether_type == ETH_P_FCOE) || (ether_type == ETH_P_FIP))
+ return bnx2x_fcoe_tx(bp, txq_index);
+ }
+#endif
++ /* select a non-FCoE queue */
+ return __skb_tx_hash(dev, skb, BNX2X_NUM_ETH_QUEUES(bp));
+}
+
+void bnx2x_set_num_queues(struct bnx2x *bp)
+{
+ switch (bp->multi_mode) {
+ case ETH_RSS_MODE_DISABLED:
+ bp->num_queues = 1;
+ break;
+ case ETH_RSS_MODE_REGULAR:
+ bp->num_queues = bnx2x_calc_num_queues(bp);
+ break;
+
+ default:
+ bp->num_queues = 1;
+ break;
+ }
+
+ /* Add special queues */
+ bp->num_queues += NON_ETH_CONTEXT_USE;
+}
+
++/**
++ * bnx2x_set_real_num_queues - configure netdev->real_num_[tx,rx]_queues
++ *
++ * @bp: Driver handle
++ *
++ * We currently support for at most 16 Tx queues for each CoS thus we will
++ * allocate a multiple of 16 for ETH L2 rings according to the value of the
++ * bp->max_cos.
++ *
++ * If there is an FCoE L2 queue the appropriate Tx queue will have the next
++ * index after all ETH L2 indices.
++ *
++ * If the actual number of Tx queues (for each CoS) is less than 16 then there
++ * will be the holes at the end of each group of 16 ETh L2 indices (0..15,
++ * 16..31,...) with indicies that are not coupled with any real Tx queue.
++ *
++ * The proper configuration of skb->queue_mapping is handled by
++ * bnx2x_select_queue() and __skb_tx_hash().
++ *
++ * bnx2x_setup_tc() takes care of the proper TC mappings so that __skb_tx_hash()
++ * will return a proper Tx index if TC is enabled (netdev->num_tc > 0).
++ */
+static inline int bnx2x_set_real_num_queues(struct bnx2x *bp)
+{
+ int rc, tx, rx;
+
+ tx = MAX_TXQS_PER_COS * bp->max_cos;
+ rx = BNX2X_NUM_ETH_QUEUES(bp);
+
+/* account for fcoe queue */
+#ifdef BCM_CNIC
+ if (!NO_FCOE(bp)) {
+ rx += FCOE_PRESENT;
+ tx += FCOE_PRESENT;
+ }
+#endif
+
+ rc = netif_set_real_num_tx_queues(bp->dev, tx);
+ if (rc) {
+ BNX2X_ERR("Failed to set real number of Tx queues: %d\n", rc);
+ return rc;
+ }
+ rc = netif_set_real_num_rx_queues(bp->dev, rx);
+ if (rc) {
+ BNX2X_ERR("Failed to set real number of Rx queues: %d\n", rc);
+ return rc;
+ }
+
+ DP(NETIF_MSG_DRV, "Setting real num queues to (tx, rx) (%d, %d)\n",
+ tx, rx);
+
+ return rc;
+}
+
+static inline void bnx2x_set_rx_buf_size(struct bnx2x *bp)
+{
+ int i;
+
+ for_each_queue(bp, i) {
+ struct bnx2x_fastpath *fp = &bp->fp[i];
+
+ /* Always use a mini-jumbo MTU for the FCoE L2 ring */
+ if (IS_FCOE_IDX(i))
+ /*
+ * Although there are no IP frames expected to arrive to
+ * this ring we still want to add an
+ * IP_HEADER_ALIGNMENT_PADDING to prevent a buffer
+ * overrun attack.
+ */
+ fp->rx_buf_size =
+ BNX2X_FCOE_MINI_JUMBO_MTU + ETH_OVREHEAD +
+ BNX2X_FW_RX_ALIGN + IP_HEADER_ALIGNMENT_PADDING;
+ else
+ fp->rx_buf_size =
+ bp->dev->mtu + ETH_OVREHEAD +
+ BNX2X_FW_RX_ALIGN + IP_HEADER_ALIGNMENT_PADDING;
+ }
+}
+
+static inline int bnx2x_init_rss_pf(struct bnx2x *bp)
+{
+ int i;
+ u8 ind_table[T_ETH_INDIRECTION_TABLE_SIZE] = {0};
+ u8 num_eth_queues = BNX2X_NUM_ETH_QUEUES(bp);
+
+ /*
+ * Prepare the inital contents fo the indirection table if RSS is
+ * enabled
+ */
+ if (bp->multi_mode != ETH_RSS_MODE_DISABLED) {
+ for (i = 0; i < sizeof(ind_table); i++)
+ ind_table[i] =
+ bp->fp->cl_id + (i % num_eth_queues);
+ }
+
+ /*
+ * For 57710 and 57711 SEARCHER configuration (rss_keys) is
+ * per-port, so if explicit configuration is needed , do it only
+ * for a PMF.
+ *
+ * For 57712 and newer on the other hand it's a per-function
+ * configuration.
+ */
+ return bnx2x_config_rss_pf(bp, ind_table,
+ bp->port.pmf || !CHIP_IS_E1x(bp));
+}
+
+int bnx2x_config_rss_pf(struct bnx2x *bp, u8 *ind_table, bool config_hash)
+{
+ struct bnx2x_config_rss_params params = {0};
+ int i;
+
+ /* Although RSS is meaningless when there is a single HW queue we
+ * still need it enabled in order to have HW Rx hash generated.
+ *
+ * if (!is_eth_multi(bp))
+ * bp->multi_mode = ETH_RSS_MODE_DISABLED;
+ */
+
+ params.rss_obj = &bp->rss_conf_obj;
+
+ __set_bit(RAMROD_COMP_WAIT, ¶ms.ramrod_flags);
+
+ /* RSS mode */
+ switch (bp->multi_mode) {
+ case ETH_RSS_MODE_DISABLED:
+ __set_bit(BNX2X_RSS_MODE_DISABLED, ¶ms.rss_flags);
+ break;
+ case ETH_RSS_MODE_REGULAR:
+ __set_bit(BNX2X_RSS_MODE_REGULAR, ¶ms.rss_flags);
+ break;
+ case ETH_RSS_MODE_VLAN_PRI:
+ __set_bit(BNX2X_RSS_MODE_VLAN_PRI, ¶ms.rss_flags);
+ break;
+ case ETH_RSS_MODE_E1HOV_PRI:
+ __set_bit(BNX2X_RSS_MODE_E1HOV_PRI, ¶ms.rss_flags);
+ break;
+ case ETH_RSS_MODE_IP_DSCP:
+ __set_bit(BNX2X_RSS_MODE_IP_DSCP, ¶ms.rss_flags);
+ break;
+ default:
+ BNX2X_ERR("Unknown multi_mode: %d\n", bp->multi_mode);
+ return -EINVAL;
+ }
+
+ /* If RSS is enabled */
+ if (bp->multi_mode != ETH_RSS_MODE_DISABLED) {
+ /* RSS configuration */
+ __set_bit(BNX2X_RSS_IPV4, ¶ms.rss_flags);
+ __set_bit(BNX2X_RSS_IPV4_TCP, ¶ms.rss_flags);
+ __set_bit(BNX2X_RSS_IPV6, ¶ms.rss_flags);
+ __set_bit(BNX2X_RSS_IPV6_TCP, ¶ms.rss_flags);
+
+ /* Hash bits */
+ params.rss_result_mask = MULTI_MASK;
+
+ memcpy(params.ind_table, ind_table, sizeof(params.ind_table));
+
+ if (config_hash) {
+ /* RSS keys */
+ for (i = 0; i < sizeof(params.rss_key) / 4; i++)
+ params.rss_key[i] = random32();
+
+ __set_bit(BNX2X_RSS_SET_SRCH, ¶ms.rss_flags);
+ }
+ }
+
+ return bnx2x_config_rss(bp, ¶ms);
+}
+
+static inline int bnx2x_init_hw(struct bnx2x *bp, u32 load_code)
+{
+ struct bnx2x_func_state_params func_params = {0};
+
+ /* Prepare parameters for function state transitions */
+ __set_bit(RAMROD_COMP_WAIT, &func_params.ramrod_flags);
+
+ func_params.f_obj = &bp->func_obj;
+ func_params.cmd = BNX2X_F_CMD_HW_INIT;
+
+ func_params.params.hw_init.load_phase = load_code;
+
+ return bnx2x_func_state_change(bp, &func_params);
+}
+
+/*
+ * Cleans the object that have internal lists without sending
+ * ramrods. Should be run when interrutps are disabled.
+ */
+static void bnx2x_squeeze_objects(struct bnx2x *bp)
+{
+ int rc;
+ unsigned long ramrod_flags = 0, vlan_mac_flags = 0;
+ struct bnx2x_mcast_ramrod_params rparam = {0};
+ struct bnx2x_vlan_mac_obj *mac_obj = &bp->fp->mac_obj;
+
+ /***************** Cleanup MACs' object first *************************/
+
+ /* Wait for completion of requested */
+ __set_bit(RAMROD_COMP_WAIT, &ramrod_flags);
+ /* Perform a dry cleanup */
+ __set_bit(RAMROD_DRV_CLR_ONLY, &ramrod_flags);
+
+ /* Clean ETH primary MAC */
+ __set_bit(BNX2X_ETH_MAC, &vlan_mac_flags);
+ rc = mac_obj->delete_all(bp, &bp->fp->mac_obj, &vlan_mac_flags,
+ &ramrod_flags);
+ if (rc != 0)
+ BNX2X_ERR("Failed to clean ETH MACs: %d\n", rc);
+
+ /* Cleanup UC list */
+ vlan_mac_flags = 0;
+ __set_bit(BNX2X_UC_LIST_MAC, &vlan_mac_flags);
+ rc = mac_obj->delete_all(bp, mac_obj, &vlan_mac_flags,
+ &ramrod_flags);
+ if (rc != 0)
+ BNX2X_ERR("Failed to clean UC list MACs: %d\n", rc);
+
+ /***************** Now clean mcast object *****************************/
+ rparam.mcast_obj = &bp->mcast_obj;
+ __set_bit(RAMROD_DRV_CLR_ONLY, &rparam.ramrod_flags);
+
+ /* Add a DEL command... */
+ rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_DEL);
+ if (rc < 0)
+ BNX2X_ERR("Failed to add a new DEL command to a multi-cast "
+ "object: %d\n", rc);
+
+ /* ...and wait until all pending commands are cleared */
+ rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_CONT);
+ while (rc != 0) {
+ if (rc < 0) {
+ BNX2X_ERR("Failed to clean multi-cast object: %d\n",
+ rc);
+ return;
+ }
+
+ rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_CONT);
+ }
+}
+
+#ifndef BNX2X_STOP_ON_ERROR
+#define LOAD_ERROR_EXIT(bp, label) \
+ do { \
+ (bp)->state = BNX2X_STATE_ERROR; \
+ goto label; \
+ } while (0)
+#else
+#define LOAD_ERROR_EXIT(bp, label) \
+ do { \
+ (bp)->state = BNX2X_STATE_ERROR; \
+ (bp)->panic = 1; \
+ return -EBUSY; \
+ } while (0)
+#endif
+
+/* must be called with rtnl_lock */
+int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
+{
+ int port = BP_PORT(bp);
+ u32 load_code;
+ int i, rc;
+
+#ifdef BNX2X_STOP_ON_ERROR
+ if (unlikely(bp->panic))
+ return -EPERM;
+#endif
+
+ bp->state = BNX2X_STATE_OPENING_WAIT4_LOAD;
+
+ /* Set the initial link reported state to link down */
+ bnx2x_acquire_phy_lock(bp);
+ memset(&bp->last_reported_link, 0, sizeof(bp->last_reported_link));
+ __set_bit(BNX2X_LINK_REPORT_LINK_DOWN,
+ &bp->last_reported_link.link_report_flags);
+ bnx2x_release_phy_lock(bp);
+
+ /* must be called before memory allocation and HW init */
+ bnx2x_ilt_set_info(bp);
+
+ /*
+ * Zero fastpath structures preserving invariants like napi, which are
+ * allocated only once, fp index, max_cos, bp pointer.
+ * Also set fp->disable_tpa.
+ */
+ for_each_queue(bp, i)
+ bnx2x_bz_fp(bp, i);
+
+
+ /* Set the receive queues buffer size */
+ bnx2x_set_rx_buf_size(bp);
+
+ if (bnx2x_alloc_mem(bp))
+ return -ENOMEM;
+
+ /* As long as bnx2x_alloc_mem() may possibly update
+ * bp->num_queues, bnx2x_set_real_num_queues() should always
+ * come after it.
+ */
+ rc = bnx2x_set_real_num_queues(bp);
+ if (rc) {
+ BNX2X_ERR("Unable to set real_num_queues\n");
+ LOAD_ERROR_EXIT(bp, load_error0);
+ }
+
+ /* configure multi cos mappings in kernel.
+ * this configuration may be overriden by a multi class queue discipline
+ * or by a dcbx negotiation result.
+ */
+ bnx2x_setup_tc(bp->dev, bp->max_cos);
+
+ bnx2x_napi_enable(bp);
+
+ /* Send LOAD_REQUEST command to MCP
+ * Returns the type of LOAD command:
+ * if it is the first port to be initialized
+ * common blocks should be initialized, otherwise - not
+ */
+ if (!BP_NOMCP(bp)) {
+ load_code = bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_REQ, 0);
+ if (!load_code) {
+ BNX2X_ERR("MCP response failure, aborting\n");
+ rc = -EBUSY;
+ LOAD_ERROR_EXIT(bp, load_error1);
+ }
+ if (load_code == FW_MSG_CODE_DRV_LOAD_REFUSED) {
+ rc = -EBUSY; /* other port in diagnostic mode */
+ LOAD_ERROR_EXIT(bp, load_error1);
+ }
+
+ } else {
+ int path = BP_PATH(bp);
+
+ DP(NETIF_MSG_IFUP, "NO MCP - load counts[%d] %d, %d, %d\n",
+ path, load_count[path][0], load_count[path][1],
+ load_count[path][2]);
+ load_count[path][0]++;
+ load_count[path][1 + port]++;
+ DP(NETIF_MSG_IFUP, "NO MCP - new load counts[%d] %d, %d, %d\n",
+ path, load_count[path][0], load_count[path][1],
+ load_count[path][2]);
+ if (load_count[path][0] == 1)
+ load_code = FW_MSG_CODE_DRV_LOAD_COMMON;
+ else if (load_count[path][1 + port] == 1)
+ load_code = FW_MSG_CODE_DRV_LOAD_PORT;
+ else
+ load_code = FW_MSG_CODE_DRV_LOAD_FUNCTION;
+ }
+
+ if ((load_code == FW_MSG_CODE_DRV_LOAD_COMMON) ||
+ (load_code == FW_MSG_CODE_DRV_LOAD_COMMON_CHIP) ||
+ (load_code == FW_MSG_CODE_DRV_LOAD_PORT)) {
+ bp->port.pmf = 1;
+ /*
+ * We need the barrier to ensure the ordering between the
+ * writing to bp->port.pmf here and reading it from the
+ * bnx2x_periodic_task().
+ */
+ smp_mb();
+ queue_delayed_work(bnx2x_wq, &bp->period_task, 0);
+ } else
+ bp->port.pmf = 0;
+
+ DP(NETIF_MSG_LINK, "pmf %d\n", bp->port.pmf);
+
+ /* Init Function state controlling object */
+ bnx2x__init_func_obj(bp);
+
+ /* Initialize HW */
+ rc = bnx2x_init_hw(bp, load_code);
+ if (rc) {
+ BNX2X_ERR("HW init failed, aborting\n");
+ bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
+ LOAD_ERROR_EXIT(bp, load_error2);
+ }
+
+ /* Connect to IRQs */
+ rc = bnx2x_setup_irqs(bp);
+ if (rc) {
+ bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
+ LOAD_ERROR_EXIT(bp, load_error2);
+ }
+
+ /* Setup NIC internals and enable interrupts */
+ bnx2x_nic_init(bp, load_code);
+
+ /* Init per-function objects */
+ bnx2x_init_bp_objs(bp);
+
+ if (((load_code == FW_MSG_CODE_DRV_LOAD_COMMON) ||
+ (load_code == FW_MSG_CODE_DRV_LOAD_COMMON_CHIP)) &&
+ (bp->common.shmem2_base)) {
+ if (SHMEM2_HAS(bp, dcc_support))
+ SHMEM2_WR(bp, dcc_support,
+ (SHMEM_DCC_SUPPORT_DISABLE_ENABLE_PF_TLV |
+ SHMEM_DCC_SUPPORT_BANDWIDTH_ALLOCATION_TLV));
+ }
+
+ bp->state = BNX2X_STATE_OPENING_WAIT4_PORT;
+ rc = bnx2x_func_start(bp);
+ if (rc) {
+ BNX2X_ERR("Function start failed!\n");
+ bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
+ LOAD_ERROR_EXIT(bp, load_error3);
+ }
+
+ /* Send LOAD_DONE command to MCP */
+ if (!BP_NOMCP(bp)) {
+ load_code = bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
+ if (!load_code) {
+ BNX2X_ERR("MCP response failure, aborting\n");
+ rc = -EBUSY;
+ LOAD_ERROR_EXIT(bp, load_error3);
+ }
+ }
+
+ rc = bnx2x_setup_leading(bp);
+ if (rc) {
+ BNX2X_ERR("Setup leading failed!\n");
+ LOAD_ERROR_EXIT(bp, load_error3);
+ }
+
+#ifdef BCM_CNIC
+ /* Enable Timer scan */
+ REG_WR(bp, TM_REG_EN_LINEAR0_TIMER + port*4, 1);
+#endif
+
+ for_each_nondefault_queue(bp, i) {
+ rc = bnx2x_setup_queue(bp, &bp->fp[i], 0);
+ if (rc)
+ LOAD_ERROR_EXIT(bp, load_error4);
+ }
+
+ rc = bnx2x_init_rss_pf(bp);
+ if (rc)
+ LOAD_ERROR_EXIT(bp, load_error4);
+
+ /* Now when Clients are configured we are ready to work */
+ bp->state = BNX2X_STATE_OPEN;
+
+ /* Configure a ucast MAC */
+ rc = bnx2x_set_eth_mac(bp, true);
+ if (rc)
+ LOAD_ERROR_EXIT(bp, load_error4);
+
+ if (bp->pending_max) {
+ bnx2x_update_max_mf_config(bp, bp->pending_max);
+ bp->pending_max = 0;
+ }
+
+ if (bp->port.pmf)
+ bnx2x_initial_phy_init(bp, load_mode);
+
+ /* Start fast path */
+
+ /* Initialize Rx filter. */
+ netif_addr_lock_bh(bp->dev);
+ bnx2x_set_rx_mode(bp->dev);
+ netif_addr_unlock_bh(bp->dev);
+
+ /* Start the Tx */
+ switch (load_mode) {
+ case LOAD_NORMAL:
+ /* Tx queue should be only reenabled */
+ netif_tx_wake_all_queues(bp->dev);
+ break;
+
+ case LOAD_OPEN:
+ netif_tx_start_all_queues(bp->dev);
+ smp_mb__after_clear_bit();
+ break;
+
+ case LOAD_DIAG:
+ bp->state = BNX2X_STATE_DIAG;
+ break;
+
+ default:
+ break;
+ }
+
+ if (!bp->port.pmf)
+ bnx2x__link_status_update(bp);
+
+ /* start the timer */
+ mod_timer(&bp->timer, jiffies + bp->current_interval);
+
+#ifdef BCM_CNIC
+ bnx2x_setup_cnic_irq_info(bp);
+ if (bp->state == BNX2X_STATE_OPEN)
+ bnx2x_cnic_notify(bp, CNIC_CTL_START_CMD);
+#endif
+ bnx2x_inc_load_cnt(bp);
+
+ /* Wait for all pending SP commands to complete */
+ if (!bnx2x_wait_sp_comp(bp, ~0x0UL)) {
+ BNX2X_ERR("Timeout waiting for SP elements to complete\n");
+ bnx2x_nic_unload(bp, UNLOAD_CLOSE);
+ return -EBUSY;
+ }
+
+ bnx2x_dcbx_init(bp);
+ return 0;
+
+#ifndef BNX2X_STOP_ON_ERROR
+load_error4:
+#ifdef BCM_CNIC
+ /* Disable Timer scan */
+ REG_WR(bp, TM_REG_EN_LINEAR0_TIMER + port*4, 0);
+#endif
+load_error3:
+ bnx2x_int_disable_sync(bp, 1);
+
+ /* Clean queueable objects */
+ bnx2x_squeeze_objects(bp);
+
+ /* Free SKBs, SGEs, TPA pool and driver internals */
+ bnx2x_free_skbs(bp);
+ for_each_rx_queue(bp, i)
+ bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE);
+
+ /* Release IRQs */
+ bnx2x_free_irq(bp);
+load_error2:
+ if (!BP_NOMCP(bp)) {
+ bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_REQ_WOL_MCP, 0);
+ bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_DONE, 0);
+ }
+
+ bp->port.pmf = 0;
+load_error1:
+ bnx2x_napi_disable(bp);
+load_error0:
+ bnx2x_free_mem(bp);
+
+ return rc;
+#endif /* ! BNX2X_STOP_ON_ERROR */
+}
+
+/* must be called with rtnl_lock */
+int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode)
+{
+ int i;
+ bool global = false;
+
+ if ((bp->state == BNX2X_STATE_CLOSED) ||
+ (bp->state == BNX2X_STATE_ERROR)) {
+ /* We can get here if the driver has been unloaded
+ * during parity error recovery and is either waiting for a
+ * leader to complete or for other functions to unload and
+ * then ifdown has been issued. In this case we want to
+ * unload and let other functions to complete a recovery
+ * process.
+ */
+ bp->recovery_state = BNX2X_RECOVERY_DONE;
+ bp->is_leader = 0;
+ bnx2x_release_leader_lock(bp);
+ smp_mb();
+
+ DP(NETIF_MSG_HW, "Releasing a leadership...\n");
+
+ return -EINVAL;
+ }
+
+ /*
+ * It's important to set the bp->state to the value different from
+ * BNX2X_STATE_OPEN and only then stop the Tx. Otherwise bnx2x_tx_int()
+ * may restart the Tx from the NAPI context (see bnx2x_tx_int()).
+ */
+ bp->state = BNX2X_STATE_CLOSING_WAIT4_HALT;
+ smp_mb();
+
+ /* Stop Tx */
+ bnx2x_tx_disable(bp);
+
+#ifdef BCM_CNIC
+ bnx2x_cnic_notify(bp, CNIC_CTL_STOP_CMD);
+#endif
+
+ bp->rx_mode = BNX2X_RX_MODE_NONE;
+
+ del_timer_sync(&bp->timer);
+
+ /* Set ALWAYS_ALIVE bit in shmem */
+ bp->fw_drv_pulse_wr_seq |= DRV_PULSE_ALWAYS_ALIVE;
+
+ bnx2x_drv_pulse(bp);
+
+ bnx2x_stats_handle(bp, STATS_EVENT_STOP);
+
+ /* Cleanup the chip if needed */
+ if (unload_mode != UNLOAD_RECOVERY)
+ bnx2x_chip_cleanup(bp, unload_mode);
+ else {
+ /* Send the UNLOAD_REQUEST to the MCP */
+ bnx2x_send_unload_req(bp, unload_mode);
+
+ /*
+ * Prevent transactions to host from the functions on the
+ * engine that doesn't reset global blocks in case of global
+ * attention once gloabl blocks are reset and gates are opened
+ * (the engine which leader will perform the recovery
+ * last).
+ */
+ if (!CHIP_IS_E1x(bp))
+ bnx2x_pf_disable(bp);
+
+ /* Disable HW interrupts, NAPI */
+ bnx2x_netif_stop(bp, 1);
+
+ /* Release IRQs */
+ bnx2x_free_irq(bp);
+
+ /* Report UNLOAD_DONE to MCP */
+ bnx2x_send_unload_done(bp);
+ }
+
+ /*
+ * At this stage no more interrupts will arrive so we may safly clean
+ * the queueable objects here in case they failed to get cleaned so far.
+ */
+ bnx2x_squeeze_objects(bp);
+
+ /* There should be no more pending SP commands at this stage */
+ bp->sp_state = 0;
+
+ bp->port.pmf = 0;
+
+ /* Free SKBs, SGEs, TPA pool and driver internals */
+ bnx2x_free_skbs(bp);
+ for_each_rx_queue(bp, i)
+ bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE);
+
+ bnx2x_free_mem(bp);
+
+ bp->state = BNX2X_STATE_CLOSED;
+
+ /* Check if there are pending parity attentions. If there are - set
+ * RECOVERY_IN_PROGRESS.
+ */
+ if (bnx2x_chk_parity_attn(bp, &global, false)) {
+ bnx2x_set_reset_in_progress(bp);
+
+ /* Set RESET_IS_GLOBAL if needed */
+ if (global)
+ bnx2x_set_reset_global(bp);
+ }
+
+
+ /* The last driver must disable a "close the gate" if there is no
+ * parity attention or "process kill" pending.
+ */
+ if (!bnx2x_dec_load_cnt(bp) && bnx2x_reset_is_done(bp, BP_PATH(bp)))
+ bnx2x_disable_close_the_gate(bp);
+
+ return 0;
+}
+
+int bnx2x_set_power_state(struct bnx2x *bp, pci_power_t state)
+{
+ u16 pmcsr;
+
+ /* If there is no power capability, silently succeed */
+ if (!bp->pm_cap) {
+ DP(NETIF_MSG_HW, "No power capability. Breaking.\n");
+ return 0;
+ }
+
+ pci_read_config_word(bp->pdev, bp->pm_cap + PCI_PM_CTRL, &pmcsr);
+
+ switch (state) {
+ case PCI_D0:
+ pci_write_config_word(bp->pdev, bp->pm_cap + PCI_PM_CTRL,
+ ((pmcsr & ~PCI_PM_CTRL_STATE_MASK) |
+ PCI_PM_CTRL_PME_STATUS));
+
+ if (pmcsr & PCI_PM_CTRL_STATE_MASK)
+ /* delay required during transition out of D3hot */
+ msleep(20);
+ break;
+
+ case PCI_D3hot:
+ /* If there are other clients above don't
+ shut down the power */
+ if (atomic_read(&bp->pdev->enable_cnt) != 1)
+ return 0;
+ /* Don't shut down the power for emulation and FPGA */
+ if (CHIP_REV_IS_SLOW(bp))
+ return 0;
+
+ pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
+ pmcsr |= 3;
+
+ if (bp->wol)
+ pmcsr |= PCI_PM_CTRL_PME_ENABLE;
+
+ pci_write_config_word(bp->pdev, bp->pm_cap + PCI_PM_CTRL,
+ pmcsr);
+
+ /* No more memory access after this point until
+ * device is brought back to D0.
+ */
+ break;
+
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/*
+ * net_device service functions
+ */
+int bnx2x_poll(struct napi_struct *napi, int budget)
+{
+ int work_done = 0;
+ u8 cos;
+ struct bnx2x_fastpath *fp = container_of(napi, struct bnx2x_fastpath,
+ napi);
+ struct bnx2x *bp = fp->bp;
+
+ while (1) {
+#ifdef BNX2X_STOP_ON_ERROR
+ if (unlikely(bp->panic)) {
+ napi_complete(napi);
+ return 0;
+ }
+#endif
+
+ for_each_cos_in_tx_queue(fp, cos)
+ if (bnx2x_tx_queue_has_work(&fp->txdata[cos]))
+ bnx2x_tx_int(bp, &fp->txdata[cos]);
+
+
+ if (bnx2x_has_rx_work(fp)) {
+ work_done += bnx2x_rx_int(fp, budget - work_done);
+
+ /* must not complete if we consumed full budget */
+ if (work_done >= budget)
+ break;
+ }
+
+ /* Fall out from the NAPI loop if needed */
+ if (!(bnx2x_has_rx_work(fp) || bnx2x_has_tx_work(fp))) {
+#ifdef BCM_CNIC
+ /* No need to update SB for FCoE L2 ring as long as
+ * it's connected to the default SB and the SB
+ * has been updated when NAPI was scheduled.
+ */
+ if (IS_FCOE_FP(fp)) {
+ napi_complete(napi);
+ break;
+ }
+#endif
+
+ bnx2x_update_fpsb_idx(fp);
+ /* bnx2x_has_rx_work() reads the status block,
+ * thus we need to ensure that status block indices
+ * have been actually read (bnx2x_update_fpsb_idx)
+ * prior to this check (bnx2x_has_rx_work) so that
+ * we won't write the "newer" value of the status block
+ * to IGU (if there was a DMA right after
+ * bnx2x_has_rx_work and if there is no rmb, the memory
+ * reading (bnx2x_update_fpsb_idx) may be postponed
+ * to right before bnx2x_ack_sb). In this case there
+ * will never be another interrupt until there is
+ * another update of the status block, while there
+ * is still unhandled work.
+ */
+ rmb();
+
+ if (!(bnx2x_has_rx_work(fp) || bnx2x_has_tx_work(fp))) {
+ napi_complete(napi);
+ /* Re-enable interrupts */
+ DP(NETIF_MSG_HW,
+ "Update index to %d\n", fp->fp_hc_idx);
+ bnx2x_ack_sb(bp, fp->igu_sb_id, USTORM_ID,
+ le16_to_cpu(fp->fp_hc_idx),
+ IGU_INT_ENABLE, 1);
+ break;
+ }
+ }
+ }
+
+ return work_done;
+}
+
+/* we split the first BD into headers and data BDs
+ * to ease the pain of our fellow microcode engineers
+ * we use one mapping for both BDs
+ * So far this has only been observed to happen
+ * in Other Operating Systems(TM)
+ */
+static noinline u16 bnx2x_tx_split(struct bnx2x *bp,
+ struct bnx2x_fp_txdata *txdata,
+ struct sw_tx_bd *tx_buf,
+ struct eth_tx_start_bd **tx_bd, u16 hlen,
+ u16 bd_prod, int nbd)
+{
+ struct eth_tx_start_bd *h_tx_bd = *tx_bd;
+ struct eth_tx_bd *d_tx_bd;
+ dma_addr_t mapping;
+ int old_len = le16_to_cpu(h_tx_bd->nbytes);
+
+ /* first fix first BD */
+ h_tx_bd->nbd = cpu_to_le16(nbd);
+ h_tx_bd->nbytes = cpu_to_le16(hlen);
+
+ DP(NETIF_MSG_TX_QUEUED, "TSO split header size is %d "
+ "(%x:%x) nbd %d\n", h_tx_bd->nbytes, h_tx_bd->addr_hi,
+ h_tx_bd->addr_lo, h_tx_bd->nbd);
+
+ /* now get a new data BD
+ * (after the pbd) and fill it */
+ bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
+ d_tx_bd = &txdata->tx_desc_ring[bd_prod].reg_bd;
+
+ mapping = HILO_U64(le32_to_cpu(h_tx_bd->addr_hi),
+ le32_to_cpu(h_tx_bd->addr_lo)) + hlen;
+
+ d_tx_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
+ d_tx_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
+ d_tx_bd->nbytes = cpu_to_le16(old_len - hlen);
+
+ /* this marks the BD as one that has no individual mapping */
+ tx_buf->flags |= BNX2X_TSO_SPLIT_BD;
+
+ DP(NETIF_MSG_TX_QUEUED,
+ "TSO split data size is %d (%x:%x)\n",
+ d_tx_bd->nbytes, d_tx_bd->addr_hi, d_tx_bd->addr_lo);
+
+ /* update tx_bd */
+ *tx_bd = (struct eth_tx_start_bd *)d_tx_bd;
+
+ return bd_prod;
+}
+
+static inline u16 bnx2x_csum_fix(unsigned char *t_header, u16 csum, s8 fix)
+{
+ if (fix > 0)
+ csum = (u16) ~csum_fold(csum_sub(csum,
+ csum_partial(t_header - fix, fix, 0)));
+
+ else if (fix < 0)
+ csum = (u16) ~csum_fold(csum_add(csum,
+ csum_partial(t_header, -fix, 0)));
+
+ return swab16(csum);
+}
+
+static inline u32 bnx2x_xmit_type(struct bnx2x *bp, struct sk_buff *skb)
+{
+ u32 rc;
+
+ if (skb->ip_summed != CHECKSUM_PARTIAL)
+ rc = XMIT_PLAIN;
+
+ else {
+ if (vlan_get_protocol(skb) == htons(ETH_P_IPV6)) {
+ rc = XMIT_CSUM_V6;
+ if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
+ rc |= XMIT_CSUM_TCP;
+
+ } else {
+ rc = XMIT_CSUM_V4;
+ if (ip_hdr(skb)->protocol == IPPROTO_TCP)
+ rc |= XMIT_CSUM_TCP;
+ }
+ }
+
+ if (skb_is_gso_v6(skb))
+ rc |= XMIT_GSO_V6 | XMIT_CSUM_TCP | XMIT_CSUM_V6;
+ else if (skb_is_gso(skb))
+ rc |= XMIT_GSO_V4 | XMIT_CSUM_V4 | XMIT_CSUM_TCP;
+
+ return rc;
+}
+
+#if (MAX_SKB_FRAGS >= MAX_FETCH_BD - 3)
+/* check if packet requires linearization (packet is too fragmented)
+ no need to check fragmentation if page size > 8K (there will be no
+ violation to FW restrictions) */
+static int bnx2x_pkt_req_lin(struct bnx2x *bp, struct sk_buff *skb,
+ u32 xmit_type)
+{
+ int to_copy = 0;
+ int hlen = 0;
+ int first_bd_sz = 0;
+
+ /* 3 = 1 (for linear data BD) + 2 (for PBD and last BD) */
+ if (skb_shinfo(skb)->nr_frags >= (MAX_FETCH_BD - 3)) {
+
+ if (xmit_type & XMIT_GSO) {
+ unsigned short lso_mss = skb_shinfo(skb)->gso_size;
+ /* Check if LSO packet needs to be copied:
+ 3 = 1 (for headers BD) + 2 (for PBD and last BD) */
+ int wnd_size = MAX_FETCH_BD - 3;
+ /* Number of windows to check */
+ int num_wnds = skb_shinfo(skb)->nr_frags - wnd_size;
+ int wnd_idx = 0;
+ int frag_idx = 0;
+ u32 wnd_sum = 0;
+
+ /* Headers length */
+ hlen = (int)(skb_transport_header(skb) - skb->data) +
+ tcp_hdrlen(skb);
+
+ /* Amount of data (w/o headers) on linear part of SKB*/
+ first_bd_sz = skb_headlen(skb) - hlen;
+
+ wnd_sum = first_bd_sz;
+
+ /* Calculate the first sum - it's special */
+ for (frag_idx = 0; frag_idx < wnd_size - 1; frag_idx++)
+ wnd_sum +=
+ skb_shinfo(skb)->frags[frag_idx].size;
+
+ /* If there was data on linear skb data - check it */
+ if (first_bd_sz > 0) {
+ if (unlikely(wnd_sum < lso_mss)) {
+ to_copy = 1;
+ goto exit_lbl;
+ }
+
+ wnd_sum -= first_bd_sz;
+ }
+
+ /* Others are easier: run through the frag list and
+ check all windows */
+ for (wnd_idx = 0; wnd_idx <= num_wnds; wnd_idx++) {
+ wnd_sum +=
+ skb_shinfo(skb)->frags[wnd_idx + wnd_size - 1].size;
+
+ if (unlikely(wnd_sum < lso_mss)) {
+ to_copy = 1;
+ break;
+ }
+ wnd_sum -=
+ skb_shinfo(skb)->frags[wnd_idx].size;
+ }
+ } else {
+ /* in non-LSO too fragmented packet should always
+ be linearized */
+ to_copy = 1;
+ }
+ }
+
+exit_lbl:
+ if (unlikely(to_copy))
+ DP(NETIF_MSG_TX_QUEUED,
+ "Linearization IS REQUIRED for %s packet. "
+ "num_frags %d hlen %d first_bd_sz %d\n",
+ (xmit_type & XMIT_GSO) ? "LSO" : "non-LSO",
+ skb_shinfo(skb)->nr_frags, hlen, first_bd_sz);
+
+ return to_copy;
+}
+#endif
+
+static inline void bnx2x_set_pbd_gso_e2(struct sk_buff *skb, u32 *parsing_data,
+ u32 xmit_type)
+{
+ *parsing_data |= (skb_shinfo(skb)->gso_size <<
+ ETH_TX_PARSE_BD_E2_LSO_MSS_SHIFT) &
+ ETH_TX_PARSE_BD_E2_LSO_MSS;
+ if ((xmit_type & XMIT_GSO_V6) &&
+ (ipv6_hdr(skb)->nexthdr == NEXTHDR_IPV6))
+ *parsing_data |= ETH_TX_PARSE_BD_E2_IPV6_WITH_EXT_HDR;
+}
+
+/**
+ * bnx2x_set_pbd_gso - update PBD in GSO case.
+ *
+ * @skb: packet skb
+ * @pbd: parse BD
+ * @xmit_type: xmit flags
+ */
+static inline void bnx2x_set_pbd_gso(struct sk_buff *skb,
+ struct eth_tx_parse_bd_e1x *pbd,
+ u32 xmit_type)
+{
+ pbd->lso_mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
+ pbd->tcp_send_seq = swab32(tcp_hdr(skb)->seq);
+ pbd->tcp_flags = pbd_tcp_flags(skb);
+
+ if (xmit_type & XMIT_GSO_V4) {
+ pbd->ip_id = swab16(ip_hdr(skb)->id);
+ pbd->tcp_pseudo_csum =
+ swab16(~csum_tcpudp_magic(ip_hdr(skb)->saddr,
+ ip_hdr(skb)->daddr,
+ 0, IPPROTO_TCP, 0));
+
+ } else
+ pbd->tcp_pseudo_csum =
+ swab16(~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
+ &ipv6_hdr(skb)->daddr,
+ 0, IPPROTO_TCP, 0));
+
+ pbd->global_data |= ETH_TX_PARSE_BD_E1X_PSEUDO_CS_WITHOUT_LEN;
+}
+
+/**
+ * bnx2x_set_pbd_csum_e2 - update PBD with checksum and return header length
+ *
+ * @bp: driver handle
+ * @skb: packet skb
+ * @parsing_data: data to be updated
+ * @xmit_type: xmit flags
+ *
+ * 57712 related
+ */
+static inline u8 bnx2x_set_pbd_csum_e2(struct bnx2x *bp, struct sk_buff *skb,
+ u32 *parsing_data, u32 xmit_type)
+{
+ *parsing_data |=
+ ((((u8 *)skb_transport_header(skb) - skb->data) >> 1) <<
+ ETH_TX_PARSE_BD_E2_TCP_HDR_START_OFFSET_W_SHIFT) &
+ ETH_TX_PARSE_BD_E2_TCP_HDR_START_OFFSET_W;
+
+ if (xmit_type & XMIT_CSUM_TCP) {
+ *parsing_data |= ((tcp_hdrlen(skb) / 4) <<
+ ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW_SHIFT) &
+ ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW;
+
+ return skb_transport_header(skb) + tcp_hdrlen(skb) - skb->data;
+ } else
+ /* We support checksum offload for TCP and UDP only.
+ * No need to pass the UDP header length - it's a constant.
+ */
+ return skb_transport_header(skb) +
+ sizeof(struct udphdr) - skb->data;
+}
+
+static inline void bnx2x_set_sbd_csum(struct bnx2x *bp, struct sk_buff *skb,
+ struct eth_tx_start_bd *tx_start_bd, u32 xmit_type)
+{
+ tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_L4_CSUM;
+
+ if (xmit_type & XMIT_CSUM_V4)
+ tx_start_bd->bd_flags.as_bitfield |=
+ ETH_TX_BD_FLAGS_IP_CSUM;
+ else
+ tx_start_bd->bd_flags.as_bitfield |=
+ ETH_TX_BD_FLAGS_IPV6;
+
+ if (!(xmit_type & XMIT_CSUM_TCP))
+ tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_IS_UDP;
+}
+
+/**
+ * bnx2x_set_pbd_csum - update PBD with checksum and return header length
+ *
+ * @bp: driver handle
+ * @skb: packet skb
+ * @pbd: parse BD to be updated
+ * @xmit_type: xmit flags
+ */
+static inline u8 bnx2x_set_pbd_csum(struct bnx2x *bp, struct sk_buff *skb,
+ struct eth_tx_parse_bd_e1x *pbd,
+ u32 xmit_type)
+{
+ u8 hlen = (skb_network_header(skb) - skb->data) >> 1;
+
+ /* for now NS flag is not used in Linux */
+ pbd->global_data =
+ (hlen | ((skb->protocol == cpu_to_be16(ETH_P_8021Q)) <<
+ ETH_TX_PARSE_BD_E1X_LLC_SNAP_EN_SHIFT));
+
+ pbd->ip_hlen_w = (skb_transport_header(skb) -
+ skb_network_header(skb)) >> 1;
+
+ hlen += pbd->ip_hlen_w;
+
+ /* We support checksum offload for TCP and UDP only */
+ if (xmit_type & XMIT_CSUM_TCP)
+ hlen += tcp_hdrlen(skb) / 2;
+ else
+ hlen += sizeof(struct udphdr) / 2;
+
+ pbd->total_hlen_w = cpu_to_le16(hlen);
+ hlen = hlen*2;
+
+ if (xmit_type & XMIT_CSUM_TCP) {
+ pbd->tcp_pseudo_csum = swab16(tcp_hdr(skb)->check);
+
+ } else {
+ s8 fix = SKB_CS_OFF(skb); /* signed! */
+
+ DP(NETIF_MSG_TX_QUEUED,
+ "hlen %d fix %d csum before fix %x\n",
+ le16_to_cpu(pbd->total_hlen_w), fix, SKB_CS(skb));
+
+ /* HW bug: fixup the CSUM */
+ pbd->tcp_pseudo_csum =
+ bnx2x_csum_fix(skb_transport_header(skb),
+ SKB_CS(skb), fix);
+
+ DP(NETIF_MSG_TX_QUEUED, "csum after fix %x\n",
+ pbd->tcp_pseudo_csum);
+ }
+
+ return hlen;
+}
+
+/* called with netif_tx_lock
+ * bnx2x_tx_int() runs without netif_tx_lock unless it needs to call
+ * netif_wake_queue()
+ */
+netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct bnx2x *bp = netdev_priv(dev);
+
+ struct bnx2x_fastpath *fp;
+ struct netdev_queue *txq;
+ struct bnx2x_fp_txdata *txdata;
+ struct sw_tx_bd *tx_buf;
+ struct eth_tx_start_bd *tx_start_bd, *first_bd;
+ struct eth_tx_bd *tx_data_bd, *total_pkt_bd = NULL;
+ struct eth_tx_parse_bd_e1x *pbd_e1x = NULL;
+ struct eth_tx_parse_bd_e2 *pbd_e2 = NULL;
+ u32 pbd_e2_parsing_data = 0;
+ u16 pkt_prod, bd_prod;
+ int nbd, txq_index, fp_index, txdata_index;
+ dma_addr_t mapping;
+ u32 xmit_type = bnx2x_xmit_type(bp, skb);
+ int i;
+ u8 hlen = 0;
+ __le16 pkt_size = 0;
+ struct ethhdr *eth;
+ u8 mac_type = UNICAST_ADDRESS;
+
+#ifdef BNX2X_STOP_ON_ERROR
+ if (unlikely(bp->panic))
+ return NETDEV_TX_BUSY;
+#endif
+
+ txq_index = skb_get_queue_mapping(skb);
+ txq = netdev_get_tx_queue(dev, txq_index);
+
+ BUG_ON(txq_index >= MAX_ETH_TXQ_IDX(bp) + FCOE_PRESENT);
+
+ /* decode the fastpath index and the cos index from the txq */
+ fp_index = TXQ_TO_FP(txq_index);
+ txdata_index = TXQ_TO_COS(txq_index);
+
+#ifdef BCM_CNIC
+ /*
+ * Override the above for the FCoE queue:
+ * - FCoE fp entry is right after the ETH entries.
+ * - FCoE L2 queue uses bp->txdata[0] only.
+ */
+ if (unlikely(!NO_FCOE(bp) && (txq_index ==
+ bnx2x_fcoe_tx(bp, txq_index)))) {
+ fp_index = FCOE_IDX;
+ txdata_index = 0;
+ }
+#endif
+
+ /* enable this debug print to view the transmission queue being used
+ DP(BNX2X_MSG_FP, "indices: txq %d, fp %d, txdata %d\n",
+ txq_index, fp_index, txdata_index); */
+
+ /* locate the fastpath and the txdata */
+ fp = &bp->fp[fp_index];
+ txdata = &fp->txdata[txdata_index];
+
+ /* enable this debug print to view the tranmission details
+ DP(BNX2X_MSG_FP,"transmitting packet cid %d fp index %d txdata_index %d"
+ " tx_data ptr %p fp pointer %p\n",
+ txdata->cid, fp_index, txdata_index, txdata, fp); */
+
+ if (unlikely(bnx2x_tx_avail(bp, txdata) <
+ (skb_shinfo(skb)->nr_frags + 3))) {
+ fp->eth_q_stats.driver_xoff++;
+ netif_tx_stop_queue(txq);
+ BNX2X_ERR("BUG! Tx ring full when queue awake!\n");
+ return NETDEV_TX_BUSY;
+ }
+
+ DP(NETIF_MSG_TX_QUEUED, "queue[%d]: SKB: summed %x protocol %x "
+ "protocol(%x,%x) gso type %x xmit_type %x\n",
+ txq_index, skb->ip_summed, skb->protocol, ipv6_hdr(skb)->nexthdr,
+ ip_hdr(skb)->protocol, skb_shinfo(skb)->gso_type, xmit_type);
+
+ eth = (struct ethhdr *)skb->data;
+
+ /* set flag according to packet type (UNICAST_ADDRESS is default)*/
+ if (unlikely(is_multicast_ether_addr(eth->h_dest))) {
+ if (is_broadcast_ether_addr(eth->h_dest))
+ mac_type = BROADCAST_ADDRESS;
+ else
+ mac_type = MULTICAST_ADDRESS;
+ }
+
+#if (MAX_SKB_FRAGS >= MAX_FETCH_BD - 3)
+ /* First, check if we need to linearize the skb (due to FW
+ restrictions). No need to check fragmentation if page size > 8K
+ (there will be no violation to FW restrictions) */
+ if (bnx2x_pkt_req_lin(bp, skb, xmit_type)) {
+ /* Statistics of linearization */
+ bp->lin_cnt++;
+ if (skb_linearize(skb) != 0) {
+ DP(NETIF_MSG_TX_QUEUED, "SKB linearization failed - "
+ "silently dropping this SKB\n");
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+ }
+ }
+#endif
+ /* Map skb linear data for DMA */
+ mapping = dma_map_single(&bp->pdev->dev, skb->data,
+ skb_headlen(skb), DMA_TO_DEVICE);
+ if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
+ DP(NETIF_MSG_TX_QUEUED, "SKB mapping failed - "
+ "silently dropping this SKB\n");
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+ }
+ /*
+ Please read carefully. First we use one BD which we mark as start,
+ then we have a parsing info BD (used for TSO or xsum),
+ and only then we have the rest of the TSO BDs.
+ (don't forget to mark the last one as last,
+ and to unmap only AFTER you write to the BD ...)
+ And above all, all pdb sizes are in words - NOT DWORDS!
+ */
+
+ /* get current pkt produced now - advance it just before sending packet
+ * since mapping of pages may fail and cause packet to be dropped
+ */
+ pkt_prod = txdata->tx_pkt_prod;
+ bd_prod = TX_BD(txdata->tx_bd_prod);
+
+ /* get a tx_buf and first BD
+ * tx_start_bd may be changed during SPLIT,
+ * but first_bd will always stay first
+ */
+ tx_buf = &txdata->tx_buf_ring[TX_BD(pkt_prod)];
+ tx_start_bd = &txdata->tx_desc_ring[bd_prod].start_bd;
+ first_bd = tx_start_bd;
+
+ tx_start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
+ SET_FLAG(tx_start_bd->general_data, ETH_TX_START_BD_ETH_ADDR_TYPE,
+ mac_type);
+
+ /* header nbd */
+ SET_FLAG(tx_start_bd->general_data, ETH_TX_START_BD_HDR_NBDS, 1);
+
+ /* remember the first BD of the packet */
+ tx_buf->first_bd = txdata->tx_bd_prod;
+ tx_buf->skb = skb;
+ tx_buf->flags = 0;
+
+ DP(NETIF_MSG_TX_QUEUED,
+ "sending pkt %u @%p next_idx %u bd %u @%p\n",
+ pkt_prod, tx_buf, txdata->tx_pkt_prod, bd_prod, tx_start_bd);
+
+ if (vlan_tx_tag_present(skb)) {
+ tx_start_bd->vlan_or_ethertype =
+ cpu_to_le16(vlan_tx_tag_get(skb));
+ tx_start_bd->bd_flags.as_bitfield |=
+ (X_ETH_OUTBAND_VLAN << ETH_TX_BD_FLAGS_VLAN_MODE_SHIFT);
+ } else
+ tx_start_bd->vlan_or_ethertype = cpu_to_le16(pkt_prod);
+
+ /* turn on parsing and get a BD */
+ bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
+
+ if (xmit_type & XMIT_CSUM)
+ bnx2x_set_sbd_csum(bp, skb, tx_start_bd, xmit_type);
+
+ if (!CHIP_IS_E1x(bp)) {
+ pbd_e2 = &txdata->tx_desc_ring[bd_prod].parse_bd_e2;
+ memset(pbd_e2, 0, sizeof(struct eth_tx_parse_bd_e2));
+ /* Set PBD in checksum offload case */
+ if (xmit_type & XMIT_CSUM)
+ hlen = bnx2x_set_pbd_csum_e2(bp, skb,
+ &pbd_e2_parsing_data,
+ xmit_type);
+ if (IS_MF_SI(bp)) {
+ /*
+ * fill in the MAC addresses in the PBD - for local
+ * switching
+ */
+ bnx2x_set_fw_mac_addr(&pbd_e2->src_mac_addr_hi,
+ &pbd_e2->src_mac_addr_mid,
+ &pbd_e2->src_mac_addr_lo,
+ eth->h_source);
+ bnx2x_set_fw_mac_addr(&pbd_e2->dst_mac_addr_hi,
+ &pbd_e2->dst_mac_addr_mid,
+ &pbd_e2->dst_mac_addr_lo,
+ eth->h_dest);
+ }
+ } else {
+ pbd_e1x = &txdata->tx_desc_ring[bd_prod].parse_bd_e1x;
+ memset(pbd_e1x, 0, sizeof(struct eth_tx_parse_bd_e1x));
+ /* Set PBD in checksum offload case */
+ if (xmit_type & XMIT_CSUM)
+ hlen = bnx2x_set_pbd_csum(bp, skb, pbd_e1x, xmit_type);
+
+ }
+
+ /* Setup the data pointer of the first BD of the packet */
+ tx_start_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
+ tx_start_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
+ nbd = 2; /* start_bd + pbd + frags (updated when pages are mapped) */
+ tx_start_bd->nbytes = cpu_to_le16(skb_headlen(skb));
+ pkt_size = tx_start_bd->nbytes;
+
+ DP(NETIF_MSG_TX_QUEUED, "first bd @%p addr (%x:%x) nbd %d"
+ " nbytes %d flags %x vlan %x\n",
+ tx_start_bd, tx_start_bd->addr_hi, tx_start_bd->addr_lo,
+ le16_to_cpu(tx_start_bd->nbd), le16_to_cpu(tx_start_bd->nbytes),
+ tx_start_bd->bd_flags.as_bitfield,
+ le16_to_cpu(tx_start_bd->vlan_or_ethertype));
+
+ if (xmit_type & XMIT_GSO) {
+
+ DP(NETIF_MSG_TX_QUEUED,
+ "TSO packet len %d hlen %d total len %d tso size %d\n",
+ skb->len, hlen, skb_headlen(skb),
+ skb_shinfo(skb)->gso_size);
+
+ tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_SW_LSO;
+
+ if (unlikely(skb_headlen(skb) > hlen))
+ bd_prod = bnx2x_tx_split(bp, txdata, tx_buf,
+ &tx_start_bd, hlen,
+ bd_prod, ++nbd);
+ if (!CHIP_IS_E1x(bp))
+ bnx2x_set_pbd_gso_e2(skb, &pbd_e2_parsing_data,
+ xmit_type);
+ else
+ bnx2x_set_pbd_gso(skb, pbd_e1x, xmit_type);
+ }
+
+ /* Set the PBD's parsing_data field if not zero
+ * (for the chips newer than 57711).
+ */
+ if (pbd_e2_parsing_data)
+ pbd_e2->parsing_data = cpu_to_le32(pbd_e2_parsing_data);
+
+ tx_data_bd = (struct eth_tx_bd *)tx_start_bd;
+
+ /* Handle fragmented skb */
+ for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+ skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
+
+ mapping = dma_map_page(&bp->pdev->dev, frag->page,
+ frag->page_offset, frag->size,
+ DMA_TO_DEVICE);
+ if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
+
+ DP(NETIF_MSG_TX_QUEUED, "Unable to map page - "
+ "dropping packet...\n");
+
+ /* we need unmap all buffers already mapped
+ * for this SKB;
+ * first_bd->nbd need to be properly updated
+ * before call to bnx2x_free_tx_pkt
+ */
+ first_bd->nbd = cpu_to_le16(nbd);
+ bnx2x_free_tx_pkt(bp, txdata,
+ TX_BD(txdata->tx_pkt_prod));
+ return NETDEV_TX_OK;
+ }
+
+ bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
+ tx_data_bd = &txdata->tx_desc_ring[bd_prod].reg_bd;
+ if (total_pkt_bd == NULL)
+ total_pkt_bd = &txdata->tx_desc_ring[bd_prod].reg_bd;
+
+ tx_data_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
+ tx_data_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
+ tx_data_bd->nbytes = cpu_to_le16(frag->size);
+ le16_add_cpu(&pkt_size, frag->size);
+ nbd++;
+
+ DP(NETIF_MSG_TX_QUEUED,
+ "frag %d bd @%p addr (%x:%x) nbytes %d\n",
+ i, tx_data_bd, tx_data_bd->addr_hi, tx_data_bd->addr_lo,
+ le16_to_cpu(tx_data_bd->nbytes));
+ }
+
+ DP(NETIF_MSG_TX_QUEUED, "last bd @%p\n", tx_data_bd);
+
+ /* update with actual num BDs */
+ first_bd->nbd = cpu_to_le16(nbd);
+
+ bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
+
+ /* now send a tx doorbell, counting the next BD
+ * if the packet contains or ends with it
+ */
+ if (TX_BD_POFF(bd_prod) < nbd)
+ nbd++;
+
+ /* total_pkt_bytes should be set on the first data BD if
+ * it's not an LSO packet and there is more than one
+ * data BD. In this case pkt_size is limited by an MTU value.
+ * However we prefer to set it for an LSO packet (while we don't
+ * have to) in order to save some CPU cycles in a none-LSO
+ * case, when we much more care about them.
+ */
+ if (total_pkt_bd != NULL)
+ total_pkt_bd->total_pkt_bytes = pkt_size;
+
+ if (pbd_e1x)
+ DP(NETIF_MSG_TX_QUEUED,
+ "PBD (E1X) @%p ip_data %x ip_hlen %u ip_id %u lso_mss %u"
+ " tcp_flags %x xsum %x seq %u hlen %u\n",
+ pbd_e1x, pbd_e1x->global_data, pbd_e1x->ip_hlen_w,
+ pbd_e1x->ip_id, pbd_e1x->lso_mss, pbd_e1x->tcp_flags,
+ pbd_e1x->tcp_pseudo_csum, pbd_e1x->tcp_send_seq,
+ le16_to_cpu(pbd_e1x->total_hlen_w));
+ if (pbd_e2)
+ DP(NETIF_MSG_TX_QUEUED,
+ "PBD (E2) @%p dst %x %x %x src %x %x %x parsing_data %x\n",
+ pbd_e2, pbd_e2->dst_mac_addr_hi, pbd_e2->dst_mac_addr_mid,
+ pbd_e2->dst_mac_addr_lo, pbd_e2->src_mac_addr_hi,
+ pbd_e2->src_mac_addr_mid, pbd_e2->src_mac_addr_lo,
+ pbd_e2->parsing_data);
+ DP(NETIF_MSG_TX_QUEUED, "doorbell: nbd %d bd %u\n", nbd, bd_prod);
+
+ txdata->tx_pkt_prod++;
+ /*
+ * Make sure that the BD data is updated before updating the producer
+ * since FW might read the BD right after the producer is updated.
+ * This is only applicable for weak-ordered memory model archs such
+ * as IA-64. The following barrier is also mandatory since FW will
+ * assumes packets must have BDs.
+ */
+ wmb();
+
+ txdata->tx_db.data.prod += nbd;
+ barrier();
+
+ DOORBELL(bp, txdata->cid, txdata->tx_db.raw);
+
+ mmiowb();
+
+ txdata->tx_bd_prod += nbd;
+
+ if (unlikely(bnx2x_tx_avail(bp, txdata) < MAX_SKB_FRAGS + 3)) {
+ netif_tx_stop_queue(txq);
+
+ /* paired memory barrier is in bnx2x_tx_int(), we have to keep
+ * ordering of set_bit() in netif_tx_stop_queue() and read of
+ * fp->bd_tx_cons */
+ smp_mb();
+
+ fp->eth_q_stats.driver_xoff++;
+ if (bnx2x_tx_avail(bp, txdata) >= MAX_SKB_FRAGS + 3)
+ netif_tx_wake_queue(txq);
+ }
+ txdata->tx_pkt++;
+
+ return NETDEV_TX_OK;
+}
+
+/**
+ * bnx2x_setup_tc - routine to configure net_device for multi tc
+ *
+ * @netdev: net device to configure
+ * @tc: number of traffic classes to enable
+ *
+ * callback connected to the ndo_setup_tc function pointer
+ */
+int bnx2x_setup_tc(struct net_device *dev, u8 num_tc)
+{
+ int cos, prio, count, offset;
+ struct bnx2x *bp = netdev_priv(dev);
+
+ /* setup tc must be called under rtnl lock */
+ ASSERT_RTNL();
+
+ /* no traffic classes requested. aborting */
+ if (!num_tc) {
+ netdev_reset_tc(dev);
+ return 0;
+ }
+
+ /* requested to support too many traffic classes */
+ if (num_tc > bp->max_cos) {
+ DP(NETIF_MSG_TX_ERR, "support for too many traffic classes"
+ " requested: %d. max supported is %d\n",
+ num_tc, bp->max_cos);
+ return -EINVAL;
+ }
+
+ /* declare amount of supported traffic classes */
+ if (netdev_set_num_tc(dev, num_tc)) {
+ DP(NETIF_MSG_TX_ERR, "failed to declare %d traffic classes\n",
+ num_tc);
+ return -EINVAL;
+ }
+
+ /* configure priority to traffic class mapping */
+ for (prio = 0; prio < BNX2X_MAX_PRIORITY; prio++) {
+ netdev_set_prio_tc_map(dev, prio, bp->prio_to_cos[prio]);
+ DP(BNX2X_MSG_SP, "mapping priority %d to tc %d\n",
+ prio, bp->prio_to_cos[prio]);
+ }
+
+
+ /* Use this configuration to diffrentiate tc0 from other COSes
+ This can be used for ets or pfc, and save the effort of setting
+ up a multio class queue disc or negotiating DCBX with a switch
+ netdev_set_prio_tc_map(dev, 0, 0);
+ DP(BNX2X_MSG_SP, "mapping priority %d to tc %d\n", 0, 0);
+ for (prio = 1; prio < 16; prio++) {
+ netdev_set_prio_tc_map(dev, prio, 1);
+ DP(BNX2X_MSG_SP, "mapping priority %d to tc %d\n", prio, 1);
+ } */
+
+ /* configure traffic class to transmission queue mapping */
+ for (cos = 0; cos < bp->max_cos; cos++) {
+ count = BNX2X_NUM_ETH_QUEUES(bp);
+ offset = cos * MAX_TXQS_PER_COS;
+ netdev_set_tc_queue(dev, cos, count, offset);
+ DP(BNX2X_MSG_SP, "mapping tc %d to offset %d count %d\n",
+ cos, offset, count);
+ }
+
+ return 0;
+}
+
+/* called with rtnl_lock */
+int bnx2x_change_mac_addr(struct net_device *dev, void *p)
+{
+ struct sockaddr *addr = p;
+ struct bnx2x *bp = netdev_priv(dev);
+ int rc = 0;
+
+ if (!is_valid_ether_addr((u8 *)(addr->sa_data)))
+ return -EINVAL;
+
+ if (netif_running(dev)) {
+ rc = bnx2x_set_eth_mac(bp, false);
+ if (rc)
+ return rc;
+ }
+
+ memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
+
+ if (netif_running(dev))
+ rc = bnx2x_set_eth_mac(bp, true);
+
+ return rc;
+}
+
+static void bnx2x_free_fp_mem_at(struct bnx2x *bp, int fp_index)
+{
+ union host_hc_status_block *sb = &bnx2x_fp(bp, fp_index, status_blk);
+ struct bnx2x_fastpath *fp = &bp->fp[fp_index];
+ u8 cos;
+
+ /* Common */
+#ifdef BCM_CNIC
+ if (IS_FCOE_IDX(fp_index)) {
+ memset(sb, 0, sizeof(union host_hc_status_block));
+ fp->status_blk_mapping = 0;
+
+ } else {
+#endif
+ /* status blocks */
+ if (!CHIP_IS_E1x(bp))
+ BNX2X_PCI_FREE(sb->e2_sb,
+ bnx2x_fp(bp, fp_index,
+ status_blk_mapping),
+ sizeof(struct host_hc_status_block_e2));
+ else
+ BNX2X_PCI_FREE(sb->e1x_sb,
+ bnx2x_fp(bp, fp_index,
+ status_blk_mapping),
+ sizeof(struct host_hc_status_block_e1x));
+#ifdef BCM_CNIC
+ }
+#endif
+ /* Rx */
+ if (!skip_rx_queue(bp, fp_index)) {
+ bnx2x_free_rx_bds(fp);
+
+ /* fastpath rx rings: rx_buf rx_desc rx_comp */
+ BNX2X_FREE(bnx2x_fp(bp, fp_index, rx_buf_ring));
+ BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, rx_desc_ring),
+ bnx2x_fp(bp, fp_index, rx_desc_mapping),
+ sizeof(struct eth_rx_bd) * NUM_RX_BD);
+
+ BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, rx_comp_ring),
+ bnx2x_fp(bp, fp_index, rx_comp_mapping),
+ sizeof(struct eth_fast_path_rx_cqe) *
+ NUM_RCQ_BD);
+
+ /* SGE ring */
+ BNX2X_FREE(bnx2x_fp(bp, fp_index, rx_page_ring));
+ BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, rx_sge_ring),
+ bnx2x_fp(bp, fp_index, rx_sge_mapping),
+ BCM_PAGE_SIZE * NUM_RX_SGE_PAGES);
+ }
+
+ /* Tx */
+ if (!skip_tx_queue(bp, fp_index)) {
+ /* fastpath tx rings: tx_buf tx_desc */
+ for_each_cos_in_tx_queue(fp, cos) {
+ struct bnx2x_fp_txdata *txdata = &fp->txdata[cos];
+
+ DP(BNX2X_MSG_SP,
+ "freeing tx memory of fp %d cos %d cid %d\n",
+ fp_index, cos, txdata->cid);
+
+ BNX2X_FREE(txdata->tx_buf_ring);
+ BNX2X_PCI_FREE(txdata->tx_desc_ring,
+ txdata->tx_desc_mapping,
+ sizeof(union eth_tx_bd_types) * NUM_TX_BD);
+ }
+ }
+ /* end of fastpath */
+}
+
+void bnx2x_free_fp_mem(struct bnx2x *bp)
+{
+ int i;
+ for_each_queue(bp, i)
+ bnx2x_free_fp_mem_at(bp, i);
+}
+
+static inline void set_sb_shortcuts(struct bnx2x *bp, int index)
+{
+ union host_hc_status_block status_blk = bnx2x_fp(bp, index, status_blk);
+ if (!CHIP_IS_E1x(bp)) {
+ bnx2x_fp(bp, index, sb_index_values) =
+ (__le16 *)status_blk.e2_sb->sb.index_values;
+ bnx2x_fp(bp, index, sb_running_index) =
+ (__le16 *)status_blk.e2_sb->sb.running_index;
+ } else {
+ bnx2x_fp(bp, index, sb_index_values) =
+ (__le16 *)status_blk.e1x_sb->sb.index_values;
+ bnx2x_fp(bp, index, sb_running_index) =
+ (__le16 *)status_blk.e1x_sb->sb.running_index;
+ }
+}
+
+static int bnx2x_alloc_fp_mem_at(struct bnx2x *bp, int index)
+{
+ union host_hc_status_block *sb;
+ struct bnx2x_fastpath *fp = &bp->fp[index];
+ int ring_size = 0;
+ u8 cos;
+
+ /* if rx_ring_size specified - use it */
+ int rx_ring_size = bp->rx_ring_size ? bp->rx_ring_size :
+ MAX_RX_AVAIL/BNX2X_NUM_RX_QUEUES(bp);
+
+ /* allocate at least number of buffers required by FW */
+ rx_ring_size = max_t(int, bp->disable_tpa ? MIN_RX_SIZE_NONTPA :
+ MIN_RX_SIZE_TPA,
+ rx_ring_size);
+
+ /* Common */
+ sb = &bnx2x_fp(bp, index, status_blk);
+#ifdef BCM_CNIC
+ if (!IS_FCOE_IDX(index)) {
+#endif
+ /* status blocks */
+ if (!CHIP_IS_E1x(bp))
+ BNX2X_PCI_ALLOC(sb->e2_sb,
+ &bnx2x_fp(bp, index, status_blk_mapping),
+ sizeof(struct host_hc_status_block_e2));
+ else
+ BNX2X_PCI_ALLOC(sb->e1x_sb,
+ &bnx2x_fp(bp, index, status_blk_mapping),
+ sizeof(struct host_hc_status_block_e1x));
+#ifdef BCM_CNIC
+ }
+#endif
+
+ /* FCoE Queue uses Default SB and doesn't ACK the SB, thus no need to
+ * set shortcuts for it.
+ */
+ if (!IS_FCOE_IDX(index))
+ set_sb_shortcuts(bp, index);
+
+ /* Tx */
+ if (!skip_tx_queue(bp, index)) {
+ /* fastpath tx rings: tx_buf tx_desc */
+ for_each_cos_in_tx_queue(fp, cos) {
+ struct bnx2x_fp_txdata *txdata = &fp->txdata[cos];
+
+ DP(BNX2X_MSG_SP, "allocating tx memory of "
+ "fp %d cos %d\n",
+ index, cos);
+
+ BNX2X_ALLOC(txdata->tx_buf_ring,
+ sizeof(struct sw_tx_bd) * NUM_TX_BD);
+ BNX2X_PCI_ALLOC(txdata->tx_desc_ring,
+ &txdata->tx_desc_mapping,
+ sizeof(union eth_tx_bd_types) * NUM_TX_BD);
+ }
+ }
+
+ /* Rx */
+ if (!skip_rx_queue(bp, index)) {
+ /* fastpath rx rings: rx_buf rx_desc rx_comp */
+ BNX2X_ALLOC(bnx2x_fp(bp, index, rx_buf_ring),
+ sizeof(struct sw_rx_bd) * NUM_RX_BD);
+ BNX2X_PCI_ALLOC(bnx2x_fp(bp, index, rx_desc_ring),
+ &bnx2x_fp(bp, index, rx_desc_mapping),
+ sizeof(struct eth_rx_bd) * NUM_RX_BD);
+
+ BNX2X_PCI_ALLOC(bnx2x_fp(bp, index, rx_comp_ring),
+ &bnx2x_fp(bp, index, rx_comp_mapping),
+ sizeof(struct eth_fast_path_rx_cqe) *
+ NUM_RCQ_BD);
+
+ /* SGE ring */
+ BNX2X_ALLOC(bnx2x_fp(bp, index, rx_page_ring),
+ sizeof(struct sw_rx_page) * NUM_RX_SGE);
+ BNX2X_PCI_ALLOC(bnx2x_fp(bp, index, rx_sge_ring),
+ &bnx2x_fp(bp, index, rx_sge_mapping),
+ BCM_PAGE_SIZE * NUM_RX_SGE_PAGES);
+ /* RX BD ring */
+ bnx2x_set_next_page_rx_bd(fp);
+
+ /* CQ ring */
+ bnx2x_set_next_page_rx_cq(fp);
+
+ /* BDs */
+ ring_size = bnx2x_alloc_rx_bds(fp, rx_ring_size);
+ if (ring_size < rx_ring_size)
+ goto alloc_mem_err;
+ }
+
+ return 0;
+
+/* handles low memory cases */
+alloc_mem_err:
+ BNX2X_ERR("Unable to allocate full memory for queue %d (size %d)\n",
+ index, ring_size);
+ /* FW will drop all packets if queue is not big enough,
+ * In these cases we disable the queue
+ * Min size is different for OOO, TPA and non-TPA queues
+ */
+ if (ring_size < (fp->disable_tpa ?
+ MIN_RX_SIZE_NONTPA : MIN_RX_SIZE_TPA)) {
+ /* release memory allocated for this queue */
+ bnx2x_free_fp_mem_at(bp, index);
+ return -ENOMEM;
+ }
+ return 0;
+}
+
+int bnx2x_alloc_fp_mem(struct bnx2x *bp)
+{
+ int i;
+
+ /**
+ * 1. Allocate FP for leading - fatal if error
+ * 2. {CNIC} Allocate FCoE FP - fatal if error
+ * 3. {CNIC} Allocate OOO + FWD - disable OOO if error
+ * 4. Allocate RSS - fix number of queues if error
+ */
+
+ /* leading */
+ if (bnx2x_alloc_fp_mem_at(bp, 0))
+ return -ENOMEM;
+
+#ifdef BCM_CNIC
+ if (!NO_FCOE(bp))
+ /* FCoE */
+ if (bnx2x_alloc_fp_mem_at(bp, FCOE_IDX))
+ /* we will fail load process instead of mark
+ * NO_FCOE_FLAG
+ */
+ return -ENOMEM;
+#endif
+
+ /* RSS */
+ for_each_nondefault_eth_queue(bp, i)
+ if (bnx2x_alloc_fp_mem_at(bp, i))
+ break;
+
+ /* handle memory failures */
+ if (i != BNX2X_NUM_ETH_QUEUES(bp)) {
+ int delta = BNX2X_NUM_ETH_QUEUES(bp) - i;
+
+ WARN_ON(delta < 0);
+#ifdef BCM_CNIC
+ /**
+ * move non eth FPs next to last eth FP
+ * must be done in that order
+ * FCOE_IDX < FWD_IDX < OOO_IDX
+ */
+
+ /* move FCoE fp even NO_FCOE_FLAG is on */
+ bnx2x_move_fp(bp, FCOE_IDX, FCOE_IDX - delta);
+#endif
+ bp->num_queues -= delta;
+ BNX2X_ERR("Adjusted num of queues from %d to %d\n",
+ bp->num_queues + delta, bp->num_queues);
+ }
+
+ return 0;
+}
+
+void bnx2x_free_mem_bp(struct bnx2x *bp)
+{
+ kfree(bp->fp);
+ kfree(bp->msix_table);
+ kfree(bp->ilt);
+}
+
+int __devinit bnx2x_alloc_mem_bp(struct bnx2x *bp)
+{
+ struct bnx2x_fastpath *fp;
+ struct msix_entry *tbl;
+ struct bnx2x_ilt *ilt;
+ int msix_table_size = 0;
+
+ /*
+ * The biggest MSI-X table we might need is as a maximum number of fast
+ * path IGU SBs plus default SB (for PF).
+ */
+ msix_table_size = bp->igu_sb_cnt + 1;
+
+ /* fp array: RSS plus CNIC related L2 queues */
+ fp = kzalloc((BNX2X_MAX_RSS_COUNT(bp) + NON_ETH_CONTEXT_USE) *
+ sizeof(*fp), GFP_KERNEL);
+ if (!fp)
+ goto alloc_err;
+ bp->fp = fp;
+
+ /* msix table */
+ tbl = kzalloc(msix_table_size * sizeof(*tbl), GFP_KERNEL);
+ if (!tbl)
+ goto alloc_err;
+ bp->msix_table = tbl;
+
+ /* ilt */
+ ilt = kzalloc(sizeof(*ilt), GFP_KERNEL);
+ if (!ilt)
+ goto alloc_err;
+ bp->ilt = ilt;
+
+ return 0;
+alloc_err:
+ bnx2x_free_mem_bp(bp);
+ return -ENOMEM;
+
+}
+
+int bnx2x_reload_if_running(struct net_device *dev)
+{
+ struct bnx2x *bp = netdev_priv(dev);
+
+ if (unlikely(!netif_running(dev)))
+ return 0;
+
+ bnx2x_nic_unload(bp, UNLOAD_NORMAL);
+ return bnx2x_nic_load(bp, LOAD_NORMAL);
+}
+
+int bnx2x_get_cur_phy_idx(struct bnx2x *bp)
+{
+ u32 sel_phy_idx = 0;
+ if (bp->link_params.num_phys <= 1)
+ return INT_PHY;
+
+ if (bp->link_vars.link_up) {
+ sel_phy_idx = EXT_PHY1;
+ /* In case link is SERDES, check if the EXT_PHY2 is the one */
+ if ((bp->link_vars.link_status & LINK_STATUS_SERDES_LINK) &&
+ (bp->link_params.phy[EXT_PHY2].supported & SUPPORTED_FIBRE))
+ sel_phy_idx = EXT_PHY2;
+ } else {
+
+ switch (bnx2x_phy_selection(&bp->link_params)) {
+ case PORT_HW_CFG_PHY_SELECTION_HARDWARE_DEFAULT:
+ case PORT_HW_CFG_PHY_SELECTION_FIRST_PHY:
+ case PORT_HW_CFG_PHY_SELECTION_FIRST_PHY_PRIORITY:
+ sel_phy_idx = EXT_PHY1;
+ break;
+ case PORT_HW_CFG_PHY_SELECTION_SECOND_PHY:
+ case PORT_HW_CFG_PHY_SELECTION_SECOND_PHY_PRIORITY:
+ sel_phy_idx = EXT_PHY2;
+ break;
+ }
+ }
+
+ return sel_phy_idx;
+
+}
+int bnx2x_get_link_cfg_idx(struct bnx2x *bp)
+{
+ u32 sel_phy_idx = bnx2x_get_cur_phy_idx(bp);
+ /*
+ * The selected actived PHY is always after swapping (in case PHY
+ * swapping is enabled). So when swapping is enabled, we need to reverse
+ * the configuration
+ */
+
+ if (bp->link_params.multi_phy_config &
+ PORT_HW_CFG_PHY_SWAPPED_ENABLED) {
+ if (sel_phy_idx == EXT_PHY1)
+ sel_phy_idx = EXT_PHY2;
+ else if (sel_phy_idx == EXT_PHY2)
+ sel_phy_idx = EXT_PHY1;
+ }
+ return LINK_CONFIG_IDX(sel_phy_idx);
+}
+
+#if defined(NETDEV_FCOE_WWNN) && defined(BCM_CNIC)
+int bnx2x_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type)
+{
+ struct bnx2x *bp = netdev_priv(dev);
+ struct cnic_eth_dev *cp = &bp->cnic_eth_dev;
+
+ switch (type) {
+ case NETDEV_FCOE_WWNN:
+ *wwn = HILO_U64(cp->fcoe_wwn_node_name_hi,
+ cp->fcoe_wwn_node_name_lo);
+ break;
+ case NETDEV_FCOE_WWPN:
+ *wwn = HILO_U64(cp->fcoe_wwn_port_name_hi,
+ cp->fcoe_wwn_port_name_lo);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+#endif
+
+/* called with rtnl_lock */
+int bnx2x_change_mtu(struct net_device *dev, int new_mtu)
+{
+ struct bnx2x *bp = netdev_priv(dev);
+
+ if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
+ pr_err("Handling parity error recovery. Try again later\n");
+ return -EAGAIN;
+ }
+
+ if ((new_mtu > ETH_MAX_JUMBO_PACKET_SIZE) ||
+ ((new_mtu + ETH_HLEN) < ETH_MIN_PACKET_SIZE))
+ return -EINVAL;
+
+ /* This does not race with packet allocation
+ * because the actual alloc size is
+ * only updated as part of load
+ */
+ dev->mtu = new_mtu;
+
+ return bnx2x_reload_if_running(dev);
+}
+
+u32 bnx2x_fix_features(struct net_device *dev, u32 features)
+{
+ struct bnx2x *bp = netdev_priv(dev);
+
+ /* TPA requires Rx CSUM offloading */
+ if (!(features & NETIF_F_RXCSUM) || bp->disable_tpa)
+ features &= ~NETIF_F_LRO;
+
+ return features;
+}
+
+int bnx2x_set_features(struct net_device *dev, u32 features)
+{
+ struct bnx2x *bp = netdev_priv(dev);
+ u32 flags = bp->flags;
+ bool bnx2x_reload = false;
+
+ if (features & NETIF_F_LRO)
+ flags |= TPA_ENABLE_FLAG;
+ else
+ flags &= ~TPA_ENABLE_FLAG;
+
+ if (features & NETIF_F_LOOPBACK) {
+ if (bp->link_params.loopback_mode != LOOPBACK_BMAC) {
+ bp->link_params.loopback_mode = LOOPBACK_BMAC;
+ bnx2x_reload = true;
+ }
+ } else {
+ if (bp->link_params.loopback_mode != LOOPBACK_NONE) {
+ bp->link_params.loopback_mode = LOOPBACK_NONE;
+ bnx2x_reload = true;
+ }
+ }
+
+ if (flags ^ bp->flags) {
+ bp->flags = flags;
+ bnx2x_reload = true;
+ }
+
+ if (bnx2x_reload) {
+ if (bp->recovery_state == BNX2X_RECOVERY_DONE)
+ return bnx2x_reload_if_running(dev);
+ /* else: bnx2x_nic_load() will be called at end of recovery */
+ }
+
+ return 0;
+}
+
+void bnx2x_tx_timeout(struct net_device *dev)
+{
+ struct bnx2x *bp = netdev_priv(dev);
+
+#ifdef BNX2X_STOP_ON_ERROR
+ if (!bp->panic)
+ bnx2x_panic();
+#endif
+
+ smp_mb__before_clear_bit();
+ set_bit(BNX2X_SP_RTNL_TX_TIMEOUT, &bp->sp_rtnl_state);
+ smp_mb__after_clear_bit();
+
+ /* This allows the netif to be shutdown gracefully before resetting */
+ schedule_delayed_work(&bp->sp_rtnl_task, 0);
+}
+
+int bnx2x_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+ struct net_device *dev = pci_get_drvdata(pdev);
+ struct bnx2x *bp;
+
+ if (!dev) {
+ dev_err(&pdev->dev, "BAD net device from bnx2x_init_one\n");
+ return -ENODEV;
+ }
+ bp = netdev_priv(dev);
+
+ rtnl_lock();
+
+ pci_save_state(pdev);
+
+ if (!netif_running(dev)) {
+ rtnl_unlock();
+ return 0;
+ }
+
+ netif_device_detach(dev);
+
+ bnx2x_nic_unload(bp, UNLOAD_CLOSE);
+
+ bnx2x_set_power_state(bp, pci_choose_state(pdev, state));
+
+ rtnl_unlock();
+
+ return 0;
+}
+
+int bnx2x_resume(struct pci_dev *pdev)
+{
+ struct net_device *dev = pci_get_drvdata(pdev);
+ struct bnx2x *bp;
+ int rc;
+
+ if (!dev) {
+ dev_err(&pdev->dev, "BAD net device from bnx2x_init_one\n");
+ return -ENODEV;
+ }
+ bp = netdev_priv(dev);
+
+ if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
+ pr_err("Handling parity error recovery. Try again later\n");
+ return -EAGAIN;
+ }
+
+ rtnl_lock();
+
+ pci_restore_state(pdev);
+
+ if (!netif_running(dev)) {
+ rtnl_unlock();
+ return 0;
+ }
+
+ bnx2x_set_power_state(bp, PCI_D0);
+ netif_device_attach(dev);
+
+ /* Since the chip was reset, clear the FW sequence number */
+ bp->fw_seq = 0;
+ rc = bnx2x_nic_load(bp, LOAD_OPEN);
+
+ rtnl_unlock();
+
+ return rc;
+}
+
+
+void bnx2x_set_ctx_validation(struct bnx2x *bp, struct eth_context *cxt,
+ u32 cid)
+{
+ /* ustorm cxt validation */
+ cxt->ustorm_ag_context.cdu_usage =
+ CDU_RSRVD_VALUE_TYPE_A(HW_CID(bp, cid),
+ CDU_REGION_NUMBER_UCM_AG, ETH_CONNECTION_TYPE);
+ /* xcontext validation */
+ cxt->xstorm_ag_context.cdu_reserved =
+ CDU_RSRVD_VALUE_TYPE_A(HW_CID(bp, cid),
+ CDU_REGION_NUMBER_XCM_AG, ETH_CONNECTION_TYPE);
+}
+
+static inline void storm_memset_hc_timeout(struct bnx2x *bp, u8 port,
+ u8 fw_sb_id, u8 sb_index,
+ u8 ticks)
+{
+
+ u32 addr = BAR_CSTRORM_INTMEM +
+ CSTORM_STATUS_BLOCK_DATA_TIMEOUT_OFFSET(fw_sb_id, sb_index);
+ REG_WR8(bp, addr, ticks);
+ DP(NETIF_MSG_HW, "port %x fw_sb_id %d sb_index %d ticks %d\n",
+ port, fw_sb_id, sb_index, ticks);
+}
+
+static inline void storm_memset_hc_disable(struct bnx2x *bp, u8 port,
+ u16 fw_sb_id, u8 sb_index,
+ u8 disable)
+{
+ u32 enable_flag = disable ? 0 : (1 << HC_INDEX_DATA_HC_ENABLED_SHIFT);
+ u32 addr = BAR_CSTRORM_INTMEM +
+ CSTORM_STATUS_BLOCK_DATA_FLAGS_OFFSET(fw_sb_id, sb_index);
+ u16 flags = REG_RD16(bp, addr);
+ /* clear and set */
+ flags &= ~HC_INDEX_DATA_HC_ENABLED;
+ flags |= enable_flag;
+ REG_WR16(bp, addr, flags);
+ DP(NETIF_MSG_HW, "port %x fw_sb_id %d sb_index %d disable %d\n",
+ port, fw_sb_id, sb_index, disable);
+}
+
+void bnx2x_update_coalesce_sb_index(struct bnx2x *bp, u8 fw_sb_id,
+ u8 sb_index, u8 disable, u16 usec)
+{
+ int port = BP_PORT(bp);
+ u8 ticks = usec / BNX2X_BTR;
+
+ storm_memset_hc_timeout(bp, port, fw_sb_id, sb_index, ticks);
+
+ disable = disable ? 1 : (usec ? 0 : 1);
+ storm_memset_hc_disable(bp, port, fw_sb_id, sb_index, disable);
+}
--- /dev/null
- if (!CHIP_IS_E1x(bp)) {
+/* bnx2x_dcb.c: Broadcom Everest network driver.
+ *
+ * Copyright 2009-2011 Broadcom Corporation
+ *
+ * Unless you and Broadcom execute a separate written software license
+ * agreement governing use of this software, this software is licensed to you
+ * under the terms of the GNU General Public License version 2, available
+ * at http://www.gnu.org/licenses/old-licenses/gpl-2.0.html (the "GPL").
+ *
+ * Notwithstanding the above, under no circumstances may you combine this
+ * software in any way with any other Broadcom software provided under a
+ * license other than the GPL, without Broadcom's express prior written
+ * consent.
+ *
+ * Maintained by: Eilon Greenstein <eilong@broadcom.com>
+ * Written by: Dmitry Kravkov
+ *
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/rtnetlink.h>
+#include <net/dcbnl.h>
+
+#include "bnx2x.h"
+#include "bnx2x_cmn.h"
+#include "bnx2x_dcb.h"
+
+/* forward declarations of dcbx related functions */
+static int bnx2x_dcbx_stop_hw_tx(struct bnx2x *bp);
+static void bnx2x_pfc_set_pfc(struct bnx2x *bp);
+static void bnx2x_dcbx_update_ets_params(struct bnx2x *bp);
+static int bnx2x_dcbx_resume_hw_tx(struct bnx2x *bp);
+static void bnx2x_dcbx_get_ets_pri_pg_tbl(struct bnx2x *bp,
+ u32 *set_configuration_ets_pg,
+ u32 *pri_pg_tbl);
+static void bnx2x_dcbx_get_num_pg_traf_type(struct bnx2x *bp,
+ u32 *pg_pri_orginal_spread,
+ struct pg_help_data *help_data);
+static void bnx2x_dcbx_fill_cos_params(struct bnx2x *bp,
+ struct pg_help_data *help_data,
+ struct dcbx_ets_feature *ets,
+ u32 *pg_pri_orginal_spread);
+static void bnx2x_dcbx_separate_pauseable_from_non(struct bnx2x *bp,
+ struct cos_help_data *cos_data,
+ u32 *pg_pri_orginal_spread,
+ struct dcbx_ets_feature *ets);
+static void bnx2x_dcbx_fw_struct(struct bnx2x *bp,
+ struct bnx2x_func_tx_start_params*);
+
+/* helpers: read/write len bytes from addr into buff by REG_RD/REG_WR */
+static void bnx2x_read_data(struct bnx2x *bp, u32 *buff,
+ u32 addr, u32 len)
+{
+ int i;
+ for (i = 0; i < len; i += 4, buff++)
+ *buff = REG_RD(bp, addr + i);
+}
+
+static void bnx2x_write_data(struct bnx2x *bp, u32 *buff,
+ u32 addr, u32 len)
+{
+ int i;
+ for (i = 0; i < len; i += 4, buff++)
+ REG_WR(bp, addr + i, *buff);
+}
+
+static void bnx2x_pfc_set(struct bnx2x *bp)
+{
+ struct bnx2x_nig_brb_pfc_port_params pfc_params = {0};
+ u32 pri_bit, val = 0;
+ int i;
+
+ pfc_params.num_of_rx_cos_priority_mask =
+ bp->dcbx_port_params.ets.num_of_cos;
+
+ /* Tx COS configuration */
+ for (i = 0; i < bp->dcbx_port_params.ets.num_of_cos; i++)
+ /*
+ * We configure only the pauseable bits (non pauseable aren't
+ * configured at all) it's done to avoid false pauses from
+ * network
+ */
+ pfc_params.rx_cos_priority_mask[i] =
+ bp->dcbx_port_params.ets.cos_params[i].pri_bitmask
+ & DCBX_PFC_PRI_PAUSE_MASK(bp);
+
+ /*
+ * Rx COS configuration
+ * Changing PFC RX configuration .
+ * In RX COS0 will always be configured to lossy and COS1 to lossless
+ */
+ for (i = 0 ; i < MAX_PFC_PRIORITIES ; i++) {
+ pri_bit = 1 << i;
+
+ if (pri_bit & DCBX_PFC_PRI_PAUSE_MASK(bp))
+ val |= 1 << (i * 4);
+ }
+
+ pfc_params.pkt_priority_to_cos = val;
+
+ /* RX COS0 */
+ pfc_params.llfc_low_priority_classes = 0;
+ /* RX COS1 */
+ pfc_params.llfc_high_priority_classes = DCBX_PFC_PRI_PAUSE_MASK(bp);
+
+ /* BRB configuration */
+ pfc_params.cos0_pauseable = false;
+ pfc_params.cos1_pauseable = true;
+
+ bnx2x_acquire_phy_lock(bp);
+ bp->link_params.feature_config_flags |= FEATURE_CONFIG_PFC_ENABLED;
+ bnx2x_update_pfc(&bp->link_params, &bp->link_vars, &pfc_params);
+ bnx2x_release_phy_lock(bp);
+}
+
+static void bnx2x_pfc_clear(struct bnx2x *bp)
+{
+ struct bnx2x_nig_brb_pfc_port_params nig_params = {0};
+ nig_params.pause_enable = 1;
+#ifdef BNX2X_SAFC
+ if (bp->flags & SAFC_TX_FLAG) {
+ u32 high = 0, low = 0;
+ int i;
+
+ for (i = 0; i < BNX2X_MAX_PRIORITY; i++) {
+ if (bp->pri_map[i] == 1)
+ high |= (1 << i);
+ if (bp->pri_map[i] == 0)
+ low |= (1 << i);
+ }
+
+ nig_params.llfc_low_priority_classes = high;
+ nig_params.llfc_low_priority_classes = low;
+
+ nig_params.pause_enable = 0;
+ nig_params.llfc_enable = 1;
+ nig_params.llfc_out_en = 1;
+ }
+#endif /* BNX2X_SAFC */
+ bnx2x_acquire_phy_lock(bp);
+ bp->link_params.feature_config_flags &= ~FEATURE_CONFIG_PFC_ENABLED;
+ bnx2x_update_pfc(&bp->link_params, &bp->link_vars, &nig_params);
+ bnx2x_release_phy_lock(bp);
+}
+
+static void bnx2x_dump_dcbx_drv_param(struct bnx2x *bp,
+ struct dcbx_features *features,
+ u32 error)
+{
+ u8 i = 0;
+ DP(NETIF_MSG_LINK, "local_mib.error %x\n", error);
+
+ /* PG */
+ DP(NETIF_MSG_LINK,
+ "local_mib.features.ets.enabled %x\n", features->ets.enabled);
+ for (i = 0; i < DCBX_MAX_NUM_PG_BW_ENTRIES; i++)
+ DP(NETIF_MSG_LINK,
+ "local_mib.features.ets.pg_bw_tbl[%d] %d\n", i,
+ DCBX_PG_BW_GET(features->ets.pg_bw_tbl, i));
+ for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES; i++)
+ DP(NETIF_MSG_LINK,
+ "local_mib.features.ets.pri_pg_tbl[%d] %d\n", i,
+ DCBX_PRI_PG_GET(features->ets.pri_pg_tbl, i));
+
+ /* pfc */
+ DP(NETIF_MSG_LINK, "dcbx_features.pfc.pri_en_bitmap %x\n",
+ features->pfc.pri_en_bitmap);
+ DP(NETIF_MSG_LINK, "dcbx_features.pfc.pfc_caps %x\n",
+ features->pfc.pfc_caps);
+ DP(NETIF_MSG_LINK, "dcbx_features.pfc.enabled %x\n",
+ features->pfc.enabled);
+
+ DP(NETIF_MSG_LINK, "dcbx_features.app.default_pri %x\n",
+ features->app.default_pri);
+ DP(NETIF_MSG_LINK, "dcbx_features.app.tc_supported %x\n",
+ features->app.tc_supported);
+ DP(NETIF_MSG_LINK, "dcbx_features.app.enabled %x\n",
+ features->app.enabled);
+ for (i = 0; i < DCBX_MAX_APP_PROTOCOL; i++) {
+ DP(NETIF_MSG_LINK,
+ "dcbx_features.app.app_pri_tbl[%x].app_id %x\n",
+ i, features->app.app_pri_tbl[i].app_id);
+ DP(NETIF_MSG_LINK,
+ "dcbx_features.app.app_pri_tbl[%x].pri_bitmap %x\n",
+ i, features->app.app_pri_tbl[i].pri_bitmap);
+ DP(NETIF_MSG_LINK,
+ "dcbx_features.app.app_pri_tbl[%x].appBitfield %x\n",
+ i, features->app.app_pri_tbl[i].appBitfield);
+ }
+}
+
+static void bnx2x_dcbx_get_ap_priority(struct bnx2x *bp,
+ u8 pri_bitmap,
+ u8 llfc_traf_type)
+{
+ u32 pri = MAX_PFC_PRIORITIES;
+ u32 index = MAX_PFC_PRIORITIES - 1;
+ u32 pri_mask;
+ u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
+
+ /* Choose the highest priority */
+ while ((MAX_PFC_PRIORITIES == pri) && (0 != index)) {
+ pri_mask = 1 << index;
+ if (GET_FLAGS(pri_bitmap, pri_mask))
+ pri = index ;
+ index--;
+ }
+
+ if (pri < MAX_PFC_PRIORITIES)
+ ttp[llfc_traf_type] = max_t(u32, ttp[llfc_traf_type], pri);
+}
+
+static void bnx2x_dcbx_get_ap_feature(struct bnx2x *bp,
+ struct dcbx_app_priority_feature *app,
+ u32 error) {
+ u8 index;
+ u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
+
+ if (GET_FLAGS(error, DCBX_LOCAL_APP_ERROR))
+ DP(NETIF_MSG_LINK, "DCBX_LOCAL_APP_ERROR\n");
+
+ if (GET_FLAGS(error, DCBX_LOCAL_APP_MISMATCH))
+ DP(NETIF_MSG_LINK, "DCBX_LOCAL_APP_MISMATCH\n");
+
+ if (app->enabled &&
+ !GET_FLAGS(error, DCBX_LOCAL_APP_ERROR | DCBX_LOCAL_APP_MISMATCH)) {
+
+ bp->dcbx_port_params.app.enabled = true;
+
+ for (index = 0 ; index < LLFC_DRIVER_TRAFFIC_TYPE_MAX; index++)
+ ttp[index] = 0;
+
+ if (app->default_pri < MAX_PFC_PRIORITIES)
+ ttp[LLFC_TRAFFIC_TYPE_NW] = app->default_pri;
+
+ for (index = 0 ; index < DCBX_MAX_APP_PROTOCOL; index++) {
+ struct dcbx_app_priority_entry *entry =
+ app->app_pri_tbl;
+
+ if (GET_FLAGS(entry[index].appBitfield,
+ DCBX_APP_SF_ETH_TYPE) &&
+ ETH_TYPE_FCOE == entry[index].app_id)
+ bnx2x_dcbx_get_ap_priority(bp,
+ entry[index].pri_bitmap,
+ LLFC_TRAFFIC_TYPE_FCOE);
+
+ if (GET_FLAGS(entry[index].appBitfield,
+ DCBX_APP_SF_PORT) &&
+ TCP_PORT_ISCSI == entry[index].app_id)
+ bnx2x_dcbx_get_ap_priority(bp,
+ entry[index].pri_bitmap,
+ LLFC_TRAFFIC_TYPE_ISCSI);
+ }
+ } else {
+ DP(NETIF_MSG_LINK, "DCBX_LOCAL_APP_DISABLED\n");
+ bp->dcbx_port_params.app.enabled = false;
+ for (index = 0 ; index < LLFC_DRIVER_TRAFFIC_TYPE_MAX; index++)
+ ttp[index] = INVALID_TRAFFIC_TYPE_PRIORITY;
+ }
+}
+
+static void bnx2x_dcbx_get_ets_feature(struct bnx2x *bp,
+ struct dcbx_ets_feature *ets,
+ u32 error) {
+ int i = 0;
+ u32 pg_pri_orginal_spread[DCBX_MAX_NUM_PG_BW_ENTRIES] = {0};
+ struct pg_help_data pg_help_data;
+ struct bnx2x_dcbx_cos_params *cos_params =
+ bp->dcbx_port_params.ets.cos_params;
+
+ memset(&pg_help_data, 0, sizeof(struct pg_help_data));
+
+
+ if (GET_FLAGS(error, DCBX_LOCAL_ETS_ERROR))
+ DP(NETIF_MSG_LINK, "DCBX_LOCAL_ETS_ERROR\n");
+
+
+ /* Clean up old settings of ets on COS */
+ for (i = 0; i < ARRAY_SIZE(bp->dcbx_port_params.ets.cos_params) ; i++) {
+ cos_params[i].pauseable = false;
+ cos_params[i].strict = BNX2X_DCBX_STRICT_INVALID;
+ cos_params[i].bw_tbl = DCBX_INVALID_COS_BW;
+ cos_params[i].pri_bitmask = 0;
+ }
+
+ if (bp->dcbx_port_params.app.enabled &&
+ !GET_FLAGS(error, DCBX_LOCAL_ETS_ERROR) &&
+ ets->enabled) {
+ DP(NETIF_MSG_LINK, "DCBX_LOCAL_ETS_ENABLE\n");
+ bp->dcbx_port_params.ets.enabled = true;
+
+ bnx2x_dcbx_get_ets_pri_pg_tbl(bp,
+ pg_pri_orginal_spread,
+ ets->pri_pg_tbl);
+
+ bnx2x_dcbx_get_num_pg_traf_type(bp,
+ pg_pri_orginal_spread,
+ &pg_help_data);
+
+ bnx2x_dcbx_fill_cos_params(bp, &pg_help_data,
+ ets, pg_pri_orginal_spread);
+
+ } else {
+ DP(NETIF_MSG_LINK, "DCBX_LOCAL_ETS_DISABLED\n");
+ bp->dcbx_port_params.ets.enabled = false;
+ ets->pri_pg_tbl[0] = 0;
+
+ for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES ; i++)
+ DCBX_PG_BW_SET(ets->pg_bw_tbl, i, 1);
+ }
+}
+
+static void bnx2x_dcbx_get_pfc_feature(struct bnx2x *bp,
+ struct dcbx_pfc_feature *pfc, u32 error)
+{
+
+ if (GET_FLAGS(error, DCBX_LOCAL_PFC_ERROR))
+ DP(NETIF_MSG_LINK, "DCBX_LOCAL_PFC_ERROR\n");
+
+ if (bp->dcbx_port_params.app.enabled &&
+ !GET_FLAGS(error, DCBX_LOCAL_PFC_ERROR | DCBX_LOCAL_PFC_MISMATCH) &&
+ pfc->enabled) {
+ bp->dcbx_port_params.pfc.enabled = true;
+ bp->dcbx_port_params.pfc.priority_non_pauseable_mask =
+ ~(pfc->pri_en_bitmap);
+ } else {
+ DP(NETIF_MSG_LINK, "DCBX_LOCAL_PFC_DISABLED\n");
+ bp->dcbx_port_params.pfc.enabled = false;
+ bp->dcbx_port_params.pfc.priority_non_pauseable_mask = 0;
+ }
+}
+
+/* maps unmapped priorities to to the same COS as L2 */
+static void bnx2x_dcbx_map_nw(struct bnx2x *bp)
+{
+ int i;
+ u32 unmapped = (1 << MAX_PFC_PRIORITIES) - 1; /* all ones */
+ u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
+ u32 nw_prio = 1 << ttp[LLFC_TRAFFIC_TYPE_NW];
+ struct bnx2x_dcbx_cos_params *cos_params =
+ bp->dcbx_port_params.ets.cos_params;
+
+ /* get unmapped priorities by clearing mapped bits */
+ for (i = 0; i < LLFC_DRIVER_TRAFFIC_TYPE_MAX; i++)
+ unmapped &= ~(1 << ttp[i]);
+
+ /* find cos for nw prio and extend it with unmapped */
+ for (i = 0; i < ARRAY_SIZE(bp->dcbx_port_params.ets.cos_params); i++) {
+ if (cos_params[i].pri_bitmask & nw_prio) {
+ /* extend the bitmask with unmapped */
+ DP(NETIF_MSG_LINK,
+ "cos %d extended with 0x%08x\n", i, unmapped);
+ cos_params[i].pri_bitmask |= unmapped;
+ break;
+ }
+ }
+}
+
+static void bnx2x_get_dcbx_drv_param(struct bnx2x *bp,
+ struct dcbx_features *features,
+ u32 error)
+{
+ bnx2x_dcbx_get_ap_feature(bp, &features->app, error);
+
+ bnx2x_dcbx_get_pfc_feature(bp, &features->pfc, error);
+
+ bnx2x_dcbx_get_ets_feature(bp, &features->ets, error);
+
+ bnx2x_dcbx_map_nw(bp);
+}
+
+#define DCBX_LOCAL_MIB_MAX_TRY_READ (100)
+static int bnx2x_dcbx_read_mib(struct bnx2x *bp,
+ u32 *base_mib_addr,
+ u32 offset,
+ int read_mib_type)
+{
+ int max_try_read = 0;
+ u32 mib_size, prefix_seq_num, suffix_seq_num;
+ struct lldp_remote_mib *remote_mib ;
+ struct lldp_local_mib *local_mib;
+
+
+ switch (read_mib_type) {
+ case DCBX_READ_LOCAL_MIB:
+ mib_size = sizeof(struct lldp_local_mib);
+ break;
+ case DCBX_READ_REMOTE_MIB:
+ mib_size = sizeof(struct lldp_remote_mib);
+ break;
+ default:
+ return 1; /*error*/
+ }
+
+ offset += BP_PORT(bp) * mib_size;
+
+ do {
+ bnx2x_read_data(bp, base_mib_addr, offset, mib_size);
+
+ max_try_read++;
+
+ switch (read_mib_type) {
+ case DCBX_READ_LOCAL_MIB:
+ local_mib = (struct lldp_local_mib *) base_mib_addr;
+ prefix_seq_num = local_mib->prefix_seq_num;
+ suffix_seq_num = local_mib->suffix_seq_num;
+ break;
+ case DCBX_READ_REMOTE_MIB:
+ remote_mib = (struct lldp_remote_mib *) base_mib_addr;
+ prefix_seq_num = remote_mib->prefix_seq_num;
+ suffix_seq_num = remote_mib->suffix_seq_num;
+ break;
+ default:
+ return 1; /*error*/
+ }
+ } while ((prefix_seq_num != suffix_seq_num) &&
+ (max_try_read < DCBX_LOCAL_MIB_MAX_TRY_READ));
+
+ if (max_try_read >= DCBX_LOCAL_MIB_MAX_TRY_READ) {
+ BNX2X_ERR("MIB could not be read\n");
+ return 1;
+ }
+
+ return 0;
+}
+
+static void bnx2x_pfc_set_pfc(struct bnx2x *bp)
+{
+ if (bp->dcbx_port_params.pfc.enabled &&
+ !(bp->dcbx_error & DCBX_REMOTE_MIB_ERROR))
+ /*
+ * 1. Fills up common PFC structures if required
+ * 2. Configure NIG, MAC and BRB via the elink
+ */
+ bnx2x_pfc_set(bp);
+ else
+ bnx2x_pfc_clear(bp);
+}
+
+static int bnx2x_dcbx_stop_hw_tx(struct bnx2x *bp)
+{
+ struct bnx2x_func_state_params func_params = {0};
+
+ func_params.f_obj = &bp->func_obj;
+ func_params.cmd = BNX2X_F_CMD_TX_STOP;
+
+ DP(NETIF_MSG_LINK, "STOP TRAFFIC\n");
+ return bnx2x_func_state_change(bp, &func_params);
+}
+
+static int bnx2x_dcbx_resume_hw_tx(struct bnx2x *bp)
+{
+ struct bnx2x_func_state_params func_params = {0};
+ struct bnx2x_func_tx_start_params *tx_params =
+ &func_params.params.tx_start;
+
+ func_params.f_obj = &bp->func_obj;
+ func_params.cmd = BNX2X_F_CMD_TX_START;
+
+ bnx2x_dcbx_fw_struct(bp, tx_params);
+
+ DP(NETIF_MSG_LINK, "START TRAFFIC\n");
+ return bnx2x_func_state_change(bp, &func_params);
+}
+
+static void bnx2x_dcbx_2cos_limit_update_ets_config(struct bnx2x *bp)
+{
+ struct bnx2x_dcbx_pg_params *ets = &(bp->dcbx_port_params.ets);
+ int rc = 0;
+
+ if (ets->num_of_cos == 0 || ets->num_of_cos > DCBX_COS_MAX_NUM_E2) {
+ BNX2X_ERR("Illegal number of COSes %d\n", ets->num_of_cos);
+ return;
+ }
+
+ /* valid COS entries */
+ if (ets->num_of_cos == 1) /* no ETS */
+ return;
+
+ /* sanity */
+ if (((BNX2X_DCBX_STRICT_INVALID == ets->cos_params[0].strict) &&
+ (DCBX_INVALID_COS_BW == ets->cos_params[0].bw_tbl)) ||
+ ((BNX2X_DCBX_STRICT_INVALID == ets->cos_params[1].strict) &&
+ (DCBX_INVALID_COS_BW == ets->cos_params[1].bw_tbl))) {
+ BNX2X_ERR("all COS should have at least bw_limit or strict"
+ "ets->cos_params[0].strict= %x"
+ "ets->cos_params[0].bw_tbl= %x"
+ "ets->cos_params[1].strict= %x"
+ "ets->cos_params[1].bw_tbl= %x",
+ ets->cos_params[0].strict,
+ ets->cos_params[0].bw_tbl,
+ ets->cos_params[1].strict,
+ ets->cos_params[1].bw_tbl);
+ return;
+ }
+ /* If we join a group and there is bw_tbl and strict then bw rules */
+ if ((DCBX_INVALID_COS_BW != ets->cos_params[0].bw_tbl) &&
+ (DCBX_INVALID_COS_BW != ets->cos_params[1].bw_tbl)) {
+ u32 bw_tbl_0 = ets->cos_params[0].bw_tbl;
+ u32 bw_tbl_1 = ets->cos_params[1].bw_tbl;
+ /* Do not allow 0-100 configuration
+ * since PBF does not support it
+ * force 1-99 instead
+ */
+ if (bw_tbl_0 == 0) {
+ bw_tbl_0 = 1;
+ bw_tbl_1 = 99;
+ } else if (bw_tbl_1 == 0) {
+ bw_tbl_1 = 1;
+ bw_tbl_0 = 99;
+ }
+
+ bnx2x_ets_bw_limit(&bp->link_params, bw_tbl_0, bw_tbl_1);
+ } else {
+ if (ets->cos_params[0].strict == BNX2X_DCBX_STRICT_COS_HIGHEST)
+ rc = bnx2x_ets_strict(&bp->link_params, 0);
+ else if (ets->cos_params[1].strict
+ == BNX2X_DCBX_STRICT_COS_HIGHEST)
+ rc = bnx2x_ets_strict(&bp->link_params, 1);
+ if (rc)
+ BNX2X_ERR("update_ets_params failed\n");
+ }
+}
+
+/*
+ * In E3B0 the configuration may have more than 2 COS.
+ */
+void bnx2x_dcbx_update_ets_config(struct bnx2x *bp)
+{
+ struct bnx2x_dcbx_pg_params *ets = &(bp->dcbx_port_params.ets);
+ struct bnx2x_ets_params ets_params = { 0 };
+ u8 i;
+
+ ets_params.num_of_cos = ets->num_of_cos;
+
+ for (i = 0; i < ets->num_of_cos; i++) {
+ /* COS is SP */
+ if (ets->cos_params[i].strict != BNX2X_DCBX_STRICT_INVALID) {
+ if (ets->cos_params[i].bw_tbl != DCBX_INVALID_COS_BW) {
+ BNX2X_ERR("COS can't be not BW and not SP\n");
+ return;
+ }
+
+ ets_params.cos[i].state = bnx2x_cos_state_strict;
+ ets_params.cos[i].params.sp_params.pri =
+ ets->cos_params[i].strict;
+ } else { /* COS is BW */
+ if (ets->cos_params[i].bw_tbl == DCBX_INVALID_COS_BW) {
+ BNX2X_ERR("COS can't be not BW and not SP\n");
+ return;
+ }
+ ets_params.cos[i].state = bnx2x_cos_state_bw;
+ ets_params.cos[i].params.bw_params.bw =
+ (u8)ets->cos_params[i].bw_tbl;
+ }
+ }
+
+ /* Configure the ETS in HW */
+ if (bnx2x_ets_e3b0_config(&bp->link_params, &bp->link_vars,
+ &ets_params)) {
+ BNX2X_ERR("bnx2x_ets_e3b0_config failed\n");
+ bnx2x_ets_disabled(&bp->link_params, &bp->link_vars);
+ }
+}
+
+static void bnx2x_dcbx_update_ets_params(struct bnx2x *bp)
+{
+ bnx2x_ets_disabled(&bp->link_params, &bp->link_vars);
+
+ if (!bp->dcbx_port_params.ets.enabled ||
+ (bp->dcbx_error & DCBX_REMOTE_MIB_ERROR))
+ return;
+
+ if (CHIP_IS_E3B0(bp))
+ bnx2x_dcbx_update_ets_config(bp);
+ else
+ bnx2x_dcbx_2cos_limit_update_ets_config(bp);
+}
+
+#ifdef BCM_DCBNL
+static int bnx2x_dcbx_read_shmem_remote_mib(struct bnx2x *bp)
+{
+ struct lldp_remote_mib remote_mib = {0};
+ u32 dcbx_remote_mib_offset = SHMEM2_RD(bp, dcbx_remote_mib_offset);
+ int rc;
+
+ DP(NETIF_MSG_LINK, "dcbx_remote_mib_offset 0x%x\n",
+ dcbx_remote_mib_offset);
+
+ if (SHMEM_DCBX_REMOTE_MIB_NONE == dcbx_remote_mib_offset) {
+ BNX2X_ERR("FW doesn't support dcbx_remote_mib_offset\n");
+ return -EINVAL;
+ }
+
+ rc = bnx2x_dcbx_read_mib(bp, (u32 *)&remote_mib, dcbx_remote_mib_offset,
+ DCBX_READ_REMOTE_MIB);
+
+ if (rc) {
+ BNX2X_ERR("Faild to read remote mib from FW\n");
+ return rc;
+ }
+
+ /* save features and flags */
+ bp->dcbx_remote_feat = remote_mib.features;
+ bp->dcbx_remote_flags = remote_mib.flags;
+ return 0;
+}
+#endif
+
+static int bnx2x_dcbx_read_shmem_neg_results(struct bnx2x *bp)
+{
+ struct lldp_local_mib local_mib = {0};
+ u32 dcbx_neg_res_offset = SHMEM2_RD(bp, dcbx_neg_res_offset);
+ int rc;
+
+ DP(NETIF_MSG_LINK, "dcbx_neg_res_offset 0x%x\n", dcbx_neg_res_offset);
+
+ if (SHMEM_DCBX_NEG_RES_NONE == dcbx_neg_res_offset) {
+ BNX2X_ERR("FW doesn't support dcbx_neg_res_offset\n");
+ return -EINVAL;
+ }
+
+ rc = bnx2x_dcbx_read_mib(bp, (u32 *)&local_mib, dcbx_neg_res_offset,
+ DCBX_READ_LOCAL_MIB);
+
+ if (rc) {
+ BNX2X_ERR("Faild to read local mib from FW\n");
+ return rc;
+ }
+
+ /* save features and error */
+ bp->dcbx_local_feat = local_mib.features;
+ bp->dcbx_error = local_mib.error;
+ return 0;
+}
+
+
+#ifdef BCM_DCBNL
+static inline
+u8 bnx2x_dcbx_dcbnl_app_up(struct dcbx_app_priority_entry *ent)
+{
+ u8 pri;
+
+ /* Choose the highest priority */
+ for (pri = MAX_PFC_PRIORITIES - 1; pri > 0; pri--)
+ if (ent->pri_bitmap & (1 << pri))
+ break;
+ return pri;
+}
+
+static inline
+u8 bnx2x_dcbx_dcbnl_app_idtype(struct dcbx_app_priority_entry *ent)
+{
+ return ((ent->appBitfield & DCBX_APP_ENTRY_SF_MASK) ==
+ DCBX_APP_SF_PORT) ? DCB_APP_IDTYPE_PORTNUM :
+ DCB_APP_IDTYPE_ETHTYPE;
+}
+
+int bnx2x_dcbnl_update_applist(struct bnx2x *bp, bool delall)
+{
+ int i, err = 0;
+
+ for (i = 0; i < DCBX_MAX_APP_PROTOCOL && err == 0; i++) {
+ struct dcbx_app_priority_entry *ent =
+ &bp->dcbx_local_feat.app.app_pri_tbl[i];
+
+ if (ent->appBitfield & DCBX_APP_ENTRY_VALID) {
+ u8 up = bnx2x_dcbx_dcbnl_app_up(ent);
+
+ /* avoid invalid user-priority */
+ if (up) {
+ struct dcb_app app;
+ app.selector = bnx2x_dcbx_dcbnl_app_idtype(ent);
+ app.protocol = ent->app_id;
+ app.priority = delall ? 0 : up;
+ err = dcb_setapp(bp->dev, &app);
+ }
+ }
+ }
+ return err;
+}
+#endif
+
+static inline void bnx2x_update_drv_flags(struct bnx2x *bp, u32 flags, u32 set)
+{
+ if (SHMEM2_HAS(bp, drv_flags)) {
+ u32 drv_flags;
+ bnx2x_acquire_hw_lock(bp, HW_LOCK_DRV_FLAGS);
+ drv_flags = SHMEM2_RD(bp, drv_flags);
+
+ if (set)
+ SET_FLAGS(drv_flags, flags);
+ else
+ RESET_FLAGS(drv_flags, flags);
+
+ SHMEM2_WR(bp, drv_flags, drv_flags);
+ DP(NETIF_MSG_HW, "drv_flags 0x%08x\n", drv_flags);
+ bnx2x_release_hw_lock(bp, HW_LOCK_DRV_FLAGS);
+ }
+}
+
+static inline void bnx2x_dcbx_update_tc_mapping(struct bnx2x *bp)
+{
+ u8 prio, cos;
+ for (cos = 0; cos < bp->dcbx_port_params.ets.num_of_cos; cos++) {
+ for (prio = 0; prio < BNX2X_MAX_PRIORITY; prio++) {
+ if (bp->dcbx_port_params.ets.cos_params[cos].pri_bitmask
+ & (1 << prio)) {
+ bp->prio_to_cos[prio] = cos;
+ DP(NETIF_MSG_LINK,
+ "tx_mapping %d --> %d\n", prio, cos);
+ }
+ }
+ }
+
+ /* setup tc must be called under rtnl lock, but we can't take it here
+ * as we are handling an attetntion on a work queue which must be
+ * flushed at some rtnl-locked contexts (e.g. if down)
+ */
+ if (!test_and_set_bit(BNX2X_SP_RTNL_SETUP_TC, &bp->sp_rtnl_state))
+ schedule_delayed_work(&bp->sp_rtnl_task, 0);
+}
+
+void bnx2x_dcbx_set_params(struct bnx2x *bp, u32 state)
+{
+ switch (state) {
+ case BNX2X_DCBX_STATE_NEG_RECEIVED:
+ {
+ DP(NETIF_MSG_LINK, "BNX2X_DCBX_STATE_NEG_RECEIVED\n");
+#ifdef BCM_DCBNL
+ /**
+ * Delete app tlvs from dcbnl before reading new
+ * negotiation results
+ */
+ bnx2x_dcbnl_update_applist(bp, true);
+
+ /* Read rmeote mib if dcbx is in the FW */
+ if (bnx2x_dcbx_read_shmem_remote_mib(bp))
+ return;
+#endif
+ /* Read neg results if dcbx is in the FW */
+ if (bnx2x_dcbx_read_shmem_neg_results(bp))
+ return;
+
+ bnx2x_dump_dcbx_drv_param(bp, &bp->dcbx_local_feat,
+ bp->dcbx_error);
+
+ bnx2x_get_dcbx_drv_param(bp, &bp->dcbx_local_feat,
+ bp->dcbx_error);
+
+ /* mark DCBX result for PMF migration */
+ bnx2x_update_drv_flags(bp, DRV_FLAGS_DCB_CONFIGURED, 1);
+#ifdef BCM_DCBNL
+ /**
+ * Add new app tlvs to dcbnl
+ */
+ bnx2x_dcbnl_update_applist(bp, false);
+#endif
+ bnx2x_dcbx_stop_hw_tx(bp);
+
+ /* reconfigure the netdevice with the results of the new
+ * dcbx negotiation.
+ */
+ bnx2x_dcbx_update_tc_mapping(bp);
+
+ return;
+ }
+ case BNX2X_DCBX_STATE_TX_PAUSED:
+ DP(NETIF_MSG_LINK, "BNX2X_DCBX_STATE_TX_PAUSED\n");
+ bnx2x_pfc_set_pfc(bp);
+
+ bnx2x_dcbx_update_ets_params(bp);
+ bnx2x_dcbx_resume_hw_tx(bp);
+ return;
+ case BNX2X_DCBX_STATE_TX_RELEASED:
+ DP(NETIF_MSG_LINK, "BNX2X_DCBX_STATE_TX_RELEASED\n");
+ bnx2x_fw_command(bp, DRV_MSG_CODE_DCBX_PMF_DRV_OK, 0);
+#ifdef BCM_DCBNL
+ /*
+ * Send a notification for the new negotiated parameters
+ */
+ dcbnl_cee_notify(bp->dev, RTM_GETDCB, DCB_CMD_CEE_GET, 0, 0);
+#endif
+ return;
+ default:
+ BNX2X_ERR("Unknown DCBX_STATE\n");
+ }
+}
+
+#define LLDP_ADMIN_MIB_OFFSET(bp) (PORT_MAX*sizeof(struct lldp_params) + \
+ BP_PORT(bp)*sizeof(struct lldp_admin_mib))
+
+static void bnx2x_dcbx_admin_mib_updated_params(struct bnx2x *bp,
+ u32 dcbx_lldp_params_offset)
+{
+ struct lldp_admin_mib admin_mib;
+ u32 i, other_traf_type = PREDEFINED_APP_IDX_MAX, traf_type = 0;
+ u32 offset = dcbx_lldp_params_offset + LLDP_ADMIN_MIB_OFFSET(bp);
+
+ /*shortcuts*/
+ struct dcbx_features *af = &admin_mib.features;
+ struct bnx2x_config_dcbx_params *dp = &bp->dcbx_config_params;
+
+ memset(&admin_mib, 0, sizeof(struct lldp_admin_mib));
+
+ /* Read the data first */
+ bnx2x_read_data(bp, (u32 *)&admin_mib, offset,
+ sizeof(struct lldp_admin_mib));
+
+ if (bp->dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_ON)
+ SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_DCBX_ENABLED);
+ else
+ RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_DCBX_ENABLED);
+
+ if (dp->overwrite_settings == BNX2X_DCBX_OVERWRITE_SETTINGS_ENABLE) {
+
+ RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_CEE_VERSION_MASK);
+ admin_mib.ver_cfg_flags |=
+ (dp->admin_dcbx_version << DCBX_CEE_VERSION_SHIFT) &
+ DCBX_CEE_VERSION_MASK;
+
+ af->ets.enabled = (u8)dp->admin_ets_enable;
+
+ af->pfc.enabled = (u8)dp->admin_pfc_enable;
+
+ /* FOR IEEE dp->admin_tc_supported_tx_enable */
+ if (dp->admin_ets_configuration_tx_enable)
+ SET_FLAGS(admin_mib.ver_cfg_flags,
+ DCBX_ETS_CONFIG_TX_ENABLED);
+ else
+ RESET_FLAGS(admin_mib.ver_cfg_flags,
+ DCBX_ETS_CONFIG_TX_ENABLED);
+ /* For IEEE admin_ets_recommendation_tx_enable */
+ if (dp->admin_pfc_tx_enable)
+ SET_FLAGS(admin_mib.ver_cfg_flags,
+ DCBX_PFC_CONFIG_TX_ENABLED);
+ else
+ RESET_FLAGS(admin_mib.ver_cfg_flags,
+ DCBX_PFC_CONFIG_TX_ENABLED);
+
+ if (dp->admin_application_priority_tx_enable)
+ SET_FLAGS(admin_mib.ver_cfg_flags,
+ DCBX_APP_CONFIG_TX_ENABLED);
+ else
+ RESET_FLAGS(admin_mib.ver_cfg_flags,
+ DCBX_APP_CONFIG_TX_ENABLED);
+
+ if (dp->admin_ets_willing)
+ SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_ETS_WILLING);
+ else
+ RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_ETS_WILLING);
+ /* For IEEE admin_ets_reco_valid */
+ if (dp->admin_pfc_willing)
+ SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_PFC_WILLING);
+ else
+ RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_PFC_WILLING);
+
+ if (dp->admin_app_priority_willing)
+ SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_APP_WILLING);
+ else
+ RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_APP_WILLING);
+
+ for (i = 0 ; i < DCBX_MAX_NUM_PG_BW_ENTRIES; i++) {
+ DCBX_PG_BW_SET(af->ets.pg_bw_tbl, i,
+ (u8)dp->admin_configuration_bw_precentage[i]);
+
+ DP(NETIF_MSG_LINK, "pg_bw_tbl[%d] = %02x\n",
+ i, DCBX_PG_BW_GET(af->ets.pg_bw_tbl, i));
+ }
+
+ for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES; i++) {
+ DCBX_PRI_PG_SET(af->ets.pri_pg_tbl, i,
+ (u8)dp->admin_configuration_ets_pg[i]);
+
+ DP(NETIF_MSG_LINK, "pri_pg_tbl[%d] = %02x\n",
+ i, DCBX_PRI_PG_GET(af->ets.pri_pg_tbl, i));
+ }
+
+ /*For IEEE admin_recommendation_bw_precentage
+ *For IEEE admin_recommendation_ets_pg */
+ af->pfc.pri_en_bitmap = (u8)dp->admin_pfc_bitmap;
+ for (i = 0; i < 4; i++) {
+ if (dp->admin_priority_app_table[i].valid) {
+ struct bnx2x_admin_priority_app_table *table =
+ dp->admin_priority_app_table;
+ if ((ETH_TYPE_FCOE == table[i].app_id) &&
+ (TRAFFIC_TYPE_ETH == table[i].traffic_type))
+ traf_type = FCOE_APP_IDX;
+ else if ((TCP_PORT_ISCSI == table[i].app_id) &&
+ (TRAFFIC_TYPE_PORT == table[i].traffic_type))
+ traf_type = ISCSI_APP_IDX;
+ else
+ traf_type = other_traf_type++;
+
+ af->app.app_pri_tbl[traf_type].app_id =
+ table[i].app_id;
+
+ af->app.app_pri_tbl[traf_type].pri_bitmap =
+ (u8)(1 << table[i].priority);
+
+ af->app.app_pri_tbl[traf_type].appBitfield =
+ (DCBX_APP_ENTRY_VALID);
+
+ af->app.app_pri_tbl[traf_type].appBitfield |=
+ (TRAFFIC_TYPE_ETH == table[i].traffic_type) ?
+ DCBX_APP_SF_ETH_TYPE : DCBX_APP_SF_PORT;
+ }
+ }
+
+ af->app.default_pri = (u8)dp->admin_default_priority;
+
+ }
+
+ /* Write the data. */
+ bnx2x_write_data(bp, (u32 *)&admin_mib, offset,
+ sizeof(struct lldp_admin_mib));
+
+}
+
+void bnx2x_dcbx_set_state(struct bnx2x *bp, bool dcb_on, u32 dcbx_enabled)
+{
++ if (!CHIP_IS_E1x(bp) && !CHIP_IS_E3(bp)) {
+ bp->dcb_state = dcb_on;
+ bp->dcbx_enabled = dcbx_enabled;
+ } else {
+ bp->dcb_state = false;
+ bp->dcbx_enabled = BNX2X_DCBX_ENABLED_INVALID;
+ }
+ DP(NETIF_MSG_LINK, "DCB state [%s:%s]\n",
+ dcb_on ? "ON" : "OFF",
+ dcbx_enabled == BNX2X_DCBX_ENABLED_OFF ? "user-mode" :
+ dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_OFF ? "on-chip static" :
+ dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_ON ?
+ "on-chip with negotiation" : "invalid");
+}
+
+void bnx2x_dcbx_init_params(struct bnx2x *bp)
+{
+ bp->dcbx_config_params.admin_dcbx_version = 0x0; /* 0 - CEE; 1 - IEEE */
+ bp->dcbx_config_params.admin_ets_willing = 1;
+ bp->dcbx_config_params.admin_pfc_willing = 1;
+ bp->dcbx_config_params.overwrite_settings = 1;
+ bp->dcbx_config_params.admin_ets_enable = 1;
+ bp->dcbx_config_params.admin_pfc_enable = 1;
+ bp->dcbx_config_params.admin_tc_supported_tx_enable = 1;
+ bp->dcbx_config_params.admin_ets_configuration_tx_enable = 1;
+ bp->dcbx_config_params.admin_pfc_tx_enable = 1;
+ bp->dcbx_config_params.admin_application_priority_tx_enable = 1;
+ bp->dcbx_config_params.admin_ets_reco_valid = 1;
+ bp->dcbx_config_params.admin_app_priority_willing = 1;
+ bp->dcbx_config_params.admin_configuration_bw_precentage[0] = 00;
+ bp->dcbx_config_params.admin_configuration_bw_precentage[1] = 50;
+ bp->dcbx_config_params.admin_configuration_bw_precentage[2] = 50;
+ bp->dcbx_config_params.admin_configuration_bw_precentage[3] = 0;
+ bp->dcbx_config_params.admin_configuration_bw_precentage[4] = 0;
+ bp->dcbx_config_params.admin_configuration_bw_precentage[5] = 0;
+ bp->dcbx_config_params.admin_configuration_bw_precentage[6] = 0;
+ bp->dcbx_config_params.admin_configuration_bw_precentage[7] = 0;
+ bp->dcbx_config_params.admin_configuration_ets_pg[0] = 1;
+ bp->dcbx_config_params.admin_configuration_ets_pg[1] = 0;
+ bp->dcbx_config_params.admin_configuration_ets_pg[2] = 0;
+ bp->dcbx_config_params.admin_configuration_ets_pg[3] = 2;
+ bp->dcbx_config_params.admin_configuration_ets_pg[4] = 0;
+ bp->dcbx_config_params.admin_configuration_ets_pg[5] = 0;
+ bp->dcbx_config_params.admin_configuration_ets_pg[6] = 0;
+ bp->dcbx_config_params.admin_configuration_ets_pg[7] = 0;
+ bp->dcbx_config_params.admin_recommendation_bw_precentage[0] = 0;
+ bp->dcbx_config_params.admin_recommendation_bw_precentage[1] = 1;
+ bp->dcbx_config_params.admin_recommendation_bw_precentage[2] = 2;
+ bp->dcbx_config_params.admin_recommendation_bw_precentage[3] = 0;
+ bp->dcbx_config_params.admin_recommendation_bw_precentage[4] = 7;
+ bp->dcbx_config_params.admin_recommendation_bw_precentage[5] = 5;
+ bp->dcbx_config_params.admin_recommendation_bw_precentage[6] = 6;
+ bp->dcbx_config_params.admin_recommendation_bw_precentage[7] = 7;
+ bp->dcbx_config_params.admin_recommendation_ets_pg[0] = 0;
+ bp->dcbx_config_params.admin_recommendation_ets_pg[1] = 1;
+ bp->dcbx_config_params.admin_recommendation_ets_pg[2] = 2;
+ bp->dcbx_config_params.admin_recommendation_ets_pg[3] = 3;
+ bp->dcbx_config_params.admin_recommendation_ets_pg[4] = 4;
+ bp->dcbx_config_params.admin_recommendation_ets_pg[5] = 5;
+ bp->dcbx_config_params.admin_recommendation_ets_pg[6] = 6;
+ bp->dcbx_config_params.admin_recommendation_ets_pg[7] = 7;
+ bp->dcbx_config_params.admin_pfc_bitmap = 0x8; /* FCoE(3) enable */
+ bp->dcbx_config_params.admin_priority_app_table[0].valid = 1;
+ bp->dcbx_config_params.admin_priority_app_table[1].valid = 1;
+ bp->dcbx_config_params.admin_priority_app_table[2].valid = 0;
+ bp->dcbx_config_params.admin_priority_app_table[3].valid = 0;
+ bp->dcbx_config_params.admin_priority_app_table[0].priority = 3;
+ bp->dcbx_config_params.admin_priority_app_table[1].priority = 0;
+ bp->dcbx_config_params.admin_priority_app_table[2].priority = 0;
+ bp->dcbx_config_params.admin_priority_app_table[3].priority = 0;
+ bp->dcbx_config_params.admin_priority_app_table[0].traffic_type = 0;
+ bp->dcbx_config_params.admin_priority_app_table[1].traffic_type = 1;
+ bp->dcbx_config_params.admin_priority_app_table[2].traffic_type = 0;
+ bp->dcbx_config_params.admin_priority_app_table[3].traffic_type = 0;
+ bp->dcbx_config_params.admin_priority_app_table[0].app_id = 0x8906;
+ bp->dcbx_config_params.admin_priority_app_table[1].app_id = 3260;
+ bp->dcbx_config_params.admin_priority_app_table[2].app_id = 0;
+ bp->dcbx_config_params.admin_priority_app_table[3].app_id = 0;
+ bp->dcbx_config_params.admin_default_priority =
+ bp->dcbx_config_params.admin_priority_app_table[1].priority;
+}
+
+void bnx2x_dcbx_init(struct bnx2x *bp)
+{
+ u32 dcbx_lldp_params_offset = SHMEM_LLDP_DCBX_PARAMS_NONE;
+
+ if (bp->dcbx_enabled <= 0)
+ return;
+
+ /* validate:
+ * chip of good for dcbx version,
+ * dcb is wanted
+ * the function is pmf
+ * shmem2 contains DCBX support fields
+ */
+ DP(NETIF_MSG_LINK, "dcb_state %d bp->port.pmf %d\n",
+ bp->dcb_state, bp->port.pmf);
+
+ if (bp->dcb_state == BNX2X_DCB_STATE_ON && bp->port.pmf &&
+ SHMEM2_HAS(bp, dcbx_lldp_params_offset)) {
+ dcbx_lldp_params_offset =
+ SHMEM2_RD(bp, dcbx_lldp_params_offset);
+
+ DP(NETIF_MSG_LINK, "dcbx_lldp_params_offset 0x%x\n",
+ dcbx_lldp_params_offset);
+
+ bnx2x_update_drv_flags(bp, DRV_FLAGS_DCB_CONFIGURED, 0);
+
+ if (SHMEM_LLDP_DCBX_PARAMS_NONE != dcbx_lldp_params_offset) {
+ bnx2x_dcbx_admin_mib_updated_params(bp,
+ dcbx_lldp_params_offset);
+
+ /* Let HW start negotiation */
+ bnx2x_fw_command(bp,
+ DRV_MSG_CODE_DCBX_ADMIN_PMF_MSG, 0);
+ }
+ }
+}
+static void
+bnx2x_dcbx_print_cos_params(struct bnx2x *bp,
+ struct bnx2x_func_tx_start_params *pfc_fw_cfg)
+{
+ u8 pri = 0;
+ u8 cos = 0;
+
+ DP(NETIF_MSG_LINK,
+ "pfc_fw_cfg->dcb_version %x\n", pfc_fw_cfg->dcb_version);
+ DP(NETIF_MSG_LINK,
+ "pdev->params.dcbx_port_params.pfc."
+ "priority_non_pauseable_mask %x\n",
+ bp->dcbx_port_params.pfc.priority_non_pauseable_mask);
+
+ for (cos = 0 ; cos < bp->dcbx_port_params.ets.num_of_cos ; cos++) {
+ DP(NETIF_MSG_LINK, "pdev->params.dcbx_port_params.ets."
+ "cos_params[%d].pri_bitmask %x\n", cos,
+ bp->dcbx_port_params.ets.cos_params[cos].pri_bitmask);
+
+ DP(NETIF_MSG_LINK, "pdev->params.dcbx_port_params.ets."
+ "cos_params[%d].bw_tbl %x\n", cos,
+ bp->dcbx_port_params.ets.cos_params[cos].bw_tbl);
+
+ DP(NETIF_MSG_LINK, "pdev->params.dcbx_port_params.ets."
+ "cos_params[%d].strict %x\n", cos,
+ bp->dcbx_port_params.ets.cos_params[cos].strict);
+
+ DP(NETIF_MSG_LINK, "pdev->params.dcbx_port_params.ets."
+ "cos_params[%d].pauseable %x\n", cos,
+ bp->dcbx_port_params.ets.cos_params[cos].pauseable);
+ }
+
+ for (pri = 0; pri < LLFC_DRIVER_TRAFFIC_TYPE_MAX; pri++) {
+ DP(NETIF_MSG_LINK,
+ "pfc_fw_cfg->traffic_type_to_priority_cos[%d]."
+ "priority %x\n", pri,
+ pfc_fw_cfg->traffic_type_to_priority_cos[pri].priority);
+
+ DP(NETIF_MSG_LINK,
+ "pfc_fw_cfg->traffic_type_to_priority_cos[%d].cos %x\n",
+ pri, pfc_fw_cfg->traffic_type_to_priority_cos[pri].cos);
+ }
+}
+
+/* fills help_data according to pg_info */
+static void bnx2x_dcbx_get_num_pg_traf_type(struct bnx2x *bp,
+ u32 *pg_pri_orginal_spread,
+ struct pg_help_data *help_data)
+{
+ bool pg_found = false;
+ u32 i, traf_type, add_traf_type, add_pg;
+ u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
+ struct pg_entry_help_data *data = help_data->data; /*shotcut*/
+
+ /* Set to invalid */
+ for (i = 0; i < LLFC_DRIVER_TRAFFIC_TYPE_MAX; i++)
+ data[i].pg = DCBX_ILLEGAL_PG;
+
+ for (add_traf_type = 0;
+ add_traf_type < LLFC_DRIVER_TRAFFIC_TYPE_MAX; add_traf_type++) {
+ pg_found = false;
+ if (ttp[add_traf_type] < MAX_PFC_PRIORITIES) {
+ add_pg = (u8)pg_pri_orginal_spread[ttp[add_traf_type]];
+ for (traf_type = 0;
+ traf_type < LLFC_DRIVER_TRAFFIC_TYPE_MAX;
+ traf_type++) {
+ if (data[traf_type].pg == add_pg) {
+ if (!(data[traf_type].pg_priority &
+ (1 << ttp[add_traf_type])))
+ data[traf_type].
+ num_of_dif_pri++;
+ data[traf_type].pg_priority |=
+ (1 << ttp[add_traf_type]);
+ pg_found = true;
+ break;
+ }
+ }
+ if (false == pg_found) {
+ data[help_data->num_of_pg].pg = add_pg;
+ data[help_data->num_of_pg].pg_priority =
+ (1 << ttp[add_traf_type]);
+ data[help_data->num_of_pg].num_of_dif_pri = 1;
+ help_data->num_of_pg++;
+ }
+ }
+ DP(NETIF_MSG_LINK,
+ "add_traf_type %d pg_found %s num_of_pg %d\n",
+ add_traf_type, (false == pg_found) ? "NO" : "YES",
+ help_data->num_of_pg);
+ }
+}
+
+static void bnx2x_dcbx_ets_disabled_entry_data(struct bnx2x *bp,
+ struct cos_help_data *cos_data,
+ u32 pri_join_mask)
+{
+ /* Only one priority than only one COS */
+ cos_data->data[0].pausable =
+ IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask);
+ cos_data->data[0].pri_join_mask = pri_join_mask;
+ cos_data->data[0].cos_bw = 100;
+ cos_data->num_of_cos = 1;
+}
+
+static inline void bnx2x_dcbx_add_to_cos_bw(struct bnx2x *bp,
+ struct cos_entry_help_data *data,
+ u8 pg_bw)
+{
+ if (data->cos_bw == DCBX_INVALID_COS_BW)
+ data->cos_bw = pg_bw;
+ else
+ data->cos_bw += pg_bw;
+}
+
+static void bnx2x_dcbx_separate_pauseable_from_non(struct bnx2x *bp,
+ struct cos_help_data *cos_data,
+ u32 *pg_pri_orginal_spread,
+ struct dcbx_ets_feature *ets)
+{
+ u32 pri_tested = 0;
+ u8 i = 0;
+ u8 entry = 0;
+ u8 pg_entry = 0;
+ u8 num_of_pri = LLFC_DRIVER_TRAFFIC_TYPE_MAX;
+
+ cos_data->data[0].pausable = true;
+ cos_data->data[1].pausable = false;
+ cos_data->data[0].pri_join_mask = cos_data->data[1].pri_join_mask = 0;
+
+ for (i = 0 ; i < num_of_pri ; i++) {
+ pri_tested = 1 << bp->dcbx_port_params.
+ app.traffic_type_priority[i];
+
+ if (pri_tested & DCBX_PFC_PRI_NON_PAUSE_MASK(bp)) {
+ cos_data->data[1].pri_join_mask |= pri_tested;
+ entry = 1;
+ } else {
+ cos_data->data[0].pri_join_mask |= pri_tested;
+ entry = 0;
+ }
+ pg_entry = (u8)pg_pri_orginal_spread[bp->dcbx_port_params.
+ app.traffic_type_priority[i]];
+ /* There can be only one strict pg */
+ if (pg_entry < DCBX_MAX_NUM_PG_BW_ENTRIES)
+ bnx2x_dcbx_add_to_cos_bw(bp, &cos_data->data[entry],
+ DCBX_PG_BW_GET(ets->pg_bw_tbl, pg_entry));
+ else
+ /* If we join a group and one is strict
+ * than the bw rulls */
+ cos_data->data[entry].strict =
+ BNX2X_DCBX_STRICT_COS_HIGHEST;
+ }
+ if ((0 == cos_data->data[0].pri_join_mask) &&
+ (0 == cos_data->data[1].pri_join_mask))
+ BNX2X_ERR("dcbx error: Both groups must have priorities\n");
+}
+
+
+#ifndef POWER_OF_2
+#define POWER_OF_2(x) ((0 != x) && (0 == (x & (x-1))))
+#endif
+
+static void bnx2x_dcbx_2cos_limit_cee_single_pg_to_cos_params(struct bnx2x *bp,
+ struct pg_help_data *pg_help_data,
+ struct cos_help_data *cos_data,
+ u32 pri_join_mask,
+ u8 num_of_dif_pri)
+{
+ u8 i = 0;
+ u32 pri_tested = 0;
+ u32 pri_mask_without_pri = 0;
+ u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
+ /*debug*/
+ if (num_of_dif_pri == 1) {
+ bnx2x_dcbx_ets_disabled_entry_data(bp, cos_data, pri_join_mask);
+ return;
+ }
+ /* single priority group */
+ if (pg_help_data->data[0].pg < DCBX_MAX_NUM_PG_BW_ENTRIES) {
+ /* If there are both pauseable and non-pauseable priorities,
+ * the pauseable priorities go to the first queue and
+ * the non-pauseable priorities go to the second queue.
+ */
+ if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask)) {
+ /* Pauseable */
+ cos_data->data[0].pausable = true;
+ /* Non pauseable.*/
+ cos_data->data[1].pausable = false;
+
+ if (2 == num_of_dif_pri) {
+ cos_data->data[0].cos_bw = 50;
+ cos_data->data[1].cos_bw = 50;
+ }
+
+ if (3 == num_of_dif_pri) {
+ if (POWER_OF_2(DCBX_PFC_PRI_GET_PAUSE(bp,
+ pri_join_mask))) {
+ cos_data->data[0].cos_bw = 33;
+ cos_data->data[1].cos_bw = 67;
+ } else {
+ cos_data->data[0].cos_bw = 67;
+ cos_data->data[1].cos_bw = 33;
+ }
+ }
+
+ } else if (IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask)) {
+ /* If there are only pauseable priorities,
+ * then one/two priorities go to the first queue
+ * and one priority goes to the second queue.
+ */
+ if (2 == num_of_dif_pri) {
+ cos_data->data[0].cos_bw = 50;
+ cos_data->data[1].cos_bw = 50;
+ } else {
+ cos_data->data[0].cos_bw = 67;
+ cos_data->data[1].cos_bw = 33;
+ }
+ cos_data->data[1].pausable = true;
+ cos_data->data[0].pausable = true;
+ /* All priorities except FCOE */
+ cos_data->data[0].pri_join_mask = (pri_join_mask &
+ ((u8)~(1 << ttp[LLFC_TRAFFIC_TYPE_FCOE])));
+ /* Only FCOE priority.*/
+ cos_data->data[1].pri_join_mask =
+ (1 << ttp[LLFC_TRAFFIC_TYPE_FCOE]);
+ } else
+ /* If there are only non-pauseable priorities,
+ * they will all go to the same queue.
+ */
+ bnx2x_dcbx_ets_disabled_entry_data(bp,
+ cos_data, pri_join_mask);
+ } else {
+ /* priority group which is not BW limited (PG#15):*/
+ if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask)) {
+ /* If there are both pauseable and non-pauseable
+ * priorities, the pauseable priorities go to the first
+ * queue and the non-pauseable priorities
+ * go to the second queue.
+ */
+ if (DCBX_PFC_PRI_GET_PAUSE(bp, pri_join_mask) >
+ DCBX_PFC_PRI_GET_NON_PAUSE(bp, pri_join_mask)) {
+ cos_data->data[0].strict =
+ BNX2X_DCBX_STRICT_COS_HIGHEST;
+ cos_data->data[1].strict =
+ BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI(
+ BNX2X_DCBX_STRICT_COS_HIGHEST);
+ } else {
+ cos_data->data[0].strict =
+ BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI(
+ BNX2X_DCBX_STRICT_COS_HIGHEST);
+ cos_data->data[1].strict =
+ BNX2X_DCBX_STRICT_COS_HIGHEST;
+ }
+ /* Pauseable */
+ cos_data->data[0].pausable = true;
+ /* Non pause-able.*/
+ cos_data->data[1].pausable = false;
+ } else {
+ /* If there are only pauseable priorities or
+ * only non-pauseable,* the lower priorities go
+ * to the first queue and the higherpriorities go
+ * to the second queue.
+ */
+ cos_data->data[0].pausable =
+ cos_data->data[1].pausable =
+ IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask);
+
+ for (i = 0 ; i < LLFC_DRIVER_TRAFFIC_TYPE_MAX; i++) {
+ pri_tested = 1 << bp->dcbx_port_params.
+ app.traffic_type_priority[i];
+ /* Remove priority tested */
+ pri_mask_without_pri =
+ (pri_join_mask & ((u8)(~pri_tested)));
+ if (pri_mask_without_pri < pri_tested)
+ break;
+ }
+
+ if (i == LLFC_DRIVER_TRAFFIC_TYPE_MAX)
+ BNX2X_ERR("Invalid value for pri_join_mask -"
+ " could not find a priority\n");
+
+ cos_data->data[0].pri_join_mask = pri_mask_without_pri;
+ cos_data->data[1].pri_join_mask = pri_tested;
+ /* Both queues are strict priority,
+ * and that with the highest priority
+ * gets the highest strict priority in the arbiter.
+ */
+ cos_data->data[0].strict =
+ BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI(
+ BNX2X_DCBX_STRICT_COS_HIGHEST);
+ cos_data->data[1].strict =
+ BNX2X_DCBX_STRICT_COS_HIGHEST;
+ }
+ }
+}
+
+static void bnx2x_dcbx_2cos_limit_cee_two_pg_to_cos_params(
+ struct bnx2x *bp,
+ struct pg_help_data *pg_help_data,
+ struct dcbx_ets_feature *ets,
+ struct cos_help_data *cos_data,
+ u32 *pg_pri_orginal_spread,
+ u32 pri_join_mask,
+ u8 num_of_dif_pri)
+{
+ u8 i = 0;
+ u8 pg[DCBX_COS_MAX_NUM_E2] = { 0 };
+
+ /* If there are both pauseable and non-pauseable priorities,
+ * the pauseable priorities go to the first queue and
+ * the non-pauseable priorities go to the second queue.
+ */
+ if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask)) {
+ if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp,
+ pg_help_data->data[0].pg_priority) ||
+ IS_DCBX_PFC_PRI_MIX_PAUSE(bp,
+ pg_help_data->data[1].pg_priority)) {
+ /* If one PG contains both pauseable and
+ * non-pauseable priorities then ETS is disabled.
+ */
+ bnx2x_dcbx_separate_pauseable_from_non(bp, cos_data,
+ pg_pri_orginal_spread, ets);
+ bp->dcbx_port_params.ets.enabled = false;
+ return;
+ }
+
+ /* Pauseable */
+ cos_data->data[0].pausable = true;
+ /* Non pauseable. */
+ cos_data->data[1].pausable = false;
+ if (IS_DCBX_PFC_PRI_ONLY_PAUSE(bp,
+ pg_help_data->data[0].pg_priority)) {
+ /* 0 is pauseable */
+ cos_data->data[0].pri_join_mask =
+ pg_help_data->data[0].pg_priority;
+ pg[0] = pg_help_data->data[0].pg;
+ cos_data->data[1].pri_join_mask =
+ pg_help_data->data[1].pg_priority;
+ pg[1] = pg_help_data->data[1].pg;
+ } else {/* 1 is pauseable */
+ cos_data->data[0].pri_join_mask =
+ pg_help_data->data[1].pg_priority;
+ pg[0] = pg_help_data->data[1].pg;
+ cos_data->data[1].pri_join_mask =
+ pg_help_data->data[0].pg_priority;
+ pg[1] = pg_help_data->data[0].pg;
+ }
+ } else {
+ /* If there are only pauseable priorities or
+ * only non-pauseable, each PG goes to a queue.
+ */
+ cos_data->data[0].pausable = cos_data->data[1].pausable =
+ IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask);
+ cos_data->data[0].pri_join_mask =
+ pg_help_data->data[0].pg_priority;
+ pg[0] = pg_help_data->data[0].pg;
+ cos_data->data[1].pri_join_mask =
+ pg_help_data->data[1].pg_priority;
+ pg[1] = pg_help_data->data[1].pg;
+ }
+
+ /* There can be only one strict pg */
+ for (i = 0 ; i < ARRAY_SIZE(pg); i++) {
+ if (pg[i] < DCBX_MAX_NUM_PG_BW_ENTRIES)
+ cos_data->data[i].cos_bw =
+ DCBX_PG_BW_GET(ets->pg_bw_tbl, pg[i]);
+ else
+ cos_data->data[i].strict =
+ BNX2X_DCBX_STRICT_COS_HIGHEST;
+ }
+}
+
+static int bnx2x_dcbx_join_pgs(
+ struct bnx2x *bp,
+ struct dcbx_ets_feature *ets,
+ struct pg_help_data *pg_help_data,
+ u8 required_num_of_pg)
+{
+ u8 entry_joined = pg_help_data->num_of_pg - 1;
+ u8 entry_removed = entry_joined + 1;
+ u8 pg_joined = 0;
+
+ if (required_num_of_pg == 0 || ARRAY_SIZE(pg_help_data->data)
+ <= pg_help_data->num_of_pg) {
+
+ BNX2X_ERR("required_num_of_pg can't be zero\n");
+ return -EINVAL;
+ }
+
+ while (required_num_of_pg < pg_help_data->num_of_pg) {
+ entry_joined = pg_help_data->num_of_pg - 2;
+ entry_removed = entry_joined + 1;
+ /* protect index */
+ entry_removed %= ARRAY_SIZE(pg_help_data->data);
+
+ pg_help_data->data[entry_joined].pg_priority |=
+ pg_help_data->data[entry_removed].pg_priority;
+
+ pg_help_data->data[entry_joined].num_of_dif_pri +=
+ pg_help_data->data[entry_removed].num_of_dif_pri;
+
+ if (pg_help_data->data[entry_joined].pg == DCBX_STRICT_PRI_PG ||
+ pg_help_data->data[entry_removed].pg == DCBX_STRICT_PRI_PG)
+ /* Entries joined strict priority rules */
+ pg_help_data->data[entry_joined].pg =
+ DCBX_STRICT_PRI_PG;
+ else {
+ /* Entries can be joined join BW */
+ pg_joined = DCBX_PG_BW_GET(ets->pg_bw_tbl,
+ pg_help_data->data[entry_joined].pg) +
+ DCBX_PG_BW_GET(ets->pg_bw_tbl,
+ pg_help_data->data[entry_removed].pg);
+
+ DCBX_PG_BW_SET(ets->pg_bw_tbl,
+ pg_help_data->data[entry_joined].pg, pg_joined);
+ }
+ /* Joined the entries */
+ pg_help_data->num_of_pg--;
+ }
+
+ return 0;
+}
+
+static void bnx2x_dcbx_2cos_limit_cee_three_pg_to_cos_params(
+ struct bnx2x *bp,
+ struct pg_help_data *pg_help_data,
+ struct dcbx_ets_feature *ets,
+ struct cos_help_data *cos_data,
+ u32 *pg_pri_orginal_spread,
+ u32 pri_join_mask,
+ u8 num_of_dif_pri)
+{
+ u8 i = 0;
+ u32 pri_tested = 0;
+ u8 entry = 0;
+ u8 pg_entry = 0;
+ bool b_found_strict = false;
+ u8 num_of_pri = LLFC_DRIVER_TRAFFIC_TYPE_MAX;
+
+ cos_data->data[0].pri_join_mask = cos_data->data[1].pri_join_mask = 0;
+ /* If there are both pauseable and non-pauseable priorities,
+ * the pauseable priorities go to the first queue and the
+ * non-pauseable priorities go to the second queue.
+ */
+ if (IS_DCBX_PFC_PRI_MIX_PAUSE(bp, pri_join_mask))
+ bnx2x_dcbx_separate_pauseable_from_non(bp,
+ cos_data, pg_pri_orginal_spread, ets);
+ else {
+ /* If two BW-limited PG-s were combined to one queue,
+ * the BW is their sum.
+ *
+ * If there are only pauseable priorities or only non-pauseable,
+ * and there are both BW-limited and non-BW-limited PG-s,
+ * the BW-limited PG/s go to one queue and the non-BW-limited
+ * PG/s go to the second queue.
+ *
+ * If there are only pauseable priorities or only non-pauseable
+ * and all are BW limited, then two priorities go to the first
+ * queue and one priority goes to the second queue.
+ *
+ * We will join this two cases:
+ * if one is BW limited it will go to the secoend queue
+ * otherwise the last priority will get it
+ */
+
+ cos_data->data[0].pausable = cos_data->data[1].pausable =
+ IS_DCBX_PFC_PRI_ONLY_PAUSE(bp, pri_join_mask);
+
+ for (i = 0 ; i < num_of_pri; i++) {
+ pri_tested = 1 << bp->dcbx_port_params.
+ app.traffic_type_priority[i];
+ pg_entry = (u8)pg_pri_orginal_spread[bp->
+ dcbx_port_params.app.traffic_type_priority[i]];
+
+ if (pg_entry < DCBX_MAX_NUM_PG_BW_ENTRIES) {
+ entry = 0;
+
+ if (i == (num_of_pri-1) &&
+ false == b_found_strict)
+ /* last entry will be handled separately
+ * If no priority is strict than last
+ * enty goes to last queue.*/
+ entry = 1;
+ cos_data->data[entry].pri_join_mask |=
+ pri_tested;
+ bnx2x_dcbx_add_to_cos_bw(bp,
+ &cos_data->data[entry],
+ DCBX_PG_BW_GET(ets->pg_bw_tbl,
+ pg_entry));
+ } else {
+ b_found_strict = true;
+ cos_data->data[1].pri_join_mask |= pri_tested;
+ /* If we join a group and one is strict
+ * than the bw rulls */
+ cos_data->data[1].strict =
+ BNX2X_DCBX_STRICT_COS_HIGHEST;
+ }
+ }
+ }
+}
+
+
+static void bnx2x_dcbx_2cos_limit_cee_fill_cos_params(struct bnx2x *bp,
+ struct pg_help_data *help_data,
+ struct dcbx_ets_feature *ets,
+ struct cos_help_data *cos_data,
+ u32 *pg_pri_orginal_spread,
+ u32 pri_join_mask,
+ u8 num_of_dif_pri)
+{
+
+ /* default E2 settings */
+ cos_data->num_of_cos = DCBX_COS_MAX_NUM_E2;
+
+ switch (help_data->num_of_pg) {
+ case 1:
+ bnx2x_dcbx_2cos_limit_cee_single_pg_to_cos_params(
+ bp,
+ help_data,
+ cos_data,
+ pri_join_mask,
+ num_of_dif_pri);
+ break;
+ case 2:
+ bnx2x_dcbx_2cos_limit_cee_two_pg_to_cos_params(
+ bp,
+ help_data,
+ ets,
+ cos_data,
+ pg_pri_orginal_spread,
+ pri_join_mask,
+ num_of_dif_pri);
+ break;
+
+ case 3:
+ bnx2x_dcbx_2cos_limit_cee_three_pg_to_cos_params(
+ bp,
+ help_data,
+ ets,
+ cos_data,
+ pg_pri_orginal_spread,
+ pri_join_mask,
+ num_of_dif_pri);
+ break;
+ default:
+ BNX2X_ERR("Wrong pg_help_data.num_of_pg\n");
+ bnx2x_dcbx_ets_disabled_entry_data(bp,
+ cos_data, pri_join_mask);
+ }
+}
+
+static int bnx2x_dcbx_spread_strict_pri(struct bnx2x *bp,
+ struct cos_help_data *cos_data,
+ u8 entry,
+ u8 num_spread_of_entries,
+ u8 strict_app_pris)
+{
+ u8 strict_pri = BNX2X_DCBX_STRICT_COS_HIGHEST;
+ u8 num_of_app_pri = MAX_PFC_PRIORITIES;
+ u8 app_pri_bit = 0;
+
+ while (num_spread_of_entries && num_of_app_pri > 0) {
+ app_pri_bit = 1 << (num_of_app_pri - 1);
+ if (app_pri_bit & strict_app_pris) {
+ struct cos_entry_help_data *data = &cos_data->
+ data[entry];
+ num_spread_of_entries--;
+ if (num_spread_of_entries == 0) {
+ /* last entry needed put all the entries left */
+ data->cos_bw = DCBX_INVALID_COS_BW;
+ data->strict = strict_pri;
+ data->pri_join_mask = strict_app_pris;
+ data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp,
+ data->pri_join_mask);
+ } else {
+ strict_app_pris &= ~app_pri_bit;
+
+ data->cos_bw = DCBX_INVALID_COS_BW;
+ data->strict = strict_pri;
+ data->pri_join_mask = app_pri_bit;
+ data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp,
+ data->pri_join_mask);
+ }
+
+ strict_pri =
+ BNX2X_DCBX_STRICT_COS_NEXT_LOWER_PRI(strict_pri);
+ entry++;
+ }
+
+ num_of_app_pri--;
+ }
+
+ if (num_spread_of_entries)
+ return -EINVAL;
+
+ return 0;
+}
+
+static u8 bnx2x_dcbx_cee_fill_strict_pri(struct bnx2x *bp,
+ struct cos_help_data *cos_data,
+ u8 entry,
+ u8 num_spread_of_entries,
+ u8 strict_app_pris)
+{
+
+ if (bnx2x_dcbx_spread_strict_pri(bp, cos_data, entry,
+ num_spread_of_entries,
+ strict_app_pris)) {
+ struct cos_entry_help_data *data = &cos_data->
+ data[entry];
+ /* Fill BW entry */
+ data->cos_bw = DCBX_INVALID_COS_BW;
+ data->strict = BNX2X_DCBX_STRICT_COS_HIGHEST;
+ data->pri_join_mask = strict_app_pris;
+ data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp,
+ data->pri_join_mask);
+ return 1;
+ }
+
+ return num_spread_of_entries;
+}
+
+static void bnx2x_dcbx_cee_fill_cos_params(struct bnx2x *bp,
+ struct pg_help_data *help_data,
+ struct dcbx_ets_feature *ets,
+ struct cos_help_data *cos_data,
+ u32 pri_join_mask)
+
+{
+ u8 need_num_of_entries = 0;
+ u8 i = 0;
+ u8 entry = 0;
+
+ /*
+ * if the number of requested PG-s in CEE is greater than 3
+ * then the results are not determined since this is a violation
+ * of the standard.
+ */
+ if (help_data->num_of_pg > DCBX_COS_MAX_NUM_E3B0) {
+ if (bnx2x_dcbx_join_pgs(bp, ets, help_data,
+ DCBX_COS_MAX_NUM_E3B0)) {
+ BNX2X_ERR("Unable to reduce the number of PGs -"
+ "we will disables ETS\n");
+ bnx2x_dcbx_ets_disabled_entry_data(bp, cos_data,
+ pri_join_mask);
+ return;
+ }
+ }
+
+ for (i = 0 ; i < help_data->num_of_pg; i++) {
+ struct pg_entry_help_data *pg = &help_data->data[i];
+ if (pg->pg < DCBX_MAX_NUM_PG_BW_ENTRIES) {
+ struct cos_entry_help_data *data = &cos_data->
+ data[entry];
+ /* Fill BW entry */
+ data->cos_bw = DCBX_PG_BW_GET(ets->pg_bw_tbl, pg->pg);
+ data->strict = BNX2X_DCBX_STRICT_INVALID;
+ data->pri_join_mask = pg->pg_priority;
+ data->pausable = DCBX_IS_PFC_PRI_SOME_PAUSE(bp,
+ data->pri_join_mask);
+
+ entry++;
+ } else {
+ need_num_of_entries = min_t(u8,
+ (u8)pg->num_of_dif_pri,
+ (u8)DCBX_COS_MAX_NUM_E3B0 -
+ help_data->num_of_pg + 1);
+ /*
+ * If there are still VOQ-s which have no associated PG,
+ * then associate these VOQ-s to PG15. These PG-s will
+ * be used for SP between priorities on PG15.
+ */
+ entry += bnx2x_dcbx_cee_fill_strict_pri(bp, cos_data,
+ entry, need_num_of_entries, pg->pg_priority);
+ }
+ }
+
+ /* the entry will represent the number of COSes used */
+ cos_data->num_of_cos = entry;
+}
+static void bnx2x_dcbx_fill_cos_params(struct bnx2x *bp,
+ struct pg_help_data *help_data,
+ struct dcbx_ets_feature *ets,
+ u32 *pg_pri_orginal_spread)
+{
+ struct cos_help_data cos_data;
+ u8 i = 0;
+ u32 pri_join_mask = 0;
+ u8 num_of_dif_pri = 0;
+
+ memset(&cos_data, 0, sizeof(cos_data));
+
+ /* Validate the pg value */
+ for (i = 0; i < help_data->num_of_pg ; i++) {
+ if (DCBX_STRICT_PRIORITY != help_data->data[i].pg &&
+ DCBX_MAX_NUM_PG_BW_ENTRIES <= help_data->data[i].pg)
+ BNX2X_ERR("Invalid pg[%d] data %x\n", i,
+ help_data->data[i].pg);
+ pri_join_mask |= help_data->data[i].pg_priority;
+ num_of_dif_pri += help_data->data[i].num_of_dif_pri;
+ }
+
+ /* defaults */
+ cos_data.num_of_cos = 1;
+ for (i = 0; i < ARRAY_SIZE(cos_data.data); i++) {
+ cos_data.data[i].pri_join_mask = 0;
+ cos_data.data[i].pausable = false;
+ cos_data.data[i].strict = BNX2X_DCBX_STRICT_INVALID;
+ cos_data.data[i].cos_bw = DCBX_INVALID_COS_BW;
+ }
+
+ if (CHIP_IS_E3B0(bp))
+ bnx2x_dcbx_cee_fill_cos_params(bp, help_data, ets,
+ &cos_data, pri_join_mask);
+ else /* E2 + E3A0 */
+ bnx2x_dcbx_2cos_limit_cee_fill_cos_params(bp,
+ help_data, ets,
+ &cos_data,
+ pg_pri_orginal_spread,
+ pri_join_mask,
+ num_of_dif_pri);
+
+ for (i = 0; i < cos_data.num_of_cos ; i++) {
+ struct bnx2x_dcbx_cos_params *p =
+ &bp->dcbx_port_params.ets.cos_params[i];
+
+ p->strict = cos_data.data[i].strict;
+ p->bw_tbl = cos_data.data[i].cos_bw;
+ p->pri_bitmask = cos_data.data[i].pri_join_mask;
+ p->pauseable = cos_data.data[i].pausable;
+
+ /* sanity */
+ if (p->bw_tbl != DCBX_INVALID_COS_BW ||
+ p->strict != BNX2X_DCBX_STRICT_INVALID) {
+ if (p->pri_bitmask == 0)
+ BNX2X_ERR("Invalid pri_bitmask for %d\n", i);
+
+ if (CHIP_IS_E2(bp) || CHIP_IS_E3A0(bp)) {
+
+ if (p->pauseable &&
+ DCBX_PFC_PRI_GET_NON_PAUSE(bp,
+ p->pri_bitmask) != 0)
+ BNX2X_ERR("Inconsistent config for "
+ "pausable COS %d\n", i);
+
+ if (!p->pauseable &&
+ DCBX_PFC_PRI_GET_PAUSE(bp,
+ p->pri_bitmask) != 0)
+ BNX2X_ERR("Inconsistent config for "
+ "nonpausable COS %d\n", i);
+ }
+ }
+
+ if (p->pauseable)
+ DP(NETIF_MSG_LINK, "COS %d PAUSABLE prijoinmask 0x%x\n",
+ i, cos_data.data[i].pri_join_mask);
+ else
+ DP(NETIF_MSG_LINK, "COS %d NONPAUSABLE prijoinmask "
+ "0x%x\n",
+ i, cos_data.data[i].pri_join_mask);
+ }
+
+ bp->dcbx_port_params.ets.num_of_cos = cos_data.num_of_cos ;
+}
+
+static void bnx2x_dcbx_get_ets_pri_pg_tbl(struct bnx2x *bp,
+ u32 *set_configuration_ets_pg,
+ u32 *pri_pg_tbl)
+{
+ int i;
+
+ for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES; i++) {
+ set_configuration_ets_pg[i] = DCBX_PRI_PG_GET(pri_pg_tbl, i);
+
+ DP(NETIF_MSG_LINK, "set_configuration_ets_pg[%d] = 0x%x\n",
+ i, set_configuration_ets_pg[i]);
+ }
+}
+
+static void bnx2x_dcbx_fw_struct(struct bnx2x *bp,
+ struct bnx2x_func_tx_start_params *pfc_fw_cfg)
+{
+ u16 pri_bit = 0;
+ u8 cos = 0, pri = 0;
+ struct priority_cos *tt2cos;
+ u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
+
+ memset(pfc_fw_cfg, 0, sizeof(*pfc_fw_cfg));
+
+ /* to disable DCB - the structure must be zeroed */
+ if (bp->dcbx_error & DCBX_REMOTE_MIB_ERROR)
+ return;
+
+ /*shortcut*/
+ tt2cos = pfc_fw_cfg->traffic_type_to_priority_cos;
+
+ /* Fw version should be incremented each update */
+ pfc_fw_cfg->dcb_version = ++bp->dcb_version;
+ pfc_fw_cfg->dcb_enabled = 1;
+
+ /* Fill priority parameters */
+ for (pri = 0; pri < LLFC_DRIVER_TRAFFIC_TYPE_MAX; pri++) {
+ tt2cos[pri].priority = ttp[pri];
+ pri_bit = 1 << tt2cos[pri].priority;
+
+ /* Fill COS parameters based on COS calculated to
+ * make it more general for future use */
+ for (cos = 0; cos < bp->dcbx_port_params.ets.num_of_cos; cos++)
+ if (bp->dcbx_port_params.ets.cos_params[cos].
+ pri_bitmask & pri_bit)
+ tt2cos[pri].cos = cos;
+ }
+
+ /* we never want the FW to add a 0 vlan tag */
+ pfc_fw_cfg->dont_add_pri_0_en = 1;
+
+ bnx2x_dcbx_print_cos_params(bp, pfc_fw_cfg);
+}
+
+void bnx2x_dcbx_pmf_update(struct bnx2x *bp)
+{
+ /* if we need to syncronize DCBX result from prev PMF
+ * read it from shmem and update bp accordingly
+ */
+ if (SHMEM2_HAS(bp, drv_flags) &&
+ GET_FLAGS(SHMEM2_RD(bp, drv_flags), DRV_FLAGS_DCB_CONFIGURED)) {
+ /* Read neg results if dcbx is in the FW */
+ if (bnx2x_dcbx_read_shmem_neg_results(bp))
+ return;
+
+ bnx2x_dump_dcbx_drv_param(bp, &bp->dcbx_local_feat,
+ bp->dcbx_error);
+ bnx2x_get_dcbx_drv_param(bp, &bp->dcbx_local_feat,
+ bp->dcbx_error);
+ }
+}
+
+/* DCB netlink */
+#ifdef BCM_DCBNL
+
+#define BNX2X_DCBX_CAPS (DCB_CAP_DCBX_LLD_MANAGED | \
+ DCB_CAP_DCBX_VER_CEE | DCB_CAP_DCBX_STATIC)
+
+static inline bool bnx2x_dcbnl_set_valid(struct bnx2x *bp)
+{
+ /* validate dcbnl call that may change HW state:
+ * DCB is on and DCBX mode was SUCCESSFULLY set by the user.
+ */
+ return bp->dcb_state && bp->dcbx_mode_uset;
+}
+
+static u8 bnx2x_dcbnl_get_state(struct net_device *netdev)
+{
+ struct bnx2x *bp = netdev_priv(netdev);
+ DP(NETIF_MSG_LINK, "state = %d\n", bp->dcb_state);
+ return bp->dcb_state;
+}
+
+static u8 bnx2x_dcbnl_set_state(struct net_device *netdev, u8 state)
+{
+ struct bnx2x *bp = netdev_priv(netdev);
+ DP(NETIF_MSG_LINK, "state = %s\n", state ? "on" : "off");
+
+ bnx2x_dcbx_set_state(bp, (state ? true : false), bp->dcbx_enabled);
+ return 0;
+}
+
+static void bnx2x_dcbnl_get_perm_hw_addr(struct net_device *netdev,
+ u8 *perm_addr)
+{
+ struct bnx2x *bp = netdev_priv(netdev);
+ DP(NETIF_MSG_LINK, "GET-PERM-ADDR\n");
+
+ /* first the HW mac address */
+ memcpy(perm_addr, netdev->dev_addr, netdev->addr_len);
+
+#ifdef BCM_CNIC
+ /* second SAN address */
+ memcpy(perm_addr+netdev->addr_len, bp->fip_mac, netdev->addr_len);
+#endif
+}
+
+static void bnx2x_dcbnl_set_pg_tccfg_tx(struct net_device *netdev, int prio,
+ u8 prio_type, u8 pgid, u8 bw_pct,
+ u8 up_map)
+{
+ struct bnx2x *bp = netdev_priv(netdev);
+
+ DP(NETIF_MSG_LINK, "prio[%d] = %d\n", prio, pgid);
+ if (!bnx2x_dcbnl_set_valid(bp) || prio >= DCBX_MAX_NUM_PRI_PG_ENTRIES)
+ return;
+
+ /**
+ * bw_pct ingnored - band-width percentage devision between user
+ * priorities within the same group is not
+ * standard and hence not supported
+ *
+ * prio_type igonred - priority levels within the same group are not
+ * standard and hence are not supported. According
+ * to the standard pgid 15 is dedicated to strict
+ * prioirty traffic (on the port level).
+ *
+ * up_map ignored
+ */
+
+ bp->dcbx_config_params.admin_configuration_ets_pg[prio] = pgid;
+ bp->dcbx_config_params.admin_ets_configuration_tx_enable = 1;
+}
+
+static void bnx2x_dcbnl_set_pg_bwgcfg_tx(struct net_device *netdev,
+ int pgid, u8 bw_pct)
+{
+ struct bnx2x *bp = netdev_priv(netdev);
+ DP(NETIF_MSG_LINK, "pgid[%d] = %d\n", pgid, bw_pct);
+
+ if (!bnx2x_dcbnl_set_valid(bp) || pgid >= DCBX_MAX_NUM_PG_BW_ENTRIES)
+ return;
+
+ bp->dcbx_config_params.admin_configuration_bw_precentage[pgid] = bw_pct;
+ bp->dcbx_config_params.admin_ets_configuration_tx_enable = 1;
+}
+
+static void bnx2x_dcbnl_set_pg_tccfg_rx(struct net_device *netdev, int prio,
+ u8 prio_type, u8 pgid, u8 bw_pct,
+ u8 up_map)
+{
+ struct bnx2x *bp = netdev_priv(netdev);
+ DP(NETIF_MSG_LINK, "Nothing to set; No RX support\n");
+}
+
+static void bnx2x_dcbnl_set_pg_bwgcfg_rx(struct net_device *netdev,
+ int pgid, u8 bw_pct)
+{
+ struct bnx2x *bp = netdev_priv(netdev);
+ DP(NETIF_MSG_LINK, "Nothing to set; No RX support\n");
+}
+
+static void bnx2x_dcbnl_get_pg_tccfg_tx(struct net_device *netdev, int prio,
+ u8 *prio_type, u8 *pgid, u8 *bw_pct,
+ u8 *up_map)
+{
+ struct bnx2x *bp = netdev_priv(netdev);
+ DP(NETIF_MSG_LINK, "prio = %d\n", prio);
+
+ /**
+ * bw_pct ingnored - band-width percentage devision between user
+ * priorities within the same group is not
+ * standard and hence not supported
+ *
+ * prio_type igonred - priority levels within the same group are not
+ * standard and hence are not supported. According
+ * to the standard pgid 15 is dedicated to strict
+ * prioirty traffic (on the port level).
+ *
+ * up_map ignored
+ */
+ *up_map = *bw_pct = *prio_type = *pgid = 0;
+
+ if (!bp->dcb_state || prio >= DCBX_MAX_NUM_PRI_PG_ENTRIES)
+ return;
+
+ *pgid = DCBX_PRI_PG_GET(bp->dcbx_local_feat.ets.pri_pg_tbl, prio);
+}
+
+static void bnx2x_dcbnl_get_pg_bwgcfg_tx(struct net_device *netdev,
+ int pgid, u8 *bw_pct)
+{
+ struct bnx2x *bp = netdev_priv(netdev);
+ DP(NETIF_MSG_LINK, "pgid = %d\n", pgid);
+
+ *bw_pct = 0;
+
+ if (!bp->dcb_state || pgid >= DCBX_MAX_NUM_PG_BW_ENTRIES)
+ return;
+
+ *bw_pct = DCBX_PG_BW_GET(bp->dcbx_local_feat.ets.pg_bw_tbl, pgid);
+}
+
+static void bnx2x_dcbnl_get_pg_tccfg_rx(struct net_device *netdev, int prio,
+ u8 *prio_type, u8 *pgid, u8 *bw_pct,
+ u8 *up_map)
+{
+ struct bnx2x *bp = netdev_priv(netdev);
+ DP(NETIF_MSG_LINK, "Nothing to get; No RX support\n");
+
+ *prio_type = *pgid = *bw_pct = *up_map = 0;
+}
+
+static void bnx2x_dcbnl_get_pg_bwgcfg_rx(struct net_device *netdev,
+ int pgid, u8 *bw_pct)
+{
+ struct bnx2x *bp = netdev_priv(netdev);
+ DP(NETIF_MSG_LINK, "Nothing to get; No RX support\n");
+
+ *bw_pct = 0;
+}
+
+static void bnx2x_dcbnl_set_pfc_cfg(struct net_device *netdev, int prio,
+ u8 setting)
+{
+ struct bnx2x *bp = netdev_priv(netdev);
+ DP(NETIF_MSG_LINK, "prio[%d] = %d\n", prio, setting);
+
+ if (!bnx2x_dcbnl_set_valid(bp) || prio >= MAX_PFC_PRIORITIES)
+ return;
+
+ bp->dcbx_config_params.admin_pfc_bitmap |= ((setting ? 1 : 0) << prio);
+
+ if (setting)
+ bp->dcbx_config_params.admin_pfc_tx_enable = 1;
+}
+
+static void bnx2x_dcbnl_get_pfc_cfg(struct net_device *netdev, int prio,
+ u8 *setting)
+{
+ struct bnx2x *bp = netdev_priv(netdev);
+ DP(NETIF_MSG_LINK, "prio = %d\n", prio);
+
+ *setting = 0;
+
+ if (!bp->dcb_state || prio >= MAX_PFC_PRIORITIES)
+ return;
+
+ *setting = (bp->dcbx_local_feat.pfc.pri_en_bitmap >> prio) & 0x1;
+}
+
+static u8 bnx2x_dcbnl_set_all(struct net_device *netdev)
+{
+ struct bnx2x *bp = netdev_priv(netdev);
+ int rc = 0;
+
+ DP(NETIF_MSG_LINK, "SET-ALL\n");
+
+ if (!bnx2x_dcbnl_set_valid(bp))
+ return 1;
+
+ if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
+ netdev_err(bp->dev, "Handling parity error recovery. "
+ "Try again later\n");
+ return 1;
+ }
+ if (netif_running(bp->dev)) {
+ bnx2x_nic_unload(bp, UNLOAD_NORMAL);
+ rc = bnx2x_nic_load(bp, LOAD_NORMAL);
+ }
+ DP(NETIF_MSG_LINK, "set_dcbx_params done (%d)\n", rc);
+ if (rc)
+ return 1;
+
+ return 0;
+}
+
+static u8 bnx2x_dcbnl_get_cap(struct net_device *netdev, int capid, u8 *cap)
+{
+ struct bnx2x *bp = netdev_priv(netdev);
+ u8 rval = 0;
+
+ if (bp->dcb_state) {
+ switch (capid) {
+ case DCB_CAP_ATTR_PG:
+ *cap = true;
+ break;
+ case DCB_CAP_ATTR_PFC:
+ *cap = true;
+ break;
+ case DCB_CAP_ATTR_UP2TC:
+ *cap = false;
+ break;
+ case DCB_CAP_ATTR_PG_TCS:
+ *cap = 0x80; /* 8 priorities for PGs */
+ break;
+ case DCB_CAP_ATTR_PFC_TCS:
+ *cap = 0x80; /* 8 priorities for PFC */
+ break;
+ case DCB_CAP_ATTR_GSP:
+ *cap = true;
+ break;
+ case DCB_CAP_ATTR_BCN:
+ *cap = false;
+ break;
+ case DCB_CAP_ATTR_DCBX:
+ *cap = BNX2X_DCBX_CAPS;
+ default:
+ rval = -EINVAL;
+ break;
+ }
+ } else
+ rval = -EINVAL;
+
+ DP(NETIF_MSG_LINK, "capid %d:%x\n", capid, *cap);
+ return rval;
+}
+
+static u8 bnx2x_dcbnl_get_numtcs(struct net_device *netdev, int tcid, u8 *num)
+{
+ struct bnx2x *bp = netdev_priv(netdev);
+ u8 rval = 0;
+
+ DP(NETIF_MSG_LINK, "tcid %d\n", tcid);
+
+ if (bp->dcb_state) {
+ switch (tcid) {
+ case DCB_NUMTCS_ATTR_PG:
+ *num = CHIP_IS_E3B0(bp) ? DCBX_COS_MAX_NUM_E3B0 :
+ DCBX_COS_MAX_NUM_E2;
+ break;
+ case DCB_NUMTCS_ATTR_PFC:
+ *num = CHIP_IS_E3B0(bp) ? DCBX_COS_MAX_NUM_E3B0 :
+ DCBX_COS_MAX_NUM_E2;
+ break;
+ default:
+ rval = -EINVAL;
+ break;
+ }
+ } else
+ rval = -EINVAL;
+
+ return rval;
+}
+
+static u8 bnx2x_dcbnl_set_numtcs(struct net_device *netdev, int tcid, u8 num)
+{
+ struct bnx2x *bp = netdev_priv(netdev);
+ DP(NETIF_MSG_LINK, "num tcs = %d; Not supported\n", num);
+ return -EINVAL;
+}
+
+static u8 bnx2x_dcbnl_get_pfc_state(struct net_device *netdev)
+{
+ struct bnx2x *bp = netdev_priv(netdev);
+ DP(NETIF_MSG_LINK, "state = %d\n", bp->dcbx_local_feat.pfc.enabled);
+
+ if (!bp->dcb_state)
+ return 0;
+
+ return bp->dcbx_local_feat.pfc.enabled;
+}
+
+static void bnx2x_dcbnl_set_pfc_state(struct net_device *netdev, u8 state)
+{
+ struct bnx2x *bp = netdev_priv(netdev);
+ DP(NETIF_MSG_LINK, "state = %s\n", state ? "on" : "off");
+
+ if (!bnx2x_dcbnl_set_valid(bp))
+ return;
+
+ bp->dcbx_config_params.admin_pfc_tx_enable =
+ bp->dcbx_config_params.admin_pfc_enable = (state ? 1 : 0);
+}
+
+static void bnx2x_admin_app_set_ent(
+ struct bnx2x_admin_priority_app_table *app_ent,
+ u8 idtype, u16 idval, u8 up)
+{
+ app_ent->valid = 1;
+
+ switch (idtype) {
+ case DCB_APP_IDTYPE_ETHTYPE:
+ app_ent->traffic_type = TRAFFIC_TYPE_ETH;
+ break;
+ case DCB_APP_IDTYPE_PORTNUM:
+ app_ent->traffic_type = TRAFFIC_TYPE_PORT;
+ break;
+ default:
+ break; /* never gets here */
+ }
+ app_ent->app_id = idval;
+ app_ent->priority = up;
+}
+
+static bool bnx2x_admin_app_is_equal(
+ struct bnx2x_admin_priority_app_table *app_ent,
+ u8 idtype, u16 idval)
+{
+ if (!app_ent->valid)
+ return false;
+
+ switch (idtype) {
+ case DCB_APP_IDTYPE_ETHTYPE:
+ if (app_ent->traffic_type != TRAFFIC_TYPE_ETH)
+ return false;
+ break;
+ case DCB_APP_IDTYPE_PORTNUM:
+ if (app_ent->traffic_type != TRAFFIC_TYPE_PORT)
+ return false;
+ break;
+ default:
+ return false;
+ }
+ if (app_ent->app_id != idval)
+ return false;
+
+ return true;
+}
+
+static int bnx2x_set_admin_app_up(struct bnx2x *bp, u8 idtype, u16 idval, u8 up)
+{
+ int i, ff;
+
+ /* iterate over the app entries looking for idtype and idval */
+ for (i = 0, ff = -1; i < 4; i++) {
+ struct bnx2x_admin_priority_app_table *app_ent =
+ &bp->dcbx_config_params.admin_priority_app_table[i];
+ if (bnx2x_admin_app_is_equal(app_ent, idtype, idval))
+ break;
+
+ if (ff < 0 && !app_ent->valid)
+ ff = i;
+ }
+ if (i < 4)
+ /* if found overwrite up */
+ bp->dcbx_config_params.
+ admin_priority_app_table[i].priority = up;
+ else if (ff >= 0)
+ /* not found use first-free */
+ bnx2x_admin_app_set_ent(
+ &bp->dcbx_config_params.admin_priority_app_table[ff],
+ idtype, idval, up);
+ else
+ /* app table is full */
+ return -EBUSY;
+
+ /* up configured, if not 0 make sure feature is enabled */
+ if (up)
+ bp->dcbx_config_params.admin_application_priority_tx_enable = 1;
+
+ return 0;
+}
+
+static u8 bnx2x_dcbnl_set_app_up(struct net_device *netdev, u8 idtype,
+ u16 idval, u8 up)
+{
+ struct bnx2x *bp = netdev_priv(netdev);
+
+ DP(NETIF_MSG_LINK, "app_type %d, app_id %x, prio bitmap %d\n",
+ idtype, idval, up);
+
+ if (!bnx2x_dcbnl_set_valid(bp))
+ return -EINVAL;
+
+ /* verify idtype */
+ switch (idtype) {
+ case DCB_APP_IDTYPE_ETHTYPE:
+ case DCB_APP_IDTYPE_PORTNUM:
+ break;
+ default:
+ return -EINVAL;
+ }
+ return bnx2x_set_admin_app_up(bp, idtype, idval, up);
+}
+
+static u8 bnx2x_dcbnl_get_dcbx(struct net_device *netdev)
+{
+ struct bnx2x *bp = netdev_priv(netdev);
+ u8 state;
+
+ state = DCB_CAP_DCBX_LLD_MANAGED | DCB_CAP_DCBX_VER_CEE;
+
+ if (bp->dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_OFF)
+ state |= DCB_CAP_DCBX_STATIC;
+
+ return state;
+}
+
+static u8 bnx2x_dcbnl_set_dcbx(struct net_device *netdev, u8 state)
+{
+ struct bnx2x *bp = netdev_priv(netdev);
+ DP(NETIF_MSG_LINK, "state = %02x\n", state);
+
+ /* set dcbx mode */
+
+ if ((state & BNX2X_DCBX_CAPS) != state) {
+ BNX2X_ERR("Requested DCBX mode %x is beyond advertised "
+ "capabilities\n", state);
+ return 1;
+ }
+
+ if (bp->dcb_state != BNX2X_DCB_STATE_ON) {
+ BNX2X_ERR("DCB turned off, DCBX configuration is invalid\n");
+ return 1;
+ }
+
+ if (state & DCB_CAP_DCBX_STATIC)
+ bp->dcbx_enabled = BNX2X_DCBX_ENABLED_ON_NEG_OFF;
+ else
+ bp->dcbx_enabled = BNX2X_DCBX_ENABLED_ON_NEG_ON;
+
+ bp->dcbx_mode_uset = true;
+ return 0;
+}
+
+static u8 bnx2x_dcbnl_get_featcfg(struct net_device *netdev, int featid,
+ u8 *flags)
+{
+ struct bnx2x *bp = netdev_priv(netdev);
+ u8 rval = 0;
+
+ DP(NETIF_MSG_LINK, "featid %d\n", featid);
+
+ if (bp->dcb_state) {
+ *flags = 0;
+ switch (featid) {
+ case DCB_FEATCFG_ATTR_PG:
+ if (bp->dcbx_local_feat.ets.enabled)
+ *flags |= DCB_FEATCFG_ENABLE;
+ if (bp->dcbx_error & DCBX_LOCAL_ETS_ERROR)
+ *flags |= DCB_FEATCFG_ERROR;
+ break;
+ case DCB_FEATCFG_ATTR_PFC:
+ if (bp->dcbx_local_feat.pfc.enabled)
+ *flags |= DCB_FEATCFG_ENABLE;
+ if (bp->dcbx_error & (DCBX_LOCAL_PFC_ERROR |
+ DCBX_LOCAL_PFC_MISMATCH))
+ *flags |= DCB_FEATCFG_ERROR;
+ break;
+ case DCB_FEATCFG_ATTR_APP:
+ if (bp->dcbx_local_feat.app.enabled)
+ *flags |= DCB_FEATCFG_ENABLE;
+ if (bp->dcbx_error & (DCBX_LOCAL_APP_ERROR |
+ DCBX_LOCAL_APP_MISMATCH))
+ *flags |= DCB_FEATCFG_ERROR;
+ break;
+ default:
+ rval = -EINVAL;
+ break;
+ }
+ } else
+ rval = -EINVAL;
+
+ return rval;
+}
+
+static u8 bnx2x_dcbnl_set_featcfg(struct net_device *netdev, int featid,
+ u8 flags)
+{
+ struct bnx2x *bp = netdev_priv(netdev);
+ u8 rval = 0;
+
+ DP(NETIF_MSG_LINK, "featid = %d flags = %02x\n", featid, flags);
+
+ /* ignore the 'advertise' flag */
+ if (bnx2x_dcbnl_set_valid(bp)) {
+ switch (featid) {
+ case DCB_FEATCFG_ATTR_PG:
+ bp->dcbx_config_params.admin_ets_enable =
+ flags & DCB_FEATCFG_ENABLE ? 1 : 0;
+ bp->dcbx_config_params.admin_ets_willing =
+ flags & DCB_FEATCFG_WILLING ? 1 : 0;
+ break;
+ case DCB_FEATCFG_ATTR_PFC:
+ bp->dcbx_config_params.admin_pfc_enable =
+ flags & DCB_FEATCFG_ENABLE ? 1 : 0;
+ bp->dcbx_config_params.admin_pfc_willing =
+ flags & DCB_FEATCFG_WILLING ? 1 : 0;
+ break;
+ case DCB_FEATCFG_ATTR_APP:
+ /* ignore enable, always enabled */
+ bp->dcbx_config_params.admin_app_priority_willing =
+ flags & DCB_FEATCFG_WILLING ? 1 : 0;
+ break;
+ default:
+ rval = -EINVAL;
+ break;
+ }
+ } else
+ rval = -EINVAL;
+
+ return rval;
+}
+
+static int bnx2x_peer_appinfo(struct net_device *netdev,
+ struct dcb_peer_app_info *info, u16* app_count)
+{
+ int i;
+ struct bnx2x *bp = netdev_priv(netdev);
+
+ DP(NETIF_MSG_LINK, "APP-INFO\n");
+
+ info->willing = (bp->dcbx_remote_flags & DCBX_APP_REM_WILLING) ?: 0;
+ info->error = (bp->dcbx_remote_flags & DCBX_APP_RX_ERROR) ?: 0;
+ *app_count = 0;
+
+ for (i = 0; i < DCBX_MAX_APP_PROTOCOL; i++)
+ if (bp->dcbx_remote_feat.app.app_pri_tbl[i].appBitfield &
+ DCBX_APP_ENTRY_VALID)
+ (*app_count)++;
+ return 0;
+}
+
+static int bnx2x_peer_apptable(struct net_device *netdev,
+ struct dcb_app *table)
+{
+ int i, j;
+ struct bnx2x *bp = netdev_priv(netdev);
+
+ DP(NETIF_MSG_LINK, "APP-TABLE\n");
+
+ for (i = 0, j = 0; i < DCBX_MAX_APP_PROTOCOL; i++) {
+ struct dcbx_app_priority_entry *ent =
+ &bp->dcbx_remote_feat.app.app_pri_tbl[i];
+
+ if (ent->appBitfield & DCBX_APP_ENTRY_VALID) {
+ table[j].selector = bnx2x_dcbx_dcbnl_app_idtype(ent);
+ table[j].priority = bnx2x_dcbx_dcbnl_app_up(ent);
+ table[j++].protocol = ent->app_id;
+ }
+ }
+ return 0;
+}
+
+static int bnx2x_cee_peer_getpg(struct net_device *netdev, struct cee_pg *pg)
+{
+ int i;
+ struct bnx2x *bp = netdev_priv(netdev);
+
+ pg->willing = (bp->dcbx_remote_flags & DCBX_ETS_REM_WILLING) ?: 0;
+
+ for (i = 0; i < CEE_DCBX_MAX_PGS; i++) {
+ pg->pg_bw[i] =
+ DCBX_PG_BW_GET(bp->dcbx_remote_feat.ets.pg_bw_tbl, i);
+ pg->prio_pg[i] =
+ DCBX_PRI_PG_GET(bp->dcbx_remote_feat.ets.pri_pg_tbl, i);
+ }
+ return 0;
+}
+
+static int bnx2x_cee_peer_getpfc(struct net_device *netdev,
+ struct cee_pfc *pfc)
+{
+ struct bnx2x *bp = netdev_priv(netdev);
+ pfc->tcs_supported = bp->dcbx_remote_feat.pfc.pfc_caps;
+ pfc->pfc_en = bp->dcbx_remote_feat.pfc.pri_en_bitmap;
+ return 0;
+}
+
+const struct dcbnl_rtnl_ops bnx2x_dcbnl_ops = {
+ .getstate = bnx2x_dcbnl_get_state,
+ .setstate = bnx2x_dcbnl_set_state,
+ .getpermhwaddr = bnx2x_dcbnl_get_perm_hw_addr,
+ .setpgtccfgtx = bnx2x_dcbnl_set_pg_tccfg_tx,
+ .setpgbwgcfgtx = bnx2x_dcbnl_set_pg_bwgcfg_tx,
+ .setpgtccfgrx = bnx2x_dcbnl_set_pg_tccfg_rx,
+ .setpgbwgcfgrx = bnx2x_dcbnl_set_pg_bwgcfg_rx,
+ .getpgtccfgtx = bnx2x_dcbnl_get_pg_tccfg_tx,
+ .getpgbwgcfgtx = bnx2x_dcbnl_get_pg_bwgcfg_tx,
+ .getpgtccfgrx = bnx2x_dcbnl_get_pg_tccfg_rx,
+ .getpgbwgcfgrx = bnx2x_dcbnl_get_pg_bwgcfg_rx,
+ .setpfccfg = bnx2x_dcbnl_set_pfc_cfg,
+ .getpfccfg = bnx2x_dcbnl_get_pfc_cfg,
+ .setall = bnx2x_dcbnl_set_all,
+ .getcap = bnx2x_dcbnl_get_cap,
+ .getnumtcs = bnx2x_dcbnl_get_numtcs,
+ .setnumtcs = bnx2x_dcbnl_set_numtcs,
+ .getpfcstate = bnx2x_dcbnl_get_pfc_state,
+ .setpfcstate = bnx2x_dcbnl_set_pfc_state,
+ .setapp = bnx2x_dcbnl_set_app_up,
+ .getdcbx = bnx2x_dcbnl_get_dcbx,
+ .setdcbx = bnx2x_dcbnl_set_dcbx,
+ .getfeatcfg = bnx2x_dcbnl_get_featcfg,
+ .setfeatcfg = bnx2x_dcbnl_set_featcfg,
+ .peer_getappinfo = bnx2x_peer_appinfo,
+ .peer_getapptable = bnx2x_peer_apptable,
+ .cee_peer_getpg = bnx2x_cee_peer_getpg,
+ .cee_peer_getpfc = bnx2x_cee_peer_getpfc,
+};
+
+#endif /* BCM_DCBNL */
--- /dev/null
- REG_WR(bp, PXP2_REG_PGL_ADDR_88_F0 + BP_PORT(bp)*16, 0);
- REG_WR(bp, PXP2_REG_PGL_ADDR_8C_F0 + BP_PORT(bp)*16, 0);
- REG_WR(bp, PXP2_REG_PGL_ADDR_90_F0 + BP_PORT(bp)*16, 0);
- REG_WR(bp, PXP2_REG_PGL_ADDR_94_F0 + BP_PORT(bp)*16, 0);
+/* bnx2x_main.c: Broadcom Everest network driver.
+ *
+ * Copyright (c) 2007-2011 Broadcom Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation.
+ *
+ * Maintained by: Eilon Greenstein <eilong@broadcom.com>
+ * Written by: Eliezer Tamir
+ * Based on code from Michael Chan's bnx2 driver
+ * UDP CSUM errata workaround by Arik Gendelman
+ * Slowpath and fastpath rework by Vladislav Zolotarov
+ * Statistics and Link management by Yitchak Gertner
+ *
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/device.h> /* for dev_info() */
+#include <linux/timer.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/dma-mapping.h>
+#include <linux/bitops.h>
+#include <linux/irq.h>
+#include <linux/delay.h>
+#include <asm/byteorder.h>
+#include <linux/time.h>
+#include <linux/ethtool.h>
+#include <linux/mii.h>
+#include <linux/if.h>
+#include <linux/if_vlan.h>
+#include <net/ip.h>
+#include <net/ipv6.h>
+#include <net/tcp.h>
+#include <net/checksum.h>
+#include <net/ip6_checksum.h>
+#include <linux/workqueue.h>
+#include <linux/crc32.h>
+#include <linux/crc32c.h>
+#include <linux/prefetch.h>
+#include <linux/zlib.h>
+#include <linux/io.h>
+#include <linux/stringify.h>
+#include <linux/vmalloc.h>
+
+#include "bnx2x.h"
+#include "bnx2x_init.h"
+#include "bnx2x_init_ops.h"
+#include "bnx2x_cmn.h"
+#include "bnx2x_dcb.h"
+#include "bnx2x_sp.h"
+
+#include <linux/firmware.h>
+#include "bnx2x_fw_file_hdr.h"
+/* FW files */
+#define FW_FILE_VERSION \
+ __stringify(BCM_5710_FW_MAJOR_VERSION) "." \
+ __stringify(BCM_5710_FW_MINOR_VERSION) "." \
+ __stringify(BCM_5710_FW_REVISION_VERSION) "." \
+ __stringify(BCM_5710_FW_ENGINEERING_VERSION)
+#define FW_FILE_NAME_E1 "bnx2x/bnx2x-e1-" FW_FILE_VERSION ".fw"
+#define FW_FILE_NAME_E1H "bnx2x/bnx2x-e1h-" FW_FILE_VERSION ".fw"
+#define FW_FILE_NAME_E2 "bnx2x/bnx2x-e2-" FW_FILE_VERSION ".fw"
+
+/* Time in jiffies before concluding the transmitter is hung */
+#define TX_TIMEOUT (5*HZ)
+
+static char version[] __devinitdata =
+ "Broadcom NetXtreme II 5771x/578xx 10/20-Gigabit Ethernet Driver "
+ DRV_MODULE_NAME " " DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
+
+MODULE_AUTHOR("Eliezer Tamir");
+MODULE_DESCRIPTION("Broadcom NetXtreme II "
+ "BCM57710/57711/57711E/"
+ "57712/57712_MF/57800/57800_MF/57810/57810_MF/"
+ "57840/57840_MF Driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_MODULE_VERSION);
+MODULE_FIRMWARE(FW_FILE_NAME_E1);
+MODULE_FIRMWARE(FW_FILE_NAME_E1H);
+MODULE_FIRMWARE(FW_FILE_NAME_E2);
+
+static int multi_mode = 1;
+module_param(multi_mode, int, 0);
+MODULE_PARM_DESC(multi_mode, " Multi queue mode "
+ "(0 Disable; 1 Enable (default))");
+
+int num_queues;
+module_param(num_queues, int, 0);
+MODULE_PARM_DESC(num_queues, " Number of queues for multi_mode=1"
+ " (default is as a number of CPUs)");
+
+static int disable_tpa;
+module_param(disable_tpa, int, 0);
+MODULE_PARM_DESC(disable_tpa, " Disable the TPA (LRO) feature");
+
+#define INT_MODE_INTx 1
+#define INT_MODE_MSI 2
+static int int_mode;
+module_param(int_mode, int, 0);
+MODULE_PARM_DESC(int_mode, " Force interrupt mode other than MSI-X "
+ "(1 INT#x; 2 MSI)");
+
+static int dropless_fc;
+module_param(dropless_fc, int, 0);
+MODULE_PARM_DESC(dropless_fc, " Pause on exhausted host ring");
+
+static int poll;
+module_param(poll, int, 0);
+MODULE_PARM_DESC(poll, " Use polling (for debug)");
+
+static int mrrs = -1;
+module_param(mrrs, int, 0);
+MODULE_PARM_DESC(mrrs, " Force Max Read Req Size (0..3) (for debug)");
+
+static int debug;
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, " Default debug msglevel");
+
+
+
+struct workqueue_struct *bnx2x_wq;
+
+enum bnx2x_board_type {
+ BCM57710 = 0,
+ BCM57711,
+ BCM57711E,
+ BCM57712,
+ BCM57712_MF,
+ BCM57800,
+ BCM57800_MF,
+ BCM57810,
+ BCM57810_MF,
+ BCM57840,
+ BCM57840_MF
+};
+
+/* indexed by board_type, above */
+static struct {
+ char *name;
+} board_info[] __devinitdata = {
+ { "Broadcom NetXtreme II BCM57710 10 Gigabit PCIe [Everest]" },
+ { "Broadcom NetXtreme II BCM57711 10 Gigabit PCIe" },
+ { "Broadcom NetXtreme II BCM57711E 10 Gigabit PCIe" },
+ { "Broadcom NetXtreme II BCM57712 10 Gigabit Ethernet" },
+ { "Broadcom NetXtreme II BCM57712 10 Gigabit Ethernet Multi Function" },
+ { "Broadcom NetXtreme II BCM57800 10 Gigabit Ethernet" },
+ { "Broadcom NetXtreme II BCM57800 10 Gigabit Ethernet Multi Function" },
+ { "Broadcom NetXtreme II BCM57810 10 Gigabit Ethernet" },
+ { "Broadcom NetXtreme II BCM57810 10 Gigabit Ethernet Multi Function" },
+ { "Broadcom NetXtreme II BCM57840 10/20 Gigabit Ethernet" },
+ { "Broadcom NetXtreme II BCM57840 10/20 Gigabit "
+ "Ethernet Multi Function"}
+};
+
+#ifndef PCI_DEVICE_ID_NX2_57710
+#define PCI_DEVICE_ID_NX2_57710 CHIP_NUM_57710
+#endif
+#ifndef PCI_DEVICE_ID_NX2_57711
+#define PCI_DEVICE_ID_NX2_57711 CHIP_NUM_57711
+#endif
+#ifndef PCI_DEVICE_ID_NX2_57711E
+#define PCI_DEVICE_ID_NX2_57711E CHIP_NUM_57711E
+#endif
+#ifndef PCI_DEVICE_ID_NX2_57712
+#define PCI_DEVICE_ID_NX2_57712 CHIP_NUM_57712
+#endif
+#ifndef PCI_DEVICE_ID_NX2_57712_MF
+#define PCI_DEVICE_ID_NX2_57712_MF CHIP_NUM_57712_MF
+#endif
+#ifndef PCI_DEVICE_ID_NX2_57800
+#define PCI_DEVICE_ID_NX2_57800 CHIP_NUM_57800
+#endif
+#ifndef PCI_DEVICE_ID_NX2_57800_MF
+#define PCI_DEVICE_ID_NX2_57800_MF CHIP_NUM_57800_MF
+#endif
+#ifndef PCI_DEVICE_ID_NX2_57810
+#define PCI_DEVICE_ID_NX2_57810 CHIP_NUM_57810
+#endif
+#ifndef PCI_DEVICE_ID_NX2_57810_MF
+#define PCI_DEVICE_ID_NX2_57810_MF CHIP_NUM_57810_MF
+#endif
+#ifndef PCI_DEVICE_ID_NX2_57840
+#define PCI_DEVICE_ID_NX2_57840 CHIP_NUM_57840
+#endif
+#ifndef PCI_DEVICE_ID_NX2_57840_MF
+#define PCI_DEVICE_ID_NX2_57840_MF CHIP_NUM_57840_MF
+#endif
+static DEFINE_PCI_DEVICE_TABLE(bnx2x_pci_tbl) = {
+ { PCI_VDEVICE(BROADCOM, PCI_DEVICE_ID_NX2_57710), BCM57710 },
+ { PCI_VDEVICE(BROADCOM, PCI_DEVICE_ID_NX2_57711), BCM57711 },
+ { PCI_VDEVICE(BROADCOM, PCI_DEVICE_ID_NX2_57711E), BCM57711E },
+ { PCI_VDEVICE(BROADCOM, PCI_DEVICE_ID_NX2_57712), BCM57712 },
+ { PCI_VDEVICE(BROADCOM, PCI_DEVICE_ID_NX2_57712_MF), BCM57712_MF },
+ { PCI_VDEVICE(BROADCOM, PCI_DEVICE_ID_NX2_57800), BCM57800 },
+ { PCI_VDEVICE(BROADCOM, PCI_DEVICE_ID_NX2_57800_MF), BCM57800_MF },
+ { PCI_VDEVICE(BROADCOM, PCI_DEVICE_ID_NX2_57810), BCM57810 },
+ { PCI_VDEVICE(BROADCOM, PCI_DEVICE_ID_NX2_57810_MF), BCM57810_MF },
+ { PCI_VDEVICE(BROADCOM, PCI_DEVICE_ID_NX2_57840), BCM57840 },
+ { PCI_VDEVICE(BROADCOM, PCI_DEVICE_ID_NX2_57840_MF), BCM57840_MF },
+ { 0 }
+};
+
+MODULE_DEVICE_TABLE(pci, bnx2x_pci_tbl);
+
+/****************************************************************************
+* General service functions
+****************************************************************************/
+
+static inline void __storm_memset_dma_mapping(struct bnx2x *bp,
+ u32 addr, dma_addr_t mapping)
+{
+ REG_WR(bp, addr, U64_LO(mapping));
+ REG_WR(bp, addr + 4, U64_HI(mapping));
+}
+
+static inline void storm_memset_spq_addr(struct bnx2x *bp,
+ dma_addr_t mapping, u16 abs_fid)
+{
+ u32 addr = XSEM_REG_FAST_MEMORY +
+ XSTORM_SPQ_PAGE_BASE_OFFSET(abs_fid);
+
+ __storm_memset_dma_mapping(bp, addr, mapping);
+}
+
+static inline void storm_memset_vf_to_pf(struct bnx2x *bp, u16 abs_fid,
+ u16 pf_id)
+{
+ REG_WR8(bp, BAR_XSTRORM_INTMEM + XSTORM_VF_TO_PF_OFFSET(abs_fid),
+ pf_id);
+ REG_WR8(bp, BAR_CSTRORM_INTMEM + CSTORM_VF_TO_PF_OFFSET(abs_fid),
+ pf_id);
+ REG_WR8(bp, BAR_TSTRORM_INTMEM + TSTORM_VF_TO_PF_OFFSET(abs_fid),
+ pf_id);
+ REG_WR8(bp, BAR_USTRORM_INTMEM + USTORM_VF_TO_PF_OFFSET(abs_fid),
+ pf_id);
+}
+
+static inline void storm_memset_func_en(struct bnx2x *bp, u16 abs_fid,
+ u8 enable)
+{
+ REG_WR8(bp, BAR_XSTRORM_INTMEM + XSTORM_FUNC_EN_OFFSET(abs_fid),
+ enable);
+ REG_WR8(bp, BAR_CSTRORM_INTMEM + CSTORM_FUNC_EN_OFFSET(abs_fid),
+ enable);
+ REG_WR8(bp, BAR_TSTRORM_INTMEM + TSTORM_FUNC_EN_OFFSET(abs_fid),
+ enable);
+ REG_WR8(bp, BAR_USTRORM_INTMEM + USTORM_FUNC_EN_OFFSET(abs_fid),
+ enable);
+}
+
+static inline void storm_memset_eq_data(struct bnx2x *bp,
+ struct event_ring_data *eq_data,
+ u16 pfid)
+{
+ size_t size = sizeof(struct event_ring_data);
+
+ u32 addr = BAR_CSTRORM_INTMEM + CSTORM_EVENT_RING_DATA_OFFSET(pfid);
+
+ __storm_memset_struct(bp, addr, size, (u32 *)eq_data);
+}
+
+static inline void storm_memset_eq_prod(struct bnx2x *bp, u16 eq_prod,
+ u16 pfid)
+{
+ u32 addr = BAR_CSTRORM_INTMEM + CSTORM_EVENT_RING_PROD_OFFSET(pfid);
+ REG_WR16(bp, addr, eq_prod);
+}
+
+/* used only at init
+ * locking is done by mcp
+ */
+static void bnx2x_reg_wr_ind(struct bnx2x *bp, u32 addr, u32 val)
+{
+ pci_write_config_dword(bp->pdev, PCICFG_GRC_ADDRESS, addr);
+ pci_write_config_dword(bp->pdev, PCICFG_GRC_DATA, val);
+ pci_write_config_dword(bp->pdev, PCICFG_GRC_ADDRESS,
+ PCICFG_VENDOR_ID_OFFSET);
+}
+
+static u32 bnx2x_reg_rd_ind(struct bnx2x *bp, u32 addr)
+{
+ u32 val;
+
+ pci_write_config_dword(bp->pdev, PCICFG_GRC_ADDRESS, addr);
+ pci_read_config_dword(bp->pdev, PCICFG_GRC_DATA, &val);
+ pci_write_config_dword(bp->pdev, PCICFG_GRC_ADDRESS,
+ PCICFG_VENDOR_ID_OFFSET);
+
+ return val;
+}
+
+#define DMAE_DP_SRC_GRC "grc src_addr [%08x]"
+#define DMAE_DP_SRC_PCI "pci src_addr [%x:%08x]"
+#define DMAE_DP_DST_GRC "grc dst_addr [%08x]"
+#define DMAE_DP_DST_PCI "pci dst_addr [%x:%08x]"
+#define DMAE_DP_DST_NONE "dst_addr [none]"
+
+static void bnx2x_dp_dmae(struct bnx2x *bp, struct dmae_command *dmae,
+ int msglvl)
+{
+ u32 src_type = dmae->opcode & DMAE_COMMAND_SRC;
+
+ switch (dmae->opcode & DMAE_COMMAND_DST) {
+ case DMAE_CMD_DST_PCI:
+ if (src_type == DMAE_CMD_SRC_PCI)
+ DP(msglvl, "DMAE: opcode 0x%08x\n"
+ "src [%x:%08x], len [%d*4], dst [%x:%08x]\n"
+ "comp_addr [%x:%08x], comp_val 0x%08x\n",
+ dmae->opcode, dmae->src_addr_hi, dmae->src_addr_lo,
+ dmae->len, dmae->dst_addr_hi, dmae->dst_addr_lo,
+ dmae->comp_addr_hi, dmae->comp_addr_lo,
+ dmae->comp_val);
+ else
+ DP(msglvl, "DMAE: opcode 0x%08x\n"
+ "src [%08x], len [%d*4], dst [%x:%08x]\n"
+ "comp_addr [%x:%08x], comp_val 0x%08x\n",
+ dmae->opcode, dmae->src_addr_lo >> 2,
+ dmae->len, dmae->dst_addr_hi, dmae->dst_addr_lo,
+ dmae->comp_addr_hi, dmae->comp_addr_lo,
+ dmae->comp_val);
+ break;
+ case DMAE_CMD_DST_GRC:
+ if (src_type == DMAE_CMD_SRC_PCI)
+ DP(msglvl, "DMAE: opcode 0x%08x\n"
+ "src [%x:%08x], len [%d*4], dst_addr [%08x]\n"
+ "comp_addr [%x:%08x], comp_val 0x%08x\n",
+ dmae->opcode, dmae->src_addr_hi, dmae->src_addr_lo,
+ dmae->len, dmae->dst_addr_lo >> 2,
+ dmae->comp_addr_hi, dmae->comp_addr_lo,
+ dmae->comp_val);
+ else
+ DP(msglvl, "DMAE: opcode 0x%08x\n"
+ "src [%08x], len [%d*4], dst [%08x]\n"
+ "comp_addr [%x:%08x], comp_val 0x%08x\n",
+ dmae->opcode, dmae->src_addr_lo >> 2,
+ dmae->len, dmae->dst_addr_lo >> 2,
+ dmae->comp_addr_hi, dmae->comp_addr_lo,
+ dmae->comp_val);
+ break;
+ default:
+ if (src_type == DMAE_CMD_SRC_PCI)
+ DP(msglvl, "DMAE: opcode 0x%08x\n"
+ "src_addr [%x:%08x] len [%d * 4] dst_addr [none]\n"
+ "comp_addr [%x:%08x] comp_val 0x%08x\n",
+ dmae->opcode, dmae->src_addr_hi, dmae->src_addr_lo,
+ dmae->len, dmae->comp_addr_hi, dmae->comp_addr_lo,
+ dmae->comp_val);
+ else
+ DP(msglvl, "DMAE: opcode 0x%08x\n"
+ "src_addr [%08x] len [%d * 4] dst_addr [none]\n"
+ "comp_addr [%x:%08x] comp_val 0x%08x\n",
+ dmae->opcode, dmae->src_addr_lo >> 2,
+ dmae->len, dmae->comp_addr_hi, dmae->comp_addr_lo,
+ dmae->comp_val);
+ break;
+ }
+
+}
+
+/* copy command into DMAE command memory and set DMAE command go */
+void bnx2x_post_dmae(struct bnx2x *bp, struct dmae_command *dmae, int idx)
+{
+ u32 cmd_offset;
+ int i;
+
+ cmd_offset = (DMAE_REG_CMD_MEM + sizeof(struct dmae_command) * idx);
+ for (i = 0; i < (sizeof(struct dmae_command)/4); i++) {
+ REG_WR(bp, cmd_offset + i*4, *(((u32 *)dmae) + i));
+
+ DP(BNX2X_MSG_OFF, "DMAE cmd[%d].%d (0x%08x) : 0x%08x\n",
+ idx, i, cmd_offset + i*4, *(((u32 *)dmae) + i));
+ }
+ REG_WR(bp, dmae_reg_go_c[idx], 1);
+}
+
+u32 bnx2x_dmae_opcode_add_comp(u32 opcode, u8 comp_type)
+{
+ return opcode | ((comp_type << DMAE_COMMAND_C_DST_SHIFT) |
+ DMAE_CMD_C_ENABLE);
+}
+
+u32 bnx2x_dmae_opcode_clr_src_reset(u32 opcode)
+{
+ return opcode & ~DMAE_CMD_SRC_RESET;
+}
+
+u32 bnx2x_dmae_opcode(struct bnx2x *bp, u8 src_type, u8 dst_type,
+ bool with_comp, u8 comp_type)
+{
+ u32 opcode = 0;
+
+ opcode |= ((src_type << DMAE_COMMAND_SRC_SHIFT) |
+ (dst_type << DMAE_COMMAND_DST_SHIFT));
+
+ opcode |= (DMAE_CMD_SRC_RESET | DMAE_CMD_DST_RESET);
+
+ opcode |= (BP_PORT(bp) ? DMAE_CMD_PORT_1 : DMAE_CMD_PORT_0);
+ opcode |= ((BP_E1HVN(bp) << DMAE_CMD_E1HVN_SHIFT) |
+ (BP_E1HVN(bp) << DMAE_COMMAND_DST_VN_SHIFT));
+ opcode |= (DMAE_COM_SET_ERR << DMAE_COMMAND_ERR_POLICY_SHIFT);
+
+#ifdef __BIG_ENDIAN
+ opcode |= DMAE_CMD_ENDIANITY_B_DW_SWAP;
+#else
+ opcode |= DMAE_CMD_ENDIANITY_DW_SWAP;
+#endif
+ if (with_comp)
+ opcode = bnx2x_dmae_opcode_add_comp(opcode, comp_type);
+ return opcode;
+}
+
+static void bnx2x_prep_dmae_with_comp(struct bnx2x *bp,
+ struct dmae_command *dmae,
+ u8 src_type, u8 dst_type)
+{
+ memset(dmae, 0, sizeof(struct dmae_command));
+
+ /* set the opcode */
+ dmae->opcode = bnx2x_dmae_opcode(bp, src_type, dst_type,
+ true, DMAE_COMP_PCI);
+
+ /* fill in the completion parameters */
+ dmae->comp_addr_lo = U64_LO(bnx2x_sp_mapping(bp, wb_comp));
+ dmae->comp_addr_hi = U64_HI(bnx2x_sp_mapping(bp, wb_comp));
+ dmae->comp_val = DMAE_COMP_VAL;
+}
+
+/* issue a dmae command over the init-channel and wailt for completion */
+static int bnx2x_issue_dmae_with_comp(struct bnx2x *bp,
+ struct dmae_command *dmae)
+{
+ u32 *wb_comp = bnx2x_sp(bp, wb_comp);
+ int cnt = CHIP_REV_IS_SLOW(bp) ? (400000) : 4000;
+ int rc = 0;
+
+ DP(BNX2X_MSG_OFF, "data before [0x%08x 0x%08x 0x%08x 0x%08x]\n",
+ bp->slowpath->wb_data[0], bp->slowpath->wb_data[1],
+ bp->slowpath->wb_data[2], bp->slowpath->wb_data[3]);
+
+ /*
+ * Lock the dmae channel. Disable BHs to prevent a dead-lock
+ * as long as this code is called both from syscall context and
+ * from ndo_set_rx_mode() flow that may be called from BH.
+ */
+ spin_lock_bh(&bp->dmae_lock);
+
+ /* reset completion */
+ *wb_comp = 0;
+
+ /* post the command on the channel used for initializations */
+ bnx2x_post_dmae(bp, dmae, INIT_DMAE_C(bp));
+
+ /* wait for completion */
+ udelay(5);
+ while ((*wb_comp & ~DMAE_PCI_ERR_FLAG) != DMAE_COMP_VAL) {
+ DP(BNX2X_MSG_OFF, "wb_comp 0x%08x\n", *wb_comp);
+
+ if (!cnt) {
+ BNX2X_ERR("DMAE timeout!\n");
+ rc = DMAE_TIMEOUT;
+ goto unlock;
+ }
+ cnt--;
+ udelay(50);
+ }
+ if (*wb_comp & DMAE_PCI_ERR_FLAG) {
+ BNX2X_ERR("DMAE PCI error!\n");
+ rc = DMAE_PCI_ERROR;
+ }
+
+ DP(BNX2X_MSG_OFF, "data after [0x%08x 0x%08x 0x%08x 0x%08x]\n",
+ bp->slowpath->wb_data[0], bp->slowpath->wb_data[1],
+ bp->slowpath->wb_data[2], bp->slowpath->wb_data[3]);
+
+unlock:
+ spin_unlock_bh(&bp->dmae_lock);
+ return rc;
+}
+
+void bnx2x_write_dmae(struct bnx2x *bp, dma_addr_t dma_addr, u32 dst_addr,
+ u32 len32)
+{
+ struct dmae_command dmae;
+
+ if (!bp->dmae_ready) {
+ u32 *data = bnx2x_sp(bp, wb_data[0]);
+
+ DP(BNX2X_MSG_OFF, "DMAE is not ready (dst_addr %08x len32 %d)"
+ " using indirect\n", dst_addr, len32);
+ bnx2x_init_ind_wr(bp, dst_addr, data, len32);
+ return;
+ }
+
+ /* set opcode and fixed command fields */
+ bnx2x_prep_dmae_with_comp(bp, &dmae, DMAE_SRC_PCI, DMAE_DST_GRC);
+
+ /* fill in addresses and len */
+ dmae.src_addr_lo = U64_LO(dma_addr);
+ dmae.src_addr_hi = U64_HI(dma_addr);
+ dmae.dst_addr_lo = dst_addr >> 2;
+ dmae.dst_addr_hi = 0;
+ dmae.len = len32;
+
+ bnx2x_dp_dmae(bp, &dmae, BNX2X_MSG_OFF);
+
+ /* issue the command and wait for completion */
+ bnx2x_issue_dmae_with_comp(bp, &dmae);
+}
+
+void bnx2x_read_dmae(struct bnx2x *bp, u32 src_addr, u32 len32)
+{
+ struct dmae_command dmae;
+
+ if (!bp->dmae_ready) {
+ u32 *data = bnx2x_sp(bp, wb_data[0]);
+ int i;
+
+ DP(BNX2X_MSG_OFF, "DMAE is not ready (src_addr %08x len32 %d)"
+ " using indirect\n", src_addr, len32);
+ for (i = 0; i < len32; i++)
+ data[i] = bnx2x_reg_rd_ind(bp, src_addr + i*4);
+ return;
+ }
+
+ /* set opcode and fixed command fields */
+ bnx2x_prep_dmae_with_comp(bp, &dmae, DMAE_SRC_GRC, DMAE_DST_PCI);
+
+ /* fill in addresses and len */
+ dmae.src_addr_lo = src_addr >> 2;
+ dmae.src_addr_hi = 0;
+ dmae.dst_addr_lo = U64_LO(bnx2x_sp_mapping(bp, wb_data));
+ dmae.dst_addr_hi = U64_HI(bnx2x_sp_mapping(bp, wb_data));
+ dmae.len = len32;
+
+ bnx2x_dp_dmae(bp, &dmae, BNX2X_MSG_OFF);
+
+ /* issue the command and wait for completion */
+ bnx2x_issue_dmae_with_comp(bp, &dmae);
+}
+
+static void bnx2x_write_dmae_phys_len(struct bnx2x *bp, dma_addr_t phys_addr,
+ u32 addr, u32 len)
+{
+ int dmae_wr_max = DMAE_LEN32_WR_MAX(bp);
+ int offset = 0;
+
+ while (len > dmae_wr_max) {
+ bnx2x_write_dmae(bp, phys_addr + offset,
+ addr + offset, dmae_wr_max);
+ offset += dmae_wr_max * 4;
+ len -= dmae_wr_max;
+ }
+
+ bnx2x_write_dmae(bp, phys_addr + offset, addr + offset, len);
+}
+
+/* used only for slowpath so not inlined */
+static void bnx2x_wb_wr(struct bnx2x *bp, int reg, u32 val_hi, u32 val_lo)
+{
+ u32 wb_write[2];
+
+ wb_write[0] = val_hi;
+ wb_write[1] = val_lo;
+ REG_WR_DMAE(bp, reg, wb_write, 2);
+}
+
+#ifdef USE_WB_RD
+static u64 bnx2x_wb_rd(struct bnx2x *bp, int reg)
+{
+ u32 wb_data[2];
+
+ REG_RD_DMAE(bp, reg, wb_data, 2);
+
+ return HILO_U64(wb_data[0], wb_data[1]);
+}
+#endif
+
+static int bnx2x_mc_assert(struct bnx2x *bp)
+{
+ char last_idx;
+ int i, rc = 0;
+ u32 row0, row1, row2, row3;
+
+ /* XSTORM */
+ last_idx = REG_RD8(bp, BAR_XSTRORM_INTMEM +
+ XSTORM_ASSERT_LIST_INDEX_OFFSET);
+ if (last_idx)
+ BNX2X_ERR("XSTORM_ASSERT_LIST_INDEX 0x%x\n", last_idx);
+
+ /* print the asserts */
+ for (i = 0; i < STROM_ASSERT_ARRAY_SIZE; i++) {
+
+ row0 = REG_RD(bp, BAR_XSTRORM_INTMEM +
+ XSTORM_ASSERT_LIST_OFFSET(i));
+ row1 = REG_RD(bp, BAR_XSTRORM_INTMEM +
+ XSTORM_ASSERT_LIST_OFFSET(i) + 4);
+ row2 = REG_RD(bp, BAR_XSTRORM_INTMEM +
+ XSTORM_ASSERT_LIST_OFFSET(i) + 8);
+ row3 = REG_RD(bp, BAR_XSTRORM_INTMEM +
+ XSTORM_ASSERT_LIST_OFFSET(i) + 12);
+
+ if (row0 != COMMON_ASM_INVALID_ASSERT_OPCODE) {
+ BNX2X_ERR("XSTORM_ASSERT_INDEX 0x%x = 0x%08x"
+ " 0x%08x 0x%08x 0x%08x\n",
+ i, row3, row2, row1, row0);
+ rc++;
+ } else {
+ break;
+ }
+ }
+
+ /* TSTORM */
+ last_idx = REG_RD8(bp, BAR_TSTRORM_INTMEM +
+ TSTORM_ASSERT_LIST_INDEX_OFFSET);
+ if (last_idx)
+ BNX2X_ERR("TSTORM_ASSERT_LIST_INDEX 0x%x\n", last_idx);
+
+ /* print the asserts */
+ for (i = 0; i < STROM_ASSERT_ARRAY_SIZE; i++) {
+
+ row0 = REG_RD(bp, BAR_TSTRORM_INTMEM +
+ TSTORM_ASSERT_LIST_OFFSET(i));
+ row1 = REG_RD(bp, BAR_TSTRORM_INTMEM +
+ TSTORM_ASSERT_LIST_OFFSET(i) + 4);
+ row2 = REG_RD(bp, BAR_TSTRORM_INTMEM +
+ TSTORM_ASSERT_LIST_OFFSET(i) + 8);
+ row3 = REG_RD(bp, BAR_TSTRORM_INTMEM +
+ TSTORM_ASSERT_LIST_OFFSET(i) + 12);
+
+ if (row0 != COMMON_ASM_INVALID_ASSERT_OPCODE) {
+ BNX2X_ERR("TSTORM_ASSERT_INDEX 0x%x = 0x%08x"
+ " 0x%08x 0x%08x 0x%08x\n",
+ i, row3, row2, row1, row0);
+ rc++;
+ } else {
+ break;
+ }
+ }
+
+ /* CSTORM */
+ last_idx = REG_RD8(bp, BAR_CSTRORM_INTMEM +
+ CSTORM_ASSERT_LIST_INDEX_OFFSET);
+ if (last_idx)
+ BNX2X_ERR("CSTORM_ASSERT_LIST_INDEX 0x%x\n", last_idx);
+
+ /* print the asserts */
+ for (i = 0; i < STROM_ASSERT_ARRAY_SIZE; i++) {
+
+ row0 = REG_RD(bp, BAR_CSTRORM_INTMEM +
+ CSTORM_ASSERT_LIST_OFFSET(i));
+ row1 = REG_RD(bp, BAR_CSTRORM_INTMEM +
+ CSTORM_ASSERT_LIST_OFFSET(i) + 4);
+ row2 = REG_RD(bp, BAR_CSTRORM_INTMEM +
+ CSTORM_ASSERT_LIST_OFFSET(i) + 8);
+ row3 = REG_RD(bp, BAR_CSTRORM_INTMEM +
+ CSTORM_ASSERT_LIST_OFFSET(i) + 12);
+
+ if (row0 != COMMON_ASM_INVALID_ASSERT_OPCODE) {
+ BNX2X_ERR("CSTORM_ASSERT_INDEX 0x%x = 0x%08x"
+ " 0x%08x 0x%08x 0x%08x\n",
+ i, row3, row2, row1, row0);
+ rc++;
+ } else {
+ break;
+ }
+ }
+
+ /* USTORM */
+ last_idx = REG_RD8(bp, BAR_USTRORM_INTMEM +
+ USTORM_ASSERT_LIST_INDEX_OFFSET);
+ if (last_idx)
+ BNX2X_ERR("USTORM_ASSERT_LIST_INDEX 0x%x\n", last_idx);
+
+ /* print the asserts */
+ for (i = 0; i < STROM_ASSERT_ARRAY_SIZE; i++) {
+
+ row0 = REG_RD(bp, BAR_USTRORM_INTMEM +
+ USTORM_ASSERT_LIST_OFFSET(i));
+ row1 = REG_RD(bp, BAR_USTRORM_INTMEM +
+ USTORM_ASSERT_LIST_OFFSET(i) + 4);
+ row2 = REG_RD(bp, BAR_USTRORM_INTMEM +
+ USTORM_ASSERT_LIST_OFFSET(i) + 8);
+ row3 = REG_RD(bp, BAR_USTRORM_INTMEM +
+ USTORM_ASSERT_LIST_OFFSET(i) + 12);
+
+ if (row0 != COMMON_ASM_INVALID_ASSERT_OPCODE) {
+ BNX2X_ERR("USTORM_ASSERT_INDEX 0x%x = 0x%08x"
+ " 0x%08x 0x%08x 0x%08x\n",
+ i, row3, row2, row1, row0);
+ rc++;
+ } else {
+ break;
+ }
+ }
+
+ return rc;
+}
+
+void bnx2x_fw_dump_lvl(struct bnx2x *bp, const char *lvl)
+{
+ u32 addr, val;
+ u32 mark, offset;
+ __be32 data[9];
+ int word;
+ u32 trace_shmem_base;
+ if (BP_NOMCP(bp)) {
+ BNX2X_ERR("NO MCP - can not dump\n");
+ return;
+ }
+ netdev_printk(lvl, bp->dev, "bc %d.%d.%d\n",
+ (bp->common.bc_ver & 0xff0000) >> 16,
+ (bp->common.bc_ver & 0xff00) >> 8,
+ (bp->common.bc_ver & 0xff));
+
+ val = REG_RD(bp, MCP_REG_MCPR_CPU_PROGRAM_COUNTER);
+ if (val == REG_RD(bp, MCP_REG_MCPR_CPU_PROGRAM_COUNTER))
+ printk("%s" "MCP PC at 0x%x\n", lvl, val);
+
+ if (BP_PATH(bp) == 0)
+ trace_shmem_base = bp->common.shmem_base;
+ else
+ trace_shmem_base = SHMEM2_RD(bp, other_shmem_base_addr);
+ addr = trace_shmem_base - 0x0800 + 4;
+ mark = REG_RD(bp, addr);
+ mark = (CHIP_IS_E1x(bp) ? MCP_REG_MCPR_SCRATCH : MCP_A_REG_MCPR_SCRATCH)
+ + ((mark + 0x3) & ~0x3) - 0x08000000;
+ printk("%s" "begin fw dump (mark 0x%x)\n", lvl, mark);
+
+ printk("%s", lvl);
+ for (offset = mark; offset <= trace_shmem_base; offset += 0x8*4) {
+ for (word = 0; word < 8; word++)
+ data[word] = htonl(REG_RD(bp, offset + 4*word));
+ data[8] = 0x0;
+ pr_cont("%s", (char *)data);
+ }
+ for (offset = addr + 4; offset <= mark; offset += 0x8*4) {
+ for (word = 0; word < 8; word++)
+ data[word] = htonl(REG_RD(bp, offset + 4*word));
+ data[8] = 0x0;
+ pr_cont("%s", (char *)data);
+ }
+ printk("%s" "end of fw dump\n", lvl);
+}
+
+static inline void bnx2x_fw_dump(struct bnx2x *bp)
+{
+ bnx2x_fw_dump_lvl(bp, KERN_ERR);
+}
+
+void bnx2x_panic_dump(struct bnx2x *bp)
+{
+ int i;
+ u16 j;
+ struct hc_sp_status_block_data sp_sb_data;
+ int func = BP_FUNC(bp);
+#ifdef BNX2X_STOP_ON_ERROR
+ u16 start = 0, end = 0;
+ u8 cos;
+#endif
+
+ bp->stats_state = STATS_STATE_DISABLED;
+ DP(BNX2X_MSG_STATS, "stats_state - DISABLED\n");
+
+ BNX2X_ERR("begin crash dump -----------------\n");
+
+ /* Indices */
+ /* Common */
+ BNX2X_ERR("def_idx(0x%x) def_att_idx(0x%x) attn_state(0x%x)"
+ " spq_prod_idx(0x%x) next_stats_cnt(0x%x)\n",
+ bp->def_idx, bp->def_att_idx, bp->attn_state,
+ bp->spq_prod_idx, bp->stats_counter);
+ BNX2X_ERR("DSB: attn bits(0x%x) ack(0x%x) id(0x%x) idx(0x%x)\n",
+ bp->def_status_blk->atten_status_block.attn_bits,
+ bp->def_status_blk->atten_status_block.attn_bits_ack,
+ bp->def_status_blk->atten_status_block.status_block_id,
+ bp->def_status_blk->atten_status_block.attn_bits_index);
+ BNX2X_ERR(" def (");
+ for (i = 0; i < HC_SP_SB_MAX_INDICES; i++)
+ pr_cont("0x%x%s",
+ bp->def_status_blk->sp_sb.index_values[i],
+ (i == HC_SP_SB_MAX_INDICES - 1) ? ") " : " ");
+
+ for (i = 0; i < sizeof(struct hc_sp_status_block_data)/sizeof(u32); i++)
+ *((u32 *)&sp_sb_data + i) = REG_RD(bp, BAR_CSTRORM_INTMEM +
+ CSTORM_SP_STATUS_BLOCK_DATA_OFFSET(func) +
+ i*sizeof(u32));
+
+ pr_cont("igu_sb_id(0x%x) igu_seg_id(0x%x) pf_id(0x%x) vnic_id(0x%x) vf_id(0x%x) vf_valid (0x%x) state(0x%x)\n",
+ sp_sb_data.igu_sb_id,
+ sp_sb_data.igu_seg_id,
+ sp_sb_data.p_func.pf_id,
+ sp_sb_data.p_func.vnic_id,
+ sp_sb_data.p_func.vf_id,
+ sp_sb_data.p_func.vf_valid,
+ sp_sb_data.state);
+
+
+ for_each_eth_queue(bp, i) {
+ struct bnx2x_fastpath *fp = &bp->fp[i];
+ int loop;
+ struct hc_status_block_data_e2 sb_data_e2;
+ struct hc_status_block_data_e1x sb_data_e1x;
+ struct hc_status_block_sm *hc_sm_p =
+ CHIP_IS_E1x(bp) ?
+ sb_data_e1x.common.state_machine :
+ sb_data_e2.common.state_machine;
+ struct hc_index_data *hc_index_p =
+ CHIP_IS_E1x(bp) ?
+ sb_data_e1x.index_data :
+ sb_data_e2.index_data;
+ u8 data_size, cos;
+ u32 *sb_data_p;
+ struct bnx2x_fp_txdata txdata;
+
+ /* Rx */
+ BNX2X_ERR("fp%d: rx_bd_prod(0x%x) rx_bd_cons(0x%x)"
+ " rx_comp_prod(0x%x)"
+ " rx_comp_cons(0x%x) *rx_cons_sb(0x%x)\n",
+ i, fp->rx_bd_prod, fp->rx_bd_cons,
+ fp->rx_comp_prod,
+ fp->rx_comp_cons, le16_to_cpu(*fp->rx_cons_sb));
+ BNX2X_ERR(" rx_sge_prod(0x%x) last_max_sge(0x%x)"
+ " fp_hc_idx(0x%x)\n",
+ fp->rx_sge_prod, fp->last_max_sge,
+ le16_to_cpu(fp->fp_hc_idx));
+
+ /* Tx */
+ for_each_cos_in_tx_queue(fp, cos)
+ {
+ txdata = fp->txdata[cos];
+ BNX2X_ERR("fp%d: tx_pkt_prod(0x%x) tx_pkt_cons(0x%x)"
+ " tx_bd_prod(0x%x) tx_bd_cons(0x%x)"
+ " *tx_cons_sb(0x%x)\n",
+ i, txdata.tx_pkt_prod,
+ txdata.tx_pkt_cons, txdata.tx_bd_prod,
+ txdata.tx_bd_cons,
+ le16_to_cpu(*txdata.tx_cons_sb));
+ }
+
+ loop = CHIP_IS_E1x(bp) ?
+ HC_SB_MAX_INDICES_E1X : HC_SB_MAX_INDICES_E2;
+
+ /* host sb data */
+
+#ifdef BCM_CNIC
+ if (IS_FCOE_FP(fp))
+ continue;
+#endif
+ BNX2X_ERR(" run indexes (");
+ for (j = 0; j < HC_SB_MAX_SM; j++)
+ pr_cont("0x%x%s",
+ fp->sb_running_index[j],
+ (j == HC_SB_MAX_SM - 1) ? ")" : " ");
+
+ BNX2X_ERR(" indexes (");
+ for (j = 0; j < loop; j++)
+ pr_cont("0x%x%s",
+ fp->sb_index_values[j],
+ (j == loop - 1) ? ")" : " ");
+ /* fw sb data */
+ data_size = CHIP_IS_E1x(bp) ?
+ sizeof(struct hc_status_block_data_e1x) :
+ sizeof(struct hc_status_block_data_e2);
+ data_size /= sizeof(u32);
+ sb_data_p = CHIP_IS_E1x(bp) ?
+ (u32 *)&sb_data_e1x :
+ (u32 *)&sb_data_e2;
+ /* copy sb data in here */
+ for (j = 0; j < data_size; j++)
+ *(sb_data_p + j) = REG_RD(bp, BAR_CSTRORM_INTMEM +
+ CSTORM_STATUS_BLOCK_DATA_OFFSET(fp->fw_sb_id) +
+ j * sizeof(u32));
+
+ if (!CHIP_IS_E1x(bp)) {
+ pr_cont("pf_id(0x%x) vf_id(0x%x) vf_valid(0x%x) "
+ "vnic_id(0x%x) same_igu_sb_1b(0x%x) "
+ "state(0x%x)\n",
+ sb_data_e2.common.p_func.pf_id,
+ sb_data_e2.common.p_func.vf_id,
+ sb_data_e2.common.p_func.vf_valid,
+ sb_data_e2.common.p_func.vnic_id,
+ sb_data_e2.common.same_igu_sb_1b,
+ sb_data_e2.common.state);
+ } else {
+ pr_cont("pf_id(0x%x) vf_id(0x%x) vf_valid(0x%x) "
+ "vnic_id(0x%x) same_igu_sb_1b(0x%x) "
+ "state(0x%x)\n",
+ sb_data_e1x.common.p_func.pf_id,
+ sb_data_e1x.common.p_func.vf_id,
+ sb_data_e1x.common.p_func.vf_valid,
+ sb_data_e1x.common.p_func.vnic_id,
+ sb_data_e1x.common.same_igu_sb_1b,
+ sb_data_e1x.common.state);
+ }
+
+ /* SB_SMs data */
+ for (j = 0; j < HC_SB_MAX_SM; j++) {
+ pr_cont("SM[%d] __flags (0x%x) "
+ "igu_sb_id (0x%x) igu_seg_id(0x%x) "
+ "time_to_expire (0x%x) "
+ "timer_value(0x%x)\n", j,
+ hc_sm_p[j].__flags,
+ hc_sm_p[j].igu_sb_id,
+ hc_sm_p[j].igu_seg_id,
+ hc_sm_p[j].time_to_expire,
+ hc_sm_p[j].timer_value);
+ }
+
+ /* Indecies data */
+ for (j = 0; j < loop; j++) {
+ pr_cont("INDEX[%d] flags (0x%x) "
+ "timeout (0x%x)\n", j,
+ hc_index_p[j].flags,
+ hc_index_p[j].timeout);
+ }
+ }
+
+#ifdef BNX2X_STOP_ON_ERROR
+ /* Rings */
+ /* Rx */
+ for_each_rx_queue(bp, i) {
+ struct bnx2x_fastpath *fp = &bp->fp[i];
+
+ start = RX_BD(le16_to_cpu(*fp->rx_cons_sb) - 10);
+ end = RX_BD(le16_to_cpu(*fp->rx_cons_sb) + 503);
+ for (j = start; j != end; j = RX_BD(j + 1)) {
+ u32 *rx_bd = (u32 *)&fp->rx_desc_ring[j];
+ struct sw_rx_bd *sw_bd = &fp->rx_buf_ring[j];
+
+ BNX2X_ERR("fp%d: rx_bd[%x]=[%x:%x] sw_bd=[%p]\n",
+ i, j, rx_bd[1], rx_bd[0], sw_bd->skb);
+ }
+
+ start = RX_SGE(fp->rx_sge_prod);
+ end = RX_SGE(fp->last_max_sge);
+ for (j = start; j != end; j = RX_SGE(j + 1)) {
+ u32 *rx_sge = (u32 *)&fp->rx_sge_ring[j];
+ struct sw_rx_page *sw_page = &fp->rx_page_ring[j];
+
+ BNX2X_ERR("fp%d: rx_sge[%x]=[%x:%x] sw_page=[%p]\n",
+ i, j, rx_sge[1], rx_sge[0], sw_page->page);
+ }
+
+ start = RCQ_BD(fp->rx_comp_cons - 10);
+ end = RCQ_BD(fp->rx_comp_cons + 503);
+ for (j = start; j != end; j = RCQ_BD(j + 1)) {
+ u32 *cqe = (u32 *)&fp->rx_comp_ring[j];
+
+ BNX2X_ERR("fp%d: cqe[%x]=[%x:%x:%x:%x]\n",
+ i, j, cqe[0], cqe[1], cqe[2], cqe[3]);
+ }
+ }
+
+ /* Tx */
+ for_each_tx_queue(bp, i) {
+ struct bnx2x_fastpath *fp = &bp->fp[i];
+ for_each_cos_in_tx_queue(fp, cos) {
+ struct bnx2x_fp_txdata *txdata = &fp->txdata[cos];
+
+ start = TX_BD(le16_to_cpu(*txdata->tx_cons_sb) - 10);
+ end = TX_BD(le16_to_cpu(*txdata->tx_cons_sb) + 245);
+ for (j = start; j != end; j = TX_BD(j + 1)) {
+ struct sw_tx_bd *sw_bd =
+ &txdata->tx_buf_ring[j];
+
+ BNX2X_ERR("fp%d: txdata %d, "
+ "packet[%x]=[%p,%x]\n",
+ i, cos, j, sw_bd->skb,
+ sw_bd->first_bd);
+ }
+
+ start = TX_BD(txdata->tx_bd_cons - 10);
+ end = TX_BD(txdata->tx_bd_cons + 254);
+ for (j = start; j != end; j = TX_BD(j + 1)) {
+ u32 *tx_bd = (u32 *)&txdata->tx_desc_ring[j];
+
+ BNX2X_ERR("fp%d: txdata %d, tx_bd[%x]="
+ "[%x:%x:%x:%x]\n",
+ i, cos, j, tx_bd[0], tx_bd[1],
+ tx_bd[2], tx_bd[3]);
+ }
+ }
+ }
+#endif
+ bnx2x_fw_dump(bp);
+ bnx2x_mc_assert(bp);
+ BNX2X_ERR("end crash dump -----------------\n");
+}
+
+/*
+ * FLR Support for E2
+ *
+ * bnx2x_pf_flr_clnup() is called during nic_load in the per function HW
+ * initialization.
+ */
+#define FLR_WAIT_USEC 10000 /* 10 miliseconds */
+#define FLR_WAIT_INTERAVAL 50 /* usec */
+#define FLR_POLL_CNT (FLR_WAIT_USEC/FLR_WAIT_INTERAVAL) /* 200 */
+
+struct pbf_pN_buf_regs {
+ int pN;
+ u32 init_crd;
+ u32 crd;
+ u32 crd_freed;
+};
+
+struct pbf_pN_cmd_regs {
+ int pN;
+ u32 lines_occup;
+ u32 lines_freed;
+};
+
+static void bnx2x_pbf_pN_buf_flushed(struct bnx2x *bp,
+ struct pbf_pN_buf_regs *regs,
+ u32 poll_count)
+{
+ u32 init_crd, crd, crd_start, crd_freed, crd_freed_start;
+ u32 cur_cnt = poll_count;
+
+ crd_freed = crd_freed_start = REG_RD(bp, regs->crd_freed);
+ crd = crd_start = REG_RD(bp, regs->crd);
+ init_crd = REG_RD(bp, regs->init_crd);
+
+ DP(BNX2X_MSG_SP, "INIT CREDIT[%d] : %x\n", regs->pN, init_crd);
+ DP(BNX2X_MSG_SP, "CREDIT[%d] : s:%x\n", regs->pN, crd);
+ DP(BNX2X_MSG_SP, "CREDIT_FREED[%d]: s:%x\n", regs->pN, crd_freed);
+
+ while ((crd != init_crd) && ((u32)SUB_S32(crd_freed, crd_freed_start) <
+ (init_crd - crd_start))) {
+ if (cur_cnt--) {
+ udelay(FLR_WAIT_INTERAVAL);
+ crd = REG_RD(bp, regs->crd);
+ crd_freed = REG_RD(bp, regs->crd_freed);
+ } else {
+ DP(BNX2X_MSG_SP, "PBF tx buffer[%d] timed out\n",
+ regs->pN);
+ DP(BNX2X_MSG_SP, "CREDIT[%d] : c:%x\n",
+ regs->pN, crd);
+ DP(BNX2X_MSG_SP, "CREDIT_FREED[%d]: c:%x\n",
+ regs->pN, crd_freed);
+ break;
+ }
+ }
+ DP(BNX2X_MSG_SP, "Waited %d*%d usec for PBF tx buffer[%d]\n",
+ poll_count-cur_cnt, FLR_WAIT_INTERAVAL, regs->pN);
+}
+
+static void bnx2x_pbf_pN_cmd_flushed(struct bnx2x *bp,
+ struct pbf_pN_cmd_regs *regs,
+ u32 poll_count)
+{
+ u32 occup, to_free, freed, freed_start;
+ u32 cur_cnt = poll_count;
+
+ occup = to_free = REG_RD(bp, regs->lines_occup);
+ freed = freed_start = REG_RD(bp, regs->lines_freed);
+
+ DP(BNX2X_MSG_SP, "OCCUPANCY[%d] : s:%x\n", regs->pN, occup);
+ DP(BNX2X_MSG_SP, "LINES_FREED[%d] : s:%x\n", regs->pN, freed);
+
+ while (occup && ((u32)SUB_S32(freed, freed_start) < to_free)) {
+ if (cur_cnt--) {
+ udelay(FLR_WAIT_INTERAVAL);
+ occup = REG_RD(bp, regs->lines_occup);
+ freed = REG_RD(bp, regs->lines_freed);
+ } else {
+ DP(BNX2X_MSG_SP, "PBF cmd queue[%d] timed out\n",
+ regs->pN);
+ DP(BNX2X_MSG_SP, "OCCUPANCY[%d] : s:%x\n",
+ regs->pN, occup);
+ DP(BNX2X_MSG_SP, "LINES_FREED[%d] : s:%x\n",
+ regs->pN, freed);
+ break;
+ }
+ }
+ DP(BNX2X_MSG_SP, "Waited %d*%d usec for PBF cmd queue[%d]\n",
+ poll_count-cur_cnt, FLR_WAIT_INTERAVAL, regs->pN);
+}
+
+static inline u32 bnx2x_flr_clnup_reg_poll(struct bnx2x *bp, u32 reg,
+ u32 expected, u32 poll_count)
+{
+ u32 cur_cnt = poll_count;
+ u32 val;
+
+ while ((val = REG_RD(bp, reg)) != expected && cur_cnt--)
+ udelay(FLR_WAIT_INTERAVAL);
+
+ return val;
+}
+
+static inline int bnx2x_flr_clnup_poll_hw_counter(struct bnx2x *bp, u32 reg,
+ char *msg, u32 poll_cnt)
+{
+ u32 val = bnx2x_flr_clnup_reg_poll(bp, reg, 0, poll_cnt);
+ if (val != 0) {
+ BNX2X_ERR("%s usage count=%d\n", msg, val);
+ return 1;
+ }
+ return 0;
+}
+
+static u32 bnx2x_flr_clnup_poll_count(struct bnx2x *bp)
+{
+ /* adjust polling timeout */
+ if (CHIP_REV_IS_EMUL(bp))
+ return FLR_POLL_CNT * 2000;
+
+ if (CHIP_REV_IS_FPGA(bp))
+ return FLR_POLL_CNT * 120;
+
+ return FLR_POLL_CNT;
+}
+
+static void bnx2x_tx_hw_flushed(struct bnx2x *bp, u32 poll_count)
+{
+ struct pbf_pN_cmd_regs cmd_regs[] = {
+ {0, (CHIP_IS_E3B0(bp)) ?
+ PBF_REG_TQ_OCCUPANCY_Q0 :
+ PBF_REG_P0_TQ_OCCUPANCY,
+ (CHIP_IS_E3B0(bp)) ?
+ PBF_REG_TQ_LINES_FREED_CNT_Q0 :
+ PBF_REG_P0_TQ_LINES_FREED_CNT},
+ {1, (CHIP_IS_E3B0(bp)) ?
+ PBF_REG_TQ_OCCUPANCY_Q1 :
+ PBF_REG_P1_TQ_OCCUPANCY,
+ (CHIP_IS_E3B0(bp)) ?
+ PBF_REG_TQ_LINES_FREED_CNT_Q1 :
+ PBF_REG_P1_TQ_LINES_FREED_CNT},
+ {4, (CHIP_IS_E3B0(bp)) ?
+ PBF_REG_TQ_OCCUPANCY_LB_Q :
+ PBF_REG_P4_TQ_OCCUPANCY,
+ (CHIP_IS_E3B0(bp)) ?
+ PBF_REG_TQ_LINES_FREED_CNT_LB_Q :
+ PBF_REG_P4_TQ_LINES_FREED_CNT}
+ };
+
+ struct pbf_pN_buf_regs buf_regs[] = {
+ {0, (CHIP_IS_E3B0(bp)) ?
+ PBF_REG_INIT_CRD_Q0 :
+ PBF_REG_P0_INIT_CRD ,
+ (CHIP_IS_E3B0(bp)) ?
+ PBF_REG_CREDIT_Q0 :
+ PBF_REG_P0_CREDIT,
+ (CHIP_IS_E3B0(bp)) ?
+ PBF_REG_INTERNAL_CRD_FREED_CNT_Q0 :
+ PBF_REG_P0_INTERNAL_CRD_FREED_CNT},
+ {1, (CHIP_IS_E3B0(bp)) ?
+ PBF_REG_INIT_CRD_Q1 :
+ PBF_REG_P1_INIT_CRD,
+ (CHIP_IS_E3B0(bp)) ?
+ PBF_REG_CREDIT_Q1 :
+ PBF_REG_P1_CREDIT,
+ (CHIP_IS_E3B0(bp)) ?
+ PBF_REG_INTERNAL_CRD_FREED_CNT_Q1 :
+ PBF_REG_P1_INTERNAL_CRD_FREED_CNT},
+ {4, (CHIP_IS_E3B0(bp)) ?
+ PBF_REG_INIT_CRD_LB_Q :
+ PBF_REG_P4_INIT_CRD,
+ (CHIP_IS_E3B0(bp)) ?
+ PBF_REG_CREDIT_LB_Q :
+ PBF_REG_P4_CREDIT,
+ (CHIP_IS_E3B0(bp)) ?
+ PBF_REG_INTERNAL_CRD_FREED_CNT_LB_Q :
+ PBF_REG_P4_INTERNAL_CRD_FREED_CNT},
+ };
+
+ int i;
+
+ /* Verify the command queues are flushed P0, P1, P4 */
+ for (i = 0; i < ARRAY_SIZE(cmd_regs); i++)
+ bnx2x_pbf_pN_cmd_flushed(bp, &cmd_regs[i], poll_count);
+
+
+ /* Verify the transmission buffers are flushed P0, P1, P4 */
+ for (i = 0; i < ARRAY_SIZE(buf_regs); i++)
+ bnx2x_pbf_pN_buf_flushed(bp, &buf_regs[i], poll_count);
+}
+
+#define OP_GEN_PARAM(param) \
+ (((param) << SDM_OP_GEN_COMP_PARAM_SHIFT) & SDM_OP_GEN_COMP_PARAM)
+
+#define OP_GEN_TYPE(type) \
+ (((type) << SDM_OP_GEN_COMP_TYPE_SHIFT) & SDM_OP_GEN_COMP_TYPE)
+
+#define OP_GEN_AGG_VECT(index) \
+ (((index) << SDM_OP_GEN_AGG_VECT_IDX_SHIFT) & SDM_OP_GEN_AGG_VECT_IDX)
+
+
+static inline int bnx2x_send_final_clnup(struct bnx2x *bp, u8 clnup_func,
+ u32 poll_cnt)
+{
+ struct sdm_op_gen op_gen = {0};
+
+ u32 comp_addr = BAR_CSTRORM_INTMEM +
+ CSTORM_FINAL_CLEANUP_COMPLETE_OFFSET(clnup_func);
+ int ret = 0;
+
+ if (REG_RD(bp, comp_addr)) {
+ BNX2X_ERR("Cleanup complete is not 0\n");
+ return 1;
+ }
+
+ op_gen.command |= OP_GEN_PARAM(XSTORM_AGG_INT_FINAL_CLEANUP_INDEX);
+ op_gen.command |= OP_GEN_TYPE(XSTORM_AGG_INT_FINAL_CLEANUP_COMP_TYPE);
+ op_gen.command |= OP_GEN_AGG_VECT(clnup_func);
+ op_gen.command |= 1 << SDM_OP_GEN_AGG_VECT_IDX_VALID_SHIFT;
+
+ DP(BNX2X_MSG_SP, "FW Final cleanup\n");
+ REG_WR(bp, XSDM_REG_OPERATION_GEN, op_gen.command);
+
+ if (bnx2x_flr_clnup_reg_poll(bp, comp_addr, 1, poll_cnt) != 1) {
+ BNX2X_ERR("FW final cleanup did not succeed\n");
+ ret = 1;
+ }
+ /* Zero completion for nxt FLR */
+ REG_WR(bp, comp_addr, 0);
+
+ return ret;
+}
+
+static inline u8 bnx2x_is_pcie_pending(struct pci_dev *dev)
+{
+ int pos;
+ u16 status;
+
+ pos = pci_pcie_cap(dev);
+ if (!pos)
+ return false;
+
+ pci_read_config_word(dev, pos + PCI_EXP_DEVSTA, &status);
+ return status & PCI_EXP_DEVSTA_TRPND;
+}
+
+/* PF FLR specific routines
+*/
+static int bnx2x_poll_hw_usage_counters(struct bnx2x *bp, u32 poll_cnt)
+{
+
+ /* wait for CFC PF usage-counter to zero (includes all the VFs) */
+ if (bnx2x_flr_clnup_poll_hw_counter(bp,
+ CFC_REG_NUM_LCIDS_INSIDE_PF,
+ "CFC PF usage counter timed out",
+ poll_cnt))
+ return 1;
+
+
+ /* Wait for DQ PF usage-counter to zero (until DQ cleanup) */
+ if (bnx2x_flr_clnup_poll_hw_counter(bp,
+ DORQ_REG_PF_USAGE_CNT,
+ "DQ PF usage counter timed out",
+ poll_cnt))
+ return 1;
+
+ /* Wait for QM PF usage-counter to zero (until DQ cleanup) */
+ if (bnx2x_flr_clnup_poll_hw_counter(bp,
+ QM_REG_PF_USG_CNT_0 + 4*BP_FUNC(bp),
+ "QM PF usage counter timed out",
+ poll_cnt))
+ return 1;
+
+ /* Wait for Timer PF usage-counters to zero (until DQ cleanup) */
+ if (bnx2x_flr_clnup_poll_hw_counter(bp,
+ TM_REG_LIN0_VNIC_UC + 4*BP_PORT(bp),
+ "Timers VNIC usage counter timed out",
+ poll_cnt))
+ return 1;
+ if (bnx2x_flr_clnup_poll_hw_counter(bp,
+ TM_REG_LIN0_NUM_SCANS + 4*BP_PORT(bp),
+ "Timers NUM_SCANS usage counter timed out",
+ poll_cnt))
+ return 1;
+
+ /* Wait DMAE PF usage counter to zero */
+ if (bnx2x_flr_clnup_poll_hw_counter(bp,
+ dmae_reg_go_c[INIT_DMAE_C(bp)],
+ "DMAE dommand register timed out",
+ poll_cnt))
+ return 1;
+
+ return 0;
+}
+
+static void bnx2x_hw_enable_status(struct bnx2x *bp)
+{
+ u32 val;
+
+ val = REG_RD(bp, CFC_REG_WEAK_ENABLE_PF);
+ DP(BNX2X_MSG_SP, "CFC_REG_WEAK_ENABLE_PF is 0x%x\n", val);
+
+ val = REG_RD(bp, PBF_REG_DISABLE_PF);
+ DP(BNX2X_MSG_SP, "PBF_REG_DISABLE_PF is 0x%x\n", val);
+
+ val = REG_RD(bp, IGU_REG_PCI_PF_MSI_EN);
+ DP(BNX2X_MSG_SP, "IGU_REG_PCI_PF_MSI_EN is 0x%x\n", val);
+
+ val = REG_RD(bp, IGU_REG_PCI_PF_MSIX_EN);
+ DP(BNX2X_MSG_SP, "IGU_REG_PCI_PF_MSIX_EN is 0x%x\n", val);
+
+ val = REG_RD(bp, IGU_REG_PCI_PF_MSIX_FUNC_MASK);
+ DP(BNX2X_MSG_SP, "IGU_REG_PCI_PF_MSIX_FUNC_MASK is 0x%x\n", val);
+
+ val = REG_RD(bp, PGLUE_B_REG_SHADOW_BME_PF_7_0_CLR);
+ DP(BNX2X_MSG_SP, "PGLUE_B_REG_SHADOW_BME_PF_7_0_CLR is 0x%x\n", val);
+
+ val = REG_RD(bp, PGLUE_B_REG_FLR_REQUEST_PF_7_0_CLR);
+ DP(BNX2X_MSG_SP, "PGLUE_B_REG_FLR_REQUEST_PF_7_0_CLR is 0x%x\n", val);
+
+ val = REG_RD(bp, PGLUE_B_REG_INTERNAL_PFID_ENABLE_MASTER);
+ DP(BNX2X_MSG_SP, "PGLUE_B_REG_INTERNAL_PFID_ENABLE_MASTER is 0x%x\n",
+ val);
+}
+
+static int bnx2x_pf_flr_clnup(struct bnx2x *bp)
+{
+ u32 poll_cnt = bnx2x_flr_clnup_poll_count(bp);
+
+ DP(BNX2X_MSG_SP, "Cleanup after FLR PF[%d]\n", BP_ABS_FUNC(bp));
+
+ /* Re-enable PF target read access */
+ REG_WR(bp, PGLUE_B_REG_INTERNAL_PFID_ENABLE_TARGET_READ, 1);
+
+ /* Poll HW usage counters */
+ if (bnx2x_poll_hw_usage_counters(bp, poll_cnt))
+ return -EBUSY;
+
+ /* Zero the igu 'trailing edge' and 'leading edge' */
+
+ /* Send the FW cleanup command */
+ if (bnx2x_send_final_clnup(bp, (u8)BP_FUNC(bp), poll_cnt))
+ return -EBUSY;
+
+ /* ATC cleanup */
+
+ /* Verify TX hw is flushed */
+ bnx2x_tx_hw_flushed(bp, poll_cnt);
+
+ /* Wait 100ms (not adjusted according to platform) */
+ msleep(100);
+
+ /* Verify no pending pci transactions */
+ if (bnx2x_is_pcie_pending(bp->pdev))
+ BNX2X_ERR("PCIE Transactions still pending\n");
+
+ /* Debug */
+ bnx2x_hw_enable_status(bp);
+
+ /*
+ * Master enable - Due to WB DMAE writes performed before this
+ * register is re-initialized as part of the regular function init
+ */
+ REG_WR(bp, PGLUE_B_REG_INTERNAL_PFID_ENABLE_MASTER, 1);
+
+ return 0;
+}
+
+static void bnx2x_hc_int_enable(struct bnx2x *bp)
+{
+ int port = BP_PORT(bp);
+ u32 addr = port ? HC_REG_CONFIG_1 : HC_REG_CONFIG_0;
+ u32 val = REG_RD(bp, addr);
+ int msix = (bp->flags & USING_MSIX_FLAG) ? 1 : 0;
+ int msi = (bp->flags & USING_MSI_FLAG) ? 1 : 0;
+
+ if (msix) {
+ val &= ~(HC_CONFIG_0_REG_SINGLE_ISR_EN_0 |
+ HC_CONFIG_0_REG_INT_LINE_EN_0);
+ val |= (HC_CONFIG_0_REG_MSI_MSIX_INT_EN_0 |
+ HC_CONFIG_0_REG_ATTN_BIT_EN_0);
+ } else if (msi) {
+ val &= ~HC_CONFIG_0_REG_INT_LINE_EN_0;
+ val |= (HC_CONFIG_0_REG_SINGLE_ISR_EN_0 |
+ HC_CONFIG_0_REG_MSI_MSIX_INT_EN_0 |
+ HC_CONFIG_0_REG_ATTN_BIT_EN_0);
+ } else {
+ val |= (HC_CONFIG_0_REG_SINGLE_ISR_EN_0 |
+ HC_CONFIG_0_REG_MSI_MSIX_INT_EN_0 |
+ HC_CONFIG_0_REG_INT_LINE_EN_0 |
+ HC_CONFIG_0_REG_ATTN_BIT_EN_0);
+
+ if (!CHIP_IS_E1(bp)) {
+ DP(NETIF_MSG_INTR, "write %x to HC %d (addr 0x%x)\n",
+ val, port, addr);
+
+ REG_WR(bp, addr, val);
+
+ val &= ~HC_CONFIG_0_REG_MSI_MSIX_INT_EN_0;
+ }
+ }
+
+ if (CHIP_IS_E1(bp))
+ REG_WR(bp, HC_REG_INT_MASK + port*4, 0x1FFFF);
+
+ DP(NETIF_MSG_INTR, "write %x to HC %d (addr 0x%x) mode %s\n",
+ val, port, addr, (msix ? "MSI-X" : (msi ? "MSI" : "INTx")));
+
+ REG_WR(bp, addr, val);
+ /*
+ * Ensure that HC_CONFIG is written before leading/trailing edge config
+ */
+ mmiowb();
+ barrier();
+
+ if (!CHIP_IS_E1(bp)) {
+ /* init leading/trailing edge */
+ if (IS_MF(bp)) {
+ val = (0xee0f | (1 << (BP_E1HVN(bp) + 4)));
+ if (bp->port.pmf)
+ /* enable nig and gpio3 attention */
+ val |= 0x1100;
+ } else
+ val = 0xffff;
+
+ REG_WR(bp, HC_REG_TRAILING_EDGE_0 + port*8, val);
+ REG_WR(bp, HC_REG_LEADING_EDGE_0 + port*8, val);
+ }
+
+ /* Make sure that interrupts are indeed enabled from here on */
+ mmiowb();
+}
+
+static void bnx2x_igu_int_enable(struct bnx2x *bp)
+{
+ u32 val;
+ int msix = (bp->flags & USING_MSIX_FLAG) ? 1 : 0;
+ int msi = (bp->flags & USING_MSI_FLAG) ? 1 : 0;
+
+ val = REG_RD(bp, IGU_REG_PF_CONFIGURATION);
+
+ if (msix) {
+ val &= ~(IGU_PF_CONF_INT_LINE_EN |
+ IGU_PF_CONF_SINGLE_ISR_EN);
+ val |= (IGU_PF_CONF_FUNC_EN |
+ IGU_PF_CONF_MSI_MSIX_EN |
+ IGU_PF_CONF_ATTN_BIT_EN);
+ } else if (msi) {
+ val &= ~IGU_PF_CONF_INT_LINE_EN;
+ val |= (IGU_PF_CONF_FUNC_EN |
+ IGU_PF_CONF_MSI_MSIX_EN |
+ IGU_PF_CONF_ATTN_BIT_EN |
+ IGU_PF_CONF_SINGLE_ISR_EN);
+ } else {
+ val &= ~IGU_PF_CONF_MSI_MSIX_EN;
+ val |= (IGU_PF_CONF_FUNC_EN |
+ IGU_PF_CONF_INT_LINE_EN |
+ IGU_PF_CONF_ATTN_BIT_EN |
+ IGU_PF_CONF_SINGLE_ISR_EN);
+ }
+
+ DP(NETIF_MSG_INTR, "write 0x%x to IGU mode %s\n",
+ val, (msix ? "MSI-X" : (msi ? "MSI" : "INTx")));
+
+ REG_WR(bp, IGU_REG_PF_CONFIGURATION, val);
+
+ barrier();
+
+ /* init leading/trailing edge */
+ if (IS_MF(bp)) {
+ val = (0xee0f | (1 << (BP_E1HVN(bp) + 4)));
+ if (bp->port.pmf)
+ /* enable nig and gpio3 attention */
+ val |= 0x1100;
+ } else
+ val = 0xffff;
+
+ REG_WR(bp, IGU_REG_TRAILING_EDGE_LATCH, val);
+ REG_WR(bp, IGU_REG_LEADING_EDGE_LATCH, val);
+
+ /* Make sure that interrupts are indeed enabled from here on */
+ mmiowb();
+}
+
+void bnx2x_int_enable(struct bnx2x *bp)
+{
+ if (bp->common.int_block == INT_BLOCK_HC)
+ bnx2x_hc_int_enable(bp);
+ else
+ bnx2x_igu_int_enable(bp);
+}
+
+static void bnx2x_hc_int_disable(struct bnx2x *bp)
+{
+ int port = BP_PORT(bp);
+ u32 addr = port ? HC_REG_CONFIG_1 : HC_REG_CONFIG_0;
+ u32 val = REG_RD(bp, addr);
+
+ /*
+ * in E1 we must use only PCI configuration space to disable
+ * MSI/MSIX capablility
+ * It's forbitten to disable IGU_PF_CONF_MSI_MSIX_EN in HC block
+ */
+ if (CHIP_IS_E1(bp)) {
+ /* Since IGU_PF_CONF_MSI_MSIX_EN still always on
+ * Use mask register to prevent from HC sending interrupts
+ * after we exit the function
+ */
+ REG_WR(bp, HC_REG_INT_MASK + port*4, 0);
+
+ val &= ~(HC_CONFIG_0_REG_SINGLE_ISR_EN_0 |
+ HC_CONFIG_0_REG_INT_LINE_EN_0 |
+ HC_CONFIG_0_REG_ATTN_BIT_EN_0);
+ } else
+ val &= ~(HC_CONFIG_0_REG_SINGLE_ISR_EN_0 |
+ HC_CONFIG_0_REG_MSI_MSIX_INT_EN_0 |
+ HC_CONFIG_0_REG_INT_LINE_EN_0 |
+ HC_CONFIG_0_REG_ATTN_BIT_EN_0);
+
+ DP(NETIF_MSG_INTR, "write %x to HC %d (addr 0x%x)\n",
+ val, port, addr);
+
+ /* flush all outstanding writes */
+ mmiowb();
+
+ REG_WR(bp, addr, val);
+ if (REG_RD(bp, addr) != val)
+ BNX2X_ERR("BUG! proper val not read from IGU!\n");
+}
+
+static void bnx2x_igu_int_disable(struct bnx2x *bp)
+{
+ u32 val = REG_RD(bp, IGU_REG_PF_CONFIGURATION);
+
+ val &= ~(IGU_PF_CONF_MSI_MSIX_EN |
+ IGU_PF_CONF_INT_LINE_EN |
+ IGU_PF_CONF_ATTN_BIT_EN);
+
+ DP(NETIF_MSG_INTR, "write %x to IGU\n", val);
+
+ /* flush all outstanding writes */
+ mmiowb();
+
+ REG_WR(bp, IGU_REG_PF_CONFIGURATION, val);
+ if (REG_RD(bp, IGU_REG_PF_CONFIGURATION) != val)
+ BNX2X_ERR("BUG! proper val not read from IGU!\n");
+}
+
+void bnx2x_int_disable(struct bnx2x *bp)
+{
+ if (bp->common.int_block == INT_BLOCK_HC)
+ bnx2x_hc_int_disable(bp);
+ else
+ bnx2x_igu_int_disable(bp);
+}
+
+void bnx2x_int_disable_sync(struct bnx2x *bp, int disable_hw)
+{
+ int msix = (bp->flags & USING_MSIX_FLAG) ? 1 : 0;
+ int i, offset;
+
+ if (disable_hw)
+ /* prevent the HW from sending interrupts */
+ bnx2x_int_disable(bp);
+
+ /* make sure all ISRs are done */
+ if (msix) {
+ synchronize_irq(bp->msix_table[0].vector);
+ offset = 1;
+#ifdef BCM_CNIC
+ offset++;
+#endif
+ for_each_eth_queue(bp, i)
+ synchronize_irq(bp->msix_table[offset++].vector);
+ } else
+ synchronize_irq(bp->pdev->irq);
+
+ /* make sure sp_task is not running */
+ cancel_delayed_work(&bp->sp_task);
+ cancel_delayed_work(&bp->period_task);
+ flush_workqueue(bnx2x_wq);
+}
+
+/* fast path */
+
+/*
+ * General service functions
+ */
+
+/* Return true if succeeded to acquire the lock */
+static bool bnx2x_trylock_hw_lock(struct bnx2x *bp, u32 resource)
+{
+ u32 lock_status;
+ u32 resource_bit = (1 << resource);
+ int func = BP_FUNC(bp);
+ u32 hw_lock_control_reg;
+
+ DP(NETIF_MSG_HW, "Trying to take a lock on resource %d\n", resource);
+
+ /* Validating that the resource is within range */
+ if (resource > HW_LOCK_MAX_RESOURCE_VALUE) {
+ DP(NETIF_MSG_HW,
+ "resource(0x%x) > HW_LOCK_MAX_RESOURCE_VALUE(0x%x)\n",
+ resource, HW_LOCK_MAX_RESOURCE_VALUE);
+ return false;
+ }
+
+ if (func <= 5)
+ hw_lock_control_reg = (MISC_REG_DRIVER_CONTROL_1 + func*8);
+ else
+ hw_lock_control_reg =
+ (MISC_REG_DRIVER_CONTROL_7 + (func - 6)*8);
+
+ /* Try to acquire the lock */
+ REG_WR(bp, hw_lock_control_reg + 4, resource_bit);
+ lock_status = REG_RD(bp, hw_lock_control_reg);
+ if (lock_status & resource_bit)
+ return true;
+
+ DP(NETIF_MSG_HW, "Failed to get a lock on resource %d\n", resource);
+ return false;
+}
+
+/**
+ * bnx2x_get_leader_lock_resource - get the recovery leader resource id
+ *
+ * @bp: driver handle
+ *
+ * Returns the recovery leader resource id according to the engine this function
+ * belongs to. Currently only only 2 engines is supported.
+ */
+static inline int bnx2x_get_leader_lock_resource(struct bnx2x *bp)
+{
+ if (BP_PATH(bp))
+ return HW_LOCK_RESOURCE_RECOVERY_LEADER_1;
+ else
+ return HW_LOCK_RESOURCE_RECOVERY_LEADER_0;
+}
+
+/**
+ * bnx2x_trylock_leader_lock- try to aquire a leader lock.
+ *
+ * @bp: driver handle
+ *
+ * Tries to aquire a leader lock for cuurent engine.
+ */
+static inline bool bnx2x_trylock_leader_lock(struct bnx2x *bp)
+{
+ return bnx2x_trylock_hw_lock(bp, bnx2x_get_leader_lock_resource(bp));
+}
+
+#ifdef BCM_CNIC
+static void bnx2x_cnic_cfc_comp(struct bnx2x *bp, int cid, u8 err);
+#endif
+
+void bnx2x_sp_event(struct bnx2x_fastpath *fp, union eth_rx_cqe *rr_cqe)
+{
+ struct bnx2x *bp = fp->bp;
+ int cid = SW_CID(rr_cqe->ramrod_cqe.conn_and_cmd_data);
+ int command = CQE_CMD(rr_cqe->ramrod_cqe.conn_and_cmd_data);
+ enum bnx2x_queue_cmd drv_cmd = BNX2X_Q_CMD_MAX;
+ struct bnx2x_queue_sp_obj *q_obj = &fp->q_obj;
+
+ DP(BNX2X_MSG_SP,
+ "fp %d cid %d got ramrod #%d state is %x type is %d\n",
+ fp->index, cid, command, bp->state,
+ rr_cqe->ramrod_cqe.ramrod_type);
+
+ switch (command) {
+ case (RAMROD_CMD_ID_ETH_CLIENT_UPDATE):
+ DP(BNX2X_MSG_SP, "got UPDATE ramrod. CID %d\n", cid);
+ drv_cmd = BNX2X_Q_CMD_UPDATE;
+ break;
+
+ case (RAMROD_CMD_ID_ETH_CLIENT_SETUP):
+ DP(BNX2X_MSG_SP, "got MULTI[%d] setup ramrod\n", cid);
+ drv_cmd = BNX2X_Q_CMD_SETUP;
+ break;
+
+ case (RAMROD_CMD_ID_ETH_TX_QUEUE_SETUP):
+ DP(NETIF_MSG_IFUP, "got MULTI[%d] tx-only setup ramrod\n", cid);
+ drv_cmd = BNX2X_Q_CMD_SETUP_TX_ONLY;
+ break;
+
+ case (RAMROD_CMD_ID_ETH_HALT):
+ DP(BNX2X_MSG_SP, "got MULTI[%d] halt ramrod\n", cid);
+ drv_cmd = BNX2X_Q_CMD_HALT;
+ break;
+
+ case (RAMROD_CMD_ID_ETH_TERMINATE):
+ DP(BNX2X_MSG_SP, "got MULTI[%d] teminate ramrod\n", cid);
+ drv_cmd = BNX2X_Q_CMD_TERMINATE;
+ break;
+
+ case (RAMROD_CMD_ID_ETH_EMPTY):
+ DP(BNX2X_MSG_SP, "got MULTI[%d] empty ramrod\n", cid);
+ drv_cmd = BNX2X_Q_CMD_EMPTY;
+ break;
+
+ default:
+ BNX2X_ERR("unexpected MC reply (%d) on fp[%d]\n",
+ command, fp->index);
+ return;
+ }
+
+ if ((drv_cmd != BNX2X_Q_CMD_MAX) &&
+ q_obj->complete_cmd(bp, q_obj, drv_cmd))
+ /* q_obj->complete_cmd() failure means that this was
+ * an unexpected completion.
+ *
+ * In this case we don't want to increase the bp->spq_left
+ * because apparently we haven't sent this command the first
+ * place.
+ */
+#ifdef BNX2X_STOP_ON_ERROR
+ bnx2x_panic();
+#else
+ return;
+#endif
+
+ smp_mb__before_atomic_inc();
+ atomic_inc(&bp->cq_spq_left);
+ /* push the change in bp->spq_left and towards the memory */
+ smp_mb__after_atomic_inc();
+
+ DP(BNX2X_MSG_SP, "bp->cq_spq_left %x\n", atomic_read(&bp->cq_spq_left));
+
+ return;
+}
+
+void bnx2x_update_rx_prod(struct bnx2x *bp, struct bnx2x_fastpath *fp,
+ u16 bd_prod, u16 rx_comp_prod, u16 rx_sge_prod)
+{
+ u32 start = BAR_USTRORM_INTMEM + fp->ustorm_rx_prods_offset;
+
+ bnx2x_update_rx_prod_gen(bp, fp, bd_prod, rx_comp_prod, rx_sge_prod,
+ start);
+}
+
+irqreturn_t bnx2x_interrupt(int irq, void *dev_instance)
+{
+ struct bnx2x *bp = netdev_priv(dev_instance);
+ u16 status = bnx2x_ack_int(bp);
+ u16 mask;
+ int i;
+ u8 cos;
+
+ /* Return here if interrupt is shared and it's not for us */
+ if (unlikely(status == 0)) {
+ DP(NETIF_MSG_INTR, "not our interrupt!\n");
+ return IRQ_NONE;
+ }
+ DP(NETIF_MSG_INTR, "got an interrupt status 0x%x\n", status);
+
+#ifdef BNX2X_STOP_ON_ERROR
+ if (unlikely(bp->panic))
+ return IRQ_HANDLED;
+#endif
+
+ for_each_eth_queue(bp, i) {
+ struct bnx2x_fastpath *fp = &bp->fp[i];
+
+ mask = 0x2 << (fp->index + CNIC_PRESENT);
+ if (status & mask) {
+ /* Handle Rx or Tx according to SB id */
+ prefetch(fp->rx_cons_sb);
+ for_each_cos_in_tx_queue(fp, cos)
+ prefetch(fp->txdata[cos].tx_cons_sb);
+ prefetch(&fp->sb_running_index[SM_RX_ID]);
+ napi_schedule(&bnx2x_fp(bp, fp->index, napi));
+ status &= ~mask;
+ }
+ }
+
+#ifdef BCM_CNIC
+ mask = 0x2;
+ if (status & (mask | 0x1)) {
+ struct cnic_ops *c_ops = NULL;
+
+ if (likely(bp->state == BNX2X_STATE_OPEN)) {
+ rcu_read_lock();
+ c_ops = rcu_dereference(bp->cnic_ops);
+ if (c_ops)
+ c_ops->cnic_handler(bp->cnic_data, NULL);
+ rcu_read_unlock();
+ }
+
+ status &= ~mask;
+ }
+#endif
+
+ if (unlikely(status & 0x1)) {
+ queue_delayed_work(bnx2x_wq, &bp->sp_task, 0);
+
+ status &= ~0x1;
+ if (!status)
+ return IRQ_HANDLED;
+ }
+
+ if (unlikely(status))
+ DP(NETIF_MSG_INTR, "got an unknown interrupt! (status 0x%x)\n",
+ status);
+
+ return IRQ_HANDLED;
+}
+
+/* Link */
+
+/*
+ * General service functions
+ */
+
+int bnx2x_acquire_hw_lock(struct bnx2x *bp, u32 resource)
+{
+ u32 lock_status;
+ u32 resource_bit = (1 << resource);
+ int func = BP_FUNC(bp);
+ u32 hw_lock_control_reg;
+ int cnt;
+
+ /* Validating that the resource is within range */
+ if (resource > HW_LOCK_MAX_RESOURCE_VALUE) {
+ DP(NETIF_MSG_HW,
+ "resource(0x%x) > HW_LOCK_MAX_RESOURCE_VALUE(0x%x)\n",
+ resource, HW_LOCK_MAX_RESOURCE_VALUE);
+ return -EINVAL;
+ }
+
+ if (func <= 5) {
+ hw_lock_control_reg = (MISC_REG_DRIVER_CONTROL_1 + func*8);
+ } else {
+ hw_lock_control_reg =
+ (MISC_REG_DRIVER_CONTROL_7 + (func - 6)*8);
+ }
+
+ /* Validating that the resource is not already taken */
+ lock_status = REG_RD(bp, hw_lock_control_reg);
+ if (lock_status & resource_bit) {
+ DP(NETIF_MSG_HW, "lock_status 0x%x resource_bit 0x%x\n",
+ lock_status, resource_bit);
+ return -EEXIST;
+ }
+
+ /* Try for 5 second every 5ms */
+ for (cnt = 0; cnt < 1000; cnt++) {
+ /* Try to acquire the lock */
+ REG_WR(bp, hw_lock_control_reg + 4, resource_bit);
+ lock_status = REG_RD(bp, hw_lock_control_reg);
+ if (lock_status & resource_bit)
+ return 0;
+
+ msleep(5);
+ }
+ DP(NETIF_MSG_HW, "Timeout\n");
+ return -EAGAIN;
+}
+
+int bnx2x_release_leader_lock(struct bnx2x *bp)
+{
+ return bnx2x_release_hw_lock(bp, bnx2x_get_leader_lock_resource(bp));
+}
+
+int bnx2x_release_hw_lock(struct bnx2x *bp, u32 resource)
+{
+ u32 lock_status;
+ u32 resource_bit = (1 << resource);
+ int func = BP_FUNC(bp);
+ u32 hw_lock_control_reg;
+
+ DP(NETIF_MSG_HW, "Releasing a lock on resource %d\n", resource);
+
+ /* Validating that the resource is within range */
+ if (resource > HW_LOCK_MAX_RESOURCE_VALUE) {
+ DP(NETIF_MSG_HW,
+ "resource(0x%x) > HW_LOCK_MAX_RESOURCE_VALUE(0x%x)\n",
+ resource, HW_LOCK_MAX_RESOURCE_VALUE);
+ return -EINVAL;
+ }
+
+ if (func <= 5) {
+ hw_lock_control_reg = (MISC_REG_DRIVER_CONTROL_1 + func*8);
+ } else {
+ hw_lock_control_reg =
+ (MISC_REG_DRIVER_CONTROL_7 + (func - 6)*8);
+ }
+
+ /* Validating that the resource is currently taken */
+ lock_status = REG_RD(bp, hw_lock_control_reg);
+ if (!(lock_status & resource_bit)) {
+ DP(NETIF_MSG_HW, "lock_status 0x%x resource_bit 0x%x\n",
+ lock_status, resource_bit);
+ return -EFAULT;
+ }
+
+ REG_WR(bp, hw_lock_control_reg, resource_bit);
+ return 0;
+}
+
+
+int bnx2x_get_gpio(struct bnx2x *bp, int gpio_num, u8 port)
+{
+ /* The GPIO should be swapped if swap register is set and active */
+ int gpio_port = (REG_RD(bp, NIG_REG_PORT_SWAP) &&
+ REG_RD(bp, NIG_REG_STRAP_OVERRIDE)) ^ port;
+ int gpio_shift = gpio_num +
+ (gpio_port ? MISC_REGISTERS_GPIO_PORT_SHIFT : 0);
+ u32 gpio_mask = (1 << gpio_shift);
+ u32 gpio_reg;
+ int value;
+
+ if (gpio_num > MISC_REGISTERS_GPIO_3) {
+ BNX2X_ERR("Invalid GPIO %d\n", gpio_num);
+ return -EINVAL;
+ }
+
+ /* read GPIO value */
+ gpio_reg = REG_RD(bp, MISC_REG_GPIO);
+
+ /* get the requested pin value */
+ if ((gpio_reg & gpio_mask) == gpio_mask)
+ value = 1;
+ else
+ value = 0;
+
+ DP(NETIF_MSG_LINK, "pin %d value 0x%x\n", gpio_num, value);
+
+ return value;
+}
+
+int bnx2x_set_gpio(struct bnx2x *bp, int gpio_num, u32 mode, u8 port)
+{
+ /* The GPIO should be swapped if swap register is set and active */
+ int gpio_port = (REG_RD(bp, NIG_REG_PORT_SWAP) &&
+ REG_RD(bp, NIG_REG_STRAP_OVERRIDE)) ^ port;
+ int gpio_shift = gpio_num +
+ (gpio_port ? MISC_REGISTERS_GPIO_PORT_SHIFT : 0);
+ u32 gpio_mask = (1 << gpio_shift);
+ u32 gpio_reg;
+
+ if (gpio_num > MISC_REGISTERS_GPIO_3) {
+ BNX2X_ERR("Invalid GPIO %d\n", gpio_num);
+ return -EINVAL;
+ }
+
+ bnx2x_acquire_hw_lock(bp, HW_LOCK_RESOURCE_GPIO);
+ /* read GPIO and mask except the float bits */
+ gpio_reg = (REG_RD(bp, MISC_REG_GPIO) & MISC_REGISTERS_GPIO_FLOAT);
+
+ switch (mode) {
+ case MISC_REGISTERS_GPIO_OUTPUT_LOW:
+ DP(NETIF_MSG_LINK, "Set GPIO %d (shift %d) -> output low\n",
+ gpio_num, gpio_shift);
+ /* clear FLOAT and set CLR */
+ gpio_reg &= ~(gpio_mask << MISC_REGISTERS_GPIO_FLOAT_POS);
+ gpio_reg |= (gpio_mask << MISC_REGISTERS_GPIO_CLR_POS);
+ break;
+
+ case MISC_REGISTERS_GPIO_OUTPUT_HIGH:
+ DP(NETIF_MSG_LINK, "Set GPIO %d (shift %d) -> output high\n",
+ gpio_num, gpio_shift);
+ /* clear FLOAT and set SET */
+ gpio_reg &= ~(gpio_mask << MISC_REGISTERS_GPIO_FLOAT_POS);
+ gpio_reg |= (gpio_mask << MISC_REGISTERS_GPIO_SET_POS);
+ break;
+
+ case MISC_REGISTERS_GPIO_INPUT_HI_Z:
+ DP(NETIF_MSG_LINK, "Set GPIO %d (shift %d) -> input\n",
+ gpio_num, gpio_shift);
+ /* set FLOAT */
+ gpio_reg |= (gpio_mask << MISC_REGISTERS_GPIO_FLOAT_POS);
+ break;
+
+ default:
+ break;
+ }
+
+ REG_WR(bp, MISC_REG_GPIO, gpio_reg);
+ bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_GPIO);
+
+ return 0;
+}
+
+int bnx2x_set_mult_gpio(struct bnx2x *bp, u8 pins, u32 mode)
+{
+ u32 gpio_reg = 0;
+ int rc = 0;
+
+ /* Any port swapping should be handled by caller. */
+
+ bnx2x_acquire_hw_lock(bp, HW_LOCK_RESOURCE_GPIO);
+ /* read GPIO and mask except the float bits */
+ gpio_reg = REG_RD(bp, MISC_REG_GPIO);
+ gpio_reg &= ~(pins << MISC_REGISTERS_GPIO_FLOAT_POS);
+ gpio_reg &= ~(pins << MISC_REGISTERS_GPIO_CLR_POS);
+ gpio_reg &= ~(pins << MISC_REGISTERS_GPIO_SET_POS);
+
+ switch (mode) {
+ case MISC_REGISTERS_GPIO_OUTPUT_LOW:
+ DP(NETIF_MSG_LINK, "Set GPIO 0x%x -> output low\n", pins);
+ /* set CLR */
+ gpio_reg |= (pins << MISC_REGISTERS_GPIO_CLR_POS);
+ break;
+
+ case MISC_REGISTERS_GPIO_OUTPUT_HIGH:
+ DP(NETIF_MSG_LINK, "Set GPIO 0x%x -> output high\n", pins);
+ /* set SET */
+ gpio_reg |= (pins << MISC_REGISTERS_GPIO_SET_POS);
+ break;
+
+ case MISC_REGISTERS_GPIO_INPUT_HI_Z:
+ DP(NETIF_MSG_LINK, "Set GPIO 0x%x -> input\n", pins);
+ /* set FLOAT */
+ gpio_reg |= (pins << MISC_REGISTERS_GPIO_FLOAT_POS);
+ break;
+
+ default:
+ BNX2X_ERR("Invalid GPIO mode assignment %d\n", mode);
+ rc = -EINVAL;
+ break;
+ }
+
+ if (rc == 0)
+ REG_WR(bp, MISC_REG_GPIO, gpio_reg);
+
+ bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_GPIO);
+
+ return rc;
+}
+
+int bnx2x_set_gpio_int(struct bnx2x *bp, int gpio_num, u32 mode, u8 port)
+{
+ /* The GPIO should be swapped if swap register is set and active */
+ int gpio_port = (REG_RD(bp, NIG_REG_PORT_SWAP) &&
+ REG_RD(bp, NIG_REG_STRAP_OVERRIDE)) ^ port;
+ int gpio_shift = gpio_num +
+ (gpio_port ? MISC_REGISTERS_GPIO_PORT_SHIFT : 0);
+ u32 gpio_mask = (1 << gpio_shift);
+ u32 gpio_reg;
+
+ if (gpio_num > MISC_REGISTERS_GPIO_3) {
+ BNX2X_ERR("Invalid GPIO %d\n", gpio_num);
+ return -EINVAL;
+ }
+
+ bnx2x_acquire_hw_lock(bp, HW_LOCK_RESOURCE_GPIO);
+ /* read GPIO int */
+ gpio_reg = REG_RD(bp, MISC_REG_GPIO_INT);
+
+ switch (mode) {
+ case MISC_REGISTERS_GPIO_INT_OUTPUT_CLR:
+ DP(NETIF_MSG_LINK, "Clear GPIO INT %d (shift %d) -> "
+ "output low\n", gpio_num, gpio_shift);
+ /* clear SET and set CLR */
+ gpio_reg &= ~(gpio_mask << MISC_REGISTERS_GPIO_INT_SET_POS);
+ gpio_reg |= (gpio_mask << MISC_REGISTERS_GPIO_INT_CLR_POS);
+ break;
+
+ case MISC_REGISTERS_GPIO_INT_OUTPUT_SET:
+ DP(NETIF_MSG_LINK, "Set GPIO INT %d (shift %d) -> "
+ "output high\n", gpio_num, gpio_shift);
+ /* clear CLR and set SET */
+ gpio_reg &= ~(gpio_mask << MISC_REGISTERS_GPIO_INT_CLR_POS);
+ gpio_reg |= (gpio_mask << MISC_REGISTERS_GPIO_INT_SET_POS);
+ break;
+
+ default:
+ break;
+ }
+
+ REG_WR(bp, MISC_REG_GPIO_INT, gpio_reg);
+ bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_GPIO);
+
+ return 0;
+}
+
+static int bnx2x_set_spio(struct bnx2x *bp, int spio_num, u32 mode)
+{
+ u32 spio_mask = (1 << spio_num);
+ u32 spio_reg;
+
+ if ((spio_num < MISC_REGISTERS_SPIO_4) ||
+ (spio_num > MISC_REGISTERS_SPIO_7)) {
+ BNX2X_ERR("Invalid SPIO %d\n", spio_num);
+ return -EINVAL;
+ }
+
+ bnx2x_acquire_hw_lock(bp, HW_LOCK_RESOURCE_SPIO);
+ /* read SPIO and mask except the float bits */
+ spio_reg = (REG_RD(bp, MISC_REG_SPIO) & MISC_REGISTERS_SPIO_FLOAT);
+
+ switch (mode) {
+ case MISC_REGISTERS_SPIO_OUTPUT_LOW:
+ DP(NETIF_MSG_LINK, "Set SPIO %d -> output low\n", spio_num);
+ /* clear FLOAT and set CLR */
+ spio_reg &= ~(spio_mask << MISC_REGISTERS_SPIO_FLOAT_POS);
+ spio_reg |= (spio_mask << MISC_REGISTERS_SPIO_CLR_POS);
+ break;
+
+ case MISC_REGISTERS_SPIO_OUTPUT_HIGH:
+ DP(NETIF_MSG_LINK, "Set SPIO %d -> output high\n", spio_num);
+ /* clear FLOAT and set SET */
+ spio_reg &= ~(spio_mask << MISC_REGISTERS_SPIO_FLOAT_POS);
+ spio_reg |= (spio_mask << MISC_REGISTERS_SPIO_SET_POS);
+ break;
+
+ case MISC_REGISTERS_SPIO_INPUT_HI_Z:
+ DP(NETIF_MSG_LINK, "Set SPIO %d -> input\n", spio_num);
+ /* set FLOAT */
+ spio_reg |= (spio_mask << MISC_REGISTERS_SPIO_FLOAT_POS);
+ break;
+
+ default:
+ break;
+ }
+
+ REG_WR(bp, MISC_REG_SPIO, spio_reg);
+ bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_SPIO);
+
+ return 0;
+}
+
+void bnx2x_calc_fc_adv(struct bnx2x *bp)
+{
+ u8 cfg_idx = bnx2x_get_link_cfg_idx(bp);
+ switch (bp->link_vars.ieee_fc &
+ MDIO_COMBO_IEEE0_AUTO_NEG_ADV_PAUSE_MASK) {
+ case MDIO_COMBO_IEEE0_AUTO_NEG_ADV_PAUSE_NONE:
+ bp->port.advertising[cfg_idx] &= ~(ADVERTISED_Asym_Pause |
+ ADVERTISED_Pause);
+ break;
+
+ case MDIO_COMBO_IEEE0_AUTO_NEG_ADV_PAUSE_BOTH:
+ bp->port.advertising[cfg_idx] |= (ADVERTISED_Asym_Pause |
+ ADVERTISED_Pause);
+ break;
+
+ case MDIO_COMBO_IEEE0_AUTO_NEG_ADV_PAUSE_ASYMMETRIC:
+ bp->port.advertising[cfg_idx] |= ADVERTISED_Asym_Pause;
+ break;
+
+ default:
+ bp->port.advertising[cfg_idx] &= ~(ADVERTISED_Asym_Pause |
+ ADVERTISED_Pause);
+ break;
+ }
+}
+
+u8 bnx2x_initial_phy_init(struct bnx2x *bp, int load_mode)
+{
+ if (!BP_NOMCP(bp)) {
+ u8 rc;
+ int cfx_idx = bnx2x_get_link_cfg_idx(bp);
+ u16 req_line_speed = bp->link_params.req_line_speed[cfx_idx];
+ /*
+ * Initialize link parameters structure variables
+ * It is recommended to turn off RX FC for jumbo frames
+ * for better performance
+ */
+ if (CHIP_IS_E1x(bp) && (bp->dev->mtu > 5000))
+ bp->link_params.req_fc_auto_adv = BNX2X_FLOW_CTRL_TX;
+ else
+ bp->link_params.req_fc_auto_adv = BNX2X_FLOW_CTRL_BOTH;
+
+ bnx2x_acquire_phy_lock(bp);
+
+ if (load_mode == LOAD_DIAG) {
+ struct link_params *lp = &bp->link_params;
+ lp->loopback_mode = LOOPBACK_XGXS;
+ /* do PHY loopback at 10G speed, if possible */
+ if (lp->req_line_speed[cfx_idx] < SPEED_10000) {
+ if (lp->speed_cap_mask[cfx_idx] &
+ PORT_HW_CFG_SPEED_CAPABILITY_D0_10G)
+ lp->req_line_speed[cfx_idx] =
+ SPEED_10000;
+ else
+ lp->req_line_speed[cfx_idx] =
+ SPEED_1000;
+ }
+ }
+
+ rc = bnx2x_phy_init(&bp->link_params, &bp->link_vars);
+
+ bnx2x_release_phy_lock(bp);
+
+ bnx2x_calc_fc_adv(bp);
+
+ if (CHIP_REV_IS_SLOW(bp) && bp->link_vars.link_up) {
+ bnx2x_stats_handle(bp, STATS_EVENT_LINK_UP);
+ bnx2x_link_report(bp);
+ } else
+ queue_delayed_work(bnx2x_wq, &bp->period_task, 0);
+ bp->link_params.req_line_speed[cfx_idx] = req_line_speed;
+ return rc;
+ }
+ BNX2X_ERR("Bootcode is missing - can not initialize link\n");
+ return -EINVAL;
+}
+
+void bnx2x_link_set(struct bnx2x *bp)
+{
+ if (!BP_NOMCP(bp)) {
+ bnx2x_acquire_phy_lock(bp);
+ bnx2x_link_reset(&bp->link_params, &bp->link_vars, 1);
+ bnx2x_phy_init(&bp->link_params, &bp->link_vars);
+ bnx2x_release_phy_lock(bp);
+
+ bnx2x_calc_fc_adv(bp);
+ } else
+ BNX2X_ERR("Bootcode is missing - can not set link\n");
+}
+
+static void bnx2x__link_reset(struct bnx2x *bp)
+{
+ if (!BP_NOMCP(bp)) {
+ bnx2x_acquire_phy_lock(bp);
+ bnx2x_link_reset(&bp->link_params, &bp->link_vars, 1);
+ bnx2x_release_phy_lock(bp);
+ } else
+ BNX2X_ERR("Bootcode is missing - can not reset link\n");
+}
+
+u8 bnx2x_link_test(struct bnx2x *bp, u8 is_serdes)
+{
+ u8 rc = 0;
+
+ if (!BP_NOMCP(bp)) {
+ bnx2x_acquire_phy_lock(bp);
+ rc = bnx2x_test_link(&bp->link_params, &bp->link_vars,
+ is_serdes);
+ bnx2x_release_phy_lock(bp);
+ } else
+ BNX2X_ERR("Bootcode is missing - can not test link\n");
+
+ return rc;
+}
+
+static void bnx2x_init_port_minmax(struct bnx2x *bp)
+{
+ u32 r_param = bp->link_vars.line_speed / 8;
+ u32 fair_periodic_timeout_usec;
+ u32 t_fair;
+
+ memset(&(bp->cmng.rs_vars), 0,
+ sizeof(struct rate_shaping_vars_per_port));
+ memset(&(bp->cmng.fair_vars), 0, sizeof(struct fairness_vars_per_port));
+
+ /* 100 usec in SDM ticks = 25 since each tick is 4 usec */
+ bp->cmng.rs_vars.rs_periodic_timeout = RS_PERIODIC_TIMEOUT_USEC / 4;
+
+ /* this is the threshold below which no timer arming will occur
+ 1.25 coefficient is for the threshold to be a little bigger
+ than the real time, to compensate for timer in-accuracy */
+ bp->cmng.rs_vars.rs_threshold =
+ (RS_PERIODIC_TIMEOUT_USEC * r_param * 5) / 4;
+
+ /* resolution of fairness timer */
+ fair_periodic_timeout_usec = QM_ARB_BYTES / r_param;
+ /* for 10G it is 1000usec. for 1G it is 10000usec. */
+ t_fair = T_FAIR_COEF / bp->link_vars.line_speed;
+
+ /* this is the threshold below which we won't arm the timer anymore */
+ bp->cmng.fair_vars.fair_threshold = QM_ARB_BYTES;
+
+ /* we multiply by 1e3/8 to get bytes/msec.
+ We don't want the credits to pass a credit
+ of the t_fair*FAIR_MEM (algorithm resolution) */
+ bp->cmng.fair_vars.upper_bound = r_param * t_fair * FAIR_MEM;
+ /* since each tick is 4 usec */
+ bp->cmng.fair_vars.fairness_timeout = fair_periodic_timeout_usec / 4;
+}
+
+/* Calculates the sum of vn_min_rates.
+ It's needed for further normalizing of the min_rates.
+ Returns:
+ sum of vn_min_rates.
+ or
+ 0 - if all the min_rates are 0.
+ In the later case fainess algorithm should be deactivated.
+ If not all min_rates are zero then those that are zeroes will be set to 1.
+ */
+static void bnx2x_calc_vn_weight_sum(struct bnx2x *bp)
+{
+ int all_zero = 1;
+ int vn;
+
+ bp->vn_weight_sum = 0;
+ for (vn = VN_0; vn < E1HVN_MAX; vn++) {
+ u32 vn_cfg = bp->mf_config[vn];
+ u32 vn_min_rate = ((vn_cfg & FUNC_MF_CFG_MIN_BW_MASK) >>
+ FUNC_MF_CFG_MIN_BW_SHIFT) * 100;
+
+ /* Skip hidden vns */
+ if (vn_cfg & FUNC_MF_CFG_FUNC_HIDE)
+ continue;
+
+ /* If min rate is zero - set it to 1 */
+ if (!vn_min_rate)
+ vn_min_rate = DEF_MIN_RATE;
+ else
+ all_zero = 0;
+
+ bp->vn_weight_sum += vn_min_rate;
+ }
+
+ /* if ETS or all min rates are zeros - disable fairness */
+ if (BNX2X_IS_ETS_ENABLED(bp)) {
+ bp->cmng.flags.cmng_enables &=
+ ~CMNG_FLAGS_PER_PORT_FAIRNESS_VN;
+ DP(NETIF_MSG_IFUP, "Fairness will be disabled due to ETS\n");
+ } else if (all_zero) {
+ bp->cmng.flags.cmng_enables &=
+ ~CMNG_FLAGS_PER_PORT_FAIRNESS_VN;
+ DP(NETIF_MSG_IFUP, "All MIN values are zeroes"
+ " fairness will be disabled\n");
+ } else
+ bp->cmng.flags.cmng_enables |=
+ CMNG_FLAGS_PER_PORT_FAIRNESS_VN;
+}
+
+static void bnx2x_init_vn_minmax(struct bnx2x *bp, int vn)
+{
+ struct rate_shaping_vars_per_vn m_rs_vn;
+ struct fairness_vars_per_vn m_fair_vn;
+ u32 vn_cfg = bp->mf_config[vn];
+ int func = 2*vn + BP_PORT(bp);
+ u16 vn_min_rate, vn_max_rate;
+ int i;
+
+ /* If function is hidden - set min and max to zeroes */
+ if (vn_cfg & FUNC_MF_CFG_FUNC_HIDE) {
+ vn_min_rate = 0;
+ vn_max_rate = 0;
+
+ } else {
+ u32 maxCfg = bnx2x_extract_max_cfg(bp, vn_cfg);
+
+ vn_min_rate = ((vn_cfg & FUNC_MF_CFG_MIN_BW_MASK) >>
+ FUNC_MF_CFG_MIN_BW_SHIFT) * 100;
+ /* If fairness is enabled (not all min rates are zeroes) and
+ if current min rate is zero - set it to 1.
+ This is a requirement of the algorithm. */
+ if (bp->vn_weight_sum && (vn_min_rate == 0))
+ vn_min_rate = DEF_MIN_RATE;
+
+ if (IS_MF_SI(bp))
+ /* maxCfg in percents of linkspeed */
+ vn_max_rate = (bp->link_vars.line_speed * maxCfg) / 100;
+ else
+ /* maxCfg is absolute in 100Mb units */
+ vn_max_rate = maxCfg * 100;
+ }
+
+ DP(NETIF_MSG_IFUP,
+ "func %d: vn_min_rate %d vn_max_rate %d vn_weight_sum %d\n",
+ func, vn_min_rate, vn_max_rate, bp->vn_weight_sum);
+
+ memset(&m_rs_vn, 0, sizeof(struct rate_shaping_vars_per_vn));
+ memset(&m_fair_vn, 0, sizeof(struct fairness_vars_per_vn));
+
+ /* global vn counter - maximal Mbps for this vn */
+ m_rs_vn.vn_counter.rate = vn_max_rate;
+
+ /* quota - number of bytes transmitted in this period */
+ m_rs_vn.vn_counter.quota =
+ (vn_max_rate * RS_PERIODIC_TIMEOUT_USEC) / 8;
+
+ if (bp->vn_weight_sum) {
+ /* credit for each period of the fairness algorithm:
+ number of bytes in T_FAIR (the vn share the port rate).
+ vn_weight_sum should not be larger than 10000, thus
+ T_FAIR_COEF / (8 * vn_weight_sum) will always be greater
+ than zero */
+ m_fair_vn.vn_credit_delta =
+ max_t(u32, (vn_min_rate * (T_FAIR_COEF /
+ (8 * bp->vn_weight_sum))),
+ (bp->cmng.fair_vars.fair_threshold +
+ MIN_ABOVE_THRESH));
+ DP(NETIF_MSG_IFUP, "m_fair_vn.vn_credit_delta %d\n",
+ m_fair_vn.vn_credit_delta);
+ }
+
+ /* Store it to internal memory */
+ for (i = 0; i < sizeof(struct rate_shaping_vars_per_vn)/4; i++)
+ REG_WR(bp, BAR_XSTRORM_INTMEM +
+ XSTORM_RATE_SHAPING_PER_VN_VARS_OFFSET(func) + i * 4,
+ ((u32 *)(&m_rs_vn))[i]);
+
+ for (i = 0; i < sizeof(struct fairness_vars_per_vn)/4; i++)
+ REG_WR(bp, BAR_XSTRORM_INTMEM +
+ XSTORM_FAIRNESS_PER_VN_VARS_OFFSET(func) + i * 4,
+ ((u32 *)(&m_fair_vn))[i]);
+}
+
+static int bnx2x_get_cmng_fns_mode(struct bnx2x *bp)
+{
+ if (CHIP_REV_IS_SLOW(bp))
+ return CMNG_FNS_NONE;
+ if (IS_MF(bp))
+ return CMNG_FNS_MINMAX;
+
+ return CMNG_FNS_NONE;
+}
+
+void bnx2x_read_mf_cfg(struct bnx2x *bp)
+{
+ int vn, n = (CHIP_MODE_IS_4_PORT(bp) ? 2 : 1);
+
+ if (BP_NOMCP(bp))
+ return; /* what should be the default bvalue in this case */
+
+ /* For 2 port configuration the absolute function number formula
+ * is:
+ * abs_func = 2 * vn + BP_PORT + BP_PATH
+ *
+ * and there are 4 functions per port
+ *
+ * For 4 port configuration it is
+ * abs_func = 4 * vn + 2 * BP_PORT + BP_PATH
+ *
+ * and there are 2 functions per port
+ */
+ for (vn = VN_0; vn < E1HVN_MAX; vn++) {
+ int /*abs*/func = n * (2 * vn + BP_PORT(bp)) + BP_PATH(bp);
+
+ if (func >= E1H_FUNC_MAX)
+ break;
+
+ bp->mf_config[vn] =
+ MF_CFG_RD(bp, func_mf_config[func].config);
+ }
+}
+
+static void bnx2x_cmng_fns_init(struct bnx2x *bp, u8 read_cfg, u8 cmng_type)
+{
+
+ if (cmng_type == CMNG_FNS_MINMAX) {
+ int vn;
+
+ /* clear cmng_enables */
+ bp->cmng.flags.cmng_enables = 0;
+
+ /* read mf conf from shmem */
+ if (read_cfg)
+ bnx2x_read_mf_cfg(bp);
+
+ /* Init rate shaping and fairness contexts */
+ bnx2x_init_port_minmax(bp);
+
+ /* vn_weight_sum and enable fairness if not 0 */
+ bnx2x_calc_vn_weight_sum(bp);
+
+ /* calculate and set min-max rate for each vn */
+ if (bp->port.pmf)
+ for (vn = VN_0; vn < E1HVN_MAX; vn++)
+ bnx2x_init_vn_minmax(bp, vn);
+
+ /* always enable rate shaping and fairness */
+ bp->cmng.flags.cmng_enables |=
+ CMNG_FLAGS_PER_PORT_RATE_SHAPING_VN;
+ if (!bp->vn_weight_sum)
+ DP(NETIF_MSG_IFUP, "All MIN values are zeroes"
+ " fairness will be disabled\n");
+ return;
+ }
+
+ /* rate shaping and fairness are disabled */
+ DP(NETIF_MSG_IFUP,
+ "rate shaping and fairness are disabled\n");
+}
+
+static inline void bnx2x_link_sync_notify(struct bnx2x *bp)
+{
+ int port = BP_PORT(bp);
+ int func;
+ int vn;
+
+ /* Set the attention towards other drivers on the same port */
+ for (vn = VN_0; vn < E1HVN_MAX; vn++) {
+ if (vn == BP_E1HVN(bp))
+ continue;
+
+ func = ((vn << 1) | port);
+ REG_WR(bp, MISC_REG_AEU_GENERAL_ATTN_0 +
+ (LINK_SYNC_ATTENTION_BIT_FUNC_0 + func)*4, 1);
+ }
+}
+
+/* This function is called upon link interrupt */
+static void bnx2x_link_attn(struct bnx2x *bp)
+{
+ /* Make sure that we are synced with the current statistics */
+ bnx2x_stats_handle(bp, STATS_EVENT_STOP);
+
+ bnx2x_link_update(&bp->link_params, &bp->link_vars);
+
+ if (bp->link_vars.link_up) {
+
+ /* dropless flow control */
+ if (!CHIP_IS_E1(bp) && bp->dropless_fc) {
+ int port = BP_PORT(bp);
+ u32 pause_enabled = 0;
+
+ if (bp->link_vars.flow_ctrl & BNX2X_FLOW_CTRL_TX)
+ pause_enabled = 1;
+
+ REG_WR(bp, BAR_USTRORM_INTMEM +
+ USTORM_ETH_PAUSE_ENABLED_OFFSET(port),
+ pause_enabled);
+ }
+
+ if (bp->link_vars.mac_type != MAC_TYPE_EMAC) {
+ struct host_port_stats *pstats;
+
+ pstats = bnx2x_sp(bp, port_stats);
+ /* reset old mac stats */
+ memset(&(pstats->mac_stx[0]), 0,
+ sizeof(struct mac_stx));
+ }
+ if (bp->state == BNX2X_STATE_OPEN)
+ bnx2x_stats_handle(bp, STATS_EVENT_LINK_UP);
+ }
+
+ if (bp->link_vars.link_up && bp->link_vars.line_speed) {
+ int cmng_fns = bnx2x_get_cmng_fns_mode(bp);
+
+ if (cmng_fns != CMNG_FNS_NONE) {
+ bnx2x_cmng_fns_init(bp, false, cmng_fns);
+ storm_memset_cmng(bp, &bp->cmng, BP_PORT(bp));
+ } else
+ /* rate shaping and fairness are disabled */
+ DP(NETIF_MSG_IFUP,
+ "single function mode without fairness\n");
+ }
+
+ __bnx2x_link_report(bp);
+
+ if (IS_MF(bp))
+ bnx2x_link_sync_notify(bp);
+}
+
+void bnx2x__link_status_update(struct bnx2x *bp)
+{
+ if (bp->state != BNX2X_STATE_OPEN)
+ return;
+
+ bnx2x_link_status_update(&bp->link_params, &bp->link_vars);
+
+ if (bp->link_vars.link_up)
+ bnx2x_stats_handle(bp, STATS_EVENT_LINK_UP);
+ else
+ bnx2x_stats_handle(bp, STATS_EVENT_STOP);
+
+ /* indicate link status */
+ bnx2x_link_report(bp);
+}
+
+static void bnx2x_pmf_update(struct bnx2x *bp)
+{
+ int port = BP_PORT(bp);
+ u32 val;
+
+ bp->port.pmf = 1;
+ DP(NETIF_MSG_LINK, "pmf %d\n", bp->port.pmf);
+
+ /*
+ * We need the mb() to ensure the ordering between the writing to
+ * bp->port.pmf here and reading it from the bnx2x_periodic_task().
+ */
+ smp_mb();
+
+ /* queue a periodic task */
+ queue_delayed_work(bnx2x_wq, &bp->period_task, 0);
+
+ bnx2x_dcbx_pmf_update(bp);
+
+ /* enable nig attention */
+ val = (0xff0f | (1 << (BP_E1HVN(bp) + 4)));
+ if (bp->common.int_block == INT_BLOCK_HC) {
+ REG_WR(bp, HC_REG_TRAILING_EDGE_0 + port*8, val);
+ REG_WR(bp, HC_REG_LEADING_EDGE_0 + port*8, val);
+ } else if (!CHIP_IS_E1x(bp)) {
+ REG_WR(bp, IGU_REG_TRAILING_EDGE_LATCH, val);
+ REG_WR(bp, IGU_REG_LEADING_EDGE_LATCH, val);
+ }
+
+ bnx2x_stats_handle(bp, STATS_EVENT_PMF);
+}
+
+/* end of Link */
+
+/* slow path */
+
+/*
+ * General service functions
+ */
+
+/* send the MCP a request, block until there is a reply */
+u32 bnx2x_fw_command(struct bnx2x *bp, u32 command, u32 param)
+{
+ int mb_idx = BP_FW_MB_IDX(bp);
+ u32 seq;
+ u32 rc = 0;
+ u32 cnt = 1;
+ u8 delay = CHIP_REV_IS_SLOW(bp) ? 100 : 10;
+
+ mutex_lock(&bp->fw_mb_mutex);
+ seq = ++bp->fw_seq;
+ SHMEM_WR(bp, func_mb[mb_idx].drv_mb_param, param);
+ SHMEM_WR(bp, func_mb[mb_idx].drv_mb_header, (command | seq));
+
+ DP(BNX2X_MSG_MCP, "wrote command (%x) to FW MB param 0x%08x\n",
+ (command | seq), param);
+
+ do {
+ /* let the FW do it's magic ... */
+ msleep(delay);
+
+ rc = SHMEM_RD(bp, func_mb[mb_idx].fw_mb_header);
+
+ /* Give the FW up to 5 second (500*10ms) */
+ } while ((seq != (rc & FW_MSG_SEQ_NUMBER_MASK)) && (cnt++ < 500));
+
+ DP(BNX2X_MSG_MCP, "[after %d ms] read (%x) seq is (%x) from FW MB\n",
+ cnt*delay, rc, seq);
+
+ /* is this a reply to our command? */
+ if (seq == (rc & FW_MSG_SEQ_NUMBER_MASK))
+ rc &= FW_MSG_CODE_MASK;
+ else {
+ /* FW BUG! */
+ BNX2X_ERR("FW failed to respond!\n");
+ bnx2x_fw_dump(bp);
+ rc = 0;
+ }
+ mutex_unlock(&bp->fw_mb_mutex);
+
+ return rc;
+}
+
+static u8 stat_counter_valid(struct bnx2x *bp, struct bnx2x_fastpath *fp)
+{
+#ifdef BCM_CNIC
+ /* Statistics are not supported for CNIC Clients at the moment */
+ if (IS_FCOE_FP(fp))
+ return false;
+#endif
+ return true;
+}
+
+void bnx2x_func_init(struct bnx2x *bp, struct bnx2x_func_init_params *p)
+{
+ if (CHIP_IS_E1x(bp)) {
+ struct tstorm_eth_function_common_config tcfg = {0};
+
+ storm_memset_func_cfg(bp, &tcfg, p->func_id);
+ }
+
+ /* Enable the function in the FW */
+ storm_memset_vf_to_pf(bp, p->func_id, p->pf_id);
+ storm_memset_func_en(bp, p->func_id, 1);
+
+ /* spq */
+ if (p->func_flgs & FUNC_FLG_SPQ) {
+ storm_memset_spq_addr(bp, p->spq_map, p->func_id);
+ REG_WR(bp, XSEM_REG_FAST_MEMORY +
+ XSTORM_SPQ_PROD_OFFSET(p->func_id), p->spq_prod);
+ }
+}
+
+/**
+ * bnx2x_get_tx_only_flags - Return common flags
+ *
+ * @bp device handle
+ * @fp queue handle
+ * @zero_stats TRUE if statistics zeroing is needed
+ *
+ * Return the flags that are common for the Tx-only and not normal connections.
+ */
+static inline unsigned long bnx2x_get_common_flags(struct bnx2x *bp,
+ struct bnx2x_fastpath *fp,
+ bool zero_stats)
+{
+ unsigned long flags = 0;
+
+ /* PF driver will always initialize the Queue to an ACTIVE state */
+ __set_bit(BNX2X_Q_FLG_ACTIVE, &flags);
+
+ /* tx only connections collect statistics (on the same index as the
+ * parent connection). The statistics are zeroed when the parent
+ * connection is initialized.
+ */
+ if (stat_counter_valid(bp, fp)) {
+ __set_bit(BNX2X_Q_FLG_STATS, &flags);
+ if (zero_stats)
+ __set_bit(BNX2X_Q_FLG_ZERO_STATS, &flags);
+ }
+
+ return flags;
+}
+
+static inline unsigned long bnx2x_get_q_flags(struct bnx2x *bp,
+ struct bnx2x_fastpath *fp,
+ bool leading)
+{
+ unsigned long flags = 0;
+
+ /* calculate other queue flags */
+ if (IS_MF_SD(bp))
+ __set_bit(BNX2X_Q_FLG_OV, &flags);
+
+ if (IS_FCOE_FP(fp))
+ __set_bit(BNX2X_Q_FLG_FCOE, &flags);
+
+ if (!fp->disable_tpa) {
+ __set_bit(BNX2X_Q_FLG_TPA, &flags);
+ __set_bit(BNX2X_Q_FLG_TPA_IPV6, &flags);
+ }
+
+ if (leading) {
+ __set_bit(BNX2X_Q_FLG_LEADING_RSS, &flags);
+ __set_bit(BNX2X_Q_FLG_MCAST, &flags);
+ }
+
+ /* Always set HW VLAN stripping */
+ __set_bit(BNX2X_Q_FLG_VLAN, &flags);
+
+
+ return flags | bnx2x_get_common_flags(bp, fp, true);
+}
+
+static void bnx2x_pf_q_prep_general(struct bnx2x *bp,
+ struct bnx2x_fastpath *fp, struct bnx2x_general_setup_params *gen_init,
+ u8 cos)
+{
+ gen_init->stat_id = bnx2x_stats_id(fp);
+ gen_init->spcl_id = fp->cl_id;
+
+ /* Always use mini-jumbo MTU for FCoE L2 ring */
+ if (IS_FCOE_FP(fp))
+ gen_init->mtu = BNX2X_FCOE_MINI_JUMBO_MTU;
+ else
+ gen_init->mtu = bp->dev->mtu;
+
+ gen_init->cos = cos;
+}
+
+static void bnx2x_pf_rx_q_prep(struct bnx2x *bp,
+ struct bnx2x_fastpath *fp, struct rxq_pause_params *pause,
+ struct bnx2x_rxq_setup_params *rxq_init)
+{
+ u8 max_sge = 0;
+ u16 sge_sz = 0;
+ u16 tpa_agg_size = 0;
+
+ if (!fp->disable_tpa) {
+ pause->sge_th_hi = 250;
+ pause->sge_th_lo = 150;
+ tpa_agg_size = min_t(u32,
+ (min_t(u32, 8, MAX_SKB_FRAGS) *
+ SGE_PAGE_SIZE * PAGES_PER_SGE), 0xffff);
+ max_sge = SGE_PAGE_ALIGN(bp->dev->mtu) >>
+ SGE_PAGE_SHIFT;
+ max_sge = ((max_sge + PAGES_PER_SGE - 1) &
+ (~(PAGES_PER_SGE-1))) >> PAGES_PER_SGE_SHIFT;
+ sge_sz = (u16)min_t(u32, SGE_PAGE_SIZE * PAGES_PER_SGE,
+ 0xffff);
+ }
+
+ /* pause - not for e1 */
+ if (!CHIP_IS_E1(bp)) {
+ pause->bd_th_hi = 350;
+ pause->bd_th_lo = 250;
+ pause->rcq_th_hi = 350;
+ pause->rcq_th_lo = 250;
+
+ pause->pri_map = 1;
+ }
+
+ /* rxq setup */
+ rxq_init->dscr_map = fp->rx_desc_mapping;
+ rxq_init->sge_map = fp->rx_sge_mapping;
+ rxq_init->rcq_map = fp->rx_comp_mapping;
+ rxq_init->rcq_np_map = fp->rx_comp_mapping + BCM_PAGE_SIZE;
+
+ /* This should be a maximum number of data bytes that may be
+ * placed on the BD (not including paddings).
+ */
+ rxq_init->buf_sz = fp->rx_buf_size - BNX2X_FW_RX_ALIGN -
+ IP_HEADER_ALIGNMENT_PADDING;
+
+ rxq_init->cl_qzone_id = fp->cl_qzone_id;
+ rxq_init->tpa_agg_sz = tpa_agg_size;
+ rxq_init->sge_buf_sz = sge_sz;
+ rxq_init->max_sges_pkt = max_sge;
+ rxq_init->rss_engine_id = BP_FUNC(bp);
+
+ /* Maximum number or simultaneous TPA aggregation for this Queue.
+ *
+ * For PF Clients it should be the maximum avaliable number.
+ * VF driver(s) may want to define it to a smaller value.
+ */
+ rxq_init->max_tpa_queues =
+ (CHIP_IS_E1(bp) ? ETH_MAX_AGGREGATION_QUEUES_E1 :
+ ETH_MAX_AGGREGATION_QUEUES_E1H_E2);
+
+ rxq_init->cache_line_log = BNX2X_RX_ALIGN_SHIFT;
+ rxq_init->fw_sb_id = fp->fw_sb_id;
+
+ if (IS_FCOE_FP(fp))
+ rxq_init->sb_cq_index = HC_SP_INDEX_ETH_FCOE_RX_CQ_CONS;
+ else
+ rxq_init->sb_cq_index = HC_INDEX_ETH_RX_CQ_CONS;
+}
+
+static void bnx2x_pf_tx_q_prep(struct bnx2x *bp,
+ struct bnx2x_fastpath *fp, struct bnx2x_txq_setup_params *txq_init,
+ u8 cos)
+{
+ txq_init->dscr_map = fp->txdata[cos].tx_desc_mapping;
+ txq_init->sb_cq_index = HC_INDEX_ETH_FIRST_TX_CQ_CONS + cos;
+ txq_init->traffic_type = LLFC_TRAFFIC_TYPE_NW;
+ txq_init->fw_sb_id = fp->fw_sb_id;
+
+ /*
+ * set the tss leading client id for TX classfication ==
+ * leading RSS client id
+ */
+ txq_init->tss_leading_cl_id = bnx2x_fp(bp, 0, cl_id);
+
+ if (IS_FCOE_FP(fp)) {
+ txq_init->sb_cq_index = HC_SP_INDEX_ETH_FCOE_TX_CQ_CONS;
+ txq_init->traffic_type = LLFC_TRAFFIC_TYPE_FCOE;
+ }
+}
+
+static void bnx2x_pf_init(struct bnx2x *bp)
+{
+ struct bnx2x_func_init_params func_init = {0};
+ struct event_ring_data eq_data = { {0} };
+ u16 flags;
+
+ if (!CHIP_IS_E1x(bp)) {
+ /* reset IGU PF statistics: MSIX + ATTN */
+ /* PF */
+ REG_WR(bp, IGU_REG_STATISTIC_NUM_MESSAGE_SENT +
+ BNX2X_IGU_STAS_MSG_VF_CNT*4 +
+ (CHIP_MODE_IS_4_PORT(bp) ?
+ BP_FUNC(bp) : BP_VN(bp))*4, 0);
+ /* ATTN */
+ REG_WR(bp, IGU_REG_STATISTIC_NUM_MESSAGE_SENT +
+ BNX2X_IGU_STAS_MSG_VF_CNT*4 +
+ BNX2X_IGU_STAS_MSG_PF_CNT*4 +
+ (CHIP_MODE_IS_4_PORT(bp) ?
+ BP_FUNC(bp) : BP_VN(bp))*4, 0);
+ }
+
+ /* function setup flags */
+ flags = (FUNC_FLG_STATS | FUNC_FLG_LEADING | FUNC_FLG_SPQ);
+
+ /* This flag is relevant for E1x only.
+ * E2 doesn't have a TPA configuration in a function level.
+ */
+ flags |= (bp->flags & TPA_ENABLE_FLAG) ? FUNC_FLG_TPA : 0;
+
+ func_init.func_flgs = flags;
+ func_init.pf_id = BP_FUNC(bp);
+ func_init.func_id = BP_FUNC(bp);
+ func_init.spq_map = bp->spq_mapping;
+ func_init.spq_prod = bp->spq_prod_idx;
+
+ bnx2x_func_init(bp, &func_init);
+
+ memset(&(bp->cmng), 0, sizeof(struct cmng_struct_per_port));
+
+ /*
+ * Congestion management values depend on the link rate
+ * There is no active link so initial link rate is set to 10 Gbps.
+ * When the link comes up The congestion management values are
+ * re-calculated according to the actual link rate.
+ */
+ bp->link_vars.line_speed = SPEED_10000;
+ bnx2x_cmng_fns_init(bp, true, bnx2x_get_cmng_fns_mode(bp));
+
+ /* Only the PMF sets the HW */
+ if (bp->port.pmf)
+ storm_memset_cmng(bp, &bp->cmng, BP_PORT(bp));
+
+ /* init Event Queue */
+ eq_data.base_addr.hi = U64_HI(bp->eq_mapping);
+ eq_data.base_addr.lo = U64_LO(bp->eq_mapping);
+ eq_data.producer = bp->eq_prod;
+ eq_data.index_id = HC_SP_INDEX_EQ_CONS;
+ eq_data.sb_id = DEF_SB_ID;
+ storm_memset_eq_data(bp, &eq_data, BP_FUNC(bp));
+}
+
+
+static void bnx2x_e1h_disable(struct bnx2x *bp)
+{
+ int port = BP_PORT(bp);
+
+ bnx2x_tx_disable(bp);
+
+ REG_WR(bp, NIG_REG_LLH0_FUNC_EN + port*8, 0);
+}
+
+static void bnx2x_e1h_enable(struct bnx2x *bp)
+{
+ int port = BP_PORT(bp);
+
+ REG_WR(bp, NIG_REG_LLH0_FUNC_EN + port*8, 1);
+
+ /* Tx queue should be only reenabled */
+ netif_tx_wake_all_queues(bp->dev);
+
+ /*
+ * Should not call netif_carrier_on since it will be called if the link
+ * is up when checking for link state
+ */
+}
+
+/* called due to MCP event (on pmf):
+ * reread new bandwidth configuration
+ * configure FW
+ * notify others function about the change
+ */
+static inline void bnx2x_config_mf_bw(struct bnx2x *bp)
+{
+ if (bp->link_vars.link_up) {
+ bnx2x_cmng_fns_init(bp, true, CMNG_FNS_MINMAX);
+ bnx2x_link_sync_notify(bp);
+ }
+ storm_memset_cmng(bp, &bp->cmng, BP_PORT(bp));
+}
+
+static inline void bnx2x_set_mf_bw(struct bnx2x *bp)
+{
+ bnx2x_config_mf_bw(bp);
+ bnx2x_fw_command(bp, DRV_MSG_CODE_SET_MF_BW_ACK, 0);
+}
+
+static void bnx2x_dcc_event(struct bnx2x *bp, u32 dcc_event)
+{
+ DP(BNX2X_MSG_MCP, "dcc_event 0x%x\n", dcc_event);
+
+ if (dcc_event & DRV_STATUS_DCC_DISABLE_ENABLE_PF) {
+
+ /*
+ * This is the only place besides the function initialization
+ * where the bp->flags can change so it is done without any
+ * locks
+ */
+ if (bp->mf_config[BP_VN(bp)] & FUNC_MF_CFG_FUNC_DISABLED) {
+ DP(NETIF_MSG_IFDOWN, "mf_cfg function disabled\n");
+ bp->flags |= MF_FUNC_DIS;
+
+ bnx2x_e1h_disable(bp);
+ } else {
+ DP(NETIF_MSG_IFUP, "mf_cfg function enabled\n");
+ bp->flags &= ~MF_FUNC_DIS;
+
+ bnx2x_e1h_enable(bp);
+ }
+ dcc_event &= ~DRV_STATUS_DCC_DISABLE_ENABLE_PF;
+ }
+ if (dcc_event & DRV_STATUS_DCC_BANDWIDTH_ALLOCATION) {
+ bnx2x_config_mf_bw(bp);
+ dcc_event &= ~DRV_STATUS_DCC_BANDWIDTH_ALLOCATION;
+ }
+
+ /* Report results to MCP */
+ if (dcc_event)
+ bnx2x_fw_command(bp, DRV_MSG_CODE_DCC_FAILURE, 0);
+ else
+ bnx2x_fw_command(bp, DRV_MSG_CODE_DCC_OK, 0);
+}
+
+/* must be called under the spq lock */
+static inline struct eth_spe *bnx2x_sp_get_next(struct bnx2x *bp)
+{
+ struct eth_spe *next_spe = bp->spq_prod_bd;
+
+ if (bp->spq_prod_bd == bp->spq_last_bd) {
+ bp->spq_prod_bd = bp->spq;
+ bp->spq_prod_idx = 0;
+ DP(NETIF_MSG_TIMER, "end of spq\n");
+ } else {
+ bp->spq_prod_bd++;
+ bp->spq_prod_idx++;
+ }
+ return next_spe;
+}
+
+/* must be called under the spq lock */
+static inline void bnx2x_sp_prod_update(struct bnx2x *bp)
+{
+ int func = BP_FUNC(bp);
+
+ /*
+ * Make sure that BD data is updated before writing the producer:
+ * BD data is written to the memory, the producer is read from the
+ * memory, thus we need a full memory barrier to ensure the ordering.
+ */
+ mb();
+
+ REG_WR16(bp, BAR_XSTRORM_INTMEM + XSTORM_SPQ_PROD_OFFSET(func),
+ bp->spq_prod_idx);
+ mmiowb();
+}
+
+/**
+ * bnx2x_is_contextless_ramrod - check if the current command ends on EQ
+ *
+ * @cmd: command to check
+ * @cmd_type: command type
+ */
+static inline bool bnx2x_is_contextless_ramrod(int cmd, int cmd_type)
+{
+ if ((cmd_type == NONE_CONNECTION_TYPE) ||
+ (cmd == RAMROD_CMD_ID_ETH_FORWARD_SETUP) ||
+ (cmd == RAMROD_CMD_ID_ETH_CLASSIFICATION_RULES) ||
+ (cmd == RAMROD_CMD_ID_ETH_FILTER_RULES) ||
+ (cmd == RAMROD_CMD_ID_ETH_MULTICAST_RULES) ||
+ (cmd == RAMROD_CMD_ID_ETH_SET_MAC) ||
+ (cmd == RAMROD_CMD_ID_ETH_RSS_UPDATE))
+ return true;
+ else
+ return false;
+
+}
+
+
+/**
+ * bnx2x_sp_post - place a single command on an SP ring
+ *
+ * @bp: driver handle
+ * @command: command to place (e.g. SETUP, FILTER_RULES, etc.)
+ * @cid: SW CID the command is related to
+ * @data_hi: command private data address (high 32 bits)
+ * @data_lo: command private data address (low 32 bits)
+ * @cmd_type: command type (e.g. NONE, ETH)
+ *
+ * SP data is handled as if it's always an address pair, thus data fields are
+ * not swapped to little endian in upper functions. Instead this function swaps
+ * data as if it's two u32 fields.
+ */
+int bnx2x_sp_post(struct bnx2x *bp, int command, int cid,
+ u32 data_hi, u32 data_lo, int cmd_type)
+{
+ struct eth_spe *spe;
+ u16 type;
+ bool common = bnx2x_is_contextless_ramrod(command, cmd_type);
+
+#ifdef BNX2X_STOP_ON_ERROR
+ if (unlikely(bp->panic))
+ return -EIO;
+#endif
+
+ spin_lock_bh(&bp->spq_lock);
+
+ if (common) {
+ if (!atomic_read(&bp->eq_spq_left)) {
+ BNX2X_ERR("BUG! EQ ring full!\n");
+ spin_unlock_bh(&bp->spq_lock);
+ bnx2x_panic();
+ return -EBUSY;
+ }
+ } else if (!atomic_read(&bp->cq_spq_left)) {
+ BNX2X_ERR("BUG! SPQ ring full!\n");
+ spin_unlock_bh(&bp->spq_lock);
+ bnx2x_panic();
+ return -EBUSY;
+ }
+
+ spe = bnx2x_sp_get_next(bp);
+
+ /* CID needs port number to be encoded int it */
+ spe->hdr.conn_and_cmd_data =
+ cpu_to_le32((command << SPE_HDR_CMD_ID_SHIFT) |
+ HW_CID(bp, cid));
+
+ type = (cmd_type << SPE_HDR_CONN_TYPE_SHIFT) & SPE_HDR_CONN_TYPE;
+
+ type |= ((BP_FUNC(bp) << SPE_HDR_FUNCTION_ID_SHIFT) &
+ SPE_HDR_FUNCTION_ID);
+
+ spe->hdr.type = cpu_to_le16(type);
+
+ spe->data.update_data_addr.hi = cpu_to_le32(data_hi);
+ spe->data.update_data_addr.lo = cpu_to_le32(data_lo);
+
+ /*
+ * It's ok if the actual decrement is issued towards the memory
+ * somewhere between the spin_lock and spin_unlock. Thus no
+ * more explict memory barrier is needed.
+ */
+ if (common)
+ atomic_dec(&bp->eq_spq_left);
+ else
+ atomic_dec(&bp->cq_spq_left);
+
+
+ DP(BNX2X_MSG_SP/*NETIF_MSG_TIMER*/,
+ "SPQE[%x] (%x:%x) (cmd, common?) (%d,%d) hw_cid %x data (%x:%x) "
+ "type(0x%x) left (CQ, EQ) (%x,%x)\n",
+ bp->spq_prod_idx, (u32)U64_HI(bp->spq_mapping),
+ (u32)(U64_LO(bp->spq_mapping) +
+ (void *)bp->spq_prod_bd - (void *)bp->spq), command, common,
+ HW_CID(bp, cid), data_hi, data_lo, type,
+ atomic_read(&bp->cq_spq_left), atomic_read(&bp->eq_spq_left));
+
+ bnx2x_sp_prod_update(bp);
+ spin_unlock_bh(&bp->spq_lock);
+ return 0;
+}
+
+/* acquire split MCP access lock register */
+static int bnx2x_acquire_alr(struct bnx2x *bp)
+{
+ u32 j, val;
+ int rc = 0;
+
+ might_sleep();
+ for (j = 0; j < 1000; j++) {
+ val = (1UL << 31);
+ REG_WR(bp, GRCBASE_MCP + 0x9c, val);
+ val = REG_RD(bp, GRCBASE_MCP + 0x9c);
+ if (val & (1L << 31))
+ break;
+
+ msleep(5);
+ }
+ if (!(val & (1L << 31))) {
+ BNX2X_ERR("Cannot acquire MCP access lock register\n");
+ rc = -EBUSY;
+ }
+
+ return rc;
+}
+
+/* release split MCP access lock register */
+static void bnx2x_release_alr(struct bnx2x *bp)
+{
+ REG_WR(bp, GRCBASE_MCP + 0x9c, 0);
+}
+
+#define BNX2X_DEF_SB_ATT_IDX 0x0001
+#define BNX2X_DEF_SB_IDX 0x0002
+
+static inline u16 bnx2x_update_dsb_idx(struct bnx2x *bp)
+{
+ struct host_sp_status_block *def_sb = bp->def_status_blk;
+ u16 rc = 0;
+
+ barrier(); /* status block is written to by the chip */
+ if (bp->def_att_idx != def_sb->atten_status_block.attn_bits_index) {
+ bp->def_att_idx = def_sb->atten_status_block.attn_bits_index;
+ rc |= BNX2X_DEF_SB_ATT_IDX;
+ }
+
+ if (bp->def_idx != def_sb->sp_sb.running_index) {
+ bp->def_idx = def_sb->sp_sb.running_index;
+ rc |= BNX2X_DEF_SB_IDX;
+ }
+
+ /* Do not reorder: indecies reading should complete before handling */
+ barrier();
+ return rc;
+}
+
+/*
+ * slow path service functions
+ */
+
+static void bnx2x_attn_int_asserted(struct bnx2x *bp, u32 asserted)
+{
+ int port = BP_PORT(bp);
+ u32 aeu_addr = port ? MISC_REG_AEU_MASK_ATTN_FUNC_1 :
+ MISC_REG_AEU_MASK_ATTN_FUNC_0;
+ u32 nig_int_mask_addr = port ? NIG_REG_MASK_INTERRUPT_PORT1 :
+ NIG_REG_MASK_INTERRUPT_PORT0;
+ u32 aeu_mask;
+ u32 nig_mask = 0;
+ u32 reg_addr;
+
+ if (bp->attn_state & asserted)
+ BNX2X_ERR("IGU ERROR\n");
+
+ bnx2x_acquire_hw_lock(bp, HW_LOCK_RESOURCE_PORT0_ATT_MASK + port);
+ aeu_mask = REG_RD(bp, aeu_addr);
+
+ DP(NETIF_MSG_HW, "aeu_mask %x newly asserted %x\n",
+ aeu_mask, asserted);
+ aeu_mask &= ~(asserted & 0x3ff);
+ DP(NETIF_MSG_HW, "new mask %x\n", aeu_mask);
+
+ REG_WR(bp, aeu_addr, aeu_mask);
+ bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_PORT0_ATT_MASK + port);
+
+ DP(NETIF_MSG_HW, "attn_state %x\n", bp->attn_state);
+ bp->attn_state |= asserted;
+ DP(NETIF_MSG_HW, "new state %x\n", bp->attn_state);
+
+ if (asserted & ATTN_HARD_WIRED_MASK) {
+ if (asserted & ATTN_NIG_FOR_FUNC) {
+
+ bnx2x_acquire_phy_lock(bp);
+
+ /* save nig interrupt mask */
+ nig_mask = REG_RD(bp, nig_int_mask_addr);
+
+ /* If nig_mask is not set, no need to call the update
+ * function.
+ */
+ if (nig_mask) {
+ REG_WR(bp, nig_int_mask_addr, 0);
+
+ bnx2x_link_attn(bp);
+ }
+
+ /* handle unicore attn? */
+ }
+ if (asserted & ATTN_SW_TIMER_4_FUNC)
+ DP(NETIF_MSG_HW, "ATTN_SW_TIMER_4_FUNC!\n");
+
+ if (asserted & GPIO_2_FUNC)
+ DP(NETIF_MSG_HW, "GPIO_2_FUNC!\n");
+
+ if (asserted & GPIO_3_FUNC)
+ DP(NETIF_MSG_HW, "GPIO_3_FUNC!\n");
+
+ if (asserted & GPIO_4_FUNC)
+ DP(NETIF_MSG_HW, "GPIO_4_FUNC!\n");
+
+ if (port == 0) {
+ if (asserted & ATTN_GENERAL_ATTN_1) {
+ DP(NETIF_MSG_HW, "ATTN_GENERAL_ATTN_1!\n");
+ REG_WR(bp, MISC_REG_AEU_GENERAL_ATTN_1, 0x0);
+ }
+ if (asserted & ATTN_GENERAL_ATTN_2) {
+ DP(NETIF_MSG_HW, "ATTN_GENERAL_ATTN_2!\n");
+ REG_WR(bp, MISC_REG_AEU_GENERAL_ATTN_2, 0x0);
+ }
+ if (asserted & ATTN_GENERAL_ATTN_3) {
+ DP(NETIF_MSG_HW, "ATTN_GENERAL_ATTN_3!\n");
+ REG_WR(bp, MISC_REG_AEU_GENERAL_ATTN_3, 0x0);
+ }
+ } else {
+ if (asserted & ATTN_GENERAL_ATTN_4) {
+ DP(NETIF_MSG_HW, "ATTN_GENERAL_ATTN_4!\n");
+ REG_WR(bp, MISC_REG_AEU_GENERAL_ATTN_4, 0x0);
+ }
+ if (asserted & ATTN_GENERAL_ATTN_5) {
+ DP(NETIF_MSG_HW, "ATTN_GENERAL_ATTN_5!\n");
+ REG_WR(bp, MISC_REG_AEU_GENERAL_ATTN_5, 0x0);
+ }
+ if (asserted & ATTN_GENERAL_ATTN_6) {
+ DP(NETIF_MSG_HW, "ATTN_GENERAL_ATTN_6!\n");
+ REG_WR(bp, MISC_REG_AEU_GENERAL_ATTN_6, 0x0);
+ }
+ }
+
+ } /* if hardwired */
+
+ if (bp->common.int_block == INT_BLOCK_HC)
+ reg_addr = (HC_REG_COMMAND_REG + port*32 +
+ COMMAND_REG_ATTN_BITS_SET);
+ else
+ reg_addr = (BAR_IGU_INTMEM + IGU_CMD_ATTN_BIT_SET_UPPER*8);
+
+ DP(NETIF_MSG_HW, "about to mask 0x%08x at %s addr 0x%x\n", asserted,
+ (bp->common.int_block == INT_BLOCK_HC) ? "HC" : "IGU", reg_addr);
+ REG_WR(bp, reg_addr, asserted);
+
+ /* now set back the mask */
+ if (asserted & ATTN_NIG_FOR_FUNC) {
+ REG_WR(bp, nig_int_mask_addr, nig_mask);
+ bnx2x_release_phy_lock(bp);
+ }
+}
+
+static inline void bnx2x_fan_failure(struct bnx2x *bp)
+{
+ int port = BP_PORT(bp);
+ u32 ext_phy_config;
+ /* mark the failure */
+ ext_phy_config =
+ SHMEM_RD(bp,
+ dev_info.port_hw_config[port].external_phy_config);
+
+ ext_phy_config &= ~PORT_HW_CFG_XGXS_EXT_PHY_TYPE_MASK;
+ ext_phy_config |= PORT_HW_CFG_XGXS_EXT_PHY_TYPE_FAILURE;
+ SHMEM_WR(bp, dev_info.port_hw_config[port].external_phy_config,
+ ext_phy_config);
+
+ /* log the failure */
+ netdev_err(bp->dev, "Fan Failure on Network Controller has caused"
+ " the driver to shutdown the card to prevent permanent"
+ " damage. Please contact OEM Support for assistance\n");
+}
+
+static inline void bnx2x_attn_int_deasserted0(struct bnx2x *bp, u32 attn)
+{
+ int port = BP_PORT(bp);
+ int reg_offset;
+ u32 val;
+
+ reg_offset = (port ? MISC_REG_AEU_ENABLE1_FUNC_1_OUT_0 :
+ MISC_REG_AEU_ENABLE1_FUNC_0_OUT_0);
+
+ if (attn & AEU_INPUTS_ATTN_BITS_SPIO5) {
+
+ val = REG_RD(bp, reg_offset);
+ val &= ~AEU_INPUTS_ATTN_BITS_SPIO5;
+ REG_WR(bp, reg_offset, val);
+
+ BNX2X_ERR("SPIO5 hw attention\n");
+
+ /* Fan failure attention */
+ bnx2x_hw_reset_phy(&bp->link_params);
+ bnx2x_fan_failure(bp);
+ }
+
+ if ((attn & bp->link_vars.aeu_int_mask) && bp->port.pmf) {
+ bnx2x_acquire_phy_lock(bp);
+ bnx2x_handle_module_detect_int(&bp->link_params);
+ bnx2x_release_phy_lock(bp);
+ }
+
+ if (attn & HW_INTERRUT_ASSERT_SET_0) {
+
+ val = REG_RD(bp, reg_offset);
+ val &= ~(attn & HW_INTERRUT_ASSERT_SET_0);
+ REG_WR(bp, reg_offset, val);
+
+ BNX2X_ERR("FATAL HW block attention set0 0x%x\n",
+ (u32)(attn & HW_INTERRUT_ASSERT_SET_0));
+ bnx2x_panic();
+ }
+}
+
+static inline void bnx2x_attn_int_deasserted1(struct bnx2x *bp, u32 attn)
+{
+ u32 val;
+
+ if (attn & AEU_INPUTS_ATTN_BITS_DOORBELLQ_HW_INTERRUPT) {
+
+ val = REG_RD(bp, DORQ_REG_DORQ_INT_STS_CLR);
+ BNX2X_ERR("DB hw attention 0x%x\n", val);
+ /* DORQ discard attention */
+ if (val & 0x2)
+ BNX2X_ERR("FATAL error from DORQ\n");
+ }
+
+ if (attn & HW_INTERRUT_ASSERT_SET_1) {
+
+ int port = BP_PORT(bp);
+ int reg_offset;
+
+ reg_offset = (port ? MISC_REG_AEU_ENABLE1_FUNC_1_OUT_1 :
+ MISC_REG_AEU_ENABLE1_FUNC_0_OUT_1);
+
+ val = REG_RD(bp, reg_offset);
+ val &= ~(attn & HW_INTERRUT_ASSERT_SET_1);
+ REG_WR(bp, reg_offset, val);
+
+ BNX2X_ERR("FATAL HW block attention set1 0x%x\n",
+ (u32)(attn & HW_INTERRUT_ASSERT_SET_1));
+ bnx2x_panic();
+ }
+}
+
+static inline void bnx2x_attn_int_deasserted2(struct bnx2x *bp, u32 attn)
+{
+ u32 val;
+
+ if (attn & AEU_INPUTS_ATTN_BITS_CFC_HW_INTERRUPT) {
+
+ val = REG_RD(bp, CFC_REG_CFC_INT_STS_CLR);
+ BNX2X_ERR("CFC hw attention 0x%x\n", val);
+ /* CFC error attention */
+ if (val & 0x2)
+ BNX2X_ERR("FATAL error from CFC\n");
+ }
+
+ if (attn & AEU_INPUTS_ATTN_BITS_PXP_HW_INTERRUPT) {
+ val = REG_RD(bp, PXP_REG_PXP_INT_STS_CLR_0);
+ BNX2X_ERR("PXP hw attention-0 0x%x\n", val);
+ /* RQ_USDMDP_FIFO_OVERFLOW */
+ if (val & 0x18000)
+ BNX2X_ERR("FATAL error from PXP\n");
+
+ if (!CHIP_IS_E1x(bp)) {
+ val = REG_RD(bp, PXP_REG_PXP_INT_STS_CLR_1);
+ BNX2X_ERR("PXP hw attention-1 0x%x\n", val);
+ }
+ }
+
+ if (attn & HW_INTERRUT_ASSERT_SET_2) {
+
+ int port = BP_PORT(bp);
+ int reg_offset;
+
+ reg_offset = (port ? MISC_REG_AEU_ENABLE1_FUNC_1_OUT_2 :
+ MISC_REG_AEU_ENABLE1_FUNC_0_OUT_2);
+
+ val = REG_RD(bp, reg_offset);
+ val &= ~(attn & HW_INTERRUT_ASSERT_SET_2);
+ REG_WR(bp, reg_offset, val);
+
+ BNX2X_ERR("FATAL HW block attention set2 0x%x\n",
+ (u32)(attn & HW_INTERRUT_ASSERT_SET_2));
+ bnx2x_panic();
+ }
+}
+
+static inline void bnx2x_attn_int_deasserted3(struct bnx2x *bp, u32 attn)
+{
+ u32 val;
+
+ if (attn & EVEREST_GEN_ATTN_IN_USE_MASK) {
+
+ if (attn & BNX2X_PMF_LINK_ASSERT) {
+ int func = BP_FUNC(bp);
+
+ REG_WR(bp, MISC_REG_AEU_GENERAL_ATTN_12 + func*4, 0);
+ bp->mf_config[BP_VN(bp)] = MF_CFG_RD(bp,
+ func_mf_config[BP_ABS_FUNC(bp)].config);
+ val = SHMEM_RD(bp,
+ func_mb[BP_FW_MB_IDX(bp)].drv_status);
+ if (val & DRV_STATUS_DCC_EVENT_MASK)
+ bnx2x_dcc_event(bp,
+ (val & DRV_STATUS_DCC_EVENT_MASK));
+
+ if (val & DRV_STATUS_SET_MF_BW)
+ bnx2x_set_mf_bw(bp);
+
+ if ((bp->port.pmf == 0) && (val & DRV_STATUS_PMF))
+ bnx2x_pmf_update(bp);
+
+ if (bp->port.pmf &&
+ (val & DRV_STATUS_DCBX_NEGOTIATION_RESULTS) &&
+ bp->dcbx_enabled > 0)
+ /* start dcbx state machine */
+ bnx2x_dcbx_set_params(bp,
+ BNX2X_DCBX_STATE_NEG_RECEIVED);
+ if (bp->link_vars.periodic_flags &
+ PERIODIC_FLAGS_LINK_EVENT) {
+ /* sync with link */
+ bnx2x_acquire_phy_lock(bp);
+ bp->link_vars.periodic_flags &=
+ ~PERIODIC_FLAGS_LINK_EVENT;
+ bnx2x_release_phy_lock(bp);
+ if (IS_MF(bp))
+ bnx2x_link_sync_notify(bp);
+ bnx2x_link_report(bp);
+ }
+ /* Always call it here: bnx2x_link_report() will
+ * prevent the link indication duplication.
+ */
+ bnx2x__link_status_update(bp);
+ } else if (attn & BNX2X_MC_ASSERT_BITS) {
+
+ BNX2X_ERR("MC assert!\n");
+ bnx2x_mc_assert(bp);
+ REG_WR(bp, MISC_REG_AEU_GENERAL_ATTN_10, 0);
+ REG_WR(bp, MISC_REG_AEU_GENERAL_ATTN_9, 0);
+ REG_WR(bp, MISC_REG_AEU_GENERAL_ATTN_8, 0);
+ REG_WR(bp, MISC_REG_AEU_GENERAL_ATTN_7, 0);
+ bnx2x_panic();
+
+ } else if (attn & BNX2X_MCP_ASSERT) {
+
+ BNX2X_ERR("MCP assert!\n");
+ REG_WR(bp, MISC_REG_AEU_GENERAL_ATTN_11, 0);
+ bnx2x_fw_dump(bp);
+
+ } else
+ BNX2X_ERR("Unknown HW assert! (attn 0x%x)\n", attn);
+ }
+
+ if (attn & EVEREST_LATCHED_ATTN_IN_USE_MASK) {
+ BNX2X_ERR("LATCHED attention 0x%08x (masked)\n", attn);
+ if (attn & BNX2X_GRC_TIMEOUT) {
+ val = CHIP_IS_E1(bp) ? 0 :
+ REG_RD(bp, MISC_REG_GRC_TIMEOUT_ATTN);
+ BNX2X_ERR("GRC time-out 0x%08x\n", val);
+ }
+ if (attn & BNX2X_GRC_RSV) {
+ val = CHIP_IS_E1(bp) ? 0 :
+ REG_RD(bp, MISC_REG_GRC_RSV_ATTN);
+ BNX2X_ERR("GRC reserved 0x%08x\n", val);
+ }
+ REG_WR(bp, MISC_REG_AEU_CLR_LATCH_SIGNAL, 0x7ff);
+ }
+}
+
+/*
+ * Bits map:
+ * 0-7 - Engine0 load counter.
+ * 8-15 - Engine1 load counter.
+ * 16 - Engine0 RESET_IN_PROGRESS bit.
+ * 17 - Engine1 RESET_IN_PROGRESS bit.
+ * 18 - Engine0 ONE_IS_LOADED. Set when there is at least one active function
+ * on the engine
+ * 19 - Engine1 ONE_IS_LOADED.
+ * 20 - Chip reset flow bit. When set none-leader must wait for both engines
+ * leader to complete (check for both RESET_IN_PROGRESS bits and not for
+ * just the one belonging to its engine).
+ *
+ */
+#define BNX2X_RECOVERY_GLOB_REG MISC_REG_GENERIC_POR_1
+
+#define BNX2X_PATH0_LOAD_CNT_MASK 0x000000ff
+#define BNX2X_PATH0_LOAD_CNT_SHIFT 0
+#define BNX2X_PATH1_LOAD_CNT_MASK 0x0000ff00
+#define BNX2X_PATH1_LOAD_CNT_SHIFT 8
+#define BNX2X_PATH0_RST_IN_PROG_BIT 0x00010000
+#define BNX2X_PATH1_RST_IN_PROG_BIT 0x00020000
+#define BNX2X_GLOBAL_RESET_BIT 0x00040000
+
+/*
+ * Set the GLOBAL_RESET bit.
+ *
+ * Should be run under rtnl lock
+ */
+void bnx2x_set_reset_global(struct bnx2x *bp)
+{
+ u32 val = REG_RD(bp, BNX2X_RECOVERY_GLOB_REG);
+
+ REG_WR(bp, BNX2X_RECOVERY_GLOB_REG, val | BNX2X_GLOBAL_RESET_BIT);
+ barrier();
+ mmiowb();
+}
+
+/*
+ * Clear the GLOBAL_RESET bit.
+ *
+ * Should be run under rtnl lock
+ */
+static inline void bnx2x_clear_reset_global(struct bnx2x *bp)
+{
+ u32 val = REG_RD(bp, BNX2X_RECOVERY_GLOB_REG);
+
+ REG_WR(bp, BNX2X_RECOVERY_GLOB_REG, val & (~BNX2X_GLOBAL_RESET_BIT));
+ barrier();
+ mmiowb();
+}
+
+/*
+ * Checks the GLOBAL_RESET bit.
+ *
+ * should be run under rtnl lock
+ */
+static inline bool bnx2x_reset_is_global(struct bnx2x *bp)
+{
+ u32 val = REG_RD(bp, BNX2X_RECOVERY_GLOB_REG);
+
+ DP(NETIF_MSG_HW, "GEN_REG_VAL=0x%08x\n", val);
+ return (val & BNX2X_GLOBAL_RESET_BIT) ? true : false;
+}
+
+/*
+ * Clear RESET_IN_PROGRESS bit for the current engine.
+ *
+ * Should be run under rtnl lock
+ */
+static inline void bnx2x_set_reset_done(struct bnx2x *bp)
+{
+ u32 val = REG_RD(bp, BNX2X_RECOVERY_GLOB_REG);
+ u32 bit = BP_PATH(bp) ?
+ BNX2X_PATH1_RST_IN_PROG_BIT : BNX2X_PATH0_RST_IN_PROG_BIT;
+
+ /* Clear the bit */
+ val &= ~bit;
+ REG_WR(bp, BNX2X_RECOVERY_GLOB_REG, val);
+ barrier();
+ mmiowb();
+}
+
+/*
+ * Set RESET_IN_PROGRESS for the current engine.
+ *
+ * should be run under rtnl lock
+ */
+void bnx2x_set_reset_in_progress(struct bnx2x *bp)
+{
+ u32 val = REG_RD(bp, BNX2X_RECOVERY_GLOB_REG);
+ u32 bit = BP_PATH(bp) ?
+ BNX2X_PATH1_RST_IN_PROG_BIT : BNX2X_PATH0_RST_IN_PROG_BIT;
+
+ /* Set the bit */
+ val |= bit;
+ REG_WR(bp, BNX2X_RECOVERY_GLOB_REG, val);
+ barrier();
+ mmiowb();
+}
+
+/*
+ * Checks the RESET_IN_PROGRESS bit for the given engine.
+ * should be run under rtnl lock
+ */
+bool bnx2x_reset_is_done(struct bnx2x *bp, int engine)
+{
+ u32 val = REG_RD(bp, BNX2X_RECOVERY_GLOB_REG);
+ u32 bit = engine ?
+ BNX2X_PATH1_RST_IN_PROG_BIT : BNX2X_PATH0_RST_IN_PROG_BIT;
+
+ /* return false if bit is set */
+ return (val & bit) ? false : true;
+}
+
+/*
+ * Increment the load counter for the current engine.
+ *
+ * should be run under rtnl lock
+ */
+void bnx2x_inc_load_cnt(struct bnx2x *bp)
+{
+ u32 val1, val = REG_RD(bp, BNX2X_RECOVERY_GLOB_REG);
+ u32 mask = BP_PATH(bp) ? BNX2X_PATH1_LOAD_CNT_MASK :
+ BNX2X_PATH0_LOAD_CNT_MASK;
+ u32 shift = BP_PATH(bp) ? BNX2X_PATH1_LOAD_CNT_SHIFT :
+ BNX2X_PATH0_LOAD_CNT_SHIFT;
+
+ DP(NETIF_MSG_HW, "Old GEN_REG_VAL=0x%08x\n", val);
+
+ /* get the current counter value */
+ val1 = (val & mask) >> shift;
+
+ /* increment... */
+ val1++;
+
+ /* clear the old value */
+ val &= ~mask;
+
+ /* set the new one */
+ val |= ((val1 << shift) & mask);
+
+ REG_WR(bp, BNX2X_RECOVERY_GLOB_REG, val);
+ barrier();
+ mmiowb();
+}
+
+/**
+ * bnx2x_dec_load_cnt - decrement the load counter
+ *
+ * @bp: driver handle
+ *
+ * Should be run under rtnl lock.
+ * Decrements the load counter for the current engine. Returns
+ * the new counter value.
+ */
+u32 bnx2x_dec_load_cnt(struct bnx2x *bp)
+{
+ u32 val1, val = REG_RD(bp, BNX2X_RECOVERY_GLOB_REG);
+ u32 mask = BP_PATH(bp) ? BNX2X_PATH1_LOAD_CNT_MASK :
+ BNX2X_PATH0_LOAD_CNT_MASK;
+ u32 shift = BP_PATH(bp) ? BNX2X_PATH1_LOAD_CNT_SHIFT :
+ BNX2X_PATH0_LOAD_CNT_SHIFT;
+
+ DP(NETIF_MSG_HW, "Old GEN_REG_VAL=0x%08x\n", val);
+
+ /* get the current counter value */
+ val1 = (val & mask) >> shift;
+
+ /* decrement... */
+ val1--;
+
+ /* clear the old value */
+ val &= ~mask;
+
+ /* set the new one */
+ val |= ((val1 << shift) & mask);
+
+ REG_WR(bp, BNX2X_RECOVERY_GLOB_REG, val);
+ barrier();
+ mmiowb();
+
+ return val1;
+}
+
+/*
+ * Read the load counter for the current engine.
+ *
+ * should be run under rtnl lock
+ */
+static inline u32 bnx2x_get_load_cnt(struct bnx2x *bp, int engine)
+{
+ u32 mask = (engine ? BNX2X_PATH1_LOAD_CNT_MASK :
+ BNX2X_PATH0_LOAD_CNT_MASK);
+ u32 shift = (engine ? BNX2X_PATH1_LOAD_CNT_SHIFT :
+ BNX2X_PATH0_LOAD_CNT_SHIFT);
+ u32 val = REG_RD(bp, BNX2X_RECOVERY_GLOB_REG);
+
+ DP(NETIF_MSG_HW, "GLOB_REG=0x%08x\n", val);
+
+ val = (val & mask) >> shift;
+
+ DP(NETIF_MSG_HW, "load_cnt for engine %d = %d\n", engine, val);
+
+ return val;
+}
+
+/*
+ * Reset the load counter for the current engine.
+ *
+ * should be run under rtnl lock
+ */
+static inline void bnx2x_clear_load_cnt(struct bnx2x *bp)
+{
+ u32 val = REG_RD(bp, BNX2X_RECOVERY_GLOB_REG);
+ u32 mask = (BP_PATH(bp) ? BNX2X_PATH1_LOAD_CNT_MASK :
+ BNX2X_PATH0_LOAD_CNT_MASK);
+
+ REG_WR(bp, BNX2X_RECOVERY_GLOB_REG, val & (~mask));
+}
+
+static inline void _print_next_block(int idx, const char *blk)
+{
+ pr_cont("%s%s", idx ? ", " : "", blk);
+}
+
+static inline int bnx2x_check_blocks_with_parity0(u32 sig, int par_num,
+ bool print)
+{
+ int i = 0;
+ u32 cur_bit = 0;
+ for (i = 0; sig; i++) {
+ cur_bit = ((u32)0x1 << i);
+ if (sig & cur_bit) {
+ switch (cur_bit) {
+ case AEU_INPUTS_ATTN_BITS_BRB_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "BRB");
+ break;
+ case AEU_INPUTS_ATTN_BITS_PARSER_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "PARSER");
+ break;
+ case AEU_INPUTS_ATTN_BITS_TSDM_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "TSDM");
+ break;
+ case AEU_INPUTS_ATTN_BITS_SEARCHER_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++,
+ "SEARCHER");
+ break;
+ case AEU_INPUTS_ATTN_BITS_TCM_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "TCM");
+ break;
+ case AEU_INPUTS_ATTN_BITS_TSEMI_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "TSEMI");
+ break;
+ case AEU_INPUTS_ATTN_BITS_PBCLIENT_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "XPB");
+ break;
+ }
+
+ /* Clear the bit */
+ sig &= ~cur_bit;
+ }
+ }
+
+ return par_num;
+}
+
+static inline int bnx2x_check_blocks_with_parity1(u32 sig, int par_num,
+ bool *global, bool print)
+{
+ int i = 0;
+ u32 cur_bit = 0;
+ for (i = 0; sig; i++) {
+ cur_bit = ((u32)0x1 << i);
+ if (sig & cur_bit) {
+ switch (cur_bit) {
+ case AEU_INPUTS_ATTN_BITS_PBF_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "PBF");
+ break;
+ case AEU_INPUTS_ATTN_BITS_QM_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "QM");
+ break;
+ case AEU_INPUTS_ATTN_BITS_TIMERS_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "TM");
+ break;
+ case AEU_INPUTS_ATTN_BITS_XSDM_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "XSDM");
+ break;
+ case AEU_INPUTS_ATTN_BITS_XCM_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "XCM");
+ break;
+ case AEU_INPUTS_ATTN_BITS_XSEMI_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "XSEMI");
+ break;
+ case AEU_INPUTS_ATTN_BITS_DOORBELLQ_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++,
+ "DOORBELLQ");
+ break;
+ case AEU_INPUTS_ATTN_BITS_NIG_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "NIG");
+ break;
+ case AEU_INPUTS_ATTN_BITS_VAUX_PCI_CORE_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++,
+ "VAUX PCI CORE");
+ *global = true;
+ break;
+ case AEU_INPUTS_ATTN_BITS_DEBUG_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "DEBUG");
+ break;
+ case AEU_INPUTS_ATTN_BITS_USDM_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "USDM");
+ break;
+ case AEU_INPUTS_ATTN_BITS_UCM_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "UCM");
+ break;
+ case AEU_INPUTS_ATTN_BITS_USEMI_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "USEMI");
+ break;
+ case AEU_INPUTS_ATTN_BITS_UPB_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "UPB");
+ break;
+ case AEU_INPUTS_ATTN_BITS_CSDM_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "CSDM");
+ break;
+ case AEU_INPUTS_ATTN_BITS_CCM_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "CCM");
+ break;
+ }
+
+ /* Clear the bit */
+ sig &= ~cur_bit;
+ }
+ }
+
+ return par_num;
+}
+
+static inline int bnx2x_check_blocks_with_parity2(u32 sig, int par_num,
+ bool print)
+{
+ int i = 0;
+ u32 cur_bit = 0;
+ for (i = 0; sig; i++) {
+ cur_bit = ((u32)0x1 << i);
+ if (sig & cur_bit) {
+ switch (cur_bit) {
+ case AEU_INPUTS_ATTN_BITS_CSEMI_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "CSEMI");
+ break;
+ case AEU_INPUTS_ATTN_BITS_PXP_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "PXP");
+ break;
+ case AEU_IN_ATTN_BITS_PXPPCICLOCKCLIENT_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++,
+ "PXPPCICLOCKCLIENT");
+ break;
+ case AEU_INPUTS_ATTN_BITS_CFC_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "CFC");
+ break;
+ case AEU_INPUTS_ATTN_BITS_CDU_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "CDU");
+ break;
+ case AEU_INPUTS_ATTN_BITS_DMAE_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "DMAE");
+ break;
+ case AEU_INPUTS_ATTN_BITS_IGU_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "IGU");
+ break;
+ case AEU_INPUTS_ATTN_BITS_MISC_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "MISC");
+ break;
+ }
+
+ /* Clear the bit */
+ sig &= ~cur_bit;
+ }
+ }
+
+ return par_num;
+}
+
+static inline int bnx2x_check_blocks_with_parity3(u32 sig, int par_num,
+ bool *global, bool print)
+{
+ int i = 0;
+ u32 cur_bit = 0;
+ for (i = 0; sig; i++) {
+ cur_bit = ((u32)0x1 << i);
+ if (sig & cur_bit) {
+ switch (cur_bit) {
+ case AEU_INPUTS_ATTN_BITS_MCP_LATCHED_ROM_PARITY:
+ if (print)
+ _print_next_block(par_num++, "MCP ROM");
+ *global = true;
+ break;
+ case AEU_INPUTS_ATTN_BITS_MCP_LATCHED_UMP_RX_PARITY:
+ if (print)
+ _print_next_block(par_num++,
+ "MCP UMP RX");
+ *global = true;
+ break;
+ case AEU_INPUTS_ATTN_BITS_MCP_LATCHED_UMP_TX_PARITY:
+ if (print)
+ _print_next_block(par_num++,
+ "MCP UMP TX");
+ *global = true;
+ break;
+ case AEU_INPUTS_ATTN_BITS_MCP_LATCHED_SCPAD_PARITY:
+ if (print)
+ _print_next_block(par_num++,
+ "MCP SCPAD");
+ *global = true;
+ break;
+ }
+
+ /* Clear the bit */
+ sig &= ~cur_bit;
+ }
+ }
+
+ return par_num;
+}
+
+static inline int bnx2x_check_blocks_with_parity4(u32 sig, int par_num,
+ bool print)
+{
+ int i = 0;
+ u32 cur_bit = 0;
+ for (i = 0; sig; i++) {
+ cur_bit = ((u32)0x1 << i);
+ if (sig & cur_bit) {
+ switch (cur_bit) {
+ case AEU_INPUTS_ATTN_BITS_PGLUE_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "PGLUE_B");
+ break;
+ case AEU_INPUTS_ATTN_BITS_ATC_PARITY_ERROR:
+ if (print)
+ _print_next_block(par_num++, "ATC");
+ break;
+ }
+
+ /* Clear the bit */
+ sig &= ~cur_bit;
+ }
+ }
+
+ return par_num;
+}
+
+static inline bool bnx2x_parity_attn(struct bnx2x *bp, bool *global, bool print,
+ u32 *sig)
+{
+ if ((sig[0] & HW_PRTY_ASSERT_SET_0) ||
+ (sig[1] & HW_PRTY_ASSERT_SET_1) ||
+ (sig[2] & HW_PRTY_ASSERT_SET_2) ||
+ (sig[3] & HW_PRTY_ASSERT_SET_3) ||
+ (sig[4] & HW_PRTY_ASSERT_SET_4)) {
+ int par_num = 0;
+ DP(NETIF_MSG_HW, "Was parity error: HW block parity attention: "
+ "[0]:0x%08x [1]:0x%08x [2]:0x%08x [3]:0x%08x "
+ "[4]:0x%08x\n",
+ sig[0] & HW_PRTY_ASSERT_SET_0,
+ sig[1] & HW_PRTY_ASSERT_SET_1,
+ sig[2] & HW_PRTY_ASSERT_SET_2,
+ sig[3] & HW_PRTY_ASSERT_SET_3,
+ sig[4] & HW_PRTY_ASSERT_SET_4);
+ if (print)
+ netdev_err(bp->dev,
+ "Parity errors detected in blocks: ");
+ par_num = bnx2x_check_blocks_with_parity0(
+ sig[0] & HW_PRTY_ASSERT_SET_0, par_num, print);
+ par_num = bnx2x_check_blocks_with_parity1(
+ sig[1] & HW_PRTY_ASSERT_SET_1, par_num, global, print);
+ par_num = bnx2x_check_blocks_with_parity2(
+ sig[2] & HW_PRTY_ASSERT_SET_2, par_num, print);
+ par_num = bnx2x_check_blocks_with_parity3(
+ sig[3] & HW_PRTY_ASSERT_SET_3, par_num, global, print);
+ par_num = bnx2x_check_blocks_with_parity4(
+ sig[4] & HW_PRTY_ASSERT_SET_4, par_num, print);
+
+ if (print)
+ pr_cont("\n");
+
+ return true;
+ } else
+ return false;
+}
+
+/**
+ * bnx2x_chk_parity_attn - checks for parity attentions.
+ *
+ * @bp: driver handle
+ * @global: true if there was a global attention
+ * @print: show parity attention in syslog
+ */
+bool bnx2x_chk_parity_attn(struct bnx2x *bp, bool *global, bool print)
+{
+ struct attn_route attn = { {0} };
+ int port = BP_PORT(bp);
+
+ attn.sig[0] = REG_RD(bp,
+ MISC_REG_AEU_AFTER_INVERT_1_FUNC_0 +
+ port*4);
+ attn.sig[1] = REG_RD(bp,
+ MISC_REG_AEU_AFTER_INVERT_2_FUNC_0 +
+ port*4);
+ attn.sig[2] = REG_RD(bp,
+ MISC_REG_AEU_AFTER_INVERT_3_FUNC_0 +
+ port*4);
+ attn.sig[3] = REG_RD(bp,
+ MISC_REG_AEU_AFTER_INVERT_4_FUNC_0 +
+ port*4);
+
+ if (!CHIP_IS_E1x(bp))
+ attn.sig[4] = REG_RD(bp,
+ MISC_REG_AEU_AFTER_INVERT_5_FUNC_0 +
+ port*4);
+
+ return bnx2x_parity_attn(bp, global, print, attn.sig);
+}
+
+
+static inline void bnx2x_attn_int_deasserted4(struct bnx2x *bp, u32 attn)
+{
+ u32 val;
+ if (attn & AEU_INPUTS_ATTN_BITS_PGLUE_HW_INTERRUPT) {
+
+ val = REG_RD(bp, PGLUE_B_REG_PGLUE_B_INT_STS_CLR);
+ BNX2X_ERR("PGLUE hw attention 0x%x\n", val);
+ if (val & PGLUE_B_PGLUE_B_INT_STS_REG_ADDRESS_ERROR)
+ BNX2X_ERR("PGLUE_B_PGLUE_B_INT_STS_REG_"
+ "ADDRESS_ERROR\n");
+ if (val & PGLUE_B_PGLUE_B_INT_STS_REG_INCORRECT_RCV_BEHAVIOR)
+ BNX2X_ERR("PGLUE_B_PGLUE_B_INT_STS_REG_"
+ "INCORRECT_RCV_BEHAVIOR\n");
+ if (val & PGLUE_B_PGLUE_B_INT_STS_REG_WAS_ERROR_ATTN)
+ BNX2X_ERR("PGLUE_B_PGLUE_B_INT_STS_REG_"
+ "WAS_ERROR_ATTN\n");
+ if (val & PGLUE_B_PGLUE_B_INT_STS_REG_VF_LENGTH_VIOLATION_ATTN)
+ BNX2X_ERR("PGLUE_B_PGLUE_B_INT_STS_REG_"
+ "VF_LENGTH_VIOLATION_ATTN\n");
+ if (val &
+ PGLUE_B_PGLUE_B_INT_STS_REG_VF_GRC_SPACE_VIOLATION_ATTN)
+ BNX2X_ERR("PGLUE_B_PGLUE_B_INT_STS_REG_"
+ "VF_GRC_SPACE_VIOLATION_ATTN\n");
+ if (val &
+ PGLUE_B_PGLUE_B_INT_STS_REG_VF_MSIX_BAR_VIOLATION_ATTN)
+ BNX2X_ERR("PGLUE_B_PGLUE_B_INT_STS_REG_"
+ "VF_MSIX_BAR_VIOLATION_ATTN\n");
+ if (val & PGLUE_B_PGLUE_B_INT_STS_REG_TCPL_ERROR_ATTN)
+ BNX2X_ERR("PGLUE_B_PGLUE_B_INT_STS_REG_"
+ "TCPL_ERROR_ATTN\n");
+ if (val & PGLUE_B_PGLUE_B_INT_STS_REG_TCPL_IN_TWO_RCBS_ATTN)
+ BNX2X_ERR("PGLUE_B_PGLUE_B_INT_STS_REG_"
+ "TCPL_IN_TWO_RCBS_ATTN\n");
+ if (val & PGLUE_B_PGLUE_B_INT_STS_REG_CSSNOOP_FIFO_OVERFLOW)
+ BNX2X_ERR("PGLUE_B_PGLUE_B_INT_STS_REG_"
+ "CSSNOOP_FIFO_OVERFLOW\n");
+ }
+ if (attn & AEU_INPUTS_ATTN_BITS_ATC_HW_INTERRUPT) {
+ val = REG_RD(bp, ATC_REG_ATC_INT_STS_CLR);
+ BNX2X_ERR("ATC hw attention 0x%x\n", val);
+ if (val & ATC_ATC_INT_STS_REG_ADDRESS_ERROR)
+ BNX2X_ERR("ATC_ATC_INT_STS_REG_ADDRESS_ERROR\n");
+ if (val & ATC_ATC_INT_STS_REG_ATC_TCPL_TO_NOT_PEND)
+ BNX2X_ERR("ATC_ATC_INT_STS_REG"
+ "_ATC_TCPL_TO_NOT_PEND\n");
+ if (val & ATC_ATC_INT_STS_REG_ATC_GPA_MULTIPLE_HITS)
+ BNX2X_ERR("ATC_ATC_INT_STS_REG_"
+ "ATC_GPA_MULTIPLE_HITS\n");
+ if (val & ATC_ATC_INT_STS_REG_ATC_RCPL_TO_EMPTY_CNT)
+ BNX2X_ERR("ATC_ATC_INT_STS_REG_"
+ "ATC_RCPL_TO_EMPTY_CNT\n");
+ if (val & ATC_ATC_INT_STS_REG_ATC_TCPL_ERROR)
+ BNX2X_ERR("ATC_ATC_INT_STS_REG_ATC_TCPL_ERROR\n");
+ if (val & ATC_ATC_INT_STS_REG_ATC_IREQ_LESS_THAN_STU)
+ BNX2X_ERR("ATC_ATC_INT_STS_REG_"
+ "ATC_IREQ_LESS_THAN_STU\n");
+ }
+
+ if (attn & (AEU_INPUTS_ATTN_BITS_PGLUE_PARITY_ERROR |
+ AEU_INPUTS_ATTN_BITS_ATC_PARITY_ERROR)) {
+ BNX2X_ERR("FATAL parity attention set4 0x%x\n",
+ (u32)(attn & (AEU_INPUTS_ATTN_BITS_PGLUE_PARITY_ERROR |
+ AEU_INPUTS_ATTN_BITS_ATC_PARITY_ERROR)));
+ }
+
+}
+
+static void bnx2x_attn_int_deasserted(struct bnx2x *bp, u32 deasserted)
+{
+ struct attn_route attn, *group_mask;
+ int port = BP_PORT(bp);
+ int index;
+ u32 reg_addr;
+ u32 val;
+ u32 aeu_mask;
+ bool global = false;
+
+ /* need to take HW lock because MCP or other port might also
+ try to handle this event */
+ bnx2x_acquire_alr(bp);
+
+ if (bnx2x_chk_parity_attn(bp, &global, true)) {
+#ifndef BNX2X_STOP_ON_ERROR
+ bp->recovery_state = BNX2X_RECOVERY_INIT;
+ schedule_delayed_work(&bp->sp_rtnl_task, 0);
+ /* Disable HW interrupts */
+ bnx2x_int_disable(bp);
+ /* In case of parity errors don't handle attentions so that
+ * other function would "see" parity errors.
+ */
+#else
+ bnx2x_panic();
+#endif
+ bnx2x_release_alr(bp);
+ return;
+ }
+
+ attn.sig[0] = REG_RD(bp, MISC_REG_AEU_AFTER_INVERT_1_FUNC_0 + port*4);
+ attn.sig[1] = REG_RD(bp, MISC_REG_AEU_AFTER_INVERT_2_FUNC_0 + port*4);
+ attn.sig[2] = REG_RD(bp, MISC_REG_AEU_AFTER_INVERT_3_FUNC_0 + port*4);
+ attn.sig[3] = REG_RD(bp, MISC_REG_AEU_AFTER_INVERT_4_FUNC_0 + port*4);
+ if (!CHIP_IS_E1x(bp))
+ attn.sig[4] =
+ REG_RD(bp, MISC_REG_AEU_AFTER_INVERT_5_FUNC_0 + port*4);
+ else
+ attn.sig[4] = 0;
+
+ DP(NETIF_MSG_HW, "attn: %08x %08x %08x %08x %08x\n",
+ attn.sig[0], attn.sig[1], attn.sig[2], attn.sig[3], attn.sig[4]);
+
+ for (index = 0; index < MAX_DYNAMIC_ATTN_GRPS; index++) {
+ if (deasserted & (1 << index)) {
+ group_mask = &bp->attn_group[index];
+
+ DP(NETIF_MSG_HW, "group[%d]: %08x %08x "
+ "%08x %08x %08x\n",
+ index,
+ group_mask->sig[0], group_mask->sig[1],
+ group_mask->sig[2], group_mask->sig[3],
+ group_mask->sig[4]);
+
+ bnx2x_attn_int_deasserted4(bp,
+ attn.sig[4] & group_mask->sig[4]);
+ bnx2x_attn_int_deasserted3(bp,
+ attn.sig[3] & group_mask->sig[3]);
+ bnx2x_attn_int_deasserted1(bp,
+ attn.sig[1] & group_mask->sig[1]);
+ bnx2x_attn_int_deasserted2(bp,
+ attn.sig[2] & group_mask->sig[2]);
+ bnx2x_attn_int_deasserted0(bp,
+ attn.sig[0] & group_mask->sig[0]);
+ }
+ }
+
+ bnx2x_release_alr(bp);
+
+ if (bp->common.int_block == INT_BLOCK_HC)
+ reg_addr = (HC_REG_COMMAND_REG + port*32 +
+ COMMAND_REG_ATTN_BITS_CLR);
+ else
+ reg_addr = (BAR_IGU_INTMEM + IGU_CMD_ATTN_BIT_CLR_UPPER*8);
+
+ val = ~deasserted;
+ DP(NETIF_MSG_HW, "about to mask 0x%08x at %s addr 0x%x\n", val,
+ (bp->common.int_block == INT_BLOCK_HC) ? "HC" : "IGU", reg_addr);
+ REG_WR(bp, reg_addr, val);
+
+ if (~bp->attn_state & deasserted)
+ BNX2X_ERR("IGU ERROR\n");
+
+ reg_addr = port ? MISC_REG_AEU_MASK_ATTN_FUNC_1 :
+ MISC_REG_AEU_MASK_ATTN_FUNC_0;
+
+ bnx2x_acquire_hw_lock(bp, HW_LOCK_RESOURCE_PORT0_ATT_MASK + port);
+ aeu_mask = REG_RD(bp, reg_addr);
+
+ DP(NETIF_MSG_HW, "aeu_mask %x newly deasserted %x\n",
+ aeu_mask, deasserted);
+ aeu_mask |= (deasserted & 0x3ff);
+ DP(NETIF_MSG_HW, "new mask %x\n", aeu_mask);
+
+ REG_WR(bp, reg_addr, aeu_mask);
+ bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_PORT0_ATT_MASK + port);
+
+ DP(NETIF_MSG_HW, "attn_state %x\n", bp->attn_state);
+ bp->attn_state &= ~deasserted;
+ DP(NETIF_MSG_HW, "new state %x\n", bp->attn_state);
+}
+
+static void bnx2x_attn_int(struct bnx2x *bp)
+{
+ /* read local copy of bits */
+ u32 attn_bits = le32_to_cpu(bp->def_status_blk->atten_status_block.
+ attn_bits);
+ u32 attn_ack = le32_to_cpu(bp->def_status_blk->atten_status_block.
+ attn_bits_ack);
+ u32 attn_state = bp->attn_state;
+
+ /* look for changed bits */
+ u32 asserted = attn_bits & ~attn_ack & ~attn_state;
+ u32 deasserted = ~attn_bits & attn_ack & attn_state;
+
+ DP(NETIF_MSG_HW,
+ "attn_bits %x attn_ack %x asserted %x deasserted %x\n",
+ attn_bits, attn_ack, asserted, deasserted);
+
+ if (~(attn_bits ^ attn_ack) & (attn_bits ^ attn_state))
+ BNX2X_ERR("BAD attention state\n");
+
+ /* handle bits that were raised */
+ if (asserted)
+ bnx2x_attn_int_asserted(bp, asserted);
+
+ if (deasserted)
+ bnx2x_attn_int_deasserted(bp, deasserted);
+}
+
+void bnx2x_igu_ack_sb(struct bnx2x *bp, u8 igu_sb_id, u8 segment,
+ u16 index, u8 op, u8 update)
+{
+ u32 igu_addr = BAR_IGU_INTMEM + (IGU_CMD_INT_ACK_BASE + igu_sb_id)*8;
+
+ bnx2x_igu_ack_sb_gen(bp, igu_sb_id, segment, index, op, update,
+ igu_addr);
+}
+
+static inline void bnx2x_update_eq_prod(struct bnx2x *bp, u16 prod)
+{
+ /* No memory barriers */
+ storm_memset_eq_prod(bp, prod, BP_FUNC(bp));
+ mmiowb(); /* keep prod updates ordered */
+}
+
+#ifdef BCM_CNIC
+static int bnx2x_cnic_handle_cfc_del(struct bnx2x *bp, u32 cid,
+ union event_ring_elem *elem)
+{
+ u8 err = elem->message.error;
+
+ if (!bp->cnic_eth_dev.starting_cid ||
+ (cid < bp->cnic_eth_dev.starting_cid &&
+ cid != bp->cnic_eth_dev.iscsi_l2_cid))
+ return 1;
+
+ DP(BNX2X_MSG_SP, "got delete ramrod for CNIC CID %d\n", cid);
+
+ if (unlikely(err)) {
+
+ BNX2X_ERR("got delete ramrod for CNIC CID %d with error!\n",
+ cid);
+ bnx2x_panic_dump(bp);
+ }
+ bnx2x_cnic_cfc_comp(bp, cid, err);
+ return 0;
+}
+#endif
+
+static inline void bnx2x_handle_mcast_eqe(struct bnx2x *bp)
+{
+ struct bnx2x_mcast_ramrod_params rparam;
+ int rc;
+
+ memset(&rparam, 0, sizeof(rparam));
+
+ rparam.mcast_obj = &bp->mcast_obj;
+
+ netif_addr_lock_bh(bp->dev);
+
+ /* Clear pending state for the last command */
+ bp->mcast_obj.raw.clear_pending(&bp->mcast_obj.raw);
+
+ /* If there are pending mcast commands - send them */
+ if (bp->mcast_obj.check_pending(&bp->mcast_obj)) {
+ rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_CONT);
+ if (rc < 0)
+ BNX2X_ERR("Failed to send pending mcast commands: %d\n",
+ rc);
+ }
+
+ netif_addr_unlock_bh(bp->dev);
+}
+
+static inline void bnx2x_handle_classification_eqe(struct bnx2x *bp,
+ union event_ring_elem *elem)
+{
+ unsigned long ramrod_flags = 0;
+ int rc = 0;
+ u32 cid = elem->message.data.eth_event.echo & BNX2X_SWCID_MASK;
+ struct bnx2x_vlan_mac_obj *vlan_mac_obj;
+
+ /* Always push next commands out, don't wait here */
+ __set_bit(RAMROD_CONT, &ramrod_flags);
+
+ switch (elem->message.data.eth_event.echo >> BNX2X_SWCID_SHIFT) {
+ case BNX2X_FILTER_MAC_PENDING:
+#ifdef BCM_CNIC
+ if (cid == BNX2X_ISCSI_ETH_CID)
+ vlan_mac_obj = &bp->iscsi_l2_mac_obj;
+ else
+#endif
+ vlan_mac_obj = &bp->fp[cid].mac_obj;
+
+ break;
+ vlan_mac_obj = &bp->fp[cid].mac_obj;
+
+ case BNX2X_FILTER_MCAST_PENDING:
+ /* This is only relevant for 57710 where multicast MACs are
+ * configured as unicast MACs using the same ramrod.
+ */
+ bnx2x_handle_mcast_eqe(bp);
+ return;
+ default:
+ BNX2X_ERR("Unsupported classification command: %d\n",
+ elem->message.data.eth_event.echo);
+ return;
+ }
+
+ rc = vlan_mac_obj->complete(bp, vlan_mac_obj, elem, &ramrod_flags);
+
+ if (rc < 0)
+ BNX2X_ERR("Failed to schedule new commands: %d\n", rc);
+ else if (rc > 0)
+ DP(BNX2X_MSG_SP, "Scheduled next pending commands...\n");
+
+}
+
+#ifdef BCM_CNIC
+static void bnx2x_set_iscsi_eth_rx_mode(struct bnx2x *bp, bool start);
+#endif
+
+static inline void bnx2x_handle_rx_mode_eqe(struct bnx2x *bp)
+{
+ netif_addr_lock_bh(bp->dev);
+
+ clear_bit(BNX2X_FILTER_RX_MODE_PENDING, &bp->sp_state);
+
+ /* Send rx_mode command again if was requested */
+ if (test_and_clear_bit(BNX2X_FILTER_RX_MODE_SCHED, &bp->sp_state))
+ bnx2x_set_storm_rx_mode(bp);
+#ifdef BCM_CNIC
+ else if (test_and_clear_bit(BNX2X_FILTER_ISCSI_ETH_START_SCHED,
+ &bp->sp_state))
+ bnx2x_set_iscsi_eth_rx_mode(bp, true);
+ else if (test_and_clear_bit(BNX2X_FILTER_ISCSI_ETH_STOP_SCHED,
+ &bp->sp_state))
+ bnx2x_set_iscsi_eth_rx_mode(bp, false);
+#endif
+
+ netif_addr_unlock_bh(bp->dev);
+}
+
+static inline struct bnx2x_queue_sp_obj *bnx2x_cid_to_q_obj(
+ struct bnx2x *bp, u32 cid)
+{
+ DP(BNX2X_MSG_SP, "retrieving fp from cid %d\n", cid);
+#ifdef BCM_CNIC
+ if (cid == BNX2X_FCOE_ETH_CID)
+ return &bnx2x_fcoe(bp, q_obj);
+ else
+#endif
+ return &bnx2x_fp(bp, CID_TO_FP(cid), q_obj);
+}
+
+static void bnx2x_eq_int(struct bnx2x *bp)
+{
+ u16 hw_cons, sw_cons, sw_prod;
+ union event_ring_elem *elem;
+ u32 cid;
+ u8 opcode;
+ int spqe_cnt = 0;
+ struct bnx2x_queue_sp_obj *q_obj;
+ struct bnx2x_func_sp_obj *f_obj = &bp->func_obj;
+ struct bnx2x_raw_obj *rss_raw = &bp->rss_conf_obj.raw;
+
+ hw_cons = le16_to_cpu(*bp->eq_cons_sb);
+
+ /* The hw_cos range is 1-255, 257 - the sw_cons range is 0-254, 256.
+ * when we get the the next-page we nned to adjust so the loop
+ * condition below will be met. The next element is the size of a
+ * regular element and hence incrementing by 1
+ */
+ if ((hw_cons & EQ_DESC_MAX_PAGE) == EQ_DESC_MAX_PAGE)
+ hw_cons++;
+
+ /* This function may never run in parallel with itself for a
+ * specific bp, thus there is no need in "paired" read memory
+ * barrier here.
+ */
+ sw_cons = bp->eq_cons;
+ sw_prod = bp->eq_prod;
+
+ DP(BNX2X_MSG_SP, "EQ: hw_cons %u sw_cons %u bp->eq_spq_left %x\n",
+ hw_cons, sw_cons, atomic_read(&bp->eq_spq_left));
+
+ for (; sw_cons != hw_cons;
+ sw_prod = NEXT_EQ_IDX(sw_prod), sw_cons = NEXT_EQ_IDX(sw_cons)) {
+
+
+ elem = &bp->eq_ring[EQ_DESC(sw_cons)];
+
+ cid = SW_CID(elem->message.data.cfc_del_event.cid);
+ opcode = elem->message.opcode;
+
+
+ /* handle eq element */
+ switch (opcode) {
+ case EVENT_RING_OPCODE_STAT_QUERY:
+ DP(NETIF_MSG_TIMER, "got statistics comp event %d\n",
+ bp->stats_comp++);
+ /* nothing to do with stats comp */
+ goto next_spqe;
+
+ case EVENT_RING_OPCODE_CFC_DEL:
+ /* handle according to cid range */
+ /*
+ * we may want to verify here that the bp state is
+ * HALTING
+ */
+ DP(BNX2X_MSG_SP,
+ "got delete ramrod for MULTI[%d]\n", cid);
+#ifdef BCM_CNIC
+ if (!bnx2x_cnic_handle_cfc_del(bp, cid, elem))
+ goto next_spqe;
+#endif
+ q_obj = bnx2x_cid_to_q_obj(bp, cid);
+
+ if (q_obj->complete_cmd(bp, q_obj, BNX2X_Q_CMD_CFC_DEL))
+ break;
+
+
+
+ goto next_spqe;
+
+ case EVENT_RING_OPCODE_STOP_TRAFFIC:
+ DP(BNX2X_MSG_SP, "got STOP TRAFFIC\n");
+ if (f_obj->complete_cmd(bp, f_obj,
+ BNX2X_F_CMD_TX_STOP))
+ break;
+ bnx2x_dcbx_set_params(bp, BNX2X_DCBX_STATE_TX_PAUSED);
+ goto next_spqe;
+
+ case EVENT_RING_OPCODE_START_TRAFFIC:
+ DP(BNX2X_MSG_SP, "got START TRAFFIC\n");
+ if (f_obj->complete_cmd(bp, f_obj,
+ BNX2X_F_CMD_TX_START))
+ break;
+ bnx2x_dcbx_set_params(bp, BNX2X_DCBX_STATE_TX_RELEASED);
+ goto next_spqe;
+ case EVENT_RING_OPCODE_FUNCTION_START:
+ DP(BNX2X_MSG_SP, "got FUNC_START ramrod\n");
+ if (f_obj->complete_cmd(bp, f_obj, BNX2X_F_CMD_START))
+ break;
+
+ goto next_spqe;
+
+ case EVENT_RING_OPCODE_FUNCTION_STOP:
+ DP(BNX2X_MSG_SP, "got FUNC_STOP ramrod\n");
+ if (f_obj->complete_cmd(bp, f_obj, BNX2X_F_CMD_STOP))
+ break;
+
+ goto next_spqe;
+ }
+
+ switch (opcode | bp->state) {
+ case (EVENT_RING_OPCODE_RSS_UPDATE_RULES |
+ BNX2X_STATE_OPEN):
+ case (EVENT_RING_OPCODE_RSS_UPDATE_RULES |
+ BNX2X_STATE_OPENING_WAIT4_PORT):
+ cid = elem->message.data.eth_event.echo &
+ BNX2X_SWCID_MASK;
+ DP(BNX2X_MSG_SP, "got RSS_UPDATE ramrod. CID %d\n",
+ cid);
+ rss_raw->clear_pending(rss_raw);
+ break;
+
+ case (EVENT_RING_OPCODE_SET_MAC | BNX2X_STATE_OPEN):
+ case (EVENT_RING_OPCODE_SET_MAC | BNX2X_STATE_DIAG):
+ case (EVENT_RING_OPCODE_SET_MAC |
+ BNX2X_STATE_CLOSING_WAIT4_HALT):
+ case (EVENT_RING_OPCODE_CLASSIFICATION_RULES |
+ BNX2X_STATE_OPEN):
+ case (EVENT_RING_OPCODE_CLASSIFICATION_RULES |
+ BNX2X_STATE_DIAG):
+ case (EVENT_RING_OPCODE_CLASSIFICATION_RULES |
+ BNX2X_STATE_CLOSING_WAIT4_HALT):
+ DP(BNX2X_MSG_SP, "got (un)set mac ramrod\n");
+ bnx2x_handle_classification_eqe(bp, elem);
+ break;
+
+ case (EVENT_RING_OPCODE_MULTICAST_RULES |
+ BNX2X_STATE_OPEN):
+ case (EVENT_RING_OPCODE_MULTICAST_RULES |
+ BNX2X_STATE_DIAG):
+ case (EVENT_RING_OPCODE_MULTICAST_RULES |
+ BNX2X_STATE_CLOSING_WAIT4_HALT):
+ DP(BNX2X_MSG_SP, "got mcast ramrod\n");
+ bnx2x_handle_mcast_eqe(bp);
+ break;
+
+ case (EVENT_RING_OPCODE_FILTERS_RULES |
+ BNX2X_STATE_OPEN):
+ case (EVENT_RING_OPCODE_FILTERS_RULES |
+ BNX2X_STATE_DIAG):
+ case (EVENT_RING_OPCODE_FILTERS_RULES |
+ BNX2X_STATE_CLOSING_WAIT4_HALT):
+ DP(BNX2X_MSG_SP, "got rx_mode ramrod\n");
+ bnx2x_handle_rx_mode_eqe(bp);
+ break;
+ default:
+ /* unknown event log error and continue */
+ BNX2X_ERR("Unknown EQ event %d, bp->state 0x%x\n",
+ elem->message.opcode, bp->state);
+ }
+next_spqe:
+ spqe_cnt++;
+ } /* for */
+
+ smp_mb__before_atomic_inc();
+ atomic_add(spqe_cnt, &bp->eq_spq_left);
+
+ bp->eq_cons = sw_cons;
+ bp->eq_prod = sw_prod;
+ /* Make sure that above mem writes were issued towards the memory */
+ smp_wmb();
+
+ /* update producer */
+ bnx2x_update_eq_prod(bp, bp->eq_prod);
+}
+
+static void bnx2x_sp_task(struct work_struct *work)
+{
+ struct bnx2x *bp = container_of(work, struct bnx2x, sp_task.work);
+ u16 status;
+
+ status = bnx2x_update_dsb_idx(bp);
+/* if (status == 0) */
+/* BNX2X_ERR("spurious slowpath interrupt!\n"); */
+
+ DP(NETIF_MSG_INTR, "got a slowpath interrupt (status 0x%x)\n", status);
+
+ /* HW attentions */
+ if (status & BNX2X_DEF_SB_ATT_IDX) {
+ bnx2x_attn_int(bp);
+ status &= ~BNX2X_DEF_SB_ATT_IDX;
+ }
+
+ /* SP events: STAT_QUERY and others */
+ if (status & BNX2X_DEF_SB_IDX) {
+#ifdef BCM_CNIC
+ struct bnx2x_fastpath *fp = bnx2x_fcoe_fp(bp);
+
+ if ((!NO_FCOE(bp)) &&
+ (bnx2x_has_rx_work(fp) || bnx2x_has_tx_work(fp))) {
+ /*
+ * Prevent local bottom-halves from running as
+ * we are going to change the local NAPI list.
+ */
+ local_bh_disable();
+ napi_schedule(&bnx2x_fcoe(bp, napi));
+ local_bh_enable();
+ }
+#endif
+ /* Handle EQ completions */
+ bnx2x_eq_int(bp);
+
+ bnx2x_ack_sb(bp, bp->igu_dsb_id, USTORM_ID,
+ le16_to_cpu(bp->def_idx), IGU_INT_NOP, 1);
+
+ status &= ~BNX2X_DEF_SB_IDX;
+ }
+
+ if (unlikely(status))
+ DP(NETIF_MSG_INTR, "got an unknown interrupt! (status 0x%x)\n",
+ status);
+
+ bnx2x_ack_sb(bp, bp->igu_dsb_id, ATTENTION_ID,
+ le16_to_cpu(bp->def_att_idx), IGU_INT_ENABLE, 1);
+}
+
+irqreturn_t bnx2x_msix_sp_int(int irq, void *dev_instance)
+{
+ struct net_device *dev = dev_instance;
+ struct bnx2x *bp = netdev_priv(dev);
+
+ bnx2x_ack_sb(bp, bp->igu_dsb_id, USTORM_ID, 0,
+ IGU_INT_DISABLE, 0);
+
+#ifdef BNX2X_STOP_ON_ERROR
+ if (unlikely(bp->panic))
+ return IRQ_HANDLED;
+#endif
+
+#ifdef BCM_CNIC
+ {
+ struct cnic_ops *c_ops;
+
+ rcu_read_lock();
+ c_ops = rcu_dereference(bp->cnic_ops);
+ if (c_ops)
+ c_ops->cnic_handler(bp->cnic_data, NULL);
+ rcu_read_unlock();
+ }
+#endif
+ queue_delayed_work(bnx2x_wq, &bp->sp_task, 0);
+
+ return IRQ_HANDLED;
+}
+
+/* end of slow path */
+
+
+void bnx2x_drv_pulse(struct bnx2x *bp)
+{
+ SHMEM_WR(bp, func_mb[BP_FW_MB_IDX(bp)].drv_pulse_mb,
+ bp->fw_drv_pulse_wr_seq);
+}
+
+
+static void bnx2x_timer(unsigned long data)
+{
+ u8 cos;
+ struct bnx2x *bp = (struct bnx2x *) data;
+
+ if (!netif_running(bp->dev))
+ return;
+
+ if (poll) {
+ struct bnx2x_fastpath *fp = &bp->fp[0];
+
+ for_each_cos_in_tx_queue(fp, cos)
+ bnx2x_tx_int(bp, &fp->txdata[cos]);
+ bnx2x_rx_int(fp, 1000);
+ }
+
+ if (!BP_NOMCP(bp)) {
+ int mb_idx = BP_FW_MB_IDX(bp);
+ u32 drv_pulse;
+ u32 mcp_pulse;
+
+ ++bp->fw_drv_pulse_wr_seq;
+ bp->fw_drv_pulse_wr_seq &= DRV_PULSE_SEQ_MASK;
+ /* TBD - add SYSTEM_TIME */
+ drv_pulse = bp->fw_drv_pulse_wr_seq;
+ bnx2x_drv_pulse(bp);
+
+ mcp_pulse = (SHMEM_RD(bp, func_mb[mb_idx].mcp_pulse_mb) &
+ MCP_PULSE_SEQ_MASK);
+ /* The delta between driver pulse and mcp response
+ * should be 1 (before mcp response) or 0 (after mcp response)
+ */
+ if ((drv_pulse != mcp_pulse) &&
+ (drv_pulse != ((mcp_pulse + 1) & MCP_PULSE_SEQ_MASK))) {
+ /* someone lost a heartbeat... */
+ BNX2X_ERR("drv_pulse (0x%x) != mcp_pulse (0x%x)\n",
+ drv_pulse, mcp_pulse);
+ }
+ }
+
+ if (bp->state == BNX2X_STATE_OPEN)
+ bnx2x_stats_handle(bp, STATS_EVENT_UPDATE);
+
+ mod_timer(&bp->timer, jiffies + bp->current_interval);
+}
+
+/* end of Statistics */
+
+/* nic init */
+
+/*
+ * nic init service functions
+ */
+
+static inline void bnx2x_fill(struct bnx2x *bp, u32 addr, int fill, u32 len)
+{
+ u32 i;
+ if (!(len%4) && !(addr%4))
+ for (i = 0; i < len; i += 4)
+ REG_WR(bp, addr + i, fill);
+ else
+ for (i = 0; i < len; i++)
+ REG_WR8(bp, addr + i, fill);
+
+}
+
+/* helper: writes FP SP data to FW - data_size in dwords */
+static inline void bnx2x_wr_fp_sb_data(struct bnx2x *bp,
+ int fw_sb_id,
+ u32 *sb_data_p,
+ u32 data_size)
+{
+ int index;
+ for (index = 0; index < data_size; index++)
+ REG_WR(bp, BAR_CSTRORM_INTMEM +
+ CSTORM_STATUS_BLOCK_DATA_OFFSET(fw_sb_id) +
+ sizeof(u32)*index,
+ *(sb_data_p + index));
+}
+
+static inline void bnx2x_zero_fp_sb(struct bnx2x *bp, int fw_sb_id)
+{
+ u32 *sb_data_p;
+ u32 data_size = 0;
+ struct hc_status_block_data_e2 sb_data_e2;
+ struct hc_status_block_data_e1x sb_data_e1x;
+
+ /* disable the function first */
+ if (!CHIP_IS_E1x(bp)) {
+ memset(&sb_data_e2, 0, sizeof(struct hc_status_block_data_e2));
+ sb_data_e2.common.state = SB_DISABLED;
+ sb_data_e2.common.p_func.vf_valid = false;
+ sb_data_p = (u32 *)&sb_data_e2;
+ data_size = sizeof(struct hc_status_block_data_e2)/sizeof(u32);
+ } else {
+ memset(&sb_data_e1x, 0,
+ sizeof(struct hc_status_block_data_e1x));
+ sb_data_e1x.common.state = SB_DISABLED;
+ sb_data_e1x.common.p_func.vf_valid = false;
+ sb_data_p = (u32 *)&sb_data_e1x;
+ data_size = sizeof(struct hc_status_block_data_e1x)/sizeof(u32);
+ }
+ bnx2x_wr_fp_sb_data(bp, fw_sb_id, sb_data_p, data_size);
+
+ bnx2x_fill(bp, BAR_CSTRORM_INTMEM +
+ CSTORM_STATUS_BLOCK_OFFSET(fw_sb_id), 0,
+ CSTORM_STATUS_BLOCK_SIZE);
+ bnx2x_fill(bp, BAR_CSTRORM_INTMEM +
+ CSTORM_SYNC_BLOCK_OFFSET(fw_sb_id), 0,
+ CSTORM_SYNC_BLOCK_SIZE);
+}
+
+/* helper: writes SP SB data to FW */
+static inline void bnx2x_wr_sp_sb_data(struct bnx2x *bp,
+ struct hc_sp_status_block_data *sp_sb_data)
+{
+ int func = BP_FUNC(bp);
+ int i;
+ for (i = 0; i < sizeof(struct hc_sp_status_block_data)/sizeof(u32); i++)
+ REG_WR(bp, BAR_CSTRORM_INTMEM +
+ CSTORM_SP_STATUS_BLOCK_DATA_OFFSET(func) +
+ i*sizeof(u32),
+ *((u32 *)sp_sb_data + i));
+}
+
+static inline void bnx2x_zero_sp_sb(struct bnx2x *bp)
+{
+ int func = BP_FUNC(bp);
+ struct hc_sp_status_block_data sp_sb_data;
+ memset(&sp_sb_data, 0, sizeof(struct hc_sp_status_block_data));
+
+ sp_sb_data.state = SB_DISABLED;
+ sp_sb_data.p_func.vf_valid = false;
+
+ bnx2x_wr_sp_sb_data(bp, &sp_sb_data);
+
+ bnx2x_fill(bp, BAR_CSTRORM_INTMEM +
+ CSTORM_SP_STATUS_BLOCK_OFFSET(func), 0,
+ CSTORM_SP_STATUS_BLOCK_SIZE);
+ bnx2x_fill(bp, BAR_CSTRORM_INTMEM +
+ CSTORM_SP_SYNC_BLOCK_OFFSET(func), 0,
+ CSTORM_SP_SYNC_BLOCK_SIZE);
+
+}
+
+
+static inline
+void bnx2x_setup_ndsb_state_machine(struct hc_status_block_sm *hc_sm,
+ int igu_sb_id, int igu_seg_id)
+{
+ hc_sm->igu_sb_id = igu_sb_id;
+ hc_sm->igu_seg_id = igu_seg_id;
+ hc_sm->timer_value = 0xFF;
+ hc_sm->time_to_expire = 0xFFFFFFFF;
+}
+
+static void bnx2x_init_sb(struct bnx2x *bp, dma_addr_t mapping, int vfid,
+ u8 vf_valid, int fw_sb_id, int igu_sb_id)
+{
+ int igu_seg_id;
+
+ struct hc_status_block_data_e2 sb_data_e2;
+ struct hc_status_block_data_e1x sb_data_e1x;
+ struct hc_status_block_sm *hc_sm_p;
+ int data_size;
+ u32 *sb_data_p;
+
+ if (CHIP_INT_MODE_IS_BC(bp))
+ igu_seg_id = HC_SEG_ACCESS_NORM;
+ else
+ igu_seg_id = IGU_SEG_ACCESS_NORM;
+
+ bnx2x_zero_fp_sb(bp, fw_sb_id);
+
+ if (!CHIP_IS_E1x(bp)) {
+ memset(&sb_data_e2, 0, sizeof(struct hc_status_block_data_e2));
+ sb_data_e2.common.state = SB_ENABLED;
+ sb_data_e2.common.p_func.pf_id = BP_FUNC(bp);
+ sb_data_e2.common.p_func.vf_id = vfid;
+ sb_data_e2.common.p_func.vf_valid = vf_valid;
+ sb_data_e2.common.p_func.vnic_id = BP_VN(bp);
+ sb_data_e2.common.same_igu_sb_1b = true;
+ sb_data_e2.common.host_sb_addr.hi = U64_HI(mapping);
+ sb_data_e2.common.host_sb_addr.lo = U64_LO(mapping);
+ hc_sm_p = sb_data_e2.common.state_machine;
+ sb_data_p = (u32 *)&sb_data_e2;
+ data_size = sizeof(struct hc_status_block_data_e2)/sizeof(u32);
+ } else {
+ memset(&sb_data_e1x, 0,
+ sizeof(struct hc_status_block_data_e1x));
+ sb_data_e1x.common.state = SB_ENABLED;
+ sb_data_e1x.common.p_func.pf_id = BP_FUNC(bp);
+ sb_data_e1x.common.p_func.vf_id = 0xff;
+ sb_data_e1x.common.p_func.vf_valid = false;
+ sb_data_e1x.common.p_func.vnic_id = BP_VN(bp);
+ sb_data_e1x.common.same_igu_sb_1b = true;
+ sb_data_e1x.common.host_sb_addr.hi = U64_HI(mapping);
+ sb_data_e1x.common.host_sb_addr.lo = U64_LO(mapping);
+ hc_sm_p = sb_data_e1x.common.state_machine;
+ sb_data_p = (u32 *)&sb_data_e1x;
+ data_size = sizeof(struct hc_status_block_data_e1x)/sizeof(u32);
+ }
+
+ bnx2x_setup_ndsb_state_machine(&hc_sm_p[SM_RX_ID],
+ igu_sb_id, igu_seg_id);
+ bnx2x_setup_ndsb_state_machine(&hc_sm_p[SM_TX_ID],
+ igu_sb_id, igu_seg_id);
+
+ DP(NETIF_MSG_HW, "Init FW SB %d\n", fw_sb_id);
+
+ /* write indecies to HW */
+ bnx2x_wr_fp_sb_data(bp, fw_sb_id, sb_data_p, data_size);
+}
+
+static void bnx2x_update_coalesce_sb(struct bnx2x *bp, u8 fw_sb_id,
+ u16 tx_usec, u16 rx_usec)
+{
+ bnx2x_update_coalesce_sb_index(bp, fw_sb_id, HC_INDEX_ETH_RX_CQ_CONS,
+ false, rx_usec);
+ bnx2x_update_coalesce_sb_index(bp, fw_sb_id,
+ HC_INDEX_ETH_TX_CQ_CONS_COS0, false,
+ tx_usec);
+ bnx2x_update_coalesce_sb_index(bp, fw_sb_id,
+ HC_INDEX_ETH_TX_CQ_CONS_COS1, false,
+ tx_usec);
+ bnx2x_update_coalesce_sb_index(bp, fw_sb_id,
+ HC_INDEX_ETH_TX_CQ_CONS_COS2, false,
+ tx_usec);
+}
+
+static void bnx2x_init_def_sb(struct bnx2x *bp)
+{
+ struct host_sp_status_block *def_sb = bp->def_status_blk;
+ dma_addr_t mapping = bp->def_status_blk_mapping;
+ int igu_sp_sb_index;
+ int igu_seg_id;
+ int port = BP_PORT(bp);
+ int func = BP_FUNC(bp);
+ int reg_offset;
+ u64 section;
+ int index;
+ struct hc_sp_status_block_data sp_sb_data;
+ memset(&sp_sb_data, 0, sizeof(struct hc_sp_status_block_data));
+
+ if (CHIP_INT_MODE_IS_BC(bp)) {
+ igu_sp_sb_index = DEF_SB_IGU_ID;
+ igu_seg_id = HC_SEG_ACCESS_DEF;
+ } else {
+ igu_sp_sb_index = bp->igu_dsb_id;
+ igu_seg_id = IGU_SEG_ACCESS_DEF;
+ }
+
+ /* ATTN */
+ section = ((u64)mapping) + offsetof(struct host_sp_status_block,
+ atten_status_block);
+ def_sb->atten_status_block.status_block_id = igu_sp_sb_index;
+
+ bp->attn_state = 0;
+
+ reg_offset = (port ? MISC_REG_AEU_ENABLE1_FUNC_1_OUT_0 :
+ MISC_REG_AEU_ENABLE1_FUNC_0_OUT_0);
+ for (index = 0; index < MAX_DYNAMIC_ATTN_GRPS; index++) {
+ int sindex;
+ /* take care of sig[0]..sig[4] */
+ for (sindex = 0; sindex < 4; sindex++)
+ bp->attn_group[index].sig[sindex] =
+ REG_RD(bp, reg_offset + sindex*0x4 + 0x10*index);
+
+ if (!CHIP_IS_E1x(bp))
+ /*
+ * enable5 is separate from the rest of the registers,
+ * and therefore the address skip is 4
+ * and not 16 between the different groups
+ */
+ bp->attn_group[index].sig[4] = REG_RD(bp,
+ reg_offset + 0x10 + 0x4*index);
+ else
+ bp->attn_group[index].sig[4] = 0;
+ }
+
+ if (bp->common.int_block == INT_BLOCK_HC) {
+ reg_offset = (port ? HC_REG_ATTN_MSG1_ADDR_L :
+ HC_REG_ATTN_MSG0_ADDR_L);
+
+ REG_WR(bp, reg_offset, U64_LO(section));
+ REG_WR(bp, reg_offset + 4, U64_HI(section));
+ } else if (!CHIP_IS_E1x(bp)) {
+ REG_WR(bp, IGU_REG_ATTN_MSG_ADDR_L, U64_LO(section));
+ REG_WR(bp, IGU_REG_ATTN_MSG_ADDR_H, U64_HI(section));
+ }
+
+ section = ((u64)mapping) + offsetof(struct host_sp_status_block,
+ sp_sb);
+
+ bnx2x_zero_sp_sb(bp);
+
+ sp_sb_data.state = SB_ENABLED;
+ sp_sb_data.host_sb_addr.lo = U64_LO(section);
+ sp_sb_data.host_sb_addr.hi = U64_HI(section);
+ sp_sb_data.igu_sb_id = igu_sp_sb_index;
+ sp_sb_data.igu_seg_id = igu_seg_id;
+ sp_sb_data.p_func.pf_id = func;
+ sp_sb_data.p_func.vnic_id = BP_VN(bp);
+ sp_sb_data.p_func.vf_id = 0xff;
+
+ bnx2x_wr_sp_sb_data(bp, &sp_sb_data);
+
+ bnx2x_ack_sb(bp, bp->igu_dsb_id, USTORM_ID, 0, IGU_INT_ENABLE, 0);
+}
+
+void bnx2x_update_coalesce(struct bnx2x *bp)
+{
+ int i;
+
+ for_each_eth_queue(bp, i)
+ bnx2x_update_coalesce_sb(bp, bp->fp[i].fw_sb_id,
+ bp->tx_ticks, bp->rx_ticks);
+}
+
+static void bnx2x_init_sp_ring(struct bnx2x *bp)
+{
+ spin_lock_init(&bp->spq_lock);
+ atomic_set(&bp->cq_spq_left, MAX_SPQ_PENDING);
+
+ bp->spq_prod_idx = 0;
+ bp->dsb_sp_prod = BNX2X_SP_DSB_INDEX;
+ bp->spq_prod_bd = bp->spq;
+ bp->spq_last_bd = bp->spq_prod_bd + MAX_SP_DESC_CNT;
+}
+
+static void bnx2x_init_eq_ring(struct bnx2x *bp)
+{
+ int i;
+ for (i = 1; i <= NUM_EQ_PAGES; i++) {
+ union event_ring_elem *elem =
+ &bp->eq_ring[EQ_DESC_CNT_PAGE * i - 1];
+
+ elem->next_page.addr.hi =
+ cpu_to_le32(U64_HI(bp->eq_mapping +
+ BCM_PAGE_SIZE * (i % NUM_EQ_PAGES)));
+ elem->next_page.addr.lo =
+ cpu_to_le32(U64_LO(bp->eq_mapping +
+ BCM_PAGE_SIZE*(i % NUM_EQ_PAGES)));
+ }
+ bp->eq_cons = 0;
+ bp->eq_prod = NUM_EQ_DESC;
+ bp->eq_cons_sb = BNX2X_EQ_INDEX;
+ /* we want a warning message before it gets rought... */
+ atomic_set(&bp->eq_spq_left,
+ min_t(int, MAX_SP_DESC_CNT - MAX_SPQ_PENDING, NUM_EQ_DESC) - 1);
+}
+
+
+/* called with netif_addr_lock_bh() */
+void bnx2x_set_q_rx_mode(struct bnx2x *bp, u8 cl_id,
+ unsigned long rx_mode_flags,
+ unsigned long rx_accept_flags,
+ unsigned long tx_accept_flags,
+ unsigned long ramrod_flags)
+{
+ struct bnx2x_rx_mode_ramrod_params ramrod_param;
+ int rc;
+
+ memset(&ramrod_param, 0, sizeof(ramrod_param));
+
+ /* Prepare ramrod parameters */
+ ramrod_param.cid = 0;
+ ramrod_param.cl_id = cl_id;
+ ramrod_param.rx_mode_obj = &bp->rx_mode_obj;
+ ramrod_param.func_id = BP_FUNC(bp);
+
+ ramrod_param.pstate = &bp->sp_state;
+ ramrod_param.state = BNX2X_FILTER_RX_MODE_PENDING;
+
+ ramrod_param.rdata = bnx2x_sp(bp, rx_mode_rdata);
+ ramrod_param.rdata_mapping = bnx2x_sp_mapping(bp, rx_mode_rdata);
+
+ set_bit(BNX2X_FILTER_RX_MODE_PENDING, &bp->sp_state);
+
+ ramrod_param.ramrod_flags = ramrod_flags;
+ ramrod_param.rx_mode_flags = rx_mode_flags;
+
+ ramrod_param.rx_accept_flags = rx_accept_flags;
+ ramrod_param.tx_accept_flags = tx_accept_flags;
+
+ rc = bnx2x_config_rx_mode(bp, &ramrod_param);
+ if (rc < 0) {
+ BNX2X_ERR("Set rx_mode %d failed\n", bp->rx_mode);
+ return;
+ }
+}
+
+/* called with netif_addr_lock_bh() */
+void bnx2x_set_storm_rx_mode(struct bnx2x *bp)
+{
+ unsigned long rx_mode_flags = 0, ramrod_flags = 0;
+ unsigned long rx_accept_flags = 0, tx_accept_flags = 0;
+
+#ifdef BCM_CNIC
+ if (!NO_FCOE(bp))
+
+ /* Configure rx_mode of FCoE Queue */
+ __set_bit(BNX2X_RX_MODE_FCOE_ETH, &rx_mode_flags);
+#endif
+
+ switch (bp->rx_mode) {
+ case BNX2X_RX_MODE_NONE:
+ /*
+ * 'drop all' supersedes any accept flags that may have been
+ * passed to the function.
+ */
+ break;
+ case BNX2X_RX_MODE_NORMAL:
+ __set_bit(BNX2X_ACCEPT_UNICAST, &rx_accept_flags);
+ __set_bit(BNX2X_ACCEPT_MULTICAST, &rx_accept_flags);
+ __set_bit(BNX2X_ACCEPT_BROADCAST, &rx_accept_flags);
+
+ /* internal switching mode */
+ __set_bit(BNX2X_ACCEPT_UNICAST, &tx_accept_flags);
+ __set_bit(BNX2X_ACCEPT_MULTICAST, &tx_accept_flags);
+ __set_bit(BNX2X_ACCEPT_BROADCAST, &tx_accept_flags);
+
+ break;
+ case BNX2X_RX_MODE_ALLMULTI:
+ __set_bit(BNX2X_ACCEPT_UNICAST, &rx_accept_flags);
+ __set_bit(BNX2X_ACCEPT_ALL_MULTICAST, &rx_accept_flags);
+ __set_bit(BNX2X_ACCEPT_BROADCAST, &rx_accept_flags);
+
+ /* internal switching mode */
+ __set_bit(BNX2X_ACCEPT_UNICAST, &tx_accept_flags);
+ __set_bit(BNX2X_ACCEPT_ALL_MULTICAST, &tx_accept_flags);
+ __set_bit(BNX2X_ACCEPT_BROADCAST, &tx_accept_flags);
+
+ break;
+ case BNX2X_RX_MODE_PROMISC:
+ /* According to deffinition of SI mode, iface in promisc mode
+ * should receive matched and unmatched (in resolution of port)
+ * unicast packets.
+ */
+ __set_bit(BNX2X_ACCEPT_UNMATCHED, &rx_accept_flags);
+ __set_bit(BNX2X_ACCEPT_UNICAST, &rx_accept_flags);
+ __set_bit(BNX2X_ACCEPT_ALL_MULTICAST, &rx_accept_flags);
+ __set_bit(BNX2X_ACCEPT_BROADCAST, &rx_accept_flags);
+
+ /* internal switching mode */
+ __set_bit(BNX2X_ACCEPT_ALL_MULTICAST, &tx_accept_flags);
+ __set_bit(BNX2X_ACCEPT_BROADCAST, &tx_accept_flags);
+
+ if (IS_MF_SI(bp))
+ __set_bit(BNX2X_ACCEPT_ALL_UNICAST, &tx_accept_flags);
+ else
+ __set_bit(BNX2X_ACCEPT_UNICAST, &tx_accept_flags);
+
+ break;
+ default:
+ BNX2X_ERR("Unknown rx_mode: %d\n", bp->rx_mode);
+ return;
+ }
+
+ if (bp->rx_mode != BNX2X_RX_MODE_NONE) {
+ __set_bit(BNX2X_ACCEPT_ANY_VLAN, &rx_accept_flags);
+ __set_bit(BNX2X_ACCEPT_ANY_VLAN, &tx_accept_flags);
+ }
+
+ __set_bit(RAMROD_RX, &ramrod_flags);
+ __set_bit(RAMROD_TX, &ramrod_flags);
+
+ bnx2x_set_q_rx_mode(bp, bp->fp->cl_id, rx_mode_flags, rx_accept_flags,
+ tx_accept_flags, ramrod_flags);
+}
+
+static void bnx2x_init_internal_common(struct bnx2x *bp)
+{
+ int i;
+
+ if (IS_MF_SI(bp))
+ /*
+ * In switch independent mode, the TSTORM needs to accept
+ * packets that failed classification, since approximate match
+ * mac addresses aren't written to NIG LLH
+ */
+ REG_WR8(bp, BAR_TSTRORM_INTMEM +
+ TSTORM_ACCEPT_CLASSIFY_FAILED_OFFSET, 2);
+ else if (!CHIP_IS_E1(bp)) /* 57710 doesn't support MF */
+ REG_WR8(bp, BAR_TSTRORM_INTMEM +
+ TSTORM_ACCEPT_CLASSIFY_FAILED_OFFSET, 0);
+
+ /* Zero this manually as its initialization is
+ currently missing in the initTool */
+ for (i = 0; i < (USTORM_AGG_DATA_SIZE >> 2); i++)
+ REG_WR(bp, BAR_USTRORM_INTMEM +
+ USTORM_AGG_DATA_OFFSET + i * 4, 0);
+ if (!CHIP_IS_E1x(bp)) {
+ REG_WR8(bp, BAR_CSTRORM_INTMEM + CSTORM_IGU_MODE_OFFSET,
+ CHIP_INT_MODE_IS_BC(bp) ?
+ HC_IGU_BC_MODE : HC_IGU_NBC_MODE);
+ }
+}
+
+static void bnx2x_init_internal(struct bnx2x *bp, u32 load_code)
+{
+ switch (load_code) {
+ case FW_MSG_CODE_DRV_LOAD_COMMON:
+ case FW_MSG_CODE_DRV_LOAD_COMMON_CHIP:
+ bnx2x_init_internal_common(bp);
+ /* no break */
+
+ case FW_MSG_CODE_DRV_LOAD_PORT:
+ /* nothing to do */
+ /* no break */
+
+ case FW_MSG_CODE_DRV_LOAD_FUNCTION:
+ /* internal memory per function is
+ initialized inside bnx2x_pf_init */
+ break;
+
+ default:
+ BNX2X_ERR("Unknown load_code (0x%x) from MCP\n", load_code);
+ break;
+ }
+}
+
+static inline u8 bnx2x_fp_igu_sb_id(struct bnx2x_fastpath *fp)
+{
+ return fp->bp->igu_base_sb + fp->index + CNIC_PRESENT;
+}
+
+static inline u8 bnx2x_fp_fw_sb_id(struct bnx2x_fastpath *fp)
+{
+ return fp->bp->base_fw_ndsb + fp->index + CNIC_PRESENT;
+}
+
+static inline u8 bnx2x_fp_cl_id(struct bnx2x_fastpath *fp)
+{
+ if (CHIP_IS_E1x(fp->bp))
+ return BP_L_ID(fp->bp) + fp->index;
+ else /* We want Client ID to be the same as IGU SB ID for 57712 */
+ return bnx2x_fp_igu_sb_id(fp);
+}
+
+static void bnx2x_init_eth_fp(struct bnx2x *bp, int fp_idx)
+{
+ struct bnx2x_fastpath *fp = &bp->fp[fp_idx];
+ u8 cos;
+ unsigned long q_type = 0;
+ u32 cids[BNX2X_MULTI_TX_COS] = { 0 };
+
+ fp->cid = fp_idx;
+ fp->cl_id = bnx2x_fp_cl_id(fp);
+ fp->fw_sb_id = bnx2x_fp_fw_sb_id(fp);
+ fp->igu_sb_id = bnx2x_fp_igu_sb_id(fp);
+ /* qZone id equals to FW (per path) client id */
+ fp->cl_qzone_id = bnx2x_fp_qzone_id(fp);
+
+ /* init shortcut */
+ fp->ustorm_rx_prods_offset = bnx2x_rx_ustorm_prods_offset(fp);
+ /* Setup SB indicies */
+ fp->rx_cons_sb = BNX2X_RX_SB_INDEX;
+
+ /* Configure Queue State object */
+ __set_bit(BNX2X_Q_TYPE_HAS_RX, &q_type);
+ __set_bit(BNX2X_Q_TYPE_HAS_TX, &q_type);
+
+ BUG_ON(fp->max_cos > BNX2X_MULTI_TX_COS);
+
+ /* init tx data */
+ for_each_cos_in_tx_queue(fp, cos) {
+ bnx2x_init_txdata(bp, &fp->txdata[cos],
+ CID_COS_TO_TX_ONLY_CID(fp->cid, cos),
+ FP_COS_TO_TXQ(fp, cos),
+ BNX2X_TX_SB_INDEX_BASE + cos);
+ cids[cos] = fp->txdata[cos].cid;
+ }
+
+ bnx2x_init_queue_obj(bp, &fp->q_obj, fp->cl_id, cids, fp->max_cos,
+ BP_FUNC(bp), bnx2x_sp(bp, q_rdata),
+ bnx2x_sp_mapping(bp, q_rdata), q_type);
+
+ /**
+ * Configure classification DBs: Always enable Tx switching
+ */
+ bnx2x_init_vlan_mac_fp_objs(fp, BNX2X_OBJ_TYPE_RX_TX);
+
+ DP(NETIF_MSG_IFUP, "queue[%d]: bnx2x_init_sb(%p,%p) "
+ "cl_id %d fw_sb %d igu_sb %d\n",
+ fp_idx, bp, fp->status_blk.e2_sb, fp->cl_id, fp->fw_sb_id,
+ fp->igu_sb_id);
+ bnx2x_init_sb(bp, fp->status_blk_mapping, BNX2X_VF_ID_INVALID, false,
+ fp->fw_sb_id, fp->igu_sb_id);
+
+ bnx2x_update_fpsb_idx(fp);
+}
+
+void bnx2x_nic_init(struct bnx2x *bp, u32 load_code)
+{
+ int i;
+
+ for_each_eth_queue(bp, i)
+ bnx2x_init_eth_fp(bp, i);
+#ifdef BCM_CNIC
+ if (!NO_FCOE(bp))
+ bnx2x_init_fcoe_fp(bp);
+
+ bnx2x_init_sb(bp, bp->cnic_sb_mapping,
+ BNX2X_VF_ID_INVALID, false,
+ bnx2x_cnic_fw_sb_id(bp), bnx2x_cnic_igu_sb_id(bp));
+
+#endif
+
+ /* Initialize MOD_ABS interrupts */
+ bnx2x_init_mod_abs_int(bp, &bp->link_vars, bp->common.chip_id,
+ bp->common.shmem_base, bp->common.shmem2_base,
+ BP_PORT(bp));
+ /* ensure status block indices were read */
+ rmb();
+
+ bnx2x_init_def_sb(bp);
+ bnx2x_update_dsb_idx(bp);
+ bnx2x_init_rx_rings(bp);
+ bnx2x_init_tx_rings(bp);
+ bnx2x_init_sp_ring(bp);
+ bnx2x_init_eq_ring(bp);
+ bnx2x_init_internal(bp, load_code);
+ bnx2x_pf_init(bp);
+ bnx2x_stats_init(bp);
+
+ /* flush all before enabling interrupts */
+ mb();
+ mmiowb();
+
+ bnx2x_int_enable(bp);
+
+ /* Check for SPIO5 */
+ bnx2x_attn_int_deasserted0(bp,
+ REG_RD(bp, MISC_REG_AEU_AFTER_INVERT_1_FUNC_0 + BP_PORT(bp)*4) &
+ AEU_INPUTS_ATTN_BITS_SPIO5);
+}
+
+/* end of nic init */
+
+/*
+ * gzip service functions
+ */
+
+static int bnx2x_gunzip_init(struct bnx2x *bp)
+{
+ bp->gunzip_buf = dma_alloc_coherent(&bp->pdev->dev, FW_BUF_SIZE,
+ &bp->gunzip_mapping, GFP_KERNEL);
+ if (bp->gunzip_buf == NULL)
+ goto gunzip_nomem1;
+
+ bp->strm = kmalloc(sizeof(*bp->strm), GFP_KERNEL);
+ if (bp->strm == NULL)
+ goto gunzip_nomem2;
+
+ bp->strm->workspace = vmalloc(zlib_inflate_workspacesize());
+ if (bp->strm->workspace == NULL)
+ goto gunzip_nomem3;
+
+ return 0;
+
+gunzip_nomem3:
+ kfree(bp->strm);
+ bp->strm = NULL;
+
+gunzip_nomem2:
+ dma_free_coherent(&bp->pdev->dev, FW_BUF_SIZE, bp->gunzip_buf,
+ bp->gunzip_mapping);
+ bp->gunzip_buf = NULL;
+
+gunzip_nomem1:
+ netdev_err(bp->dev, "Cannot allocate firmware buffer for"
+ " un-compression\n");
+ return -ENOMEM;
+}
+
+static void bnx2x_gunzip_end(struct bnx2x *bp)
+{
+ if (bp->strm) {
+ vfree(bp->strm->workspace);
+ kfree(bp->strm);
+ bp->strm = NULL;
+ }
+
+ if (bp->gunzip_buf) {
+ dma_free_coherent(&bp->pdev->dev, FW_BUF_SIZE, bp->gunzip_buf,
+ bp->gunzip_mapping);
+ bp->gunzip_buf = NULL;
+ }
+}
+
+static int bnx2x_gunzip(struct bnx2x *bp, const u8 *zbuf, int len)
+{
+ int n, rc;
+
+ /* check gzip header */
+ if ((zbuf[0] != 0x1f) || (zbuf[1] != 0x8b) || (zbuf[2] != Z_DEFLATED)) {
+ BNX2X_ERR("Bad gzip header\n");
+ return -EINVAL;
+ }
+
+ n = 10;
+
+#define FNAME 0x8
+
+ if (zbuf[3] & FNAME)
+ while ((zbuf[n++] != 0) && (n < len));
+
+ bp->strm->next_in = (typeof(bp->strm->next_in))zbuf + n;
+ bp->strm->avail_in = len - n;
+ bp->strm->next_out = bp->gunzip_buf;
+ bp->strm->avail_out = FW_BUF_SIZE;
+
+ rc = zlib_inflateInit2(bp->strm, -MAX_WBITS);
+ if (rc != Z_OK)
+ return rc;
+
+ rc = zlib_inflate(bp->strm, Z_FINISH);
+ if ((rc != Z_OK) && (rc != Z_STREAM_END))
+ netdev_err(bp->dev, "Firmware decompression error: %s\n",
+ bp->strm->msg);
+
+ bp->gunzip_outlen = (FW_BUF_SIZE - bp->strm->avail_out);
+ if (bp->gunzip_outlen & 0x3)
+ netdev_err(bp->dev, "Firmware decompression error:"
+ " gunzip_outlen (%d) not aligned\n",
+ bp->gunzip_outlen);
+ bp->gunzip_outlen >>= 2;
+
+ zlib_inflateEnd(bp->strm);
+
+ if (rc == Z_STREAM_END)
+ return 0;
+
+ return rc;
+}
+
+/* nic load/unload */
+
+/*
+ * General service functions
+ */
+
+/* send a NIG loopback debug packet */
+static void bnx2x_lb_pckt(struct bnx2x *bp)
+{
+ u32 wb_write[3];
+
+ /* Ethernet source and destination addresses */
+ wb_write[0] = 0x55555555;
+ wb_write[1] = 0x55555555;
+ wb_write[2] = 0x20; /* SOP */
+ REG_WR_DMAE(bp, NIG_REG_DEBUG_PACKET_LB, wb_write, 3);
+
+ /* NON-IP protocol */
+ wb_write[0] = 0x09000000;
+ wb_write[1] = 0x55555555;
+ wb_write[2] = 0x10; /* EOP, eop_bvalid = 0 */
+ REG_WR_DMAE(bp, NIG_REG_DEBUG_PACKET_LB, wb_write, 3);
+}
+
+/* some of the internal memories
+ * are not directly readable from the driver
+ * to test them we send debug packets
+ */
+static int bnx2x_int_mem_test(struct bnx2x *bp)
+{
+ int factor;
+ int count, i;
+ u32 val = 0;
+
+ if (CHIP_REV_IS_FPGA(bp))
+ factor = 120;
+ else if (CHIP_REV_IS_EMUL(bp))
+ factor = 200;
+ else
+ factor = 1;
+
+ /* Disable inputs of parser neighbor blocks */
+ REG_WR(bp, TSDM_REG_ENABLE_IN1, 0x0);
+ REG_WR(bp, TCM_REG_PRS_IFEN, 0x0);
+ REG_WR(bp, CFC_REG_DEBUG0, 0x1);
+ REG_WR(bp, NIG_REG_PRS_REQ_IN_EN, 0x0);
+
+ /* Write 0 to parser credits for CFC search request */
+ REG_WR(bp, PRS_REG_CFC_SEARCH_INITIAL_CREDIT, 0x0);
+
+ /* send Ethernet packet */
+ bnx2x_lb_pckt(bp);
+
+ /* TODO do i reset NIG statistic? */
+ /* Wait until NIG register shows 1 packet of size 0x10 */
+ count = 1000 * factor;
+ while (count) {
+
+ bnx2x_read_dmae(bp, NIG_REG_STAT2_BRB_OCTET, 2);
+ val = *bnx2x_sp(bp, wb_data[0]);
+ if (val == 0x10)
+ break;
+
+ msleep(10);
+ count--;
+ }
+ if (val != 0x10) {
+ BNX2X_ERR("NIG timeout val = 0x%x\n", val);
+ return -1;
+ }
+
+ /* Wait until PRS register shows 1 packet */
+ count = 1000 * factor;
+ while (count) {
+ val = REG_RD(bp, PRS_REG_NUM_OF_PACKETS);
+ if (val == 1)
+ break;
+
+ msleep(10);
+ count--;
+ }
+ if (val != 0x1) {
+ BNX2X_ERR("PRS timeout val = 0x%x\n", val);
+ return -2;
+ }
+
+ /* Reset and init BRB, PRS */
+ REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_1_CLEAR, 0x03);
+ msleep(50);
+ REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_1_SET, 0x03);
+ msleep(50);
+ bnx2x_init_block(bp, BLOCK_BRB1, PHASE_COMMON);
+ bnx2x_init_block(bp, BLOCK_PRS, PHASE_COMMON);
+
+ DP(NETIF_MSG_HW, "part2\n");
+
+ /* Disable inputs of parser neighbor blocks */
+ REG_WR(bp, TSDM_REG_ENABLE_IN1, 0x0);
+ REG_WR(bp, TCM_REG_PRS_IFEN, 0x0);
+ REG_WR(bp, CFC_REG_DEBUG0, 0x1);
+ REG_WR(bp, NIG_REG_PRS_REQ_IN_EN, 0x0);
+
+ /* Write 0 to parser credits for CFC search request */
+ REG_WR(bp, PRS_REG_CFC_SEARCH_INITIAL_CREDIT, 0x0);
+
+ /* send 10 Ethernet packets */
+ for (i = 0; i < 10; i++)
+ bnx2x_lb_pckt(bp);
+
+ /* Wait until NIG register shows 10 + 1
+ packets of size 11*0x10 = 0xb0 */
+ count = 1000 * factor;
+ while (count) {
+
+ bnx2x_read_dmae(bp, NIG_REG_STAT2_BRB_OCTET, 2);
+ val = *bnx2x_sp(bp, wb_data[0]);
+ if (val == 0xb0)
+ break;
+
+ msleep(10);
+ count--;
+ }
+ if (val != 0xb0) {
+ BNX2X_ERR("NIG timeout val = 0x%x\n", val);
+ return -3;
+ }
+
+ /* Wait until PRS register shows 2 packets */
+ val = REG_RD(bp, PRS_REG_NUM_OF_PACKETS);
+ if (val != 2)
+ BNX2X_ERR("PRS timeout val = 0x%x\n", val);
+
+ /* Write 1 to parser credits for CFC search request */
+ REG_WR(bp, PRS_REG_CFC_SEARCH_INITIAL_CREDIT, 0x1);
+
+ /* Wait until PRS register shows 3 packets */
+ msleep(10 * factor);
+ /* Wait until NIG register shows 1 packet of size 0x10 */
+ val = REG_RD(bp, PRS_REG_NUM_OF_PACKETS);
+ if (val != 3)
+ BNX2X_ERR("PRS timeout val = 0x%x\n", val);
+
+ /* clear NIG EOP FIFO */
+ for (i = 0; i < 11; i++)
+ REG_RD(bp, NIG_REG_INGRESS_EOP_LB_FIFO);
+ val = REG_RD(bp, NIG_REG_INGRESS_EOP_LB_EMPTY);
+ if (val != 1) {
+ BNX2X_ERR("clear of NIG failed\n");
+ return -4;
+ }
+
+ /* Reset and init BRB, PRS, NIG */
+ REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_1_CLEAR, 0x03);
+ msleep(50);
+ REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_1_SET, 0x03);
+ msleep(50);
+ bnx2x_init_block(bp, BLOCK_BRB1, PHASE_COMMON);
+ bnx2x_init_block(bp, BLOCK_PRS, PHASE_COMMON);
+#ifndef BCM_CNIC
+ /* set NIC mode */
+ REG_WR(bp, PRS_REG_NIC_MODE, 1);
+#endif
+
+ /* Enable inputs of parser neighbor blocks */
+ REG_WR(bp, TSDM_REG_ENABLE_IN1, 0x7fffffff);
+ REG_WR(bp, TCM_REG_PRS_IFEN, 0x1);
+ REG_WR(bp, CFC_REG_DEBUG0, 0x0);
+ REG_WR(bp, NIG_REG_PRS_REQ_IN_EN, 0x1);
+
+ DP(NETIF_MSG_HW, "done\n");
+
+ return 0; /* OK */
+}
+
+static void bnx2x_enable_blocks_attention(struct bnx2x *bp)
+{
+ REG_WR(bp, PXP_REG_PXP_INT_MASK_0, 0);
+ if (!CHIP_IS_E1x(bp))
+ REG_WR(bp, PXP_REG_PXP_INT_MASK_1, 0x40);
+ else
+ REG_WR(bp, PXP_REG_PXP_INT_MASK_1, 0);
+ REG_WR(bp, DORQ_REG_DORQ_INT_MASK, 0);
+ REG_WR(bp, CFC_REG_CFC_INT_MASK, 0);
+ /*
+ * mask read length error interrupts in brb for parser
+ * (parsing unit and 'checksum and crc' unit)
+ * these errors are legal (PU reads fixed length and CAC can cause
+ * read length error on truncated packets)
+ */
+ REG_WR(bp, BRB1_REG_BRB1_INT_MASK, 0xFC00);
+ REG_WR(bp, QM_REG_QM_INT_MASK, 0);
+ REG_WR(bp, TM_REG_TM_INT_MASK, 0);
+ REG_WR(bp, XSDM_REG_XSDM_INT_MASK_0, 0);
+ REG_WR(bp, XSDM_REG_XSDM_INT_MASK_1, 0);
+ REG_WR(bp, XCM_REG_XCM_INT_MASK, 0);
+/* REG_WR(bp, XSEM_REG_XSEM_INT_MASK_0, 0); */
+/* REG_WR(bp, XSEM_REG_XSEM_INT_MASK_1, 0); */
+ REG_WR(bp, USDM_REG_USDM_INT_MASK_0, 0);
+ REG_WR(bp, USDM_REG_USDM_INT_MASK_1, 0);
+ REG_WR(bp, UCM_REG_UCM_INT_MASK, 0);
+/* REG_WR(bp, USEM_REG_USEM_INT_MASK_0, 0); */
+/* REG_WR(bp, USEM_REG_USEM_INT_MASK_1, 0); */
+ REG_WR(bp, GRCBASE_UPB + PB_REG_PB_INT_MASK, 0);
+ REG_WR(bp, CSDM_REG_CSDM_INT_MASK_0, 0);
+ REG_WR(bp, CSDM_REG_CSDM_INT_MASK_1, 0);
+ REG_WR(bp, CCM_REG_CCM_INT_MASK, 0);
+/* REG_WR(bp, CSEM_REG_CSEM_INT_MASK_0, 0); */
+/* REG_WR(bp, CSEM_REG_CSEM_INT_MASK_1, 0); */
+
+ if (CHIP_REV_IS_FPGA(bp))
+ REG_WR(bp, PXP2_REG_PXP2_INT_MASK_0, 0x580000);
+ else if (!CHIP_IS_E1x(bp))
+ REG_WR(bp, PXP2_REG_PXP2_INT_MASK_0,
+ (PXP2_PXP2_INT_MASK_0_REG_PGL_CPL_OF
+ | PXP2_PXP2_INT_MASK_0_REG_PGL_CPL_AFT
+ | PXP2_PXP2_INT_MASK_0_REG_PGL_PCIE_ATTN
+ | PXP2_PXP2_INT_MASK_0_REG_PGL_READ_BLOCKED
+ | PXP2_PXP2_INT_MASK_0_REG_PGL_WRITE_BLOCKED));
+ else
+ REG_WR(bp, PXP2_REG_PXP2_INT_MASK_0, 0x480000);
+ REG_WR(bp, TSDM_REG_TSDM_INT_MASK_0, 0);
+ REG_WR(bp, TSDM_REG_TSDM_INT_MASK_1, 0);
+ REG_WR(bp, TCM_REG_TCM_INT_MASK, 0);
+/* REG_WR(bp, TSEM_REG_TSEM_INT_MASK_0, 0); */
+
+ if (!CHIP_IS_E1x(bp))
+ /* enable VFC attentions: bits 11 and 12, bits 31:13 reserved */
+ REG_WR(bp, TSEM_REG_TSEM_INT_MASK_1, 0x07ff);
+
+ REG_WR(bp, CDU_REG_CDU_INT_MASK, 0);
+ REG_WR(bp, DMAE_REG_DMAE_INT_MASK, 0);
+/* REG_WR(bp, MISC_REG_MISC_INT_MASK, 0); */
+ REG_WR(bp, PBF_REG_PBF_INT_MASK, 0x18); /* bit 3,4 masked */
+}
+
+static void bnx2x_reset_common(struct bnx2x *bp)
+{
+ u32 val = 0x1400;
+
+ /* reset_common */
+ REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_1_CLEAR,
+ 0xd3ffff7f);
+
+ if (CHIP_IS_E3(bp)) {
+ val |= MISC_REGISTERS_RESET_REG_2_MSTAT0;
+ val |= MISC_REGISTERS_RESET_REG_2_MSTAT1;
+ }
+
+ REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_2_CLEAR, val);
+}
+
+static void bnx2x_setup_dmae(struct bnx2x *bp)
+{
+ bp->dmae_ready = 0;
+ spin_lock_init(&bp->dmae_lock);
+}
+
+static void bnx2x_init_pxp(struct bnx2x *bp)
+{
+ u16 devctl;
+ int r_order, w_order;
+
+ pci_read_config_word(bp->pdev,
+ pci_pcie_cap(bp->pdev) + PCI_EXP_DEVCTL, &devctl);
+ DP(NETIF_MSG_HW, "read 0x%x from devctl\n", devctl);
+ w_order = ((devctl & PCI_EXP_DEVCTL_PAYLOAD) >> 5);
+ if (bp->mrrs == -1)
+ r_order = ((devctl & PCI_EXP_DEVCTL_READRQ) >> 12);
+ else {
+ DP(NETIF_MSG_HW, "force read order to %d\n", bp->mrrs);
+ r_order = bp->mrrs;
+ }
+
+ bnx2x_init_pxp_arb(bp, r_order, w_order);
+}
+
+static void bnx2x_setup_fan_failure_detection(struct bnx2x *bp)
+{
+ int is_required;
+ u32 val;
+ int port;
+
+ if (BP_NOMCP(bp))
+ return;
+
+ is_required = 0;
+ val = SHMEM_RD(bp, dev_info.shared_hw_config.config2) &
+ SHARED_HW_CFG_FAN_FAILURE_MASK;
+
+ if (val == SHARED_HW_CFG_FAN_FAILURE_ENABLED)
+ is_required = 1;
+
+ /*
+ * The fan failure mechanism is usually related to the PHY type since
+ * the power consumption of the board is affected by the PHY. Currently,
+ * fan is required for most designs with SFX7101, BCM8727 and BCM8481.
+ */
+ else if (val == SHARED_HW_CFG_FAN_FAILURE_PHY_TYPE)
+ for (port = PORT_0; port < PORT_MAX; port++) {
+ is_required |=
+ bnx2x_fan_failure_det_req(
+ bp,
+ bp->common.shmem_base,
+ bp->common.shmem2_base,
+ port);
+ }
+
+ DP(NETIF_MSG_HW, "fan detection setting: %d\n", is_required);
+
+ if (is_required == 0)
+ return;
+
+ /* Fan failure is indicated by SPIO 5 */
+ bnx2x_set_spio(bp, MISC_REGISTERS_SPIO_5,
+ MISC_REGISTERS_SPIO_INPUT_HI_Z);
+
+ /* set to active low mode */
+ val = REG_RD(bp, MISC_REG_SPIO_INT);
+ val |= ((1 << MISC_REGISTERS_SPIO_5) <<
+ MISC_REGISTERS_SPIO_INT_OLD_SET_POS);
+ REG_WR(bp, MISC_REG_SPIO_INT, val);
+
+ /* enable interrupt to signal the IGU */
+ val = REG_RD(bp, MISC_REG_SPIO_EVENT_EN);
+ val |= (1 << MISC_REGISTERS_SPIO_5);
+ REG_WR(bp, MISC_REG_SPIO_EVENT_EN, val);
+}
+
+static void bnx2x_pretend_func(struct bnx2x *bp, u8 pretend_func_num)
+{
+ u32 offset = 0;
+
+ if (CHIP_IS_E1(bp))
+ return;
+ if (CHIP_IS_E1H(bp) && (pretend_func_num >= E1H_FUNC_MAX))
+ return;
+
+ switch (BP_ABS_FUNC(bp)) {
+ case 0:
+ offset = PXP2_REG_PGL_PRETEND_FUNC_F0;
+ break;
+ case 1:
+ offset = PXP2_REG_PGL_PRETEND_FUNC_F1;
+ break;
+ case 2:
+ offset = PXP2_REG_PGL_PRETEND_FUNC_F2;
+ break;
+ case 3:
+ offset = PXP2_REG_PGL_PRETEND_FUNC_F3;
+ break;
+ case 4:
+ offset = PXP2_REG_PGL_PRETEND_FUNC_F4;
+ break;
+ case 5:
+ offset = PXP2_REG_PGL_PRETEND_FUNC_F5;
+ break;
+ case 6:
+ offset = PXP2_REG_PGL_PRETEND_FUNC_F6;
+ break;
+ case 7:
+ offset = PXP2_REG_PGL_PRETEND_FUNC_F7;
+ break;
+ default:
+ return;
+ }
+
+ REG_WR(bp, offset, pretend_func_num);
+ REG_RD(bp, offset);
+ DP(NETIF_MSG_HW, "Pretending to func %d\n", pretend_func_num);
+}
+
+void bnx2x_pf_disable(struct bnx2x *bp)
+{
+ u32 val = REG_RD(bp, IGU_REG_PF_CONFIGURATION);
+ val &= ~IGU_PF_CONF_FUNC_EN;
+
+ REG_WR(bp, IGU_REG_PF_CONFIGURATION, val);
+ REG_WR(bp, PGLUE_B_REG_INTERNAL_PFID_ENABLE_MASTER, 0);
+ REG_WR(bp, CFC_REG_WEAK_ENABLE_PF, 0);
+}
+
+static inline void bnx2x__common_init_phy(struct bnx2x *bp)
+{
+ u32 shmem_base[2], shmem2_base[2];
+ shmem_base[0] = bp->common.shmem_base;
+ shmem2_base[0] = bp->common.shmem2_base;
+ if (!CHIP_IS_E1x(bp)) {
+ shmem_base[1] =
+ SHMEM2_RD(bp, other_shmem_base_addr);
+ shmem2_base[1] =
+ SHMEM2_RD(bp, other_shmem2_base_addr);
+ }
+ bnx2x_acquire_phy_lock(bp);
+ bnx2x_common_init_phy(bp, shmem_base, shmem2_base,
+ bp->common.chip_id);
+ bnx2x_release_phy_lock(bp);
+}
+
+/**
+ * bnx2x_init_hw_common - initialize the HW at the COMMON phase.
+ *
+ * @bp: driver handle
+ */
+static int bnx2x_init_hw_common(struct bnx2x *bp)
+{
+ u32 val;
+
+ DP(BNX2X_MSG_MCP, "starting common init func %d\n", BP_ABS_FUNC(bp));
+
++ /*
++ * take the UNDI lock to protect undi_unload flow from accessing
++ * registers while we're resetting the chip
++ */
++ bnx2x_acquire_hw_lock(bp, HW_LOCK_RESOURCE_UNDI);
++
+ bnx2x_reset_common(bp);
+ REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_1_SET, 0xffffffff);
+
+ val = 0xfffc;
+ if (CHIP_IS_E3(bp)) {
+ val |= MISC_REGISTERS_RESET_REG_2_MSTAT0;
+ val |= MISC_REGISTERS_RESET_REG_2_MSTAT1;
+ }
+ REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_2_SET, val);
+
++ bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_UNDI);
++
+ bnx2x_init_block(bp, BLOCK_MISC, PHASE_COMMON);
+
+ if (!CHIP_IS_E1x(bp)) {
+ u8 abs_func_id;
+
+ /**
+ * 4-port mode or 2-port mode we need to turn of master-enable
+ * for everyone, after that, turn it back on for self.
+ * so, we disregard multi-function or not, and always disable
+ * for all functions on the given path, this means 0,2,4,6 for
+ * path 0 and 1,3,5,7 for path 1
+ */
+ for (abs_func_id = BP_PATH(bp);
+ abs_func_id < E2_FUNC_MAX*2; abs_func_id += 2) {
+ if (abs_func_id == BP_ABS_FUNC(bp)) {
+ REG_WR(bp,
+ PGLUE_B_REG_INTERNAL_PFID_ENABLE_MASTER,
+ 1);
+ continue;
+ }
+
+ bnx2x_pretend_func(bp, abs_func_id);
+ /* clear pf enable */
+ bnx2x_pf_disable(bp);
+ bnx2x_pretend_func(bp, BP_ABS_FUNC(bp));
+ }
+ }
+
+ bnx2x_init_block(bp, BLOCK_PXP, PHASE_COMMON);
+ if (CHIP_IS_E1(bp)) {
+ /* enable HW interrupt from PXP on USDM overflow
+ bit 16 on INT_MASK_0 */
+ REG_WR(bp, PXP_REG_PXP_INT_MASK_0, 0);
+ }
+
+ bnx2x_init_block(bp, BLOCK_PXP2, PHASE_COMMON);
+ bnx2x_init_pxp(bp);
+
+#ifdef __BIG_ENDIAN
+ REG_WR(bp, PXP2_REG_RQ_QM_ENDIAN_M, 1);
+ REG_WR(bp, PXP2_REG_RQ_TM_ENDIAN_M, 1);
+ REG_WR(bp, PXP2_REG_RQ_SRC_ENDIAN_M, 1);
+ REG_WR(bp, PXP2_REG_RQ_CDU_ENDIAN_M, 1);
+ REG_WR(bp, PXP2_REG_RQ_DBG_ENDIAN_M, 1);
+ /* make sure this value is 0 */
+ REG_WR(bp, PXP2_REG_RQ_HC_ENDIAN_M, 0);
+
+/* REG_WR(bp, PXP2_REG_RD_PBF_SWAP_MODE, 1); */
+ REG_WR(bp, PXP2_REG_RD_QM_SWAP_MODE, 1);
+ REG_WR(bp, PXP2_REG_RD_TM_SWAP_MODE, 1);
+ REG_WR(bp, PXP2_REG_RD_SRC_SWAP_MODE, 1);
+ REG_WR(bp, PXP2_REG_RD_CDURD_SWAP_MODE, 1);
+#endif
+
+ bnx2x_ilt_init_page_size(bp, INITOP_SET);
+
+ if (CHIP_REV_IS_FPGA(bp) && CHIP_IS_E1H(bp))
+ REG_WR(bp, PXP2_REG_PGL_TAGS_LIMIT, 0x1);
+
+ /* let the HW do it's magic ... */
+ msleep(100);
+ /* finish PXP init */
+ val = REG_RD(bp, PXP2_REG_RQ_CFG_DONE);
+ if (val != 1) {
+ BNX2X_ERR("PXP2 CFG failed\n");
+ return -EBUSY;
+ }
+ val = REG_RD(bp, PXP2_REG_RD_INIT_DONE);
+ if (val != 1) {
+ BNX2X_ERR("PXP2 RD_INIT failed\n");
+ return -EBUSY;
+ }
+
+ /* Timers bug workaround E2 only. We need to set the entire ILT to
+ * have entries with value "0" and valid bit on.
+ * This needs to be done by the first PF that is loaded in a path
+ * (i.e. common phase)
+ */
+ if (!CHIP_IS_E1x(bp)) {
+/* In E2 there is a bug in the timers block that can cause function 6 / 7
+ * (i.e. vnic3) to start even if it is marked as "scan-off".
+ * This occurs when a different function (func2,3) is being marked
+ * as "scan-off". Real-life scenario for example: if a driver is being
+ * load-unloaded while func6,7 are down. This will cause the timer to access
+ * the ilt, translate to a logical address and send a request to read/write.
+ * Since the ilt for the function that is down is not valid, this will cause
+ * a translation error which is unrecoverable.
+ * The Workaround is intended to make sure that when this happens nothing fatal
+ * will occur. The workaround:
+ * 1. First PF driver which loads on a path will:
+ * a. After taking the chip out of reset, by using pretend,
+ * it will write "0" to the following registers of
+ * the other vnics.
+ * REG_WR(pdev, PGLUE_B_REG_INTERNAL_PFID_ENABLE_MASTER, 0);
+ * REG_WR(pdev, CFC_REG_WEAK_ENABLE_PF,0);
+ * REG_WR(pdev, CFC_REG_STRONG_ENABLE_PF,0);
+ * And for itself it will write '1' to
+ * PGLUE_B_REG_INTERNAL_PFID_ENABLE_MASTER to enable
+ * dmae-operations (writing to pram for example.)
+ * note: can be done for only function 6,7 but cleaner this
+ * way.
+ * b. Write zero+valid to the entire ILT.
+ * c. Init the first_timers_ilt_entry, last_timers_ilt_entry of
+ * VNIC3 (of that port). The range allocated will be the
+ * entire ILT. This is needed to prevent ILT range error.
+ * 2. Any PF driver load flow:
+ * a. ILT update with the physical addresses of the allocated
+ * logical pages.
+ * b. Wait 20msec. - note that this timeout is needed to make
+ * sure there are no requests in one of the PXP internal
+ * queues with "old" ILT addresses.
+ * c. PF enable in the PGLC.
+ * d. Clear the was_error of the PF in the PGLC. (could have
+ * occured while driver was down)
+ * e. PF enable in the CFC (WEAK + STRONG)
+ * f. Timers scan enable
+ * 3. PF driver unload flow:
+ * a. Clear the Timers scan_en.
+ * b. Polling for scan_on=0 for that PF.
+ * c. Clear the PF enable bit in the PXP.
+ * d. Clear the PF enable in the CFC (WEAK + STRONG)
+ * e. Write zero+valid to all ILT entries (The valid bit must
+ * stay set)
+ * f. If this is VNIC 3 of a port then also init
+ * first_timers_ilt_entry to zero and last_timers_ilt_entry
+ * to the last enrty in the ILT.
+ *
+ * Notes:
+ * Currently the PF error in the PGLC is non recoverable.
+ * In the future the there will be a recovery routine for this error.
+ * Currently attention is masked.
+ * Having an MCP lock on the load/unload process does not guarantee that
+ * there is no Timer disable during Func6/7 enable. This is because the
+ * Timers scan is currently being cleared by the MCP on FLR.
+ * Step 2.d can be done only for PF6/7 and the driver can also check if
+ * there is error before clearing it. But the flow above is simpler and
+ * more general.
+ * All ILT entries are written by zero+valid and not just PF6/7
+ * ILT entries since in the future the ILT entries allocation for
+ * PF-s might be dynamic.
+ */
+ struct ilt_client_info ilt_cli;
+ struct bnx2x_ilt ilt;
+ memset(&ilt_cli, 0, sizeof(struct ilt_client_info));
+ memset(&ilt, 0, sizeof(struct bnx2x_ilt));
+
+ /* initialize dummy TM client */
+ ilt_cli.start = 0;
+ ilt_cli.end = ILT_NUM_PAGE_ENTRIES - 1;
+ ilt_cli.client_num = ILT_CLIENT_TM;
+
+ /* Step 1: set zeroes to all ilt page entries with valid bit on
+ * Step 2: set the timers first/last ilt entry to point
+ * to the entire range to prevent ILT range error for 3rd/4th
+ * vnic (this code assumes existance of the vnic)
+ *
+ * both steps performed by call to bnx2x_ilt_client_init_op()
+ * with dummy TM client
+ *
+ * we must use pretend since PXP2_REG_RQ_##blk##_FIRST_ILT
+ * and his brother are split registers
+ */
+ bnx2x_pretend_func(bp, (BP_PATH(bp) + 6));
+ bnx2x_ilt_client_init_op_ilt(bp, &ilt, &ilt_cli, INITOP_CLEAR);
+ bnx2x_pretend_func(bp, BP_ABS_FUNC(bp));
+
+ REG_WR(bp, PXP2_REG_RQ_DRAM_ALIGN, BNX2X_PXP_DRAM_ALIGN);
+ REG_WR(bp, PXP2_REG_RQ_DRAM_ALIGN_RD, BNX2X_PXP_DRAM_ALIGN);
+ REG_WR(bp, PXP2_REG_RQ_DRAM_ALIGN_SEL, 1);
+ }
+
+
+ REG_WR(bp, PXP2_REG_RQ_DISABLE_INPUTS, 0);
+ REG_WR(bp, PXP2_REG_RD_DISABLE_INPUTS, 0);
+
+ if (!CHIP_IS_E1x(bp)) {
+ int factor = CHIP_REV_IS_EMUL(bp) ? 1000 :
+ (CHIP_REV_IS_FPGA(bp) ? 400 : 0);
+ bnx2x_init_block(bp, BLOCK_PGLUE_B, PHASE_COMMON);
+
+ bnx2x_init_block(bp, BLOCK_ATC, PHASE_COMMON);
+
+ /* let the HW do it's magic ... */
+ do {
+ msleep(200);
+ val = REG_RD(bp, ATC_REG_ATC_INIT_DONE);
+ } while (factor-- && (val != 1));
+
+ if (val != 1) {
+ BNX2X_ERR("ATC_INIT failed\n");
+ return -EBUSY;
+ }
+ }
+
+ bnx2x_init_block(bp, BLOCK_DMAE, PHASE_COMMON);
+
+ /* clean the DMAE memory */
+ bp->dmae_ready = 1;
+ bnx2x_init_fill(bp, TSEM_REG_PRAM, 0, 8, 1);
+
+ bnx2x_init_block(bp, BLOCK_TCM, PHASE_COMMON);
+
+ bnx2x_init_block(bp, BLOCK_UCM, PHASE_COMMON);
+
+ bnx2x_init_block(bp, BLOCK_CCM, PHASE_COMMON);
+
+ bnx2x_init_block(bp, BLOCK_XCM, PHASE_COMMON);
+
+ bnx2x_read_dmae(bp, XSEM_REG_PASSIVE_BUFFER, 3);
+ bnx2x_read_dmae(bp, CSEM_REG_PASSIVE_BUFFER, 3);
+ bnx2x_read_dmae(bp, TSEM_REG_PASSIVE_BUFFER, 3);
+ bnx2x_read_dmae(bp, USEM_REG_PASSIVE_BUFFER, 3);
+
+ bnx2x_init_block(bp, BLOCK_QM, PHASE_COMMON);
+
+
+ /* QM queues pointers table */
+ bnx2x_qm_init_ptr_table(bp, bp->qm_cid_count, INITOP_SET);
+
+ /* soft reset pulse */
+ REG_WR(bp, QM_REG_SOFT_RESET, 1);
+ REG_WR(bp, QM_REG_SOFT_RESET, 0);
+
+#ifdef BCM_CNIC
+ bnx2x_init_block(bp, BLOCK_TM, PHASE_COMMON);
+#endif
+
+ bnx2x_init_block(bp, BLOCK_DORQ, PHASE_COMMON);
+ REG_WR(bp, DORQ_REG_DPM_CID_OFST, BNX2X_DB_SHIFT);
+ if (!CHIP_REV_IS_SLOW(bp))
+ /* enable hw interrupt from doorbell Q */
+ REG_WR(bp, DORQ_REG_DORQ_INT_MASK, 0);
+
+ bnx2x_init_block(bp, BLOCK_BRB1, PHASE_COMMON);
+
+ bnx2x_init_block(bp, BLOCK_PRS, PHASE_COMMON);
+ REG_WR(bp, PRS_REG_A_PRSU_20, 0xf);
+
+ if (!CHIP_IS_E1(bp))
+ REG_WR(bp, PRS_REG_E1HOV_MODE, bp->path_has_ovlan);
+
+ if (!CHIP_IS_E1x(bp) && !CHIP_IS_E3B0(bp))
+ /* Bit-map indicating which L2 hdrs may appear
+ * after the basic Ethernet header
+ */
+ REG_WR(bp, PRS_REG_HDRS_AFTER_BASIC,
+ bp->path_has_ovlan ? 7 : 6);
+
+ bnx2x_init_block(bp, BLOCK_TSDM, PHASE_COMMON);
+ bnx2x_init_block(bp, BLOCK_CSDM, PHASE_COMMON);
+ bnx2x_init_block(bp, BLOCK_USDM, PHASE_COMMON);
+ bnx2x_init_block(bp, BLOCK_XSDM, PHASE_COMMON);
+
+ if (!CHIP_IS_E1x(bp)) {
+ /* reset VFC memories */
+ REG_WR(bp, TSEM_REG_FAST_MEMORY + VFC_REG_MEMORIES_RST,
+ VFC_MEMORIES_RST_REG_CAM_RST |
+ VFC_MEMORIES_RST_REG_RAM_RST);
+ REG_WR(bp, XSEM_REG_FAST_MEMORY + VFC_REG_MEMORIES_RST,
+ VFC_MEMORIES_RST_REG_CAM_RST |
+ VFC_MEMORIES_RST_REG_RAM_RST);
+
+ msleep(20);
+ }
+
+ bnx2x_init_block(bp, BLOCK_TSEM, PHASE_COMMON);
+ bnx2x_init_block(bp, BLOCK_USEM, PHASE_COMMON);
+ bnx2x_init_block(bp, BLOCK_CSEM, PHASE_COMMON);
+ bnx2x_init_block(bp, BLOCK_XSEM, PHASE_COMMON);
+
+ /* sync semi rtc */
+ REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_1_CLEAR,
+ 0x80000000);
+ REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_1_SET,
+ 0x80000000);
+
+ bnx2x_init_block(bp, BLOCK_UPB, PHASE_COMMON);
+ bnx2x_init_block(bp, BLOCK_XPB, PHASE_COMMON);
+ bnx2x_init_block(bp, BLOCK_PBF, PHASE_COMMON);
+
+ if (!CHIP_IS_E1x(bp))
+ REG_WR(bp, PBF_REG_HDRS_AFTER_BASIC,
+ bp->path_has_ovlan ? 7 : 6);
+
+ REG_WR(bp, SRC_REG_SOFT_RST, 1);
+
+ bnx2x_init_block(bp, BLOCK_SRC, PHASE_COMMON);
+
+#ifdef BCM_CNIC
+ REG_WR(bp, SRC_REG_KEYSEARCH_0, 0x63285672);
+ REG_WR(bp, SRC_REG_KEYSEARCH_1, 0x24b8f2cc);
+ REG_WR(bp, SRC_REG_KEYSEARCH_2, 0x223aef9b);
+ REG_WR(bp, SRC_REG_KEYSEARCH_3, 0x26001e3a);
+ REG_WR(bp, SRC_REG_KEYSEARCH_4, 0x7ae91116);
+ REG_WR(bp, SRC_REG_KEYSEARCH_5, 0x5ce5230b);
+ REG_WR(bp, SRC_REG_KEYSEARCH_6, 0x298d8adf);
+ REG_WR(bp, SRC_REG_KEYSEARCH_7, 0x6eb0ff09);
+ REG_WR(bp, SRC_REG_KEYSEARCH_8, 0x1830f82f);
+ REG_WR(bp, SRC_REG_KEYSEARCH_9, 0x01e46be7);
+#endif
+ REG_WR(bp, SRC_REG_SOFT_RST, 0);
+
+ if (sizeof(union cdu_context) != 1024)
+ /* we currently assume that a context is 1024 bytes */
+ dev_alert(&bp->pdev->dev, "please adjust the size "
+ "of cdu_context(%ld)\n",
+ (long)sizeof(union cdu_context));
+
+ bnx2x_init_block(bp, BLOCK_CDU, PHASE_COMMON);
+ val = (4 << 24) + (0 << 12) + 1024;
+ REG_WR(bp, CDU_REG_CDU_GLOBAL_PARAMS, val);
+
+ bnx2x_init_block(bp, BLOCK_CFC, PHASE_COMMON);
+ REG_WR(bp, CFC_REG_INIT_REG, 0x7FF);
+ /* enable context validation interrupt from CFC */
+ REG_WR(bp, CFC_REG_CFC_INT_MASK, 0);
+
+ /* set the thresholds to prevent CFC/CDU race */
+ REG_WR(bp, CFC_REG_DEBUG0, 0x20020000);
+
+ bnx2x_init_block(bp, BLOCK_HC, PHASE_COMMON);
+
+ if (!CHIP_IS_E1x(bp) && BP_NOMCP(bp))
+ REG_WR(bp, IGU_REG_RESET_MEMORIES, 0x36);
+
+ bnx2x_init_block(bp, BLOCK_IGU, PHASE_COMMON);
+ bnx2x_init_block(bp, BLOCK_MISC_AEU, PHASE_COMMON);
+
+ /* Reset PCIE errors for debug */
+ REG_WR(bp, 0x2814, 0xffffffff);
+ REG_WR(bp, 0x3820, 0xffffffff);
+
+ if (!CHIP_IS_E1x(bp)) {
+ REG_WR(bp, PCICFG_OFFSET + PXPCS_TL_CONTROL_5,
+ (PXPCS_TL_CONTROL_5_ERR_UNSPPORT1 |
+ PXPCS_TL_CONTROL_5_ERR_UNSPPORT));
+ REG_WR(bp, PCICFG_OFFSET + PXPCS_TL_FUNC345_STAT,
+ (PXPCS_TL_FUNC345_STAT_ERR_UNSPPORT4 |
+ PXPCS_TL_FUNC345_STAT_ERR_UNSPPORT3 |
+ PXPCS_TL_FUNC345_STAT_ERR_UNSPPORT2));
+ REG_WR(bp, PCICFG_OFFSET + PXPCS_TL_FUNC678_STAT,
+ (PXPCS_TL_FUNC678_STAT_ERR_UNSPPORT7 |
+ PXPCS_TL_FUNC678_STAT_ERR_UNSPPORT6 |
+ PXPCS_TL_FUNC678_STAT_ERR_UNSPPORT5));
+ }
+
+ bnx2x_init_block(bp, BLOCK_NIG, PHASE_COMMON);
+ if (!CHIP_IS_E1(bp)) {
+ /* in E3 this done in per-port section */
+ if (!CHIP_IS_E3(bp))
+ REG_WR(bp, NIG_REG_LLH_MF_MODE, IS_MF(bp));
+ }
+ if (CHIP_IS_E1H(bp))
+ /* not applicable for E2 (and above ...) */
+ REG_WR(bp, NIG_REG_LLH_E1HOV_MODE, IS_MF_SD(bp));
+
+ if (CHIP_REV_IS_SLOW(bp))
+ msleep(200);
+
+ /* finish CFC init */
+ val = reg_poll(bp, CFC_REG_LL_INIT_DONE, 1, 100, 10);
+ if (val != 1) {
+ BNX2X_ERR("CFC LL_INIT failed\n");
+ return -EBUSY;
+ }
+ val = reg_poll(bp, CFC_REG_AC_INIT_DONE, 1, 100, 10);
+ if (val != 1) {
+ BNX2X_ERR("CFC AC_INIT failed\n");
+ return -EBUSY;
+ }
+ val = reg_poll(bp, CFC_REG_CAM_INIT_DONE, 1, 100, 10);
+ if (val != 1) {
+ BNX2X_ERR("CFC CAM_INIT failed\n");
+ return -EBUSY;
+ }
+ REG_WR(bp, CFC_REG_DEBUG0, 0);
+
+ if (CHIP_IS_E1(bp)) {
+ /* read NIG statistic
+ to see if this is our first up since powerup */
+ bnx2x_read_dmae(bp, NIG_REG_STAT2_BRB_OCTET, 2);
+ val = *bnx2x_sp(bp, wb_data[0]);
+
+ /* do internal memory self test */
+ if ((val == 0) && bnx2x_int_mem_test(bp)) {
+ BNX2X_ERR("internal mem self test failed\n");
+ return -EBUSY;
+ }
+ }
+
+ bnx2x_setup_fan_failure_detection(bp);
+
+ /* clear PXP2 attentions */
+ REG_RD(bp, PXP2_REG_PXP2_INT_STS_CLR_0);
+
+ bnx2x_enable_blocks_attention(bp);
+ bnx2x_enable_blocks_parity(bp);
+
+ if (!BP_NOMCP(bp)) {
+ if (CHIP_IS_E1x(bp))
+ bnx2x__common_init_phy(bp);
+ } else
+ BNX2X_ERR("Bootcode is missing - can not initialize link\n");
+
+ return 0;
+}
+
+/**
+ * bnx2x_init_hw_common_chip - init HW at the COMMON_CHIP phase.
+ *
+ * @bp: driver handle
+ */
+static int bnx2x_init_hw_common_chip(struct bnx2x *bp)
+{
+ int rc = bnx2x_init_hw_common(bp);
+
+ if (rc)
+ return rc;
+
+ /* In E2 2-PORT mode, same ext phy is used for the two paths */
+ if (!BP_NOMCP(bp))
+ bnx2x__common_init_phy(bp);
+
+ return 0;
+}
+
+static int bnx2x_init_hw_port(struct bnx2x *bp)
+{
+ int port = BP_PORT(bp);
+ int init_phase = port ? PHASE_PORT1 : PHASE_PORT0;
+ u32 low, high;
+ u32 val;
+
+ bnx2x__link_reset(bp);
+
+ DP(BNX2X_MSG_MCP, "starting port init port %d\n", port);
+
+ REG_WR(bp, NIG_REG_MASK_INTERRUPT_PORT0 + port*4, 0);
+
+ bnx2x_init_block(bp, BLOCK_MISC, init_phase);
+ bnx2x_init_block(bp, BLOCK_PXP, init_phase);
+ bnx2x_init_block(bp, BLOCK_PXP2, init_phase);
+
+ /* Timers bug workaround: disables the pf_master bit in pglue at
+ * common phase, we need to enable it here before any dmae access are
+ * attempted. Therefore we manually added the enable-master to the
+ * port phase (it also happens in the function phase)
+ */
+ if (!CHIP_IS_E1x(bp))
+ REG_WR(bp, PGLUE_B_REG_INTERNAL_PFID_ENABLE_MASTER, 1);
+
+ bnx2x_init_block(bp, BLOCK_ATC, init_phase);
+ bnx2x_init_block(bp, BLOCK_DMAE, init_phase);
+ bnx2x_init_block(bp, BLOCK_PGLUE_B, init_phase);
+ bnx2x_init_block(bp, BLOCK_QM, init_phase);
+
+ bnx2x_init_block(bp, BLOCK_TCM, init_phase);
+ bnx2x_init_block(bp, BLOCK_UCM, init_phase);
+ bnx2x_init_block(bp, BLOCK_CCM, init_phase);
+ bnx2x_init_block(bp, BLOCK_XCM, init_phase);
+
+ /* QM cid (connection) count */
+ bnx2x_qm_init_cid_count(bp, bp->qm_cid_count, INITOP_SET);
+
+#ifdef BCM_CNIC
+ bnx2x_init_block(bp, BLOCK_TM, init_phase);
+ REG_WR(bp, TM_REG_LIN0_SCAN_TIME + port*4, 20);
+ REG_WR(bp, TM_REG_LIN0_MAX_ACTIVE_CID + port*4, 31);
+#endif
+
+ bnx2x_init_block(bp, BLOCK_DORQ, init_phase);
+
+ if (CHIP_IS_E1(bp) || CHIP_IS_E1H(bp)) {
+ bnx2x_init_block(bp, BLOCK_BRB1, init_phase);
+
+ if (IS_MF(bp))
+ low = ((bp->flags & ONE_PORT_FLAG) ? 160 : 246);
+ else if (bp->dev->mtu > 4096) {
+ if (bp->flags & ONE_PORT_FLAG)
+ low = 160;
+ else {
+ val = bp->dev->mtu;
+ /* (24*1024 + val*4)/256 */
+ low = 96 + (val/64) +
+ ((val % 64) ? 1 : 0);
+ }
+ } else
+ low = ((bp->flags & ONE_PORT_FLAG) ? 80 : 160);
+ high = low + 56; /* 14*1024/256 */
+ REG_WR(bp, BRB1_REG_PAUSE_LOW_THRESHOLD_0 + port*4, low);
+ REG_WR(bp, BRB1_REG_PAUSE_HIGH_THRESHOLD_0 + port*4, high);
+ }
+
+ if (CHIP_MODE_IS_4_PORT(bp))
+ REG_WR(bp, (BP_PORT(bp) ?
+ BRB1_REG_MAC_GUARANTIED_1 :
+ BRB1_REG_MAC_GUARANTIED_0), 40);
+
+
+ bnx2x_init_block(bp, BLOCK_PRS, init_phase);
+ if (CHIP_IS_E3B0(bp))
+ /* Ovlan exists only if we are in multi-function +
+ * switch-dependent mode, in switch-independent there
+ * is no ovlan headers
+ */
+ REG_WR(bp, BP_PORT(bp) ?
+ PRS_REG_HDRS_AFTER_BASIC_PORT_1 :
+ PRS_REG_HDRS_AFTER_BASIC_PORT_0,
+ (bp->path_has_ovlan ? 7 : 6));
+
+ bnx2x_init_block(bp, BLOCK_TSDM, init_phase);
+ bnx2x_init_block(bp, BLOCK_CSDM, init_phase);
+ bnx2x_init_block(bp, BLOCK_USDM, init_phase);
+ bnx2x_init_block(bp, BLOCK_XSDM, init_phase);
+
+ bnx2x_init_block(bp, BLOCK_TSEM, init_phase);
+ bnx2x_init_block(bp, BLOCK_USEM, init_phase);
+ bnx2x_init_block(bp, BLOCK_CSEM, init_phase);
+ bnx2x_init_block(bp, BLOCK_XSEM, init_phase);
+
+ bnx2x_init_block(bp, BLOCK_UPB, init_phase);
+ bnx2x_init_block(bp, BLOCK_XPB, init_phase);
+
+ bnx2x_init_block(bp, BLOCK_PBF, init_phase);
+
+ if (CHIP_IS_E1x(bp)) {
+ /* configure PBF to work without PAUSE mtu 9000 */
+ REG_WR(bp, PBF_REG_P0_PAUSE_ENABLE + port*4, 0);
+
+ /* update threshold */
+ REG_WR(bp, PBF_REG_P0_ARB_THRSH + port*4, (9040/16));
+ /* update init credit */
+ REG_WR(bp, PBF_REG_P0_INIT_CRD + port*4, (9040/16) + 553 - 22);
+
+ /* probe changes */
+ REG_WR(bp, PBF_REG_INIT_P0 + port*4, 1);
+ udelay(50);
+ REG_WR(bp, PBF_REG_INIT_P0 + port*4, 0);
+ }
+
+#ifdef BCM_CNIC
+ bnx2x_init_block(bp, BLOCK_SRC, init_phase);
+#endif
+ bnx2x_init_block(bp, BLOCK_CDU, init_phase);
+ bnx2x_init_block(bp, BLOCK_CFC, init_phase);
+
+ if (CHIP_IS_E1(bp)) {
+ REG_WR(bp, HC_REG_LEADING_EDGE_0 + port*8, 0);
+ REG_WR(bp, HC_REG_TRAILING_EDGE_0 + port*8, 0);
+ }
+ bnx2x_init_block(bp, BLOCK_HC, init_phase);
+
+ bnx2x_init_block(bp, BLOCK_IGU, init_phase);
+
+ bnx2x_init_block(bp, BLOCK_MISC_AEU, init_phase);
+ /* init aeu_mask_attn_func_0/1:
+ * - SF mode: bits 3-7 are masked. only bits 0-2 are in use
+ * - MF mode: bit 3 is masked. bits 0-2 are in use as in SF
+ * bits 4-7 are used for "per vn group attention" */
+ val = IS_MF(bp) ? 0xF7 : 0x7;
+ /* Enable DCBX attention for all but E1 */
+ val |= CHIP_IS_E1(bp) ? 0 : 0x10;
+ REG_WR(bp, MISC_REG_AEU_MASK_ATTN_FUNC_0 + port*4, val);
+
+ bnx2x_init_block(bp, BLOCK_NIG, init_phase);
+
+ if (!CHIP_IS_E1x(bp)) {
+ /* Bit-map indicating which L2 hdrs may appear after the
+ * basic Ethernet header
+ */
+ REG_WR(bp, BP_PORT(bp) ?
+ NIG_REG_P1_HDRS_AFTER_BASIC :
+ NIG_REG_P0_HDRS_AFTER_BASIC,
+ IS_MF_SD(bp) ? 7 : 6);
+
+ if (CHIP_IS_E3(bp))
+ REG_WR(bp, BP_PORT(bp) ?
+ NIG_REG_LLH1_MF_MODE :
+ NIG_REG_LLH_MF_MODE, IS_MF(bp));
+ }
+ if (!CHIP_IS_E3(bp))
+ REG_WR(bp, NIG_REG_XGXS_SERDES0_MODE_SEL + port*4, 1);
+
+ if (!CHIP_IS_E1(bp)) {
+ /* 0x2 disable mf_ov, 0x1 enable */
+ REG_WR(bp, NIG_REG_LLH0_BRB1_DRV_MASK_MF + port*4,
+ (IS_MF_SD(bp) ? 0x1 : 0x2));
+
+ if (!CHIP_IS_E1x(bp)) {
+ val = 0;
+ switch (bp->mf_mode) {
+ case MULTI_FUNCTION_SD:
+ val = 1;
+ break;
+ case MULTI_FUNCTION_SI:
+ val = 2;
+ break;
+ }
+
+ REG_WR(bp, (BP_PORT(bp) ? NIG_REG_LLH1_CLS_TYPE :
+ NIG_REG_LLH0_CLS_TYPE), val);
+ }
+ {
+ REG_WR(bp, NIG_REG_LLFC_ENABLE_0 + port*4, 0);
+ REG_WR(bp, NIG_REG_LLFC_OUT_EN_0 + port*4, 0);
+ REG_WR(bp, NIG_REG_PAUSE_ENABLE_0 + port*4, 1);
+ }
+ }
+
+
+ /* If SPIO5 is set to generate interrupts, enable it for this port */
+ val = REG_RD(bp, MISC_REG_SPIO_EVENT_EN);
+ if (val & (1 << MISC_REGISTERS_SPIO_5)) {
+ u32 reg_addr = (port ? MISC_REG_AEU_ENABLE1_FUNC_1_OUT_0 :
+ MISC_REG_AEU_ENABLE1_FUNC_0_OUT_0);
+ val = REG_RD(bp, reg_addr);
+ val |= AEU_INPUTS_ATTN_BITS_SPIO5;
+ REG_WR(bp, reg_addr, val);
+ }
+
+ return 0;
+}
+
+static void bnx2x_ilt_wr(struct bnx2x *bp, u32 index, dma_addr_t addr)
+{
+ int reg;
+
+ if (CHIP_IS_E1(bp))
+ reg = PXP2_REG_RQ_ONCHIP_AT + index*8;
+ else
+ reg = PXP2_REG_RQ_ONCHIP_AT_B0 + index*8;
+
+ bnx2x_wb_wr(bp, reg, ONCHIP_ADDR1(addr), ONCHIP_ADDR2(addr));
+}
+
+static inline void bnx2x_igu_clear_sb(struct bnx2x *bp, u8 idu_sb_id)
+{
+ bnx2x_igu_clear_sb_gen(bp, BP_FUNC(bp), idu_sb_id, true /*PF*/);
+}
+
+static inline void bnx2x_clear_func_ilt(struct bnx2x *bp, u32 func)
+{
+ u32 i, base = FUNC_ILT_BASE(func);
+ for (i = base; i < base + ILT_PER_FUNC; i++)
+ bnx2x_ilt_wr(bp, i, 0);
+}
+
+static int bnx2x_init_hw_func(struct bnx2x *bp)
+{
+ int port = BP_PORT(bp);
+ int func = BP_FUNC(bp);
+ int init_phase = PHASE_PF0 + func;
+ struct bnx2x_ilt *ilt = BP_ILT(bp);
+ u16 cdu_ilt_start;
+ u32 addr, val;
+ u32 main_mem_base, main_mem_size, main_mem_prty_clr;
+ int i, main_mem_width;
+
+ DP(BNX2X_MSG_MCP, "starting func init func %d\n", func);
+
+ /* FLR cleanup - hmmm */
+ if (!CHIP_IS_E1x(bp))
+ bnx2x_pf_flr_clnup(bp);
+
+ /* set MSI reconfigure capability */
+ if (bp->common.int_block == INT_BLOCK_HC) {
+ addr = (port ? HC_REG_CONFIG_1 : HC_REG_CONFIG_0);
+ val = REG_RD(bp, addr);
+ val |= HC_CONFIG_0_REG_MSI_ATTN_EN_0;
+ REG_WR(bp, addr, val);
+ }
+
+ bnx2x_init_block(bp, BLOCK_PXP, init_phase);
+ bnx2x_init_block(bp, BLOCK_PXP2, init_phase);
+
+ ilt = BP_ILT(bp);
+ cdu_ilt_start = ilt->clients[ILT_CLIENT_CDU].start;
+
+ for (i = 0; i < L2_ILT_LINES(bp); i++) {
+ ilt->lines[cdu_ilt_start + i].page =
+ bp->context.vcxt + (ILT_PAGE_CIDS * i);
+ ilt->lines[cdu_ilt_start + i].page_mapping =
+ bp->context.cxt_mapping + (CDU_ILT_PAGE_SZ * i);
+ /* cdu ilt pages are allocated manually so there's no need to
+ set the size */
+ }
+ bnx2x_ilt_init_op(bp, INITOP_SET);
+
+#ifdef BCM_CNIC
+ bnx2x_src_init_t2(bp, bp->t2, bp->t2_mapping, SRC_CONN_NUM);
+
+ /* T1 hash bits value determines the T1 number of entries */
+ REG_WR(bp, SRC_REG_NUMBER_HASH_BITS0 + port*4, SRC_HASH_BITS);
+#endif
+
+#ifndef BCM_CNIC
+ /* set NIC mode */
+ REG_WR(bp, PRS_REG_NIC_MODE, 1);
+#endif /* BCM_CNIC */
+
+ if (!CHIP_IS_E1x(bp)) {
+ u32 pf_conf = IGU_PF_CONF_FUNC_EN;
+
+ /* Turn on a single ISR mode in IGU if driver is going to use
+ * INT#x or MSI
+ */
+ if (!(bp->flags & USING_MSIX_FLAG))
+ pf_conf |= IGU_PF_CONF_SINGLE_ISR_EN;
+ /*
+ * Timers workaround bug: function init part.
+ * Need to wait 20msec after initializing ILT,
+ * needed to make sure there are no requests in
+ * one of the PXP internal queues with "old" ILT addresses
+ */
+ msleep(20);
+ /*
+ * Master enable - Due to WB DMAE writes performed before this
+ * register is re-initialized as part of the regular function
+ * init
+ */
+ REG_WR(bp, PGLUE_B_REG_INTERNAL_PFID_ENABLE_MASTER, 1);
+ /* Enable the function in IGU */
+ REG_WR(bp, IGU_REG_PF_CONFIGURATION, pf_conf);
+ }
+
+ bp->dmae_ready = 1;
+
+ bnx2x_init_block(bp, BLOCK_PGLUE_B, init_phase);
+
+ if (!CHIP_IS_E1x(bp))
+ REG_WR(bp, PGLUE_B_REG_WAS_ERROR_PF_7_0_CLR, func);
+
+ bnx2x_init_block(bp, BLOCK_ATC, init_phase);
+ bnx2x_init_block(bp, BLOCK_DMAE, init_phase);
+ bnx2x_init_block(bp, BLOCK_NIG, init_phase);
+ bnx2x_init_block(bp, BLOCK_SRC, init_phase);
+ bnx2x_init_block(bp, BLOCK_MISC, init_phase);
+ bnx2x_init_block(bp, BLOCK_TCM, init_phase);
+ bnx2x_init_block(bp, BLOCK_UCM, init_phase);
+ bnx2x_init_block(bp, BLOCK_CCM, init_phase);
+ bnx2x_init_block(bp, BLOCK_XCM, init_phase);
+ bnx2x_init_block(bp, BLOCK_TSEM, init_phase);
+ bnx2x_init_block(bp, BLOCK_USEM, init_phase);
+ bnx2x_init_block(bp, BLOCK_CSEM, init_phase);
+ bnx2x_init_block(bp, BLOCK_XSEM, init_phase);
+
+ if (!CHIP_IS_E1x(bp))
+ REG_WR(bp, QM_REG_PF_EN, 1);
+
+ if (!CHIP_IS_E1x(bp)) {
+ REG_WR(bp, TSEM_REG_VFPF_ERR_NUM, BNX2X_MAX_NUM_OF_VFS + func);
+ REG_WR(bp, USEM_REG_VFPF_ERR_NUM, BNX2X_MAX_NUM_OF_VFS + func);
+ REG_WR(bp, CSEM_REG_VFPF_ERR_NUM, BNX2X_MAX_NUM_OF_VFS + func);
+ REG_WR(bp, XSEM_REG_VFPF_ERR_NUM, BNX2X_MAX_NUM_OF_VFS + func);
+ }
+ bnx2x_init_block(bp, BLOCK_QM, init_phase);
+
+ bnx2x_init_block(bp, BLOCK_TM, init_phase);
+ bnx2x_init_block(bp, BLOCK_DORQ, init_phase);
+ bnx2x_init_block(bp, BLOCK_BRB1, init_phase);
+ bnx2x_init_block(bp, BLOCK_PRS, init_phase);
+ bnx2x_init_block(bp, BLOCK_TSDM, init_phase);
+ bnx2x_init_block(bp, BLOCK_CSDM, init_phase);
+ bnx2x_init_block(bp, BLOCK_USDM, init_phase);
+ bnx2x_init_block(bp, BLOCK_XSDM, init_phase);
+ bnx2x_init_block(bp, BLOCK_UPB, init_phase);
+ bnx2x_init_block(bp, BLOCK_XPB, init_phase);
+ bnx2x_init_block(bp, BLOCK_PBF, init_phase);
+ if (!CHIP_IS_E1x(bp))
+ REG_WR(bp, PBF_REG_DISABLE_PF, 0);
+
+ bnx2x_init_block(bp, BLOCK_CDU, init_phase);
+
+ bnx2x_init_block(bp, BLOCK_CFC, init_phase);
+
+ if (!CHIP_IS_E1x(bp))
+ REG_WR(bp, CFC_REG_WEAK_ENABLE_PF, 1);
+
+ if (IS_MF(bp)) {
+ REG_WR(bp, NIG_REG_LLH0_FUNC_EN + port*8, 1);
+ REG_WR(bp, NIG_REG_LLH0_FUNC_VLAN_ID + port*8, bp->mf_ov);
+ }
+
+ bnx2x_init_block(bp, BLOCK_MISC_AEU, init_phase);
+
+ /* HC init per function */
+ if (bp->common.int_block == INT_BLOCK_HC) {
+ if (CHIP_IS_E1H(bp)) {
+ REG_WR(bp, MISC_REG_AEU_GENERAL_ATTN_12 + func*4, 0);
+
+ REG_WR(bp, HC_REG_LEADING_EDGE_0 + port*8, 0);
+ REG_WR(bp, HC_REG_TRAILING_EDGE_0 + port*8, 0);
+ }
+ bnx2x_init_block(bp, BLOCK_HC, init_phase);
+
+ } else {
+ int num_segs, sb_idx, prod_offset;
+
+ REG_WR(bp, MISC_REG_AEU_GENERAL_ATTN_12 + func*4, 0);
+
+ if (!CHIP_IS_E1x(bp)) {
+ REG_WR(bp, IGU_REG_LEADING_EDGE_LATCH, 0);
+ REG_WR(bp, IGU_REG_TRAILING_EDGE_LATCH, 0);
+ }
+
+ bnx2x_init_block(bp, BLOCK_IGU, init_phase);
+
+ if (!CHIP_IS_E1x(bp)) {
+ int dsb_idx = 0;
+ /**
+ * Producer memory:
+ * E2 mode: address 0-135 match to the mapping memory;
+ * 136 - PF0 default prod; 137 - PF1 default prod;
+ * 138 - PF2 default prod; 139 - PF3 default prod;
+ * 140 - PF0 attn prod; 141 - PF1 attn prod;
+ * 142 - PF2 attn prod; 143 - PF3 attn prod;
+ * 144-147 reserved.
+ *
+ * E1.5 mode - In backward compatible mode;
+ * for non default SB; each even line in the memory
+ * holds the U producer and each odd line hold
+ * the C producer. The first 128 producers are for
+ * NDSB (PF0 - 0-31; PF1 - 32-63 and so on). The last 20
+ * producers are for the DSB for each PF.
+ * Each PF has five segments: (the order inside each
+ * segment is PF0; PF1; PF2; PF3) - 128-131 U prods;
+ * 132-135 C prods; 136-139 X prods; 140-143 T prods;
+ * 144-147 attn prods;
+ */
+ /* non-default-status-blocks */
+ num_segs = CHIP_INT_MODE_IS_BC(bp) ?
+ IGU_BC_NDSB_NUM_SEGS : IGU_NORM_NDSB_NUM_SEGS;
+ for (sb_idx = 0; sb_idx < bp->igu_sb_cnt; sb_idx++) {
+ prod_offset = (bp->igu_base_sb + sb_idx) *
+ num_segs;
+
+ for (i = 0; i < num_segs; i++) {
+ addr = IGU_REG_PROD_CONS_MEMORY +
+ (prod_offset + i) * 4;
+ REG_WR(bp, addr, 0);
+ }
+ /* send consumer update with value 0 */
+ bnx2x_ack_sb(bp, bp->igu_base_sb + sb_idx,
+ USTORM_ID, 0, IGU_INT_NOP, 1);
+ bnx2x_igu_clear_sb(bp,
+ bp->igu_base_sb + sb_idx);
+ }
+
+ /* default-status-blocks */
+ num_segs = CHIP_INT_MODE_IS_BC(bp) ?
+ IGU_BC_DSB_NUM_SEGS : IGU_NORM_DSB_NUM_SEGS;
+
+ if (CHIP_MODE_IS_4_PORT(bp))
+ dsb_idx = BP_FUNC(bp);
+ else
+ dsb_idx = BP_E1HVN(bp);
+
+ prod_offset = (CHIP_INT_MODE_IS_BC(bp) ?
+ IGU_BC_BASE_DSB_PROD + dsb_idx :
+ IGU_NORM_BASE_DSB_PROD + dsb_idx);
+
+ for (i = 0; i < (num_segs * E1HVN_MAX);
+ i += E1HVN_MAX) {
+ addr = IGU_REG_PROD_CONS_MEMORY +
+ (prod_offset + i)*4;
+ REG_WR(bp, addr, 0);
+ }
+ /* send consumer update with 0 */
+ if (CHIP_INT_MODE_IS_BC(bp)) {
+ bnx2x_ack_sb(bp, bp->igu_dsb_id,
+ USTORM_ID, 0, IGU_INT_NOP, 1);
+ bnx2x_ack_sb(bp, bp->igu_dsb_id,
+ CSTORM_ID, 0, IGU_INT_NOP, 1);
+ bnx2x_ack_sb(bp, bp->igu_dsb_id,
+ XSTORM_ID, 0, IGU_INT_NOP, 1);
+ bnx2x_ack_sb(bp, bp->igu_dsb_id,
+ TSTORM_ID, 0, IGU_INT_NOP, 1);
+ bnx2x_ack_sb(bp, bp->igu_dsb_id,
+ ATTENTION_ID, 0, IGU_INT_NOP, 1);
+ } else {
+ bnx2x_ack_sb(bp, bp->igu_dsb_id,
+ USTORM_ID, 0, IGU_INT_NOP, 1);
+ bnx2x_ack_sb(bp, bp->igu_dsb_id,
+ ATTENTION_ID, 0, IGU_INT_NOP, 1);
+ }
+ bnx2x_igu_clear_sb(bp, bp->igu_dsb_id);
+
+ /* !!! these should become driver const once
+ rf-tool supports split-68 const */
+ REG_WR(bp, IGU_REG_SB_INT_BEFORE_MASK_LSB, 0);
+ REG_WR(bp, IGU_REG_SB_INT_BEFORE_MASK_MSB, 0);
+ REG_WR(bp, IGU_REG_SB_MASK_LSB, 0);
+ REG_WR(bp, IGU_REG_SB_MASK_MSB, 0);
+ REG_WR(bp, IGU_REG_PBA_STATUS_LSB, 0);
+ REG_WR(bp, IGU_REG_PBA_STATUS_MSB, 0);
+ }
+ }
+
+ /* Reset PCIE errors for debug */
+ REG_WR(bp, 0x2114, 0xffffffff);
+ REG_WR(bp, 0x2120, 0xffffffff);
+
+ if (CHIP_IS_E1x(bp)) {
+ main_mem_size = HC_REG_MAIN_MEMORY_SIZE / 2; /*dwords*/
+ main_mem_base = HC_REG_MAIN_MEMORY +
+ BP_PORT(bp) * (main_mem_size * 4);
+ main_mem_prty_clr = HC_REG_HC_PRTY_STS_CLR;
+ main_mem_width = 8;
+
+ val = REG_RD(bp, main_mem_prty_clr);
+ if (val)
+ DP(BNX2X_MSG_MCP, "Hmmm... Parity errors in HC "
+ "block during "
+ "function init (0x%x)!\n", val);
+
+ /* Clear "false" parity errors in MSI-X table */
+ for (i = main_mem_base;
+ i < main_mem_base + main_mem_size * 4;
+ i += main_mem_width) {
+ bnx2x_read_dmae(bp, i, main_mem_width / 4);
+ bnx2x_write_dmae(bp, bnx2x_sp_mapping(bp, wb_data),
+ i, main_mem_width / 4);
+ }
+ /* Clear HC parity attention */
+ REG_RD(bp, main_mem_prty_clr);
+ }
+
+#ifdef BNX2X_STOP_ON_ERROR
+ /* Enable STORMs SP logging */
+ REG_WR8(bp, BAR_USTRORM_INTMEM +
+ USTORM_RECORD_SLOW_PATH_OFFSET(BP_FUNC(bp)), 1);
+ REG_WR8(bp, BAR_TSTRORM_INTMEM +
+ TSTORM_RECORD_SLOW_PATH_OFFSET(BP_FUNC(bp)), 1);
+ REG_WR8(bp, BAR_CSTRORM_INTMEM +
+ CSTORM_RECORD_SLOW_PATH_OFFSET(BP_FUNC(bp)), 1);
+ REG_WR8(bp, BAR_XSTRORM_INTMEM +
+ XSTORM_RECORD_SLOW_PATH_OFFSET(BP_FUNC(bp)), 1);
+#endif
+
+ bnx2x_phy_probe(&bp->link_params);
+
+ return 0;
+}
+
+
+void bnx2x_free_mem(struct bnx2x *bp)
+{
+ /* fastpath */
+ bnx2x_free_fp_mem(bp);
+ /* end of fastpath */
+
+ BNX2X_PCI_FREE(bp->def_status_blk, bp->def_status_blk_mapping,
+ sizeof(struct host_sp_status_block));
+
+ BNX2X_PCI_FREE(bp->fw_stats, bp->fw_stats_mapping,
+ bp->fw_stats_data_sz + bp->fw_stats_req_sz);
+
+ BNX2X_PCI_FREE(bp->slowpath, bp->slowpath_mapping,
+ sizeof(struct bnx2x_slowpath));
+
+ BNX2X_PCI_FREE(bp->context.vcxt, bp->context.cxt_mapping,
+ bp->context.size);
+
+ bnx2x_ilt_mem_op(bp, ILT_MEMOP_FREE);
+
+ BNX2X_FREE(bp->ilt->lines);
+
+#ifdef BCM_CNIC
+ if (!CHIP_IS_E1x(bp))
+ BNX2X_PCI_FREE(bp->cnic_sb.e2_sb, bp->cnic_sb_mapping,
+ sizeof(struct host_hc_status_block_e2));
+ else
+ BNX2X_PCI_FREE(bp->cnic_sb.e1x_sb, bp->cnic_sb_mapping,
+ sizeof(struct host_hc_status_block_e1x));
+
+ BNX2X_PCI_FREE(bp->t2, bp->t2_mapping, SRC_T2_SZ);
+#endif
+
+ BNX2X_PCI_FREE(bp->spq, bp->spq_mapping, BCM_PAGE_SIZE);
+
+ BNX2X_PCI_FREE(bp->eq_ring, bp->eq_mapping,
+ BCM_PAGE_SIZE * NUM_EQ_PAGES);
+}
+
+static inline int bnx2x_alloc_fw_stats_mem(struct bnx2x *bp)
+{
+ int num_groups;
+
+ /* number of eth_queues */
+ u8 num_queue_stats = BNX2X_NUM_ETH_QUEUES(bp);
+
+ /* Total number of FW statistics requests =
+ * 1 for port stats + 1 for PF stats + num_eth_queues */
+ bp->fw_stats_num = 2 + num_queue_stats;
+
+
+ /* Request is built from stats_query_header and an array of
+ * stats_query_cmd_group each of which contains
+ * STATS_QUERY_CMD_COUNT rules. The real number or requests is
+ * configured in the stats_query_header.
+ */
+ num_groups = (2 + num_queue_stats) / STATS_QUERY_CMD_COUNT +
+ (((2 + num_queue_stats) % STATS_QUERY_CMD_COUNT) ? 1 : 0);
+
+ bp->fw_stats_req_sz = sizeof(struct stats_query_header) +
+ num_groups * sizeof(struct stats_query_cmd_group);
+
+ /* Data for statistics requests + stats_conter
+ *
+ * stats_counter holds per-STORM counters that are incremented
+ * when STORM has finished with the current request.
+ */
+ bp->fw_stats_data_sz = sizeof(struct per_port_stats) +
+ sizeof(struct per_pf_stats) +
+ sizeof(struct per_queue_stats) * num_queue_stats +
+ sizeof(struct stats_counter);
+
+ BNX2X_PCI_ALLOC(bp->fw_stats, &bp->fw_stats_mapping,
+ bp->fw_stats_data_sz + bp->fw_stats_req_sz);
+
+ /* Set shortcuts */
+ bp->fw_stats_req = (struct bnx2x_fw_stats_req *)bp->fw_stats;
+ bp->fw_stats_req_mapping = bp->fw_stats_mapping;
+
+ bp->fw_stats_data = (struct bnx2x_fw_stats_data *)
+ ((u8 *)bp->fw_stats + bp->fw_stats_req_sz);
+
+ bp->fw_stats_data_mapping = bp->fw_stats_mapping +
+ bp->fw_stats_req_sz;
+ return 0;
+
+alloc_mem_err:
+ BNX2X_PCI_FREE(bp->fw_stats, bp->fw_stats_mapping,
+ bp->fw_stats_data_sz + bp->fw_stats_req_sz);
+ return -ENOMEM;
+}
+
+
+int bnx2x_alloc_mem(struct bnx2x *bp)
+{
+#ifdef BCM_CNIC
+ if (!CHIP_IS_E1x(bp))
+ /* size = the status block + ramrod buffers */
+ BNX2X_PCI_ALLOC(bp->cnic_sb.e2_sb, &bp->cnic_sb_mapping,
+ sizeof(struct host_hc_status_block_e2));
+ else
+ BNX2X_PCI_ALLOC(bp->cnic_sb.e1x_sb, &bp->cnic_sb_mapping,
+ sizeof(struct host_hc_status_block_e1x));
+
+ /* allocate searcher T2 table */
+ BNX2X_PCI_ALLOC(bp->t2, &bp->t2_mapping, SRC_T2_SZ);
+#endif
+
+
+ BNX2X_PCI_ALLOC(bp->def_status_blk, &bp->def_status_blk_mapping,
+ sizeof(struct host_sp_status_block));
+
+ BNX2X_PCI_ALLOC(bp->slowpath, &bp->slowpath_mapping,
+ sizeof(struct bnx2x_slowpath));
+
+ /* Allocated memory for FW statistics */
+ if (bnx2x_alloc_fw_stats_mem(bp))
+ goto alloc_mem_err;
+
+ bp->context.size = sizeof(union cdu_context) * BNX2X_L2_CID_COUNT(bp);
+
+ BNX2X_PCI_ALLOC(bp->context.vcxt, &bp->context.cxt_mapping,
+ bp->context.size);
+
+ BNX2X_ALLOC(bp->ilt->lines, sizeof(struct ilt_line) * ILT_MAX_LINES);
+
+ if (bnx2x_ilt_mem_op(bp, ILT_MEMOP_ALLOC))
+ goto alloc_mem_err;
+
+ /* Slow path ring */
+ BNX2X_PCI_ALLOC(bp->spq, &bp->spq_mapping, BCM_PAGE_SIZE);
+
+ /* EQ */
+ BNX2X_PCI_ALLOC(bp->eq_ring, &bp->eq_mapping,
+ BCM_PAGE_SIZE * NUM_EQ_PAGES);
+
+
+ /* fastpath */
+ /* need to be done at the end, since it's self adjusting to amount
+ * of memory available for RSS queues
+ */
+ if (bnx2x_alloc_fp_mem(bp))
+ goto alloc_mem_err;
+ return 0;
+
+alloc_mem_err:
+ bnx2x_free_mem(bp);
+ return -ENOMEM;
+}
+
+/*
+ * Init service functions
+ */
+
+int bnx2x_set_mac_one(struct bnx2x *bp, u8 *mac,
+ struct bnx2x_vlan_mac_obj *obj, bool set,
+ int mac_type, unsigned long *ramrod_flags)
+{
+ int rc;
+ struct bnx2x_vlan_mac_ramrod_params ramrod_param;
+
+ memset(&ramrod_param, 0, sizeof(ramrod_param));
+
+ /* Fill general parameters */
+ ramrod_param.vlan_mac_obj = obj;
+ ramrod_param.ramrod_flags = *ramrod_flags;
+
+ /* Fill a user request section if needed */
+ if (!test_bit(RAMROD_CONT, ramrod_flags)) {
+ memcpy(ramrod_param.user_req.u.mac.mac, mac, ETH_ALEN);
+
+ __set_bit(mac_type, &ramrod_param.user_req.vlan_mac_flags);
+
+ /* Set the command: ADD or DEL */
+ if (set)
+ ramrod_param.user_req.cmd = BNX2X_VLAN_MAC_ADD;
+ else
+ ramrod_param.user_req.cmd = BNX2X_VLAN_MAC_DEL;
+ }
+
+ rc = bnx2x_config_vlan_mac(bp, &ramrod_param);
+ if (rc < 0)
+ BNX2X_ERR("%s MAC failed\n", (set ? "Set" : "Del"));
+ return rc;
+}
+
+int bnx2x_del_all_macs(struct bnx2x *bp,
+ struct bnx2x_vlan_mac_obj *mac_obj,
+ int mac_type, bool wait_for_comp)
+{
+ int rc;
+ unsigned long ramrod_flags = 0, vlan_mac_flags = 0;
+
+ /* Wait for completion of requested */
+ if (wait_for_comp)
+ __set_bit(RAMROD_COMP_WAIT, &ramrod_flags);
+
+ /* Set the mac type of addresses we want to clear */
+ __set_bit(mac_type, &vlan_mac_flags);
+
+ rc = mac_obj->delete_all(bp, mac_obj, &vlan_mac_flags, &ramrod_flags);
+ if (rc < 0)
+ BNX2X_ERR("Failed to delete MACs: %d\n", rc);
+
+ return rc;
+}
+
+int bnx2x_set_eth_mac(struct bnx2x *bp, bool set)
+{
+ unsigned long ramrod_flags = 0;
+
+ DP(NETIF_MSG_IFUP, "Adding Eth MAC\n");
+
+ __set_bit(RAMROD_COMP_WAIT, &ramrod_flags);
+ /* Eth MAC is set on RSS leading client (fp[0]) */
+ return bnx2x_set_mac_one(bp, bp->dev->dev_addr, &bp->fp->mac_obj, set,
+ BNX2X_ETH_MAC, &ramrod_flags);
+}
+
+int bnx2x_setup_leading(struct bnx2x *bp)
+{
+ return bnx2x_setup_queue(bp, &bp->fp[0], 1);
+}
+
+/**
+ * bnx2x_set_int_mode - configure interrupt mode
+ *
+ * @bp: driver handle
+ *
+ * In case of MSI-X it will also try to enable MSI-X.
+ */
+static void __devinit bnx2x_set_int_mode(struct bnx2x *bp)
+{
+ switch (int_mode) {
+ case INT_MODE_MSI:
+ bnx2x_enable_msi(bp);
+ /* falling through... */
+ case INT_MODE_INTx:
+ bp->num_queues = 1 + NON_ETH_CONTEXT_USE;
+ DP(NETIF_MSG_IFUP, "set number of queues to 1\n");
+ break;
+ default:
+ /* Set number of queues according to bp->multi_mode value */
+ bnx2x_set_num_queues(bp);
+
+ DP(NETIF_MSG_IFUP, "set number of queues to %d\n",
+ bp->num_queues);
+
+ /* if we can't use MSI-X we only need one fp,
+ * so try to enable MSI-X with the requested number of fp's
+ * and fallback to MSI or legacy INTx with one fp
+ */
+ if (bnx2x_enable_msix(bp)) {
+ /* failed to enable MSI-X */
+ if (bp->multi_mode)
+ DP(NETIF_MSG_IFUP,
+ "Multi requested but failed to "
+ "enable MSI-X (%d), "
+ "set number of queues to %d\n",
+ bp->num_queues,
+ 1 + NON_ETH_CONTEXT_USE);
+ bp->num_queues = 1 + NON_ETH_CONTEXT_USE;
+
+ /* Try to enable MSI */
+ if (!(bp->flags & DISABLE_MSI_FLAG))
+ bnx2x_enable_msi(bp);
+ }
+ break;
+ }
+}
+
+/* must be called prioir to any HW initializations */
+static inline u16 bnx2x_cid_ilt_lines(struct bnx2x *bp)
+{
+ return L2_ILT_LINES(bp);
+}
+
+void bnx2x_ilt_set_info(struct bnx2x *bp)
+{
+ struct ilt_client_info *ilt_client;
+ struct bnx2x_ilt *ilt = BP_ILT(bp);
+ u16 line = 0;
+
+ ilt->start_line = FUNC_ILT_BASE(BP_FUNC(bp));
+ DP(BNX2X_MSG_SP, "ilt starts at line %d\n", ilt->start_line);
+
+ /* CDU */
+ ilt_client = &ilt->clients[ILT_CLIENT_CDU];
+ ilt_client->client_num = ILT_CLIENT_CDU;
+ ilt_client->page_size = CDU_ILT_PAGE_SZ;
+ ilt_client->flags = ILT_CLIENT_SKIP_MEM;
+ ilt_client->start = line;
+ line += bnx2x_cid_ilt_lines(bp);
+#ifdef BCM_CNIC
+ line += CNIC_ILT_LINES;
+#endif
+ ilt_client->end = line - 1;
+
+ DP(BNX2X_MSG_SP, "ilt client[CDU]: start %d, end %d, psz 0x%x, "
+ "flags 0x%x, hw psz %d\n",
+ ilt_client->start,
+ ilt_client->end,
+ ilt_client->page_size,
+ ilt_client->flags,
+ ilog2(ilt_client->page_size >> 12));
+
+ /* QM */
+ if (QM_INIT(bp->qm_cid_count)) {
+ ilt_client = &ilt->clients[ILT_CLIENT_QM];
+ ilt_client->client_num = ILT_CLIENT_QM;
+ ilt_client->page_size = QM_ILT_PAGE_SZ;
+ ilt_client->flags = 0;
+ ilt_client->start = line;
+
+ /* 4 bytes for each cid */
+ line += DIV_ROUND_UP(bp->qm_cid_count * QM_QUEUES_PER_FUNC * 4,
+ QM_ILT_PAGE_SZ);
+
+ ilt_client->end = line - 1;
+
+ DP(BNX2X_MSG_SP, "ilt client[QM]: start %d, end %d, psz 0x%x, "
+ "flags 0x%x, hw psz %d\n",
+ ilt_client->start,
+ ilt_client->end,
+ ilt_client->page_size,
+ ilt_client->flags,
+ ilog2(ilt_client->page_size >> 12));
+
+ }
+ /* SRC */
+ ilt_client = &ilt->clients[ILT_CLIENT_SRC];
+#ifdef BCM_CNIC
+ ilt_client->client_num = ILT_CLIENT_SRC;
+ ilt_client->page_size = SRC_ILT_PAGE_SZ;
+ ilt_client->flags = 0;
+ ilt_client->start = line;
+ line += SRC_ILT_LINES;
+ ilt_client->end = line - 1;
+
+ DP(BNX2X_MSG_SP, "ilt client[SRC]: start %d, end %d, psz 0x%x, "
+ "flags 0x%x, hw psz %d\n",
+ ilt_client->start,
+ ilt_client->end,
+ ilt_client->page_size,
+ ilt_client->flags,
+ ilog2(ilt_client->page_size >> 12));
+
+#else
+ ilt_client->flags = (ILT_CLIENT_SKIP_INIT | ILT_CLIENT_SKIP_MEM);
+#endif
+
+ /* TM */
+ ilt_client = &ilt->clients[ILT_CLIENT_TM];
+#ifdef BCM_CNIC
+ ilt_client->client_num = ILT_CLIENT_TM;
+ ilt_client->page_size = TM_ILT_PAGE_SZ;
+ ilt_client->flags = 0;
+ ilt_client->start = line;
+ line += TM_ILT_LINES;
+ ilt_client->end = line - 1;
+
+ DP(BNX2X_MSG_SP, "ilt client[TM]: start %d, end %d, psz 0x%x, "
+ "flags 0x%x, hw psz %d\n",
+ ilt_client->start,
+ ilt_client->end,
+ ilt_client->page_size,
+ ilt_client->flags,
+ ilog2(ilt_client->page_size >> 12));
+
+#else
+ ilt_client->flags = (ILT_CLIENT_SKIP_INIT | ILT_CLIENT_SKIP_MEM);
+#endif
+ BUG_ON(line > ILT_MAX_LINES);
+}
+
+/**
+ * bnx2x_pf_q_prep_init - prepare INIT transition parameters
+ *
+ * @bp: driver handle
+ * @fp: pointer to fastpath
+ * @init_params: pointer to parameters structure
+ *
+ * parameters configured:
+ * - HC configuration
+ * - Queue's CDU context
+ */
+static inline void bnx2x_pf_q_prep_init(struct bnx2x *bp,
+ struct bnx2x_fastpath *fp, struct bnx2x_queue_init_params *init_params)
+{
+
+ u8 cos;
+ /* FCoE Queue uses Default SB, thus has no HC capabilities */
+ if (!IS_FCOE_FP(fp)) {
+ __set_bit(BNX2X_Q_FLG_HC, &init_params->rx.flags);
+ __set_bit(BNX2X_Q_FLG_HC, &init_params->tx.flags);
+
+ /* If HC is supporterd, enable host coalescing in the transition
+ * to INIT state.
+ */
+ __set_bit(BNX2X_Q_FLG_HC_EN, &init_params->rx.flags);
+ __set_bit(BNX2X_Q_FLG_HC_EN, &init_params->tx.flags);
+
+ /* HC rate */
+ init_params->rx.hc_rate = bp->rx_ticks ?
+ (1000000 / bp->rx_ticks) : 0;
+ init_params->tx.hc_rate = bp->tx_ticks ?
+ (1000000 / bp->tx_ticks) : 0;
+
+ /* FW SB ID */
+ init_params->rx.fw_sb_id = init_params->tx.fw_sb_id =
+ fp->fw_sb_id;
+
+ /*
+ * CQ index among the SB indices: FCoE clients uses the default
+ * SB, therefore it's different.
+ */
+ init_params->rx.sb_cq_index = HC_INDEX_ETH_RX_CQ_CONS;
+ init_params->tx.sb_cq_index = HC_INDEX_ETH_FIRST_TX_CQ_CONS;
+ }
+
+ /* set maximum number of COSs supported by this queue */
+ init_params->max_cos = fp->max_cos;
+
+ DP(BNX2X_MSG_SP, "fp: %d setting queue params max cos to: %d\n",
+ fp->index, init_params->max_cos);
+
+ /* set the context pointers queue object */
+ for (cos = FIRST_TX_COS_INDEX; cos < init_params->max_cos; cos++)
+ init_params->cxts[cos] =
+ &bp->context.vcxt[fp->txdata[cos].cid].eth;
+}
+
+int bnx2x_setup_tx_only(struct bnx2x *bp, struct bnx2x_fastpath *fp,
+ struct bnx2x_queue_state_params *q_params,
+ struct bnx2x_queue_setup_tx_only_params *tx_only_params,
+ int tx_index, bool leading)
+{
+ memset(tx_only_params, 0, sizeof(*tx_only_params));
+
+ /* Set the command */
+ q_params->cmd = BNX2X_Q_CMD_SETUP_TX_ONLY;
+
+ /* Set tx-only QUEUE flags: don't zero statistics */
+ tx_only_params->flags = bnx2x_get_common_flags(bp, fp, false);
+
+ /* choose the index of the cid to send the slow path on */
+ tx_only_params->cid_index = tx_index;
+
+ /* Set general TX_ONLY_SETUP parameters */
+ bnx2x_pf_q_prep_general(bp, fp, &tx_only_params->gen_params, tx_index);
+
+ /* Set Tx TX_ONLY_SETUP parameters */
+ bnx2x_pf_tx_q_prep(bp, fp, &tx_only_params->txq_params, tx_index);
+
+ DP(BNX2X_MSG_SP, "preparing to send tx-only ramrod for connection:"
+ "cos %d, primary cid %d, cid %d, "
+ "client id %d, sp-client id %d, flags %lx\n",
+ tx_index, q_params->q_obj->cids[FIRST_TX_COS_INDEX],
+ q_params->q_obj->cids[tx_index], q_params->q_obj->cl_id,
+ tx_only_params->gen_params.spcl_id, tx_only_params->flags);
+
+ /* send the ramrod */
+ return bnx2x_queue_state_change(bp, q_params);
+}
+
+
+/**
+ * bnx2x_setup_queue - setup queue
+ *
+ * @bp: driver handle
+ * @fp: pointer to fastpath
+ * @leading: is leading
+ *
+ * This function performs 2 steps in a Queue state machine
+ * actually: 1) RESET->INIT 2) INIT->SETUP
+ */
+
+int bnx2x_setup_queue(struct bnx2x *bp, struct bnx2x_fastpath *fp,
+ bool leading)
+{
+ struct bnx2x_queue_state_params q_params = {0};
+ struct bnx2x_queue_setup_params *setup_params =
+ &q_params.params.setup;
+ struct bnx2x_queue_setup_tx_only_params *tx_only_params =
+ &q_params.params.tx_only;
+ int rc;
+ u8 tx_index;
+
+ DP(BNX2X_MSG_SP, "setting up queue %d\n", fp->index);
+
+ /* reset IGU state skip FCoE L2 queue */
+ if (!IS_FCOE_FP(fp))
+ bnx2x_ack_sb(bp, fp->igu_sb_id, USTORM_ID, 0,
+ IGU_INT_ENABLE, 0);
+
+ q_params.q_obj = &fp->q_obj;
+ /* We want to wait for completion in this context */
+ __set_bit(RAMROD_COMP_WAIT, &q_params.ramrod_flags);
+
+ /* Prepare the INIT parameters */
+ bnx2x_pf_q_prep_init(bp, fp, &q_params.params.init);
+
+ /* Set the command */
+ q_params.cmd = BNX2X_Q_CMD_INIT;
+
+ /* Change the state to INIT */
+ rc = bnx2x_queue_state_change(bp, &q_params);
+ if (rc) {
+ BNX2X_ERR("Queue(%d) INIT failed\n", fp->index);
+ return rc;
+ }
+
+ DP(BNX2X_MSG_SP, "init complete\n");
+
+
+ /* Now move the Queue to the SETUP state... */
+ memset(setup_params, 0, sizeof(*setup_params));
+
+ /* Set QUEUE flags */
+ setup_params->flags = bnx2x_get_q_flags(bp, fp, leading);
+
+ /* Set general SETUP parameters */
+ bnx2x_pf_q_prep_general(bp, fp, &setup_params->gen_params,
+ FIRST_TX_COS_INDEX);
+
+ bnx2x_pf_rx_q_prep(bp, fp, &setup_params->pause_params,
+ &setup_params->rxq_params);
+
+ bnx2x_pf_tx_q_prep(bp, fp, &setup_params->txq_params,
+ FIRST_TX_COS_INDEX);
+
+ /* Set the command */
+ q_params.cmd = BNX2X_Q_CMD_SETUP;
+
+ /* Change the state to SETUP */
+ rc = bnx2x_queue_state_change(bp, &q_params);
+ if (rc) {
+ BNX2X_ERR("Queue(%d) SETUP failed\n", fp->index);
+ return rc;
+ }
+
+ /* loop through the relevant tx-only indices */
+ for (tx_index = FIRST_TX_ONLY_COS_INDEX;
+ tx_index < fp->max_cos;
+ tx_index++) {
+
+ /* prepare and send tx-only ramrod*/
+ rc = bnx2x_setup_tx_only(bp, fp, &q_params,
+ tx_only_params, tx_index, leading);
+ if (rc) {
+ BNX2X_ERR("Queue(%d.%d) TX_ONLY_SETUP failed\n",
+ fp->index, tx_index);
+ return rc;
+ }
+ }
+
+ return rc;
+}
+
+static int bnx2x_stop_queue(struct bnx2x *bp, int index)
+{
+ struct bnx2x_fastpath *fp = &bp->fp[index];
+ struct bnx2x_fp_txdata *txdata;
+ struct bnx2x_queue_state_params q_params = {0};
+ int rc, tx_index;
+
+ DP(BNX2X_MSG_SP, "stopping queue %d cid %d\n", index, fp->cid);
+
+ q_params.q_obj = &fp->q_obj;
+ /* We want to wait for completion in this context */
+ __set_bit(RAMROD_COMP_WAIT, &q_params.ramrod_flags);
+
+
+ /* close tx-only connections */
+ for (tx_index = FIRST_TX_ONLY_COS_INDEX;
+ tx_index < fp->max_cos;
+ tx_index++){
+
+ /* ascertain this is a normal queue*/
+ txdata = &fp->txdata[tx_index];
+
+ DP(BNX2X_MSG_SP, "stopping tx-only queue %d\n",
+ txdata->txq_index);
+
+ /* send halt terminate on tx-only connection */
+ q_params.cmd = BNX2X_Q_CMD_TERMINATE;
+ memset(&q_params.params.terminate, 0,
+ sizeof(q_params.params.terminate));
+ q_params.params.terminate.cid_index = tx_index;
+
+ rc = bnx2x_queue_state_change(bp, &q_params);
+ if (rc)
+ return rc;
+
+ /* send halt terminate on tx-only connection */
+ q_params.cmd = BNX2X_Q_CMD_CFC_DEL;
+ memset(&q_params.params.cfc_del, 0,
+ sizeof(q_params.params.cfc_del));
+ q_params.params.cfc_del.cid_index = tx_index;
+ rc = bnx2x_queue_state_change(bp, &q_params);
+ if (rc)
+ return rc;
+ }
+ /* Stop the primary connection: */
+ /* ...halt the connection */
+ q_params.cmd = BNX2X_Q_CMD_HALT;
+ rc = bnx2x_queue_state_change(bp, &q_params);
+ if (rc)
+ return rc;
+
+ /* ...terminate the connection */
+ q_params.cmd = BNX2X_Q_CMD_TERMINATE;
+ memset(&q_params.params.terminate, 0,
+ sizeof(q_params.params.terminate));
+ q_params.params.terminate.cid_index = FIRST_TX_COS_INDEX;
+ rc = bnx2x_queue_state_change(bp, &q_params);
+ if (rc)
+ return rc;
+ /* ...delete cfc entry */
+ q_params.cmd = BNX2X_Q_CMD_CFC_DEL;
+ memset(&q_params.params.cfc_del, 0,
+ sizeof(q_params.params.cfc_del));
+ q_params.params.cfc_del.cid_index = FIRST_TX_COS_INDEX;
+ return bnx2x_queue_state_change(bp, &q_params);
+}
+
+
+static void bnx2x_reset_func(struct bnx2x *bp)
+{
+ int port = BP_PORT(bp);
+ int func = BP_FUNC(bp);
+ int i;
+
+ /* Disable the function in the FW */
+ REG_WR8(bp, BAR_XSTRORM_INTMEM + XSTORM_FUNC_EN_OFFSET(func), 0);
+ REG_WR8(bp, BAR_CSTRORM_INTMEM + CSTORM_FUNC_EN_OFFSET(func), 0);
+ REG_WR8(bp, BAR_TSTRORM_INTMEM + TSTORM_FUNC_EN_OFFSET(func), 0);
+ REG_WR8(bp, BAR_USTRORM_INTMEM + USTORM_FUNC_EN_OFFSET(func), 0);
+
+ /* FP SBs */
+ for_each_eth_queue(bp, i) {
+ struct bnx2x_fastpath *fp = &bp->fp[i];
+ REG_WR8(bp, BAR_CSTRORM_INTMEM +
+ CSTORM_STATUS_BLOCK_DATA_STATE_OFFSET(fp->fw_sb_id),
+ SB_DISABLED);
+ }
+
+#ifdef BCM_CNIC
+ /* CNIC SB */
+ REG_WR8(bp, BAR_CSTRORM_INTMEM +
+ CSTORM_STATUS_BLOCK_DATA_STATE_OFFSET(bnx2x_cnic_fw_sb_id(bp)),
+ SB_DISABLED);
+#endif
+ /* SP SB */
+ REG_WR8(bp, BAR_CSTRORM_INTMEM +
+ CSTORM_SP_STATUS_BLOCK_DATA_STATE_OFFSET(func),
+ SB_DISABLED);
+
+ for (i = 0; i < XSTORM_SPQ_DATA_SIZE / 4; i++)
+ REG_WR(bp, BAR_XSTRORM_INTMEM + XSTORM_SPQ_DATA_OFFSET(func),
+ 0);
+
+ /* Configure IGU */
+ if (bp->common.int_block == INT_BLOCK_HC) {
+ REG_WR(bp, HC_REG_LEADING_EDGE_0 + port*8, 0);
+ REG_WR(bp, HC_REG_TRAILING_EDGE_0 + port*8, 0);
+ } else {
+ REG_WR(bp, IGU_REG_LEADING_EDGE_LATCH, 0);
+ REG_WR(bp, IGU_REG_TRAILING_EDGE_LATCH, 0);
+ }
+
+#ifdef BCM_CNIC
+ /* Disable Timer scan */
+ REG_WR(bp, TM_REG_EN_LINEAR0_TIMER + port*4, 0);
+ /*
+ * Wait for at least 10ms and up to 2 second for the timers scan to
+ * complete
+ */
+ for (i = 0; i < 200; i++) {
+ msleep(10);
+ if (!REG_RD(bp, TM_REG_LIN0_SCAN_ON + port*4))
+ break;
+ }
+#endif
+ /* Clear ILT */
+ bnx2x_clear_func_ilt(bp, func);
+
+ /* Timers workaround bug for E2: if this is vnic-3,
+ * we need to set the entire ilt range for this timers.
+ */
+ if (!CHIP_IS_E1x(bp) && BP_VN(bp) == 3) {
+ struct ilt_client_info ilt_cli;
+ /* use dummy TM client */
+ memset(&ilt_cli, 0, sizeof(struct ilt_client_info));
+ ilt_cli.start = 0;
+ ilt_cli.end = ILT_NUM_PAGE_ENTRIES - 1;
+ ilt_cli.client_num = ILT_CLIENT_TM;
+
+ bnx2x_ilt_boundry_init_op(bp, &ilt_cli, 0, INITOP_CLEAR);
+ }
+
+ /* this assumes that reset_port() called before reset_func()*/
+ if (!CHIP_IS_E1x(bp))
+ bnx2x_pf_disable(bp);
+
+ bp->dmae_ready = 0;
+}
+
+static void bnx2x_reset_port(struct bnx2x *bp)
+{
+ int port = BP_PORT(bp);
+ u32 val;
+
+ /* Reset physical Link */
+ bnx2x__link_reset(bp);
+
+ REG_WR(bp, NIG_REG_MASK_INTERRUPT_PORT0 + port*4, 0);
+
+ /* Do not rcv packets to BRB */
+ REG_WR(bp, NIG_REG_LLH0_BRB1_DRV_MASK + port*4, 0x0);
+ /* Do not direct rcv packets that are not for MCP to the BRB */
+ REG_WR(bp, (port ? NIG_REG_LLH1_BRB1_NOT_MCP :
+ NIG_REG_LLH0_BRB1_NOT_MCP), 0x0);
+
+ /* Configure AEU */
+ REG_WR(bp, MISC_REG_AEU_MASK_ATTN_FUNC_0 + port*4, 0);
+
+ msleep(100);
+ /* Check for BRB port occupancy */
+ val = REG_RD(bp, BRB1_REG_PORT_NUM_OCC_BLOCKS_0 + port*4);
+ if (val)
+ DP(NETIF_MSG_IFDOWN,
+ "BRB1 is not empty %d blocks are occupied\n", val);
+
+ /* TODO: Close Doorbell port? */
+}
+
+static inline int bnx2x_reset_hw(struct bnx2x *bp, u32 load_code)
+{
+ struct bnx2x_func_state_params func_params = {0};
+
+ /* Prepare parameters for function state transitions */
+ __set_bit(RAMROD_COMP_WAIT, &func_params.ramrod_flags);
+
+ func_params.f_obj = &bp->func_obj;
+ func_params.cmd = BNX2X_F_CMD_HW_RESET;
+
+ func_params.params.hw_init.load_phase = load_code;
+
+ return bnx2x_func_state_change(bp, &func_params);
+}
+
+static inline int bnx2x_func_stop(struct bnx2x *bp)
+{
+ struct bnx2x_func_state_params func_params = {0};
+ int rc;
+
+ /* Prepare parameters for function state transitions */
+ __set_bit(RAMROD_COMP_WAIT, &func_params.ramrod_flags);
+ func_params.f_obj = &bp->func_obj;
+ func_params.cmd = BNX2X_F_CMD_STOP;
+
+ /*
+ * Try to stop the function the 'good way'. If fails (in case
+ * of a parity error during bnx2x_chip_cleanup()) and we are
+ * not in a debug mode, perform a state transaction in order to
+ * enable further HW_RESET transaction.
+ */
+ rc = bnx2x_func_state_change(bp, &func_params);
+ if (rc) {
+#ifdef BNX2X_STOP_ON_ERROR
+ return rc;
+#else
+ BNX2X_ERR("FUNC_STOP ramrod failed. Running a dry "
+ "transaction\n");
+ __set_bit(RAMROD_DRV_CLR_ONLY, &func_params.ramrod_flags);
+ return bnx2x_func_state_change(bp, &func_params);
+#endif
+ }
+
+ return 0;
+}
+
+/**
+ * bnx2x_send_unload_req - request unload mode from the MCP.
+ *
+ * @bp: driver handle
+ * @unload_mode: requested function's unload mode
+ *
+ * Return unload mode returned by the MCP: COMMON, PORT or FUNC.
+ */
+u32 bnx2x_send_unload_req(struct bnx2x *bp, int unload_mode)
+{
+ u32 reset_code = 0;
+ int port = BP_PORT(bp);
+
+ /* Select the UNLOAD request mode */
+ if (unload_mode == UNLOAD_NORMAL)
+ reset_code = DRV_MSG_CODE_UNLOAD_REQ_WOL_DIS;
+
+ else if (bp->flags & NO_WOL_FLAG)
+ reset_code = DRV_MSG_CODE_UNLOAD_REQ_WOL_MCP;
+
+ else if (bp->wol) {
+ u32 emac_base = port ? GRCBASE_EMAC1 : GRCBASE_EMAC0;
+ u8 *mac_addr = bp->dev->dev_addr;
+ u32 val;
+ /* The mac address is written to entries 1-4 to
+ preserve entry 0 which is used by the PMF */
+ u8 entry = (BP_E1HVN(bp) + 1)*8;
+
+ val = (mac_addr[0] << 8) | mac_addr[1];
+ EMAC_WR(bp, EMAC_REG_EMAC_MAC_MATCH + entry, val);
+
+ val = (mac_addr[2] << 24) | (mac_addr[3] << 16) |
+ (mac_addr[4] << 8) | mac_addr[5];
+ EMAC_WR(bp, EMAC_REG_EMAC_MAC_MATCH + entry + 4, val);
+
+ reset_code = DRV_MSG_CODE_UNLOAD_REQ_WOL_EN;
+
+ } else
+ reset_code = DRV_MSG_CODE_UNLOAD_REQ_WOL_DIS;
+
+ /* Send the request to the MCP */
+ if (!BP_NOMCP(bp))
+ reset_code = bnx2x_fw_command(bp, reset_code, 0);
+ else {
+ int path = BP_PATH(bp);
+
+ DP(NETIF_MSG_IFDOWN, "NO MCP - load counts[%d] "
+ "%d, %d, %d\n",
+ path, load_count[path][0], load_count[path][1],
+ load_count[path][2]);
+ load_count[path][0]--;
+ load_count[path][1 + port]--;
+ DP(NETIF_MSG_IFDOWN, "NO MCP - new load counts[%d] "
+ "%d, %d, %d\n",
+ path, load_count[path][0], load_count[path][1],
+ load_count[path][2]);
+ if (load_count[path][0] == 0)
+ reset_code = FW_MSG_CODE_DRV_UNLOAD_COMMON;
+ else if (load_count[path][1 + port] == 0)
+ reset_code = FW_MSG_CODE_DRV_UNLOAD_PORT;
+ else
+ reset_code = FW_MSG_CODE_DRV_UNLOAD_FUNCTION;
+ }
+
+ return reset_code;
+}
+
+/**
+ * bnx2x_send_unload_done - send UNLOAD_DONE command to the MCP.
+ *
+ * @bp: driver handle
+ */
+void bnx2x_send_unload_done(struct bnx2x *bp)
+{
+ /* Report UNLOAD_DONE to MCP */
+ if (!BP_NOMCP(bp))
+ bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_DONE, 0);
+}
+
+static inline int bnx2x_func_wait_started(struct bnx2x *bp)
+{
+ int tout = 50;
+ int msix = (bp->flags & USING_MSIX_FLAG) ? 1 : 0;
+
+ if (!bp->port.pmf)
+ return 0;
+
+ /*
+ * (assumption: No Attention from MCP at this stage)
+ * PMF probably in the middle of TXdisable/enable transaction
+ * 1. Sync IRS for default SB
+ * 2. Sync SP queue - this guarantes us that attention handling started
+ * 3. Wait, that TXdisable/enable transaction completes
+ *
+ * 1+2 guranty that if DCBx attention was scheduled it already changed
+ * pending bit of transaction from STARTED-->TX_STOPPED, if we alredy
+ * received complettion for the transaction the state is TX_STOPPED.
+ * State will return to STARTED after completion of TX_STOPPED-->STARTED
+ * transaction.
+ */
+
+ /* make sure default SB ISR is done */
+ if (msix)
+ synchronize_irq(bp->msix_table[0].vector);
+ else
+ synchronize_irq(bp->pdev->irq);
+
+ flush_workqueue(bnx2x_wq);
+
+ while (bnx2x_func_get_state(bp, &bp->func_obj) !=
+ BNX2X_F_STATE_STARTED && tout--)
+ msleep(20);
+
+ if (bnx2x_func_get_state(bp, &bp->func_obj) !=
+ BNX2X_F_STATE_STARTED) {
+#ifdef BNX2X_STOP_ON_ERROR
+ return -EBUSY;
+#else
+ /*
+ * Failed to complete the transaction in a "good way"
+ * Force both transactions with CLR bit
+ */
+ struct bnx2x_func_state_params func_params = {0};
+
+ DP(BNX2X_MSG_SP, "Hmmm... unexpected function state! "
+ "Forcing STARTED-->TX_ST0PPED-->STARTED\n");
+
+ func_params.f_obj = &bp->func_obj;
+ __set_bit(RAMROD_DRV_CLR_ONLY,
+ &func_params.ramrod_flags);
+
+ /* STARTED-->TX_ST0PPED */
+ func_params.cmd = BNX2X_F_CMD_TX_STOP;
+ bnx2x_func_state_change(bp, &func_params);
+
+ /* TX_ST0PPED-->STARTED */
+ func_params.cmd = BNX2X_F_CMD_TX_START;
+ return bnx2x_func_state_change(bp, &func_params);
+#endif
+ }
+
+ return 0;
+}
+
+void bnx2x_chip_cleanup(struct bnx2x *bp, int unload_mode)
+{
+ int port = BP_PORT(bp);
+ int i, rc = 0;
+ u8 cos;
+ struct bnx2x_mcast_ramrod_params rparam = {0};
+ u32 reset_code;
+
+ /* Wait until tx fastpath tasks complete */
+ for_each_tx_queue(bp, i) {
+ struct bnx2x_fastpath *fp = &bp->fp[i];
+
+ for_each_cos_in_tx_queue(fp, cos)
+ rc = bnx2x_clean_tx_queue(bp, &fp->txdata[cos]);
+#ifdef BNX2X_STOP_ON_ERROR
+ if (rc)
+ return;
+#endif
+ }
+
+ /* Give HW time to discard old tx messages */
+ usleep_range(1000, 1000);
+
+ /* Clean all ETH MACs */
+ rc = bnx2x_del_all_macs(bp, &bp->fp[0].mac_obj, BNX2X_ETH_MAC, false);
+ if (rc < 0)
+ BNX2X_ERR("Failed to delete all ETH macs: %d\n", rc);
+
+ /* Clean up UC list */
+ rc = bnx2x_del_all_macs(bp, &bp->fp[0].mac_obj, BNX2X_UC_LIST_MAC,
+ true);
+ if (rc < 0)
+ BNX2X_ERR("Failed to schedule DEL commands for UC MACs list: "
+ "%d\n", rc);
+
+ /* Disable LLH */
+ if (!CHIP_IS_E1(bp))
+ REG_WR(bp, NIG_REG_LLH0_FUNC_EN + port*8, 0);
+
+ /* Set "drop all" (stop Rx).
+ * We need to take a netif_addr_lock() here in order to prevent
+ * a race between the completion code and this code.
+ */
+ netif_addr_lock_bh(bp->dev);
+ /* Schedule the rx_mode command */
+ if (test_bit(BNX2X_FILTER_RX_MODE_PENDING, &bp->sp_state))
+ set_bit(BNX2X_FILTER_RX_MODE_SCHED, &bp->sp_state);
+ else
+ bnx2x_set_storm_rx_mode(bp);
+
+ /* Cleanup multicast configuration */
+ rparam.mcast_obj = &bp->mcast_obj;
+ rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_DEL);
+ if (rc < 0)
+ BNX2X_ERR("Failed to send DEL multicast command: %d\n", rc);
+
+ netif_addr_unlock_bh(bp->dev);
+
+
+
+ /*
+ * Send the UNLOAD_REQUEST to the MCP. This will return if
+ * this function should perform FUNC, PORT or COMMON HW
+ * reset.
+ */
+ reset_code = bnx2x_send_unload_req(bp, unload_mode);
+
+ /*
+ * (assumption: No Attention from MCP at this stage)
+ * PMF probably in the middle of TXdisable/enable transaction
+ */
+ rc = bnx2x_func_wait_started(bp);
+ if (rc) {
+ BNX2X_ERR("bnx2x_func_wait_started failed\n");
+#ifdef BNX2X_STOP_ON_ERROR
+ return;
+#endif
+ }
+
+ /* Close multi and leading connections
+ * Completions for ramrods are collected in a synchronous way
+ */
+ for_each_queue(bp, i)
+ if (bnx2x_stop_queue(bp, i))
+#ifdef BNX2X_STOP_ON_ERROR
+ return;
+#else
+ goto unload_error;
+#endif
+ /* If SP settings didn't get completed so far - something
+ * very wrong has happen.
+ */
+ if (!bnx2x_wait_sp_comp(bp, ~0x0UL))
+ BNX2X_ERR("Hmmm... Common slow path ramrods got stuck!\n");
+
+#ifndef BNX2X_STOP_ON_ERROR
+unload_error:
+#endif
+ rc = bnx2x_func_stop(bp);
+ if (rc) {
+ BNX2X_ERR("Function stop failed!\n");
+#ifdef BNX2X_STOP_ON_ERROR
+ return;
+#endif
+ }
+
+ /* Disable HW interrupts, NAPI */
+ bnx2x_netif_stop(bp, 1);
+
+ /* Release IRQs */
+ bnx2x_free_irq(bp);
+
+ /* Reset the chip */
+ rc = bnx2x_reset_hw(bp, reset_code);
+ if (rc)
+ BNX2X_ERR("HW_RESET failed\n");
+
+
+ /* Report UNLOAD_DONE to MCP */
+ bnx2x_send_unload_done(bp);
+}
+
+void bnx2x_disable_close_the_gate(struct bnx2x *bp)
+{
+ u32 val;
+
+ DP(NETIF_MSG_HW, "Disabling \"close the gates\"\n");
+
+ if (CHIP_IS_E1(bp)) {
+ int port = BP_PORT(bp);
+ u32 addr = port ? MISC_REG_AEU_MASK_ATTN_FUNC_1 :
+ MISC_REG_AEU_MASK_ATTN_FUNC_0;
+
+ val = REG_RD(bp, addr);
+ val &= ~(0x300);
+ REG_WR(bp, addr, val);
+ } else {
+ val = REG_RD(bp, MISC_REG_AEU_GENERAL_MASK);
+ val &= ~(MISC_AEU_GENERAL_MASK_REG_AEU_PXP_CLOSE_MASK |
+ MISC_AEU_GENERAL_MASK_REG_AEU_NIG_CLOSE_MASK);
+ REG_WR(bp, MISC_REG_AEU_GENERAL_MASK, val);
+ }
+}
+
+/* Close gates #2, #3 and #4: */
+static void bnx2x_set_234_gates(struct bnx2x *bp, bool close)
+{
+ u32 val;
+
+ /* Gates #2 and #4a are closed/opened for "not E1" only */
+ if (!CHIP_IS_E1(bp)) {
+ /* #4 */
+ REG_WR(bp, PXP_REG_HST_DISCARD_DOORBELLS, !!close);
+ /* #2 */
+ REG_WR(bp, PXP_REG_HST_DISCARD_INTERNAL_WRITES, !!close);
+ }
+
+ /* #3 */
+ if (CHIP_IS_E1x(bp)) {
+ /* Prevent interrupts from HC on both ports */
+ val = REG_RD(bp, HC_REG_CONFIG_1);
+ REG_WR(bp, HC_REG_CONFIG_1,
+ (!close) ? (val | HC_CONFIG_1_REG_BLOCK_DISABLE_1) :
+ (val & ~(u32)HC_CONFIG_1_REG_BLOCK_DISABLE_1));
+
+ val = REG_RD(bp, HC_REG_CONFIG_0);
+ REG_WR(bp, HC_REG_CONFIG_0,
+ (!close) ? (val | HC_CONFIG_0_REG_BLOCK_DISABLE_0) :
+ (val & ~(u32)HC_CONFIG_0_REG_BLOCK_DISABLE_0));
+ } else {
+ /* Prevent incomming interrupts in IGU */
+ val = REG_RD(bp, IGU_REG_BLOCK_CONFIGURATION);
+
+ REG_WR(bp, IGU_REG_BLOCK_CONFIGURATION,
+ (!close) ?
+ (val | IGU_BLOCK_CONFIGURATION_REG_BLOCK_ENABLE) :
+ (val & ~(u32)IGU_BLOCK_CONFIGURATION_REG_BLOCK_ENABLE));
+ }
+
+ DP(NETIF_MSG_HW, "%s gates #2, #3 and #4\n",
+ close ? "closing" : "opening");
+ mmiowb();
+}
+
+#define SHARED_MF_CLP_MAGIC 0x80000000 /* `magic' bit */
+
+static void bnx2x_clp_reset_prep(struct bnx2x *bp, u32 *magic_val)
+{
+ /* Do some magic... */
+ u32 val = MF_CFG_RD(bp, shared_mf_config.clp_mb);
+ *magic_val = val & SHARED_MF_CLP_MAGIC;
+ MF_CFG_WR(bp, shared_mf_config.clp_mb, val | SHARED_MF_CLP_MAGIC);
+}
+
+/**
+ * bnx2x_clp_reset_done - restore the value of the `magic' bit.
+ *
+ * @bp: driver handle
+ * @magic_val: old value of the `magic' bit.
+ */
+static void bnx2x_clp_reset_done(struct bnx2x *bp, u32 magic_val)
+{
+ /* Restore the `magic' bit value... */
+ u32 val = MF_CFG_RD(bp, shared_mf_config.clp_mb);
+ MF_CFG_WR(bp, shared_mf_config.clp_mb,
+ (val & (~SHARED_MF_CLP_MAGIC)) | magic_val);
+}
+
+/**
+ * bnx2x_reset_mcp_prep - prepare for MCP reset.
+ *
+ * @bp: driver handle
+ * @magic_val: old value of 'magic' bit.
+ *
+ * Takes care of CLP configurations.
+ */
+static void bnx2x_reset_mcp_prep(struct bnx2x *bp, u32 *magic_val)
+{
+ u32 shmem;
+ u32 validity_offset;
+
+ DP(NETIF_MSG_HW, "Starting\n");
+
+ /* Set `magic' bit in order to save MF config */
+ if (!CHIP_IS_E1(bp))
+ bnx2x_clp_reset_prep(bp, magic_val);
+
+ /* Get shmem offset */
+ shmem = REG_RD(bp, MISC_REG_SHARED_MEM_ADDR);
+ validity_offset = offsetof(struct shmem_region, validity_map[0]);
+
+ /* Clear validity map flags */
+ if (shmem > 0)
+ REG_WR(bp, shmem + validity_offset, 0);
+}
+
+#define MCP_TIMEOUT 5000 /* 5 seconds (in ms) */
+#define MCP_ONE_TIMEOUT 100 /* 100 ms */
+
+/**
+ * bnx2x_mcp_wait_one - wait for MCP_ONE_TIMEOUT
+ *
+ * @bp: driver handle
+ */
+static inline void bnx2x_mcp_wait_one(struct bnx2x *bp)
+{
+ /* special handling for emulation and FPGA,
+ wait 10 times longer */
+ if (CHIP_REV_IS_SLOW(bp))
+ msleep(MCP_ONE_TIMEOUT*10);
+ else
+ msleep(MCP_ONE_TIMEOUT);
+}
+
+/*
+ * initializes bp->common.shmem_base and waits for validity signature to appear
+ */
+static int bnx2x_init_shmem(struct bnx2x *bp)
+{
+ int cnt = 0;
+ u32 val = 0;
+
+ do {
+ bp->common.shmem_base = REG_RD(bp, MISC_REG_SHARED_MEM_ADDR);
+ if (bp->common.shmem_base) {
+ val = SHMEM_RD(bp, validity_map[BP_PORT(bp)]);
+ if (val & SHR_MEM_VALIDITY_MB)
+ return 0;
+ }
+
+ bnx2x_mcp_wait_one(bp);
+
+ } while (cnt++ < (MCP_TIMEOUT / MCP_ONE_TIMEOUT));
+
+ BNX2X_ERR("BAD MCP validity signature\n");
+
+ return -ENODEV;
+}
+
+static int bnx2x_reset_mcp_comp(struct bnx2x *bp, u32 magic_val)
+{
+ int rc = bnx2x_init_shmem(bp);
+
+ /* Restore the `magic' bit value */
+ if (!CHIP_IS_E1(bp))
+ bnx2x_clp_reset_done(bp, magic_val);
+
+ return rc;
+}
+
+static void bnx2x_pxp_prep(struct bnx2x *bp)
+{
+ if (!CHIP_IS_E1(bp)) {
+ REG_WR(bp, PXP2_REG_RD_START_INIT, 0);
+ REG_WR(bp, PXP2_REG_RQ_RBC_DONE, 0);
+ mmiowb();
+ }
+}
+
+/*
+ * Reset the whole chip except for:
+ * - PCIE core
+ * - PCI Glue, PSWHST, PXP/PXP2 RF (all controlled by
+ * one reset bit)
+ * - IGU
+ * - MISC (including AEU)
+ * - GRC
+ * - RBCN, RBCP
+ */
+static void bnx2x_process_kill_chip_reset(struct bnx2x *bp, bool global)
+{
+ u32 not_reset_mask1, reset_mask1, not_reset_mask2, reset_mask2;
+ u32 global_bits2, stay_reset2;
+
+ /*
+ * Bits that have to be set in reset_mask2 if we want to reset 'global'
+ * (per chip) blocks.
+ */
+ global_bits2 =
+ MISC_REGISTERS_RESET_REG_2_RST_MCP_N_RESET_CMN_CPU |
+ MISC_REGISTERS_RESET_REG_2_RST_MCP_N_RESET_CMN_CORE;
+
+ /* Don't reset the following blocks */
+ not_reset_mask1 =
+ MISC_REGISTERS_RESET_REG_1_RST_HC |
+ MISC_REGISTERS_RESET_REG_1_RST_PXPV |
+ MISC_REGISTERS_RESET_REG_1_RST_PXP;
+
+ not_reset_mask2 =
+ MISC_REGISTERS_RESET_REG_2_RST_PCI_MDIO |
+ MISC_REGISTERS_RESET_REG_2_RST_EMAC0_HARD_CORE |
+ MISC_REGISTERS_RESET_REG_2_RST_EMAC1_HARD_CORE |
+ MISC_REGISTERS_RESET_REG_2_RST_MISC_CORE |
+ MISC_REGISTERS_RESET_REG_2_RST_RBCN |
+ MISC_REGISTERS_RESET_REG_2_RST_GRC |
+ MISC_REGISTERS_RESET_REG_2_RST_MCP_N_RESET_REG_HARD_CORE |
+ MISC_REGISTERS_RESET_REG_2_RST_MCP_N_HARD_CORE_RST_B |
+ MISC_REGISTERS_RESET_REG_2_RST_ATC |
+ MISC_REGISTERS_RESET_REG_2_PGLC;
+
+ /*
+ * Keep the following blocks in reset:
+ * - all xxMACs are handled by the bnx2x_link code.
+ */
+ stay_reset2 =
+ MISC_REGISTERS_RESET_REG_2_RST_BMAC0 |
+ MISC_REGISTERS_RESET_REG_2_RST_BMAC1 |
+ MISC_REGISTERS_RESET_REG_2_RST_EMAC0 |
+ MISC_REGISTERS_RESET_REG_2_RST_EMAC1 |
+ MISC_REGISTERS_RESET_REG_2_UMAC0 |
+ MISC_REGISTERS_RESET_REG_2_UMAC1 |
+ MISC_REGISTERS_RESET_REG_2_XMAC |
+ MISC_REGISTERS_RESET_REG_2_XMAC_SOFT;
+
+ /* Full reset masks according to the chip */
+ reset_mask1 = 0xffffffff;
+
+ if (CHIP_IS_E1(bp))
+ reset_mask2 = 0xffff;
+ else if (CHIP_IS_E1H(bp))
+ reset_mask2 = 0x1ffff;
+ else if (CHIP_IS_E2(bp))
+ reset_mask2 = 0xfffff;
+ else /* CHIP_IS_E3 */
+ reset_mask2 = 0x3ffffff;
+
+ /* Don't reset global blocks unless we need to */
+ if (!global)
+ reset_mask2 &= ~global_bits2;
+
+ /*
+ * In case of attention in the QM, we need to reset PXP
+ * (MISC_REGISTERS_RESET_REG_2_RST_PXP_RQ_RD_WR) before QM
+ * because otherwise QM reset would release 'close the gates' shortly
+ * before resetting the PXP, then the PSWRQ would send a write
+ * request to PGLUE. Then when PXP is reset, PGLUE would try to
+ * read the payload data from PSWWR, but PSWWR would not
+ * respond. The write queue in PGLUE would stuck, dmae commands
+ * would not return. Therefore it's important to reset the second
+ * reset register (containing the
+ * MISC_REGISTERS_RESET_REG_2_RST_PXP_RQ_RD_WR bit) before the
+ * first one (containing the MISC_REGISTERS_RESET_REG_1_RST_QM
+ * bit).
+ */
+ REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_2_CLEAR,
+ reset_mask2 & (~not_reset_mask2));
+
+ REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_1_CLEAR,
+ reset_mask1 & (~not_reset_mask1));
+
+ barrier();
+ mmiowb();
+
+ REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_2_SET,
+ reset_mask2 & (~stay_reset2));
+
+ barrier();
+ mmiowb();
+
+ REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_1_SET, reset_mask1);
+ mmiowb();
+}
+
+/**
+ * bnx2x_er_poll_igu_vq - poll for pending writes bit.
+ * It should get cleared in no more than 1s.
+ *
+ * @bp: driver handle
+ *
+ * It should get cleared in no more than 1s. Returns 0 if
+ * pending writes bit gets cleared.
+ */
+static int bnx2x_er_poll_igu_vq(struct bnx2x *bp)
+{
+ u32 cnt = 1000;
+ u32 pend_bits = 0;
+
+ do {
+ pend_bits = REG_RD(bp, IGU_REG_PENDING_BITS_STATUS);
+
+ if (pend_bits == 0)
+ break;
+
+ usleep_range(1000, 1000);
+ } while (cnt-- > 0);
+
+ if (cnt <= 0) {
+ BNX2X_ERR("Still pending IGU requests pend_bits=%x!\n",
+ pend_bits);
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
+static int bnx2x_process_kill(struct bnx2x *bp, bool global)
+{
+ int cnt = 1000;
+ u32 val = 0;
+ u32 sr_cnt, blk_cnt, port_is_idle_0, port_is_idle_1, pgl_exp_rom2;
+
+
+ /* Empty the Tetris buffer, wait for 1s */
+ do {
+ sr_cnt = REG_RD(bp, PXP2_REG_RD_SR_CNT);
+ blk_cnt = REG_RD(bp, PXP2_REG_RD_BLK_CNT);
+ port_is_idle_0 = REG_RD(bp, PXP2_REG_RD_PORT_IS_IDLE_0);
+ port_is_idle_1 = REG_RD(bp, PXP2_REG_RD_PORT_IS_IDLE_1);
+ pgl_exp_rom2 = REG_RD(bp, PXP2_REG_PGL_EXP_ROM2);
+ if ((sr_cnt == 0x7e) && (blk_cnt == 0xa0) &&
+ ((port_is_idle_0 & 0x1) == 0x1) &&
+ ((port_is_idle_1 & 0x1) == 0x1) &&
+ (pgl_exp_rom2 == 0xffffffff))
+ break;
+ usleep_range(1000, 1000);
+ } while (cnt-- > 0);
+
+ if (cnt <= 0) {
+ DP(NETIF_MSG_HW, "Tetris buffer didn't get empty or there"
+ " are still"
+ " outstanding read requests after 1s!\n");
+ DP(NETIF_MSG_HW, "sr_cnt=0x%08x, blk_cnt=0x%08x,"
+ " port_is_idle_0=0x%08x,"
+ " port_is_idle_1=0x%08x, pgl_exp_rom2=0x%08x\n",
+ sr_cnt, blk_cnt, port_is_idle_0, port_is_idle_1,
+ pgl_exp_rom2);
+ return -EAGAIN;
+ }
+
+ barrier();
+
+ /* Close gates #2, #3 and #4 */
+ bnx2x_set_234_gates(bp, true);
+
+ /* Poll for IGU VQs for 57712 and newer chips */
+ if (!CHIP_IS_E1x(bp) && bnx2x_er_poll_igu_vq(bp))
+ return -EAGAIN;
+
+
+ /* TBD: Indicate that "process kill" is in progress to MCP */
+
+ /* Clear "unprepared" bit */
+ REG_WR(bp, MISC_REG_UNPREPARED, 0);
+ barrier();
+
+ /* Make sure all is written to the chip before the reset */
+ mmiowb();
+
+ /* Wait for 1ms to empty GLUE and PCI-E core queues,
+ * PSWHST, GRC and PSWRD Tetris buffer.
+ */
+ usleep_range(1000, 1000);
+
+ /* Prepare to chip reset: */
+ /* MCP */
+ if (global)
+ bnx2x_reset_mcp_prep(bp, &val);
+
+ /* PXP */
+ bnx2x_pxp_prep(bp);
+ barrier();
+
+ /* reset the chip */
+ bnx2x_process_kill_chip_reset(bp, global);
+ barrier();
+
+ /* Recover after reset: */
+ /* MCP */
+ if (global && bnx2x_reset_mcp_comp(bp, val))
+ return -EAGAIN;
+
+ /* TBD: Add resetting the NO_MCP mode DB here */
+
+ /* PXP */
+ bnx2x_pxp_prep(bp);
+
+ /* Open the gates #2, #3 and #4 */
+ bnx2x_set_234_gates(bp, false);
+
+ /* TBD: IGU/AEU preparation bring back the AEU/IGU to a
+ * reset state, re-enable attentions. */
+
+ return 0;
+}
+
+int bnx2x_leader_reset(struct bnx2x *bp)
+{
+ int rc = 0;
+ bool global = bnx2x_reset_is_global(bp);
+
+ /* Try to recover after the failure */
+ if (bnx2x_process_kill(bp, global)) {
+ netdev_err(bp->dev, "Something bad had happen on engine %d! "
+ "Aii!\n", BP_PATH(bp));
+ rc = -EAGAIN;
+ goto exit_leader_reset;
+ }
+
+ /*
+ * Clear RESET_IN_PROGRES and RESET_GLOBAL bits and update the driver
+ * state.
+ */
+ bnx2x_set_reset_done(bp);
+ if (global)
+ bnx2x_clear_reset_global(bp);
+
+exit_leader_reset:
+ bp->is_leader = 0;
+ bnx2x_release_leader_lock(bp);
+ smp_mb();
+ return rc;
+}
+
+static inline void bnx2x_recovery_failed(struct bnx2x *bp)
+{
+ netdev_err(bp->dev, "Recovery has failed. Power cycle is needed.\n");
+
+ /* Disconnect this device */
+ netif_device_detach(bp->dev);
+
+ /*
+ * Block ifup for all function on this engine until "process kill"
+ * or power cycle.
+ */
+ bnx2x_set_reset_in_progress(bp);
+
+ /* Shut down the power */
+ bnx2x_set_power_state(bp, PCI_D3hot);
+
+ bp->recovery_state = BNX2X_RECOVERY_FAILED;
+
+ smp_mb();
+}
+
+/*
+ * Assumption: runs under rtnl lock. This together with the fact
+ * that it's called only from bnx2x_sp_rtnl() ensure that it
+ * will never be called when netif_running(bp->dev) is false.
+ */
+static void bnx2x_parity_recover(struct bnx2x *bp)
+{
+ bool global = false;
+
+ DP(NETIF_MSG_HW, "Handling parity\n");
+ while (1) {
+ switch (bp->recovery_state) {
+ case BNX2X_RECOVERY_INIT:
+ DP(NETIF_MSG_HW, "State is BNX2X_RECOVERY_INIT\n");
+ bnx2x_chk_parity_attn(bp, &global, false);
+
+ /* Try to get a LEADER_LOCK HW lock */
+ if (bnx2x_trylock_leader_lock(bp)) {
+ bnx2x_set_reset_in_progress(bp);
+ /*
+ * Check if there is a global attention and if
+ * there was a global attention, set the global
+ * reset bit.
+ */
+
+ if (global)
+ bnx2x_set_reset_global(bp);
+
+ bp->is_leader = 1;
+ }
+
+ /* Stop the driver */
+ /* If interface has been removed - break */
+ if (bnx2x_nic_unload(bp, UNLOAD_RECOVERY))
+ return;
+
+ bp->recovery_state = BNX2X_RECOVERY_WAIT;
+
+ /*
+ * Reset MCP command sequence number and MCP mail box
+ * sequence as we are going to reset the MCP.
+ */
+ if (global) {
+ bp->fw_seq = 0;
+ bp->fw_drv_pulse_wr_seq = 0;
+ }
+
+ /* Ensure "is_leader", MCP command sequence and
+ * "recovery_state" update values are seen on other
+ * CPUs.
+ */
+ smp_mb();
+ break;
+
+ case BNX2X_RECOVERY_WAIT:
+ DP(NETIF_MSG_HW, "State is BNX2X_RECOVERY_WAIT\n");
+ if (bp->is_leader) {
+ int other_engine = BP_PATH(bp) ? 0 : 1;
+ u32 other_load_counter =
+ bnx2x_get_load_cnt(bp, other_engine);
+ u32 load_counter =
+ bnx2x_get_load_cnt(bp, BP_PATH(bp));
+ global = bnx2x_reset_is_global(bp);
+
+ /*
+ * In case of a parity in a global block, let
+ * the first leader that performs a
+ * leader_reset() reset the global blocks in
+ * order to clear global attentions. Otherwise
+ * the the gates will remain closed for that
+ * engine.
+ */
+ if (load_counter ||
+ (global && other_load_counter)) {
+ /* Wait until all other functions get
+ * down.
+ */
+ schedule_delayed_work(&bp->sp_rtnl_task,
+ HZ/10);
+ return;
+ } else {
+ /* If all other functions got down -
+ * try to bring the chip back to
+ * normal. In any case it's an exit
+ * point for a leader.
+ */
+ if (bnx2x_leader_reset(bp)) {
+ bnx2x_recovery_failed(bp);
+ return;
+ }
+
+ /* If we are here, means that the
+ * leader has succeeded and doesn't
+ * want to be a leader any more. Try
+ * to continue as a none-leader.
+ */
+ break;
+ }
+ } else { /* non-leader */
+ if (!bnx2x_reset_is_done(bp, BP_PATH(bp))) {
+ /* Try to get a LEADER_LOCK HW lock as
+ * long as a former leader may have
+ * been unloaded by the user or
+ * released a leadership by another
+ * reason.
+ */
+ if (bnx2x_trylock_leader_lock(bp)) {
+ /* I'm a leader now! Restart a
+ * switch case.
+ */
+ bp->is_leader = 1;
+ break;
+ }
+
+ schedule_delayed_work(&bp->sp_rtnl_task,
+ HZ/10);
+ return;
+
+ } else {
+ /*
+ * If there was a global attention, wait
+ * for it to be cleared.
+ */
+ if (bnx2x_reset_is_global(bp)) {
+ schedule_delayed_work(
+ &bp->sp_rtnl_task,
+ HZ/10);
+ return;
+ }
+
+ if (bnx2x_nic_load(bp, LOAD_NORMAL))
+ bnx2x_recovery_failed(bp);
+ else {
+ bp->recovery_state =
+ BNX2X_RECOVERY_DONE;
+ smp_mb();
+ }
+
+ return;
+ }
+ }
+ default:
+ return;
+ }
+ }
+}
+
+/* bnx2x_nic_unload() flushes the bnx2x_wq, thus reset task is
+ * scheduled on a general queue in order to prevent a dead lock.
+ */
+static void bnx2x_sp_rtnl_task(struct work_struct *work)
+{
+ struct bnx2x *bp = container_of(work, struct bnx2x, sp_rtnl_task.work);
+
+ rtnl_lock();
+
+ if (!netif_running(bp->dev))
+ goto sp_rtnl_exit;
+
+ /* if stop on error is defined no recovery flows should be executed */
+#ifdef BNX2X_STOP_ON_ERROR
+ BNX2X_ERR("recovery flow called but STOP_ON_ERROR defined "
+ "so reset not done to allow debug dump,\n"
+ "you will need to reboot when done\n");
+ goto sp_rtnl_not_reset;
+#endif
+
+ if (unlikely(bp->recovery_state != BNX2X_RECOVERY_DONE)) {
+ /*
+ * Clear all pending SP commands as we are going to reset the
+ * function anyway.
+ */
+ bp->sp_rtnl_state = 0;
+ smp_mb();
+
+ bnx2x_parity_recover(bp);
+
+ goto sp_rtnl_exit;
+ }
+
+ if (test_and_clear_bit(BNX2X_SP_RTNL_TX_TIMEOUT, &bp->sp_rtnl_state)) {
+ /*
+ * Clear all pending SP commands as we are going to reset the
+ * function anyway.
+ */
+ bp->sp_rtnl_state = 0;
+ smp_mb();
+
+ bnx2x_nic_unload(bp, UNLOAD_NORMAL);
+ bnx2x_nic_load(bp, LOAD_NORMAL);
+
+ goto sp_rtnl_exit;
+ }
+#ifdef BNX2X_STOP_ON_ERROR
+sp_rtnl_not_reset:
+#endif
+ if (test_and_clear_bit(BNX2X_SP_RTNL_SETUP_TC, &bp->sp_rtnl_state))
+ bnx2x_setup_tc(bp->dev, bp->dcbx_port_params.ets.num_of_cos);
+
+sp_rtnl_exit:
+ rtnl_unlock();
+}
+
+/* end of nic load/unload */
+
+static void bnx2x_period_task(struct work_struct *work)
+{
+ struct bnx2x *bp = container_of(work, struct bnx2x, period_task.work);
+
+ if (!netif_running(bp->dev))
+ goto period_task_exit;
+
+ if (CHIP_REV_IS_SLOW(bp)) {
+ BNX2X_ERR("period task called on emulation, ignoring\n");
+ goto period_task_exit;
+ }
+
+ bnx2x_acquire_phy_lock(bp);
+ /*
+ * The barrier is needed to ensure the ordering between the writing to
+ * the bp->port.pmf in the bnx2x_nic_load() or bnx2x_pmf_update() and
+ * the reading here.
+ */
+ smp_mb();
+ if (bp->port.pmf) {
+ bnx2x_period_func(&bp->link_params, &bp->link_vars);
+
+ /* Re-queue task in 1 sec */
+ queue_delayed_work(bnx2x_wq, &bp->period_task, 1*HZ);
+ }
+
+ bnx2x_release_phy_lock(bp);
+period_task_exit:
+ return;
+}
+
+/*
+ * Init service functions
+ */
+
+static u32 bnx2x_get_pretend_reg(struct bnx2x *bp)
+{
+ u32 base = PXP2_REG_PGL_PRETEND_FUNC_F0;
+ u32 stride = PXP2_REG_PGL_PRETEND_FUNC_F1 - base;
+ return base + (BP_ABS_FUNC(bp)) * stride;
+}
+
+static void bnx2x_undi_int_disable_e1h(struct bnx2x *bp)
+{
+ u32 reg = bnx2x_get_pretend_reg(bp);
+
+ /* Flush all outstanding writes */
+ mmiowb();
+
+ /* Pretend to be function 0 */
+ REG_WR(bp, reg, 0);
+ REG_RD(bp, reg); /* Flush the GRC transaction (in the chip) */
+
+ /* From now we are in the "like-E1" mode */
+ bnx2x_int_disable(bp);
+
+ /* Flush all outstanding writes */
+ mmiowb();
+
+ /* Restore the original function */
+ REG_WR(bp, reg, BP_ABS_FUNC(bp));
+ REG_RD(bp, reg);
+}
+
+static inline void bnx2x_undi_int_disable(struct bnx2x *bp)
+{
+ if (CHIP_IS_E1(bp))
+ bnx2x_int_disable(bp);
+ else
+ bnx2x_undi_int_disable_e1h(bp);
+}
+
+static void __devinit bnx2x_undi_unload(struct bnx2x *bp)
+{
+ u32 val;
+
+ /* Check if there is any driver already loaded */
+ val = REG_RD(bp, MISC_REG_UNPREPARED);
+ if (val == 0x1) {
+ /* Check if it is the UNDI driver
+ * UNDI driver initializes CID offset for normal bell to 0x7
+ */
+ bnx2x_acquire_hw_lock(bp, HW_LOCK_RESOURCE_UNDI);
+ val = REG_RD(bp, DORQ_REG_NORM_CID_OFST);
+ if (val == 0x7) {
+ u32 reset_code = DRV_MSG_CODE_UNLOAD_REQ_WOL_DIS;
+ /* save our pf_num */
+ int orig_pf_num = bp->pf_num;
+ int port;
+ u32 swap_en, swap_val, value;
+
+ /* clear the UNDI indication */
+ REG_WR(bp, DORQ_REG_NORM_CID_OFST, 0);
+
+ BNX2X_DEV_INFO("UNDI is active! reset device\n");
+
+ /* try unload UNDI on port 0 */
+ bp->pf_num = 0;
+ bp->fw_seq =
+ (SHMEM_RD(bp, func_mb[bp->pf_num].drv_mb_header) &
+ DRV_MSG_SEQ_NUMBER_MASK);
+ reset_code = bnx2x_fw_command(bp, reset_code, 0);
+
+ /* if UNDI is loaded on the other port */
+ if (reset_code != FW_MSG_CODE_DRV_UNLOAD_COMMON) {
+
+ /* send "DONE" for previous unload */
+ bnx2x_fw_command(bp,
+ DRV_MSG_CODE_UNLOAD_DONE, 0);
+
+ /* unload UNDI on port 1 */
+ bp->pf_num = 1;
+ bp->fw_seq =
+ (SHMEM_RD(bp, func_mb[bp->pf_num].drv_mb_header) &
+ DRV_MSG_SEQ_NUMBER_MASK);
+ reset_code = DRV_MSG_CODE_UNLOAD_REQ_WOL_DIS;
+
+ bnx2x_fw_command(bp, reset_code, 0);
+ }
+
+ /* now it's safe to release the lock */
+ bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_UNDI);
+
+ bnx2x_undi_int_disable(bp);
+ port = BP_PORT(bp);
+
+ /* close input traffic and wait for it */
+ /* Do not rcv packets to BRB */
+ REG_WR(bp, (port ? NIG_REG_LLH1_BRB1_DRV_MASK :
+ NIG_REG_LLH0_BRB1_DRV_MASK), 0x0);
+ /* Do not direct rcv packets that are not for MCP to
+ * the BRB */
+ REG_WR(bp, (port ? NIG_REG_LLH1_BRB1_NOT_MCP :
+ NIG_REG_LLH0_BRB1_NOT_MCP), 0x0);
+ /* clear AEU */
+ REG_WR(bp, (port ? MISC_REG_AEU_MASK_ATTN_FUNC_1 :
+ MISC_REG_AEU_MASK_ATTN_FUNC_0), 0);
+ msleep(10);
+
+ /* save NIG port swap info */
+ swap_val = REG_RD(bp, NIG_REG_PORT_SWAP);
+ swap_en = REG_RD(bp, NIG_REG_STRAP_OVERRIDE);
+ /* reset device */
+ REG_WR(bp,
+ GRCBASE_MISC + MISC_REGISTERS_RESET_REG_1_CLEAR,
+ 0xd3ffffff);
+
+ value = 0x1400;
+ if (CHIP_IS_E3(bp)) {
+ value |= MISC_REGISTERS_RESET_REG_2_MSTAT0;
+ value |= MISC_REGISTERS_RESET_REG_2_MSTAT1;
+ }
+
+ REG_WR(bp,
+ GRCBASE_MISC + MISC_REGISTERS_RESET_REG_2_CLEAR,
+ value);
+
+ /* take the NIG out of reset and restore swap values */
+ REG_WR(bp,
+ GRCBASE_MISC + MISC_REGISTERS_RESET_REG_1_SET,
+ MISC_REGISTERS_RESET_REG_1_RST_NIG);
+ REG_WR(bp, NIG_REG_PORT_SWAP, swap_val);
+ REG_WR(bp, NIG_REG_STRAP_OVERRIDE, swap_en);
+
+ /* send unload done to the MCP */
+ bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_DONE, 0);
+
+ /* restore our func and fw_seq */
+ bp->pf_num = orig_pf_num;
+ bp->fw_seq =
+ (SHMEM_RD(bp, func_mb[bp->pf_num].drv_mb_header) &
+ DRV_MSG_SEQ_NUMBER_MASK);
+ } else
+ bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_UNDI);
+ }
+}
+
+static void __devinit bnx2x_get_common_hwinfo(struct bnx2x *bp)
+{
+ u32 val, val2, val3, val4, id;
+ u16 pmc;
+
+ /* Get the chip revision id and number. */
+ /* chip num:16-31, rev:12-15, metal:4-11, bond_id:0-3 */
+ val = REG_RD(bp, MISC_REG_CHIP_NUM);
+ id = ((val & 0xffff) << 16);
+ val = REG_RD(bp, MISC_REG_CHIP_REV);
+ id |= ((val & 0xf) << 12);
+ val = REG_RD(bp, MISC_REG_CHIP_METAL);
+ id |= ((val & 0xff) << 4);
+ val = REG_RD(bp, MISC_REG_BOND_ID);
+ id |= (val & 0xf);
+ bp->common.chip_id = id;
+
+ /* Set doorbell size */
+ bp->db_size = (1 << BNX2X_DB_SHIFT);
+
+ if (!CHIP_IS_E1x(bp)) {
+ val = REG_RD(bp, MISC_REG_PORT4MODE_EN_OVWR);
+ if ((val & 1) == 0)
+ val = REG_RD(bp, MISC_REG_PORT4MODE_EN);
+ else
+ val = (val >> 1) & 1;
+ BNX2X_DEV_INFO("chip is in %s\n", val ? "4_PORT_MODE" :
+ "2_PORT_MODE");
+ bp->common.chip_port_mode = val ? CHIP_4_PORT_MODE :
+ CHIP_2_PORT_MODE;
+
+ if (CHIP_MODE_IS_4_PORT(bp))
+ bp->pfid = (bp->pf_num >> 1); /* 0..3 */
+ else
+ bp->pfid = (bp->pf_num & 0x6); /* 0, 2, 4, 6 */
+ } else {
+ bp->common.chip_port_mode = CHIP_PORT_MODE_NONE; /* N/A */
+ bp->pfid = bp->pf_num; /* 0..7 */
+ }
+
+ bp->link_params.chip_id = bp->common.chip_id;
+ BNX2X_DEV_INFO("chip ID is 0x%x\n", id);
+
+ val = (REG_RD(bp, 0x2874) & 0x55);
+ if ((bp->common.chip_id & 0x1) ||
+ (CHIP_IS_E1(bp) && val) || (CHIP_IS_E1H(bp) && (val == 0x55))) {
+ bp->flags |= ONE_PORT_FLAG;
+ BNX2X_DEV_INFO("single port device\n");
+ }
+
+ val = REG_RD(bp, MCP_REG_MCPR_NVM_CFG4);
+ bp->common.flash_size = (BNX2X_NVRAM_1MB_SIZE <<
+ (val & MCPR_NVM_CFG4_FLASH_SIZE));
+ BNX2X_DEV_INFO("flash_size 0x%x (%d)\n",
+ bp->common.flash_size, bp->common.flash_size);
+
+ bnx2x_init_shmem(bp);
+
+
+
+ bp->common.shmem2_base = REG_RD(bp, (BP_PATH(bp) ?
+ MISC_REG_GENERIC_CR_1 :
+ MISC_REG_GENERIC_CR_0));
+
+ bp->link_params.shmem_base = bp->common.shmem_base;
+ bp->link_params.shmem2_base = bp->common.shmem2_base;
+ BNX2X_DEV_INFO("shmem offset 0x%x shmem2 offset 0x%x\n",
+ bp->common.shmem_base, bp->common.shmem2_base);
+
+ if (!bp->common.shmem_base) {
+ BNX2X_DEV_INFO("MCP not active\n");
+ bp->flags |= NO_MCP_FLAG;
+ return;
+ }
+
+ bp->common.hw_config = SHMEM_RD(bp, dev_info.shared_hw_config.config);
+ BNX2X_DEV_INFO("hw_config 0x%08x\n", bp->common.hw_config);
+
+ bp->link_params.hw_led_mode = ((bp->common.hw_config &
+ SHARED_HW_CFG_LED_MODE_MASK) >>
+ SHARED_HW_CFG_LED_MODE_SHIFT);
+
+ bp->link_params.feature_config_flags = 0;
+ val = SHMEM_RD(bp, dev_info.shared_feature_config.config);
+ if (val & SHARED_FEAT_CFG_OVERRIDE_PREEMPHASIS_CFG_ENABLED)
+ bp->link_params.feature_config_flags |=
+ FEATURE_CONFIG_OVERRIDE_PREEMPHASIS_ENABLED;
+ else
+ bp->link_params.feature_config_flags &=
+ ~FEATURE_CONFIG_OVERRIDE_PREEMPHASIS_ENABLED;
+
+ val = SHMEM_RD(bp, dev_info.bc_rev) >> 8;
+ bp->common.bc_ver = val;
+ BNX2X_DEV_INFO("bc_ver %X\n", val);
+ if (val < BNX2X_BC_VER) {
+ /* for now only warn
+ * later we might need to enforce this */
+ BNX2X_ERR("This driver needs bc_ver %X but found %X, "
+ "please upgrade BC\n", BNX2X_BC_VER, val);
+ }
+ bp->link_params.feature_config_flags |=
+ (val >= REQ_BC_VER_4_VRFY_FIRST_PHY_OPT_MDL) ?
+ FEATURE_CONFIG_BC_SUPPORTS_OPT_MDL_VRFY : 0;
+
+ bp->link_params.feature_config_flags |=
+ (val >= REQ_BC_VER_4_VRFY_SPECIFIC_PHY_OPT_MDL) ?
+ FEATURE_CONFIG_BC_SUPPORTS_DUAL_PHY_OPT_MDL_VRFY : 0;
+
+ bp->link_params.feature_config_flags |=
+ (val >= REQ_BC_VER_4_SFP_TX_DISABLE_SUPPORTED) ?
+ FEATURE_CONFIG_BC_SUPPORTS_SFP_TX_DISABLED : 0;
+
+ pci_read_config_word(bp->pdev, bp->pm_cap + PCI_PM_PMC, &pmc);
+ bp->flags |= (pmc & PCI_PM_CAP_PME_D3cold) ? 0 : NO_WOL_FLAG;
+
+ BNX2X_DEV_INFO("%sWoL capable\n",
+ (bp->flags & NO_WOL_FLAG) ? "not " : "");
+
+ val = SHMEM_RD(bp, dev_info.shared_hw_config.part_num);
+ val2 = SHMEM_RD(bp, dev_info.shared_hw_config.part_num[4]);
+ val3 = SHMEM_RD(bp, dev_info.shared_hw_config.part_num[8]);
+ val4 = SHMEM_RD(bp, dev_info.shared_hw_config.part_num[12]);
+
+ dev_info(&bp->pdev->dev, "part number %X-%X-%X-%X\n",
+ val, val2, val3, val4);
+}
+
+#define IGU_FID(val) GET_FIELD((val), IGU_REG_MAPPING_MEMORY_FID)
+#define IGU_VEC(val) GET_FIELD((val), IGU_REG_MAPPING_MEMORY_VECTOR)
+
+static void __devinit bnx2x_get_igu_cam_info(struct bnx2x *bp)
+{
+ int pfid = BP_FUNC(bp);
+ int vn = BP_E1HVN(bp);
+ int igu_sb_id;
+ u32 val;
+ u8 fid, igu_sb_cnt = 0;
+
+ bp->igu_base_sb = 0xff;
+ if (CHIP_INT_MODE_IS_BC(bp)) {
+ igu_sb_cnt = bp->igu_sb_cnt;
+ bp->igu_base_sb = (CHIP_MODE_IS_4_PORT(bp) ? pfid : vn) *
+ FP_SB_MAX_E1x;
+
+ bp->igu_dsb_id = E1HVN_MAX * FP_SB_MAX_E1x +
+ (CHIP_MODE_IS_4_PORT(bp) ? pfid : vn);
+
+ return;
+ }
+
+ /* IGU in normal mode - read CAM */
+ for (igu_sb_id = 0; igu_sb_id < IGU_REG_MAPPING_MEMORY_SIZE;
+ igu_sb_id++) {
+ val = REG_RD(bp, IGU_REG_MAPPING_MEMORY + igu_sb_id * 4);
+ if (!(val & IGU_REG_MAPPING_MEMORY_VALID))
+ continue;
+ fid = IGU_FID(val);
+ if ((fid & IGU_FID_ENCODE_IS_PF)) {
+ if ((fid & IGU_FID_PF_NUM_MASK) != pfid)
+ continue;
+ if (IGU_VEC(val) == 0)
+ /* default status block */
+ bp->igu_dsb_id = igu_sb_id;
+ else {
+ if (bp->igu_base_sb == 0xff)
+ bp->igu_base_sb = igu_sb_id;
+ igu_sb_cnt++;
+ }
+ }
+ }
+
+#ifdef CONFIG_PCI_MSI
+ /*
+ * It's expected that number of CAM entries for this functions is equal
+ * to the number evaluated based on the MSI-X table size. We want a
+ * harsh warning if these values are different!
+ */
+ WARN_ON(bp->igu_sb_cnt != igu_sb_cnt);
+#endif
+
+ if (igu_sb_cnt == 0)
+ BNX2X_ERR("CAM configuration error\n");
+}
+
+static void __devinit bnx2x_link_settings_supported(struct bnx2x *bp,
+ u32 switch_cfg)
+{
+ int cfg_size = 0, idx, port = BP_PORT(bp);
+
+ /* Aggregation of supported attributes of all external phys */
+ bp->port.supported[0] = 0;
+ bp->port.supported[1] = 0;
+ switch (bp->link_params.num_phys) {
+ case 1:
+ bp->port.supported[0] = bp->link_params.phy[INT_PHY].supported;
+ cfg_size = 1;
+ break;
+ case 2:
+ bp->port.supported[0] = bp->link_params.phy[EXT_PHY1].supported;
+ cfg_size = 1;
+ break;
+ case 3:
+ if (bp->link_params.multi_phy_config &
+ PORT_HW_CFG_PHY_SWAPPED_ENABLED) {
+ bp->port.supported[1] =
+ bp->link_params.phy[EXT_PHY1].supported;
+ bp->port.supported[0] =
+ bp->link_params.phy[EXT_PHY2].supported;
+ } else {
+ bp->port.supported[0] =
+ bp->link_params.phy[EXT_PHY1].supported;
+ bp->port.supported[1] =
+ bp->link_params.phy[EXT_PHY2].supported;
+ }
+ cfg_size = 2;
+ break;
+ }
+
+ if (!(bp->port.supported[0] || bp->port.supported[1])) {
+ BNX2X_ERR("NVRAM config error. BAD phy config."
+ "PHY1 config 0x%x, PHY2 config 0x%x\n",
+ SHMEM_RD(bp,
+ dev_info.port_hw_config[port].external_phy_config),
+ SHMEM_RD(bp,
+ dev_info.port_hw_config[port].external_phy_config2));
+ return;
+ }
+
+ if (CHIP_IS_E3(bp))
+ bp->port.phy_addr = REG_RD(bp, MISC_REG_WC0_CTRL_PHY_ADDR);
+ else {
+ switch (switch_cfg) {
+ case SWITCH_CFG_1G:
+ bp->port.phy_addr = REG_RD(
+ bp, NIG_REG_SERDES0_CTRL_PHY_ADDR + port*0x10);
+ break;
+ case SWITCH_CFG_10G:
+ bp->port.phy_addr = REG_RD(
+ bp, NIG_REG_XGXS0_CTRL_PHY_ADDR + port*0x18);
+ break;
+ default:
+ BNX2X_ERR("BAD switch_cfg link_config 0x%x\n",
+ bp->port.link_config[0]);
+ return;
+ }
+ }
+ BNX2X_DEV_INFO("phy_addr 0x%x\n", bp->port.phy_addr);
+ /* mask what we support according to speed_cap_mask per configuration */
+ for (idx = 0; idx < cfg_size; idx++) {
+ if (!(bp->link_params.speed_cap_mask[idx] &
+ PORT_HW_CFG_SPEED_CAPABILITY_D0_10M_HALF))
+ bp->port.supported[idx] &= ~SUPPORTED_10baseT_Half;
+
+ if (!(bp->link_params.speed_cap_mask[idx] &
+ PORT_HW_CFG_SPEED_CAPABILITY_D0_10M_FULL))
+ bp->port.supported[idx] &= ~SUPPORTED_10baseT_Full;
+
+ if (!(bp->link_params.speed_cap_mask[idx] &
+ PORT_HW_CFG_SPEED_CAPABILITY_D0_100M_HALF))
+ bp->port.supported[idx] &= ~SUPPORTED_100baseT_Half;
+
+ if (!(bp->link_params.speed_cap_mask[idx] &
+ PORT_HW_CFG_SPEED_CAPABILITY_D0_100M_FULL))
+ bp->port.supported[idx] &= ~SUPPORTED_100baseT_Full;
+
+ if (!(bp->link_params.speed_cap_mask[idx] &
+ PORT_HW_CFG_SPEED_CAPABILITY_D0_1G))
+ bp->port.supported[idx] &= ~(SUPPORTED_1000baseT_Half |
+ SUPPORTED_1000baseT_Full);
+
+ if (!(bp->link_params.speed_cap_mask[idx] &
+ PORT_HW_CFG_SPEED_CAPABILITY_D0_2_5G))
+ bp->port.supported[idx] &= ~SUPPORTED_2500baseX_Full;
+
+ if (!(bp->link_params.speed_cap_mask[idx] &
+ PORT_HW_CFG_SPEED_CAPABILITY_D0_10G))
+ bp->port.supported[idx] &= ~SUPPORTED_10000baseT_Full;
+
+ }
+
+ BNX2X_DEV_INFO("supported 0x%x 0x%x\n", bp->port.supported[0],
+ bp->port.supported[1]);
+}
+
+static void __devinit bnx2x_link_settings_requested(struct bnx2x *bp)
+{
+ u32 link_config, idx, cfg_size = 0;
+ bp->port.advertising[0] = 0;
+ bp->port.advertising[1] = 0;
+ switch (bp->link_params.num_phys) {
+ case 1:
+ case 2:
+ cfg_size = 1;
+ break;
+ case 3:
+ cfg_size = 2;
+ break;
+ }
+ for (idx = 0; idx < cfg_size; idx++) {
+ bp->link_params.req_duplex[idx] = DUPLEX_FULL;
+ link_config = bp->port.link_config[idx];
+ switch (link_config & PORT_FEATURE_LINK_SPEED_MASK) {
+ case PORT_FEATURE_LINK_SPEED_AUTO:
+ if (bp->port.supported[idx] & SUPPORTED_Autoneg) {
+ bp->link_params.req_line_speed[idx] =
+ SPEED_AUTO_NEG;
+ bp->port.advertising[idx] |=
+ bp->port.supported[idx];
+ } else {
+ /* force 10G, no AN */
+ bp->link_params.req_line_speed[idx] =
+ SPEED_10000;
+ bp->port.advertising[idx] |=
+ (ADVERTISED_10000baseT_Full |
+ ADVERTISED_FIBRE);
+ continue;
+ }
+ break;
+
+ case PORT_FEATURE_LINK_SPEED_10M_FULL:
+ if (bp->port.supported[idx] & SUPPORTED_10baseT_Full) {
+ bp->link_params.req_line_speed[idx] =
+ SPEED_10;
+ bp->port.advertising[idx] |=
+ (ADVERTISED_10baseT_Full |
+ ADVERTISED_TP);
+ } else {
+ BNX2X_ERR("NVRAM config error. "
+ "Invalid link_config 0x%x"
+ " speed_cap_mask 0x%x\n",
+ link_config,
+ bp->link_params.speed_cap_mask[idx]);
+ return;
+ }
+ break;
+
+ case PORT_FEATURE_LINK_SPEED_10M_HALF:
+ if (bp->port.supported[idx] & SUPPORTED_10baseT_Half) {
+ bp->link_params.req_line_speed[idx] =
+ SPEED_10;
+ bp->link_params.req_duplex[idx] =
+ DUPLEX_HALF;
+ bp->port.advertising[idx] |=
+ (ADVERTISED_10baseT_Half |
+ ADVERTISED_TP);
+ } else {
+ BNX2X_ERR("NVRAM config error. "
+ "Invalid link_config 0x%x"
+ " speed_cap_mask 0x%x\n",
+ link_config,
+ bp->link_params.speed_cap_mask[idx]);
+ return;
+ }
+ break;
+
+ case PORT_FEATURE_LINK_SPEED_100M_FULL:
+ if (bp->port.supported[idx] &
+ SUPPORTED_100baseT_Full) {
+ bp->link_params.req_line_speed[idx] =
+ SPEED_100;
+ bp->port.advertising[idx] |=
+ (ADVERTISED_100baseT_Full |
+ ADVERTISED_TP);
+ } else {
+ BNX2X_ERR("NVRAM config error. "
+ "Invalid link_config 0x%x"
+ " speed_cap_mask 0x%x\n",
+ link_config,
+ bp->link_params.speed_cap_mask[idx]);
+ return;
+ }
+ break;
+
+ case PORT_FEATURE_LINK_SPEED_100M_HALF:
+ if (bp->port.supported[idx] &
+ SUPPORTED_100baseT_Half) {
+ bp->link_params.req_line_speed[idx] =
+ SPEED_100;
+ bp->link_params.req_duplex[idx] =
+ DUPLEX_HALF;
+ bp->port.advertising[idx] |=
+ (ADVERTISED_100baseT_Half |
+ ADVERTISED_TP);
+ } else {
+ BNX2X_ERR("NVRAM config error. "
+ "Invalid link_config 0x%x"
+ " speed_cap_mask 0x%x\n",
+ link_config,
+ bp->link_params.speed_cap_mask[idx]);
+ return;
+ }
+ break;
+
+ case PORT_FEATURE_LINK_SPEED_1G:
+ if (bp->port.supported[idx] &
+ SUPPORTED_1000baseT_Full) {
+ bp->link_params.req_line_speed[idx] =
+ SPEED_1000;
+ bp->port.advertising[idx] |=
+ (ADVERTISED_1000baseT_Full |
+ ADVERTISED_TP);
+ } else {
+ BNX2X_ERR("NVRAM config error. "
+ "Invalid link_config 0x%x"
+ " speed_cap_mask 0x%x\n",
+ link_config,
+ bp->link_params.speed_cap_mask[idx]);
+ return;
+ }
+ break;
+
+ case PORT_FEATURE_LINK_SPEED_2_5G:
+ if (bp->port.supported[idx] &
+ SUPPORTED_2500baseX_Full) {
+ bp->link_params.req_line_speed[idx] =
+ SPEED_2500;
+ bp->port.advertising[idx] |=
+ (ADVERTISED_2500baseX_Full |
+ ADVERTISED_TP);
+ } else {
+ BNX2X_ERR("NVRAM config error. "
+ "Invalid link_config 0x%x"
+ " speed_cap_mask 0x%x\n",
+ link_config,
+ bp->link_params.speed_cap_mask[idx]);
+ return;
+ }
+ break;
+
+ case PORT_FEATURE_LINK_SPEED_10G_CX4:
+ if (bp->port.supported[idx] &
+ SUPPORTED_10000baseT_Full) {
+ bp->link_params.req_line_speed[idx] =
+ SPEED_10000;
+ bp->port.advertising[idx] |=
+ (ADVERTISED_10000baseT_Full |
+ ADVERTISED_FIBRE);
+ } else {
+ BNX2X_ERR("NVRAM config error. "
+ "Invalid link_config 0x%x"
+ " speed_cap_mask 0x%x\n",
+ link_config,
+ bp->link_params.speed_cap_mask[idx]);
+ return;
+ }
+ break;
+ case PORT_FEATURE_LINK_SPEED_20G:
+ bp->link_params.req_line_speed[idx] = SPEED_20000;
+
+ break;
+ default:
+ BNX2X_ERR("NVRAM config error. "
+ "BAD link speed link_config 0x%x\n",
+ link_config);
+ bp->link_params.req_line_speed[idx] =
+ SPEED_AUTO_NEG;
+ bp->port.advertising[idx] =
+ bp->port.supported[idx];
+ break;
+ }
+
+ bp->link_params.req_flow_ctrl[idx] = (link_config &
+ PORT_FEATURE_FLOW_CONTROL_MASK);
+ if ((bp->link_params.req_flow_ctrl[idx] ==
+ BNX2X_FLOW_CTRL_AUTO) &&
+ !(bp->port.supported[idx] & SUPPORTED_Autoneg)) {
+ bp->link_params.req_flow_ctrl[idx] =
+ BNX2X_FLOW_CTRL_NONE;
+ }
+
+ BNX2X_DEV_INFO("req_line_speed %d req_duplex %d req_flow_ctrl"
+ " 0x%x advertising 0x%x\n",
+ bp->link_params.req_line_speed[idx],
+ bp->link_params.req_duplex[idx],
+ bp->link_params.req_flow_ctrl[idx],
+ bp->port.advertising[idx]);
+ }
+}
+
+static void __devinit bnx2x_set_mac_buf(u8 *mac_buf, u32 mac_lo, u16 mac_hi)
+{
+ mac_hi = cpu_to_be16(mac_hi);
+ mac_lo = cpu_to_be32(mac_lo);
+ memcpy(mac_buf, &mac_hi, sizeof(mac_hi));
+ memcpy(mac_buf + sizeof(mac_hi), &mac_lo, sizeof(mac_lo));
+}
+
+static void __devinit bnx2x_get_port_hwinfo(struct bnx2x *bp)
+{
+ int port = BP_PORT(bp);
+ u32 config;
+ u32 ext_phy_type, ext_phy_config;
+
+ bp->link_params.bp = bp;
+ bp->link_params.port = port;
+
+ bp->link_params.lane_config =
+ SHMEM_RD(bp, dev_info.port_hw_config[port].lane_config);
+
+ bp->link_params.speed_cap_mask[0] =
+ SHMEM_RD(bp,
+ dev_info.port_hw_config[port].speed_capability_mask);
+ bp->link_params.speed_cap_mask[1] =
+ SHMEM_RD(bp,
+ dev_info.port_hw_config[port].speed_capability_mask2);
+ bp->port.link_config[0] =
+ SHMEM_RD(bp, dev_info.port_feature_config[port].link_config);
+
+ bp->port.link_config[1] =
+ SHMEM_RD(bp, dev_info.port_feature_config[port].link_config2);
+
+ bp->link_params.multi_phy_config =
+ SHMEM_RD(bp, dev_info.port_hw_config[port].multi_phy_config);
+ /* If the device is capable of WoL, set the default state according
+ * to the HW
+ */
+ config = SHMEM_RD(bp, dev_info.port_feature_config[port].config);
+ bp->wol = (!(bp->flags & NO_WOL_FLAG) &&
+ (config & PORT_FEATURE_WOL_ENABLED));
+
+ BNX2X_DEV_INFO("lane_config 0x%08x "
+ "speed_cap_mask0 0x%08x link_config0 0x%08x\n",
+ bp->link_params.lane_config,
+ bp->link_params.speed_cap_mask[0],
+ bp->port.link_config[0]);
+
+ bp->link_params.switch_cfg = (bp->port.link_config[0] &
+ PORT_FEATURE_CONNECTED_SWITCH_MASK);
+ bnx2x_phy_probe(&bp->link_params);
+ bnx2x_link_settings_supported(bp, bp->link_params.switch_cfg);
+
+ bnx2x_link_settings_requested(bp);
+
+ /*
+ * If connected directly, work with the internal PHY, otherwise, work
+ * with the external PHY
+ */
+ ext_phy_config =
+ SHMEM_RD(bp,
+ dev_info.port_hw_config[port].external_phy_config);
+ ext_phy_type = XGXS_EXT_PHY_TYPE(ext_phy_config);
+ if (ext_phy_type == PORT_HW_CFG_XGXS_EXT_PHY_TYPE_DIRECT)
+ bp->mdio.prtad = bp->port.phy_addr;
+
+ else if ((ext_phy_type != PORT_HW_CFG_XGXS_EXT_PHY_TYPE_FAILURE) &&
+ (ext_phy_type != PORT_HW_CFG_XGXS_EXT_PHY_TYPE_NOT_CONN))
+ bp->mdio.prtad =
+ XGXS_EXT_PHY_ADDR(ext_phy_config);
+
+ /*
+ * Check if hw lock is required to access MDC/MDIO bus to the PHY(s)
+ * In MF mode, it is set to cover self test cases
+ */
+ if (IS_MF(bp))
+ bp->port.need_hw_lock = 1;
+ else
+ bp->port.need_hw_lock = bnx2x_hw_lock_required(bp,
+ bp->common.shmem_base,
+ bp->common.shmem2_base);
+}
+
+#ifdef BCM_CNIC
+static void __devinit bnx2x_get_cnic_info(struct bnx2x *bp)
+{
+ int port = BP_PORT(bp);
+ int func = BP_ABS_FUNC(bp);
+
+ u32 max_iscsi_conn = FW_ENCODE_32BIT_PATTERN ^ SHMEM_RD(bp,
+ drv_lic_key[port].max_iscsi_conn);
+ u32 max_fcoe_conn = FW_ENCODE_32BIT_PATTERN ^ SHMEM_RD(bp,
+ drv_lic_key[port].max_fcoe_conn);
+
+ /* Get the number of maximum allowed iSCSI and FCoE connections */
+ bp->cnic_eth_dev.max_iscsi_conn =
+ (max_iscsi_conn & BNX2X_MAX_ISCSI_INIT_CONN_MASK) >>
+ BNX2X_MAX_ISCSI_INIT_CONN_SHIFT;
+
+ bp->cnic_eth_dev.max_fcoe_conn =
+ (max_fcoe_conn & BNX2X_MAX_FCOE_INIT_CONN_MASK) >>
+ BNX2X_MAX_FCOE_INIT_CONN_SHIFT;
+
+ /* Read the WWN: */
+ if (!IS_MF(bp)) {
+ /* Port info */
+ bp->cnic_eth_dev.fcoe_wwn_port_name_hi =
+ SHMEM_RD(bp,
+ dev_info.port_hw_config[port].
+ fcoe_wwn_port_name_upper);
+ bp->cnic_eth_dev.fcoe_wwn_port_name_lo =
+ SHMEM_RD(bp,
+ dev_info.port_hw_config[port].
+ fcoe_wwn_port_name_lower);
+
+ /* Node info */
+ bp->cnic_eth_dev.fcoe_wwn_node_name_hi =
+ SHMEM_RD(bp,
+ dev_info.port_hw_config[port].
+ fcoe_wwn_node_name_upper);
+ bp->cnic_eth_dev.fcoe_wwn_node_name_lo =
+ SHMEM_RD(bp,
+ dev_info.port_hw_config[port].
+ fcoe_wwn_node_name_lower);
+ } else if (!IS_MF_SD(bp)) {
+ u32 cfg = MF_CFG_RD(bp, func_ext_config[func].func_cfg);
+
+ /*
+ * Read the WWN info only if the FCoE feature is enabled for
+ * this function.
+ */
+ if (cfg & MACP_FUNC_CFG_FLAGS_FCOE_OFFLOAD) {
+ /* Port info */
+ bp->cnic_eth_dev.fcoe_wwn_port_name_hi =
+ MF_CFG_RD(bp, func_ext_config[func].
+ fcoe_wwn_port_name_upper);
+ bp->cnic_eth_dev.fcoe_wwn_port_name_lo =
+ MF_CFG_RD(bp, func_ext_config[func].
+ fcoe_wwn_port_name_lower);
+
+ /* Node info */
+ bp->cnic_eth_dev.fcoe_wwn_node_name_hi =
+ MF_CFG_RD(bp, func_ext_config[func].
+ fcoe_wwn_node_name_upper);
+ bp->cnic_eth_dev.fcoe_wwn_node_name_lo =
+ MF_CFG_RD(bp, func_ext_config[func].
+ fcoe_wwn_node_name_lower);
+ }
+ }
+
+ BNX2X_DEV_INFO("max_iscsi_conn 0x%x max_fcoe_conn 0x%x\n",
+ bp->cnic_eth_dev.max_iscsi_conn,
+ bp->cnic_eth_dev.max_fcoe_conn);
+
+ /*
+ * If maximum allowed number of connections is zero -
+ * disable the feature.
+ */
+ if (!bp->cnic_eth_dev.max_iscsi_conn)
+ bp->flags |= NO_ISCSI_OOO_FLAG | NO_ISCSI_FLAG;
+
+ if (!bp->cnic_eth_dev.max_fcoe_conn)
+ bp->flags |= NO_FCOE_FLAG;
+}
+#endif
+
+static void __devinit bnx2x_get_mac_hwinfo(struct bnx2x *bp)
+{
+ u32 val, val2;
+ int func = BP_ABS_FUNC(bp);
+ int port = BP_PORT(bp);
+#ifdef BCM_CNIC
+ u8 *iscsi_mac = bp->cnic_eth_dev.iscsi_mac;
+ u8 *fip_mac = bp->fip_mac;
+#endif
+
+ /* Zero primary MAC configuration */
+ memset(bp->dev->dev_addr, 0, ETH_ALEN);
+
+ if (BP_NOMCP(bp)) {
+ BNX2X_ERROR("warning: random MAC workaround active\n");
+ random_ether_addr(bp->dev->dev_addr);
+ } else if (IS_MF(bp)) {
+ val2 = MF_CFG_RD(bp, func_mf_config[func].mac_upper);
+ val = MF_CFG_RD(bp, func_mf_config[func].mac_lower);
+ if ((val2 != FUNC_MF_CFG_UPPERMAC_DEFAULT) &&
+ (val != FUNC_MF_CFG_LOWERMAC_DEFAULT))
+ bnx2x_set_mac_buf(bp->dev->dev_addr, val, val2);
+
+#ifdef BCM_CNIC
+ /* iSCSI and FCoE NPAR MACs: if there is no either iSCSI or
+ * FCoE MAC then the appropriate feature should be disabled.
+ */
+ if (IS_MF_SI(bp)) {
+ u32 cfg = MF_CFG_RD(bp, func_ext_config[func].func_cfg);
+ if (cfg & MACP_FUNC_CFG_FLAGS_ISCSI_OFFLOAD) {
+ val2 = MF_CFG_RD(bp, func_ext_config[func].
+ iscsi_mac_addr_upper);
+ val = MF_CFG_RD(bp, func_ext_config[func].
+ iscsi_mac_addr_lower);
+ bnx2x_set_mac_buf(iscsi_mac, val, val2);
+ BNX2X_DEV_INFO("Read iSCSI MAC: %pM\n",
+ iscsi_mac);
+ } else
+ bp->flags |= NO_ISCSI_OOO_FLAG | NO_ISCSI_FLAG;
+
+ if (cfg & MACP_FUNC_CFG_FLAGS_FCOE_OFFLOAD) {
+ val2 = MF_CFG_RD(bp, func_ext_config[func].
+ fcoe_mac_addr_upper);
+ val = MF_CFG_RD(bp, func_ext_config[func].
+ fcoe_mac_addr_lower);
+ bnx2x_set_mac_buf(fip_mac, val, val2);
+ BNX2X_DEV_INFO("Read FCoE L2 MAC to %pM\n",
+ fip_mac);
+
+ } else
+ bp->flags |= NO_FCOE_FLAG;
+ }
+#endif
+ } else {
+ /* in SF read MACs from port configuration */
+ val2 = SHMEM_RD(bp, dev_info.port_hw_config[port].mac_upper);
+ val = SHMEM_RD(bp, dev_info.port_hw_config[port].mac_lower);
+ bnx2x_set_mac_buf(bp->dev->dev_addr, val, val2);
+
+#ifdef BCM_CNIC
+ val2 = SHMEM_RD(bp, dev_info.port_hw_config[port].
+ iscsi_mac_upper);
+ val = SHMEM_RD(bp, dev_info.port_hw_config[port].
+ iscsi_mac_lower);
+ bnx2x_set_mac_buf(iscsi_mac, val, val2);
+
+ val2 = SHMEM_RD(bp, dev_info.port_hw_config[port].
+ fcoe_fip_mac_upper);
+ val = SHMEM_RD(bp, dev_info.port_hw_config[port].
+ fcoe_fip_mac_lower);
+ bnx2x_set_mac_buf(fip_mac, val, val2);
+#endif
+ }
+
+ memcpy(bp->link_params.mac_addr, bp->dev->dev_addr, ETH_ALEN);
+ memcpy(bp->dev->perm_addr, bp->dev->dev_addr, ETH_ALEN);
+
+#ifdef BCM_CNIC
+ /* Set the FCoE MAC in MF_SD mode */
+ if (!CHIP_IS_E1x(bp) && IS_MF_SD(bp))
+ memcpy(fip_mac, bp->dev->dev_addr, ETH_ALEN);
+
+ /* Disable iSCSI if MAC configuration is
+ * invalid.
+ */
+ if (!is_valid_ether_addr(iscsi_mac)) {
+ bp->flags |= NO_ISCSI_FLAG;
+ memset(iscsi_mac, 0, ETH_ALEN);
+ }
+
+ /* Disable FCoE if MAC configuration is
+ * invalid.
+ */
+ if (!is_valid_ether_addr(fip_mac)) {
+ bp->flags |= NO_FCOE_FLAG;
+ memset(bp->fip_mac, 0, ETH_ALEN);
+ }
+#endif
+
+ if (!is_valid_ether_addr(bp->dev->dev_addr))
+ dev_err(&bp->pdev->dev,
+ "bad Ethernet MAC address configuration: "
+ "%pM, change it manually before bringing up "
+ "the appropriate network interface\n",
+ bp->dev->dev_addr);
+}
+
+static int __devinit bnx2x_get_hwinfo(struct bnx2x *bp)
+{
+ int /*abs*/func = BP_ABS_FUNC(bp);
+ int vn;
+ u32 val = 0;
+ int rc = 0;
+
+ bnx2x_get_common_hwinfo(bp);
+
+ /*
+ * initialize IGU parameters
+ */
+ if (CHIP_IS_E1x(bp)) {
+ bp->common.int_block = INT_BLOCK_HC;
+
+ bp->igu_dsb_id = DEF_SB_IGU_ID;
+ bp->igu_base_sb = 0;
+ } else {
+ bp->common.int_block = INT_BLOCK_IGU;
+ val = REG_RD(bp, IGU_REG_BLOCK_CONFIGURATION);
+
+ if (val & IGU_BLOCK_CONFIGURATION_REG_BACKWARD_COMP_EN) {
+ int tout = 5000;
+
+ BNX2X_DEV_INFO("FORCING Normal Mode\n");
+
+ val &= ~(IGU_BLOCK_CONFIGURATION_REG_BACKWARD_COMP_EN);
+ REG_WR(bp, IGU_REG_BLOCK_CONFIGURATION, val);
+ REG_WR(bp, IGU_REG_RESET_MEMORIES, 0x7f);
+
+ while (tout && REG_RD(bp, IGU_REG_RESET_MEMORIES)) {
+ tout--;
+ usleep_range(1000, 1000);
+ }
+
+ if (REG_RD(bp, IGU_REG_RESET_MEMORIES)) {
+ dev_err(&bp->pdev->dev,
+ "FORCING Normal Mode failed!!!\n");
+ return -EPERM;
+ }
+ }
+
+ if (val & IGU_BLOCK_CONFIGURATION_REG_BACKWARD_COMP_EN) {
+ BNX2X_DEV_INFO("IGU Backward Compatible Mode\n");
+ bp->common.int_block |= INT_BLOCK_MODE_BW_COMP;
+ } else
+ BNX2X_DEV_INFO("IGU Normal Mode\n");
+
+ bnx2x_get_igu_cam_info(bp);
+
+ }
+
+ /*
+ * set base FW non-default (fast path) status block id, this value is
+ * used to initialize the fw_sb_id saved on the fp/queue structure to
+ * determine the id used by the FW.
+ */
+ if (CHIP_IS_E1x(bp))
+ bp->base_fw_ndsb = BP_PORT(bp) * FP_SB_MAX_E1x + BP_L_ID(bp);
+ else /*
+ * 57712 - we currently use one FW SB per IGU SB (Rx and Tx of
+ * the same queue are indicated on the same IGU SB). So we prefer
+ * FW and IGU SBs to be the same value.
+ */
+ bp->base_fw_ndsb = bp->igu_base_sb;
+
+ BNX2X_DEV_INFO("igu_dsb_id %d igu_base_sb %d igu_sb_cnt %d\n"
+ "base_fw_ndsb %d\n", bp->igu_dsb_id, bp->igu_base_sb,
+ bp->igu_sb_cnt, bp->base_fw_ndsb);
+
+ /*
+ * Initialize MF configuration
+ */
+
+ bp->mf_ov = 0;
+ bp->mf_mode = 0;
+ vn = BP_E1HVN(bp);
+
+ if (!CHIP_IS_E1(bp) && !BP_NOMCP(bp)) {
+ BNX2X_DEV_INFO("shmem2base 0x%x, size %d, mfcfg offset %d\n",
+ bp->common.shmem2_base, SHMEM2_RD(bp, size),
+ (u32)offsetof(struct shmem2_region, mf_cfg_addr));
+
+ if (SHMEM2_HAS(bp, mf_cfg_addr))
+ bp->common.mf_cfg_base = SHMEM2_RD(bp, mf_cfg_addr);
+ else
+ bp->common.mf_cfg_base = bp->common.shmem_base +
+ offsetof(struct shmem_region, func_mb) +
+ E1H_FUNC_MAX * sizeof(struct drv_func_mb);
+ /*
+ * get mf configuration:
+ * 1. existence of MF configuration
+ * 2. MAC address must be legal (check only upper bytes)
+ * for Switch-Independent mode;
+ * OVLAN must be legal for Switch-Dependent mode
+ * 3. SF_MODE configures specific MF mode
+ */
+ if (bp->common.mf_cfg_base != SHMEM_MF_CFG_ADDR_NONE) {
+ /* get mf configuration */
+ val = SHMEM_RD(bp,
+ dev_info.shared_feature_config.config);
+ val &= SHARED_FEAT_CFG_FORCE_SF_MODE_MASK;
+
+ switch (val) {
+ case SHARED_FEAT_CFG_FORCE_SF_MODE_SWITCH_INDEPT:
+ val = MF_CFG_RD(bp, func_mf_config[func].
+ mac_upper);
+ /* check for legal mac (upper bytes)*/
+ if (val != 0xffff) {
+ bp->mf_mode = MULTI_FUNCTION_SI;
+ bp->mf_config[vn] = MF_CFG_RD(bp,
+ func_mf_config[func].config);
+ } else
+ BNX2X_DEV_INFO("illegal MAC address "
+ "for SI\n");
+ break;
+ case SHARED_FEAT_CFG_FORCE_SF_MODE_MF_ALLOWED:
+ /* get OV configuration */
+ val = MF_CFG_RD(bp,
+ func_mf_config[FUNC_0].e1hov_tag);
+ val &= FUNC_MF_CFG_E1HOV_TAG_MASK;
+
+ if (val != FUNC_MF_CFG_E1HOV_TAG_DEFAULT) {
+ bp->mf_mode = MULTI_FUNCTION_SD;
+ bp->mf_config[vn] = MF_CFG_RD(bp,
+ func_mf_config[func].config);
+ } else
+ BNX2X_DEV_INFO("illegal OV for SD\n");
+ break;
+ default:
+ /* Unknown configuration: reset mf_config */
+ bp->mf_config[vn] = 0;
+ BNX2X_DEV_INFO("unkown MF mode 0x%x\n", val);
+ }
+ }
+
+ BNX2X_DEV_INFO("%s function mode\n",
+ IS_MF(bp) ? "multi" : "single");
+
+ switch (bp->mf_mode) {
+ case MULTI_FUNCTION_SD:
+ val = MF_CFG_RD(bp, func_mf_config[func].e1hov_tag) &
+ FUNC_MF_CFG_E1HOV_TAG_MASK;
+ if (val != FUNC_MF_CFG_E1HOV_TAG_DEFAULT) {
+ bp->mf_ov = val;
+ bp->path_has_ovlan = true;
+
+ BNX2X_DEV_INFO("MF OV for func %d is %d "
+ "(0x%04x)\n", func, bp->mf_ov,
+ bp->mf_ov);
+ } else {
+ dev_err(&bp->pdev->dev,
+ "No valid MF OV for func %d, "
+ "aborting\n", func);
+ return -EPERM;
+ }
+ break;
+ case MULTI_FUNCTION_SI:
+ BNX2X_DEV_INFO("func %d is in MF "
+ "switch-independent mode\n", func);
+ break;
+ default:
+ if (vn) {
+ dev_err(&bp->pdev->dev,
+ "VN %d is in a single function mode, "
+ "aborting\n", vn);
+ return -EPERM;
+ }
+ break;
+ }
+
+ /* check if other port on the path needs ovlan:
+ * Since MF configuration is shared between ports
+ * Possible mixed modes are only
+ * {SF, SI} {SF, SD} {SD, SF} {SI, SF}
+ */
+ if (CHIP_MODE_IS_4_PORT(bp) &&
+ !bp->path_has_ovlan &&
+ !IS_MF(bp) &&
+ bp->common.mf_cfg_base != SHMEM_MF_CFG_ADDR_NONE) {
+ u8 other_port = !BP_PORT(bp);
+ u8 other_func = BP_PATH(bp) + 2*other_port;
+ val = MF_CFG_RD(bp,
+ func_mf_config[other_func].e1hov_tag);
+ if (val != FUNC_MF_CFG_E1HOV_TAG_DEFAULT)
+ bp->path_has_ovlan = true;
+ }
+ }
+
+ /* adjust igu_sb_cnt to MF for E1x */
+ if (CHIP_IS_E1x(bp) && IS_MF(bp))
+ bp->igu_sb_cnt /= E1HVN_MAX;
+
+ /* port info */
+ bnx2x_get_port_hwinfo(bp);
+
+ if (!BP_NOMCP(bp)) {
+ bp->fw_seq =
+ (SHMEM_RD(bp, func_mb[BP_FW_MB_IDX(bp)].drv_mb_header) &
+ DRV_MSG_SEQ_NUMBER_MASK);
+ BNX2X_DEV_INFO("fw_seq 0x%08x\n", bp->fw_seq);
+ }
+
+ /* Get MAC addresses */
+ bnx2x_get_mac_hwinfo(bp);
+
+#ifdef BCM_CNIC
+ bnx2x_get_cnic_info(bp);
+#endif
+
+ /* Get current FW pulse sequence */
+ if (!BP_NOMCP(bp)) {
+ int mb_idx = BP_FW_MB_IDX(bp);
+
+ bp->fw_drv_pulse_wr_seq =
+ (SHMEM_RD(bp, func_mb[mb_idx].drv_pulse_mb) &
+ DRV_PULSE_SEQ_MASK);
+ BNX2X_DEV_INFO("drv_pulse 0x%x\n", bp->fw_drv_pulse_wr_seq);
+ }
+
+ return rc;
+}
+
+static void __devinit bnx2x_read_fwinfo(struct bnx2x *bp)
+{
+ int cnt, i, block_end, rodi;
+ char vpd_data[BNX2X_VPD_LEN+1];
+ char str_id_reg[VENDOR_ID_LEN+1];
+ char str_id_cap[VENDOR_ID_LEN+1];
+ u8 len;
+
+ cnt = pci_read_vpd(bp->pdev, 0, BNX2X_VPD_LEN, vpd_data);
+ memset(bp->fw_ver, 0, sizeof(bp->fw_ver));
+
+ if (cnt < BNX2X_VPD_LEN)
+ goto out_not_found;
+
+ i = pci_vpd_find_tag(vpd_data, 0, BNX2X_VPD_LEN,
+ PCI_VPD_LRDT_RO_DATA);
+ if (i < 0)
+ goto out_not_found;
+
+
+ block_end = i + PCI_VPD_LRDT_TAG_SIZE +
+ pci_vpd_lrdt_size(&vpd_data[i]);
+
+ i += PCI_VPD_LRDT_TAG_SIZE;
+
+ if (block_end > BNX2X_VPD_LEN)
+ goto out_not_found;
+
+ rodi = pci_vpd_find_info_keyword(vpd_data, i, block_end,
+ PCI_VPD_RO_KEYWORD_MFR_ID);
+ if (rodi < 0)
+ goto out_not_found;
+
+ len = pci_vpd_info_field_size(&vpd_data[rodi]);
+
+ if (len != VENDOR_ID_LEN)
+ goto out_not_found;
+
+ rodi += PCI_VPD_INFO_FLD_HDR_SIZE;
+
+ /* vendor specific info */
+ snprintf(str_id_reg, VENDOR_ID_LEN + 1, "%04x", PCI_VENDOR_ID_DELL);
+ snprintf(str_id_cap, VENDOR_ID_LEN + 1, "%04X", PCI_VENDOR_ID_DELL);
+ if (!strncmp(str_id_reg, &vpd_data[rodi], VENDOR_ID_LEN) ||
+ !strncmp(str_id_cap, &vpd_data[rodi], VENDOR_ID_LEN)) {
+
+ rodi = pci_vpd_find_info_keyword(vpd_data, i, block_end,
+ PCI_VPD_RO_KEYWORD_VENDOR0);
+ if (rodi >= 0) {
+ len = pci_vpd_info_field_size(&vpd_data[rodi]);
+
+ rodi += PCI_VPD_INFO_FLD_HDR_SIZE;
+
+ if (len < 32 && (len + rodi) <= BNX2X_VPD_LEN) {
+ memcpy(bp->fw_ver, &vpd_data[rodi], len);
+ bp->fw_ver[len] = ' ';
+ }
+ }
+ return;
+ }
+out_not_found:
+ return;
+}
+
+static void __devinit bnx2x_set_modes_bitmap(struct bnx2x *bp)
+{
+ u32 flags = 0;
+
+ if (CHIP_REV_IS_FPGA(bp))
+ SET_FLAGS(flags, MODE_FPGA);
+ else if (CHIP_REV_IS_EMUL(bp))
+ SET_FLAGS(flags, MODE_EMUL);
+ else
+ SET_FLAGS(flags, MODE_ASIC);
+
+ if (CHIP_MODE_IS_4_PORT(bp))
+ SET_FLAGS(flags, MODE_PORT4);
+ else
+ SET_FLAGS(flags, MODE_PORT2);
+
+ if (CHIP_IS_E2(bp))
+ SET_FLAGS(flags, MODE_E2);
+ else if (CHIP_IS_E3(bp)) {
+ SET_FLAGS(flags, MODE_E3);
+ if (CHIP_REV(bp) == CHIP_REV_Ax)
+ SET_FLAGS(flags, MODE_E3_A0);
+ else /*if (CHIP_REV(bp) == CHIP_REV_Bx)*/
+ SET_FLAGS(flags, MODE_E3_B0 | MODE_COS3);
+ }
+
+ if (IS_MF(bp)) {
+ SET_FLAGS(flags, MODE_MF);
+ switch (bp->mf_mode) {
+ case MULTI_FUNCTION_SD:
+ SET_FLAGS(flags, MODE_MF_SD);
+ break;
+ case MULTI_FUNCTION_SI:
+ SET_FLAGS(flags, MODE_MF_SI);
+ break;
+ }
+ } else
+ SET_FLAGS(flags, MODE_SF);
+
+#if defined(__LITTLE_ENDIAN)
+ SET_FLAGS(flags, MODE_LITTLE_ENDIAN);
+#else /*(__BIG_ENDIAN)*/
+ SET_FLAGS(flags, MODE_BIG_ENDIAN);
+#endif
+ INIT_MODE_FLAGS(bp) = flags;
+}
+
+static int __devinit bnx2x_init_bp(struct bnx2x *bp)
+{
+ int func;
+ int timer_interval;
+ int rc;
+
+ mutex_init(&bp->port.phy_mutex);
+ mutex_init(&bp->fw_mb_mutex);
+ spin_lock_init(&bp->stats_lock);
+#ifdef BCM_CNIC
+ mutex_init(&bp->cnic_mutex);
+#endif
+
+ INIT_DELAYED_WORK(&bp->sp_task, bnx2x_sp_task);
+ INIT_DELAYED_WORK(&bp->sp_rtnl_task, bnx2x_sp_rtnl_task);
+ INIT_DELAYED_WORK(&bp->period_task, bnx2x_period_task);
+ rc = bnx2x_get_hwinfo(bp);
+ if (rc)
+ return rc;
+
+ bnx2x_set_modes_bitmap(bp);
+
+ rc = bnx2x_alloc_mem_bp(bp);
+ if (rc)
+ return rc;
+
+ bnx2x_read_fwinfo(bp);
+
+ func = BP_FUNC(bp);
+
+ /* need to reset chip if undi was active */
+ if (!BP_NOMCP(bp))
+ bnx2x_undi_unload(bp);
+
+ if (CHIP_REV_IS_FPGA(bp))
+ dev_err(&bp->pdev->dev, "FPGA detected\n");
+
+ if (BP_NOMCP(bp) && (func == 0))
+ dev_err(&bp->pdev->dev, "MCP disabled, "
+ "must load devices in order!\n");
+
+ bp->multi_mode = multi_mode;
+
+ /* Set TPA flags */
+ if (disable_tpa) {
+ bp->flags &= ~TPA_ENABLE_FLAG;
+ bp->dev->features &= ~NETIF_F_LRO;
+ } else {
+ bp->flags |= TPA_ENABLE_FLAG;
+ bp->dev->features |= NETIF_F_LRO;
+ }
+ bp->disable_tpa = disable_tpa;
+
+ if (CHIP_IS_E1(bp))
+ bp->dropless_fc = 0;
+ else
+ bp->dropless_fc = dropless_fc;
+
+ bp->mrrs = mrrs;
+
+ bp->tx_ring_size = MAX_TX_AVAIL;
+
+ /* make sure that the numbers are in the right granularity */
+ bp->tx_ticks = (50 / BNX2X_BTR) * BNX2X_BTR;
+ bp->rx_ticks = (25 / BNX2X_BTR) * BNX2X_BTR;
+
+ timer_interval = (CHIP_REV_IS_SLOW(bp) ? 5*HZ : HZ);
+ bp->current_interval = (poll ? poll : timer_interval);
+
+ init_timer(&bp->timer);
+ bp->timer.expires = jiffies + bp->current_interval;
+ bp->timer.data = (unsigned long) bp;
+ bp->timer.function = bnx2x_timer;
+
+ bnx2x_dcbx_set_state(bp, true, BNX2X_DCBX_ENABLED_ON_NEG_ON);
+ bnx2x_dcbx_init_params(bp);
+
+#ifdef BCM_CNIC
+ if (CHIP_IS_E1x(bp))
+ bp->cnic_base_cl_id = FP_SB_MAX_E1x;
+ else
+ bp->cnic_base_cl_id = FP_SB_MAX_E2;
+#endif
+
+ /* multiple tx priority */
+ if (CHIP_IS_E1x(bp))
+ bp->max_cos = BNX2X_MULTI_TX_COS_E1X;
+ if (CHIP_IS_E2(bp) || CHIP_IS_E3A0(bp))
+ bp->max_cos = BNX2X_MULTI_TX_COS_E2_E3A0;
+ if (CHIP_IS_E3B0(bp))
+ bp->max_cos = BNX2X_MULTI_TX_COS_E3B0;
+
+ return rc;
+}
+
+
+/****************************************************************************
+* General service functions
+****************************************************************************/
+
+/*
+ * net_device service functions
+ */
+
+/* called with rtnl_lock */
+static int bnx2x_open(struct net_device *dev)
+{
+ struct bnx2x *bp = netdev_priv(dev);
+ bool global = false;
+ int other_engine = BP_PATH(bp) ? 0 : 1;
+ u32 other_load_counter, load_counter;
+
+ netif_carrier_off(dev);
+
+ bnx2x_set_power_state(bp, PCI_D0);
+
+ other_load_counter = bnx2x_get_load_cnt(bp, other_engine);
+ load_counter = bnx2x_get_load_cnt(bp, BP_PATH(bp));
+
+ /*
+ * If parity had happen during the unload, then attentions
+ * and/or RECOVERY_IN_PROGRES may still be set. In this case we
+ * want the first function loaded on the current engine to
+ * complete the recovery.
+ */
+ if (!bnx2x_reset_is_done(bp, BP_PATH(bp)) ||
+ bnx2x_chk_parity_attn(bp, &global, true))
+ do {
+ /*
+ * If there are attentions and they are in a global
+ * blocks, set the GLOBAL_RESET bit regardless whether
+ * it will be this function that will complete the
+ * recovery or not.
+ */
+ if (global)
+ bnx2x_set_reset_global(bp);
+
+ /*
+ * Only the first function on the current engine should
+ * try to recover in open. In case of attentions in
+ * global blocks only the first in the chip should try
+ * to recover.
+ */
+ if ((!load_counter &&
+ (!global || !other_load_counter)) &&
+ bnx2x_trylock_leader_lock(bp) &&
+ !bnx2x_leader_reset(bp)) {
+ netdev_info(bp->dev, "Recovered in open\n");
+ break;
+ }
+
+ /* recovery has failed... */
+ bnx2x_set_power_state(bp, PCI_D3hot);
+ bp->recovery_state = BNX2X_RECOVERY_FAILED;
+
+ netdev_err(bp->dev, "Recovery flow hasn't been properly"
+ " completed yet. Try again later. If u still see this"
+ " message after a few retries then power cycle is"
+ " required.\n");
+
+ return -EAGAIN;
+ } while (0);
+
+ bp->recovery_state = BNX2X_RECOVERY_DONE;
+ return bnx2x_nic_load(bp, LOAD_OPEN);
+}
+
+/* called with rtnl_lock */
+static int bnx2x_close(struct net_device *dev)
+{
+ struct bnx2x *bp = netdev_priv(dev);
+
+ /* Unload the driver, release IRQs */
+ bnx2x_nic_unload(bp, UNLOAD_CLOSE);
+
+ /* Power off */
+ bnx2x_set_power_state(bp, PCI_D3hot);
+
+ return 0;
+}
+
+static inline int bnx2x_init_mcast_macs_list(struct bnx2x *bp,
+ struct bnx2x_mcast_ramrod_params *p)
+{
+ int mc_count = netdev_mc_count(bp->dev);
+ struct bnx2x_mcast_list_elem *mc_mac =
+ kzalloc(sizeof(*mc_mac) * mc_count, GFP_ATOMIC);
+ struct netdev_hw_addr *ha;
+
+ if (!mc_mac)
+ return -ENOMEM;
+
+ INIT_LIST_HEAD(&p->mcast_list);
+
+ netdev_for_each_mc_addr(ha, bp->dev) {
+ mc_mac->mac = bnx2x_mc_addr(ha);
+ list_add_tail(&mc_mac->link, &p->mcast_list);
+ mc_mac++;
+ }
+
+ p->mcast_list_len = mc_count;
+
+ return 0;
+}
+
+static inline void bnx2x_free_mcast_macs_list(
+ struct bnx2x_mcast_ramrod_params *p)
+{
+ struct bnx2x_mcast_list_elem *mc_mac =
+ list_first_entry(&p->mcast_list, struct bnx2x_mcast_list_elem,
+ link);
+
+ WARN_ON(!mc_mac);
+ kfree(mc_mac);
+}
+
+/**
+ * bnx2x_set_uc_list - configure a new unicast MACs list.
+ *
+ * @bp: driver handle
+ *
+ * We will use zero (0) as a MAC type for these MACs.
+ */
+static inline int bnx2x_set_uc_list(struct bnx2x *bp)
+{
+ int rc;
+ struct net_device *dev = bp->dev;
+ struct netdev_hw_addr *ha;
+ struct bnx2x_vlan_mac_obj *mac_obj = &bp->fp->mac_obj;
+ unsigned long ramrod_flags = 0;
+
+ /* First schedule a cleanup up of old configuration */
+ rc = bnx2x_del_all_macs(bp, mac_obj, BNX2X_UC_LIST_MAC, false);
+ if (rc < 0) {
+ BNX2X_ERR("Failed to schedule DELETE operations: %d\n", rc);
+ return rc;
+ }
+
+ netdev_for_each_uc_addr(ha, dev) {
+ rc = bnx2x_set_mac_one(bp, bnx2x_uc_addr(ha), mac_obj, true,
+ BNX2X_UC_LIST_MAC, &ramrod_flags);
+ if (rc < 0) {
+ BNX2X_ERR("Failed to schedule ADD operations: %d\n",
+ rc);
+ return rc;
+ }
+ }
+
+ /* Execute the pending commands */
+ __set_bit(RAMROD_CONT, &ramrod_flags);
+ return bnx2x_set_mac_one(bp, NULL, mac_obj, false /* don't care */,
+ BNX2X_UC_LIST_MAC, &ramrod_flags);
+}
+
+static inline int bnx2x_set_mc_list(struct bnx2x *bp)
+{
+ struct net_device *dev = bp->dev;
+ struct bnx2x_mcast_ramrod_params rparam = {0};
+ int rc = 0;
+
+ rparam.mcast_obj = &bp->mcast_obj;
+
+ /* first, clear all configured multicast MACs */
+ rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_DEL);
+ if (rc < 0) {
+ BNX2X_ERR("Failed to clear multicast "
+ "configuration: %d\n", rc);
+ return rc;
+ }
+
+ /* then, configure a new MACs list */
+ if (netdev_mc_count(dev)) {
+ rc = bnx2x_init_mcast_macs_list(bp, &rparam);
+ if (rc) {
+ BNX2X_ERR("Failed to create multicast MACs "
+ "list: %d\n", rc);
+ return rc;
+ }
+
+ /* Now add the new MACs */
+ rc = bnx2x_config_mcast(bp, &rparam,
+ BNX2X_MCAST_CMD_ADD);
+ if (rc < 0)
+ BNX2X_ERR("Failed to set a new multicast "
+ "configuration: %d\n", rc);
+
+ bnx2x_free_mcast_macs_list(&rparam);
+ }
+
+ return rc;
+}
+
+
+/* If bp->state is OPEN, should be called with netif_addr_lock_bh() */
+void bnx2x_set_rx_mode(struct net_device *dev)
+{
+ struct bnx2x *bp = netdev_priv(dev);
+ u32 rx_mode = BNX2X_RX_MODE_NORMAL;
+
+ if (bp->state != BNX2X_STATE_OPEN) {
+ DP(NETIF_MSG_IFUP, "state is %x, returning\n", bp->state);
+ return;
+ }
+
+ DP(NETIF_MSG_IFUP, "dev->flags = %x\n", bp->dev->flags);
+
+ if (dev->flags & IFF_PROMISC)
+ rx_mode = BNX2X_RX_MODE_PROMISC;
+ else if ((dev->flags & IFF_ALLMULTI) ||
+ ((netdev_mc_count(dev) > BNX2X_MAX_MULTICAST) &&
+ CHIP_IS_E1(bp)))
+ rx_mode = BNX2X_RX_MODE_ALLMULTI;
+ else {
+ /* some multicasts */
+ if (bnx2x_set_mc_list(bp) < 0)
+ rx_mode = BNX2X_RX_MODE_ALLMULTI;
+
+ if (bnx2x_set_uc_list(bp) < 0)
+ rx_mode = BNX2X_RX_MODE_PROMISC;
+ }
+
+ bp->rx_mode = rx_mode;
+
+ /* Schedule the rx_mode command */
+ if (test_bit(BNX2X_FILTER_RX_MODE_PENDING, &bp->sp_state)) {
+ set_bit(BNX2X_FILTER_RX_MODE_SCHED, &bp->sp_state);
+ return;
+ }
+
+ bnx2x_set_storm_rx_mode(bp);
+}
+
+/* called with rtnl_lock */
+static int bnx2x_mdio_read(struct net_device *netdev, int prtad,
+ int devad, u16 addr)
+{
+ struct bnx2x *bp = netdev_priv(netdev);
+ u16 value;
+ int rc;
+
+ DP(NETIF_MSG_LINK, "mdio_read: prtad 0x%x, devad 0x%x, addr 0x%x\n",
+ prtad, devad, addr);
+
+ /* The HW expects different devad if CL22 is used */
+ devad = (devad == MDIO_DEVAD_NONE) ? DEFAULT_PHY_DEV_ADDR : devad;
+
+ bnx2x_acquire_phy_lock(bp);
+ rc = bnx2x_phy_read(&bp->link_params, prtad, devad, addr, &value);
+ bnx2x_release_phy_lock(bp);
+ DP(NETIF_MSG_LINK, "mdio_read_val 0x%x rc = 0x%x\n", value, rc);
+
+ if (!rc)
+ rc = value;
+ return rc;
+}
+
+/* called with rtnl_lock */
+static int bnx2x_mdio_write(struct net_device *netdev, int prtad, int devad,
+ u16 addr, u16 value)
+{
+ struct bnx2x *bp = netdev_priv(netdev);
+ int rc;
+
+ DP(NETIF_MSG_LINK, "mdio_write: prtad 0x%x, devad 0x%x, addr 0x%x,"
+ " value 0x%x\n", prtad, devad, addr, value);
+
+ /* The HW expects different devad if CL22 is used */
+ devad = (devad == MDIO_DEVAD_NONE) ? DEFAULT_PHY_DEV_ADDR : devad;
+
+ bnx2x_acquire_phy_lock(bp);
+ rc = bnx2x_phy_write(&bp->link_params, prtad, devad, addr, value);
+ bnx2x_release_phy_lock(bp);
+ return rc;
+}
+
+/* called with rtnl_lock */
+static int bnx2x_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+ struct bnx2x *bp = netdev_priv(dev);
+ struct mii_ioctl_data *mdio = if_mii(ifr);
+
+ DP(NETIF_MSG_LINK, "ioctl: phy id 0x%x, reg 0x%x, val_in 0x%x\n",
+ mdio->phy_id, mdio->reg_num, mdio->val_in);
+
+ if (!netif_running(dev))
+ return -EAGAIN;
+
+ return mdio_mii_ioctl(&bp->mdio, mdio, cmd);
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void poll_bnx2x(struct net_device *dev)
+{
+ struct bnx2x *bp = netdev_priv(dev);
+
+ disable_irq(bp->pdev->irq);
+ bnx2x_interrupt(bp->pdev->irq, dev);
+ enable_irq(bp->pdev->irq);
+}
+#endif
+
+static const struct net_device_ops bnx2x_netdev_ops = {
+ .ndo_open = bnx2x_open,
+ .ndo_stop = bnx2x_close,
+ .ndo_start_xmit = bnx2x_start_xmit,
+ .ndo_select_queue = bnx2x_select_queue,
+ .ndo_set_rx_mode = bnx2x_set_rx_mode,
+ .ndo_set_mac_address = bnx2x_change_mac_addr,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_do_ioctl = bnx2x_ioctl,
+ .ndo_change_mtu = bnx2x_change_mtu,
+ .ndo_fix_features = bnx2x_fix_features,
+ .ndo_set_features = bnx2x_set_features,
+ .ndo_tx_timeout = bnx2x_tx_timeout,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = poll_bnx2x,
+#endif
+ .ndo_setup_tc = bnx2x_setup_tc,
+
+#if defined(NETDEV_FCOE_WWNN) && defined(BCM_CNIC)
+ .ndo_fcoe_get_wwn = bnx2x_fcoe_get_wwn,
+#endif
+};
+
+static inline int bnx2x_set_coherency_mask(struct bnx2x *bp)
+{
+ struct device *dev = &bp->pdev->dev;
+
+ if (dma_set_mask(dev, DMA_BIT_MASK(64)) == 0) {
+ bp->flags |= USING_DAC_FLAG;
+ if (dma_set_coherent_mask(dev, DMA_BIT_MASK(64)) != 0) {
+ dev_err(dev, "dma_set_coherent_mask failed, "
+ "aborting\n");
+ return -EIO;
+ }
+ } else if (dma_set_mask(dev, DMA_BIT_MASK(32)) != 0) {
+ dev_err(dev, "System does not support DMA, aborting\n");
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int __devinit bnx2x_init_dev(struct pci_dev *pdev,
+ struct net_device *dev,
+ unsigned long board_type)
+{
+ struct bnx2x *bp;
+ int rc;
+
+ SET_NETDEV_DEV(dev, &pdev->dev);
+ bp = netdev_priv(dev);
+
+ bp->dev = dev;
+ bp->pdev = pdev;
+ bp->flags = 0;
+ bp->pf_num = PCI_FUNC(pdev->devfn);
+
+ rc = pci_enable_device(pdev);
+ if (rc) {
+ dev_err(&bp->pdev->dev,
+ "Cannot enable PCI device, aborting\n");
+ goto err_out;
+ }
+
+ if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
+ dev_err(&bp->pdev->dev,
+ "Cannot find PCI device base address, aborting\n");
+ rc = -ENODEV;
+ goto err_out_disable;
+ }
+
+ if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
+ dev_err(&bp->pdev->dev, "Cannot find second PCI device"
+ " base address, aborting\n");
+ rc = -ENODEV;
+ goto err_out_disable;
+ }
+
+ if (atomic_read(&pdev->enable_cnt) == 1) {
+ rc = pci_request_regions(pdev, DRV_MODULE_NAME);
+ if (rc) {
+ dev_err(&bp->pdev->dev,
+ "Cannot obtain PCI resources, aborting\n");
+ goto err_out_disable;
+ }
+
+ pci_set_master(pdev);
+ pci_save_state(pdev);
+ }
+
+ bp->pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM);
+ if (bp->pm_cap == 0) {
+ dev_err(&bp->pdev->dev,
+ "Cannot find power management capability, aborting\n");
+ rc = -EIO;
+ goto err_out_release;
+ }
+
+ if (!pci_is_pcie(pdev)) {
+ dev_err(&bp->pdev->dev, "Not PCI Express, aborting\n");
+ rc = -EIO;
+ goto err_out_release;
+ }
+
+ rc = bnx2x_set_coherency_mask(bp);
+ if (rc)
+ goto err_out_release;
+
+ dev->mem_start = pci_resource_start(pdev, 0);
+ dev->base_addr = dev->mem_start;
+ dev->mem_end = pci_resource_end(pdev, 0);
+
+ dev->irq = pdev->irq;
+
+ bp->regview = pci_ioremap_bar(pdev, 0);
+ if (!bp->regview) {
+ dev_err(&bp->pdev->dev,
+ "Cannot map register space, aborting\n");
+ rc = -ENOMEM;
+ goto err_out_release;
+ }
+
+ bnx2x_set_power_state(bp, PCI_D0);
+
+ /* clean indirect addresses */
+ pci_write_config_dword(bp->pdev, PCICFG_GRC_ADDRESS,
+ PCICFG_VENDOR_ID_OFFSET);
++ /* Clean the following indirect addresses for all functions since it
++ * is not used by the driver.
++ */
++ REG_WR(bp, PXP2_REG_PGL_ADDR_88_F0, 0);
++ REG_WR(bp, PXP2_REG_PGL_ADDR_8C_F0, 0);
++ REG_WR(bp, PXP2_REG_PGL_ADDR_90_F0, 0);
++ REG_WR(bp, PXP2_REG_PGL_ADDR_94_F0, 0);
++ REG_WR(bp, PXP2_REG_PGL_ADDR_88_F1, 0);
++ REG_WR(bp, PXP2_REG_PGL_ADDR_8C_F1, 0);
++ REG_WR(bp, PXP2_REG_PGL_ADDR_90_F1, 0);
++ REG_WR(bp, PXP2_REG_PGL_ADDR_94_F1, 0);
+
+ /*
+ * Enable internal target-read (in case we are probed after PF FLR).
+ * Must be done prior to any BAR read access. Only for 57712 and up
+ */
+ if (board_type != BCM57710 &&
+ board_type != BCM57711 &&
+ board_type != BCM57711E)
+ REG_WR(bp, PGLUE_B_REG_INTERNAL_PFID_ENABLE_TARGET_READ, 1);
+
+ /* Reset the load counter */
+ bnx2x_clear_load_cnt(bp);
+
+ dev->watchdog_timeo = TX_TIMEOUT;
+
+ dev->netdev_ops = &bnx2x_netdev_ops;
+ bnx2x_set_ethtool_ops(dev);
+
+ dev->priv_flags |= IFF_UNICAST_FLT;
+
+ dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
+ NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6 |
+ NETIF_F_RXCSUM | NETIF_F_LRO | NETIF_F_HW_VLAN_TX;
+
+ dev->vlan_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
+ NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6 | NETIF_F_HIGHDMA;
+
+ dev->features |= dev->hw_features | NETIF_F_HW_VLAN_RX;
+ if (bp->flags & USING_DAC_FLAG)
+ dev->features |= NETIF_F_HIGHDMA;
+
+ /* Add Loopback capability to the device */
+ dev->hw_features |= NETIF_F_LOOPBACK;
+
+#ifdef BCM_DCBNL
+ dev->dcbnl_ops = &bnx2x_dcbnl_ops;
+#endif
+
+ /* get_port_hwinfo() will set prtad and mmds properly */
+ bp->mdio.prtad = MDIO_PRTAD_NONE;
+ bp->mdio.mmds = 0;
+ bp->mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
+ bp->mdio.dev = dev;
+ bp->mdio.mdio_read = bnx2x_mdio_read;
+ bp->mdio.mdio_write = bnx2x_mdio_write;
+
+ return 0;
+
+err_out_release:
+ if (atomic_read(&pdev->enable_cnt) == 1)
+ pci_release_regions(pdev);
+
+err_out_disable:
+ pci_disable_device(pdev);
+ pci_set_drvdata(pdev, NULL);
+
+err_out:
+ return rc;
+}
+
+static void __devinit bnx2x_get_pcie_width_speed(struct bnx2x *bp,
+ int *width, int *speed)
+{
+ u32 val = REG_RD(bp, PCICFG_OFFSET + PCICFG_LINK_CONTROL);
+
+ *width = (val & PCICFG_LINK_WIDTH) >> PCICFG_LINK_WIDTH_SHIFT;
+
+ /* return value of 1=2.5GHz 2=5GHz */
+ *speed = (val & PCICFG_LINK_SPEED) >> PCICFG_LINK_SPEED_SHIFT;
+}
+
+static int bnx2x_check_firmware(struct bnx2x *bp)
+{
+ const struct firmware *firmware = bp->firmware;
+ struct bnx2x_fw_file_hdr *fw_hdr;
+ struct bnx2x_fw_file_section *sections;
+ u32 offset, len, num_ops;
+ u16 *ops_offsets;
+ int i;
+ const u8 *fw_ver;
+
+ if (firmware->size < sizeof(struct bnx2x_fw_file_hdr))
+ return -EINVAL;
+
+ fw_hdr = (struct bnx2x_fw_file_hdr *)firmware->data;
+ sections = (struct bnx2x_fw_file_section *)fw_hdr;
+
+ /* Make sure none of the offsets and sizes make us read beyond
+ * the end of the firmware data */
+ for (i = 0; i < sizeof(*fw_hdr) / sizeof(*sections); i++) {
+ offset = be32_to_cpu(sections[i].offset);
+ len = be32_to_cpu(sections[i].len);
+ if (offset + len > firmware->size) {
+ dev_err(&bp->pdev->dev,
+ "Section %d length is out of bounds\n", i);
+ return -EINVAL;
+ }
+ }
+
+ /* Likewise for the init_ops offsets */
+ offset = be32_to_cpu(fw_hdr->init_ops_offsets.offset);
+ ops_offsets = (u16 *)(firmware->data + offset);
+ num_ops = be32_to_cpu(fw_hdr->init_ops.len) / sizeof(struct raw_op);
+
+ for (i = 0; i < be32_to_cpu(fw_hdr->init_ops_offsets.len) / 2; i++) {
+ if (be16_to_cpu(ops_offsets[i]) > num_ops) {
+ dev_err(&bp->pdev->dev,
+ "Section offset %d is out of bounds\n", i);
+ return -EINVAL;
+ }
+ }
+
+ /* Check FW version */
+ offset = be32_to_cpu(fw_hdr->fw_version.offset);
+ fw_ver = firmware->data + offset;
+ if ((fw_ver[0] != BCM_5710_FW_MAJOR_VERSION) ||
+ (fw_ver[1] != BCM_5710_FW_MINOR_VERSION) ||
+ (fw_ver[2] != BCM_5710_FW_REVISION_VERSION) ||
+ (fw_ver[3] != BCM_5710_FW_ENGINEERING_VERSION)) {
+ dev_err(&bp->pdev->dev,
+ "Bad FW version:%d.%d.%d.%d. Should be %d.%d.%d.%d\n",
+ fw_ver[0], fw_ver[1], fw_ver[2],
+ fw_ver[3], BCM_5710_FW_MAJOR_VERSION,
+ BCM_5710_FW_MINOR_VERSION,
+ BCM_5710_FW_REVISION_VERSION,
+ BCM_5710_FW_ENGINEERING_VERSION);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static inline void be32_to_cpu_n(const u8 *_source, u8 *_target, u32 n)
+{
+ const __be32 *source = (const __be32 *)_source;
+ u32 *target = (u32 *)_target;
+ u32 i;
+
+ for (i = 0; i < n/4; i++)
+ target[i] = be32_to_cpu(source[i]);
+}
+
+/*
+ Ops array is stored in the following format:
+ {op(8bit), offset(24bit, big endian), data(32bit, big endian)}
+ */
+static inline void bnx2x_prep_ops(const u8 *_source, u8 *_target, u32 n)
+{
+ const __be32 *source = (const __be32 *)_source;
+ struct raw_op *target = (struct raw_op *)_target;
+ u32 i, j, tmp;
+
+ for (i = 0, j = 0; i < n/8; i++, j += 2) {
+ tmp = be32_to_cpu(source[j]);
+ target[i].op = (tmp >> 24) & 0xff;
+ target[i].offset = tmp & 0xffffff;
+ target[i].raw_data = be32_to_cpu(source[j + 1]);
+ }
+}
+
+/**
+ * IRO array is stored in the following format:
+ * {base(24bit), m1(16bit), m2(16bit), m3(16bit), size(16bit) }
+ */
+static inline void bnx2x_prep_iro(const u8 *_source, u8 *_target, u32 n)
+{
+ const __be32 *source = (const __be32 *)_source;
+ struct iro *target = (struct iro *)_target;
+ u32 i, j, tmp;
+
+ for (i = 0, j = 0; i < n/sizeof(struct iro); i++) {
+ target[i].base = be32_to_cpu(source[j]);
+ j++;
+ tmp = be32_to_cpu(source[j]);
+ target[i].m1 = (tmp >> 16) & 0xffff;
+ target[i].m2 = tmp & 0xffff;
+ j++;
+ tmp = be32_to_cpu(source[j]);
+ target[i].m3 = (tmp >> 16) & 0xffff;
+ target[i].size = tmp & 0xffff;
+ j++;
+ }
+}
+
+static inline void be16_to_cpu_n(const u8 *_source, u8 *_target, u32 n)
+{
+ const __be16 *source = (const __be16 *)_source;
+ u16 *target = (u16 *)_target;
+ u32 i;
+
+ for (i = 0; i < n/2; i++)
+ target[i] = be16_to_cpu(source[i]);
+}
+
+#define BNX2X_ALLOC_AND_SET(arr, lbl, func) \
+do { \
+ u32 len = be32_to_cpu(fw_hdr->arr.len); \
+ bp->arr = kmalloc(len, GFP_KERNEL); \
+ if (!bp->arr) { \
+ pr_err("Failed to allocate %d bytes for "#arr"\n", len); \
+ goto lbl; \
+ } \
+ func(bp->firmware->data + be32_to_cpu(fw_hdr->arr.offset), \
+ (u8 *)bp->arr, len); \
+} while (0)
+
+int bnx2x_init_firmware(struct bnx2x *bp)
+{
+ const char *fw_file_name;
+ struct bnx2x_fw_file_hdr *fw_hdr;
+ int rc;
+
+ if (CHIP_IS_E1(bp))
+ fw_file_name = FW_FILE_NAME_E1;
+ else if (CHIP_IS_E1H(bp))
+ fw_file_name = FW_FILE_NAME_E1H;
+ else if (!CHIP_IS_E1x(bp))
+ fw_file_name = FW_FILE_NAME_E2;
+ else {
+ BNX2X_ERR("Unsupported chip revision\n");
+ return -EINVAL;
+ }
+
+ BNX2X_DEV_INFO("Loading %s\n", fw_file_name);
+
+ rc = request_firmware(&bp->firmware, fw_file_name, &bp->pdev->dev);
+ if (rc) {
+ BNX2X_ERR("Can't load firmware file %s\n", fw_file_name);
+ goto request_firmware_exit;
+ }
+
+ rc = bnx2x_check_firmware(bp);
+ if (rc) {
+ BNX2X_ERR("Corrupt firmware file %s\n", fw_file_name);
+ goto request_firmware_exit;
+ }
+
+ fw_hdr = (struct bnx2x_fw_file_hdr *)bp->firmware->data;
+
+ /* Initialize the pointers to the init arrays */
+ /* Blob */
+ BNX2X_ALLOC_AND_SET(init_data, request_firmware_exit, be32_to_cpu_n);
+
+ /* Opcodes */
+ BNX2X_ALLOC_AND_SET(init_ops, init_ops_alloc_err, bnx2x_prep_ops);
+
+ /* Offsets */
+ BNX2X_ALLOC_AND_SET(init_ops_offsets, init_offsets_alloc_err,
+ be16_to_cpu_n);
+
+ /* STORMs firmware */
+ INIT_TSEM_INT_TABLE_DATA(bp) = bp->firmware->data +
+ be32_to_cpu(fw_hdr->tsem_int_table_data.offset);
+ INIT_TSEM_PRAM_DATA(bp) = bp->firmware->data +
+ be32_to_cpu(fw_hdr->tsem_pram_data.offset);
+ INIT_USEM_INT_TABLE_DATA(bp) = bp->firmware->data +
+ be32_to_cpu(fw_hdr->usem_int_table_data.offset);
+ INIT_USEM_PRAM_DATA(bp) = bp->firmware->data +
+ be32_to_cpu(fw_hdr->usem_pram_data.offset);
+ INIT_XSEM_INT_TABLE_DATA(bp) = bp->firmware->data +
+ be32_to_cpu(fw_hdr->xsem_int_table_data.offset);
+ INIT_XSEM_PRAM_DATA(bp) = bp->firmware->data +
+ be32_to_cpu(fw_hdr->xsem_pram_data.offset);
+ INIT_CSEM_INT_TABLE_DATA(bp) = bp->firmware->data +
+ be32_to_cpu(fw_hdr->csem_int_table_data.offset);
+ INIT_CSEM_PRAM_DATA(bp) = bp->firmware->data +
+ be32_to_cpu(fw_hdr->csem_pram_data.offset);
+ /* IRO */
+ BNX2X_ALLOC_AND_SET(iro_arr, iro_alloc_err, bnx2x_prep_iro);
+
+ return 0;
+
+iro_alloc_err:
+ kfree(bp->init_ops_offsets);
+init_offsets_alloc_err:
+ kfree(bp->init_ops);
+init_ops_alloc_err:
+ kfree(bp->init_data);
+request_firmware_exit:
+ release_firmware(bp->firmware);
+
+ return rc;
+}
+
+static void bnx2x_release_firmware(struct bnx2x *bp)
+{
+ kfree(bp->init_ops_offsets);
+ kfree(bp->init_ops);
+ kfree(bp->init_data);
+ release_firmware(bp->firmware);
+}
+
+
+static struct bnx2x_func_sp_drv_ops bnx2x_func_sp_drv = {
+ .init_hw_cmn_chip = bnx2x_init_hw_common_chip,
+ .init_hw_cmn = bnx2x_init_hw_common,
+ .init_hw_port = bnx2x_init_hw_port,
+ .init_hw_func = bnx2x_init_hw_func,
+
+ .reset_hw_cmn = bnx2x_reset_common,
+ .reset_hw_port = bnx2x_reset_port,
+ .reset_hw_func = bnx2x_reset_func,
+
+ .gunzip_init = bnx2x_gunzip_init,
+ .gunzip_end = bnx2x_gunzip_end,
+
+ .init_fw = bnx2x_init_firmware,
+ .release_fw = bnx2x_release_firmware,
+};
+
+void bnx2x__init_func_obj(struct bnx2x *bp)
+{
+ /* Prepare DMAE related driver resources */
+ bnx2x_setup_dmae(bp);
+
+ bnx2x_init_func_obj(bp, &bp->func_obj,
+ bnx2x_sp(bp, func_rdata),
+ bnx2x_sp_mapping(bp, func_rdata),
+ &bnx2x_func_sp_drv);
+}
+
+/* must be called after sriov-enable */
+static inline int bnx2x_set_qm_cid_count(struct bnx2x *bp)
+{
+ int cid_count = BNX2X_L2_CID_COUNT(bp);
+
+#ifdef BCM_CNIC
+ cid_count += CNIC_CID_MAX;
+#endif
+ return roundup(cid_count, QM_CID_ROUND);
+}
+
+/**
+ * bnx2x_get_num_none_def_sbs - return the number of none default SBs
+ *
+ * @dev: pci device
+ *
+ */
+static inline int bnx2x_get_num_non_def_sbs(struct pci_dev *pdev)
+{
+ int pos;
+ u16 control;
+
+ pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
+
+ /*
+ * If MSI-X is not supported - return number of SBs needed to support
+ * one fast path queue: one FP queue + SB for CNIC
+ */
+ if (!pos)
+ return 1 + CNIC_PRESENT;
+
+ /*
+ * The value in the PCI configuration space is the index of the last
+ * entry, namely one less than the actual size of the table, which is
+ * exactly what we want to return from this function: number of all SBs
+ * without the default SB.
+ */
+ pci_read_config_word(pdev, pos + PCI_MSI_FLAGS, &control);
+ return control & PCI_MSIX_FLAGS_QSIZE;
+}
+
+static int __devinit bnx2x_init_one(struct pci_dev *pdev,
+ const struct pci_device_id *ent)
+{
+ struct net_device *dev = NULL;
+ struct bnx2x *bp;
+ int pcie_width, pcie_speed;
+ int rc, max_non_def_sbs;
+ int rx_count, tx_count, rss_count;
+ /*
+ * An estimated maximum supported CoS number according to the chip
+ * version.
+ * We will try to roughly estimate the maximum number of CoSes this chip
+ * may support in order to minimize the memory allocated for Tx
+ * netdev_queue's. This number will be accurately calculated during the
+ * initialization of bp->max_cos based on the chip versions AND chip
+ * revision in the bnx2x_init_bp().
+ */
+ u8 max_cos_est = 0;
+
+ switch (ent->driver_data) {
+ case BCM57710:
+ case BCM57711:
+ case BCM57711E:
+ max_cos_est = BNX2X_MULTI_TX_COS_E1X;
+ break;
+
+ case BCM57712:
+ case BCM57712_MF:
+ max_cos_est = BNX2X_MULTI_TX_COS_E2_E3A0;
+ break;
+
+ case BCM57800:
+ case BCM57800_MF:
+ case BCM57810:
+ case BCM57810_MF:
+ case BCM57840:
+ case BCM57840_MF:
+ max_cos_est = BNX2X_MULTI_TX_COS_E3B0;
+ break;
+
+ default:
+ pr_err("Unknown board_type (%ld), aborting\n",
+ ent->driver_data);
+ return -ENODEV;
+ }
+
+ max_non_def_sbs = bnx2x_get_num_non_def_sbs(pdev);
+
+ /* !!! FIXME !!!
+ * Do not allow the maximum SB count to grow above 16
+ * since Special CIDs starts from 16*BNX2X_MULTI_TX_COS=48.
+ * We will use the FP_SB_MAX_E1x macro for this matter.
+ */
+ max_non_def_sbs = min_t(int, FP_SB_MAX_E1x, max_non_def_sbs);
+
+ WARN_ON(!max_non_def_sbs);
+
+ /* Maximum number of RSS queues: one IGU SB goes to CNIC */
+ rss_count = max_non_def_sbs - CNIC_PRESENT;
+
+ /* Maximum number of netdev Rx queues: RSS + FCoE L2 */
+ rx_count = rss_count + FCOE_PRESENT;
+
+ /*
+ * Maximum number of netdev Tx queues:
+ * Maximum TSS queues * Maximum supported number of CoS + FCoE L2
+ */
+ tx_count = MAX_TXQS_PER_COS * max_cos_est + FCOE_PRESENT;
+
+ /* dev zeroed in init_etherdev */
+ dev = alloc_etherdev_mqs(sizeof(*bp), tx_count, rx_count);
+ if (!dev) {
+ dev_err(&pdev->dev, "Cannot allocate net device\n");
+ return -ENOMEM;
+ }
+
+ bp = netdev_priv(dev);
+
+ DP(NETIF_MSG_DRV, "Allocated netdev with %d tx and %d rx queues\n",
+ tx_count, rx_count);
+
+ bp->igu_sb_cnt = max_non_def_sbs;
+ bp->msg_enable = debug;
+ pci_set_drvdata(pdev, dev);
+
+ rc = bnx2x_init_dev(pdev, dev, ent->driver_data);
+ if (rc < 0) {
+ free_netdev(dev);
+ return rc;
+ }
+
+ DP(NETIF_MSG_DRV, "max_non_def_sbs %d\n", max_non_def_sbs);
+
+ rc = bnx2x_init_bp(bp);
+ if (rc)
+ goto init_one_exit;
+
+ /*
+ * Map doorbels here as we need the real value of bp->max_cos which
+ * is initialized in bnx2x_init_bp().
+ */
+ bp->doorbells = ioremap_nocache(pci_resource_start(pdev, 2),
+ min_t(u64, BNX2X_DB_SIZE(bp),
+ pci_resource_len(pdev, 2)));
+ if (!bp->doorbells) {
+ dev_err(&bp->pdev->dev,
+ "Cannot map doorbell space, aborting\n");
+ rc = -ENOMEM;
+ goto init_one_exit;
+ }
+
+ /* calc qm_cid_count */
+ bp->qm_cid_count = bnx2x_set_qm_cid_count(bp);
+
+#ifdef BCM_CNIC
+ /* disable FCOE L2 queue for E1x and E3*/
+ if (CHIP_IS_E1x(bp) || CHIP_IS_E3(bp))
+ bp->flags |= NO_FCOE_FLAG;
+
+#endif
+
+ /* Configure interrupt mode: try to enable MSI-X/MSI if
+ * needed, set bp->num_queues appropriately.
+ */
+ bnx2x_set_int_mode(bp);
+
+ /* Add all NAPI objects */
+ bnx2x_add_all_napi(bp);
+
+ rc = register_netdev(dev);
+ if (rc) {
+ dev_err(&pdev->dev, "Cannot register net device\n");
+ goto init_one_exit;
+ }
+
+#ifdef BCM_CNIC
+ if (!NO_FCOE(bp)) {
+ /* Add storage MAC address */
+ rtnl_lock();
+ dev_addr_add(bp->dev, bp->fip_mac, NETDEV_HW_ADDR_T_SAN);
+ rtnl_unlock();
+ }
+#endif
+
+ bnx2x_get_pcie_width_speed(bp, &pcie_width, &pcie_speed);
+
+ netdev_info(dev, "%s (%c%d) PCI-E x%d %s found at mem %lx, IRQ %d, node addr %pM\n",
+ board_info[ent->driver_data].name,
+ (CHIP_REV(bp) >> 12) + 'A', (CHIP_METAL(bp) >> 4),
+ pcie_width,
+ ((!CHIP_IS_E2(bp) && pcie_speed == 2) ||
+ (CHIP_IS_E2(bp) && pcie_speed == 1)) ?
+ "5GHz (Gen2)" : "2.5GHz",
+ dev->base_addr, bp->pdev->irq, dev->dev_addr);
+
+ return 0;
+
+init_one_exit:
+ if (bp->regview)
+ iounmap(bp->regview);
+
+ if (bp->doorbells)
+ iounmap(bp->doorbells);
+
+ free_netdev(dev);
+
+ if (atomic_read(&pdev->enable_cnt) == 1)
+ pci_release_regions(pdev);
+
+ pci_disable_device(pdev);
+ pci_set_drvdata(pdev, NULL);
+
+ return rc;
+}
+
+static void __devexit bnx2x_remove_one(struct pci_dev *pdev)
+{
+ struct net_device *dev = pci_get_drvdata(pdev);
+ struct bnx2x *bp;
+
+ if (!dev) {
+ dev_err(&pdev->dev, "BAD net device from bnx2x_init_one\n");
+ return;
+ }
+ bp = netdev_priv(dev);
+
+#ifdef BCM_CNIC
+ /* Delete storage MAC address */
+ if (!NO_FCOE(bp)) {
+ rtnl_lock();
+ dev_addr_del(bp->dev, bp->fip_mac, NETDEV_HW_ADDR_T_SAN);
+ rtnl_unlock();
+ }
+#endif
+
+#ifdef BCM_DCBNL
+ /* Delete app tlvs from dcbnl */
+ bnx2x_dcbnl_update_applist(bp, true);
+#endif
+
+ unregister_netdev(dev);
+
+ /* Delete all NAPI objects */
+ bnx2x_del_all_napi(bp);
+
+ /* Power on: we can't let PCI layer write to us while we are in D3 */
+ bnx2x_set_power_state(bp, PCI_D0);
+
+ /* Disable MSI/MSI-X */
+ bnx2x_disable_msi(bp);
+
+ /* Power off */
+ bnx2x_set_power_state(bp, PCI_D3hot);
+
+ /* Make sure RESET task is not scheduled before continuing */
+ cancel_delayed_work_sync(&bp->sp_rtnl_task);
+
+ if (bp->regview)
+ iounmap(bp->regview);
+
+ if (bp->doorbells)
+ iounmap(bp->doorbells);
+
+ bnx2x_free_mem_bp(bp);
+
+ free_netdev(dev);
+
+ if (atomic_read(&pdev->enable_cnt) == 1)
+ pci_release_regions(pdev);
+
+ pci_disable_device(pdev);
+ pci_set_drvdata(pdev, NULL);
+}
+
+static int bnx2x_eeh_nic_unload(struct bnx2x *bp)
+{
+ int i;
+
+ bp->state = BNX2X_STATE_ERROR;
+
+ bp->rx_mode = BNX2X_RX_MODE_NONE;
+
+#ifdef BCM_CNIC
+ bnx2x_cnic_notify(bp, CNIC_CTL_STOP_CMD);
+#endif
+ /* Stop Tx */
+ bnx2x_tx_disable(bp);
+
+ bnx2x_netif_stop(bp, 0);
+
+ del_timer_sync(&bp->timer);
+
+ bnx2x_stats_handle(bp, STATS_EVENT_STOP);
+
+ /* Release IRQs */
+ bnx2x_free_irq(bp);
+
+ /* Free SKBs, SGEs, TPA pool and driver internals */
+ bnx2x_free_skbs(bp);
+
+ for_each_rx_queue(bp, i)
+ bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE);
+
+ bnx2x_free_mem(bp);
+
+ bp->state = BNX2X_STATE_CLOSED;
+
+ netif_carrier_off(bp->dev);
+
+ return 0;
+}
+
+static void bnx2x_eeh_recover(struct bnx2x *bp)
+{
+ u32 val;
+
+ mutex_init(&bp->port.phy_mutex);
+
+ bp->common.shmem_base = REG_RD(bp, MISC_REG_SHARED_MEM_ADDR);
+ bp->link_params.shmem_base = bp->common.shmem_base;
+ BNX2X_DEV_INFO("shmem offset is 0x%x\n", bp->common.shmem_base);
+
+ if (!bp->common.shmem_base ||
+ (bp->common.shmem_base < 0xA0000) ||
+ (bp->common.shmem_base >= 0xC0000)) {
+ BNX2X_DEV_INFO("MCP not active\n");
+ bp->flags |= NO_MCP_FLAG;
+ return;
+ }
+
+ val = SHMEM_RD(bp, validity_map[BP_PORT(bp)]);
+ if ((val & (SHR_MEM_VALIDITY_DEV_INFO | SHR_MEM_VALIDITY_MB))
+ != (SHR_MEM_VALIDITY_DEV_INFO | SHR_MEM_VALIDITY_MB))
+ BNX2X_ERR("BAD MCP validity signature\n");
+
+ if (!BP_NOMCP(bp)) {
+ bp->fw_seq =
+ (SHMEM_RD(bp, func_mb[BP_FW_MB_IDX(bp)].drv_mb_header) &
+ DRV_MSG_SEQ_NUMBER_MASK);
+ BNX2X_DEV_INFO("fw_seq 0x%08x\n", bp->fw_seq);
+ }
+}
+
+/**
+ * bnx2x_io_error_detected - called when PCI error is detected
+ * @pdev: Pointer to PCI device
+ * @state: The current pci connection state
+ *
+ * This function is called after a PCI bus error affecting
+ * this device has been detected.
+ */
+static pci_ers_result_t bnx2x_io_error_detected(struct pci_dev *pdev,
+ pci_channel_state_t state)
+{
+ struct net_device *dev = pci_get_drvdata(pdev);
+ struct bnx2x *bp = netdev_priv(dev);
+
+ rtnl_lock();
+
+ netif_device_detach(dev);
+
+ if (state == pci_channel_io_perm_failure) {
+ rtnl_unlock();
+ return PCI_ERS_RESULT_DISCONNECT;
+ }
+
+ if (netif_running(dev))
+ bnx2x_eeh_nic_unload(bp);
+
+ pci_disable_device(pdev);
+
+ rtnl_unlock();
+
+ /* Request a slot reset */
+ return PCI_ERS_RESULT_NEED_RESET;
+}
+
+/**
+ * bnx2x_io_slot_reset - called after the PCI bus has been reset
+ * @pdev: Pointer to PCI device
+ *
+ * Restart the card from scratch, as if from a cold-boot.
+ */
+static pci_ers_result_t bnx2x_io_slot_reset(struct pci_dev *pdev)
+{
+ struct net_device *dev = pci_get_drvdata(pdev);
+ struct bnx2x *bp = netdev_priv(dev);
+
+ rtnl_lock();
+
+ if (pci_enable_device(pdev)) {
+ dev_err(&pdev->dev,
+ "Cannot re-enable PCI device after reset\n");
+ rtnl_unlock();
+ return PCI_ERS_RESULT_DISCONNECT;
+ }
+
+ pci_set_master(pdev);
+ pci_restore_state(pdev);
+
+ if (netif_running(dev))
+ bnx2x_set_power_state(bp, PCI_D0);
+
+ rtnl_unlock();
+
+ return PCI_ERS_RESULT_RECOVERED;
+}
+
+/**
+ * bnx2x_io_resume - called when traffic can start flowing again
+ * @pdev: Pointer to PCI device
+ *
+ * This callback is called when the error recovery driver tells us that
+ * its OK to resume normal operation.
+ */
+static void bnx2x_io_resume(struct pci_dev *pdev)
+{
+ struct net_device *dev = pci_get_drvdata(pdev);
+ struct bnx2x *bp = netdev_priv(dev);
+
+ if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
+ netdev_err(bp->dev, "Handling parity error recovery. "
+ "Try again later\n");
+ return;
+ }
+
+ rtnl_lock();
+
+ bnx2x_eeh_recover(bp);
+
+ if (netif_running(dev))
+ bnx2x_nic_load(bp, LOAD_NORMAL);
+
+ netif_device_attach(dev);
+
+ rtnl_unlock();
+}
+
+static struct pci_error_handlers bnx2x_err_handler = {
+ .error_detected = bnx2x_io_error_detected,
+ .slot_reset = bnx2x_io_slot_reset,
+ .resume = bnx2x_io_resume,
+};
+
+static struct pci_driver bnx2x_pci_driver = {
+ .name = DRV_MODULE_NAME,
+ .id_table = bnx2x_pci_tbl,
+ .probe = bnx2x_init_one,
+ .remove = __devexit_p(bnx2x_remove_one),
+ .suspend = bnx2x_suspend,
+ .resume = bnx2x_resume,
+ .err_handler = &bnx2x_err_handler,
+};
+
+static int __init bnx2x_init(void)
+{
+ int ret;
+
+ pr_info("%s", version);
+
+ bnx2x_wq = create_singlethread_workqueue("bnx2x");
+ if (bnx2x_wq == NULL) {
+ pr_err("Cannot create workqueue\n");
+ return -ENOMEM;
+ }
+
+ ret = pci_register_driver(&bnx2x_pci_driver);
+ if (ret) {
+ pr_err("Cannot register driver\n");
+ destroy_workqueue(bnx2x_wq);
+ }
+ return ret;
+}
+
+static void __exit bnx2x_cleanup(void)
+{
+ pci_unregister_driver(&bnx2x_pci_driver);
+
+ destroy_workqueue(bnx2x_wq);
+}
+
+void bnx2x_notify_link_changed(struct bnx2x *bp)
+{
+ REG_WR(bp, MISC_REG_AEU_GENERAL_ATTN_12 + BP_FUNC(bp)*sizeof(u32), 1);
+}
+
+module_init(bnx2x_init);
+module_exit(bnx2x_cleanup);
+
+#ifdef BCM_CNIC
+/**
+ * bnx2x_set_iscsi_eth_mac_addr - set iSCSI MAC(s).
+ *
+ * @bp: driver handle
+ * @set: set or clear the CAM entry
+ *
+ * This function will wait until the ramdord completion returns.
+ * Return 0 if success, -ENODEV if ramrod doesn't return.
+ */
+static inline int bnx2x_set_iscsi_eth_mac_addr(struct bnx2x *bp)
+{
+ unsigned long ramrod_flags = 0;
+
+ __set_bit(RAMROD_COMP_WAIT, &ramrod_flags);
+ return bnx2x_set_mac_one(bp, bp->cnic_eth_dev.iscsi_mac,
+ &bp->iscsi_l2_mac_obj, true,
+ BNX2X_ISCSI_ETH_MAC, &ramrod_flags);
+}
+
+/* count denotes the number of new completions we have seen */
+static void bnx2x_cnic_sp_post(struct bnx2x *bp, int count)
+{
+ struct eth_spe *spe;
+
+#ifdef BNX2X_STOP_ON_ERROR
+ if (unlikely(bp->panic))
+ return;
+#endif
+
+ spin_lock_bh(&bp->spq_lock);
+ BUG_ON(bp->cnic_spq_pending < count);
+ bp->cnic_spq_pending -= count;
+
+
+ for (; bp->cnic_kwq_pending; bp->cnic_kwq_pending--) {
+ u16 type = (le16_to_cpu(bp->cnic_kwq_cons->hdr.type)
+ & SPE_HDR_CONN_TYPE) >>
+ SPE_HDR_CONN_TYPE_SHIFT;
+ u8 cmd = (le32_to_cpu(bp->cnic_kwq_cons->hdr.conn_and_cmd_data)
+ >> SPE_HDR_CMD_ID_SHIFT) & 0xff;
+
+ /* Set validation for iSCSI L2 client before sending SETUP
+ * ramrod
+ */
+ if (type == ETH_CONNECTION_TYPE) {
+ if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP)
+ bnx2x_set_ctx_validation(bp, &bp->context.
+ vcxt[BNX2X_ISCSI_ETH_CID].eth,
+ BNX2X_ISCSI_ETH_CID);
+ }
+
+ /*
+ * There may be not more than 8 L2, not more than 8 L5 SPEs
+ * and in the air. We also check that number of outstanding
+ * COMMON ramrods is not more than the EQ and SPQ can
+ * accommodate.
+ */
+ if (type == ETH_CONNECTION_TYPE) {
+ if (!atomic_read(&bp->cq_spq_left))
+ break;
+ else
+ atomic_dec(&bp->cq_spq_left);
+ } else if (type == NONE_CONNECTION_TYPE) {
+ if (!atomic_read(&bp->eq_spq_left))
+ break;
+ else
+ atomic_dec(&bp->eq_spq_left);
+ } else if ((type == ISCSI_CONNECTION_TYPE) ||
+ (type == FCOE_CONNECTION_TYPE)) {
+ if (bp->cnic_spq_pending >=
+ bp->cnic_eth_dev.max_kwqe_pending)
+ break;
+ else
+ bp->cnic_spq_pending++;
+ } else {
+ BNX2X_ERR("Unknown SPE type: %d\n", type);
+ bnx2x_panic();
+ break;
+ }
+
+ spe = bnx2x_sp_get_next(bp);
+ *spe = *bp->cnic_kwq_cons;
+
+ DP(NETIF_MSG_TIMER, "pending on SPQ %d, on KWQ %d count %d\n",
+ bp->cnic_spq_pending, bp->cnic_kwq_pending, count);
+
+ if (bp->cnic_kwq_cons == bp->cnic_kwq_last)
+ bp->cnic_kwq_cons = bp->cnic_kwq;
+ else
+ bp->cnic_kwq_cons++;
+ }
+ bnx2x_sp_prod_update(bp);
+ spin_unlock_bh(&bp->spq_lock);
+}
+
+static int bnx2x_cnic_sp_queue(struct net_device *dev,
+ struct kwqe_16 *kwqes[], u32 count)
+{
+ struct bnx2x *bp = netdev_priv(dev);
+ int i;
+
+#ifdef BNX2X_STOP_ON_ERROR
+ if (unlikely(bp->panic))
+ return -EIO;
+#endif
+
+ spin_lock_bh(&bp->spq_lock);
+
+ for (i = 0; i < count; i++) {
+ struct eth_spe *spe = (struct eth_spe *)kwqes[i];
+
+ if (bp->cnic_kwq_pending == MAX_SP_DESC_CNT)
+ break;
+
+ *bp->cnic_kwq_prod = *spe;
+
+ bp->cnic_kwq_pending++;
+
+ DP(NETIF_MSG_TIMER, "L5 SPQE %x %x %x:%x pos %d\n",
+ spe->hdr.conn_and_cmd_data, spe->hdr.type,
+ spe->data.update_data_addr.hi,
+ spe->data.update_data_addr.lo,
+ bp->cnic_kwq_pending);
+
+ if (bp->cnic_kwq_prod == bp->cnic_kwq_last)
+ bp->cnic_kwq_prod = bp->cnic_kwq;
+ else
+ bp->cnic_kwq_prod++;
+ }
+
+ spin_unlock_bh(&bp->spq_lock);
+
+ if (bp->cnic_spq_pending < bp->cnic_eth_dev.max_kwqe_pending)
+ bnx2x_cnic_sp_post(bp, 0);
+
+ return i;
+}
+
+static int bnx2x_cnic_ctl_send(struct bnx2x *bp, struct cnic_ctl_info *ctl)
+{
+ struct cnic_ops *c_ops;
+ int rc = 0;
+
+ mutex_lock(&bp->cnic_mutex);
+ c_ops = rcu_dereference_protected(bp->cnic_ops,
+ lockdep_is_held(&bp->cnic_mutex));
+ if (c_ops)
+ rc = c_ops->cnic_ctl(bp->cnic_data, ctl);
+ mutex_unlock(&bp->cnic_mutex);
+
+ return rc;
+}
+
+static int bnx2x_cnic_ctl_send_bh(struct bnx2x *bp, struct cnic_ctl_info *ctl)
+{
+ struct cnic_ops *c_ops;
+ int rc = 0;
+
+ rcu_read_lock();
+ c_ops = rcu_dereference(bp->cnic_ops);
+ if (c_ops)
+ rc = c_ops->cnic_ctl(bp->cnic_data, ctl);
+ rcu_read_unlock();
+
+ return rc;
+}
+
+/*
+ * for commands that have no data
+ */
+int bnx2x_cnic_notify(struct bnx2x *bp, int cmd)
+{
+ struct cnic_ctl_info ctl = {0};
+
+ ctl.cmd = cmd;
+
+ return bnx2x_cnic_ctl_send(bp, &ctl);
+}
+
+static void bnx2x_cnic_cfc_comp(struct bnx2x *bp, int cid, u8 err)
+{
+ struct cnic_ctl_info ctl = {0};
+
+ /* first we tell CNIC and only then we count this as a completion */
+ ctl.cmd = CNIC_CTL_COMPLETION_CMD;
+ ctl.data.comp.cid = cid;
+ ctl.data.comp.error = err;
+
+ bnx2x_cnic_ctl_send_bh(bp, &ctl);
+ bnx2x_cnic_sp_post(bp, 0);
+}
+
+
+/* Called with netif_addr_lock_bh() taken.
+ * Sets an rx_mode config for an iSCSI ETH client.
+ * Doesn't block.
+ * Completion should be checked outside.
+ */
+static void bnx2x_set_iscsi_eth_rx_mode(struct bnx2x *bp, bool start)
+{
+ unsigned long accept_flags = 0, ramrod_flags = 0;
+ u8 cl_id = bnx2x_cnic_eth_cl_id(bp, BNX2X_ISCSI_ETH_CL_ID_IDX);
+ int sched_state = BNX2X_FILTER_ISCSI_ETH_STOP_SCHED;
+
+ if (start) {
+ /* Start accepting on iSCSI L2 ring. Accept all multicasts
+ * because it's the only way for UIO Queue to accept
+ * multicasts (in non-promiscuous mode only one Queue per
+ * function will receive multicast packets (leading in our
+ * case).
+ */
+ __set_bit(BNX2X_ACCEPT_UNICAST, &accept_flags);
+ __set_bit(BNX2X_ACCEPT_ALL_MULTICAST, &accept_flags);
+ __set_bit(BNX2X_ACCEPT_BROADCAST, &accept_flags);
+ __set_bit(BNX2X_ACCEPT_ANY_VLAN, &accept_flags);
+
+ /* Clear STOP_PENDING bit if START is requested */
+ clear_bit(BNX2X_FILTER_ISCSI_ETH_STOP_SCHED, &bp->sp_state);
+
+ sched_state = BNX2X_FILTER_ISCSI_ETH_START_SCHED;
+ } else
+ /* Clear START_PENDING bit if STOP is requested */
+ clear_bit(BNX2X_FILTER_ISCSI_ETH_START_SCHED, &bp->sp_state);
+
+ if (test_bit(BNX2X_FILTER_RX_MODE_PENDING, &bp->sp_state))
+ set_bit(sched_state, &bp->sp_state);
+ else {
+ __set_bit(RAMROD_RX, &ramrod_flags);
+ bnx2x_set_q_rx_mode(bp, cl_id, 0, accept_flags, 0,
+ ramrod_flags);
+ }
+}
+
+
+static int bnx2x_drv_ctl(struct net_device *dev, struct drv_ctl_info *ctl)
+{
+ struct bnx2x *bp = netdev_priv(dev);
+ int rc = 0;
+
+ switch (ctl->cmd) {
+ case DRV_CTL_CTXTBL_WR_CMD: {
+ u32 index = ctl->data.io.offset;
+ dma_addr_t addr = ctl->data.io.dma_addr;
+
+ bnx2x_ilt_wr(bp, index, addr);
+ break;
+ }
+
+ case DRV_CTL_RET_L5_SPQ_CREDIT_CMD: {
+ int count = ctl->data.credit.credit_count;
+
+ bnx2x_cnic_sp_post(bp, count);
+ break;
+ }
+
+ /* rtnl_lock is held. */
+ case DRV_CTL_START_L2_CMD: {
+ struct cnic_eth_dev *cp = &bp->cnic_eth_dev;
+ unsigned long sp_bits = 0;
+
+ /* Configure the iSCSI classification object */
+ bnx2x_init_mac_obj(bp, &bp->iscsi_l2_mac_obj,
+ cp->iscsi_l2_client_id,
+ cp->iscsi_l2_cid, BP_FUNC(bp),
+ bnx2x_sp(bp, mac_rdata),
+ bnx2x_sp_mapping(bp, mac_rdata),
+ BNX2X_FILTER_MAC_PENDING,
+ &bp->sp_state, BNX2X_OBJ_TYPE_RX,
+ &bp->macs_pool);
+
+ /* Set iSCSI MAC address */
+ rc = bnx2x_set_iscsi_eth_mac_addr(bp);
+ if (rc)
+ break;
+
+ mmiowb();
+ barrier();
+
+ /* Start accepting on iSCSI L2 ring */
+
+ netif_addr_lock_bh(dev);
+ bnx2x_set_iscsi_eth_rx_mode(bp, true);
+ netif_addr_unlock_bh(dev);
+
+ /* bits to wait on */
+ __set_bit(BNX2X_FILTER_RX_MODE_PENDING, &sp_bits);
+ __set_bit(BNX2X_FILTER_ISCSI_ETH_START_SCHED, &sp_bits);
+
+ if (!bnx2x_wait_sp_comp(bp, sp_bits))
+ BNX2X_ERR("rx_mode completion timed out!\n");
+
+ break;
+ }
+
+ /* rtnl_lock is held. */
+ case DRV_CTL_STOP_L2_CMD: {
+ unsigned long sp_bits = 0;
+
+ /* Stop accepting on iSCSI L2 ring */
+ netif_addr_lock_bh(dev);
+ bnx2x_set_iscsi_eth_rx_mode(bp, false);
+ netif_addr_unlock_bh(dev);
+
+ /* bits to wait on */
+ __set_bit(BNX2X_FILTER_RX_MODE_PENDING, &sp_bits);
+ __set_bit(BNX2X_FILTER_ISCSI_ETH_STOP_SCHED, &sp_bits);
+
+ if (!bnx2x_wait_sp_comp(bp, sp_bits))
+ BNX2X_ERR("rx_mode completion timed out!\n");
+
+ mmiowb();
+ barrier();
+
+ /* Unset iSCSI L2 MAC */
+ rc = bnx2x_del_all_macs(bp, &bp->iscsi_l2_mac_obj,
+ BNX2X_ISCSI_ETH_MAC, true);
+ break;
+ }
+ case DRV_CTL_RET_L2_SPQ_CREDIT_CMD: {
+ int count = ctl->data.credit.credit_count;
+
+ smp_mb__before_atomic_inc();
+ atomic_add(count, &bp->cq_spq_left);
+ smp_mb__after_atomic_inc();
+ break;
+ }
+
+ default:
+ BNX2X_ERR("unknown command %x\n", ctl->cmd);
+ rc = -EINVAL;
+ }
+
+ return rc;
+}
+
+void bnx2x_setup_cnic_irq_info(struct bnx2x *bp)
+{
+ struct cnic_eth_dev *cp = &bp->cnic_eth_dev;
+
+ if (bp->flags & USING_MSIX_FLAG) {
+ cp->drv_state |= CNIC_DRV_STATE_USING_MSIX;
+ cp->irq_arr[0].irq_flags |= CNIC_IRQ_FL_MSIX;
+ cp->irq_arr[0].vector = bp->msix_table[1].vector;
+ } else {
+ cp->drv_state &= ~CNIC_DRV_STATE_USING_MSIX;
+ cp->irq_arr[0].irq_flags &= ~CNIC_IRQ_FL_MSIX;
+ }
+ if (!CHIP_IS_E1x(bp))
+ cp->irq_arr[0].status_blk = (void *)bp->cnic_sb.e2_sb;
+ else
+ cp->irq_arr[0].status_blk = (void *)bp->cnic_sb.e1x_sb;
+
+ cp->irq_arr[0].status_blk_num = bnx2x_cnic_fw_sb_id(bp);
+ cp->irq_arr[0].status_blk_num2 = bnx2x_cnic_igu_sb_id(bp);
+ cp->irq_arr[1].status_blk = bp->def_status_blk;
+ cp->irq_arr[1].status_blk_num = DEF_SB_ID;
+ cp->irq_arr[1].status_blk_num2 = DEF_SB_IGU_ID;
+
+ cp->num_irq = 2;
+}
+
+static int bnx2x_register_cnic(struct net_device *dev, struct cnic_ops *ops,
+ void *data)
+{
+ struct bnx2x *bp = netdev_priv(dev);
+ struct cnic_eth_dev *cp = &bp->cnic_eth_dev;
+
+ if (ops == NULL)
+ return -EINVAL;
+
+ bp->cnic_kwq = kzalloc(PAGE_SIZE, GFP_KERNEL);
+ if (!bp->cnic_kwq)
+ return -ENOMEM;
+
+ bp->cnic_kwq_cons = bp->cnic_kwq;
+ bp->cnic_kwq_prod = bp->cnic_kwq;
+ bp->cnic_kwq_last = bp->cnic_kwq + MAX_SP_DESC_CNT;
+
+ bp->cnic_spq_pending = 0;
+ bp->cnic_kwq_pending = 0;
+
+ bp->cnic_data = data;
+
+ cp->num_irq = 0;
+ cp->drv_state |= CNIC_DRV_STATE_REGD;
+ cp->iro_arr = bp->iro_arr;
+
+ bnx2x_setup_cnic_irq_info(bp);
+
+ rcu_assign_pointer(bp->cnic_ops, ops);
+
+ return 0;
+}
+
+static int bnx2x_unregister_cnic(struct net_device *dev)
+{
+ struct bnx2x *bp = netdev_priv(dev);
+ struct cnic_eth_dev *cp = &bp->cnic_eth_dev;
+
+ mutex_lock(&bp->cnic_mutex);
+ cp->drv_state = 0;
+ rcu_assign_pointer(bp->cnic_ops, NULL);
+ mutex_unlock(&bp->cnic_mutex);
+ synchronize_rcu();
+ kfree(bp->cnic_kwq);
+ bp->cnic_kwq = NULL;
+
+ return 0;
+}
+
+struct cnic_eth_dev *bnx2x_cnic_probe(struct net_device *dev)
+{
+ struct bnx2x *bp = netdev_priv(dev);
+ struct cnic_eth_dev *cp = &bp->cnic_eth_dev;
+
+ /* If both iSCSI and FCoE are disabled - return NULL in
+ * order to indicate CNIC that it should not try to work
+ * with this device.
+ */
+ if (NO_ISCSI(bp) && NO_FCOE(bp))
+ return NULL;
+
+ cp->drv_owner = THIS_MODULE;
+ cp->chip_id = CHIP_ID(bp);
+ cp->pdev = bp->pdev;
+ cp->io_base = bp->regview;
+ cp->io_base2 = bp->doorbells;
+ cp->max_kwqe_pending = 8;
+ cp->ctx_blk_size = CDU_ILT_PAGE_SZ;
+ cp->ctx_tbl_offset = FUNC_ILT_BASE(BP_FUNC(bp)) +
+ bnx2x_cid_ilt_lines(bp);
+ cp->ctx_tbl_len = CNIC_ILT_LINES;
+ cp->starting_cid = bnx2x_cid_ilt_lines(bp) * ILT_PAGE_CIDS;
+ cp->drv_submit_kwqes_16 = bnx2x_cnic_sp_queue;
+ cp->drv_ctl = bnx2x_drv_ctl;
+ cp->drv_register_cnic = bnx2x_register_cnic;
+ cp->drv_unregister_cnic = bnx2x_unregister_cnic;
+ cp->fcoe_init_cid = BNX2X_FCOE_ETH_CID;
+ cp->iscsi_l2_client_id =
+ bnx2x_cnic_eth_cl_id(bp, BNX2X_ISCSI_ETH_CL_ID_IDX);
+ cp->iscsi_l2_cid = BNX2X_ISCSI_ETH_CID;
+
+ if (NO_ISCSI_OOO(bp))
+ cp->drv_state |= CNIC_DRV_STATE_NO_ISCSI_OOO;
+
+ if (NO_ISCSI(bp))
+ cp->drv_state |= CNIC_DRV_STATE_NO_ISCSI;
+
+ if (NO_FCOE(bp))
+ cp->drv_state |= CNIC_DRV_STATE_NO_FCOE;
+
+ DP(BNX2X_MSG_SP, "page_size %d, tbl_offset %d, tbl_lines %d, "
+ "starting cid %d\n",
+ cp->ctx_blk_size,
+ cp->ctx_tbl_offset,
+ cp->ctx_tbl_len,
+ cp->starting_cid);
+ return cp;
+}
+EXPORT_SYMBOL(bnx2x_cnic_probe);
+
+#endif /* BCM_CNIC */
+
--- /dev/null
- /* Set vlan tag */
- if (fcb->flags & RXFCB_VLN)
+/*
+ * drivers/net/gianfar.c
+ *
+ * Gianfar Ethernet Driver
+ * This driver is designed for the non-CPM ethernet controllers
+ * on the 85xx and 83xx family of integrated processors
+ * Based on 8260_io/fcc_enet.c
+ *
+ * Author: Andy Fleming
+ * Maintainer: Kumar Gala
+ * Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com>
+ *
+ * Copyright 2002-2009, 2011 Freescale Semiconductor, Inc.
+ * Copyright 2007 MontaVista Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * Gianfar: AKA Lambda Draconis, "Dragon"
+ * RA 11 31 24.2
+ * Dec +69 19 52
+ * V 3.84
+ * B-V +1.62
+ *
+ * Theory of operation
+ *
+ * The driver is initialized through of_device. Configuration information
+ * is therefore conveyed through an OF-style device tree.
+ *
+ * The Gianfar Ethernet Controller uses a ring of buffer
+ * descriptors. The beginning is indicated by a register
+ * pointing to the physical address of the start of the ring.
+ * The end is determined by a "wrap" bit being set in the
+ * last descriptor of the ring.
+ *
+ * When a packet is received, the RXF bit in the
+ * IEVENT register is set, triggering an interrupt when the
+ * corresponding bit in the IMASK register is also set (if
+ * interrupt coalescing is active, then the interrupt may not
+ * happen immediately, but will wait until either a set number
+ * of frames or amount of time have passed). In NAPI, the
+ * interrupt handler will signal there is work to be done, and
+ * exit. This method will start at the last known empty
+ * descriptor, and process every subsequent descriptor until there
+ * are none left with data (NAPI will stop after a set number of
+ * packets to give time to other tasks, but will eventually
+ * process all the packets). The data arrives inside a
+ * pre-allocated skb, and so after the skb is passed up to the
+ * stack, a new skb must be allocated, and the address field in
+ * the buffer descriptor must be updated to indicate this new
+ * skb.
+ *
+ * When the kernel requests that a packet be transmitted, the
+ * driver starts where it left off last time, and points the
+ * descriptor at the buffer which was passed in. The driver
+ * then informs the DMA engine that there are packets ready to
+ * be transmitted. Once the controller is finished transmitting
+ * the packet, an interrupt may be triggered (under the same
+ * conditions as for reception, but depending on the TXF bit).
+ * The driver then cleans up the buffer.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+#define DEBUG
+
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/unistd.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/if_vlan.h>
+#include <linux/spinlock.h>
+#include <linux/mm.h>
+#include <linux/of_mdio.h>
+#include <linux/of_platform.h>
+#include <linux/ip.h>
+#include <linux/tcp.h>
+#include <linux/udp.h>
+#include <linux/in.h>
+#include <linux/net_tstamp.h>
+
+#include <asm/io.h>
+#include <asm/reg.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+#include <linux/module.h>
+#include <linux/dma-mapping.h>
+#include <linux/crc32.h>
+#include <linux/mii.h>
+#include <linux/phy.h>
+#include <linux/phy_fixed.h>
+#include <linux/of.h>
+#include <linux/of_net.h>
+
+#include "gianfar.h"
+#include "fsl_pq_mdio.h"
+
+#define TX_TIMEOUT (1*HZ)
+#undef BRIEF_GFAR_ERRORS
+#undef VERBOSE_GFAR_ERRORS
+
+const char gfar_driver_name[] = "Gianfar Ethernet";
+const char gfar_driver_version[] = "1.3";
+
+static int gfar_enet_open(struct net_device *dev);
+static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev);
+static void gfar_reset_task(struct work_struct *work);
+static void gfar_timeout(struct net_device *dev);
+static int gfar_close(struct net_device *dev);
+struct sk_buff *gfar_new_skb(struct net_device *dev);
+static void gfar_new_rxbdp(struct gfar_priv_rx_q *rx_queue, struct rxbd8 *bdp,
+ struct sk_buff *skb);
+static int gfar_set_mac_address(struct net_device *dev);
+static int gfar_change_mtu(struct net_device *dev, int new_mtu);
+static irqreturn_t gfar_error(int irq, void *dev_id);
+static irqreturn_t gfar_transmit(int irq, void *dev_id);
+static irqreturn_t gfar_interrupt(int irq, void *dev_id);
+static void adjust_link(struct net_device *dev);
+static void init_registers(struct net_device *dev);
+static int init_phy(struct net_device *dev);
+static int gfar_probe(struct platform_device *ofdev);
+static int gfar_remove(struct platform_device *ofdev);
+static void free_skb_resources(struct gfar_private *priv);
+static void gfar_set_multi(struct net_device *dev);
+static void gfar_set_hash_for_addr(struct net_device *dev, u8 *addr);
+static void gfar_configure_serdes(struct net_device *dev);
+static int gfar_poll(struct napi_struct *napi, int budget);
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void gfar_netpoll(struct net_device *dev);
+#endif
+int gfar_clean_rx_ring(struct gfar_priv_rx_q *rx_queue, int rx_work_limit);
+static int gfar_clean_tx_ring(struct gfar_priv_tx_q *tx_queue);
+static int gfar_process_frame(struct net_device *dev, struct sk_buff *skb,
+ int amount_pull);
+void gfar_halt(struct net_device *dev);
+static void gfar_halt_nodisable(struct net_device *dev);
+void gfar_start(struct net_device *dev);
+static void gfar_clear_exact_match(struct net_device *dev);
+static void gfar_set_mac_for_addr(struct net_device *dev, int num,
+ const u8 *addr);
+static int gfar_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
+
+MODULE_AUTHOR("Freescale Semiconductor, Inc");
+MODULE_DESCRIPTION("Gianfar Ethernet Driver");
+MODULE_LICENSE("GPL");
+
+static void gfar_init_rxbdp(struct gfar_priv_rx_q *rx_queue, struct rxbd8 *bdp,
+ dma_addr_t buf)
+{
+ u32 lstatus;
+
+ bdp->bufPtr = buf;
+
+ lstatus = BD_LFLAG(RXBD_EMPTY | RXBD_INTERRUPT);
+ if (bdp == rx_queue->rx_bd_base + rx_queue->rx_ring_size - 1)
+ lstatus |= BD_LFLAG(RXBD_WRAP);
+
+ eieio();
+
+ bdp->lstatus = lstatus;
+}
+
+static int gfar_init_bds(struct net_device *ndev)
+{
+ struct gfar_private *priv = netdev_priv(ndev);
+ struct gfar_priv_tx_q *tx_queue = NULL;
+ struct gfar_priv_rx_q *rx_queue = NULL;
+ struct txbd8 *txbdp;
+ struct rxbd8 *rxbdp;
+ int i, j;
+
+ for (i = 0; i < priv->num_tx_queues; i++) {
+ tx_queue = priv->tx_queue[i];
+ /* Initialize some variables in our dev structure */
+ tx_queue->num_txbdfree = tx_queue->tx_ring_size;
+ tx_queue->dirty_tx = tx_queue->tx_bd_base;
+ tx_queue->cur_tx = tx_queue->tx_bd_base;
+ tx_queue->skb_curtx = 0;
+ tx_queue->skb_dirtytx = 0;
+
+ /* Initialize Transmit Descriptor Ring */
+ txbdp = tx_queue->tx_bd_base;
+ for (j = 0; j < tx_queue->tx_ring_size; j++) {
+ txbdp->lstatus = 0;
+ txbdp->bufPtr = 0;
+ txbdp++;
+ }
+
+ /* Set the last descriptor in the ring to indicate wrap */
+ txbdp--;
+ txbdp->status |= TXBD_WRAP;
+ }
+
+ for (i = 0; i < priv->num_rx_queues; i++) {
+ rx_queue = priv->rx_queue[i];
+ rx_queue->cur_rx = rx_queue->rx_bd_base;
+ rx_queue->skb_currx = 0;
+ rxbdp = rx_queue->rx_bd_base;
+
+ for (j = 0; j < rx_queue->rx_ring_size; j++) {
+ struct sk_buff *skb = rx_queue->rx_skbuff[j];
+
+ if (skb) {
+ gfar_init_rxbdp(rx_queue, rxbdp,
+ rxbdp->bufPtr);
+ } else {
+ skb = gfar_new_skb(ndev);
+ if (!skb) {
+ netdev_err(ndev, "Can't allocate RX buffers\n");
+ goto err_rxalloc_fail;
+ }
+ rx_queue->rx_skbuff[j] = skb;
+
+ gfar_new_rxbdp(rx_queue, rxbdp, skb);
+ }
+
+ rxbdp++;
+ }
+
+ }
+
+ return 0;
+
+err_rxalloc_fail:
+ free_skb_resources(priv);
+ return -ENOMEM;
+}
+
+static int gfar_alloc_skb_resources(struct net_device *ndev)
+{
+ void *vaddr;
+ dma_addr_t addr;
+ int i, j, k;
+ struct gfar_private *priv = netdev_priv(ndev);
+ struct device *dev = &priv->ofdev->dev;
+ struct gfar_priv_tx_q *tx_queue = NULL;
+ struct gfar_priv_rx_q *rx_queue = NULL;
+
+ priv->total_tx_ring_size = 0;
+ for (i = 0; i < priv->num_tx_queues; i++)
+ priv->total_tx_ring_size += priv->tx_queue[i]->tx_ring_size;
+
+ priv->total_rx_ring_size = 0;
+ for (i = 0; i < priv->num_rx_queues; i++)
+ priv->total_rx_ring_size += priv->rx_queue[i]->rx_ring_size;
+
+ /* Allocate memory for the buffer descriptors */
+ vaddr = dma_alloc_coherent(dev,
+ sizeof(struct txbd8) * priv->total_tx_ring_size +
+ sizeof(struct rxbd8) * priv->total_rx_ring_size,
+ &addr, GFP_KERNEL);
+ if (!vaddr) {
+ netif_err(priv, ifup, ndev,
+ "Could not allocate buffer descriptors!\n");
+ return -ENOMEM;
+ }
+
+ for (i = 0; i < priv->num_tx_queues; i++) {
+ tx_queue = priv->tx_queue[i];
+ tx_queue->tx_bd_base = vaddr;
+ tx_queue->tx_bd_dma_base = addr;
+ tx_queue->dev = ndev;
+ /* enet DMA only understands physical addresses */
+ addr += sizeof(struct txbd8) *tx_queue->tx_ring_size;
+ vaddr += sizeof(struct txbd8) *tx_queue->tx_ring_size;
+ }
+
+ /* Start the rx descriptor ring where the tx ring leaves off */
+ for (i = 0; i < priv->num_rx_queues; i++) {
+ rx_queue = priv->rx_queue[i];
+ rx_queue->rx_bd_base = vaddr;
+ rx_queue->rx_bd_dma_base = addr;
+ rx_queue->dev = ndev;
+ addr += sizeof (struct rxbd8) * rx_queue->rx_ring_size;
+ vaddr += sizeof (struct rxbd8) * rx_queue->rx_ring_size;
+ }
+
+ /* Setup the skbuff rings */
+ for (i = 0; i < priv->num_tx_queues; i++) {
+ tx_queue = priv->tx_queue[i];
+ tx_queue->tx_skbuff = kmalloc(sizeof(*tx_queue->tx_skbuff) *
+ tx_queue->tx_ring_size, GFP_KERNEL);
+ if (!tx_queue->tx_skbuff) {
+ netif_err(priv, ifup, ndev,
+ "Could not allocate tx_skbuff\n");
+ goto cleanup;
+ }
+
+ for (k = 0; k < tx_queue->tx_ring_size; k++)
+ tx_queue->tx_skbuff[k] = NULL;
+ }
+
+ for (i = 0; i < priv->num_rx_queues; i++) {
+ rx_queue = priv->rx_queue[i];
+ rx_queue->rx_skbuff = kmalloc(sizeof(*rx_queue->rx_skbuff) *
+ rx_queue->rx_ring_size, GFP_KERNEL);
+
+ if (!rx_queue->rx_skbuff) {
+ netif_err(priv, ifup, ndev,
+ "Could not allocate rx_skbuff\n");
+ goto cleanup;
+ }
+
+ for (j = 0; j < rx_queue->rx_ring_size; j++)
+ rx_queue->rx_skbuff[j] = NULL;
+ }
+
+ if (gfar_init_bds(ndev))
+ goto cleanup;
+
+ return 0;
+
+cleanup:
+ free_skb_resources(priv);
+ return -ENOMEM;
+}
+
+static void gfar_init_tx_rx_base(struct gfar_private *priv)
+{
+ struct gfar __iomem *regs = priv->gfargrp[0].regs;
+ u32 __iomem *baddr;
+ int i;
+
+ baddr = ®s->tbase0;
+ for(i = 0; i < priv->num_tx_queues; i++) {
+ gfar_write(baddr, priv->tx_queue[i]->tx_bd_dma_base);
+ baddr += 2;
+ }
+
+ baddr = ®s->rbase0;
+ for(i = 0; i < priv->num_rx_queues; i++) {
+ gfar_write(baddr, priv->rx_queue[i]->rx_bd_dma_base);
+ baddr += 2;
+ }
+}
+
+static void gfar_init_mac(struct net_device *ndev)
+{
+ struct gfar_private *priv = netdev_priv(ndev);
+ struct gfar __iomem *regs = priv->gfargrp[0].regs;
+ u32 rctrl = 0;
+ u32 tctrl = 0;
+ u32 attrs = 0;
+
+ /* write the tx/rx base registers */
+ gfar_init_tx_rx_base(priv);
+
+ /* Configure the coalescing support */
+ gfar_configure_coalescing(priv, 0xFF, 0xFF);
+
+ if (priv->rx_filer_enable) {
+ rctrl |= RCTRL_FILREN;
+ /* Program the RIR0 reg with the required distribution */
+ gfar_write(®s->rir0, DEFAULT_RIR0);
+ }
+
+ if (ndev->features & NETIF_F_RXCSUM)
+ rctrl |= RCTRL_CHECKSUMMING;
+
+ if (priv->extended_hash) {
+ rctrl |= RCTRL_EXTHASH;
+
+ gfar_clear_exact_match(ndev);
+ rctrl |= RCTRL_EMEN;
+ }
+
+ if (priv->padding) {
+ rctrl &= ~RCTRL_PAL_MASK;
+ rctrl |= RCTRL_PADDING(priv->padding);
+ }
+
+ /* Insert receive time stamps into padding alignment bytes */
+ if (priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER) {
+ rctrl &= ~RCTRL_PAL_MASK;
+ rctrl |= RCTRL_PADDING(8);
+ priv->padding = 8;
+ }
+
+ /* Enable HW time stamping if requested from user space */
+ if (priv->hwts_rx_en)
+ rctrl |= RCTRL_PRSDEP_INIT | RCTRL_TS_ENABLE;
+
+ if (ndev->features & NETIF_F_HW_VLAN_RX)
+ rctrl |= RCTRL_VLEX | RCTRL_PRSDEP_INIT;
+
+ /* Init rctrl based on our settings */
+ gfar_write(®s->rctrl, rctrl);
+
+ if (ndev->features & NETIF_F_IP_CSUM)
+ tctrl |= TCTRL_INIT_CSUM;
+
+ tctrl |= TCTRL_TXSCHED_PRIO;
+
+ gfar_write(®s->tctrl, tctrl);
+
+ /* Set the extraction length and index */
+ attrs = ATTRELI_EL(priv->rx_stash_size) |
+ ATTRELI_EI(priv->rx_stash_index);
+
+ gfar_write(®s->attreli, attrs);
+
+ /* Start with defaults, and add stashing or locking
+ * depending on the approprate variables */
+ attrs = ATTR_INIT_SETTINGS;
+
+ if (priv->bd_stash_en)
+ attrs |= ATTR_BDSTASH;
+
+ if (priv->rx_stash_size != 0)
+ attrs |= ATTR_BUFSTASH;
+
+ gfar_write(®s->attr, attrs);
+
+ gfar_write(®s->fifo_tx_thr, priv->fifo_threshold);
+ gfar_write(®s->fifo_tx_starve, priv->fifo_starve);
+ gfar_write(®s->fifo_tx_starve_shutoff, priv->fifo_starve_off);
+}
+
+static struct net_device_stats *gfar_get_stats(struct net_device *dev)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ unsigned long rx_packets = 0, rx_bytes = 0, rx_dropped = 0;
+ unsigned long tx_packets = 0, tx_bytes = 0;
+ int i = 0;
+
+ for (i = 0; i < priv->num_rx_queues; i++) {
+ rx_packets += priv->rx_queue[i]->stats.rx_packets;
+ rx_bytes += priv->rx_queue[i]->stats.rx_bytes;
+ rx_dropped += priv->rx_queue[i]->stats.rx_dropped;
+ }
+
+ dev->stats.rx_packets = rx_packets;
+ dev->stats.rx_bytes = rx_bytes;
+ dev->stats.rx_dropped = rx_dropped;
+
+ for (i = 0; i < priv->num_tx_queues; i++) {
+ tx_bytes += priv->tx_queue[i]->stats.tx_bytes;
+ tx_packets += priv->tx_queue[i]->stats.tx_packets;
+ }
+
+ dev->stats.tx_bytes = tx_bytes;
+ dev->stats.tx_packets = tx_packets;
+
+ return &dev->stats;
+}
+
+static const struct net_device_ops gfar_netdev_ops = {
+ .ndo_open = gfar_enet_open,
+ .ndo_start_xmit = gfar_start_xmit,
+ .ndo_stop = gfar_close,
+ .ndo_change_mtu = gfar_change_mtu,
+ .ndo_set_features = gfar_set_features,
+ .ndo_set_rx_mode = gfar_set_multi,
+ .ndo_tx_timeout = gfar_timeout,
+ .ndo_do_ioctl = gfar_ioctl,
+ .ndo_get_stats = gfar_get_stats,
+ .ndo_set_mac_address = eth_mac_addr,
+ .ndo_validate_addr = eth_validate_addr,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = gfar_netpoll,
+#endif
+};
+
+void lock_rx_qs(struct gfar_private *priv)
+{
+ int i = 0x0;
+
+ for (i = 0; i < priv->num_rx_queues; i++)
+ spin_lock(&priv->rx_queue[i]->rxlock);
+}
+
+void lock_tx_qs(struct gfar_private *priv)
+{
+ int i = 0x0;
+
+ for (i = 0; i < priv->num_tx_queues; i++)
+ spin_lock(&priv->tx_queue[i]->txlock);
+}
+
+void unlock_rx_qs(struct gfar_private *priv)
+{
+ int i = 0x0;
+
+ for (i = 0; i < priv->num_rx_queues; i++)
+ spin_unlock(&priv->rx_queue[i]->rxlock);
+}
+
+void unlock_tx_qs(struct gfar_private *priv)
+{
+ int i = 0x0;
+
+ for (i = 0; i < priv->num_tx_queues; i++)
+ spin_unlock(&priv->tx_queue[i]->txlock);
+}
+
+static bool gfar_is_vlan_on(struct gfar_private *priv)
+{
+ return (priv->ndev->features & NETIF_F_HW_VLAN_RX) ||
+ (priv->ndev->features & NETIF_F_HW_VLAN_TX);
+}
+
+/* Returns 1 if incoming frames use an FCB */
+static inline int gfar_uses_fcb(struct gfar_private *priv)
+{
+ return gfar_is_vlan_on(priv) ||
+ (priv->ndev->features & NETIF_F_RXCSUM) ||
+ (priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER);
+}
+
+static void free_tx_pointers(struct gfar_private *priv)
+{
+ int i = 0;
+
+ for (i = 0; i < priv->num_tx_queues; i++)
+ kfree(priv->tx_queue[i]);
+}
+
+static void free_rx_pointers(struct gfar_private *priv)
+{
+ int i = 0;
+
+ for (i = 0; i < priv->num_rx_queues; i++)
+ kfree(priv->rx_queue[i]);
+}
+
+static void unmap_group_regs(struct gfar_private *priv)
+{
+ int i = 0;
+
+ for (i = 0; i < MAXGROUPS; i++)
+ if (priv->gfargrp[i].regs)
+ iounmap(priv->gfargrp[i].regs);
+}
+
+static void disable_napi(struct gfar_private *priv)
+{
+ int i = 0;
+
+ for (i = 0; i < priv->num_grps; i++)
+ napi_disable(&priv->gfargrp[i].napi);
+}
+
+static void enable_napi(struct gfar_private *priv)
+{
+ int i = 0;
+
+ for (i = 0; i < priv->num_grps; i++)
+ napi_enable(&priv->gfargrp[i].napi);
+}
+
+static int gfar_parse_group(struct device_node *np,
+ struct gfar_private *priv, const char *model)
+{
+ u32 *queue_mask;
+
+ priv->gfargrp[priv->num_grps].regs = of_iomap(np, 0);
+ if (!priv->gfargrp[priv->num_grps].regs)
+ return -ENOMEM;
+
+ priv->gfargrp[priv->num_grps].interruptTransmit =
+ irq_of_parse_and_map(np, 0);
+
+ /* If we aren't the FEC we have multiple interrupts */
+ if (model && strcasecmp(model, "FEC")) {
+ priv->gfargrp[priv->num_grps].interruptReceive =
+ irq_of_parse_and_map(np, 1);
+ priv->gfargrp[priv->num_grps].interruptError =
+ irq_of_parse_and_map(np,2);
+ if (priv->gfargrp[priv->num_grps].interruptTransmit == NO_IRQ ||
+ priv->gfargrp[priv->num_grps].interruptReceive == NO_IRQ ||
+ priv->gfargrp[priv->num_grps].interruptError == NO_IRQ)
+ return -EINVAL;
+ }
+
+ priv->gfargrp[priv->num_grps].grp_id = priv->num_grps;
+ priv->gfargrp[priv->num_grps].priv = priv;
+ spin_lock_init(&priv->gfargrp[priv->num_grps].grplock);
+ if(priv->mode == MQ_MG_MODE) {
+ queue_mask = (u32 *)of_get_property(np,
+ "fsl,rx-bit-map", NULL);
+ priv->gfargrp[priv->num_grps].rx_bit_map =
+ queue_mask ? *queue_mask :(DEFAULT_MAPPING >> priv->num_grps);
+ queue_mask = (u32 *)of_get_property(np,
+ "fsl,tx-bit-map", NULL);
+ priv->gfargrp[priv->num_grps].tx_bit_map =
+ queue_mask ? *queue_mask : (DEFAULT_MAPPING >> priv->num_grps);
+ } else {
+ priv->gfargrp[priv->num_grps].rx_bit_map = 0xFF;
+ priv->gfargrp[priv->num_grps].tx_bit_map = 0xFF;
+ }
+ priv->num_grps++;
+
+ return 0;
+}
+
+static int gfar_of_init(struct platform_device *ofdev, struct net_device **pdev)
+{
+ const char *model;
+ const char *ctype;
+ const void *mac_addr;
+ int err = 0, i;
+ struct net_device *dev = NULL;
+ struct gfar_private *priv = NULL;
+ struct device_node *np = ofdev->dev.of_node;
+ struct device_node *child = NULL;
+ const u32 *stash;
+ const u32 *stash_len;
+ const u32 *stash_idx;
+ unsigned int num_tx_qs, num_rx_qs;
+ u32 *tx_queues, *rx_queues;
+
+ if (!np || !of_device_is_available(np))
+ return -ENODEV;
+
+ /* parse the num of tx and rx queues */
+ tx_queues = (u32 *)of_get_property(np, "fsl,num_tx_queues", NULL);
+ num_tx_qs = tx_queues ? *tx_queues : 1;
+
+ if (num_tx_qs > MAX_TX_QS) {
+ pr_err("num_tx_qs(=%d) greater than MAX_TX_QS(=%d)\n",
+ num_tx_qs, MAX_TX_QS);
+ pr_err("Cannot do alloc_etherdev, aborting\n");
+ return -EINVAL;
+ }
+
+ rx_queues = (u32 *)of_get_property(np, "fsl,num_rx_queues", NULL);
+ num_rx_qs = rx_queues ? *rx_queues : 1;
+
+ if (num_rx_qs > MAX_RX_QS) {
+ pr_err("num_rx_qs(=%d) greater than MAX_RX_QS(=%d)\n",
+ num_rx_qs, MAX_RX_QS);
+ pr_err("Cannot do alloc_etherdev, aborting\n");
+ return -EINVAL;
+ }
+
+ *pdev = alloc_etherdev_mq(sizeof(*priv), num_tx_qs);
+ dev = *pdev;
+ if (NULL == dev)
+ return -ENOMEM;
+
+ priv = netdev_priv(dev);
+ priv->node = ofdev->dev.of_node;
+ priv->ndev = dev;
+
+ priv->num_tx_queues = num_tx_qs;
+ netif_set_real_num_rx_queues(dev, num_rx_qs);
+ priv->num_rx_queues = num_rx_qs;
+ priv->num_grps = 0x0;
+
+ /* Init Rx queue filer rule set linked list*/
+ INIT_LIST_HEAD(&priv->rx_list.list);
+ priv->rx_list.count = 0;
+ mutex_init(&priv->rx_queue_access);
+
+ model = of_get_property(np, "model", NULL);
+
+ for (i = 0; i < MAXGROUPS; i++)
+ priv->gfargrp[i].regs = NULL;
+
+ /* Parse and initialize group specific information */
+ if (of_device_is_compatible(np, "fsl,etsec2")) {
+ priv->mode = MQ_MG_MODE;
+ for_each_child_of_node(np, child) {
+ err = gfar_parse_group(child, priv, model);
+ if (err)
+ goto err_grp_init;
+ }
+ } else {
+ priv->mode = SQ_SG_MODE;
+ err = gfar_parse_group(np, priv, model);
+ if(err)
+ goto err_grp_init;
+ }
+
+ for (i = 0; i < priv->num_tx_queues; i++)
+ priv->tx_queue[i] = NULL;
+ for (i = 0; i < priv->num_rx_queues; i++)
+ priv->rx_queue[i] = NULL;
+
+ for (i = 0; i < priv->num_tx_queues; i++) {
+ priv->tx_queue[i] = kzalloc(sizeof(struct gfar_priv_tx_q),
+ GFP_KERNEL);
+ if (!priv->tx_queue[i]) {
+ err = -ENOMEM;
+ goto tx_alloc_failed;
+ }
+ priv->tx_queue[i]->tx_skbuff = NULL;
+ priv->tx_queue[i]->qindex = i;
+ priv->tx_queue[i]->dev = dev;
+ spin_lock_init(&(priv->tx_queue[i]->txlock));
+ }
+
+ for (i = 0; i < priv->num_rx_queues; i++) {
+ priv->rx_queue[i] = kzalloc(sizeof(struct gfar_priv_rx_q),
+ GFP_KERNEL);
+ if (!priv->rx_queue[i]) {
+ err = -ENOMEM;
+ goto rx_alloc_failed;
+ }
+ priv->rx_queue[i]->rx_skbuff = NULL;
+ priv->rx_queue[i]->qindex = i;
+ priv->rx_queue[i]->dev = dev;
+ spin_lock_init(&(priv->rx_queue[i]->rxlock));
+ }
+
+
+ stash = of_get_property(np, "bd-stash", NULL);
+
+ if (stash) {
+ priv->device_flags |= FSL_GIANFAR_DEV_HAS_BD_STASHING;
+ priv->bd_stash_en = 1;
+ }
+
+ stash_len = of_get_property(np, "rx-stash-len", NULL);
+
+ if (stash_len)
+ priv->rx_stash_size = *stash_len;
+
+ stash_idx = of_get_property(np, "rx-stash-idx", NULL);
+
+ if (stash_idx)
+ priv->rx_stash_index = *stash_idx;
+
+ if (stash_len || stash_idx)
+ priv->device_flags |= FSL_GIANFAR_DEV_HAS_BUF_STASHING;
+
+ mac_addr = of_get_mac_address(np);
+ if (mac_addr)
+ memcpy(dev->dev_addr, mac_addr, MAC_ADDR_LEN);
+
+ if (model && !strcasecmp(model, "TSEC"))
+ priv->device_flags =
+ FSL_GIANFAR_DEV_HAS_GIGABIT |
+ FSL_GIANFAR_DEV_HAS_COALESCE |
+ FSL_GIANFAR_DEV_HAS_RMON |
+ FSL_GIANFAR_DEV_HAS_MULTI_INTR;
+ if (model && !strcasecmp(model, "eTSEC"))
+ priv->device_flags =
+ FSL_GIANFAR_DEV_HAS_GIGABIT |
+ FSL_GIANFAR_DEV_HAS_COALESCE |
+ FSL_GIANFAR_DEV_HAS_RMON |
+ FSL_GIANFAR_DEV_HAS_MULTI_INTR |
+ FSL_GIANFAR_DEV_HAS_PADDING |
+ FSL_GIANFAR_DEV_HAS_CSUM |
+ FSL_GIANFAR_DEV_HAS_VLAN |
+ FSL_GIANFAR_DEV_HAS_MAGIC_PACKET |
+ FSL_GIANFAR_DEV_HAS_EXTENDED_HASH |
+ FSL_GIANFAR_DEV_HAS_TIMER;
+
+ ctype = of_get_property(np, "phy-connection-type", NULL);
+
+ /* We only care about rgmii-id. The rest are autodetected */
+ if (ctype && !strcmp(ctype, "rgmii-id"))
+ priv->interface = PHY_INTERFACE_MODE_RGMII_ID;
+ else
+ priv->interface = PHY_INTERFACE_MODE_MII;
+
+ if (of_get_property(np, "fsl,magic-packet", NULL))
+ priv->device_flags |= FSL_GIANFAR_DEV_HAS_MAGIC_PACKET;
+
+ priv->phy_node = of_parse_phandle(np, "phy-handle", 0);
+
+ /* Find the TBI PHY. If it's not there, we don't support SGMII */
+ priv->tbi_node = of_parse_phandle(np, "tbi-handle", 0);
+
+ return 0;
+
+rx_alloc_failed:
+ free_rx_pointers(priv);
+tx_alloc_failed:
+ free_tx_pointers(priv);
+err_grp_init:
+ unmap_group_regs(priv);
+ free_netdev(dev);
+ return err;
+}
+
+static int gfar_hwtstamp_ioctl(struct net_device *netdev,
+ struct ifreq *ifr, int cmd)
+{
+ struct hwtstamp_config config;
+ struct gfar_private *priv = netdev_priv(netdev);
+
+ if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
+ return -EFAULT;
+
+ /* reserved for future extensions */
+ if (config.flags)
+ return -EINVAL;
+
+ switch (config.tx_type) {
+ case HWTSTAMP_TX_OFF:
+ priv->hwts_tx_en = 0;
+ break;
+ case HWTSTAMP_TX_ON:
+ if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER))
+ return -ERANGE;
+ priv->hwts_tx_en = 1;
+ break;
+ default:
+ return -ERANGE;
+ }
+
+ switch (config.rx_filter) {
+ case HWTSTAMP_FILTER_NONE:
+ if (priv->hwts_rx_en) {
+ stop_gfar(netdev);
+ priv->hwts_rx_en = 0;
+ startup_gfar(netdev);
+ }
+ break;
+ default:
+ if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER))
+ return -ERANGE;
+ if (!priv->hwts_rx_en) {
+ stop_gfar(netdev);
+ priv->hwts_rx_en = 1;
+ startup_gfar(netdev);
+ }
+ config.rx_filter = HWTSTAMP_FILTER_ALL;
+ break;
+ }
+
+ return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ?
+ -EFAULT : 0;
+}
+
+/* Ioctl MII Interface */
+static int gfar_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+
+ if (!netif_running(dev))
+ return -EINVAL;
+
+ if (cmd == SIOCSHWTSTAMP)
+ return gfar_hwtstamp_ioctl(dev, rq, cmd);
+
+ if (!priv->phydev)
+ return -ENODEV;
+
+ return phy_mii_ioctl(priv->phydev, rq, cmd);
+}
+
+static unsigned int reverse_bitmap(unsigned int bit_map, unsigned int max_qs)
+{
+ unsigned int new_bit_map = 0x0;
+ int mask = 0x1 << (max_qs - 1), i;
+ for (i = 0; i < max_qs; i++) {
+ if (bit_map & mask)
+ new_bit_map = new_bit_map + (1 << i);
+ mask = mask >> 0x1;
+ }
+ return new_bit_map;
+}
+
+static u32 cluster_entry_per_class(struct gfar_private *priv, u32 rqfar,
+ u32 class)
+{
+ u32 rqfpr = FPR_FILER_MASK;
+ u32 rqfcr = 0x0;
+
+ rqfar--;
+ rqfcr = RQFCR_CLE | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
+ priv->ftp_rqfpr[rqfar] = rqfpr;
+ priv->ftp_rqfcr[rqfar] = rqfcr;
+ gfar_write_filer(priv, rqfar, rqfcr, rqfpr);
+
+ rqfar--;
+ rqfcr = RQFCR_CMP_NOMATCH;
+ priv->ftp_rqfpr[rqfar] = rqfpr;
+ priv->ftp_rqfcr[rqfar] = rqfcr;
+ gfar_write_filer(priv, rqfar, rqfcr, rqfpr);
+
+ rqfar--;
+ rqfcr = RQFCR_CMP_EXACT | RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND;
+ rqfpr = class;
+ priv->ftp_rqfcr[rqfar] = rqfcr;
+ priv->ftp_rqfpr[rqfar] = rqfpr;
+ gfar_write_filer(priv, rqfar, rqfcr, rqfpr);
+
+ rqfar--;
+ rqfcr = RQFCR_CMP_EXACT | RQFCR_PID_MASK | RQFCR_AND;
+ rqfpr = class;
+ priv->ftp_rqfcr[rqfar] = rqfcr;
+ priv->ftp_rqfpr[rqfar] = rqfpr;
+ gfar_write_filer(priv, rqfar, rqfcr, rqfpr);
+
+ return rqfar;
+}
+
+static void gfar_init_filer_table(struct gfar_private *priv)
+{
+ int i = 0x0;
+ u32 rqfar = MAX_FILER_IDX;
+ u32 rqfcr = 0x0;
+ u32 rqfpr = FPR_FILER_MASK;
+
+ /* Default rule */
+ rqfcr = RQFCR_CMP_MATCH;
+ priv->ftp_rqfcr[rqfar] = rqfcr;
+ priv->ftp_rqfpr[rqfar] = rqfpr;
+ gfar_write_filer(priv, rqfar, rqfcr, rqfpr);
+
+ rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV6);
+ rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV6 | RQFPR_UDP);
+ rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV6 | RQFPR_TCP);
+ rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV4);
+ rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV4 | RQFPR_UDP);
+ rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV4 | RQFPR_TCP);
+
+ /* cur_filer_idx indicated the first non-masked rule */
+ priv->cur_filer_idx = rqfar;
+
+ /* Rest are masked rules */
+ rqfcr = RQFCR_CMP_NOMATCH;
+ for (i = 0; i < rqfar; i++) {
+ priv->ftp_rqfcr[i] = rqfcr;
+ priv->ftp_rqfpr[i] = rqfpr;
+ gfar_write_filer(priv, i, rqfcr, rqfpr);
+ }
+}
+
+static void gfar_detect_errata(struct gfar_private *priv)
+{
+ struct device *dev = &priv->ofdev->dev;
+ unsigned int pvr = mfspr(SPRN_PVR);
+ unsigned int svr = mfspr(SPRN_SVR);
+ unsigned int mod = (svr >> 16) & 0xfff6; /* w/o E suffix */
+ unsigned int rev = svr & 0xffff;
+
+ /* MPC8313 Rev 2.0 and higher; All MPC837x */
+ if ((pvr == 0x80850010 && mod == 0x80b0 && rev >= 0x0020) ||
+ (pvr == 0x80861010 && (mod & 0xfff9) == 0x80c0))
+ priv->errata |= GFAR_ERRATA_74;
+
+ /* MPC8313 and MPC837x all rev */
+ if ((pvr == 0x80850010 && mod == 0x80b0) ||
+ (pvr == 0x80861010 && (mod & 0xfff9) == 0x80c0))
+ priv->errata |= GFAR_ERRATA_76;
+
+ /* MPC8313 and MPC837x all rev */
+ if ((pvr == 0x80850010 && mod == 0x80b0) ||
+ (pvr == 0x80861010 && (mod & 0xfff9) == 0x80c0))
+ priv->errata |= GFAR_ERRATA_A002;
+
+ /* MPC8313 Rev < 2.0, MPC8548 rev 2.0 */
+ if ((pvr == 0x80850010 && mod == 0x80b0 && rev < 0x0020) ||
+ (pvr == 0x80210020 && mod == 0x8030 && rev == 0x0020))
+ priv->errata |= GFAR_ERRATA_12;
+
+ if (priv->errata)
+ dev_info(dev, "enabled errata workarounds, flags: 0x%x\n",
+ priv->errata);
+}
+
+/* Set up the ethernet device structure, private data,
+ * and anything else we need before we start */
+static int gfar_probe(struct platform_device *ofdev)
+{
+ u32 tempval;
+ struct net_device *dev = NULL;
+ struct gfar_private *priv = NULL;
+ struct gfar __iomem *regs = NULL;
+ int err = 0, i, grp_idx = 0;
+ int len_devname;
+ u32 rstat = 0, tstat = 0, rqueue = 0, tqueue = 0;
+ u32 isrg = 0;
+ u32 __iomem *baddr;
+
+ err = gfar_of_init(ofdev, &dev);
+
+ if (err)
+ return err;
+
+ priv = netdev_priv(dev);
+ priv->ndev = dev;
+ priv->ofdev = ofdev;
+ priv->node = ofdev->dev.of_node;
+ SET_NETDEV_DEV(dev, &ofdev->dev);
+
+ spin_lock_init(&priv->bflock);
+ INIT_WORK(&priv->reset_task, gfar_reset_task);
+
+ dev_set_drvdata(&ofdev->dev, priv);
+ regs = priv->gfargrp[0].regs;
+
+ gfar_detect_errata(priv);
+
+ /* Stop the DMA engine now, in case it was running before */
+ /* (The firmware could have used it, and left it running). */
+ gfar_halt(dev);
+
+ /* Reset MAC layer */
+ gfar_write(®s->maccfg1, MACCFG1_SOFT_RESET);
+
+ /* We need to delay at least 3 TX clocks */
+ udelay(2);
+
+ tempval = (MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
+ gfar_write(®s->maccfg1, tempval);
+
+ /* Initialize MACCFG2. */
+ tempval = MACCFG2_INIT_SETTINGS;
+ if (gfar_has_errata(priv, GFAR_ERRATA_74))
+ tempval |= MACCFG2_HUGEFRAME | MACCFG2_LENGTHCHECK;
+ gfar_write(®s->maccfg2, tempval);
+
+ /* Initialize ECNTRL */
+ gfar_write(®s->ecntrl, ECNTRL_INIT_SETTINGS);
+
+ /* Set the dev->base_addr to the gfar reg region */
+ dev->base_addr = (unsigned long) regs;
+
+ SET_NETDEV_DEV(dev, &ofdev->dev);
+
+ /* Fill in the dev structure */
+ dev->watchdog_timeo = TX_TIMEOUT;
+ dev->mtu = 1500;
+ dev->netdev_ops = &gfar_netdev_ops;
+ dev->ethtool_ops = &gfar_ethtool_ops;
+
+ /* Register for napi ...We are registering NAPI for each grp */
+ for (i = 0; i < priv->num_grps; i++)
+ netif_napi_add(dev, &priv->gfargrp[i].napi, gfar_poll, GFAR_DEV_WEIGHT);
+
+ if (priv->device_flags & FSL_GIANFAR_DEV_HAS_CSUM) {
+ dev->hw_features = NETIF_F_IP_CSUM | NETIF_F_SG |
+ NETIF_F_RXCSUM;
+ dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG |
+ NETIF_F_RXCSUM | NETIF_F_HIGHDMA;
+ }
+
+ if (priv->device_flags & FSL_GIANFAR_DEV_HAS_VLAN) {
+ dev->hw_features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
+ dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
+ }
+
+ if (priv->device_flags & FSL_GIANFAR_DEV_HAS_EXTENDED_HASH) {
+ priv->extended_hash = 1;
+ priv->hash_width = 9;
+
+ priv->hash_regs[0] = ®s->igaddr0;
+ priv->hash_regs[1] = ®s->igaddr1;
+ priv->hash_regs[2] = ®s->igaddr2;
+ priv->hash_regs[3] = ®s->igaddr3;
+ priv->hash_regs[4] = ®s->igaddr4;
+ priv->hash_regs[5] = ®s->igaddr5;
+ priv->hash_regs[6] = ®s->igaddr6;
+ priv->hash_regs[7] = ®s->igaddr7;
+ priv->hash_regs[8] = ®s->gaddr0;
+ priv->hash_regs[9] = ®s->gaddr1;
+ priv->hash_regs[10] = ®s->gaddr2;
+ priv->hash_regs[11] = ®s->gaddr3;
+ priv->hash_regs[12] = ®s->gaddr4;
+ priv->hash_regs[13] = ®s->gaddr5;
+ priv->hash_regs[14] = ®s->gaddr6;
+ priv->hash_regs[15] = ®s->gaddr7;
+
+ } else {
+ priv->extended_hash = 0;
+ priv->hash_width = 8;
+
+ priv->hash_regs[0] = ®s->gaddr0;
+ priv->hash_regs[1] = ®s->gaddr1;
+ priv->hash_regs[2] = ®s->gaddr2;
+ priv->hash_regs[3] = ®s->gaddr3;
+ priv->hash_regs[4] = ®s->gaddr4;
+ priv->hash_regs[5] = ®s->gaddr5;
+ priv->hash_regs[6] = ®s->gaddr6;
+ priv->hash_regs[7] = ®s->gaddr7;
+ }
+
+ if (priv->device_flags & FSL_GIANFAR_DEV_HAS_PADDING)
+ priv->padding = DEFAULT_PADDING;
+ else
+ priv->padding = 0;
+
+ if (dev->features & NETIF_F_IP_CSUM ||
+ priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)
+ dev->hard_header_len += GMAC_FCB_LEN;
+
+ /* Program the isrg regs only if number of grps > 1 */
+ if (priv->num_grps > 1) {
+ baddr = ®s->isrg0;
+ for (i = 0; i < priv->num_grps; i++) {
+ isrg |= (priv->gfargrp[i].rx_bit_map << ISRG_SHIFT_RX);
+ isrg |= (priv->gfargrp[i].tx_bit_map << ISRG_SHIFT_TX);
+ gfar_write(baddr, isrg);
+ baddr++;
+ isrg = 0x0;
+ }
+ }
+
+ /* Need to reverse the bit maps as bit_map's MSB is q0
+ * but, for_each_set_bit parses from right to left, which
+ * basically reverses the queue numbers */
+ for (i = 0; i< priv->num_grps; i++) {
+ priv->gfargrp[i].tx_bit_map = reverse_bitmap(
+ priv->gfargrp[i].tx_bit_map, MAX_TX_QS);
+ priv->gfargrp[i].rx_bit_map = reverse_bitmap(
+ priv->gfargrp[i].rx_bit_map, MAX_RX_QS);
+ }
+
+ /* Calculate RSTAT, TSTAT, RQUEUE and TQUEUE values,
+ * also assign queues to groups */
+ for (grp_idx = 0; grp_idx < priv->num_grps; grp_idx++) {
+ priv->gfargrp[grp_idx].num_rx_queues = 0x0;
+ for_each_set_bit(i, &priv->gfargrp[grp_idx].rx_bit_map,
+ priv->num_rx_queues) {
+ priv->gfargrp[grp_idx].num_rx_queues++;
+ priv->rx_queue[i]->grp = &priv->gfargrp[grp_idx];
+ rstat = rstat | (RSTAT_CLEAR_RHALT >> i);
+ rqueue = rqueue | ((RQUEUE_EN0 | RQUEUE_EX0) >> i);
+ }
+ priv->gfargrp[grp_idx].num_tx_queues = 0x0;
+ for_each_set_bit(i, &priv->gfargrp[grp_idx].tx_bit_map,
+ priv->num_tx_queues) {
+ priv->gfargrp[grp_idx].num_tx_queues++;
+ priv->tx_queue[i]->grp = &priv->gfargrp[grp_idx];
+ tstat = tstat | (TSTAT_CLEAR_THALT >> i);
+ tqueue = tqueue | (TQUEUE_EN0 >> i);
+ }
+ priv->gfargrp[grp_idx].rstat = rstat;
+ priv->gfargrp[grp_idx].tstat = tstat;
+ rstat = tstat =0;
+ }
+
+ gfar_write(®s->rqueue, rqueue);
+ gfar_write(®s->tqueue, tqueue);
+
+ priv->rx_buffer_size = DEFAULT_RX_BUFFER_SIZE;
+
+ /* Initializing some of the rx/tx queue level parameters */
+ for (i = 0; i < priv->num_tx_queues; i++) {
+ priv->tx_queue[i]->tx_ring_size = DEFAULT_TX_RING_SIZE;
+ priv->tx_queue[i]->num_txbdfree = DEFAULT_TX_RING_SIZE;
+ priv->tx_queue[i]->txcoalescing = DEFAULT_TX_COALESCE;
+ priv->tx_queue[i]->txic = DEFAULT_TXIC;
+ }
+
+ for (i = 0; i < priv->num_rx_queues; i++) {
+ priv->rx_queue[i]->rx_ring_size = DEFAULT_RX_RING_SIZE;
+ priv->rx_queue[i]->rxcoalescing = DEFAULT_RX_COALESCE;
+ priv->rx_queue[i]->rxic = DEFAULT_RXIC;
+ }
+
+ /* always enable rx filer*/
+ priv->rx_filer_enable = 1;
+ /* Enable most messages by default */
+ priv->msg_enable = (NETIF_MSG_IFUP << 1 ) - 1;
+
+ /* Carrier starts down, phylib will bring it up */
+ netif_carrier_off(dev);
+
+ err = register_netdev(dev);
+
+ if (err) {
+ pr_err("%s: Cannot register net device, aborting\n", dev->name);
+ goto register_fail;
+ }
+
+ device_init_wakeup(&dev->dev,
+ priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET);
+
+ /* fill out IRQ number and name fields */
+ len_devname = strlen(dev->name);
+ for (i = 0; i < priv->num_grps; i++) {
+ strncpy(&priv->gfargrp[i].int_name_tx[0], dev->name,
+ len_devname);
+ if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) {
+ strncpy(&priv->gfargrp[i].int_name_tx[len_devname],
+ "_g", sizeof("_g"));
+ priv->gfargrp[i].int_name_tx[
+ strlen(priv->gfargrp[i].int_name_tx)] = i+48;
+ strncpy(&priv->gfargrp[i].int_name_tx[strlen(
+ priv->gfargrp[i].int_name_tx)],
+ "_tx", sizeof("_tx") + 1);
+
+ strncpy(&priv->gfargrp[i].int_name_rx[0], dev->name,
+ len_devname);
+ strncpy(&priv->gfargrp[i].int_name_rx[len_devname],
+ "_g", sizeof("_g"));
+ priv->gfargrp[i].int_name_rx[
+ strlen(priv->gfargrp[i].int_name_rx)] = i+48;
+ strncpy(&priv->gfargrp[i].int_name_rx[strlen(
+ priv->gfargrp[i].int_name_rx)],
+ "_rx", sizeof("_rx") + 1);
+
+ strncpy(&priv->gfargrp[i].int_name_er[0], dev->name,
+ len_devname);
+ strncpy(&priv->gfargrp[i].int_name_er[len_devname],
+ "_g", sizeof("_g"));
+ priv->gfargrp[i].int_name_er[strlen(
+ priv->gfargrp[i].int_name_er)] = i+48;
+ strncpy(&priv->gfargrp[i].int_name_er[strlen(\
+ priv->gfargrp[i].int_name_er)],
+ "_er", sizeof("_er") + 1);
+ } else
+ priv->gfargrp[i].int_name_tx[len_devname] = '\0';
+ }
+
+ /* Initialize the filer table */
+ gfar_init_filer_table(priv);
+
+ /* Create all the sysfs files */
+ gfar_init_sysfs(dev);
+
+ /* Print out the device info */
+ netdev_info(dev, "mac: %pM\n", dev->dev_addr);
+
+ /* Even more device info helps when determining which kernel */
+ /* provided which set of benchmarks. */
+ netdev_info(dev, "Running with NAPI enabled\n");
+ for (i = 0; i < priv->num_rx_queues; i++)
+ netdev_info(dev, "RX BD ring size for Q[%d]: %d\n",
+ i, priv->rx_queue[i]->rx_ring_size);
+ for(i = 0; i < priv->num_tx_queues; i++)
+ netdev_info(dev, "TX BD ring size for Q[%d]: %d\n",
+ i, priv->tx_queue[i]->tx_ring_size);
+
+ return 0;
+
+register_fail:
+ unmap_group_regs(priv);
+ free_tx_pointers(priv);
+ free_rx_pointers(priv);
+ if (priv->phy_node)
+ of_node_put(priv->phy_node);
+ if (priv->tbi_node)
+ of_node_put(priv->tbi_node);
+ free_netdev(dev);
+ return err;
+}
+
+static int gfar_remove(struct platform_device *ofdev)
+{
+ struct gfar_private *priv = dev_get_drvdata(&ofdev->dev);
+
+ if (priv->phy_node)
+ of_node_put(priv->phy_node);
+ if (priv->tbi_node)
+ of_node_put(priv->tbi_node);
+
+ dev_set_drvdata(&ofdev->dev, NULL);
+
+ unregister_netdev(priv->ndev);
+ unmap_group_regs(priv);
+ free_netdev(priv->ndev);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+
+static int gfar_suspend(struct device *dev)
+{
+ struct gfar_private *priv = dev_get_drvdata(dev);
+ struct net_device *ndev = priv->ndev;
+ struct gfar __iomem *regs = priv->gfargrp[0].regs;
+ unsigned long flags;
+ u32 tempval;
+
+ int magic_packet = priv->wol_en &&
+ (priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET);
+
+ netif_device_detach(ndev);
+
+ if (netif_running(ndev)) {
+
+ local_irq_save(flags);
+ lock_tx_qs(priv);
+ lock_rx_qs(priv);
+
+ gfar_halt_nodisable(ndev);
+
+ /* Disable Tx, and Rx if wake-on-LAN is disabled. */
+ tempval = gfar_read(®s->maccfg1);
+
+ tempval &= ~MACCFG1_TX_EN;
+
+ if (!magic_packet)
+ tempval &= ~MACCFG1_RX_EN;
+
+ gfar_write(®s->maccfg1, tempval);
+
+ unlock_rx_qs(priv);
+ unlock_tx_qs(priv);
+ local_irq_restore(flags);
+
+ disable_napi(priv);
+
+ if (magic_packet) {
+ /* Enable interrupt on Magic Packet */
+ gfar_write(®s->imask, IMASK_MAG);
+
+ /* Enable Magic Packet mode */
+ tempval = gfar_read(®s->maccfg2);
+ tempval |= MACCFG2_MPEN;
+ gfar_write(®s->maccfg2, tempval);
+ } else {
+ phy_stop(priv->phydev);
+ }
+ }
+
+ return 0;
+}
+
+static int gfar_resume(struct device *dev)
+{
+ struct gfar_private *priv = dev_get_drvdata(dev);
+ struct net_device *ndev = priv->ndev;
+ struct gfar __iomem *regs = priv->gfargrp[0].regs;
+ unsigned long flags;
+ u32 tempval;
+ int magic_packet = priv->wol_en &&
+ (priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET);
+
+ if (!netif_running(ndev)) {
+ netif_device_attach(ndev);
+ return 0;
+ }
+
+ if (!magic_packet && priv->phydev)
+ phy_start(priv->phydev);
+
+ /* Disable Magic Packet mode, in case something
+ * else woke us up.
+ */
+ local_irq_save(flags);
+ lock_tx_qs(priv);
+ lock_rx_qs(priv);
+
+ tempval = gfar_read(®s->maccfg2);
+ tempval &= ~MACCFG2_MPEN;
+ gfar_write(®s->maccfg2, tempval);
+
+ gfar_start(ndev);
+
+ unlock_rx_qs(priv);
+ unlock_tx_qs(priv);
+ local_irq_restore(flags);
+
+ netif_device_attach(ndev);
+
+ enable_napi(priv);
+
+ return 0;
+}
+
+static int gfar_restore(struct device *dev)
+{
+ struct gfar_private *priv = dev_get_drvdata(dev);
+ struct net_device *ndev = priv->ndev;
+
+ if (!netif_running(ndev))
+ return 0;
+
+ gfar_init_bds(ndev);
+ init_registers(ndev);
+ gfar_set_mac_address(ndev);
+ gfar_init_mac(ndev);
+ gfar_start(ndev);
+
+ priv->oldlink = 0;
+ priv->oldspeed = 0;
+ priv->oldduplex = -1;
+
+ if (priv->phydev)
+ phy_start(priv->phydev);
+
+ netif_device_attach(ndev);
+ enable_napi(priv);
+
+ return 0;
+}
+
+static struct dev_pm_ops gfar_pm_ops = {
+ .suspend = gfar_suspend,
+ .resume = gfar_resume,
+ .freeze = gfar_suspend,
+ .thaw = gfar_resume,
+ .restore = gfar_restore,
+};
+
+#define GFAR_PM_OPS (&gfar_pm_ops)
+
+#else
+
+#define GFAR_PM_OPS NULL
+
+#endif
+
+/* Reads the controller's registers to determine what interface
+ * connects it to the PHY.
+ */
+static phy_interface_t gfar_get_interface(struct net_device *dev)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ struct gfar __iomem *regs = priv->gfargrp[0].regs;
+ u32 ecntrl;
+
+ ecntrl = gfar_read(®s->ecntrl);
+
+ if (ecntrl & ECNTRL_SGMII_MODE)
+ return PHY_INTERFACE_MODE_SGMII;
+
+ if (ecntrl & ECNTRL_TBI_MODE) {
+ if (ecntrl & ECNTRL_REDUCED_MODE)
+ return PHY_INTERFACE_MODE_RTBI;
+ else
+ return PHY_INTERFACE_MODE_TBI;
+ }
+
+ if (ecntrl & ECNTRL_REDUCED_MODE) {
+ if (ecntrl & ECNTRL_REDUCED_MII_MODE)
+ return PHY_INTERFACE_MODE_RMII;
+ else {
+ phy_interface_t interface = priv->interface;
+
+ /*
+ * This isn't autodetected right now, so it must
+ * be set by the device tree or platform code.
+ */
+ if (interface == PHY_INTERFACE_MODE_RGMII_ID)
+ return PHY_INTERFACE_MODE_RGMII_ID;
+
+ return PHY_INTERFACE_MODE_RGMII;
+ }
+ }
+
+ if (priv->device_flags & FSL_GIANFAR_DEV_HAS_GIGABIT)
+ return PHY_INTERFACE_MODE_GMII;
+
+ return PHY_INTERFACE_MODE_MII;
+}
+
+
+/* Initializes driver's PHY state, and attaches to the PHY.
+ * Returns 0 on success.
+ */
+static int init_phy(struct net_device *dev)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ uint gigabit_support =
+ priv->device_flags & FSL_GIANFAR_DEV_HAS_GIGABIT ?
+ SUPPORTED_1000baseT_Full : 0;
+ phy_interface_t interface;
+
+ priv->oldlink = 0;
+ priv->oldspeed = 0;
+ priv->oldduplex = -1;
+
+ interface = gfar_get_interface(dev);
+
+ priv->phydev = of_phy_connect(dev, priv->phy_node, &adjust_link, 0,
+ interface);
+ if (!priv->phydev)
+ priv->phydev = of_phy_connect_fixed_link(dev, &adjust_link,
+ interface);
+ if (!priv->phydev) {
+ dev_err(&dev->dev, "could not attach to PHY\n");
+ return -ENODEV;
+ }
+
+ if (interface == PHY_INTERFACE_MODE_SGMII)
+ gfar_configure_serdes(dev);
+
+ /* Remove any features not supported by the controller */
+ priv->phydev->supported &= (GFAR_SUPPORTED | gigabit_support);
+ priv->phydev->advertising = priv->phydev->supported;
+
+ return 0;
+}
+
+/*
+ * Initialize TBI PHY interface for communicating with the
+ * SERDES lynx PHY on the chip. We communicate with this PHY
+ * through the MDIO bus on each controller, treating it as a
+ * "normal" PHY at the address found in the TBIPA register. We assume
+ * that the TBIPA register is valid. Either the MDIO bus code will set
+ * it to a value that doesn't conflict with other PHYs on the bus, or the
+ * value doesn't matter, as there are no other PHYs on the bus.
+ */
+static void gfar_configure_serdes(struct net_device *dev)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ struct phy_device *tbiphy;
+
+ if (!priv->tbi_node) {
+ dev_warn(&dev->dev, "error: SGMII mode requires that the "
+ "device tree specify a tbi-handle\n");
+ return;
+ }
+
+ tbiphy = of_phy_find_device(priv->tbi_node);
+ if (!tbiphy) {
+ dev_err(&dev->dev, "error: Could not get TBI device\n");
+ return;
+ }
+
+ /*
+ * If the link is already up, we must already be ok, and don't need to
+ * configure and reset the TBI<->SerDes link. Maybe U-Boot configured
+ * everything for us? Resetting it takes the link down and requires
+ * several seconds for it to come back.
+ */
+ if (phy_read(tbiphy, MII_BMSR) & BMSR_LSTATUS)
+ return;
+
+ /* Single clk mode, mii mode off(for serdes communication) */
+ phy_write(tbiphy, MII_TBICON, TBICON_CLK_SELECT);
+
+ phy_write(tbiphy, MII_ADVERTISE,
+ ADVERTISE_1000XFULL | ADVERTISE_1000XPAUSE |
+ ADVERTISE_1000XPSE_ASYM);
+
+ phy_write(tbiphy, MII_BMCR, BMCR_ANENABLE |
+ BMCR_ANRESTART | BMCR_FULLDPLX | BMCR_SPEED1000);
+}
+
+static void init_registers(struct net_device *dev)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ struct gfar __iomem *regs = NULL;
+ int i = 0;
+
+ for (i = 0; i < priv->num_grps; i++) {
+ regs = priv->gfargrp[i].regs;
+ /* Clear IEVENT */
+ gfar_write(®s->ievent, IEVENT_INIT_CLEAR);
+
+ /* Initialize IMASK */
+ gfar_write(®s->imask, IMASK_INIT_CLEAR);
+ }
+
+ regs = priv->gfargrp[0].regs;
+ /* Init hash registers to zero */
+ gfar_write(®s->igaddr0, 0);
+ gfar_write(®s->igaddr1, 0);
+ gfar_write(®s->igaddr2, 0);
+ gfar_write(®s->igaddr3, 0);
+ gfar_write(®s->igaddr4, 0);
+ gfar_write(®s->igaddr5, 0);
+ gfar_write(®s->igaddr6, 0);
+ gfar_write(®s->igaddr7, 0);
+
+ gfar_write(®s->gaddr0, 0);
+ gfar_write(®s->gaddr1, 0);
+ gfar_write(®s->gaddr2, 0);
+ gfar_write(®s->gaddr3, 0);
+ gfar_write(®s->gaddr4, 0);
+ gfar_write(®s->gaddr5, 0);
+ gfar_write(®s->gaddr6, 0);
+ gfar_write(®s->gaddr7, 0);
+
+ /* Zero out the rmon mib registers if it has them */
+ if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
+ memset_io(&(regs->rmon), 0, sizeof (struct rmon_mib));
+
+ /* Mask off the CAM interrupts */
+ gfar_write(®s->rmon.cam1, 0xffffffff);
+ gfar_write(®s->rmon.cam2, 0xffffffff);
+ }
+
+ /* Initialize the max receive buffer length */
+ gfar_write(®s->mrblr, priv->rx_buffer_size);
+
+ /* Initialize the Minimum Frame Length Register */
+ gfar_write(®s->minflr, MINFLR_INIT_SETTINGS);
+}
+
+static int __gfar_is_rx_idle(struct gfar_private *priv)
+{
+ u32 res;
+
+ /*
+ * Normaly TSEC should not hang on GRS commands, so we should
+ * actually wait for IEVENT_GRSC flag.
+ */
+ if (likely(!gfar_has_errata(priv, GFAR_ERRATA_A002)))
+ return 0;
+
+ /*
+ * Read the eTSEC register at offset 0xD1C. If bits 7-14 are
+ * the same as bits 23-30, the eTSEC Rx is assumed to be idle
+ * and the Rx can be safely reset.
+ */
+ res = gfar_read((void __iomem *)priv->gfargrp[0].regs + 0xd1c);
+ res &= 0x7f807f80;
+ if ((res & 0xffff) == (res >> 16))
+ return 1;
+
+ return 0;
+}
+
+/* Halt the receive and transmit queues */
+static void gfar_halt_nodisable(struct net_device *dev)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ struct gfar __iomem *regs = NULL;
+ u32 tempval;
+ int i = 0;
+
+ for (i = 0; i < priv->num_grps; i++) {
+ regs = priv->gfargrp[i].regs;
+ /* Mask all interrupts */
+ gfar_write(®s->imask, IMASK_INIT_CLEAR);
+
+ /* Clear all interrupts */
+ gfar_write(®s->ievent, IEVENT_INIT_CLEAR);
+ }
+
+ regs = priv->gfargrp[0].regs;
+ /* Stop the DMA, and wait for it to stop */
+ tempval = gfar_read(®s->dmactrl);
+ if ((tempval & (DMACTRL_GRS | DMACTRL_GTS))
+ != (DMACTRL_GRS | DMACTRL_GTS)) {
+ int ret;
+
+ tempval |= (DMACTRL_GRS | DMACTRL_GTS);
+ gfar_write(®s->dmactrl, tempval);
+
+ do {
+ ret = spin_event_timeout(((gfar_read(®s->ievent) &
+ (IEVENT_GRSC | IEVENT_GTSC)) ==
+ (IEVENT_GRSC | IEVENT_GTSC)), 1000000, 0);
+ if (!ret && !(gfar_read(®s->ievent) & IEVENT_GRSC))
+ ret = __gfar_is_rx_idle(priv);
+ } while (!ret);
+ }
+}
+
+/* Halt the receive and transmit queues */
+void gfar_halt(struct net_device *dev)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ struct gfar __iomem *regs = priv->gfargrp[0].regs;
+ u32 tempval;
+
+ gfar_halt_nodisable(dev);
+
+ /* Disable Rx and Tx */
+ tempval = gfar_read(®s->maccfg1);
+ tempval &= ~(MACCFG1_RX_EN | MACCFG1_TX_EN);
+ gfar_write(®s->maccfg1, tempval);
+}
+
+static void free_grp_irqs(struct gfar_priv_grp *grp)
+{
+ free_irq(grp->interruptError, grp);
+ free_irq(grp->interruptTransmit, grp);
+ free_irq(grp->interruptReceive, grp);
+}
+
+void stop_gfar(struct net_device *dev)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ unsigned long flags;
+ int i;
+
+ phy_stop(priv->phydev);
+
+
+ /* Lock it down */
+ local_irq_save(flags);
+ lock_tx_qs(priv);
+ lock_rx_qs(priv);
+
+ gfar_halt(dev);
+
+ unlock_rx_qs(priv);
+ unlock_tx_qs(priv);
+ local_irq_restore(flags);
+
+ /* Free the IRQs */
+ if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) {
+ for (i = 0; i < priv->num_grps; i++)
+ free_grp_irqs(&priv->gfargrp[i]);
+ } else {
+ for (i = 0; i < priv->num_grps; i++)
+ free_irq(priv->gfargrp[i].interruptTransmit,
+ &priv->gfargrp[i]);
+ }
+
+ free_skb_resources(priv);
+}
+
+static void free_skb_tx_queue(struct gfar_priv_tx_q *tx_queue)
+{
+ struct txbd8 *txbdp;
+ struct gfar_private *priv = netdev_priv(tx_queue->dev);
+ int i, j;
+
+ txbdp = tx_queue->tx_bd_base;
+
+ for (i = 0; i < tx_queue->tx_ring_size; i++) {
+ if (!tx_queue->tx_skbuff[i])
+ continue;
+
+ dma_unmap_single(&priv->ofdev->dev, txbdp->bufPtr,
+ txbdp->length, DMA_TO_DEVICE);
+ txbdp->lstatus = 0;
+ for (j = 0; j < skb_shinfo(tx_queue->tx_skbuff[i])->nr_frags;
+ j++) {
+ txbdp++;
+ dma_unmap_page(&priv->ofdev->dev, txbdp->bufPtr,
+ txbdp->length, DMA_TO_DEVICE);
+ }
+ txbdp++;
+ dev_kfree_skb_any(tx_queue->tx_skbuff[i]);
+ tx_queue->tx_skbuff[i] = NULL;
+ }
+ kfree(tx_queue->tx_skbuff);
+}
+
+static void free_skb_rx_queue(struct gfar_priv_rx_q *rx_queue)
+{
+ struct rxbd8 *rxbdp;
+ struct gfar_private *priv = netdev_priv(rx_queue->dev);
+ int i;
+
+ rxbdp = rx_queue->rx_bd_base;
+
+ for (i = 0; i < rx_queue->rx_ring_size; i++) {
+ if (rx_queue->rx_skbuff[i]) {
+ dma_unmap_single(&priv->ofdev->dev,
+ rxbdp->bufPtr, priv->rx_buffer_size,
+ DMA_FROM_DEVICE);
+ dev_kfree_skb_any(rx_queue->rx_skbuff[i]);
+ rx_queue->rx_skbuff[i] = NULL;
+ }
+ rxbdp->lstatus = 0;
+ rxbdp->bufPtr = 0;
+ rxbdp++;
+ }
+ kfree(rx_queue->rx_skbuff);
+}
+
+/* If there are any tx skbs or rx skbs still around, free them.
+ * Then free tx_skbuff and rx_skbuff */
+static void free_skb_resources(struct gfar_private *priv)
+{
+ struct gfar_priv_tx_q *tx_queue = NULL;
+ struct gfar_priv_rx_q *rx_queue = NULL;
+ int i;
+
+ /* Go through all the buffer descriptors and free their data buffers */
+ for (i = 0; i < priv->num_tx_queues; i++) {
+ tx_queue = priv->tx_queue[i];
+ if(tx_queue->tx_skbuff)
+ free_skb_tx_queue(tx_queue);
+ }
+
+ for (i = 0; i < priv->num_rx_queues; i++) {
+ rx_queue = priv->rx_queue[i];
+ if(rx_queue->rx_skbuff)
+ free_skb_rx_queue(rx_queue);
+ }
+
+ dma_free_coherent(&priv->ofdev->dev,
+ sizeof(struct txbd8) * priv->total_tx_ring_size +
+ sizeof(struct rxbd8) * priv->total_rx_ring_size,
+ priv->tx_queue[0]->tx_bd_base,
+ priv->tx_queue[0]->tx_bd_dma_base);
+ skb_queue_purge(&priv->rx_recycle);
+}
+
+void gfar_start(struct net_device *dev)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ struct gfar __iomem *regs = priv->gfargrp[0].regs;
+ u32 tempval;
+ int i = 0;
+
+ /* Enable Rx and Tx in MACCFG1 */
+ tempval = gfar_read(®s->maccfg1);
+ tempval |= (MACCFG1_RX_EN | MACCFG1_TX_EN);
+ gfar_write(®s->maccfg1, tempval);
+
+ /* Initialize DMACTRL to have WWR and WOP */
+ tempval = gfar_read(®s->dmactrl);
+ tempval |= DMACTRL_INIT_SETTINGS;
+ gfar_write(®s->dmactrl, tempval);
+
+ /* Make sure we aren't stopped */
+ tempval = gfar_read(®s->dmactrl);
+ tempval &= ~(DMACTRL_GRS | DMACTRL_GTS);
+ gfar_write(®s->dmactrl, tempval);
+
+ for (i = 0; i < priv->num_grps; i++) {
+ regs = priv->gfargrp[i].regs;
+ /* Clear THLT/RHLT, so that the DMA starts polling now */
+ gfar_write(®s->tstat, priv->gfargrp[i].tstat);
+ gfar_write(®s->rstat, priv->gfargrp[i].rstat);
+ /* Unmask the interrupts we look for */
+ gfar_write(®s->imask, IMASK_DEFAULT);
+ }
+
+ dev->trans_start = jiffies; /* prevent tx timeout */
+}
+
+void gfar_configure_coalescing(struct gfar_private *priv,
+ unsigned long tx_mask, unsigned long rx_mask)
+{
+ struct gfar __iomem *regs = priv->gfargrp[0].regs;
+ u32 __iomem *baddr;
+ int i = 0;
+
+ /* Backward compatible case ---- even if we enable
+ * multiple queues, there's only single reg to program
+ */
+ gfar_write(®s->txic, 0);
+ if(likely(priv->tx_queue[0]->txcoalescing))
+ gfar_write(®s->txic, priv->tx_queue[0]->txic);
+
+ gfar_write(®s->rxic, 0);
+ if(unlikely(priv->rx_queue[0]->rxcoalescing))
+ gfar_write(®s->rxic, priv->rx_queue[0]->rxic);
+
+ if (priv->mode == MQ_MG_MODE) {
+ baddr = ®s->txic0;
+ for_each_set_bit(i, &tx_mask, priv->num_tx_queues) {
+ if (likely(priv->tx_queue[i]->txcoalescing)) {
+ gfar_write(baddr + i, 0);
+ gfar_write(baddr + i, priv->tx_queue[i]->txic);
+ }
+ }
+
+ baddr = ®s->rxic0;
+ for_each_set_bit(i, &rx_mask, priv->num_rx_queues) {
+ if (likely(priv->rx_queue[i]->rxcoalescing)) {
+ gfar_write(baddr + i, 0);
+ gfar_write(baddr + i, priv->rx_queue[i]->rxic);
+ }
+ }
+ }
+}
+
+static int register_grp_irqs(struct gfar_priv_grp *grp)
+{
+ struct gfar_private *priv = grp->priv;
+ struct net_device *dev = priv->ndev;
+ int err;
+
+ /* If the device has multiple interrupts, register for
+ * them. Otherwise, only register for the one */
+ if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) {
+ /* Install our interrupt handlers for Error,
+ * Transmit, and Receive */
+ if ((err = request_irq(grp->interruptError, gfar_error, 0,
+ grp->int_name_er,grp)) < 0) {
+ netif_err(priv, intr, dev, "Can't get IRQ %d\n",
+ grp->interruptError);
+
+ goto err_irq_fail;
+ }
+
+ if ((err = request_irq(grp->interruptTransmit, gfar_transmit,
+ 0, grp->int_name_tx, grp)) < 0) {
+ netif_err(priv, intr, dev, "Can't get IRQ %d\n",
+ grp->interruptTransmit);
+ goto tx_irq_fail;
+ }
+
+ if ((err = request_irq(grp->interruptReceive, gfar_receive, 0,
+ grp->int_name_rx, grp)) < 0) {
+ netif_err(priv, intr, dev, "Can't get IRQ %d\n",
+ grp->interruptReceive);
+ goto rx_irq_fail;
+ }
+ } else {
+ if ((err = request_irq(grp->interruptTransmit, gfar_interrupt, 0,
+ grp->int_name_tx, grp)) < 0) {
+ netif_err(priv, intr, dev, "Can't get IRQ %d\n",
+ grp->interruptTransmit);
+ goto err_irq_fail;
+ }
+ }
+
+ return 0;
+
+rx_irq_fail:
+ free_irq(grp->interruptTransmit, grp);
+tx_irq_fail:
+ free_irq(grp->interruptError, grp);
+err_irq_fail:
+ return err;
+
+}
+
+/* Bring the controller up and running */
+int startup_gfar(struct net_device *ndev)
+{
+ struct gfar_private *priv = netdev_priv(ndev);
+ struct gfar __iomem *regs = NULL;
+ int err, i, j;
+
+ for (i = 0; i < priv->num_grps; i++) {
+ regs= priv->gfargrp[i].regs;
+ gfar_write(®s->imask, IMASK_INIT_CLEAR);
+ }
+
+ regs= priv->gfargrp[0].regs;
+ err = gfar_alloc_skb_resources(ndev);
+ if (err)
+ return err;
+
+ gfar_init_mac(ndev);
+
+ for (i = 0; i < priv->num_grps; i++) {
+ err = register_grp_irqs(&priv->gfargrp[i]);
+ if (err) {
+ for (j = 0; j < i; j++)
+ free_grp_irqs(&priv->gfargrp[j]);
+ goto irq_fail;
+ }
+ }
+
+ /* Start the controller */
+ gfar_start(ndev);
+
+ phy_start(priv->phydev);
+
+ gfar_configure_coalescing(priv, 0xFF, 0xFF);
+
+ return 0;
+
+irq_fail:
+ free_skb_resources(priv);
+ return err;
+}
+
+/* Called when something needs to use the ethernet device */
+/* Returns 0 for success. */
+static int gfar_enet_open(struct net_device *dev)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ int err;
+
+ enable_napi(priv);
+
+ skb_queue_head_init(&priv->rx_recycle);
+
+ /* Initialize a bunch of registers */
+ init_registers(dev);
+
+ gfar_set_mac_address(dev);
+
+ err = init_phy(dev);
+
+ if (err) {
+ disable_napi(priv);
+ return err;
+ }
+
+ err = startup_gfar(dev);
+ if (err) {
+ disable_napi(priv);
+ return err;
+ }
+
+ netif_tx_start_all_queues(dev);
+
+ device_set_wakeup_enable(&dev->dev, priv->wol_en);
+
+ return err;
+}
+
+static inline struct txfcb *gfar_add_fcb(struct sk_buff *skb)
+{
+ struct txfcb *fcb = (struct txfcb *)skb_push(skb, GMAC_FCB_LEN);
+
+ memset(fcb, 0, GMAC_FCB_LEN);
+
+ return fcb;
+}
+
+static inline void gfar_tx_checksum(struct sk_buff *skb, struct txfcb *fcb)
+{
+ u8 flags = 0;
+
+ /* If we're here, it's a IP packet with a TCP or UDP
+ * payload. We set it to checksum, using a pseudo-header
+ * we provide
+ */
+ flags = TXFCB_DEFAULT;
+
+ /* Tell the controller what the protocol is */
+ /* And provide the already calculated phcs */
+ if (ip_hdr(skb)->protocol == IPPROTO_UDP) {
+ flags |= TXFCB_UDP;
+ fcb->phcs = udp_hdr(skb)->check;
+ } else
+ fcb->phcs = tcp_hdr(skb)->check;
+
+ /* l3os is the distance between the start of the
+ * frame (skb->data) and the start of the IP hdr.
+ * l4os is the distance between the start of the
+ * l3 hdr and the l4 hdr */
+ fcb->l3os = (u16)(skb_network_offset(skb) - GMAC_FCB_LEN);
+ fcb->l4os = skb_network_header_len(skb);
+
+ fcb->flags = flags;
+}
+
+void inline gfar_tx_vlan(struct sk_buff *skb, struct txfcb *fcb)
+{
+ fcb->flags |= TXFCB_VLN;
+ fcb->vlctl = vlan_tx_tag_get(skb);
+}
+
+static inline struct txbd8 *skip_txbd(struct txbd8 *bdp, int stride,
+ struct txbd8 *base, int ring_size)
+{
+ struct txbd8 *new_bd = bdp + stride;
+
+ return (new_bd >= (base + ring_size)) ? (new_bd - ring_size) : new_bd;
+}
+
+static inline struct txbd8 *next_txbd(struct txbd8 *bdp, struct txbd8 *base,
+ int ring_size)
+{
+ return skip_txbd(bdp, 1, base, ring_size);
+}
+
+/* This is called by the kernel when a frame is ready for transmission. */
+/* It is pointed to by the dev->hard_start_xmit function pointer */
+static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ struct gfar_priv_tx_q *tx_queue = NULL;
+ struct netdev_queue *txq;
+ struct gfar __iomem *regs = NULL;
+ struct txfcb *fcb = NULL;
+ struct txbd8 *txbdp, *txbdp_start, *base, *txbdp_tstamp = NULL;
+ u32 lstatus;
+ int i, rq = 0, do_tstamp = 0;
+ u32 bufaddr;
+ unsigned long flags;
+ unsigned int nr_frags, nr_txbds, length;
+
+ /*
+ * TOE=1 frames larger than 2500 bytes may see excess delays
+ * before start of transmission.
+ */
+ if (unlikely(gfar_has_errata(priv, GFAR_ERRATA_76) &&
+ skb->ip_summed == CHECKSUM_PARTIAL &&
+ skb->len > 2500)) {
+ int ret;
+
+ ret = skb_checksum_help(skb);
+ if (ret)
+ return ret;
+ }
+
+ rq = skb->queue_mapping;
+ tx_queue = priv->tx_queue[rq];
+ txq = netdev_get_tx_queue(dev, rq);
+ base = tx_queue->tx_bd_base;
+ regs = tx_queue->grp->regs;
+
+ /* check if time stamp should be generated */
+ if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
+ priv->hwts_tx_en))
+ do_tstamp = 1;
+
+ /* make space for additional header when fcb is needed */
+ if (((skb->ip_summed == CHECKSUM_PARTIAL) ||
+ vlan_tx_tag_present(skb) ||
+ unlikely(do_tstamp)) &&
+ (skb_headroom(skb) < GMAC_FCB_LEN)) {
+ struct sk_buff *skb_new;
+
+ skb_new = skb_realloc_headroom(skb, GMAC_FCB_LEN);
+ if (!skb_new) {
+ dev->stats.tx_errors++;
+ kfree_skb(skb);
+ return NETDEV_TX_OK;
+ }
+ kfree_skb(skb);
+ skb = skb_new;
+ }
+
+ /* total number of fragments in the SKB */
+ nr_frags = skb_shinfo(skb)->nr_frags;
+
+ /* calculate the required number of TxBDs for this skb */
+ if (unlikely(do_tstamp))
+ nr_txbds = nr_frags + 2;
+ else
+ nr_txbds = nr_frags + 1;
+
+ /* check if there is space to queue this packet */
+ if (nr_txbds > tx_queue->num_txbdfree) {
+ /* no space, stop the queue */
+ netif_tx_stop_queue(txq);
+ dev->stats.tx_fifo_errors++;
+ return NETDEV_TX_BUSY;
+ }
+
+ /* Update transmit stats */
+ tx_queue->stats.tx_bytes += skb->len;
+ tx_queue->stats.tx_packets++;
+
+ txbdp = txbdp_start = tx_queue->cur_tx;
+ lstatus = txbdp->lstatus;
+
+ /* Time stamp insertion requires one additional TxBD */
+ if (unlikely(do_tstamp))
+ txbdp_tstamp = txbdp = next_txbd(txbdp, base,
+ tx_queue->tx_ring_size);
+
+ if (nr_frags == 0) {
+ if (unlikely(do_tstamp))
+ txbdp_tstamp->lstatus |= BD_LFLAG(TXBD_LAST |
+ TXBD_INTERRUPT);
+ else
+ lstatus |= BD_LFLAG(TXBD_LAST | TXBD_INTERRUPT);
+ } else {
+ /* Place the fragment addresses and lengths into the TxBDs */
+ for (i = 0; i < nr_frags; i++) {
+ /* Point at the next BD, wrapping as needed */
+ txbdp = next_txbd(txbdp, base, tx_queue->tx_ring_size);
+
+ length = skb_shinfo(skb)->frags[i].size;
+
+ lstatus = txbdp->lstatus | length |
+ BD_LFLAG(TXBD_READY);
+
+ /* Handle the last BD specially */
+ if (i == nr_frags - 1)
+ lstatus |= BD_LFLAG(TXBD_LAST | TXBD_INTERRUPT);
+
+ bufaddr = dma_map_page(&priv->ofdev->dev,
+ skb_shinfo(skb)->frags[i].page,
+ skb_shinfo(skb)->frags[i].page_offset,
+ length,
+ DMA_TO_DEVICE);
+
+ /* set the TxBD length and buffer pointer */
+ txbdp->bufPtr = bufaddr;
+ txbdp->lstatus = lstatus;
+ }
+
+ lstatus = txbdp_start->lstatus;
+ }
+
+ /* Set up checksumming */
+ if (CHECKSUM_PARTIAL == skb->ip_summed) {
+ fcb = gfar_add_fcb(skb);
+ /* as specified by errata */
+ if (unlikely(gfar_has_errata(priv, GFAR_ERRATA_12)
+ && ((unsigned long)fcb % 0x20) > 0x18)) {
+ __skb_pull(skb, GMAC_FCB_LEN);
+ skb_checksum_help(skb);
+ } else {
+ lstatus |= BD_LFLAG(TXBD_TOE);
+ gfar_tx_checksum(skb, fcb);
+ }
+ }
+
+ if (vlan_tx_tag_present(skb)) {
+ if (unlikely(NULL == fcb)) {
+ fcb = gfar_add_fcb(skb);
+ lstatus |= BD_LFLAG(TXBD_TOE);
+ }
+
+ gfar_tx_vlan(skb, fcb);
+ }
+
+ /* Setup tx hardware time stamping if requested */
+ if (unlikely(do_tstamp)) {
+ skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
+ if (fcb == NULL)
+ fcb = gfar_add_fcb(skb);
+ fcb->ptp = 1;
+ lstatus |= BD_LFLAG(TXBD_TOE);
+ }
+
+ txbdp_start->bufPtr = dma_map_single(&priv->ofdev->dev, skb->data,
+ skb_headlen(skb), DMA_TO_DEVICE);
+
+ /*
+ * If time stamping is requested one additional TxBD must be set up. The
+ * first TxBD points to the FCB and must have a data length of
+ * GMAC_FCB_LEN. The second TxBD points to the actual frame data with
+ * the full frame length.
+ */
+ if (unlikely(do_tstamp)) {
+ txbdp_tstamp->bufPtr = txbdp_start->bufPtr + GMAC_FCB_LEN;
+ txbdp_tstamp->lstatus |= BD_LFLAG(TXBD_READY) |
+ (skb_headlen(skb) - GMAC_FCB_LEN);
+ lstatus |= BD_LFLAG(TXBD_CRC | TXBD_READY) | GMAC_FCB_LEN;
+ } else {
+ lstatus |= BD_LFLAG(TXBD_CRC | TXBD_READY) | skb_headlen(skb);
+ }
+
+ /*
+ * We can work in parallel with gfar_clean_tx_ring(), except
+ * when modifying num_txbdfree. Note that we didn't grab the lock
+ * when we were reading the num_txbdfree and checking for available
+ * space, that's because outside of this function it can only grow,
+ * and once we've got needed space, it cannot suddenly disappear.
+ *
+ * The lock also protects us from gfar_error(), which can modify
+ * regs->tstat and thus retrigger the transfers, which is why we
+ * also must grab the lock before setting ready bit for the first
+ * to be transmitted BD.
+ */
+ spin_lock_irqsave(&tx_queue->txlock, flags);
+
+ /*
+ * The powerpc-specific eieio() is used, as wmb() has too strong
+ * semantics (it requires synchronization between cacheable and
+ * uncacheable mappings, which eieio doesn't provide and which we
+ * don't need), thus requiring a more expensive sync instruction. At
+ * some point, the set of architecture-independent barrier functions
+ * should be expanded to include weaker barriers.
+ */
+ eieio();
+
+ txbdp_start->lstatus = lstatus;
+
+ eieio(); /* force lstatus write before tx_skbuff */
+
+ tx_queue->tx_skbuff[tx_queue->skb_curtx] = skb;
+
+ /* Update the current skb pointer to the next entry we will use
+ * (wrapping if necessary) */
+ tx_queue->skb_curtx = (tx_queue->skb_curtx + 1) &
+ TX_RING_MOD_MASK(tx_queue->tx_ring_size);
+
+ tx_queue->cur_tx = next_txbd(txbdp, base, tx_queue->tx_ring_size);
+
+ /* reduce TxBD free count */
+ tx_queue->num_txbdfree -= (nr_txbds);
+
+ /* If the next BD still needs to be cleaned up, then the bds
+ are full. We need to tell the kernel to stop sending us stuff. */
+ if (!tx_queue->num_txbdfree) {
+ netif_tx_stop_queue(txq);
+
+ dev->stats.tx_fifo_errors++;
+ }
+
+ /* Tell the DMA to go go go */
+ gfar_write(®s->tstat, TSTAT_CLEAR_THALT >> tx_queue->qindex);
+
+ /* Unlock priv */
+ spin_unlock_irqrestore(&tx_queue->txlock, flags);
+
+ return NETDEV_TX_OK;
+}
+
+/* Stops the kernel queue, and halts the controller */
+static int gfar_close(struct net_device *dev)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+
+ disable_napi(priv);
+
+ cancel_work_sync(&priv->reset_task);
+ stop_gfar(dev);
+
+ /* Disconnect from the PHY */
+ phy_disconnect(priv->phydev);
+ priv->phydev = NULL;
+
+ netif_tx_stop_all_queues(dev);
+
+ return 0;
+}
+
+/* Changes the mac address if the controller is not running. */
+static int gfar_set_mac_address(struct net_device *dev)
+{
+ gfar_set_mac_for_addr(dev, 0, dev->dev_addr);
+
+ return 0;
+}
+
+/* Check if rx parser should be activated */
+void gfar_check_rx_parser_mode(struct gfar_private *priv)
+{
+ struct gfar __iomem *regs;
+ u32 tempval;
+
+ regs = priv->gfargrp[0].regs;
+
+ tempval = gfar_read(®s->rctrl);
+ /* If parse is no longer required, then disable parser */
+ if (tempval & RCTRL_REQ_PARSER)
+ tempval |= RCTRL_PRSDEP_INIT;
+ else
+ tempval &= ~RCTRL_PRSDEP_INIT;
+ gfar_write(®s->rctrl, tempval);
+}
+
+/* Enables and disables VLAN insertion/extraction */
+void gfar_vlan_mode(struct net_device *dev, u32 features)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ struct gfar __iomem *regs = NULL;
+ unsigned long flags;
+ u32 tempval;
+
+ regs = priv->gfargrp[0].regs;
+ local_irq_save(flags);
+ lock_rx_qs(priv);
+
+ if (features & NETIF_F_HW_VLAN_TX) {
+ /* Enable VLAN tag insertion */
+ tempval = gfar_read(®s->tctrl);
+ tempval |= TCTRL_VLINS;
+ gfar_write(®s->tctrl, tempval);
+ } else {
+ /* Disable VLAN tag insertion */
+ tempval = gfar_read(®s->tctrl);
+ tempval &= ~TCTRL_VLINS;
+ gfar_write(®s->tctrl, tempval);
+ }
+
+ if (features & NETIF_F_HW_VLAN_RX) {
+ /* Enable VLAN tag extraction */
+ tempval = gfar_read(®s->rctrl);
+ tempval |= (RCTRL_VLEX | RCTRL_PRSDEP_INIT);
+ gfar_write(®s->rctrl, tempval);
+ } else {
+ /* Disable VLAN tag extraction */
+ tempval = gfar_read(®s->rctrl);
+ tempval &= ~RCTRL_VLEX;
+ gfar_write(®s->rctrl, tempval);
+
+ gfar_check_rx_parser_mode(priv);
+ }
+
+ gfar_change_mtu(dev, dev->mtu);
+
+ unlock_rx_qs(priv);
+ local_irq_restore(flags);
+}
+
+static int gfar_change_mtu(struct net_device *dev, int new_mtu)
+{
+ int tempsize, tempval;
+ struct gfar_private *priv = netdev_priv(dev);
+ struct gfar __iomem *regs = priv->gfargrp[0].regs;
+ int oldsize = priv->rx_buffer_size;
+ int frame_size = new_mtu + ETH_HLEN;
+
+ if (gfar_is_vlan_on(priv))
+ frame_size += VLAN_HLEN;
+
+ if ((frame_size < 64) || (frame_size > JUMBO_FRAME_SIZE)) {
+ netif_err(priv, drv, dev, "Invalid MTU setting\n");
+ return -EINVAL;
+ }
+
+ if (gfar_uses_fcb(priv))
+ frame_size += GMAC_FCB_LEN;
+
+ frame_size += priv->padding;
+
+ tempsize =
+ (frame_size & ~(INCREMENTAL_BUFFER_SIZE - 1)) +
+ INCREMENTAL_BUFFER_SIZE;
+
+ /* Only stop and start the controller if it isn't already
+ * stopped, and we changed something */
+ if ((oldsize != tempsize) && (dev->flags & IFF_UP))
+ stop_gfar(dev);
+
+ priv->rx_buffer_size = tempsize;
+
+ dev->mtu = new_mtu;
+
+ gfar_write(®s->mrblr, priv->rx_buffer_size);
+ gfar_write(®s->maxfrm, priv->rx_buffer_size);
+
+ /* If the mtu is larger than the max size for standard
+ * ethernet frames (ie, a jumbo frame), then set maccfg2
+ * to allow huge frames, and to check the length */
+ tempval = gfar_read(®s->maccfg2);
+
+ if (priv->rx_buffer_size > DEFAULT_RX_BUFFER_SIZE ||
+ gfar_has_errata(priv, GFAR_ERRATA_74))
+ tempval |= (MACCFG2_HUGEFRAME | MACCFG2_LENGTHCHECK);
+ else
+ tempval &= ~(MACCFG2_HUGEFRAME | MACCFG2_LENGTHCHECK);
+
+ gfar_write(®s->maccfg2, tempval);
+
+ if ((oldsize != tempsize) && (dev->flags & IFF_UP))
+ startup_gfar(dev);
+
+ return 0;
+}
+
+/* gfar_reset_task gets scheduled when a packet has not been
+ * transmitted after a set amount of time.
+ * For now, assume that clearing out all the structures, and
+ * starting over will fix the problem.
+ */
+static void gfar_reset_task(struct work_struct *work)
+{
+ struct gfar_private *priv = container_of(work, struct gfar_private,
+ reset_task);
+ struct net_device *dev = priv->ndev;
+
+ if (dev->flags & IFF_UP) {
+ netif_tx_stop_all_queues(dev);
+ stop_gfar(dev);
+ startup_gfar(dev);
+ netif_tx_start_all_queues(dev);
+ }
+
+ netif_tx_schedule_all(dev);
+}
+
+static void gfar_timeout(struct net_device *dev)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+
+ dev->stats.tx_errors++;
+ schedule_work(&priv->reset_task);
+}
+
+static void gfar_align_skb(struct sk_buff *skb)
+{
+ /* We need the data buffer to be aligned properly. We will reserve
+ * as many bytes as needed to align the data properly
+ */
+ skb_reserve(skb, RXBUF_ALIGNMENT -
+ (((unsigned long) skb->data) & (RXBUF_ALIGNMENT - 1)));
+}
+
+/* Interrupt Handler for Transmit complete */
+static int gfar_clean_tx_ring(struct gfar_priv_tx_q *tx_queue)
+{
+ struct net_device *dev = tx_queue->dev;
+ struct gfar_private *priv = netdev_priv(dev);
+ struct gfar_priv_rx_q *rx_queue = NULL;
+ struct txbd8 *bdp, *next = NULL;
+ struct txbd8 *lbdp = NULL;
+ struct txbd8 *base = tx_queue->tx_bd_base;
+ struct sk_buff *skb;
+ int skb_dirtytx;
+ int tx_ring_size = tx_queue->tx_ring_size;
+ int frags = 0, nr_txbds = 0;
+ int i;
+ int howmany = 0;
+ u32 lstatus;
+ size_t buflen;
+
+ rx_queue = priv->rx_queue[tx_queue->qindex];
+ bdp = tx_queue->dirty_tx;
+ skb_dirtytx = tx_queue->skb_dirtytx;
+
+ while ((skb = tx_queue->tx_skbuff[skb_dirtytx])) {
+ unsigned long flags;
+
+ frags = skb_shinfo(skb)->nr_frags;
+
+ /*
+ * When time stamping, one additional TxBD must be freed.
+ * Also, we need to dma_unmap_single() the TxPAL.
+ */
+ if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS))
+ nr_txbds = frags + 2;
+ else
+ nr_txbds = frags + 1;
+
+ lbdp = skip_txbd(bdp, nr_txbds - 1, base, tx_ring_size);
+
+ lstatus = lbdp->lstatus;
+
+ /* Only clean completed frames */
+ if ((lstatus & BD_LFLAG(TXBD_READY)) &&
+ (lstatus & BD_LENGTH_MASK))
+ break;
+
+ if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS)) {
+ next = next_txbd(bdp, base, tx_ring_size);
+ buflen = next->length + GMAC_FCB_LEN;
+ } else
+ buflen = bdp->length;
+
+ dma_unmap_single(&priv->ofdev->dev, bdp->bufPtr,
+ buflen, DMA_TO_DEVICE);
+
+ if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS)) {
+ struct skb_shared_hwtstamps shhwtstamps;
+ u64 *ns = (u64*) (((u32)skb->data + 0x10) & ~0x7);
+ memset(&shhwtstamps, 0, sizeof(shhwtstamps));
+ shhwtstamps.hwtstamp = ns_to_ktime(*ns);
+ skb_tstamp_tx(skb, &shhwtstamps);
+ bdp->lstatus &= BD_LFLAG(TXBD_WRAP);
+ bdp = next;
+ }
+
+ bdp->lstatus &= BD_LFLAG(TXBD_WRAP);
+ bdp = next_txbd(bdp, base, tx_ring_size);
+
+ for (i = 0; i < frags; i++) {
+ dma_unmap_page(&priv->ofdev->dev,
+ bdp->bufPtr,
+ bdp->length,
+ DMA_TO_DEVICE);
+ bdp->lstatus &= BD_LFLAG(TXBD_WRAP);
+ bdp = next_txbd(bdp, base, tx_ring_size);
+ }
+
+ /*
+ * If there's room in the queue (limit it to rx_buffer_size)
+ * we add this skb back into the pool, if it's the right size
+ */
+ if (skb_queue_len(&priv->rx_recycle) < rx_queue->rx_ring_size &&
+ skb_recycle_check(skb, priv->rx_buffer_size +
+ RXBUF_ALIGNMENT)) {
+ gfar_align_skb(skb);
+ skb_queue_head(&priv->rx_recycle, skb);
+ } else
+ dev_kfree_skb_any(skb);
+
+ tx_queue->tx_skbuff[skb_dirtytx] = NULL;
+
+ skb_dirtytx = (skb_dirtytx + 1) &
+ TX_RING_MOD_MASK(tx_ring_size);
+
+ howmany++;
+ spin_lock_irqsave(&tx_queue->txlock, flags);
+ tx_queue->num_txbdfree += nr_txbds;
+ spin_unlock_irqrestore(&tx_queue->txlock, flags);
+ }
+
+ /* If we freed a buffer, we can restart transmission, if necessary */
+ if (__netif_subqueue_stopped(dev, tx_queue->qindex) && tx_queue->num_txbdfree)
+ netif_wake_subqueue(dev, tx_queue->qindex);
+
+ /* Update dirty indicators */
+ tx_queue->skb_dirtytx = skb_dirtytx;
+ tx_queue->dirty_tx = bdp;
+
+ return howmany;
+}
+
+static void gfar_schedule_cleanup(struct gfar_priv_grp *gfargrp)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&gfargrp->grplock, flags);
+ if (napi_schedule_prep(&gfargrp->napi)) {
+ gfar_write(&gfargrp->regs->imask, IMASK_RTX_DISABLED);
+ __napi_schedule(&gfargrp->napi);
+ } else {
+ /*
+ * Clear IEVENT, so interrupts aren't called again
+ * because of the packets that have already arrived.
+ */
+ gfar_write(&gfargrp->regs->ievent, IEVENT_RTX_MASK);
+ }
+ spin_unlock_irqrestore(&gfargrp->grplock, flags);
+
+}
+
+/* Interrupt Handler for Transmit complete */
+static irqreturn_t gfar_transmit(int irq, void *grp_id)
+{
+ gfar_schedule_cleanup((struct gfar_priv_grp *)grp_id);
+ return IRQ_HANDLED;
+}
+
+static void gfar_new_rxbdp(struct gfar_priv_rx_q *rx_queue, struct rxbd8 *bdp,
+ struct sk_buff *skb)
+{
+ struct net_device *dev = rx_queue->dev;
+ struct gfar_private *priv = netdev_priv(dev);
+ dma_addr_t buf;
+
+ buf = dma_map_single(&priv->ofdev->dev, skb->data,
+ priv->rx_buffer_size, DMA_FROM_DEVICE);
+ gfar_init_rxbdp(rx_queue, bdp, buf);
+}
+
+static struct sk_buff * gfar_alloc_skb(struct net_device *dev)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ struct sk_buff *skb = NULL;
+
+ skb = netdev_alloc_skb(dev, priv->rx_buffer_size + RXBUF_ALIGNMENT);
+ if (!skb)
+ return NULL;
+
+ gfar_align_skb(skb);
+
+ return skb;
+}
+
+struct sk_buff * gfar_new_skb(struct net_device *dev)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ struct sk_buff *skb = NULL;
+
+ skb = skb_dequeue(&priv->rx_recycle);
+ if (!skb)
+ skb = gfar_alloc_skb(dev);
+
+ return skb;
+}
+
+static inline void count_errors(unsigned short status, struct net_device *dev)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ struct net_device_stats *stats = &dev->stats;
+ struct gfar_extra_stats *estats = &priv->extra_stats;
+
+ /* If the packet was truncated, none of the other errors
+ * matter */
+ if (status & RXBD_TRUNCATED) {
+ stats->rx_length_errors++;
+
+ estats->rx_trunc++;
+
+ return;
+ }
+ /* Count the errors, if there were any */
+ if (status & (RXBD_LARGE | RXBD_SHORT)) {
+ stats->rx_length_errors++;
+
+ if (status & RXBD_LARGE)
+ estats->rx_large++;
+ else
+ estats->rx_short++;
+ }
+ if (status & RXBD_NONOCTET) {
+ stats->rx_frame_errors++;
+ estats->rx_nonoctet++;
+ }
+ if (status & RXBD_CRCERR) {
+ estats->rx_crcerr++;
+ stats->rx_crc_errors++;
+ }
+ if (status & RXBD_OVERRUN) {
+ estats->rx_overrun++;
+ stats->rx_crc_errors++;
+ }
+}
+
+irqreturn_t gfar_receive(int irq, void *grp_id)
+{
+ gfar_schedule_cleanup((struct gfar_priv_grp *)grp_id);
+ return IRQ_HANDLED;
+}
+
+static inline void gfar_rx_checksum(struct sk_buff *skb, struct rxfcb *fcb)
+{
+ /* If valid headers were found, and valid sums
+ * were verified, then we tell the kernel that no
+ * checksumming is necessary. Otherwise, it is */
+ if ((fcb->flags & RXFCB_CSUM_MASK) == (RXFCB_CIP | RXFCB_CTU))
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ else
+ skb_checksum_none_assert(skb);
+}
+
+
+/* gfar_process_frame() -- handle one incoming packet if skb
+ * isn't NULL. */
+static int gfar_process_frame(struct net_device *dev, struct sk_buff *skb,
+ int amount_pull)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ struct rxfcb *fcb = NULL;
+
+ int ret;
+
+ /* fcb is at the beginning if exists */
+ fcb = (struct rxfcb *)skb->data;
+
+ /* Remove the FCB from the skb */
+ /* Remove the padded bytes, if there are any */
+ if (amount_pull) {
+ skb_record_rx_queue(skb, fcb->rq);
+ skb_pull(skb, amount_pull);
+ }
+
+ /* Get receive timestamp from the skb */
+ if (priv->hwts_rx_en) {
+ struct skb_shared_hwtstamps *shhwtstamps = skb_hwtstamps(skb);
+ u64 *ns = (u64 *) skb->data;
+ memset(shhwtstamps, 0, sizeof(*shhwtstamps));
+ shhwtstamps->hwtstamp = ns_to_ktime(*ns);
+ }
+
+ if (priv->padding)
+ skb_pull(skb, priv->padding);
+
+ if (dev->features & NETIF_F_RXCSUM)
+ gfar_rx_checksum(skb, fcb);
+
+ /* Tell the skb what kind of packet this is */
+ skb->protocol = eth_type_trans(skb, dev);
+
++ /*
++ * There's need to check for NETIF_F_HW_VLAN_RX here.
++ * Even if vlan rx accel is disabled, on some chips
++ * RXFCB_VLN is pseudo randomly set.
++ */
++ if (dev->features & NETIF_F_HW_VLAN_RX &&
++ fcb->flags & RXFCB_VLN)
+ __vlan_hwaccel_put_tag(skb, fcb->vlctl);
+
+ /* Send the packet up the stack */
+ ret = netif_receive_skb(skb);
+
+ if (NET_RX_DROP == ret)
+ priv->extra_stats.kernel_dropped++;
+
+ return 0;
+}
+
+/* gfar_clean_rx_ring() -- Processes each frame in the rx ring
+ * until the budget/quota has been reached. Returns the number
+ * of frames handled
+ */
+int gfar_clean_rx_ring(struct gfar_priv_rx_q *rx_queue, int rx_work_limit)
+{
+ struct net_device *dev = rx_queue->dev;
+ struct rxbd8 *bdp, *base;
+ struct sk_buff *skb;
+ int pkt_len;
+ int amount_pull;
+ int howmany = 0;
+ struct gfar_private *priv = netdev_priv(dev);
+
+ /* Get the first full descriptor */
+ bdp = rx_queue->cur_rx;
+ base = rx_queue->rx_bd_base;
+
+ amount_pull = (gfar_uses_fcb(priv) ? GMAC_FCB_LEN : 0);
+
+ while (!((bdp->status & RXBD_EMPTY) || (--rx_work_limit < 0))) {
+ struct sk_buff *newskb;
+ rmb();
+
+ /* Add another skb for the future */
+ newskb = gfar_new_skb(dev);
+
+ skb = rx_queue->rx_skbuff[rx_queue->skb_currx];
+
+ dma_unmap_single(&priv->ofdev->dev, bdp->bufPtr,
+ priv->rx_buffer_size, DMA_FROM_DEVICE);
+
+ if (unlikely(!(bdp->status & RXBD_ERR) &&
+ bdp->length > priv->rx_buffer_size))
+ bdp->status = RXBD_LARGE;
+
+ /* We drop the frame if we failed to allocate a new buffer */
+ if (unlikely(!newskb || !(bdp->status & RXBD_LAST) ||
+ bdp->status & RXBD_ERR)) {
+ count_errors(bdp->status, dev);
+
+ if (unlikely(!newskb))
+ newskb = skb;
+ else if (skb)
+ skb_queue_head(&priv->rx_recycle, skb);
+ } else {
+ /* Increment the number of packets */
+ rx_queue->stats.rx_packets++;
+ howmany++;
+
+ if (likely(skb)) {
+ pkt_len = bdp->length - ETH_FCS_LEN;
+ /* Remove the FCS from the packet length */
+ skb_put(skb, pkt_len);
+ rx_queue->stats.rx_bytes += pkt_len;
+ skb_record_rx_queue(skb, rx_queue->qindex);
+ gfar_process_frame(dev, skb, amount_pull);
+
+ } else {
+ netif_warn(priv, rx_err, dev, "Missing skb!\n");
+ rx_queue->stats.rx_dropped++;
+ priv->extra_stats.rx_skbmissing++;
+ }
+
+ }
+
+ rx_queue->rx_skbuff[rx_queue->skb_currx] = newskb;
+
+ /* Setup the new bdp */
+ gfar_new_rxbdp(rx_queue, bdp, newskb);
+
+ /* Update to the next pointer */
+ bdp = next_bd(bdp, base, rx_queue->rx_ring_size);
+
+ /* update to point at the next skb */
+ rx_queue->skb_currx =
+ (rx_queue->skb_currx + 1) &
+ RX_RING_MOD_MASK(rx_queue->rx_ring_size);
+ }
+
+ /* Update the current rxbd pointer to be the next one */
+ rx_queue->cur_rx = bdp;
+
+ return howmany;
+}
+
+static int gfar_poll(struct napi_struct *napi, int budget)
+{
+ struct gfar_priv_grp *gfargrp = container_of(napi,
+ struct gfar_priv_grp, napi);
+ struct gfar_private *priv = gfargrp->priv;
+ struct gfar __iomem *regs = gfargrp->regs;
+ struct gfar_priv_tx_q *tx_queue = NULL;
+ struct gfar_priv_rx_q *rx_queue = NULL;
+ int rx_cleaned = 0, budget_per_queue = 0, rx_cleaned_per_queue = 0;
+ int tx_cleaned = 0, i, left_over_budget = budget;
+ unsigned long serviced_queues = 0;
+ int num_queues = 0;
+
+ num_queues = gfargrp->num_rx_queues;
+ budget_per_queue = budget/num_queues;
+
+ /* Clear IEVENT, so interrupts aren't called again
+ * because of the packets that have already arrived */
+ gfar_write(®s->ievent, IEVENT_RTX_MASK);
+
+ while (num_queues && left_over_budget) {
+
+ budget_per_queue = left_over_budget/num_queues;
+ left_over_budget = 0;
+
+ for_each_set_bit(i, &gfargrp->rx_bit_map, priv->num_rx_queues) {
+ if (test_bit(i, &serviced_queues))
+ continue;
+ rx_queue = priv->rx_queue[i];
+ tx_queue = priv->tx_queue[rx_queue->qindex];
+
+ tx_cleaned += gfar_clean_tx_ring(tx_queue);
+ rx_cleaned_per_queue = gfar_clean_rx_ring(rx_queue,
+ budget_per_queue);
+ rx_cleaned += rx_cleaned_per_queue;
+ if(rx_cleaned_per_queue < budget_per_queue) {
+ left_over_budget = left_over_budget +
+ (budget_per_queue - rx_cleaned_per_queue);
+ set_bit(i, &serviced_queues);
+ num_queues--;
+ }
+ }
+ }
+
+ if (tx_cleaned)
+ return budget;
+
+ if (rx_cleaned < budget) {
+ napi_complete(napi);
+
+ /* Clear the halt bit in RSTAT */
+ gfar_write(®s->rstat, gfargrp->rstat);
+
+ gfar_write(®s->imask, IMASK_DEFAULT);
+
+ /* If we are coalescing interrupts, update the timer */
+ /* Otherwise, clear it */
+ gfar_configure_coalescing(priv,
+ gfargrp->rx_bit_map, gfargrp->tx_bit_map);
+ }
+
+ return rx_cleaned;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/*
+ * Polling 'interrupt' - used by things like netconsole to send skbs
+ * without having to re-enable interrupts. It's not called while
+ * the interrupt routine is executing.
+ */
+static void gfar_netpoll(struct net_device *dev)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ int i = 0;
+
+ /* If the device has multiple interrupts, run tx/rx */
+ if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) {
+ for (i = 0; i < priv->num_grps; i++) {
+ disable_irq(priv->gfargrp[i].interruptTransmit);
+ disable_irq(priv->gfargrp[i].interruptReceive);
+ disable_irq(priv->gfargrp[i].interruptError);
+ gfar_interrupt(priv->gfargrp[i].interruptTransmit,
+ &priv->gfargrp[i]);
+ enable_irq(priv->gfargrp[i].interruptError);
+ enable_irq(priv->gfargrp[i].interruptReceive);
+ enable_irq(priv->gfargrp[i].interruptTransmit);
+ }
+ } else {
+ for (i = 0; i < priv->num_grps; i++) {
+ disable_irq(priv->gfargrp[i].interruptTransmit);
+ gfar_interrupt(priv->gfargrp[i].interruptTransmit,
+ &priv->gfargrp[i]);
+ enable_irq(priv->gfargrp[i].interruptTransmit);
+ }
+ }
+}
+#endif
+
+/* The interrupt handler for devices with one interrupt */
+static irqreturn_t gfar_interrupt(int irq, void *grp_id)
+{
+ struct gfar_priv_grp *gfargrp = grp_id;
+
+ /* Save ievent for future reference */
+ u32 events = gfar_read(&gfargrp->regs->ievent);
+
+ /* Check for reception */
+ if (events & IEVENT_RX_MASK)
+ gfar_receive(irq, grp_id);
+
+ /* Check for transmit completion */
+ if (events & IEVENT_TX_MASK)
+ gfar_transmit(irq, grp_id);
+
+ /* Check for errors */
+ if (events & IEVENT_ERR_MASK)
+ gfar_error(irq, grp_id);
+
+ return IRQ_HANDLED;
+}
+
+/* Called every time the controller might need to be made
+ * aware of new link state. The PHY code conveys this
+ * information through variables in the phydev structure, and this
+ * function converts those variables into the appropriate
+ * register values, and can bring down the device if needed.
+ */
+static void adjust_link(struct net_device *dev)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ struct gfar __iomem *regs = priv->gfargrp[0].regs;
+ unsigned long flags;
+ struct phy_device *phydev = priv->phydev;
+ int new_state = 0;
+
+ local_irq_save(flags);
+ lock_tx_qs(priv);
+
+ if (phydev->link) {
+ u32 tempval = gfar_read(®s->maccfg2);
+ u32 ecntrl = gfar_read(®s->ecntrl);
+
+ /* Now we make sure that we can be in full duplex mode.
+ * If not, we operate in half-duplex mode. */
+ if (phydev->duplex != priv->oldduplex) {
+ new_state = 1;
+ if (!(phydev->duplex))
+ tempval &= ~(MACCFG2_FULL_DUPLEX);
+ else
+ tempval |= MACCFG2_FULL_DUPLEX;
+
+ priv->oldduplex = phydev->duplex;
+ }
+
+ if (phydev->speed != priv->oldspeed) {
+ new_state = 1;
+ switch (phydev->speed) {
+ case 1000:
+ tempval =
+ ((tempval & ~(MACCFG2_IF)) | MACCFG2_GMII);
+
+ ecntrl &= ~(ECNTRL_R100);
+ break;
+ case 100:
+ case 10:
+ tempval =
+ ((tempval & ~(MACCFG2_IF)) | MACCFG2_MII);
+
+ /* Reduced mode distinguishes
+ * between 10 and 100 */
+ if (phydev->speed == SPEED_100)
+ ecntrl |= ECNTRL_R100;
+ else
+ ecntrl &= ~(ECNTRL_R100);
+ break;
+ default:
+ netif_warn(priv, link, dev,
+ "Ack! Speed (%d) is not 10/100/1000!\n",
+ phydev->speed);
+ break;
+ }
+
+ priv->oldspeed = phydev->speed;
+ }
+
+ gfar_write(®s->maccfg2, tempval);
+ gfar_write(®s->ecntrl, ecntrl);
+
+ if (!priv->oldlink) {
+ new_state = 1;
+ priv->oldlink = 1;
+ }
+ } else if (priv->oldlink) {
+ new_state = 1;
+ priv->oldlink = 0;
+ priv->oldspeed = 0;
+ priv->oldduplex = -1;
+ }
+
+ if (new_state && netif_msg_link(priv))
+ phy_print_status(phydev);
+ unlock_tx_qs(priv);
+ local_irq_restore(flags);
+}
+
+/* Update the hash table based on the current list of multicast
+ * addresses we subscribe to. Also, change the promiscuity of
+ * the device based on the flags (this function is called
+ * whenever dev->flags is changed */
+static void gfar_set_multi(struct net_device *dev)
+{
+ struct netdev_hw_addr *ha;
+ struct gfar_private *priv = netdev_priv(dev);
+ struct gfar __iomem *regs = priv->gfargrp[0].regs;
+ u32 tempval;
+
+ if (dev->flags & IFF_PROMISC) {
+ /* Set RCTRL to PROM */
+ tempval = gfar_read(®s->rctrl);
+ tempval |= RCTRL_PROM;
+ gfar_write(®s->rctrl, tempval);
+ } else {
+ /* Set RCTRL to not PROM */
+ tempval = gfar_read(®s->rctrl);
+ tempval &= ~(RCTRL_PROM);
+ gfar_write(®s->rctrl, tempval);
+ }
+
+ if (dev->flags & IFF_ALLMULTI) {
+ /* Set the hash to rx all multicast frames */
+ gfar_write(®s->igaddr0, 0xffffffff);
+ gfar_write(®s->igaddr1, 0xffffffff);
+ gfar_write(®s->igaddr2, 0xffffffff);
+ gfar_write(®s->igaddr3, 0xffffffff);
+ gfar_write(®s->igaddr4, 0xffffffff);
+ gfar_write(®s->igaddr5, 0xffffffff);
+ gfar_write(®s->igaddr6, 0xffffffff);
+ gfar_write(®s->igaddr7, 0xffffffff);
+ gfar_write(®s->gaddr0, 0xffffffff);
+ gfar_write(®s->gaddr1, 0xffffffff);
+ gfar_write(®s->gaddr2, 0xffffffff);
+ gfar_write(®s->gaddr3, 0xffffffff);
+ gfar_write(®s->gaddr4, 0xffffffff);
+ gfar_write(®s->gaddr5, 0xffffffff);
+ gfar_write(®s->gaddr6, 0xffffffff);
+ gfar_write(®s->gaddr7, 0xffffffff);
+ } else {
+ int em_num;
+ int idx;
+
+ /* zero out the hash */
+ gfar_write(®s->igaddr0, 0x0);
+ gfar_write(®s->igaddr1, 0x0);
+ gfar_write(®s->igaddr2, 0x0);
+ gfar_write(®s->igaddr3, 0x0);
+ gfar_write(®s->igaddr4, 0x0);
+ gfar_write(®s->igaddr5, 0x0);
+ gfar_write(®s->igaddr6, 0x0);
+ gfar_write(®s->igaddr7, 0x0);
+ gfar_write(®s->gaddr0, 0x0);
+ gfar_write(®s->gaddr1, 0x0);
+ gfar_write(®s->gaddr2, 0x0);
+ gfar_write(®s->gaddr3, 0x0);
+ gfar_write(®s->gaddr4, 0x0);
+ gfar_write(®s->gaddr5, 0x0);
+ gfar_write(®s->gaddr6, 0x0);
+ gfar_write(®s->gaddr7, 0x0);
+
+ /* If we have extended hash tables, we need to
+ * clear the exact match registers to prepare for
+ * setting them */
+ if (priv->extended_hash) {
+ em_num = GFAR_EM_NUM + 1;
+ gfar_clear_exact_match(dev);
+ idx = 1;
+ } else {
+ idx = 0;
+ em_num = 0;
+ }
+
+ if (netdev_mc_empty(dev))
+ return;
+
+ /* Parse the list, and set the appropriate bits */
+ netdev_for_each_mc_addr(ha, dev) {
+ if (idx < em_num) {
+ gfar_set_mac_for_addr(dev, idx, ha->addr);
+ idx++;
+ } else
+ gfar_set_hash_for_addr(dev, ha->addr);
+ }
+ }
+}
+
+
+/* Clears each of the exact match registers to zero, so they
+ * don't interfere with normal reception */
+static void gfar_clear_exact_match(struct net_device *dev)
+{
+ int idx;
+ static const u8 zero_arr[MAC_ADDR_LEN] = {0, 0, 0, 0, 0, 0};
+
+ for(idx = 1;idx < GFAR_EM_NUM + 1;idx++)
+ gfar_set_mac_for_addr(dev, idx, zero_arr);
+}
+
+/* Set the appropriate hash bit for the given addr */
+/* The algorithm works like so:
+ * 1) Take the Destination Address (ie the multicast address), and
+ * do a CRC on it (little endian), and reverse the bits of the
+ * result.
+ * 2) Use the 8 most significant bits as a hash into a 256-entry
+ * table. The table is controlled through 8 32-bit registers:
+ * gaddr0-7. gaddr0's MSB is entry 0, and gaddr7's LSB is
+ * gaddr7. This means that the 3 most significant bits in the
+ * hash index which gaddr register to use, and the 5 other bits
+ * indicate which bit (assuming an IBM numbering scheme, which
+ * for PowerPC (tm) is usually the case) in the register holds
+ * the entry. */
+static void gfar_set_hash_for_addr(struct net_device *dev, u8 *addr)
+{
+ u32 tempval;
+ struct gfar_private *priv = netdev_priv(dev);
+ u32 result = ether_crc(MAC_ADDR_LEN, addr);
+ int width = priv->hash_width;
+ u8 whichbit = (result >> (32 - width)) & 0x1f;
+ u8 whichreg = result >> (32 - width + 5);
+ u32 value = (1 << (31-whichbit));
+
+ tempval = gfar_read(priv->hash_regs[whichreg]);
+ tempval |= value;
+ gfar_write(priv->hash_regs[whichreg], tempval);
+}
+
+
+/* There are multiple MAC Address register pairs on some controllers
+ * This function sets the numth pair to a given address
+ */
+static void gfar_set_mac_for_addr(struct net_device *dev, int num,
+ const u8 *addr)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ struct gfar __iomem *regs = priv->gfargrp[0].regs;
+ int idx;
+ char tmpbuf[MAC_ADDR_LEN];
+ u32 tempval;
+ u32 __iomem *macptr = ®s->macstnaddr1;
+
+ macptr += num*2;
+
+ /* Now copy it into the mac registers backwards, cuz */
+ /* little endian is silly */
+ for (idx = 0; idx < MAC_ADDR_LEN; idx++)
+ tmpbuf[MAC_ADDR_LEN - 1 - idx] = addr[idx];
+
+ gfar_write(macptr, *((u32 *) (tmpbuf)));
+
+ tempval = *((u32 *) (tmpbuf + 4));
+
+ gfar_write(macptr+1, tempval);
+}
+
+/* GFAR error interrupt handler */
+static irqreturn_t gfar_error(int irq, void *grp_id)
+{
+ struct gfar_priv_grp *gfargrp = grp_id;
+ struct gfar __iomem *regs = gfargrp->regs;
+ struct gfar_private *priv= gfargrp->priv;
+ struct net_device *dev = priv->ndev;
+
+ /* Save ievent for future reference */
+ u32 events = gfar_read(®s->ievent);
+
+ /* Clear IEVENT */
+ gfar_write(®s->ievent, events & IEVENT_ERR_MASK);
+
+ /* Magic Packet is not an error. */
+ if ((priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) &&
+ (events & IEVENT_MAG))
+ events &= ~IEVENT_MAG;
+
+ /* Hmm... */
+ if (netif_msg_rx_err(priv) || netif_msg_tx_err(priv))
+ netdev_dbg(dev, "error interrupt (ievent=0x%08x imask=0x%08x)\n",
+ events, gfar_read(®s->imask));
+
+ /* Update the error counters */
+ if (events & IEVENT_TXE) {
+ dev->stats.tx_errors++;
+
+ if (events & IEVENT_LC)
+ dev->stats.tx_window_errors++;
+ if (events & IEVENT_CRL)
+ dev->stats.tx_aborted_errors++;
+ if (events & IEVENT_XFUN) {
+ unsigned long flags;
+
+ netif_dbg(priv, tx_err, dev,
+ "TX FIFO underrun, packet dropped\n");
+ dev->stats.tx_dropped++;
+ priv->extra_stats.tx_underrun++;
+
+ local_irq_save(flags);
+ lock_tx_qs(priv);
+
+ /* Reactivate the Tx Queues */
+ gfar_write(®s->tstat, gfargrp->tstat);
+
+ unlock_tx_qs(priv);
+ local_irq_restore(flags);
+ }
+ netif_dbg(priv, tx_err, dev, "Transmit Error\n");
+ }
+ if (events & IEVENT_BSY) {
+ dev->stats.rx_errors++;
+ priv->extra_stats.rx_bsy++;
+
+ gfar_receive(irq, grp_id);
+
+ netif_dbg(priv, rx_err, dev, "busy error (rstat: %x)\n",
+ gfar_read(®s->rstat));
+ }
+ if (events & IEVENT_BABR) {
+ dev->stats.rx_errors++;
+ priv->extra_stats.rx_babr++;
+
+ netif_dbg(priv, rx_err, dev, "babbling RX error\n");
+ }
+ if (events & IEVENT_EBERR) {
+ priv->extra_stats.eberr++;
+ netif_dbg(priv, rx_err, dev, "bus error\n");
+ }
+ if (events & IEVENT_RXC)
+ netif_dbg(priv, rx_status, dev, "control frame\n");
+
+ if (events & IEVENT_BABT) {
+ priv->extra_stats.tx_babt++;
+ netif_dbg(priv, tx_err, dev, "babbling TX error\n");
+ }
+ return IRQ_HANDLED;
+}
+
+static struct of_device_id gfar_match[] =
+{
+ {
+ .type = "network",
+ .compatible = "gianfar",
+ },
+ {
+ .compatible = "fsl,etsec2",
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, gfar_match);
+
+/* Structure for a device driver */
+static struct platform_driver gfar_driver = {
+ .driver = {
+ .name = "fsl-gianfar",
+ .owner = THIS_MODULE,
+ .pm = GFAR_PM_OPS,
+ .of_match_table = gfar_match,
+ },
+ .probe = gfar_probe,
+ .remove = gfar_remove,
+};
+
+static int __init gfar_init(void)
+{
+ return platform_driver_register(&gfar_driver);
+}
+
+static void __exit gfar_exit(void)
+{
+ platform_driver_unregister(&gfar_driver);
+}
+
+module_init(gfar_init);
+module_exit(gfar_exit);
+
--- /dev/null
- #define DRV_VERSION "1.3.16" DRV_EXTRAVERSION
+/*******************************************************************************
+
+ Intel PRO/1000 Linux driver
+ Copyright(c) 1999 - 2011 Intel Corporation.
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms and conditions of the GNU General Public License,
+ version 2, as published by the Free Software Foundation.
+
+ This program is distributed in the hope it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ more details.
+
+ You should have received a copy of the GNU General Public License along with
+ this program; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+
+ The full GNU General Public License is included in this distribution in
+ the file called "COPYING".
+
+ Contact Information:
+ Linux NICS <linux.nics@intel.com>
+ e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
+ Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/vmalloc.h>
+#include <linux/pagemap.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/interrupt.h>
+#include <linux/tcp.h>
+#include <linux/ipv6.h>
+#include <linux/slab.h>
+#include <net/checksum.h>
+#include <net/ip6_checksum.h>
+#include <linux/mii.h>
+#include <linux/ethtool.h>
+#include <linux/if_vlan.h>
+#include <linux/cpu.h>
+#include <linux/smp.h>
+#include <linux/pm_qos_params.h>
+#include <linux/pm_runtime.h>
+#include <linux/aer.h>
+#include <linux/prefetch.h>
+
+#include "e1000.h"
+
+#define DRV_EXTRAVERSION "-k"
+
- writel(i, adapter->hw.hw_addr + rx_ring->tail);
++#define DRV_VERSION "1.4.4" DRV_EXTRAVERSION
+char e1000e_driver_name[] = "e1000e";
+const char e1000e_driver_version[] = DRV_VERSION;
+
+static void e1000e_disable_aspm(struct pci_dev *pdev, u16 state);
+
+static const struct e1000_info *e1000_info_tbl[] = {
+ [board_82571] = &e1000_82571_info,
+ [board_82572] = &e1000_82572_info,
+ [board_82573] = &e1000_82573_info,
+ [board_82574] = &e1000_82574_info,
+ [board_82583] = &e1000_82583_info,
+ [board_80003es2lan] = &e1000_es2_info,
+ [board_ich8lan] = &e1000_ich8_info,
+ [board_ich9lan] = &e1000_ich9_info,
+ [board_ich10lan] = &e1000_ich10_info,
+ [board_pchlan] = &e1000_pch_info,
+ [board_pch2lan] = &e1000_pch2_info,
+};
+
+struct e1000_reg_info {
+ u32 ofs;
+ char *name;
+};
+
+#define E1000_RDFH 0x02410 /* Rx Data FIFO Head - RW */
+#define E1000_RDFT 0x02418 /* Rx Data FIFO Tail - RW */
+#define E1000_RDFHS 0x02420 /* Rx Data FIFO Head Saved - RW */
+#define E1000_RDFTS 0x02428 /* Rx Data FIFO Tail Saved - RW */
+#define E1000_RDFPC 0x02430 /* Rx Data FIFO Packet Count - RW */
+
+#define E1000_TDFH 0x03410 /* Tx Data FIFO Head - RW */
+#define E1000_TDFT 0x03418 /* Tx Data FIFO Tail - RW */
+#define E1000_TDFHS 0x03420 /* Tx Data FIFO Head Saved - RW */
+#define E1000_TDFTS 0x03428 /* Tx Data FIFO Tail Saved - RW */
+#define E1000_TDFPC 0x03430 /* Tx Data FIFO Packet Count - RW */
+
+static const struct e1000_reg_info e1000_reg_info_tbl[] = {
+
+ /* General Registers */
+ {E1000_CTRL, "CTRL"},
+ {E1000_STATUS, "STATUS"},
+ {E1000_CTRL_EXT, "CTRL_EXT"},
+
+ /* Interrupt Registers */
+ {E1000_ICR, "ICR"},
+
+ /* Rx Registers */
+ {E1000_RCTL, "RCTL"},
+ {E1000_RDLEN, "RDLEN"},
+ {E1000_RDH, "RDH"},
+ {E1000_RDT, "RDT"},
+ {E1000_RDTR, "RDTR"},
+ {E1000_RXDCTL(0), "RXDCTL"},
+ {E1000_ERT, "ERT"},
+ {E1000_RDBAL, "RDBAL"},
+ {E1000_RDBAH, "RDBAH"},
+ {E1000_RDFH, "RDFH"},
+ {E1000_RDFT, "RDFT"},
+ {E1000_RDFHS, "RDFHS"},
+ {E1000_RDFTS, "RDFTS"},
+ {E1000_RDFPC, "RDFPC"},
+
+ /* Tx Registers */
+ {E1000_TCTL, "TCTL"},
+ {E1000_TDBAL, "TDBAL"},
+ {E1000_TDBAH, "TDBAH"},
+ {E1000_TDLEN, "TDLEN"},
+ {E1000_TDH, "TDH"},
+ {E1000_TDT, "TDT"},
+ {E1000_TIDV, "TIDV"},
+ {E1000_TXDCTL(0), "TXDCTL"},
+ {E1000_TADV, "TADV"},
+ {E1000_TARC(0), "TARC"},
+ {E1000_TDFH, "TDFH"},
+ {E1000_TDFT, "TDFT"},
+ {E1000_TDFHS, "TDFHS"},
+ {E1000_TDFTS, "TDFTS"},
+ {E1000_TDFPC, "TDFPC"},
+
+ /* List Terminator */
+ {}
+};
+
+/*
+ * e1000_regdump - register printout routine
+ */
+static void e1000_regdump(struct e1000_hw *hw, struct e1000_reg_info *reginfo)
+{
+ int n = 0;
+ char rname[16];
+ u32 regs[8];
+
+ switch (reginfo->ofs) {
+ case E1000_RXDCTL(0):
+ for (n = 0; n < 2; n++)
+ regs[n] = __er32(hw, E1000_RXDCTL(n));
+ break;
+ case E1000_TXDCTL(0):
+ for (n = 0; n < 2; n++)
+ regs[n] = __er32(hw, E1000_TXDCTL(n));
+ break;
+ case E1000_TARC(0):
+ for (n = 0; n < 2; n++)
+ regs[n] = __er32(hw, E1000_TARC(n));
+ break;
+ default:
+ printk(KERN_INFO "%-15s %08x\n",
+ reginfo->name, __er32(hw, reginfo->ofs));
+ return;
+ }
+
+ snprintf(rname, 16, "%s%s", reginfo->name, "[0-1]");
+ printk(KERN_INFO "%-15s ", rname);
+ for (n = 0; n < 2; n++)
+ printk(KERN_CONT "%08x ", regs[n]);
+ printk(KERN_CONT "\n");
+}
+
+/*
+ * e1000e_dump - Print registers, Tx-ring and Rx-ring
+ */
+static void e1000e_dump(struct e1000_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ struct e1000_hw *hw = &adapter->hw;
+ struct e1000_reg_info *reginfo;
+ struct e1000_ring *tx_ring = adapter->tx_ring;
+ struct e1000_tx_desc *tx_desc;
+ struct my_u0 {
+ u64 a;
+ u64 b;
+ } *u0;
+ struct e1000_buffer *buffer_info;
+ struct e1000_ring *rx_ring = adapter->rx_ring;
+ union e1000_rx_desc_packet_split *rx_desc_ps;
+ struct e1000_rx_desc *rx_desc;
+ struct my_u1 {
+ u64 a;
+ u64 b;
+ u64 c;
+ u64 d;
+ } *u1;
+ u32 staterr;
+ int i = 0;
+
+ if (!netif_msg_hw(adapter))
+ return;
+
+ /* Print netdevice Info */
+ if (netdev) {
+ dev_info(&adapter->pdev->dev, "Net device Info\n");
+ printk(KERN_INFO "Device Name state "
+ "trans_start last_rx\n");
+ printk(KERN_INFO "%-15s %016lX %016lX %016lX\n",
+ netdev->name, netdev->state, netdev->trans_start,
+ netdev->last_rx);
+ }
+
+ /* Print Registers */
+ dev_info(&adapter->pdev->dev, "Register Dump\n");
+ printk(KERN_INFO " Register Name Value\n");
+ for (reginfo = (struct e1000_reg_info *)e1000_reg_info_tbl;
+ reginfo->name; reginfo++) {
+ e1000_regdump(hw, reginfo);
+ }
+
+ /* Print Tx Ring Summary */
+ if (!netdev || !netif_running(netdev))
+ goto exit;
+
+ dev_info(&adapter->pdev->dev, "Tx Ring Summary\n");
+ printk(KERN_INFO "Queue [NTU] [NTC] [bi(ntc)->dma ]"
+ " leng ntw timestamp\n");
+ buffer_info = &tx_ring->buffer_info[tx_ring->next_to_clean];
+ printk(KERN_INFO " %5d %5X %5X %016llX %04X %3X %016llX\n",
+ 0, tx_ring->next_to_use, tx_ring->next_to_clean,
+ (unsigned long long)buffer_info->dma,
+ buffer_info->length,
+ buffer_info->next_to_watch,
+ (unsigned long long)buffer_info->time_stamp);
+
+ /* Print Tx Ring */
+ if (!netif_msg_tx_done(adapter))
+ goto rx_ring_summary;
+
+ dev_info(&adapter->pdev->dev, "Tx Ring Dump\n");
+
+ /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended)
+ *
+ * Legacy Transmit Descriptor
+ * +--------------------------------------------------------------+
+ * 0 | Buffer Address [63:0] (Reserved on Write Back) |
+ * +--------------------------------------------------------------+
+ * 8 | Special | CSS | Status | CMD | CSO | Length |
+ * +--------------------------------------------------------------+
+ * 63 48 47 36 35 32 31 24 23 16 15 0
+ *
+ * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload
+ * 63 48 47 40 39 32 31 16 15 8 7 0
+ * +----------------------------------------------------------------+
+ * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS |
+ * +----------------------------------------------------------------+
+ * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN |
+ * +----------------------------------------------------------------+
+ * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
+ *
+ * Extended Data Descriptor (DTYP=0x1)
+ * +----------------------------------------------------------------+
+ * 0 | Buffer Address [63:0] |
+ * +----------------------------------------------------------------+
+ * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN |
+ * +----------------------------------------------------------------+
+ * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
+ */
+ printk(KERN_INFO "Tl[desc] [address 63:0 ] [SpeCssSCmCsLen]"
+ " [bi->dma ] leng ntw timestamp bi->skb "
+ "<-- Legacy format\n");
+ printk(KERN_INFO "Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen]"
+ " [bi->dma ] leng ntw timestamp bi->skb "
+ "<-- Ext Context format\n");
+ printk(KERN_INFO "Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen]"
+ " [bi->dma ] leng ntw timestamp bi->skb "
+ "<-- Ext Data format\n");
+ for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) {
+ tx_desc = E1000_TX_DESC(*tx_ring, i);
+ buffer_info = &tx_ring->buffer_info[i];
+ u0 = (struct my_u0 *)tx_desc;
+ printk(KERN_INFO "T%c[0x%03X] %016llX %016llX %016llX "
+ "%04X %3X %016llX %p",
+ (!(le64_to_cpu(u0->b) & (1 << 29)) ? 'l' :
+ ((le64_to_cpu(u0->b) & (1 << 20)) ? 'd' : 'c')), i,
+ (unsigned long long)le64_to_cpu(u0->a),
+ (unsigned long long)le64_to_cpu(u0->b),
+ (unsigned long long)buffer_info->dma,
+ buffer_info->length, buffer_info->next_to_watch,
+ (unsigned long long)buffer_info->time_stamp,
+ buffer_info->skb);
+ if (i == tx_ring->next_to_use && i == tx_ring->next_to_clean)
+ printk(KERN_CONT " NTC/U\n");
+ else if (i == tx_ring->next_to_use)
+ printk(KERN_CONT " NTU\n");
+ else if (i == tx_ring->next_to_clean)
+ printk(KERN_CONT " NTC\n");
+ else
+ printk(KERN_CONT "\n");
+
+ if (netif_msg_pktdata(adapter) && buffer_info->dma != 0)
+ print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS,
+ 16, 1, phys_to_virt(buffer_info->dma),
+ buffer_info->length, true);
+ }
+
+ /* Print Rx Ring Summary */
+rx_ring_summary:
+ dev_info(&adapter->pdev->dev, "Rx Ring Summary\n");
+ printk(KERN_INFO "Queue [NTU] [NTC]\n");
+ printk(KERN_INFO " %5d %5X %5X\n", 0,
+ rx_ring->next_to_use, rx_ring->next_to_clean);
+
+ /* Print Rx Ring */
+ if (!netif_msg_rx_status(adapter))
+ goto exit;
+
+ dev_info(&adapter->pdev->dev, "Rx Ring Dump\n");
+ switch (adapter->rx_ps_pages) {
+ case 1:
+ case 2:
+ case 3:
+ /* [Extended] Packet Split Receive Descriptor Format
+ *
+ * +-----------------------------------------------------+
+ * 0 | Buffer Address 0 [63:0] |
+ * +-----------------------------------------------------+
+ * 8 | Buffer Address 1 [63:0] |
+ * +-----------------------------------------------------+
+ * 16 | Buffer Address 2 [63:0] |
+ * +-----------------------------------------------------+
+ * 24 | Buffer Address 3 [63:0] |
+ * +-----------------------------------------------------+
+ */
+ printk(KERN_INFO "R [desc] [buffer 0 63:0 ] "
+ "[buffer 1 63:0 ] "
+ "[buffer 2 63:0 ] [buffer 3 63:0 ] [bi->dma ] "
+ "[bi->skb] <-- Ext Pkt Split format\n");
+ /* [Extended] Receive Descriptor (Write-Back) Format
+ *
+ * 63 48 47 32 31 13 12 8 7 4 3 0
+ * +------------------------------------------------------+
+ * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS |
+ * | Checksum | Ident | | Queue | | Type |
+ * +------------------------------------------------------+
+ * 8 | VLAN Tag | Length | Extended Error | Extended Status |
+ * +------------------------------------------------------+
+ * 63 48 47 32 31 20 19 0
+ */
+ printk(KERN_INFO "RWB[desc] [ck ipid mrqhsh] "
+ "[vl l0 ee es] "
+ "[ l3 l2 l1 hs] [reserved ] ---------------- "
+ "[bi->skb] <-- Ext Rx Write-Back format\n");
+ for (i = 0; i < rx_ring->count; i++) {
+ buffer_info = &rx_ring->buffer_info[i];
+ rx_desc_ps = E1000_RX_DESC_PS(*rx_ring, i);
+ u1 = (struct my_u1 *)rx_desc_ps;
+ staterr =
+ le32_to_cpu(rx_desc_ps->wb.middle.status_error);
+ if (staterr & E1000_RXD_STAT_DD) {
+ /* Descriptor Done */
+ printk(KERN_INFO "RWB[0x%03X] %016llX "
+ "%016llX %016llX %016llX "
+ "---------------- %p", i,
+ (unsigned long long)le64_to_cpu(u1->a),
+ (unsigned long long)le64_to_cpu(u1->b),
+ (unsigned long long)le64_to_cpu(u1->c),
+ (unsigned long long)le64_to_cpu(u1->d),
+ buffer_info->skb);
+ } else {
+ printk(KERN_INFO "R [0x%03X] %016llX "
+ "%016llX %016llX %016llX %016llX %p", i,
+ (unsigned long long)le64_to_cpu(u1->a),
+ (unsigned long long)le64_to_cpu(u1->b),
+ (unsigned long long)le64_to_cpu(u1->c),
+ (unsigned long long)le64_to_cpu(u1->d),
+ (unsigned long long)buffer_info->dma,
+ buffer_info->skb);
+
+ if (netif_msg_pktdata(adapter))
+ print_hex_dump(KERN_INFO, "",
+ DUMP_PREFIX_ADDRESS, 16, 1,
+ phys_to_virt(buffer_info->dma),
+ adapter->rx_ps_bsize0, true);
+ }
+
+ if (i == rx_ring->next_to_use)
+ printk(KERN_CONT " NTU\n");
+ else if (i == rx_ring->next_to_clean)
+ printk(KERN_CONT " NTC\n");
+ else
+ printk(KERN_CONT "\n");
+ }
+ break;
+ default:
+ case 0:
+ /* Legacy Receive Descriptor Format
+ *
+ * +-----------------------------------------------------+
+ * | Buffer Address [63:0] |
+ * +-----------------------------------------------------+
+ * | VLAN Tag | Errors | Status 0 | Packet csum | Length |
+ * +-----------------------------------------------------+
+ * 63 48 47 40 39 32 31 16 15 0
+ */
+ printk(KERN_INFO "Rl[desc] [address 63:0 ] "
+ "[vl er S cks ln] [bi->dma ] [bi->skb] "
+ "<-- Legacy format\n");
+ for (i = 0; rx_ring->desc && (i < rx_ring->count); i++) {
+ rx_desc = E1000_RX_DESC(*rx_ring, i);
+ buffer_info = &rx_ring->buffer_info[i];
+ u0 = (struct my_u0 *)rx_desc;
+ printk(KERN_INFO "Rl[0x%03X] %016llX %016llX "
+ "%016llX %p", i,
+ (unsigned long long)le64_to_cpu(u0->a),
+ (unsigned long long)le64_to_cpu(u0->b),
+ (unsigned long long)buffer_info->dma,
+ buffer_info->skb);
+ if (i == rx_ring->next_to_use)
+ printk(KERN_CONT " NTU\n");
+ else if (i == rx_ring->next_to_clean)
+ printk(KERN_CONT " NTC\n");
+ else
+ printk(KERN_CONT "\n");
+
+ if (netif_msg_pktdata(adapter))
+ print_hex_dump(KERN_INFO, "",
+ DUMP_PREFIX_ADDRESS,
+ 16, 1,
+ phys_to_virt(buffer_info->dma),
+ adapter->rx_buffer_len, true);
+ }
+ }
+
+exit:
+ return;
+}
+
+/**
+ * e1000_desc_unused - calculate if we have unused descriptors
+ **/
+static int e1000_desc_unused(struct e1000_ring *ring)
+{
+ if (ring->next_to_clean > ring->next_to_use)
+ return ring->next_to_clean - ring->next_to_use - 1;
+
+ return ring->count + ring->next_to_clean - ring->next_to_use - 1;
+}
+
+/**
+ * e1000_receive_skb - helper function to handle Rx indications
+ * @adapter: board private structure
+ * @status: descriptor status field as written by hardware
+ * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
+ * @skb: pointer to sk_buff to be indicated to stack
+ **/
+static void e1000_receive_skb(struct e1000_adapter *adapter,
+ struct net_device *netdev, struct sk_buff *skb,
+ u8 status, __le16 vlan)
+{
+ u16 tag = le16_to_cpu(vlan);
+ skb->protocol = eth_type_trans(skb, netdev);
+
+ if (status & E1000_RXD_STAT_VP)
+ __vlan_hwaccel_put_tag(skb, tag);
+
+ napi_gro_receive(&adapter->napi, skb);
+}
+
+/**
+ * e1000_rx_checksum - Receive Checksum Offload
+ * @adapter: board private structure
+ * @status_err: receive descriptor status and error fields
+ * @csum: receive descriptor csum field
+ * @sk_buff: socket buffer with received data
+ **/
+static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err,
+ u32 csum, struct sk_buff *skb)
+{
+ u16 status = (u16)status_err;
+ u8 errors = (u8)(status_err >> 24);
+
+ skb_checksum_none_assert(skb);
+
+ /* Ignore Checksum bit is set */
+ if (status & E1000_RXD_STAT_IXSM)
+ return;
+ /* TCP/UDP checksum error bit is set */
+ if (errors & E1000_RXD_ERR_TCPE) {
+ /* let the stack verify checksum errors */
+ adapter->hw_csum_err++;
+ return;
+ }
+
+ /* TCP/UDP Checksum has not been calculated */
+ if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)))
+ return;
+
+ /* It must be a TCP or UDP packet with a valid checksum */
+ if (status & E1000_RXD_STAT_TCPCS) {
+ /* TCP checksum is good */
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ } else {
+ /*
+ * IP fragment with UDP payload
+ * Hardware complements the payload checksum, so we undo it
+ * and then put the value in host order for further stack use.
+ */
+ __sum16 sum = (__force __sum16)htons(csum);
+ skb->csum = csum_unfold(~sum);
+ skb->ip_summed = CHECKSUM_COMPLETE;
+ }
+ adapter->hw_csum_good++;
+}
+
+/**
++ * e1000e_update_tail_wa - helper function for e1000e_update_[rt]dt_wa()
++ * @hw: pointer to the HW structure
++ * @tail: address of tail descriptor register
++ * @i: value to write to tail descriptor register
++ *
++ * When updating the tail register, the ME could be accessing Host CSR
++ * registers at the same time. Normally, this is handled in h/w by an
++ * arbiter but on some parts there is a bug that acknowledges Host accesses
++ * later than it should which could result in the descriptor register to
++ * have an incorrect value. Workaround this by checking the FWSM register
++ * which has bit 24 set while ME is accessing Host CSR registers, wait
++ * if it is set and try again a number of times.
++ **/
++static inline s32 e1000e_update_tail_wa(struct e1000_hw *hw, u8 __iomem * tail,
++ unsigned int i)
++{
++ unsigned int j = 0;
++
++ while ((j++ < E1000_ICH_FWSM_PCIM2PCI_COUNT) &&
++ (er32(FWSM) & E1000_ICH_FWSM_PCIM2PCI))
++ udelay(50);
++
++ writel(i, tail);
++
++ if ((j == E1000_ICH_FWSM_PCIM2PCI_COUNT) && (i != readl(tail)))
++ return E1000_ERR_SWFW_SYNC;
++
++ return 0;
++}
++
++static void e1000e_update_rdt_wa(struct e1000_adapter *adapter, unsigned int i)
++{
++ u8 __iomem *tail = (adapter->hw.hw_addr + adapter->rx_ring->tail);
++ struct e1000_hw *hw = &adapter->hw;
++
++ if (e1000e_update_tail_wa(hw, tail, i)) {
++ u32 rctl = er32(RCTL);
++ ew32(RCTL, rctl & ~E1000_RCTL_EN);
++ e_err("ME firmware caused invalid RDT - resetting\n");
++ schedule_work(&adapter->reset_task);
++ }
++}
++
++static void e1000e_update_tdt_wa(struct e1000_adapter *adapter, unsigned int i)
++{
++ u8 __iomem *tail = (adapter->hw.hw_addr + adapter->tx_ring->tail);
++ struct e1000_hw *hw = &adapter->hw;
++
++ if (e1000e_update_tail_wa(hw, tail, i)) {
++ u32 tctl = er32(TCTL);
++ ew32(TCTL, tctl & ~E1000_TCTL_EN);
++ e_err("ME firmware caused invalid TDT - resetting\n");
++ schedule_work(&adapter->reset_task);
++ }
++}
++
++/**
+ * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
+ * @adapter: address of board private structure
+ **/
+static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
+ int cleaned_count, gfp_t gfp)
+{
+ struct net_device *netdev = adapter->netdev;
+ struct pci_dev *pdev = adapter->pdev;
+ struct e1000_ring *rx_ring = adapter->rx_ring;
+ struct e1000_rx_desc *rx_desc;
+ struct e1000_buffer *buffer_info;
+ struct sk_buff *skb;
+ unsigned int i;
+ unsigned int bufsz = adapter->rx_buffer_len;
+
+ i = rx_ring->next_to_use;
+ buffer_info = &rx_ring->buffer_info[i];
+
+ while (cleaned_count--) {
+ skb = buffer_info->skb;
+ if (skb) {
+ skb_trim(skb, 0);
+ goto map_skb;
+ }
+
+ skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp);
+ if (!skb) {
+ /* Better luck next round */
+ adapter->alloc_rx_buff_failed++;
+ break;
+ }
+
+ buffer_info->skb = skb;
+map_skb:
+ buffer_info->dma = dma_map_single(&pdev->dev, skb->data,
+ adapter->rx_buffer_len,
+ DMA_FROM_DEVICE);
+ if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
+ dev_err(&pdev->dev, "Rx DMA map failed\n");
+ adapter->rx_dma_failed++;
+ break;
+ }
+
+ rx_desc = E1000_RX_DESC(*rx_ring, i);
+ rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
+
+ if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) {
+ /*
+ * Force memory writes to complete before letting h/w
+ * know there are new descriptors to fetch. (Only
+ * applicable for weak-ordered memory model archs,
+ * such as IA-64).
+ */
+ wmb();
- writel(i << 1, adapter->hw.hw_addr + rx_ring->tail);
++ if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
++ e1000e_update_rdt_wa(adapter, i);
++ else
++ writel(i, adapter->hw.hw_addr + rx_ring->tail);
+ }
+ i++;
+ if (i == rx_ring->count)
+ i = 0;
+ buffer_info = &rx_ring->buffer_info[i];
+ }
+
+ rx_ring->next_to_use = i;
+}
+
+/**
+ * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
+ * @adapter: address of board private structure
+ **/
+static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter,
+ int cleaned_count, gfp_t gfp)
+{
+ struct net_device *netdev = adapter->netdev;
+ struct pci_dev *pdev = adapter->pdev;
+ union e1000_rx_desc_packet_split *rx_desc;
+ struct e1000_ring *rx_ring = adapter->rx_ring;
+ struct e1000_buffer *buffer_info;
+ struct e1000_ps_page *ps_page;
+ struct sk_buff *skb;
+ unsigned int i, j;
+
+ i = rx_ring->next_to_use;
+ buffer_info = &rx_ring->buffer_info[i];
+
+ while (cleaned_count--) {
+ rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
+
+ for (j = 0; j < PS_PAGE_BUFFERS; j++) {
+ ps_page = &buffer_info->ps_pages[j];
+ if (j >= adapter->rx_ps_pages) {
+ /* all unused desc entries get hw null ptr */
+ rx_desc->read.buffer_addr[j + 1] =
+ ~cpu_to_le64(0);
+ continue;
+ }
+ if (!ps_page->page) {
+ ps_page->page = alloc_page(gfp);
+ if (!ps_page->page) {
+ adapter->alloc_rx_buff_failed++;
+ goto no_buffers;
+ }
+ ps_page->dma = dma_map_page(&pdev->dev,
+ ps_page->page,
+ 0, PAGE_SIZE,
+ DMA_FROM_DEVICE);
+ if (dma_mapping_error(&pdev->dev,
+ ps_page->dma)) {
+ dev_err(&adapter->pdev->dev,
+ "Rx DMA page map failed\n");
+ adapter->rx_dma_failed++;
+ goto no_buffers;
+ }
+ }
+ /*
+ * Refresh the desc even if buffer_addrs
+ * didn't change because each write-back
+ * erases this info.
+ */
+ rx_desc->read.buffer_addr[j + 1] =
+ cpu_to_le64(ps_page->dma);
+ }
+
+ skb = __netdev_alloc_skb_ip_align(netdev,
+ adapter->rx_ps_bsize0,
+ gfp);
+
+ if (!skb) {
+ adapter->alloc_rx_buff_failed++;
+ break;
+ }
+
+ buffer_info->skb = skb;
+ buffer_info->dma = dma_map_single(&pdev->dev, skb->data,
+ adapter->rx_ps_bsize0,
+ DMA_FROM_DEVICE);
+ if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
+ dev_err(&pdev->dev, "Rx DMA map failed\n");
+ adapter->rx_dma_failed++;
+ /* cleanup skb */
+ dev_kfree_skb_any(skb);
+ buffer_info->skb = NULL;
+ break;
+ }
+
+ rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma);
+
+ if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) {
+ /*
+ * Force memory writes to complete before letting h/w
+ * know there are new descriptors to fetch. (Only
+ * applicable for weak-ordered memory model archs,
+ * such as IA-64).
+ */
+ wmb();
- writel(i, adapter->hw.hw_addr + rx_ring->tail);
++ if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
++ e1000e_update_rdt_wa(adapter, i << 1);
++ else
++ writel(i << 1,
++ adapter->hw.hw_addr + rx_ring->tail);
+ }
+
+ i++;
+ if (i == rx_ring->count)
+ i = 0;
+ buffer_info = &rx_ring->buffer_info[i];
+ }
+
+no_buffers:
+ rx_ring->next_to_use = i;
+}
+
+/**
+ * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
+ * @adapter: address of board private structure
+ * @cleaned_count: number of buffers to allocate this pass
+ **/
+
+static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter,
+ int cleaned_count, gfp_t gfp)
+{
+ struct net_device *netdev = adapter->netdev;
+ struct pci_dev *pdev = adapter->pdev;
+ struct e1000_rx_desc *rx_desc;
+ struct e1000_ring *rx_ring = adapter->rx_ring;
+ struct e1000_buffer *buffer_info;
+ struct sk_buff *skb;
+ unsigned int i;
+ unsigned int bufsz = 256 - 16 /* for skb_reserve */;
+
+ i = rx_ring->next_to_use;
+ buffer_info = &rx_ring->buffer_info[i];
+
+ while (cleaned_count--) {
+ skb = buffer_info->skb;
+ if (skb) {
+ skb_trim(skb, 0);
+ goto check_page;
+ }
+
+ skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp);
+ if (unlikely(!skb)) {
+ /* Better luck next round */
+ adapter->alloc_rx_buff_failed++;
+ break;
+ }
+
+ buffer_info->skb = skb;
+check_page:
+ /* allocate a new page if necessary */
+ if (!buffer_info->page) {
+ buffer_info->page = alloc_page(gfp);
+ if (unlikely(!buffer_info->page)) {
+ adapter->alloc_rx_buff_failed++;
+ break;
+ }
+ }
+
+ if (!buffer_info->dma)
+ buffer_info->dma = dma_map_page(&pdev->dev,
+ buffer_info->page, 0,
+ PAGE_SIZE,
+ DMA_FROM_DEVICE);
+
+ rx_desc = E1000_RX_DESC(*rx_ring, i);
+ rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
+
+ if (unlikely(++i == rx_ring->count))
+ i = 0;
+ buffer_info = &rx_ring->buffer_info[i];
+ }
+
+ if (likely(rx_ring->next_to_use != i)) {
+ rx_ring->next_to_use = i;
+ if (unlikely(i-- == 0))
+ i = (rx_ring->count - 1);
+
+ /* Force memory writes to complete before letting h/w
+ * know there are new descriptors to fetch. (Only
+ * applicable for weak-ordered memory model archs,
+ * such as IA-64). */
+ wmb();
- ew32(RCTL, rctl & ~E1000_RCTL_EN);
++ if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
++ e1000e_update_rdt_wa(adapter, i);
++ else
++ writel(i, adapter->hw.hw_addr + rx_ring->tail);
+ }
+}
+
+/**
+ * e1000_clean_rx_irq - Send received data up the network stack; legacy
+ * @adapter: board private structure
+ *
+ * the return value indicates whether actual cleaning was done, there
+ * is no guarantee that everything was cleaned
+ **/
+static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
+ int *work_done, int work_to_do)
+{
+ struct net_device *netdev = adapter->netdev;
+ struct pci_dev *pdev = adapter->pdev;
+ struct e1000_hw *hw = &adapter->hw;
+ struct e1000_ring *rx_ring = adapter->rx_ring;
+ struct e1000_rx_desc *rx_desc, *next_rxd;
+ struct e1000_buffer *buffer_info, *next_buffer;
+ u32 length;
+ unsigned int i;
+ int cleaned_count = 0;
+ bool cleaned = 0;
+ unsigned int total_rx_bytes = 0, total_rx_packets = 0;
+
+ i = rx_ring->next_to_clean;
+ rx_desc = E1000_RX_DESC(*rx_ring, i);
+ buffer_info = &rx_ring->buffer_info[i];
+
+ while (rx_desc->status & E1000_RXD_STAT_DD) {
+ struct sk_buff *skb;
+ u8 status;
+
+ if (*work_done >= work_to_do)
+ break;
+ (*work_done)++;
+ rmb(); /* read descriptor and rx_buffer_info after status DD */
+
+ status = rx_desc->status;
+ skb = buffer_info->skb;
+ buffer_info->skb = NULL;
+
+ prefetch(skb->data - NET_IP_ALIGN);
+
+ i++;
+ if (i == rx_ring->count)
+ i = 0;
+ next_rxd = E1000_RX_DESC(*rx_ring, i);
+ prefetch(next_rxd);
+
+ next_buffer = &rx_ring->buffer_info[i];
+
+ cleaned = 1;
+ cleaned_count++;
+ dma_unmap_single(&pdev->dev,
+ buffer_info->dma,
+ adapter->rx_buffer_len,
+ DMA_FROM_DEVICE);
+ buffer_info->dma = 0;
+
+ length = le16_to_cpu(rx_desc->length);
+
+ /*
+ * !EOP means multiple descriptors were used to store a single
+ * packet, if that's the case we need to toss it. In fact, we
+ * need to toss every packet with the EOP bit clear and the
+ * next frame that _does_ have the EOP bit set, as it is by
+ * definition only a frame fragment
+ */
+ if (unlikely(!(status & E1000_RXD_STAT_EOP)))
+ adapter->flags2 |= FLAG2_IS_DISCARDING;
+
+ if (adapter->flags2 & FLAG2_IS_DISCARDING) {
+ /* All receives must fit into a single buffer */
+ e_dbg("Receive packet consumed multiple buffers\n");
+ /* recycle */
+ buffer_info->skb = skb;
+ if (status & E1000_RXD_STAT_EOP)
+ adapter->flags2 &= ~FLAG2_IS_DISCARDING;
+ goto next_desc;
+ }
+
+ if (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK) {
+ /* recycle */
+ buffer_info->skb = skb;
+ goto next_desc;
+ }
+
+ /* adjust length to remove Ethernet CRC */
+ if (!(adapter->flags2 & FLAG2_CRC_STRIPPING))
+ length -= 4;
+
+ total_rx_bytes += length;
+ total_rx_packets++;
+
+ /*
+ * code added for copybreak, this should improve
+ * performance for small packets with large amounts
+ * of reassembly being done in the stack
+ */
+ if (length < copybreak) {
+ struct sk_buff *new_skb =
+ netdev_alloc_skb_ip_align(netdev, length);
+ if (new_skb) {
+ skb_copy_to_linear_data_offset(new_skb,
+ -NET_IP_ALIGN,
+ (skb->data -
+ NET_IP_ALIGN),
+ (length +
+ NET_IP_ALIGN));
+ /* save the skb in buffer_info as good */
+ buffer_info->skb = skb;
+ skb = new_skb;
+ }
+ /* else just continue with the old one */
+ }
+ /* end copybreak code */
+ skb_put(skb, length);
+
+ /* Receive Checksum Offload */
+ e1000_rx_checksum(adapter,
+ (u32)(status) |
+ ((u32)(rx_desc->errors) << 24),
+ le16_to_cpu(rx_desc->csum), skb);
+
+ e1000_receive_skb(adapter, netdev, skb,status,rx_desc->special);
+
+next_desc:
+ rx_desc->status = 0;
+
+ /* return some buffers to hardware, one at a time is too slow */
+ if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
+ adapter->alloc_rx_buf(adapter, cleaned_count,
+ GFP_ATOMIC);
+ cleaned_count = 0;
+ }
+
+ /* use prefetched values */
+ rx_desc = next_rxd;
+ buffer_info = next_buffer;
+ }
+ rx_ring->next_to_clean = i;
+
+ cleaned_count = e1000_desc_unused(rx_ring);
+ if (cleaned_count)
+ adapter->alloc_rx_buf(adapter, cleaned_count, GFP_ATOMIC);
+
+ adapter->total_rx_bytes += total_rx_bytes;
+ adapter->total_rx_packets += total_rx_packets;
+ return cleaned;
+}
+
+static void e1000_put_txbuf(struct e1000_adapter *adapter,
+ struct e1000_buffer *buffer_info)
+{
+ if (buffer_info->dma) {
+ if (buffer_info->mapped_as_page)
+ dma_unmap_page(&adapter->pdev->dev, buffer_info->dma,
+ buffer_info->length, DMA_TO_DEVICE);
+ else
+ dma_unmap_single(&adapter->pdev->dev, buffer_info->dma,
+ buffer_info->length, DMA_TO_DEVICE);
+ buffer_info->dma = 0;
+ }
+ if (buffer_info->skb) {
+ dev_kfree_skb_any(buffer_info->skb);
+ buffer_info->skb = NULL;
+ }
+ buffer_info->time_stamp = 0;
+}
+
+static void e1000_print_hw_hang(struct work_struct *work)
+{
+ struct e1000_adapter *adapter = container_of(work,
+ struct e1000_adapter,
+ print_hang_task);
+ struct e1000_ring *tx_ring = adapter->tx_ring;
+ unsigned int i = tx_ring->next_to_clean;
+ unsigned int eop = tx_ring->buffer_info[i].next_to_watch;
+ struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop);
+ struct e1000_hw *hw = &adapter->hw;
+ u16 phy_status, phy_1000t_status, phy_ext_status;
+ u16 pci_status;
+
+ if (test_bit(__E1000_DOWN, &adapter->state))
+ return;
+
+ e1e_rphy(hw, PHY_STATUS, &phy_status);
+ e1e_rphy(hw, PHY_1000T_STATUS, &phy_1000t_status);
+ e1e_rphy(hw, PHY_EXT_STATUS, &phy_ext_status);
+
+ pci_read_config_word(adapter->pdev, PCI_STATUS, &pci_status);
+
+ /* detected Hardware unit hang */
+ e_err("Detected Hardware Unit Hang:\n"
+ " TDH <%x>\n"
+ " TDT <%x>\n"
+ " next_to_use <%x>\n"
+ " next_to_clean <%x>\n"
+ "buffer_info[next_to_clean]:\n"
+ " time_stamp <%lx>\n"
+ " next_to_watch <%x>\n"
+ " jiffies <%lx>\n"
+ " next_to_watch.status <%x>\n"
+ "MAC Status <%x>\n"
+ "PHY Status <%x>\n"
+ "PHY 1000BASE-T Status <%x>\n"
+ "PHY Extended Status <%x>\n"
+ "PCI Status <%x>\n",
+ readl(adapter->hw.hw_addr + tx_ring->head),
+ readl(adapter->hw.hw_addr + tx_ring->tail),
+ tx_ring->next_to_use,
+ tx_ring->next_to_clean,
+ tx_ring->buffer_info[eop].time_stamp,
+ eop,
+ jiffies,
+ eop_desc->upper.fields.status,
+ er32(STATUS),
+ phy_status,
+ phy_1000t_status,
+ phy_ext_status,
+ pci_status);
+}
+
+/**
+ * e1000_clean_tx_irq - Reclaim resources after transmit completes
+ * @adapter: board private structure
+ *
+ * the return value indicates whether actual cleaning was done, there
+ * is no guarantee that everything was cleaned
+ **/
+static bool e1000_clean_tx_irq(struct e1000_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ struct e1000_hw *hw = &adapter->hw;
+ struct e1000_ring *tx_ring = adapter->tx_ring;
+ struct e1000_tx_desc *tx_desc, *eop_desc;
+ struct e1000_buffer *buffer_info;
+ unsigned int i, eop;
+ unsigned int count = 0;
+ unsigned int total_tx_bytes = 0, total_tx_packets = 0;
+
+ i = tx_ring->next_to_clean;
+ eop = tx_ring->buffer_info[i].next_to_watch;
+ eop_desc = E1000_TX_DESC(*tx_ring, eop);
+
+ while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) &&
+ (count < tx_ring->count)) {
+ bool cleaned = false;
+ rmb(); /* read buffer_info after eop_desc */
+ for (; !cleaned; count++) {
+ tx_desc = E1000_TX_DESC(*tx_ring, i);
+ buffer_info = &tx_ring->buffer_info[i];
+ cleaned = (i == eop);
+
+ if (cleaned) {
+ total_tx_packets += buffer_info->segs;
+ total_tx_bytes += buffer_info->bytecount;
+ }
+
+ e1000_put_txbuf(adapter, buffer_info);
+ tx_desc->upper.data = 0;
+
+ i++;
+ if (i == tx_ring->count)
+ i = 0;
+ }
+
+ if (i == tx_ring->next_to_use)
+ break;
+ eop = tx_ring->buffer_info[i].next_to_watch;
+ eop_desc = E1000_TX_DESC(*tx_ring, eop);
+ }
+
+ tx_ring->next_to_clean = i;
+
+#define TX_WAKE_THRESHOLD 32
+ if (count && netif_carrier_ok(netdev) &&
+ e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) {
+ /* Make sure that anybody stopping the queue after this
+ * sees the new next_to_clean.
+ */
+ smp_mb();
+
+ if (netif_queue_stopped(netdev) &&
+ !(test_bit(__E1000_DOWN, &adapter->state))) {
+ netif_wake_queue(netdev);
+ ++adapter->restart_queue;
+ }
+ }
+
+ if (adapter->detect_tx_hung) {
+ /*
+ * Detect a transmit hang in hardware, this serializes the
+ * check with the clearing of time_stamp and movement of i
+ */
+ adapter->detect_tx_hung = 0;
+ if (tx_ring->buffer_info[i].time_stamp &&
+ time_after(jiffies, tx_ring->buffer_info[i].time_stamp
+ + (adapter->tx_timeout_factor * HZ)) &&
+ !(er32(STATUS) & E1000_STATUS_TXOFF)) {
+ schedule_work(&adapter->print_hang_task);
+ netif_stop_queue(netdev);
+ }
+ }
+ adapter->total_tx_bytes += total_tx_bytes;
+ adapter->total_tx_packets += total_tx_packets;
+ return count < tx_ring->count;
+}
+
+/**
+ * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
+ * @adapter: board private structure
+ *
+ * the return value indicates whether actual cleaning was done, there
+ * is no guarantee that everything was cleaned
+ **/
+static bool e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
+ int *work_done, int work_to_do)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ union e1000_rx_desc_packet_split *rx_desc, *next_rxd;
+ struct net_device *netdev = adapter->netdev;
+ struct pci_dev *pdev = adapter->pdev;
+ struct e1000_ring *rx_ring = adapter->rx_ring;
+ struct e1000_buffer *buffer_info, *next_buffer;
+ struct e1000_ps_page *ps_page;
+ struct sk_buff *skb;
+ unsigned int i, j;
+ u32 length, staterr;
+ int cleaned_count = 0;
+ bool cleaned = 0;
+ unsigned int total_rx_bytes = 0, total_rx_packets = 0;
+
+ i = rx_ring->next_to_clean;
+ rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
+ staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
+ buffer_info = &rx_ring->buffer_info[i];
+
+ while (staterr & E1000_RXD_STAT_DD) {
+ if (*work_done >= work_to_do)
+ break;
+ (*work_done)++;
+ skb = buffer_info->skb;
+ rmb(); /* read descriptor and rx_buffer_info after status DD */
+
+ /* in the packet split case this is header only */
+ prefetch(skb->data - NET_IP_ALIGN);
+
+ i++;
+ if (i == rx_ring->count)
+ i = 0;
+ next_rxd = E1000_RX_DESC_PS(*rx_ring, i);
+ prefetch(next_rxd);
+
+ next_buffer = &rx_ring->buffer_info[i];
+
+ cleaned = 1;
+ cleaned_count++;
+ dma_unmap_single(&pdev->dev, buffer_info->dma,
+ adapter->rx_ps_bsize0, DMA_FROM_DEVICE);
+ buffer_info->dma = 0;
+
+ /* see !EOP comment in other Rx routine */
+ if (!(staterr & E1000_RXD_STAT_EOP))
+ adapter->flags2 |= FLAG2_IS_DISCARDING;
+
+ if (adapter->flags2 & FLAG2_IS_DISCARDING) {
+ e_dbg("Packet Split buffers didn't pick up the full "
+ "packet\n");
+ dev_kfree_skb_irq(skb);
+ if (staterr & E1000_RXD_STAT_EOP)
+ adapter->flags2 &= ~FLAG2_IS_DISCARDING;
+ goto next_desc;
+ }
+
+ if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) {
+ dev_kfree_skb_irq(skb);
+ goto next_desc;
+ }
+
+ length = le16_to_cpu(rx_desc->wb.middle.length0);
+
+ if (!length) {
+ e_dbg("Last part of the packet spanning multiple "
+ "descriptors\n");
+ dev_kfree_skb_irq(skb);
+ goto next_desc;
+ }
+
+ /* Good Receive */
+ skb_put(skb, length);
+
+ {
+ /*
+ * this looks ugly, but it seems compiler issues make it
+ * more efficient than reusing j
+ */
+ int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]);
+
+ /*
+ * page alloc/put takes too long and effects small packet
+ * throughput, so unsplit small packets and save the alloc/put
+ * only valid in softirq (napi) context to call kmap_*
+ */
+ if (l1 && (l1 <= copybreak) &&
+ ((length + l1) <= adapter->rx_ps_bsize0)) {
+ u8 *vaddr;
+
+ ps_page = &buffer_info->ps_pages[0];
+
+ /*
+ * there is no documentation about how to call
+ * kmap_atomic, so we can't hold the mapping
+ * very long
+ */
+ dma_sync_single_for_cpu(&pdev->dev, ps_page->dma,
+ PAGE_SIZE, DMA_FROM_DEVICE);
+ vaddr = kmap_atomic(ps_page->page, KM_SKB_DATA_SOFTIRQ);
+ memcpy(skb_tail_pointer(skb), vaddr, l1);
+ kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ);
+ dma_sync_single_for_device(&pdev->dev, ps_page->dma,
+ PAGE_SIZE, DMA_FROM_DEVICE);
+
+ /* remove the CRC */
+ if (!(adapter->flags2 & FLAG2_CRC_STRIPPING))
+ l1 -= 4;
+
+ skb_put(skb, l1);
+ goto copydone;
+ } /* if */
+ }
+
+ for (j = 0; j < PS_PAGE_BUFFERS; j++) {
+ length = le16_to_cpu(rx_desc->wb.upper.length[j]);
+ if (!length)
+ break;
+
+ ps_page = &buffer_info->ps_pages[j];
+ dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE,
+ DMA_FROM_DEVICE);
+ ps_page->dma = 0;
+ skb_fill_page_desc(skb, j, ps_page->page, 0, length);
+ ps_page->page = NULL;
+ skb->len += length;
+ skb->data_len += length;
+ skb->truesize += length;
+ }
+
+ /* strip the ethernet crc, problem is we're using pages now so
+ * this whole operation can get a little cpu intensive
+ */
+ if (!(adapter->flags2 & FLAG2_CRC_STRIPPING))
+ pskb_trim(skb, skb->len - 4);
+
+copydone:
+ total_rx_bytes += skb->len;
+ total_rx_packets++;
+
+ e1000_rx_checksum(adapter, staterr, le16_to_cpu(
+ rx_desc->wb.lower.hi_dword.csum_ip.csum), skb);
+
+ if (rx_desc->wb.upper.header_status &
+ cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP))
+ adapter->rx_hdr_split++;
+
+ e1000_receive_skb(adapter, netdev, skb,
+ staterr, rx_desc->wb.middle.vlan);
+
+next_desc:
+ rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF);
+ buffer_info->skb = NULL;
+
+ /* return some buffers to hardware, one at a time is too slow */
+ if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
+ adapter->alloc_rx_buf(adapter, cleaned_count,
+ GFP_ATOMIC);
+ cleaned_count = 0;
+ }
+
+ /* use prefetched values */
+ rx_desc = next_rxd;
+ buffer_info = next_buffer;
+
+ staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
+ }
+ rx_ring->next_to_clean = i;
+
+ cleaned_count = e1000_desc_unused(rx_ring);
+ if (cleaned_count)
+ adapter->alloc_rx_buf(adapter, cleaned_count, GFP_ATOMIC);
+
+ adapter->total_rx_bytes += total_rx_bytes;
+ adapter->total_rx_packets += total_rx_packets;
+ return cleaned;
+}
+
+/**
+ * e1000_consume_page - helper function
+ **/
+static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb,
+ u16 length)
+{
+ bi->page = NULL;
+ skb->len += length;
+ skb->data_len += length;
+ skb->truesize += length;
+}
+
+/**
+ * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
+ * @adapter: board private structure
+ *
+ * the return value indicates whether actual cleaning was done, there
+ * is no guarantee that everything was cleaned
+ **/
+
+static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter,
+ int *work_done, int work_to_do)
+{
+ struct net_device *netdev = adapter->netdev;
+ struct pci_dev *pdev = adapter->pdev;
+ struct e1000_ring *rx_ring = adapter->rx_ring;
+ struct e1000_rx_desc *rx_desc, *next_rxd;
+ struct e1000_buffer *buffer_info, *next_buffer;
+ u32 length;
+ unsigned int i;
+ int cleaned_count = 0;
+ bool cleaned = false;
+ unsigned int total_rx_bytes=0, total_rx_packets=0;
+
+ i = rx_ring->next_to_clean;
+ rx_desc = E1000_RX_DESC(*rx_ring, i);
+ buffer_info = &rx_ring->buffer_info[i];
+
+ while (rx_desc->status & E1000_RXD_STAT_DD) {
+ struct sk_buff *skb;
+ u8 status;
+
+ if (*work_done >= work_to_do)
+ break;
+ (*work_done)++;
+ rmb(); /* read descriptor and rx_buffer_info after status DD */
+
+ status = rx_desc->status;
+ skb = buffer_info->skb;
+ buffer_info->skb = NULL;
+
+ ++i;
+ if (i == rx_ring->count)
+ i = 0;
+ next_rxd = E1000_RX_DESC(*rx_ring, i);
+ prefetch(next_rxd);
+
+ next_buffer = &rx_ring->buffer_info[i];
+
+ cleaned = true;
+ cleaned_count++;
+ dma_unmap_page(&pdev->dev, buffer_info->dma, PAGE_SIZE,
+ DMA_FROM_DEVICE);
+ buffer_info->dma = 0;
+
+ length = le16_to_cpu(rx_desc->length);
+
+ /* errors is only valid for DD + EOP descriptors */
+ if (unlikely((status & E1000_RXD_STAT_EOP) &&
+ (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK))) {
+ /* recycle both page and skb */
+ buffer_info->skb = skb;
+ /* an error means any chain goes out the window
+ * too */
+ if (rx_ring->rx_skb_top)
+ dev_kfree_skb_irq(rx_ring->rx_skb_top);
+ rx_ring->rx_skb_top = NULL;
+ goto next_desc;
+ }
+
+#define rxtop (rx_ring->rx_skb_top)
+ if (!(status & E1000_RXD_STAT_EOP)) {
+ /* this descriptor is only the beginning (or middle) */
+ if (!rxtop) {
+ /* this is the beginning of a chain */
+ rxtop = skb;
+ skb_fill_page_desc(rxtop, 0, buffer_info->page,
+ 0, length);
+ } else {
+ /* this is the middle of a chain */
+ skb_fill_page_desc(rxtop,
+ skb_shinfo(rxtop)->nr_frags,
+ buffer_info->page, 0, length);
+ /* re-use the skb, only consumed the page */
+ buffer_info->skb = skb;
+ }
+ e1000_consume_page(buffer_info, rxtop, length);
+ goto next_desc;
+ } else {
+ if (rxtop) {
+ /* end of the chain */
+ skb_fill_page_desc(rxtop,
+ skb_shinfo(rxtop)->nr_frags,
+ buffer_info->page, 0, length);
+ /* re-use the current skb, we only consumed the
+ * page */
+ buffer_info->skb = skb;
+ skb = rxtop;
+ rxtop = NULL;
+ e1000_consume_page(buffer_info, skb, length);
+ } else {
+ /* no chain, got EOP, this buf is the packet
+ * copybreak to save the put_page/alloc_page */
+ if (length <= copybreak &&
+ skb_tailroom(skb) >= length) {
+ u8 *vaddr;
+ vaddr = kmap_atomic(buffer_info->page,
+ KM_SKB_DATA_SOFTIRQ);
+ memcpy(skb_tail_pointer(skb), vaddr,
+ length);
+ kunmap_atomic(vaddr,
+ KM_SKB_DATA_SOFTIRQ);
+ /* re-use the page, so don't erase
+ * buffer_info->page */
+ skb_put(skb, length);
+ } else {
+ skb_fill_page_desc(skb, 0,
+ buffer_info->page, 0,
+ length);
+ e1000_consume_page(buffer_info, skb,
+ length);
+ }
+ }
+ }
+
+ /* Receive Checksum Offload XXX recompute due to CRC strip? */
+ e1000_rx_checksum(adapter,
+ (u32)(status) |
+ ((u32)(rx_desc->errors) << 24),
+ le16_to_cpu(rx_desc->csum), skb);
+
+ /* probably a little skewed due to removing CRC */
+ total_rx_bytes += skb->len;
+ total_rx_packets++;
+
+ /* eth type trans needs skb->data to point to something */
+ if (!pskb_may_pull(skb, ETH_HLEN)) {
+ e_err("pskb_may_pull failed.\n");
+ dev_kfree_skb_irq(skb);
+ goto next_desc;
+ }
+
+ e1000_receive_skb(adapter, netdev, skb, status,
+ rx_desc->special);
+
+next_desc:
+ rx_desc->status = 0;
+
+ /* return some buffers to hardware, one at a time is too slow */
+ if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
+ adapter->alloc_rx_buf(adapter, cleaned_count,
+ GFP_ATOMIC);
+ cleaned_count = 0;
+ }
+
+ /* use prefetched values */
+ rx_desc = next_rxd;
+ buffer_info = next_buffer;
+ }
+ rx_ring->next_to_clean = i;
+
+ cleaned_count = e1000_desc_unused(rx_ring);
+ if (cleaned_count)
+ adapter->alloc_rx_buf(adapter, cleaned_count, GFP_ATOMIC);
+
+ adapter->total_rx_bytes += total_rx_bytes;
+ adapter->total_rx_packets += total_rx_packets;
+ return cleaned;
+}
+
+/**
+ * e1000_clean_rx_ring - Free Rx Buffers per Queue
+ * @adapter: board private structure
+ **/
+static void e1000_clean_rx_ring(struct e1000_adapter *adapter)
+{
+ struct e1000_ring *rx_ring = adapter->rx_ring;
+ struct e1000_buffer *buffer_info;
+ struct e1000_ps_page *ps_page;
+ struct pci_dev *pdev = adapter->pdev;
+ unsigned int i, j;
+
+ /* Free all the Rx ring sk_buffs */
+ for (i = 0; i < rx_ring->count; i++) {
+ buffer_info = &rx_ring->buffer_info[i];
+ if (buffer_info->dma) {
+ if (adapter->clean_rx == e1000_clean_rx_irq)
+ dma_unmap_single(&pdev->dev, buffer_info->dma,
+ adapter->rx_buffer_len,
+ DMA_FROM_DEVICE);
+ else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq)
+ dma_unmap_page(&pdev->dev, buffer_info->dma,
+ PAGE_SIZE,
+ DMA_FROM_DEVICE);
+ else if (adapter->clean_rx == e1000_clean_rx_irq_ps)
+ dma_unmap_single(&pdev->dev, buffer_info->dma,
+ adapter->rx_ps_bsize0,
+ DMA_FROM_DEVICE);
+ buffer_info->dma = 0;
+ }
+
+ if (buffer_info->page) {
+ put_page(buffer_info->page);
+ buffer_info->page = NULL;
+ }
+
+ if (buffer_info->skb) {
+ dev_kfree_skb(buffer_info->skb);
+ buffer_info->skb = NULL;
+ }
+
+ for (j = 0; j < PS_PAGE_BUFFERS; j++) {
+ ps_page = &buffer_info->ps_pages[j];
+ if (!ps_page->page)
+ break;
+ dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE,
+ DMA_FROM_DEVICE);
+ ps_page->dma = 0;
+ put_page(ps_page->page);
+ ps_page->page = NULL;
+ }
+ }
+
+ /* there also may be some cached data from a chained receive */
+ if (rx_ring->rx_skb_top) {
+ dev_kfree_skb(rx_ring->rx_skb_top);
+ rx_ring->rx_skb_top = NULL;
+ }
+
+ /* Zero out the descriptor ring */
+ memset(rx_ring->desc, 0, rx_ring->size);
+
+ rx_ring->next_to_clean = 0;
+ rx_ring->next_to_use = 0;
+ adapter->flags2 &= ~FLAG2_IS_DISCARDING;
+
+ writel(0, adapter->hw.hw_addr + rx_ring->head);
+ writel(0, adapter->hw.hw_addr + rx_ring->tail);
+}
+
+static void e1000e_downshift_workaround(struct work_struct *work)
+{
+ struct e1000_adapter *adapter = container_of(work,
+ struct e1000_adapter, downshift_task);
+
+ if (test_bit(__E1000_DOWN, &adapter->state))
+ return;
+
+ e1000e_gig_downshift_workaround_ich8lan(&adapter->hw);
+}
+
+/**
+ * e1000_intr_msi - Interrupt Handler
+ * @irq: interrupt number
+ * @data: pointer to a network interface device structure
+ **/
+static irqreturn_t e1000_intr_msi(int irq, void *data)
+{
+ struct net_device *netdev = data;
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+ struct e1000_hw *hw = &adapter->hw;
+ u32 icr = er32(ICR);
+
+ /*
+ * read ICR disables interrupts using IAM
+ */
+
+ if (icr & E1000_ICR_LSC) {
+ hw->mac.get_link_status = 1;
+ /*
+ * ICH8 workaround-- Call gig speed drop workaround on cable
+ * disconnect (LSC) before accessing any PHY registers
+ */
+ if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
+ (!(er32(STATUS) & E1000_STATUS_LU)))
+ schedule_work(&adapter->downshift_task);
+
+ /*
+ * 80003ES2LAN workaround-- For packet buffer work-around on
+ * link down event; disable receives here in the ISR and reset
+ * adapter in watchdog
+ */
+ if (netif_carrier_ok(netdev) &&
+ adapter->flags & FLAG_RX_NEEDS_RESTART) {
+ /* disable receives */
+ u32 rctl = er32(RCTL);
+ ew32(RCTL, rctl & ~E1000_RCTL_EN);
+ adapter->flags |= FLAG_RX_RESTART_NOW;
+ }
+ /* guard against interrupt when we're going down */
+ if (!test_bit(__E1000_DOWN, &adapter->state))
+ mod_timer(&adapter->watchdog_timer, jiffies + 1);
+ }
+
+ if (napi_schedule_prep(&adapter->napi)) {
+ adapter->total_tx_bytes = 0;
+ adapter->total_tx_packets = 0;
+ adapter->total_rx_bytes = 0;
+ adapter->total_rx_packets = 0;
+ __napi_schedule(&adapter->napi);
+ }
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * e1000_intr - Interrupt Handler
+ * @irq: interrupt number
+ * @data: pointer to a network interface device structure
+ **/
+static irqreturn_t e1000_intr(int irq, void *data)
+{
+ struct net_device *netdev = data;
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+ struct e1000_hw *hw = &adapter->hw;
+ u32 rctl, icr = er32(ICR);
+
+ if (!icr || test_bit(__E1000_DOWN, &adapter->state))
+ return IRQ_NONE; /* Not our interrupt */
+
+ /*
+ * IMS will not auto-mask if INT_ASSERTED is not set, and if it is
+ * not set, then the adapter didn't send an interrupt
+ */
+ if (!(icr & E1000_ICR_INT_ASSERTED))
+ return IRQ_NONE;
+
+ /*
+ * Interrupt Auto-Mask...upon reading ICR,
+ * interrupts are masked. No need for the
+ * IMC write
+ */
+
+ if (icr & E1000_ICR_LSC) {
+ hw->mac.get_link_status = 1;
+ /*
+ * ICH8 workaround-- Call gig speed drop workaround on cable
+ * disconnect (LSC) before accessing any PHY registers
+ */
+ if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
+ (!(er32(STATUS) & E1000_STATUS_LU)))
+ schedule_work(&adapter->downshift_task);
+
+ /*
+ * 80003ES2LAN workaround--
+ * For packet buffer work-around on link down event;
+ * disable receives here in the ISR and
+ * reset adapter in watchdog
+ */
+ if (netif_carrier_ok(netdev) &&
+ (adapter->flags & FLAG_RX_NEEDS_RESTART)) {
+ /* disable receives */
+ rctl = er32(RCTL);
+ ew32(RCTL, rctl & ~E1000_RCTL_EN);
+ adapter->flags |= FLAG_RX_RESTART_NOW;
+ }
+ /* guard against interrupt when we're going down */
+ if (!test_bit(__E1000_DOWN, &adapter->state))
+ mod_timer(&adapter->watchdog_timer, jiffies + 1);
+ }
+
+ if (napi_schedule_prep(&adapter->napi)) {
+ adapter->total_tx_bytes = 0;
+ adapter->total_tx_packets = 0;
+ adapter->total_rx_bytes = 0;
+ adapter->total_rx_packets = 0;
+ __napi_schedule(&adapter->napi);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t e1000_msix_other(int irq, void *data)
+{
+ struct net_device *netdev = data;
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+ struct e1000_hw *hw = &adapter->hw;
+ u32 icr = er32(ICR);
+
+ if (!(icr & E1000_ICR_INT_ASSERTED)) {
+ if (!test_bit(__E1000_DOWN, &adapter->state))
+ ew32(IMS, E1000_IMS_OTHER);
+ return IRQ_NONE;
+ }
+
+ if (icr & adapter->eiac_mask)
+ ew32(ICS, (icr & adapter->eiac_mask));
+
+ if (icr & E1000_ICR_OTHER) {
+ if (!(icr & E1000_ICR_LSC))
+ goto no_link_interrupt;
+ hw->mac.get_link_status = 1;
+ /* guard against interrupt when we're going down */
+ if (!test_bit(__E1000_DOWN, &adapter->state))
+ mod_timer(&adapter->watchdog_timer, jiffies + 1);
+ }
+
+no_link_interrupt:
+ if (!test_bit(__E1000_DOWN, &adapter->state))
+ ew32(IMS, E1000_IMS_LSC | E1000_IMS_OTHER);
+
+ return IRQ_HANDLED;
+}
+
+
+static irqreturn_t e1000_intr_msix_tx(int irq, void *data)
+{
+ struct net_device *netdev = data;
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+ struct e1000_hw *hw = &adapter->hw;
+ struct e1000_ring *tx_ring = adapter->tx_ring;
+
+
+ adapter->total_tx_bytes = 0;
+ adapter->total_tx_packets = 0;
+
+ if (!e1000_clean_tx_irq(adapter))
+ /* Ring was not completely cleaned, so fire another interrupt */
+ ew32(ICS, tx_ring->ims_val);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t e1000_intr_msix_rx(int irq, void *data)
+{
+ struct net_device *netdev = data;
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+
+ /* Write the ITR value calculated at the end of the
+ * previous interrupt.
+ */
+ if (adapter->rx_ring->set_itr) {
+ writel(1000000000 / (adapter->rx_ring->itr_val * 256),
+ adapter->hw.hw_addr + adapter->rx_ring->itr_register);
+ adapter->rx_ring->set_itr = 0;
+ }
+
+ if (napi_schedule_prep(&adapter->napi)) {
+ adapter->total_rx_bytes = 0;
+ adapter->total_rx_packets = 0;
+ __napi_schedule(&adapter->napi);
+ }
+ return IRQ_HANDLED;
+}
+
+/**
+ * e1000_configure_msix - Configure MSI-X hardware
+ *
+ * e1000_configure_msix sets up the hardware to properly
+ * generate MSI-X interrupts.
+ **/
+static void e1000_configure_msix(struct e1000_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ struct e1000_ring *rx_ring = adapter->rx_ring;
+ struct e1000_ring *tx_ring = adapter->tx_ring;
+ int vector = 0;
+ u32 ctrl_ext, ivar = 0;
+
+ adapter->eiac_mask = 0;
+
+ /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
+ if (hw->mac.type == e1000_82574) {
+ u32 rfctl = er32(RFCTL);
+ rfctl |= E1000_RFCTL_ACK_DIS;
+ ew32(RFCTL, rfctl);
+ }
+
+#define E1000_IVAR_INT_ALLOC_VALID 0x8
+ /* Configure Rx vector */
+ rx_ring->ims_val = E1000_IMS_RXQ0;
+ adapter->eiac_mask |= rx_ring->ims_val;
+ if (rx_ring->itr_val)
+ writel(1000000000 / (rx_ring->itr_val * 256),
+ hw->hw_addr + rx_ring->itr_register);
+ else
+ writel(1, hw->hw_addr + rx_ring->itr_register);
+ ivar = E1000_IVAR_INT_ALLOC_VALID | vector;
+
+ /* Configure Tx vector */
+ tx_ring->ims_val = E1000_IMS_TXQ0;
+ vector++;
+ if (tx_ring->itr_val)
+ writel(1000000000 / (tx_ring->itr_val * 256),
+ hw->hw_addr + tx_ring->itr_register);
+ else
+ writel(1, hw->hw_addr + tx_ring->itr_register);
+ adapter->eiac_mask |= tx_ring->ims_val;
+ ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 8);
+
+ /* set vector for Other Causes, e.g. link changes */
+ vector++;
+ ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 16);
+ if (rx_ring->itr_val)
+ writel(1000000000 / (rx_ring->itr_val * 256),
+ hw->hw_addr + E1000_EITR_82574(vector));
+ else
+ writel(1, hw->hw_addr + E1000_EITR_82574(vector));
+
+ /* Cause Tx interrupts on every write back */
+ ivar |= (1 << 31);
+
+ ew32(IVAR, ivar);
+
+ /* enable MSI-X PBA support */
+ ctrl_ext = er32(CTRL_EXT);
+ ctrl_ext |= E1000_CTRL_EXT_PBA_CLR;
+
+ /* Auto-Mask Other interrupts upon ICR read */
+#define E1000_EIAC_MASK_82574 0x01F00000
+ ew32(IAM, ~E1000_EIAC_MASK_82574 | E1000_IMS_OTHER);
+ ctrl_ext |= E1000_CTRL_EXT_EIAME;
+ ew32(CTRL_EXT, ctrl_ext);
+ e1e_flush();
+}
+
+void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter)
+{
+ if (adapter->msix_entries) {
+ pci_disable_msix(adapter->pdev);
+ kfree(adapter->msix_entries);
+ adapter->msix_entries = NULL;
+ } else if (adapter->flags & FLAG_MSI_ENABLED) {
+ pci_disable_msi(adapter->pdev);
+ adapter->flags &= ~FLAG_MSI_ENABLED;
+ }
+}
+
+/**
+ * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
+ *
+ * Attempt to configure interrupts using the best available
+ * capabilities of the hardware and kernel.
+ **/
+void e1000e_set_interrupt_capability(struct e1000_adapter *adapter)
+{
+ int err;
+ int i;
+
+ switch (adapter->int_mode) {
+ case E1000E_INT_MODE_MSIX:
+ if (adapter->flags & FLAG_HAS_MSIX) {
+ adapter->num_vectors = 3; /* RxQ0, TxQ0 and other */
+ adapter->msix_entries = kcalloc(adapter->num_vectors,
+ sizeof(struct msix_entry),
+ GFP_KERNEL);
+ if (adapter->msix_entries) {
+ for (i = 0; i < adapter->num_vectors; i++)
+ adapter->msix_entries[i].entry = i;
+
+ err = pci_enable_msix(adapter->pdev,
+ adapter->msix_entries,
+ adapter->num_vectors);
+ if (err == 0)
+ return;
+ }
+ /* MSI-X failed, so fall through and try MSI */
+ e_err("Failed to initialize MSI-X interrupts. "
+ "Falling back to MSI interrupts.\n");
+ e1000e_reset_interrupt_capability(adapter);
+ }
+ adapter->int_mode = E1000E_INT_MODE_MSI;
+ /* Fall through */
+ case E1000E_INT_MODE_MSI:
+ if (!pci_enable_msi(adapter->pdev)) {
+ adapter->flags |= FLAG_MSI_ENABLED;
+ } else {
+ adapter->int_mode = E1000E_INT_MODE_LEGACY;
+ e_err("Failed to initialize MSI interrupts. Falling "
+ "back to legacy interrupts.\n");
+ }
+ /* Fall through */
+ case E1000E_INT_MODE_LEGACY:
+ /* Don't do anything; this is the system default */
+ break;
+ }
+
+ /* store the number of vectors being used */
+ adapter->num_vectors = 1;
+}
+
+/**
+ * e1000_request_msix - Initialize MSI-X interrupts
+ *
+ * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
+ * kernel.
+ **/
+static int e1000_request_msix(struct e1000_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ int err = 0, vector = 0;
+
+ if (strlen(netdev->name) < (IFNAMSIZ - 5))
+ snprintf(adapter->rx_ring->name,
+ sizeof(adapter->rx_ring->name) - 1,
+ "%s-rx-0", netdev->name);
+ else
+ memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ);
+ err = request_irq(adapter->msix_entries[vector].vector,
+ e1000_intr_msix_rx, 0, adapter->rx_ring->name,
+ netdev);
+ if (err)
+ goto out;
+ adapter->rx_ring->itr_register = E1000_EITR_82574(vector);
+ adapter->rx_ring->itr_val = adapter->itr;
+ vector++;
+
+ if (strlen(netdev->name) < (IFNAMSIZ - 5))
+ snprintf(adapter->tx_ring->name,
+ sizeof(adapter->tx_ring->name) - 1,
+ "%s-tx-0", netdev->name);
+ else
+ memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ);
+ err = request_irq(adapter->msix_entries[vector].vector,
+ e1000_intr_msix_tx, 0, adapter->tx_ring->name,
+ netdev);
+ if (err)
+ goto out;
+ adapter->tx_ring->itr_register = E1000_EITR_82574(vector);
+ adapter->tx_ring->itr_val = adapter->itr;
+ vector++;
+
+ err = request_irq(adapter->msix_entries[vector].vector,
+ e1000_msix_other, 0, netdev->name, netdev);
+ if (err)
+ goto out;
+
+ e1000_configure_msix(adapter);
+ return 0;
+out:
+ return err;
+}
+
+/**
+ * e1000_request_irq - initialize interrupts
+ *
+ * Attempts to configure interrupts using the best available
+ * capabilities of the hardware and kernel.
+ **/
+static int e1000_request_irq(struct e1000_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ int err;
+
+ if (adapter->msix_entries) {
+ err = e1000_request_msix(adapter);
+ if (!err)
+ return err;
+ /* fall back to MSI */
+ e1000e_reset_interrupt_capability(adapter);
+ adapter->int_mode = E1000E_INT_MODE_MSI;
+ e1000e_set_interrupt_capability(adapter);
+ }
+ if (adapter->flags & FLAG_MSI_ENABLED) {
+ err = request_irq(adapter->pdev->irq, e1000_intr_msi, 0,
+ netdev->name, netdev);
+ if (!err)
+ return err;
+
+ /* fall back to legacy interrupt */
+ e1000e_reset_interrupt_capability(adapter);
+ adapter->int_mode = E1000E_INT_MODE_LEGACY;
+ }
+
+ err = request_irq(adapter->pdev->irq, e1000_intr, IRQF_SHARED,
+ netdev->name, netdev);
+ if (err)
+ e_err("Unable to allocate interrupt, Error: %d\n", err);
+
+ return err;
+}
+
+static void e1000_free_irq(struct e1000_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+
+ if (adapter->msix_entries) {
+ int vector = 0;
+
+ free_irq(adapter->msix_entries[vector].vector, netdev);
+ vector++;
+
+ free_irq(adapter->msix_entries[vector].vector, netdev);
+ vector++;
+
+ /* Other Causes interrupt vector */
+ free_irq(adapter->msix_entries[vector].vector, netdev);
+ return;
+ }
+
+ free_irq(adapter->pdev->irq, netdev);
+}
+
+/**
+ * e1000_irq_disable - Mask off interrupt generation on the NIC
+ **/
+static void e1000_irq_disable(struct e1000_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+
+ ew32(IMC, ~0);
+ if (adapter->msix_entries)
+ ew32(EIAC_82574, 0);
+ e1e_flush();
+
+ if (adapter->msix_entries) {
+ int i;
+ for (i = 0; i < adapter->num_vectors; i++)
+ synchronize_irq(adapter->msix_entries[i].vector);
+ } else {
+ synchronize_irq(adapter->pdev->irq);
+ }
+}
+
+/**
+ * e1000_irq_enable - Enable default interrupt generation settings
+ **/
+static void e1000_irq_enable(struct e1000_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+
+ if (adapter->msix_entries) {
+ ew32(EIAC_82574, adapter->eiac_mask & E1000_EIAC_MASK_82574);
+ ew32(IMS, adapter->eiac_mask | E1000_IMS_OTHER | E1000_IMS_LSC);
+ } else {
+ ew32(IMS, IMS_ENABLE_MASK);
+ }
+ e1e_flush();
+}
+
+/**
+ * e1000e_get_hw_control - get control of the h/w from f/w
+ * @adapter: address of board private structure
+ *
+ * e1000e_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
+ * For ASF and Pass Through versions of f/w this means that
+ * the driver is loaded. For AMT version (only with 82573)
+ * of the f/w this means that the network i/f is open.
+ **/
+void e1000e_get_hw_control(struct e1000_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ u32 ctrl_ext;
+ u32 swsm;
+
+ /* Let firmware know the driver has taken over */
+ if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
+ swsm = er32(SWSM);
+ ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD);
+ } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
+ ctrl_ext = er32(CTRL_EXT);
+ ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
+ }
+}
+
+/**
+ * e1000e_release_hw_control - release control of the h/w to f/w
+ * @adapter: address of board private structure
+ *
+ * e1000e_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
+ * For ASF and Pass Through versions of f/w this means that the
+ * driver is no longer loaded. For AMT version (only with 82573) i
+ * of the f/w this means that the network i/f is closed.
+ *
+ **/
+void e1000e_release_hw_control(struct e1000_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ u32 ctrl_ext;
+ u32 swsm;
+
+ /* Let firmware taken over control of h/w */
+ if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
+ swsm = er32(SWSM);
+ ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD);
+ } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
+ ctrl_ext = er32(CTRL_EXT);
+ ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
+ }
+}
+
+/**
+ * @e1000_alloc_ring - allocate memory for a ring structure
+ **/
+static int e1000_alloc_ring_dma(struct e1000_adapter *adapter,
+ struct e1000_ring *ring)
+{
+ struct pci_dev *pdev = adapter->pdev;
+
+ ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma,
+ GFP_KERNEL);
+ if (!ring->desc)
+ return -ENOMEM;
+
+ return 0;
+}
+
+/**
+ * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
+ * @adapter: board private structure
+ *
+ * Return 0 on success, negative on failure
+ **/
+int e1000e_setup_tx_resources(struct e1000_adapter *adapter)
+{
+ struct e1000_ring *tx_ring = adapter->tx_ring;
+ int err = -ENOMEM, size;
+
+ size = sizeof(struct e1000_buffer) * tx_ring->count;
+ tx_ring->buffer_info = vzalloc(size);
+ if (!tx_ring->buffer_info)
+ goto err;
+
+ /* round up to nearest 4K */
+ tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc);
+ tx_ring->size = ALIGN(tx_ring->size, 4096);
+
+ err = e1000_alloc_ring_dma(adapter, tx_ring);
+ if (err)
+ goto err;
+
+ tx_ring->next_to_use = 0;
+ tx_ring->next_to_clean = 0;
+
+ return 0;
+err:
+ vfree(tx_ring->buffer_info);
+ e_err("Unable to allocate memory for the transmit descriptor ring\n");
+ return err;
+}
+
+/**
+ * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
+ * @adapter: board private structure
+ *
+ * Returns 0 on success, negative on failure
+ **/
+int e1000e_setup_rx_resources(struct e1000_adapter *adapter)
+{
+ struct e1000_ring *rx_ring = adapter->rx_ring;
+ struct e1000_buffer *buffer_info;
+ int i, size, desc_len, err = -ENOMEM;
+
+ size = sizeof(struct e1000_buffer) * rx_ring->count;
+ rx_ring->buffer_info = vzalloc(size);
+ if (!rx_ring->buffer_info)
+ goto err;
+
+ for (i = 0; i < rx_ring->count; i++) {
+ buffer_info = &rx_ring->buffer_info[i];
+ buffer_info->ps_pages = kcalloc(PS_PAGE_BUFFERS,
+ sizeof(struct e1000_ps_page),
+ GFP_KERNEL);
+ if (!buffer_info->ps_pages)
+ goto err_pages;
+ }
+
+ desc_len = sizeof(union e1000_rx_desc_packet_split);
+
+ /* Round up to nearest 4K */
+ rx_ring->size = rx_ring->count * desc_len;
+ rx_ring->size = ALIGN(rx_ring->size, 4096);
+
+ err = e1000_alloc_ring_dma(adapter, rx_ring);
+ if (err)
+ goto err_pages;
+
+ rx_ring->next_to_clean = 0;
+ rx_ring->next_to_use = 0;
+ rx_ring->rx_skb_top = NULL;
+
+ return 0;
+
+err_pages:
+ for (i = 0; i < rx_ring->count; i++) {
+ buffer_info = &rx_ring->buffer_info[i];
+ kfree(buffer_info->ps_pages);
+ }
+err:
+ vfree(rx_ring->buffer_info);
+ e_err("Unable to allocate memory for the receive descriptor ring\n");
+ return err;
+}
+
+/**
+ * e1000_clean_tx_ring - Free Tx Buffers
+ * @adapter: board private structure
+ **/
+static void e1000_clean_tx_ring(struct e1000_adapter *adapter)
+{
+ struct e1000_ring *tx_ring = adapter->tx_ring;
+ struct e1000_buffer *buffer_info;
+ unsigned long size;
+ unsigned int i;
+
+ for (i = 0; i < tx_ring->count; i++) {
+ buffer_info = &tx_ring->buffer_info[i];
+ e1000_put_txbuf(adapter, buffer_info);
+ }
+
+ size = sizeof(struct e1000_buffer) * tx_ring->count;
+ memset(tx_ring->buffer_info, 0, size);
+
+ memset(tx_ring->desc, 0, tx_ring->size);
+
+ tx_ring->next_to_use = 0;
+ tx_ring->next_to_clean = 0;
+
+ writel(0, adapter->hw.hw_addr + tx_ring->head);
+ writel(0, adapter->hw.hw_addr + tx_ring->tail);
+}
+
+/**
+ * e1000e_free_tx_resources - Free Tx Resources per Queue
+ * @adapter: board private structure
+ *
+ * Free all transmit software resources
+ **/
+void e1000e_free_tx_resources(struct e1000_adapter *adapter)
+{
+ struct pci_dev *pdev = adapter->pdev;
+ struct e1000_ring *tx_ring = adapter->tx_ring;
+
+ e1000_clean_tx_ring(adapter);
+
+ vfree(tx_ring->buffer_info);
+ tx_ring->buffer_info = NULL;
+
+ dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
+ tx_ring->dma);
+ tx_ring->desc = NULL;
+}
+
+/**
+ * e1000e_free_rx_resources - Free Rx Resources
+ * @adapter: board private structure
+ *
+ * Free all receive software resources
+ **/
+
+void e1000e_free_rx_resources(struct e1000_adapter *adapter)
+{
+ struct pci_dev *pdev = adapter->pdev;
+ struct e1000_ring *rx_ring = adapter->rx_ring;
+ int i;
+
+ e1000_clean_rx_ring(adapter);
+
+ for (i = 0; i < rx_ring->count; i++)
+ kfree(rx_ring->buffer_info[i].ps_pages);
+
+ vfree(rx_ring->buffer_info);
+ rx_ring->buffer_info = NULL;
+
+ dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
+ rx_ring->dma);
+ rx_ring->desc = NULL;
+}
+
+/**
+ * e1000_update_itr - update the dynamic ITR value based on statistics
+ * @adapter: pointer to adapter
+ * @itr_setting: current adapter->itr
+ * @packets: the number of packets during this measurement interval
+ * @bytes: the number of bytes during this measurement interval
+ *
+ * Stores a new ITR value based on packets and byte
+ * counts during the last interrupt. The advantage of per interrupt
+ * computation is faster updates and more accurate ITR for the current
+ * traffic pattern. Constants in this function were computed
+ * based on theoretical maximum wire speed and thresholds were set based
+ * on testing data as well as attempting to minimize response time
+ * while increasing bulk throughput. This functionality is controlled
+ * by the InterruptThrottleRate module parameter.
+ **/
+static unsigned int e1000_update_itr(struct e1000_adapter *adapter,
+ u16 itr_setting, int packets,
+ int bytes)
+{
+ unsigned int retval = itr_setting;
+
+ if (packets == 0)
+ goto update_itr_done;
+
+ switch (itr_setting) {
+ case lowest_latency:
+ /* handle TSO and jumbo frames */
+ if (bytes/packets > 8000)
+ retval = bulk_latency;
+ else if ((packets < 5) && (bytes > 512))
+ retval = low_latency;
+ break;
+ case low_latency: /* 50 usec aka 20000 ints/s */
+ if (bytes > 10000) {
+ /* this if handles the TSO accounting */
+ if (bytes/packets > 8000)
+ retval = bulk_latency;
+ else if ((packets < 10) || ((bytes/packets) > 1200))
+ retval = bulk_latency;
+ else if ((packets > 35))
+ retval = lowest_latency;
+ } else if (bytes/packets > 2000) {
+ retval = bulk_latency;
+ } else if (packets <= 2 && bytes < 512) {
+ retval = lowest_latency;
+ }
+ break;
+ case bulk_latency: /* 250 usec aka 4000 ints/s */
+ if (bytes > 25000) {
+ if (packets > 35)
+ retval = low_latency;
+ } else if (bytes < 6000) {
+ retval = low_latency;
+ }
+ break;
+ }
+
+update_itr_done:
+ return retval;
+}
+
+static void e1000_set_itr(struct e1000_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ u16 current_itr;
+ u32 new_itr = adapter->itr;
+
+ /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
+ if (adapter->link_speed != SPEED_1000) {
+ current_itr = 0;
+ new_itr = 4000;
+ goto set_itr_now;
+ }
+
+ if (adapter->flags2 & FLAG2_DISABLE_AIM) {
+ new_itr = 0;
+ goto set_itr_now;
+ }
+
+ adapter->tx_itr = e1000_update_itr(adapter,
+ adapter->tx_itr,
+ adapter->total_tx_packets,
+ adapter->total_tx_bytes);
+ /* conservative mode (itr 3) eliminates the lowest_latency setting */
+ if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency)
+ adapter->tx_itr = low_latency;
+
+ adapter->rx_itr = e1000_update_itr(adapter,
+ adapter->rx_itr,
+ adapter->total_rx_packets,
+ adapter->total_rx_bytes);
+ /* conservative mode (itr 3) eliminates the lowest_latency setting */
+ if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
+ adapter->rx_itr = low_latency;
+
+ current_itr = max(adapter->rx_itr, adapter->tx_itr);
+
+ switch (current_itr) {
+ /* counts and packets in update_itr are dependent on these numbers */
+ case lowest_latency:
+ new_itr = 70000;
+ break;
+ case low_latency:
+ new_itr = 20000; /* aka hwitr = ~200 */
+ break;
+ case bulk_latency:
+ new_itr = 4000;
+ break;
+ default:
+ break;
+ }
+
+set_itr_now:
+ if (new_itr != adapter->itr) {
+ /*
+ * this attempts to bias the interrupt rate towards Bulk
+ * by adding intermediate steps when interrupt rate is
+ * increasing
+ */
+ new_itr = new_itr > adapter->itr ?
+ min(adapter->itr + (new_itr >> 2), new_itr) :
+ new_itr;
+ adapter->itr = new_itr;
+ adapter->rx_ring->itr_val = new_itr;
+ if (adapter->msix_entries)
+ adapter->rx_ring->set_itr = 1;
+ else
+ if (new_itr)
+ ew32(ITR, 1000000000 / (new_itr * 256));
+ else
+ ew32(ITR, 0);
+ }
+}
+
+/**
+ * e1000_alloc_queues - Allocate memory for all rings
+ * @adapter: board private structure to initialize
+ **/
+static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter)
+{
+ adapter->tx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL);
+ if (!adapter->tx_ring)
+ goto err;
+
+ adapter->rx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL);
+ if (!adapter->rx_ring)
+ goto err;
+
+ return 0;
+err:
+ e_err("Unable to allocate memory for queues\n");
+ kfree(adapter->rx_ring);
+ kfree(adapter->tx_ring);
+ return -ENOMEM;
+}
+
+/**
+ * e1000_clean - NAPI Rx polling callback
+ * @napi: struct associated with this polling callback
+ * @budget: amount of packets driver is allowed to process this poll
+ **/
+static int e1000_clean(struct napi_struct *napi, int budget)
+{
+ struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi);
+ struct e1000_hw *hw = &adapter->hw;
+ struct net_device *poll_dev = adapter->netdev;
+ int tx_cleaned = 1, work_done = 0;
+
+ adapter = netdev_priv(poll_dev);
+
+ if (adapter->msix_entries &&
+ !(adapter->rx_ring->ims_val & adapter->tx_ring->ims_val))
+ goto clean_rx;
+
+ tx_cleaned = e1000_clean_tx_irq(adapter);
+
+clean_rx:
+ adapter->clean_rx(adapter, &work_done, budget);
+
+ if (!tx_cleaned)
+ work_done = budget;
+
+ /* If budget not fully consumed, exit the polling mode */
+ if (work_done < budget) {
+ if (adapter->itr_setting & 3)
+ e1000_set_itr(adapter);
+ napi_complete(napi);
+ if (!test_bit(__E1000_DOWN, &adapter->state)) {
+ if (adapter->msix_entries)
+ ew32(IMS, adapter->rx_ring->ims_val);
+ else
+ e1000_irq_enable(adapter);
+ }
+ }
+
+ return work_done;
+}
+
+static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
+{
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+ struct e1000_hw *hw = &adapter->hw;
+ u32 vfta, index;
+
+ /* don't update vlan cookie if already programmed */
+ if ((adapter->hw.mng_cookie.status &
+ E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
+ (vid == adapter->mng_vlan_id))
+ return;
+
+ /* add VID to filter table */
+ if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
+ index = (vid >> 5) & 0x7F;
+ vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
+ vfta |= (1 << (vid & 0x1F));
+ hw->mac.ops.write_vfta(hw, index, vfta);
+ }
+
+ set_bit(vid, adapter->active_vlans);
+}
+
+static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
+{
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+ struct e1000_hw *hw = &adapter->hw;
+ u32 vfta, index;
+
+ if ((adapter->hw.mng_cookie.status &
+ E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
+ (vid == adapter->mng_vlan_id)) {
+ /* release control to f/w */
+ e1000e_release_hw_control(adapter);
+ return;
+ }
+
+ /* remove VID from filter table */
+ if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
+ index = (vid >> 5) & 0x7F;
+ vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
+ vfta &= ~(1 << (vid & 0x1F));
+ hw->mac.ops.write_vfta(hw, index, vfta);
+ }
+
+ clear_bit(vid, adapter->active_vlans);
+}
+
+/**
+ * e1000e_vlan_filter_disable - helper to disable hw VLAN filtering
+ * @adapter: board private structure to initialize
+ **/
+static void e1000e_vlan_filter_disable(struct e1000_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ struct e1000_hw *hw = &adapter->hw;
+ u32 rctl;
+
+ if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
+ /* disable VLAN receive filtering */
+ rctl = er32(RCTL);
+ rctl &= ~(E1000_RCTL_VFE | E1000_RCTL_CFIEN);
+ ew32(RCTL, rctl);
+
+ if (adapter->mng_vlan_id != (u16)E1000_MNG_VLAN_NONE) {
+ e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
+ adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
+ }
+ }
+}
+
+/**
+ * e1000e_vlan_filter_enable - helper to enable HW VLAN filtering
+ * @adapter: board private structure to initialize
+ **/
+static void e1000e_vlan_filter_enable(struct e1000_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ u32 rctl;
+
+ if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
+ /* enable VLAN receive filtering */
+ rctl = er32(RCTL);
+ rctl |= E1000_RCTL_VFE;
+ rctl &= ~E1000_RCTL_CFIEN;
+ ew32(RCTL, rctl);
+ }
+}
+
+/**
+ * e1000e_vlan_strip_enable - helper to disable HW VLAN stripping
+ * @adapter: board private structure to initialize
+ **/
+static void e1000e_vlan_strip_disable(struct e1000_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ u32 ctrl;
+
+ /* disable VLAN tag insert/strip */
+ ctrl = er32(CTRL);
+ ctrl &= ~E1000_CTRL_VME;
+ ew32(CTRL, ctrl);
+}
+
+/**
+ * e1000e_vlan_strip_enable - helper to enable HW VLAN stripping
+ * @adapter: board private structure to initialize
+ **/
+static void e1000e_vlan_strip_enable(struct e1000_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ u32 ctrl;
+
+ /* enable VLAN tag insert/strip */
+ ctrl = er32(CTRL);
+ ctrl |= E1000_CTRL_VME;
+ ew32(CTRL, ctrl);
+}
+
+static void e1000_update_mng_vlan(struct e1000_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ u16 vid = adapter->hw.mng_cookie.vlan_id;
+ u16 old_vid = adapter->mng_vlan_id;
+
+ if (adapter->hw.mng_cookie.status &
+ E1000_MNG_DHCP_COOKIE_STATUS_VLAN) {
+ e1000_vlan_rx_add_vid(netdev, vid);
+ adapter->mng_vlan_id = vid;
+ }
+
+ if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && (vid != old_vid))
+ e1000_vlan_rx_kill_vid(netdev, old_vid);
+}
+
+static void e1000_restore_vlan(struct e1000_adapter *adapter)
+{
+ u16 vid;
+
+ e1000_vlan_rx_add_vid(adapter->netdev, 0);
+
+ for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID)
+ e1000_vlan_rx_add_vid(adapter->netdev, vid);
+}
+
+static void e1000_init_manageability_pt(struct e1000_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ u32 manc, manc2h, mdef, i, j;
+
+ if (!(adapter->flags & FLAG_MNG_PT_ENABLED))
+ return;
+
+ manc = er32(MANC);
+
+ /*
+ * enable receiving management packets to the host. this will probably
+ * generate destination unreachable messages from the host OS, but
+ * the packets will be handled on SMBUS
+ */
+ manc |= E1000_MANC_EN_MNG2HOST;
+ manc2h = er32(MANC2H);
+
+ switch (hw->mac.type) {
+ default:
+ manc2h |= (E1000_MANC2H_PORT_623 | E1000_MANC2H_PORT_664);
+ break;
+ case e1000_82574:
+ case e1000_82583:
+ /*
+ * Check if IPMI pass-through decision filter already exists;
+ * if so, enable it.
+ */
+ for (i = 0, j = 0; i < 8; i++) {
+ mdef = er32(MDEF(i));
+
+ /* Ignore filters with anything other than IPMI ports */
+ if (mdef & ~(E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664))
+ continue;
+
+ /* Enable this decision filter in MANC2H */
+ if (mdef)
+ manc2h |= (1 << i);
+
+ j |= mdef;
+ }
+
+ if (j == (E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664))
+ break;
+
+ /* Create new decision filter in an empty filter */
+ for (i = 0, j = 0; i < 8; i++)
+ if (er32(MDEF(i)) == 0) {
+ ew32(MDEF(i), (E1000_MDEF_PORT_623 |
+ E1000_MDEF_PORT_664));
+ manc2h |= (1 << 1);
+ j++;
+ break;
+ }
+
+ if (!j)
+ e_warn("Unable to create IPMI pass-through filter\n");
+ break;
+ }
+
+ ew32(MANC2H, manc2h);
+ ew32(MANC, manc);
+}
+
+/**
+ * e1000_configure_tx - Configure Transmit Unit after Reset
+ * @adapter: board private structure
+ *
+ * Configure the Tx unit of the MAC after a reset.
+ **/
+static void e1000_configure_tx(struct e1000_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ struct e1000_ring *tx_ring = adapter->tx_ring;
+ u64 tdba;
+ u32 tdlen, tctl, tipg, tarc;
+ u32 ipgr1, ipgr2;
+
+ /* Setup the HW Tx Head and Tail descriptor pointers */
+ tdba = tx_ring->dma;
+ tdlen = tx_ring->count * sizeof(struct e1000_tx_desc);
+ ew32(TDBAL, (tdba & DMA_BIT_MASK(32)));
+ ew32(TDBAH, (tdba >> 32));
+ ew32(TDLEN, tdlen);
+ ew32(TDH, 0);
+ ew32(TDT, 0);
+ tx_ring->head = E1000_TDH;
+ tx_ring->tail = E1000_TDT;
+
+ /* Set the default values for the Tx Inter Packet Gap timer */
+ tipg = DEFAULT_82543_TIPG_IPGT_COPPER; /* 8 */
+ ipgr1 = DEFAULT_82543_TIPG_IPGR1; /* 8 */
+ ipgr2 = DEFAULT_82543_TIPG_IPGR2; /* 6 */
+
+ if (adapter->flags & FLAG_TIPG_MEDIUM_FOR_80003ESLAN)
+ ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2; /* 7 */
+
+ tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT;
+ tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT;
+ ew32(TIPG, tipg);
+
+ /* Set the Tx Interrupt Delay register */
+ ew32(TIDV, adapter->tx_int_delay);
+ /* Tx irq moderation */
+ ew32(TADV, adapter->tx_abs_int_delay);
+
+ if (adapter->flags2 & FLAG2_DMA_BURST) {
+ u32 txdctl = er32(TXDCTL(0));
+ txdctl &= ~(E1000_TXDCTL_PTHRESH | E1000_TXDCTL_HTHRESH |
+ E1000_TXDCTL_WTHRESH);
+ /*
+ * set up some performance related parameters to encourage the
+ * hardware to use the bus more efficiently in bursts, depends
+ * on the tx_int_delay to be enabled,
+ * wthresh = 5 ==> burst write a cacheline (64 bytes) at a time
+ * hthresh = 1 ==> prefetch when one or more available
+ * pthresh = 0x1f ==> prefetch if internal cache 31 or less
+ * BEWARE: this seems to work but should be considered first if
+ * there are Tx hangs or other Tx related bugs
+ */
+ txdctl |= E1000_TXDCTL_DMA_BURST_ENABLE;
+ ew32(TXDCTL(0), txdctl);
+ /* erratum work around: set txdctl the same for both queues */
+ ew32(TXDCTL(1), txdctl);
+ }
+
+ /* Program the Transmit Control Register */
+ tctl = er32(TCTL);
+ tctl &= ~E1000_TCTL_CT;
+ tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC |
+ (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
+
+ if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) {
+ tarc = er32(TARC(0));
+ /*
+ * set the speed mode bit, we'll clear it if we're not at
+ * gigabit link later
+ */
+#define SPEED_MODE_BIT (1 << 21)
+ tarc |= SPEED_MODE_BIT;
+ ew32(TARC(0), tarc);
+ }
+
+ /* errata: program both queues to unweighted RR */
+ if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) {
+ tarc = er32(TARC(0));
+ tarc |= 1;
+ ew32(TARC(0), tarc);
+ tarc = er32(TARC(1));
+ tarc |= 1;
+ ew32(TARC(1), tarc);
+ }
+
+ /* Setup Transmit Descriptor Settings for eop descriptor */
+ adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;
+
+ /* only set IDE if we are delaying interrupts using the timers */
+ if (adapter->tx_int_delay)
+ adapter->txd_cmd |= E1000_TXD_CMD_IDE;
+
+ /* enable Report Status bit */
+ adapter->txd_cmd |= E1000_TXD_CMD_RS;
+
+ ew32(TCTL, tctl);
+
+ e1000e_config_collision_dist(hw);
+}
+
+/**
+ * e1000_setup_rctl - configure the receive control registers
+ * @adapter: Board private structure
+ **/
+#define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
+ (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
+static void e1000_setup_rctl(struct e1000_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ u32 rctl, rfctl;
+ u32 pages = 0;
+
+ /* Workaround Si errata on 82579 - configure jumbo frame flow */
+ if (hw->mac.type == e1000_pch2lan) {
+ s32 ret_val;
+
+ if (adapter->netdev->mtu > ETH_DATA_LEN)
+ ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, true);
+ else
+ ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, false);
+
+ if (ret_val)
+ e_dbg("failed to enable jumbo frame workaround mode\n");
+ }
+
+ /* Program MC offset vector base */
+ rctl = er32(RCTL);
+ rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
+ rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
+ E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
+ (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
+
+ /* Do not Store bad packets */
+ rctl &= ~E1000_RCTL_SBP;
+
+ /* Enable Long Packet receive */
+ if (adapter->netdev->mtu <= ETH_DATA_LEN)
+ rctl &= ~E1000_RCTL_LPE;
+ else
+ rctl |= E1000_RCTL_LPE;
+
+ /* Some systems expect that the CRC is included in SMBUS traffic. The
+ * hardware strips the CRC before sending to both SMBUS (BMC) and to
+ * host memory when this is enabled
+ */
+ if (adapter->flags2 & FLAG2_CRC_STRIPPING)
+ rctl |= E1000_RCTL_SECRC;
+
+ /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */
+ if ((hw->phy.type == e1000_phy_82577) && (rctl & E1000_RCTL_LPE)) {
+ u16 phy_data;
+
+ e1e_rphy(hw, PHY_REG(770, 26), &phy_data);
+ phy_data &= 0xfff8;
+ phy_data |= (1 << 2);
+ e1e_wphy(hw, PHY_REG(770, 26), phy_data);
+
+ e1e_rphy(hw, 22, &phy_data);
+ phy_data &= 0x0fff;
+ phy_data |= (1 << 14);
+ e1e_wphy(hw, 0x10, 0x2823);
+ e1e_wphy(hw, 0x11, 0x0003);
+ e1e_wphy(hw, 22, phy_data);
+ }
+
+ /* Setup buffer sizes */
+ rctl &= ~E1000_RCTL_SZ_4096;
+ rctl |= E1000_RCTL_BSEX;
+ switch (adapter->rx_buffer_len) {
+ case 2048:
+ default:
+ rctl |= E1000_RCTL_SZ_2048;
+ rctl &= ~E1000_RCTL_BSEX;
+ break;
+ case 4096:
+ rctl |= E1000_RCTL_SZ_4096;
+ break;
+ case 8192:
+ rctl |= E1000_RCTL_SZ_8192;
+ break;
+ case 16384:
+ rctl |= E1000_RCTL_SZ_16384;
+ break;
+ }
+
+ /*
+ * 82571 and greater support packet-split where the protocol
+ * header is placed in skb->data and the packet data is
+ * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
+ * In the case of a non-split, skb->data is linearly filled,
+ * followed by the page buffers. Therefore, skb->data is
+ * sized to hold the largest protocol header.
+ *
+ * allocations using alloc_page take too long for regular MTU
+ * so only enable packet split for jumbo frames
+ *
+ * Using pages when the page size is greater than 16k wastes
+ * a lot of memory, since we allocate 3 pages at all times
+ * per packet.
+ */
+ pages = PAGE_USE_COUNT(adapter->netdev->mtu);
+ if (!(adapter->flags & FLAG_HAS_ERT) && (pages <= 3) &&
+ (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE))
+ adapter->rx_ps_pages = pages;
+ else
+ adapter->rx_ps_pages = 0;
+
+ if (adapter->rx_ps_pages) {
+ u32 psrctl = 0;
+
+ /* Configure extra packet-split registers */
+ rfctl = er32(RFCTL);
+ rfctl |= E1000_RFCTL_EXTEN;
+ /*
+ * disable packet split support for IPv6 extension headers,
+ * because some malformed IPv6 headers can hang the Rx
+ */
+ rfctl |= (E1000_RFCTL_IPV6_EX_DIS |
+ E1000_RFCTL_NEW_IPV6_EXT_DIS);
+
+ ew32(RFCTL, rfctl);
+
+ /* Enable Packet split descriptors */
+ rctl |= E1000_RCTL_DTYP_PS;
+
+ psrctl |= adapter->rx_ps_bsize0 >>
+ E1000_PSRCTL_BSIZE0_SHIFT;
+
+ switch (adapter->rx_ps_pages) {
+ case 3:
+ psrctl |= PAGE_SIZE <<
+ E1000_PSRCTL_BSIZE3_SHIFT;
+ case 2:
+ psrctl |= PAGE_SIZE <<
+ E1000_PSRCTL_BSIZE2_SHIFT;
+ case 1:
+ psrctl |= PAGE_SIZE >>
+ E1000_PSRCTL_BSIZE1_SHIFT;
+ break;
+ }
+
+ ew32(PSRCTL, psrctl);
+ }
+
+ ew32(RCTL, rctl);
+ /* just started the receive unit, no need to restart */
+ adapter->flags &= ~FLAG_RX_RESTART_NOW;
+}
+
+/**
+ * e1000_configure_rx - Configure Receive Unit after Reset
+ * @adapter: board private structure
+ *
+ * Configure the Rx unit of the MAC after a reset.
+ **/
+static void e1000_configure_rx(struct e1000_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ struct e1000_ring *rx_ring = adapter->rx_ring;
+ u64 rdba;
+ u32 rdlen, rctl, rxcsum, ctrl_ext;
+
+ if (adapter->rx_ps_pages) {
+ /* this is a 32 byte descriptor */
+ rdlen = rx_ring->count *
+ sizeof(union e1000_rx_desc_packet_split);
+ adapter->clean_rx = e1000_clean_rx_irq_ps;
+ adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps;
+ } else if (adapter->netdev->mtu > ETH_FRAME_LEN + ETH_FCS_LEN) {
+ rdlen = rx_ring->count * sizeof(struct e1000_rx_desc);
+ adapter->clean_rx = e1000_clean_jumbo_rx_irq;
+ adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers;
+ } else {
+ rdlen = rx_ring->count * sizeof(struct e1000_rx_desc);
+ adapter->clean_rx = e1000_clean_rx_irq;
+ adapter->alloc_rx_buf = e1000_alloc_rx_buffers;
+ }
+
+ /* disable receives while setting up the descriptors */
+ rctl = er32(RCTL);
- ew32(RCTL, rctl & ~E1000_RCTL_EN);
++ if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX))
++ ew32(RCTL, rctl & ~E1000_RCTL_EN);
+ e1e_flush();
+ usleep_range(10000, 20000);
+
+ if (adapter->flags2 & FLAG2_DMA_BURST) {
+ /*
+ * set the writeback threshold (only takes effect if the RDTR
+ * is set). set GRAN=1 and write back up to 0x4 worth, and
+ * enable prefetching of 0x20 Rx descriptors
+ * granularity = 01
+ * wthresh = 04,
+ * hthresh = 04,
+ * pthresh = 0x20
+ */
+ ew32(RXDCTL(0), E1000_RXDCTL_DMA_BURST_ENABLE);
+ ew32(RXDCTL(1), E1000_RXDCTL_DMA_BURST_ENABLE);
+
+ /*
+ * override the delay timers for enabling bursting, only if
+ * the value was not set by the user via module options
+ */
+ if (adapter->rx_int_delay == DEFAULT_RDTR)
+ adapter->rx_int_delay = BURST_RDTR;
+ if (adapter->rx_abs_int_delay == DEFAULT_RADV)
+ adapter->rx_abs_int_delay = BURST_RADV;
+ }
+
+ /* set the Receive Delay Timer Register */
+ ew32(RDTR, adapter->rx_int_delay);
+
+ /* irq moderation */
+ ew32(RADV, adapter->rx_abs_int_delay);
+ if ((adapter->itr_setting != 0) && (adapter->itr != 0))
+ ew32(ITR, 1000000000 / (adapter->itr * 256));
+
+ ctrl_ext = er32(CTRL_EXT);
+ /* Auto-Mask interrupts upon ICR access */
+ ctrl_ext |= E1000_CTRL_EXT_IAME;
+ ew32(IAM, 0xffffffff);
+ ew32(CTRL_EXT, ctrl_ext);
+ e1e_flush();
+
+ /*
+ * Setup the HW Rx Head and Tail Descriptor Pointers and
+ * the Base and Length of the Rx Descriptor Ring
+ */
+ rdba = rx_ring->dma;
+ ew32(RDBAL, (rdba & DMA_BIT_MASK(32)));
+ ew32(RDBAH, (rdba >> 32));
+ ew32(RDLEN, rdlen);
+ ew32(RDH, 0);
+ ew32(RDT, 0);
+ rx_ring->head = E1000_RDH;
+ rx_ring->tail = E1000_RDT;
+
+ /* Enable Receive Checksum Offload for TCP and UDP */
+ rxcsum = er32(RXCSUM);
+ if (adapter->flags & FLAG_RX_CSUM_ENABLED) {
+ rxcsum |= E1000_RXCSUM_TUOFL;
+
+ /*
+ * IPv4 payload checksum for UDP fragments must be
+ * used in conjunction with packet-split.
+ */
+ if (adapter->rx_ps_pages)
+ rxcsum |= E1000_RXCSUM_IPPCSE;
+ } else {
+ rxcsum &= ~E1000_RXCSUM_TUOFL;
+ /* no need to clear IPPCSE as it defaults to 0 */
+ }
+ ew32(RXCSUM, rxcsum);
+
+ /*
+ * Enable early receives on supported devices, only takes effect when
+ * packet size is equal or larger than the specified value (in 8 byte
+ * units), e.g. using jumbo frames when setting to E1000_ERT_2048
+ */
+ if ((adapter->flags & FLAG_HAS_ERT) ||
+ (adapter->hw.mac.type == e1000_pch2lan)) {
+ if (adapter->netdev->mtu > ETH_DATA_LEN) {
+ u32 rxdctl = er32(RXDCTL(0));
+ ew32(RXDCTL(0), rxdctl | 0x3);
+ if (adapter->flags & FLAG_HAS_ERT)
+ ew32(ERT, E1000_ERT_2048 | (1 << 13));
+ /*
+ * With jumbo frames and early-receive enabled,
+ * excessive C-state transition latencies result in
+ * dropped transactions.
+ */
+ pm_qos_update_request(&adapter->netdev->pm_qos_req, 55);
+ } else {
+ pm_qos_update_request(&adapter->netdev->pm_qos_req,
+ PM_QOS_DEFAULT_VALUE);
+ }
+ }
+
+ /* Enable Receives */
+ ew32(RCTL, rctl);
+}
+
+/**
+ * e1000_update_mc_addr_list - Update Multicast addresses
+ * @hw: pointer to the HW structure
+ * @mc_addr_list: array of multicast addresses to program
+ * @mc_addr_count: number of multicast addresses to program
+ *
+ * Updates the Multicast Table Array.
+ * The caller must have a packed mc_addr_list of multicast addresses.
+ **/
+static void e1000_update_mc_addr_list(struct e1000_hw *hw, u8 *mc_addr_list,
+ u32 mc_addr_count)
+{
+ hw->mac.ops.update_mc_addr_list(hw, mc_addr_list, mc_addr_count);
+}
+
+/**
+ * e1000_set_multi - Multicast and Promiscuous mode set
+ * @netdev: network interface device structure
+ *
+ * The set_multi entry point is called whenever the multicast address
+ * list or the network interface flags are updated. This routine is
+ * responsible for configuring the hardware for proper multicast,
+ * promiscuous mode, and all-multi behavior.
+ **/
+static void e1000_set_multi(struct net_device *netdev)
+{
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+ struct e1000_hw *hw = &adapter->hw;
+ struct netdev_hw_addr *ha;
+ u8 *mta_list;
+ u32 rctl;
+
+ /* Check for Promiscuous and All Multicast modes */
+
+ rctl = er32(RCTL);
+
+ if (netdev->flags & IFF_PROMISC) {
+ rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
+ rctl &= ~E1000_RCTL_VFE;
+ /* Do not hardware filter VLANs in promisc mode */
+ e1000e_vlan_filter_disable(adapter);
+ } else {
+ if (netdev->flags & IFF_ALLMULTI) {
+ rctl |= E1000_RCTL_MPE;
+ rctl &= ~E1000_RCTL_UPE;
+ } else {
+ rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
+ }
+ e1000e_vlan_filter_enable(adapter);
+ }
+
+ ew32(RCTL, rctl);
+
+ if (!netdev_mc_empty(netdev)) {
+ int i = 0;
+
+ mta_list = kmalloc(netdev_mc_count(netdev) * 6, GFP_ATOMIC);
+ if (!mta_list)
+ return;
+
+ /* prepare a packed array of only addresses. */
+ netdev_for_each_mc_addr(ha, netdev)
+ memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN);
+
+ e1000_update_mc_addr_list(hw, mta_list, i);
+ kfree(mta_list);
+ } else {
+ /*
+ * if we're called from probe, we might not have
+ * anything to do here, so clear out the list
+ */
+ e1000_update_mc_addr_list(hw, NULL, 0);
+ }
+
+ if (netdev->features & NETIF_F_HW_VLAN_RX)
+ e1000e_vlan_strip_enable(adapter);
+ else
+ e1000e_vlan_strip_disable(adapter);
+}
+
+/**
+ * e1000_configure - configure the hardware for Rx and Tx
+ * @adapter: private board structure
+ **/
+static void e1000_configure(struct e1000_adapter *adapter)
+{
+ e1000_set_multi(adapter->netdev);
+
+ e1000_restore_vlan(adapter);
+ e1000_init_manageability_pt(adapter);
+
+ e1000_configure_tx(adapter);
+ e1000_setup_rctl(adapter);
+ e1000_configure_rx(adapter);
+ adapter->alloc_rx_buf(adapter, e1000_desc_unused(adapter->rx_ring),
+ GFP_KERNEL);
+}
+
+/**
+ * e1000e_power_up_phy - restore link in case the phy was powered down
+ * @adapter: address of board private structure
+ *
+ * The phy may be powered down to save power and turn off link when the
+ * driver is unloaded and wake on lan is not enabled (among others)
+ * *** this routine MUST be followed by a call to e1000e_reset ***
+ **/
+void e1000e_power_up_phy(struct e1000_adapter *adapter)
+{
+ if (adapter->hw.phy.ops.power_up)
+ adapter->hw.phy.ops.power_up(&adapter->hw);
+
+ adapter->hw.mac.ops.setup_link(&adapter->hw);
+}
+
+/**
+ * e1000_power_down_phy - Power down the PHY
+ *
+ * Power down the PHY so no link is implied when interface is down.
+ * The PHY cannot be powered down if management or WoL is active.
+ */
+static void e1000_power_down_phy(struct e1000_adapter *adapter)
+{
+ /* WoL is enabled */
+ if (adapter->wol)
+ return;
+
+ if (adapter->hw.phy.ops.power_down)
+ adapter->hw.phy.ops.power_down(&adapter->hw);
+}
+
+/**
+ * e1000e_reset - bring the hardware into a known good state
+ *
+ * This function boots the hardware and enables some settings that
+ * require a configuration cycle of the hardware - those cannot be
+ * set/changed during runtime. After reset the device needs to be
+ * properly configured for Rx, Tx etc.
+ */
+void e1000e_reset(struct e1000_adapter *adapter)
+{
+ struct e1000_mac_info *mac = &adapter->hw.mac;
+ struct e1000_fc_info *fc = &adapter->hw.fc;
+ struct e1000_hw *hw = &adapter->hw;
+ u32 tx_space, min_tx_space, min_rx_space;
+ u32 pba = adapter->pba;
+ u16 hwm;
+
+ /* reset Packet Buffer Allocation to default */
+ ew32(PBA, pba);
+
+ if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) {
+ /*
+ * To maintain wire speed transmits, the Tx FIFO should be
+ * large enough to accommodate two full transmit packets,
+ * rounded up to the next 1KB and expressed in KB. Likewise,
+ * the Rx FIFO should be large enough to accommodate at least
+ * one full receive packet and is similarly rounded up and
+ * expressed in KB.
+ */
+ pba = er32(PBA);
+ /* upper 16 bits has Tx packet buffer allocation size in KB */
+ tx_space = pba >> 16;
+ /* lower 16 bits has Rx packet buffer allocation size in KB */
+ pba &= 0xffff;
+ /*
+ * the Tx fifo also stores 16 bytes of information about the Tx
+ * but don't include ethernet FCS because hardware appends it
+ */
+ min_tx_space = (adapter->max_frame_size +
+ sizeof(struct e1000_tx_desc) -
+ ETH_FCS_LEN) * 2;
+ min_tx_space = ALIGN(min_tx_space, 1024);
+ min_tx_space >>= 10;
+ /* software strips receive CRC, so leave room for it */
+ min_rx_space = adapter->max_frame_size;
+ min_rx_space = ALIGN(min_rx_space, 1024);
+ min_rx_space >>= 10;
+
+ /*
+ * If current Tx allocation is less than the min Tx FIFO size,
+ * and the min Tx FIFO size is less than the current Rx FIFO
+ * allocation, take space away from current Rx allocation
+ */
+ if ((tx_space < min_tx_space) &&
+ ((min_tx_space - tx_space) < pba)) {
+ pba -= min_tx_space - tx_space;
+
+ /*
+ * if short on Rx space, Rx wins and must trump Tx
+ * adjustment or use Early Receive if available
+ */
+ if ((pba < min_rx_space) &&
+ (!(adapter->flags & FLAG_HAS_ERT)))
+ /* ERT enabled in e1000_configure_rx */
+ pba = min_rx_space;
+ }
+
+ ew32(PBA, pba);
+ }
+
+ /*
+ * flow control settings
+ *
+ * The high water mark must be low enough to fit one full frame
+ * (or the size used for early receive) above it in the Rx FIFO.
+ * Set it to the lower of:
+ * - 90% of the Rx FIFO size, and
+ * - the full Rx FIFO size minus the early receive size (for parts
+ * with ERT support assuming ERT set to E1000_ERT_2048), or
+ * - the full Rx FIFO size minus one full frame
+ */
+ if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME)
+ fc->pause_time = 0xFFFF;
+ else
+ fc->pause_time = E1000_FC_PAUSE_TIME;
+ fc->send_xon = 1;
+ fc->current_mode = fc->requested_mode;
+
+ switch (hw->mac.type) {
+ default:
+ if ((adapter->flags & FLAG_HAS_ERT) &&
+ (adapter->netdev->mtu > ETH_DATA_LEN))
+ hwm = min(((pba << 10) * 9 / 10),
+ ((pba << 10) - (E1000_ERT_2048 << 3)));
+ else
+ hwm = min(((pba << 10) * 9 / 10),
+ ((pba << 10) - adapter->max_frame_size));
+
+ fc->high_water = hwm & E1000_FCRTH_RTH; /* 8-byte granularity */
+ fc->low_water = fc->high_water - 8;
+ break;
+ case e1000_pchlan:
+ /*
+ * Workaround PCH LOM adapter hangs with certain network
+ * loads. If hangs persist, try disabling Tx flow control.
+ */
+ if (adapter->netdev->mtu > ETH_DATA_LEN) {
+ fc->high_water = 0x3500;
+ fc->low_water = 0x1500;
+ } else {
+ fc->high_water = 0x5000;
+ fc->low_water = 0x3000;
+ }
+ fc->refresh_time = 0x1000;
+ break;
+ case e1000_pch2lan:
+ fc->high_water = 0x05C20;
+ fc->low_water = 0x05048;
+ fc->pause_time = 0x0650;
+ fc->refresh_time = 0x0400;
+ if (adapter->netdev->mtu > ETH_DATA_LEN) {
+ pba = 14;
+ ew32(PBA, pba);
+ }
+ break;
+ }
+
+ /*
+ * Disable Adaptive Interrupt Moderation if 2 full packets cannot
+ * fit in receive buffer and early-receive not supported.
+ */
+ if (adapter->itr_setting & 0x3) {
+ if (((adapter->max_frame_size * 2) > (pba << 10)) &&
+ !(adapter->flags & FLAG_HAS_ERT)) {
+ if (!(adapter->flags2 & FLAG2_DISABLE_AIM)) {
+ dev_info(&adapter->pdev->dev,
+ "Interrupt Throttle Rate turned off\n");
+ adapter->flags2 |= FLAG2_DISABLE_AIM;
+ ew32(ITR, 0);
+ }
+ } else if (adapter->flags2 & FLAG2_DISABLE_AIM) {
+ dev_info(&adapter->pdev->dev,
+ "Interrupt Throttle Rate turned on\n");
+ adapter->flags2 &= ~FLAG2_DISABLE_AIM;
+ adapter->itr = 20000;
+ ew32(ITR, 1000000000 / (adapter->itr * 256));
+ }
+ }
+
+ /* Allow time for pending master requests to run */
+ mac->ops.reset_hw(hw);
+
+ /*
+ * For parts with AMT enabled, let the firmware know
+ * that the network interface is in control
+ */
+ if (adapter->flags & FLAG_HAS_AMT)
+ e1000e_get_hw_control(adapter);
+
+ ew32(WUC, 0);
+
+ if (mac->ops.init_hw(hw))
+ e_err("Hardware Error\n");
+
+ e1000_update_mng_vlan(adapter);
+
+ /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
+ ew32(VET, ETH_P_8021Q);
+
+ e1000e_reset_adaptive(hw);
+
+ if (!netif_running(adapter->netdev) &&
+ !test_bit(__E1000_TESTING, &adapter->state)) {
+ e1000_power_down_phy(adapter);
+ return;
+ }
+
+ e1000_get_phy_info(hw);
+
+ if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) &&
+ !(adapter->flags & FLAG_SMART_POWER_DOWN)) {
+ u16 phy_data = 0;
+ /*
+ * speed up time to link by disabling smart power down, ignore
+ * the return value of this function because there is nothing
+ * different we would do if it failed
+ */
+ e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data);
+ phy_data &= ~IGP02E1000_PM_SPD;
+ e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data);
+ }
+}
+
+int e1000e_up(struct e1000_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+
+ /* hardware has been reset, we need to reload some things */
+ e1000_configure(adapter);
+
+ clear_bit(__E1000_DOWN, &adapter->state);
+
+ napi_enable(&adapter->napi);
+ if (adapter->msix_entries)
+ e1000_configure_msix(adapter);
+ e1000_irq_enable(adapter);
+
+ netif_start_queue(adapter->netdev);
+
+ /* fire a link change interrupt to start the watchdog */
+ if (adapter->msix_entries)
+ ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER);
+ else
+ ew32(ICS, E1000_ICS_LSC);
+
+ return 0;
+}
+
+static void e1000e_flush_descriptors(struct e1000_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+
+ if (!(adapter->flags2 & FLAG2_DMA_BURST))
+ return;
+
+ /* flush pending descriptor writebacks to memory */
+ ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
+ ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD);
+
+ /* execute the writes immediately */
+ e1e_flush();
+}
+
+static void e1000e_update_stats(struct e1000_adapter *adapter);
+
+void e1000e_down(struct e1000_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ struct e1000_hw *hw = &adapter->hw;
+ u32 tctl, rctl;
+
+ /*
+ * signal that we're down so the interrupt handler does not
+ * reschedule our watchdog timer
+ */
+ set_bit(__E1000_DOWN, &adapter->state);
+
+ /* disable receives in the hardware */
+ rctl = er32(RCTL);
- writel(i, adapter->hw.hw_addr + tx_ring->tail);
++ if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX))
++ ew32(RCTL, rctl & ~E1000_RCTL_EN);
+ /* flush and sleep below */
+
+ netif_stop_queue(netdev);
+
+ /* disable transmits in the hardware */
+ tctl = er32(TCTL);
+ tctl &= ~E1000_TCTL_EN;
+ ew32(TCTL, tctl);
++
+ /* flush both disables and wait for them to finish */
+ e1e_flush();
+ usleep_range(10000, 20000);
+
+ napi_disable(&adapter->napi);
+ e1000_irq_disable(adapter);
+
+ del_timer_sync(&adapter->watchdog_timer);
+ del_timer_sync(&adapter->phy_info_timer);
+
+ netif_carrier_off(netdev);
+
+ spin_lock(&adapter->stats64_lock);
+ e1000e_update_stats(adapter);
+ spin_unlock(&adapter->stats64_lock);
+
+ e1000e_flush_descriptors(adapter);
+ e1000_clean_tx_ring(adapter);
+ e1000_clean_rx_ring(adapter);
+
+ adapter->link_speed = 0;
+ adapter->link_duplex = 0;
+
+ if (!pci_channel_offline(adapter->pdev))
+ e1000e_reset(adapter);
+
+ /*
+ * TODO: for power management, we could drop the link and
+ * pci_disable_device here.
+ */
+}
+
+void e1000e_reinit_locked(struct e1000_adapter *adapter)
+{
+ might_sleep();
+ while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
+ usleep_range(1000, 2000);
+ e1000e_down(adapter);
+ e1000e_up(adapter);
+ clear_bit(__E1000_RESETTING, &adapter->state);
+}
+
+/**
+ * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
+ * @adapter: board private structure to initialize
+ *
+ * e1000_sw_init initializes the Adapter private data structure.
+ * Fields are initialized based on PCI device information and
+ * OS network device settings (MTU size).
+ **/
+static int __devinit e1000_sw_init(struct e1000_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+
+ adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN;
+ adapter->rx_ps_bsize0 = 128;
+ adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
+ adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
+
+ spin_lock_init(&adapter->stats64_lock);
+
+ e1000e_set_interrupt_capability(adapter);
+
+ if (e1000_alloc_queues(adapter))
+ return -ENOMEM;
+
+ /* Explicitly disable IRQ since the NIC can be in any state. */
+ e1000_irq_disable(adapter);
+
+ set_bit(__E1000_DOWN, &adapter->state);
+ return 0;
+}
+
+/**
+ * e1000_intr_msi_test - Interrupt Handler
+ * @irq: interrupt number
+ * @data: pointer to a network interface device structure
+ **/
+static irqreturn_t e1000_intr_msi_test(int irq, void *data)
+{
+ struct net_device *netdev = data;
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+ struct e1000_hw *hw = &adapter->hw;
+ u32 icr = er32(ICR);
+
+ e_dbg("icr is %08X\n", icr);
+ if (icr & E1000_ICR_RXSEQ) {
+ adapter->flags &= ~FLAG_MSI_TEST_FAILED;
+ wmb();
+ }
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * e1000_test_msi_interrupt - Returns 0 for successful test
+ * @adapter: board private struct
+ *
+ * code flow taken from tg3.c
+ **/
+static int e1000_test_msi_interrupt(struct e1000_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ struct e1000_hw *hw = &adapter->hw;
+ int err;
+
+ /* poll_enable hasn't been called yet, so don't need disable */
+ /* clear any pending events */
+ er32(ICR);
+
+ /* free the real vector and request a test handler */
+ e1000_free_irq(adapter);
+ e1000e_reset_interrupt_capability(adapter);
+
+ /* Assume that the test fails, if it succeeds then the test
+ * MSI irq handler will unset this flag */
+ adapter->flags |= FLAG_MSI_TEST_FAILED;
+
+ err = pci_enable_msi(adapter->pdev);
+ if (err)
+ goto msi_test_failed;
+
+ err = request_irq(adapter->pdev->irq, e1000_intr_msi_test, 0,
+ netdev->name, netdev);
+ if (err) {
+ pci_disable_msi(adapter->pdev);
+ goto msi_test_failed;
+ }
+
+ wmb();
+
+ e1000_irq_enable(adapter);
+
+ /* fire an unusual interrupt on the test handler */
+ ew32(ICS, E1000_ICS_RXSEQ);
+ e1e_flush();
+ msleep(50);
+
+ e1000_irq_disable(adapter);
+
+ rmb();
+
+ if (adapter->flags & FLAG_MSI_TEST_FAILED) {
+ adapter->int_mode = E1000E_INT_MODE_LEGACY;
+ e_info("MSI interrupt test failed, using legacy interrupt.\n");
+ } else
+ e_dbg("MSI interrupt test succeeded!\n");
+
+ free_irq(adapter->pdev->irq, netdev);
+ pci_disable_msi(adapter->pdev);
+
+msi_test_failed:
+ e1000e_set_interrupt_capability(adapter);
+ return e1000_request_irq(adapter);
+}
+
+/**
+ * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
+ * @adapter: board private struct
+ *
+ * code flow taken from tg3.c, called with e1000 interrupts disabled.
+ **/
+static int e1000_test_msi(struct e1000_adapter *adapter)
+{
+ int err;
+ u16 pci_cmd;
+
+ if (!(adapter->flags & FLAG_MSI_ENABLED))
+ return 0;
+
+ /* disable SERR in case the MSI write causes a master abort */
+ pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd);
+ if (pci_cmd & PCI_COMMAND_SERR)
+ pci_write_config_word(adapter->pdev, PCI_COMMAND,
+ pci_cmd & ~PCI_COMMAND_SERR);
+
+ err = e1000_test_msi_interrupt(adapter);
+
+ /* re-enable SERR */
+ if (pci_cmd & PCI_COMMAND_SERR) {
+ pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd);
+ pci_cmd |= PCI_COMMAND_SERR;
+ pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd);
+ }
+
+ return err;
+}
+
+/**
+ * e1000_open - Called when a network interface is made active
+ * @netdev: network interface device structure
+ *
+ * Returns 0 on success, negative value on failure
+ *
+ * The open entry point is called when a network interface is made
+ * active by the system (IFF_UP). At this point all resources needed
+ * for transmit and receive operations are allocated, the interrupt
+ * handler is registered with the OS, the watchdog timer is started,
+ * and the stack is notified that the interface is ready.
+ **/
+static int e1000_open(struct net_device *netdev)
+{
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+ struct e1000_hw *hw = &adapter->hw;
+ struct pci_dev *pdev = adapter->pdev;
+ int err;
+
+ /* disallow open during test */
+ if (test_bit(__E1000_TESTING, &adapter->state))
+ return -EBUSY;
+
+ pm_runtime_get_sync(&pdev->dev);
+
+ netif_carrier_off(netdev);
+
+ /* allocate transmit descriptors */
+ err = e1000e_setup_tx_resources(adapter);
+ if (err)
+ goto err_setup_tx;
+
+ /* allocate receive descriptors */
+ err = e1000e_setup_rx_resources(adapter);
+ if (err)
+ goto err_setup_rx;
+
+ /*
+ * If AMT is enabled, let the firmware know that the network
+ * interface is now open and reset the part to a known state.
+ */
+ if (adapter->flags & FLAG_HAS_AMT) {
+ e1000e_get_hw_control(adapter);
+ e1000e_reset(adapter);
+ }
+
+ e1000e_power_up_phy(adapter);
+
+ adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
+ if ((adapter->hw.mng_cookie.status &
+ E1000_MNG_DHCP_COOKIE_STATUS_VLAN))
+ e1000_update_mng_vlan(adapter);
+
+ /* DMA latency requirement to workaround early-receive/jumbo issue */
+ if ((adapter->flags & FLAG_HAS_ERT) ||
+ (adapter->hw.mac.type == e1000_pch2lan))
+ pm_qos_add_request(&adapter->netdev->pm_qos_req,
+ PM_QOS_CPU_DMA_LATENCY,
+ PM_QOS_DEFAULT_VALUE);
+
+ /*
+ * before we allocate an interrupt, we must be ready to handle it.
+ * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
+ * as soon as we call pci_request_irq, so we have to setup our
+ * clean_rx handler before we do so.
+ */
+ e1000_configure(adapter);
+
+ err = e1000_request_irq(adapter);
+ if (err)
+ goto err_req_irq;
+
+ /*
+ * Work around PCIe errata with MSI interrupts causing some chipsets to
+ * ignore e1000e MSI messages, which means we need to test our MSI
+ * interrupt now
+ */
+ if (adapter->int_mode != E1000E_INT_MODE_LEGACY) {
+ err = e1000_test_msi(adapter);
+ if (err) {
+ e_err("Interrupt allocation failed\n");
+ goto err_req_irq;
+ }
+ }
+
+ /* From here on the code is the same as e1000e_up() */
+ clear_bit(__E1000_DOWN, &adapter->state);
+
+ napi_enable(&adapter->napi);
+
+ e1000_irq_enable(adapter);
+
+ netif_start_queue(netdev);
+
+ adapter->idle_check = true;
+ pm_runtime_put(&pdev->dev);
+
+ /* fire a link status change interrupt to start the watchdog */
+ if (adapter->msix_entries)
+ ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER);
+ else
+ ew32(ICS, E1000_ICS_LSC);
+
+ return 0;
+
+err_req_irq:
+ e1000e_release_hw_control(adapter);
+ e1000_power_down_phy(adapter);
+ e1000e_free_rx_resources(adapter);
+err_setup_rx:
+ e1000e_free_tx_resources(adapter);
+err_setup_tx:
+ e1000e_reset(adapter);
+ pm_runtime_put_sync(&pdev->dev);
+
+ return err;
+}
+
+/**
+ * e1000_close - Disables a network interface
+ * @netdev: network interface device structure
+ *
+ * Returns 0, this is not allowed to fail
+ *
+ * The close entry point is called when an interface is de-activated
+ * by the OS. The hardware is still under the drivers control, but
+ * needs to be disabled. A global MAC reset is issued to stop the
+ * hardware, and all transmit and receive resources are freed.
+ **/
+static int e1000_close(struct net_device *netdev)
+{
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+ struct pci_dev *pdev = adapter->pdev;
+
+ WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
+
+ pm_runtime_get_sync(&pdev->dev);
+
+ if (!test_bit(__E1000_DOWN, &adapter->state)) {
+ e1000e_down(adapter);
+ e1000_free_irq(adapter);
+ }
+ e1000_power_down_phy(adapter);
+
+ e1000e_free_tx_resources(adapter);
+ e1000e_free_rx_resources(adapter);
+
+ /*
+ * kill manageability vlan ID if supported, but not if a vlan with
+ * the same ID is registered on the host OS (let 8021q kill it)
+ */
+ if (adapter->hw.mng_cookie.status &
+ E1000_MNG_DHCP_COOKIE_STATUS_VLAN)
+ e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
+
+ /*
+ * If AMT is enabled, let the firmware know that the network
+ * interface is now closed
+ */
+ if ((adapter->flags & FLAG_HAS_AMT) &&
+ !test_bit(__E1000_TESTING, &adapter->state))
+ e1000e_release_hw_control(adapter);
+
+ if ((adapter->flags & FLAG_HAS_ERT) ||
+ (adapter->hw.mac.type == e1000_pch2lan))
+ pm_qos_remove_request(&adapter->netdev->pm_qos_req);
+
+ pm_runtime_put_sync(&pdev->dev);
+
+ return 0;
+}
+/**
+ * e1000_set_mac - Change the Ethernet Address of the NIC
+ * @netdev: network interface device structure
+ * @p: pointer to an address structure
+ *
+ * Returns 0 on success, negative on failure
+ **/
+static int e1000_set_mac(struct net_device *netdev, void *p)
+{
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+ struct sockaddr *addr = p;
+
+ if (!is_valid_ether_addr(addr->sa_data))
+ return -EADDRNOTAVAIL;
+
+ memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
+ memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len);
+
+ e1000e_rar_set(&adapter->hw, adapter->hw.mac.addr, 0);
+
+ if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) {
+ /* activate the work around */
+ e1000e_set_laa_state_82571(&adapter->hw, 1);
+
+ /*
+ * Hold a copy of the LAA in RAR[14] This is done so that
+ * between the time RAR[0] gets clobbered and the time it
+ * gets fixed (in e1000_watchdog), the actual LAA is in one
+ * of the RARs and no incoming packets directed to this port
+ * are dropped. Eventually the LAA will be in RAR[0] and
+ * RAR[14]
+ */
+ e1000e_rar_set(&adapter->hw,
+ adapter->hw.mac.addr,
+ adapter->hw.mac.rar_entry_count - 1);
+ }
+
+ return 0;
+}
+
+/**
+ * e1000e_update_phy_task - work thread to update phy
+ * @work: pointer to our work struct
+ *
+ * this worker thread exists because we must acquire a
+ * semaphore to read the phy, which we could msleep while
+ * waiting for it, and we can't msleep in a timer.
+ **/
+static void e1000e_update_phy_task(struct work_struct *work)
+{
+ struct e1000_adapter *adapter = container_of(work,
+ struct e1000_adapter, update_phy_task);
+
+ if (test_bit(__E1000_DOWN, &adapter->state))
+ return;
+
+ e1000_get_phy_info(&adapter->hw);
+}
+
+/*
+ * Need to wait a few seconds after link up to get diagnostic information from
+ * the phy
+ */
+static void e1000_update_phy_info(unsigned long data)
+{
+ struct e1000_adapter *adapter = (struct e1000_adapter *) data;
+
+ if (test_bit(__E1000_DOWN, &adapter->state))
+ return;
+
+ schedule_work(&adapter->update_phy_task);
+}
+
+/**
+ * e1000e_update_phy_stats - Update the PHY statistics counters
+ * @adapter: board private structure
+ *
+ * Read/clear the upper 16-bit PHY registers and read/accumulate lower
+ **/
+static void e1000e_update_phy_stats(struct e1000_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ s32 ret_val;
+ u16 phy_data;
+
+ ret_val = hw->phy.ops.acquire(hw);
+ if (ret_val)
+ return;
+
+ /*
+ * A page set is expensive so check if already on desired page.
+ * If not, set to the page with the PHY status registers.
+ */
+ hw->phy.addr = 1;
+ ret_val = e1000e_read_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT,
+ &phy_data);
+ if (ret_val)
+ goto release;
+ if (phy_data != (HV_STATS_PAGE << IGP_PAGE_SHIFT)) {
+ ret_val = hw->phy.ops.set_page(hw,
+ HV_STATS_PAGE << IGP_PAGE_SHIFT);
+ if (ret_val)
+ goto release;
+ }
+
+ /* Single Collision Count */
+ hw->phy.ops.read_reg_page(hw, HV_SCC_UPPER, &phy_data);
+ ret_val = hw->phy.ops.read_reg_page(hw, HV_SCC_LOWER, &phy_data);
+ if (!ret_val)
+ adapter->stats.scc += phy_data;
+
+ /* Excessive Collision Count */
+ hw->phy.ops.read_reg_page(hw, HV_ECOL_UPPER, &phy_data);
+ ret_val = hw->phy.ops.read_reg_page(hw, HV_ECOL_LOWER, &phy_data);
+ if (!ret_val)
+ adapter->stats.ecol += phy_data;
+
+ /* Multiple Collision Count */
+ hw->phy.ops.read_reg_page(hw, HV_MCC_UPPER, &phy_data);
+ ret_val = hw->phy.ops.read_reg_page(hw, HV_MCC_LOWER, &phy_data);
+ if (!ret_val)
+ adapter->stats.mcc += phy_data;
+
+ /* Late Collision Count */
+ hw->phy.ops.read_reg_page(hw, HV_LATECOL_UPPER, &phy_data);
+ ret_val = hw->phy.ops.read_reg_page(hw, HV_LATECOL_LOWER, &phy_data);
+ if (!ret_val)
+ adapter->stats.latecol += phy_data;
+
+ /* Collision Count - also used for adaptive IFS */
+ hw->phy.ops.read_reg_page(hw, HV_COLC_UPPER, &phy_data);
+ ret_val = hw->phy.ops.read_reg_page(hw, HV_COLC_LOWER, &phy_data);
+ if (!ret_val)
+ hw->mac.collision_delta = phy_data;
+
+ /* Defer Count */
+ hw->phy.ops.read_reg_page(hw, HV_DC_UPPER, &phy_data);
+ ret_val = hw->phy.ops.read_reg_page(hw, HV_DC_LOWER, &phy_data);
+ if (!ret_val)
+ adapter->stats.dc += phy_data;
+
+ /* Transmit with no CRS */
+ hw->phy.ops.read_reg_page(hw, HV_TNCRS_UPPER, &phy_data);
+ ret_val = hw->phy.ops.read_reg_page(hw, HV_TNCRS_LOWER, &phy_data);
+ if (!ret_val)
+ adapter->stats.tncrs += phy_data;
+
+release:
+ hw->phy.ops.release(hw);
+}
+
+/**
+ * e1000e_update_stats - Update the board statistics counters
+ * @adapter: board private structure
+ **/
+static void e1000e_update_stats(struct e1000_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ struct e1000_hw *hw = &adapter->hw;
+ struct pci_dev *pdev = adapter->pdev;
+
+ /*
+ * Prevent stats update while adapter is being reset, or if the pci
+ * connection is down.
+ */
+ if (adapter->link_speed == 0)
+ return;
+ if (pci_channel_offline(pdev))
+ return;
+
+ adapter->stats.crcerrs += er32(CRCERRS);
+ adapter->stats.gprc += er32(GPRC);
+ adapter->stats.gorc += er32(GORCL);
+ er32(GORCH); /* Clear gorc */
+ adapter->stats.bprc += er32(BPRC);
+ adapter->stats.mprc += er32(MPRC);
+ adapter->stats.roc += er32(ROC);
+
+ adapter->stats.mpc += er32(MPC);
+
+ /* Half-duplex statistics */
+ if (adapter->link_duplex == HALF_DUPLEX) {
+ if (adapter->flags2 & FLAG2_HAS_PHY_STATS) {
+ e1000e_update_phy_stats(adapter);
+ } else {
+ adapter->stats.scc += er32(SCC);
+ adapter->stats.ecol += er32(ECOL);
+ adapter->stats.mcc += er32(MCC);
+ adapter->stats.latecol += er32(LATECOL);
+ adapter->stats.dc += er32(DC);
+
+ hw->mac.collision_delta = er32(COLC);
+
+ if ((hw->mac.type != e1000_82574) &&
+ (hw->mac.type != e1000_82583))
+ adapter->stats.tncrs += er32(TNCRS);
+ }
+ adapter->stats.colc += hw->mac.collision_delta;
+ }
+
+ adapter->stats.xonrxc += er32(XONRXC);
+ adapter->stats.xontxc += er32(XONTXC);
+ adapter->stats.xoffrxc += er32(XOFFRXC);
+ adapter->stats.xofftxc += er32(XOFFTXC);
+ adapter->stats.gptc += er32(GPTC);
+ adapter->stats.gotc += er32(GOTCL);
+ er32(GOTCH); /* Clear gotc */
+ adapter->stats.rnbc += er32(RNBC);
+ adapter->stats.ruc += er32(RUC);
+
+ adapter->stats.mptc += er32(MPTC);
+ adapter->stats.bptc += er32(BPTC);
+
+ /* used for adaptive IFS */
+
+ hw->mac.tx_packet_delta = er32(TPT);
+ adapter->stats.tpt += hw->mac.tx_packet_delta;
+
+ adapter->stats.algnerrc += er32(ALGNERRC);
+ adapter->stats.rxerrc += er32(RXERRC);
+ adapter->stats.cexterr += er32(CEXTERR);
+ adapter->stats.tsctc += er32(TSCTC);
+ adapter->stats.tsctfc += er32(TSCTFC);
+
+ /* Fill out the OS statistics structure */
+ netdev->stats.multicast = adapter->stats.mprc;
+ netdev->stats.collisions = adapter->stats.colc;
+
+ /* Rx Errors */
+
+ /*
+ * RLEC on some newer hardware can be incorrect so build
+ * our own version based on RUC and ROC
+ */
+ netdev->stats.rx_errors = adapter->stats.rxerrc +
+ adapter->stats.crcerrs + adapter->stats.algnerrc +
+ adapter->stats.ruc + adapter->stats.roc +
+ adapter->stats.cexterr;
+ netdev->stats.rx_length_errors = adapter->stats.ruc +
+ adapter->stats.roc;
+ netdev->stats.rx_crc_errors = adapter->stats.crcerrs;
+ netdev->stats.rx_frame_errors = adapter->stats.algnerrc;
+ netdev->stats.rx_missed_errors = adapter->stats.mpc;
+
+ /* Tx Errors */
+ netdev->stats.tx_errors = adapter->stats.ecol +
+ adapter->stats.latecol;
+ netdev->stats.tx_aborted_errors = adapter->stats.ecol;
+ netdev->stats.tx_window_errors = adapter->stats.latecol;
+ netdev->stats.tx_carrier_errors = adapter->stats.tncrs;
+
+ /* Tx Dropped needs to be maintained elsewhere */
+
+ /* Management Stats */
+ adapter->stats.mgptc += er32(MGTPTC);
+ adapter->stats.mgprc += er32(MGTPRC);
+ adapter->stats.mgpdc += er32(MGTPDC);
+}
+
+/**
+ * e1000_phy_read_status - Update the PHY register status snapshot
+ * @adapter: board private structure
+ **/
+static void e1000_phy_read_status(struct e1000_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ struct e1000_phy_regs *phy = &adapter->phy_regs;
+
+ if ((er32(STATUS) & E1000_STATUS_LU) &&
+ (adapter->hw.phy.media_type == e1000_media_type_copper)) {
+ int ret_val;
+
+ ret_val = e1e_rphy(hw, PHY_CONTROL, &phy->bmcr);
+ ret_val |= e1e_rphy(hw, PHY_STATUS, &phy->bmsr);
+ ret_val |= e1e_rphy(hw, PHY_AUTONEG_ADV, &phy->advertise);
+ ret_val |= e1e_rphy(hw, PHY_LP_ABILITY, &phy->lpa);
+ ret_val |= e1e_rphy(hw, PHY_AUTONEG_EXP, &phy->expansion);
+ ret_val |= e1e_rphy(hw, PHY_1000T_CTRL, &phy->ctrl1000);
+ ret_val |= e1e_rphy(hw, PHY_1000T_STATUS, &phy->stat1000);
+ ret_val |= e1e_rphy(hw, PHY_EXT_STATUS, &phy->estatus);
+ if (ret_val)
+ e_warn("Error reading PHY register\n");
+ } else {
+ /*
+ * Do not read PHY registers if link is not up
+ * Set values to typical power-on defaults
+ */
+ phy->bmcr = (BMCR_SPEED1000 | BMCR_ANENABLE | BMCR_FULLDPLX);
+ phy->bmsr = (BMSR_100FULL | BMSR_100HALF | BMSR_10FULL |
+ BMSR_10HALF | BMSR_ESTATEN | BMSR_ANEGCAPABLE |
+ BMSR_ERCAP);
+ phy->advertise = (ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP |
+ ADVERTISE_ALL | ADVERTISE_CSMA);
+ phy->lpa = 0;
+ phy->expansion = EXPANSION_ENABLENPAGE;
+ phy->ctrl1000 = ADVERTISE_1000FULL;
+ phy->stat1000 = 0;
+ phy->estatus = (ESTATUS_1000_TFULL | ESTATUS_1000_THALF);
+ }
+}
+
+static void e1000_print_link_info(struct e1000_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ u32 ctrl = er32(CTRL);
+
+ /* Link status message must follow this format for user tools */
+ printk(KERN_INFO "e1000e: %s NIC Link is Up %d Mbps %s, "
+ "Flow Control: %s\n",
+ adapter->netdev->name,
+ adapter->link_speed,
+ (adapter->link_duplex == FULL_DUPLEX) ?
+ "Full Duplex" : "Half Duplex",
+ ((ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE)) ?
+ "Rx/Tx" :
+ ((ctrl & E1000_CTRL_RFCE) ? "Rx" :
+ ((ctrl & E1000_CTRL_TFCE) ? "Tx" : "None")));
+}
+
+static bool e1000e_has_link(struct e1000_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ bool link_active = 0;
+ s32 ret_val = 0;
+
+ /*
+ * get_link_status is set on LSC (link status) interrupt or
+ * Rx sequence error interrupt. get_link_status will stay
+ * false until the check_for_link establishes link
+ * for copper adapters ONLY
+ */
+ switch (hw->phy.media_type) {
+ case e1000_media_type_copper:
+ if (hw->mac.get_link_status) {
+ ret_val = hw->mac.ops.check_for_link(hw);
+ link_active = !hw->mac.get_link_status;
+ } else {
+ link_active = 1;
+ }
+ break;
+ case e1000_media_type_fiber:
+ ret_val = hw->mac.ops.check_for_link(hw);
+ link_active = !!(er32(STATUS) & E1000_STATUS_LU);
+ break;
+ case e1000_media_type_internal_serdes:
+ ret_val = hw->mac.ops.check_for_link(hw);
+ link_active = adapter->hw.mac.serdes_has_link;
+ break;
+ default:
+ case e1000_media_type_unknown:
+ break;
+ }
+
+ if ((ret_val == E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) &&
+ (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) {
+ /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
+ e_info("Gigabit has been disabled, downgrading speed\n");
+ }
+
+ return link_active;
+}
+
+static void e1000e_enable_receives(struct e1000_adapter *adapter)
+{
+ /* make sure the receive unit is started */
+ if ((adapter->flags & FLAG_RX_NEEDS_RESTART) &&
+ (adapter->flags & FLAG_RX_RESTART_NOW)) {
+ struct e1000_hw *hw = &adapter->hw;
+ u32 rctl = er32(RCTL);
+ ew32(RCTL, rctl | E1000_RCTL_EN);
+ adapter->flags &= ~FLAG_RX_RESTART_NOW;
+ }
+}
+
+static void e1000e_check_82574_phy_workaround(struct e1000_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+
+ /*
+ * With 82574 controllers, PHY needs to be checked periodically
+ * for hung state and reset, if two calls return true
+ */
+ if (e1000_check_phy_82574(hw))
+ adapter->phy_hang_count++;
+ else
+ adapter->phy_hang_count = 0;
+
+ if (adapter->phy_hang_count > 1) {
+ adapter->phy_hang_count = 0;
+ schedule_work(&adapter->reset_task);
+ }
+}
+
+/**
+ * e1000_watchdog - Timer Call-back
+ * @data: pointer to adapter cast into an unsigned long
+ **/
+static void e1000_watchdog(unsigned long data)
+{
+ struct e1000_adapter *adapter = (struct e1000_adapter *) data;
+
+ /* Do the rest outside of interrupt context */
+ schedule_work(&adapter->watchdog_task);
+
+ /* TODO: make this use queue_delayed_work() */
+}
+
+static void e1000_watchdog_task(struct work_struct *work)
+{
+ struct e1000_adapter *adapter = container_of(work,
+ struct e1000_adapter, watchdog_task);
+ struct net_device *netdev = adapter->netdev;
+ struct e1000_mac_info *mac = &adapter->hw.mac;
+ struct e1000_phy_info *phy = &adapter->hw.phy;
+ struct e1000_ring *tx_ring = adapter->tx_ring;
+ struct e1000_hw *hw = &adapter->hw;
+ u32 link, tctl;
+
+ if (test_bit(__E1000_DOWN, &adapter->state))
+ return;
+
+ link = e1000e_has_link(adapter);
+ if ((netif_carrier_ok(netdev)) && link) {
+ /* Cancel scheduled suspend requests. */
+ pm_runtime_resume(netdev->dev.parent);
+
+ e1000e_enable_receives(adapter);
+ goto link_up;
+ }
+
+ if ((e1000e_enable_tx_pkt_filtering(hw)) &&
+ (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id))
+ e1000_update_mng_vlan(adapter);
+
+ if (link) {
+ if (!netif_carrier_ok(netdev)) {
+ bool txb2b = 1;
+
+ /* Cancel scheduled suspend requests. */
+ pm_runtime_resume(netdev->dev.parent);
+
+ /* update snapshot of PHY registers on LSC */
+ e1000_phy_read_status(adapter);
+ mac->ops.get_link_up_info(&adapter->hw,
+ &adapter->link_speed,
+ &adapter->link_duplex);
+ e1000_print_link_info(adapter);
+ /*
+ * On supported PHYs, check for duplex mismatch only
+ * if link has autonegotiated at 10/100 half
+ */
+ if ((hw->phy.type == e1000_phy_igp_3 ||
+ hw->phy.type == e1000_phy_bm) &&
+ (hw->mac.autoneg == true) &&
+ (adapter->link_speed == SPEED_10 ||
+ adapter->link_speed == SPEED_100) &&
+ (adapter->link_duplex == HALF_DUPLEX)) {
+ u16 autoneg_exp;
+
+ e1e_rphy(hw, PHY_AUTONEG_EXP, &autoneg_exp);
+
+ if (!(autoneg_exp & NWAY_ER_LP_NWAY_CAPS))
+ e_info("Autonegotiated half duplex but"
+ " link partner cannot autoneg. "
+ " Try forcing full duplex if "
+ "link gets many collisions.\n");
+ }
+
+ /* adjust timeout factor according to speed/duplex */
+ adapter->tx_timeout_factor = 1;
+ switch (adapter->link_speed) {
+ case SPEED_10:
+ txb2b = 0;
+ adapter->tx_timeout_factor = 16;
+ break;
+ case SPEED_100:
+ txb2b = 0;
+ adapter->tx_timeout_factor = 10;
+ break;
+ }
+
+ /*
+ * workaround: re-program speed mode bit after
+ * link-up event
+ */
+ if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) &&
+ !txb2b) {
+ u32 tarc0;
+ tarc0 = er32(TARC(0));
+ tarc0 &= ~SPEED_MODE_BIT;
+ ew32(TARC(0), tarc0);
+ }
+
+ /*
+ * disable TSO for pcie and 10/100 speeds, to avoid
+ * some hardware issues
+ */
+ if (!(adapter->flags & FLAG_TSO_FORCE)) {
+ switch (adapter->link_speed) {
+ case SPEED_10:
+ case SPEED_100:
+ e_info("10/100 speed: disabling TSO\n");
+ netdev->features &= ~NETIF_F_TSO;
+ netdev->features &= ~NETIF_F_TSO6;
+ break;
+ case SPEED_1000:
+ netdev->features |= NETIF_F_TSO;
+ netdev->features |= NETIF_F_TSO6;
+ break;
+ default:
+ /* oops */
+ break;
+ }
+ }
+
+ /*
+ * enable transmits in the hardware, need to do this
+ * after setting TARC(0)
+ */
+ tctl = er32(TCTL);
+ tctl |= E1000_TCTL_EN;
+ ew32(TCTL, tctl);
+
+ /*
+ * Perform any post-link-up configuration before
+ * reporting link up.
+ */
+ if (phy->ops.cfg_on_link_up)
+ phy->ops.cfg_on_link_up(hw);
+
+ netif_carrier_on(netdev);
+
+ if (!test_bit(__E1000_DOWN, &adapter->state))
+ mod_timer(&adapter->phy_info_timer,
+ round_jiffies(jiffies + 2 * HZ));
+ }
+ } else {
+ if (netif_carrier_ok(netdev)) {
+ adapter->link_speed = 0;
+ adapter->link_duplex = 0;
+ /* Link status message must follow this format */
+ printk(KERN_INFO "e1000e: %s NIC Link is Down\n",
+ adapter->netdev->name);
+ netif_carrier_off(netdev);
+ if (!test_bit(__E1000_DOWN, &adapter->state))
+ mod_timer(&adapter->phy_info_timer,
+ round_jiffies(jiffies + 2 * HZ));
+
+ if (adapter->flags & FLAG_RX_NEEDS_RESTART)
+ schedule_work(&adapter->reset_task);
+ else
+ pm_schedule_suspend(netdev->dev.parent,
+ LINK_TIMEOUT);
+ }
+ }
+
+link_up:
+ spin_lock(&adapter->stats64_lock);
+ e1000e_update_stats(adapter);
+
+ mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
+ adapter->tpt_old = adapter->stats.tpt;
+ mac->collision_delta = adapter->stats.colc - adapter->colc_old;
+ adapter->colc_old = adapter->stats.colc;
+
+ adapter->gorc = adapter->stats.gorc - adapter->gorc_old;
+ adapter->gorc_old = adapter->stats.gorc;
+ adapter->gotc = adapter->stats.gotc - adapter->gotc_old;
+ adapter->gotc_old = adapter->stats.gotc;
+ spin_unlock(&adapter->stats64_lock);
+
+ e1000e_update_adaptive(&adapter->hw);
+
+ if (!netif_carrier_ok(netdev) &&
+ (e1000_desc_unused(tx_ring) + 1 < tx_ring->count)) {
+ /*
+ * We've lost link, so the controller stops DMA,
+ * but we've got queued Tx work that's never going
+ * to get done, so reset controller to flush Tx.
+ * (Do the reset outside of interrupt context).
+ */
+ schedule_work(&adapter->reset_task);
+ /* return immediately since reset is imminent */
+ return;
+ }
+
+ /* Simple mode for Interrupt Throttle Rate (ITR) */
+ if (adapter->itr_setting == 4) {
+ /*
+ * Symmetric Tx/Rx gets a reduced ITR=2000;
+ * Total asymmetrical Tx or Rx gets ITR=8000;
+ * everyone else is between 2000-8000.
+ */
+ u32 goc = (adapter->gotc + adapter->gorc) / 10000;
+ u32 dif = (adapter->gotc > adapter->gorc ?
+ adapter->gotc - adapter->gorc :
+ adapter->gorc - adapter->gotc) / 10000;
+ u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000;
+
+ ew32(ITR, 1000000000 / (itr * 256));
+ }
+
+ /* Cause software interrupt to ensure Rx ring is cleaned */
+ if (adapter->msix_entries)
+ ew32(ICS, adapter->rx_ring->ims_val);
+ else
+ ew32(ICS, E1000_ICS_RXDMT0);
+
+ /* flush pending descriptors to memory before detecting Tx hang */
+ e1000e_flush_descriptors(adapter);
+
+ /* Force detection of hung controller every watchdog period */
+ adapter->detect_tx_hung = 1;
+
+ /*
+ * With 82571 controllers, LAA may be overwritten due to controller
+ * reset from the other port. Set the appropriate LAA in RAR[0]
+ */
+ if (e1000e_get_laa_state_82571(hw))
+ e1000e_rar_set(hw, adapter->hw.mac.addr, 0);
+
+ if (adapter->flags2 & FLAG2_CHECK_PHY_HANG)
+ e1000e_check_82574_phy_workaround(adapter);
+
+ /* Reset the timer */
+ if (!test_bit(__E1000_DOWN, &adapter->state))
+ mod_timer(&adapter->watchdog_timer,
+ round_jiffies(jiffies + 2 * HZ));
+}
+
+#define E1000_TX_FLAGS_CSUM 0x00000001
+#define E1000_TX_FLAGS_VLAN 0x00000002
+#define E1000_TX_FLAGS_TSO 0x00000004
+#define E1000_TX_FLAGS_IPV4 0x00000008
+#define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
+#define E1000_TX_FLAGS_VLAN_SHIFT 16
+
+static int e1000_tso(struct e1000_adapter *adapter,
+ struct sk_buff *skb)
+{
+ struct e1000_ring *tx_ring = adapter->tx_ring;
+ struct e1000_context_desc *context_desc;
+ struct e1000_buffer *buffer_info;
+ unsigned int i;
+ u32 cmd_length = 0;
+ u16 ipcse = 0, tucse, mss;
+ u8 ipcss, ipcso, tucss, tucso, hdr_len;
+
+ if (!skb_is_gso(skb))
+ return 0;
+
+ if (skb_header_cloned(skb)) {
+ int err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
+
+ if (err)
+ return err;
+ }
+
+ hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
+ mss = skb_shinfo(skb)->gso_size;
+ if (skb->protocol == htons(ETH_P_IP)) {
+ struct iphdr *iph = ip_hdr(skb);
+ iph->tot_len = 0;
+ iph->check = 0;
+ tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
+ 0, IPPROTO_TCP, 0);
+ cmd_length = E1000_TXD_CMD_IP;
+ ipcse = skb_transport_offset(skb) - 1;
+ } else if (skb_is_gso_v6(skb)) {
+ ipv6_hdr(skb)->payload_len = 0;
+ tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
+ &ipv6_hdr(skb)->daddr,
+ 0, IPPROTO_TCP, 0);
+ ipcse = 0;
+ }
+ ipcss = skb_network_offset(skb);
+ ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data;
+ tucss = skb_transport_offset(skb);
+ tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data;
+ tucse = 0;
+
+ cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
+ E1000_TXD_CMD_TCP | (skb->len - (hdr_len)));
+
+ i = tx_ring->next_to_use;
+ context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
+ buffer_info = &tx_ring->buffer_info[i];
+
+ context_desc->lower_setup.ip_fields.ipcss = ipcss;
+ context_desc->lower_setup.ip_fields.ipcso = ipcso;
+ context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse);
+ context_desc->upper_setup.tcp_fields.tucss = tucss;
+ context_desc->upper_setup.tcp_fields.tucso = tucso;
+ context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse);
+ context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss);
+ context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
+ context_desc->cmd_and_length = cpu_to_le32(cmd_length);
+
+ buffer_info->time_stamp = jiffies;
+ buffer_info->next_to_watch = i;
+
+ i++;
+ if (i == tx_ring->count)
+ i = 0;
+ tx_ring->next_to_use = i;
+
+ return 1;
+}
+
+static bool e1000_tx_csum(struct e1000_adapter *adapter, struct sk_buff *skb)
+{
+ struct e1000_ring *tx_ring = adapter->tx_ring;
+ struct e1000_context_desc *context_desc;
+ struct e1000_buffer *buffer_info;
+ unsigned int i;
+ u8 css;
+ u32 cmd_len = E1000_TXD_CMD_DEXT;
+ __be16 protocol;
+
+ if (skb->ip_summed != CHECKSUM_PARTIAL)
+ return 0;
+
+ if (skb->protocol == cpu_to_be16(ETH_P_8021Q))
+ protocol = vlan_eth_hdr(skb)->h_vlan_encapsulated_proto;
+ else
+ protocol = skb->protocol;
+
+ switch (protocol) {
+ case cpu_to_be16(ETH_P_IP):
+ if (ip_hdr(skb)->protocol == IPPROTO_TCP)
+ cmd_len |= E1000_TXD_CMD_TCP;
+ break;
+ case cpu_to_be16(ETH_P_IPV6):
+ /* XXX not handling all IPV6 headers */
+ if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
+ cmd_len |= E1000_TXD_CMD_TCP;
+ break;
+ default:
+ if (unlikely(net_ratelimit()))
+ e_warn("checksum_partial proto=%x!\n",
+ be16_to_cpu(protocol));
+ break;
+ }
+
+ css = skb_checksum_start_offset(skb);
+
+ i = tx_ring->next_to_use;
+ buffer_info = &tx_ring->buffer_info[i];
+ context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
+
+ context_desc->lower_setup.ip_config = 0;
+ context_desc->upper_setup.tcp_fields.tucss = css;
+ context_desc->upper_setup.tcp_fields.tucso =
+ css + skb->csum_offset;
+ context_desc->upper_setup.tcp_fields.tucse = 0;
+ context_desc->tcp_seg_setup.data = 0;
+ context_desc->cmd_and_length = cpu_to_le32(cmd_len);
+
+ buffer_info->time_stamp = jiffies;
+ buffer_info->next_to_watch = i;
+
+ i++;
+ if (i == tx_ring->count)
+ i = 0;
+ tx_ring->next_to_use = i;
+
+ return 1;
+}
+
+#define E1000_MAX_PER_TXD 8192
+#define E1000_MAX_TXD_PWR 12
+
+static int e1000_tx_map(struct e1000_adapter *adapter,
+ struct sk_buff *skb, unsigned int first,
+ unsigned int max_per_txd, unsigned int nr_frags,
+ unsigned int mss)
+{
+ struct e1000_ring *tx_ring = adapter->tx_ring;
+ struct pci_dev *pdev = adapter->pdev;
+ struct e1000_buffer *buffer_info;
+ unsigned int len = skb_headlen(skb);
+ unsigned int offset = 0, size, count = 0, i;
+ unsigned int f, bytecount, segs;
+
+ i = tx_ring->next_to_use;
+
+ while (len) {
+ buffer_info = &tx_ring->buffer_info[i];
+ size = min(len, max_per_txd);
+
+ buffer_info->length = size;
+ buffer_info->time_stamp = jiffies;
+ buffer_info->next_to_watch = i;
+ buffer_info->dma = dma_map_single(&pdev->dev,
+ skb->data + offset,
+ size, DMA_TO_DEVICE);
+ buffer_info->mapped_as_page = false;
+ if (dma_mapping_error(&pdev->dev, buffer_info->dma))
+ goto dma_error;
+
+ len -= size;
+ offset += size;
+ count++;
+
+ if (len) {
+ i++;
+ if (i == tx_ring->count)
+ i = 0;
+ }
+ }
+
+ for (f = 0; f < nr_frags; f++) {
+ struct skb_frag_struct *frag;
+
+ frag = &skb_shinfo(skb)->frags[f];
+ len = frag->size;
+ offset = frag->page_offset;
+
+ while (len) {
+ i++;
+ if (i == tx_ring->count)
+ i = 0;
+
+ buffer_info = &tx_ring->buffer_info[i];
+ size = min(len, max_per_txd);
+
+ buffer_info->length = size;
+ buffer_info->time_stamp = jiffies;
+ buffer_info->next_to_watch = i;
+ buffer_info->dma = dma_map_page(&pdev->dev, frag->page,
+ offset, size,
+ DMA_TO_DEVICE);
+ buffer_info->mapped_as_page = true;
+ if (dma_mapping_error(&pdev->dev, buffer_info->dma))
+ goto dma_error;
+
+ len -= size;
+ offset += size;
+ count++;
+ }
+ }
+
+ segs = skb_shinfo(skb)->gso_segs ? : 1;
+ /* multiply data chunks by size of headers */
+ bytecount = ((segs - 1) * skb_headlen(skb)) + skb->len;
+
+ tx_ring->buffer_info[i].skb = skb;
+ tx_ring->buffer_info[i].segs = segs;
+ tx_ring->buffer_info[i].bytecount = bytecount;
+ tx_ring->buffer_info[first].next_to_watch = i;
+
+ return count;
+
+dma_error:
+ dev_err(&pdev->dev, "Tx DMA map failed\n");
+ buffer_info->dma = 0;
+ if (count)
+ count--;
+
+ while (count--) {
+ if (i == 0)
+ i += tx_ring->count;
+ i--;
+ buffer_info = &tx_ring->buffer_info[i];
+ e1000_put_txbuf(adapter, buffer_info);
+ }
+
+ return 0;
+}
+
+static void e1000_tx_queue(struct e1000_adapter *adapter,
+ int tx_flags, int count)
+{
+ struct e1000_ring *tx_ring = adapter->tx_ring;
+ struct e1000_tx_desc *tx_desc = NULL;
+ struct e1000_buffer *buffer_info;
+ u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
+ unsigned int i;
+
+ if (tx_flags & E1000_TX_FLAGS_TSO) {
+ txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
+ E1000_TXD_CMD_TSE;
+ txd_upper |= E1000_TXD_POPTS_TXSM << 8;
+
+ if (tx_flags & E1000_TX_FLAGS_IPV4)
+ txd_upper |= E1000_TXD_POPTS_IXSM << 8;
+ }
+
+ if (tx_flags & E1000_TX_FLAGS_CSUM) {
+ txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
+ txd_upper |= E1000_TXD_POPTS_TXSM << 8;
+ }
+
+ if (tx_flags & E1000_TX_FLAGS_VLAN) {
+ txd_lower |= E1000_TXD_CMD_VLE;
+ txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
+ }
+
+ i = tx_ring->next_to_use;
+
+ do {
+ buffer_info = &tx_ring->buffer_info[i];
+ tx_desc = E1000_TX_DESC(*tx_ring, i);
+ tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
+ tx_desc->lower.data =
+ cpu_to_le32(txd_lower | buffer_info->length);
+ tx_desc->upper.data = cpu_to_le32(txd_upper);
+
+ i++;
+ if (i == tx_ring->count)
+ i = 0;
+ } while (--count > 0);
+
+ tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
+
+ /*
+ * Force memory writes to complete before letting h/w
+ * know there are new descriptors to fetch. (Only
+ * applicable for weak-ordered memory model archs,
+ * such as IA-64).
+ */
+ wmb();
+
+ tx_ring->next_to_use = i;
++
++ if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
++ e1000e_update_tdt_wa(adapter, i);
++ else
++ writel(i, adapter->hw.hw_addr + tx_ring->tail);
++
+ /*
+ * we need this if more than one processor can write to our tail
+ * at a time, it synchronizes IO on IA64/Altix systems
+ */
+ mmiowb();
+}
+
+#define MINIMUM_DHCP_PACKET_SIZE 282
+static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter,
+ struct sk_buff *skb)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ u16 length, offset;
+
+ if (vlan_tx_tag_present(skb)) {
+ if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) &&
+ (adapter->hw.mng_cookie.status &
+ E1000_MNG_DHCP_COOKIE_STATUS_VLAN)))
+ return 0;
+ }
+
+ if (skb->len <= MINIMUM_DHCP_PACKET_SIZE)
+ return 0;
+
+ if (((struct ethhdr *) skb->data)->h_proto != htons(ETH_P_IP))
+ return 0;
+
+ {
+ const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data+14);
+ struct udphdr *udp;
+
+ if (ip->protocol != IPPROTO_UDP)
+ return 0;
+
+ udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2));
+ if (ntohs(udp->dest) != 67)
+ return 0;
+
+ offset = (u8 *)udp + 8 - skb->data;
+ length = skb->len - offset;
+ return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length);
+ }
+
+ return 0;
+}
+
+static int __e1000_maybe_stop_tx(struct net_device *netdev, int size)
+{
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+
+ netif_stop_queue(netdev);
+ /*
+ * Herbert's original patch had:
+ * smp_mb__after_netif_stop_queue();
+ * but since that doesn't exist yet, just open code it.
+ */
+ smp_mb();
+
+ /*
+ * We need to check again in a case another CPU has just
+ * made room available.
+ */
+ if (e1000_desc_unused(adapter->tx_ring) < size)
+ return -EBUSY;
+
+ /* A reprieve! */
+ netif_start_queue(netdev);
+ ++adapter->restart_queue;
+ return 0;
+}
+
+static int e1000_maybe_stop_tx(struct net_device *netdev, int size)
+{
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+
+ if (e1000_desc_unused(adapter->tx_ring) >= size)
+ return 0;
+ return __e1000_maybe_stop_tx(netdev, size);
+}
+
+#define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
+static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
+ struct net_device *netdev)
+{
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+ struct e1000_ring *tx_ring = adapter->tx_ring;
+ unsigned int first;
+ unsigned int max_per_txd = E1000_MAX_PER_TXD;
+ unsigned int max_txd_pwr = E1000_MAX_TXD_PWR;
+ unsigned int tx_flags = 0;
+ unsigned int len = skb_headlen(skb);
+ unsigned int nr_frags;
+ unsigned int mss;
+ int count = 0;
+ int tso;
+ unsigned int f;
+
+ if (test_bit(__E1000_DOWN, &adapter->state)) {
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+ }
+
+ if (skb->len <= 0) {
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+ }
+
+ mss = skb_shinfo(skb)->gso_size;
+ /*
+ * The controller does a simple calculation to
+ * make sure there is enough room in the FIFO before
+ * initiating the DMA for each buffer. The calc is:
+ * 4 = ceil(buffer len/mss). To make sure we don't
+ * overrun the FIFO, adjust the max buffer len if mss
+ * drops.
+ */
+ if (mss) {
+ u8 hdr_len;
+ max_per_txd = min(mss << 2, max_per_txd);
+ max_txd_pwr = fls(max_per_txd) - 1;
+
+ /*
+ * TSO Workaround for 82571/2/3 Controllers -- if skb->data
+ * points to just header, pull a few bytes of payload from
+ * frags into skb->data
+ */
+ hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
+ /*
+ * we do this workaround for ES2LAN, but it is un-necessary,
+ * avoiding it could save a lot of cycles
+ */
+ if (skb->data_len && (hdr_len == len)) {
+ unsigned int pull_size;
+
+ pull_size = min((unsigned int)4, skb->data_len);
+ if (!__pskb_pull_tail(skb, pull_size)) {
+ e_err("__pskb_pull_tail failed.\n");
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+ }
+ len = skb_headlen(skb);
+ }
+ }
+
+ /* reserve a descriptor for the offload context */
+ if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL))
+ count++;
+ count++;
+
+ count += TXD_USE_COUNT(len, max_txd_pwr);
+
+ nr_frags = skb_shinfo(skb)->nr_frags;
+ for (f = 0; f < nr_frags; f++)
+ count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size,
+ max_txd_pwr);
+
+ if (adapter->hw.mac.tx_pkt_filtering)
+ e1000_transfer_dhcp_info(adapter, skb);
+
+ /*
+ * need: count + 2 desc gap to keep tail from touching
+ * head, otherwise try next time
+ */
+ if (e1000_maybe_stop_tx(netdev, count + 2))
+ return NETDEV_TX_BUSY;
+
+ if (vlan_tx_tag_present(skb)) {
+ tx_flags |= E1000_TX_FLAGS_VLAN;
+ tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
+ }
+
+ first = tx_ring->next_to_use;
+
+ tso = e1000_tso(adapter, skb);
+ if (tso < 0) {
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+ }
+
+ if (tso)
+ tx_flags |= E1000_TX_FLAGS_TSO;
+ else if (e1000_tx_csum(adapter, skb))
+ tx_flags |= E1000_TX_FLAGS_CSUM;
+
+ /*
+ * Old method was to assume IPv4 packet by default if TSO was enabled.
+ * 82571 hardware supports TSO capabilities for IPv6 as well...
+ * no longer assume, we must.
+ */
+ if (skb->protocol == htons(ETH_P_IP))
+ tx_flags |= E1000_TX_FLAGS_IPV4;
+
+ /* if count is 0 then mapping error has occurred */
+ count = e1000_tx_map(adapter, skb, first, max_per_txd, nr_frags, mss);
+ if (count) {
+ e1000_tx_queue(adapter, tx_flags, count);
+ /* Make sure there is space in the ring for the next send. */
+ e1000_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 2);
+
+ } else {
+ dev_kfree_skb_any(skb);
+ tx_ring->buffer_info[first].time_stamp = 0;
+ tx_ring->next_to_use = first;
+ }
+
+ return NETDEV_TX_OK;
+}
+
+/**
+ * e1000_tx_timeout - Respond to a Tx Hang
+ * @netdev: network interface device structure
+ **/
+static void e1000_tx_timeout(struct net_device *netdev)
+{
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+
+ /* Do the reset outside of interrupt context */
+ adapter->tx_timeout_count++;
+ schedule_work(&adapter->reset_task);
+}
+
+static void e1000_reset_task(struct work_struct *work)
+{
+ struct e1000_adapter *adapter;
+ adapter = container_of(work, struct e1000_adapter, reset_task);
+
+ /* don't run the task if already down */
+ if (test_bit(__E1000_DOWN, &adapter->state))
+ return;
+
+ if (!((adapter->flags & FLAG_RX_NEEDS_RESTART) &&
+ (adapter->flags & FLAG_RX_RESTART_NOW))) {
+ e1000e_dump(adapter);
+ e_err("Reset adapter\n");
+ }
+ e1000e_reinit_locked(adapter);
+}
+
+/**
+ * e1000_get_stats64 - Get System Network Statistics
+ * @netdev: network interface device structure
+ * @stats: rtnl_link_stats64 pointer
+ *
+ * Returns the address of the device statistics structure.
+ **/
+struct rtnl_link_stats64 *e1000e_get_stats64(struct net_device *netdev,
+ struct rtnl_link_stats64 *stats)
+{
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+
+ memset(stats, 0, sizeof(struct rtnl_link_stats64));
+ spin_lock(&adapter->stats64_lock);
+ e1000e_update_stats(adapter);
+ /* Fill out the OS statistics structure */
+ stats->rx_bytes = adapter->stats.gorc;
+ stats->rx_packets = adapter->stats.gprc;
+ stats->tx_bytes = adapter->stats.gotc;
+ stats->tx_packets = adapter->stats.gptc;
+ stats->multicast = adapter->stats.mprc;
+ stats->collisions = adapter->stats.colc;
+
+ /* Rx Errors */
+
+ /*
+ * RLEC on some newer hardware can be incorrect so build
+ * our own version based on RUC and ROC
+ */
+ stats->rx_errors = adapter->stats.rxerrc +
+ adapter->stats.crcerrs + adapter->stats.algnerrc +
+ adapter->stats.ruc + adapter->stats.roc +
+ adapter->stats.cexterr;
+ stats->rx_length_errors = adapter->stats.ruc +
+ adapter->stats.roc;
+ stats->rx_crc_errors = adapter->stats.crcerrs;
+ stats->rx_frame_errors = adapter->stats.algnerrc;
+ stats->rx_missed_errors = adapter->stats.mpc;
+
+ /* Tx Errors */
+ stats->tx_errors = adapter->stats.ecol +
+ adapter->stats.latecol;
+ stats->tx_aborted_errors = adapter->stats.ecol;
+ stats->tx_window_errors = adapter->stats.latecol;
+ stats->tx_carrier_errors = adapter->stats.tncrs;
+
+ /* Tx Dropped needs to be maintained elsewhere */
+
+ spin_unlock(&adapter->stats64_lock);
+ return stats;
+}
+
+/**
+ * e1000_change_mtu - Change the Maximum Transfer Unit
+ * @netdev: network interface device structure
+ * @new_mtu: new value for maximum frame size
+ *
+ * Returns 0 on success, negative on failure
+ **/
+static int e1000_change_mtu(struct net_device *netdev, int new_mtu)
+{
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+ int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
+
+ /* Jumbo frame support */
+ if ((max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) &&
+ !(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) {
+ e_err("Jumbo Frames not supported.\n");
+ return -EINVAL;
+ }
+
+ /* Supported frame sizes */
+ if ((new_mtu < ETH_ZLEN + ETH_FCS_LEN + VLAN_HLEN) ||
+ (max_frame > adapter->max_hw_frame_size)) {
+ e_err("Unsupported MTU setting\n");
+ return -EINVAL;
+ }
+
+ /* Jumbo frame workaround on 82579 requires CRC be stripped */
+ if ((adapter->hw.mac.type == e1000_pch2lan) &&
+ !(adapter->flags2 & FLAG2_CRC_STRIPPING) &&
+ (new_mtu > ETH_DATA_LEN)) {
+ e_err("Jumbo Frames not supported on 82579 when CRC "
+ "stripping is disabled.\n");
+ return -EINVAL;
+ }
+
+ /* 82573 Errata 17 */
+ if (((adapter->hw.mac.type == e1000_82573) ||
+ (adapter->hw.mac.type == e1000_82574)) &&
+ (max_frame > ETH_FRAME_LEN + ETH_FCS_LEN)) {
+ adapter->flags2 |= FLAG2_DISABLE_ASPM_L1;
+ e1000e_disable_aspm(adapter->pdev, PCIE_LINK_STATE_L1);
+ }
+
+ while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
+ usleep_range(1000, 2000);
+ /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */
+ adapter->max_frame_size = max_frame;
+ e_info("changing MTU from %d to %d\n", netdev->mtu, new_mtu);
+ netdev->mtu = new_mtu;
+ if (netif_running(netdev))
+ e1000e_down(adapter);
+
+ /*
+ * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
+ * means we reserve 2 more, this pushes us to allocate from the next
+ * larger slab size.
+ * i.e. RXBUFFER_2048 --> size-4096 slab
+ * However with the new *_jumbo_rx* routines, jumbo receives will use
+ * fragmented skbs
+ */
+
+ if (max_frame <= 2048)
+ adapter->rx_buffer_len = 2048;
+ else
+ adapter->rx_buffer_len = 4096;
+
+ /* adjust allocation if LPE protects us, and we aren't using SBP */
+ if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) ||
+ (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN))
+ adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN
+ + ETH_FCS_LEN;
+
+ if (netif_running(netdev))
+ e1000e_up(adapter);
+ else
+ e1000e_reset(adapter);
+
+ clear_bit(__E1000_RESETTING, &adapter->state);
+
+ return 0;
+}
+
+static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
+ int cmd)
+{
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+ struct mii_ioctl_data *data = if_mii(ifr);
+
+ if (adapter->hw.phy.media_type != e1000_media_type_copper)
+ return -EOPNOTSUPP;
+
+ switch (cmd) {
+ case SIOCGMIIPHY:
+ data->phy_id = adapter->hw.phy.addr;
+ break;
+ case SIOCGMIIREG:
+ e1000_phy_read_status(adapter);
+
+ switch (data->reg_num & 0x1F) {
+ case MII_BMCR:
+ data->val_out = adapter->phy_regs.bmcr;
+ break;
+ case MII_BMSR:
+ data->val_out = adapter->phy_regs.bmsr;
+ break;
+ case MII_PHYSID1:
+ data->val_out = (adapter->hw.phy.id >> 16);
+ break;
+ case MII_PHYSID2:
+ data->val_out = (adapter->hw.phy.id & 0xFFFF);
+ break;
+ case MII_ADVERTISE:
+ data->val_out = adapter->phy_regs.advertise;
+ break;
+ case MII_LPA:
+ data->val_out = adapter->phy_regs.lpa;
+ break;
+ case MII_EXPANSION:
+ data->val_out = adapter->phy_regs.expansion;
+ break;
+ case MII_CTRL1000:
+ data->val_out = adapter->phy_regs.ctrl1000;
+ break;
+ case MII_STAT1000:
+ data->val_out = adapter->phy_regs.stat1000;
+ break;
+ case MII_ESTATUS:
+ data->val_out = adapter->phy_regs.estatus;
+ break;
+ default:
+ return -EIO;
+ }
+ break;
+ case SIOCSMIIREG:
+ default:
+ return -EOPNOTSUPP;
+ }
+ return 0;
+}
+
+static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
+{
+ switch (cmd) {
+ case SIOCGMIIPHY:
+ case SIOCGMIIREG:
+ case SIOCSMIIREG:
+ return e1000_mii_ioctl(netdev, ifr, cmd);
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static int e1000_init_phy_wakeup(struct e1000_adapter *adapter, u32 wufc)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ u32 i, mac_reg;
+ u16 phy_reg, wuc_enable;
+ int retval = 0;
+
+ /* copy MAC RARs to PHY RARs */
+ e1000_copy_rx_addrs_to_phy_ich8lan(hw);
+
+ retval = hw->phy.ops.acquire(hw);
+ if (retval) {
+ e_err("Could not acquire PHY\n");
+ return retval;
+ }
+
+ /* Enable access to wakeup registers on and set page to BM_WUC_PAGE */
+ retval = e1000_enable_phy_wakeup_reg_access_bm(hw, &wuc_enable);
+ if (retval)
+ goto out;
+
+ /* copy MAC MTA to PHY MTA - only needed for pchlan */
+ for (i = 0; i < adapter->hw.mac.mta_reg_count; i++) {
+ mac_reg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i);
+ hw->phy.ops.write_reg_page(hw, BM_MTA(i),
+ (u16)(mac_reg & 0xFFFF));
+ hw->phy.ops.write_reg_page(hw, BM_MTA(i) + 1,
+ (u16)((mac_reg >> 16) & 0xFFFF));
+ }
+
+ /* configure PHY Rx Control register */
+ hw->phy.ops.read_reg_page(&adapter->hw, BM_RCTL, &phy_reg);
+ mac_reg = er32(RCTL);
+ if (mac_reg & E1000_RCTL_UPE)
+ phy_reg |= BM_RCTL_UPE;
+ if (mac_reg & E1000_RCTL_MPE)
+ phy_reg |= BM_RCTL_MPE;
+ phy_reg &= ~(BM_RCTL_MO_MASK);
+ if (mac_reg & E1000_RCTL_MO_3)
+ phy_reg |= (((mac_reg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT)
+ << BM_RCTL_MO_SHIFT);
+ if (mac_reg & E1000_RCTL_BAM)
+ phy_reg |= BM_RCTL_BAM;
+ if (mac_reg & E1000_RCTL_PMCF)
+ phy_reg |= BM_RCTL_PMCF;
+ mac_reg = er32(CTRL);
+ if (mac_reg & E1000_CTRL_RFCE)
+ phy_reg |= BM_RCTL_RFCE;
+ hw->phy.ops.write_reg_page(&adapter->hw, BM_RCTL, phy_reg);
+
+ /* enable PHY wakeup in MAC register */
+ ew32(WUFC, wufc);
+ ew32(WUC, E1000_WUC_PHY_WAKE | E1000_WUC_PME_EN);
+
+ /* configure and enable PHY wakeup in PHY registers */
+ hw->phy.ops.write_reg_page(&adapter->hw, BM_WUFC, wufc);
+ hw->phy.ops.write_reg_page(&adapter->hw, BM_WUC, E1000_WUC_PME_EN);
+
+ /* activate PHY wakeup */
+ wuc_enable |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT;
+ retval = e1000_disable_phy_wakeup_reg_access_bm(hw, &wuc_enable);
+ if (retval)
+ e_err("Could not set PHY Host Wakeup bit\n");
+out:
+ hw->phy.ops.release(hw);
+
+ return retval;
+}
+
+static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake,
+ bool runtime)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+ struct e1000_hw *hw = &adapter->hw;
+ u32 ctrl, ctrl_ext, rctl, status;
+ /* Runtime suspend should only enable wakeup for link changes */
+ u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol;
+ int retval = 0;
+
+ netif_device_detach(netdev);
+
+ if (netif_running(netdev)) {
+ WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
+ e1000e_down(adapter);
+ e1000_free_irq(adapter);
+ }
+ e1000e_reset_interrupt_capability(adapter);
+
+ retval = pci_save_state(pdev);
+ if (retval)
+ return retval;
+
+ status = er32(STATUS);
+ if (status & E1000_STATUS_LU)
+ wufc &= ~E1000_WUFC_LNKC;
+
+ if (wufc) {
+ e1000_setup_rctl(adapter);
+ e1000_set_multi(netdev);
+
+ /* turn on all-multi mode if wake on multicast is enabled */
+ if (wufc & E1000_WUFC_MC) {
+ rctl = er32(RCTL);
+ rctl |= E1000_RCTL_MPE;
+ ew32(RCTL, rctl);
+ }
+
+ ctrl = er32(CTRL);
+ /* advertise wake from D3Cold */
+ #define E1000_CTRL_ADVD3WUC 0x00100000
+ /* phy power management enable */
+ #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
+ ctrl |= E1000_CTRL_ADVD3WUC;
+ if (!(adapter->flags2 & FLAG2_HAS_PHY_WAKEUP))
+ ctrl |= E1000_CTRL_EN_PHY_PWR_MGMT;
+ ew32(CTRL, ctrl);
+
+ if (adapter->hw.phy.media_type == e1000_media_type_fiber ||
+ adapter->hw.phy.media_type ==
+ e1000_media_type_internal_serdes) {
+ /* keep the laser running in D3 */
+ ctrl_ext = er32(CTRL_EXT);
+ ctrl_ext |= E1000_CTRL_EXT_SDP3_DATA;
+ ew32(CTRL_EXT, ctrl_ext);
+ }
+
+ if (adapter->flags & FLAG_IS_ICH)
+ e1000_suspend_workarounds_ich8lan(&adapter->hw);
+
+ /* Allow time for pending master requests to run */
+ e1000e_disable_pcie_master(&adapter->hw);
+
+ if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) {
+ /* enable wakeup by the PHY */
+ retval = e1000_init_phy_wakeup(adapter, wufc);
+ if (retval)
+ return retval;
+ } else {
+ /* enable wakeup by the MAC */
+ ew32(WUFC, wufc);
+ ew32(WUC, E1000_WUC_PME_EN);
+ }
+ } else {
+ ew32(WUC, 0);
+ ew32(WUFC, 0);
+ }
+
+ *enable_wake = !!wufc;
+
+ /* make sure adapter isn't asleep if manageability is enabled */
+ if ((adapter->flags & FLAG_MNG_PT_ENABLED) ||
+ (hw->mac.ops.check_mng_mode(hw)))
+ *enable_wake = true;
+
+ if (adapter->hw.phy.type == e1000_phy_igp_3)
+ e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw);
+
+ /*
+ * Release control of h/w to f/w. If f/w is AMT enabled, this
+ * would have already happened in close and is redundant.
+ */
+ e1000e_release_hw_control(adapter);
+
+ pci_disable_device(pdev);
+
+ return 0;
+}
+
+static void e1000_power_off(struct pci_dev *pdev, bool sleep, bool wake)
+{
+ if (sleep && wake) {
+ pci_prepare_to_sleep(pdev);
+ return;
+ }
+
+ pci_wake_from_d3(pdev, wake);
+ pci_set_power_state(pdev, PCI_D3hot);
+}
+
+static void e1000_complete_shutdown(struct pci_dev *pdev, bool sleep,
+ bool wake)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+
+ /*
+ * The pci-e switch on some quad port adapters will report a
+ * correctable error when the MAC transitions from D0 to D3. To
+ * prevent this we need to mask off the correctable errors on the
+ * downstream port of the pci-e switch.
+ */
+ if (adapter->flags & FLAG_IS_QUAD_PORT) {
+ struct pci_dev *us_dev = pdev->bus->self;
+ int pos = pci_pcie_cap(us_dev);
+ u16 devctl;
+
+ pci_read_config_word(us_dev, pos + PCI_EXP_DEVCTL, &devctl);
+ pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL,
+ (devctl & ~PCI_EXP_DEVCTL_CERE));
+
+ e1000_power_off(pdev, sleep, wake);
+
+ pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, devctl);
+ } else {
+ e1000_power_off(pdev, sleep, wake);
+ }
+}
+
+#ifdef CONFIG_PCIEASPM
+static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
+{
+ pci_disable_link_state_locked(pdev, state);
+}
+#else
+static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
+{
+ int pos;
+ u16 reg16;
+
+ /*
+ * Both device and parent should have the same ASPM setting.
+ * Disable ASPM in downstream component first and then upstream.
+ */
+ pos = pci_pcie_cap(pdev);
+ pci_read_config_word(pdev, pos + PCI_EXP_LNKCTL, ®16);
+ reg16 &= ~state;
+ pci_write_config_word(pdev, pos + PCI_EXP_LNKCTL, reg16);
+
+ if (!pdev->bus->self)
+ return;
+
+ pos = pci_pcie_cap(pdev->bus->self);
+ pci_read_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, ®16);
+ reg16 &= ~state;
+ pci_write_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, reg16);
+}
+#endif
+static void e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
+{
+ dev_info(&pdev->dev, "Disabling ASPM %s %s\n",
+ (state & PCIE_LINK_STATE_L0S) ? "L0s" : "",
+ (state & PCIE_LINK_STATE_L1) ? "L1" : "");
+
+ __e1000e_disable_aspm(pdev, state);
+}
+
+#ifdef CONFIG_PM
+static bool e1000e_pm_ready(struct e1000_adapter *adapter)
+{
+ return !!adapter->tx_ring->buffer_info;
+}
+
+static int __e1000_resume(struct pci_dev *pdev)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+ struct e1000_hw *hw = &adapter->hw;
+ u16 aspm_disable_flag = 0;
+ u32 err;
+
+ if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S)
+ aspm_disable_flag = PCIE_LINK_STATE_L0S;
+ if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1)
+ aspm_disable_flag |= PCIE_LINK_STATE_L1;
+ if (aspm_disable_flag)
+ e1000e_disable_aspm(pdev, aspm_disable_flag);
+
+ pci_set_power_state(pdev, PCI_D0);
+ pci_restore_state(pdev);
+ pci_save_state(pdev);
+
+ e1000e_set_interrupt_capability(adapter);
+ if (netif_running(netdev)) {
+ err = e1000_request_irq(adapter);
+ if (err)
+ return err;
+ }
+
+ if (hw->mac.type == e1000_pch2lan)
+ e1000_resume_workarounds_pchlan(&adapter->hw);
+
+ e1000e_power_up_phy(adapter);
+
+ /* report the system wakeup cause from S3/S4 */
+ if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) {
+ u16 phy_data;
+
+ e1e_rphy(&adapter->hw, BM_WUS, &phy_data);
+ if (phy_data) {
+ e_info("PHY Wakeup cause - %s\n",
+ phy_data & E1000_WUS_EX ? "Unicast Packet" :
+ phy_data & E1000_WUS_MC ? "Multicast Packet" :
+ phy_data & E1000_WUS_BC ? "Broadcast Packet" :
+ phy_data & E1000_WUS_MAG ? "Magic Packet" :
+ phy_data & E1000_WUS_LNKC ? "Link Status "
+ " Change" : "other");
+ }
+ e1e_wphy(&adapter->hw, BM_WUS, ~0);
+ } else {
+ u32 wus = er32(WUS);
+ if (wus) {
+ e_info("MAC Wakeup cause - %s\n",
+ wus & E1000_WUS_EX ? "Unicast Packet" :
+ wus & E1000_WUS_MC ? "Multicast Packet" :
+ wus & E1000_WUS_BC ? "Broadcast Packet" :
+ wus & E1000_WUS_MAG ? "Magic Packet" :
+ wus & E1000_WUS_LNKC ? "Link Status Change" :
+ "other");
+ }
+ ew32(WUS, ~0);
+ }
+
+ e1000e_reset(adapter);
+
+ e1000_init_manageability_pt(adapter);
+
+ if (netif_running(netdev))
+ e1000e_up(adapter);
+
+ netif_device_attach(netdev);
+
+ /*
+ * If the controller has AMT, do not set DRV_LOAD until the interface
+ * is up. For all other cases, let the f/w know that the h/w is now
+ * under the control of the driver.
+ */
+ if (!(adapter->flags & FLAG_HAS_AMT))
+ e1000e_get_hw_control(adapter);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int e1000_suspend(struct device *dev)
+{
+ struct pci_dev *pdev = to_pci_dev(dev);
+ int retval;
+ bool wake;
+
+ retval = __e1000_shutdown(pdev, &wake, false);
+ if (!retval)
+ e1000_complete_shutdown(pdev, true, wake);
+
+ return retval;
+}
+
+static int e1000_resume(struct device *dev)
+{
+ struct pci_dev *pdev = to_pci_dev(dev);
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+
+ if (e1000e_pm_ready(adapter))
+ adapter->idle_check = true;
+
+ return __e1000_resume(pdev);
+}
+#endif /* CONFIG_PM_SLEEP */
+
+#ifdef CONFIG_PM_RUNTIME
+static int e1000_runtime_suspend(struct device *dev)
+{
+ struct pci_dev *pdev = to_pci_dev(dev);
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+
+ if (e1000e_pm_ready(adapter)) {
+ bool wake;
+
+ __e1000_shutdown(pdev, &wake, true);
+ }
+
+ return 0;
+}
+
+static int e1000_idle(struct device *dev)
+{
+ struct pci_dev *pdev = to_pci_dev(dev);
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+
+ if (!e1000e_pm_ready(adapter))
+ return 0;
+
+ if (adapter->idle_check) {
+ adapter->idle_check = false;
+ if (!e1000e_has_link(adapter))
+ pm_schedule_suspend(dev, MSEC_PER_SEC);
+ }
+
+ return -EBUSY;
+}
+
+static int e1000_runtime_resume(struct device *dev)
+{
+ struct pci_dev *pdev = to_pci_dev(dev);
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+
+ if (!e1000e_pm_ready(adapter))
+ return 0;
+
+ adapter->idle_check = !dev->power.runtime_auto;
+ return __e1000_resume(pdev);
+}
+#endif /* CONFIG_PM_RUNTIME */
+#endif /* CONFIG_PM */
+
+static void e1000_shutdown(struct pci_dev *pdev)
+{
+ bool wake = false;
+
+ __e1000_shutdown(pdev, &wake, false);
+
+ if (system_state == SYSTEM_POWER_OFF)
+ e1000_complete_shutdown(pdev, false, wake);
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+
+static irqreturn_t e1000_intr_msix(int irq, void *data)
+{
+ struct net_device *netdev = data;
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+
+ if (adapter->msix_entries) {
+ int vector, msix_irq;
+
+ vector = 0;
+ msix_irq = adapter->msix_entries[vector].vector;
+ disable_irq(msix_irq);
+ e1000_intr_msix_rx(msix_irq, netdev);
+ enable_irq(msix_irq);
+
+ vector++;
+ msix_irq = adapter->msix_entries[vector].vector;
+ disable_irq(msix_irq);
+ e1000_intr_msix_tx(msix_irq, netdev);
+ enable_irq(msix_irq);
+
+ vector++;
+ msix_irq = adapter->msix_entries[vector].vector;
+ disable_irq(msix_irq);
+ e1000_msix_other(msix_irq, netdev);
+ enable_irq(msix_irq);
+ }
+
+ return IRQ_HANDLED;
+}
+
+/*
+ * Polling 'interrupt' - used by things like netconsole to send skbs
+ * without having to re-enable interrupts. It's not called while
+ * the interrupt routine is executing.
+ */
+static void e1000_netpoll(struct net_device *netdev)
+{
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+
+ switch (adapter->int_mode) {
+ case E1000E_INT_MODE_MSIX:
+ e1000_intr_msix(adapter->pdev->irq, netdev);
+ break;
+ case E1000E_INT_MODE_MSI:
+ disable_irq(adapter->pdev->irq);
+ e1000_intr_msi(adapter->pdev->irq, netdev);
+ enable_irq(adapter->pdev->irq);
+ break;
+ default: /* E1000E_INT_MODE_LEGACY */
+ disable_irq(adapter->pdev->irq);
+ e1000_intr(adapter->pdev->irq, netdev);
+ enable_irq(adapter->pdev->irq);
+ break;
+ }
+}
+#endif
+
+/**
+ * e1000_io_error_detected - called when PCI error is detected
+ * @pdev: Pointer to PCI device
+ * @state: The current pci connection state
+ *
+ * This function is called after a PCI bus error affecting
+ * this device has been detected.
+ */
+static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
+ pci_channel_state_t state)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+
+ netif_device_detach(netdev);
+
+ if (state == pci_channel_io_perm_failure)
+ return PCI_ERS_RESULT_DISCONNECT;
+
+ if (netif_running(netdev))
+ e1000e_down(adapter);
+ pci_disable_device(pdev);
+
+ /* Request a slot slot reset. */
+ return PCI_ERS_RESULT_NEED_RESET;
+}
+
+/**
+ * e1000_io_slot_reset - called after the pci bus has been reset.
+ * @pdev: Pointer to PCI device
+ *
+ * Restart the card from scratch, as if from a cold-boot. Implementation
+ * resembles the first-half of the e1000_resume routine.
+ */
+static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+ struct e1000_hw *hw = &adapter->hw;
+ u16 aspm_disable_flag = 0;
+ int err;
+ pci_ers_result_t result;
+
+ if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S)
+ aspm_disable_flag = PCIE_LINK_STATE_L0S;
+ if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1)
+ aspm_disable_flag |= PCIE_LINK_STATE_L1;
+ if (aspm_disable_flag)
+ e1000e_disable_aspm(pdev, aspm_disable_flag);
+
+ err = pci_enable_device_mem(pdev);
+ if (err) {
+ dev_err(&pdev->dev,
+ "Cannot re-enable PCI device after reset.\n");
+ result = PCI_ERS_RESULT_DISCONNECT;
+ } else {
+ pci_set_master(pdev);
+ pdev->state_saved = true;
+ pci_restore_state(pdev);
+
+ pci_enable_wake(pdev, PCI_D3hot, 0);
+ pci_enable_wake(pdev, PCI_D3cold, 0);
+
+ e1000e_reset(adapter);
+ ew32(WUS, ~0);
+ result = PCI_ERS_RESULT_RECOVERED;
+ }
+
+ pci_cleanup_aer_uncorrect_error_status(pdev);
+
+ return result;
+}
+
+/**
+ * e1000_io_resume - called when traffic can start flowing again.
+ * @pdev: Pointer to PCI device
+ *
+ * This callback is called when the error recovery driver tells us that
+ * its OK to resume normal operation. Implementation resembles the
+ * second-half of the e1000_resume routine.
+ */
+static void e1000_io_resume(struct pci_dev *pdev)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+
+ e1000_init_manageability_pt(adapter);
+
+ if (netif_running(netdev)) {
+ if (e1000e_up(adapter)) {
+ dev_err(&pdev->dev,
+ "can't bring device back up after reset\n");
+ return;
+ }
+ }
+
+ netif_device_attach(netdev);
+
+ /*
+ * If the controller has AMT, do not set DRV_LOAD until the interface
+ * is up. For all other cases, let the f/w know that the h/w is now
+ * under the control of the driver.
+ */
+ if (!(adapter->flags & FLAG_HAS_AMT))
+ e1000e_get_hw_control(adapter);
+
+}
+
+static void e1000_print_device_info(struct e1000_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ struct net_device *netdev = adapter->netdev;
+ u32 ret_val;
+ u8 pba_str[E1000_PBANUM_LENGTH];
+
+ /* print bus type/speed/width info */
+ e_info("(PCI Express:2.5GT/s:%s) %pM\n",
+ /* bus width */
+ ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" :
+ "Width x1"),
+ /* MAC address */
+ netdev->dev_addr);
+ e_info("Intel(R) PRO/%s Network Connection\n",
+ (hw->phy.type == e1000_phy_ife) ? "10/100" : "1000");
+ ret_val = e1000_read_pba_string_generic(hw, pba_str,
+ E1000_PBANUM_LENGTH);
+ if (ret_val)
+ strncpy((char *)pba_str, "Unknown", sizeof(pba_str) - 1);
+ e_info("MAC: %d, PHY: %d, PBA No: %s\n",
+ hw->mac.type, hw->phy.type, pba_str);
+}
+
+static void e1000_eeprom_checks(struct e1000_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ int ret_val;
+ u16 buf = 0;
+
+ if (hw->mac.type != e1000_82573)
+ return;
+
+ ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &buf);
+ if (!ret_val && (!(le16_to_cpu(buf) & (1 << 0)))) {
+ /* Deep Smart Power Down (DSPD) */
+ dev_warn(&adapter->pdev->dev,
+ "Warning: detected DSPD enabled in EEPROM\n");
+ }
+}
+
+static const struct net_device_ops e1000e_netdev_ops = {
+ .ndo_open = e1000_open,
+ .ndo_stop = e1000_close,
+ .ndo_start_xmit = e1000_xmit_frame,
+ .ndo_get_stats64 = e1000e_get_stats64,
+ .ndo_set_rx_mode = e1000_set_multi,
+ .ndo_set_mac_address = e1000_set_mac,
+ .ndo_change_mtu = e1000_change_mtu,
+ .ndo_do_ioctl = e1000_ioctl,
+ .ndo_tx_timeout = e1000_tx_timeout,
+ .ndo_validate_addr = eth_validate_addr,
+
+ .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid,
+ .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = e1000_netpoll,
+#endif
+};
+
+/**
+ * e1000_probe - Device Initialization Routine
+ * @pdev: PCI device information struct
+ * @ent: entry in e1000_pci_tbl
+ *
+ * Returns 0 on success, negative on failure
+ *
+ * e1000_probe initializes an adapter identified by a pci_dev structure.
+ * The OS initialization, configuring of the adapter private structure,
+ * and a hardware reset occur.
+ **/
+static int __devinit e1000_probe(struct pci_dev *pdev,
+ const struct pci_device_id *ent)
+{
+ struct net_device *netdev;
+ struct e1000_adapter *adapter;
+ struct e1000_hw *hw;
+ const struct e1000_info *ei = e1000_info_tbl[ent->driver_data];
+ resource_size_t mmio_start, mmio_len;
+ resource_size_t flash_start, flash_len;
+
+ static int cards_found;
+ u16 aspm_disable_flag = 0;
+ int i, err, pci_using_dac;
+ u16 eeprom_data = 0;
+ u16 eeprom_apme_mask = E1000_EEPROM_APME;
+
+ if (ei->flags2 & FLAG2_DISABLE_ASPM_L0S)
+ aspm_disable_flag = PCIE_LINK_STATE_L0S;
+ if (ei->flags2 & FLAG2_DISABLE_ASPM_L1)
+ aspm_disable_flag |= PCIE_LINK_STATE_L1;
+ if (aspm_disable_flag)
+ e1000e_disable_aspm(pdev, aspm_disable_flag);
+
+ err = pci_enable_device_mem(pdev);
+ if (err)
+ return err;
+
+ pci_using_dac = 0;
+ err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
+ if (!err) {
+ err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
+ if (!err)
+ pci_using_dac = 1;
+ } else {
+ err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
+ if (err) {
+ err = dma_set_coherent_mask(&pdev->dev,
+ DMA_BIT_MASK(32));
+ if (err) {
+ dev_err(&pdev->dev, "No usable DMA "
+ "configuration, aborting\n");
+ goto err_dma;
+ }
+ }
+ }
+
+ err = pci_request_selected_regions_exclusive(pdev,
+ pci_select_bars(pdev, IORESOURCE_MEM),
+ e1000e_driver_name);
+ if (err)
+ goto err_pci_reg;
+
+ /* AER (Advanced Error Reporting) hooks */
+ pci_enable_pcie_error_reporting(pdev);
+
+ pci_set_master(pdev);
+ /* PCI config space info */
+ err = pci_save_state(pdev);
+ if (err)
+ goto err_alloc_etherdev;
+
+ err = -ENOMEM;
+ netdev = alloc_etherdev(sizeof(struct e1000_adapter));
+ if (!netdev)
+ goto err_alloc_etherdev;
+
+ SET_NETDEV_DEV(netdev, &pdev->dev);
+
+ netdev->irq = pdev->irq;
+
+ pci_set_drvdata(pdev, netdev);
+ adapter = netdev_priv(netdev);
+ hw = &adapter->hw;
+ adapter->netdev = netdev;
+ adapter->pdev = pdev;
+ adapter->ei = ei;
+ adapter->pba = ei->pba;
+ adapter->flags = ei->flags;
+ adapter->flags2 = ei->flags2;
+ adapter->hw.adapter = adapter;
+ adapter->hw.mac.type = ei->mac;
+ adapter->max_hw_frame_size = ei->max_hw_frame_size;
+ adapter->msg_enable = (1 << NETIF_MSG_DRV | NETIF_MSG_PROBE) - 1;
+
+ mmio_start = pci_resource_start(pdev, 0);
+ mmio_len = pci_resource_len(pdev, 0);
+
+ err = -EIO;
+ adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
+ if (!adapter->hw.hw_addr)
+ goto err_ioremap;
+
+ if ((adapter->flags & FLAG_HAS_FLASH) &&
+ (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
+ flash_start = pci_resource_start(pdev, 1);
+ flash_len = pci_resource_len(pdev, 1);
+ adapter->hw.flash_address = ioremap(flash_start, flash_len);
+ if (!adapter->hw.flash_address)
+ goto err_flashmap;
+ }
+
+ /* construct the net_device struct */
+ netdev->netdev_ops = &e1000e_netdev_ops;
+ e1000e_set_ethtool_ops(netdev);
+ netdev->watchdog_timeo = 5 * HZ;
+ netif_napi_add(netdev, &adapter->napi, e1000_clean, 64);
+ strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
+
+ netdev->mem_start = mmio_start;
+ netdev->mem_end = mmio_start + mmio_len;
+
+ adapter->bd_number = cards_found++;
+
+ e1000e_check_options(adapter);
+
+ /* setup adapter struct */
+ err = e1000_sw_init(adapter);
+ if (err)
+ goto err_sw_init;
+
+ memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops));
+ memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops));
+ memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops));
+
+ err = ei->get_variants(adapter);
+ if (err)
+ goto err_hw_init;
+
+ if ((adapter->flags & FLAG_IS_ICH) &&
+ (adapter->flags & FLAG_READ_ONLY_NVM))
+ e1000e_write_protect_nvm_ich8lan(&adapter->hw);
+
+ hw->mac.ops.get_bus_info(&adapter->hw);
+
+ adapter->hw.phy.autoneg_wait_to_complete = 0;
+
+ /* Copper options */
+ if (adapter->hw.phy.media_type == e1000_media_type_copper) {
+ adapter->hw.phy.mdix = AUTO_ALL_MODES;
+ adapter->hw.phy.disable_polarity_correction = 0;
+ adapter->hw.phy.ms_type = e1000_ms_hw_default;
+ }
+
+ if (e1000_check_reset_block(&adapter->hw))
+ e_info("PHY reset is blocked due to SOL/IDER session.\n");
+
+ netdev->features = NETIF_F_SG |
+ NETIF_F_HW_CSUM |
+ NETIF_F_HW_VLAN_TX |
+ NETIF_F_HW_VLAN_RX;
+
+ if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER)
+ netdev->features |= NETIF_F_HW_VLAN_FILTER;
+
+ netdev->features |= NETIF_F_TSO;
+ netdev->features |= NETIF_F_TSO6;
+
+ netdev->vlan_features |= NETIF_F_TSO;
+ netdev->vlan_features |= NETIF_F_TSO6;
+ netdev->vlan_features |= NETIF_F_HW_CSUM;
+ netdev->vlan_features |= NETIF_F_SG;
+
+ if (pci_using_dac) {
+ netdev->features |= NETIF_F_HIGHDMA;
+ netdev->vlan_features |= NETIF_F_HIGHDMA;
+ }
+
+ if (e1000e_enable_mng_pass_thru(&adapter->hw))
+ adapter->flags |= FLAG_MNG_PT_ENABLED;
+
+ /*
+ * before reading the NVM, reset the controller to
+ * put the device in a known good starting state
+ */
+ adapter->hw.mac.ops.reset_hw(&adapter->hw);
+
+ /*
+ * systems with ASPM and others may see the checksum fail on the first
+ * attempt. Let's give it a few tries
+ */
+ for (i = 0;; i++) {
+ if (e1000_validate_nvm_checksum(&adapter->hw) >= 0)
+ break;
+ if (i == 2) {
+ e_err("The NVM Checksum Is Not Valid\n");
+ err = -EIO;
+ goto err_eeprom;
+ }
+ }
+
+ e1000_eeprom_checks(adapter);
+
+ /* copy the MAC address */
+ if (e1000e_read_mac_addr(&adapter->hw))
+ e_err("NVM Read Error while reading MAC address\n");
+
+ memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len);
+ memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len);
+
+ if (!is_valid_ether_addr(netdev->perm_addr)) {
+ e_err("Invalid MAC Address: %pM\n", netdev->perm_addr);
+ err = -EIO;
+ goto err_eeprom;
+ }
+
+ init_timer(&adapter->watchdog_timer);
+ adapter->watchdog_timer.function = e1000_watchdog;
+ adapter->watchdog_timer.data = (unsigned long) adapter;
+
+ init_timer(&adapter->phy_info_timer);
+ adapter->phy_info_timer.function = e1000_update_phy_info;
+ adapter->phy_info_timer.data = (unsigned long) adapter;
+
+ INIT_WORK(&adapter->reset_task, e1000_reset_task);
+ INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task);
+ INIT_WORK(&adapter->downshift_task, e1000e_downshift_workaround);
+ INIT_WORK(&adapter->update_phy_task, e1000e_update_phy_task);
+ INIT_WORK(&adapter->print_hang_task, e1000_print_hw_hang);
+
+ /* Initialize link parameters. User can change them with ethtool */
+ adapter->hw.mac.autoneg = 1;
+ adapter->fc_autoneg = 1;
+ adapter->hw.fc.requested_mode = e1000_fc_default;
+ adapter->hw.fc.current_mode = e1000_fc_default;
+ adapter->hw.phy.autoneg_advertised = 0x2f;
+
+ /* ring size defaults */
+ adapter->rx_ring->count = 256;
+ adapter->tx_ring->count = 256;
+
+ /*
+ * Initial Wake on LAN setting - If APM wake is enabled in
+ * the EEPROM, enable the ACPI Magic Packet filter
+ */
+ if (adapter->flags & FLAG_APME_IN_WUC) {
+ /* APME bit in EEPROM is mapped to WUC.APME */
+ eeprom_data = er32(WUC);
+ eeprom_apme_mask = E1000_WUC_APME;
+ if ((hw->mac.type > e1000_ich10lan) &&
+ (eeprom_data & E1000_WUC_PHY_WAKE))
+ adapter->flags2 |= FLAG2_HAS_PHY_WAKEUP;
+ } else if (adapter->flags & FLAG_APME_IN_CTRL3) {
+ if (adapter->flags & FLAG_APME_CHECK_PORT_B &&
+ (adapter->hw.bus.func == 1))
+ e1000_read_nvm(&adapter->hw,
+ NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
+ else
+ e1000_read_nvm(&adapter->hw,
+ NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
+ }
+
+ /* fetch WoL from EEPROM */
+ if (eeprom_data & eeprom_apme_mask)
+ adapter->eeprom_wol |= E1000_WUFC_MAG;
+
+ /*
+ * now that we have the eeprom settings, apply the special cases
+ * where the eeprom may be wrong or the board simply won't support
+ * wake on lan on a particular port
+ */
+ if (!(adapter->flags & FLAG_HAS_WOL))
+ adapter->eeprom_wol = 0;
+
+ /* initialize the wol settings based on the eeprom settings */
+ adapter->wol = adapter->eeprom_wol;
+ device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
+
+ /* save off EEPROM version number */
+ e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers);
+
+ /* reset the hardware with the new settings */
+ e1000e_reset(adapter);
+
+ /*
+ * If the controller has AMT, do not set DRV_LOAD until the interface
+ * is up. For all other cases, let the f/w know that the h/w is now
+ * under the control of the driver.
+ */
+ if (!(adapter->flags & FLAG_HAS_AMT))
+ e1000e_get_hw_control(adapter);
+
+ strncpy(netdev->name, "eth%d", sizeof(netdev->name) - 1);
+ err = register_netdev(netdev);
+ if (err)
+ goto err_register;
+
+ /* carrier off reporting is important to ethtool even BEFORE open */
+ netif_carrier_off(netdev);
+
+ e1000_print_device_info(adapter);
+
+ if (pci_dev_run_wake(pdev))
+ pm_runtime_put_noidle(&pdev->dev);
+
+ return 0;
+
+err_register:
+ if (!(adapter->flags & FLAG_HAS_AMT))
+ e1000e_release_hw_control(adapter);
+err_eeprom:
+ if (!e1000_check_reset_block(&adapter->hw))
+ e1000_phy_hw_reset(&adapter->hw);
+err_hw_init:
+ kfree(adapter->tx_ring);
+ kfree(adapter->rx_ring);
+err_sw_init:
+ if (adapter->hw.flash_address)
+ iounmap(adapter->hw.flash_address);
+ e1000e_reset_interrupt_capability(adapter);
+err_flashmap:
+ iounmap(adapter->hw.hw_addr);
+err_ioremap:
+ free_netdev(netdev);
+err_alloc_etherdev:
+ pci_release_selected_regions(pdev,
+ pci_select_bars(pdev, IORESOURCE_MEM));
+err_pci_reg:
+err_dma:
+ pci_disable_device(pdev);
+ return err;
+}
+
+/**
+ * e1000_remove - Device Removal Routine
+ * @pdev: PCI device information struct
+ *
+ * e1000_remove is called by the PCI subsystem to alert the driver
+ * that it should release a PCI device. The could be caused by a
+ * Hot-Plug event, or because the driver is going to be removed from
+ * memory.
+ **/
+static void __devexit e1000_remove(struct pci_dev *pdev)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct e1000_adapter *adapter = netdev_priv(netdev);
+ bool down = test_bit(__E1000_DOWN, &adapter->state);
+
+ /*
+ * The timers may be rescheduled, so explicitly disable them
+ * from being rescheduled.
+ */
+ if (!down)
+ set_bit(__E1000_DOWN, &adapter->state);
+ del_timer_sync(&adapter->watchdog_timer);
+ del_timer_sync(&adapter->phy_info_timer);
+
+ cancel_work_sync(&adapter->reset_task);
+ cancel_work_sync(&adapter->watchdog_task);
+ cancel_work_sync(&adapter->downshift_task);
+ cancel_work_sync(&adapter->update_phy_task);
+ cancel_work_sync(&adapter->print_hang_task);
+
+ if (!(netdev->flags & IFF_UP))
+ e1000_power_down_phy(adapter);
+
+ /* Don't lie to e1000_close() down the road. */
+ if (!down)
+ clear_bit(__E1000_DOWN, &adapter->state);
+ unregister_netdev(netdev);
+
+ if (pci_dev_run_wake(pdev))
+ pm_runtime_get_noresume(&pdev->dev);
+
+ /*
+ * Release control of h/w to f/w. If f/w is AMT enabled, this
+ * would have already happened in close and is redundant.
+ */
+ e1000e_release_hw_control(adapter);
+
+ e1000e_reset_interrupt_capability(adapter);
+ kfree(adapter->tx_ring);
+ kfree(adapter->rx_ring);
+
+ iounmap(adapter->hw.hw_addr);
+ if (adapter->hw.flash_address)
+ iounmap(adapter->hw.flash_address);
+ pci_release_selected_regions(pdev,
+ pci_select_bars(pdev, IORESOURCE_MEM));
+
+ free_netdev(netdev);
+
+ /* AER disable */
+ pci_disable_pcie_error_reporting(pdev);
+
+ pci_disable_device(pdev);
+}
+
+/* PCI Error Recovery (ERS) */
+static struct pci_error_handlers e1000_err_handler = {
+ .error_detected = e1000_io_error_detected,
+ .slot_reset = e1000_io_slot_reset,
+ .resume = e1000_io_resume,
+};
+
+static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl) = {
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), board_82571 },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_DUAL), board_82571 },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_QUAD), board_82571 },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571PT_QUAD_COPPER), board_82571 },
+
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 },
+
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 },
+
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574L), board_82574 },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574LA), board_82574 },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_82583V), board_82583 },
+
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT),
+ board_80003es2lan },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT),
+ board_80003es2lan },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT),
+ board_80003es2lan },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT),
+ board_80003es2lan },
+
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_82567V_3), board_ich8lan },
+
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_BM), board_ich9lan },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M), board_ich9lan },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_AMT), board_ich9lan },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_V), board_ich9lan },
+
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LM), board_ich9lan },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LF), board_ich9lan },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_V), board_ich9lan },
+
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LM), board_ich10lan },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LF), board_ich10lan },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_V), board_ich10lan },
+
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LM), board_pchlan },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LC), board_pchlan },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DM), board_pchlan },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DC), board_pchlan },
+
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_LM), board_pch2lan },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_V), board_pch2lan },
+
+ { } /* terminate list */
+};
+MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
+
+#ifdef CONFIG_PM
+static const struct dev_pm_ops e1000_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(e1000_suspend, e1000_resume)
+ SET_RUNTIME_PM_OPS(e1000_runtime_suspend,
+ e1000_runtime_resume, e1000_idle)
+};
+#endif
+
+/* PCI Device API Driver */
+static struct pci_driver e1000_driver = {
+ .name = e1000e_driver_name,
+ .id_table = e1000_pci_tbl,
+ .probe = e1000_probe,
+ .remove = __devexit_p(e1000_remove),
+#ifdef CONFIG_PM
+ .driver.pm = &e1000_pm_ops,
+#endif
+ .shutdown = e1000_shutdown,
+ .err_handler = &e1000_err_handler
+};
+
+/**
+ * e1000_init_module - Driver Registration Routine
+ *
+ * e1000_init_module is the first routine called when the driver is
+ * loaded. All it does is register with the PCI subsystem.
+ **/
+static int __init e1000_init_module(void)
+{
+ int ret;
+ pr_info("Intel(R) PRO/1000 Network Driver - %s\n",
+ e1000e_driver_version);
+ pr_info("Copyright(c) 1999 - 2011 Intel Corporation.\n");
+ ret = pci_register_driver(&e1000_driver);
+
+ return ret;
+}
+module_init(e1000_init_module);
+
+/**
+ * e1000_exit_module - Driver Exit Cleanup Routine
+ *
+ * e1000_exit_module is called just before the driver is removed
+ * from memory.
+ **/
+static void __exit e1000_exit_module(void)
+{
+ pci_unregister_driver(&e1000_driver);
+}
+module_exit(e1000_exit_module);
+
+
+MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
+MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
+/* e1000_main.c */
--- /dev/null
- if (!ddp_bytes)
+/*******************************************************************************
+
+ Intel 10 Gigabit PCI Express Linux driver
+ Copyright(c) 1999 - 2011 Intel Corporation.
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms and conditions of the GNU General Public License,
+ version 2, as published by the Free Software Foundation.
+
+ This program is distributed in the hope it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ more details.
+
+ You should have received a copy of the GNU General Public License along with
+ this program; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+
+ The full GNU General Public License is included in this distribution in
+ the file called "COPYING".
+
+ Contact Information:
+ e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
+ Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/netdevice.h>
+#include <linux/vmalloc.h>
+#include <linux/string.h>
+#include <linux/in.h>
+#include <linux/interrupt.h>
+#include <linux/ip.h>
+#include <linux/tcp.h>
+#include <linux/sctp.h>
+#include <linux/pkt_sched.h>
+#include <linux/ipv6.h>
+#include <linux/slab.h>
+#include <net/checksum.h>
+#include <net/ip6_checksum.h>
+#include <linux/ethtool.h>
+#include <linux/if.h>
+#include <linux/if_vlan.h>
+#include <linux/prefetch.h>
+#include <scsi/fc/fc_fcoe.h>
+
+#include "ixgbe.h"
+#include "ixgbe_common.h"
+#include "ixgbe_dcb_82599.h"
+#include "ixgbe_sriov.h"
+
+char ixgbe_driver_name[] = "ixgbe";
+static const char ixgbe_driver_string[] =
+ "Intel(R) 10 Gigabit PCI Express Network Driver";
+#define MAJ 3
+#define MIN 4
+#define BUILD 8
+#define DRV_VERSION __stringify(MAJ) "." __stringify(MIN) "." \
+ __stringify(BUILD) "-k"
+const char ixgbe_driver_version[] = DRV_VERSION;
+static const char ixgbe_copyright[] =
+ "Copyright (c) 1999-2011 Intel Corporation.";
+
+static const struct ixgbe_info *ixgbe_info_tbl[] = {
+ [board_82598] = &ixgbe_82598_info,
+ [board_82599] = &ixgbe_82599_info,
+ [board_X540] = &ixgbe_X540_info,
+};
+
+/* ixgbe_pci_tbl - PCI Device ID Table
+ *
+ * Wildcard entries (PCI_ANY_ID) should come last
+ * Last entry must be all 0s
+ *
+ * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
+ * Class, Class Mask, private data (not used) }
+ */
+static DEFINE_PCI_DEVICE_TABLE(ixgbe_pci_tbl) = {
+ {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598),
+ board_82598 },
+ {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_DUAL_PORT),
+ board_82598 },
+ {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_SINGLE_PORT),
+ board_82598 },
+ {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT),
+ board_82598 },
+ {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT2),
+ board_82598 },
+ {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_CX4),
+ board_82598 },
+ {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_CX4_DUAL_PORT),
+ board_82598 },
+ {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_DA_DUAL_PORT),
+ board_82598 },
+ {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM),
+ board_82598 },
+ {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_XF_LR),
+ board_82598 },
+ {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_SFP_LOM),
+ board_82598 },
+ {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_BX),
+ board_82598 },
+ {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4),
+ board_82599 },
+ {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_XAUI_LOM),
+ board_82599 },
+ {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KR),
+ board_82599 },
+ {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP),
+ board_82599 },
+ {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_EM),
+ board_82599 },
+ {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4_MEZZ),
+ board_82599 },
+ {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_CX4),
+ board_82599 },
+ {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_BACKPLANE_FCOE),
+ board_82599 },
+ {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_FCOE),
+ board_82599 },
+ {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_T3_LOM),
+ board_82599 },
+ {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_COMBO_BACKPLANE),
+ board_82599 },
+ {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540T),
+ board_X540 },
+ {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_SF2),
+ board_82599 },
+ {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_LS),
+ board_82599 },
+
+ /* required last entry */
+ {0, }
+};
+MODULE_DEVICE_TABLE(pci, ixgbe_pci_tbl);
+
+#ifdef CONFIG_IXGBE_DCA
+static int ixgbe_notify_dca(struct notifier_block *, unsigned long event,
+ void *p);
+static struct notifier_block dca_notifier = {
+ .notifier_call = ixgbe_notify_dca,
+ .next = NULL,
+ .priority = 0
+};
+#endif
+
+#ifdef CONFIG_PCI_IOV
+static unsigned int max_vfs;
+module_param(max_vfs, uint, 0);
+MODULE_PARM_DESC(max_vfs,
+ "Maximum number of virtual functions to allocate per physical function");
+#endif /* CONFIG_PCI_IOV */
+
+MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
+MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
+#define DEFAULT_DEBUG_LEVEL_SHIFT 3
+
+static inline void ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ u32 gcr;
+ u32 gpie;
+ u32 vmdctl;
+
+#ifdef CONFIG_PCI_IOV
+ /* disable iov and allow time for transactions to clear */
+ pci_disable_sriov(adapter->pdev);
+#endif
+
+ /* turn off device IOV mode */
+ gcr = IXGBE_READ_REG(hw, IXGBE_GCR_EXT);
+ gcr &= ~(IXGBE_GCR_EXT_SRIOV);
+ IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr);
+ gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
+ gpie &= ~IXGBE_GPIE_VTMODE_MASK;
+ IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
+
+ /* set default pool back to 0 */
+ vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
+ vmdctl &= ~IXGBE_VT_CTL_POOL_MASK;
+ IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl);
+ IXGBE_WRITE_FLUSH(hw);
+
+ /* take a breather then clean up driver data */
+ msleep(100);
+
+ kfree(adapter->vfinfo);
+ adapter->vfinfo = NULL;
+
+ adapter->num_vfs = 0;
+ adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
+}
+
+static void ixgbe_service_event_schedule(struct ixgbe_adapter *adapter)
+{
+ if (!test_bit(__IXGBE_DOWN, &adapter->state) &&
+ !test_and_set_bit(__IXGBE_SERVICE_SCHED, &adapter->state))
+ schedule_work(&adapter->service_task);
+}
+
+static void ixgbe_service_event_complete(struct ixgbe_adapter *adapter)
+{
+ BUG_ON(!test_bit(__IXGBE_SERVICE_SCHED, &adapter->state));
+
+ /* flush memory to make sure state is correct before next watchog */
+ smp_mb__before_clear_bit();
+ clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state);
+}
+
+struct ixgbe_reg_info {
+ u32 ofs;
+ char *name;
+};
+
+static const struct ixgbe_reg_info ixgbe_reg_info_tbl[] = {
+
+ /* General Registers */
+ {IXGBE_CTRL, "CTRL"},
+ {IXGBE_STATUS, "STATUS"},
+ {IXGBE_CTRL_EXT, "CTRL_EXT"},
+
+ /* Interrupt Registers */
+ {IXGBE_EICR, "EICR"},
+
+ /* RX Registers */
+ {IXGBE_SRRCTL(0), "SRRCTL"},
+ {IXGBE_DCA_RXCTRL(0), "DRXCTL"},
+ {IXGBE_RDLEN(0), "RDLEN"},
+ {IXGBE_RDH(0), "RDH"},
+ {IXGBE_RDT(0), "RDT"},
+ {IXGBE_RXDCTL(0), "RXDCTL"},
+ {IXGBE_RDBAL(0), "RDBAL"},
+ {IXGBE_RDBAH(0), "RDBAH"},
+
+ /* TX Registers */
+ {IXGBE_TDBAL(0), "TDBAL"},
+ {IXGBE_TDBAH(0), "TDBAH"},
+ {IXGBE_TDLEN(0), "TDLEN"},
+ {IXGBE_TDH(0), "TDH"},
+ {IXGBE_TDT(0), "TDT"},
+ {IXGBE_TXDCTL(0), "TXDCTL"},
+
+ /* List Terminator */
+ {}
+};
+
+
+/*
+ * ixgbe_regdump - register printout routine
+ */
+static void ixgbe_regdump(struct ixgbe_hw *hw, struct ixgbe_reg_info *reginfo)
+{
+ int i = 0, j = 0;
+ char rname[16];
+ u32 regs[64];
+
+ switch (reginfo->ofs) {
+ case IXGBE_SRRCTL(0):
+ for (i = 0; i < 64; i++)
+ regs[i] = IXGBE_READ_REG(hw, IXGBE_SRRCTL(i));
+ break;
+ case IXGBE_DCA_RXCTRL(0):
+ for (i = 0; i < 64; i++)
+ regs[i] = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i));
+ break;
+ case IXGBE_RDLEN(0):
+ for (i = 0; i < 64; i++)
+ regs[i] = IXGBE_READ_REG(hw, IXGBE_RDLEN(i));
+ break;
+ case IXGBE_RDH(0):
+ for (i = 0; i < 64; i++)
+ regs[i] = IXGBE_READ_REG(hw, IXGBE_RDH(i));
+ break;
+ case IXGBE_RDT(0):
+ for (i = 0; i < 64; i++)
+ regs[i] = IXGBE_READ_REG(hw, IXGBE_RDT(i));
+ break;
+ case IXGBE_RXDCTL(0):
+ for (i = 0; i < 64; i++)
+ regs[i] = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i));
+ break;
+ case IXGBE_RDBAL(0):
+ for (i = 0; i < 64; i++)
+ regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAL(i));
+ break;
+ case IXGBE_RDBAH(0):
+ for (i = 0; i < 64; i++)
+ regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAH(i));
+ break;
+ case IXGBE_TDBAL(0):
+ for (i = 0; i < 64; i++)
+ regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAL(i));
+ break;
+ case IXGBE_TDBAH(0):
+ for (i = 0; i < 64; i++)
+ regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAH(i));
+ break;
+ case IXGBE_TDLEN(0):
+ for (i = 0; i < 64; i++)
+ regs[i] = IXGBE_READ_REG(hw, IXGBE_TDLEN(i));
+ break;
+ case IXGBE_TDH(0):
+ for (i = 0; i < 64; i++)
+ regs[i] = IXGBE_READ_REG(hw, IXGBE_TDH(i));
+ break;
+ case IXGBE_TDT(0):
+ for (i = 0; i < 64; i++)
+ regs[i] = IXGBE_READ_REG(hw, IXGBE_TDT(i));
+ break;
+ case IXGBE_TXDCTL(0):
+ for (i = 0; i < 64; i++)
+ regs[i] = IXGBE_READ_REG(hw, IXGBE_TXDCTL(i));
+ break;
+ default:
+ pr_info("%-15s %08x\n", reginfo->name,
+ IXGBE_READ_REG(hw, reginfo->ofs));
+ return;
+ }
+
+ for (i = 0; i < 8; i++) {
+ snprintf(rname, 16, "%s[%d-%d]", reginfo->name, i*8, i*8+7);
+ pr_err("%-15s", rname);
+ for (j = 0; j < 8; j++)
+ pr_cont(" %08x", regs[i*8+j]);
+ pr_cont("\n");
+ }
+
+}
+
+/*
+ * ixgbe_dump - Print registers, tx-rings and rx-rings
+ */
+static void ixgbe_dump(struct ixgbe_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ struct ixgbe_hw *hw = &adapter->hw;
+ struct ixgbe_reg_info *reginfo;
+ int n = 0;
+ struct ixgbe_ring *tx_ring;
+ struct ixgbe_tx_buffer *tx_buffer_info;
+ union ixgbe_adv_tx_desc *tx_desc;
+ struct my_u0 { u64 a; u64 b; } *u0;
+ struct ixgbe_ring *rx_ring;
+ union ixgbe_adv_rx_desc *rx_desc;
+ struct ixgbe_rx_buffer *rx_buffer_info;
+ u32 staterr;
+ int i = 0;
+
+ if (!netif_msg_hw(adapter))
+ return;
+
+ /* Print netdevice Info */
+ if (netdev) {
+ dev_info(&adapter->pdev->dev, "Net device Info\n");
+ pr_info("Device Name state "
+ "trans_start last_rx\n");
+ pr_info("%-15s %016lX %016lX %016lX\n",
+ netdev->name,
+ netdev->state,
+ netdev->trans_start,
+ netdev->last_rx);
+ }
+
+ /* Print Registers */
+ dev_info(&adapter->pdev->dev, "Register Dump\n");
+ pr_info(" Register Name Value\n");
+ for (reginfo = (struct ixgbe_reg_info *)ixgbe_reg_info_tbl;
+ reginfo->name; reginfo++) {
+ ixgbe_regdump(hw, reginfo);
+ }
+
+ /* Print TX Ring Summary */
+ if (!netdev || !netif_running(netdev))
+ goto exit;
+
+ dev_info(&adapter->pdev->dev, "TX Rings Summary\n");
+ pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n");
+ for (n = 0; n < adapter->num_tx_queues; n++) {
+ tx_ring = adapter->tx_ring[n];
+ tx_buffer_info =
+ &tx_ring->tx_buffer_info[tx_ring->next_to_clean];
+ pr_info(" %5d %5X %5X %016llX %04X %3X %016llX\n",
+ n, tx_ring->next_to_use, tx_ring->next_to_clean,
+ (u64)tx_buffer_info->dma,
+ tx_buffer_info->length,
+ tx_buffer_info->next_to_watch,
+ (u64)tx_buffer_info->time_stamp);
+ }
+
+ /* Print TX Rings */
+ if (!netif_msg_tx_done(adapter))
+ goto rx_ring_summary;
+
+ dev_info(&adapter->pdev->dev, "TX Rings Dump\n");
+
+ /* Transmit Descriptor Formats
+ *
+ * Advanced Transmit Descriptor
+ * +--------------------------------------------------------------+
+ * 0 | Buffer Address [63:0] |
+ * +--------------------------------------------------------------+
+ * 8 | PAYLEN | PORTS | IDX | STA | DCMD |DTYP | RSV | DTALEN |
+ * +--------------------------------------------------------------+
+ * 63 46 45 40 39 36 35 32 31 24 23 20 19 0
+ */
+
+ for (n = 0; n < adapter->num_tx_queues; n++) {
+ tx_ring = adapter->tx_ring[n];
+ pr_info("------------------------------------\n");
+ pr_info("TX QUEUE INDEX = %d\n", tx_ring->queue_index);
+ pr_info("------------------------------------\n");
+ pr_info("T [desc] [address 63:0 ] "
+ "[PlPOIdStDDt Ln] [bi->dma ] "
+ "leng ntw timestamp bi->skb\n");
+
+ for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) {
+ tx_desc = IXGBE_TX_DESC_ADV(tx_ring, i);
+ tx_buffer_info = &tx_ring->tx_buffer_info[i];
+ u0 = (struct my_u0 *)tx_desc;
+ pr_info("T [0x%03X] %016llX %016llX %016llX"
+ " %04X %3X %016llX %p", i,
+ le64_to_cpu(u0->a),
+ le64_to_cpu(u0->b),
+ (u64)tx_buffer_info->dma,
+ tx_buffer_info->length,
+ tx_buffer_info->next_to_watch,
+ (u64)tx_buffer_info->time_stamp,
+ tx_buffer_info->skb);
+ if (i == tx_ring->next_to_use &&
+ i == tx_ring->next_to_clean)
+ pr_cont(" NTC/U\n");
+ else if (i == tx_ring->next_to_use)
+ pr_cont(" NTU\n");
+ else if (i == tx_ring->next_to_clean)
+ pr_cont(" NTC\n");
+ else
+ pr_cont("\n");
+
+ if (netif_msg_pktdata(adapter) &&
+ tx_buffer_info->dma != 0)
+ print_hex_dump(KERN_INFO, "",
+ DUMP_PREFIX_ADDRESS, 16, 1,
+ phys_to_virt(tx_buffer_info->dma),
+ tx_buffer_info->length, true);
+ }
+ }
+
+ /* Print RX Rings Summary */
+rx_ring_summary:
+ dev_info(&adapter->pdev->dev, "RX Rings Summary\n");
+ pr_info("Queue [NTU] [NTC]\n");
+ for (n = 0; n < adapter->num_rx_queues; n++) {
+ rx_ring = adapter->rx_ring[n];
+ pr_info("%5d %5X %5X\n",
+ n, rx_ring->next_to_use, rx_ring->next_to_clean);
+ }
+
+ /* Print RX Rings */
+ if (!netif_msg_rx_status(adapter))
+ goto exit;
+
+ dev_info(&adapter->pdev->dev, "RX Rings Dump\n");
+
+ /* Advanced Receive Descriptor (Read) Format
+ * 63 1 0
+ * +-----------------------------------------------------+
+ * 0 | Packet Buffer Address [63:1] |A0/NSE|
+ * +----------------------------------------------+------+
+ * 8 | Header Buffer Address [63:1] | DD |
+ * +-----------------------------------------------------+
+ *
+ *
+ * Advanced Receive Descriptor (Write-Back) Format
+ *
+ * 63 48 47 32 31 30 21 20 16 15 4 3 0
+ * +------------------------------------------------------+
+ * 0 | Packet IP |SPH| HDR_LEN | RSV|Packet| RSS |
+ * | Checksum Ident | | | | Type | Type |
+ * +------------------------------------------------------+
+ * 8 | VLAN Tag | Length | Extended Error | Extended Status |
+ * +------------------------------------------------------+
+ * 63 48 47 32 31 20 19 0
+ */
+ for (n = 0; n < adapter->num_rx_queues; n++) {
+ rx_ring = adapter->rx_ring[n];
+ pr_info("------------------------------------\n");
+ pr_info("RX QUEUE INDEX = %d\n", rx_ring->queue_index);
+ pr_info("------------------------------------\n");
+ pr_info("R [desc] [ PktBuf A0] "
+ "[ HeadBuf DD] [bi->dma ] [bi->skb] "
+ "<-- Adv Rx Read format\n");
+ pr_info("RWB[desc] [PcsmIpSHl PtRs] "
+ "[vl er S cks ln] ---------------- [bi->skb] "
+ "<-- Adv Rx Write-Back format\n");
+
+ for (i = 0; i < rx_ring->count; i++) {
+ rx_buffer_info = &rx_ring->rx_buffer_info[i];
+ rx_desc = IXGBE_RX_DESC_ADV(rx_ring, i);
+ u0 = (struct my_u0 *)rx_desc;
+ staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
+ if (staterr & IXGBE_RXD_STAT_DD) {
+ /* Descriptor Done */
+ pr_info("RWB[0x%03X] %016llX "
+ "%016llX ---------------- %p", i,
+ le64_to_cpu(u0->a),
+ le64_to_cpu(u0->b),
+ rx_buffer_info->skb);
+ } else {
+ pr_info("R [0x%03X] %016llX "
+ "%016llX %016llX %p", i,
+ le64_to_cpu(u0->a),
+ le64_to_cpu(u0->b),
+ (u64)rx_buffer_info->dma,
+ rx_buffer_info->skb);
+
+ if (netif_msg_pktdata(adapter)) {
+ print_hex_dump(KERN_INFO, "",
+ DUMP_PREFIX_ADDRESS, 16, 1,
+ phys_to_virt(rx_buffer_info->dma),
+ rx_ring->rx_buf_len, true);
+
+ if (rx_ring->rx_buf_len
+ < IXGBE_RXBUFFER_2048)
+ print_hex_dump(KERN_INFO, "",
+ DUMP_PREFIX_ADDRESS, 16, 1,
+ phys_to_virt(
+ rx_buffer_info->page_dma +
+ rx_buffer_info->page_offset
+ ),
+ PAGE_SIZE/2, true);
+ }
+ }
+
+ if (i == rx_ring->next_to_use)
+ pr_cont(" NTU\n");
+ else if (i == rx_ring->next_to_clean)
+ pr_cont(" NTC\n");
+ else
+ pr_cont("\n");
+
+ }
+ }
+
+exit:
+ return;
+}
+
+static void ixgbe_release_hw_control(struct ixgbe_adapter *adapter)
+{
+ u32 ctrl_ext;
+
+ /* Let firmware take over control of h/w */
+ ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT);
+ IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT,
+ ctrl_ext & ~IXGBE_CTRL_EXT_DRV_LOAD);
+}
+
+static void ixgbe_get_hw_control(struct ixgbe_adapter *adapter)
+{
+ u32 ctrl_ext;
+
+ /* Let firmware know the driver has taken over */
+ ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT);
+ IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT,
+ ctrl_ext | IXGBE_CTRL_EXT_DRV_LOAD);
+}
+
+/*
+ * ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors
+ * @adapter: pointer to adapter struct
+ * @direction: 0 for Rx, 1 for Tx, -1 for other causes
+ * @queue: queue to map the corresponding interrupt to
+ * @msix_vector: the vector to map to the corresponding queue
+ *
+ */
+static void ixgbe_set_ivar(struct ixgbe_adapter *adapter, s8 direction,
+ u8 queue, u8 msix_vector)
+{
+ u32 ivar, index;
+ struct ixgbe_hw *hw = &adapter->hw;
+ switch (hw->mac.type) {
+ case ixgbe_mac_82598EB:
+ msix_vector |= IXGBE_IVAR_ALLOC_VAL;
+ if (direction == -1)
+ direction = 0;
+ index = (((direction * 64) + queue) >> 2) & 0x1F;
+ ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(index));
+ ivar &= ~(0xFF << (8 * (queue & 0x3)));
+ ivar |= (msix_vector << (8 * (queue & 0x3)));
+ IXGBE_WRITE_REG(hw, IXGBE_IVAR(index), ivar);
+ break;
+ case ixgbe_mac_82599EB:
+ case ixgbe_mac_X540:
+ if (direction == -1) {
+ /* other causes */
+ msix_vector |= IXGBE_IVAR_ALLOC_VAL;
+ index = ((queue & 1) * 8);
+ ivar = IXGBE_READ_REG(&adapter->hw, IXGBE_IVAR_MISC);
+ ivar &= ~(0xFF << index);
+ ivar |= (msix_vector << index);
+ IXGBE_WRITE_REG(&adapter->hw, IXGBE_IVAR_MISC, ivar);
+ break;
+ } else {
+ /* tx or rx causes */
+ msix_vector |= IXGBE_IVAR_ALLOC_VAL;
+ index = ((16 * (queue & 1)) + (8 * direction));
+ ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(queue >> 1));
+ ivar &= ~(0xFF << index);
+ ivar |= (msix_vector << index);
+ IXGBE_WRITE_REG(hw, IXGBE_IVAR(queue >> 1), ivar);
+ break;
+ }
+ default:
+ break;
+ }
+}
+
+static inline void ixgbe_irq_rearm_queues(struct ixgbe_adapter *adapter,
+ u64 qmask)
+{
+ u32 mask;
+
+ switch (adapter->hw.mac.type) {
+ case ixgbe_mac_82598EB:
+ mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
+ IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS, mask);
+ break;
+ case ixgbe_mac_82599EB:
+ case ixgbe_mac_X540:
+ mask = (qmask & 0xFFFFFFFF);
+ IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(0), mask);
+ mask = (qmask >> 32);
+ IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(1), mask);
+ break;
+ default:
+ break;
+ }
+}
+
+void ixgbe_unmap_and_free_tx_resource(struct ixgbe_ring *tx_ring,
+ struct ixgbe_tx_buffer *tx_buffer_info)
+{
+ if (tx_buffer_info->dma) {
+ if (tx_buffer_info->mapped_as_page)
+ dma_unmap_page(tx_ring->dev,
+ tx_buffer_info->dma,
+ tx_buffer_info->length,
+ DMA_TO_DEVICE);
+ else
+ dma_unmap_single(tx_ring->dev,
+ tx_buffer_info->dma,
+ tx_buffer_info->length,
+ DMA_TO_DEVICE);
+ tx_buffer_info->dma = 0;
+ }
+ if (tx_buffer_info->skb) {
+ dev_kfree_skb_any(tx_buffer_info->skb);
+ tx_buffer_info->skb = NULL;
+ }
+ tx_buffer_info->time_stamp = 0;
+ /* tx_buffer_info must be completely set up in the transmit path */
+}
+
+static void ixgbe_update_xoff_received(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ struct ixgbe_hw_stats *hwstats = &adapter->stats;
+ u32 data = 0;
+ u32 xoff[8] = {0};
+ int i;
+
+ if ((hw->fc.current_mode == ixgbe_fc_full) ||
+ (hw->fc.current_mode == ixgbe_fc_rx_pause)) {
+ switch (hw->mac.type) {
+ case ixgbe_mac_82598EB:
+ data = IXGBE_READ_REG(hw, IXGBE_LXOFFRXC);
+ break;
+ default:
+ data = IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT);
+ }
+ hwstats->lxoffrxc += data;
+
+ /* refill credits (no tx hang) if we received xoff */
+ if (!data)
+ return;
+
+ for (i = 0; i < adapter->num_tx_queues; i++)
+ clear_bit(__IXGBE_HANG_CHECK_ARMED,
+ &adapter->tx_ring[i]->state);
+ return;
+ } else if (!(adapter->dcb_cfg.pfc_mode_enable))
+ return;
+
+ /* update stats for each tc, only valid with PFC enabled */
+ for (i = 0; i < MAX_TX_PACKET_BUFFERS; i++) {
+ switch (hw->mac.type) {
+ case ixgbe_mac_82598EB:
+ xoff[i] = IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i));
+ break;
+ default:
+ xoff[i] = IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i));
+ }
+ hwstats->pxoffrxc[i] += xoff[i];
+ }
+
+ /* disarm tx queues that have received xoff frames */
+ for (i = 0; i < adapter->num_tx_queues; i++) {
+ struct ixgbe_ring *tx_ring = adapter->tx_ring[i];
+ u8 tc = tx_ring->dcb_tc;
+
+ if (xoff[tc])
+ clear_bit(__IXGBE_HANG_CHECK_ARMED, &tx_ring->state);
+ }
+}
+
+static u64 ixgbe_get_tx_completed(struct ixgbe_ring *ring)
+{
+ return ring->tx_stats.completed;
+}
+
+static u64 ixgbe_get_tx_pending(struct ixgbe_ring *ring)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(ring->netdev);
+ struct ixgbe_hw *hw = &adapter->hw;
+
+ u32 head = IXGBE_READ_REG(hw, IXGBE_TDH(ring->reg_idx));
+ u32 tail = IXGBE_READ_REG(hw, IXGBE_TDT(ring->reg_idx));
+
+ if (head != tail)
+ return (head < tail) ?
+ tail - head : (tail + ring->count - head);
+
+ return 0;
+}
+
+static inline bool ixgbe_check_tx_hang(struct ixgbe_ring *tx_ring)
+{
+ u32 tx_done = ixgbe_get_tx_completed(tx_ring);
+ u32 tx_done_old = tx_ring->tx_stats.tx_done_old;
+ u32 tx_pending = ixgbe_get_tx_pending(tx_ring);
+ bool ret = false;
+
+ clear_check_for_tx_hang(tx_ring);
+
+ /*
+ * Check for a hung queue, but be thorough. This verifies
+ * that a transmit has been completed since the previous
+ * check AND there is at least one packet pending. The
+ * ARMED bit is set to indicate a potential hang. The
+ * bit is cleared if a pause frame is received to remove
+ * false hang detection due to PFC or 802.3x frames. By
+ * requiring this to fail twice we avoid races with
+ * pfc clearing the ARMED bit and conditions where we
+ * run the check_tx_hang logic with a transmit completion
+ * pending but without time to complete it yet.
+ */
+ if ((tx_done_old == tx_done) && tx_pending) {
+ /* make sure it is true for two checks in a row */
+ ret = test_and_set_bit(__IXGBE_HANG_CHECK_ARMED,
+ &tx_ring->state);
+ } else {
+ /* update completed stats and continue */
+ tx_ring->tx_stats.tx_done_old = tx_done;
+ /* reset the countdown */
+ clear_bit(__IXGBE_HANG_CHECK_ARMED, &tx_ring->state);
+ }
+
+ return ret;
+}
+
+/**
+ * ixgbe_tx_timeout_reset - initiate reset due to Tx timeout
+ * @adapter: driver private struct
+ **/
+static void ixgbe_tx_timeout_reset(struct ixgbe_adapter *adapter)
+{
+
+ /* Do the reset outside of interrupt context */
+ if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
+ adapter->flags2 |= IXGBE_FLAG2_RESET_REQUESTED;
+ ixgbe_service_event_schedule(adapter);
+ }
+}
+
+/**
+ * ixgbe_clean_tx_irq - Reclaim resources after transmit completes
+ * @q_vector: structure containing interrupt and ring information
+ * @tx_ring: tx ring to clean
+ **/
+static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector *q_vector,
+ struct ixgbe_ring *tx_ring)
+{
+ struct ixgbe_adapter *adapter = q_vector->adapter;
+ union ixgbe_adv_tx_desc *tx_desc, *eop_desc;
+ struct ixgbe_tx_buffer *tx_buffer_info;
+ unsigned int total_bytes = 0, total_packets = 0;
+ u16 i, eop, count = 0;
+
+ i = tx_ring->next_to_clean;
+ eop = tx_ring->tx_buffer_info[i].next_to_watch;
+ eop_desc = IXGBE_TX_DESC_ADV(tx_ring, eop);
+
+ while ((eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD)) &&
+ (count < q_vector->tx.work_limit)) {
+ bool cleaned = false;
+ rmb(); /* read buffer_info after eop_desc */
+ for ( ; !cleaned; count++) {
+ tx_desc = IXGBE_TX_DESC_ADV(tx_ring, i);
+ tx_buffer_info = &tx_ring->tx_buffer_info[i];
+
+ tx_desc->wb.status = 0;
+ cleaned = (i == eop);
+
+ i++;
+ if (i == tx_ring->count)
+ i = 0;
+
+ if (cleaned && tx_buffer_info->skb) {
+ total_bytes += tx_buffer_info->bytecount;
+ total_packets += tx_buffer_info->gso_segs;
+ }
+
+ ixgbe_unmap_and_free_tx_resource(tx_ring,
+ tx_buffer_info);
+ }
+
+ tx_ring->tx_stats.completed++;
+ eop = tx_ring->tx_buffer_info[i].next_to_watch;
+ eop_desc = IXGBE_TX_DESC_ADV(tx_ring, eop);
+ }
+
+ tx_ring->next_to_clean = i;
+ tx_ring->stats.bytes += total_bytes;
+ tx_ring->stats.packets += total_packets;
+ u64_stats_update_begin(&tx_ring->syncp);
+ q_vector->tx.total_bytes += total_bytes;
+ q_vector->tx.total_packets += total_packets;
+ u64_stats_update_end(&tx_ring->syncp);
+
+ if (check_for_tx_hang(tx_ring) && ixgbe_check_tx_hang(tx_ring)) {
+ /* schedule immediate reset if we believe we hung */
+ struct ixgbe_hw *hw = &adapter->hw;
+ tx_desc = IXGBE_TX_DESC_ADV(tx_ring, eop);
+ e_err(drv, "Detected Tx Unit Hang\n"
+ " Tx Queue <%d>\n"
+ " TDH, TDT <%x>, <%x>\n"
+ " next_to_use <%x>\n"
+ " next_to_clean <%x>\n"
+ "tx_buffer_info[next_to_clean]\n"
+ " time_stamp <%lx>\n"
+ " jiffies <%lx>\n",
+ tx_ring->queue_index,
+ IXGBE_READ_REG(hw, IXGBE_TDH(tx_ring->reg_idx)),
+ IXGBE_READ_REG(hw, IXGBE_TDT(tx_ring->reg_idx)),
+ tx_ring->next_to_use, eop,
+ tx_ring->tx_buffer_info[eop].time_stamp, jiffies);
+
+ netif_stop_subqueue(tx_ring->netdev, tx_ring->queue_index);
+
+ e_info(probe,
+ "tx hang %d detected on queue %d, resetting adapter\n",
+ adapter->tx_timeout_count + 1, tx_ring->queue_index);
+
+ /* schedule immediate reset if we believe we hung */
+ ixgbe_tx_timeout_reset(adapter);
+
+ /* the adapter is about to reset, no point in enabling stuff */
+ return true;
+ }
+
+#define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
+ if (unlikely(count && netif_carrier_ok(tx_ring->netdev) &&
+ (ixgbe_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD))) {
+ /* Make sure that anybody stopping the queue after this
+ * sees the new next_to_clean.
+ */
+ smp_mb();
+ if (__netif_subqueue_stopped(tx_ring->netdev, tx_ring->queue_index) &&
+ !test_bit(__IXGBE_DOWN, &adapter->state)) {
+ netif_wake_subqueue(tx_ring->netdev, tx_ring->queue_index);
+ ++tx_ring->tx_stats.restart_queue;
+ }
+ }
+
+ return count < q_vector->tx.work_limit;
+}
+
+#ifdef CONFIG_IXGBE_DCA
+static void ixgbe_update_rx_dca(struct ixgbe_adapter *adapter,
+ struct ixgbe_ring *rx_ring,
+ int cpu)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ u32 rxctrl;
+ u8 reg_idx = rx_ring->reg_idx;
+
+ rxctrl = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(reg_idx));
+ switch (hw->mac.type) {
+ case ixgbe_mac_82598EB:
+ rxctrl &= ~IXGBE_DCA_RXCTRL_CPUID_MASK;
+ rxctrl |= dca3_get_tag(&adapter->pdev->dev, cpu);
+ break;
+ case ixgbe_mac_82599EB:
+ case ixgbe_mac_X540:
+ rxctrl &= ~IXGBE_DCA_RXCTRL_CPUID_MASK_82599;
+ rxctrl |= (dca3_get_tag(&adapter->pdev->dev, cpu) <<
+ IXGBE_DCA_RXCTRL_CPUID_SHIFT_82599);
+ break;
+ default:
+ break;
+ }
+ rxctrl |= IXGBE_DCA_RXCTRL_DESC_DCA_EN;
+ rxctrl |= IXGBE_DCA_RXCTRL_HEAD_DCA_EN;
+ rxctrl &= ~(IXGBE_DCA_RXCTRL_DESC_RRO_EN);
+ IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(reg_idx), rxctrl);
+}
+
+static void ixgbe_update_tx_dca(struct ixgbe_adapter *adapter,
+ struct ixgbe_ring *tx_ring,
+ int cpu)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ u32 txctrl;
+ u8 reg_idx = tx_ring->reg_idx;
+
+ switch (hw->mac.type) {
+ case ixgbe_mac_82598EB:
+ txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL(reg_idx));
+ txctrl &= ~IXGBE_DCA_TXCTRL_CPUID_MASK;
+ txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu);
+ txctrl |= IXGBE_DCA_TXCTRL_DESC_DCA_EN;
+ IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL(reg_idx), txctrl);
+ break;
+ case ixgbe_mac_82599EB:
+ case ixgbe_mac_X540:
+ txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL_82599(reg_idx));
+ txctrl &= ~IXGBE_DCA_TXCTRL_CPUID_MASK_82599;
+ txctrl |= (dca3_get_tag(&adapter->pdev->dev, cpu) <<
+ IXGBE_DCA_TXCTRL_CPUID_SHIFT_82599);
+ txctrl |= IXGBE_DCA_TXCTRL_DESC_DCA_EN;
+ IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(reg_idx), txctrl);
+ break;
+ default:
+ break;
+ }
+}
+
+static void ixgbe_update_dca(struct ixgbe_q_vector *q_vector)
+{
+ struct ixgbe_adapter *adapter = q_vector->adapter;
+ int cpu = get_cpu();
+ long r_idx;
+ int i;
+
+ if (q_vector->cpu == cpu)
+ goto out_no_update;
+
+ r_idx = find_first_bit(q_vector->tx.idx, adapter->num_tx_queues);
+ for (i = 0; i < q_vector->tx.count; i++) {
+ ixgbe_update_tx_dca(adapter, adapter->tx_ring[r_idx], cpu);
+ r_idx = find_next_bit(q_vector->tx.idx, adapter->num_tx_queues,
+ r_idx + 1);
+ }
+
+ r_idx = find_first_bit(q_vector->rx.idx, adapter->num_rx_queues);
+ for (i = 0; i < q_vector->rx.count; i++) {
+ ixgbe_update_rx_dca(adapter, adapter->rx_ring[r_idx], cpu);
+ r_idx = find_next_bit(q_vector->rx.idx, adapter->num_rx_queues,
+ r_idx + 1);
+ }
+
+ q_vector->cpu = cpu;
+out_no_update:
+ put_cpu();
+}
+
+static void ixgbe_setup_dca(struct ixgbe_adapter *adapter)
+{
+ int num_q_vectors;
+ int i;
+
+ if (!(adapter->flags & IXGBE_FLAG_DCA_ENABLED))
+ return;
+
+ /* always use CB2 mode, difference is masked in the CB driver */
+ IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 2);
+
+ if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
+ num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
+ else
+ num_q_vectors = 1;
+
+ for (i = 0; i < num_q_vectors; i++) {
+ adapter->q_vector[i]->cpu = -1;
+ ixgbe_update_dca(adapter->q_vector[i]);
+ }
+}
+
+static int __ixgbe_notify_dca(struct device *dev, void *data)
+{
+ struct ixgbe_adapter *adapter = dev_get_drvdata(dev);
+ unsigned long event = *(unsigned long *)data;
+
+ if (!(adapter->flags & IXGBE_FLAG_DCA_CAPABLE))
+ return 0;
+
+ switch (event) {
+ case DCA_PROVIDER_ADD:
+ /* if we're already enabled, don't do it again */
+ if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
+ break;
+ if (dca_add_requester(dev) == 0) {
+ adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
+ ixgbe_setup_dca(adapter);
+ break;
+ }
+ /* Fall Through since DCA is disabled. */
+ case DCA_PROVIDER_REMOVE:
+ if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
+ dca_remove_requester(dev);
+ adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED;
+ IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1);
+ }
+ break;
+ }
+
+ return 0;
+}
+#endif /* CONFIG_IXGBE_DCA */
+
+static inline void ixgbe_rx_hash(union ixgbe_adv_rx_desc *rx_desc,
+ struct sk_buff *skb)
+{
+ skb->rxhash = le32_to_cpu(rx_desc->wb.lower.hi_dword.rss);
+}
+
+/**
+ * ixgbe_rx_is_fcoe - check the rx desc for incoming pkt type
+ * @adapter: address of board private structure
+ * @rx_desc: advanced rx descriptor
+ *
+ * Returns : true if it is FCoE pkt
+ */
+static inline bool ixgbe_rx_is_fcoe(struct ixgbe_adapter *adapter,
+ union ixgbe_adv_rx_desc *rx_desc)
+{
+ __le16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
+
+ return (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) &&
+ ((pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_ETQF_MASK)) ==
+ (cpu_to_le16(IXGBE_ETQF_FILTER_FCOE <<
+ IXGBE_RXDADV_PKTTYPE_ETQF_SHIFT)));
+}
+
+/**
+ * ixgbe_receive_skb - Send a completed packet up the stack
+ * @adapter: board private structure
+ * @skb: packet to send up
+ * @status: hardware indication of status of receive
+ * @rx_ring: rx descriptor ring (for a specific queue) to setup
+ * @rx_desc: rx descriptor
+ **/
+static void ixgbe_receive_skb(struct ixgbe_q_vector *q_vector,
+ struct sk_buff *skb, u8 status,
+ struct ixgbe_ring *ring,
+ union ixgbe_adv_rx_desc *rx_desc)
+{
+ struct ixgbe_adapter *adapter = q_vector->adapter;
+ struct napi_struct *napi = &q_vector->napi;
+ bool is_vlan = (status & IXGBE_RXD_STAT_VP);
+ u16 tag = le16_to_cpu(rx_desc->wb.upper.vlan);
+
+ if (is_vlan && (tag & VLAN_VID_MASK))
+ __vlan_hwaccel_put_tag(skb, tag);
+
+ if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL))
+ napi_gro_receive(napi, skb);
+ else
+ netif_rx(skb);
+}
+
+/**
+ * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum
+ * @adapter: address of board private structure
+ * @status_err: hardware indication of status of receive
+ * @skb: skb currently being received and modified
+ * @status_err: status error value of last descriptor in packet
+ **/
+static inline void ixgbe_rx_checksum(struct ixgbe_adapter *adapter,
+ union ixgbe_adv_rx_desc *rx_desc,
+ struct sk_buff *skb,
+ u32 status_err)
+{
+ skb->ip_summed = CHECKSUM_NONE;
+
+ /* Rx csum disabled */
+ if (!(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED))
+ return;
+
+ /* if IP and error */
+ if ((status_err & IXGBE_RXD_STAT_IPCS) &&
+ (status_err & IXGBE_RXDADV_ERR_IPE)) {
+ adapter->hw_csum_rx_error++;
+ return;
+ }
+
+ if (!(status_err & IXGBE_RXD_STAT_L4CS))
+ return;
+
+ if (status_err & IXGBE_RXDADV_ERR_TCPE) {
+ u16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
+
+ /*
+ * 82599 errata, UDP frames with a 0 checksum can be marked as
+ * checksum errors.
+ */
+ if ((pkt_info & IXGBE_RXDADV_PKTTYPE_UDP) &&
+ (adapter->hw.mac.type == ixgbe_mac_82599EB))
+ return;
+
+ adapter->hw_csum_rx_error++;
+ return;
+ }
+
+ /* It must be a TCP or UDP packet with a valid checksum */
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+}
+
+static inline void ixgbe_release_rx_desc(struct ixgbe_ring *rx_ring, u32 val)
+{
+ /*
+ * Force memory writes to complete before letting h/w
+ * know there are new descriptors to fetch. (Only
+ * applicable for weak-ordered memory model archs,
+ * such as IA-64).
+ */
+ wmb();
+ writel(val, rx_ring->tail);
+}
+
+/**
+ * ixgbe_alloc_rx_buffers - Replace used receive buffers; packet split
+ * @rx_ring: ring to place buffers on
+ * @cleaned_count: number of buffers to replace
+ **/
+void ixgbe_alloc_rx_buffers(struct ixgbe_ring *rx_ring, u16 cleaned_count)
+{
+ union ixgbe_adv_rx_desc *rx_desc;
+ struct ixgbe_rx_buffer *bi;
+ struct sk_buff *skb;
+ u16 i = rx_ring->next_to_use;
+
+ /* do nothing if no valid netdev defined */
+ if (!rx_ring->netdev)
+ return;
+
+ while (cleaned_count--) {
+ rx_desc = IXGBE_RX_DESC_ADV(rx_ring, i);
+ bi = &rx_ring->rx_buffer_info[i];
+ skb = bi->skb;
+
+ if (!skb) {
+ skb = netdev_alloc_skb_ip_align(rx_ring->netdev,
+ rx_ring->rx_buf_len);
+ if (!skb) {
+ rx_ring->rx_stats.alloc_rx_buff_failed++;
+ goto no_buffers;
+ }
+ /* initialize queue mapping */
+ skb_record_rx_queue(skb, rx_ring->queue_index);
+ bi->skb = skb;
+ }
+
+ if (!bi->dma) {
+ bi->dma = dma_map_single(rx_ring->dev,
+ skb->data,
+ rx_ring->rx_buf_len,
+ DMA_FROM_DEVICE);
+ if (dma_mapping_error(rx_ring->dev, bi->dma)) {
+ rx_ring->rx_stats.alloc_rx_buff_failed++;
+ bi->dma = 0;
+ goto no_buffers;
+ }
+ }
+
+ if (ring_is_ps_enabled(rx_ring)) {
+ if (!bi->page) {
+ bi->page = netdev_alloc_page(rx_ring->netdev);
+ if (!bi->page) {
+ rx_ring->rx_stats.alloc_rx_page_failed++;
+ goto no_buffers;
+ }
+ }
+
+ if (!bi->page_dma) {
+ /* use a half page if we're re-using */
+ bi->page_offset ^= PAGE_SIZE / 2;
+ bi->page_dma = dma_map_page(rx_ring->dev,
+ bi->page,
+ bi->page_offset,
+ PAGE_SIZE / 2,
+ DMA_FROM_DEVICE);
+ if (dma_mapping_error(rx_ring->dev,
+ bi->page_dma)) {
+ rx_ring->rx_stats.alloc_rx_page_failed++;
+ bi->page_dma = 0;
+ goto no_buffers;
+ }
+ }
+
+ /* Refresh the desc even if buffer_addrs didn't change
+ * because each write-back erases this info. */
+ rx_desc->read.pkt_addr = cpu_to_le64(bi->page_dma);
+ rx_desc->read.hdr_addr = cpu_to_le64(bi->dma);
+ } else {
+ rx_desc->read.pkt_addr = cpu_to_le64(bi->dma);
+ rx_desc->read.hdr_addr = 0;
+ }
+
+ i++;
+ if (i == rx_ring->count)
+ i = 0;
+ }
+
+no_buffers:
+ if (rx_ring->next_to_use != i) {
+ rx_ring->next_to_use = i;
+ ixgbe_release_rx_desc(rx_ring, i);
+ }
+}
+
+static inline u16 ixgbe_get_hlen(union ixgbe_adv_rx_desc *rx_desc)
+{
+ /* HW will not DMA in data larger than the given buffer, even if it
+ * parses the (NFS, of course) header to be larger. In that case, it
+ * fills the header buffer and spills the rest into the page.
+ */
+ u16 hdr_info = le16_to_cpu(rx_desc->wb.lower.lo_dword.hs_rss.hdr_info);
+ u16 hlen = (hdr_info & IXGBE_RXDADV_HDRBUFLEN_MASK) >>
+ IXGBE_RXDADV_HDRBUFLEN_SHIFT;
+ if (hlen > IXGBE_RX_HDR_SIZE)
+ hlen = IXGBE_RX_HDR_SIZE;
+ return hlen;
+}
+
+/**
+ * ixgbe_transform_rsc_queue - change rsc queue into a full packet
+ * @skb: pointer to the last skb in the rsc queue
+ *
+ * This function changes a queue full of hw rsc buffers into a completed
+ * packet. It uses the ->prev pointers to find the first packet and then
+ * turns it into the frag list owner.
+ **/
+static inline struct sk_buff *ixgbe_transform_rsc_queue(struct sk_buff *skb)
+{
+ unsigned int frag_list_size = 0;
+ unsigned int skb_cnt = 1;
+
+ while (skb->prev) {
+ struct sk_buff *prev = skb->prev;
+ frag_list_size += skb->len;
+ skb->prev = NULL;
+ skb = prev;
+ skb_cnt++;
+ }
+
+ skb_shinfo(skb)->frag_list = skb->next;
+ skb->next = NULL;
+ skb->len += frag_list_size;
+ skb->data_len += frag_list_size;
+ skb->truesize += frag_list_size;
+ IXGBE_RSC_CB(skb)->skb_cnt = skb_cnt;
+
+ return skb;
+}
+
+static inline bool ixgbe_get_rsc_state(union ixgbe_adv_rx_desc *rx_desc)
+{
+ return !!(le32_to_cpu(rx_desc->wb.lower.lo_dword.data) &
+ IXGBE_RXDADV_RSCCNT_MASK);
+}
+
+static void ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
+ struct ixgbe_ring *rx_ring,
+ int *work_done, int work_to_do)
+{
+ struct ixgbe_adapter *adapter = q_vector->adapter;
+ union ixgbe_adv_rx_desc *rx_desc, *next_rxd;
+ struct ixgbe_rx_buffer *rx_buffer_info, *next_buffer;
+ struct sk_buff *skb;
+ unsigned int total_rx_bytes = 0, total_rx_packets = 0;
+ const int current_node = numa_node_id();
+#ifdef IXGBE_FCOE
+ int ddp_bytes = 0;
+#endif /* IXGBE_FCOE */
+ u32 staterr;
+ u16 i;
+ u16 cleaned_count = 0;
+ bool pkt_is_rsc = false;
+
+ i = rx_ring->next_to_clean;
+ rx_desc = IXGBE_RX_DESC_ADV(rx_ring, i);
+ staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
+
+ while (staterr & IXGBE_RXD_STAT_DD) {
+ u32 upper_len = 0;
+
+ rmb(); /* read descriptor and rx_buffer_info after status DD */
+
+ rx_buffer_info = &rx_ring->rx_buffer_info[i];
+
+ skb = rx_buffer_info->skb;
+ rx_buffer_info->skb = NULL;
+ prefetch(skb->data);
+
+ if (ring_is_rsc_enabled(rx_ring))
+ pkt_is_rsc = ixgbe_get_rsc_state(rx_desc);
+
+ /* if this is a skb from previous receive DMA will be 0 */
+ if (rx_buffer_info->dma) {
+ u16 hlen;
+ if (pkt_is_rsc &&
+ !(staterr & IXGBE_RXD_STAT_EOP) &&
+ !skb->prev) {
+ /*
+ * When HWRSC is enabled, delay unmapping
+ * of the first packet. It carries the
+ * header information, HW may still
+ * access the header after the writeback.
+ * Only unmap it when EOP is reached
+ */
+ IXGBE_RSC_CB(skb)->delay_unmap = true;
+ IXGBE_RSC_CB(skb)->dma = rx_buffer_info->dma;
+ } else {
+ dma_unmap_single(rx_ring->dev,
+ rx_buffer_info->dma,
+ rx_ring->rx_buf_len,
+ DMA_FROM_DEVICE);
+ }
+ rx_buffer_info->dma = 0;
+
+ if (ring_is_ps_enabled(rx_ring)) {
+ hlen = ixgbe_get_hlen(rx_desc);
+ upper_len = le16_to_cpu(rx_desc->wb.upper.length);
+ } else {
+ hlen = le16_to_cpu(rx_desc->wb.upper.length);
+ }
+
+ skb_put(skb, hlen);
+ } else {
+ /* assume packet split since header is unmapped */
+ upper_len = le16_to_cpu(rx_desc->wb.upper.length);
+ }
+
+ if (upper_len) {
+ dma_unmap_page(rx_ring->dev,
+ rx_buffer_info->page_dma,
+ PAGE_SIZE / 2,
+ DMA_FROM_DEVICE);
+ rx_buffer_info->page_dma = 0;
+ skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags,
+ rx_buffer_info->page,
+ rx_buffer_info->page_offset,
+ upper_len);
+
+ if ((page_count(rx_buffer_info->page) == 1) &&
+ (page_to_nid(rx_buffer_info->page) == current_node))
+ get_page(rx_buffer_info->page);
+ else
+ rx_buffer_info->page = NULL;
+
+ skb->len += upper_len;
+ skb->data_len += upper_len;
+ skb->truesize += upper_len;
+ }
+
+ i++;
+ if (i == rx_ring->count)
+ i = 0;
+
+ next_rxd = IXGBE_RX_DESC_ADV(rx_ring, i);
+ prefetch(next_rxd);
+ cleaned_count++;
+
+ if (pkt_is_rsc) {
+ u32 nextp = (staterr & IXGBE_RXDADV_NEXTP_MASK) >>
+ IXGBE_RXDADV_NEXTP_SHIFT;
+ next_buffer = &rx_ring->rx_buffer_info[nextp];
+ } else {
+ next_buffer = &rx_ring->rx_buffer_info[i];
+ }
+
+ if (!(staterr & IXGBE_RXD_STAT_EOP)) {
+ if (ring_is_ps_enabled(rx_ring)) {
+ rx_buffer_info->skb = next_buffer->skb;
+ rx_buffer_info->dma = next_buffer->dma;
+ next_buffer->skb = skb;
+ next_buffer->dma = 0;
+ } else {
+ skb->next = next_buffer->skb;
+ skb->next->prev = skb;
+ }
+ rx_ring->rx_stats.non_eop_descs++;
+ goto next_desc;
+ }
+
+ if (skb->prev) {
+ skb = ixgbe_transform_rsc_queue(skb);
+ /* if we got here without RSC the packet is invalid */
+ if (!pkt_is_rsc) {
+ __pskb_trim(skb, 0);
+ rx_buffer_info->skb = skb;
+ goto next_desc;
+ }
+ }
+
+ if (ring_is_rsc_enabled(rx_ring)) {
+ if (IXGBE_RSC_CB(skb)->delay_unmap) {
+ dma_unmap_single(rx_ring->dev,
+ IXGBE_RSC_CB(skb)->dma,
+ rx_ring->rx_buf_len,
+ DMA_FROM_DEVICE);
+ IXGBE_RSC_CB(skb)->dma = 0;
+ IXGBE_RSC_CB(skb)->delay_unmap = false;
+ }
+ }
+ if (pkt_is_rsc) {
+ if (ring_is_ps_enabled(rx_ring))
+ rx_ring->rx_stats.rsc_count +=
+ skb_shinfo(skb)->nr_frags;
+ else
+ rx_ring->rx_stats.rsc_count +=
+ IXGBE_RSC_CB(skb)->skb_cnt;
+ rx_ring->rx_stats.rsc_flush++;
+ }
+
+ /* ERR_MASK will only have valid bits if EOP set */
+ if (unlikely(staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK)) {
+ dev_kfree_skb_any(skb);
+ goto next_desc;
+ }
+
+ ixgbe_rx_checksum(adapter, rx_desc, skb, staterr);
+ if (adapter->netdev->features & NETIF_F_RXHASH)
+ ixgbe_rx_hash(rx_desc, skb);
+
+ /* probably a little skewed due to removing CRC */
+ total_rx_bytes += skb->len;
+ total_rx_packets++;
+
+ skb->protocol = eth_type_trans(skb, rx_ring->netdev);
+#ifdef IXGBE_FCOE
+ /* if ddp, not passing to ULD unless for FCP_RSP or error */
+ if (ixgbe_rx_is_fcoe(adapter, rx_desc)) {
+ ddp_bytes = ixgbe_fcoe_ddp(adapter, rx_desc, skb,
+ staterr);
++ if (!ddp_bytes) {
++ dev_kfree_skb_any(skb);
+ goto next_desc;
++ }
+ }
+#endif /* IXGBE_FCOE */
+ ixgbe_receive_skb(q_vector, skb, staterr, rx_ring, rx_desc);
+
+next_desc:
+ rx_desc->wb.upper.status_error = 0;
+
+ (*work_done)++;
+ if (*work_done >= work_to_do)
+ break;
+
+ /* return some buffers to hardware, one at a time is too slow */
+ if (cleaned_count >= IXGBE_RX_BUFFER_WRITE) {
+ ixgbe_alloc_rx_buffers(rx_ring, cleaned_count);
+ cleaned_count = 0;
+ }
+
+ /* use prefetched values */
+ rx_desc = next_rxd;
+ staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
+ }
+
+ rx_ring->next_to_clean = i;
+ cleaned_count = ixgbe_desc_unused(rx_ring);
+
+ if (cleaned_count)
+ ixgbe_alloc_rx_buffers(rx_ring, cleaned_count);
+
+#ifdef IXGBE_FCOE
+ /* include DDPed FCoE data */
+ if (ddp_bytes > 0) {
+ unsigned int mss;
+
+ mss = rx_ring->netdev->mtu - sizeof(struct fcoe_hdr) -
+ sizeof(struct fc_frame_header) -
+ sizeof(struct fcoe_crc_eof);
+ if (mss > 512)
+ mss &= ~511;
+ total_rx_bytes += ddp_bytes;
+ total_rx_packets += DIV_ROUND_UP(ddp_bytes, mss);
+ }
+#endif /* IXGBE_FCOE */
+
+ u64_stats_update_begin(&rx_ring->syncp);
+ rx_ring->stats.packets += total_rx_packets;
+ rx_ring->stats.bytes += total_rx_bytes;
+ u64_stats_update_end(&rx_ring->syncp);
+ q_vector->rx.total_packets += total_rx_packets;
+ q_vector->rx.total_bytes += total_rx_bytes;
+}
+
+static int ixgbe_clean_rxonly(struct napi_struct *, int);
+/**
+ * ixgbe_configure_msix - Configure MSI-X hardware
+ * @adapter: board private structure
+ *
+ * ixgbe_configure_msix sets up the hardware to properly generate MSI-X
+ * interrupts.
+ **/
+static void ixgbe_configure_msix(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_q_vector *q_vector;
+ int i, q_vectors, v_idx, r_idx;
+ u32 mask;
+
+ q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
+
+ /*
+ * Populate the IVAR table and set the ITR values to the
+ * corresponding register.
+ */
+ for (v_idx = 0; v_idx < q_vectors; v_idx++) {
+ q_vector = adapter->q_vector[v_idx];
+ /* XXX for_each_set_bit(...) */
+ r_idx = find_first_bit(q_vector->rx.idx,
+ adapter->num_rx_queues);
+
+ for (i = 0; i < q_vector->rx.count; i++) {
+ u8 reg_idx = adapter->rx_ring[r_idx]->reg_idx;
+ ixgbe_set_ivar(adapter, 0, reg_idx, v_idx);
+ r_idx = find_next_bit(q_vector->rx.idx,
+ adapter->num_rx_queues,
+ r_idx + 1);
+ }
+ r_idx = find_first_bit(q_vector->tx.idx,
+ adapter->num_tx_queues);
+
+ for (i = 0; i < q_vector->tx.count; i++) {
+ u8 reg_idx = adapter->tx_ring[r_idx]->reg_idx;
+ ixgbe_set_ivar(adapter, 1, reg_idx, v_idx);
+ r_idx = find_next_bit(q_vector->tx.idx,
+ adapter->num_tx_queues,
+ r_idx + 1);
+ }
+
+ if (q_vector->tx.count && !q_vector->rx.count)
+ /* tx only */
+ q_vector->eitr = adapter->tx_eitr_param;
+ else if (q_vector->rx.count)
+ /* rx or mixed */
+ q_vector->eitr = adapter->rx_eitr_param;
+
+ ixgbe_write_eitr(q_vector);
+ /* If ATR is enabled, set interrupt affinity */
+ if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
+ /*
+ * Allocate the affinity_hint cpumask, assign the mask
+ * for this vector, and set our affinity_hint for
+ * this irq.
+ */
+ if (!alloc_cpumask_var(&q_vector->affinity_mask,
+ GFP_KERNEL))
+ return;
+ cpumask_set_cpu(v_idx, q_vector->affinity_mask);
+ irq_set_affinity_hint(adapter->msix_entries[v_idx].vector,
+ q_vector->affinity_mask);
+ }
+ }
+
+ switch (adapter->hw.mac.type) {
+ case ixgbe_mac_82598EB:
+ ixgbe_set_ivar(adapter, -1, IXGBE_IVAR_OTHER_CAUSES_INDEX,
+ v_idx);
+ break;
+ case ixgbe_mac_82599EB:
+ case ixgbe_mac_X540:
+ ixgbe_set_ivar(adapter, -1, 1, v_idx);
+ break;
+
+ default:
+ break;
+ }
+ IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), 1950);
+
+ /* set up to autoclear timer, and the vectors */
+ mask = IXGBE_EIMS_ENABLE_MASK;
+ if (adapter->num_vfs)
+ mask &= ~(IXGBE_EIMS_OTHER |
+ IXGBE_EIMS_MAILBOX |
+ IXGBE_EIMS_LSC);
+ else
+ mask &= ~(IXGBE_EIMS_OTHER | IXGBE_EIMS_LSC);
+ IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC, mask);
+}
+
+enum latency_range {
+ lowest_latency = 0,
+ low_latency = 1,
+ bulk_latency = 2,
+ latency_invalid = 255
+};
+
+/**
+ * ixgbe_update_itr - update the dynamic ITR value based on statistics
+ * @q_vector: structure containing interrupt and ring information
+ * @ring_container: structure containing ring performance data
+ *
+ * Stores a new ITR value based on packets and byte
+ * counts during the last interrupt. The advantage of per interrupt
+ * computation is faster updates and more accurate ITR for the current
+ * traffic pattern. Constants in this function were computed
+ * based on theoretical maximum wire speed and thresholds were set based
+ * on testing data as well as attempting to minimize response time
+ * while increasing bulk throughput.
+ * this functionality is controlled by the InterruptThrottleRate module
+ * parameter (see ixgbe_param.c)
+ **/
+static void ixgbe_update_itr(struct ixgbe_q_vector *q_vector,
+ struct ixgbe_ring_container *ring_container)
+{
+ u64 bytes_perint;
+ struct ixgbe_adapter *adapter = q_vector->adapter;
+ int bytes = ring_container->total_bytes;
+ int packets = ring_container->total_packets;
+ u32 timepassed_us;
+ u8 itr_setting = ring_container->itr;
+
+ if (packets == 0)
+ return;
+
+ /* simple throttlerate management
+ * 0-20MB/s lowest (100000 ints/s)
+ * 20-100MB/s low (20000 ints/s)
+ * 100-1249MB/s bulk (8000 ints/s)
+ */
+ /* what was last interrupt timeslice? */
+ timepassed_us = 1000000/q_vector->eitr;
+ bytes_perint = bytes / timepassed_us; /* bytes/usec */
+
+ switch (itr_setting) {
+ case lowest_latency:
+ if (bytes_perint > adapter->eitr_low)
+ itr_setting = low_latency;
+ break;
+ case low_latency:
+ if (bytes_perint > adapter->eitr_high)
+ itr_setting = bulk_latency;
+ else if (bytes_perint <= adapter->eitr_low)
+ itr_setting = lowest_latency;
+ break;
+ case bulk_latency:
+ if (bytes_perint <= adapter->eitr_high)
+ itr_setting = low_latency;
+ break;
+ }
+
+ /* clear work counters since we have the values we need */
+ ring_container->total_bytes = 0;
+ ring_container->total_packets = 0;
+
+ /* write updated itr to ring container */
+ ring_container->itr = itr_setting;
+}
+
+/**
+ * ixgbe_write_eitr - write EITR register in hardware specific way
+ * @q_vector: structure containing interrupt and ring information
+ *
+ * This function is made to be called by ethtool and by the driver
+ * when it needs to update EITR registers at runtime. Hardware
+ * specific quirks/differences are taken care of here.
+ */
+void ixgbe_write_eitr(struct ixgbe_q_vector *q_vector)
+{
+ struct ixgbe_adapter *adapter = q_vector->adapter;
+ struct ixgbe_hw *hw = &adapter->hw;
+ int v_idx = q_vector->v_idx;
+ u32 itr_reg = EITR_INTS_PER_SEC_TO_REG(q_vector->eitr);
+
+ switch (adapter->hw.mac.type) {
+ case ixgbe_mac_82598EB:
+ /* must write high and low 16 bits to reset counter */
+ itr_reg |= (itr_reg << 16);
+ break;
+ case ixgbe_mac_82599EB:
+ case ixgbe_mac_X540:
+ /*
+ * 82599 and X540 can support a value of zero, so allow it for
+ * max interrupt rate, but there is an errata where it can
+ * not be zero with RSC
+ */
+ if (itr_reg == 8 &&
+ !(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED))
+ itr_reg = 0;
+
+ /*
+ * set the WDIS bit to not clear the timer bits and cause an
+ * immediate assertion of the interrupt
+ */
+ itr_reg |= IXGBE_EITR_CNT_WDIS;
+ break;
+ default:
+ break;
+ }
+ IXGBE_WRITE_REG(hw, IXGBE_EITR(v_idx), itr_reg);
+}
+
+static void ixgbe_set_itr(struct ixgbe_q_vector *q_vector)
+{
+ u32 new_itr = q_vector->eitr;
+ u8 current_itr;
+
+ ixgbe_update_itr(q_vector, &q_vector->tx);
+ ixgbe_update_itr(q_vector, &q_vector->rx);
+
+ current_itr = max(q_vector->rx.itr, q_vector->tx.itr);
+
+ switch (current_itr) {
+ /* counts and packets in update_itr are dependent on these numbers */
+ case lowest_latency:
+ new_itr = 100000;
+ break;
+ case low_latency:
+ new_itr = 20000; /* aka hwitr = ~200 */
+ break;
+ case bulk_latency:
+ new_itr = 8000;
+ break;
+ default:
+ break;
+ }
+
+ if (new_itr != q_vector->eitr) {
+ /* do an exponential smoothing */
+ new_itr = ((q_vector->eitr * 9) + new_itr)/10;
+
+ /* save the algorithm value here */
+ q_vector->eitr = new_itr;
+
+ ixgbe_write_eitr(q_vector);
+ }
+}
+
+/**
+ * ixgbe_check_overtemp_subtask - check for over tempurature
+ * @adapter: pointer to adapter
+ **/
+static void ixgbe_check_overtemp_subtask(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ u32 eicr = adapter->interrupt_event;
+
+ if (test_bit(__IXGBE_DOWN, &adapter->state))
+ return;
+
+ if (!(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) &&
+ !(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_EVENT))
+ return;
+
+ adapter->flags2 &= ~IXGBE_FLAG2_TEMP_SENSOR_EVENT;
+
+ switch (hw->device_id) {
+ case IXGBE_DEV_ID_82599_T3_LOM:
+ /*
+ * Since the warning interrupt is for both ports
+ * we don't have to check if:
+ * - This interrupt wasn't for our port.
+ * - We may have missed the interrupt so always have to
+ * check if we got a LSC
+ */
+ if (!(eicr & IXGBE_EICR_GPI_SDP0) &&
+ !(eicr & IXGBE_EICR_LSC))
+ return;
+
+ if (!(eicr & IXGBE_EICR_LSC) && hw->mac.ops.check_link) {
+ u32 autoneg;
+ bool link_up = false;
+
+ hw->mac.ops.check_link(hw, &autoneg, &link_up, false);
+
+ if (link_up)
+ return;
+ }
+
+ /* Check if this is not due to overtemp */
+ if (hw->phy.ops.check_overtemp(hw) != IXGBE_ERR_OVERTEMP)
+ return;
+
+ break;
+ default:
+ if (!(eicr & IXGBE_EICR_GPI_SDP0))
+ return;
+ break;
+ }
+ e_crit(drv,
+ "Network adapter has been stopped because it has over heated. "
+ "Restart the computer. If the problem persists, "
+ "power off the system and replace the adapter\n");
+
+ adapter->interrupt_event = 0;
+}
+
+static void ixgbe_check_fan_failure(struct ixgbe_adapter *adapter, u32 eicr)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+
+ if ((adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) &&
+ (eicr & IXGBE_EICR_GPI_SDP1)) {
+ e_crit(probe, "Fan has stopped, replace the adapter\n");
+ /* write to clear the interrupt */
+ IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1);
+ }
+}
+
+static void ixgbe_check_sfp_event(struct ixgbe_adapter *adapter, u32 eicr)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+
+ if (eicr & IXGBE_EICR_GPI_SDP2) {
+ /* Clear the interrupt */
+ IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP2);
+ if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
+ adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET;
+ ixgbe_service_event_schedule(adapter);
+ }
+ }
+
+ if (eicr & IXGBE_EICR_GPI_SDP1) {
+ /* Clear the interrupt */
+ IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1);
+ if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
+ adapter->flags |= IXGBE_FLAG_NEED_LINK_CONFIG;
+ ixgbe_service_event_schedule(adapter);
+ }
+ }
+}
+
+static void ixgbe_check_lsc(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+
+ adapter->lsc_int++;
+ adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
+ adapter->link_check_timeout = jiffies;
+ if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
+ IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_LSC);
+ IXGBE_WRITE_FLUSH(hw);
+ ixgbe_service_event_schedule(adapter);
+ }
+}
+
+static irqreturn_t ixgbe_msix_lsc(int irq, void *data)
+{
+ struct ixgbe_adapter *adapter = data;
+ struct ixgbe_hw *hw = &adapter->hw;
+ u32 eicr;
+
+ /*
+ * Workaround for Silicon errata. Use clear-by-write instead
+ * of clear-by-read. Reading with EICS will return the
+ * interrupt causes without clearing, which later be done
+ * with the write to EICR.
+ */
+ eicr = IXGBE_READ_REG(hw, IXGBE_EICS);
+ IXGBE_WRITE_REG(hw, IXGBE_EICR, eicr);
+
+ if (eicr & IXGBE_EICR_LSC)
+ ixgbe_check_lsc(adapter);
+
+ if (eicr & IXGBE_EICR_MAILBOX)
+ ixgbe_msg_task(adapter);
+
+ switch (hw->mac.type) {
+ case ixgbe_mac_82599EB:
+ case ixgbe_mac_X540:
+ /* Handle Flow Director Full threshold interrupt */
+ if (eicr & IXGBE_EICR_FLOW_DIR) {
+ int reinit_count = 0;
+ int i;
+ for (i = 0; i < adapter->num_tx_queues; i++) {
+ struct ixgbe_ring *ring = adapter->tx_ring[i];
+ if (test_and_clear_bit(__IXGBE_TX_FDIR_INIT_DONE,
+ &ring->state))
+ reinit_count++;
+ }
+ if (reinit_count) {
+ /* no more flow director interrupts until after init */
+ IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_FLOW_DIR);
+ eicr &= ~IXGBE_EICR_FLOW_DIR;
+ adapter->flags2 |= IXGBE_FLAG2_FDIR_REQUIRES_REINIT;
+ ixgbe_service_event_schedule(adapter);
+ }
+ }
+ ixgbe_check_sfp_event(adapter, eicr);
+ if ((adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) &&
+ ((eicr & IXGBE_EICR_GPI_SDP0) || (eicr & IXGBE_EICR_LSC))) {
+ if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
+ adapter->interrupt_event = eicr;
+ adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_EVENT;
+ ixgbe_service_event_schedule(adapter);
+ }
+ }
+ break;
+ default:
+ break;
+ }
+
+ ixgbe_check_fan_failure(adapter, eicr);
+
+ /* re-enable the original interrupt state, no lsc, no queues */
+ if (!test_bit(__IXGBE_DOWN, &adapter->state))
+ IXGBE_WRITE_REG(hw, IXGBE_EIMS, eicr &
+ ~(IXGBE_EIMS_LSC | IXGBE_EIMS_RTX_QUEUE));
+
+ return IRQ_HANDLED;
+}
+
+static inline void ixgbe_irq_enable_queues(struct ixgbe_adapter *adapter,
+ u64 qmask)
+{
+ u32 mask;
+ struct ixgbe_hw *hw = &adapter->hw;
+
+ switch (hw->mac.type) {
+ case ixgbe_mac_82598EB:
+ mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
+ IXGBE_WRITE_REG(hw, IXGBE_EIMS, mask);
+ break;
+ case ixgbe_mac_82599EB:
+ case ixgbe_mac_X540:
+ mask = (qmask & 0xFFFFFFFF);
+ if (mask)
+ IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(0), mask);
+ mask = (qmask >> 32);
+ if (mask)
+ IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(1), mask);
+ break;
+ default:
+ break;
+ }
+ /* skip the flush */
+}
+
+static inline void ixgbe_irq_disable_queues(struct ixgbe_adapter *adapter,
+ u64 qmask)
+{
+ u32 mask;
+ struct ixgbe_hw *hw = &adapter->hw;
+
+ switch (hw->mac.type) {
+ case ixgbe_mac_82598EB:
+ mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
+ IXGBE_WRITE_REG(hw, IXGBE_EIMC, mask);
+ break;
+ case ixgbe_mac_82599EB:
+ case ixgbe_mac_X540:
+ mask = (qmask & 0xFFFFFFFF);
+ if (mask)
+ IXGBE_WRITE_REG(hw, IXGBE_EIMC_EX(0), mask);
+ mask = (qmask >> 32);
+ if (mask)
+ IXGBE_WRITE_REG(hw, IXGBE_EIMC_EX(1), mask);
+ break;
+ default:
+ break;
+ }
+ /* skip the flush */
+}
+
+static irqreturn_t ixgbe_msix_clean_tx(int irq, void *data)
+{
+ struct ixgbe_q_vector *q_vector = data;
+ struct ixgbe_adapter *adapter = q_vector->adapter;
+ struct ixgbe_ring *tx_ring;
+ int i, r_idx;
+
+ if (!q_vector->tx.count)
+ return IRQ_HANDLED;
+
+ r_idx = find_first_bit(q_vector->tx.idx, adapter->num_tx_queues);
+ for (i = 0; i < q_vector->tx.count; i++) {
+ tx_ring = adapter->tx_ring[r_idx];
+ r_idx = find_next_bit(q_vector->tx.idx, adapter->num_tx_queues,
+ r_idx + 1);
+ }
+
+ /* EIAM disabled interrupts (on this vector) for us */
+ napi_schedule(&q_vector->napi);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * ixgbe_msix_clean_rx - single unshared vector rx clean (all queues)
+ * @irq: unused
+ * @data: pointer to our q_vector struct for this interrupt vector
+ **/
+static irqreturn_t ixgbe_msix_clean_rx(int irq, void *data)
+{
+ struct ixgbe_q_vector *q_vector = data;
+ struct ixgbe_adapter *adapter = q_vector->adapter;
+ struct ixgbe_ring *rx_ring;
+ int r_idx;
+ int i;
+
+#ifdef CONFIG_IXGBE_DCA
+ if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
+ ixgbe_update_dca(q_vector);
+#endif
+
+ r_idx = find_first_bit(q_vector->rx.idx, adapter->num_rx_queues);
+ for (i = 0; i < q_vector->rx.count; i++) {
+ rx_ring = adapter->rx_ring[r_idx];
+ r_idx = find_next_bit(q_vector->rx.idx, adapter->num_rx_queues,
+ r_idx + 1);
+ }
+
+ if (!q_vector->rx.count)
+ return IRQ_HANDLED;
+
+ /* EIAM disabled interrupts (on this vector) for us */
+ napi_schedule(&q_vector->napi);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t ixgbe_msix_clean_many(int irq, void *data)
+{
+ struct ixgbe_q_vector *q_vector = data;
+ struct ixgbe_adapter *adapter = q_vector->adapter;
+ struct ixgbe_ring *ring;
+ int r_idx;
+ int i;
+
+ if (!q_vector->tx.count && !q_vector->rx.count)
+ return IRQ_HANDLED;
+
+ r_idx = find_first_bit(q_vector->tx.idx, adapter->num_tx_queues);
+ for (i = 0; i < q_vector->tx.count; i++) {
+ ring = adapter->tx_ring[r_idx];
+ r_idx = find_next_bit(q_vector->tx.idx, adapter->num_tx_queues,
+ r_idx + 1);
+ }
+
+ r_idx = find_first_bit(q_vector->rx.idx, adapter->num_rx_queues);
+ for (i = 0; i < q_vector->rx.count; i++) {
+ ring = adapter->rx_ring[r_idx];
+ r_idx = find_next_bit(q_vector->rx.idx, adapter->num_rx_queues,
+ r_idx + 1);
+ }
+
+ /* EIAM disabled interrupts (on this vector) for us */
+ napi_schedule(&q_vector->napi);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * ixgbe_clean_rxonly - msix (aka one shot) rx clean routine
+ * @napi: napi struct with our devices info in it
+ * @budget: amount of work driver is allowed to do this pass, in packets
+ *
+ * This function is optimized for cleaning one queue only on a single
+ * q_vector!!!
+ **/
+static int ixgbe_clean_rxonly(struct napi_struct *napi, int budget)
+{
+ struct ixgbe_q_vector *q_vector =
+ container_of(napi, struct ixgbe_q_vector, napi);
+ struct ixgbe_adapter *adapter = q_vector->adapter;
+ struct ixgbe_ring *rx_ring = NULL;
+ int work_done = 0;
+ long r_idx;
+
+#ifdef CONFIG_IXGBE_DCA
+ if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
+ ixgbe_update_dca(q_vector);
+#endif
+
+ r_idx = find_first_bit(q_vector->rx.idx, adapter->num_rx_queues);
+ rx_ring = adapter->rx_ring[r_idx];
+
+ ixgbe_clean_rx_irq(q_vector, rx_ring, &work_done, budget);
+
+ /* If all Rx work done, exit the polling mode */
+ if (work_done < budget) {
+ napi_complete(napi);
+ if (adapter->rx_itr_setting & 1)
+ ixgbe_set_itr(q_vector);
+ if (!test_bit(__IXGBE_DOWN, &adapter->state))
+ ixgbe_irq_enable_queues(adapter,
+ ((u64)1 << q_vector->v_idx));
+ }
+
+ return work_done;
+}
+
+/**
+ * ixgbe_clean_rxtx_many - msix (aka one shot) rx clean routine
+ * @napi: napi struct with our devices info in it
+ * @budget: amount of work driver is allowed to do this pass, in packets
+ *
+ * This function will clean more than one rx queue associated with a
+ * q_vector.
+ **/
+static int ixgbe_clean_rxtx_many(struct napi_struct *napi, int budget)
+{
+ struct ixgbe_q_vector *q_vector =
+ container_of(napi, struct ixgbe_q_vector, napi);
+ struct ixgbe_adapter *adapter = q_vector->adapter;
+ struct ixgbe_ring *ring = NULL;
+ int work_done = 0, i;
+ long r_idx;
+ bool tx_clean_complete = true;
+
+#ifdef CONFIG_IXGBE_DCA
+ if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
+ ixgbe_update_dca(q_vector);
+#endif
+
+ r_idx = find_first_bit(q_vector->tx.idx, adapter->num_tx_queues);
+ for (i = 0; i < q_vector->tx.count; i++) {
+ ring = adapter->tx_ring[r_idx];
+ tx_clean_complete &= ixgbe_clean_tx_irq(q_vector, ring);
+ r_idx = find_next_bit(q_vector->tx.idx, adapter->num_tx_queues,
+ r_idx + 1);
+ }
+
+ /* attempt to distribute budget to each queue fairly, but don't allow
+ * the budget to go below 1 because we'll exit polling */
+ budget /= (q_vector->rx.count ?: 1);
+ budget = max(budget, 1);
+ r_idx = find_first_bit(q_vector->rx.idx, adapter->num_rx_queues);
+ for (i = 0; i < q_vector->rx.count; i++) {
+ ring = adapter->rx_ring[r_idx];
+ ixgbe_clean_rx_irq(q_vector, ring, &work_done, budget);
+ r_idx = find_next_bit(q_vector->rx.idx, adapter->num_rx_queues,
+ r_idx + 1);
+ }
+
+ r_idx = find_first_bit(q_vector->rx.idx, adapter->num_rx_queues);
+ ring = adapter->rx_ring[r_idx];
+ /* If all Rx work done, exit the polling mode */
+ if (work_done < budget) {
+ napi_complete(napi);
+ if (adapter->rx_itr_setting & 1)
+ ixgbe_set_itr(q_vector);
+ if (!test_bit(__IXGBE_DOWN, &adapter->state))
+ ixgbe_irq_enable_queues(adapter,
+ ((u64)1 << q_vector->v_idx));
+ return 0;
+ }
+
+ return work_done;
+}
+
+/**
+ * ixgbe_clean_txonly - msix (aka one shot) tx clean routine
+ * @napi: napi struct with our devices info in it
+ * @budget: amount of work driver is allowed to do this pass, in packets
+ *
+ * This function is optimized for cleaning one queue only on a single
+ * q_vector!!!
+ **/
+static int ixgbe_clean_txonly(struct napi_struct *napi, int budget)
+{
+ struct ixgbe_q_vector *q_vector =
+ container_of(napi, struct ixgbe_q_vector, napi);
+ struct ixgbe_adapter *adapter = q_vector->adapter;
+ struct ixgbe_ring *tx_ring = NULL;
+ int work_done = 0;
+ long r_idx;
+
+#ifdef CONFIG_IXGBE_DCA
+ if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
+ ixgbe_update_dca(q_vector);
+#endif
+
+ r_idx = find_first_bit(q_vector->tx.idx, adapter->num_tx_queues);
+ tx_ring = adapter->tx_ring[r_idx];
+
+ if (!ixgbe_clean_tx_irq(q_vector, tx_ring))
+ work_done = budget;
+
+ /* If all Tx work done, exit the polling mode */
+ if (work_done < budget) {
+ napi_complete(napi);
+ if (adapter->tx_itr_setting & 1)
+ ixgbe_set_itr(q_vector);
+ if (!test_bit(__IXGBE_DOWN, &adapter->state))
+ ixgbe_irq_enable_queues(adapter,
+ ((u64)1 << q_vector->v_idx));
+ }
+
+ return work_done;
+}
+
+static inline void map_vector_to_rxq(struct ixgbe_adapter *a, int v_idx,
+ int r_idx)
+{
+ struct ixgbe_q_vector *q_vector = a->q_vector[v_idx];
+ struct ixgbe_ring *rx_ring = a->rx_ring[r_idx];
+
+ set_bit(r_idx, q_vector->rx.idx);
+ q_vector->rx.count++;
+ rx_ring->q_vector = q_vector;
+}
+
+static inline void map_vector_to_txq(struct ixgbe_adapter *a, int v_idx,
+ int t_idx)
+{
+ struct ixgbe_q_vector *q_vector = a->q_vector[v_idx];
+ struct ixgbe_ring *tx_ring = a->tx_ring[t_idx];
+
+ set_bit(t_idx, q_vector->tx.idx);
+ q_vector->tx.count++;
+ tx_ring->q_vector = q_vector;
+ q_vector->tx.work_limit = a->tx_work_limit;
+}
+
+/**
+ * ixgbe_map_rings_to_vectors - Maps descriptor rings to vectors
+ * @adapter: board private structure to initialize
+ *
+ * This function maps descriptor rings to the queue-specific vectors
+ * we were allotted through the MSI-X enabling code. Ideally, we'd have
+ * one vector per ring/queue, but on a constrained vector budget, we
+ * group the rings as "efficiently" as possible. You would add new
+ * mapping configurations in here.
+ **/
+static int ixgbe_map_rings_to_vectors(struct ixgbe_adapter *adapter)
+{
+ int q_vectors;
+ int v_start = 0;
+ int rxr_idx = 0, txr_idx = 0;
+ int rxr_remaining = adapter->num_rx_queues;
+ int txr_remaining = adapter->num_tx_queues;
+ int i, j;
+ int rqpv, tqpv;
+ int err = 0;
+
+ /* No mapping required if MSI-X is disabled. */
+ if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
+ goto out;
+
+ q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
+
+ /*
+ * The ideal configuration...
+ * We have enough vectors to map one per queue.
+ */
+ if (q_vectors == adapter->num_rx_queues + adapter->num_tx_queues) {
+ for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++)
+ map_vector_to_rxq(adapter, v_start, rxr_idx);
+
+ for (; txr_idx < txr_remaining; v_start++, txr_idx++)
+ map_vector_to_txq(adapter, v_start, txr_idx);
+
+ goto out;
+ }
+
+ /*
+ * If we don't have enough vectors for a 1-to-1
+ * mapping, we'll have to group them so there are
+ * multiple queues per vector.
+ */
+ /* Re-adjusting *qpv takes care of the remainder. */
+ for (i = v_start; i < q_vectors; i++) {
+ rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors - i);
+ for (j = 0; j < rqpv; j++) {
+ map_vector_to_rxq(adapter, i, rxr_idx);
+ rxr_idx++;
+ rxr_remaining--;
+ }
+ tqpv = DIV_ROUND_UP(txr_remaining, q_vectors - i);
+ for (j = 0; j < tqpv; j++) {
+ map_vector_to_txq(adapter, i, txr_idx);
+ txr_idx++;
+ txr_remaining--;
+ }
+ }
+out:
+ return err;
+}
+
+/**
+ * ixgbe_request_msix_irqs - Initialize MSI-X interrupts
+ * @adapter: board private structure
+ *
+ * ixgbe_request_msix_irqs allocates MSI-X vectors and requests
+ * interrupts from the kernel.
+ **/
+static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ irqreturn_t (*handler)(int, void *);
+ int i, vector, q_vectors, err;
+ int ri = 0, ti = 0;
+
+ /* Decrement for Other and TCP Timer vectors */
+ q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
+
+ err = ixgbe_map_rings_to_vectors(adapter);
+ if (err)
+ return err;
+
+#define SET_HANDLER(_v) (((_v)->rx.count && (_v)->tx.count) \
+ ? &ixgbe_msix_clean_many : \
+ (_v)->rx.count ? &ixgbe_msix_clean_rx : \
+ (_v)->tx.count ? &ixgbe_msix_clean_tx : \
+ NULL)
+ for (vector = 0; vector < q_vectors; vector++) {
+ struct ixgbe_q_vector *q_vector = adapter->q_vector[vector];
+ handler = SET_HANDLER(q_vector);
+
+ if (handler == &ixgbe_msix_clean_rx) {
+ snprintf(q_vector->name, sizeof(q_vector->name) - 1,
+ "%s-%s-%d", netdev->name, "rx", ri++);
+ } else if (handler == &ixgbe_msix_clean_tx) {
+ snprintf(q_vector->name, sizeof(q_vector->name) - 1,
+ "%s-%s-%d", netdev->name, "tx", ti++);
+ } else if (handler == &ixgbe_msix_clean_many) {
+ snprintf(q_vector->name, sizeof(q_vector->name) - 1,
+ "%s-%s-%d", netdev->name, "TxRx", ri++);
+ ti++;
+ } else {
+ /* skip this unused q_vector */
+ continue;
+ }
+ err = request_irq(adapter->msix_entries[vector].vector,
+ handler, 0, q_vector->name,
+ q_vector);
+ if (err) {
+ e_err(probe, "request_irq failed for MSIX interrupt "
+ "Error: %d\n", err);
+ goto free_queue_irqs;
+ }
+ }
+
+ sprintf(adapter->lsc_int_name, "%s:lsc", netdev->name);
+ err = request_irq(adapter->msix_entries[vector].vector,
+ ixgbe_msix_lsc, 0, adapter->lsc_int_name, adapter);
+ if (err) {
+ e_err(probe, "request_irq for msix_lsc failed: %d\n", err);
+ goto free_queue_irqs;
+ }
+
+ return 0;
+
+free_queue_irqs:
+ for (i = vector - 1; i >= 0; i--)
+ free_irq(adapter->msix_entries[--vector].vector,
+ adapter->q_vector[i]);
+ adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
+ pci_disable_msix(adapter->pdev);
+ kfree(adapter->msix_entries);
+ adapter->msix_entries = NULL;
+ return err;
+}
+
+/**
+ * ixgbe_irq_enable - Enable default interrupt generation settings
+ * @adapter: board private structure
+ **/
+static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter, bool queues,
+ bool flush)
+{
+ u32 mask;
+
+ mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE);
+ if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)
+ mask |= IXGBE_EIMS_GPI_SDP0;
+ if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE)
+ mask |= IXGBE_EIMS_GPI_SDP1;
+ switch (adapter->hw.mac.type) {
+ case ixgbe_mac_82599EB:
+ case ixgbe_mac_X540:
+ mask |= IXGBE_EIMS_ECC;
+ mask |= IXGBE_EIMS_GPI_SDP1;
+ mask |= IXGBE_EIMS_GPI_SDP2;
+ if (adapter->num_vfs)
+ mask |= IXGBE_EIMS_MAILBOX;
+ break;
+ default:
+ break;
+ }
+ if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE)
+ mask |= IXGBE_EIMS_FLOW_DIR;
+
+ IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask);
+ if (queues)
+ ixgbe_irq_enable_queues(adapter, ~0);
+ if (flush)
+ IXGBE_WRITE_FLUSH(&adapter->hw);
+
+ if (adapter->num_vfs > 32) {
+ u32 eitrsel = (1 << (adapter->num_vfs - 32)) - 1;
+ IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, eitrsel);
+ }
+}
+
+/**
+ * ixgbe_intr - legacy mode Interrupt Handler
+ * @irq: interrupt number
+ * @data: pointer to a network interface device structure
+ **/
+static irqreturn_t ixgbe_intr(int irq, void *data)
+{
+ struct ixgbe_adapter *adapter = data;
+ struct ixgbe_hw *hw = &adapter->hw;
+ struct ixgbe_q_vector *q_vector = adapter->q_vector[0];
+ u32 eicr;
+
+ /*
+ * Workaround for silicon errata on 82598. Mask the interrupts
+ * before the read of EICR.
+ */
+ IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK);
+
+ /* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read
+ * therefore no explict interrupt disable is necessary */
+ eicr = IXGBE_READ_REG(hw, IXGBE_EICR);
+ if (!eicr) {
+ /*
+ * shared interrupt alert!
+ * make sure interrupts are enabled because the read will
+ * have disabled interrupts due to EIAM
+ * finish the workaround of silicon errata on 82598. Unmask
+ * the interrupt that we masked before the EICR read.
+ */
+ if (!test_bit(__IXGBE_DOWN, &adapter->state))
+ ixgbe_irq_enable(adapter, true, true);
+ return IRQ_NONE; /* Not our interrupt */
+ }
+
+ if (eicr & IXGBE_EICR_LSC)
+ ixgbe_check_lsc(adapter);
+
+ switch (hw->mac.type) {
+ case ixgbe_mac_82599EB:
+ ixgbe_check_sfp_event(adapter, eicr);
+ if ((adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) &&
+ ((eicr & IXGBE_EICR_GPI_SDP0) || (eicr & IXGBE_EICR_LSC))) {
+ if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
+ adapter->interrupt_event = eicr;
+ adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_EVENT;
+ ixgbe_service_event_schedule(adapter);
+ }
+ }
+ break;
+ default:
+ break;
+ }
+
+ ixgbe_check_fan_failure(adapter, eicr);
+
+ if (napi_schedule_prep(&(q_vector->napi))) {
+ /* would disable interrupts here but EIAM disabled it */
+ __napi_schedule(&(q_vector->napi));
+ }
+
+ /*
+ * re-enable link(maybe) and non-queue interrupts, no flush.
+ * ixgbe_poll will re-enable the queue interrupts
+ */
+
+ if (!test_bit(__IXGBE_DOWN, &adapter->state))
+ ixgbe_irq_enable(adapter, false, false);
+
+ return IRQ_HANDLED;
+}
+
+static inline void ixgbe_reset_q_vectors(struct ixgbe_adapter *adapter)
+{
+ int i, q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
+
+ for (i = 0; i < q_vectors; i++) {
+ struct ixgbe_q_vector *q_vector = adapter->q_vector[i];
+ bitmap_zero(q_vector->rx.idx, MAX_RX_QUEUES);
+ bitmap_zero(q_vector->tx.idx, MAX_TX_QUEUES);
+ q_vector->rx.count = 0;
+ q_vector->tx.count = 0;
+ }
+}
+
+/**
+ * ixgbe_request_irq - initialize interrupts
+ * @adapter: board private structure
+ *
+ * Attempts to configure interrupts using the best available
+ * capabilities of the hardware and kernel.
+ **/
+static int ixgbe_request_irq(struct ixgbe_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ int err;
+
+ if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
+ err = ixgbe_request_msix_irqs(adapter);
+ } else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) {
+ err = request_irq(adapter->pdev->irq, ixgbe_intr, 0,
+ netdev->name, adapter);
+ } else {
+ err = request_irq(adapter->pdev->irq, ixgbe_intr, IRQF_SHARED,
+ netdev->name, adapter);
+ }
+
+ if (err)
+ e_err(probe, "request_irq failed, Error %d\n", err);
+
+ return err;
+}
+
+static void ixgbe_free_irq(struct ixgbe_adapter *adapter)
+{
+ if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
+ int i, q_vectors;
+
+ q_vectors = adapter->num_msix_vectors;
+
+ i = q_vectors - 1;
+ free_irq(adapter->msix_entries[i].vector, adapter);
+
+ i--;
+ for (; i >= 0; i--) {
+ /* free only the irqs that were actually requested */
+ if (!adapter->q_vector[i]->rx.count &&
+ !adapter->q_vector[i]->tx.count)
+ continue;
+
+ free_irq(adapter->msix_entries[i].vector,
+ adapter->q_vector[i]);
+ }
+
+ ixgbe_reset_q_vectors(adapter);
+ } else {
+ free_irq(adapter->pdev->irq, adapter);
+ }
+}
+
+/**
+ * ixgbe_irq_disable - Mask off interrupt generation on the NIC
+ * @adapter: board private structure
+ **/
+static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter)
+{
+ switch (adapter->hw.mac.type) {
+ case ixgbe_mac_82598EB:
+ IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0);
+ break;
+ case ixgbe_mac_82599EB:
+ case ixgbe_mac_X540:
+ IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, 0xFFFF0000);
+ IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(0), ~0);
+ IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(1), ~0);
+ if (adapter->num_vfs > 32)
+ IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, 0);
+ break;
+ default:
+ break;
+ }
+ IXGBE_WRITE_FLUSH(&adapter->hw);
+ if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
+ int i;
+ for (i = 0; i < adapter->num_msix_vectors; i++)
+ synchronize_irq(adapter->msix_entries[i].vector);
+ } else {
+ synchronize_irq(adapter->pdev->irq);
+ }
+}
+
+/**
+ * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts
+ *
+ **/
+static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+
+ IXGBE_WRITE_REG(hw, IXGBE_EITR(0),
+ EITR_INTS_PER_SEC_TO_REG(adapter->rx_eitr_param));
+
+ ixgbe_set_ivar(adapter, 0, 0, 0);
+ ixgbe_set_ivar(adapter, 1, 0, 0);
+
+ map_vector_to_rxq(adapter, 0, 0);
+ map_vector_to_txq(adapter, 0, 0);
+
+ e_info(hw, "Legacy interrupt IVAR setup done\n");
+}
+
+/**
+ * ixgbe_configure_tx_ring - Configure 8259x Tx ring after Reset
+ * @adapter: board private structure
+ * @ring: structure containing ring specific data
+ *
+ * Configure the Tx descriptor ring after a reset.
+ **/
+void ixgbe_configure_tx_ring(struct ixgbe_adapter *adapter,
+ struct ixgbe_ring *ring)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ u64 tdba = ring->dma;
+ int wait_loop = 10;
+ u32 txdctl;
+ u8 reg_idx = ring->reg_idx;
+
+ /* disable queue to avoid issues while updating state */
+ txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx));
+ IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx),
+ txdctl & ~IXGBE_TXDCTL_ENABLE);
+ IXGBE_WRITE_FLUSH(hw);
+
+ IXGBE_WRITE_REG(hw, IXGBE_TDBAL(reg_idx),
+ (tdba & DMA_BIT_MASK(32)));
+ IXGBE_WRITE_REG(hw, IXGBE_TDBAH(reg_idx), (tdba >> 32));
+ IXGBE_WRITE_REG(hw, IXGBE_TDLEN(reg_idx),
+ ring->count * sizeof(union ixgbe_adv_tx_desc));
+ IXGBE_WRITE_REG(hw, IXGBE_TDH(reg_idx), 0);
+ IXGBE_WRITE_REG(hw, IXGBE_TDT(reg_idx), 0);
+ ring->tail = hw->hw_addr + IXGBE_TDT(reg_idx);
+
+ /* configure fetching thresholds */
+ if (adapter->rx_itr_setting == 0) {
+ /* cannot set wthresh when itr==0 */
+ txdctl &= ~0x007F0000;
+ } else {
+ /* enable WTHRESH=8 descriptors, to encourage burst writeback */
+ txdctl |= (8 << 16);
+ }
+ if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
+ /* PThresh workaround for Tx hang with DFP enabled. */
+ txdctl |= 32;
+ }
+
+ /* reinitialize flowdirector state */
+ if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) &&
+ adapter->atr_sample_rate) {
+ ring->atr_sample_rate = adapter->atr_sample_rate;
+ ring->atr_count = 0;
+ set_bit(__IXGBE_TX_FDIR_INIT_DONE, &ring->state);
+ } else {
+ ring->atr_sample_rate = 0;
+ }
+
+ clear_bit(__IXGBE_HANG_CHECK_ARMED, &ring->state);
+
+ /* enable queue */
+ txdctl |= IXGBE_TXDCTL_ENABLE;
+ IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), txdctl);
+
+ /* TXDCTL.EN will return 0 on 82598 if link is down, so skip it */
+ if (hw->mac.type == ixgbe_mac_82598EB &&
+ !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP))
+ return;
+
+ /* poll to verify queue is enabled */
+ do {
+ usleep_range(1000, 2000);
+ txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx));
+ } while (--wait_loop && !(txdctl & IXGBE_TXDCTL_ENABLE));
+ if (!wait_loop)
+ e_err(drv, "Could not enable Tx Queue %d\n", reg_idx);
+}
+
+static void ixgbe_setup_mtqc(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ u32 rttdcs;
+ u32 reg;
+ u8 tcs = netdev_get_num_tc(adapter->netdev);
+
+ if (hw->mac.type == ixgbe_mac_82598EB)
+ return;
+
+ /* disable the arbiter while setting MTQC */
+ rttdcs = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
+ rttdcs |= IXGBE_RTTDCS_ARBDIS;
+ IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
+
+ /* set transmit pool layout */
+ switch (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
+ case (IXGBE_FLAG_SRIOV_ENABLED):
+ IXGBE_WRITE_REG(hw, IXGBE_MTQC,
+ (IXGBE_MTQC_VT_ENA | IXGBE_MTQC_64VF));
+ break;
+ default:
+ if (!tcs)
+ reg = IXGBE_MTQC_64Q_1PB;
+ else if (tcs <= 4)
+ reg = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ;
+ else
+ reg = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ;
+
+ IXGBE_WRITE_REG(hw, IXGBE_MTQC, reg);
+
+ /* Enable Security TX Buffer IFG for multiple pb */
+ if (tcs) {
+ reg = IXGBE_READ_REG(hw, IXGBE_SECTXMINIFG);
+ reg |= IXGBE_SECTX_DCB;
+ IXGBE_WRITE_REG(hw, IXGBE_SECTXMINIFG, reg);
+ }
+ break;
+ }
+
+ /* re-enable the arbiter */
+ rttdcs &= ~IXGBE_RTTDCS_ARBDIS;
+ IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
+}
+
+/**
+ * ixgbe_configure_tx - Configure 8259x Transmit Unit after Reset
+ * @adapter: board private structure
+ *
+ * Configure the Tx unit of the MAC after a reset.
+ **/
+static void ixgbe_configure_tx(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ u32 dmatxctl;
+ u32 i;
+
+ ixgbe_setup_mtqc(adapter);
+
+ if (hw->mac.type != ixgbe_mac_82598EB) {
+ /* DMATXCTL.EN must be before Tx queues are enabled */
+ dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL);
+ dmatxctl |= IXGBE_DMATXCTL_TE;
+ IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl);
+ }
+
+ /* Setup the HW Tx Head and Tail descriptor pointers */
+ for (i = 0; i < adapter->num_tx_queues; i++)
+ ixgbe_configure_tx_ring(adapter, adapter->tx_ring[i]);
+}
+
+#define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2
+
+static void ixgbe_configure_srrctl(struct ixgbe_adapter *adapter,
+ struct ixgbe_ring *rx_ring)
+{
+ u32 srrctl;
+ u8 reg_idx = rx_ring->reg_idx;
+
+ switch (adapter->hw.mac.type) {
+ case ixgbe_mac_82598EB: {
+ struct ixgbe_ring_feature *feature = adapter->ring_feature;
+ const int mask = feature[RING_F_RSS].mask;
+ reg_idx = reg_idx & mask;
+ }
+ break;
+ case ixgbe_mac_82599EB:
+ case ixgbe_mac_X540:
+ default:
+ break;
+ }
+
+ srrctl = IXGBE_READ_REG(&adapter->hw, IXGBE_SRRCTL(reg_idx));
+
+ srrctl &= ~IXGBE_SRRCTL_BSIZEHDR_MASK;
+ srrctl &= ~IXGBE_SRRCTL_BSIZEPKT_MASK;
+ if (adapter->num_vfs)
+ srrctl |= IXGBE_SRRCTL_DROP_EN;
+
+ srrctl |= (IXGBE_RX_HDR_SIZE << IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) &
+ IXGBE_SRRCTL_BSIZEHDR_MASK;
+
+ if (ring_is_ps_enabled(rx_ring)) {
+#if (PAGE_SIZE / 2) > IXGBE_MAX_RXBUFFER
+ srrctl |= IXGBE_MAX_RXBUFFER >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
+#else
+ srrctl |= (PAGE_SIZE / 2) >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
+#endif
+ srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
+ } else {
+ srrctl |= ALIGN(rx_ring->rx_buf_len, 1024) >>
+ IXGBE_SRRCTL_BSIZEPKT_SHIFT;
+ srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF;
+ }
+
+ IXGBE_WRITE_REG(&adapter->hw, IXGBE_SRRCTL(reg_idx), srrctl);
+}
+
+static void ixgbe_setup_mrqc(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ static const u32 seed[10] = { 0xE291D73D, 0x1805EC6C, 0x2A94B30D,
+ 0xA54F2BEC, 0xEA49AF7C, 0xE214AD3D, 0xB855AABE,
+ 0x6A3E67EA, 0x14364D17, 0x3BED200D};
+ u32 mrqc = 0, reta = 0;
+ u32 rxcsum;
+ int i, j;
+ u8 tcs = netdev_get_num_tc(adapter->netdev);
+ int maxq = adapter->ring_feature[RING_F_RSS].indices;
+
+ if (tcs)
+ maxq = min(maxq, adapter->num_tx_queues / tcs);
+
+ /* Fill out hash function seeds */
+ for (i = 0; i < 10; i++)
+ IXGBE_WRITE_REG(hw, IXGBE_RSSRK(i), seed[i]);
+
+ /* Fill out redirection table */
+ for (i = 0, j = 0; i < 128; i++, j++) {
+ if (j == maxq)
+ j = 0;
+ /* reta = 4-byte sliding window of
+ * 0x00..(indices-1)(indices-1)00..etc. */
+ reta = (reta << 8) | (j * 0x11);
+ if ((i & 3) == 3)
+ IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2), reta);
+ }
+
+ /* Disable indicating checksum in descriptor, enables RSS hash */
+ rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM);
+ rxcsum |= IXGBE_RXCSUM_PCSD;
+ IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum);
+
+ if (adapter->hw.mac.type == ixgbe_mac_82598EB &&
+ (adapter->flags & IXGBE_FLAG_RSS_ENABLED)) {
+ mrqc = IXGBE_MRQC_RSSEN;
+ } else {
+ int mask = adapter->flags & (IXGBE_FLAG_RSS_ENABLED
+ | IXGBE_FLAG_SRIOV_ENABLED);
+
+ switch (mask) {
+ case (IXGBE_FLAG_RSS_ENABLED):
+ if (!tcs)
+ mrqc = IXGBE_MRQC_RSSEN;
+ else if (tcs <= 4)
+ mrqc = IXGBE_MRQC_RTRSS4TCEN;
+ else
+ mrqc = IXGBE_MRQC_RTRSS8TCEN;
+ break;
+ case (IXGBE_FLAG_SRIOV_ENABLED):
+ mrqc = IXGBE_MRQC_VMDQEN;
+ break;
+ default:
+ break;
+ }
+ }
+
+ /* Perform hash on these packet types */
+ mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4
+ | IXGBE_MRQC_RSS_FIELD_IPV4_TCP
+ | IXGBE_MRQC_RSS_FIELD_IPV6
+ | IXGBE_MRQC_RSS_FIELD_IPV6_TCP;
+
+ IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
+}
+
+/**
+ * ixgbe_configure_rscctl - enable RSC for the indicated ring
+ * @adapter: address of board private structure
+ * @index: index of ring to set
+ **/
+static void ixgbe_configure_rscctl(struct ixgbe_adapter *adapter,
+ struct ixgbe_ring *ring)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ u32 rscctrl;
+ int rx_buf_len;
+ u8 reg_idx = ring->reg_idx;
+
+ if (!ring_is_rsc_enabled(ring))
+ return;
+
+ rx_buf_len = ring->rx_buf_len;
+ rscctrl = IXGBE_READ_REG(hw, IXGBE_RSCCTL(reg_idx));
+ rscctrl |= IXGBE_RSCCTL_RSCEN;
+ /*
+ * we must limit the number of descriptors so that the
+ * total size of max desc * buf_len is not greater
+ * than 65535
+ */
+ if (ring_is_ps_enabled(ring)) {
+#if (MAX_SKB_FRAGS > 16)
+ rscctrl |= IXGBE_RSCCTL_MAXDESC_16;
+#elif (MAX_SKB_FRAGS > 8)
+ rscctrl |= IXGBE_RSCCTL_MAXDESC_8;
+#elif (MAX_SKB_FRAGS > 4)
+ rscctrl |= IXGBE_RSCCTL_MAXDESC_4;
+#else
+ rscctrl |= IXGBE_RSCCTL_MAXDESC_1;
+#endif
+ } else {
+ if (rx_buf_len < IXGBE_RXBUFFER_4096)
+ rscctrl |= IXGBE_RSCCTL_MAXDESC_16;
+ else if (rx_buf_len < IXGBE_RXBUFFER_8192)
+ rscctrl |= IXGBE_RSCCTL_MAXDESC_8;
+ else
+ rscctrl |= IXGBE_RSCCTL_MAXDESC_4;
+ }
+ IXGBE_WRITE_REG(hw, IXGBE_RSCCTL(reg_idx), rscctrl);
+}
+
+/**
+ * ixgbe_set_uta - Set unicast filter table address
+ * @adapter: board private structure
+ *
+ * The unicast table address is a register array of 32-bit registers.
+ * The table is meant to be used in a way similar to how the MTA is used
+ * however due to certain limitations in the hardware it is necessary to
+ * set all the hash bits to 1 and use the VMOLR ROPE bit as a promiscuous
+ * enable bit to allow vlan tag stripping when promiscuous mode is enabled
+ **/
+static void ixgbe_set_uta(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ int i;
+
+ /* The UTA table only exists on 82599 hardware and newer */
+ if (hw->mac.type < ixgbe_mac_82599EB)
+ return;
+
+ /* we only need to do this if VMDq is enabled */
+ if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
+ return;
+
+ for (i = 0; i < 128; i++)
+ IXGBE_WRITE_REG(hw, IXGBE_UTA(i), ~0);
+}
+
+#define IXGBE_MAX_RX_DESC_POLL 10
+static void ixgbe_rx_desc_queue_enable(struct ixgbe_adapter *adapter,
+ struct ixgbe_ring *ring)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ int wait_loop = IXGBE_MAX_RX_DESC_POLL;
+ u32 rxdctl;
+ u8 reg_idx = ring->reg_idx;
+
+ /* RXDCTL.EN will return 0 on 82598 if link is down, so skip it */
+ if (hw->mac.type == ixgbe_mac_82598EB &&
+ !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP))
+ return;
+
+ do {
+ usleep_range(1000, 2000);
+ rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
+ } while (--wait_loop && !(rxdctl & IXGBE_RXDCTL_ENABLE));
+
+ if (!wait_loop) {
+ e_err(drv, "RXDCTL.ENABLE on Rx queue %d not set within "
+ "the polling period\n", reg_idx);
+ }
+}
+
+void ixgbe_disable_rx_queue(struct ixgbe_adapter *adapter,
+ struct ixgbe_ring *ring)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ int wait_loop = IXGBE_MAX_RX_DESC_POLL;
+ u32 rxdctl;
+ u8 reg_idx = ring->reg_idx;
+
+ rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
+ rxdctl &= ~IXGBE_RXDCTL_ENABLE;
+
+ /* write value back with RXDCTL.ENABLE bit cleared */
+ IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl);
+
+ if (hw->mac.type == ixgbe_mac_82598EB &&
+ !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP))
+ return;
+
+ /* the hardware may take up to 100us to really disable the rx queue */
+ do {
+ udelay(10);
+ rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
+ } while (--wait_loop && (rxdctl & IXGBE_RXDCTL_ENABLE));
+
+ if (!wait_loop) {
+ e_err(drv, "RXDCTL.ENABLE on Rx queue %d not cleared within "
+ "the polling period\n", reg_idx);
+ }
+}
+
+void ixgbe_configure_rx_ring(struct ixgbe_adapter *adapter,
+ struct ixgbe_ring *ring)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ u64 rdba = ring->dma;
+ u32 rxdctl;
+ u8 reg_idx = ring->reg_idx;
+
+ /* disable queue to avoid issues while updating state */
+ rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
+ ixgbe_disable_rx_queue(adapter, ring);
+
+ IXGBE_WRITE_REG(hw, IXGBE_RDBAL(reg_idx), (rdba & DMA_BIT_MASK(32)));
+ IXGBE_WRITE_REG(hw, IXGBE_RDBAH(reg_idx), (rdba >> 32));
+ IXGBE_WRITE_REG(hw, IXGBE_RDLEN(reg_idx),
+ ring->count * sizeof(union ixgbe_adv_rx_desc));
+ IXGBE_WRITE_REG(hw, IXGBE_RDH(reg_idx), 0);
+ IXGBE_WRITE_REG(hw, IXGBE_RDT(reg_idx), 0);
+ ring->tail = hw->hw_addr + IXGBE_RDT(reg_idx);
+
+ ixgbe_configure_srrctl(adapter, ring);
+ ixgbe_configure_rscctl(adapter, ring);
+
+ /* If operating in IOV mode set RLPML for X540 */
+ if ((adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) &&
+ hw->mac.type == ixgbe_mac_X540) {
+ rxdctl &= ~IXGBE_RXDCTL_RLPMLMASK;
+ rxdctl |= ((ring->netdev->mtu + ETH_HLEN +
+ ETH_FCS_LEN + VLAN_HLEN) | IXGBE_RXDCTL_RLPML_EN);
+ }
+
+ if (hw->mac.type == ixgbe_mac_82598EB) {
+ /*
+ * enable cache line friendly hardware writes:
+ * PTHRESH=32 descriptors (half the internal cache),
+ * this also removes ugly rx_no_buffer_count increment
+ * HTHRESH=4 descriptors (to minimize latency on fetch)
+ * WTHRESH=8 burst writeback up to two cache lines
+ */
+ rxdctl &= ~0x3FFFFF;
+ rxdctl |= 0x080420;
+ }
+
+ /* enable receive descriptor ring */
+ rxdctl |= IXGBE_RXDCTL_ENABLE;
+ IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl);
+
+ ixgbe_rx_desc_queue_enable(adapter, ring);
+ ixgbe_alloc_rx_buffers(ring, ixgbe_desc_unused(ring));
+}
+
+static void ixgbe_setup_psrtype(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ int p;
+
+ /* PSRTYPE must be initialized in non 82598 adapters */
+ u32 psrtype = IXGBE_PSRTYPE_TCPHDR |
+ IXGBE_PSRTYPE_UDPHDR |
+ IXGBE_PSRTYPE_IPV4HDR |
+ IXGBE_PSRTYPE_L2HDR |
+ IXGBE_PSRTYPE_IPV6HDR;
+
+ if (hw->mac.type == ixgbe_mac_82598EB)
+ return;
+
+ if (adapter->flags & IXGBE_FLAG_RSS_ENABLED)
+ psrtype |= (adapter->num_rx_queues_per_pool << 29);
+
+ for (p = 0; p < adapter->num_rx_pools; p++)
+ IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(adapter->num_vfs + p),
+ psrtype);
+}
+
+static void ixgbe_configure_virtualization(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ u32 gcr_ext;
+ u32 vt_reg_bits;
+ u32 reg_offset, vf_shift;
+ u32 vmdctl;
+
+ if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
+ return;
+
+ vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
+ vt_reg_bits = IXGBE_VMD_CTL_VMDQ_EN | IXGBE_VT_CTL_REPLEN;
+ vt_reg_bits |= (adapter->num_vfs << IXGBE_VT_CTL_POOL_SHIFT);
+ IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl | vt_reg_bits);
+
+ vf_shift = adapter->num_vfs % 32;
+ reg_offset = (adapter->num_vfs > 32) ? 1 : 0;
+
+ /* Enable only the PF's pool for Tx/Rx */
+ IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), (1 << vf_shift));
+ IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset ^ 1), 0);
+ IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), (1 << vf_shift));
+ IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset ^ 1), 0);
+ IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
+
+ /* Map PF MAC address in RAR Entry 0 to first pool following VFs */
+ hw->mac.ops.set_vmdq(hw, 0, adapter->num_vfs);
+
+ /*
+ * Set up VF register offsets for selected VT Mode,
+ * i.e. 32 or 64 VFs for SR-IOV
+ */
+ gcr_ext = IXGBE_READ_REG(hw, IXGBE_GCR_EXT);
+ gcr_ext |= IXGBE_GCR_EXT_MSIX_EN;
+ gcr_ext |= IXGBE_GCR_EXT_VT_MODE_64;
+ IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext);
+
+ /* enable Tx loopback for VF/PF communication */
+ IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
+ /* Enable MAC Anti-Spoofing */
+ hw->mac.ops.set_mac_anti_spoofing(hw,
+ (adapter->antispoofing_enabled =
+ (adapter->num_vfs != 0)),
+ adapter->num_vfs);
+}
+
+static void ixgbe_set_rx_buffer_len(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ struct net_device *netdev = adapter->netdev;
+ int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
+ int rx_buf_len;
+ struct ixgbe_ring *rx_ring;
+ int i;
+ u32 mhadd, hlreg0;
+
+ /* Decide whether to use packet split mode or not */
+ /* On by default */
+ adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED;
+
+ /* Do not use packet split if we're in SR-IOV Mode */
+ if (adapter->num_vfs)
+ adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED;
+
+ /* Disable packet split due to 82599 erratum #45 */
+ if (hw->mac.type == ixgbe_mac_82599EB)
+ adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED;
+
+ /* Set the RX buffer length according to the mode */
+ if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
+ rx_buf_len = IXGBE_RX_HDR_SIZE;
+ } else {
+ if (!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) &&
+ (netdev->mtu <= ETH_DATA_LEN))
+ rx_buf_len = MAXIMUM_ETHERNET_VLAN_SIZE;
+ else
+ rx_buf_len = ALIGN(max_frame + VLAN_HLEN, 1024);
+ }
+
+#ifdef IXGBE_FCOE
+ /* adjust max frame to be able to do baby jumbo for FCoE */
+ if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED) &&
+ (max_frame < IXGBE_FCOE_JUMBO_FRAME_SIZE))
+ max_frame = IXGBE_FCOE_JUMBO_FRAME_SIZE;
+
+#endif /* IXGBE_FCOE */
+ mhadd = IXGBE_READ_REG(hw, IXGBE_MHADD);
+ if (max_frame != (mhadd >> IXGBE_MHADD_MFS_SHIFT)) {
+ mhadd &= ~IXGBE_MHADD_MFS_MASK;
+ mhadd |= max_frame << IXGBE_MHADD_MFS_SHIFT;
+
+ IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd);
+ }
+
+ hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
+ /* set jumbo enable since MHADD.MFS is keeping size locked at max_frame */
+ hlreg0 |= IXGBE_HLREG0_JUMBOEN;
+ IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
+
+ /*
+ * Setup the HW Rx Head and Tail Descriptor Pointers and
+ * the Base and Length of the Rx Descriptor Ring
+ */
+ for (i = 0; i < adapter->num_rx_queues; i++) {
+ rx_ring = adapter->rx_ring[i];
+ rx_ring->rx_buf_len = rx_buf_len;
+
+ if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED)
+ set_ring_ps_enabled(rx_ring);
+ else
+ clear_ring_ps_enabled(rx_ring);
+
+ if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)
+ set_ring_rsc_enabled(rx_ring);
+ else
+ clear_ring_rsc_enabled(rx_ring);
+
+#ifdef IXGBE_FCOE
+ if (netdev->features & NETIF_F_FCOE_MTU) {
+ struct ixgbe_ring_feature *f;
+ f = &adapter->ring_feature[RING_F_FCOE];
+ if ((i >= f->mask) && (i < f->mask + f->indices)) {
+ clear_ring_ps_enabled(rx_ring);
+ if (rx_buf_len < IXGBE_FCOE_JUMBO_FRAME_SIZE)
+ rx_ring->rx_buf_len =
+ IXGBE_FCOE_JUMBO_FRAME_SIZE;
+ } else if (!ring_is_rsc_enabled(rx_ring) &&
+ !ring_is_ps_enabled(rx_ring)) {
+ rx_ring->rx_buf_len =
+ IXGBE_FCOE_JUMBO_FRAME_SIZE;
+ }
+ }
+#endif /* IXGBE_FCOE */
+ }
+}
+
+static void ixgbe_setup_rdrxctl(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ u32 rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
+
+ switch (hw->mac.type) {
+ case ixgbe_mac_82598EB:
+ /*
+ * For VMDq support of different descriptor types or
+ * buffer sizes through the use of multiple SRRCTL
+ * registers, RDRXCTL.MVMEN must be set to 1
+ *
+ * also, the manual doesn't mention it clearly but DCA hints
+ * will only use queue 0's tags unless this bit is set. Side
+ * effects of setting this bit are only that SRRCTL must be
+ * fully programmed [0..15]
+ */
+ rdrxctl |= IXGBE_RDRXCTL_MVMEN;
+ break;
+ case ixgbe_mac_82599EB:
+ case ixgbe_mac_X540:
+ /* Disable RSC for ACK packets */
+ IXGBE_WRITE_REG(hw, IXGBE_RSCDBU,
+ (IXGBE_RSCDBU_RSCACKDIS | IXGBE_READ_REG(hw, IXGBE_RSCDBU)));
+ rdrxctl &= ~IXGBE_RDRXCTL_RSCFRSTSIZE;
+ /* hardware requires some bits to be set by default */
+ rdrxctl |= (IXGBE_RDRXCTL_RSCACKC | IXGBE_RDRXCTL_FCOE_WRFIX);
+ rdrxctl |= IXGBE_RDRXCTL_CRCSTRIP;
+ break;
+ default:
+ /* We should do nothing since we don't know this hardware */
+ return;
+ }
+
+ IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl);
+}
+
+/**
+ * ixgbe_configure_rx - Configure 8259x Receive Unit after Reset
+ * @adapter: board private structure
+ *
+ * Configure the Rx unit of the MAC after a reset.
+ **/
+static void ixgbe_configure_rx(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ int i;
+ u32 rxctrl;
+
+ /* disable receives while setting up the descriptors */
+ rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
+ IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN);
+
+ ixgbe_setup_psrtype(adapter);
+ ixgbe_setup_rdrxctl(adapter);
+
+ /* Program registers for the distribution of queues */
+ ixgbe_setup_mrqc(adapter);
+
+ ixgbe_set_uta(adapter);
+
+ /* set_rx_buffer_len must be called before ring initialization */
+ ixgbe_set_rx_buffer_len(adapter);
+
+ /*
+ * Setup the HW Rx Head and Tail Descriptor Pointers and
+ * the Base and Length of the Rx Descriptor Ring
+ */
+ for (i = 0; i < adapter->num_rx_queues; i++)
+ ixgbe_configure_rx_ring(adapter, adapter->rx_ring[i]);
+
+ /* disable drop enable for 82598 parts */
+ if (hw->mac.type == ixgbe_mac_82598EB)
+ rxctrl |= IXGBE_RXCTRL_DMBYPS;
+
+ /* enable all receives */
+ rxctrl |= IXGBE_RXCTRL_RXEN;
+ hw->mac.ops.enable_rx_dma(hw, rxctrl);
+}
+
+static void ixgbe_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+ struct ixgbe_hw *hw = &adapter->hw;
+ int pool_ndx = adapter->num_vfs;
+
+ /* add VID to filter table */
+ hw->mac.ops.set_vfta(&adapter->hw, vid, pool_ndx, true);
+ set_bit(vid, adapter->active_vlans);
+}
+
+static void ixgbe_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+ struct ixgbe_hw *hw = &adapter->hw;
+ int pool_ndx = adapter->num_vfs;
+
+ /* remove VID from filter table */
+ hw->mac.ops.set_vfta(&adapter->hw, vid, pool_ndx, false);
+ clear_bit(vid, adapter->active_vlans);
+}
+
+/**
+ * ixgbe_vlan_filter_disable - helper to disable hw vlan filtering
+ * @adapter: driver data
+ */
+static void ixgbe_vlan_filter_disable(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ u32 vlnctrl;
+
+ vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
+ vlnctrl &= ~(IXGBE_VLNCTRL_VFE | IXGBE_VLNCTRL_CFIEN);
+ IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
+}
+
+/**
+ * ixgbe_vlan_filter_enable - helper to enable hw vlan filtering
+ * @adapter: driver data
+ */
+static void ixgbe_vlan_filter_enable(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ u32 vlnctrl;
+
+ vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
+ vlnctrl |= IXGBE_VLNCTRL_VFE;
+ vlnctrl &= ~IXGBE_VLNCTRL_CFIEN;
+ IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
+}
+
+/**
+ * ixgbe_vlan_strip_disable - helper to disable hw vlan stripping
+ * @adapter: driver data
+ */
+static void ixgbe_vlan_strip_disable(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ u32 vlnctrl;
+ int i, j;
+
+ switch (hw->mac.type) {
+ case ixgbe_mac_82598EB:
+ vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
+ vlnctrl &= ~IXGBE_VLNCTRL_VME;
+ IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
+ break;
+ case ixgbe_mac_82599EB:
+ case ixgbe_mac_X540:
+ for (i = 0; i < adapter->num_rx_queues; i++) {
+ j = adapter->rx_ring[i]->reg_idx;
+ vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
+ vlnctrl &= ~IXGBE_RXDCTL_VME;
+ IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl);
+ }
+ break;
+ default:
+ break;
+ }
+}
+
+/**
+ * ixgbe_vlan_strip_enable - helper to enable hw vlan stripping
+ * @adapter: driver data
+ */
+static void ixgbe_vlan_strip_enable(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ u32 vlnctrl;
+ int i, j;
+
+ switch (hw->mac.type) {
+ case ixgbe_mac_82598EB:
+ vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
+ vlnctrl |= IXGBE_VLNCTRL_VME;
+ IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
+ break;
+ case ixgbe_mac_82599EB:
+ case ixgbe_mac_X540:
+ for (i = 0; i < adapter->num_rx_queues; i++) {
+ j = adapter->rx_ring[i]->reg_idx;
+ vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
+ vlnctrl |= IXGBE_RXDCTL_VME;
+ IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl);
+ }
+ break;
+ default:
+ break;
+ }
+}
+
+static void ixgbe_restore_vlan(struct ixgbe_adapter *adapter)
+{
+ u16 vid;
+
+ ixgbe_vlan_rx_add_vid(adapter->netdev, 0);
+
+ for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID)
+ ixgbe_vlan_rx_add_vid(adapter->netdev, vid);
+}
+
+/**
+ * ixgbe_write_uc_addr_list - write unicast addresses to RAR table
+ * @netdev: network interface device structure
+ *
+ * Writes unicast address list to the RAR table.
+ * Returns: -ENOMEM on failure/insufficient address space
+ * 0 on no addresses written
+ * X on writing X addresses to the RAR table
+ **/
+static int ixgbe_write_uc_addr_list(struct net_device *netdev)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+ struct ixgbe_hw *hw = &adapter->hw;
+ unsigned int vfn = adapter->num_vfs;
+ unsigned int rar_entries = IXGBE_MAX_PF_MACVLANS;
+ int count = 0;
+
+ /* return ENOMEM indicating insufficient memory for addresses */
+ if (netdev_uc_count(netdev) > rar_entries)
+ return -ENOMEM;
+
+ if (!netdev_uc_empty(netdev) && rar_entries) {
+ struct netdev_hw_addr *ha;
+ /* return error if we do not support writing to RAR table */
+ if (!hw->mac.ops.set_rar)
+ return -ENOMEM;
+
+ netdev_for_each_uc_addr(ha, netdev) {
+ if (!rar_entries)
+ break;
+ hw->mac.ops.set_rar(hw, rar_entries--, ha->addr,
+ vfn, IXGBE_RAH_AV);
+ count++;
+ }
+ }
+ /* write the addresses in reverse order to avoid write combining */
+ for (; rar_entries > 0 ; rar_entries--)
+ hw->mac.ops.clear_rar(hw, rar_entries);
+
+ return count;
+}
+
+/**
+ * ixgbe_set_rx_mode - Unicast, Multicast and Promiscuous mode set
+ * @netdev: network interface device structure
+ *
+ * The set_rx_method entry point is called whenever the unicast/multicast
+ * address list or the network interface flags are updated. This routine is
+ * responsible for configuring the hardware for proper unicast, multicast and
+ * promiscuous mode.
+ **/
+void ixgbe_set_rx_mode(struct net_device *netdev)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+ struct ixgbe_hw *hw = &adapter->hw;
+ u32 fctrl, vmolr = IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE;
+ int count;
+
+ /* Check for Promiscuous and All Multicast modes */
+
+ fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
+
+ /* set all bits that we expect to always be set */
+ fctrl |= IXGBE_FCTRL_BAM;
+ fctrl |= IXGBE_FCTRL_DPF; /* discard pause frames when FC enabled */
+ fctrl |= IXGBE_FCTRL_PMCF;
+
+ /* clear the bits we are changing the status of */
+ fctrl &= ~(IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE);
+
+ if (netdev->flags & IFF_PROMISC) {
+ hw->addr_ctrl.user_set_promisc = true;
+ fctrl |= (IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE);
+ vmolr |= (IXGBE_VMOLR_ROPE | IXGBE_VMOLR_MPE);
+ /* don't hardware filter vlans in promisc mode */
+ ixgbe_vlan_filter_disable(adapter);
+ } else {
+ if (netdev->flags & IFF_ALLMULTI) {
+ fctrl |= IXGBE_FCTRL_MPE;
+ vmolr |= IXGBE_VMOLR_MPE;
+ } else {
+ /*
+ * Write addresses to the MTA, if the attempt fails
+ * then we should just turn on promiscuous mode so
+ * that we can at least receive multicast traffic
+ */
+ hw->mac.ops.update_mc_addr_list(hw, netdev);
+ vmolr |= IXGBE_VMOLR_ROMPE;
+ }
+ ixgbe_vlan_filter_enable(adapter);
+ hw->addr_ctrl.user_set_promisc = false;
+ /*
+ * Write addresses to available RAR registers, if there is not
+ * sufficient space to store all the addresses then enable
+ * unicast promiscuous mode
+ */
+ count = ixgbe_write_uc_addr_list(netdev);
+ if (count < 0) {
+ fctrl |= IXGBE_FCTRL_UPE;
+ vmolr |= IXGBE_VMOLR_ROPE;
+ }
+ }
+
+ if (adapter->num_vfs) {
+ ixgbe_restore_vf_multicasts(adapter);
+ vmolr |= IXGBE_READ_REG(hw, IXGBE_VMOLR(adapter->num_vfs)) &
+ ~(IXGBE_VMOLR_MPE | IXGBE_VMOLR_ROMPE |
+ IXGBE_VMOLR_ROPE);
+ IXGBE_WRITE_REG(hw, IXGBE_VMOLR(adapter->num_vfs), vmolr);
+ }
+
+ IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
+
+ if (netdev->features & NETIF_F_HW_VLAN_RX)
+ ixgbe_vlan_strip_enable(adapter);
+ else
+ ixgbe_vlan_strip_disable(adapter);
+}
+
+static void ixgbe_napi_enable_all(struct ixgbe_adapter *adapter)
+{
+ int q_idx;
+ struct ixgbe_q_vector *q_vector;
+ int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
+
+ /* legacy and MSI only use one vector */
+ if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
+ q_vectors = 1;
+
+ for (q_idx = 0; q_idx < q_vectors; q_idx++) {
+ struct napi_struct *napi;
+ q_vector = adapter->q_vector[q_idx];
+ napi = &q_vector->napi;
+ if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
+ if (!q_vector->rx.count || !q_vector->tx.count) {
+ if (q_vector->tx.count == 1)
+ napi->poll = &ixgbe_clean_txonly;
+ else if (q_vector->rx.count == 1)
+ napi->poll = &ixgbe_clean_rxonly;
+ }
+ }
+
+ napi_enable(napi);
+ }
+}
+
+static void ixgbe_napi_disable_all(struct ixgbe_adapter *adapter)
+{
+ int q_idx;
+ struct ixgbe_q_vector *q_vector;
+ int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
+
+ /* legacy and MSI only use one vector */
+ if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
+ q_vectors = 1;
+
+ for (q_idx = 0; q_idx < q_vectors; q_idx++) {
+ q_vector = adapter->q_vector[q_idx];
+ napi_disable(&q_vector->napi);
+ }
+}
+
+#ifdef CONFIG_IXGBE_DCB
+/*
+ * ixgbe_configure_dcb - Configure DCB hardware
+ * @adapter: ixgbe adapter struct
+ *
+ * This is called by the driver on open to configure the DCB hardware.
+ * This is also called by the gennetlink interface when reconfiguring
+ * the DCB state.
+ */
+static void ixgbe_configure_dcb(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
+
+ if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED)) {
+ if (hw->mac.type == ixgbe_mac_82598EB)
+ netif_set_gso_max_size(adapter->netdev, 65536);
+ return;
+ }
+
+ if (hw->mac.type == ixgbe_mac_82598EB)
+ netif_set_gso_max_size(adapter->netdev, 32768);
+
+
+ /* Enable VLAN tag insert/strip */
+ adapter->netdev->features |= NETIF_F_HW_VLAN_RX;
+
+ hw->mac.ops.set_vfta(&adapter->hw, 0, 0, true);
+
+ /* reconfigure the hardware */
+ if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE) {
+#ifdef CONFIG_FCOE
+ if (adapter->netdev->features & NETIF_F_FCOE_MTU)
+ max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
+#endif
+ ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame,
+ DCB_TX_CONFIG);
+ ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame,
+ DCB_RX_CONFIG);
+ ixgbe_dcb_hw_config(hw, &adapter->dcb_cfg);
+ } else {
+ struct net_device *dev = adapter->netdev;
+
+ if (adapter->ixgbe_ieee_ets)
+ dev->dcbnl_ops->ieee_setets(dev,
+ adapter->ixgbe_ieee_ets);
+ if (adapter->ixgbe_ieee_pfc)
+ dev->dcbnl_ops->ieee_setpfc(dev,
+ adapter->ixgbe_ieee_pfc);
+ }
+
+ /* Enable RSS Hash per TC */
+ if (hw->mac.type != ixgbe_mac_82598EB) {
+ int i;
+ u32 reg = 0;
+
+ for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
+ u8 msb = 0;
+ u8 cnt = adapter->netdev->tc_to_txq[i].count;
+
+ while (cnt >>= 1)
+ msb++;
+
+ reg |= msb << IXGBE_RQTC_SHIFT_TC(i);
+ }
+ IXGBE_WRITE_REG(hw, IXGBE_RQTC, reg);
+ }
+}
+
+#endif
+
+static void ixgbe_configure_pb(struct ixgbe_adapter *adapter)
+{
+ int hdrm = 0;
+ int num_tc = netdev_get_num_tc(adapter->netdev);
+ struct ixgbe_hw *hw = &adapter->hw;
+
+ if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
+ adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
+ hdrm = 64 << adapter->fdir_pballoc;
+
+ hw->mac.ops.set_rxpba(&adapter->hw, num_tc, hdrm, PBA_STRATEGY_EQUAL);
+}
+
+static void ixgbe_fdir_filter_restore(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ struct hlist_node *node, *node2;
+ struct ixgbe_fdir_filter *filter;
+
+ spin_lock(&adapter->fdir_perfect_lock);
+
+ if (!hlist_empty(&adapter->fdir_filter_list))
+ ixgbe_fdir_set_input_mask_82599(hw, &adapter->fdir_mask);
+
+ hlist_for_each_entry_safe(filter, node, node2,
+ &adapter->fdir_filter_list, fdir_node) {
+ ixgbe_fdir_write_perfect_filter_82599(hw,
+ &filter->filter,
+ filter->sw_idx,
+ (filter->action == IXGBE_FDIR_DROP_QUEUE) ?
+ IXGBE_FDIR_DROP_QUEUE :
+ adapter->rx_ring[filter->action]->reg_idx);
+ }
+
+ spin_unlock(&adapter->fdir_perfect_lock);
+}
+
+static void ixgbe_configure(struct ixgbe_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ struct ixgbe_hw *hw = &adapter->hw;
+ int i;
+
+ ixgbe_configure_pb(adapter);
+#ifdef CONFIG_IXGBE_DCB
+ ixgbe_configure_dcb(adapter);
+#endif
+
+ ixgbe_set_rx_mode(netdev);
+ ixgbe_restore_vlan(adapter);
+
+#ifdef IXGBE_FCOE
+ if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
+ ixgbe_configure_fcoe(adapter);
+
+#endif /* IXGBE_FCOE */
+ if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
+ for (i = 0; i < adapter->num_tx_queues; i++)
+ adapter->tx_ring[i]->atr_sample_rate =
+ adapter->atr_sample_rate;
+ ixgbe_init_fdir_signature_82599(hw, adapter->fdir_pballoc);
+ } else if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) {
+ ixgbe_init_fdir_perfect_82599(&adapter->hw,
+ adapter->fdir_pballoc);
+ ixgbe_fdir_filter_restore(adapter);
+ }
+ ixgbe_configure_virtualization(adapter);
+
+ ixgbe_configure_tx(adapter);
+ ixgbe_configure_rx(adapter);
+}
+
+static inline bool ixgbe_is_sfp(struct ixgbe_hw *hw)
+{
+ switch (hw->phy.type) {
+ case ixgbe_phy_sfp_avago:
+ case ixgbe_phy_sfp_ftl:
+ case ixgbe_phy_sfp_intel:
+ case ixgbe_phy_sfp_unknown:
+ case ixgbe_phy_sfp_passive_tyco:
+ case ixgbe_phy_sfp_passive_unknown:
+ case ixgbe_phy_sfp_active_unknown:
+ case ixgbe_phy_sfp_ftl_active:
+ return true;
+ default:
+ return false;
+ }
+}
+
+/**
+ * ixgbe_sfp_link_config - set up SFP+ link
+ * @adapter: pointer to private adapter struct
+ **/
+static void ixgbe_sfp_link_config(struct ixgbe_adapter *adapter)
+{
+ /*
+ * We are assuming the worst case scenerio here, and that
+ * is that an SFP was inserted/removed after the reset
+ * but before SFP detection was enabled. As such the best
+ * solution is to just start searching as soon as we start
+ */
+ if (adapter->hw.mac.type == ixgbe_mac_82598EB)
+ adapter->flags2 |= IXGBE_FLAG2_SEARCH_FOR_SFP;
+
+ adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET;
+}
+
+/**
+ * ixgbe_non_sfp_link_config - set up non-SFP+ link
+ * @hw: pointer to private hardware struct
+ *
+ * Returns 0 on success, negative on failure
+ **/
+static int ixgbe_non_sfp_link_config(struct ixgbe_hw *hw)
+{
+ u32 autoneg;
+ bool negotiation, link_up = false;
+ u32 ret = IXGBE_ERR_LINK_SETUP;
+
+ if (hw->mac.ops.check_link)
+ ret = hw->mac.ops.check_link(hw, &autoneg, &link_up, false);
+
+ if (ret)
+ goto link_cfg_out;
+
+ autoneg = hw->phy.autoneg_advertised;
+ if ((!autoneg) && (hw->mac.ops.get_link_capabilities))
+ ret = hw->mac.ops.get_link_capabilities(hw, &autoneg,
+ &negotiation);
+ if (ret)
+ goto link_cfg_out;
+
+ if (hw->mac.ops.setup_link)
+ ret = hw->mac.ops.setup_link(hw, autoneg, negotiation, link_up);
+link_cfg_out:
+ return ret;
+}
+
+static void ixgbe_setup_gpie(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ u32 gpie = 0;
+
+ if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
+ gpie = IXGBE_GPIE_MSIX_MODE | IXGBE_GPIE_PBA_SUPPORT |
+ IXGBE_GPIE_OCD;
+ gpie |= IXGBE_GPIE_EIAME;
+ /*
+ * use EIAM to auto-mask when MSI-X interrupt is asserted
+ * this saves a register write for every interrupt
+ */
+ switch (hw->mac.type) {
+ case ixgbe_mac_82598EB:
+ IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE);
+ break;
+ case ixgbe_mac_82599EB:
+ case ixgbe_mac_X540:
+ default:
+ IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(0), 0xFFFFFFFF);
+ IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(1), 0xFFFFFFFF);
+ break;
+ }
+ } else {
+ /* legacy interrupts, use EIAM to auto-mask when reading EICR,
+ * specifically only auto mask tx and rx interrupts */
+ IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE);
+ }
+
+ /* XXX: to interrupt immediately for EICS writes, enable this */
+ /* gpie |= IXGBE_GPIE_EIMEN; */
+
+ if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
+ gpie &= ~IXGBE_GPIE_VTMODE_MASK;
+ gpie |= IXGBE_GPIE_VTMODE_64;
+ }
+
+ /* Enable fan failure interrupt */
+ if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE)
+ gpie |= IXGBE_SDP1_GPIEN;
+
+ if (hw->mac.type == ixgbe_mac_82599EB) {
+ gpie |= IXGBE_SDP1_GPIEN;
+ gpie |= IXGBE_SDP2_GPIEN;
+ }
+
+ IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
+}
+
+static int ixgbe_up_complete(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ int err;
+ u32 ctrl_ext;
+
+ ixgbe_get_hw_control(adapter);
+ ixgbe_setup_gpie(adapter);
+
+ if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
+ ixgbe_configure_msix(adapter);
+ else
+ ixgbe_configure_msi_and_legacy(adapter);
+
+ /* enable the optics for both mult-speed fiber and 82599 SFP+ fiber */
+ if (hw->mac.ops.enable_tx_laser &&
+ ((hw->phy.multispeed_fiber) ||
+ ((hw->mac.ops.get_media_type(hw) == ixgbe_media_type_fiber) &&
+ (hw->mac.type == ixgbe_mac_82599EB))))
+ hw->mac.ops.enable_tx_laser(hw);
+
+ clear_bit(__IXGBE_DOWN, &adapter->state);
+ ixgbe_napi_enable_all(adapter);
+
+ if (ixgbe_is_sfp(hw)) {
+ ixgbe_sfp_link_config(adapter);
+ } else {
+ err = ixgbe_non_sfp_link_config(hw);
+ if (err)
+ e_err(probe, "link_config FAILED %d\n", err);
+ }
+
+ /* clear any pending interrupts, may auto mask */
+ IXGBE_READ_REG(hw, IXGBE_EICR);
+ ixgbe_irq_enable(adapter, true, true);
+
+ /*
+ * If this adapter has a fan, check to see if we had a failure
+ * before we enabled the interrupt.
+ */
+ if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
+ u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
+ if (esdp & IXGBE_ESDP_SDP1)
+ e_crit(drv, "Fan has stopped, replace the adapter\n");
+ }
+
+ /* enable transmits */
+ netif_tx_start_all_queues(adapter->netdev);
+
+ /* bring the link up in the watchdog, this could race with our first
+ * link up interrupt but shouldn't be a problem */
+ adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
+ adapter->link_check_timeout = jiffies;
+ mod_timer(&adapter->service_timer, jiffies);
+
+ /* Set PF Reset Done bit so PF/VF Mail Ops can work */
+ ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT);
+ ctrl_ext |= IXGBE_CTRL_EXT_PFRSTD;
+ IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext);
+
+ return 0;
+}
+
+void ixgbe_reinit_locked(struct ixgbe_adapter *adapter)
+{
+ WARN_ON(in_interrupt());
+ /* put off any impending NetWatchDogTimeout */
+ adapter->netdev->trans_start = jiffies;
+
+ while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
+ usleep_range(1000, 2000);
+ ixgbe_down(adapter);
+ /*
+ * If SR-IOV enabled then wait a bit before bringing the adapter
+ * back up to give the VFs time to respond to the reset. The
+ * two second wait is based upon the watchdog timer cycle in
+ * the VF driver.
+ */
+ if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
+ msleep(2000);
+ ixgbe_up(adapter);
+ clear_bit(__IXGBE_RESETTING, &adapter->state);
+}
+
+int ixgbe_up(struct ixgbe_adapter *adapter)
+{
+ /* hardware has been reset, we need to reload some things */
+ ixgbe_configure(adapter);
+
+ return ixgbe_up_complete(adapter);
+}
+
+void ixgbe_reset(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ int err;
+
+ /* lock SFP init bit to prevent race conditions with the watchdog */
+ while (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state))
+ usleep_range(1000, 2000);
+
+ /* clear all SFP and link config related flags while holding SFP_INIT */
+ adapter->flags2 &= ~(IXGBE_FLAG2_SEARCH_FOR_SFP |
+ IXGBE_FLAG2_SFP_NEEDS_RESET);
+ adapter->flags &= ~IXGBE_FLAG_NEED_LINK_CONFIG;
+
+ err = hw->mac.ops.init_hw(hw);
+ switch (err) {
+ case 0:
+ case IXGBE_ERR_SFP_NOT_PRESENT:
+ case IXGBE_ERR_SFP_NOT_SUPPORTED:
+ break;
+ case IXGBE_ERR_MASTER_REQUESTS_PENDING:
+ e_dev_err("master disable timed out\n");
+ break;
+ case IXGBE_ERR_EEPROM_VERSION:
+ /* We are running on a pre-production device, log a warning */
+ e_dev_warn("This device is a pre-production adapter/LOM. "
+ "Please be aware there may be issuesassociated with "
+ "your hardware. If you are experiencing problems "
+ "please contact your Intel or hardware "
+ "representative who provided you with this "
+ "hardware.\n");
+ break;
+ default:
+ e_dev_err("Hardware Error: %d\n", err);
+ }
+
+ clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state);
+
+ /* reprogram the RAR[0] in case user changed it. */
+ hw->mac.ops.set_rar(hw, 0, hw->mac.addr, adapter->num_vfs,
+ IXGBE_RAH_AV);
+}
+
+/**
+ * ixgbe_clean_rx_ring - Free Rx Buffers per Queue
+ * @rx_ring: ring to free buffers from
+ **/
+static void ixgbe_clean_rx_ring(struct ixgbe_ring *rx_ring)
+{
+ struct device *dev = rx_ring->dev;
+ unsigned long size;
+ u16 i;
+
+ /* ring already cleared, nothing to do */
+ if (!rx_ring->rx_buffer_info)
+ return;
+
+ /* Free all the Rx ring sk_buffs */
+ for (i = 0; i < rx_ring->count; i++) {
+ struct ixgbe_rx_buffer *rx_buffer_info;
+
+ rx_buffer_info = &rx_ring->rx_buffer_info[i];
+ if (rx_buffer_info->dma) {
+ dma_unmap_single(rx_ring->dev, rx_buffer_info->dma,
+ rx_ring->rx_buf_len,
+ DMA_FROM_DEVICE);
+ rx_buffer_info->dma = 0;
+ }
+ if (rx_buffer_info->skb) {
+ struct sk_buff *skb = rx_buffer_info->skb;
+ rx_buffer_info->skb = NULL;
+ do {
+ struct sk_buff *this = skb;
+ if (IXGBE_RSC_CB(this)->delay_unmap) {
+ dma_unmap_single(dev,
+ IXGBE_RSC_CB(this)->dma,
+ rx_ring->rx_buf_len,
+ DMA_FROM_DEVICE);
+ IXGBE_RSC_CB(this)->dma = 0;
+ IXGBE_RSC_CB(skb)->delay_unmap = false;
+ }
+ skb = skb->prev;
+ dev_kfree_skb(this);
+ } while (skb);
+ }
+ if (!rx_buffer_info->page)
+ continue;
+ if (rx_buffer_info->page_dma) {
+ dma_unmap_page(dev, rx_buffer_info->page_dma,
+ PAGE_SIZE / 2, DMA_FROM_DEVICE);
+ rx_buffer_info->page_dma = 0;
+ }
+ put_page(rx_buffer_info->page);
+ rx_buffer_info->page = NULL;
+ rx_buffer_info->page_offset = 0;
+ }
+
+ size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count;
+ memset(rx_ring->rx_buffer_info, 0, size);
+
+ /* Zero out the descriptor ring */
+ memset(rx_ring->desc, 0, rx_ring->size);
+
+ rx_ring->next_to_clean = 0;
+ rx_ring->next_to_use = 0;
+}
+
+/**
+ * ixgbe_clean_tx_ring - Free Tx Buffers
+ * @tx_ring: ring to be cleaned
+ **/
+static void ixgbe_clean_tx_ring(struct ixgbe_ring *tx_ring)
+{
+ struct ixgbe_tx_buffer *tx_buffer_info;
+ unsigned long size;
+ u16 i;
+
+ /* ring already cleared, nothing to do */
+ if (!tx_ring->tx_buffer_info)
+ return;
+
+ /* Free all the Tx ring sk_buffs */
+ for (i = 0; i < tx_ring->count; i++) {
+ tx_buffer_info = &tx_ring->tx_buffer_info[i];
+ ixgbe_unmap_and_free_tx_resource(tx_ring, tx_buffer_info);
+ }
+
+ size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count;
+ memset(tx_ring->tx_buffer_info, 0, size);
+
+ /* Zero out the descriptor ring */
+ memset(tx_ring->desc, 0, tx_ring->size);
+
+ tx_ring->next_to_use = 0;
+ tx_ring->next_to_clean = 0;
+}
+
+/**
+ * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues
+ * @adapter: board private structure
+ **/
+static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter *adapter)
+{
+ int i;
+
+ for (i = 0; i < adapter->num_rx_queues; i++)
+ ixgbe_clean_rx_ring(adapter->rx_ring[i]);
+}
+
+/**
+ * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues
+ * @adapter: board private structure
+ **/
+static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter *adapter)
+{
+ int i;
+
+ for (i = 0; i < adapter->num_tx_queues; i++)
+ ixgbe_clean_tx_ring(adapter->tx_ring[i]);
+}
+
+static void ixgbe_fdir_filter_exit(struct ixgbe_adapter *adapter)
+{
+ struct hlist_node *node, *node2;
+ struct ixgbe_fdir_filter *filter;
+
+ spin_lock(&adapter->fdir_perfect_lock);
+
+ hlist_for_each_entry_safe(filter, node, node2,
+ &adapter->fdir_filter_list, fdir_node) {
+ hlist_del(&filter->fdir_node);
+ kfree(filter);
+ }
+ adapter->fdir_filter_count = 0;
+
+ spin_unlock(&adapter->fdir_perfect_lock);
+}
+
+void ixgbe_down(struct ixgbe_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ struct ixgbe_hw *hw = &adapter->hw;
+ u32 rxctrl;
+ int i;
+ int num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
+
+ /* signal that we are down to the interrupt handler */
+ set_bit(__IXGBE_DOWN, &adapter->state);
+
+ /* disable receives */
+ rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
+ IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN);
+
+ /* disable all enabled rx queues */
+ for (i = 0; i < adapter->num_rx_queues; i++)
+ /* this call also flushes the previous write */
+ ixgbe_disable_rx_queue(adapter, adapter->rx_ring[i]);
+
+ usleep_range(10000, 20000);
+
+ netif_tx_stop_all_queues(netdev);
+
+ /* call carrier off first to avoid false dev_watchdog timeouts */
+ netif_carrier_off(netdev);
+ netif_tx_disable(netdev);
+
+ ixgbe_irq_disable(adapter);
+
+ ixgbe_napi_disable_all(adapter);
+
+ adapter->flags2 &= ~(IXGBE_FLAG2_FDIR_REQUIRES_REINIT |
+ IXGBE_FLAG2_RESET_REQUESTED);
+ adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE;
+
+ del_timer_sync(&adapter->service_timer);
+
+ /* disable receive for all VFs and wait one second */
+ if (adapter->num_vfs) {
+ /* ping all the active vfs to let them know we are going down */
+ ixgbe_ping_all_vfs(adapter);
+
+ /* Disable all VFTE/VFRE TX/RX */
+ ixgbe_disable_tx_rx(adapter);
+
+ /* Mark all the VFs as inactive */
+ for (i = 0 ; i < adapter->num_vfs; i++)
+ adapter->vfinfo[i].clear_to_send = 0;
+ }
+
+ /* Cleanup the affinity_hint CPU mask memory and callback */
+ for (i = 0; i < num_q_vectors; i++) {
+ struct ixgbe_q_vector *q_vector = adapter->q_vector[i];
+ /* clear the affinity_mask in the IRQ descriptor */
+ irq_set_affinity_hint(adapter->msix_entries[i]. vector, NULL);
+ /* release the CPU mask memory */
+ free_cpumask_var(q_vector->affinity_mask);
+ }
+
+ /* disable transmits in the hardware now that interrupts are off */
+ for (i = 0; i < adapter->num_tx_queues; i++) {
+ u8 reg_idx = adapter->tx_ring[i]->reg_idx;
+ IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), IXGBE_TXDCTL_SWFLSH);
+ }
+
+ /* Disable the Tx DMA engine on 82599 and X540 */
+ switch (hw->mac.type) {
+ case ixgbe_mac_82599EB:
+ case ixgbe_mac_X540:
+ IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL,
+ (IXGBE_READ_REG(hw, IXGBE_DMATXCTL) &
+ ~IXGBE_DMATXCTL_TE));
+ break;
+ default:
+ break;
+ }
+
+ if (!pci_channel_offline(adapter->pdev))
+ ixgbe_reset(adapter);
+
+ /* power down the optics for multispeed fiber and 82599 SFP+ fiber */
+ if (hw->mac.ops.disable_tx_laser &&
+ ((hw->phy.multispeed_fiber) ||
+ ((hw->mac.ops.get_media_type(hw) == ixgbe_media_type_fiber) &&
+ (hw->mac.type == ixgbe_mac_82599EB))))
+ hw->mac.ops.disable_tx_laser(hw);
+
+ ixgbe_clean_all_tx_rings(adapter);
+ ixgbe_clean_all_rx_rings(adapter);
+
+#ifdef CONFIG_IXGBE_DCA
+ /* since we reset the hardware DCA settings were cleared */
+ ixgbe_setup_dca(adapter);
+#endif
+}
+
+/**
+ * ixgbe_poll - NAPI Rx polling callback
+ * @napi: structure for representing this polling device
+ * @budget: how many packets driver is allowed to clean
+ *
+ * This function is used for legacy and MSI, NAPI mode
+ **/
+static int ixgbe_poll(struct napi_struct *napi, int budget)
+{
+ struct ixgbe_q_vector *q_vector =
+ container_of(napi, struct ixgbe_q_vector, napi);
+ struct ixgbe_adapter *adapter = q_vector->adapter;
+ int tx_clean_complete, work_done = 0;
+
+#ifdef CONFIG_IXGBE_DCA
+ if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
+ ixgbe_update_dca(q_vector);
+#endif
+
+ tx_clean_complete = ixgbe_clean_tx_irq(q_vector, adapter->tx_ring[0]);
+ ixgbe_clean_rx_irq(q_vector, adapter->rx_ring[0], &work_done, budget);
+
+ if (!tx_clean_complete)
+ work_done = budget;
+
+ /* If budget not fully consumed, exit the polling mode */
+ if (work_done < budget) {
+ napi_complete(napi);
+ if (adapter->rx_itr_setting & 1)
+ ixgbe_set_itr(q_vector);
+ if (!test_bit(__IXGBE_DOWN, &adapter->state))
+ ixgbe_irq_enable_queues(adapter, IXGBE_EIMS_RTX_QUEUE);
+ }
+ return work_done;
+}
+
+/**
+ * ixgbe_tx_timeout - Respond to a Tx Hang
+ * @netdev: network interface device structure
+ **/
+static void ixgbe_tx_timeout(struct net_device *netdev)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+
+ /* Do the reset outside of interrupt context */
+ ixgbe_tx_timeout_reset(adapter);
+}
+
+/**
+ * ixgbe_set_rss_queues: Allocate queues for RSS
+ * @adapter: board private structure to initialize
+ *
+ * This is our "base" multiqueue mode. RSS (Receive Side Scaling) will try
+ * to allocate one Rx queue per CPU, and if available, one Tx queue per CPU.
+ *
+ **/
+static inline bool ixgbe_set_rss_queues(struct ixgbe_adapter *adapter)
+{
+ bool ret = false;
+ struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_RSS];
+
+ if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
+ f->mask = 0xF;
+ adapter->num_rx_queues = f->indices;
+ adapter->num_tx_queues = f->indices;
+ ret = true;
+ } else {
+ ret = false;
+ }
+
+ return ret;
+}
+
+/**
+ * ixgbe_set_fdir_queues: Allocate queues for Flow Director
+ * @adapter: board private structure to initialize
+ *
+ * Flow Director is an advanced Rx filter, attempting to get Rx flows back
+ * to the original CPU that initiated the Tx session. This runs in addition
+ * to RSS, so if a packet doesn't match an FDIR filter, we can still spread the
+ * Rx load across CPUs using RSS.
+ *
+ **/
+static inline bool ixgbe_set_fdir_queues(struct ixgbe_adapter *adapter)
+{
+ bool ret = false;
+ struct ixgbe_ring_feature *f_fdir = &adapter->ring_feature[RING_F_FDIR];
+
+ f_fdir->indices = min((int)num_online_cpus(), f_fdir->indices);
+ f_fdir->mask = 0;
+
+ /* Flow Director must have RSS enabled */
+ if ((adapter->flags & IXGBE_FLAG_RSS_ENABLED) &&
+ (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE)) {
+ adapter->num_tx_queues = f_fdir->indices;
+ adapter->num_rx_queues = f_fdir->indices;
+ ret = true;
+ } else {
+ adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
+ }
+ return ret;
+}
+
+#ifdef IXGBE_FCOE
+/**
+ * ixgbe_set_fcoe_queues: Allocate queues for Fiber Channel over Ethernet (FCoE)
+ * @adapter: board private structure to initialize
+ *
+ * FCoE RX FCRETA can use up to 8 rx queues for up to 8 different exchanges.
+ * The ring feature mask is not used as a mask for FCoE, as it can take any 8
+ * rx queues out of the max number of rx queues, instead, it is used as the
+ * index of the first rx queue used by FCoE.
+ *
+ **/
+static inline bool ixgbe_set_fcoe_queues(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_FCOE];
+
+ if (!(adapter->flags & IXGBE_FLAG_FCOE_ENABLED))
+ return false;
+
+ f->indices = min((int)num_online_cpus(), f->indices);
+
+ adapter->num_rx_queues = 1;
+ adapter->num_tx_queues = 1;
+
+ if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
+ e_info(probe, "FCoE enabled with RSS\n");
+ if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE)
+ ixgbe_set_fdir_queues(adapter);
+ else
+ ixgbe_set_rss_queues(adapter);
+ }
+
+ /* adding FCoE rx rings to the end */
+ f->mask = adapter->num_rx_queues;
+ adapter->num_rx_queues += f->indices;
+ adapter->num_tx_queues += f->indices;
+
+ return true;
+}
+#endif /* IXGBE_FCOE */
+
+/* Artificial max queue cap per traffic class in DCB mode */
+#define DCB_QUEUE_CAP 8
+
+#ifdef CONFIG_IXGBE_DCB
+static inline bool ixgbe_set_dcb_queues(struct ixgbe_adapter *adapter)
+{
+ int per_tc_q, q, i, offset = 0;
+ struct net_device *dev = adapter->netdev;
+ int tcs = netdev_get_num_tc(dev);
+
+ if (!tcs)
+ return false;
+
+ /* Map queue offset and counts onto allocated tx queues */
+ per_tc_q = min(dev->num_tx_queues / tcs, (unsigned int)DCB_QUEUE_CAP);
+ q = min((int)num_online_cpus(), per_tc_q);
+
+ for (i = 0; i < tcs; i++) {
+ netdev_set_prio_tc_map(dev, i, i);
+ netdev_set_tc_queue(dev, i, q, offset);
+ offset += q;
+ }
+
+ adapter->num_tx_queues = q * tcs;
+ adapter->num_rx_queues = q * tcs;
+
+#ifdef IXGBE_FCOE
+ /* FCoE enabled queues require special configuration indexed
+ * by feature specific indices and mask. Here we map FCoE
+ * indices onto the DCB queue pairs allowing FCoE to own
+ * configuration later.
+ */
+ if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
+ int tc;
+ struct ixgbe_ring_feature *f =
+ &adapter->ring_feature[RING_F_FCOE];
+
+ tc = netdev_get_prio_tc_map(dev, adapter->fcoe.up);
+ f->indices = dev->tc_to_txq[tc].count;
+ f->mask = dev->tc_to_txq[tc].offset;
+ }
+#endif
+
+ return true;
+}
+#endif
+
+/**
+ * ixgbe_set_sriov_queues: Allocate queues for IOV use
+ * @adapter: board private structure to initialize
+ *
+ * IOV doesn't actually use anything, so just NAK the
+ * request for now and let the other queue routines
+ * figure out what to do.
+ */
+static inline bool ixgbe_set_sriov_queues(struct ixgbe_adapter *adapter)
+{
+ return false;
+}
+
+/*
+ * ixgbe_set_num_queues: Allocate queues for device, feature dependent
+ * @adapter: board private structure to initialize
+ *
+ * This is the top level queue allocation routine. The order here is very
+ * important, starting with the "most" number of features turned on at once,
+ * and ending with the smallest set of features. This way large combinations
+ * can be allocated if they're turned on, and smaller combinations are the
+ * fallthrough conditions.
+ *
+ **/
+static int ixgbe_set_num_queues(struct ixgbe_adapter *adapter)
+{
+ /* Start with base case */
+ adapter->num_rx_queues = 1;
+ adapter->num_tx_queues = 1;
+ adapter->num_rx_pools = adapter->num_rx_queues;
+ adapter->num_rx_queues_per_pool = 1;
+
+ if (ixgbe_set_sriov_queues(adapter))
+ goto done;
+
+#ifdef CONFIG_IXGBE_DCB
+ if (ixgbe_set_dcb_queues(adapter))
+ goto done;
+
+#endif
+#ifdef IXGBE_FCOE
+ if (ixgbe_set_fcoe_queues(adapter))
+ goto done;
+
+#endif /* IXGBE_FCOE */
+ if (ixgbe_set_fdir_queues(adapter))
+ goto done;
+
+ if (ixgbe_set_rss_queues(adapter))
+ goto done;
+
+ /* fallback to base case */
+ adapter->num_rx_queues = 1;
+ adapter->num_tx_queues = 1;
+
+done:
+ /* Notify the stack of the (possibly) reduced queue counts. */
+ netif_set_real_num_tx_queues(adapter->netdev, adapter->num_tx_queues);
+ return netif_set_real_num_rx_queues(adapter->netdev,
+ adapter->num_rx_queues);
+}
+
+static void ixgbe_acquire_msix_vectors(struct ixgbe_adapter *adapter,
+ int vectors)
+{
+ int err, vector_threshold;
+
+ /* We'll want at least 3 (vector_threshold):
+ * 1) TxQ[0] Cleanup
+ * 2) RxQ[0] Cleanup
+ * 3) Other (Link Status Change, etc.)
+ * 4) TCP Timer (optional)
+ */
+ vector_threshold = MIN_MSIX_COUNT;
+
+ /* The more we get, the more we will assign to Tx/Rx Cleanup
+ * for the separate queues...where Rx Cleanup >= Tx Cleanup.
+ * Right now, we simply care about how many we'll get; we'll
+ * set them up later while requesting irq's.
+ */
+ while (vectors >= vector_threshold) {
+ err = pci_enable_msix(adapter->pdev, adapter->msix_entries,
+ vectors);
+ if (!err) /* Success in acquiring all requested vectors. */
+ break;
+ else if (err < 0)
+ vectors = 0; /* Nasty failure, quit now */
+ else /* err == number of vectors we should try again with */
+ vectors = err;
+ }
+
+ if (vectors < vector_threshold) {
+ /* Can't allocate enough MSI-X interrupts? Oh well.
+ * This just means we'll go with either a single MSI
+ * vector or fall back to legacy interrupts.
+ */
+ netif_printk(adapter, hw, KERN_DEBUG, adapter->netdev,
+ "Unable to allocate MSI-X interrupts\n");
+ adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
+ kfree(adapter->msix_entries);
+ adapter->msix_entries = NULL;
+ } else {
+ adapter->flags |= IXGBE_FLAG_MSIX_ENABLED; /* Woot! */
+ /*
+ * Adjust for only the vectors we'll use, which is minimum
+ * of max_msix_q_vectors + NON_Q_VECTORS, or the number of
+ * vectors we were allocated.
+ */
+ adapter->num_msix_vectors = min(vectors,
+ adapter->max_msix_q_vectors + NON_Q_VECTORS);
+ }
+}
+
+/**
+ * ixgbe_cache_ring_rss - Descriptor ring to register mapping for RSS
+ * @adapter: board private structure to initialize
+ *
+ * Cache the descriptor ring offsets for RSS to the assigned rings.
+ *
+ **/
+static inline bool ixgbe_cache_ring_rss(struct ixgbe_adapter *adapter)
+{
+ int i;
+
+ if (!(adapter->flags & IXGBE_FLAG_RSS_ENABLED))
+ return false;
+
+ for (i = 0; i < adapter->num_rx_queues; i++)
+ adapter->rx_ring[i]->reg_idx = i;
+ for (i = 0; i < adapter->num_tx_queues; i++)
+ adapter->tx_ring[i]->reg_idx = i;
+
+ return true;
+}
+
+#ifdef CONFIG_IXGBE_DCB
+
+/* ixgbe_get_first_reg_idx - Return first register index associated with ring */
+static void ixgbe_get_first_reg_idx(struct ixgbe_adapter *adapter, u8 tc,
+ unsigned int *tx, unsigned int *rx)
+{
+ struct net_device *dev = adapter->netdev;
+ struct ixgbe_hw *hw = &adapter->hw;
+ u8 num_tcs = netdev_get_num_tc(dev);
+
+ *tx = 0;
+ *rx = 0;
+
+ switch (hw->mac.type) {
+ case ixgbe_mac_82598EB:
+ *tx = tc << 2;
+ *rx = tc << 3;
+ break;
+ case ixgbe_mac_82599EB:
+ case ixgbe_mac_X540:
+ if (num_tcs == 8) {
+ if (tc < 3) {
+ *tx = tc << 5;
+ *rx = tc << 4;
+ } else if (tc < 5) {
+ *tx = ((tc + 2) << 4);
+ *rx = tc << 4;
+ } else if (tc < num_tcs) {
+ *tx = ((tc + 8) << 3);
+ *rx = tc << 4;
+ }
+ } else if (num_tcs == 4) {
+ *rx = tc << 5;
+ switch (tc) {
+ case 0:
+ *tx = 0;
+ break;
+ case 1:
+ *tx = 64;
+ break;
+ case 2:
+ *tx = 96;
+ break;
+ case 3:
+ *tx = 112;
+ break;
+ default:
+ break;
+ }
+ }
+ break;
+ default:
+ break;
+ }
+}
+
+/**
+ * ixgbe_cache_ring_dcb - Descriptor ring to register mapping for DCB
+ * @adapter: board private structure to initialize
+ *
+ * Cache the descriptor ring offsets for DCB to the assigned rings.
+ *
+ **/
+static inline bool ixgbe_cache_ring_dcb(struct ixgbe_adapter *adapter)
+{
+ struct net_device *dev = adapter->netdev;
+ int i, j, k;
+ u8 num_tcs = netdev_get_num_tc(dev);
+
+ if (!num_tcs)
+ return false;
+
+ for (i = 0, k = 0; i < num_tcs; i++) {
+ unsigned int tx_s, rx_s;
+ u16 count = dev->tc_to_txq[i].count;
+
+ ixgbe_get_first_reg_idx(adapter, i, &tx_s, &rx_s);
+ for (j = 0; j < count; j++, k++) {
+ adapter->tx_ring[k]->reg_idx = tx_s + j;
+ adapter->rx_ring[k]->reg_idx = rx_s + j;
+ adapter->tx_ring[k]->dcb_tc = i;
+ adapter->rx_ring[k]->dcb_tc = i;
+ }
+ }
+
+ return true;
+}
+#endif
+
+/**
+ * ixgbe_cache_ring_fdir - Descriptor ring to register mapping for Flow Director
+ * @adapter: board private structure to initialize
+ *
+ * Cache the descriptor ring offsets for Flow Director to the assigned rings.
+ *
+ **/
+static inline bool ixgbe_cache_ring_fdir(struct ixgbe_adapter *adapter)
+{
+ int i;
+ bool ret = false;
+
+ if ((adapter->flags & IXGBE_FLAG_RSS_ENABLED) &&
+ (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE)) {
+ for (i = 0; i < adapter->num_rx_queues; i++)
+ adapter->rx_ring[i]->reg_idx = i;
+ for (i = 0; i < adapter->num_tx_queues; i++)
+ adapter->tx_ring[i]->reg_idx = i;
+ ret = true;
+ }
+
+ return ret;
+}
+
+#ifdef IXGBE_FCOE
+/**
+ * ixgbe_cache_ring_fcoe - Descriptor ring to register mapping for the FCoE
+ * @adapter: board private structure to initialize
+ *
+ * Cache the descriptor ring offsets for FCoE mode to the assigned rings.
+ *
+ */
+static inline bool ixgbe_cache_ring_fcoe(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_FCOE];
+ int i;
+ u8 fcoe_rx_i = 0, fcoe_tx_i = 0;
+
+ if (!(adapter->flags & IXGBE_FLAG_FCOE_ENABLED))
+ return false;
+
+ if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
+ if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE)
+ ixgbe_cache_ring_fdir(adapter);
+ else
+ ixgbe_cache_ring_rss(adapter);
+
+ fcoe_rx_i = f->mask;
+ fcoe_tx_i = f->mask;
+ }
+ for (i = 0; i < f->indices; i++, fcoe_rx_i++, fcoe_tx_i++) {
+ adapter->rx_ring[f->mask + i]->reg_idx = fcoe_rx_i;
+ adapter->tx_ring[f->mask + i]->reg_idx = fcoe_tx_i;
+ }
+ return true;
+}
+
+#endif /* IXGBE_FCOE */
+/**
+ * ixgbe_cache_ring_sriov - Descriptor ring to register mapping for sriov
+ * @adapter: board private structure to initialize
+ *
+ * SR-IOV doesn't use any descriptor rings but changes the default if
+ * no other mapping is used.
+ *
+ */
+static inline bool ixgbe_cache_ring_sriov(struct ixgbe_adapter *adapter)
+{
+ adapter->rx_ring[0]->reg_idx = adapter->num_vfs * 2;
+ adapter->tx_ring[0]->reg_idx = adapter->num_vfs * 2;
+ if (adapter->num_vfs)
+ return true;
+ else
+ return false;
+}
+
+/**
+ * ixgbe_cache_ring_register - Descriptor ring to register mapping
+ * @adapter: board private structure to initialize
+ *
+ * Once we know the feature-set enabled for the device, we'll cache
+ * the register offset the descriptor ring is assigned to.
+ *
+ * Note, the order the various feature calls is important. It must start with
+ * the "most" features enabled at the same time, then trickle down to the
+ * least amount of features turned on at once.
+ **/
+static void ixgbe_cache_ring_register(struct ixgbe_adapter *adapter)
+{
+ /* start with default case */
+ adapter->rx_ring[0]->reg_idx = 0;
+ adapter->tx_ring[0]->reg_idx = 0;
+
+ if (ixgbe_cache_ring_sriov(adapter))
+ return;
+
+#ifdef CONFIG_IXGBE_DCB
+ if (ixgbe_cache_ring_dcb(adapter))
+ return;
+#endif
+
+#ifdef IXGBE_FCOE
+ if (ixgbe_cache_ring_fcoe(adapter))
+ return;
+#endif /* IXGBE_FCOE */
+
+ if (ixgbe_cache_ring_fdir(adapter))
+ return;
+
+ if (ixgbe_cache_ring_rss(adapter))
+ return;
+}
+
+/**
+ * ixgbe_alloc_queues - Allocate memory for all rings
+ * @adapter: board private structure to initialize
+ *
+ * We allocate one ring per queue at run-time since we don't know the
+ * number of queues at compile-time. The polling_netdev array is
+ * intended for Multiqueue, but should work fine with a single queue.
+ **/
+static int ixgbe_alloc_queues(struct ixgbe_adapter *adapter)
+{
+ int rx = 0, tx = 0, nid = adapter->node;
+
+ if (nid < 0 || !node_online(nid))
+ nid = first_online_node;
+
+ for (; tx < adapter->num_tx_queues; tx++) {
+ struct ixgbe_ring *ring;
+
+ ring = kzalloc_node(sizeof(*ring), GFP_KERNEL, nid);
+ if (!ring)
+ ring = kzalloc(sizeof(*ring), GFP_KERNEL);
+ if (!ring)
+ goto err_allocation;
+ ring->count = adapter->tx_ring_count;
+ ring->queue_index = tx;
+ ring->numa_node = nid;
+ ring->dev = &adapter->pdev->dev;
+ ring->netdev = adapter->netdev;
+
+ adapter->tx_ring[tx] = ring;
+ }
+
+ for (; rx < adapter->num_rx_queues; rx++) {
+ struct ixgbe_ring *ring;
+
+ ring = kzalloc_node(sizeof(*ring), GFP_KERNEL, nid);
+ if (!ring)
+ ring = kzalloc(sizeof(*ring), GFP_KERNEL);
+ if (!ring)
+ goto err_allocation;
+ ring->count = adapter->rx_ring_count;
+ ring->queue_index = rx;
+ ring->numa_node = nid;
+ ring->dev = &adapter->pdev->dev;
+ ring->netdev = adapter->netdev;
+
+ adapter->rx_ring[rx] = ring;
+ }
+
+ ixgbe_cache_ring_register(adapter);
+
+ return 0;
+
+err_allocation:
+ while (tx)
+ kfree(adapter->tx_ring[--tx]);
+
+ while (rx)
+ kfree(adapter->rx_ring[--rx]);
+ return -ENOMEM;
+}
+
+/**
+ * ixgbe_set_interrupt_capability - set MSI-X or MSI if supported
+ * @adapter: board private structure to initialize
+ *
+ * Attempt to configure the interrupts using the best available
+ * capabilities of the hardware and the kernel.
+ **/
+static int ixgbe_set_interrupt_capability(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ int err = 0;
+ int vector, v_budget;
+
+ /*
+ * It's easy to be greedy for MSI-X vectors, but it really
+ * doesn't do us much good if we have a lot more vectors
+ * than CPU's. So let's be conservative and only ask for
+ * (roughly) the same number of vectors as there are CPU's.
+ */
+ v_budget = min(adapter->num_rx_queues + adapter->num_tx_queues,
+ (int)num_online_cpus()) + NON_Q_VECTORS;
+
+ /*
+ * At the same time, hardware can only support a maximum of
+ * hw.mac->max_msix_vectors vectors. With features
+ * such as RSS and VMDq, we can easily surpass the number of Rx and Tx
+ * descriptor queues supported by our device. Thus, we cap it off in
+ * those rare cases where the cpu count also exceeds our vector limit.
+ */
+ v_budget = min(v_budget, (int)hw->mac.max_msix_vectors);
+
+ /* A failure in MSI-X entry allocation isn't fatal, but it does
+ * mean we disable MSI-X capabilities of the adapter. */
+ adapter->msix_entries = kcalloc(v_budget,
+ sizeof(struct msix_entry), GFP_KERNEL);
+ if (adapter->msix_entries) {
+ for (vector = 0; vector < v_budget; vector++)
+ adapter->msix_entries[vector].entry = vector;
+
+ ixgbe_acquire_msix_vectors(adapter, v_budget);
+
+ if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
+ goto out;
+ }
+
+ adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
+ adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
+ if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
+ e_err(probe,
+ "ATR is not supported while multiple "
+ "queues are disabled. Disabling Flow Director\n");
+ }
+ adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
+ adapter->atr_sample_rate = 0;
+ if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
+ ixgbe_disable_sriov(adapter);
+
+ err = ixgbe_set_num_queues(adapter);
+ if (err)
+ return err;
+
+ err = pci_enable_msi(adapter->pdev);
+ if (!err) {
+ adapter->flags |= IXGBE_FLAG_MSI_ENABLED;
+ } else {
+ netif_printk(adapter, hw, KERN_DEBUG, adapter->netdev,
+ "Unable to allocate MSI interrupt, "
+ "falling back to legacy. Error: %d\n", err);
+ /* reset err */
+ err = 0;
+ }
+
+out:
+ return err;
+}
+
+/**
+ * ixgbe_alloc_q_vectors - Allocate memory for interrupt vectors
+ * @adapter: board private structure to initialize
+ *
+ * We allocate one q_vector per queue interrupt. If allocation fails we
+ * return -ENOMEM.
+ **/
+static int ixgbe_alloc_q_vectors(struct ixgbe_adapter *adapter)
+{
+ int q_idx, num_q_vectors;
+ struct ixgbe_q_vector *q_vector;
+ int (*poll)(struct napi_struct *, int);
+
+ if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
+ num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
+ poll = &ixgbe_clean_rxtx_many;
+ } else {
+ num_q_vectors = 1;
+ poll = &ixgbe_poll;
+ }
+
+ for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
+ q_vector = kzalloc_node(sizeof(struct ixgbe_q_vector),
+ GFP_KERNEL, adapter->node);
+ if (!q_vector)
+ q_vector = kzalloc(sizeof(struct ixgbe_q_vector),
+ GFP_KERNEL);
+ if (!q_vector)
+ goto err_out;
+ q_vector->adapter = adapter;
+ if (q_vector->tx.count && !q_vector->rx.count)
+ q_vector->eitr = adapter->tx_eitr_param;
+ else
+ q_vector->eitr = adapter->rx_eitr_param;
+ q_vector->v_idx = q_idx;
+ netif_napi_add(adapter->netdev, &q_vector->napi, (*poll), 64);
+ adapter->q_vector[q_idx] = q_vector;
+ }
+
+ return 0;
+
+err_out:
+ while (q_idx) {
+ q_idx--;
+ q_vector = adapter->q_vector[q_idx];
+ netif_napi_del(&q_vector->napi);
+ kfree(q_vector);
+ adapter->q_vector[q_idx] = NULL;
+ }
+ return -ENOMEM;
+}
+
+/**
+ * ixgbe_free_q_vectors - Free memory allocated for interrupt vectors
+ * @adapter: board private structure to initialize
+ *
+ * This function frees the memory allocated to the q_vectors. In addition if
+ * NAPI is enabled it will delete any references to the NAPI struct prior
+ * to freeing the q_vector.
+ **/
+static void ixgbe_free_q_vectors(struct ixgbe_adapter *adapter)
+{
+ int q_idx, num_q_vectors;
+
+ if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
+ num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
+ else
+ num_q_vectors = 1;
+
+ for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
+ struct ixgbe_q_vector *q_vector = adapter->q_vector[q_idx];
+ adapter->q_vector[q_idx] = NULL;
+ netif_napi_del(&q_vector->napi);
+ kfree(q_vector);
+ }
+}
+
+static void ixgbe_reset_interrupt_capability(struct ixgbe_adapter *adapter)
+{
+ if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
+ adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
+ pci_disable_msix(adapter->pdev);
+ kfree(adapter->msix_entries);
+ adapter->msix_entries = NULL;
+ } else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) {
+ adapter->flags &= ~IXGBE_FLAG_MSI_ENABLED;
+ pci_disable_msi(adapter->pdev);
+ }
+}
+
+/**
+ * ixgbe_init_interrupt_scheme - Determine proper interrupt scheme
+ * @adapter: board private structure to initialize
+ *
+ * We determine which interrupt scheme to use based on...
+ * - Kernel support (MSI, MSI-X)
+ * - which can be user-defined (via MODULE_PARAM)
+ * - Hardware queue count (num_*_queues)
+ * - defined by miscellaneous hardware support/features (RSS, etc.)
+ **/
+int ixgbe_init_interrupt_scheme(struct ixgbe_adapter *adapter)
+{
+ int err;
+
+ /* Number of supported queues */
+ err = ixgbe_set_num_queues(adapter);
+ if (err)
+ return err;
+
+ err = ixgbe_set_interrupt_capability(adapter);
+ if (err) {
+ e_dev_err("Unable to setup interrupt capabilities\n");
+ goto err_set_interrupt;
+ }
+
+ err = ixgbe_alloc_q_vectors(adapter);
+ if (err) {
+ e_dev_err("Unable to allocate memory for queue vectors\n");
+ goto err_alloc_q_vectors;
+ }
+
+ err = ixgbe_alloc_queues(adapter);
+ if (err) {
+ e_dev_err("Unable to allocate memory for queues\n");
+ goto err_alloc_queues;
+ }
+
+ e_dev_info("Multiqueue %s: Rx Queue count = %u, Tx Queue count = %u\n",
+ (adapter->num_rx_queues > 1) ? "Enabled" : "Disabled",
+ adapter->num_rx_queues, adapter->num_tx_queues);
+
+ set_bit(__IXGBE_DOWN, &adapter->state);
+
+ return 0;
+
+err_alloc_queues:
+ ixgbe_free_q_vectors(adapter);
+err_alloc_q_vectors:
+ ixgbe_reset_interrupt_capability(adapter);
+err_set_interrupt:
+ return err;
+}
+
+/**
+ * ixgbe_clear_interrupt_scheme - Clear the current interrupt scheme settings
+ * @adapter: board private structure to clear interrupt scheme on
+ *
+ * We go through and clear interrupt specific resources and reset the structure
+ * to pre-load conditions
+ **/
+void ixgbe_clear_interrupt_scheme(struct ixgbe_adapter *adapter)
+{
+ int i;
+
+ for (i = 0; i < adapter->num_tx_queues; i++) {
+ kfree(adapter->tx_ring[i]);
+ adapter->tx_ring[i] = NULL;
+ }
+ for (i = 0; i < adapter->num_rx_queues; i++) {
+ struct ixgbe_ring *ring = adapter->rx_ring[i];
+
+ /* ixgbe_get_stats64() might access this ring, we must wait
+ * a grace period before freeing it.
+ */
+ kfree_rcu(ring, rcu);
+ adapter->rx_ring[i] = NULL;
+ }
+
+ adapter->num_tx_queues = 0;
+ adapter->num_rx_queues = 0;
+
+ ixgbe_free_q_vectors(adapter);
+ ixgbe_reset_interrupt_capability(adapter);
+}
+
+/**
+ * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter)
+ * @adapter: board private structure to initialize
+ *
+ * ixgbe_sw_init initializes the Adapter private data structure.
+ * Fields are initialized based on PCI device information and
+ * OS network device settings (MTU size).
+ **/
+static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ struct pci_dev *pdev = adapter->pdev;
+ struct net_device *dev = adapter->netdev;
+ unsigned int rss;
+#ifdef CONFIG_IXGBE_DCB
+ int j;
+ struct tc_configuration *tc;
+#endif
+ int max_frame = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
+
+ /* PCI config space info */
+
+ hw->vendor_id = pdev->vendor;
+ hw->device_id = pdev->device;
+ hw->revision_id = pdev->revision;
+ hw->subsystem_vendor_id = pdev->subsystem_vendor;
+ hw->subsystem_device_id = pdev->subsystem_device;
+
+ /* Set capability flags */
+ rss = min(IXGBE_MAX_RSS_INDICES, (int)num_online_cpus());
+ adapter->ring_feature[RING_F_RSS].indices = rss;
+ adapter->flags |= IXGBE_FLAG_RSS_ENABLED;
+ switch (hw->mac.type) {
+ case ixgbe_mac_82598EB:
+ if (hw->device_id == IXGBE_DEV_ID_82598AT)
+ adapter->flags |= IXGBE_FLAG_FAN_FAIL_CAPABLE;
+ adapter->max_msix_q_vectors = MAX_MSIX_Q_VECTORS_82598;
+ break;
+ case ixgbe_mac_82599EB:
+ case ixgbe_mac_X540:
+ adapter->max_msix_q_vectors = MAX_MSIX_Q_VECTORS_82599;
+ adapter->flags2 |= IXGBE_FLAG2_RSC_CAPABLE;
+ adapter->flags2 |= IXGBE_FLAG2_RSC_ENABLED;
+ if (hw->device_id == IXGBE_DEV_ID_82599_T3_LOM)
+ adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE;
+ /* Flow Director hash filters enabled */
+ adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
+ adapter->atr_sample_rate = 20;
+ adapter->ring_feature[RING_F_FDIR].indices =
+ IXGBE_MAX_FDIR_INDICES;
+ adapter->fdir_pballoc = IXGBE_FDIR_PBALLOC_64K;
+#ifdef IXGBE_FCOE
+ adapter->flags |= IXGBE_FLAG_FCOE_CAPABLE;
+ adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;
+ adapter->ring_feature[RING_F_FCOE].indices = 0;
+#ifdef CONFIG_IXGBE_DCB
+ /* Default traffic class to use for FCoE */
+ adapter->fcoe.up = IXGBE_FCOE_DEFTC;
+#endif
+#endif /* IXGBE_FCOE */
+ break;
+ default:
+ break;
+ }
+
+ /* n-tuple support exists, always init our spinlock */
+ spin_lock_init(&adapter->fdir_perfect_lock);
+
+#ifdef CONFIG_IXGBE_DCB
+ /* Configure DCB traffic classes */
+ for (j = 0; j < MAX_TRAFFIC_CLASS; j++) {
+ tc = &adapter->dcb_cfg.tc_config[j];
+ tc->path[DCB_TX_CONFIG].bwg_id = 0;
+ tc->path[DCB_TX_CONFIG].bwg_percent = 12 + (j & 1);
+ tc->path[DCB_RX_CONFIG].bwg_id = 0;
+ tc->path[DCB_RX_CONFIG].bwg_percent = 12 + (j & 1);
+ tc->dcb_pfc = pfc_disabled;
+ }
+ adapter->dcb_cfg.bw_percentage[DCB_TX_CONFIG][0] = 100;
+ adapter->dcb_cfg.bw_percentage[DCB_RX_CONFIG][0] = 100;
+ adapter->dcb_cfg.pfc_mode_enable = false;
+ adapter->dcb_set_bitmap = 0x00;
+ adapter->dcbx_cap = DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_CEE;
+ ixgbe_copy_dcb_cfg(&adapter->dcb_cfg, &adapter->temp_dcb_cfg,
+ MAX_TRAFFIC_CLASS);
+
+#endif
+
+ /* default flow control settings */
+ hw->fc.requested_mode = ixgbe_fc_full;
+ hw->fc.current_mode = ixgbe_fc_full; /* init for ethtool output */
+#ifdef CONFIG_DCB
+ adapter->last_lfc_mode = hw->fc.current_mode;
+#endif
+ hw->fc.high_water = FC_HIGH_WATER(max_frame);
+ hw->fc.low_water = FC_LOW_WATER(max_frame);
+ hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE;
+ hw->fc.send_xon = true;
+ hw->fc.disable_fc_autoneg = false;
+
+ /* enable itr by default in dynamic mode */
+ adapter->rx_itr_setting = 1;
+ adapter->rx_eitr_param = 20000;
+ adapter->tx_itr_setting = 1;
+ adapter->tx_eitr_param = 10000;
+
+ /* set defaults for eitr in MegaBytes */
+ adapter->eitr_low = 10;
+ adapter->eitr_high = 20;
+
+ /* set default ring sizes */
+ adapter->tx_ring_count = IXGBE_DEFAULT_TXD;
+ adapter->rx_ring_count = IXGBE_DEFAULT_RXD;
+
+ /* set default work limits */
+ adapter->tx_work_limit = adapter->tx_ring_count;
+
+ /* initialize eeprom parameters */
+ if (ixgbe_init_eeprom_params_generic(hw)) {
+ e_dev_err("EEPROM initialization failed\n");
+ return -EIO;
+ }
+
+ /* enable rx csum by default */
+ adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED;
+
+ /* get assigned NUMA node */
+ adapter->node = dev_to_node(&pdev->dev);
+
+ set_bit(__IXGBE_DOWN, &adapter->state);
+
+ return 0;
+}
+
+/**
+ * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors)
+ * @tx_ring: tx descriptor ring (for a specific queue) to setup
+ *
+ * Return 0 on success, negative on failure
+ **/
+int ixgbe_setup_tx_resources(struct ixgbe_ring *tx_ring)
+{
+ struct device *dev = tx_ring->dev;
+ int size;
+
+ size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count;
+ tx_ring->tx_buffer_info = vzalloc_node(size, tx_ring->numa_node);
+ if (!tx_ring->tx_buffer_info)
+ tx_ring->tx_buffer_info = vzalloc(size);
+ if (!tx_ring->tx_buffer_info)
+ goto err;
+
+ /* round up to nearest 4K */
+ tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc);
+ tx_ring->size = ALIGN(tx_ring->size, 4096);
+
+ tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size,
+ &tx_ring->dma, GFP_KERNEL);
+ if (!tx_ring->desc)
+ goto err;
+
+ tx_ring->next_to_use = 0;
+ tx_ring->next_to_clean = 0;
+ return 0;
+
+err:
+ vfree(tx_ring->tx_buffer_info);
+ tx_ring->tx_buffer_info = NULL;
+ dev_err(dev, "Unable to allocate memory for the Tx descriptor ring\n");
+ return -ENOMEM;
+}
+
+/**
+ * ixgbe_setup_all_tx_resources - allocate all queues Tx resources
+ * @adapter: board private structure
+ *
+ * If this function returns with an error, then it's possible one or
+ * more of the rings is populated (while the rest are not). It is the
+ * callers duty to clean those orphaned rings.
+ *
+ * Return 0 on success, negative on failure
+ **/
+static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter *adapter)
+{
+ int i, err = 0;
+
+ for (i = 0; i < adapter->num_tx_queues; i++) {
+ err = ixgbe_setup_tx_resources(adapter->tx_ring[i]);
+ if (!err)
+ continue;
+ e_err(probe, "Allocation for Tx Queue %u failed\n", i);
+ break;
+ }
+
+ return err;
+}
+
+/**
+ * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors)
+ * @rx_ring: rx descriptor ring (for a specific queue) to setup
+ *
+ * Returns 0 on success, negative on failure
+ **/
+int ixgbe_setup_rx_resources(struct ixgbe_ring *rx_ring)
+{
+ struct device *dev = rx_ring->dev;
+ int size;
+
+ size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count;
+ rx_ring->rx_buffer_info = vzalloc_node(size, rx_ring->numa_node);
+ if (!rx_ring->rx_buffer_info)
+ rx_ring->rx_buffer_info = vzalloc(size);
+ if (!rx_ring->rx_buffer_info)
+ goto err;
+
+ /* Round up to nearest 4K */
+ rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc);
+ rx_ring->size = ALIGN(rx_ring->size, 4096);
+
+ rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size,
+ &rx_ring->dma, GFP_KERNEL);
+
+ if (!rx_ring->desc)
+ goto err;
+
+ rx_ring->next_to_clean = 0;
+ rx_ring->next_to_use = 0;
+
+ return 0;
+err:
+ vfree(rx_ring->rx_buffer_info);
+ rx_ring->rx_buffer_info = NULL;
+ dev_err(dev, "Unable to allocate memory for the Rx descriptor ring\n");
+ return -ENOMEM;
+}
+
+/**
+ * ixgbe_setup_all_rx_resources - allocate all queues Rx resources
+ * @adapter: board private structure
+ *
+ * If this function returns with an error, then it's possible one or
+ * more of the rings is populated (while the rest are not). It is the
+ * callers duty to clean those orphaned rings.
+ *
+ * Return 0 on success, negative on failure
+ **/
+static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter *adapter)
+{
+ int i, err = 0;
+
+ for (i = 0; i < adapter->num_rx_queues; i++) {
+ err = ixgbe_setup_rx_resources(adapter->rx_ring[i]);
+ if (!err)
+ continue;
+ e_err(probe, "Allocation for Rx Queue %u failed\n", i);
+ break;
+ }
+
+ return err;
+}
+
+/**
+ * ixgbe_free_tx_resources - Free Tx Resources per Queue
+ * @tx_ring: Tx descriptor ring for a specific queue
+ *
+ * Free all transmit software resources
+ **/
+void ixgbe_free_tx_resources(struct ixgbe_ring *tx_ring)
+{
+ ixgbe_clean_tx_ring(tx_ring);
+
+ vfree(tx_ring->tx_buffer_info);
+ tx_ring->tx_buffer_info = NULL;
+
+ /* if not set, then don't free */
+ if (!tx_ring->desc)
+ return;
+
+ dma_free_coherent(tx_ring->dev, tx_ring->size,
+ tx_ring->desc, tx_ring->dma);
+
+ tx_ring->desc = NULL;
+}
+
+/**
+ * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues
+ * @adapter: board private structure
+ *
+ * Free all transmit software resources
+ **/
+static void ixgbe_free_all_tx_resources(struct ixgbe_adapter *adapter)
+{
+ int i;
+
+ for (i = 0; i < adapter->num_tx_queues; i++)
+ if (adapter->tx_ring[i]->desc)
+ ixgbe_free_tx_resources(adapter->tx_ring[i]);
+}
+
+/**
+ * ixgbe_free_rx_resources - Free Rx Resources
+ * @rx_ring: ring to clean the resources from
+ *
+ * Free all receive software resources
+ **/
+void ixgbe_free_rx_resources(struct ixgbe_ring *rx_ring)
+{
+ ixgbe_clean_rx_ring(rx_ring);
+
+ vfree(rx_ring->rx_buffer_info);
+ rx_ring->rx_buffer_info = NULL;
+
+ /* if not set, then don't free */
+ if (!rx_ring->desc)
+ return;
+
+ dma_free_coherent(rx_ring->dev, rx_ring->size,
+ rx_ring->desc, rx_ring->dma);
+
+ rx_ring->desc = NULL;
+}
+
+/**
+ * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues
+ * @adapter: board private structure
+ *
+ * Free all receive software resources
+ **/
+static void ixgbe_free_all_rx_resources(struct ixgbe_adapter *adapter)
+{
+ int i;
+
+ for (i = 0; i < adapter->num_rx_queues; i++)
+ if (adapter->rx_ring[i]->desc)
+ ixgbe_free_rx_resources(adapter->rx_ring[i]);
+}
+
+/**
+ * ixgbe_change_mtu - Change the Maximum Transfer Unit
+ * @netdev: network interface device structure
+ * @new_mtu: new value for maximum frame size
+ *
+ * Returns 0 on success, negative on failure
+ **/
+static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+ struct ixgbe_hw *hw = &adapter->hw;
+ int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
+
+ /* MTU < 68 is an error and causes problems on some kernels */
+ if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED &&
+ hw->mac.type != ixgbe_mac_X540) {
+ if ((new_mtu < 68) || (max_frame > MAXIMUM_ETHERNET_VLAN_SIZE))
+ return -EINVAL;
+ } else {
+ if ((new_mtu < 68) || (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE))
+ return -EINVAL;
+ }
+
+ e_info(probe, "changing MTU from %d to %d\n", netdev->mtu, new_mtu);
+ /* must set new MTU before calling down or up */
+ netdev->mtu = new_mtu;
+
+ hw->fc.high_water = FC_HIGH_WATER(max_frame);
+ hw->fc.low_water = FC_LOW_WATER(max_frame);
+
+ if (netif_running(netdev))
+ ixgbe_reinit_locked(adapter);
+
+ return 0;
+}
+
+/**
+ * ixgbe_open - Called when a network interface is made active
+ * @netdev: network interface device structure
+ *
+ * Returns 0 on success, negative value on failure
+ *
+ * The open entry point is called when a network interface is made
+ * active by the system (IFF_UP). At this point all resources needed
+ * for transmit and receive operations are allocated, the interrupt
+ * handler is registered with the OS, the watchdog timer is started,
+ * and the stack is notified that the interface is ready.
+ **/
+static int ixgbe_open(struct net_device *netdev)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+ int err;
+
+ /* disallow open during test */
+ if (test_bit(__IXGBE_TESTING, &adapter->state))
+ return -EBUSY;
+
+ netif_carrier_off(netdev);
+
+ /* allocate transmit descriptors */
+ err = ixgbe_setup_all_tx_resources(adapter);
+ if (err)
+ goto err_setup_tx;
+
+ /* allocate receive descriptors */
+ err = ixgbe_setup_all_rx_resources(adapter);
+ if (err)
+ goto err_setup_rx;
+
+ ixgbe_configure(adapter);
+
+ err = ixgbe_request_irq(adapter);
+ if (err)
+ goto err_req_irq;
+
+ err = ixgbe_up_complete(adapter);
+ if (err)
+ goto err_up;
+
+ netif_tx_start_all_queues(netdev);
+
+ return 0;
+
+err_up:
+ ixgbe_release_hw_control(adapter);
+ ixgbe_free_irq(adapter);
+err_req_irq:
+err_setup_rx:
+ ixgbe_free_all_rx_resources(adapter);
+err_setup_tx:
+ ixgbe_free_all_tx_resources(adapter);
+ ixgbe_reset(adapter);
+
+ return err;
+}
+
+/**
+ * ixgbe_close - Disables a network interface
+ * @netdev: network interface device structure
+ *
+ * Returns 0, this is not allowed to fail
+ *
+ * The close entry point is called when an interface is de-activated
+ * by the OS. The hardware is still under the drivers control, but
+ * needs to be disabled. A global MAC reset is issued to stop the
+ * hardware, and all transmit and receive resources are freed.
+ **/
+static int ixgbe_close(struct net_device *netdev)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+
+ ixgbe_down(adapter);
+ ixgbe_free_irq(adapter);
+
+ ixgbe_fdir_filter_exit(adapter);
+
+ ixgbe_free_all_tx_resources(adapter);
+ ixgbe_free_all_rx_resources(adapter);
+
+ ixgbe_release_hw_control(adapter);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int ixgbe_resume(struct pci_dev *pdev)
+{
+ struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
+ struct net_device *netdev = adapter->netdev;
+ u32 err;
+
+ pci_set_power_state(pdev, PCI_D0);
+ pci_restore_state(pdev);
+ /*
+ * pci_restore_state clears dev->state_saved so call
+ * pci_save_state to restore it.
+ */
+ pci_save_state(pdev);
+
+ err = pci_enable_device_mem(pdev);
+ if (err) {
+ e_dev_err("Cannot enable PCI device from suspend\n");
+ return err;
+ }
+ pci_set_master(pdev);
+
+ pci_wake_from_d3(pdev, false);
+
+ err = ixgbe_init_interrupt_scheme(adapter);
+ if (err) {
+ e_dev_err("Cannot initialize interrupts for device\n");
+ return err;
+ }
+
+ ixgbe_reset(adapter);
+
+ IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
+
+ if (netif_running(netdev)) {
+ err = ixgbe_open(netdev);
+ if (err)
+ return err;
+ }
+
+ netif_device_attach(netdev);
+
+ return 0;
+}
+#endif /* CONFIG_PM */
+
+static int __ixgbe_shutdown(struct pci_dev *pdev, bool *enable_wake)
+{
+ struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
+ struct net_device *netdev = adapter->netdev;
+ struct ixgbe_hw *hw = &adapter->hw;
+ u32 ctrl, fctrl;
+ u32 wufc = adapter->wol;
+#ifdef CONFIG_PM
+ int retval = 0;
+#endif
+
+ netif_device_detach(netdev);
+
+ if (netif_running(netdev)) {
+ ixgbe_down(adapter);
+ ixgbe_free_irq(adapter);
+ ixgbe_free_all_tx_resources(adapter);
+ ixgbe_free_all_rx_resources(adapter);
+ }
+
+ ixgbe_clear_interrupt_scheme(adapter);
+#ifdef CONFIG_DCB
+ kfree(adapter->ixgbe_ieee_pfc);
+ kfree(adapter->ixgbe_ieee_ets);
+#endif
+
+#ifdef CONFIG_PM
+ retval = pci_save_state(pdev);
+ if (retval)
+ return retval;
+
+#endif
+ if (wufc) {
+ ixgbe_set_rx_mode(netdev);
+
+ /* turn on all-multi mode if wake on multicast is enabled */
+ if (wufc & IXGBE_WUFC_MC) {
+ fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
+ fctrl |= IXGBE_FCTRL_MPE;
+ IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
+ }
+
+ ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
+ ctrl |= IXGBE_CTRL_GIO_DIS;
+ IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl);
+
+ IXGBE_WRITE_REG(hw, IXGBE_WUFC, wufc);
+ } else {
+ IXGBE_WRITE_REG(hw, IXGBE_WUC, 0);
+ IXGBE_WRITE_REG(hw, IXGBE_WUFC, 0);
+ }
+
+ switch (hw->mac.type) {
+ case ixgbe_mac_82598EB:
+ pci_wake_from_d3(pdev, false);
+ break;
+ case ixgbe_mac_82599EB:
+ case ixgbe_mac_X540:
+ pci_wake_from_d3(pdev, !!wufc);
+ break;
+ default:
+ break;
+ }
+
+ *enable_wake = !!wufc;
+
+ ixgbe_release_hw_control(adapter);
+
+ pci_disable_device(pdev);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int ixgbe_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+ int retval;
+ bool wake;
+
+ retval = __ixgbe_shutdown(pdev, &wake);
+ if (retval)
+ return retval;
+
+ if (wake) {
+ pci_prepare_to_sleep(pdev);
+ } else {
+ pci_wake_from_d3(pdev, false);
+ pci_set_power_state(pdev, PCI_D3hot);
+ }
+
+ return 0;
+}
+#endif /* CONFIG_PM */
+
+static void ixgbe_shutdown(struct pci_dev *pdev)
+{
+ bool wake;
+
+ __ixgbe_shutdown(pdev, &wake);
+
+ if (system_state == SYSTEM_POWER_OFF) {
+ pci_wake_from_d3(pdev, wake);
+ pci_set_power_state(pdev, PCI_D3hot);
+ }
+}
+
+/**
+ * ixgbe_update_stats - Update the board statistics counters.
+ * @adapter: board private structure
+ **/
+void ixgbe_update_stats(struct ixgbe_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ struct ixgbe_hw *hw = &adapter->hw;
+ struct ixgbe_hw_stats *hwstats = &adapter->stats;
+ u64 total_mpc = 0;
+ u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot;
+ u64 non_eop_descs = 0, restart_queue = 0, tx_busy = 0;
+ u64 alloc_rx_page_failed = 0, alloc_rx_buff_failed = 0;
+ u64 bytes = 0, packets = 0;
+
+ if (test_bit(__IXGBE_DOWN, &adapter->state) ||
+ test_bit(__IXGBE_RESETTING, &adapter->state))
+ return;
+
+ if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) {
+ u64 rsc_count = 0;
+ u64 rsc_flush = 0;
+ for (i = 0; i < 16; i++)
+ adapter->hw_rx_no_dma_resources +=
+ IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
+ for (i = 0; i < adapter->num_rx_queues; i++) {
+ rsc_count += adapter->rx_ring[i]->rx_stats.rsc_count;
+ rsc_flush += adapter->rx_ring[i]->rx_stats.rsc_flush;
+ }
+ adapter->rsc_total_count = rsc_count;
+ adapter->rsc_total_flush = rsc_flush;
+ }
+
+ for (i = 0; i < adapter->num_rx_queues; i++) {
+ struct ixgbe_ring *rx_ring = adapter->rx_ring[i];
+ non_eop_descs += rx_ring->rx_stats.non_eop_descs;
+ alloc_rx_page_failed += rx_ring->rx_stats.alloc_rx_page_failed;
+ alloc_rx_buff_failed += rx_ring->rx_stats.alloc_rx_buff_failed;
+ bytes += rx_ring->stats.bytes;
+ packets += rx_ring->stats.packets;
+ }
+ adapter->non_eop_descs = non_eop_descs;
+ adapter->alloc_rx_page_failed = alloc_rx_page_failed;
+ adapter->alloc_rx_buff_failed = alloc_rx_buff_failed;
+ netdev->stats.rx_bytes = bytes;
+ netdev->stats.rx_packets = packets;
+
+ bytes = 0;
+ packets = 0;
+ /* gather some stats to the adapter struct that are per queue */
+ for (i = 0; i < adapter->num_tx_queues; i++) {
+ struct ixgbe_ring *tx_ring = adapter->tx_ring[i];
+ restart_queue += tx_ring->tx_stats.restart_queue;
+ tx_busy += tx_ring->tx_stats.tx_busy;
+ bytes += tx_ring->stats.bytes;
+ packets += tx_ring->stats.packets;
+ }
+ adapter->restart_queue = restart_queue;
+ adapter->tx_busy = tx_busy;
+ netdev->stats.tx_bytes = bytes;
+ netdev->stats.tx_packets = packets;
+
+ hwstats->crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS);
+ for (i = 0; i < 8; i++) {
+ /* for packet buffers not used, the register should read 0 */
+ mpc = IXGBE_READ_REG(hw, IXGBE_MPC(i));
+ missed_rx += mpc;
+ hwstats->mpc[i] += mpc;
+ total_mpc += hwstats->mpc[i];
+ if (hw->mac.type == ixgbe_mac_82598EB)
+ hwstats->rnbc[i] += IXGBE_READ_REG(hw, IXGBE_RNBC(i));
+ hwstats->qptc[i] += IXGBE_READ_REG(hw, IXGBE_QPTC(i));
+ hwstats->qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC(i));
+ hwstats->qprc[i] += IXGBE_READ_REG(hw, IXGBE_QPRC(i));
+ hwstats->qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC(i));
+ switch (hw->mac.type) {
+ case ixgbe_mac_82598EB:
+ hwstats->pxonrxc[i] +=
+ IXGBE_READ_REG(hw, IXGBE_PXONRXC(i));
+ break;
+ case ixgbe_mac_82599EB:
+ case ixgbe_mac_X540:
+ hwstats->pxonrxc[i] +=
+ IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i));
+ break;
+ default:
+ break;
+ }
+ hwstats->pxontxc[i] += IXGBE_READ_REG(hw, IXGBE_PXONTXC(i));
+ hwstats->pxofftxc[i] += IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i));
+ }
+ hwstats->gprc += IXGBE_READ_REG(hw, IXGBE_GPRC);
+ /* work around hardware counting issue */
+ hwstats->gprc -= missed_rx;
+
+ ixgbe_update_xoff_received(adapter);
+
+ /* 82598 hardware only has a 32 bit counter in the high register */
+ switch (hw->mac.type) {
+ case ixgbe_mac_82598EB:
+ hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXC);
+ hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCH);
+ hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCH);
+ hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORH);
+ break;
+ case ixgbe_mac_X540:
+ /* OS2BMC stats are X540 only*/
+ hwstats->o2bgptc += IXGBE_READ_REG(hw, IXGBE_O2BGPTC);
+ hwstats->o2bspc += IXGBE_READ_REG(hw, IXGBE_O2BSPC);
+ hwstats->b2ospc += IXGBE_READ_REG(hw, IXGBE_B2OSPC);
+ hwstats->b2ogprc += IXGBE_READ_REG(hw, IXGBE_B2OGPRC);
+ case ixgbe_mac_82599EB:
+ hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCL);
+ IXGBE_READ_REG(hw, IXGBE_GORCH); /* to clear */
+ hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCL);
+ IXGBE_READ_REG(hw, IXGBE_GOTCH); /* to clear */
+ hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORL);
+ IXGBE_READ_REG(hw, IXGBE_TORH); /* to clear */
+ hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXCNT);
+ hwstats->fdirmatch += IXGBE_READ_REG(hw, IXGBE_FDIRMATCH);
+ hwstats->fdirmiss += IXGBE_READ_REG(hw, IXGBE_FDIRMISS);
+#ifdef IXGBE_FCOE
+ hwstats->fccrc += IXGBE_READ_REG(hw, IXGBE_FCCRC);
+ hwstats->fcoerpdc += IXGBE_READ_REG(hw, IXGBE_FCOERPDC);
+ hwstats->fcoeprc += IXGBE_READ_REG(hw, IXGBE_FCOEPRC);
+ hwstats->fcoeptc += IXGBE_READ_REG(hw, IXGBE_FCOEPTC);
+ hwstats->fcoedwrc += IXGBE_READ_REG(hw, IXGBE_FCOEDWRC);
+ hwstats->fcoedwtc += IXGBE_READ_REG(hw, IXGBE_FCOEDWTC);
+#endif /* IXGBE_FCOE */
+ break;
+ default:
+ break;
+ }
+ bprc = IXGBE_READ_REG(hw, IXGBE_BPRC);
+ hwstats->bprc += bprc;
+ hwstats->mprc += IXGBE_READ_REG(hw, IXGBE_MPRC);
+ if (hw->mac.type == ixgbe_mac_82598EB)
+ hwstats->mprc -= bprc;
+ hwstats->roc += IXGBE_READ_REG(hw, IXGBE_ROC);
+ hwstats->prc64 += IXGBE_READ_REG(hw, IXGBE_PRC64);
+ hwstats->prc127 += IXGBE_READ_REG(hw, IXGBE_PRC127);
+ hwstats->prc255 += IXGBE_READ_REG(hw, IXGBE_PRC255);
+ hwstats->prc511 += IXGBE_READ_REG(hw, IXGBE_PRC511);
+ hwstats->prc1023 += IXGBE_READ_REG(hw, IXGBE_PRC1023);
+ hwstats->prc1522 += IXGBE_READ_REG(hw, IXGBE_PRC1522);
+ hwstats->rlec += IXGBE_READ_REG(hw, IXGBE_RLEC);
+ lxon = IXGBE_READ_REG(hw, IXGBE_LXONTXC);
+ hwstats->lxontxc += lxon;
+ lxoff = IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
+ hwstats->lxofftxc += lxoff;
+ hwstats->ruc += IXGBE_READ_REG(hw, IXGBE_RUC);
+ hwstats->gptc += IXGBE_READ_REG(hw, IXGBE_GPTC);
+ hwstats->mptc += IXGBE_READ_REG(hw, IXGBE_MPTC);
+ /*
+ * 82598 errata - tx of flow control packets is included in tx counters
+ */
+ xon_off_tot = lxon + lxoff;
+ hwstats->gptc -= xon_off_tot;
+ hwstats->mptc -= xon_off_tot;
+ hwstats->gotc -= (xon_off_tot * (ETH_ZLEN + ETH_FCS_LEN));
+ hwstats->ruc += IXGBE_READ_REG(hw, IXGBE_RUC);
+ hwstats->rfc += IXGBE_READ_REG(hw, IXGBE_RFC);
+ hwstats->rjc += IXGBE_READ_REG(hw, IXGBE_RJC);
+ hwstats->tpr += IXGBE_READ_REG(hw, IXGBE_TPR);
+ hwstats->ptc64 += IXGBE_READ_REG(hw, IXGBE_PTC64);
+ hwstats->ptc64 -= xon_off_tot;
+ hwstats->ptc127 += IXGBE_READ_REG(hw, IXGBE_PTC127);
+ hwstats->ptc255 += IXGBE_READ_REG(hw, IXGBE_PTC255);
+ hwstats->ptc511 += IXGBE_READ_REG(hw, IXGBE_PTC511);
+ hwstats->ptc1023 += IXGBE_READ_REG(hw, IXGBE_PTC1023);
+ hwstats->ptc1522 += IXGBE_READ_REG(hw, IXGBE_PTC1522);
+ hwstats->bptc += IXGBE_READ_REG(hw, IXGBE_BPTC);
+
+ /* Fill out the OS statistics structure */
+ netdev->stats.multicast = hwstats->mprc;
+
+ /* Rx Errors */
+ netdev->stats.rx_errors = hwstats->crcerrs + hwstats->rlec;
+ netdev->stats.rx_dropped = 0;
+ netdev->stats.rx_length_errors = hwstats->rlec;
+ netdev->stats.rx_crc_errors = hwstats->crcerrs;
+ netdev->stats.rx_missed_errors = total_mpc;
+}
+
+/**
+ * ixgbe_fdir_reinit_subtask - worker thread to reinit FDIR filter table
+ * @adapter - pointer to the device adapter structure
+ **/
+static void ixgbe_fdir_reinit_subtask(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ int i;
+
+ if (!(adapter->flags2 & IXGBE_FLAG2_FDIR_REQUIRES_REINIT))
+ return;
+
+ adapter->flags2 &= ~IXGBE_FLAG2_FDIR_REQUIRES_REINIT;
+
+ /* if interface is down do nothing */
+ if (test_bit(__IXGBE_DOWN, &adapter->state))
+ return;
+
+ /* do nothing if we are not using signature filters */
+ if (!(adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE))
+ return;
+
+ adapter->fdir_overflow++;
+
+ if (ixgbe_reinit_fdir_tables_82599(hw) == 0) {
+ for (i = 0; i < adapter->num_tx_queues; i++)
+ set_bit(__IXGBE_TX_FDIR_INIT_DONE,
+ &(adapter->tx_ring[i]->state));
+ /* re-enable flow director interrupts */
+ IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_FLOW_DIR);
+ } else {
+ e_err(probe, "failed to finish FDIR re-initialization, "
+ "ignored adding FDIR ATR filters\n");
+ }
+}
+
+/**
+ * ixgbe_check_hang_subtask - check for hung queues and dropped interrupts
+ * @adapter - pointer to the device adapter structure
+ *
+ * This function serves two purposes. First it strobes the interrupt lines
+ * in order to make certain interrupts are occuring. Secondly it sets the
+ * bits needed to check for TX hangs. As a result we should immediately
+ * determine if a hang has occured.
+ */
+static void ixgbe_check_hang_subtask(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ u64 eics = 0;
+ int i;
+
+ /* If we're down or resetting, just bail */
+ if (test_bit(__IXGBE_DOWN, &adapter->state) ||
+ test_bit(__IXGBE_RESETTING, &adapter->state))
+ return;
+
+ /* Force detection of hung controller */
+ if (netif_carrier_ok(adapter->netdev)) {
+ for (i = 0; i < adapter->num_tx_queues; i++)
+ set_check_for_tx_hang(adapter->tx_ring[i]);
+ }
+
+ if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) {
+ /*
+ * for legacy and MSI interrupts don't set any bits
+ * that are enabled for EIAM, because this operation
+ * would set *both* EIMS and EICS for any bit in EIAM
+ */
+ IXGBE_WRITE_REG(hw, IXGBE_EICS,
+ (IXGBE_EICS_TCP_TIMER | IXGBE_EICS_OTHER));
+ } else {
+ /* get one bit for every active tx/rx interrupt vector */
+ for (i = 0; i < adapter->num_msix_vectors - NON_Q_VECTORS; i++) {
+ struct ixgbe_q_vector *qv = adapter->q_vector[i];
+ if (qv->rx.count || qv->tx.count)
+ eics |= ((u64)1 << i);
+ }
+ }
+
+ /* Cause software interrupt to ensure rings are cleaned */
+ ixgbe_irq_rearm_queues(adapter, eics);
+
+}
+
+/**
+ * ixgbe_watchdog_update_link - update the link status
+ * @adapter - pointer to the device adapter structure
+ * @link_speed - pointer to a u32 to store the link_speed
+ **/
+static void ixgbe_watchdog_update_link(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ u32 link_speed = adapter->link_speed;
+ bool link_up = adapter->link_up;
+ int i;
+
+ if (!(adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE))
+ return;
+
+ if (hw->mac.ops.check_link) {
+ hw->mac.ops.check_link(hw, &link_speed, &link_up, false);
+ } else {
+ /* always assume link is up, if no check link function */
+ link_speed = IXGBE_LINK_SPEED_10GB_FULL;
+ link_up = true;
+ }
+ if (link_up) {
+ if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
+ for (i = 0; i < MAX_TRAFFIC_CLASS; i++)
+ hw->mac.ops.fc_enable(hw, i);
+ } else {
+ hw->mac.ops.fc_enable(hw, 0);
+ }
+ }
+
+ if (link_up ||
+ time_after(jiffies, (adapter->link_check_timeout +
+ IXGBE_TRY_LINK_TIMEOUT))) {
+ adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE;
+ IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMC_LSC);
+ IXGBE_WRITE_FLUSH(hw);
+ }
+
+ adapter->link_up = link_up;
+ adapter->link_speed = link_speed;
+}
+
+/**
+ * ixgbe_watchdog_link_is_up - update netif_carrier status and
+ * print link up message
+ * @adapter - pointer to the device adapter structure
+ **/
+static void ixgbe_watchdog_link_is_up(struct ixgbe_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ struct ixgbe_hw *hw = &adapter->hw;
+ u32 link_speed = adapter->link_speed;
+ bool flow_rx, flow_tx;
+
+ /* only continue if link was previously down */
+ if (netif_carrier_ok(netdev))
+ return;
+
+ adapter->flags2 &= ~IXGBE_FLAG2_SEARCH_FOR_SFP;
+
+ switch (hw->mac.type) {
+ case ixgbe_mac_82598EB: {
+ u32 frctl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
+ u32 rmcs = IXGBE_READ_REG(hw, IXGBE_RMCS);
+ flow_rx = !!(frctl & IXGBE_FCTRL_RFCE);
+ flow_tx = !!(rmcs & IXGBE_RMCS_TFCE_802_3X);
+ }
+ break;
+ case ixgbe_mac_X540:
+ case ixgbe_mac_82599EB: {
+ u32 mflcn = IXGBE_READ_REG(hw, IXGBE_MFLCN);
+ u32 fccfg = IXGBE_READ_REG(hw, IXGBE_FCCFG);
+ flow_rx = !!(mflcn & IXGBE_MFLCN_RFCE);
+ flow_tx = !!(fccfg & IXGBE_FCCFG_TFCE_802_3X);
+ }
+ break;
+ default:
+ flow_tx = false;
+ flow_rx = false;
+ break;
+ }
+ e_info(drv, "NIC Link is Up %s, Flow Control: %s\n",
+ (link_speed == IXGBE_LINK_SPEED_10GB_FULL ?
+ "10 Gbps" :
+ (link_speed == IXGBE_LINK_SPEED_1GB_FULL ?
+ "1 Gbps" :
+ (link_speed == IXGBE_LINK_SPEED_100_FULL ?
+ "100 Mbps" :
+ "unknown speed"))),
+ ((flow_rx && flow_tx) ? "RX/TX" :
+ (flow_rx ? "RX" :
+ (flow_tx ? "TX" : "None"))));
+
+ netif_carrier_on(netdev);
+ ixgbe_check_vf_rate_limit(adapter);
+}
+
+/**
+ * ixgbe_watchdog_link_is_down - update netif_carrier status and
+ * print link down message
+ * @adapter - pointer to the adapter structure
+ **/
+static void ixgbe_watchdog_link_is_down(struct ixgbe_adapter* adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ struct ixgbe_hw *hw = &adapter->hw;
+
+ adapter->link_up = false;
+ adapter->link_speed = 0;
+
+ /* only continue if link was up previously */
+ if (!netif_carrier_ok(netdev))
+ return;
+
+ /* poll for SFP+ cable when link is down */
+ if (ixgbe_is_sfp(hw) && hw->mac.type == ixgbe_mac_82598EB)
+ adapter->flags2 |= IXGBE_FLAG2_SEARCH_FOR_SFP;
+
+ e_info(drv, "NIC Link is Down\n");
+ netif_carrier_off(netdev);
+}
+
+/**
+ * ixgbe_watchdog_flush_tx - flush queues on link down
+ * @adapter - pointer to the device adapter structure
+ **/
+static void ixgbe_watchdog_flush_tx(struct ixgbe_adapter *adapter)
+{
+ int i;
+ int some_tx_pending = 0;
+
+ if (!netif_carrier_ok(adapter->netdev)) {
+ for (i = 0; i < adapter->num_tx_queues; i++) {
+ struct ixgbe_ring *tx_ring = adapter->tx_ring[i];
+ if (tx_ring->next_to_use != tx_ring->next_to_clean) {
+ some_tx_pending = 1;
+ break;
+ }
+ }
+
+ if (some_tx_pending) {
+ /* We've lost link, so the controller stops DMA,
+ * but we've got queued Tx work that's never going
+ * to get done, so reset controller to flush Tx.
+ * (Do the reset outside of interrupt context).
+ */
+ adapter->flags2 |= IXGBE_FLAG2_RESET_REQUESTED;
+ }
+ }
+}
+
+static void ixgbe_spoof_check(struct ixgbe_adapter *adapter)
+{
+ u32 ssvpc;
+
+ /* Do not perform spoof check for 82598 */
+ if (adapter->hw.mac.type == ixgbe_mac_82598EB)
+ return;
+
+ ssvpc = IXGBE_READ_REG(&adapter->hw, IXGBE_SSVPC);
+
+ /*
+ * ssvpc register is cleared on read, if zero then no
+ * spoofed packets in the last interval.
+ */
+ if (!ssvpc)
+ return;
+
+ e_warn(drv, "%d Spoofed packets detected\n", ssvpc);
+}
+
+/**
+ * ixgbe_watchdog_subtask - check and bring link up
+ * @adapter - pointer to the device adapter structure
+ **/
+static void ixgbe_watchdog_subtask(struct ixgbe_adapter *adapter)
+{
+ /* if interface is down do nothing */
+ if (test_bit(__IXGBE_DOWN, &adapter->state))
+ return;
+
+ ixgbe_watchdog_update_link(adapter);
+
+ if (adapter->link_up)
+ ixgbe_watchdog_link_is_up(adapter);
+ else
+ ixgbe_watchdog_link_is_down(adapter);
+
+ ixgbe_spoof_check(adapter);
+ ixgbe_update_stats(adapter);
+
+ ixgbe_watchdog_flush_tx(adapter);
+}
+
+/**
+ * ixgbe_sfp_detection_subtask - poll for SFP+ cable
+ * @adapter - the ixgbe adapter structure
+ **/
+static void ixgbe_sfp_detection_subtask(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ s32 err;
+
+ /* not searching for SFP so there is nothing to do here */
+ if (!(adapter->flags2 & IXGBE_FLAG2_SEARCH_FOR_SFP) &&
+ !(adapter->flags2 & IXGBE_FLAG2_SFP_NEEDS_RESET))
+ return;
+
+ /* someone else is in init, wait until next service event */
+ if (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state))
+ return;
+
+ err = hw->phy.ops.identify_sfp(hw);
+ if (err == IXGBE_ERR_SFP_NOT_SUPPORTED)
+ goto sfp_out;
+
+ if (err == IXGBE_ERR_SFP_NOT_PRESENT) {
+ /* If no cable is present, then we need to reset
+ * the next time we find a good cable. */
+ adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET;
+ }
+
+ /* exit on error */
+ if (err)
+ goto sfp_out;
+
+ /* exit if reset not needed */
+ if (!(adapter->flags2 & IXGBE_FLAG2_SFP_NEEDS_RESET))
+ goto sfp_out;
+
+ adapter->flags2 &= ~IXGBE_FLAG2_SFP_NEEDS_RESET;
+
+ /*
+ * A module may be identified correctly, but the EEPROM may not have
+ * support for that module. setup_sfp() will fail in that case, so
+ * we should not allow that module to load.
+ */
+ if (hw->mac.type == ixgbe_mac_82598EB)
+ err = hw->phy.ops.reset(hw);
+ else
+ err = hw->mac.ops.setup_sfp(hw);
+
+ if (err == IXGBE_ERR_SFP_NOT_SUPPORTED)
+ goto sfp_out;
+
+ adapter->flags |= IXGBE_FLAG_NEED_LINK_CONFIG;
+ e_info(probe, "detected SFP+: %d\n", hw->phy.sfp_type);
+
+sfp_out:
+ clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state);
+
+ if ((err == IXGBE_ERR_SFP_NOT_SUPPORTED) &&
+ (adapter->netdev->reg_state == NETREG_REGISTERED)) {
+ e_dev_err("failed to initialize because an unsupported "
+ "SFP+ module type was detected.\n");
+ e_dev_err("Reload the driver after installing a "
+ "supported module.\n");
+ unregister_netdev(adapter->netdev);
+ }
+}
+
+/**
+ * ixgbe_sfp_link_config_subtask - set up link SFP after module install
+ * @adapter - the ixgbe adapter structure
+ **/
+static void ixgbe_sfp_link_config_subtask(struct ixgbe_adapter *adapter)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ u32 autoneg;
+ bool negotiation;
+
+ if (!(adapter->flags & IXGBE_FLAG_NEED_LINK_CONFIG))
+ return;
+
+ /* someone else is in init, wait until next service event */
+ if (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state))
+ return;
+
+ adapter->flags &= ~IXGBE_FLAG_NEED_LINK_CONFIG;
+
+ autoneg = hw->phy.autoneg_advertised;
+ if ((!autoneg) && (hw->mac.ops.get_link_capabilities))
+ hw->mac.ops.get_link_capabilities(hw, &autoneg, &negotiation);
+ hw->mac.autotry_restart = false;
+ if (hw->mac.ops.setup_link)
+ hw->mac.ops.setup_link(hw, autoneg, negotiation, true);
+
+ adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
+ adapter->link_check_timeout = jiffies;
+ clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state);
+}
+
+/**
+ * ixgbe_service_timer - Timer Call-back
+ * @data: pointer to adapter cast into an unsigned long
+ **/
+static void ixgbe_service_timer(unsigned long data)
+{
+ struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data;
+ unsigned long next_event_offset;
+
+ /* poll faster when waiting for link */
+ if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE)
+ next_event_offset = HZ / 10;
+ else
+ next_event_offset = HZ * 2;
+
+ /* Reset the timer */
+ mod_timer(&adapter->service_timer, next_event_offset + jiffies);
+
+ ixgbe_service_event_schedule(adapter);
+}
+
+static void ixgbe_reset_subtask(struct ixgbe_adapter *adapter)
+{
+ if (!(adapter->flags2 & IXGBE_FLAG2_RESET_REQUESTED))
+ return;
+
+ adapter->flags2 &= ~IXGBE_FLAG2_RESET_REQUESTED;
+
+ /* If we're already down or resetting, just bail */
+ if (test_bit(__IXGBE_DOWN, &adapter->state) ||
+ test_bit(__IXGBE_RESETTING, &adapter->state))
+ return;
+
+ ixgbe_dump(adapter);
+ netdev_err(adapter->netdev, "Reset adapter\n");
+ adapter->tx_timeout_count++;
+
+ ixgbe_reinit_locked(adapter);
+}
+
+/**
+ * ixgbe_service_task - manages and runs subtasks
+ * @work: pointer to work_struct containing our data
+ **/
+static void ixgbe_service_task(struct work_struct *work)
+{
+ struct ixgbe_adapter *adapter = container_of(work,
+ struct ixgbe_adapter,
+ service_task);
+
+ ixgbe_reset_subtask(adapter);
+ ixgbe_sfp_detection_subtask(adapter);
+ ixgbe_sfp_link_config_subtask(adapter);
+ ixgbe_check_overtemp_subtask(adapter);
+ ixgbe_watchdog_subtask(adapter);
+ ixgbe_fdir_reinit_subtask(adapter);
+ ixgbe_check_hang_subtask(adapter);
+
+ ixgbe_service_event_complete(adapter);
+}
+
+void ixgbe_tx_ctxtdesc(struct ixgbe_ring *tx_ring, u32 vlan_macip_lens,
+ u32 fcoe_sof_eof, u32 type_tucmd, u32 mss_l4len_idx)
+{
+ struct ixgbe_adv_tx_context_desc *context_desc;
+ u16 i = tx_ring->next_to_use;
+
+ context_desc = IXGBE_TX_CTXTDESC_ADV(tx_ring, i);
+
+ i++;
+ tx_ring->next_to_use = (i < tx_ring->count) ? i : 0;
+
+ /* set bits to identify this as an advanced context descriptor */
+ type_tucmd |= IXGBE_TXD_CMD_DEXT | IXGBE_ADVTXD_DTYP_CTXT;
+
+ context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens);
+ context_desc->seqnum_seed = cpu_to_le32(fcoe_sof_eof);
+ context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd);
+ context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx);
+}
+
+static int ixgbe_tso(struct ixgbe_ring *tx_ring, struct sk_buff *skb,
+ u32 tx_flags, __be16 protocol, u8 *hdr_len)
+{
+ int err;
+ u32 vlan_macip_lens, type_tucmd;
+ u32 mss_l4len_idx, l4len;
+
+ if (!skb_is_gso(skb))
+ return 0;
+
+ if (skb_header_cloned(skb)) {
+ err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
+ if (err)
+ return err;
+ }
+
+ /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
+ type_tucmd = IXGBE_ADVTXD_TUCMD_L4T_TCP;
+
+ if (protocol == __constant_htons(ETH_P_IP)) {
+ struct iphdr *iph = ip_hdr(skb);
+ iph->tot_len = 0;
+ iph->check = 0;
+ tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
+ iph->daddr, 0,
+ IPPROTO_TCP,
+ 0);
+ type_tucmd |= IXGBE_ADVTXD_TUCMD_IPV4;
+ } else if (skb_is_gso_v6(skb)) {
+ ipv6_hdr(skb)->payload_len = 0;
+ tcp_hdr(skb)->check =
+ ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
+ &ipv6_hdr(skb)->daddr,
+ 0, IPPROTO_TCP, 0);
+ }
+
+ l4len = tcp_hdrlen(skb);
+ *hdr_len = skb_transport_offset(skb) + l4len;
+
+ /* mss_l4len_id: use 1 as index for TSO */
+ mss_l4len_idx = l4len << IXGBE_ADVTXD_L4LEN_SHIFT;
+ mss_l4len_idx |= skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT;
+ mss_l4len_idx |= 1 << IXGBE_ADVTXD_IDX_SHIFT;
+
+ /* vlan_macip_lens: HEADLEN, MACLEN, VLAN tag */
+ vlan_macip_lens = skb_network_header_len(skb);
+ vlan_macip_lens |= skb_network_offset(skb) << IXGBE_ADVTXD_MACLEN_SHIFT;
+ vlan_macip_lens |= tx_flags & IXGBE_TX_FLAGS_VLAN_MASK;
+
+ ixgbe_tx_ctxtdesc(tx_ring, vlan_macip_lens, 0, type_tucmd,
+ mss_l4len_idx);
+
+ return 1;
+}
+
+static bool ixgbe_tx_csum(struct ixgbe_ring *tx_ring,
+ struct sk_buff *skb, u32 tx_flags,
+ __be16 protocol)
+{
+ u32 vlan_macip_lens = 0;
+ u32 mss_l4len_idx = 0;
+ u32 type_tucmd = 0;
+
+ if (skb->ip_summed != CHECKSUM_PARTIAL) {
+ if (!(tx_flags & IXGBE_TX_FLAGS_VLAN))
+ return false;
+ } else {
+ u8 l4_hdr = 0;
+ switch (protocol) {
+ case __constant_htons(ETH_P_IP):
+ vlan_macip_lens |= skb_network_header_len(skb);
+ type_tucmd |= IXGBE_ADVTXD_TUCMD_IPV4;
+ l4_hdr = ip_hdr(skb)->protocol;
+ break;
+ case __constant_htons(ETH_P_IPV6):
+ vlan_macip_lens |= skb_network_header_len(skb);
+ l4_hdr = ipv6_hdr(skb)->nexthdr;
+ break;
+ default:
+ if (unlikely(net_ratelimit())) {
+ dev_warn(tx_ring->dev,
+ "partial checksum but proto=%x!\n",
+ skb->protocol);
+ }
+ break;
+ }
+
+ switch (l4_hdr) {
+ case IPPROTO_TCP:
+ type_tucmd |= IXGBE_ADVTXD_TUCMD_L4T_TCP;
+ mss_l4len_idx = tcp_hdrlen(skb) <<
+ IXGBE_ADVTXD_L4LEN_SHIFT;
+ break;
+ case IPPROTO_SCTP:
+ type_tucmd |= IXGBE_ADVTXD_TUCMD_L4T_SCTP;
+ mss_l4len_idx = sizeof(struct sctphdr) <<
+ IXGBE_ADVTXD_L4LEN_SHIFT;
+ break;
+ case IPPROTO_UDP:
+ mss_l4len_idx = sizeof(struct udphdr) <<
+ IXGBE_ADVTXD_L4LEN_SHIFT;
+ break;
+ default:
+ if (unlikely(net_ratelimit())) {
+ dev_warn(tx_ring->dev,
+ "partial checksum but l4 proto=%x!\n",
+ skb->protocol);
+ }
+ break;
+ }
+ }
+
+ vlan_macip_lens |= skb_network_offset(skb) << IXGBE_ADVTXD_MACLEN_SHIFT;
+ vlan_macip_lens |= tx_flags & IXGBE_TX_FLAGS_VLAN_MASK;
+
+ ixgbe_tx_ctxtdesc(tx_ring, vlan_macip_lens, 0,
+ type_tucmd, mss_l4len_idx);
+
+ return (skb->ip_summed == CHECKSUM_PARTIAL);
+}
+
+static int ixgbe_tx_map(struct ixgbe_adapter *adapter,
+ struct ixgbe_ring *tx_ring,
+ struct sk_buff *skb, u32 tx_flags,
+ unsigned int first, const u8 hdr_len)
+{
+ struct device *dev = tx_ring->dev;
+ struct ixgbe_tx_buffer *tx_buffer_info;
+ unsigned int len;
+ unsigned int total = skb->len;
+ unsigned int offset = 0, size, count = 0;
+ unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
+ unsigned int f;
+ unsigned int bytecount = skb->len;
+ u16 gso_segs = 1;
+ u16 i;
+
+ i = tx_ring->next_to_use;
+
+ if (tx_flags & IXGBE_TX_FLAGS_FCOE)
+ /* excluding fcoe_crc_eof for FCoE */
+ total -= sizeof(struct fcoe_crc_eof);
+
+ len = min(skb_headlen(skb), total);
+ while (len) {
+ tx_buffer_info = &tx_ring->tx_buffer_info[i];
+ size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD);
+
+ tx_buffer_info->length = size;
+ tx_buffer_info->mapped_as_page = false;
+ tx_buffer_info->dma = dma_map_single(dev,
+ skb->data + offset,
+ size, DMA_TO_DEVICE);
+ if (dma_mapping_error(dev, tx_buffer_info->dma))
+ goto dma_error;
+ tx_buffer_info->time_stamp = jiffies;
+ tx_buffer_info->next_to_watch = i;
+
+ len -= size;
+ total -= size;
+ offset += size;
+ count++;
+
+ if (len) {
+ i++;
+ if (i == tx_ring->count)
+ i = 0;
+ }
+ }
+
+ for (f = 0; f < nr_frags; f++) {
+ struct skb_frag_struct *frag;
+
+ frag = &skb_shinfo(skb)->frags[f];
+ len = min((unsigned int)frag->size, total);
+ offset = frag->page_offset;
+
+ while (len) {
+ i++;
+ if (i == tx_ring->count)
+ i = 0;
+
+ tx_buffer_info = &tx_ring->tx_buffer_info[i];
+ size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD);
+
+ tx_buffer_info->length = size;
+ tx_buffer_info->dma = dma_map_page(dev,
+ frag->page,
+ offset, size,
+ DMA_TO_DEVICE);
+ tx_buffer_info->mapped_as_page = true;
+ if (dma_mapping_error(dev, tx_buffer_info->dma))
+ goto dma_error;
+ tx_buffer_info->time_stamp = jiffies;
+ tx_buffer_info->next_to_watch = i;
+
+ len -= size;
+ total -= size;
+ offset += size;
+ count++;
+ }
+ if (total == 0)
+ break;
+ }
+
+ if (tx_flags & IXGBE_TX_FLAGS_TSO)
+ gso_segs = skb_shinfo(skb)->gso_segs;
+#ifdef IXGBE_FCOE
+ /* adjust for FCoE Sequence Offload */
+ else if (tx_flags & IXGBE_TX_FLAGS_FSO)
+ gso_segs = DIV_ROUND_UP(skb->len - hdr_len,
+ skb_shinfo(skb)->gso_size);
+#endif /* IXGBE_FCOE */
+ bytecount += (gso_segs - 1) * hdr_len;
+
+ /* multiply data chunks by size of headers */
+ tx_ring->tx_buffer_info[i].bytecount = bytecount;
+ tx_ring->tx_buffer_info[i].gso_segs = gso_segs;
+ tx_ring->tx_buffer_info[i].skb = skb;
+ tx_ring->tx_buffer_info[first].next_to_watch = i;
+
+ return count;
+
+dma_error:
+ e_dev_err("TX DMA map failed\n");
+
+ /* clear timestamp and dma mappings for failed tx_buffer_info map */
+ tx_buffer_info->dma = 0;
+ tx_buffer_info->time_stamp = 0;
+ tx_buffer_info->next_to_watch = 0;
+ if (count)
+ count--;
+
+ /* clear timestamp and dma mappings for remaining portion of packet */
+ while (count--) {
+ if (i == 0)
+ i += tx_ring->count;
+ i--;
+ tx_buffer_info = &tx_ring->tx_buffer_info[i];
+ ixgbe_unmap_and_free_tx_resource(tx_ring, tx_buffer_info);
+ }
+
+ return 0;
+}
+
+static void ixgbe_tx_queue(struct ixgbe_ring *tx_ring,
+ int tx_flags, int count, u32 paylen, u8 hdr_len)
+{
+ union ixgbe_adv_tx_desc *tx_desc = NULL;
+ struct ixgbe_tx_buffer *tx_buffer_info;
+ u32 olinfo_status = 0, cmd_type_len = 0;
+ unsigned int i;
+ u32 txd_cmd = IXGBE_TXD_CMD_EOP | IXGBE_TXD_CMD_RS | IXGBE_TXD_CMD_IFCS;
+
+ cmd_type_len |= IXGBE_ADVTXD_DTYP_DATA;
+
+ cmd_type_len |= IXGBE_ADVTXD_DCMD_IFCS | IXGBE_ADVTXD_DCMD_DEXT;
+
+ if (tx_flags & IXGBE_TX_FLAGS_VLAN)
+ cmd_type_len |= IXGBE_ADVTXD_DCMD_VLE;
+
+ if (tx_flags & IXGBE_TX_FLAGS_TSO) {
+ cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE;
+
+ olinfo_status |= IXGBE_TXD_POPTS_TXSM <<
+ IXGBE_ADVTXD_POPTS_SHIFT;
+
+ /* use index 1 context for tso */
+ olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
+ if (tx_flags & IXGBE_TX_FLAGS_IPV4)
+ olinfo_status |= IXGBE_TXD_POPTS_IXSM <<
+ IXGBE_ADVTXD_POPTS_SHIFT;
+
+ } else if (tx_flags & IXGBE_TX_FLAGS_CSUM)
+ olinfo_status |= IXGBE_TXD_POPTS_TXSM <<
+ IXGBE_ADVTXD_POPTS_SHIFT;
+
+ if (tx_flags & IXGBE_TX_FLAGS_FCOE) {
+ olinfo_status |= IXGBE_ADVTXD_CC;
+ olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
+ if (tx_flags & IXGBE_TX_FLAGS_FSO)
+ cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE;
+ }
+
+ olinfo_status |= ((paylen - hdr_len) << IXGBE_ADVTXD_PAYLEN_SHIFT);
+
+ i = tx_ring->next_to_use;
+ while (count--) {
+ tx_buffer_info = &tx_ring->tx_buffer_info[i];
+ tx_desc = IXGBE_TX_DESC_ADV(tx_ring, i);
+ tx_desc->read.buffer_addr = cpu_to_le64(tx_buffer_info->dma);
+ tx_desc->read.cmd_type_len =
+ cpu_to_le32(cmd_type_len | tx_buffer_info->length);
+ tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
+ i++;
+ if (i == tx_ring->count)
+ i = 0;
+ }
+
+ tx_desc->read.cmd_type_len |= cpu_to_le32(txd_cmd);
+
+ /*
+ * Force memory writes to complete before letting h/w
+ * know there are new descriptors to fetch. (Only
+ * applicable for weak-ordered memory model archs,
+ * such as IA-64).
+ */
+ wmb();
+
+ tx_ring->next_to_use = i;
+ writel(i, tx_ring->tail);
+}
+
+static void ixgbe_atr(struct ixgbe_ring *ring, struct sk_buff *skb,
+ u32 tx_flags, __be16 protocol)
+{
+ struct ixgbe_q_vector *q_vector = ring->q_vector;
+ union ixgbe_atr_hash_dword input = { .dword = 0 };
+ union ixgbe_atr_hash_dword common = { .dword = 0 };
+ union {
+ unsigned char *network;
+ struct iphdr *ipv4;
+ struct ipv6hdr *ipv6;
+ } hdr;
+ struct tcphdr *th;
+ __be16 vlan_id;
+
+ /* if ring doesn't have a interrupt vector, cannot perform ATR */
+ if (!q_vector)
+ return;
+
+ /* do nothing if sampling is disabled */
+ if (!ring->atr_sample_rate)
+ return;
+
+ ring->atr_count++;
+
+ /* snag network header to get L4 type and address */
+ hdr.network = skb_network_header(skb);
+
+ /* Currently only IPv4/IPv6 with TCP is supported */
+ if ((protocol != __constant_htons(ETH_P_IPV6) ||
+ hdr.ipv6->nexthdr != IPPROTO_TCP) &&
+ (protocol != __constant_htons(ETH_P_IP) ||
+ hdr.ipv4->protocol != IPPROTO_TCP))
+ return;
+
+ th = tcp_hdr(skb);
+
+ /* skip this packet since the socket is closing */
+ if (th->fin)
+ return;
+
+ /* sample on all syn packets or once every atr sample count */
+ if (!th->syn && (ring->atr_count < ring->atr_sample_rate))
+ return;
+
+ /* reset sample count */
+ ring->atr_count = 0;
+
+ vlan_id = htons(tx_flags >> IXGBE_TX_FLAGS_VLAN_SHIFT);
+
+ /*
+ * src and dst are inverted, think how the receiver sees them
+ *
+ * The input is broken into two sections, a non-compressed section
+ * containing vm_pool, vlan_id, and flow_type. The rest of the data
+ * is XORed together and stored in the compressed dword.
+ */
+ input.formatted.vlan_id = vlan_id;
+
+ /*
+ * since src port and flex bytes occupy the same word XOR them together
+ * and write the value to source port portion of compressed dword
+ */
+ if (vlan_id)
+ common.port.src ^= th->dest ^ __constant_htons(ETH_P_8021Q);
+ else
+ common.port.src ^= th->dest ^ protocol;
+ common.port.dst ^= th->source;
+
+ if (protocol == __constant_htons(ETH_P_IP)) {
+ input.formatted.flow_type = IXGBE_ATR_FLOW_TYPE_TCPV4;
+ common.ip ^= hdr.ipv4->saddr ^ hdr.ipv4->daddr;
+ } else {
+ input.formatted.flow_type = IXGBE_ATR_FLOW_TYPE_TCPV6;
+ common.ip ^= hdr.ipv6->saddr.s6_addr32[0] ^
+ hdr.ipv6->saddr.s6_addr32[1] ^
+ hdr.ipv6->saddr.s6_addr32[2] ^
+ hdr.ipv6->saddr.s6_addr32[3] ^
+ hdr.ipv6->daddr.s6_addr32[0] ^
+ hdr.ipv6->daddr.s6_addr32[1] ^
+ hdr.ipv6->daddr.s6_addr32[2] ^
+ hdr.ipv6->daddr.s6_addr32[3];
+ }
+
+ /* This assumes the Rx queue and Tx queue are bound to the same CPU */
+ ixgbe_fdir_add_signature_filter_82599(&q_vector->adapter->hw,
+ input, common, ring->queue_index);
+}
+
+static int __ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, u16 size)
+{
+ netif_stop_subqueue(tx_ring->netdev, tx_ring->queue_index);
+ /* Herbert's original patch had:
+ * smp_mb__after_netif_stop_queue();
+ * but since that doesn't exist yet, just open code it. */
+ smp_mb();
+
+ /* We need to check again in a case another CPU has just
+ * made room available. */
+ if (likely(ixgbe_desc_unused(tx_ring) < size))
+ return -EBUSY;
+
+ /* A reprieve! - use start_queue because it doesn't call schedule */
+ netif_start_subqueue(tx_ring->netdev, tx_ring->queue_index);
+ ++tx_ring->tx_stats.restart_queue;
+ return 0;
+}
+
+static inline int ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, u16 size)
+{
+ if (likely(ixgbe_desc_unused(tx_ring) >= size))
+ return 0;
+ return __ixgbe_maybe_stop_tx(tx_ring, size);
+}
+
+static u16 ixgbe_select_queue(struct net_device *dev, struct sk_buff *skb)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(dev);
+ int txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) :
+ smp_processor_id();
+#ifdef IXGBE_FCOE
+ __be16 protocol = vlan_get_protocol(skb);
+
+ if (((protocol == htons(ETH_P_FCOE)) ||
+ (protocol == htons(ETH_P_FIP))) &&
+ (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)) {
+ txq &= (adapter->ring_feature[RING_F_FCOE].indices - 1);
+ txq += adapter->ring_feature[RING_F_FCOE].mask;
+ return txq;
+ }
+#endif
+
+ if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
+ while (unlikely(txq >= dev->real_num_tx_queues))
+ txq -= dev->real_num_tx_queues;
+ return txq;
+ }
+
+ return skb_tx_hash(dev, skb);
+}
+
+netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *skb,
+ struct ixgbe_adapter *adapter,
+ struct ixgbe_ring *tx_ring)
+{
+ int tso;
+ u32 tx_flags = 0;
+#if PAGE_SIZE > IXGBE_MAX_DATA_PER_TXD
+ unsigned short f;
+#endif
+ u16 first;
+ u16 count = TXD_USE_COUNT(skb_headlen(skb));
+ __be16 protocol;
+ u8 hdr_len = 0;
+
+ /*
+ * need: 1 descriptor per page * PAGE_SIZE/IXGBE_MAX_DATA_PER_TXD,
+ * + 1 desc for skb_head_len/IXGBE_MAX_DATA_PER_TXD,
+ * + 2 desc gap to keep tail from touching head,
+ * + 1 desc for context descriptor,
+ * otherwise try next time
+ */
+#if PAGE_SIZE > IXGBE_MAX_DATA_PER_TXD
+ for (f = 0; f < skb_shinfo(skb)->nr_frags; f++)
+ count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size);
+#else
+ count += skb_shinfo(skb)->nr_frags;
+#endif
+ if (ixgbe_maybe_stop_tx(tx_ring, count + 3)) {
+ tx_ring->tx_stats.tx_busy++;
+ return NETDEV_TX_BUSY;
+ }
+
+ protocol = vlan_get_protocol(skb);
+
+ if (vlan_tx_tag_present(skb)) {
+ tx_flags |= vlan_tx_tag_get(skb);
+ if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
+ tx_flags &= ~IXGBE_TX_FLAGS_VLAN_PRIO_MASK;
+ tx_flags |= tx_ring->dcb_tc << 13;
+ }
+ tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
+ tx_flags |= IXGBE_TX_FLAGS_VLAN;
+ } else if (adapter->flags & IXGBE_FLAG_DCB_ENABLED &&
+ skb->priority != TC_PRIO_CONTROL) {
+ tx_flags |= tx_ring->dcb_tc << 13;
+ tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
+ tx_flags |= IXGBE_TX_FLAGS_VLAN;
+ }
+
+#ifdef IXGBE_FCOE
+ /* for FCoE with DCB, we force the priority to what
+ * was specified by the switch */
+ if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED &&
+ (protocol == htons(ETH_P_FCOE)))
+ tx_flags |= IXGBE_TX_FLAGS_FCOE;
+
+#endif
+ /* record the location of the first descriptor for this packet */
+ first = tx_ring->next_to_use;
+
+ if (tx_flags & IXGBE_TX_FLAGS_FCOE) {
+#ifdef IXGBE_FCOE
+ /* setup tx offload for FCoE */
+ tso = ixgbe_fso(tx_ring, skb, tx_flags, &hdr_len);
+ if (tso < 0)
+ goto out_drop;
+ else if (tso)
+ tx_flags |= IXGBE_TX_FLAGS_FSO;
+#endif /* IXGBE_FCOE */
+ } else {
+ if (protocol == htons(ETH_P_IP))
+ tx_flags |= IXGBE_TX_FLAGS_IPV4;
+ tso = ixgbe_tso(tx_ring, skb, tx_flags, protocol, &hdr_len);
+ if (tso < 0)
+ goto out_drop;
+ else if (tso)
+ tx_flags |= IXGBE_TX_FLAGS_TSO;
+ else if (ixgbe_tx_csum(tx_ring, skb, tx_flags, protocol))
+ tx_flags |= IXGBE_TX_FLAGS_CSUM;
+ }
+
+ count = ixgbe_tx_map(adapter, tx_ring, skb, tx_flags, first, hdr_len);
+ if (count) {
+ /* add the ATR filter if ATR is on */
+ if (test_bit(__IXGBE_TX_FDIR_INIT_DONE, &tx_ring->state))
+ ixgbe_atr(tx_ring, skb, tx_flags, protocol);
+ ixgbe_tx_queue(tx_ring, tx_flags, count, skb->len, hdr_len);
+ ixgbe_maybe_stop_tx(tx_ring, DESC_NEEDED);
+
+ } else {
+ tx_ring->tx_buffer_info[first].time_stamp = 0;
+ tx_ring->next_to_use = first;
+ goto out_drop;
+ }
+
+ return NETDEV_TX_OK;
+
+out_drop:
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+}
+
+static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+ struct ixgbe_ring *tx_ring;
+
+ tx_ring = adapter->tx_ring[skb->queue_mapping];
+ return ixgbe_xmit_frame_ring(skb, adapter, tx_ring);
+}
+
+/**
+ * ixgbe_set_mac - Change the Ethernet Address of the NIC
+ * @netdev: network interface device structure
+ * @p: pointer to an address structure
+ *
+ * Returns 0 on success, negative on failure
+ **/
+static int ixgbe_set_mac(struct net_device *netdev, void *p)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+ struct ixgbe_hw *hw = &adapter->hw;
+ struct sockaddr *addr = p;
+
+ if (!is_valid_ether_addr(addr->sa_data))
+ return -EADDRNOTAVAIL;
+
+ memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
+ memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
+
+ hw->mac.ops.set_rar(hw, 0, hw->mac.addr, adapter->num_vfs,
+ IXGBE_RAH_AV);
+
+ return 0;
+}
+
+static int
+ixgbe_mdio_read(struct net_device *netdev, int prtad, int devad, u16 addr)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+ struct ixgbe_hw *hw = &adapter->hw;
+ u16 value;
+ int rc;
+
+ if (prtad != hw->phy.mdio.prtad)
+ return -EINVAL;
+ rc = hw->phy.ops.read_reg(hw, addr, devad, &value);
+ if (!rc)
+ rc = value;
+ return rc;
+}
+
+static int ixgbe_mdio_write(struct net_device *netdev, int prtad, int devad,
+ u16 addr, u16 value)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+ struct ixgbe_hw *hw = &adapter->hw;
+
+ if (prtad != hw->phy.mdio.prtad)
+ return -EINVAL;
+ return hw->phy.ops.write_reg(hw, addr, devad, value);
+}
+
+static int ixgbe_ioctl(struct net_device *netdev, struct ifreq *req, int cmd)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+
+ return mdio_mii_ioctl(&adapter->hw.phy.mdio, if_mii(req), cmd);
+}
+
+/**
+ * ixgbe_add_sanmac_netdev - Add the SAN MAC address to the corresponding
+ * netdev->dev_addrs
+ * @netdev: network interface device structure
+ *
+ * Returns non-zero on failure
+ **/
+static int ixgbe_add_sanmac_netdev(struct net_device *dev)
+{
+ int err = 0;
+ struct ixgbe_adapter *adapter = netdev_priv(dev);
+ struct ixgbe_mac_info *mac = &adapter->hw.mac;
+
+ if (is_valid_ether_addr(mac->san_addr)) {
+ rtnl_lock();
+ err = dev_addr_add(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN);
+ rtnl_unlock();
+ }
+ return err;
+}
+
+/**
+ * ixgbe_del_sanmac_netdev - Removes the SAN MAC address to the corresponding
+ * netdev->dev_addrs
+ * @netdev: network interface device structure
+ *
+ * Returns non-zero on failure
+ **/
+static int ixgbe_del_sanmac_netdev(struct net_device *dev)
+{
+ int err = 0;
+ struct ixgbe_adapter *adapter = netdev_priv(dev);
+ struct ixgbe_mac_info *mac = &adapter->hw.mac;
+
+ if (is_valid_ether_addr(mac->san_addr)) {
+ rtnl_lock();
+ err = dev_addr_del(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN);
+ rtnl_unlock();
+ }
+ return err;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/*
+ * Polling 'interrupt' - used by things like netconsole to send skbs
+ * without having to re-enable interrupts. It's not called while
+ * the interrupt routine is executing.
+ */
+static void ixgbe_netpoll(struct net_device *netdev)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+ int i;
+
+ /* if interface is down do nothing */
+ if (test_bit(__IXGBE_DOWN, &adapter->state))
+ return;
+
+ adapter->flags |= IXGBE_FLAG_IN_NETPOLL;
+ if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
+ int num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
+ for (i = 0; i < num_q_vectors; i++) {
+ struct ixgbe_q_vector *q_vector = adapter->q_vector[i];
+ ixgbe_msix_clean_many(0, q_vector);
+ }
+ } else {
+ ixgbe_intr(adapter->pdev->irq, netdev);
+ }
+ adapter->flags &= ~IXGBE_FLAG_IN_NETPOLL;
+}
+#endif
+
+static struct rtnl_link_stats64 *ixgbe_get_stats64(struct net_device *netdev,
+ struct rtnl_link_stats64 *stats)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+ int i;
+
+ rcu_read_lock();
+ for (i = 0; i < adapter->num_rx_queues; i++) {
+ struct ixgbe_ring *ring = ACCESS_ONCE(adapter->rx_ring[i]);
+ u64 bytes, packets;
+ unsigned int start;
+
+ if (ring) {
+ do {
+ start = u64_stats_fetch_begin_bh(&ring->syncp);
+ packets = ring->stats.packets;
+ bytes = ring->stats.bytes;
+ } while (u64_stats_fetch_retry_bh(&ring->syncp, start));
+ stats->rx_packets += packets;
+ stats->rx_bytes += bytes;
+ }
+ }
+
+ for (i = 0; i < adapter->num_tx_queues; i++) {
+ struct ixgbe_ring *ring = ACCESS_ONCE(adapter->tx_ring[i]);
+ u64 bytes, packets;
+ unsigned int start;
+
+ if (ring) {
+ do {
+ start = u64_stats_fetch_begin_bh(&ring->syncp);
+ packets = ring->stats.packets;
+ bytes = ring->stats.bytes;
+ } while (u64_stats_fetch_retry_bh(&ring->syncp, start));
+ stats->tx_packets += packets;
+ stats->tx_bytes += bytes;
+ }
+ }
+ rcu_read_unlock();
+ /* following stats updated by ixgbe_watchdog_task() */
+ stats->multicast = netdev->stats.multicast;
+ stats->rx_errors = netdev->stats.rx_errors;
+ stats->rx_length_errors = netdev->stats.rx_length_errors;
+ stats->rx_crc_errors = netdev->stats.rx_crc_errors;
+ stats->rx_missed_errors = netdev->stats.rx_missed_errors;
+ return stats;
+}
+
+/* ixgbe_validate_rtr - verify 802.1Qp to Rx packet buffer mapping is valid.
+ * #adapter: pointer to ixgbe_adapter
+ * @tc: number of traffic classes currently enabled
+ *
+ * Configure a valid 802.1Qp to Rx packet buffer mapping ie confirm
+ * 802.1Q priority maps to a packet buffer that exists.
+ */
+static void ixgbe_validate_rtr(struct ixgbe_adapter *adapter, u8 tc)
+{
+ struct ixgbe_hw *hw = &adapter->hw;
+ u32 reg, rsave;
+ int i;
+
+ /* 82598 have a static priority to TC mapping that can not
+ * be changed so no validation is needed.
+ */
+ if (hw->mac.type == ixgbe_mac_82598EB)
+ return;
+
+ reg = IXGBE_READ_REG(hw, IXGBE_RTRUP2TC);
+ rsave = reg;
+
+ for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
+ u8 up2tc = reg >> (i * IXGBE_RTRUP2TC_UP_SHIFT);
+
+ /* If up2tc is out of bounds default to zero */
+ if (up2tc > tc)
+ reg &= ~(0x7 << IXGBE_RTRUP2TC_UP_SHIFT);
+ }
+
+ if (reg != rsave)
+ IXGBE_WRITE_REG(hw, IXGBE_RTRUP2TC, reg);
+
+ return;
+}
+
+
+/* ixgbe_setup_tc - routine to configure net_device for multiple traffic
+ * classes.
+ *
+ * @netdev: net device to configure
+ * @tc: number of traffic classes to enable
+ */
+int ixgbe_setup_tc(struct net_device *dev, u8 tc)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(dev);
+ struct ixgbe_hw *hw = &adapter->hw;
+
+ /* If DCB is anabled do not remove traffic classes, multiple
+ * traffic classes are required to implement DCB
+ */
+ if (!tc && (adapter->flags & IXGBE_FLAG_DCB_ENABLED))
+ return 0;
+
+ /* Hardware supports up to 8 traffic classes */
+ if (tc > MAX_TRAFFIC_CLASS ||
+ (hw->mac.type == ixgbe_mac_82598EB && tc < MAX_TRAFFIC_CLASS))
+ return -EINVAL;
+
+ /* Hardware has to reinitialize queues and interrupts to
+ * match packet buffer alignment. Unfortunantly, the
+ * hardware is not flexible enough to do this dynamically.
+ */
+ if (netif_running(dev))
+ ixgbe_close(dev);
+ ixgbe_clear_interrupt_scheme(adapter);
+
+ if (tc)
+ netdev_set_num_tc(dev, tc);
+ else
+ netdev_reset_tc(dev);
+
+ ixgbe_init_interrupt_scheme(adapter);
+ ixgbe_validate_rtr(adapter, tc);
+ if (netif_running(dev))
+ ixgbe_open(dev);
+
+ return 0;
+}
+
+void ixgbe_do_reset(struct net_device *netdev)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+
+ if (netif_running(netdev))
+ ixgbe_reinit_locked(adapter);
+ else
+ ixgbe_reset(adapter);
+}
+
+static u32 ixgbe_fix_features(struct net_device *netdev, u32 data)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+
+#ifdef CONFIG_DCB
+ if (adapter->flags & IXGBE_FLAG_DCB_ENABLED)
+ data &= ~NETIF_F_HW_VLAN_RX;
+#endif
+
+ /* return error if RXHASH is being enabled when RSS is not supported */
+ if (!(adapter->flags & IXGBE_FLAG_RSS_ENABLED))
+ data &= ~NETIF_F_RXHASH;
+
+ /* If Rx checksum is disabled, then RSC/LRO should also be disabled */
+ if (!(data & NETIF_F_RXCSUM))
+ data &= ~NETIF_F_LRO;
+
+ /* Turn off LRO if not RSC capable or invalid ITR settings */
+ if (!(adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE)) {
+ data &= ~NETIF_F_LRO;
+ } else if (!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) &&
+ (adapter->rx_itr_setting != 1 &&
+ adapter->rx_itr_setting > IXGBE_MAX_RSC_INT_RATE)) {
+ data &= ~NETIF_F_LRO;
+ e_info(probe, "rx-usecs set too low, not enabling RSC\n");
+ }
+
+ return data;
+}
+
+static int ixgbe_set_features(struct net_device *netdev, u32 data)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+ bool need_reset = false;
+
+ /* If Rx checksum is disabled, then RSC/LRO should also be disabled */
+ if (!(data & NETIF_F_RXCSUM))
+ adapter->flags &= ~IXGBE_FLAG_RX_CSUM_ENABLED;
+ else
+ adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED;
+
+ /* Make sure RSC matches LRO, reset if change */
+ if (!!(data & NETIF_F_LRO) !=
+ !!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)) {
+ adapter->flags2 ^= IXGBE_FLAG2_RSC_ENABLED;
+ switch (adapter->hw.mac.type) {
+ case ixgbe_mac_X540:
+ case ixgbe_mac_82599EB:
+ need_reset = true;
+ break;
+ default:
+ break;
+ }
+ }
+
+ /*
+ * Check if Flow Director n-tuple support was enabled or disabled. If
+ * the state changed, we need to reset.
+ */
+ if (!(adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)) {
+ /* turn off ATR, enable perfect filters and reset */
+ if (data & NETIF_F_NTUPLE) {
+ adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
+ adapter->flags |= IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
+ need_reset = true;
+ }
+ } else if (!(data & NETIF_F_NTUPLE)) {
+ /* turn off Flow Director, set ATR and reset */
+ adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
+ if ((adapter->flags & IXGBE_FLAG_RSS_ENABLED) &&
+ !(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
+ adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
+ need_reset = true;
+ }
+
+ if (need_reset)
+ ixgbe_do_reset(netdev);
+
+ return 0;
+
+}
+
+static const struct net_device_ops ixgbe_netdev_ops = {
+ .ndo_open = ixgbe_open,
+ .ndo_stop = ixgbe_close,
+ .ndo_start_xmit = ixgbe_xmit_frame,
+ .ndo_select_queue = ixgbe_select_queue,
+ .ndo_set_rx_mode = ixgbe_set_rx_mode,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_mac_address = ixgbe_set_mac,
+ .ndo_change_mtu = ixgbe_change_mtu,
+ .ndo_tx_timeout = ixgbe_tx_timeout,
+ .ndo_vlan_rx_add_vid = ixgbe_vlan_rx_add_vid,
+ .ndo_vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid,
+ .ndo_do_ioctl = ixgbe_ioctl,
+ .ndo_set_vf_mac = ixgbe_ndo_set_vf_mac,
+ .ndo_set_vf_vlan = ixgbe_ndo_set_vf_vlan,
+ .ndo_set_vf_tx_rate = ixgbe_ndo_set_vf_bw,
+ .ndo_get_vf_config = ixgbe_ndo_get_vf_config,
+ .ndo_get_stats64 = ixgbe_get_stats64,
+ .ndo_setup_tc = ixgbe_setup_tc,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = ixgbe_netpoll,
+#endif
+#ifdef IXGBE_FCOE
+ .ndo_fcoe_ddp_setup = ixgbe_fcoe_ddp_get,
+ .ndo_fcoe_ddp_target = ixgbe_fcoe_ddp_target,
+ .ndo_fcoe_ddp_done = ixgbe_fcoe_ddp_put,
+ .ndo_fcoe_enable = ixgbe_fcoe_enable,
+ .ndo_fcoe_disable = ixgbe_fcoe_disable,
+ .ndo_fcoe_get_wwn = ixgbe_fcoe_get_wwn,
+#endif /* IXGBE_FCOE */
+ .ndo_set_features = ixgbe_set_features,
+ .ndo_fix_features = ixgbe_fix_features,
+};
+
+static void __devinit ixgbe_probe_vf(struct ixgbe_adapter *adapter,
+ const struct ixgbe_info *ii)
+{
+#ifdef CONFIG_PCI_IOV
+ struct ixgbe_hw *hw = &adapter->hw;
+ int err;
+ int num_vf_macvlans, i;
+ struct vf_macvlans *mv_list;
+
+ if (hw->mac.type == ixgbe_mac_82598EB || !max_vfs)
+ return;
+
+ /* The 82599 supports up to 64 VFs per physical function
+ * but this implementation limits allocation to 63 so that
+ * basic networking resources are still available to the
+ * physical function
+ */
+ adapter->num_vfs = (max_vfs > 63) ? 63 : max_vfs;
+ adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED;
+ err = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
+ if (err) {
+ e_err(probe, "Failed to enable PCI sriov: %d\n", err);
+ goto err_novfs;
+ }
+
+ num_vf_macvlans = hw->mac.num_rar_entries -
+ (IXGBE_MAX_PF_MACVLANS + 1 + adapter->num_vfs);
+
+ adapter->mv_list = mv_list = kcalloc(num_vf_macvlans,
+ sizeof(struct vf_macvlans),
+ GFP_KERNEL);
+ if (mv_list) {
+ /* Initialize list of VF macvlans */
+ INIT_LIST_HEAD(&adapter->vf_mvs.l);
+ for (i = 0; i < num_vf_macvlans; i++) {
+ mv_list->vf = -1;
+ mv_list->free = true;
+ mv_list->rar_entry = hw->mac.num_rar_entries -
+ (i + adapter->num_vfs + 1);
+ list_add(&mv_list->l, &adapter->vf_mvs.l);
+ mv_list++;
+ }
+ }
+
+ /* If call to enable VFs succeeded then allocate memory
+ * for per VF control structures.
+ */
+ adapter->vfinfo =
+ kcalloc(adapter->num_vfs,
+ sizeof(struct vf_data_storage), GFP_KERNEL);
+ if (adapter->vfinfo) {
+ /* Now that we're sure SR-IOV is enabled
+ * and memory allocated set up the mailbox parameters
+ */
+ ixgbe_init_mbx_params_pf(hw);
+ memcpy(&hw->mbx.ops, ii->mbx_ops,
+ sizeof(hw->mbx.ops));
+
+ /* Disable RSC when in SR-IOV mode */
+ adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE |
+ IXGBE_FLAG2_RSC_ENABLED);
+ return;
+ }
+
+ /* Oh oh */
+ e_err(probe, "Unable to allocate memory for VF Data Storage - "
+ "SRIOV disabled\n");
+ pci_disable_sriov(adapter->pdev);
+
+err_novfs:
+ adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
+ adapter->num_vfs = 0;
+#endif /* CONFIG_PCI_IOV */
+}
+
+/**
+ * ixgbe_probe - Device Initialization Routine
+ * @pdev: PCI device information struct
+ * @ent: entry in ixgbe_pci_tbl
+ *
+ * Returns 0 on success, negative on failure
+ *
+ * ixgbe_probe initializes an adapter identified by a pci_dev structure.
+ * The OS initialization, configuring of the adapter private structure,
+ * and a hardware reset occur.
+ **/
+static int __devinit ixgbe_probe(struct pci_dev *pdev,
+ const struct pci_device_id *ent)
+{
+ struct net_device *netdev;
+ struct ixgbe_adapter *adapter = NULL;
+ struct ixgbe_hw *hw;
+ const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data];
+ static int cards_found;
+ int i, err, pci_using_dac;
+ u8 part_str[IXGBE_PBANUM_LENGTH];
+ unsigned int indices = num_possible_cpus();
+#ifdef IXGBE_FCOE
+ u16 device_caps;
+#endif
+ u32 eec;
+
+ /* Catch broken hardware that put the wrong VF device ID in
+ * the PCIe SR-IOV capability.
+ */
+ if (pdev->is_virtfn) {
+ WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n",
+ pci_name(pdev), pdev->vendor, pdev->device);
+ return -EINVAL;
+ }
+
+ err = pci_enable_device_mem(pdev);
+ if (err)
+ return err;
+
+ if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) &&
+ !dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) {
+ pci_using_dac = 1;
+ } else {
+ err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
+ if (err) {
+ err = dma_set_coherent_mask(&pdev->dev,
+ DMA_BIT_MASK(32));
+ if (err) {
+ dev_err(&pdev->dev,
+ "No usable DMA configuration, aborting\n");
+ goto err_dma;
+ }
+ }
+ pci_using_dac = 0;
+ }
+
+ err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
+ IORESOURCE_MEM), ixgbe_driver_name);
+ if (err) {
+ dev_err(&pdev->dev,
+ "pci_request_selected_regions failed 0x%x\n", err);
+ goto err_pci_reg;
+ }
+
+ pci_enable_pcie_error_reporting(pdev);
+
+ pci_set_master(pdev);
+ pci_save_state(pdev);
+
+#ifdef CONFIG_IXGBE_DCB
+ indices *= MAX_TRAFFIC_CLASS;
+#endif
+
+ if (ii->mac == ixgbe_mac_82598EB)
+ indices = min_t(unsigned int, indices, IXGBE_MAX_RSS_INDICES);
+ else
+ indices = min_t(unsigned int, indices, IXGBE_MAX_FDIR_INDICES);
+
+#ifdef IXGBE_FCOE
+ indices += min_t(unsigned int, num_possible_cpus(),
+ IXGBE_MAX_FCOE_INDICES);
+#endif
+ netdev = alloc_etherdev_mq(sizeof(struct ixgbe_adapter), indices);
+ if (!netdev) {
+ err = -ENOMEM;
+ goto err_alloc_etherdev;
+ }
+
+ SET_NETDEV_DEV(netdev, &pdev->dev);
+
+ adapter = netdev_priv(netdev);
+ pci_set_drvdata(pdev, adapter);
+
+ adapter->netdev = netdev;
+ adapter->pdev = pdev;
+ hw = &adapter->hw;
+ hw->back = adapter;
+ adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
+
+ hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
+ pci_resource_len(pdev, 0));
+ if (!hw->hw_addr) {
+ err = -EIO;
+ goto err_ioremap;
+ }
+
+ for (i = 1; i <= 5; i++) {
+ if (pci_resource_len(pdev, i) == 0)
+ continue;
+ }
+
+ netdev->netdev_ops = &ixgbe_netdev_ops;
+ ixgbe_set_ethtool_ops(netdev);
+ netdev->watchdog_timeo = 5 * HZ;
+ strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
+
+ adapter->bd_number = cards_found;
+
+ /* Setup hw api */
+ memcpy(&hw->mac.ops, ii->mac_ops, sizeof(hw->mac.ops));
+ hw->mac.type = ii->mac;
+
+ /* EEPROM */
+ memcpy(&hw->eeprom.ops, ii->eeprom_ops, sizeof(hw->eeprom.ops));
+ eec = IXGBE_READ_REG(hw, IXGBE_EEC);
+ /* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */
+ if (!(eec & (1 << 8)))
+ hw->eeprom.ops.read = &ixgbe_read_eeprom_bit_bang_generic;
+
+ /* PHY */
+ memcpy(&hw->phy.ops, ii->phy_ops, sizeof(hw->phy.ops));
+ hw->phy.sfp_type = ixgbe_sfp_type_unknown;
+ /* ixgbe_identify_phy_generic will set prtad and mmds properly */
+ hw->phy.mdio.prtad = MDIO_PRTAD_NONE;
+ hw->phy.mdio.mmds = 0;
+ hw->phy.mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
+ hw->phy.mdio.dev = netdev;
+ hw->phy.mdio.mdio_read = ixgbe_mdio_read;
+ hw->phy.mdio.mdio_write = ixgbe_mdio_write;
+
+ ii->get_invariants(hw);
+
+ /* setup the private structure */
+ err = ixgbe_sw_init(adapter);
+ if (err)
+ goto err_sw_init;
+
+ /* Make it possible the adapter to be woken up via WOL */
+ switch (adapter->hw.mac.type) {
+ case ixgbe_mac_82599EB:
+ case ixgbe_mac_X540:
+ IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
+ break;
+ default:
+ break;
+ }
+
+ /*
+ * If there is a fan on this device and it has failed log the
+ * failure.
+ */
+ if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
+ u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
+ if (esdp & IXGBE_ESDP_SDP1)
+ e_crit(probe, "Fan has stopped, replace the adapter\n");
+ }
+
+ /* reset_hw fills in the perm_addr as well */
+ hw->phy.reset_if_overtemp = true;
+ err = hw->mac.ops.reset_hw(hw);
+ hw->phy.reset_if_overtemp = false;
+ if (err == IXGBE_ERR_SFP_NOT_PRESENT &&
+ hw->mac.type == ixgbe_mac_82598EB) {
+ err = 0;
+ } else if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) {
+ e_dev_err("failed to load because an unsupported SFP+ "
+ "module type was detected.\n");
+ e_dev_err("Reload the driver after installing a supported "
+ "module.\n");
+ goto err_sw_init;
+ } else if (err) {
+ e_dev_err("HW Init failed: %d\n", err);
+ goto err_sw_init;
+ }
+
+ ixgbe_probe_vf(adapter, ii);
+
+ netdev->features = NETIF_F_SG |
+ NETIF_F_IP_CSUM |
+ NETIF_F_IPV6_CSUM |
+ NETIF_F_HW_VLAN_TX |
+ NETIF_F_HW_VLAN_RX |
+ NETIF_F_HW_VLAN_FILTER |
+ NETIF_F_TSO |
+ NETIF_F_TSO6 |
+ NETIF_F_GRO |
+ NETIF_F_RXHASH |
+ NETIF_F_RXCSUM;
+
+ netdev->hw_features = netdev->features;
+
+ switch (adapter->hw.mac.type) {
+ case ixgbe_mac_82599EB:
+ case ixgbe_mac_X540:
+ netdev->features |= NETIF_F_SCTP_CSUM;
+ netdev->hw_features |= NETIF_F_SCTP_CSUM |
+ NETIF_F_NTUPLE;
+ break;
+ default:
+ break;
+ }
+
+ netdev->vlan_features |= NETIF_F_TSO;
+ netdev->vlan_features |= NETIF_F_TSO6;
+ netdev->vlan_features |= NETIF_F_IP_CSUM;
+ netdev->vlan_features |= NETIF_F_IPV6_CSUM;
+ netdev->vlan_features |= NETIF_F_SG;
+
+ netdev->priv_flags |= IFF_UNICAST_FLT;
+
+ if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
+ adapter->flags &= ~(IXGBE_FLAG_RSS_ENABLED |
+ IXGBE_FLAG_DCB_ENABLED);
+
+#ifdef CONFIG_IXGBE_DCB
+ netdev->dcbnl_ops = &dcbnl_ops;
+#endif
+
+#ifdef IXGBE_FCOE
+ if (adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) {
+ if (hw->mac.ops.get_device_caps) {
+ hw->mac.ops.get_device_caps(hw, &device_caps);
+ if (device_caps & IXGBE_DEVICE_CAPS_FCOE_OFFLOADS)
+ adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE;
+ }
+ }
+ if (adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) {
+ netdev->vlan_features |= NETIF_F_FCOE_CRC;
+ netdev->vlan_features |= NETIF_F_FSO;
+ netdev->vlan_features |= NETIF_F_FCOE_MTU;
+ }
+#endif /* IXGBE_FCOE */
+ if (pci_using_dac) {
+ netdev->features |= NETIF_F_HIGHDMA;
+ netdev->vlan_features |= NETIF_F_HIGHDMA;
+ }
+
+ if (adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE)
+ netdev->hw_features |= NETIF_F_LRO;
+ if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)
+ netdev->features |= NETIF_F_LRO;
+
+ /* make sure the EEPROM is good */
+ if (hw->eeprom.ops.validate_checksum(hw, NULL) < 0) {
+ e_dev_err("The EEPROM Checksum Is Not Valid\n");
+ err = -EIO;
+ goto err_eeprom;
+ }
+
+ memcpy(netdev->dev_addr, hw->mac.perm_addr, netdev->addr_len);
+ memcpy(netdev->perm_addr, hw->mac.perm_addr, netdev->addr_len);
+
+ if (ixgbe_validate_mac_addr(netdev->perm_addr)) {
+ e_dev_err("invalid MAC address\n");
+ err = -EIO;
+ goto err_eeprom;
+ }
+
+ /* power down the optics for multispeed fiber and 82599 SFP+ fiber */
+ if (hw->mac.ops.disable_tx_laser &&
+ ((hw->phy.multispeed_fiber) ||
+ ((hw->mac.ops.get_media_type(hw) == ixgbe_media_type_fiber) &&
+ (hw->mac.type == ixgbe_mac_82599EB))))
+ hw->mac.ops.disable_tx_laser(hw);
+
+ setup_timer(&adapter->service_timer, &ixgbe_service_timer,
+ (unsigned long) adapter);
+
+ INIT_WORK(&adapter->service_task, ixgbe_service_task);
+ clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state);
+
+ err = ixgbe_init_interrupt_scheme(adapter);
+ if (err)
+ goto err_sw_init;
+
+ if (!(adapter->flags & IXGBE_FLAG_RSS_ENABLED)) {
+ netdev->hw_features &= ~NETIF_F_RXHASH;
+ netdev->features &= ~NETIF_F_RXHASH;
+ }
+
+ switch (pdev->device) {
+ case IXGBE_DEV_ID_82599_SFP:
+ /* Only this subdevice supports WOL */
+ if (pdev->subsystem_device == IXGBE_SUBDEV_ID_82599_SFP)
+ adapter->wol = IXGBE_WUFC_MAG;
+ break;
+ case IXGBE_DEV_ID_82599_COMBO_BACKPLANE:
+ /* All except this subdevice support WOL */
+ if (pdev->subsystem_device != IXGBE_SUBDEV_ID_82599_KX4_KR_MEZZ)
+ adapter->wol = IXGBE_WUFC_MAG;
+ break;
+ case IXGBE_DEV_ID_82599_KX4:
+ adapter->wol = IXGBE_WUFC_MAG;
+ break;
+ default:
+ adapter->wol = 0;
+ break;
+ }
+ device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
+
+ /* pick up the PCI bus settings for reporting later */
+ hw->mac.ops.get_bus_info(hw);
+
+ /* print bus type/speed/width info */
+ e_dev_info("(PCI Express:%s:%s) %pM\n",
+ (hw->bus.speed == ixgbe_bus_speed_5000 ? "5.0GT/s" :
+ hw->bus.speed == ixgbe_bus_speed_2500 ? "2.5GT/s" :
+ "Unknown"),
+ (hw->bus.width == ixgbe_bus_width_pcie_x8 ? "Width x8" :
+ hw->bus.width == ixgbe_bus_width_pcie_x4 ? "Width x4" :
+ hw->bus.width == ixgbe_bus_width_pcie_x1 ? "Width x1" :
+ "Unknown"),
+ netdev->dev_addr);
+
+ err = ixgbe_read_pba_string_generic(hw, part_str, IXGBE_PBANUM_LENGTH);
+ if (err)
+ strncpy(part_str, "Unknown", IXGBE_PBANUM_LENGTH);
+ if (ixgbe_is_sfp(hw) && hw->phy.sfp_type != ixgbe_sfp_type_not_present)
+ e_dev_info("MAC: %d, PHY: %d, SFP+: %d, PBA No: %s\n",
+ hw->mac.type, hw->phy.type, hw->phy.sfp_type,
+ part_str);
+ else
+ e_dev_info("MAC: %d, PHY: %d, PBA No: %s\n",
+ hw->mac.type, hw->phy.type, part_str);
+
+ if (hw->bus.width <= ixgbe_bus_width_pcie_x4) {
+ e_dev_warn("PCI-Express bandwidth available for this card is "
+ "not sufficient for optimal performance.\n");
+ e_dev_warn("For optimal performance a x8 PCI-Express slot "
+ "is required.\n");
+ }
+
+ /* save off EEPROM version number */
+ hw->eeprom.ops.read(hw, 0x29, &adapter->eeprom_version);
+
+ /* reset the hardware with the new settings */
+ err = hw->mac.ops.start_hw(hw);
+
+ if (err == IXGBE_ERR_EEPROM_VERSION) {
+ /* We are running on a pre-production device, log a warning */
+ e_dev_warn("This device is a pre-production adapter/LOM. "
+ "Please be aware there may be issues associated "
+ "with your hardware. If you are experiencing "
+ "problems please contact your Intel or hardware "
+ "representative who provided you with this "
+ "hardware.\n");
+ }
+ strcpy(netdev->name, "eth%d");
+ err = register_netdev(netdev);
+ if (err)
+ goto err_register;
+
+ /* carrier off reporting is important to ethtool even BEFORE open */
+ netif_carrier_off(netdev);
+
+#ifdef CONFIG_IXGBE_DCA
+ if (dca_add_requester(&pdev->dev) == 0) {
+ adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
+ ixgbe_setup_dca(adapter);
+ }
+#endif
+ if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
+ e_info(probe, "IOV is enabled with %d VFs\n", adapter->num_vfs);
+ for (i = 0; i < adapter->num_vfs; i++)
+ ixgbe_vf_configuration(pdev, (i | 0x10000000));
+ }
+
+ /* Inform firmware of driver version */
+ if (hw->mac.ops.set_fw_drv_ver)
+ hw->mac.ops.set_fw_drv_ver(hw, MAJ, MIN, BUILD,
+ FW_CEM_UNUSED_VER);
+
+ /* add san mac addr to netdev */
+ ixgbe_add_sanmac_netdev(netdev);
+
+ e_dev_info("Intel(R) 10 Gigabit Network Connection\n");
+ cards_found++;
+ return 0;
+
+err_register:
+ ixgbe_release_hw_control(adapter);
+ ixgbe_clear_interrupt_scheme(adapter);
+err_sw_init:
+err_eeprom:
+ if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
+ ixgbe_disable_sriov(adapter);
+ adapter->flags2 &= ~IXGBE_FLAG2_SEARCH_FOR_SFP;
+ iounmap(hw->hw_addr);
+err_ioremap:
+ free_netdev(netdev);
+err_alloc_etherdev:
+ pci_release_selected_regions(pdev,
+ pci_select_bars(pdev, IORESOURCE_MEM));
+err_pci_reg:
+err_dma:
+ pci_disable_device(pdev);
+ return err;
+}
+
+/**
+ * ixgbe_remove - Device Removal Routine
+ * @pdev: PCI device information struct
+ *
+ * ixgbe_remove is called by the PCI subsystem to alert the driver
+ * that it should release a PCI device. The could be caused by a
+ * Hot-Plug event, or because the driver is going to be removed from
+ * memory.
+ **/
+static void __devexit ixgbe_remove(struct pci_dev *pdev)
+{
+ struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
+ struct net_device *netdev = adapter->netdev;
+
+ set_bit(__IXGBE_DOWN, &adapter->state);
+ cancel_work_sync(&adapter->service_task);
+
+#ifdef CONFIG_IXGBE_DCA
+ if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
+ adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED;
+ dca_remove_requester(&pdev->dev);
+ IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1);
+ }
+
+#endif
+#ifdef IXGBE_FCOE
+ if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
+ ixgbe_cleanup_fcoe(adapter);
+
+#endif /* IXGBE_FCOE */
+
+ /* remove the added san mac */
+ ixgbe_del_sanmac_netdev(netdev);
+
+ if (netdev->reg_state == NETREG_REGISTERED)
+ unregister_netdev(netdev);
+
+ if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
+ ixgbe_disable_sriov(adapter);
+
+ ixgbe_clear_interrupt_scheme(adapter);
+
+ ixgbe_release_hw_control(adapter);
+
+ iounmap(adapter->hw.hw_addr);
+ pci_release_selected_regions(pdev, pci_select_bars(pdev,
+ IORESOURCE_MEM));
+
+ e_dev_info("complete\n");
+
+ free_netdev(netdev);
+
+ pci_disable_pcie_error_reporting(pdev);
+
+ pci_disable_device(pdev);
+}
+
+/**
+ * ixgbe_io_error_detected - called when PCI error is detected
+ * @pdev: Pointer to PCI device
+ * @state: The current pci connection state
+ *
+ * This function is called after a PCI bus error affecting
+ * this device has been detected.
+ */
+static pci_ers_result_t ixgbe_io_error_detected(struct pci_dev *pdev,
+ pci_channel_state_t state)
+{
+ struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
+ struct net_device *netdev = adapter->netdev;
+
+ netif_device_detach(netdev);
+
+ if (state == pci_channel_io_perm_failure)
+ return PCI_ERS_RESULT_DISCONNECT;
+
+ if (netif_running(netdev))
+ ixgbe_down(adapter);
+ pci_disable_device(pdev);
+
+ /* Request a slot reset. */
+ return PCI_ERS_RESULT_NEED_RESET;
+}
+
+/**
+ * ixgbe_io_slot_reset - called after the pci bus has been reset.
+ * @pdev: Pointer to PCI device
+ *
+ * Restart the card from scratch, as if from a cold-boot.
+ */
+static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev)
+{
+ struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
+ pci_ers_result_t result;
+ int err;
+
+ if (pci_enable_device_mem(pdev)) {
+ e_err(probe, "Cannot re-enable PCI device after reset.\n");
+ result = PCI_ERS_RESULT_DISCONNECT;
+ } else {
+ pci_set_master(pdev);
+ pci_restore_state(pdev);
+ pci_save_state(pdev);
+
+ pci_wake_from_d3(pdev, false);
+
+ ixgbe_reset(adapter);
+ IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
+ result = PCI_ERS_RESULT_RECOVERED;
+ }
+
+ err = pci_cleanup_aer_uncorrect_error_status(pdev);
+ if (err) {
+ e_dev_err("pci_cleanup_aer_uncorrect_error_status "
+ "failed 0x%0x\n", err);
+ /* non-fatal, continue */
+ }
+
+ return result;
+}
+
+/**
+ * ixgbe_io_resume - called when traffic can start flowing again.
+ * @pdev: Pointer to PCI device
+ *
+ * This callback is called when the error recovery driver tells us that
+ * its OK to resume normal operation.
+ */
+static void ixgbe_io_resume(struct pci_dev *pdev)
+{
+ struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
+ struct net_device *netdev = adapter->netdev;
+
+ if (netif_running(netdev)) {
+ if (ixgbe_up(adapter)) {
+ e_info(probe, "ixgbe_up failed after reset\n");
+ return;
+ }
+ }
+
+ netif_device_attach(netdev);
+}
+
+static struct pci_error_handlers ixgbe_err_handler = {
+ .error_detected = ixgbe_io_error_detected,
+ .slot_reset = ixgbe_io_slot_reset,
+ .resume = ixgbe_io_resume,
+};
+
+static struct pci_driver ixgbe_driver = {
+ .name = ixgbe_driver_name,
+ .id_table = ixgbe_pci_tbl,
+ .probe = ixgbe_probe,
+ .remove = __devexit_p(ixgbe_remove),
+#ifdef CONFIG_PM
+ .suspend = ixgbe_suspend,
+ .resume = ixgbe_resume,
+#endif
+ .shutdown = ixgbe_shutdown,
+ .err_handler = &ixgbe_err_handler
+};
+
+/**
+ * ixgbe_init_module - Driver Registration Routine
+ *
+ * ixgbe_init_module is the first routine called when the driver is
+ * loaded. All it does is register with the PCI subsystem.
+ **/
+static int __init ixgbe_init_module(void)
+{
+ int ret;
+ pr_info("%s - version %s\n", ixgbe_driver_string, ixgbe_driver_version);
+ pr_info("%s\n", ixgbe_copyright);
+
+#ifdef CONFIG_IXGBE_DCA
+ dca_register_notify(&dca_notifier);
+#endif
+
+ ret = pci_register_driver(&ixgbe_driver);
+ return ret;
+}
+
+module_init(ixgbe_init_module);
+
+/**
+ * ixgbe_exit_module - Driver Exit Cleanup Routine
+ *
+ * ixgbe_exit_module is called just before the driver is removed
+ * from memory.
+ **/
+static void __exit ixgbe_exit_module(void)
+{
+#ifdef CONFIG_IXGBE_DCA
+ dca_unregister_notify(&dca_notifier);
+#endif
+ pci_unregister_driver(&ixgbe_driver);
+ rcu_barrier(); /* Wait for completion of call_rcu()'s */
+}
+
+#ifdef CONFIG_IXGBE_DCA
+static int ixgbe_notify_dca(struct notifier_block *nb, unsigned long event,
+ void *p)
+{
+ int ret_val;
+
+ ret_val = driver_for_each_device(&ixgbe_driver.driver, NULL, &event,
+ __ixgbe_notify_dca);
+
+ return ret_val ? NOTIFY_BAD : NOTIFY_DONE;
+}
+
+#endif /* CONFIG_IXGBE_DCA */
+
+module_exit(ixgbe_exit_module);
+
+/* ixgbe_main.c */
--- /dev/null
- nv_vlan_mode(dev, dev->features);
+/*
+ * forcedeth: Ethernet driver for NVIDIA nForce media access controllers.
+ *
+ * Note: This driver is a cleanroom reimplementation based on reverse
+ * engineered documentation written by Carl-Daniel Hailfinger
+ * and Andrew de Quincey.
+ *
+ * NVIDIA, nForce and other NVIDIA marks are trademarks or registered
+ * trademarks of NVIDIA Corporation in the United States and other
+ * countries.
+ *
+ * Copyright (C) 2003,4,5 Manfred Spraul
+ * Copyright (C) 2004 Andrew de Quincey (wol support)
+ * Copyright (C) 2004 Carl-Daniel Hailfinger (invalid MAC handling, insane
+ * IRQ rate fixes, bigendian fixes, cleanups, verification)
+ * Copyright (c) 2004,2005,2006,2007,2008,2009 NVIDIA Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Known bugs:
+ * We suspect that on some hardware no TX done interrupts are generated.
+ * This means recovery from netif_stop_queue only happens if the hw timer
+ * interrupt fires (100 times/second, configurable with NVREG_POLL_DEFAULT)
+ * and the timer is active in the IRQMask, or if a rx packet arrives by chance.
+ * If your hardware reliably generates tx done interrupts, then you can remove
+ * DEV_NEED_TIMERIRQ from the driver_data flags.
+ * DEV_NEED_TIMERIRQ will not harm you on sane hardware, only generating a few
+ * superfluous timer interrupts from the nic.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#define FORCEDETH_VERSION "0.64"
+#define DRV_NAME "forcedeth"
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/interrupt.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/spinlock.h>
+#include <linux/ethtool.h>
+#include <linux/timer.h>
+#include <linux/skbuff.h>
+#include <linux/mii.h>
+#include <linux/random.h>
+#include <linux/init.h>
+#include <linux/if_vlan.h>
+#include <linux/dma-mapping.h>
+#include <linux/slab.h>
+#include <linux/uaccess.h>
+#include <linux/prefetch.h>
+#include <linux/io.h>
+
+#include <asm/irq.h>
+#include <asm/system.h>
+
+#define TX_WORK_PER_LOOP 64
+#define RX_WORK_PER_LOOP 64
+
+/*
+ * Hardware access:
+ */
+
+#define DEV_NEED_TIMERIRQ 0x0000001 /* set the timer irq flag in the irq mask */
+#define DEV_NEED_LINKTIMER 0x0000002 /* poll link settings. Relies on the timer irq */
+#define DEV_HAS_LARGEDESC 0x0000004 /* device supports jumbo frames and needs packet format 2 */
+#define DEV_HAS_HIGH_DMA 0x0000008 /* device supports 64bit dma */
+#define DEV_HAS_CHECKSUM 0x0000010 /* device supports tx and rx checksum offloads */
+#define DEV_HAS_VLAN 0x0000020 /* device supports vlan tagging and striping */
+#define DEV_HAS_MSI 0x0000040 /* device supports MSI */
+#define DEV_HAS_MSI_X 0x0000080 /* device supports MSI-X */
+#define DEV_HAS_POWER_CNTRL 0x0000100 /* device supports power savings */
+#define DEV_HAS_STATISTICS_V1 0x0000200 /* device supports hw statistics version 1 */
+#define DEV_HAS_STATISTICS_V2 0x0000400 /* device supports hw statistics version 2 */
+#define DEV_HAS_STATISTICS_V3 0x0000800 /* device supports hw statistics version 3 */
+#define DEV_HAS_STATISTICS_V12 0x0000600 /* device supports hw statistics version 1 and 2 */
+#define DEV_HAS_STATISTICS_V123 0x0000e00 /* device supports hw statistics version 1, 2, and 3 */
+#define DEV_HAS_TEST_EXTENDED 0x0001000 /* device supports extended diagnostic test */
+#define DEV_HAS_MGMT_UNIT 0x0002000 /* device supports management unit */
+#define DEV_HAS_CORRECT_MACADDR 0x0004000 /* device supports correct mac address order */
+#define DEV_HAS_COLLISION_FIX 0x0008000 /* device supports tx collision fix */
+#define DEV_HAS_PAUSEFRAME_TX_V1 0x0010000 /* device supports tx pause frames version 1 */
+#define DEV_HAS_PAUSEFRAME_TX_V2 0x0020000 /* device supports tx pause frames version 2 */
+#define DEV_HAS_PAUSEFRAME_TX_V3 0x0040000 /* device supports tx pause frames version 3 */
+#define DEV_NEED_TX_LIMIT 0x0080000 /* device needs to limit tx */
+#define DEV_NEED_TX_LIMIT2 0x0180000 /* device needs to limit tx, expect for some revs */
+#define DEV_HAS_GEAR_MODE 0x0200000 /* device supports gear mode */
+#define DEV_NEED_PHY_INIT_FIX 0x0400000 /* device needs specific phy workaround */
+#define DEV_NEED_LOW_POWER_FIX 0x0800000 /* device needs special power up workaround */
+#define DEV_NEED_MSI_FIX 0x1000000 /* device needs msi workaround */
+
+enum {
+ NvRegIrqStatus = 0x000,
+#define NVREG_IRQSTAT_MIIEVENT 0x040
+#define NVREG_IRQSTAT_MASK 0x83ff
+ NvRegIrqMask = 0x004,
+#define NVREG_IRQ_RX_ERROR 0x0001
+#define NVREG_IRQ_RX 0x0002
+#define NVREG_IRQ_RX_NOBUF 0x0004
+#define NVREG_IRQ_TX_ERR 0x0008
+#define NVREG_IRQ_TX_OK 0x0010
+#define NVREG_IRQ_TIMER 0x0020
+#define NVREG_IRQ_LINK 0x0040
+#define NVREG_IRQ_RX_FORCED 0x0080
+#define NVREG_IRQ_TX_FORCED 0x0100
+#define NVREG_IRQ_RECOVER_ERROR 0x8200
+#define NVREG_IRQMASK_THROUGHPUT 0x00df
+#define NVREG_IRQMASK_CPU 0x0060
+#define NVREG_IRQ_TX_ALL (NVREG_IRQ_TX_ERR|NVREG_IRQ_TX_OK|NVREG_IRQ_TX_FORCED)
+#define NVREG_IRQ_RX_ALL (NVREG_IRQ_RX_ERROR|NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF|NVREG_IRQ_RX_FORCED)
+#define NVREG_IRQ_OTHER (NVREG_IRQ_TIMER|NVREG_IRQ_LINK|NVREG_IRQ_RECOVER_ERROR)
+
+ NvRegUnknownSetupReg6 = 0x008,
+#define NVREG_UNKSETUP6_VAL 3
+
+/*
+ * NVREG_POLL_DEFAULT is the interval length of the timer source on the nic
+ * NVREG_POLL_DEFAULT=97 would result in an interval length of 1 ms
+ */
+ NvRegPollingInterval = 0x00c,
+#define NVREG_POLL_DEFAULT_THROUGHPUT 65535 /* backup tx cleanup if loop max reached */
+#define NVREG_POLL_DEFAULT_CPU 13
+ NvRegMSIMap0 = 0x020,
+ NvRegMSIMap1 = 0x024,
+ NvRegMSIIrqMask = 0x030,
+#define NVREG_MSI_VECTOR_0_ENABLED 0x01
+ NvRegMisc1 = 0x080,
+#define NVREG_MISC1_PAUSE_TX 0x01
+#define NVREG_MISC1_HD 0x02
+#define NVREG_MISC1_FORCE 0x3b0f3c
+
+ NvRegMacReset = 0x34,
+#define NVREG_MAC_RESET_ASSERT 0x0F3
+ NvRegTransmitterControl = 0x084,
+#define NVREG_XMITCTL_START 0x01
+#define NVREG_XMITCTL_MGMT_ST 0x40000000
+#define NVREG_XMITCTL_SYNC_MASK 0x000f0000
+#define NVREG_XMITCTL_SYNC_NOT_READY 0x0
+#define NVREG_XMITCTL_SYNC_PHY_INIT 0x00040000
+#define NVREG_XMITCTL_MGMT_SEMA_MASK 0x00000f00
+#define NVREG_XMITCTL_MGMT_SEMA_FREE 0x0
+#define NVREG_XMITCTL_HOST_SEMA_MASK 0x0000f000
+#define NVREG_XMITCTL_HOST_SEMA_ACQ 0x0000f000
+#define NVREG_XMITCTL_HOST_LOADED 0x00004000
+#define NVREG_XMITCTL_TX_PATH_EN 0x01000000
+#define NVREG_XMITCTL_DATA_START 0x00100000
+#define NVREG_XMITCTL_DATA_READY 0x00010000
+#define NVREG_XMITCTL_DATA_ERROR 0x00020000
+ NvRegTransmitterStatus = 0x088,
+#define NVREG_XMITSTAT_BUSY 0x01
+
+ NvRegPacketFilterFlags = 0x8c,
+#define NVREG_PFF_PAUSE_RX 0x08
+#define NVREG_PFF_ALWAYS 0x7F0000
+#define NVREG_PFF_PROMISC 0x80
+#define NVREG_PFF_MYADDR 0x20
+#define NVREG_PFF_LOOPBACK 0x10
+
+ NvRegOffloadConfig = 0x90,
+#define NVREG_OFFLOAD_HOMEPHY 0x601
+#define NVREG_OFFLOAD_NORMAL RX_NIC_BUFSIZE
+ NvRegReceiverControl = 0x094,
+#define NVREG_RCVCTL_START 0x01
+#define NVREG_RCVCTL_RX_PATH_EN 0x01000000
+ NvRegReceiverStatus = 0x98,
+#define NVREG_RCVSTAT_BUSY 0x01
+
+ NvRegSlotTime = 0x9c,
+#define NVREG_SLOTTIME_LEGBF_ENABLED 0x80000000
+#define NVREG_SLOTTIME_10_100_FULL 0x00007f00
+#define NVREG_SLOTTIME_1000_FULL 0x0003ff00
+#define NVREG_SLOTTIME_HALF 0x0000ff00
+#define NVREG_SLOTTIME_DEFAULT 0x00007f00
+#define NVREG_SLOTTIME_MASK 0x000000ff
+
+ NvRegTxDeferral = 0xA0,
+#define NVREG_TX_DEFERRAL_DEFAULT 0x15050f
+#define NVREG_TX_DEFERRAL_RGMII_10_100 0x16070f
+#define NVREG_TX_DEFERRAL_RGMII_1000 0x14050f
+#define NVREG_TX_DEFERRAL_RGMII_STRETCH_10 0x16190f
+#define NVREG_TX_DEFERRAL_RGMII_STRETCH_100 0x16300f
+#define NVREG_TX_DEFERRAL_MII_STRETCH 0x152000
+ NvRegRxDeferral = 0xA4,
+#define NVREG_RX_DEFERRAL_DEFAULT 0x16
+ NvRegMacAddrA = 0xA8,
+ NvRegMacAddrB = 0xAC,
+ NvRegMulticastAddrA = 0xB0,
+#define NVREG_MCASTADDRA_FORCE 0x01
+ NvRegMulticastAddrB = 0xB4,
+ NvRegMulticastMaskA = 0xB8,
+#define NVREG_MCASTMASKA_NONE 0xffffffff
+ NvRegMulticastMaskB = 0xBC,
+#define NVREG_MCASTMASKB_NONE 0xffff
+
+ NvRegPhyInterface = 0xC0,
+#define PHY_RGMII 0x10000000
+ NvRegBackOffControl = 0xC4,
+#define NVREG_BKOFFCTRL_DEFAULT 0x70000000
+#define NVREG_BKOFFCTRL_SEED_MASK 0x000003ff
+#define NVREG_BKOFFCTRL_SELECT 24
+#define NVREG_BKOFFCTRL_GEAR 12
+
+ NvRegTxRingPhysAddr = 0x100,
+ NvRegRxRingPhysAddr = 0x104,
+ NvRegRingSizes = 0x108,
+#define NVREG_RINGSZ_TXSHIFT 0
+#define NVREG_RINGSZ_RXSHIFT 16
+ NvRegTransmitPoll = 0x10c,
+#define NVREG_TRANSMITPOLL_MAC_ADDR_REV 0x00008000
+ NvRegLinkSpeed = 0x110,
+#define NVREG_LINKSPEED_FORCE 0x10000
+#define NVREG_LINKSPEED_10 1000
+#define NVREG_LINKSPEED_100 100
+#define NVREG_LINKSPEED_1000 50
+#define NVREG_LINKSPEED_MASK (0xFFF)
+ NvRegUnknownSetupReg5 = 0x130,
+#define NVREG_UNKSETUP5_BIT31 (1<<31)
+ NvRegTxWatermark = 0x13c,
+#define NVREG_TX_WM_DESC1_DEFAULT 0x0200010
+#define NVREG_TX_WM_DESC2_3_DEFAULT 0x1e08000
+#define NVREG_TX_WM_DESC2_3_1000 0xfe08000
+ NvRegTxRxControl = 0x144,
+#define NVREG_TXRXCTL_KICK 0x0001
+#define NVREG_TXRXCTL_BIT1 0x0002
+#define NVREG_TXRXCTL_BIT2 0x0004
+#define NVREG_TXRXCTL_IDLE 0x0008
+#define NVREG_TXRXCTL_RESET 0x0010
+#define NVREG_TXRXCTL_RXCHECK 0x0400
+#define NVREG_TXRXCTL_DESC_1 0
+#define NVREG_TXRXCTL_DESC_2 0x002100
+#define NVREG_TXRXCTL_DESC_3 0xc02200
+#define NVREG_TXRXCTL_VLANSTRIP 0x00040
+#define NVREG_TXRXCTL_VLANINS 0x00080
+ NvRegTxRingPhysAddrHigh = 0x148,
+ NvRegRxRingPhysAddrHigh = 0x14C,
+ NvRegTxPauseFrame = 0x170,
+#define NVREG_TX_PAUSEFRAME_DISABLE 0x0fff0080
+#define NVREG_TX_PAUSEFRAME_ENABLE_V1 0x01800010
+#define NVREG_TX_PAUSEFRAME_ENABLE_V2 0x056003f0
+#define NVREG_TX_PAUSEFRAME_ENABLE_V3 0x09f00880
+ NvRegTxPauseFrameLimit = 0x174,
+#define NVREG_TX_PAUSEFRAMELIMIT_ENABLE 0x00010000
+ NvRegMIIStatus = 0x180,
+#define NVREG_MIISTAT_ERROR 0x0001
+#define NVREG_MIISTAT_LINKCHANGE 0x0008
+#define NVREG_MIISTAT_MASK_RW 0x0007
+#define NVREG_MIISTAT_MASK_ALL 0x000f
+ NvRegMIIMask = 0x184,
+#define NVREG_MII_LINKCHANGE 0x0008
+
+ NvRegAdapterControl = 0x188,
+#define NVREG_ADAPTCTL_START 0x02
+#define NVREG_ADAPTCTL_LINKUP 0x04
+#define NVREG_ADAPTCTL_PHYVALID 0x40000
+#define NVREG_ADAPTCTL_RUNNING 0x100000
+#define NVREG_ADAPTCTL_PHYSHIFT 24
+ NvRegMIISpeed = 0x18c,
+#define NVREG_MIISPEED_BIT8 (1<<8)
+#define NVREG_MIIDELAY 5
+ NvRegMIIControl = 0x190,
+#define NVREG_MIICTL_INUSE 0x08000
+#define NVREG_MIICTL_WRITE 0x00400
+#define NVREG_MIICTL_ADDRSHIFT 5
+ NvRegMIIData = 0x194,
+ NvRegTxUnicast = 0x1a0,
+ NvRegTxMulticast = 0x1a4,
+ NvRegTxBroadcast = 0x1a8,
+ NvRegWakeUpFlags = 0x200,
+#define NVREG_WAKEUPFLAGS_VAL 0x7770
+#define NVREG_WAKEUPFLAGS_BUSYSHIFT 24
+#define NVREG_WAKEUPFLAGS_ENABLESHIFT 16
+#define NVREG_WAKEUPFLAGS_D3SHIFT 12
+#define NVREG_WAKEUPFLAGS_D2SHIFT 8
+#define NVREG_WAKEUPFLAGS_D1SHIFT 4
+#define NVREG_WAKEUPFLAGS_D0SHIFT 0
+#define NVREG_WAKEUPFLAGS_ACCEPT_MAGPAT 0x01
+#define NVREG_WAKEUPFLAGS_ACCEPT_WAKEUPPAT 0x02
+#define NVREG_WAKEUPFLAGS_ACCEPT_LINKCHANGE 0x04
+#define NVREG_WAKEUPFLAGS_ENABLE 0x1111
+
+ NvRegMgmtUnitGetVersion = 0x204,
+#define NVREG_MGMTUNITGETVERSION 0x01
+ NvRegMgmtUnitVersion = 0x208,
+#define NVREG_MGMTUNITVERSION 0x08
+ NvRegPowerCap = 0x268,
+#define NVREG_POWERCAP_D3SUPP (1<<30)
+#define NVREG_POWERCAP_D2SUPP (1<<26)
+#define NVREG_POWERCAP_D1SUPP (1<<25)
+ NvRegPowerState = 0x26c,
+#define NVREG_POWERSTATE_POWEREDUP 0x8000
+#define NVREG_POWERSTATE_VALID 0x0100
+#define NVREG_POWERSTATE_MASK 0x0003
+#define NVREG_POWERSTATE_D0 0x0000
+#define NVREG_POWERSTATE_D1 0x0001
+#define NVREG_POWERSTATE_D2 0x0002
+#define NVREG_POWERSTATE_D3 0x0003
+ NvRegMgmtUnitControl = 0x278,
+#define NVREG_MGMTUNITCONTROL_INUSE 0x20000
+ NvRegTxCnt = 0x280,
+ NvRegTxZeroReXmt = 0x284,
+ NvRegTxOneReXmt = 0x288,
+ NvRegTxManyReXmt = 0x28c,
+ NvRegTxLateCol = 0x290,
+ NvRegTxUnderflow = 0x294,
+ NvRegTxLossCarrier = 0x298,
+ NvRegTxExcessDef = 0x29c,
+ NvRegTxRetryErr = 0x2a0,
+ NvRegRxFrameErr = 0x2a4,
+ NvRegRxExtraByte = 0x2a8,
+ NvRegRxLateCol = 0x2ac,
+ NvRegRxRunt = 0x2b0,
+ NvRegRxFrameTooLong = 0x2b4,
+ NvRegRxOverflow = 0x2b8,
+ NvRegRxFCSErr = 0x2bc,
+ NvRegRxFrameAlignErr = 0x2c0,
+ NvRegRxLenErr = 0x2c4,
+ NvRegRxUnicast = 0x2c8,
+ NvRegRxMulticast = 0x2cc,
+ NvRegRxBroadcast = 0x2d0,
+ NvRegTxDef = 0x2d4,
+ NvRegTxFrame = 0x2d8,
+ NvRegRxCnt = 0x2dc,
+ NvRegTxPause = 0x2e0,
+ NvRegRxPause = 0x2e4,
+ NvRegRxDropFrame = 0x2e8,
+ NvRegVlanControl = 0x300,
+#define NVREG_VLANCONTROL_ENABLE 0x2000
+ NvRegMSIXMap0 = 0x3e0,
+ NvRegMSIXMap1 = 0x3e4,
+ NvRegMSIXIrqStatus = 0x3f0,
+
+ NvRegPowerState2 = 0x600,
+#define NVREG_POWERSTATE2_POWERUP_MASK 0x0F15
+#define NVREG_POWERSTATE2_POWERUP_REV_A3 0x0001
+#define NVREG_POWERSTATE2_PHY_RESET 0x0004
+#define NVREG_POWERSTATE2_GATE_CLOCKS 0x0F00
+};
+
+/* Big endian: should work, but is untested */
+struct ring_desc {
+ __le32 buf;
+ __le32 flaglen;
+};
+
+struct ring_desc_ex {
+ __le32 bufhigh;
+ __le32 buflow;
+ __le32 txvlan;
+ __le32 flaglen;
+};
+
+union ring_type {
+ struct ring_desc *orig;
+ struct ring_desc_ex *ex;
+};
+
+#define FLAG_MASK_V1 0xffff0000
+#define FLAG_MASK_V2 0xffffc000
+#define LEN_MASK_V1 (0xffffffff ^ FLAG_MASK_V1)
+#define LEN_MASK_V2 (0xffffffff ^ FLAG_MASK_V2)
+
+#define NV_TX_LASTPACKET (1<<16)
+#define NV_TX_RETRYERROR (1<<19)
+#define NV_TX_RETRYCOUNT_MASK (0xF<<20)
+#define NV_TX_FORCED_INTERRUPT (1<<24)
+#define NV_TX_DEFERRED (1<<26)
+#define NV_TX_CARRIERLOST (1<<27)
+#define NV_TX_LATECOLLISION (1<<28)
+#define NV_TX_UNDERFLOW (1<<29)
+#define NV_TX_ERROR (1<<30)
+#define NV_TX_VALID (1<<31)
+
+#define NV_TX2_LASTPACKET (1<<29)
+#define NV_TX2_RETRYERROR (1<<18)
+#define NV_TX2_RETRYCOUNT_MASK (0xF<<19)
+#define NV_TX2_FORCED_INTERRUPT (1<<30)
+#define NV_TX2_DEFERRED (1<<25)
+#define NV_TX2_CARRIERLOST (1<<26)
+#define NV_TX2_LATECOLLISION (1<<27)
+#define NV_TX2_UNDERFLOW (1<<28)
+/* error and valid are the same for both */
+#define NV_TX2_ERROR (1<<30)
+#define NV_TX2_VALID (1<<31)
+#define NV_TX2_TSO (1<<28)
+#define NV_TX2_TSO_SHIFT 14
+#define NV_TX2_TSO_MAX_SHIFT 14
+#define NV_TX2_TSO_MAX_SIZE (1<<NV_TX2_TSO_MAX_SHIFT)
+#define NV_TX2_CHECKSUM_L3 (1<<27)
+#define NV_TX2_CHECKSUM_L4 (1<<26)
+
+#define NV_TX3_VLAN_TAG_PRESENT (1<<18)
+
+#define NV_RX_DESCRIPTORVALID (1<<16)
+#define NV_RX_MISSEDFRAME (1<<17)
+#define NV_RX_SUBSTRACT1 (1<<18)
+#define NV_RX_ERROR1 (1<<23)
+#define NV_RX_ERROR2 (1<<24)
+#define NV_RX_ERROR3 (1<<25)
+#define NV_RX_ERROR4 (1<<26)
+#define NV_RX_CRCERR (1<<27)
+#define NV_RX_OVERFLOW (1<<28)
+#define NV_RX_FRAMINGERR (1<<29)
+#define NV_RX_ERROR (1<<30)
+#define NV_RX_AVAIL (1<<31)
+#define NV_RX_ERROR_MASK (NV_RX_ERROR1|NV_RX_ERROR2|NV_RX_ERROR3|NV_RX_ERROR4|NV_RX_CRCERR|NV_RX_OVERFLOW|NV_RX_FRAMINGERR)
+
+#define NV_RX2_CHECKSUMMASK (0x1C000000)
+#define NV_RX2_CHECKSUM_IP (0x10000000)
+#define NV_RX2_CHECKSUM_IP_TCP (0x14000000)
+#define NV_RX2_CHECKSUM_IP_UDP (0x18000000)
+#define NV_RX2_DESCRIPTORVALID (1<<29)
+#define NV_RX2_SUBSTRACT1 (1<<25)
+#define NV_RX2_ERROR1 (1<<18)
+#define NV_RX2_ERROR2 (1<<19)
+#define NV_RX2_ERROR3 (1<<20)
+#define NV_RX2_ERROR4 (1<<21)
+#define NV_RX2_CRCERR (1<<22)
+#define NV_RX2_OVERFLOW (1<<23)
+#define NV_RX2_FRAMINGERR (1<<24)
+/* error and avail are the same for both */
+#define NV_RX2_ERROR (1<<30)
+#define NV_RX2_AVAIL (1<<31)
+#define NV_RX2_ERROR_MASK (NV_RX2_ERROR1|NV_RX2_ERROR2|NV_RX2_ERROR3|NV_RX2_ERROR4|NV_RX2_CRCERR|NV_RX2_OVERFLOW|NV_RX2_FRAMINGERR)
+
+#define NV_RX3_VLAN_TAG_PRESENT (1<<16)
+#define NV_RX3_VLAN_TAG_MASK (0x0000FFFF)
+
+/* Miscellaneous hardware related defines: */
+#define NV_PCI_REGSZ_VER1 0x270
+#define NV_PCI_REGSZ_VER2 0x2d4
+#define NV_PCI_REGSZ_VER3 0x604
+#define NV_PCI_REGSZ_MAX 0x604
+
+/* various timeout delays: all in usec */
+#define NV_TXRX_RESET_DELAY 4
+#define NV_TXSTOP_DELAY1 10
+#define NV_TXSTOP_DELAY1MAX 500000
+#define NV_TXSTOP_DELAY2 100
+#define NV_RXSTOP_DELAY1 10
+#define NV_RXSTOP_DELAY1MAX 500000
+#define NV_RXSTOP_DELAY2 100
+#define NV_SETUP5_DELAY 5
+#define NV_SETUP5_DELAYMAX 50000
+#define NV_POWERUP_DELAY 5
+#define NV_POWERUP_DELAYMAX 5000
+#define NV_MIIBUSY_DELAY 50
+#define NV_MIIPHY_DELAY 10
+#define NV_MIIPHY_DELAYMAX 10000
+#define NV_MAC_RESET_DELAY 64
+
+#define NV_WAKEUPPATTERNS 5
+#define NV_WAKEUPMASKENTRIES 4
+
+/* General driver defaults */
+#define NV_WATCHDOG_TIMEO (5*HZ)
+
+#define RX_RING_DEFAULT 512
+#define TX_RING_DEFAULT 256
+#define RX_RING_MIN 128
+#define TX_RING_MIN 64
+#define RING_MAX_DESC_VER_1 1024
+#define RING_MAX_DESC_VER_2_3 16384
+
+/* rx/tx mac addr + type + vlan + align + slack*/
+#define NV_RX_HEADERS (64)
+/* even more slack. */
+#define NV_RX_ALLOC_PAD (64)
+
+/* maximum mtu size */
+#define NV_PKTLIMIT_1 ETH_DATA_LEN /* hard limit not known */
+#define NV_PKTLIMIT_2 9100 /* Actual limit according to NVidia: 9202 */
+
+#define OOM_REFILL (1+HZ/20)
+#define POLL_WAIT (1+HZ/100)
+#define LINK_TIMEOUT (3*HZ)
+#define STATS_INTERVAL (10*HZ)
+
+/*
+ * desc_ver values:
+ * The nic supports three different descriptor types:
+ * - DESC_VER_1: Original
+ * - DESC_VER_2: support for jumbo frames.
+ * - DESC_VER_3: 64-bit format.
+ */
+#define DESC_VER_1 1
+#define DESC_VER_2 2
+#define DESC_VER_3 3
+
+/* PHY defines */
+#define PHY_OUI_MARVELL 0x5043
+#define PHY_OUI_CICADA 0x03f1
+#define PHY_OUI_VITESSE 0x01c1
+#define PHY_OUI_REALTEK 0x0732
+#define PHY_OUI_REALTEK2 0x0020
+#define PHYID1_OUI_MASK 0x03ff
+#define PHYID1_OUI_SHFT 6
+#define PHYID2_OUI_MASK 0xfc00
+#define PHYID2_OUI_SHFT 10
+#define PHYID2_MODEL_MASK 0x03f0
+#define PHY_MODEL_REALTEK_8211 0x0110
+#define PHY_REV_MASK 0x0001
+#define PHY_REV_REALTEK_8211B 0x0000
+#define PHY_REV_REALTEK_8211C 0x0001
+#define PHY_MODEL_REALTEK_8201 0x0200
+#define PHY_MODEL_MARVELL_E3016 0x0220
+#define PHY_MARVELL_E3016_INITMASK 0x0300
+#define PHY_CICADA_INIT1 0x0f000
+#define PHY_CICADA_INIT2 0x0e00
+#define PHY_CICADA_INIT3 0x01000
+#define PHY_CICADA_INIT4 0x0200
+#define PHY_CICADA_INIT5 0x0004
+#define PHY_CICADA_INIT6 0x02000
+#define PHY_VITESSE_INIT_REG1 0x1f
+#define PHY_VITESSE_INIT_REG2 0x10
+#define PHY_VITESSE_INIT_REG3 0x11
+#define PHY_VITESSE_INIT_REG4 0x12
+#define PHY_VITESSE_INIT_MSK1 0xc
+#define PHY_VITESSE_INIT_MSK2 0x0180
+#define PHY_VITESSE_INIT1 0x52b5
+#define PHY_VITESSE_INIT2 0xaf8a
+#define PHY_VITESSE_INIT3 0x8
+#define PHY_VITESSE_INIT4 0x8f8a
+#define PHY_VITESSE_INIT5 0xaf86
+#define PHY_VITESSE_INIT6 0x8f86
+#define PHY_VITESSE_INIT7 0xaf82
+#define PHY_VITESSE_INIT8 0x0100
+#define PHY_VITESSE_INIT9 0x8f82
+#define PHY_VITESSE_INIT10 0x0
+#define PHY_REALTEK_INIT_REG1 0x1f
+#define PHY_REALTEK_INIT_REG2 0x19
+#define PHY_REALTEK_INIT_REG3 0x13
+#define PHY_REALTEK_INIT_REG4 0x14
+#define PHY_REALTEK_INIT_REG5 0x18
+#define PHY_REALTEK_INIT_REG6 0x11
+#define PHY_REALTEK_INIT_REG7 0x01
+#define PHY_REALTEK_INIT1 0x0000
+#define PHY_REALTEK_INIT2 0x8e00
+#define PHY_REALTEK_INIT3 0x0001
+#define PHY_REALTEK_INIT4 0xad17
+#define PHY_REALTEK_INIT5 0xfb54
+#define PHY_REALTEK_INIT6 0xf5c7
+#define PHY_REALTEK_INIT7 0x1000
+#define PHY_REALTEK_INIT8 0x0003
+#define PHY_REALTEK_INIT9 0x0008
+#define PHY_REALTEK_INIT10 0x0005
+#define PHY_REALTEK_INIT11 0x0200
+#define PHY_REALTEK_INIT_MSK1 0x0003
+
+#define PHY_GIGABIT 0x0100
+
+#define PHY_TIMEOUT 0x1
+#define PHY_ERROR 0x2
+
+#define PHY_100 0x1
+#define PHY_1000 0x2
+#define PHY_HALF 0x100
+
+#define NV_PAUSEFRAME_RX_CAPABLE 0x0001
+#define NV_PAUSEFRAME_TX_CAPABLE 0x0002
+#define NV_PAUSEFRAME_RX_ENABLE 0x0004
+#define NV_PAUSEFRAME_TX_ENABLE 0x0008
+#define NV_PAUSEFRAME_RX_REQ 0x0010
+#define NV_PAUSEFRAME_TX_REQ 0x0020
+#define NV_PAUSEFRAME_AUTONEG 0x0040
+
+/* MSI/MSI-X defines */
+#define NV_MSI_X_MAX_VECTORS 8
+#define NV_MSI_X_VECTORS_MASK 0x000f
+#define NV_MSI_CAPABLE 0x0010
+#define NV_MSI_X_CAPABLE 0x0020
+#define NV_MSI_ENABLED 0x0040
+#define NV_MSI_X_ENABLED 0x0080
+
+#define NV_MSI_X_VECTOR_ALL 0x0
+#define NV_MSI_X_VECTOR_RX 0x0
+#define NV_MSI_X_VECTOR_TX 0x1
+#define NV_MSI_X_VECTOR_OTHER 0x2
+
+#define NV_MSI_PRIV_OFFSET 0x68
+#define NV_MSI_PRIV_VALUE 0xffffffff
+
+#define NV_RESTART_TX 0x1
+#define NV_RESTART_RX 0x2
+
+#define NV_TX_LIMIT_COUNT 16
+
+#define NV_DYNAMIC_THRESHOLD 4
+#define NV_DYNAMIC_MAX_QUIET_COUNT 2048
+
+/* statistics */
+struct nv_ethtool_str {
+ char name[ETH_GSTRING_LEN];
+};
+
+static const struct nv_ethtool_str nv_estats_str[] = {
+ { "tx_bytes" },
+ { "tx_zero_rexmt" },
+ { "tx_one_rexmt" },
+ { "tx_many_rexmt" },
+ { "tx_late_collision" },
+ { "tx_fifo_errors" },
+ { "tx_carrier_errors" },
+ { "tx_excess_deferral" },
+ { "tx_retry_error" },
+ { "rx_frame_error" },
+ { "rx_extra_byte" },
+ { "rx_late_collision" },
+ { "rx_runt" },
+ { "rx_frame_too_long" },
+ { "rx_over_errors" },
+ { "rx_crc_errors" },
+ { "rx_frame_align_error" },
+ { "rx_length_error" },
+ { "rx_unicast" },
+ { "rx_multicast" },
+ { "rx_broadcast" },
+ { "rx_packets" },
+ { "rx_errors_total" },
+ { "tx_errors_total" },
+
+ /* version 2 stats */
+ { "tx_deferral" },
+ { "tx_packets" },
+ { "rx_bytes" },
+ { "tx_pause" },
+ { "rx_pause" },
+ { "rx_drop_frame" },
+
+ /* version 3 stats */
+ { "tx_unicast" },
+ { "tx_multicast" },
+ { "tx_broadcast" }
+};
+
+struct nv_ethtool_stats {
+ u64 tx_bytes;
+ u64 tx_zero_rexmt;
+ u64 tx_one_rexmt;
+ u64 tx_many_rexmt;
+ u64 tx_late_collision;
+ u64 tx_fifo_errors;
+ u64 tx_carrier_errors;
+ u64 tx_excess_deferral;
+ u64 tx_retry_error;
+ u64 rx_frame_error;
+ u64 rx_extra_byte;
+ u64 rx_late_collision;
+ u64 rx_runt;
+ u64 rx_frame_too_long;
+ u64 rx_over_errors;
+ u64 rx_crc_errors;
+ u64 rx_frame_align_error;
+ u64 rx_length_error;
+ u64 rx_unicast;
+ u64 rx_multicast;
+ u64 rx_broadcast;
+ u64 rx_packets;
+ u64 rx_errors_total;
+ u64 tx_errors_total;
+
+ /* version 2 stats */
+ u64 tx_deferral;
+ u64 tx_packets;
+ u64 rx_bytes;
+ u64 tx_pause;
+ u64 rx_pause;
+ u64 rx_drop_frame;
+
+ /* version 3 stats */
+ u64 tx_unicast;
+ u64 tx_multicast;
+ u64 tx_broadcast;
+};
+
+#define NV_DEV_STATISTICS_V3_COUNT (sizeof(struct nv_ethtool_stats)/sizeof(u64))
+#define NV_DEV_STATISTICS_V2_COUNT (NV_DEV_STATISTICS_V3_COUNT - 3)
+#define NV_DEV_STATISTICS_V1_COUNT (NV_DEV_STATISTICS_V2_COUNT - 6)
+
+/* diagnostics */
+#define NV_TEST_COUNT_BASE 3
+#define NV_TEST_COUNT_EXTENDED 4
+
+static const struct nv_ethtool_str nv_etests_str[] = {
+ { "link (online/offline)" },
+ { "register (offline) " },
+ { "interrupt (offline) " },
+ { "loopback (offline) " }
+};
+
+struct register_test {
+ __u32 reg;
+ __u32 mask;
+};
+
+static const struct register_test nv_registers_test[] = {
+ { NvRegUnknownSetupReg6, 0x01 },
+ { NvRegMisc1, 0x03c },
+ { NvRegOffloadConfig, 0x03ff },
+ { NvRegMulticastAddrA, 0xffffffff },
+ { NvRegTxWatermark, 0x0ff },
+ { NvRegWakeUpFlags, 0x07777 },
+ { 0, 0 }
+};
+
+struct nv_skb_map {
+ struct sk_buff *skb;
+ dma_addr_t dma;
+ unsigned int dma_len:31;
+ unsigned int dma_single:1;
+ struct ring_desc_ex *first_tx_desc;
+ struct nv_skb_map *next_tx_ctx;
+};
+
+/*
+ * SMP locking:
+ * All hardware access under netdev_priv(dev)->lock, except the performance
+ * critical parts:
+ * - rx is (pseudo-) lockless: it relies on the single-threading provided
+ * by the arch code for interrupts.
+ * - tx setup is lockless: it relies on netif_tx_lock. Actual submission
+ * needs netdev_priv(dev)->lock :-(
+ * - set_multicast_list: preparation lockless, relies on netif_tx_lock.
+ */
+
+/* in dev: base, irq */
+struct fe_priv {
+ spinlock_t lock;
+
+ struct net_device *dev;
+ struct napi_struct napi;
+
+ /* General data:
+ * Locking: spin_lock(&np->lock); */
+ struct nv_ethtool_stats estats;
+ int in_shutdown;
+ u32 linkspeed;
+ int duplex;
+ int autoneg;
+ int fixed_mode;
+ int phyaddr;
+ int wolenabled;
+ unsigned int phy_oui;
+ unsigned int phy_model;
+ unsigned int phy_rev;
+ u16 gigabit;
+ int intr_test;
+ int recover_error;
+ int quiet_count;
+
+ /* General data: RO fields */
+ dma_addr_t ring_addr;
+ struct pci_dev *pci_dev;
+ u32 orig_mac[2];
+ u32 events;
+ u32 irqmask;
+ u32 desc_ver;
+ u32 txrxctl_bits;
+ u32 vlanctl_bits;
+ u32 driver_data;
+ u32 device_id;
+ u32 register_size;
+ u32 mac_in_use;
+ int mgmt_version;
+ int mgmt_sema;
+
+ void __iomem *base;
+
+ /* rx specific fields.
+ * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
+ */
+ union ring_type get_rx, put_rx, first_rx, last_rx;
+ struct nv_skb_map *get_rx_ctx, *put_rx_ctx;
+ struct nv_skb_map *first_rx_ctx, *last_rx_ctx;
+ struct nv_skb_map *rx_skb;
+
+ union ring_type rx_ring;
+ unsigned int rx_buf_sz;
+ unsigned int pkt_limit;
+ struct timer_list oom_kick;
+ struct timer_list nic_poll;
+ struct timer_list stats_poll;
+ u32 nic_poll_irq;
+ int rx_ring_size;
+
+ /* media detection workaround.
+ * Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
+ */
+ int need_linktimer;
+ unsigned long link_timeout;
+ /*
+ * tx specific fields.
+ */
+ union ring_type get_tx, put_tx, first_tx, last_tx;
+ struct nv_skb_map *get_tx_ctx, *put_tx_ctx;
+ struct nv_skb_map *first_tx_ctx, *last_tx_ctx;
+ struct nv_skb_map *tx_skb;
+
+ union ring_type tx_ring;
+ u32 tx_flags;
+ int tx_ring_size;
+ int tx_limit;
+ u32 tx_pkts_in_progress;
+ struct nv_skb_map *tx_change_owner;
+ struct nv_skb_map *tx_end_flip;
+ int tx_stop;
+
+ /* msi/msi-x fields */
+ u32 msi_flags;
+ struct msix_entry msi_x_entry[NV_MSI_X_MAX_VECTORS];
+
+ /* flow control */
+ u32 pause_flags;
+
+ /* power saved state */
+ u32 saved_config_space[NV_PCI_REGSZ_MAX/4];
+
+ /* for different msi-x irq type */
+ char name_rx[IFNAMSIZ + 3]; /* -rx */
+ char name_tx[IFNAMSIZ + 3]; /* -tx */
+ char name_other[IFNAMSIZ + 6]; /* -other */
+};
+
+/*
+ * Maximum number of loops until we assume that a bit in the irq mask
+ * is stuck. Overridable with module param.
+ */
+static int max_interrupt_work = 4;
+
+/*
+ * Optimization can be either throuput mode or cpu mode
+ *
+ * Throughput Mode: Every tx and rx packet will generate an interrupt.
+ * CPU Mode: Interrupts are controlled by a timer.
+ */
+enum {
+ NV_OPTIMIZATION_MODE_THROUGHPUT,
+ NV_OPTIMIZATION_MODE_CPU,
+ NV_OPTIMIZATION_MODE_DYNAMIC
+};
+static int optimization_mode = NV_OPTIMIZATION_MODE_DYNAMIC;
+
+/*
+ * Poll interval for timer irq
+ *
+ * This interval determines how frequent an interrupt is generated.
+ * The is value is determined by [(time_in_micro_secs * 100) / (2^10)]
+ * Min = 0, and Max = 65535
+ */
+static int poll_interval = -1;
+
+/*
+ * MSI interrupts
+ */
+enum {
+ NV_MSI_INT_DISABLED,
+ NV_MSI_INT_ENABLED
+};
+static int msi = NV_MSI_INT_ENABLED;
+
+/*
+ * MSIX interrupts
+ */
+enum {
+ NV_MSIX_INT_DISABLED,
+ NV_MSIX_INT_ENABLED
+};
+static int msix = NV_MSIX_INT_ENABLED;
+
+/*
+ * DMA 64bit
+ */
+enum {
+ NV_DMA_64BIT_DISABLED,
+ NV_DMA_64BIT_ENABLED
+};
+static int dma_64bit = NV_DMA_64BIT_ENABLED;
+
+/*
+ * Crossover Detection
+ * Realtek 8201 phy + some OEM boards do not work properly.
+ */
+enum {
+ NV_CROSSOVER_DETECTION_DISABLED,
+ NV_CROSSOVER_DETECTION_ENABLED
+};
+static int phy_cross = NV_CROSSOVER_DETECTION_DISABLED;
+
+/*
+ * Power down phy when interface is down (persists through reboot;
+ * older Linux and other OSes may not power it up again)
+ */
+static int phy_power_down;
+
+static inline struct fe_priv *get_nvpriv(struct net_device *dev)
+{
+ return netdev_priv(dev);
+}
+
+static inline u8 __iomem *get_hwbase(struct net_device *dev)
+{
+ return ((struct fe_priv *)netdev_priv(dev))->base;
+}
+
+static inline void pci_push(u8 __iomem *base)
+{
+ /* force out pending posted writes */
+ readl(base);
+}
+
+static inline u32 nv_descr_getlength(struct ring_desc *prd, u32 v)
+{
+ return le32_to_cpu(prd->flaglen)
+ & ((v == DESC_VER_1) ? LEN_MASK_V1 : LEN_MASK_V2);
+}
+
+static inline u32 nv_descr_getlength_ex(struct ring_desc_ex *prd, u32 v)
+{
+ return le32_to_cpu(prd->flaglen) & LEN_MASK_V2;
+}
+
+static bool nv_optimized(struct fe_priv *np)
+{
+ if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2)
+ return false;
+ return true;
+}
+
+static int reg_delay(struct net_device *dev, int offset, u32 mask, u32 target,
+ int delay, int delaymax)
+{
+ u8 __iomem *base = get_hwbase(dev);
+
+ pci_push(base);
+ do {
+ udelay(delay);
+ delaymax -= delay;
+ if (delaymax < 0)
+ return 1;
+ } while ((readl(base + offset) & mask) != target);
+ return 0;
+}
+
+#define NV_SETUP_RX_RING 0x01
+#define NV_SETUP_TX_RING 0x02
+
+static inline u32 dma_low(dma_addr_t addr)
+{
+ return addr;
+}
+
+static inline u32 dma_high(dma_addr_t addr)
+{
+ return addr>>31>>1; /* 0 if 32bit, shift down by 32 if 64bit */
+}
+
+static void setup_hw_rings(struct net_device *dev, int rxtx_flags)
+{
+ struct fe_priv *np = get_nvpriv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+
+ if (!nv_optimized(np)) {
+ if (rxtx_flags & NV_SETUP_RX_RING)
+ writel(dma_low(np->ring_addr), base + NvRegRxRingPhysAddr);
+ if (rxtx_flags & NV_SETUP_TX_RING)
+ writel(dma_low(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc)), base + NvRegTxRingPhysAddr);
+ } else {
+ if (rxtx_flags & NV_SETUP_RX_RING) {
+ writel(dma_low(np->ring_addr), base + NvRegRxRingPhysAddr);
+ writel(dma_high(np->ring_addr), base + NvRegRxRingPhysAddrHigh);
+ }
+ if (rxtx_flags & NV_SETUP_TX_RING) {
+ writel(dma_low(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddr);
+ writel(dma_high(np->ring_addr + np->rx_ring_size*sizeof(struct ring_desc_ex)), base + NvRegTxRingPhysAddrHigh);
+ }
+ }
+}
+
+static void free_rings(struct net_device *dev)
+{
+ struct fe_priv *np = get_nvpriv(dev);
+
+ if (!nv_optimized(np)) {
+ if (np->rx_ring.orig)
+ pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (np->rx_ring_size + np->tx_ring_size),
+ np->rx_ring.orig, np->ring_addr);
+ } else {
+ if (np->rx_ring.ex)
+ pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (np->rx_ring_size + np->tx_ring_size),
+ np->rx_ring.ex, np->ring_addr);
+ }
+ kfree(np->rx_skb);
+ kfree(np->tx_skb);
+}
+
+static int using_multi_irqs(struct net_device *dev)
+{
+ struct fe_priv *np = get_nvpriv(dev);
+
+ if (!(np->msi_flags & NV_MSI_X_ENABLED) ||
+ ((np->msi_flags & NV_MSI_X_ENABLED) &&
+ ((np->msi_flags & NV_MSI_X_VECTORS_MASK) == 0x1)))
+ return 0;
+ else
+ return 1;
+}
+
+static void nv_txrx_gate(struct net_device *dev, bool gate)
+{
+ struct fe_priv *np = get_nvpriv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ u32 powerstate;
+
+ if (!np->mac_in_use &&
+ (np->driver_data & DEV_HAS_POWER_CNTRL)) {
+ powerstate = readl(base + NvRegPowerState2);
+ if (gate)
+ powerstate |= NVREG_POWERSTATE2_GATE_CLOCKS;
+ else
+ powerstate &= ~NVREG_POWERSTATE2_GATE_CLOCKS;
+ writel(powerstate, base + NvRegPowerState2);
+ }
+}
+
+static void nv_enable_irq(struct net_device *dev)
+{
+ struct fe_priv *np = get_nvpriv(dev);
+
+ if (!using_multi_irqs(dev)) {
+ if (np->msi_flags & NV_MSI_X_ENABLED)
+ enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
+ else
+ enable_irq(np->pci_dev->irq);
+ } else {
+ enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
+ enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
+ enable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
+ }
+}
+
+static void nv_disable_irq(struct net_device *dev)
+{
+ struct fe_priv *np = get_nvpriv(dev);
+
+ if (!using_multi_irqs(dev)) {
+ if (np->msi_flags & NV_MSI_X_ENABLED)
+ disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
+ else
+ disable_irq(np->pci_dev->irq);
+ } else {
+ disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
+ disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
+ disable_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
+ }
+}
+
+/* In MSIX mode, a write to irqmask behaves as XOR */
+static void nv_enable_hw_interrupts(struct net_device *dev, u32 mask)
+{
+ u8 __iomem *base = get_hwbase(dev);
+
+ writel(mask, base + NvRegIrqMask);
+}
+
+static void nv_disable_hw_interrupts(struct net_device *dev, u32 mask)
+{
+ struct fe_priv *np = get_nvpriv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+
+ if (np->msi_flags & NV_MSI_X_ENABLED) {
+ writel(mask, base + NvRegIrqMask);
+ } else {
+ if (np->msi_flags & NV_MSI_ENABLED)
+ writel(0, base + NvRegMSIIrqMask);
+ writel(0, base + NvRegIrqMask);
+ }
+}
+
+static void nv_napi_enable(struct net_device *dev)
+{
+ struct fe_priv *np = get_nvpriv(dev);
+
+ napi_enable(&np->napi);
+}
+
+static void nv_napi_disable(struct net_device *dev)
+{
+ struct fe_priv *np = get_nvpriv(dev);
+
+ napi_disable(&np->napi);
+}
+
+#define MII_READ (-1)
+/* mii_rw: read/write a register on the PHY.
+ *
+ * Caller must guarantee serialization
+ */
+static int mii_rw(struct net_device *dev, int addr, int miireg, int value)
+{
+ u8 __iomem *base = get_hwbase(dev);
+ u32 reg;
+ int retval;
+
+ writel(NVREG_MIISTAT_MASK_RW, base + NvRegMIIStatus);
+
+ reg = readl(base + NvRegMIIControl);
+ if (reg & NVREG_MIICTL_INUSE) {
+ writel(NVREG_MIICTL_INUSE, base + NvRegMIIControl);
+ udelay(NV_MIIBUSY_DELAY);
+ }
+
+ reg = (addr << NVREG_MIICTL_ADDRSHIFT) | miireg;
+ if (value != MII_READ) {
+ writel(value, base + NvRegMIIData);
+ reg |= NVREG_MIICTL_WRITE;
+ }
+ writel(reg, base + NvRegMIIControl);
+
+ if (reg_delay(dev, NvRegMIIControl, NVREG_MIICTL_INUSE, 0,
+ NV_MIIPHY_DELAY, NV_MIIPHY_DELAYMAX)) {
+ retval = -1;
+ } else if (value != MII_READ) {
+ /* it was a write operation - fewer failures are detectable */
+ retval = 0;
+ } else if (readl(base + NvRegMIIStatus) & NVREG_MIISTAT_ERROR) {
+ retval = -1;
+ } else {
+ retval = readl(base + NvRegMIIData);
+ }
+
+ return retval;
+}
+
+static int phy_reset(struct net_device *dev, u32 bmcr_setup)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u32 miicontrol;
+ unsigned int tries = 0;
+
+ miicontrol = BMCR_RESET | bmcr_setup;
+ if (mii_rw(dev, np->phyaddr, MII_BMCR, miicontrol))
+ return -1;
+
+ /* wait for 500ms */
+ msleep(500);
+
+ /* must wait till reset is deasserted */
+ while (miicontrol & BMCR_RESET) {
+ usleep_range(10000, 20000);
+ miicontrol = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
+ /* FIXME: 100 tries seem excessive */
+ if (tries++ > 100)
+ return -1;
+ }
+ return 0;
+}
+
+static int init_realtek_8211b(struct net_device *dev, struct fe_priv *np)
+{
+ static const struct {
+ int reg;
+ int init;
+ } ri[] = {
+ { PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1 },
+ { PHY_REALTEK_INIT_REG2, PHY_REALTEK_INIT2 },
+ { PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3 },
+ { PHY_REALTEK_INIT_REG3, PHY_REALTEK_INIT4 },
+ { PHY_REALTEK_INIT_REG4, PHY_REALTEK_INIT5 },
+ { PHY_REALTEK_INIT_REG5, PHY_REALTEK_INIT6 },
+ { PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1 },
+ };
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(ri); i++) {
+ if (mii_rw(dev, np->phyaddr, ri[i].reg, ri[i].init))
+ return PHY_ERROR;
+ }
+
+ return 0;
+}
+
+static int init_realtek_8211c(struct net_device *dev, struct fe_priv *np)
+{
+ u32 reg;
+ u8 __iomem *base = get_hwbase(dev);
+ u32 powerstate = readl(base + NvRegPowerState2);
+
+ /* need to perform hw phy reset */
+ powerstate |= NVREG_POWERSTATE2_PHY_RESET;
+ writel(powerstate, base + NvRegPowerState2);
+ msleep(25);
+
+ powerstate &= ~NVREG_POWERSTATE2_PHY_RESET;
+ writel(powerstate, base + NvRegPowerState2);
+ msleep(25);
+
+ reg = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG6, MII_READ);
+ reg |= PHY_REALTEK_INIT9;
+ if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG6, reg))
+ return PHY_ERROR;
+ if (mii_rw(dev, np->phyaddr,
+ PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT10))
+ return PHY_ERROR;
+ reg = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG7, MII_READ);
+ if (!(reg & PHY_REALTEK_INIT11)) {
+ reg |= PHY_REALTEK_INIT11;
+ if (mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG7, reg))
+ return PHY_ERROR;
+ }
+ if (mii_rw(dev, np->phyaddr,
+ PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1))
+ return PHY_ERROR;
+
+ return 0;
+}
+
+static int init_realtek_8201(struct net_device *dev, struct fe_priv *np)
+{
+ u32 phy_reserved;
+
+ if (np->driver_data & DEV_NEED_PHY_INIT_FIX) {
+ phy_reserved = mii_rw(dev, np->phyaddr,
+ PHY_REALTEK_INIT_REG6, MII_READ);
+ phy_reserved |= PHY_REALTEK_INIT7;
+ if (mii_rw(dev, np->phyaddr,
+ PHY_REALTEK_INIT_REG6, phy_reserved))
+ return PHY_ERROR;
+ }
+
+ return 0;
+}
+
+static int init_realtek_8201_cross(struct net_device *dev, struct fe_priv *np)
+{
+ u32 phy_reserved;
+
+ if (phy_cross == NV_CROSSOVER_DETECTION_DISABLED) {
+ if (mii_rw(dev, np->phyaddr,
+ PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3))
+ return PHY_ERROR;
+ phy_reserved = mii_rw(dev, np->phyaddr,
+ PHY_REALTEK_INIT_REG2, MII_READ);
+ phy_reserved &= ~PHY_REALTEK_INIT_MSK1;
+ phy_reserved |= PHY_REALTEK_INIT3;
+ if (mii_rw(dev, np->phyaddr,
+ PHY_REALTEK_INIT_REG2, phy_reserved))
+ return PHY_ERROR;
+ if (mii_rw(dev, np->phyaddr,
+ PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1))
+ return PHY_ERROR;
+ }
+
+ return 0;
+}
+
+static int init_cicada(struct net_device *dev, struct fe_priv *np,
+ u32 phyinterface)
+{
+ u32 phy_reserved;
+
+ if (phyinterface & PHY_RGMII) {
+ phy_reserved = mii_rw(dev, np->phyaddr, MII_RESV1, MII_READ);
+ phy_reserved &= ~(PHY_CICADA_INIT1 | PHY_CICADA_INIT2);
+ phy_reserved |= (PHY_CICADA_INIT3 | PHY_CICADA_INIT4);
+ if (mii_rw(dev, np->phyaddr, MII_RESV1, phy_reserved))
+ return PHY_ERROR;
+ phy_reserved = mii_rw(dev, np->phyaddr, MII_NCONFIG, MII_READ);
+ phy_reserved |= PHY_CICADA_INIT5;
+ if (mii_rw(dev, np->phyaddr, MII_NCONFIG, phy_reserved))
+ return PHY_ERROR;
+ }
+ phy_reserved = mii_rw(dev, np->phyaddr, MII_SREVISION, MII_READ);
+ phy_reserved |= PHY_CICADA_INIT6;
+ if (mii_rw(dev, np->phyaddr, MII_SREVISION, phy_reserved))
+ return PHY_ERROR;
+
+ return 0;
+}
+
+static int init_vitesse(struct net_device *dev, struct fe_priv *np)
+{
+ u32 phy_reserved;
+
+ if (mii_rw(dev, np->phyaddr,
+ PHY_VITESSE_INIT_REG1, PHY_VITESSE_INIT1))
+ return PHY_ERROR;
+ if (mii_rw(dev, np->phyaddr,
+ PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT2))
+ return PHY_ERROR;
+ phy_reserved = mii_rw(dev, np->phyaddr,
+ PHY_VITESSE_INIT_REG4, MII_READ);
+ if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved))
+ return PHY_ERROR;
+ phy_reserved = mii_rw(dev, np->phyaddr,
+ PHY_VITESSE_INIT_REG3, MII_READ);
+ phy_reserved &= ~PHY_VITESSE_INIT_MSK1;
+ phy_reserved |= PHY_VITESSE_INIT3;
+ if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved))
+ return PHY_ERROR;
+ if (mii_rw(dev, np->phyaddr,
+ PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT4))
+ return PHY_ERROR;
+ if (mii_rw(dev, np->phyaddr,
+ PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT5))
+ return PHY_ERROR;
+ phy_reserved = mii_rw(dev, np->phyaddr,
+ PHY_VITESSE_INIT_REG4, MII_READ);
+ phy_reserved &= ~PHY_VITESSE_INIT_MSK1;
+ phy_reserved |= PHY_VITESSE_INIT3;
+ if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved))
+ return PHY_ERROR;
+ phy_reserved = mii_rw(dev, np->phyaddr,
+ PHY_VITESSE_INIT_REG3, MII_READ);
+ if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved))
+ return PHY_ERROR;
+ if (mii_rw(dev, np->phyaddr,
+ PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT6))
+ return PHY_ERROR;
+ if (mii_rw(dev, np->phyaddr,
+ PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT7))
+ return PHY_ERROR;
+ phy_reserved = mii_rw(dev, np->phyaddr,
+ PHY_VITESSE_INIT_REG4, MII_READ);
+ if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG4, phy_reserved))
+ return PHY_ERROR;
+ phy_reserved = mii_rw(dev, np->phyaddr,
+ PHY_VITESSE_INIT_REG3, MII_READ);
+ phy_reserved &= ~PHY_VITESSE_INIT_MSK2;
+ phy_reserved |= PHY_VITESSE_INIT8;
+ if (mii_rw(dev, np->phyaddr, PHY_VITESSE_INIT_REG3, phy_reserved))
+ return PHY_ERROR;
+ if (mii_rw(dev, np->phyaddr,
+ PHY_VITESSE_INIT_REG2, PHY_VITESSE_INIT9))
+ return PHY_ERROR;
+ if (mii_rw(dev, np->phyaddr,
+ PHY_VITESSE_INIT_REG1, PHY_VITESSE_INIT10))
+ return PHY_ERROR;
+
+ return 0;
+}
+
+static int phy_init(struct net_device *dev)
+{
+ struct fe_priv *np = get_nvpriv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ u32 phyinterface;
+ u32 mii_status, mii_control, mii_control_1000, reg;
+
+ /* phy errata for E3016 phy */
+ if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
+ reg = mii_rw(dev, np->phyaddr, MII_NCONFIG, MII_READ);
+ reg &= ~PHY_MARVELL_E3016_INITMASK;
+ if (mii_rw(dev, np->phyaddr, MII_NCONFIG, reg)) {
+ netdev_info(dev, "%s: phy write to errata reg failed\n",
+ pci_name(np->pci_dev));
+ return PHY_ERROR;
+ }
+ }
+ if (np->phy_oui == PHY_OUI_REALTEK) {
+ if (np->phy_model == PHY_MODEL_REALTEK_8211 &&
+ np->phy_rev == PHY_REV_REALTEK_8211B) {
+ if (init_realtek_8211b(dev, np)) {
+ netdev_info(dev, "%s: phy init failed\n",
+ pci_name(np->pci_dev));
+ return PHY_ERROR;
+ }
+ } else if (np->phy_model == PHY_MODEL_REALTEK_8211 &&
+ np->phy_rev == PHY_REV_REALTEK_8211C) {
+ if (init_realtek_8211c(dev, np)) {
+ netdev_info(dev, "%s: phy init failed\n",
+ pci_name(np->pci_dev));
+ return PHY_ERROR;
+ }
+ } else if (np->phy_model == PHY_MODEL_REALTEK_8201) {
+ if (init_realtek_8201(dev, np)) {
+ netdev_info(dev, "%s: phy init failed\n",
+ pci_name(np->pci_dev));
+ return PHY_ERROR;
+ }
+ }
+ }
+
+ /* set advertise register */
+ reg = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
+ reg |= (ADVERTISE_10HALF | ADVERTISE_10FULL |
+ ADVERTISE_100HALF | ADVERTISE_100FULL |
+ ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP);
+ if (mii_rw(dev, np->phyaddr, MII_ADVERTISE, reg)) {
+ netdev_info(dev, "%s: phy write to advertise failed\n",
+ pci_name(np->pci_dev));
+ return PHY_ERROR;
+ }
+
+ /* get phy interface type */
+ phyinterface = readl(base + NvRegPhyInterface);
+
+ /* see if gigabit phy */
+ mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
+ if (mii_status & PHY_GIGABIT) {
+ np->gigabit = PHY_GIGABIT;
+ mii_control_1000 = mii_rw(dev, np->phyaddr,
+ MII_CTRL1000, MII_READ);
+ mii_control_1000 &= ~ADVERTISE_1000HALF;
+ if (phyinterface & PHY_RGMII)
+ mii_control_1000 |= ADVERTISE_1000FULL;
+ else
+ mii_control_1000 &= ~ADVERTISE_1000FULL;
+
+ if (mii_rw(dev, np->phyaddr, MII_CTRL1000, mii_control_1000)) {
+ netdev_info(dev, "%s: phy init failed\n",
+ pci_name(np->pci_dev));
+ return PHY_ERROR;
+ }
+ } else
+ np->gigabit = 0;
+
+ mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
+ mii_control |= BMCR_ANENABLE;
+
+ if (np->phy_oui == PHY_OUI_REALTEK &&
+ np->phy_model == PHY_MODEL_REALTEK_8211 &&
+ np->phy_rev == PHY_REV_REALTEK_8211C) {
+ /* start autoneg since we already performed hw reset above */
+ mii_control |= BMCR_ANRESTART;
+ if (mii_rw(dev, np->phyaddr, MII_BMCR, mii_control)) {
+ netdev_info(dev, "%s: phy init failed\n",
+ pci_name(np->pci_dev));
+ return PHY_ERROR;
+ }
+ } else {
+ /* reset the phy
+ * (certain phys need bmcr to be setup with reset)
+ */
+ if (phy_reset(dev, mii_control)) {
+ netdev_info(dev, "%s: phy reset failed\n",
+ pci_name(np->pci_dev));
+ return PHY_ERROR;
+ }
+ }
+
+ /* phy vendor specific configuration */
+ if ((np->phy_oui == PHY_OUI_CICADA)) {
+ if (init_cicada(dev, np, phyinterface)) {
+ netdev_info(dev, "%s: phy init failed\n",
+ pci_name(np->pci_dev));
+ return PHY_ERROR;
+ }
+ } else if (np->phy_oui == PHY_OUI_VITESSE) {
+ if (init_vitesse(dev, np)) {
+ netdev_info(dev, "%s: phy init failed\n",
+ pci_name(np->pci_dev));
+ return PHY_ERROR;
+ }
+ } else if (np->phy_oui == PHY_OUI_REALTEK) {
+ if (np->phy_model == PHY_MODEL_REALTEK_8211 &&
+ np->phy_rev == PHY_REV_REALTEK_8211B) {
+ /* reset could have cleared these out, set them back */
+ if (init_realtek_8211b(dev, np)) {
+ netdev_info(dev, "%s: phy init failed\n",
+ pci_name(np->pci_dev));
+ return PHY_ERROR;
+ }
+ } else if (np->phy_model == PHY_MODEL_REALTEK_8201) {
+ if (init_realtek_8201(dev, np) ||
+ init_realtek_8201_cross(dev, np)) {
+ netdev_info(dev, "%s: phy init failed\n",
+ pci_name(np->pci_dev));
+ return PHY_ERROR;
+ }
+ }
+ }
+
+ /* some phys clear out pause advertisement on reset, set it back */
+ mii_rw(dev, np->phyaddr, MII_ADVERTISE, reg);
+
+ /* restart auto negotiation, power down phy */
+ mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
+ mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE);
+ if (phy_power_down)
+ mii_control |= BMCR_PDOWN;
+ if (mii_rw(dev, np->phyaddr, MII_BMCR, mii_control))
+ return PHY_ERROR;
+
+ return 0;
+}
+
+static void nv_start_rx(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ u32 rx_ctrl = readl(base + NvRegReceiverControl);
+
+ /* Already running? Stop it. */
+ if ((readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) && !np->mac_in_use) {
+ rx_ctrl &= ~NVREG_RCVCTL_START;
+ writel(rx_ctrl, base + NvRegReceiverControl);
+ pci_push(base);
+ }
+ writel(np->linkspeed, base + NvRegLinkSpeed);
+ pci_push(base);
+ rx_ctrl |= NVREG_RCVCTL_START;
+ if (np->mac_in_use)
+ rx_ctrl &= ~NVREG_RCVCTL_RX_PATH_EN;
+ writel(rx_ctrl, base + NvRegReceiverControl);
+ pci_push(base);
+}
+
+static void nv_stop_rx(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ u32 rx_ctrl = readl(base + NvRegReceiverControl);
+
+ if (!np->mac_in_use)
+ rx_ctrl &= ~NVREG_RCVCTL_START;
+ else
+ rx_ctrl |= NVREG_RCVCTL_RX_PATH_EN;
+ writel(rx_ctrl, base + NvRegReceiverControl);
+ if (reg_delay(dev, NvRegReceiverStatus, NVREG_RCVSTAT_BUSY, 0,
+ NV_RXSTOP_DELAY1, NV_RXSTOP_DELAY1MAX))
+ netdev_info(dev, "%s: ReceiverStatus remained busy\n",
+ __func__);
+
+ udelay(NV_RXSTOP_DELAY2);
+ if (!np->mac_in_use)
+ writel(0, base + NvRegLinkSpeed);
+}
+
+static void nv_start_tx(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ u32 tx_ctrl = readl(base + NvRegTransmitterControl);
+
+ tx_ctrl |= NVREG_XMITCTL_START;
+ if (np->mac_in_use)
+ tx_ctrl &= ~NVREG_XMITCTL_TX_PATH_EN;
+ writel(tx_ctrl, base + NvRegTransmitterControl);
+ pci_push(base);
+}
+
+static void nv_stop_tx(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ u32 tx_ctrl = readl(base + NvRegTransmitterControl);
+
+ if (!np->mac_in_use)
+ tx_ctrl &= ~NVREG_XMITCTL_START;
+ else
+ tx_ctrl |= NVREG_XMITCTL_TX_PATH_EN;
+ writel(tx_ctrl, base + NvRegTransmitterControl);
+ if (reg_delay(dev, NvRegTransmitterStatus, NVREG_XMITSTAT_BUSY, 0,
+ NV_TXSTOP_DELAY1, NV_TXSTOP_DELAY1MAX))
+ netdev_info(dev, "%s: TransmitterStatus remained busy\n",
+ __func__);
+
+ udelay(NV_TXSTOP_DELAY2);
+ if (!np->mac_in_use)
+ writel(readl(base + NvRegTransmitPoll) & NVREG_TRANSMITPOLL_MAC_ADDR_REV,
+ base + NvRegTransmitPoll);
+}
+
+static void nv_start_rxtx(struct net_device *dev)
+{
+ nv_start_rx(dev);
+ nv_start_tx(dev);
+}
+
+static void nv_stop_rxtx(struct net_device *dev)
+{
+ nv_stop_rx(dev);
+ nv_stop_tx(dev);
+}
+
+static void nv_txrx_reset(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+
+ writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->txrxctl_bits, base + NvRegTxRxControl);
+ pci_push(base);
+ udelay(NV_TXRX_RESET_DELAY);
+ writel(NVREG_TXRXCTL_BIT2 | np->txrxctl_bits, base + NvRegTxRxControl);
+ pci_push(base);
+}
+
+static void nv_mac_reset(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ u32 temp1, temp2, temp3;
+
+ writel(NVREG_TXRXCTL_BIT2 | NVREG_TXRXCTL_RESET | np->txrxctl_bits, base + NvRegTxRxControl);
+ pci_push(base);
+
+ /* save registers since they will be cleared on reset */
+ temp1 = readl(base + NvRegMacAddrA);
+ temp2 = readl(base + NvRegMacAddrB);
+ temp3 = readl(base + NvRegTransmitPoll);
+
+ writel(NVREG_MAC_RESET_ASSERT, base + NvRegMacReset);
+ pci_push(base);
+ udelay(NV_MAC_RESET_DELAY);
+ writel(0, base + NvRegMacReset);
+ pci_push(base);
+ udelay(NV_MAC_RESET_DELAY);
+
+ /* restore saved registers */
+ writel(temp1, base + NvRegMacAddrA);
+ writel(temp2, base + NvRegMacAddrB);
+ writel(temp3, base + NvRegTransmitPoll);
+
+ writel(NVREG_TXRXCTL_BIT2 | np->txrxctl_bits, base + NvRegTxRxControl);
+ pci_push(base);
+}
+
+static void nv_get_hw_stats(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+
+ np->estats.tx_bytes += readl(base + NvRegTxCnt);
+ np->estats.tx_zero_rexmt += readl(base + NvRegTxZeroReXmt);
+ np->estats.tx_one_rexmt += readl(base + NvRegTxOneReXmt);
+ np->estats.tx_many_rexmt += readl(base + NvRegTxManyReXmt);
+ np->estats.tx_late_collision += readl(base + NvRegTxLateCol);
+ np->estats.tx_fifo_errors += readl(base + NvRegTxUnderflow);
+ np->estats.tx_carrier_errors += readl(base + NvRegTxLossCarrier);
+ np->estats.tx_excess_deferral += readl(base + NvRegTxExcessDef);
+ np->estats.tx_retry_error += readl(base + NvRegTxRetryErr);
+ np->estats.rx_frame_error += readl(base + NvRegRxFrameErr);
+ np->estats.rx_extra_byte += readl(base + NvRegRxExtraByte);
+ np->estats.rx_late_collision += readl(base + NvRegRxLateCol);
+ np->estats.rx_runt += readl(base + NvRegRxRunt);
+ np->estats.rx_frame_too_long += readl(base + NvRegRxFrameTooLong);
+ np->estats.rx_over_errors += readl(base + NvRegRxOverflow);
+ np->estats.rx_crc_errors += readl(base + NvRegRxFCSErr);
+ np->estats.rx_frame_align_error += readl(base + NvRegRxFrameAlignErr);
+ np->estats.rx_length_error += readl(base + NvRegRxLenErr);
+ np->estats.rx_unicast += readl(base + NvRegRxUnicast);
+ np->estats.rx_multicast += readl(base + NvRegRxMulticast);
+ np->estats.rx_broadcast += readl(base + NvRegRxBroadcast);
+ np->estats.rx_packets =
+ np->estats.rx_unicast +
+ np->estats.rx_multicast +
+ np->estats.rx_broadcast;
+ np->estats.rx_errors_total =
+ np->estats.rx_crc_errors +
+ np->estats.rx_over_errors +
+ np->estats.rx_frame_error +
+ (np->estats.rx_frame_align_error - np->estats.rx_extra_byte) +
+ np->estats.rx_late_collision +
+ np->estats.rx_runt +
+ np->estats.rx_frame_too_long;
+ np->estats.tx_errors_total =
+ np->estats.tx_late_collision +
+ np->estats.tx_fifo_errors +
+ np->estats.tx_carrier_errors +
+ np->estats.tx_excess_deferral +
+ np->estats.tx_retry_error;
+
+ if (np->driver_data & DEV_HAS_STATISTICS_V2) {
+ np->estats.tx_deferral += readl(base + NvRegTxDef);
+ np->estats.tx_packets += readl(base + NvRegTxFrame);
+ np->estats.rx_bytes += readl(base + NvRegRxCnt);
+ np->estats.tx_pause += readl(base + NvRegTxPause);
+ np->estats.rx_pause += readl(base + NvRegRxPause);
+ np->estats.rx_drop_frame += readl(base + NvRegRxDropFrame);
+ }
+
+ if (np->driver_data & DEV_HAS_STATISTICS_V3) {
+ np->estats.tx_unicast += readl(base + NvRegTxUnicast);
+ np->estats.tx_multicast += readl(base + NvRegTxMulticast);
+ np->estats.tx_broadcast += readl(base + NvRegTxBroadcast);
+ }
+}
+
+/*
+ * nv_get_stats: dev->get_stats function
+ * Get latest stats value from the nic.
+ * Called with read_lock(&dev_base_lock) held for read -
+ * only synchronized against unregister_netdevice.
+ */
+static struct net_device_stats *nv_get_stats(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+
+ /* If the nic supports hw counters then retrieve latest values */
+ if (np->driver_data & (DEV_HAS_STATISTICS_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_STATISTICS_V3)) {
+ nv_get_hw_stats(dev);
+
+ /* copy to net_device stats */
+ dev->stats.tx_bytes = np->estats.tx_bytes;
+ dev->stats.tx_fifo_errors = np->estats.tx_fifo_errors;
+ dev->stats.tx_carrier_errors = np->estats.tx_carrier_errors;
+ dev->stats.rx_crc_errors = np->estats.rx_crc_errors;
+ dev->stats.rx_over_errors = np->estats.rx_over_errors;
+ dev->stats.rx_errors = np->estats.rx_errors_total;
+ dev->stats.tx_errors = np->estats.tx_errors_total;
+ }
+
+ return &dev->stats;
+}
+
+/*
+ * nv_alloc_rx: fill rx ring entries.
+ * Return 1 if the allocations for the skbs failed and the
+ * rx engine is without Available descriptors
+ */
+static int nv_alloc_rx(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ struct ring_desc *less_rx;
+
+ less_rx = np->get_rx.orig;
+ if (less_rx-- == np->first_rx.orig)
+ less_rx = np->last_rx.orig;
+
+ while (np->put_rx.orig != less_rx) {
+ struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz + NV_RX_ALLOC_PAD);
+ if (skb) {
+ np->put_rx_ctx->skb = skb;
+ np->put_rx_ctx->dma = pci_map_single(np->pci_dev,
+ skb->data,
+ skb_tailroom(skb),
+ PCI_DMA_FROMDEVICE);
+ np->put_rx_ctx->dma_len = skb_tailroom(skb);
+ np->put_rx.orig->buf = cpu_to_le32(np->put_rx_ctx->dma);
+ wmb();
+ np->put_rx.orig->flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX_AVAIL);
+ if (unlikely(np->put_rx.orig++ == np->last_rx.orig))
+ np->put_rx.orig = np->first_rx.orig;
+ if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
+ np->put_rx_ctx = np->first_rx_ctx;
+ } else
+ return 1;
+ }
+ return 0;
+}
+
+static int nv_alloc_rx_optimized(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ struct ring_desc_ex *less_rx;
+
+ less_rx = np->get_rx.ex;
+ if (less_rx-- == np->first_rx.ex)
+ less_rx = np->last_rx.ex;
+
+ while (np->put_rx.ex != less_rx) {
+ struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz + NV_RX_ALLOC_PAD);
+ if (skb) {
+ np->put_rx_ctx->skb = skb;
+ np->put_rx_ctx->dma = pci_map_single(np->pci_dev,
+ skb->data,
+ skb_tailroom(skb),
+ PCI_DMA_FROMDEVICE);
+ np->put_rx_ctx->dma_len = skb_tailroom(skb);
+ np->put_rx.ex->bufhigh = cpu_to_le32(dma_high(np->put_rx_ctx->dma));
+ np->put_rx.ex->buflow = cpu_to_le32(dma_low(np->put_rx_ctx->dma));
+ wmb();
+ np->put_rx.ex->flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX2_AVAIL);
+ if (unlikely(np->put_rx.ex++ == np->last_rx.ex))
+ np->put_rx.ex = np->first_rx.ex;
+ if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
+ np->put_rx_ctx = np->first_rx_ctx;
+ } else
+ return 1;
+ }
+ return 0;
+}
+
+/* If rx bufs are exhausted called after 50ms to attempt to refresh */
+static void nv_do_rx_refill(unsigned long data)
+{
+ struct net_device *dev = (struct net_device *) data;
+ struct fe_priv *np = netdev_priv(dev);
+
+ /* Just reschedule NAPI rx processing */
+ napi_schedule(&np->napi);
+}
+
+static void nv_init_rx(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ int i;
+
+ np->get_rx = np->put_rx = np->first_rx = np->rx_ring;
+
+ if (!nv_optimized(np))
+ np->last_rx.orig = &np->rx_ring.orig[np->rx_ring_size-1];
+ else
+ np->last_rx.ex = &np->rx_ring.ex[np->rx_ring_size-1];
+ np->get_rx_ctx = np->put_rx_ctx = np->first_rx_ctx = np->rx_skb;
+ np->last_rx_ctx = &np->rx_skb[np->rx_ring_size-1];
+
+ for (i = 0; i < np->rx_ring_size; i++) {
+ if (!nv_optimized(np)) {
+ np->rx_ring.orig[i].flaglen = 0;
+ np->rx_ring.orig[i].buf = 0;
+ } else {
+ np->rx_ring.ex[i].flaglen = 0;
+ np->rx_ring.ex[i].txvlan = 0;
+ np->rx_ring.ex[i].bufhigh = 0;
+ np->rx_ring.ex[i].buflow = 0;
+ }
+ np->rx_skb[i].skb = NULL;
+ np->rx_skb[i].dma = 0;
+ }
+}
+
+static void nv_init_tx(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ int i;
+
+ np->get_tx = np->put_tx = np->first_tx = np->tx_ring;
+
+ if (!nv_optimized(np))
+ np->last_tx.orig = &np->tx_ring.orig[np->tx_ring_size-1];
+ else
+ np->last_tx.ex = &np->tx_ring.ex[np->tx_ring_size-1];
+ np->get_tx_ctx = np->put_tx_ctx = np->first_tx_ctx = np->tx_skb;
+ np->last_tx_ctx = &np->tx_skb[np->tx_ring_size-1];
+ np->tx_pkts_in_progress = 0;
+ np->tx_change_owner = NULL;
+ np->tx_end_flip = NULL;
+ np->tx_stop = 0;
+
+ for (i = 0; i < np->tx_ring_size; i++) {
+ if (!nv_optimized(np)) {
+ np->tx_ring.orig[i].flaglen = 0;
+ np->tx_ring.orig[i].buf = 0;
+ } else {
+ np->tx_ring.ex[i].flaglen = 0;
+ np->tx_ring.ex[i].txvlan = 0;
+ np->tx_ring.ex[i].bufhigh = 0;
+ np->tx_ring.ex[i].buflow = 0;
+ }
+ np->tx_skb[i].skb = NULL;
+ np->tx_skb[i].dma = 0;
+ np->tx_skb[i].dma_len = 0;
+ np->tx_skb[i].dma_single = 0;
+ np->tx_skb[i].first_tx_desc = NULL;
+ np->tx_skb[i].next_tx_ctx = NULL;
+ }
+}
+
+static int nv_init_ring(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+
+ nv_init_tx(dev);
+ nv_init_rx(dev);
+
+ if (!nv_optimized(np))
+ return nv_alloc_rx(dev);
+ else
+ return nv_alloc_rx_optimized(dev);
+}
+
+static void nv_unmap_txskb(struct fe_priv *np, struct nv_skb_map *tx_skb)
+{
+ if (tx_skb->dma) {
+ if (tx_skb->dma_single)
+ pci_unmap_single(np->pci_dev, tx_skb->dma,
+ tx_skb->dma_len,
+ PCI_DMA_TODEVICE);
+ else
+ pci_unmap_page(np->pci_dev, tx_skb->dma,
+ tx_skb->dma_len,
+ PCI_DMA_TODEVICE);
+ tx_skb->dma = 0;
+ }
+}
+
+static int nv_release_txskb(struct fe_priv *np, struct nv_skb_map *tx_skb)
+{
+ nv_unmap_txskb(np, tx_skb);
+ if (tx_skb->skb) {
+ dev_kfree_skb_any(tx_skb->skb);
+ tx_skb->skb = NULL;
+ return 1;
+ }
+ return 0;
+}
+
+static void nv_drain_tx(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ unsigned int i;
+
+ for (i = 0; i < np->tx_ring_size; i++) {
+ if (!nv_optimized(np)) {
+ np->tx_ring.orig[i].flaglen = 0;
+ np->tx_ring.orig[i].buf = 0;
+ } else {
+ np->tx_ring.ex[i].flaglen = 0;
+ np->tx_ring.ex[i].txvlan = 0;
+ np->tx_ring.ex[i].bufhigh = 0;
+ np->tx_ring.ex[i].buflow = 0;
+ }
+ if (nv_release_txskb(np, &np->tx_skb[i]))
+ dev->stats.tx_dropped++;
+ np->tx_skb[i].dma = 0;
+ np->tx_skb[i].dma_len = 0;
+ np->tx_skb[i].dma_single = 0;
+ np->tx_skb[i].first_tx_desc = NULL;
+ np->tx_skb[i].next_tx_ctx = NULL;
+ }
+ np->tx_pkts_in_progress = 0;
+ np->tx_change_owner = NULL;
+ np->tx_end_flip = NULL;
+}
+
+static void nv_drain_rx(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ int i;
+
+ for (i = 0; i < np->rx_ring_size; i++) {
+ if (!nv_optimized(np)) {
+ np->rx_ring.orig[i].flaglen = 0;
+ np->rx_ring.orig[i].buf = 0;
+ } else {
+ np->rx_ring.ex[i].flaglen = 0;
+ np->rx_ring.ex[i].txvlan = 0;
+ np->rx_ring.ex[i].bufhigh = 0;
+ np->rx_ring.ex[i].buflow = 0;
+ }
+ wmb();
+ if (np->rx_skb[i].skb) {
+ pci_unmap_single(np->pci_dev, np->rx_skb[i].dma,
+ (skb_end_pointer(np->rx_skb[i].skb) -
+ np->rx_skb[i].skb->data),
+ PCI_DMA_FROMDEVICE);
+ dev_kfree_skb(np->rx_skb[i].skb);
+ np->rx_skb[i].skb = NULL;
+ }
+ }
+}
+
+static void nv_drain_rxtx(struct net_device *dev)
+{
+ nv_drain_tx(dev);
+ nv_drain_rx(dev);
+}
+
+static inline u32 nv_get_empty_tx_slots(struct fe_priv *np)
+{
+ return (u32)(np->tx_ring_size - ((np->tx_ring_size + (np->put_tx_ctx - np->get_tx_ctx)) % np->tx_ring_size));
+}
+
+static void nv_legacybackoff_reseed(struct net_device *dev)
+{
+ u8 __iomem *base = get_hwbase(dev);
+ u32 reg;
+ u32 low;
+ int tx_status = 0;
+
+ reg = readl(base + NvRegSlotTime) & ~NVREG_SLOTTIME_MASK;
+ get_random_bytes(&low, sizeof(low));
+ reg |= low & NVREG_SLOTTIME_MASK;
+
+ /* Need to stop tx before change takes effect.
+ * Caller has already gained np->lock.
+ */
+ tx_status = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_START;
+ if (tx_status)
+ nv_stop_tx(dev);
+ nv_stop_rx(dev);
+ writel(reg, base + NvRegSlotTime);
+ if (tx_status)
+ nv_start_tx(dev);
+ nv_start_rx(dev);
+}
+
+/* Gear Backoff Seeds */
+#define BACKOFF_SEEDSET_ROWS 8
+#define BACKOFF_SEEDSET_LFSRS 15
+
+/* Known Good seed sets */
+static const u32 main_seedset[BACKOFF_SEEDSET_ROWS][BACKOFF_SEEDSET_LFSRS] = {
+ {145, 155, 165, 175, 185, 196, 235, 245, 255, 265, 275, 285, 660, 690, 874},
+ {245, 255, 265, 575, 385, 298, 335, 345, 355, 366, 375, 385, 761, 790, 974},
+ {145, 155, 165, 175, 185, 196, 235, 245, 255, 265, 275, 285, 660, 690, 874},
+ {245, 255, 265, 575, 385, 298, 335, 345, 355, 366, 375, 386, 761, 790, 974},
+ {266, 265, 276, 585, 397, 208, 345, 355, 365, 376, 385, 396, 771, 700, 984},
+ {266, 265, 276, 586, 397, 208, 346, 355, 365, 376, 285, 396, 771, 700, 984},
+ {366, 365, 376, 686, 497, 308, 447, 455, 466, 476, 485, 496, 871, 800, 84},
+ {466, 465, 476, 786, 597, 408, 547, 555, 566, 576, 585, 597, 971, 900, 184} };
+
+static const u32 gear_seedset[BACKOFF_SEEDSET_ROWS][BACKOFF_SEEDSET_LFSRS] = {
+ {251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375, 30, 295},
+ {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
+ {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 397},
+ {251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375, 30, 295},
+ {251, 262, 273, 324, 319, 508, 375, 364, 341, 371, 398, 193, 375, 30, 295},
+ {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
+ {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395},
+ {351, 375, 373, 469, 551, 639, 477, 464, 441, 472, 498, 293, 476, 130, 395} };
+
+static void nv_gear_backoff_reseed(struct net_device *dev)
+{
+ u8 __iomem *base = get_hwbase(dev);
+ u32 miniseed1, miniseed2, miniseed2_reversed, miniseed3, miniseed3_reversed;
+ u32 temp, seedset, combinedSeed;
+ int i;
+
+ /* Setup seed for free running LFSR */
+ /* We are going to read the time stamp counter 3 times
+ and swizzle bits around to increase randomness */
+ get_random_bytes(&miniseed1, sizeof(miniseed1));
+ miniseed1 &= 0x0fff;
+ if (miniseed1 == 0)
+ miniseed1 = 0xabc;
+
+ get_random_bytes(&miniseed2, sizeof(miniseed2));
+ miniseed2 &= 0x0fff;
+ if (miniseed2 == 0)
+ miniseed2 = 0xabc;
+ miniseed2_reversed =
+ ((miniseed2 & 0xF00) >> 8) |
+ (miniseed2 & 0x0F0) |
+ ((miniseed2 & 0x00F) << 8);
+
+ get_random_bytes(&miniseed3, sizeof(miniseed3));
+ miniseed3 &= 0x0fff;
+ if (miniseed3 == 0)
+ miniseed3 = 0xabc;
+ miniseed3_reversed =
+ ((miniseed3 & 0xF00) >> 8) |
+ (miniseed3 & 0x0F0) |
+ ((miniseed3 & 0x00F) << 8);
+
+ combinedSeed = ((miniseed1 ^ miniseed2_reversed) << 12) |
+ (miniseed2 ^ miniseed3_reversed);
+
+ /* Seeds can not be zero */
+ if ((combinedSeed & NVREG_BKOFFCTRL_SEED_MASK) == 0)
+ combinedSeed |= 0x08;
+ if ((combinedSeed & (NVREG_BKOFFCTRL_SEED_MASK << NVREG_BKOFFCTRL_GEAR)) == 0)
+ combinedSeed |= 0x8000;
+
+ /* No need to disable tx here */
+ temp = NVREG_BKOFFCTRL_DEFAULT | (0 << NVREG_BKOFFCTRL_SELECT);
+ temp |= combinedSeed & NVREG_BKOFFCTRL_SEED_MASK;
+ temp |= combinedSeed >> NVREG_BKOFFCTRL_GEAR;
+ writel(temp, base + NvRegBackOffControl);
+
+ /* Setup seeds for all gear LFSRs. */
+ get_random_bytes(&seedset, sizeof(seedset));
+ seedset = seedset % BACKOFF_SEEDSET_ROWS;
+ for (i = 1; i <= BACKOFF_SEEDSET_LFSRS; i++) {
+ temp = NVREG_BKOFFCTRL_DEFAULT | (i << NVREG_BKOFFCTRL_SELECT);
+ temp |= main_seedset[seedset][i-1] & 0x3ff;
+ temp |= ((gear_seedset[seedset][i-1] & 0x3ff) << NVREG_BKOFFCTRL_GEAR);
+ writel(temp, base + NvRegBackOffControl);
+ }
+}
+
+/*
+ * nv_start_xmit: dev->hard_start_xmit function
+ * Called with netif_tx_lock held.
+ */
+static netdev_tx_t nv_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u32 tx_flags = 0;
+ u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
+ unsigned int fragments = skb_shinfo(skb)->nr_frags;
+ unsigned int i;
+ u32 offset = 0;
+ u32 bcnt;
+ u32 size = skb_headlen(skb);
+ u32 entries = (size >> NV_TX2_TSO_MAX_SHIFT) + ((size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
+ u32 empty_slots;
+ struct ring_desc *put_tx;
+ struct ring_desc *start_tx;
+ struct ring_desc *prev_tx;
+ struct nv_skb_map *prev_tx_ctx;
+ unsigned long flags;
+
+ /* add fragments to entries count */
+ for (i = 0; i < fragments; i++) {
+ entries += (skb_shinfo(skb)->frags[i].size >> NV_TX2_TSO_MAX_SHIFT) +
+ ((skb_shinfo(skb)->frags[i].size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
+ }
+
+ spin_lock_irqsave(&np->lock, flags);
+ empty_slots = nv_get_empty_tx_slots(np);
+ if (unlikely(empty_slots <= entries)) {
+ netif_stop_queue(dev);
+ np->tx_stop = 1;
+ spin_unlock_irqrestore(&np->lock, flags);
+ return NETDEV_TX_BUSY;
+ }
+ spin_unlock_irqrestore(&np->lock, flags);
+
+ start_tx = put_tx = np->put_tx.orig;
+
+ /* setup the header buffer */
+ do {
+ prev_tx = put_tx;
+ prev_tx_ctx = np->put_tx_ctx;
+ bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
+ np->put_tx_ctx->dma = pci_map_single(np->pci_dev, skb->data + offset, bcnt,
+ PCI_DMA_TODEVICE);
+ np->put_tx_ctx->dma_len = bcnt;
+ np->put_tx_ctx->dma_single = 1;
+ put_tx->buf = cpu_to_le32(np->put_tx_ctx->dma);
+ put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
+
+ tx_flags = np->tx_flags;
+ offset += bcnt;
+ size -= bcnt;
+ if (unlikely(put_tx++ == np->last_tx.orig))
+ put_tx = np->first_tx.orig;
+ if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
+ np->put_tx_ctx = np->first_tx_ctx;
+ } while (size);
+
+ /* setup the fragments */
+ for (i = 0; i < fragments; i++) {
+ skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
+ u32 size = frag->size;
+ offset = 0;
+
+ do {
+ prev_tx = put_tx;
+ prev_tx_ctx = np->put_tx_ctx;
+ bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
+ np->put_tx_ctx->dma = pci_map_page(np->pci_dev, frag->page, frag->page_offset+offset, bcnt,
+ PCI_DMA_TODEVICE);
+ np->put_tx_ctx->dma_len = bcnt;
+ np->put_tx_ctx->dma_single = 0;
+ put_tx->buf = cpu_to_le32(np->put_tx_ctx->dma);
+ put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
+
+ offset += bcnt;
+ size -= bcnt;
+ if (unlikely(put_tx++ == np->last_tx.orig))
+ put_tx = np->first_tx.orig;
+ if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
+ np->put_tx_ctx = np->first_tx_ctx;
+ } while (size);
+ }
+
+ /* set last fragment flag */
+ prev_tx->flaglen |= cpu_to_le32(tx_flags_extra);
+
+ /* save skb in this slot's context area */
+ prev_tx_ctx->skb = skb;
+
+ if (skb_is_gso(skb))
+ tx_flags_extra = NV_TX2_TSO | (skb_shinfo(skb)->gso_size << NV_TX2_TSO_SHIFT);
+ else
+ tx_flags_extra = skb->ip_summed == CHECKSUM_PARTIAL ?
+ NV_TX2_CHECKSUM_L3 | NV_TX2_CHECKSUM_L4 : 0;
+
+ spin_lock_irqsave(&np->lock, flags);
+
+ /* set tx flags */
+ start_tx->flaglen |= cpu_to_le32(tx_flags | tx_flags_extra);
+ np->put_tx.orig = put_tx;
+
+ spin_unlock_irqrestore(&np->lock, flags);
+
+ writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
+ return NETDEV_TX_OK;
+}
+
+static netdev_tx_t nv_start_xmit_optimized(struct sk_buff *skb,
+ struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u32 tx_flags = 0;
+ u32 tx_flags_extra;
+ unsigned int fragments = skb_shinfo(skb)->nr_frags;
+ unsigned int i;
+ u32 offset = 0;
+ u32 bcnt;
+ u32 size = skb_headlen(skb);
+ u32 entries = (size >> NV_TX2_TSO_MAX_SHIFT) + ((size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
+ u32 empty_slots;
+ struct ring_desc_ex *put_tx;
+ struct ring_desc_ex *start_tx;
+ struct ring_desc_ex *prev_tx;
+ struct nv_skb_map *prev_tx_ctx;
+ struct nv_skb_map *start_tx_ctx;
+ unsigned long flags;
+
+ /* add fragments to entries count */
+ for (i = 0; i < fragments; i++) {
+ entries += (skb_shinfo(skb)->frags[i].size >> NV_TX2_TSO_MAX_SHIFT) +
+ ((skb_shinfo(skb)->frags[i].size & (NV_TX2_TSO_MAX_SIZE-1)) ? 1 : 0);
+ }
+
+ spin_lock_irqsave(&np->lock, flags);
+ empty_slots = nv_get_empty_tx_slots(np);
+ if (unlikely(empty_slots <= entries)) {
+ netif_stop_queue(dev);
+ np->tx_stop = 1;
+ spin_unlock_irqrestore(&np->lock, flags);
+ return NETDEV_TX_BUSY;
+ }
+ spin_unlock_irqrestore(&np->lock, flags);
+
+ start_tx = put_tx = np->put_tx.ex;
+ start_tx_ctx = np->put_tx_ctx;
+
+ /* setup the header buffer */
+ do {
+ prev_tx = put_tx;
+ prev_tx_ctx = np->put_tx_ctx;
+ bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
+ np->put_tx_ctx->dma = pci_map_single(np->pci_dev, skb->data + offset, bcnt,
+ PCI_DMA_TODEVICE);
+ np->put_tx_ctx->dma_len = bcnt;
+ np->put_tx_ctx->dma_single = 1;
+ put_tx->bufhigh = cpu_to_le32(dma_high(np->put_tx_ctx->dma));
+ put_tx->buflow = cpu_to_le32(dma_low(np->put_tx_ctx->dma));
+ put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
+
+ tx_flags = NV_TX2_VALID;
+ offset += bcnt;
+ size -= bcnt;
+ if (unlikely(put_tx++ == np->last_tx.ex))
+ put_tx = np->first_tx.ex;
+ if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
+ np->put_tx_ctx = np->first_tx_ctx;
+ } while (size);
+
+ /* setup the fragments */
+ for (i = 0; i < fragments; i++) {
+ skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
+ u32 size = frag->size;
+ offset = 0;
+
+ do {
+ prev_tx = put_tx;
+ prev_tx_ctx = np->put_tx_ctx;
+ bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
+ np->put_tx_ctx->dma = pci_map_page(np->pci_dev, frag->page, frag->page_offset+offset, bcnt,
+ PCI_DMA_TODEVICE);
+ np->put_tx_ctx->dma_len = bcnt;
+ np->put_tx_ctx->dma_single = 0;
+ put_tx->bufhigh = cpu_to_le32(dma_high(np->put_tx_ctx->dma));
+ put_tx->buflow = cpu_to_le32(dma_low(np->put_tx_ctx->dma));
+ put_tx->flaglen = cpu_to_le32((bcnt-1) | tx_flags);
+
+ offset += bcnt;
+ size -= bcnt;
+ if (unlikely(put_tx++ == np->last_tx.ex))
+ put_tx = np->first_tx.ex;
+ if (unlikely(np->put_tx_ctx++ == np->last_tx_ctx))
+ np->put_tx_ctx = np->first_tx_ctx;
+ } while (size);
+ }
+
+ /* set last fragment flag */
+ prev_tx->flaglen |= cpu_to_le32(NV_TX2_LASTPACKET);
+
+ /* save skb in this slot's context area */
+ prev_tx_ctx->skb = skb;
+
+ if (skb_is_gso(skb))
+ tx_flags_extra = NV_TX2_TSO | (skb_shinfo(skb)->gso_size << NV_TX2_TSO_SHIFT);
+ else
+ tx_flags_extra = skb->ip_summed == CHECKSUM_PARTIAL ?
+ NV_TX2_CHECKSUM_L3 | NV_TX2_CHECKSUM_L4 : 0;
+
+ /* vlan tag */
+ if (vlan_tx_tag_present(skb))
+ start_tx->txvlan = cpu_to_le32(NV_TX3_VLAN_TAG_PRESENT |
+ vlan_tx_tag_get(skb));
+ else
+ start_tx->txvlan = 0;
+
+ spin_lock_irqsave(&np->lock, flags);
+
+ if (np->tx_limit) {
+ /* Limit the number of outstanding tx. Setup all fragments, but
+ * do not set the VALID bit on the first descriptor. Save a pointer
+ * to that descriptor and also for next skb_map element.
+ */
+
+ if (np->tx_pkts_in_progress == NV_TX_LIMIT_COUNT) {
+ if (!np->tx_change_owner)
+ np->tx_change_owner = start_tx_ctx;
+
+ /* remove VALID bit */
+ tx_flags &= ~NV_TX2_VALID;
+ start_tx_ctx->first_tx_desc = start_tx;
+ start_tx_ctx->next_tx_ctx = np->put_tx_ctx;
+ np->tx_end_flip = np->put_tx_ctx;
+ } else {
+ np->tx_pkts_in_progress++;
+ }
+ }
+
+ /* set tx flags */
+ start_tx->flaglen |= cpu_to_le32(tx_flags | tx_flags_extra);
+ np->put_tx.ex = put_tx;
+
+ spin_unlock_irqrestore(&np->lock, flags);
+
+ writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
+ return NETDEV_TX_OK;
+}
+
+static inline void nv_tx_flip_ownership(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+
+ np->tx_pkts_in_progress--;
+ if (np->tx_change_owner) {
+ np->tx_change_owner->first_tx_desc->flaglen |=
+ cpu_to_le32(NV_TX2_VALID);
+ np->tx_pkts_in_progress++;
+
+ np->tx_change_owner = np->tx_change_owner->next_tx_ctx;
+ if (np->tx_change_owner == np->tx_end_flip)
+ np->tx_change_owner = NULL;
+
+ writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
+ }
+}
+
+/*
+ * nv_tx_done: check for completed packets, release the skbs.
+ *
+ * Caller must own np->lock.
+ */
+static int nv_tx_done(struct net_device *dev, int limit)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u32 flags;
+ int tx_work = 0;
+ struct ring_desc *orig_get_tx = np->get_tx.orig;
+
+ while ((np->get_tx.orig != np->put_tx.orig) &&
+ !((flags = le32_to_cpu(np->get_tx.orig->flaglen)) & NV_TX_VALID) &&
+ (tx_work < limit)) {
+
+ nv_unmap_txskb(np, np->get_tx_ctx);
+
+ if (np->desc_ver == DESC_VER_1) {
+ if (flags & NV_TX_LASTPACKET) {
+ if (flags & NV_TX_ERROR) {
+ if (flags & NV_TX_UNDERFLOW)
+ dev->stats.tx_fifo_errors++;
+ if (flags & NV_TX_CARRIERLOST)
+ dev->stats.tx_carrier_errors++;
+ if ((flags & NV_TX_RETRYERROR) && !(flags & NV_TX_RETRYCOUNT_MASK))
+ nv_legacybackoff_reseed(dev);
+ dev->stats.tx_errors++;
+ } else {
+ dev->stats.tx_packets++;
+ dev->stats.tx_bytes += np->get_tx_ctx->skb->len;
+ }
+ dev_kfree_skb_any(np->get_tx_ctx->skb);
+ np->get_tx_ctx->skb = NULL;
+ tx_work++;
+ }
+ } else {
+ if (flags & NV_TX2_LASTPACKET) {
+ if (flags & NV_TX2_ERROR) {
+ if (flags & NV_TX2_UNDERFLOW)
+ dev->stats.tx_fifo_errors++;
+ if (flags & NV_TX2_CARRIERLOST)
+ dev->stats.tx_carrier_errors++;
+ if ((flags & NV_TX2_RETRYERROR) && !(flags & NV_TX2_RETRYCOUNT_MASK))
+ nv_legacybackoff_reseed(dev);
+ dev->stats.tx_errors++;
+ } else {
+ dev->stats.tx_packets++;
+ dev->stats.tx_bytes += np->get_tx_ctx->skb->len;
+ }
+ dev_kfree_skb_any(np->get_tx_ctx->skb);
+ np->get_tx_ctx->skb = NULL;
+ tx_work++;
+ }
+ }
+ if (unlikely(np->get_tx.orig++ == np->last_tx.orig))
+ np->get_tx.orig = np->first_tx.orig;
+ if (unlikely(np->get_tx_ctx++ == np->last_tx_ctx))
+ np->get_tx_ctx = np->first_tx_ctx;
+ }
+ if (unlikely((np->tx_stop == 1) && (np->get_tx.orig != orig_get_tx))) {
+ np->tx_stop = 0;
+ netif_wake_queue(dev);
+ }
+ return tx_work;
+}
+
+static int nv_tx_done_optimized(struct net_device *dev, int limit)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u32 flags;
+ int tx_work = 0;
+ struct ring_desc_ex *orig_get_tx = np->get_tx.ex;
+
+ while ((np->get_tx.ex != np->put_tx.ex) &&
+ !((flags = le32_to_cpu(np->get_tx.ex->flaglen)) & NV_TX2_VALID) &&
+ (tx_work < limit)) {
+
+ nv_unmap_txskb(np, np->get_tx_ctx);
+
+ if (flags & NV_TX2_LASTPACKET) {
+ if (!(flags & NV_TX2_ERROR))
+ dev->stats.tx_packets++;
+ else {
+ if ((flags & NV_TX2_RETRYERROR) && !(flags & NV_TX2_RETRYCOUNT_MASK)) {
+ if (np->driver_data & DEV_HAS_GEAR_MODE)
+ nv_gear_backoff_reseed(dev);
+ else
+ nv_legacybackoff_reseed(dev);
+ }
+ }
+
+ dev_kfree_skb_any(np->get_tx_ctx->skb);
+ np->get_tx_ctx->skb = NULL;
+ tx_work++;
+
+ if (np->tx_limit)
+ nv_tx_flip_ownership(dev);
+ }
+ if (unlikely(np->get_tx.ex++ == np->last_tx.ex))
+ np->get_tx.ex = np->first_tx.ex;
+ if (unlikely(np->get_tx_ctx++ == np->last_tx_ctx))
+ np->get_tx_ctx = np->first_tx_ctx;
+ }
+ if (unlikely((np->tx_stop == 1) && (np->get_tx.ex != orig_get_tx))) {
+ np->tx_stop = 0;
+ netif_wake_queue(dev);
+ }
+ return tx_work;
+}
+
+/*
+ * nv_tx_timeout: dev->tx_timeout function
+ * Called with netif_tx_lock held.
+ */
+static void nv_tx_timeout(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ u32 status;
+ union ring_type put_tx;
+ int saved_tx_limit;
+ int i;
+
+ if (np->msi_flags & NV_MSI_X_ENABLED)
+ status = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
+ else
+ status = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
+
+ netdev_info(dev, "Got tx_timeout. irq: %08x\n", status);
+
+ netdev_info(dev, "Ring at %lx\n", (unsigned long)np->ring_addr);
+ netdev_info(dev, "Dumping tx registers\n");
+ for (i = 0; i <= np->register_size; i += 32) {
+ netdev_info(dev,
+ "%3x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
+ i,
+ readl(base + i + 0), readl(base + i + 4),
+ readl(base + i + 8), readl(base + i + 12),
+ readl(base + i + 16), readl(base + i + 20),
+ readl(base + i + 24), readl(base + i + 28));
+ }
+ netdev_info(dev, "Dumping tx ring\n");
+ for (i = 0; i < np->tx_ring_size; i += 4) {
+ if (!nv_optimized(np)) {
+ netdev_info(dev,
+ "%03x: %08x %08x // %08x %08x // %08x %08x // %08x %08x\n",
+ i,
+ le32_to_cpu(np->tx_ring.orig[i].buf),
+ le32_to_cpu(np->tx_ring.orig[i].flaglen),
+ le32_to_cpu(np->tx_ring.orig[i+1].buf),
+ le32_to_cpu(np->tx_ring.orig[i+1].flaglen),
+ le32_to_cpu(np->tx_ring.orig[i+2].buf),
+ le32_to_cpu(np->tx_ring.orig[i+2].flaglen),
+ le32_to_cpu(np->tx_ring.orig[i+3].buf),
+ le32_to_cpu(np->tx_ring.orig[i+3].flaglen));
+ } else {
+ netdev_info(dev,
+ "%03x: %08x %08x %08x // %08x %08x %08x // %08x %08x %08x // %08x %08x %08x\n",
+ i,
+ le32_to_cpu(np->tx_ring.ex[i].bufhigh),
+ le32_to_cpu(np->tx_ring.ex[i].buflow),
+ le32_to_cpu(np->tx_ring.ex[i].flaglen),
+ le32_to_cpu(np->tx_ring.ex[i+1].bufhigh),
+ le32_to_cpu(np->tx_ring.ex[i+1].buflow),
+ le32_to_cpu(np->tx_ring.ex[i+1].flaglen),
+ le32_to_cpu(np->tx_ring.ex[i+2].bufhigh),
+ le32_to_cpu(np->tx_ring.ex[i+2].buflow),
+ le32_to_cpu(np->tx_ring.ex[i+2].flaglen),
+ le32_to_cpu(np->tx_ring.ex[i+3].bufhigh),
+ le32_to_cpu(np->tx_ring.ex[i+3].buflow),
+ le32_to_cpu(np->tx_ring.ex[i+3].flaglen));
+ }
+ }
+
+ spin_lock_irq(&np->lock);
+
+ /* 1) stop tx engine */
+ nv_stop_tx(dev);
+
+ /* 2) complete any outstanding tx and do not give HW any limited tx pkts */
+ saved_tx_limit = np->tx_limit;
+ np->tx_limit = 0; /* prevent giving HW any limited pkts */
+ np->tx_stop = 0; /* prevent waking tx queue */
+ if (!nv_optimized(np))
+ nv_tx_done(dev, np->tx_ring_size);
+ else
+ nv_tx_done_optimized(dev, np->tx_ring_size);
+
+ /* save current HW position */
+ if (np->tx_change_owner)
+ put_tx.ex = np->tx_change_owner->first_tx_desc;
+ else
+ put_tx = np->put_tx;
+
+ /* 3) clear all tx state */
+ nv_drain_tx(dev);
+ nv_init_tx(dev);
+
+ /* 4) restore state to current HW position */
+ np->get_tx = np->put_tx = put_tx;
+ np->tx_limit = saved_tx_limit;
+
+ /* 5) restart tx engine */
+ nv_start_tx(dev);
+ netif_wake_queue(dev);
+ spin_unlock_irq(&np->lock);
+}
+
+/*
+ * Called when the nic notices a mismatch between the actual data len on the
+ * wire and the len indicated in the 802 header
+ */
+static int nv_getlen(struct net_device *dev, void *packet, int datalen)
+{
+ int hdrlen; /* length of the 802 header */
+ int protolen; /* length as stored in the proto field */
+
+ /* 1) calculate len according to header */
+ if (((struct vlan_ethhdr *)packet)->h_vlan_proto == htons(ETH_P_8021Q)) {
+ protolen = ntohs(((struct vlan_ethhdr *)packet)->h_vlan_encapsulated_proto);
+ hdrlen = VLAN_HLEN;
+ } else {
+ protolen = ntohs(((struct ethhdr *)packet)->h_proto);
+ hdrlen = ETH_HLEN;
+ }
+ if (protolen > ETH_DATA_LEN)
+ return datalen; /* Value in proto field not a len, no checks possible */
+
+ protolen += hdrlen;
+ /* consistency checks: */
+ if (datalen > ETH_ZLEN) {
+ if (datalen >= protolen) {
+ /* more data on wire than in 802 header, trim of
+ * additional data.
+ */
+ return protolen;
+ } else {
+ /* less data on wire than mentioned in header.
+ * Discard the packet.
+ */
+ return -1;
+ }
+ } else {
+ /* short packet. Accept only if 802 values are also short */
+ if (protolen > ETH_ZLEN) {
+ return -1;
+ }
+ return datalen;
+ }
+}
+
+static int nv_rx_process(struct net_device *dev, int limit)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u32 flags;
+ int rx_work = 0;
+ struct sk_buff *skb;
+ int len;
+
+ while ((np->get_rx.orig != np->put_rx.orig) &&
+ !((flags = le32_to_cpu(np->get_rx.orig->flaglen)) & NV_RX_AVAIL) &&
+ (rx_work < limit)) {
+
+ /*
+ * the packet is for us - immediately tear down the pci mapping.
+ * TODO: check if a prefetch of the first cacheline improves
+ * the performance.
+ */
+ pci_unmap_single(np->pci_dev, np->get_rx_ctx->dma,
+ np->get_rx_ctx->dma_len,
+ PCI_DMA_FROMDEVICE);
+ skb = np->get_rx_ctx->skb;
+ np->get_rx_ctx->skb = NULL;
+
+ /* look at what we actually got: */
+ if (np->desc_ver == DESC_VER_1) {
+ if (likely(flags & NV_RX_DESCRIPTORVALID)) {
+ len = flags & LEN_MASK_V1;
+ if (unlikely(flags & NV_RX_ERROR)) {
+ if ((flags & NV_RX_ERROR_MASK) == NV_RX_ERROR4) {
+ len = nv_getlen(dev, skb->data, len);
+ if (len < 0) {
+ dev->stats.rx_errors++;
+ dev_kfree_skb(skb);
+ goto next_pkt;
+ }
+ }
+ /* framing errors are soft errors */
+ else if ((flags & NV_RX_ERROR_MASK) == NV_RX_FRAMINGERR) {
+ if (flags & NV_RX_SUBSTRACT1)
+ len--;
+ }
+ /* the rest are hard errors */
+ else {
+ if (flags & NV_RX_MISSEDFRAME)
+ dev->stats.rx_missed_errors++;
+ if (flags & NV_RX_CRCERR)
+ dev->stats.rx_crc_errors++;
+ if (flags & NV_RX_OVERFLOW)
+ dev->stats.rx_over_errors++;
+ dev->stats.rx_errors++;
+ dev_kfree_skb(skb);
+ goto next_pkt;
+ }
+ }
+ } else {
+ dev_kfree_skb(skb);
+ goto next_pkt;
+ }
+ } else {
+ if (likely(flags & NV_RX2_DESCRIPTORVALID)) {
+ len = flags & LEN_MASK_V2;
+ if (unlikely(flags & NV_RX2_ERROR)) {
+ if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_ERROR4) {
+ len = nv_getlen(dev, skb->data, len);
+ if (len < 0) {
+ dev->stats.rx_errors++;
+ dev_kfree_skb(skb);
+ goto next_pkt;
+ }
+ }
+ /* framing errors are soft errors */
+ else if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_FRAMINGERR) {
+ if (flags & NV_RX2_SUBSTRACT1)
+ len--;
+ }
+ /* the rest are hard errors */
+ else {
+ if (flags & NV_RX2_CRCERR)
+ dev->stats.rx_crc_errors++;
+ if (flags & NV_RX2_OVERFLOW)
+ dev->stats.rx_over_errors++;
+ dev->stats.rx_errors++;
+ dev_kfree_skb(skb);
+ goto next_pkt;
+ }
+ }
+ if (((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_TCP) || /*ip and tcp */
+ ((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_UDP)) /*ip and udp */
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ } else {
+ dev_kfree_skb(skb);
+ goto next_pkt;
+ }
+ }
+ /* got a valid packet - forward it to the network core */
+ skb_put(skb, len);
+ skb->protocol = eth_type_trans(skb, dev);
+ napi_gro_receive(&np->napi, skb);
+ dev->stats.rx_packets++;
+ dev->stats.rx_bytes += len;
+next_pkt:
+ if (unlikely(np->get_rx.orig++ == np->last_rx.orig))
+ np->get_rx.orig = np->first_rx.orig;
+ if (unlikely(np->get_rx_ctx++ == np->last_rx_ctx))
+ np->get_rx_ctx = np->first_rx_ctx;
+
+ rx_work++;
+ }
+
+ return rx_work;
+}
+
+static int nv_rx_process_optimized(struct net_device *dev, int limit)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u32 flags;
+ u32 vlanflags = 0;
+ int rx_work = 0;
+ struct sk_buff *skb;
+ int len;
+
+ while ((np->get_rx.ex != np->put_rx.ex) &&
+ !((flags = le32_to_cpu(np->get_rx.ex->flaglen)) & NV_RX2_AVAIL) &&
+ (rx_work < limit)) {
+
+ /*
+ * the packet is for us - immediately tear down the pci mapping.
+ * TODO: check if a prefetch of the first cacheline improves
+ * the performance.
+ */
+ pci_unmap_single(np->pci_dev, np->get_rx_ctx->dma,
+ np->get_rx_ctx->dma_len,
+ PCI_DMA_FROMDEVICE);
+ skb = np->get_rx_ctx->skb;
+ np->get_rx_ctx->skb = NULL;
+
+ /* look at what we actually got: */
+ if (likely(flags & NV_RX2_DESCRIPTORVALID)) {
+ len = flags & LEN_MASK_V2;
+ if (unlikely(flags & NV_RX2_ERROR)) {
+ if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_ERROR4) {
+ len = nv_getlen(dev, skb->data, len);
+ if (len < 0) {
+ dev_kfree_skb(skb);
+ goto next_pkt;
+ }
+ }
+ /* framing errors are soft errors */
+ else if ((flags & NV_RX2_ERROR_MASK) == NV_RX2_FRAMINGERR) {
+ if (flags & NV_RX2_SUBSTRACT1)
+ len--;
+ }
+ /* the rest are hard errors */
+ else {
+ dev_kfree_skb(skb);
+ goto next_pkt;
+ }
+ }
+
+ if (((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_TCP) || /*ip and tcp */
+ ((flags & NV_RX2_CHECKSUMMASK) == NV_RX2_CHECKSUM_IP_UDP)) /*ip and udp */
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+
+ /* got a valid packet - forward it to the network core */
+ skb_put(skb, len);
+ skb->protocol = eth_type_trans(skb, dev);
+ prefetch(skb->data);
+
+ vlanflags = le32_to_cpu(np->get_rx.ex->buflow);
+
+ /*
+ * There's need to check for NETIF_F_HW_VLAN_RX here.
+ * Even if vlan rx accel is disabled,
+ * NV_RX3_VLAN_TAG_PRESENT is pseudo randomly set.
+ */
+ if (dev->features & NETIF_F_HW_VLAN_RX &&
+ vlanflags & NV_RX3_VLAN_TAG_PRESENT) {
+ u16 vid = vlanflags & NV_RX3_VLAN_TAG_MASK;
+
+ __vlan_hwaccel_put_tag(skb, vid);
+ }
+ napi_gro_receive(&np->napi, skb);
+
+ dev->stats.rx_packets++;
+ dev->stats.rx_bytes += len;
+ } else {
+ dev_kfree_skb(skb);
+ }
+next_pkt:
+ if (unlikely(np->get_rx.ex++ == np->last_rx.ex))
+ np->get_rx.ex = np->first_rx.ex;
+ if (unlikely(np->get_rx_ctx++ == np->last_rx_ctx))
+ np->get_rx_ctx = np->first_rx_ctx;
+
+ rx_work++;
+ }
+
+ return rx_work;
+}
+
+static void set_bufsize(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+
+ if (dev->mtu <= ETH_DATA_LEN)
+ np->rx_buf_sz = ETH_DATA_LEN + NV_RX_HEADERS;
+ else
+ np->rx_buf_sz = dev->mtu + NV_RX_HEADERS;
+}
+
+/*
+ * nv_change_mtu: dev->change_mtu function
+ * Called with dev_base_lock held for read.
+ */
+static int nv_change_mtu(struct net_device *dev, int new_mtu)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ int old_mtu;
+
+ if (new_mtu < 64 || new_mtu > np->pkt_limit)
+ return -EINVAL;
+
+ old_mtu = dev->mtu;
+ dev->mtu = new_mtu;
+
+ /* return early if the buffer sizes will not change */
+ if (old_mtu <= ETH_DATA_LEN && new_mtu <= ETH_DATA_LEN)
+ return 0;
+ if (old_mtu == new_mtu)
+ return 0;
+
+ /* synchronized against open : rtnl_lock() held by caller */
+ if (netif_running(dev)) {
+ u8 __iomem *base = get_hwbase(dev);
+ /*
+ * It seems that the nic preloads valid ring entries into an
+ * internal buffer. The procedure for flushing everything is
+ * guessed, there is probably a simpler approach.
+ * Changing the MTU is a rare event, it shouldn't matter.
+ */
+ nv_disable_irq(dev);
+ nv_napi_disable(dev);
+ netif_tx_lock_bh(dev);
+ netif_addr_lock(dev);
+ spin_lock(&np->lock);
+ /* stop engines */
+ nv_stop_rxtx(dev);
+ nv_txrx_reset(dev);
+ /* drain rx queue */
+ nv_drain_rxtx(dev);
+ /* reinit driver view of the rx queue */
+ set_bufsize(dev);
+ if (nv_init_ring(dev)) {
+ if (!np->in_shutdown)
+ mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
+ }
+ /* reinit nic view of the rx queue */
+ writel(np->rx_buf_sz, base + NvRegOffloadConfig);
+ setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
+ writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
+ base + NvRegRingSizes);
+ pci_push(base);
+ writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
+ pci_push(base);
+
+ /* restart rx engine */
+ nv_start_rxtx(dev);
+ spin_unlock(&np->lock);
+ netif_addr_unlock(dev);
+ netif_tx_unlock_bh(dev);
+ nv_napi_enable(dev);
+ nv_enable_irq(dev);
+ }
+ return 0;
+}
+
+static void nv_copy_mac_to_hw(struct net_device *dev)
+{
+ u8 __iomem *base = get_hwbase(dev);
+ u32 mac[2];
+
+ mac[0] = (dev->dev_addr[0] << 0) + (dev->dev_addr[1] << 8) +
+ (dev->dev_addr[2] << 16) + (dev->dev_addr[3] << 24);
+ mac[1] = (dev->dev_addr[4] << 0) + (dev->dev_addr[5] << 8);
+
+ writel(mac[0], base + NvRegMacAddrA);
+ writel(mac[1], base + NvRegMacAddrB);
+}
+
+/*
+ * nv_set_mac_address: dev->set_mac_address function
+ * Called with rtnl_lock() held.
+ */
+static int nv_set_mac_address(struct net_device *dev, void *addr)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ struct sockaddr *macaddr = (struct sockaddr *)addr;
+
+ if (!is_valid_ether_addr(macaddr->sa_data))
+ return -EADDRNOTAVAIL;
+
+ /* synchronized against open : rtnl_lock() held by caller */
+ memcpy(dev->dev_addr, macaddr->sa_data, ETH_ALEN);
+
+ if (netif_running(dev)) {
+ netif_tx_lock_bh(dev);
+ netif_addr_lock(dev);
+ spin_lock_irq(&np->lock);
+
+ /* stop rx engine */
+ nv_stop_rx(dev);
+
+ /* set mac address */
+ nv_copy_mac_to_hw(dev);
+
+ /* restart rx engine */
+ nv_start_rx(dev);
+ spin_unlock_irq(&np->lock);
+ netif_addr_unlock(dev);
+ netif_tx_unlock_bh(dev);
+ } else {
+ nv_copy_mac_to_hw(dev);
+ }
+ return 0;
+}
+
+/*
+ * nv_set_multicast: dev->set_multicast function
+ * Called with netif_tx_lock held.
+ */
+static void nv_set_multicast(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ u32 addr[2];
+ u32 mask[2];
+ u32 pff = readl(base + NvRegPacketFilterFlags) & NVREG_PFF_PAUSE_RX;
+
+ memset(addr, 0, sizeof(addr));
+ memset(mask, 0, sizeof(mask));
+
+ if (dev->flags & IFF_PROMISC) {
+ pff |= NVREG_PFF_PROMISC;
+ } else {
+ pff |= NVREG_PFF_MYADDR;
+
+ if (dev->flags & IFF_ALLMULTI || !netdev_mc_empty(dev)) {
+ u32 alwaysOff[2];
+ u32 alwaysOn[2];
+
+ alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0xffffffff;
+ if (dev->flags & IFF_ALLMULTI) {
+ alwaysOn[0] = alwaysOn[1] = alwaysOff[0] = alwaysOff[1] = 0;
+ } else {
+ struct netdev_hw_addr *ha;
+
+ netdev_for_each_mc_addr(ha, dev) {
+ unsigned char *addr = ha->addr;
+ u32 a, b;
+
+ a = le32_to_cpu(*(__le32 *) addr);
+ b = le16_to_cpu(*(__le16 *) (&addr[4]));
+ alwaysOn[0] &= a;
+ alwaysOff[0] &= ~a;
+ alwaysOn[1] &= b;
+ alwaysOff[1] &= ~b;
+ }
+ }
+ addr[0] = alwaysOn[0];
+ addr[1] = alwaysOn[1];
+ mask[0] = alwaysOn[0] | alwaysOff[0];
+ mask[1] = alwaysOn[1] | alwaysOff[1];
+ } else {
+ mask[0] = NVREG_MCASTMASKA_NONE;
+ mask[1] = NVREG_MCASTMASKB_NONE;
+ }
+ }
+ addr[0] |= NVREG_MCASTADDRA_FORCE;
+ pff |= NVREG_PFF_ALWAYS;
+ spin_lock_irq(&np->lock);
+ nv_stop_rx(dev);
+ writel(addr[0], base + NvRegMulticastAddrA);
+ writel(addr[1], base + NvRegMulticastAddrB);
+ writel(mask[0], base + NvRegMulticastMaskA);
+ writel(mask[1], base + NvRegMulticastMaskB);
+ writel(pff, base + NvRegPacketFilterFlags);
+ nv_start_rx(dev);
+ spin_unlock_irq(&np->lock);
+}
+
+static void nv_update_pause(struct net_device *dev, u32 pause_flags)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+
+ np->pause_flags &= ~(NV_PAUSEFRAME_TX_ENABLE | NV_PAUSEFRAME_RX_ENABLE);
+
+ if (np->pause_flags & NV_PAUSEFRAME_RX_CAPABLE) {
+ u32 pff = readl(base + NvRegPacketFilterFlags) & ~NVREG_PFF_PAUSE_RX;
+ if (pause_flags & NV_PAUSEFRAME_RX_ENABLE) {
+ writel(pff|NVREG_PFF_PAUSE_RX, base + NvRegPacketFilterFlags);
+ np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
+ } else {
+ writel(pff, base + NvRegPacketFilterFlags);
+ }
+ }
+ if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE) {
+ u32 regmisc = readl(base + NvRegMisc1) & ~NVREG_MISC1_PAUSE_TX;
+ if (pause_flags & NV_PAUSEFRAME_TX_ENABLE) {
+ u32 pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V1;
+ if (np->driver_data & DEV_HAS_PAUSEFRAME_TX_V2)
+ pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V2;
+ if (np->driver_data & DEV_HAS_PAUSEFRAME_TX_V3) {
+ pause_enable = NVREG_TX_PAUSEFRAME_ENABLE_V3;
+ /* limit the number of tx pause frames to a default of 8 */
+ writel(readl(base + NvRegTxPauseFrameLimit)|NVREG_TX_PAUSEFRAMELIMIT_ENABLE, base + NvRegTxPauseFrameLimit);
+ }
+ writel(pause_enable, base + NvRegTxPauseFrame);
+ writel(regmisc|NVREG_MISC1_PAUSE_TX, base + NvRegMisc1);
+ np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
+ } else {
+ writel(NVREG_TX_PAUSEFRAME_DISABLE, base + NvRegTxPauseFrame);
+ writel(regmisc, base + NvRegMisc1);
+ }
+ }
+}
+
+/**
+ * nv_update_linkspeed: Setup the MAC according to the link partner
+ * @dev: Network device to be configured
+ *
+ * The function queries the PHY and checks if there is a link partner.
+ * If yes, then it sets up the MAC accordingly. Otherwise, the MAC is
+ * set to 10 MBit HD.
+ *
+ * The function returns 0 if there is no link partner and 1 if there is
+ * a good link partner.
+ */
+static int nv_update_linkspeed(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ int adv = 0;
+ int lpa = 0;
+ int adv_lpa, adv_pause, lpa_pause;
+ int newls = np->linkspeed;
+ int newdup = np->duplex;
+ int mii_status;
+ int retval = 0;
+ u32 control_1000, status_1000, phyreg, pause_flags, txreg;
+ u32 txrxFlags = 0;
+ u32 phy_exp;
+
+ /* BMSR_LSTATUS is latched, read it twice:
+ * we want the current value.
+ */
+ mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
+ mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
+
+ if (!(mii_status & BMSR_LSTATUS)) {
+ newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
+ newdup = 0;
+ retval = 0;
+ goto set_speed;
+ }
+
+ if (np->autoneg == 0) {
+ if (np->fixed_mode & LPA_100FULL) {
+ newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
+ newdup = 1;
+ } else if (np->fixed_mode & LPA_100HALF) {
+ newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
+ newdup = 0;
+ } else if (np->fixed_mode & LPA_10FULL) {
+ newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
+ newdup = 1;
+ } else {
+ newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
+ newdup = 0;
+ }
+ retval = 1;
+ goto set_speed;
+ }
+ /* check auto negotiation is complete */
+ if (!(mii_status & BMSR_ANEGCOMPLETE)) {
+ /* still in autonegotiation - configure nic for 10 MBit HD and wait. */
+ newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
+ newdup = 0;
+ retval = 0;
+ goto set_speed;
+ }
+
+ adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
+ lpa = mii_rw(dev, np->phyaddr, MII_LPA, MII_READ);
+
+ retval = 1;
+ if (np->gigabit == PHY_GIGABIT) {
+ control_1000 = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
+ status_1000 = mii_rw(dev, np->phyaddr, MII_STAT1000, MII_READ);
+
+ if ((control_1000 & ADVERTISE_1000FULL) &&
+ (status_1000 & LPA_1000FULL)) {
+ newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_1000;
+ newdup = 1;
+ goto set_speed;
+ }
+ }
+
+ /* FIXME: handle parallel detection properly */
+ adv_lpa = lpa & adv;
+ if (adv_lpa & LPA_100FULL) {
+ newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
+ newdup = 1;
+ } else if (adv_lpa & LPA_100HALF) {
+ newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_100;
+ newdup = 0;
+ } else if (adv_lpa & LPA_10FULL) {
+ newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
+ newdup = 1;
+ } else if (adv_lpa & LPA_10HALF) {
+ newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
+ newdup = 0;
+ } else {
+ newls = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
+ newdup = 0;
+ }
+
+set_speed:
+ if (np->duplex == newdup && np->linkspeed == newls)
+ return retval;
+
+ np->duplex = newdup;
+ np->linkspeed = newls;
+
+ /* The transmitter and receiver must be restarted for safe update */
+ if (readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_START) {
+ txrxFlags |= NV_RESTART_TX;
+ nv_stop_tx(dev);
+ }
+ if (readl(base + NvRegReceiverControl) & NVREG_RCVCTL_START) {
+ txrxFlags |= NV_RESTART_RX;
+ nv_stop_rx(dev);
+ }
+
+ if (np->gigabit == PHY_GIGABIT) {
+ phyreg = readl(base + NvRegSlotTime);
+ phyreg &= ~(0x3FF00);
+ if (((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_10) ||
+ ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_100))
+ phyreg |= NVREG_SLOTTIME_10_100_FULL;
+ else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_1000)
+ phyreg |= NVREG_SLOTTIME_1000_FULL;
+ writel(phyreg, base + NvRegSlotTime);
+ }
+
+ phyreg = readl(base + NvRegPhyInterface);
+ phyreg &= ~(PHY_HALF|PHY_100|PHY_1000);
+ if (np->duplex == 0)
+ phyreg |= PHY_HALF;
+ if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_100)
+ phyreg |= PHY_100;
+ else if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
+ phyreg |= PHY_1000;
+ writel(phyreg, base + NvRegPhyInterface);
+
+ phy_exp = mii_rw(dev, np->phyaddr, MII_EXPANSION, MII_READ) & EXPANSION_NWAY; /* autoneg capable */
+ if (phyreg & PHY_RGMII) {
+ if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000) {
+ txreg = NVREG_TX_DEFERRAL_RGMII_1000;
+ } else {
+ if (!phy_exp && !np->duplex && (np->driver_data & DEV_HAS_COLLISION_FIX)) {
+ if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_10)
+ txreg = NVREG_TX_DEFERRAL_RGMII_STRETCH_10;
+ else
+ txreg = NVREG_TX_DEFERRAL_RGMII_STRETCH_100;
+ } else {
+ txreg = NVREG_TX_DEFERRAL_RGMII_10_100;
+ }
+ }
+ } else {
+ if (!phy_exp && !np->duplex && (np->driver_data & DEV_HAS_COLLISION_FIX))
+ txreg = NVREG_TX_DEFERRAL_MII_STRETCH;
+ else
+ txreg = NVREG_TX_DEFERRAL_DEFAULT;
+ }
+ writel(txreg, base + NvRegTxDeferral);
+
+ if (np->desc_ver == DESC_VER_1) {
+ txreg = NVREG_TX_WM_DESC1_DEFAULT;
+ } else {
+ if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_1000)
+ txreg = NVREG_TX_WM_DESC2_3_1000;
+ else
+ txreg = NVREG_TX_WM_DESC2_3_DEFAULT;
+ }
+ writel(txreg, base + NvRegTxWatermark);
+
+ writel(NVREG_MISC1_FORCE | (np->duplex ? 0 : NVREG_MISC1_HD),
+ base + NvRegMisc1);
+ pci_push(base);
+ writel(np->linkspeed, base + NvRegLinkSpeed);
+ pci_push(base);
+
+ pause_flags = 0;
+ /* setup pause frame */
+ if (np->duplex != 0) {
+ if (np->autoneg && np->pause_flags & NV_PAUSEFRAME_AUTONEG) {
+ adv_pause = adv & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
+ lpa_pause = lpa & (LPA_PAUSE_CAP | LPA_PAUSE_ASYM);
+
+ switch (adv_pause) {
+ case ADVERTISE_PAUSE_CAP:
+ if (lpa_pause & LPA_PAUSE_CAP) {
+ pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
+ if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
+ pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
+ }
+ break;
+ case ADVERTISE_PAUSE_ASYM:
+ if (lpa_pause == (LPA_PAUSE_CAP | LPA_PAUSE_ASYM))
+ pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
+ break;
+ case ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM:
+ if (lpa_pause & LPA_PAUSE_CAP) {
+ pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
+ if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
+ pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
+ }
+ if (lpa_pause == LPA_PAUSE_ASYM)
+ pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
+ break;
+ }
+ } else {
+ pause_flags = np->pause_flags;
+ }
+ }
+ nv_update_pause(dev, pause_flags);
+
+ if (txrxFlags & NV_RESTART_TX)
+ nv_start_tx(dev);
+ if (txrxFlags & NV_RESTART_RX)
+ nv_start_rx(dev);
+
+ return retval;
+}
+
+static void nv_linkchange(struct net_device *dev)
+{
+ if (nv_update_linkspeed(dev)) {
+ if (!netif_carrier_ok(dev)) {
+ netif_carrier_on(dev);
+ netdev_info(dev, "link up\n");
+ nv_txrx_gate(dev, false);
+ nv_start_rx(dev);
+ }
+ } else {
+ if (netif_carrier_ok(dev)) {
+ netif_carrier_off(dev);
+ netdev_info(dev, "link down\n");
+ nv_txrx_gate(dev, true);
+ nv_stop_rx(dev);
+ }
+ }
+}
+
+static void nv_link_irq(struct net_device *dev)
+{
+ u8 __iomem *base = get_hwbase(dev);
+ u32 miistat;
+
+ miistat = readl(base + NvRegMIIStatus);
+ writel(NVREG_MIISTAT_LINKCHANGE, base + NvRegMIIStatus);
+
+ if (miistat & (NVREG_MIISTAT_LINKCHANGE))
+ nv_linkchange(dev);
+}
+
+static void nv_msi_workaround(struct fe_priv *np)
+{
+
+ /* Need to toggle the msi irq mask within the ethernet device,
+ * otherwise, future interrupts will not be detected.
+ */
+ if (np->msi_flags & NV_MSI_ENABLED) {
+ u8 __iomem *base = np->base;
+
+ writel(0, base + NvRegMSIIrqMask);
+ writel(NVREG_MSI_VECTOR_0_ENABLED, base + NvRegMSIIrqMask);
+ }
+}
+
+static inline int nv_change_interrupt_mode(struct net_device *dev, int total_work)
+{
+ struct fe_priv *np = netdev_priv(dev);
+
+ if (optimization_mode == NV_OPTIMIZATION_MODE_DYNAMIC) {
+ if (total_work > NV_DYNAMIC_THRESHOLD) {
+ /* transition to poll based interrupts */
+ np->quiet_count = 0;
+ if (np->irqmask != NVREG_IRQMASK_CPU) {
+ np->irqmask = NVREG_IRQMASK_CPU;
+ return 1;
+ }
+ } else {
+ if (np->quiet_count < NV_DYNAMIC_MAX_QUIET_COUNT) {
+ np->quiet_count++;
+ } else {
+ /* reached a period of low activity, switch
+ to per tx/rx packet interrupts */
+ if (np->irqmask != NVREG_IRQMASK_THROUGHPUT) {
+ np->irqmask = NVREG_IRQMASK_THROUGHPUT;
+ return 1;
+ }
+ }
+ }
+ }
+ return 0;
+}
+
+static irqreturn_t nv_nic_irq(int foo, void *data)
+{
+ struct net_device *dev = (struct net_device *) data;
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+
+ if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
+ np->events = readl(base + NvRegIrqStatus);
+ writel(np->events, base + NvRegIrqStatus);
+ } else {
+ np->events = readl(base + NvRegMSIXIrqStatus);
+ writel(np->events, base + NvRegMSIXIrqStatus);
+ }
+ if (!(np->events & np->irqmask))
+ return IRQ_NONE;
+
+ nv_msi_workaround(np);
+
+ if (napi_schedule_prep(&np->napi)) {
+ /*
+ * Disable further irq's (msix not enabled with napi)
+ */
+ writel(0, base + NvRegIrqMask);
+ __napi_schedule(&np->napi);
+ }
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * All _optimized functions are used to help increase performance
+ * (reduce CPU and increase throughput). They use descripter version 3,
+ * compiler directives, and reduce memory accesses.
+ */
+static irqreturn_t nv_nic_irq_optimized(int foo, void *data)
+{
+ struct net_device *dev = (struct net_device *) data;
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+
+ if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
+ np->events = readl(base + NvRegIrqStatus);
+ writel(np->events, base + NvRegIrqStatus);
+ } else {
+ np->events = readl(base + NvRegMSIXIrqStatus);
+ writel(np->events, base + NvRegMSIXIrqStatus);
+ }
+ if (!(np->events & np->irqmask))
+ return IRQ_NONE;
+
+ nv_msi_workaround(np);
+
+ if (napi_schedule_prep(&np->napi)) {
+ /*
+ * Disable further irq's (msix not enabled with napi)
+ */
+ writel(0, base + NvRegIrqMask);
+ __napi_schedule(&np->napi);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t nv_nic_irq_tx(int foo, void *data)
+{
+ struct net_device *dev = (struct net_device *) data;
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ u32 events;
+ int i;
+ unsigned long flags;
+
+ for (i = 0;; i++) {
+ events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_TX_ALL;
+ writel(NVREG_IRQ_TX_ALL, base + NvRegMSIXIrqStatus);
+ if (!(events & np->irqmask))
+ break;
+
+ spin_lock_irqsave(&np->lock, flags);
+ nv_tx_done_optimized(dev, TX_WORK_PER_LOOP);
+ spin_unlock_irqrestore(&np->lock, flags);
+
+ if (unlikely(i > max_interrupt_work)) {
+ spin_lock_irqsave(&np->lock, flags);
+ /* disable interrupts on the nic */
+ writel(NVREG_IRQ_TX_ALL, base + NvRegIrqMask);
+ pci_push(base);
+
+ if (!np->in_shutdown) {
+ np->nic_poll_irq |= NVREG_IRQ_TX_ALL;
+ mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
+ }
+ spin_unlock_irqrestore(&np->lock, flags);
+ netdev_dbg(dev, "%s: too many iterations (%d)\n",
+ __func__, i);
+ break;
+ }
+
+ }
+
+ return IRQ_RETVAL(i);
+}
+
+static int nv_napi_poll(struct napi_struct *napi, int budget)
+{
+ struct fe_priv *np = container_of(napi, struct fe_priv, napi);
+ struct net_device *dev = np->dev;
+ u8 __iomem *base = get_hwbase(dev);
+ unsigned long flags;
+ int retcode;
+ int rx_count, tx_work = 0, rx_work = 0;
+
+ do {
+ if (!nv_optimized(np)) {
+ spin_lock_irqsave(&np->lock, flags);
+ tx_work += nv_tx_done(dev, np->tx_ring_size);
+ spin_unlock_irqrestore(&np->lock, flags);
+
+ rx_count = nv_rx_process(dev, budget - rx_work);
+ retcode = nv_alloc_rx(dev);
+ } else {
+ spin_lock_irqsave(&np->lock, flags);
+ tx_work += nv_tx_done_optimized(dev, np->tx_ring_size);
+ spin_unlock_irqrestore(&np->lock, flags);
+
+ rx_count = nv_rx_process_optimized(dev,
+ budget - rx_work);
+ retcode = nv_alloc_rx_optimized(dev);
+ }
+ } while (retcode == 0 &&
+ rx_count > 0 && (rx_work += rx_count) < budget);
+
+ if (retcode) {
+ spin_lock_irqsave(&np->lock, flags);
+ if (!np->in_shutdown)
+ mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
+ spin_unlock_irqrestore(&np->lock, flags);
+ }
+
+ nv_change_interrupt_mode(dev, tx_work + rx_work);
+
+ if (unlikely(np->events & NVREG_IRQ_LINK)) {
+ spin_lock_irqsave(&np->lock, flags);
+ nv_link_irq(dev);
+ spin_unlock_irqrestore(&np->lock, flags);
+ }
+ if (unlikely(np->need_linktimer && time_after(jiffies, np->link_timeout))) {
+ spin_lock_irqsave(&np->lock, flags);
+ nv_linkchange(dev);
+ spin_unlock_irqrestore(&np->lock, flags);
+ np->link_timeout = jiffies + LINK_TIMEOUT;
+ }
+ if (unlikely(np->events & NVREG_IRQ_RECOVER_ERROR)) {
+ spin_lock_irqsave(&np->lock, flags);
+ if (!np->in_shutdown) {
+ np->nic_poll_irq = np->irqmask;
+ np->recover_error = 1;
+ mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
+ }
+ spin_unlock_irqrestore(&np->lock, flags);
+ napi_complete(napi);
+ return rx_work;
+ }
+
+ if (rx_work < budget) {
+ /* re-enable interrupts
+ (msix not enabled in napi) */
+ napi_complete(napi);
+
+ writel(np->irqmask, base + NvRegIrqMask);
+ }
+ return rx_work;
+}
+
+static irqreturn_t nv_nic_irq_rx(int foo, void *data)
+{
+ struct net_device *dev = (struct net_device *) data;
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ u32 events;
+ int i;
+ unsigned long flags;
+
+ for (i = 0;; i++) {
+ events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_RX_ALL;
+ writel(NVREG_IRQ_RX_ALL, base + NvRegMSIXIrqStatus);
+ if (!(events & np->irqmask))
+ break;
+
+ if (nv_rx_process_optimized(dev, RX_WORK_PER_LOOP)) {
+ if (unlikely(nv_alloc_rx_optimized(dev))) {
+ spin_lock_irqsave(&np->lock, flags);
+ if (!np->in_shutdown)
+ mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
+ spin_unlock_irqrestore(&np->lock, flags);
+ }
+ }
+
+ if (unlikely(i > max_interrupt_work)) {
+ spin_lock_irqsave(&np->lock, flags);
+ /* disable interrupts on the nic */
+ writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask);
+ pci_push(base);
+
+ if (!np->in_shutdown) {
+ np->nic_poll_irq |= NVREG_IRQ_RX_ALL;
+ mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
+ }
+ spin_unlock_irqrestore(&np->lock, flags);
+ netdev_dbg(dev, "%s: too many iterations (%d)\n",
+ __func__, i);
+ break;
+ }
+ }
+
+ return IRQ_RETVAL(i);
+}
+
+static irqreturn_t nv_nic_irq_other(int foo, void *data)
+{
+ struct net_device *dev = (struct net_device *) data;
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ u32 events;
+ int i;
+ unsigned long flags;
+
+ for (i = 0;; i++) {
+ events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQ_OTHER;
+ writel(NVREG_IRQ_OTHER, base + NvRegMSIXIrqStatus);
+ if (!(events & np->irqmask))
+ break;
+
+ /* check tx in case we reached max loop limit in tx isr */
+ spin_lock_irqsave(&np->lock, flags);
+ nv_tx_done_optimized(dev, TX_WORK_PER_LOOP);
+ spin_unlock_irqrestore(&np->lock, flags);
+
+ if (events & NVREG_IRQ_LINK) {
+ spin_lock_irqsave(&np->lock, flags);
+ nv_link_irq(dev);
+ spin_unlock_irqrestore(&np->lock, flags);
+ }
+ if (np->need_linktimer && time_after(jiffies, np->link_timeout)) {
+ spin_lock_irqsave(&np->lock, flags);
+ nv_linkchange(dev);
+ spin_unlock_irqrestore(&np->lock, flags);
+ np->link_timeout = jiffies + LINK_TIMEOUT;
+ }
+ if (events & NVREG_IRQ_RECOVER_ERROR) {
+ spin_lock_irq(&np->lock);
+ /* disable interrupts on the nic */
+ writel(NVREG_IRQ_OTHER, base + NvRegIrqMask);
+ pci_push(base);
+
+ if (!np->in_shutdown) {
+ np->nic_poll_irq |= NVREG_IRQ_OTHER;
+ np->recover_error = 1;
+ mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
+ }
+ spin_unlock_irq(&np->lock);
+ break;
+ }
+ if (unlikely(i > max_interrupt_work)) {
+ spin_lock_irqsave(&np->lock, flags);
+ /* disable interrupts on the nic */
+ writel(NVREG_IRQ_OTHER, base + NvRegIrqMask);
+ pci_push(base);
+
+ if (!np->in_shutdown) {
+ np->nic_poll_irq |= NVREG_IRQ_OTHER;
+ mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
+ }
+ spin_unlock_irqrestore(&np->lock, flags);
+ netdev_dbg(dev, "%s: too many iterations (%d)\n",
+ __func__, i);
+ break;
+ }
+
+ }
+
+ return IRQ_RETVAL(i);
+}
+
+static irqreturn_t nv_nic_irq_test(int foo, void *data)
+{
+ struct net_device *dev = (struct net_device *) data;
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ u32 events;
+
+ if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
+ events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
+ writel(NVREG_IRQ_TIMER, base + NvRegIrqStatus);
+ } else {
+ events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
+ writel(NVREG_IRQ_TIMER, base + NvRegMSIXIrqStatus);
+ }
+ pci_push(base);
+ if (!(events & NVREG_IRQ_TIMER))
+ return IRQ_RETVAL(0);
+
+ nv_msi_workaround(np);
+
+ spin_lock(&np->lock);
+ np->intr_test = 1;
+ spin_unlock(&np->lock);
+
+ return IRQ_RETVAL(1);
+}
+
+static void set_msix_vector_map(struct net_device *dev, u32 vector, u32 irqmask)
+{
+ u8 __iomem *base = get_hwbase(dev);
+ int i;
+ u32 msixmap = 0;
+
+ /* Each interrupt bit can be mapped to a MSIX vector (4 bits).
+ * MSIXMap0 represents the first 8 interrupts and MSIXMap1 represents
+ * the remaining 8 interrupts.
+ */
+ for (i = 0; i < 8; i++) {
+ if ((irqmask >> i) & 0x1)
+ msixmap |= vector << (i << 2);
+ }
+ writel(readl(base + NvRegMSIXMap0) | msixmap, base + NvRegMSIXMap0);
+
+ msixmap = 0;
+ for (i = 0; i < 8; i++) {
+ if ((irqmask >> (i + 8)) & 0x1)
+ msixmap |= vector << (i << 2);
+ }
+ writel(readl(base + NvRegMSIXMap1) | msixmap, base + NvRegMSIXMap1);
+}
+
+static int nv_request_irq(struct net_device *dev, int intr_test)
+{
+ struct fe_priv *np = get_nvpriv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ int ret = 1;
+ int i;
+ irqreturn_t (*handler)(int foo, void *data);
+
+ if (intr_test) {
+ handler = nv_nic_irq_test;
+ } else {
+ if (nv_optimized(np))
+ handler = nv_nic_irq_optimized;
+ else
+ handler = nv_nic_irq;
+ }
+
+ if (np->msi_flags & NV_MSI_X_CAPABLE) {
+ for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++)
+ np->msi_x_entry[i].entry = i;
+ ret = pci_enable_msix(np->pci_dev, np->msi_x_entry, (np->msi_flags & NV_MSI_X_VECTORS_MASK));
+ if (ret == 0) {
+ np->msi_flags |= NV_MSI_X_ENABLED;
+ if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT && !intr_test) {
+ /* Request irq for rx handling */
+ sprintf(np->name_rx, "%s-rx", dev->name);
+ if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector,
+ nv_nic_irq_rx, IRQF_SHARED, np->name_rx, dev) != 0) {
+ netdev_info(dev,
+ "request_irq failed for rx %d\n",
+ ret);
+ pci_disable_msix(np->pci_dev);
+ np->msi_flags &= ~NV_MSI_X_ENABLED;
+ goto out_err;
+ }
+ /* Request irq for tx handling */
+ sprintf(np->name_tx, "%s-tx", dev->name);
+ if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector,
+ nv_nic_irq_tx, IRQF_SHARED, np->name_tx, dev) != 0) {
+ netdev_info(dev,
+ "request_irq failed for tx %d\n",
+ ret);
+ pci_disable_msix(np->pci_dev);
+ np->msi_flags &= ~NV_MSI_X_ENABLED;
+ goto out_free_rx;
+ }
+ /* Request irq for link and timer handling */
+ sprintf(np->name_other, "%s-other", dev->name);
+ if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector,
+ nv_nic_irq_other, IRQF_SHARED, np->name_other, dev) != 0) {
+ netdev_info(dev,
+ "request_irq failed for link %d\n",
+ ret);
+ pci_disable_msix(np->pci_dev);
+ np->msi_flags &= ~NV_MSI_X_ENABLED;
+ goto out_free_tx;
+ }
+ /* map interrupts to their respective vector */
+ writel(0, base + NvRegMSIXMap0);
+ writel(0, base + NvRegMSIXMap1);
+ set_msix_vector_map(dev, NV_MSI_X_VECTOR_RX, NVREG_IRQ_RX_ALL);
+ set_msix_vector_map(dev, NV_MSI_X_VECTOR_TX, NVREG_IRQ_TX_ALL);
+ set_msix_vector_map(dev, NV_MSI_X_VECTOR_OTHER, NVREG_IRQ_OTHER);
+ } else {
+ /* Request irq for all interrupts */
+ if (request_irq(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector, handler, IRQF_SHARED, dev->name, dev) != 0) {
+ netdev_info(dev,
+ "request_irq failed %d\n",
+ ret);
+ pci_disable_msix(np->pci_dev);
+ np->msi_flags &= ~NV_MSI_X_ENABLED;
+ goto out_err;
+ }
+
+ /* map interrupts to vector 0 */
+ writel(0, base + NvRegMSIXMap0);
+ writel(0, base + NvRegMSIXMap1);
+ }
+ }
+ }
+ if (ret != 0 && np->msi_flags & NV_MSI_CAPABLE) {
+ ret = pci_enable_msi(np->pci_dev);
+ if (ret == 0) {
+ np->msi_flags |= NV_MSI_ENABLED;
+ dev->irq = np->pci_dev->irq;
+ if (request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev) != 0) {
+ netdev_info(dev, "request_irq failed %d\n",
+ ret);
+ pci_disable_msi(np->pci_dev);
+ np->msi_flags &= ~NV_MSI_ENABLED;
+ dev->irq = np->pci_dev->irq;
+ goto out_err;
+ }
+
+ /* map interrupts to vector 0 */
+ writel(0, base + NvRegMSIMap0);
+ writel(0, base + NvRegMSIMap1);
+ /* enable msi vector 0 */
+ writel(NVREG_MSI_VECTOR_0_ENABLED, base + NvRegMSIIrqMask);
+ }
+ }
+ if (ret != 0) {
+ if (request_irq(np->pci_dev->irq, handler, IRQF_SHARED, dev->name, dev) != 0)
+ goto out_err;
+
+ }
+
+ return 0;
+out_free_tx:
+ free_irq(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector, dev);
+out_free_rx:
+ free_irq(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector, dev);
+out_err:
+ return 1;
+}
+
+static void nv_free_irq(struct net_device *dev)
+{
+ struct fe_priv *np = get_nvpriv(dev);
+ int i;
+
+ if (np->msi_flags & NV_MSI_X_ENABLED) {
+ for (i = 0; i < (np->msi_flags & NV_MSI_X_VECTORS_MASK); i++)
+ free_irq(np->msi_x_entry[i].vector, dev);
+ pci_disable_msix(np->pci_dev);
+ np->msi_flags &= ~NV_MSI_X_ENABLED;
+ } else {
+ free_irq(np->pci_dev->irq, dev);
+ if (np->msi_flags & NV_MSI_ENABLED) {
+ pci_disable_msi(np->pci_dev);
+ np->msi_flags &= ~NV_MSI_ENABLED;
+ }
+ }
+}
+
+static void nv_do_nic_poll(unsigned long data)
+{
+ struct net_device *dev = (struct net_device *) data;
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ u32 mask = 0;
+
+ /*
+ * First disable irq(s) and then
+ * reenable interrupts on the nic, we have to do this before calling
+ * nv_nic_irq because that may decide to do otherwise
+ */
+
+ if (!using_multi_irqs(dev)) {
+ if (np->msi_flags & NV_MSI_X_ENABLED)
+ disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
+ else
+ disable_irq_lockdep(np->pci_dev->irq);
+ mask = np->irqmask;
+ } else {
+ if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
+ disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
+ mask |= NVREG_IRQ_RX_ALL;
+ }
+ if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
+ disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
+ mask |= NVREG_IRQ_TX_ALL;
+ }
+ if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
+ disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
+ mask |= NVREG_IRQ_OTHER;
+ }
+ }
+ /* disable_irq() contains synchronize_irq, thus no irq handler can run now */
+
+ if (np->recover_error) {
+ np->recover_error = 0;
+ netdev_info(dev, "MAC in recoverable error state\n");
+ if (netif_running(dev)) {
+ netif_tx_lock_bh(dev);
+ netif_addr_lock(dev);
+ spin_lock(&np->lock);
+ /* stop engines */
+ nv_stop_rxtx(dev);
+ if (np->driver_data & DEV_HAS_POWER_CNTRL)
+ nv_mac_reset(dev);
+ nv_txrx_reset(dev);
+ /* drain rx queue */
+ nv_drain_rxtx(dev);
+ /* reinit driver view of the rx queue */
+ set_bufsize(dev);
+ if (nv_init_ring(dev)) {
+ if (!np->in_shutdown)
+ mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
+ }
+ /* reinit nic view of the rx queue */
+ writel(np->rx_buf_sz, base + NvRegOffloadConfig);
+ setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
+ writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
+ base + NvRegRingSizes);
+ pci_push(base);
+ writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
+ pci_push(base);
+ /* clear interrupts */
+ if (!(np->msi_flags & NV_MSI_X_ENABLED))
+ writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
+ else
+ writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
+
+ /* restart rx engine */
+ nv_start_rxtx(dev);
+ spin_unlock(&np->lock);
+ netif_addr_unlock(dev);
+ netif_tx_unlock_bh(dev);
+ }
+ }
+
+ writel(mask, base + NvRegIrqMask);
+ pci_push(base);
+
+ if (!using_multi_irqs(dev)) {
+ np->nic_poll_irq = 0;
+ if (nv_optimized(np))
+ nv_nic_irq_optimized(0, dev);
+ else
+ nv_nic_irq(0, dev);
+ if (np->msi_flags & NV_MSI_X_ENABLED)
+ enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
+ else
+ enable_irq_lockdep(np->pci_dev->irq);
+ } else {
+ if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
+ np->nic_poll_irq &= ~NVREG_IRQ_RX_ALL;
+ nv_nic_irq_rx(0, dev);
+ enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
+ }
+ if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
+ np->nic_poll_irq &= ~NVREG_IRQ_TX_ALL;
+ nv_nic_irq_tx(0, dev);
+ enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
+ }
+ if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
+ np->nic_poll_irq &= ~NVREG_IRQ_OTHER;
+ nv_nic_irq_other(0, dev);
+ enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
+ }
+ }
+
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void nv_poll_controller(struct net_device *dev)
+{
+ nv_do_nic_poll((unsigned long) dev);
+}
+#endif
+
+static void nv_do_stats_poll(unsigned long data)
+{
+ struct net_device *dev = (struct net_device *) data;
+ struct fe_priv *np = netdev_priv(dev);
+
+ nv_get_hw_stats(dev);
+
+ if (!np->in_shutdown)
+ mod_timer(&np->stats_poll,
+ round_jiffies(jiffies + STATS_INTERVAL));
+}
+
+static void nv_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ strcpy(info->driver, DRV_NAME);
+ strcpy(info->version, FORCEDETH_VERSION);
+ strcpy(info->bus_info, pci_name(np->pci_dev));
+}
+
+static void nv_get_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ wolinfo->supported = WAKE_MAGIC;
+
+ spin_lock_irq(&np->lock);
+ if (np->wolenabled)
+ wolinfo->wolopts = WAKE_MAGIC;
+ spin_unlock_irq(&np->lock);
+}
+
+static int nv_set_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ u32 flags = 0;
+
+ if (wolinfo->wolopts == 0) {
+ np->wolenabled = 0;
+ } else if (wolinfo->wolopts & WAKE_MAGIC) {
+ np->wolenabled = 1;
+ flags = NVREG_WAKEUPFLAGS_ENABLE;
+ }
+ if (netif_running(dev)) {
+ spin_lock_irq(&np->lock);
+ writel(flags, base + NvRegWakeUpFlags);
+ spin_unlock_irq(&np->lock);
+ }
+ device_set_wakeup_enable(&np->pci_dev->dev, np->wolenabled);
+ return 0;
+}
+
+static int nv_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u32 speed;
+ int adv;
+
+ spin_lock_irq(&np->lock);
+ ecmd->port = PORT_MII;
+ if (!netif_running(dev)) {
+ /* We do not track link speed / duplex setting if the
+ * interface is disabled. Force a link check */
+ if (nv_update_linkspeed(dev)) {
+ if (!netif_carrier_ok(dev))
+ netif_carrier_on(dev);
+ } else {
+ if (netif_carrier_ok(dev))
+ netif_carrier_off(dev);
+ }
+ }
+
+ if (netif_carrier_ok(dev)) {
+ switch (np->linkspeed & (NVREG_LINKSPEED_MASK)) {
+ case NVREG_LINKSPEED_10:
+ speed = SPEED_10;
+ break;
+ case NVREG_LINKSPEED_100:
+ speed = SPEED_100;
+ break;
+ case NVREG_LINKSPEED_1000:
+ speed = SPEED_1000;
+ break;
+ default:
+ speed = -1;
+ break;
+ }
+ ecmd->duplex = DUPLEX_HALF;
+ if (np->duplex)
+ ecmd->duplex = DUPLEX_FULL;
+ } else {
+ speed = -1;
+ ecmd->duplex = -1;
+ }
+ ethtool_cmd_speed_set(ecmd, speed);
+ ecmd->autoneg = np->autoneg;
+
+ ecmd->advertising = ADVERTISED_MII;
+ if (np->autoneg) {
+ ecmd->advertising |= ADVERTISED_Autoneg;
+ adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
+ if (adv & ADVERTISE_10HALF)
+ ecmd->advertising |= ADVERTISED_10baseT_Half;
+ if (adv & ADVERTISE_10FULL)
+ ecmd->advertising |= ADVERTISED_10baseT_Full;
+ if (adv & ADVERTISE_100HALF)
+ ecmd->advertising |= ADVERTISED_100baseT_Half;
+ if (adv & ADVERTISE_100FULL)
+ ecmd->advertising |= ADVERTISED_100baseT_Full;
+ if (np->gigabit == PHY_GIGABIT) {
+ adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
+ if (adv & ADVERTISE_1000FULL)
+ ecmd->advertising |= ADVERTISED_1000baseT_Full;
+ }
+ }
+ ecmd->supported = (SUPPORTED_Autoneg |
+ SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
+ SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
+ SUPPORTED_MII);
+ if (np->gigabit == PHY_GIGABIT)
+ ecmd->supported |= SUPPORTED_1000baseT_Full;
+
+ ecmd->phy_address = np->phyaddr;
+ ecmd->transceiver = XCVR_EXTERNAL;
+
+ /* ignore maxtxpkt, maxrxpkt for now */
+ spin_unlock_irq(&np->lock);
+ return 0;
+}
+
+static int nv_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u32 speed = ethtool_cmd_speed(ecmd);
+
+ if (ecmd->port != PORT_MII)
+ return -EINVAL;
+ if (ecmd->transceiver != XCVR_EXTERNAL)
+ return -EINVAL;
+ if (ecmd->phy_address != np->phyaddr) {
+ /* TODO: support switching between multiple phys. Should be
+ * trivial, but not enabled due to lack of test hardware. */
+ return -EINVAL;
+ }
+ if (ecmd->autoneg == AUTONEG_ENABLE) {
+ u32 mask;
+
+ mask = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full |
+ ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
+ if (np->gigabit == PHY_GIGABIT)
+ mask |= ADVERTISED_1000baseT_Full;
+
+ if ((ecmd->advertising & mask) == 0)
+ return -EINVAL;
+
+ } else if (ecmd->autoneg == AUTONEG_DISABLE) {
+ /* Note: autonegotiation disable, speed 1000 intentionally
+ * forbidden - no one should need that. */
+
+ if (speed != SPEED_10 && speed != SPEED_100)
+ return -EINVAL;
+ if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
+ return -EINVAL;
+ } else {
+ return -EINVAL;
+ }
+
+ netif_carrier_off(dev);
+ if (netif_running(dev)) {
+ unsigned long flags;
+
+ nv_disable_irq(dev);
+ netif_tx_lock_bh(dev);
+ netif_addr_lock(dev);
+ /* with plain spinlock lockdep complains */
+ spin_lock_irqsave(&np->lock, flags);
+ /* stop engines */
+ /* FIXME:
+ * this can take some time, and interrupts are disabled
+ * due to spin_lock_irqsave, but let's hope no daemon
+ * is going to change the settings very often...
+ * Worst case:
+ * NV_RXSTOP_DELAY1MAX + NV_TXSTOP_DELAY1MAX
+ * + some minor delays, which is up to a second approximately
+ */
+ nv_stop_rxtx(dev);
+ spin_unlock_irqrestore(&np->lock, flags);
+ netif_addr_unlock(dev);
+ netif_tx_unlock_bh(dev);
+ }
+
+ if (ecmd->autoneg == AUTONEG_ENABLE) {
+ int adv, bmcr;
+
+ np->autoneg = 1;
+
+ /* advertise only what has been requested */
+ adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
+ adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
+ if (ecmd->advertising & ADVERTISED_10baseT_Half)
+ adv |= ADVERTISE_10HALF;
+ if (ecmd->advertising & ADVERTISED_10baseT_Full)
+ adv |= ADVERTISE_10FULL;
+ if (ecmd->advertising & ADVERTISED_100baseT_Half)
+ adv |= ADVERTISE_100HALF;
+ if (ecmd->advertising & ADVERTISED_100baseT_Full)
+ adv |= ADVERTISE_100FULL;
+ if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) /* for rx we set both advertisements but disable tx pause */
+ adv |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
+ if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
+ adv |= ADVERTISE_PAUSE_ASYM;
+ mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
+
+ if (np->gigabit == PHY_GIGABIT) {
+ adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
+ adv &= ~ADVERTISE_1000FULL;
+ if (ecmd->advertising & ADVERTISED_1000baseT_Full)
+ adv |= ADVERTISE_1000FULL;
+ mii_rw(dev, np->phyaddr, MII_CTRL1000, adv);
+ }
+
+ if (netif_running(dev))
+ netdev_info(dev, "link down\n");
+ bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
+ if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
+ bmcr |= BMCR_ANENABLE;
+ /* reset the phy in order for settings to stick,
+ * and cause autoneg to start */
+ if (phy_reset(dev, bmcr)) {
+ netdev_info(dev, "phy reset failed\n");
+ return -EINVAL;
+ }
+ } else {
+ bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
+ mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
+ }
+ } else {
+ int adv, bmcr;
+
+ np->autoneg = 0;
+
+ adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
+ adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
+ if (speed == SPEED_10 && ecmd->duplex == DUPLEX_HALF)
+ adv |= ADVERTISE_10HALF;
+ if (speed == SPEED_10 && ecmd->duplex == DUPLEX_FULL)
+ adv |= ADVERTISE_10FULL;
+ if (speed == SPEED_100 && ecmd->duplex == DUPLEX_HALF)
+ adv |= ADVERTISE_100HALF;
+ if (speed == SPEED_100 && ecmd->duplex == DUPLEX_FULL)
+ adv |= ADVERTISE_100FULL;
+ np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
+ if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) {/* for rx we set both advertisements but disable tx pause */
+ adv |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
+ np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
+ }
+ if (np->pause_flags & NV_PAUSEFRAME_TX_REQ) {
+ adv |= ADVERTISE_PAUSE_ASYM;
+ np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
+ }
+ mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
+ np->fixed_mode = adv;
+
+ if (np->gigabit == PHY_GIGABIT) {
+ adv = mii_rw(dev, np->phyaddr, MII_CTRL1000, MII_READ);
+ adv &= ~ADVERTISE_1000FULL;
+ mii_rw(dev, np->phyaddr, MII_CTRL1000, adv);
+ }
+
+ bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
+ bmcr &= ~(BMCR_ANENABLE|BMCR_SPEED100|BMCR_SPEED1000|BMCR_FULLDPLX);
+ if (np->fixed_mode & (ADVERTISE_10FULL|ADVERTISE_100FULL))
+ bmcr |= BMCR_FULLDPLX;
+ if (np->fixed_mode & (ADVERTISE_100HALF|ADVERTISE_100FULL))
+ bmcr |= BMCR_SPEED100;
+ if (np->phy_oui == PHY_OUI_MARVELL) {
+ /* reset the phy in order for forced mode settings to stick */
+ if (phy_reset(dev, bmcr)) {
+ netdev_info(dev, "phy reset failed\n");
+ return -EINVAL;
+ }
+ } else {
+ mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
+ if (netif_running(dev)) {
+ /* Wait a bit and then reconfigure the nic. */
+ udelay(10);
+ nv_linkchange(dev);
+ }
+ }
+ }
+
+ if (netif_running(dev)) {
+ nv_start_rxtx(dev);
+ nv_enable_irq(dev);
+ }
+
+ return 0;
+}
+
+#define FORCEDETH_REGS_VER 1
+
+static int nv_get_regs_len(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ return np->register_size;
+}
+
+static void nv_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *buf)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ u32 *rbuf = buf;
+ int i;
+
+ regs->version = FORCEDETH_REGS_VER;
+ spin_lock_irq(&np->lock);
+ for (i = 0; i <= np->register_size/sizeof(u32); i++)
+ rbuf[i] = readl(base + i*sizeof(u32));
+ spin_unlock_irq(&np->lock);
+}
+
+static int nv_nway_reset(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ int ret;
+
+ if (np->autoneg) {
+ int bmcr;
+
+ netif_carrier_off(dev);
+ if (netif_running(dev)) {
+ nv_disable_irq(dev);
+ netif_tx_lock_bh(dev);
+ netif_addr_lock(dev);
+ spin_lock(&np->lock);
+ /* stop engines */
+ nv_stop_rxtx(dev);
+ spin_unlock(&np->lock);
+ netif_addr_unlock(dev);
+ netif_tx_unlock_bh(dev);
+ netdev_info(dev, "link down\n");
+ }
+
+ bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
+ if (np->phy_model == PHY_MODEL_MARVELL_E3016) {
+ bmcr |= BMCR_ANENABLE;
+ /* reset the phy in order for settings to stick*/
+ if (phy_reset(dev, bmcr)) {
+ netdev_info(dev, "phy reset failed\n");
+ return -EINVAL;
+ }
+ } else {
+ bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
+ mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
+ }
+
+ if (netif_running(dev)) {
+ nv_start_rxtx(dev);
+ nv_enable_irq(dev);
+ }
+ ret = 0;
+ } else {
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+static void nv_get_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
+{
+ struct fe_priv *np = netdev_priv(dev);
+
+ ring->rx_max_pending = (np->desc_ver == DESC_VER_1) ? RING_MAX_DESC_VER_1 : RING_MAX_DESC_VER_2_3;
+ ring->rx_mini_max_pending = 0;
+ ring->rx_jumbo_max_pending = 0;
+ ring->tx_max_pending = (np->desc_ver == DESC_VER_1) ? RING_MAX_DESC_VER_1 : RING_MAX_DESC_VER_2_3;
+
+ ring->rx_pending = np->rx_ring_size;
+ ring->rx_mini_pending = 0;
+ ring->rx_jumbo_pending = 0;
+ ring->tx_pending = np->tx_ring_size;
+}
+
+static int nv_set_ringparam(struct net_device *dev, struct ethtool_ringparam* ring)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ u8 *rxtx_ring, *rx_skbuff, *tx_skbuff;
+ dma_addr_t ring_addr;
+
+ if (ring->rx_pending < RX_RING_MIN ||
+ ring->tx_pending < TX_RING_MIN ||
+ ring->rx_mini_pending != 0 ||
+ ring->rx_jumbo_pending != 0 ||
+ (np->desc_ver == DESC_VER_1 &&
+ (ring->rx_pending > RING_MAX_DESC_VER_1 ||
+ ring->tx_pending > RING_MAX_DESC_VER_1)) ||
+ (np->desc_ver != DESC_VER_1 &&
+ (ring->rx_pending > RING_MAX_DESC_VER_2_3 ||
+ ring->tx_pending > RING_MAX_DESC_VER_2_3))) {
+ return -EINVAL;
+ }
+
+ /* allocate new rings */
+ if (!nv_optimized(np)) {
+ rxtx_ring = pci_alloc_consistent(np->pci_dev,
+ sizeof(struct ring_desc) * (ring->rx_pending + ring->tx_pending),
+ &ring_addr);
+ } else {
+ rxtx_ring = pci_alloc_consistent(np->pci_dev,
+ sizeof(struct ring_desc_ex) * (ring->rx_pending + ring->tx_pending),
+ &ring_addr);
+ }
+ rx_skbuff = kmalloc(sizeof(struct nv_skb_map) * ring->rx_pending, GFP_KERNEL);
+ tx_skbuff = kmalloc(sizeof(struct nv_skb_map) * ring->tx_pending, GFP_KERNEL);
+ if (!rxtx_ring || !rx_skbuff || !tx_skbuff) {
+ /* fall back to old rings */
+ if (!nv_optimized(np)) {
+ if (rxtx_ring)
+ pci_free_consistent(np->pci_dev, sizeof(struct ring_desc) * (ring->rx_pending + ring->tx_pending),
+ rxtx_ring, ring_addr);
+ } else {
+ if (rxtx_ring)
+ pci_free_consistent(np->pci_dev, sizeof(struct ring_desc_ex) * (ring->rx_pending + ring->tx_pending),
+ rxtx_ring, ring_addr);
+ }
+
+ kfree(rx_skbuff);
+ kfree(tx_skbuff);
+ goto exit;
+ }
+
+ if (netif_running(dev)) {
+ nv_disable_irq(dev);
+ nv_napi_disable(dev);
+ netif_tx_lock_bh(dev);
+ netif_addr_lock(dev);
+ spin_lock(&np->lock);
+ /* stop engines */
+ nv_stop_rxtx(dev);
+ nv_txrx_reset(dev);
+ /* drain queues */
+ nv_drain_rxtx(dev);
+ /* delete queues */
+ free_rings(dev);
+ }
+
+ /* set new values */
+ np->rx_ring_size = ring->rx_pending;
+ np->tx_ring_size = ring->tx_pending;
+
+ if (!nv_optimized(np)) {
+ np->rx_ring.orig = (struct ring_desc *)rxtx_ring;
+ np->tx_ring.orig = &np->rx_ring.orig[np->rx_ring_size];
+ } else {
+ np->rx_ring.ex = (struct ring_desc_ex *)rxtx_ring;
+ np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
+ }
+ np->rx_skb = (struct nv_skb_map *)rx_skbuff;
+ np->tx_skb = (struct nv_skb_map *)tx_skbuff;
+ np->ring_addr = ring_addr;
+
+ memset(np->rx_skb, 0, sizeof(struct nv_skb_map) * np->rx_ring_size);
+ memset(np->tx_skb, 0, sizeof(struct nv_skb_map) * np->tx_ring_size);
+
+ if (netif_running(dev)) {
+ /* reinit driver view of the queues */
+ set_bufsize(dev);
+ if (nv_init_ring(dev)) {
+ if (!np->in_shutdown)
+ mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
+ }
+
+ /* reinit nic view of the queues */
+ writel(np->rx_buf_sz, base + NvRegOffloadConfig);
+ setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
+ writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
+ base + NvRegRingSizes);
+ pci_push(base);
+ writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
+ pci_push(base);
+
+ /* restart engines */
+ nv_start_rxtx(dev);
+ spin_unlock(&np->lock);
+ netif_addr_unlock(dev);
+ netif_tx_unlock_bh(dev);
+ nv_napi_enable(dev);
+ nv_enable_irq(dev);
+ }
+ return 0;
+exit:
+ return -ENOMEM;
+}
+
+static void nv_get_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
+{
+ struct fe_priv *np = netdev_priv(dev);
+
+ pause->autoneg = (np->pause_flags & NV_PAUSEFRAME_AUTONEG) != 0;
+ pause->rx_pause = (np->pause_flags & NV_PAUSEFRAME_RX_ENABLE) != 0;
+ pause->tx_pause = (np->pause_flags & NV_PAUSEFRAME_TX_ENABLE) != 0;
+}
+
+static int nv_set_pauseparam(struct net_device *dev, struct ethtool_pauseparam* pause)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ int adv, bmcr;
+
+ if ((!np->autoneg && np->duplex == 0) ||
+ (np->autoneg && !pause->autoneg && np->duplex == 0)) {
+ netdev_info(dev, "can not set pause settings when forced link is in half duplex\n");
+ return -EINVAL;
+ }
+ if (pause->tx_pause && !(np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)) {
+ netdev_info(dev, "hardware does not support tx pause frames\n");
+ return -EINVAL;
+ }
+
+ netif_carrier_off(dev);
+ if (netif_running(dev)) {
+ nv_disable_irq(dev);
+ netif_tx_lock_bh(dev);
+ netif_addr_lock(dev);
+ spin_lock(&np->lock);
+ /* stop engines */
+ nv_stop_rxtx(dev);
+ spin_unlock(&np->lock);
+ netif_addr_unlock(dev);
+ netif_tx_unlock_bh(dev);
+ }
+
+ np->pause_flags &= ~(NV_PAUSEFRAME_RX_REQ|NV_PAUSEFRAME_TX_REQ);
+ if (pause->rx_pause)
+ np->pause_flags |= NV_PAUSEFRAME_RX_REQ;
+ if (pause->tx_pause)
+ np->pause_flags |= NV_PAUSEFRAME_TX_REQ;
+
+ if (np->autoneg && pause->autoneg) {
+ np->pause_flags |= NV_PAUSEFRAME_AUTONEG;
+
+ adv = mii_rw(dev, np->phyaddr, MII_ADVERTISE, MII_READ);
+ adv &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
+ if (np->pause_flags & NV_PAUSEFRAME_RX_REQ) /* for rx we set both advertisements but disable tx pause */
+ adv |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
+ if (np->pause_flags & NV_PAUSEFRAME_TX_REQ)
+ adv |= ADVERTISE_PAUSE_ASYM;
+ mii_rw(dev, np->phyaddr, MII_ADVERTISE, adv);
+
+ if (netif_running(dev))
+ netdev_info(dev, "link down\n");
+ bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
+ bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
+ mii_rw(dev, np->phyaddr, MII_BMCR, bmcr);
+ } else {
+ np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
+ if (pause->rx_pause)
+ np->pause_flags |= NV_PAUSEFRAME_RX_ENABLE;
+ if (pause->tx_pause)
+ np->pause_flags |= NV_PAUSEFRAME_TX_ENABLE;
+
+ if (!netif_running(dev))
+ nv_update_linkspeed(dev);
+ else
+ nv_update_pause(dev, np->pause_flags);
+ }
+
+ if (netif_running(dev)) {
+ nv_start_rxtx(dev);
+ nv_enable_irq(dev);
+ }
+ return 0;
+}
+
+static u32 nv_fix_features(struct net_device *dev, u32 features)
+{
+ /* vlan is dependent on rx checksum offload */
+ if (features & (NETIF_F_HW_VLAN_TX|NETIF_F_HW_VLAN_RX))
+ features |= NETIF_F_RXCSUM;
+
+ return features;
+}
+
+static void nv_vlan_mode(struct net_device *dev, u32 features)
+{
+ struct fe_priv *np = get_nvpriv(dev);
+
+ spin_lock_irq(&np->lock);
+
+ if (features & NETIF_F_HW_VLAN_RX)
+ np->txrxctl_bits |= NVREG_TXRXCTL_VLANSTRIP;
+ else
+ np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANSTRIP;
+
+ if (features & NETIF_F_HW_VLAN_TX)
+ np->txrxctl_bits |= NVREG_TXRXCTL_VLANINS;
+ else
+ np->txrxctl_bits &= ~NVREG_TXRXCTL_VLANINS;
+
+ writel(np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
+
+ spin_unlock_irq(&np->lock);
+}
+
+static int nv_set_features(struct net_device *dev, u32 features)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ u32 changed = dev->features ^ features;
+
+ if (changed & NETIF_F_RXCSUM) {
+ spin_lock_irq(&np->lock);
+
+ if (features & NETIF_F_RXCSUM)
+ np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
+ else
+ np->txrxctl_bits &= ~NVREG_TXRXCTL_RXCHECK;
+
+ if (netif_running(dev))
+ writel(np->txrxctl_bits, base + NvRegTxRxControl);
+
+ spin_unlock_irq(&np->lock);
+ }
+
+ if (changed & (NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX))
+ nv_vlan_mode(dev, features);
+
+ return 0;
+}
+
+static int nv_get_sset_count(struct net_device *dev, int sset)
+{
+ struct fe_priv *np = netdev_priv(dev);
+
+ switch (sset) {
+ case ETH_SS_TEST:
+ if (np->driver_data & DEV_HAS_TEST_EXTENDED)
+ return NV_TEST_COUNT_EXTENDED;
+ else
+ return NV_TEST_COUNT_BASE;
+ case ETH_SS_STATS:
+ if (np->driver_data & DEV_HAS_STATISTICS_V3)
+ return NV_DEV_STATISTICS_V3_COUNT;
+ else if (np->driver_data & DEV_HAS_STATISTICS_V2)
+ return NV_DEV_STATISTICS_V2_COUNT;
+ else if (np->driver_data & DEV_HAS_STATISTICS_V1)
+ return NV_DEV_STATISTICS_V1_COUNT;
+ else
+ return 0;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static void nv_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *estats, u64 *buffer)
+{
+ struct fe_priv *np = netdev_priv(dev);
+
+ /* update stats */
+ nv_do_stats_poll((unsigned long)dev);
+
+ memcpy(buffer, &np->estats, nv_get_sset_count(dev, ETH_SS_STATS)*sizeof(u64));
+}
+
+static int nv_link_test(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ int mii_status;
+
+ mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
+ mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
+
+ /* check phy link status */
+ if (!(mii_status & BMSR_LSTATUS))
+ return 0;
+ else
+ return 1;
+}
+
+static int nv_register_test(struct net_device *dev)
+{
+ u8 __iomem *base = get_hwbase(dev);
+ int i = 0;
+ u32 orig_read, new_read;
+
+ do {
+ orig_read = readl(base + nv_registers_test[i].reg);
+
+ /* xor with mask to toggle bits */
+ orig_read ^= nv_registers_test[i].mask;
+
+ writel(orig_read, base + nv_registers_test[i].reg);
+
+ new_read = readl(base + nv_registers_test[i].reg);
+
+ if ((new_read & nv_registers_test[i].mask) != (orig_read & nv_registers_test[i].mask))
+ return 0;
+
+ /* restore original value */
+ orig_read ^= nv_registers_test[i].mask;
+ writel(orig_read, base + nv_registers_test[i].reg);
+
+ } while (nv_registers_test[++i].reg != 0);
+
+ return 1;
+}
+
+static int nv_interrupt_test(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ int ret = 1;
+ int testcnt;
+ u32 save_msi_flags, save_poll_interval = 0;
+
+ if (netif_running(dev)) {
+ /* free current irq */
+ nv_free_irq(dev);
+ save_poll_interval = readl(base+NvRegPollingInterval);
+ }
+
+ /* flag to test interrupt handler */
+ np->intr_test = 0;
+
+ /* setup test irq */
+ save_msi_flags = np->msi_flags;
+ np->msi_flags &= ~NV_MSI_X_VECTORS_MASK;
+ np->msi_flags |= 0x001; /* setup 1 vector */
+ if (nv_request_irq(dev, 1))
+ return 0;
+
+ /* setup timer interrupt */
+ writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
+ writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
+
+ nv_enable_hw_interrupts(dev, NVREG_IRQ_TIMER);
+
+ /* wait for at least one interrupt */
+ msleep(100);
+
+ spin_lock_irq(&np->lock);
+
+ /* flag should be set within ISR */
+ testcnt = np->intr_test;
+ if (!testcnt)
+ ret = 2;
+
+ nv_disable_hw_interrupts(dev, NVREG_IRQ_TIMER);
+ if (!(np->msi_flags & NV_MSI_X_ENABLED))
+ writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
+ else
+ writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
+
+ spin_unlock_irq(&np->lock);
+
+ nv_free_irq(dev);
+
+ np->msi_flags = save_msi_flags;
+
+ if (netif_running(dev)) {
+ writel(save_poll_interval, base + NvRegPollingInterval);
+ writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
+ /* restore original irq */
+ if (nv_request_irq(dev, 0))
+ return 0;
+ }
+
+ return ret;
+}
+
+static int nv_loopback_test(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ struct sk_buff *tx_skb, *rx_skb;
+ dma_addr_t test_dma_addr;
+ u32 tx_flags_extra = (np->desc_ver == DESC_VER_1 ? NV_TX_LASTPACKET : NV_TX2_LASTPACKET);
+ u32 flags;
+ int len, i, pkt_len;
+ u8 *pkt_data;
+ u32 filter_flags = 0;
+ u32 misc1_flags = 0;
+ int ret = 1;
+
+ if (netif_running(dev)) {
+ nv_disable_irq(dev);
+ filter_flags = readl(base + NvRegPacketFilterFlags);
+ misc1_flags = readl(base + NvRegMisc1);
+ } else {
+ nv_txrx_reset(dev);
+ }
+
+ /* reinit driver view of the rx queue */
+ set_bufsize(dev);
+ nv_init_ring(dev);
+
+ /* setup hardware for loopback */
+ writel(NVREG_MISC1_FORCE, base + NvRegMisc1);
+ writel(NVREG_PFF_ALWAYS | NVREG_PFF_LOOPBACK, base + NvRegPacketFilterFlags);
+
+ /* reinit nic view of the rx queue */
+ writel(np->rx_buf_sz, base + NvRegOffloadConfig);
+ setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
+ writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
+ base + NvRegRingSizes);
+ pci_push(base);
+
+ /* restart rx engine */
+ nv_start_rxtx(dev);
+
+ /* setup packet for tx */
+ pkt_len = ETH_DATA_LEN;
+ tx_skb = dev_alloc_skb(pkt_len);
+ if (!tx_skb) {
+ netdev_err(dev, "dev_alloc_skb() failed during loopback test\n");
+ ret = 0;
+ goto out;
+ }
+ test_dma_addr = pci_map_single(np->pci_dev, tx_skb->data,
+ skb_tailroom(tx_skb),
+ PCI_DMA_FROMDEVICE);
+ pkt_data = skb_put(tx_skb, pkt_len);
+ for (i = 0; i < pkt_len; i++)
+ pkt_data[i] = (u8)(i & 0xff);
+
+ if (!nv_optimized(np)) {
+ np->tx_ring.orig[0].buf = cpu_to_le32(test_dma_addr);
+ np->tx_ring.orig[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
+ } else {
+ np->tx_ring.ex[0].bufhigh = cpu_to_le32(dma_high(test_dma_addr));
+ np->tx_ring.ex[0].buflow = cpu_to_le32(dma_low(test_dma_addr));
+ np->tx_ring.ex[0].flaglen = cpu_to_le32((pkt_len-1) | np->tx_flags | tx_flags_extra);
+ }
+ writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
+ pci_push(get_hwbase(dev));
+
+ msleep(500);
+
+ /* check for rx of the packet */
+ if (!nv_optimized(np)) {
+ flags = le32_to_cpu(np->rx_ring.orig[0].flaglen);
+ len = nv_descr_getlength(&np->rx_ring.orig[0], np->desc_ver);
+
+ } else {
+ flags = le32_to_cpu(np->rx_ring.ex[0].flaglen);
+ len = nv_descr_getlength_ex(&np->rx_ring.ex[0], np->desc_ver);
+ }
+
+ if (flags & NV_RX_AVAIL) {
+ ret = 0;
+ } else if (np->desc_ver == DESC_VER_1) {
+ if (flags & NV_RX_ERROR)
+ ret = 0;
+ } else {
+ if (flags & NV_RX2_ERROR)
+ ret = 0;
+ }
+
+ if (ret) {
+ if (len != pkt_len) {
+ ret = 0;
+ } else {
+ rx_skb = np->rx_skb[0].skb;
+ for (i = 0; i < pkt_len; i++) {
+ if (rx_skb->data[i] != (u8)(i & 0xff)) {
+ ret = 0;
+ break;
+ }
+ }
+ }
+ }
+
+ pci_unmap_single(np->pci_dev, test_dma_addr,
+ (skb_end_pointer(tx_skb) - tx_skb->data),
+ PCI_DMA_TODEVICE);
+ dev_kfree_skb_any(tx_skb);
+ out:
+ /* stop engines */
+ nv_stop_rxtx(dev);
+ nv_txrx_reset(dev);
+ /* drain rx queue */
+ nv_drain_rxtx(dev);
+
+ if (netif_running(dev)) {
+ writel(misc1_flags, base + NvRegMisc1);
+ writel(filter_flags, base + NvRegPacketFilterFlags);
+ nv_enable_irq(dev);
+ }
+
+ return ret;
+}
+
+static void nv_self_test(struct net_device *dev, struct ethtool_test *test, u64 *buffer)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ int result;
+ memset(buffer, 0, nv_get_sset_count(dev, ETH_SS_TEST)*sizeof(u64));
+
+ if (!nv_link_test(dev)) {
+ test->flags |= ETH_TEST_FL_FAILED;
+ buffer[0] = 1;
+ }
+
+ if (test->flags & ETH_TEST_FL_OFFLINE) {
+ if (netif_running(dev)) {
+ netif_stop_queue(dev);
+ nv_napi_disable(dev);
+ netif_tx_lock_bh(dev);
+ netif_addr_lock(dev);
+ spin_lock_irq(&np->lock);
+ nv_disable_hw_interrupts(dev, np->irqmask);
+ if (!(np->msi_flags & NV_MSI_X_ENABLED))
+ writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
+ else
+ writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
+ /* stop engines */
+ nv_stop_rxtx(dev);
+ nv_txrx_reset(dev);
+ /* drain rx queue */
+ nv_drain_rxtx(dev);
+ spin_unlock_irq(&np->lock);
+ netif_addr_unlock(dev);
+ netif_tx_unlock_bh(dev);
+ }
+
+ if (!nv_register_test(dev)) {
+ test->flags |= ETH_TEST_FL_FAILED;
+ buffer[1] = 1;
+ }
+
+ result = nv_interrupt_test(dev);
+ if (result != 1) {
+ test->flags |= ETH_TEST_FL_FAILED;
+ buffer[2] = 1;
+ }
+ if (result == 0) {
+ /* bail out */
+ return;
+ }
+
+ if (!nv_loopback_test(dev)) {
+ test->flags |= ETH_TEST_FL_FAILED;
+ buffer[3] = 1;
+ }
+
+ if (netif_running(dev)) {
+ /* reinit driver view of the rx queue */
+ set_bufsize(dev);
+ if (nv_init_ring(dev)) {
+ if (!np->in_shutdown)
+ mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
+ }
+ /* reinit nic view of the rx queue */
+ writel(np->rx_buf_sz, base + NvRegOffloadConfig);
+ setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
+ writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
+ base + NvRegRingSizes);
+ pci_push(base);
+ writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl);
+ pci_push(base);
+ /* restart rx engine */
+ nv_start_rxtx(dev);
+ netif_start_queue(dev);
+ nv_napi_enable(dev);
+ nv_enable_hw_interrupts(dev, np->irqmask);
+ }
+ }
+}
+
+static void nv_get_strings(struct net_device *dev, u32 stringset, u8 *buffer)
+{
+ switch (stringset) {
+ case ETH_SS_STATS:
+ memcpy(buffer, &nv_estats_str, nv_get_sset_count(dev, ETH_SS_STATS)*sizeof(struct nv_ethtool_str));
+ break;
+ case ETH_SS_TEST:
+ memcpy(buffer, &nv_etests_str, nv_get_sset_count(dev, ETH_SS_TEST)*sizeof(struct nv_ethtool_str));
+ break;
+ }
+}
+
+static const struct ethtool_ops ops = {
+ .get_drvinfo = nv_get_drvinfo,
+ .get_link = ethtool_op_get_link,
+ .get_wol = nv_get_wol,
+ .set_wol = nv_set_wol,
+ .get_settings = nv_get_settings,
+ .set_settings = nv_set_settings,
+ .get_regs_len = nv_get_regs_len,
+ .get_regs = nv_get_regs,
+ .nway_reset = nv_nway_reset,
+ .get_ringparam = nv_get_ringparam,
+ .set_ringparam = nv_set_ringparam,
+ .get_pauseparam = nv_get_pauseparam,
+ .set_pauseparam = nv_set_pauseparam,
+ .get_strings = nv_get_strings,
+ .get_ethtool_stats = nv_get_ethtool_stats,
+ .get_sset_count = nv_get_sset_count,
+ .self_test = nv_self_test,
+};
+
+/* The mgmt unit and driver use a semaphore to access the phy during init */
+static int nv_mgmt_acquire_sema(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ int i;
+ u32 tx_ctrl, mgmt_sema;
+
+ for (i = 0; i < 10; i++) {
+ mgmt_sema = readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_MGMT_SEMA_MASK;
+ if (mgmt_sema == NVREG_XMITCTL_MGMT_SEMA_FREE)
+ break;
+ msleep(500);
+ }
+
+ if (mgmt_sema != NVREG_XMITCTL_MGMT_SEMA_FREE)
+ return 0;
+
+ for (i = 0; i < 2; i++) {
+ tx_ctrl = readl(base + NvRegTransmitterControl);
+ tx_ctrl |= NVREG_XMITCTL_HOST_SEMA_ACQ;
+ writel(tx_ctrl, base + NvRegTransmitterControl);
+
+ /* verify that semaphore was acquired */
+ tx_ctrl = readl(base + NvRegTransmitterControl);
+ if (((tx_ctrl & NVREG_XMITCTL_HOST_SEMA_MASK) == NVREG_XMITCTL_HOST_SEMA_ACQ) &&
+ ((tx_ctrl & NVREG_XMITCTL_MGMT_SEMA_MASK) == NVREG_XMITCTL_MGMT_SEMA_FREE)) {
+ np->mgmt_sema = 1;
+ return 1;
+ } else
+ udelay(50);
+ }
+
+ return 0;
+}
+
+static void nv_mgmt_release_sema(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ u32 tx_ctrl;
+
+ if (np->driver_data & DEV_HAS_MGMT_UNIT) {
+ if (np->mgmt_sema) {
+ tx_ctrl = readl(base + NvRegTransmitterControl);
+ tx_ctrl &= ~NVREG_XMITCTL_HOST_SEMA_ACQ;
+ writel(tx_ctrl, base + NvRegTransmitterControl);
+ }
+ }
+}
+
+
+static int nv_mgmt_get_version(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ u32 data_ready = readl(base + NvRegTransmitterControl);
+ u32 data_ready2 = 0;
+ unsigned long start;
+ int ready = 0;
+
+ writel(NVREG_MGMTUNITGETVERSION, base + NvRegMgmtUnitGetVersion);
+ writel(data_ready ^ NVREG_XMITCTL_DATA_START, base + NvRegTransmitterControl);
+ start = jiffies;
+ while (time_before(jiffies, start + 5*HZ)) {
+ data_ready2 = readl(base + NvRegTransmitterControl);
+ if ((data_ready & NVREG_XMITCTL_DATA_READY) != (data_ready2 & NVREG_XMITCTL_DATA_READY)) {
+ ready = 1;
+ break;
+ }
+ schedule_timeout_uninterruptible(1);
+ }
+
+ if (!ready || (data_ready2 & NVREG_XMITCTL_DATA_ERROR))
+ return 0;
+
+ np->mgmt_version = readl(base + NvRegMgmtUnitVersion) & NVREG_MGMTUNITVERSION;
+
+ return 1;
+}
+
+static int nv_open(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ int ret = 1;
+ int oom, i;
+ u32 low;
+
+ /* power up phy */
+ mii_rw(dev, np->phyaddr, MII_BMCR,
+ mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ) & ~BMCR_PDOWN);
+
+ nv_txrx_gate(dev, false);
+ /* erase previous misconfiguration */
+ if (np->driver_data & DEV_HAS_POWER_CNTRL)
+ nv_mac_reset(dev);
+ writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
+ writel(0, base + NvRegMulticastAddrB);
+ writel(NVREG_MCASTMASKA_NONE, base + NvRegMulticastMaskA);
+ writel(NVREG_MCASTMASKB_NONE, base + NvRegMulticastMaskB);
+ writel(0, base + NvRegPacketFilterFlags);
+
+ writel(0, base + NvRegTransmitterControl);
+ writel(0, base + NvRegReceiverControl);
+
+ writel(0, base + NvRegAdapterControl);
+
+ if (np->pause_flags & NV_PAUSEFRAME_TX_CAPABLE)
+ writel(NVREG_TX_PAUSEFRAME_DISABLE, base + NvRegTxPauseFrame);
+
+ /* initialize descriptor rings */
+ set_bufsize(dev);
+ oom = nv_init_ring(dev);
+
+ writel(0, base + NvRegLinkSpeed);
+ writel(readl(base + NvRegTransmitPoll) & NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
+ nv_txrx_reset(dev);
+ writel(0, base + NvRegUnknownSetupReg6);
+
+ np->in_shutdown = 0;
+
+ /* give hw rings */
+ setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING);
+ writel(((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT),
+ base + NvRegRingSizes);
+
+ writel(np->linkspeed, base + NvRegLinkSpeed);
+ if (np->desc_ver == DESC_VER_1)
+ writel(NVREG_TX_WM_DESC1_DEFAULT, base + NvRegTxWatermark);
+ else
+ writel(NVREG_TX_WM_DESC2_3_DEFAULT, base + NvRegTxWatermark);
+ writel(np->txrxctl_bits, base + NvRegTxRxControl);
+ writel(np->vlanctl_bits, base + NvRegVlanControl);
+ pci_push(base);
+ writel(NVREG_TXRXCTL_BIT1|np->txrxctl_bits, base + NvRegTxRxControl);
+ if (reg_delay(dev, NvRegUnknownSetupReg5,
+ NVREG_UNKSETUP5_BIT31, NVREG_UNKSETUP5_BIT31,
+ NV_SETUP5_DELAY, NV_SETUP5_DELAYMAX))
+ netdev_info(dev,
+ "%s: SetupReg5, Bit 31 remained off\n", __func__);
+
+ writel(0, base + NvRegMIIMask);
+ writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
+ writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
+
+ writel(NVREG_MISC1_FORCE | NVREG_MISC1_HD, base + NvRegMisc1);
+ writel(readl(base + NvRegTransmitterStatus), base + NvRegTransmitterStatus);
+ writel(NVREG_PFF_ALWAYS, base + NvRegPacketFilterFlags);
+ writel(np->rx_buf_sz, base + NvRegOffloadConfig);
+
+ writel(readl(base + NvRegReceiverStatus), base + NvRegReceiverStatus);
+
+ get_random_bytes(&low, sizeof(low));
+ low &= NVREG_SLOTTIME_MASK;
+ if (np->desc_ver == DESC_VER_1) {
+ writel(low|NVREG_SLOTTIME_DEFAULT, base + NvRegSlotTime);
+ } else {
+ if (!(np->driver_data & DEV_HAS_GEAR_MODE)) {
+ /* setup legacy backoff */
+ writel(NVREG_SLOTTIME_LEGBF_ENABLED|NVREG_SLOTTIME_10_100_FULL|low, base + NvRegSlotTime);
+ } else {
+ writel(NVREG_SLOTTIME_10_100_FULL, base + NvRegSlotTime);
+ nv_gear_backoff_reseed(dev);
+ }
+ }
+ writel(NVREG_TX_DEFERRAL_DEFAULT, base + NvRegTxDeferral);
+ writel(NVREG_RX_DEFERRAL_DEFAULT, base + NvRegRxDeferral);
+ if (poll_interval == -1) {
+ if (optimization_mode == NV_OPTIMIZATION_MODE_THROUGHPUT)
+ writel(NVREG_POLL_DEFAULT_THROUGHPUT, base + NvRegPollingInterval);
+ else
+ writel(NVREG_POLL_DEFAULT_CPU, base + NvRegPollingInterval);
+ } else
+ writel(poll_interval & 0xFFFF, base + NvRegPollingInterval);
+ writel(NVREG_UNKSETUP6_VAL, base + NvRegUnknownSetupReg6);
+ writel((np->phyaddr << NVREG_ADAPTCTL_PHYSHIFT)|NVREG_ADAPTCTL_PHYVALID|NVREG_ADAPTCTL_RUNNING,
+ base + NvRegAdapterControl);
+ writel(NVREG_MIISPEED_BIT8|NVREG_MIIDELAY, base + NvRegMIISpeed);
+ writel(NVREG_MII_LINKCHANGE, base + NvRegMIIMask);
+ if (np->wolenabled)
+ writel(NVREG_WAKEUPFLAGS_ENABLE , base + NvRegWakeUpFlags);
+
+ i = readl(base + NvRegPowerState);
+ if ((i & NVREG_POWERSTATE_POWEREDUP) == 0)
+ writel(NVREG_POWERSTATE_POWEREDUP|i, base + NvRegPowerState);
+
+ pci_push(base);
+ udelay(10);
+ writel(readl(base + NvRegPowerState) | NVREG_POWERSTATE_VALID, base + NvRegPowerState);
+
+ nv_disable_hw_interrupts(dev, np->irqmask);
+ pci_push(base);
+ writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
+ writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
+ pci_push(base);
+
+ if (nv_request_irq(dev, 0))
+ goto out_drain;
+
+ /* ask for interrupts */
+ nv_enable_hw_interrupts(dev, np->irqmask);
+
+ spin_lock_irq(&np->lock);
+ writel(NVREG_MCASTADDRA_FORCE, base + NvRegMulticastAddrA);
+ writel(0, base + NvRegMulticastAddrB);
+ writel(NVREG_MCASTMASKA_NONE, base + NvRegMulticastMaskA);
+ writel(NVREG_MCASTMASKB_NONE, base + NvRegMulticastMaskB);
+ writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags);
+ /* One manual link speed update: Interrupts are enabled, future link
+ * speed changes cause interrupts and are handled by nv_link_irq().
+ */
+ {
+ u32 miistat;
+ miistat = readl(base + NvRegMIIStatus);
+ writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
+ }
+ /* set linkspeed to invalid value, thus force nv_update_linkspeed
+ * to init hw */
+ np->linkspeed = 0;
+ ret = nv_update_linkspeed(dev);
+ nv_start_rxtx(dev);
+ netif_start_queue(dev);
+ nv_napi_enable(dev);
+
+ if (ret) {
+ netif_carrier_on(dev);
+ } else {
+ netdev_info(dev, "no link during initialization\n");
+ netif_carrier_off(dev);
+ }
+ if (oom)
+ mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
+
+ /* start statistics timer */
+ if (np->driver_data & (DEV_HAS_STATISTICS_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_STATISTICS_V3))
+ mod_timer(&np->stats_poll,
+ round_jiffies(jiffies + STATS_INTERVAL));
+
+ spin_unlock_irq(&np->lock);
+
+ return 0;
+out_drain:
+ nv_drain_rxtx(dev);
+ return ret;
+}
+
+static int nv_close(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base;
+
+ spin_lock_irq(&np->lock);
+ np->in_shutdown = 1;
+ spin_unlock_irq(&np->lock);
+ nv_napi_disable(dev);
+ synchronize_irq(np->pci_dev->irq);
+
+ del_timer_sync(&np->oom_kick);
+ del_timer_sync(&np->nic_poll);
+ del_timer_sync(&np->stats_poll);
+
+ netif_stop_queue(dev);
+ spin_lock_irq(&np->lock);
+ nv_stop_rxtx(dev);
+ nv_txrx_reset(dev);
+
+ /* disable interrupts on the nic or we will lock up */
+ base = get_hwbase(dev);
+ nv_disable_hw_interrupts(dev, np->irqmask);
+ pci_push(base);
+
+ spin_unlock_irq(&np->lock);
+
+ nv_free_irq(dev);
+
+ nv_drain_rxtx(dev);
+
+ if (np->wolenabled || !phy_power_down) {
+ nv_txrx_gate(dev, false);
+ writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags);
+ nv_start_rx(dev);
+ } else {
+ /* power down phy */
+ mii_rw(dev, np->phyaddr, MII_BMCR,
+ mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ)|BMCR_PDOWN);
+ nv_txrx_gate(dev, true);
+ }
+
+ /* FIXME: power down nic */
+
+ return 0;
+}
+
+static const struct net_device_ops nv_netdev_ops = {
+ .ndo_open = nv_open,
+ .ndo_stop = nv_close,
+ .ndo_get_stats = nv_get_stats,
+ .ndo_start_xmit = nv_start_xmit,
+ .ndo_tx_timeout = nv_tx_timeout,
+ .ndo_change_mtu = nv_change_mtu,
+ .ndo_fix_features = nv_fix_features,
+ .ndo_set_features = nv_set_features,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_mac_address = nv_set_mac_address,
+ .ndo_set_rx_mode = nv_set_multicast,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = nv_poll_controller,
+#endif
+};
+
+static const struct net_device_ops nv_netdev_ops_optimized = {
+ .ndo_open = nv_open,
+ .ndo_stop = nv_close,
+ .ndo_get_stats = nv_get_stats,
+ .ndo_start_xmit = nv_start_xmit_optimized,
+ .ndo_tx_timeout = nv_tx_timeout,
+ .ndo_change_mtu = nv_change_mtu,
+ .ndo_fix_features = nv_fix_features,
+ .ndo_set_features = nv_set_features,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_mac_address = nv_set_mac_address,
+ .ndo_set_rx_mode = nv_set_multicast,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = nv_poll_controller,
+#endif
+};
+
+static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_id *id)
+{
+ struct net_device *dev;
+ struct fe_priv *np;
+ unsigned long addr;
+ u8 __iomem *base;
+ int err, i;
+ u32 powerstate, txreg;
+ u32 phystate_orig = 0, phystate;
+ int phyinitialized = 0;
+ static int printed_version;
+
+ if (!printed_version++)
+ pr_info("Reverse Engineered nForce ethernet driver. Version %s.\n",
+ FORCEDETH_VERSION);
+
+ dev = alloc_etherdev(sizeof(struct fe_priv));
+ err = -ENOMEM;
+ if (!dev)
+ goto out;
+
+ np = netdev_priv(dev);
+ np->dev = dev;
+ np->pci_dev = pci_dev;
+ spin_lock_init(&np->lock);
+ SET_NETDEV_DEV(dev, &pci_dev->dev);
+
+ init_timer(&np->oom_kick);
+ np->oom_kick.data = (unsigned long) dev;
+ np->oom_kick.function = nv_do_rx_refill; /* timer handler */
+ init_timer(&np->nic_poll);
+ np->nic_poll.data = (unsigned long) dev;
+ np->nic_poll.function = nv_do_nic_poll; /* timer handler */
+ init_timer(&np->stats_poll);
+ np->stats_poll.data = (unsigned long) dev;
+ np->stats_poll.function = nv_do_stats_poll; /* timer handler */
+
+ err = pci_enable_device(pci_dev);
+ if (err)
+ goto out_free;
+
+ pci_set_master(pci_dev);
+
+ err = pci_request_regions(pci_dev, DRV_NAME);
+ if (err < 0)
+ goto out_disable;
+
+ if (id->driver_data & (DEV_HAS_VLAN|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V2|DEV_HAS_STATISTICS_V3))
+ np->register_size = NV_PCI_REGSZ_VER3;
+ else if (id->driver_data & DEV_HAS_STATISTICS_V1)
+ np->register_size = NV_PCI_REGSZ_VER2;
+ else
+ np->register_size = NV_PCI_REGSZ_VER1;
+
+ err = -EINVAL;
+ addr = 0;
+ for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
+ if (pci_resource_flags(pci_dev, i) & IORESOURCE_MEM &&
+ pci_resource_len(pci_dev, i) >= np->register_size) {
+ addr = pci_resource_start(pci_dev, i);
+ break;
+ }
+ }
+ if (i == DEVICE_COUNT_RESOURCE) {
+ dev_info(&pci_dev->dev, "Couldn't find register window\n");
+ goto out_relreg;
+ }
+
+ /* copy of driver data */
+ np->driver_data = id->driver_data;
+ /* copy of device id */
+ np->device_id = id->device;
+
+ /* handle different descriptor versions */
+ if (id->driver_data & DEV_HAS_HIGH_DMA) {
+ /* packet format 3: supports 40-bit addressing */
+ np->desc_ver = DESC_VER_3;
+ np->txrxctl_bits = NVREG_TXRXCTL_DESC_3;
+ if (dma_64bit) {
+ if (pci_set_dma_mask(pci_dev, DMA_BIT_MASK(39)))
+ dev_info(&pci_dev->dev,
+ "64-bit DMA failed, using 32-bit addressing\n");
+ else
+ dev->features |= NETIF_F_HIGHDMA;
+ if (pci_set_consistent_dma_mask(pci_dev, DMA_BIT_MASK(39))) {
+ dev_info(&pci_dev->dev,
+ "64-bit DMA (consistent) failed, using 32-bit ring buffers\n");
+ }
+ }
+ } else if (id->driver_data & DEV_HAS_LARGEDESC) {
+ /* packet format 2: supports jumbo frames */
+ np->desc_ver = DESC_VER_2;
+ np->txrxctl_bits = NVREG_TXRXCTL_DESC_2;
+ } else {
+ /* original packet format */
+ np->desc_ver = DESC_VER_1;
+ np->txrxctl_bits = NVREG_TXRXCTL_DESC_1;
+ }
+
+ np->pkt_limit = NV_PKTLIMIT_1;
+ if (id->driver_data & DEV_HAS_LARGEDESC)
+ np->pkt_limit = NV_PKTLIMIT_2;
+
+ if (id->driver_data & DEV_HAS_CHECKSUM) {
+ np->txrxctl_bits |= NVREG_TXRXCTL_RXCHECK;
+ dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_SG |
+ NETIF_F_TSO | NETIF_F_RXCSUM;
+ }
+
+ np->vlanctl_bits = 0;
+ if (id->driver_data & DEV_HAS_VLAN) {
+ np->vlanctl_bits = NVREG_VLANCONTROL_ENABLE;
+ dev->hw_features |= NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX;
+ }
+
+ dev->features |= dev->hw_features;
+
+ np->pause_flags = NV_PAUSEFRAME_RX_CAPABLE | NV_PAUSEFRAME_RX_REQ | NV_PAUSEFRAME_AUTONEG;
+ if ((id->driver_data & DEV_HAS_PAUSEFRAME_TX_V1) ||
+ (id->driver_data & DEV_HAS_PAUSEFRAME_TX_V2) ||
+ (id->driver_data & DEV_HAS_PAUSEFRAME_TX_V3)) {
+ np->pause_flags |= NV_PAUSEFRAME_TX_CAPABLE | NV_PAUSEFRAME_TX_REQ;
+ }
+
+ err = -ENOMEM;
+ np->base = ioremap(addr, np->register_size);
+ if (!np->base)
+ goto out_relreg;
+ dev->base_addr = (unsigned long)np->base;
+
+ dev->irq = pci_dev->irq;
+
+ np->rx_ring_size = RX_RING_DEFAULT;
+ np->tx_ring_size = TX_RING_DEFAULT;
+
+ if (!nv_optimized(np)) {
+ np->rx_ring.orig = pci_alloc_consistent(pci_dev,
+ sizeof(struct ring_desc) * (np->rx_ring_size + np->tx_ring_size),
+ &np->ring_addr);
+ if (!np->rx_ring.orig)
+ goto out_unmap;
+ np->tx_ring.orig = &np->rx_ring.orig[np->rx_ring_size];
+ } else {
+ np->rx_ring.ex = pci_alloc_consistent(pci_dev,
+ sizeof(struct ring_desc_ex) * (np->rx_ring_size + np->tx_ring_size),
+ &np->ring_addr);
+ if (!np->rx_ring.ex)
+ goto out_unmap;
+ np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
+ }
+ np->rx_skb = kcalloc(np->rx_ring_size, sizeof(struct nv_skb_map), GFP_KERNEL);
+ np->tx_skb = kcalloc(np->tx_ring_size, sizeof(struct nv_skb_map), GFP_KERNEL);
+ if (!np->rx_skb || !np->tx_skb)
+ goto out_freering;
+
+ if (!nv_optimized(np))
+ dev->netdev_ops = &nv_netdev_ops;
+ else
+ dev->netdev_ops = &nv_netdev_ops_optimized;
+
+ netif_napi_add(dev, &np->napi, nv_napi_poll, RX_WORK_PER_LOOP);
+ SET_ETHTOOL_OPS(dev, &ops);
+ dev->watchdog_timeo = NV_WATCHDOG_TIMEO;
+
+ pci_set_drvdata(pci_dev, dev);
+
+ /* read the mac address */
+ base = get_hwbase(dev);
+ np->orig_mac[0] = readl(base + NvRegMacAddrA);
+ np->orig_mac[1] = readl(base + NvRegMacAddrB);
+
+ /* check the workaround bit for correct mac address order */
+ txreg = readl(base + NvRegTransmitPoll);
+ if (id->driver_data & DEV_HAS_CORRECT_MACADDR) {
+ /* mac address is already in correct order */
+ dev->dev_addr[0] = (np->orig_mac[0] >> 0) & 0xff;
+ dev->dev_addr[1] = (np->orig_mac[0] >> 8) & 0xff;
+ dev->dev_addr[2] = (np->orig_mac[0] >> 16) & 0xff;
+ dev->dev_addr[3] = (np->orig_mac[0] >> 24) & 0xff;
+ dev->dev_addr[4] = (np->orig_mac[1] >> 0) & 0xff;
+ dev->dev_addr[5] = (np->orig_mac[1] >> 8) & 0xff;
+ } else if (txreg & NVREG_TRANSMITPOLL_MAC_ADDR_REV) {
+ /* mac address is already in correct order */
+ dev->dev_addr[0] = (np->orig_mac[0] >> 0) & 0xff;
+ dev->dev_addr[1] = (np->orig_mac[0] >> 8) & 0xff;
+ dev->dev_addr[2] = (np->orig_mac[0] >> 16) & 0xff;
+ dev->dev_addr[3] = (np->orig_mac[0] >> 24) & 0xff;
+ dev->dev_addr[4] = (np->orig_mac[1] >> 0) & 0xff;
+ dev->dev_addr[5] = (np->orig_mac[1] >> 8) & 0xff;
+ /*
+ * Set orig mac address back to the reversed version.
+ * This flag will be cleared during low power transition.
+ * Therefore, we should always put back the reversed address.
+ */
+ np->orig_mac[0] = (dev->dev_addr[5] << 0) + (dev->dev_addr[4] << 8) +
+ (dev->dev_addr[3] << 16) + (dev->dev_addr[2] << 24);
+ np->orig_mac[1] = (dev->dev_addr[1] << 0) + (dev->dev_addr[0] << 8);
+ } else {
+ /* need to reverse mac address to correct order */
+ dev->dev_addr[0] = (np->orig_mac[1] >> 8) & 0xff;
+ dev->dev_addr[1] = (np->orig_mac[1] >> 0) & 0xff;
+ dev->dev_addr[2] = (np->orig_mac[0] >> 24) & 0xff;
+ dev->dev_addr[3] = (np->orig_mac[0] >> 16) & 0xff;
+ dev->dev_addr[4] = (np->orig_mac[0] >> 8) & 0xff;
+ dev->dev_addr[5] = (np->orig_mac[0] >> 0) & 0xff;
+ writel(txreg|NVREG_TRANSMITPOLL_MAC_ADDR_REV, base + NvRegTransmitPoll);
+ dev_dbg(&pci_dev->dev,
+ "%s: set workaround bit for reversed mac addr\n",
+ __func__);
+ }
+ memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
+
+ if (!is_valid_ether_addr(dev->perm_addr)) {
+ /*
+ * Bad mac address. At least one bios sets the mac address
+ * to 01:23:45:67:89:ab
+ */
+ dev_err(&pci_dev->dev,
+ "Invalid MAC address detected: %pM - Please complain to your hardware vendor.\n",
+ dev->dev_addr);
+ random_ether_addr(dev->dev_addr);
+ dev_err(&pci_dev->dev,
+ "Using random MAC address: %pM\n", dev->dev_addr);
+ }
+
+ /* set mac address */
+ nv_copy_mac_to_hw(dev);
+
+ /* disable WOL */
+ writel(0, base + NvRegWakeUpFlags);
+ np->wolenabled = 0;
+ device_set_wakeup_enable(&pci_dev->dev, false);
+
+ if (id->driver_data & DEV_HAS_POWER_CNTRL) {
+
+ /* take phy and nic out of low power mode */
+ powerstate = readl(base + NvRegPowerState2);
+ powerstate &= ~NVREG_POWERSTATE2_POWERUP_MASK;
+ if ((id->driver_data & DEV_NEED_LOW_POWER_FIX) &&
+ pci_dev->revision >= 0xA3)
+ powerstate |= NVREG_POWERSTATE2_POWERUP_REV_A3;
+ writel(powerstate, base + NvRegPowerState2);
+ }
+
+ if (np->desc_ver == DESC_VER_1)
+ np->tx_flags = NV_TX_VALID;
+ else
+ np->tx_flags = NV_TX2_VALID;
+
+ np->msi_flags = 0;
+ if ((id->driver_data & DEV_HAS_MSI) && msi)
+ np->msi_flags |= NV_MSI_CAPABLE;
+
+ if ((id->driver_data & DEV_HAS_MSI_X) && msix) {
+ /* msix has had reported issues when modifying irqmask
+ as in the case of napi, therefore, disable for now
+ */
+#if 0
+ np->msi_flags |= NV_MSI_X_CAPABLE;
+#endif
+ }
+
+ if (optimization_mode == NV_OPTIMIZATION_MODE_CPU) {
+ np->irqmask = NVREG_IRQMASK_CPU;
+ if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
+ np->msi_flags |= 0x0001;
+ } else if (optimization_mode == NV_OPTIMIZATION_MODE_DYNAMIC &&
+ !(id->driver_data & DEV_NEED_TIMERIRQ)) {
+ /* start off in throughput mode */
+ np->irqmask = NVREG_IRQMASK_THROUGHPUT;
+ /* remove support for msix mode */
+ np->msi_flags &= ~NV_MSI_X_CAPABLE;
+ } else {
+ optimization_mode = NV_OPTIMIZATION_MODE_THROUGHPUT;
+ np->irqmask = NVREG_IRQMASK_THROUGHPUT;
+ if (np->msi_flags & NV_MSI_X_CAPABLE) /* set number of vectors */
+ np->msi_flags |= 0x0003;
+ }
+
+ if (id->driver_data & DEV_NEED_TIMERIRQ)
+ np->irqmask |= NVREG_IRQ_TIMER;
+ if (id->driver_data & DEV_NEED_LINKTIMER) {
+ np->need_linktimer = 1;
+ np->link_timeout = jiffies + LINK_TIMEOUT;
+ } else {
+ np->need_linktimer = 0;
+ }
+
+ /* Limit the number of tx's outstanding for hw bug */
+ if (id->driver_data & DEV_NEED_TX_LIMIT) {
+ np->tx_limit = 1;
+ if (((id->driver_data & DEV_NEED_TX_LIMIT2) == DEV_NEED_TX_LIMIT2) &&
+ pci_dev->revision >= 0xA2)
+ np->tx_limit = 0;
+ }
+
+ /* clear phy state and temporarily halt phy interrupts */
+ writel(0, base + NvRegMIIMask);
+ phystate = readl(base + NvRegAdapterControl);
+ if (phystate & NVREG_ADAPTCTL_RUNNING) {
+ phystate_orig = 1;
+ phystate &= ~NVREG_ADAPTCTL_RUNNING;
+ writel(phystate, base + NvRegAdapterControl);
+ }
+ writel(NVREG_MIISTAT_MASK_ALL, base + NvRegMIIStatus);
+
+ if (id->driver_data & DEV_HAS_MGMT_UNIT) {
+ /* management unit running on the mac? */
+ if ((readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_MGMT_ST) &&
+ (readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_SYNC_PHY_INIT) &&
+ nv_mgmt_acquire_sema(dev) &&
+ nv_mgmt_get_version(dev)) {
+ np->mac_in_use = 1;
+ if (np->mgmt_version > 0)
+ np->mac_in_use = readl(base + NvRegMgmtUnitControl) & NVREG_MGMTUNITCONTROL_INUSE;
+ /* management unit setup the phy already? */
+ if (np->mac_in_use &&
+ ((readl(base + NvRegTransmitterControl) & NVREG_XMITCTL_SYNC_MASK) ==
+ NVREG_XMITCTL_SYNC_PHY_INIT)) {
+ /* phy is inited by mgmt unit */
+ phyinitialized = 1;
+ } else {
+ /* we need to init the phy */
+ }
+ }
+ }
+
+ /* find a suitable phy */
+ for (i = 1; i <= 32; i++) {
+ int id1, id2;
+ int phyaddr = i & 0x1F;
+
+ spin_lock_irq(&np->lock);
+ id1 = mii_rw(dev, phyaddr, MII_PHYSID1, MII_READ);
+ spin_unlock_irq(&np->lock);
+ if (id1 < 0 || id1 == 0xffff)
+ continue;
+ spin_lock_irq(&np->lock);
+ id2 = mii_rw(dev, phyaddr, MII_PHYSID2, MII_READ);
+ spin_unlock_irq(&np->lock);
+ if (id2 < 0 || id2 == 0xffff)
+ continue;
+
+ np->phy_model = id2 & PHYID2_MODEL_MASK;
+ id1 = (id1 & PHYID1_OUI_MASK) << PHYID1_OUI_SHFT;
+ id2 = (id2 & PHYID2_OUI_MASK) >> PHYID2_OUI_SHFT;
+ np->phyaddr = phyaddr;
+ np->phy_oui = id1 | id2;
+
+ /* Realtek hardcoded phy id1 to all zero's on certain phys */
+ if (np->phy_oui == PHY_OUI_REALTEK2)
+ np->phy_oui = PHY_OUI_REALTEK;
+ /* Setup phy revision for Realtek */
+ if (np->phy_oui == PHY_OUI_REALTEK && np->phy_model == PHY_MODEL_REALTEK_8211)
+ np->phy_rev = mii_rw(dev, phyaddr, MII_RESV1, MII_READ) & PHY_REV_MASK;
+
+ break;
+ }
+ if (i == 33) {
+ dev_info(&pci_dev->dev, "open: Could not find a valid PHY\n");
+ goto out_error;
+ }
+
+ if (!phyinitialized) {
+ /* reset it */
+ phy_init(dev);
+ } else {
+ /* see if it is a gigabit phy */
+ u32 mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
+ if (mii_status & PHY_GIGABIT)
+ np->gigabit = PHY_GIGABIT;
+ }
+
+ /* set default link speed settings */
+ np->linkspeed = NVREG_LINKSPEED_FORCE|NVREG_LINKSPEED_10;
+ np->duplex = 0;
+ np->autoneg = 1;
+
+ err = register_netdev(dev);
+ if (err) {
+ dev_info(&pci_dev->dev, "unable to register netdev: %d\n", err);
+ goto out_error;
+ }
+
++ if (id->driver_data & DEV_HAS_VLAN)
++ nv_vlan_mode(dev, dev->features);
+
+ netif_carrier_off(dev);
+
+ dev_info(&pci_dev->dev, "ifname %s, PHY OUI 0x%x @ %d, addr %pM\n",
+ dev->name, np->phy_oui, np->phyaddr, dev->dev_addr);
+
+ dev_info(&pci_dev->dev, "%s%s%s%s%s%s%s%s%s%sdesc-v%u\n",
+ dev->features & NETIF_F_HIGHDMA ? "highdma " : "",
+ dev->features & (NETIF_F_IP_CSUM | NETIF_F_SG) ?
+ "csum " : "",
+ dev->features & (NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX) ?
+ "vlan " : "",
+ id->driver_data & DEV_HAS_POWER_CNTRL ? "pwrctl " : "",
+ id->driver_data & DEV_HAS_MGMT_UNIT ? "mgmt " : "",
+ id->driver_data & DEV_NEED_TIMERIRQ ? "timirq " : "",
+ np->gigabit == PHY_GIGABIT ? "gbit " : "",
+ np->need_linktimer ? "lnktim " : "",
+ np->msi_flags & NV_MSI_CAPABLE ? "msi " : "",
+ np->msi_flags & NV_MSI_X_CAPABLE ? "msi-x " : "",
+ np->desc_ver);
+
+ return 0;
+
+out_error:
+ if (phystate_orig)
+ writel(phystate|NVREG_ADAPTCTL_RUNNING, base + NvRegAdapterControl);
+ pci_set_drvdata(pci_dev, NULL);
+out_freering:
+ free_rings(dev);
+out_unmap:
+ iounmap(get_hwbase(dev));
+out_relreg:
+ pci_release_regions(pci_dev);
+out_disable:
+ pci_disable_device(pci_dev);
+out_free:
+ free_netdev(dev);
+out:
+ return err;
+}
+
+static void nv_restore_phy(struct net_device *dev)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u16 phy_reserved, mii_control;
+
+ if (np->phy_oui == PHY_OUI_REALTEK &&
+ np->phy_model == PHY_MODEL_REALTEK_8201 &&
+ phy_cross == NV_CROSSOVER_DETECTION_DISABLED) {
+ mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT3);
+ phy_reserved = mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, MII_READ);
+ phy_reserved &= ~PHY_REALTEK_INIT_MSK1;
+ phy_reserved |= PHY_REALTEK_INIT8;
+ mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG2, phy_reserved);
+ mii_rw(dev, np->phyaddr, PHY_REALTEK_INIT_REG1, PHY_REALTEK_INIT1);
+
+ /* restart auto negotiation */
+ mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
+ mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE);
+ mii_rw(dev, np->phyaddr, MII_BMCR, mii_control);
+ }
+}
+
+static void nv_restore_mac_addr(struct pci_dev *pci_dev)
+{
+ struct net_device *dev = pci_get_drvdata(pci_dev);
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+
+ /* special op: write back the misordered MAC address - otherwise
+ * the next nv_probe would see a wrong address.
+ */
+ writel(np->orig_mac[0], base + NvRegMacAddrA);
+ writel(np->orig_mac[1], base + NvRegMacAddrB);
+ writel(readl(base + NvRegTransmitPoll) & ~NVREG_TRANSMITPOLL_MAC_ADDR_REV,
+ base + NvRegTransmitPoll);
+}
+
+static void __devexit nv_remove(struct pci_dev *pci_dev)
+{
+ struct net_device *dev = pci_get_drvdata(pci_dev);
+
+ unregister_netdev(dev);
+
+ nv_restore_mac_addr(pci_dev);
+
+ /* restore any phy related changes */
+ nv_restore_phy(dev);
+
+ nv_mgmt_release_sema(dev);
+
+ /* free all structures */
+ free_rings(dev);
+ iounmap(get_hwbase(dev));
+ pci_release_regions(pci_dev);
+ pci_disable_device(pci_dev);
+ free_netdev(dev);
+ pci_set_drvdata(pci_dev, NULL);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int nv_suspend(struct device *device)
+{
+ struct pci_dev *pdev = to_pci_dev(device);
+ struct net_device *dev = pci_get_drvdata(pdev);
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ int i;
+
+ if (netif_running(dev)) {
+ /* Gross. */
+ nv_close(dev);
+ }
+ netif_device_detach(dev);
+
+ /* save non-pci configuration space */
+ for (i = 0; i <= np->register_size/sizeof(u32); i++)
+ np->saved_config_space[i] = readl(base + i*sizeof(u32));
+
+ return 0;
+}
+
+static int nv_resume(struct device *device)
+{
+ struct pci_dev *pdev = to_pci_dev(device);
+ struct net_device *dev = pci_get_drvdata(pdev);
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ int i, rc = 0;
+
+ /* restore non-pci configuration space */
+ for (i = 0; i <= np->register_size/sizeof(u32); i++)
+ writel(np->saved_config_space[i], base+i*sizeof(u32));
+
+ if (np->driver_data & DEV_NEED_MSI_FIX)
+ pci_write_config_dword(pdev, NV_MSI_PRIV_OFFSET, NV_MSI_PRIV_VALUE);
+
+ /* restore phy state, including autoneg */
+ phy_init(dev);
+
+ netif_device_attach(dev);
+ if (netif_running(dev)) {
+ rc = nv_open(dev);
+ nv_set_multicast(dev);
+ }
+ return rc;
+}
+
+static SIMPLE_DEV_PM_OPS(nv_pm_ops, nv_suspend, nv_resume);
+#define NV_PM_OPS (&nv_pm_ops)
+
+#else
+#define NV_PM_OPS NULL
+#endif /* CONFIG_PM_SLEEP */
+
+#ifdef CONFIG_PM
+static void nv_shutdown(struct pci_dev *pdev)
+{
+ struct net_device *dev = pci_get_drvdata(pdev);
+ struct fe_priv *np = netdev_priv(dev);
+
+ if (netif_running(dev))
+ nv_close(dev);
+
+ /*
+ * Restore the MAC so a kernel started by kexec won't get confused.
+ * If we really go for poweroff, we must not restore the MAC,
+ * otherwise the MAC for WOL will be reversed at least on some boards.
+ */
+ if (system_state != SYSTEM_POWER_OFF)
+ nv_restore_mac_addr(pdev);
+
+ pci_disable_device(pdev);
+ /*
+ * Apparently it is not possible to reinitialise from D3 hot,
+ * only put the device into D3 if we really go for poweroff.
+ */
+ if (system_state == SYSTEM_POWER_OFF) {
+ pci_wake_from_d3(pdev, np->wolenabled);
+ pci_set_power_state(pdev, PCI_D3hot);
+ }
+}
+#else
+#define nv_shutdown NULL
+#endif /* CONFIG_PM */
+
+static DEFINE_PCI_DEVICE_TABLE(pci_tbl) = {
+ { /* nForce Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x01C3),
+ .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
+ },
+ { /* nForce2 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x0066),
+ .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
+ },
+ { /* nForce3 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x00D6),
+ .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER,
+ },
+ { /* nForce3 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x0086),
+ .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
+ },
+ { /* nForce3 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x008C),
+ .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
+ },
+ { /* nForce3 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x00E6),
+ .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
+ },
+ { /* nForce3 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x00DF),
+ .driver_data = DEV_NEED_TIMERIRQ|DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM,
+ },
+ { /* CK804 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x0056),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
+ },
+ { /* CK804 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x0057),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
+ },
+ { /* MCP04 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x0037),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
+ },
+ { /* MCP04 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x0038),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_STATISTICS_V1|DEV_NEED_TX_LIMIT,
+ },
+ { /* MCP51 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x0268),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V1|DEV_NEED_LOW_POWER_FIX,
+ },
+ { /* MCP51 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x0269),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_STATISTICS_V1|DEV_NEED_LOW_POWER_FIX,
+ },
+ { /* MCP55 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x0372),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_VLAN|DEV_HAS_MSI|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_NEED_TX_LIMIT|DEV_NEED_MSI_FIX,
+ },
+ { /* MCP55 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x0373),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_VLAN|DEV_HAS_MSI|DEV_HAS_MSI_X|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_NEED_TX_LIMIT|DEV_NEED_MSI_FIX,
+ },
+ { /* MCP61 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x03E5),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_MSI_FIX,
+ },
+ { /* MCP61 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x03E6),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_MSI_FIX,
+ },
+ { /* MCP61 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x03EE),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_MSI_FIX,
+ },
+ { /* MCP61 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x03EF),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_MSI_FIX,
+ },
+ { /* MCP65 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x0450),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
+ },
+ { /* MCP65 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x0451),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
+ },
+ { /* MCP65 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x0452),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
+ },
+ { /* MCP65 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x0453),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_NEED_TX_LIMIT|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
+ },
+ { /* MCP67 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x054C),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
+ },
+ { /* MCP67 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x054D),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
+ },
+ { /* MCP67 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x054E),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
+ },
+ { /* MCP67 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x054F),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
+ },
+ { /* MCP73 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x07DC),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
+ },
+ { /* MCP73 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x07DD),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
+ },
+ { /* MCP73 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x07DE),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
+ },
+ { /* MCP73 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x07DF),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_HIGH_DMA|DEV_HAS_POWER_CNTRL|DEV_HAS_MSI|DEV_HAS_PAUSEFRAME_TX_V1|DEV_HAS_STATISTICS_V12|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE|DEV_NEED_MSI_FIX,
+ },
+ { /* MCP77 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x0760),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V2|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
+ },
+ { /* MCP77 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x0761),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V2|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
+ },
+ { /* MCP77 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x0762),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V2|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
+ },
+ { /* MCP77 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x0763),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V2|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_MGMT_UNIT|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
+ },
+ { /* MCP79 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x0AB0),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
+ },
+ { /* MCP79 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x0AB1),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
+ },
+ { /* MCP79 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x0AB2),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
+ },
+ { /* MCP79 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x0AB3),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_NEED_TX_LIMIT2|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX|DEV_NEED_MSI_FIX,
+ },
+ { /* MCP89 Ethernet Controller */
+ PCI_DEVICE(0x10DE, 0x0D7D),
+ .driver_data = DEV_NEED_LINKTIMER|DEV_HAS_LARGEDESC|DEV_HAS_CHECKSUM|DEV_HAS_HIGH_DMA|DEV_HAS_MSI|DEV_HAS_POWER_CNTRL|DEV_HAS_PAUSEFRAME_TX_V3|DEV_HAS_STATISTICS_V123|DEV_HAS_TEST_EXTENDED|DEV_HAS_CORRECT_MACADDR|DEV_HAS_COLLISION_FIX|DEV_HAS_GEAR_MODE|DEV_NEED_PHY_INIT_FIX,
+ },
+ {0,},
+};
+
+static struct pci_driver driver = {
+ .name = DRV_NAME,
+ .id_table = pci_tbl,
+ .probe = nv_probe,
+ .remove = __devexit_p(nv_remove),
+ .shutdown = nv_shutdown,
+ .driver.pm = NV_PM_OPS,
+};
+
+static int __init init_nic(void)
+{
+ return pci_register_driver(&driver);
+}
+
+static void __exit exit_nic(void)
+{
+ pci_unregister_driver(&driver);
+}
+
+module_param(max_interrupt_work, int, 0);
+MODULE_PARM_DESC(max_interrupt_work, "forcedeth maximum events handled per interrupt");
+module_param(optimization_mode, int, 0);
+MODULE_PARM_DESC(optimization_mode, "In throughput mode (0), every tx & rx packet will generate an interrupt. In CPU mode (1), interrupts are controlled by a timer. In dynamic mode (2), the mode toggles between throughput and CPU mode based on network load.");
+module_param(poll_interval, int, 0);
+MODULE_PARM_DESC(poll_interval, "Interval determines how frequent timer interrupt is generated by [(time_in_micro_secs * 100) / (2^10)]. Min is 0 and Max is 65535.");
+module_param(msi, int, 0);
+MODULE_PARM_DESC(msi, "MSI interrupts are enabled by setting to 1 and disabled by setting to 0.");
+module_param(msix, int, 0);
+MODULE_PARM_DESC(msix, "MSIX interrupts are enabled by setting to 1 and disabled by setting to 0.");
+module_param(dma_64bit, int, 0);
+MODULE_PARM_DESC(dma_64bit, "High DMA is enabled by setting to 1 and disabled by setting to 0.");
+module_param(phy_cross, int, 0);
+MODULE_PARM_DESC(phy_cross, "Phy crossover detection for Realtek 8201 phy is enabled by setting to 1 and disabled by setting to 0.");
+module_param(phy_power_down, int, 0);
+MODULE_PARM_DESC(phy_power_down, "Power down phy and disable link when interface is down (1), or leave phy powered up (0).");
+
+MODULE_AUTHOR("Manfred Spraul <manfred@colorfullife.com>");
+MODULE_DESCRIPTION("Reverse Engineered nForce ethernet driver");
+MODULE_LICENSE("GPL");
+
+MODULE_DEVICE_TABLE(pci, pci_tbl);
+
+module_init(init_nic);
+module_exit(exit_nic);
--- /dev/null
+/*
+ * SuperH Ethernet device driver
+ *
+ * Copyright (C) 2006-2008 Nobuhiro Iwamatsu
+ * Copyright (C) 2008-2009 Renesas Solutions Corp.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * The full GNU General Public License is included in this distribution in
+ * the file called "COPYING".
+ */
+
+#include <linux/init.h>
++#include <linux/interrupt.h>
+#include <linux/dma-mapping.h>
+#include <linux/etherdevice.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/mdio-bitbang.h>
+#include <linux/netdevice.h>
+#include <linux/phy.h>
+#include <linux/cache.h>
+#include <linux/io.h>
+#include <linux/pm_runtime.h>
+#include <linux/slab.h>
+#include <linux/ethtool.h>
+
+#include "sh_eth.h"
+
+#define SH_ETH_DEF_MSG_ENABLE \
+ (NETIF_MSG_LINK | \
+ NETIF_MSG_TIMER | \
+ NETIF_MSG_RX_ERR| \
+ NETIF_MSG_TX_ERR)
+
+/* There is CPU dependent code */
+#if defined(CONFIG_CPU_SUBTYPE_SH7724)
+#define SH_ETH_RESET_DEFAULT 1
+static void sh_eth_set_duplex(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ if (mdp->duplex) /* Full */
+ sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR);
+ else /* Half */
+ sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR);
+}
+
+static void sh_eth_set_rate(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ switch (mdp->speed) {
+ case 10: /* 10BASE */
+ sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_RTM, ECMR);
+ break;
+ case 100:/* 100BASE */
+ sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_RTM, ECMR);
+ break;
+ default:
+ break;
+ }
+}
+
+/* SH7724 */
+static struct sh_eth_cpu_data sh_eth_my_cpu_data = {
+ .set_duplex = sh_eth_set_duplex,
+ .set_rate = sh_eth_set_rate,
+
+ .ecsr_value = ECSR_PSRTO | ECSR_LCHNG | ECSR_ICD,
+ .ecsipr_value = ECSIPR_PSRTOIP | ECSIPR_LCHNGIP | ECSIPR_ICDIP,
+ .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x01ff009f,
+
+ .tx_check = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_RTO,
+ .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RDE |
+ EESR_RFRMER | EESR_TFE | EESR_TDE | EESR_ECI,
+ .tx_error_check = EESR_TWB | EESR_TABT | EESR_TDE | EESR_TFE,
+
+ .apr = 1,
+ .mpr = 1,
+ .tpauser = 1,
+ .hw_swap = 1,
+ .rpadir = 1,
+ .rpadir_value = 0x00020000, /* NET_IP_ALIGN assumed to be 2 */
+};
+#elif defined(CONFIG_CPU_SUBTYPE_SH7757)
+#define SH_ETH_HAS_BOTH_MODULES 1
+#define SH_ETH_HAS_TSU 1
+static void sh_eth_set_duplex(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ if (mdp->duplex) /* Full */
+ sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR);
+ else /* Half */
+ sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR);
+}
+
+static void sh_eth_set_rate(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ switch (mdp->speed) {
+ case 10: /* 10BASE */
+ sh_eth_write(ndev, 0, RTRATE);
+ break;
+ case 100:/* 100BASE */
+ sh_eth_write(ndev, 1, RTRATE);
+ break;
+ default:
+ break;
+ }
+}
+
+/* SH7757 */
+static struct sh_eth_cpu_data sh_eth_my_cpu_data = {
+ .set_duplex = sh_eth_set_duplex,
+ .set_rate = sh_eth_set_rate,
+
+ .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff,
+ .rmcr_value = 0x00000001,
+
+ .tx_check = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_RTO,
+ .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RDE |
+ EESR_RFRMER | EESR_TFE | EESR_TDE | EESR_ECI,
+ .tx_error_check = EESR_TWB | EESR_TABT | EESR_TDE | EESR_TFE,
+
+ .apr = 1,
+ .mpr = 1,
+ .tpauser = 1,
+ .hw_swap = 1,
+ .no_ade = 1,
+ .rpadir = 1,
+ .rpadir_value = 2 << 16,
+};
+
+#define SH_GIGA_ETH_BASE 0xfee00000
+#define GIGA_MALR(port) (SH_GIGA_ETH_BASE + 0x800 * (port) + 0x05c8)
+#define GIGA_MAHR(port) (SH_GIGA_ETH_BASE + 0x800 * (port) + 0x05c0)
+static void sh_eth_chip_reset_giga(struct net_device *ndev)
+{
+ int i;
+ unsigned long mahr[2], malr[2];
+
+ /* save MAHR and MALR */
+ for (i = 0; i < 2; i++) {
+ malr[i] = readl(GIGA_MALR(i));
+ mahr[i] = readl(GIGA_MAHR(i));
+ }
+
+ /* reset device */
+ writel(ARSTR_ARSTR, SH_GIGA_ETH_BASE + 0x1800);
+ mdelay(1);
+
+ /* restore MAHR and MALR */
+ for (i = 0; i < 2; i++) {
+ writel(malr[i], GIGA_MALR(i));
+ writel(mahr[i], GIGA_MAHR(i));
+ }
+}
+
+static int sh_eth_is_gether(struct sh_eth_private *mdp);
+static void sh_eth_reset(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ int cnt = 100;
+
+ if (sh_eth_is_gether(mdp)) {
+ sh_eth_write(ndev, 0x03, EDSR);
+ sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_GETHER,
+ EDMR);
+ while (cnt > 0) {
+ if (!(sh_eth_read(ndev, EDMR) & 0x3))
+ break;
+ mdelay(1);
+ cnt--;
+ }
+ if (cnt < 0)
+ printk(KERN_ERR "Device reset fail\n");
+
+ /* Table Init */
+ sh_eth_write(ndev, 0x0, TDLAR);
+ sh_eth_write(ndev, 0x0, TDFAR);
+ sh_eth_write(ndev, 0x0, TDFXR);
+ sh_eth_write(ndev, 0x0, TDFFR);
+ sh_eth_write(ndev, 0x0, RDLAR);
+ sh_eth_write(ndev, 0x0, RDFAR);
+ sh_eth_write(ndev, 0x0, RDFXR);
+ sh_eth_write(ndev, 0x0, RDFFR);
+ } else {
+ sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_ETHER,
+ EDMR);
+ mdelay(3);
+ sh_eth_write(ndev, sh_eth_read(ndev, EDMR) & ~EDMR_SRST_ETHER,
+ EDMR);
+ }
+}
+
+static void sh_eth_set_duplex_giga(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ if (mdp->duplex) /* Full */
+ sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR);
+ else /* Half */
+ sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR);
+}
+
+static void sh_eth_set_rate_giga(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ switch (mdp->speed) {
+ case 10: /* 10BASE */
+ sh_eth_write(ndev, 0x00000000, GECMR);
+ break;
+ case 100:/* 100BASE */
+ sh_eth_write(ndev, 0x00000010, GECMR);
+ break;
+ case 1000: /* 1000BASE */
+ sh_eth_write(ndev, 0x00000020, GECMR);
+ break;
+ default:
+ break;
+ }
+}
+
+/* SH7757(GETHERC) */
+static struct sh_eth_cpu_data sh_eth_my_cpu_data_giga = {
+ .chip_reset = sh_eth_chip_reset_giga,
+ .set_duplex = sh_eth_set_duplex_giga,
+ .set_rate = sh_eth_set_rate_giga,
+
+ .ecsr_value = ECSR_ICD | ECSR_MPD,
+ .ecsipr_value = ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP,
+ .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff,
+
+ .tx_check = EESR_TC1 | EESR_FTC,
+ .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT | \
+ EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE | \
+ EESR_ECI,
+ .tx_error_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_TDE | \
+ EESR_TFE,
+ .fdr_value = 0x0000072f,
+ .rmcr_value = 0x00000001,
+
+ .apr = 1,
+ .mpr = 1,
+ .tpauser = 1,
+ .bculr = 1,
+ .hw_swap = 1,
+ .rpadir = 1,
+ .rpadir_value = 2 << 16,
+ .no_trimd = 1,
+ .no_ade = 1,
+};
+
+static struct sh_eth_cpu_data *sh_eth_get_cpu_data(struct sh_eth_private *mdp)
+{
+ if (sh_eth_is_gether(mdp))
+ return &sh_eth_my_cpu_data_giga;
+ else
+ return &sh_eth_my_cpu_data;
+}
+
+#elif defined(CONFIG_CPU_SUBTYPE_SH7763)
+#define SH_ETH_HAS_TSU 1
+static void sh_eth_chip_reset(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ /* reset device */
+ sh_eth_tsu_write(mdp, ARSTR_ARSTR, ARSTR);
+ mdelay(1);
+}
+
+static void sh_eth_reset(struct net_device *ndev)
+{
+ int cnt = 100;
+
+ sh_eth_write(ndev, EDSR_ENALL, EDSR);
+ sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_GETHER, EDMR);
+ while (cnt > 0) {
+ if (!(sh_eth_read(ndev, EDMR) & 0x3))
+ break;
+ mdelay(1);
+ cnt--;
+ }
+ if (cnt == 0)
+ printk(KERN_ERR "Device reset fail\n");
+
+ /* Table Init */
+ sh_eth_write(ndev, 0x0, TDLAR);
+ sh_eth_write(ndev, 0x0, TDFAR);
+ sh_eth_write(ndev, 0x0, TDFXR);
+ sh_eth_write(ndev, 0x0, TDFFR);
+ sh_eth_write(ndev, 0x0, RDLAR);
+ sh_eth_write(ndev, 0x0, RDFAR);
+ sh_eth_write(ndev, 0x0, RDFXR);
+ sh_eth_write(ndev, 0x0, RDFFR);
+}
+
+static void sh_eth_set_duplex(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ if (mdp->duplex) /* Full */
+ sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR);
+ else /* Half */
+ sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR);
+}
+
+static void sh_eth_set_rate(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ switch (mdp->speed) {
+ case 10: /* 10BASE */
+ sh_eth_write(ndev, GECMR_10, GECMR);
+ break;
+ case 100:/* 100BASE */
+ sh_eth_write(ndev, GECMR_100, GECMR);
+ break;
+ case 1000: /* 1000BASE */
+ sh_eth_write(ndev, GECMR_1000, GECMR);
+ break;
+ default:
+ break;
+ }
+}
+
+/* sh7763 */
+static struct sh_eth_cpu_data sh_eth_my_cpu_data = {
+ .chip_reset = sh_eth_chip_reset,
+ .set_duplex = sh_eth_set_duplex,
+ .set_rate = sh_eth_set_rate,
+
+ .ecsr_value = ECSR_ICD | ECSR_MPD,
+ .ecsipr_value = ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP,
+ .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff,
+
+ .tx_check = EESR_TC1 | EESR_FTC,
+ .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT | \
+ EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE | \
+ EESR_ECI,
+ .tx_error_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_TDE | \
+ EESR_TFE,
+
+ .apr = 1,
+ .mpr = 1,
+ .tpauser = 1,
+ .bculr = 1,
+ .hw_swap = 1,
+ .no_trimd = 1,
+ .no_ade = 1,
+ .tsu = 1,
+};
+
+#elif defined(CONFIG_CPU_SUBTYPE_SH7619)
+#define SH_ETH_RESET_DEFAULT 1
+static struct sh_eth_cpu_data sh_eth_my_cpu_data = {
+ .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff,
+
+ .apr = 1,
+ .mpr = 1,
+ .tpauser = 1,
+ .hw_swap = 1,
+};
+#elif defined(CONFIG_CPU_SUBTYPE_SH7710) || defined(CONFIG_CPU_SUBTYPE_SH7712)
+#define SH_ETH_RESET_DEFAULT 1
+#define SH_ETH_HAS_TSU 1
+static struct sh_eth_cpu_data sh_eth_my_cpu_data = {
+ .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff,
+ .tsu = 1,
+};
+#endif
+
+static void sh_eth_set_default_cpu_data(struct sh_eth_cpu_data *cd)
+{
+ if (!cd->ecsr_value)
+ cd->ecsr_value = DEFAULT_ECSR_INIT;
+
+ if (!cd->ecsipr_value)
+ cd->ecsipr_value = DEFAULT_ECSIPR_INIT;
+
+ if (!cd->fcftr_value)
+ cd->fcftr_value = DEFAULT_FIFO_F_D_RFF | \
+ DEFAULT_FIFO_F_D_RFD;
+
+ if (!cd->fdr_value)
+ cd->fdr_value = DEFAULT_FDR_INIT;
+
+ if (!cd->rmcr_value)
+ cd->rmcr_value = DEFAULT_RMCR_VALUE;
+
+ if (!cd->tx_check)
+ cd->tx_check = DEFAULT_TX_CHECK;
+
+ if (!cd->eesr_err_check)
+ cd->eesr_err_check = DEFAULT_EESR_ERR_CHECK;
+
+ if (!cd->tx_error_check)
+ cd->tx_error_check = DEFAULT_TX_ERROR_CHECK;
+}
+
+#if defined(SH_ETH_RESET_DEFAULT)
+/* Chip Reset */
+static void sh_eth_reset(struct net_device *ndev)
+{
+ sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_ETHER, EDMR);
+ mdelay(3);
+ sh_eth_write(ndev, sh_eth_read(ndev, EDMR) & ~EDMR_SRST_ETHER, EDMR);
+}
+#endif
+
+#if defined(CONFIG_CPU_SH4)
+static void sh_eth_set_receive_align(struct sk_buff *skb)
+{
+ int reserve;
+
+ reserve = SH4_SKB_RX_ALIGN - ((u32)skb->data & (SH4_SKB_RX_ALIGN - 1));
+ if (reserve)
+ skb_reserve(skb, reserve);
+}
+#else
+static void sh_eth_set_receive_align(struct sk_buff *skb)
+{
+ skb_reserve(skb, SH2_SH3_SKB_RX_ALIGN);
+}
+#endif
+
+
+/* CPU <-> EDMAC endian convert */
+static inline __u32 cpu_to_edmac(struct sh_eth_private *mdp, u32 x)
+{
+ switch (mdp->edmac_endian) {
+ case EDMAC_LITTLE_ENDIAN:
+ return cpu_to_le32(x);
+ case EDMAC_BIG_ENDIAN:
+ return cpu_to_be32(x);
+ }
+ return x;
+}
+
+static inline __u32 edmac_to_cpu(struct sh_eth_private *mdp, u32 x)
+{
+ switch (mdp->edmac_endian) {
+ case EDMAC_LITTLE_ENDIAN:
+ return le32_to_cpu(x);
+ case EDMAC_BIG_ENDIAN:
+ return be32_to_cpu(x);
+ }
+ return x;
+}
+
+/*
+ * Program the hardware MAC address from dev->dev_addr.
+ */
+static void update_mac_address(struct net_device *ndev)
+{
+ sh_eth_write(ndev,
+ (ndev->dev_addr[0] << 24) | (ndev->dev_addr[1] << 16) |
+ (ndev->dev_addr[2] << 8) | (ndev->dev_addr[3]), MAHR);
+ sh_eth_write(ndev,
+ (ndev->dev_addr[4] << 8) | (ndev->dev_addr[5]), MALR);
+}
+
+/*
+ * Get MAC address from SuperH MAC address register
+ *
+ * SuperH's Ethernet device doesn't have 'ROM' to MAC address.
+ * This driver get MAC address that use by bootloader(U-boot or sh-ipl+g).
+ * When you want use this device, you must set MAC address in bootloader.
+ *
+ */
+static void read_mac_address(struct net_device *ndev, unsigned char *mac)
+{
+ if (mac[0] || mac[1] || mac[2] || mac[3] || mac[4] || mac[5]) {
+ memcpy(ndev->dev_addr, mac, 6);
+ } else {
+ ndev->dev_addr[0] = (sh_eth_read(ndev, MAHR) >> 24);
+ ndev->dev_addr[1] = (sh_eth_read(ndev, MAHR) >> 16) & 0xFF;
+ ndev->dev_addr[2] = (sh_eth_read(ndev, MAHR) >> 8) & 0xFF;
+ ndev->dev_addr[3] = (sh_eth_read(ndev, MAHR) & 0xFF);
+ ndev->dev_addr[4] = (sh_eth_read(ndev, MALR) >> 8) & 0xFF;
+ ndev->dev_addr[5] = (sh_eth_read(ndev, MALR) & 0xFF);
+ }
+}
+
+static int sh_eth_is_gether(struct sh_eth_private *mdp)
+{
+ if (mdp->reg_offset == sh_eth_offset_gigabit)
+ return 1;
+ else
+ return 0;
+}
+
+static unsigned long sh_eth_get_edtrr_trns(struct sh_eth_private *mdp)
+{
+ if (sh_eth_is_gether(mdp))
+ return EDTRR_TRNS_GETHER;
+ else
+ return EDTRR_TRNS_ETHER;
+}
+
+struct bb_info {
+ void (*set_gate)(unsigned long addr);
+ struct mdiobb_ctrl ctrl;
+ u32 addr;
+ u32 mmd_msk;/* MMD */
+ u32 mdo_msk;
+ u32 mdi_msk;
+ u32 mdc_msk;
+};
+
+/* PHY bit set */
+static void bb_set(u32 addr, u32 msk)
+{
+ writel(readl(addr) | msk, addr);
+}
+
+/* PHY bit clear */
+static void bb_clr(u32 addr, u32 msk)
+{
+ writel((readl(addr) & ~msk), addr);
+}
+
+/* PHY bit read */
+static int bb_read(u32 addr, u32 msk)
+{
+ return (readl(addr) & msk) != 0;
+}
+
+/* Data I/O pin control */
+static void sh_mmd_ctrl(struct mdiobb_ctrl *ctrl, int bit)
+{
+ struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
+
+ if (bitbang->set_gate)
+ bitbang->set_gate(bitbang->addr);
+
+ if (bit)
+ bb_set(bitbang->addr, bitbang->mmd_msk);
+ else
+ bb_clr(bitbang->addr, bitbang->mmd_msk);
+}
+
+/* Set bit data*/
+static void sh_set_mdio(struct mdiobb_ctrl *ctrl, int bit)
+{
+ struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
+
+ if (bitbang->set_gate)
+ bitbang->set_gate(bitbang->addr);
+
+ if (bit)
+ bb_set(bitbang->addr, bitbang->mdo_msk);
+ else
+ bb_clr(bitbang->addr, bitbang->mdo_msk);
+}
+
+/* Get bit data*/
+static int sh_get_mdio(struct mdiobb_ctrl *ctrl)
+{
+ struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
+
+ if (bitbang->set_gate)
+ bitbang->set_gate(bitbang->addr);
+
+ return bb_read(bitbang->addr, bitbang->mdi_msk);
+}
+
+/* MDC pin control */
+static void sh_mdc_ctrl(struct mdiobb_ctrl *ctrl, int bit)
+{
+ struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
+
+ if (bitbang->set_gate)
+ bitbang->set_gate(bitbang->addr);
+
+ if (bit)
+ bb_set(bitbang->addr, bitbang->mdc_msk);
+ else
+ bb_clr(bitbang->addr, bitbang->mdc_msk);
+}
+
+/* mdio bus control struct */
+static struct mdiobb_ops bb_ops = {
+ .owner = THIS_MODULE,
+ .set_mdc = sh_mdc_ctrl,
+ .set_mdio_dir = sh_mmd_ctrl,
+ .set_mdio_data = sh_set_mdio,
+ .get_mdio_data = sh_get_mdio,
+};
+
+/* free skb and descriptor buffer */
+static void sh_eth_ring_free(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ int i;
+
+ /* Free Rx skb ringbuffer */
+ if (mdp->rx_skbuff) {
+ for (i = 0; i < RX_RING_SIZE; i++) {
+ if (mdp->rx_skbuff[i])
+ dev_kfree_skb(mdp->rx_skbuff[i]);
+ }
+ }
+ kfree(mdp->rx_skbuff);
+
+ /* Free Tx skb ringbuffer */
+ if (mdp->tx_skbuff) {
+ for (i = 0; i < TX_RING_SIZE; i++) {
+ if (mdp->tx_skbuff[i])
+ dev_kfree_skb(mdp->tx_skbuff[i]);
+ }
+ }
+ kfree(mdp->tx_skbuff);
+}
+
+/* format skb and descriptor buffer */
+static void sh_eth_ring_format(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ int i;
+ struct sk_buff *skb;
+ struct sh_eth_rxdesc *rxdesc = NULL;
+ struct sh_eth_txdesc *txdesc = NULL;
+ int rx_ringsize = sizeof(*rxdesc) * RX_RING_SIZE;
+ int tx_ringsize = sizeof(*txdesc) * TX_RING_SIZE;
+
+ mdp->cur_rx = mdp->cur_tx = 0;
+ mdp->dirty_rx = mdp->dirty_tx = 0;
+
+ memset(mdp->rx_ring, 0, rx_ringsize);
+
+ /* build Rx ring buffer */
+ for (i = 0; i < RX_RING_SIZE; i++) {
+ /* skb */
+ mdp->rx_skbuff[i] = NULL;
+ skb = dev_alloc_skb(mdp->rx_buf_sz);
+ mdp->rx_skbuff[i] = skb;
+ if (skb == NULL)
+ break;
+ dma_map_single(&ndev->dev, skb->tail, mdp->rx_buf_sz,
+ DMA_FROM_DEVICE);
+ skb->dev = ndev; /* Mark as being used by this device. */
+ sh_eth_set_receive_align(skb);
+
+ /* RX descriptor */
+ rxdesc = &mdp->rx_ring[i];
+ rxdesc->addr = virt_to_phys(PTR_ALIGN(skb->data, 4));
+ rxdesc->status = cpu_to_edmac(mdp, RD_RACT | RD_RFP);
+
+ /* The size of the buffer is 16 byte boundary. */
+ rxdesc->buffer_length = ALIGN(mdp->rx_buf_sz, 16);
+ /* Rx descriptor address set */
+ if (i == 0) {
+ sh_eth_write(ndev, mdp->rx_desc_dma, RDLAR);
+ if (sh_eth_is_gether(mdp))
+ sh_eth_write(ndev, mdp->rx_desc_dma, RDFAR);
+ }
+ }
+
+ mdp->dirty_rx = (u32) (i - RX_RING_SIZE);
+
+ /* Mark the last entry as wrapping the ring. */
+ rxdesc->status |= cpu_to_edmac(mdp, RD_RDEL);
+
+ memset(mdp->tx_ring, 0, tx_ringsize);
+
+ /* build Tx ring buffer */
+ for (i = 0; i < TX_RING_SIZE; i++) {
+ mdp->tx_skbuff[i] = NULL;
+ txdesc = &mdp->tx_ring[i];
+ txdesc->status = cpu_to_edmac(mdp, TD_TFP);
+ txdesc->buffer_length = 0;
+ if (i == 0) {
+ /* Tx descriptor address set */
+ sh_eth_write(ndev, mdp->tx_desc_dma, TDLAR);
+ if (sh_eth_is_gether(mdp))
+ sh_eth_write(ndev, mdp->tx_desc_dma, TDFAR);
+ }
+ }
+
+ txdesc->status |= cpu_to_edmac(mdp, TD_TDLE);
+}
+
+/* Get skb and descriptor buffer */
+static int sh_eth_ring_init(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ int rx_ringsize, tx_ringsize, ret = 0;
+
+ /*
+ * +26 gets the maximum ethernet encapsulation, +7 & ~7 because the
+ * card needs room to do 8 byte alignment, +2 so we can reserve
+ * the first 2 bytes, and +16 gets room for the status word from the
+ * card.
+ */
+ mdp->rx_buf_sz = (ndev->mtu <= 1492 ? PKT_BUF_SZ :
+ (((ndev->mtu + 26 + 7) & ~7) + 2 + 16));
+ if (mdp->cd->rpadir)
+ mdp->rx_buf_sz += NET_IP_ALIGN;
+
+ /* Allocate RX and TX skb rings */
+ mdp->rx_skbuff = kmalloc(sizeof(*mdp->rx_skbuff) * RX_RING_SIZE,
+ GFP_KERNEL);
+ if (!mdp->rx_skbuff) {
+ dev_err(&ndev->dev, "Cannot allocate Rx skb\n");
+ ret = -ENOMEM;
+ return ret;
+ }
+
+ mdp->tx_skbuff = kmalloc(sizeof(*mdp->tx_skbuff) * TX_RING_SIZE,
+ GFP_KERNEL);
+ if (!mdp->tx_skbuff) {
+ dev_err(&ndev->dev, "Cannot allocate Tx skb\n");
+ ret = -ENOMEM;
+ goto skb_ring_free;
+ }
+
+ /* Allocate all Rx descriptors. */
+ rx_ringsize = sizeof(struct sh_eth_rxdesc) * RX_RING_SIZE;
+ mdp->rx_ring = dma_alloc_coherent(NULL, rx_ringsize, &mdp->rx_desc_dma,
+ GFP_KERNEL);
+
+ if (!mdp->rx_ring) {
+ dev_err(&ndev->dev, "Cannot allocate Rx Ring (size %d bytes)\n",
+ rx_ringsize);
+ ret = -ENOMEM;
+ goto desc_ring_free;
+ }
+
+ mdp->dirty_rx = 0;
+
+ /* Allocate all Tx descriptors. */
+ tx_ringsize = sizeof(struct sh_eth_txdesc) * TX_RING_SIZE;
+ mdp->tx_ring = dma_alloc_coherent(NULL, tx_ringsize, &mdp->tx_desc_dma,
+ GFP_KERNEL);
+ if (!mdp->tx_ring) {
+ dev_err(&ndev->dev, "Cannot allocate Tx Ring (size %d bytes)\n",
+ tx_ringsize);
+ ret = -ENOMEM;
+ goto desc_ring_free;
+ }
+ return ret;
+
+desc_ring_free:
+ /* free DMA buffer */
+ dma_free_coherent(NULL, rx_ringsize, mdp->rx_ring, mdp->rx_desc_dma);
+
+skb_ring_free:
+ /* Free Rx and Tx skb ring buffer */
+ sh_eth_ring_free(ndev);
+
+ return ret;
+}
+
+static int sh_eth_dev_init(struct net_device *ndev)
+{
+ int ret = 0;
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ u_int32_t rx_int_var, tx_int_var;
+ u32 val;
+
+ /* Soft Reset */
+ sh_eth_reset(ndev);
+
+ /* Descriptor format */
+ sh_eth_ring_format(ndev);
+ if (mdp->cd->rpadir)
+ sh_eth_write(ndev, mdp->cd->rpadir_value, RPADIR);
+
+ /* all sh_eth int mask */
+ sh_eth_write(ndev, 0, EESIPR);
+
+#if defined(__LITTLE_ENDIAN__)
+ if (mdp->cd->hw_swap)
+ sh_eth_write(ndev, EDMR_EL, EDMR);
+ else
+#endif
+ sh_eth_write(ndev, 0, EDMR);
+
+ /* FIFO size set */
+ sh_eth_write(ndev, mdp->cd->fdr_value, FDR);
+ sh_eth_write(ndev, 0, TFTR);
+
+ /* Frame recv control */
+ sh_eth_write(ndev, mdp->cd->rmcr_value, RMCR);
+
+ rx_int_var = mdp->rx_int_var = DESC_I_RINT8 | DESC_I_RINT5;
+ tx_int_var = mdp->tx_int_var = DESC_I_TINT2;
+ sh_eth_write(ndev, rx_int_var | tx_int_var, TRSCER);
+
+ if (mdp->cd->bculr)
+ sh_eth_write(ndev, 0x800, BCULR); /* Burst sycle set */
+
+ sh_eth_write(ndev, mdp->cd->fcftr_value, FCFTR);
+
+ if (!mdp->cd->no_trimd)
+ sh_eth_write(ndev, 0, TRIMD);
+
+ /* Recv frame limit set register */
+ sh_eth_write(ndev, RFLR_VALUE, RFLR);
+
+ sh_eth_write(ndev, sh_eth_read(ndev, EESR), EESR);
+ sh_eth_write(ndev, mdp->cd->eesipr_value, EESIPR);
+
+ /* PAUSE Prohibition */
+ val = (sh_eth_read(ndev, ECMR) & ECMR_DM) |
+ ECMR_ZPF | (mdp->duplex ? ECMR_DM : 0) | ECMR_TE | ECMR_RE;
+
+ sh_eth_write(ndev, val, ECMR);
+
+ if (mdp->cd->set_rate)
+ mdp->cd->set_rate(ndev);
+
+ /* E-MAC Status Register clear */
+ sh_eth_write(ndev, mdp->cd->ecsr_value, ECSR);
+
+ /* E-MAC Interrupt Enable register */
+ sh_eth_write(ndev, mdp->cd->ecsipr_value, ECSIPR);
+
+ /* Set MAC address */
+ update_mac_address(ndev);
+
+ /* mask reset */
+ if (mdp->cd->apr)
+ sh_eth_write(ndev, APR_AP, APR);
+ if (mdp->cd->mpr)
+ sh_eth_write(ndev, MPR_MP, MPR);
+ if (mdp->cd->tpauser)
+ sh_eth_write(ndev, TPAUSER_UNLIMITED, TPAUSER);
+
+ /* Setting the Rx mode will start the Rx process. */
+ sh_eth_write(ndev, EDRRR_R, EDRRR);
+
+ netif_start_queue(ndev);
+
+ return ret;
+}
+
+/* free Tx skb function */
+static int sh_eth_txfree(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ struct sh_eth_txdesc *txdesc;
+ int freeNum = 0;
+ int entry = 0;
+
+ for (; mdp->cur_tx - mdp->dirty_tx > 0; mdp->dirty_tx++) {
+ entry = mdp->dirty_tx % TX_RING_SIZE;
+ txdesc = &mdp->tx_ring[entry];
+ if (txdesc->status & cpu_to_edmac(mdp, TD_TACT))
+ break;
+ /* Free the original skb. */
+ if (mdp->tx_skbuff[entry]) {
+ dma_unmap_single(&ndev->dev, txdesc->addr,
+ txdesc->buffer_length, DMA_TO_DEVICE);
+ dev_kfree_skb_irq(mdp->tx_skbuff[entry]);
+ mdp->tx_skbuff[entry] = NULL;
+ freeNum++;
+ }
+ txdesc->status = cpu_to_edmac(mdp, TD_TFP);
+ if (entry >= TX_RING_SIZE - 1)
+ txdesc->status |= cpu_to_edmac(mdp, TD_TDLE);
+
+ mdp->stats.tx_packets++;
+ mdp->stats.tx_bytes += txdesc->buffer_length;
+ }
+ return freeNum;
+}
+
+/* Packet receive function */
+static int sh_eth_rx(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ struct sh_eth_rxdesc *rxdesc;
+
+ int entry = mdp->cur_rx % RX_RING_SIZE;
+ int boguscnt = (mdp->dirty_rx + RX_RING_SIZE) - mdp->cur_rx;
+ struct sk_buff *skb;
+ u16 pkt_len = 0;
+ u32 desc_status;
+
+ rxdesc = &mdp->rx_ring[entry];
+ while (!(rxdesc->status & cpu_to_edmac(mdp, RD_RACT))) {
+ desc_status = edmac_to_cpu(mdp, rxdesc->status);
+ pkt_len = rxdesc->frame_length;
+
+ if (--boguscnt < 0)
+ break;
+
+ if (!(desc_status & RDFEND))
+ mdp->stats.rx_length_errors++;
+
+ if (desc_status & (RD_RFS1 | RD_RFS2 | RD_RFS3 | RD_RFS4 |
+ RD_RFS5 | RD_RFS6 | RD_RFS10)) {
+ mdp->stats.rx_errors++;
+ if (desc_status & RD_RFS1)
+ mdp->stats.rx_crc_errors++;
+ if (desc_status & RD_RFS2)
+ mdp->stats.rx_frame_errors++;
+ if (desc_status & RD_RFS3)
+ mdp->stats.rx_length_errors++;
+ if (desc_status & RD_RFS4)
+ mdp->stats.rx_length_errors++;
+ if (desc_status & RD_RFS6)
+ mdp->stats.rx_missed_errors++;
+ if (desc_status & RD_RFS10)
+ mdp->stats.rx_over_errors++;
+ } else {
+ if (!mdp->cd->hw_swap)
+ sh_eth_soft_swap(
+ phys_to_virt(ALIGN(rxdesc->addr, 4)),
+ pkt_len + 2);
+ skb = mdp->rx_skbuff[entry];
+ mdp->rx_skbuff[entry] = NULL;
+ if (mdp->cd->rpadir)
+ skb_reserve(skb, NET_IP_ALIGN);
+ skb_put(skb, pkt_len);
+ skb->protocol = eth_type_trans(skb, ndev);
+ netif_rx(skb);
+ mdp->stats.rx_packets++;
+ mdp->stats.rx_bytes += pkt_len;
+ }
+ rxdesc->status |= cpu_to_edmac(mdp, RD_RACT);
+ entry = (++mdp->cur_rx) % RX_RING_SIZE;
+ rxdesc = &mdp->rx_ring[entry];
+ }
+
+ /* Refill the Rx ring buffers. */
+ for (; mdp->cur_rx - mdp->dirty_rx > 0; mdp->dirty_rx++) {
+ entry = mdp->dirty_rx % RX_RING_SIZE;
+ rxdesc = &mdp->rx_ring[entry];
+ /* The size of the buffer is 16 byte boundary. */
+ rxdesc->buffer_length = ALIGN(mdp->rx_buf_sz, 16);
+
+ if (mdp->rx_skbuff[entry] == NULL) {
+ skb = dev_alloc_skb(mdp->rx_buf_sz);
+ mdp->rx_skbuff[entry] = skb;
+ if (skb == NULL)
+ break; /* Better luck next round. */
+ dma_map_single(&ndev->dev, skb->tail, mdp->rx_buf_sz,
+ DMA_FROM_DEVICE);
+ skb->dev = ndev;
+ sh_eth_set_receive_align(skb);
+
+ skb_checksum_none_assert(skb);
+ rxdesc->addr = virt_to_phys(PTR_ALIGN(skb->data, 4));
+ }
+ if (entry >= RX_RING_SIZE - 1)
+ rxdesc->status |=
+ cpu_to_edmac(mdp, RD_RACT | RD_RFP | RD_RDEL);
+ else
+ rxdesc->status |=
+ cpu_to_edmac(mdp, RD_RACT | RD_RFP);
+ }
+
+ /* Restart Rx engine if stopped. */
+ /* If we don't need to check status, don't. -KDU */
+ if (!(sh_eth_read(ndev, EDRRR) & EDRRR_R))
+ sh_eth_write(ndev, EDRRR_R, EDRRR);
+
+ return 0;
+}
+
+static void sh_eth_rcv_snd_disable(struct net_device *ndev)
+{
+ /* disable tx and rx */
+ sh_eth_write(ndev, sh_eth_read(ndev, ECMR) &
+ ~(ECMR_RE | ECMR_TE), ECMR);
+}
+
+static void sh_eth_rcv_snd_enable(struct net_device *ndev)
+{
+ /* enable tx and rx */
+ sh_eth_write(ndev, sh_eth_read(ndev, ECMR) |
+ (ECMR_RE | ECMR_TE), ECMR);
+}
+
+/* error control function */
+static void sh_eth_error(struct net_device *ndev, int intr_status)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ u32 felic_stat;
+ u32 link_stat;
+ u32 mask;
+
+ if (intr_status & EESR_ECI) {
+ felic_stat = sh_eth_read(ndev, ECSR);
+ sh_eth_write(ndev, felic_stat, ECSR); /* clear int */
+ if (felic_stat & ECSR_ICD)
+ mdp->stats.tx_carrier_errors++;
+ if (felic_stat & ECSR_LCHNG) {
+ /* Link Changed */
+ if (mdp->cd->no_psr || mdp->no_ether_link) {
+ if (mdp->link == PHY_DOWN)
+ link_stat = 0;
+ else
+ link_stat = PHY_ST_LINK;
+ } else {
+ link_stat = (sh_eth_read(ndev, PSR));
+ if (mdp->ether_link_active_low)
+ link_stat = ~link_stat;
+ }
+ if (!(link_stat & PHY_ST_LINK))
+ sh_eth_rcv_snd_disable(ndev);
+ else {
+ /* Link Up */
+ sh_eth_write(ndev, sh_eth_read(ndev, EESIPR) &
+ ~DMAC_M_ECI, EESIPR);
+ /*clear int */
+ sh_eth_write(ndev, sh_eth_read(ndev, ECSR),
+ ECSR);
+ sh_eth_write(ndev, sh_eth_read(ndev, EESIPR) |
+ DMAC_M_ECI, EESIPR);
+ /* enable tx and rx */
+ sh_eth_rcv_snd_enable(ndev);
+ }
+ }
+ }
+
+ if (intr_status & EESR_TWB) {
+ /* Write buck end. unused write back interrupt */
+ if (intr_status & EESR_TABT) /* Transmit Abort int */
+ mdp->stats.tx_aborted_errors++;
+ if (netif_msg_tx_err(mdp))
+ dev_err(&ndev->dev, "Transmit Abort\n");
+ }
+
+ if (intr_status & EESR_RABT) {
+ /* Receive Abort int */
+ if (intr_status & EESR_RFRMER) {
+ /* Receive Frame Overflow int */
+ mdp->stats.rx_frame_errors++;
+ if (netif_msg_rx_err(mdp))
+ dev_err(&ndev->dev, "Receive Abort\n");
+ }
+ }
+
+ if (intr_status & EESR_TDE) {
+ /* Transmit Descriptor Empty int */
+ mdp->stats.tx_fifo_errors++;
+ if (netif_msg_tx_err(mdp))
+ dev_err(&ndev->dev, "Transmit Descriptor Empty\n");
+ }
+
+ if (intr_status & EESR_TFE) {
+ /* FIFO under flow */
+ mdp->stats.tx_fifo_errors++;
+ if (netif_msg_tx_err(mdp))
+ dev_err(&ndev->dev, "Transmit FIFO Under flow\n");
+ }
+
+ if (intr_status & EESR_RDE) {
+ /* Receive Descriptor Empty int */
+ mdp->stats.rx_over_errors++;
+
+ if (sh_eth_read(ndev, EDRRR) ^ EDRRR_R)
+ sh_eth_write(ndev, EDRRR_R, EDRRR);
+ if (netif_msg_rx_err(mdp))
+ dev_err(&ndev->dev, "Receive Descriptor Empty\n");
+ }
+
+ if (intr_status & EESR_RFE) {
+ /* Receive FIFO Overflow int */
+ mdp->stats.rx_fifo_errors++;
+ if (netif_msg_rx_err(mdp))
+ dev_err(&ndev->dev, "Receive FIFO Overflow\n");
+ }
+
+ if (!mdp->cd->no_ade && (intr_status & EESR_ADE)) {
+ /* Address Error */
+ mdp->stats.tx_fifo_errors++;
+ if (netif_msg_tx_err(mdp))
+ dev_err(&ndev->dev, "Address Error\n");
+ }
+
+ mask = EESR_TWB | EESR_TABT | EESR_ADE | EESR_TDE | EESR_TFE;
+ if (mdp->cd->no_ade)
+ mask &= ~EESR_ADE;
+ if (intr_status & mask) {
+ /* Tx error */
+ u32 edtrr = sh_eth_read(ndev, EDTRR);
+ /* dmesg */
+ dev_err(&ndev->dev, "TX error. status=%8.8x cur_tx=%8.8x ",
+ intr_status, mdp->cur_tx);
+ dev_err(&ndev->dev, "dirty_tx=%8.8x state=%8.8x EDTRR=%8.8x.\n",
+ mdp->dirty_tx, (u32) ndev->state, edtrr);
+ /* dirty buffer free */
+ sh_eth_txfree(ndev);
+
+ /* SH7712 BUG */
+ if (edtrr ^ sh_eth_get_edtrr_trns(mdp)) {
+ /* tx dma start */
+ sh_eth_write(ndev, sh_eth_get_edtrr_trns(mdp), EDTRR);
+ }
+ /* wakeup */
+ netif_wake_queue(ndev);
+ }
+}
+
+static irqreturn_t sh_eth_interrupt(int irq, void *netdev)
+{
+ struct net_device *ndev = netdev;
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ struct sh_eth_cpu_data *cd = mdp->cd;
+ irqreturn_t ret = IRQ_NONE;
+ u32 intr_status = 0;
+
+ spin_lock(&mdp->lock);
+
+ /* Get interrpt stat */
+ intr_status = sh_eth_read(ndev, EESR);
+ /* Clear interrupt */
+ if (intr_status & (EESR_FRC | EESR_RMAF | EESR_RRF |
+ EESR_RTLF | EESR_RTSF | EESR_PRE | EESR_CERF |
+ cd->tx_check | cd->eesr_err_check)) {
+ sh_eth_write(ndev, intr_status, EESR);
+ ret = IRQ_HANDLED;
+ } else
+ goto other_irq;
+
+ if (intr_status & (EESR_FRC | /* Frame recv*/
+ EESR_RMAF | /* Multi cast address recv*/
+ EESR_RRF | /* Bit frame recv */
+ EESR_RTLF | /* Long frame recv*/
+ EESR_RTSF | /* short frame recv */
+ EESR_PRE | /* PHY-LSI recv error */
+ EESR_CERF)){ /* recv frame CRC error */
+ sh_eth_rx(ndev);
+ }
+
+ /* Tx Check */
+ if (intr_status & cd->tx_check) {
+ sh_eth_txfree(ndev);
+ netif_wake_queue(ndev);
+ }
+
+ if (intr_status & cd->eesr_err_check)
+ sh_eth_error(ndev, intr_status);
+
+other_irq:
+ spin_unlock(&mdp->lock);
+
+ return ret;
+}
+
+static void sh_eth_timer(unsigned long data)
+{
+ struct net_device *ndev = (struct net_device *)data;
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ mod_timer(&mdp->timer, jiffies + (10 * HZ));
+}
+
+/* PHY state control function */
+static void sh_eth_adjust_link(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ struct phy_device *phydev = mdp->phydev;
+ int new_state = 0;
+
+ if (phydev->link != PHY_DOWN) {
+ if (phydev->duplex != mdp->duplex) {
+ new_state = 1;
+ mdp->duplex = phydev->duplex;
+ if (mdp->cd->set_duplex)
+ mdp->cd->set_duplex(ndev);
+ }
+
+ if (phydev->speed != mdp->speed) {
+ new_state = 1;
+ mdp->speed = phydev->speed;
+ if (mdp->cd->set_rate)
+ mdp->cd->set_rate(ndev);
+ }
+ if (mdp->link == PHY_DOWN) {
+ sh_eth_write(ndev,
+ (sh_eth_read(ndev, ECMR) & ~ECMR_TXF), ECMR);
+ new_state = 1;
+ mdp->link = phydev->link;
+ }
+ } else if (mdp->link) {
+ new_state = 1;
+ mdp->link = PHY_DOWN;
+ mdp->speed = 0;
+ mdp->duplex = -1;
+ }
+
+ if (new_state && netif_msg_link(mdp))
+ phy_print_status(phydev);
+}
+
+/* PHY init function */
+static int sh_eth_phy_init(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ char phy_id[MII_BUS_ID_SIZE + 3];
+ struct phy_device *phydev = NULL;
+
+ snprintf(phy_id, sizeof(phy_id), PHY_ID_FMT,
+ mdp->mii_bus->id , mdp->phy_id);
+
+ mdp->link = PHY_DOWN;
+ mdp->speed = 0;
+ mdp->duplex = -1;
+
+ /* Try connect to PHY */
+ phydev = phy_connect(ndev, phy_id, sh_eth_adjust_link,
+ 0, mdp->phy_interface);
+ if (IS_ERR(phydev)) {
+ dev_err(&ndev->dev, "phy_connect failed\n");
+ return PTR_ERR(phydev);
+ }
+
+ dev_info(&ndev->dev, "attached phy %i to driver %s\n",
+ phydev->addr, phydev->drv->name);
+
+ mdp->phydev = phydev;
+
+ return 0;
+}
+
+/* PHY control start function */
+static int sh_eth_phy_start(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ int ret;
+
+ ret = sh_eth_phy_init(ndev);
+ if (ret)
+ return ret;
+
+ /* reset phy - this also wakes it from PDOWN */
+ phy_write(mdp->phydev, MII_BMCR, BMCR_RESET);
+ phy_start(mdp->phydev);
+
+ return 0;
+}
+
+static int sh_eth_get_settings(struct net_device *ndev,
+ struct ethtool_cmd *ecmd)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&mdp->lock, flags);
+ ret = phy_ethtool_gset(mdp->phydev, ecmd);
+ spin_unlock_irqrestore(&mdp->lock, flags);
+
+ return ret;
+}
+
+static int sh_eth_set_settings(struct net_device *ndev,
+ struct ethtool_cmd *ecmd)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&mdp->lock, flags);
+
+ /* disable tx and rx */
+ sh_eth_rcv_snd_disable(ndev);
+
+ ret = phy_ethtool_sset(mdp->phydev, ecmd);
+ if (ret)
+ goto error_exit;
+
+ if (ecmd->duplex == DUPLEX_FULL)
+ mdp->duplex = 1;
+ else
+ mdp->duplex = 0;
+
+ if (mdp->cd->set_duplex)
+ mdp->cd->set_duplex(ndev);
+
+error_exit:
+ mdelay(1);
+
+ /* enable tx and rx */
+ sh_eth_rcv_snd_enable(ndev);
+
+ spin_unlock_irqrestore(&mdp->lock, flags);
+
+ return ret;
+}
+
+static int sh_eth_nway_reset(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&mdp->lock, flags);
+ ret = phy_start_aneg(mdp->phydev);
+ spin_unlock_irqrestore(&mdp->lock, flags);
+
+ return ret;
+}
+
+static u32 sh_eth_get_msglevel(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ return mdp->msg_enable;
+}
+
+static void sh_eth_set_msglevel(struct net_device *ndev, u32 value)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ mdp->msg_enable = value;
+}
+
+static const char sh_eth_gstrings_stats[][ETH_GSTRING_LEN] = {
+ "rx_current", "tx_current",
+ "rx_dirty", "tx_dirty",
+};
+#define SH_ETH_STATS_LEN ARRAY_SIZE(sh_eth_gstrings_stats)
+
+static int sh_eth_get_sset_count(struct net_device *netdev, int sset)
+{
+ switch (sset) {
+ case ETH_SS_STATS:
+ return SH_ETH_STATS_LEN;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static void sh_eth_get_ethtool_stats(struct net_device *ndev,
+ struct ethtool_stats *stats, u64 *data)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ int i = 0;
+
+ /* device-specific stats */
+ data[i++] = mdp->cur_rx;
+ data[i++] = mdp->cur_tx;
+ data[i++] = mdp->dirty_rx;
+ data[i++] = mdp->dirty_tx;
+}
+
+static void sh_eth_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
+{
+ switch (stringset) {
+ case ETH_SS_STATS:
+ memcpy(data, *sh_eth_gstrings_stats,
+ sizeof(sh_eth_gstrings_stats));
+ break;
+ }
+}
+
+static struct ethtool_ops sh_eth_ethtool_ops = {
+ .get_settings = sh_eth_get_settings,
+ .set_settings = sh_eth_set_settings,
+ .nway_reset = sh_eth_nway_reset,
+ .get_msglevel = sh_eth_get_msglevel,
+ .set_msglevel = sh_eth_set_msglevel,
+ .get_link = ethtool_op_get_link,
+ .get_strings = sh_eth_get_strings,
+ .get_ethtool_stats = sh_eth_get_ethtool_stats,
+ .get_sset_count = sh_eth_get_sset_count,
+};
+
+/* network device open function */
+static int sh_eth_open(struct net_device *ndev)
+{
+ int ret = 0;
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ pm_runtime_get_sync(&mdp->pdev->dev);
+
+ ret = request_irq(ndev->irq, sh_eth_interrupt,
+#if defined(CONFIG_CPU_SUBTYPE_SH7763) || \
+ defined(CONFIG_CPU_SUBTYPE_SH7764) || \
+ defined(CONFIG_CPU_SUBTYPE_SH7757)
+ IRQF_SHARED,
+#else
+ 0,
+#endif
+ ndev->name, ndev);
+ if (ret) {
+ dev_err(&ndev->dev, "Can not assign IRQ number\n");
+ return ret;
+ }
+
+ /* Descriptor set */
+ ret = sh_eth_ring_init(ndev);
+ if (ret)
+ goto out_free_irq;
+
+ /* device init */
+ ret = sh_eth_dev_init(ndev);
+ if (ret)
+ goto out_free_irq;
+
+ /* PHY control start*/
+ ret = sh_eth_phy_start(ndev);
+ if (ret)
+ goto out_free_irq;
+
+ /* Set the timer to check for link beat. */
+ init_timer(&mdp->timer);
+ mdp->timer.expires = (jiffies + (24 * HZ)) / 10;/* 2.4 sec. */
+ setup_timer(&mdp->timer, sh_eth_timer, (unsigned long)ndev);
+
+ return ret;
+
+out_free_irq:
+ free_irq(ndev->irq, ndev);
+ pm_runtime_put_sync(&mdp->pdev->dev);
+ return ret;
+}
+
+/* Timeout function */
+static void sh_eth_tx_timeout(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ struct sh_eth_rxdesc *rxdesc;
+ int i;
+
+ netif_stop_queue(ndev);
+
+ if (netif_msg_timer(mdp))
+ dev_err(&ndev->dev, "%s: transmit timed out, status %8.8x,"
+ " resetting...\n", ndev->name, (int)sh_eth_read(ndev, EESR));
+
+ /* tx_errors count up */
+ mdp->stats.tx_errors++;
+
+ /* timer off */
+ del_timer_sync(&mdp->timer);
+
+ /* Free all the skbuffs in the Rx queue. */
+ for (i = 0; i < RX_RING_SIZE; i++) {
+ rxdesc = &mdp->rx_ring[i];
+ rxdesc->status = 0;
+ rxdesc->addr = 0xBADF00D0;
+ if (mdp->rx_skbuff[i])
+ dev_kfree_skb(mdp->rx_skbuff[i]);
+ mdp->rx_skbuff[i] = NULL;
+ }
+ for (i = 0; i < TX_RING_SIZE; i++) {
+ if (mdp->tx_skbuff[i])
+ dev_kfree_skb(mdp->tx_skbuff[i]);
+ mdp->tx_skbuff[i] = NULL;
+ }
+
+ /* device init */
+ sh_eth_dev_init(ndev);
+
+ /* timer on */
+ mdp->timer.expires = (jiffies + (24 * HZ)) / 10;/* 2.4 sec. */
+ add_timer(&mdp->timer);
+}
+
+/* Packet transmit function */
+static int sh_eth_start_xmit(struct sk_buff *skb, struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ struct sh_eth_txdesc *txdesc;
+ u32 entry;
+ unsigned long flags;
+
+ spin_lock_irqsave(&mdp->lock, flags);
+ if ((mdp->cur_tx - mdp->dirty_tx) >= (TX_RING_SIZE - 4)) {
+ if (!sh_eth_txfree(ndev)) {
+ if (netif_msg_tx_queued(mdp))
+ dev_warn(&ndev->dev, "TxFD exhausted.\n");
+ netif_stop_queue(ndev);
+ spin_unlock_irqrestore(&mdp->lock, flags);
+ return NETDEV_TX_BUSY;
+ }
+ }
+ spin_unlock_irqrestore(&mdp->lock, flags);
+
+ entry = mdp->cur_tx % TX_RING_SIZE;
+ mdp->tx_skbuff[entry] = skb;
+ txdesc = &mdp->tx_ring[entry];
+ /* soft swap. */
+ if (!mdp->cd->hw_swap)
+ sh_eth_soft_swap(phys_to_virt(ALIGN(txdesc->addr, 4)),
+ skb->len + 2);
+ txdesc->addr = dma_map_single(&ndev->dev, skb->data, skb->len,
+ DMA_TO_DEVICE);
+ if (skb->len < ETHERSMALL)
+ txdesc->buffer_length = ETHERSMALL;
+ else
+ txdesc->buffer_length = skb->len;
+
+ if (entry >= TX_RING_SIZE - 1)
+ txdesc->status |= cpu_to_edmac(mdp, TD_TACT | TD_TDLE);
+ else
+ txdesc->status |= cpu_to_edmac(mdp, TD_TACT);
+
+ mdp->cur_tx++;
+
+ if (!(sh_eth_read(ndev, EDTRR) & sh_eth_get_edtrr_trns(mdp)))
+ sh_eth_write(ndev, sh_eth_get_edtrr_trns(mdp), EDTRR);
+
+ return NETDEV_TX_OK;
+}
+
+/* device close function */
+static int sh_eth_close(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ int ringsize;
+
+ netif_stop_queue(ndev);
+
+ /* Disable interrupts by clearing the interrupt mask. */
+ sh_eth_write(ndev, 0x0000, EESIPR);
+
+ /* Stop the chip's Tx and Rx processes. */
+ sh_eth_write(ndev, 0, EDTRR);
+ sh_eth_write(ndev, 0, EDRRR);
+
+ /* PHY Disconnect */
+ if (mdp->phydev) {
+ phy_stop(mdp->phydev);
+ phy_disconnect(mdp->phydev);
+ }
+
+ free_irq(ndev->irq, ndev);
+
+ del_timer_sync(&mdp->timer);
+
+ /* Free all the skbuffs in the Rx queue. */
+ sh_eth_ring_free(ndev);
+
+ /* free DMA buffer */
+ ringsize = sizeof(struct sh_eth_rxdesc) * RX_RING_SIZE;
+ dma_free_coherent(NULL, ringsize, mdp->rx_ring, mdp->rx_desc_dma);
+
+ /* free DMA buffer */
+ ringsize = sizeof(struct sh_eth_txdesc) * TX_RING_SIZE;
+ dma_free_coherent(NULL, ringsize, mdp->tx_ring, mdp->tx_desc_dma);
+
+ pm_runtime_put_sync(&mdp->pdev->dev);
+
+ return 0;
+}
+
+static struct net_device_stats *sh_eth_get_stats(struct net_device *ndev)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ pm_runtime_get_sync(&mdp->pdev->dev);
+
+ mdp->stats.tx_dropped += sh_eth_read(ndev, TROCR);
+ sh_eth_write(ndev, 0, TROCR); /* (write clear) */
+ mdp->stats.collisions += sh_eth_read(ndev, CDCR);
+ sh_eth_write(ndev, 0, CDCR); /* (write clear) */
+ mdp->stats.tx_carrier_errors += sh_eth_read(ndev, LCCR);
+ sh_eth_write(ndev, 0, LCCR); /* (write clear) */
+ if (sh_eth_is_gether(mdp)) {
+ mdp->stats.tx_carrier_errors += sh_eth_read(ndev, CERCR);
+ sh_eth_write(ndev, 0, CERCR); /* (write clear) */
+ mdp->stats.tx_carrier_errors += sh_eth_read(ndev, CEECR);
+ sh_eth_write(ndev, 0, CEECR); /* (write clear) */
+ } else {
+ mdp->stats.tx_carrier_errors += sh_eth_read(ndev, CNDCR);
+ sh_eth_write(ndev, 0, CNDCR); /* (write clear) */
+ }
+ pm_runtime_put_sync(&mdp->pdev->dev);
+
+ return &mdp->stats;
+}
+
+/* ioctl to device funciotn*/
+static int sh_eth_do_ioctl(struct net_device *ndev, struct ifreq *rq,
+ int cmd)
+{
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+ struct phy_device *phydev = mdp->phydev;
+
+ if (!netif_running(ndev))
+ return -EINVAL;
+
+ if (!phydev)
+ return -ENODEV;
+
+ return phy_mii_ioctl(phydev, rq, cmd);
+}
+
+#if defined(SH_ETH_HAS_TSU)
+/* Multicast reception directions set */
+static void sh_eth_set_multicast_list(struct net_device *ndev)
+{
+ if (ndev->flags & IFF_PROMISC) {
+ /* Set promiscuous. */
+ sh_eth_write(ndev, (sh_eth_read(ndev, ECMR) & ~ECMR_MCT) |
+ ECMR_PRM, ECMR);
+ } else {
+ /* Normal, unicast/broadcast-only mode. */
+ sh_eth_write(ndev, (sh_eth_read(ndev, ECMR) & ~ECMR_PRM) |
+ ECMR_MCT, ECMR);
+ }
+}
+#endif /* SH_ETH_HAS_TSU */
+
+/* SuperH's TSU register init function */
+static void sh_eth_tsu_init(struct sh_eth_private *mdp)
+{
+ sh_eth_tsu_write(mdp, 0, TSU_FWEN0); /* Disable forward(0->1) */
+ sh_eth_tsu_write(mdp, 0, TSU_FWEN1); /* Disable forward(1->0) */
+ sh_eth_tsu_write(mdp, 0, TSU_FCM); /* forward fifo 3k-3k */
+ sh_eth_tsu_write(mdp, 0xc, TSU_BSYSL0);
+ sh_eth_tsu_write(mdp, 0xc, TSU_BSYSL1);
+ sh_eth_tsu_write(mdp, 0, TSU_PRISL0);
+ sh_eth_tsu_write(mdp, 0, TSU_PRISL1);
+ sh_eth_tsu_write(mdp, 0, TSU_FWSL0);
+ sh_eth_tsu_write(mdp, 0, TSU_FWSL1);
+ sh_eth_tsu_write(mdp, TSU_FWSLC_POSTENU | TSU_FWSLC_POSTENL, TSU_FWSLC);
+ if (sh_eth_is_gether(mdp)) {
+ sh_eth_tsu_write(mdp, 0, TSU_QTAG0); /* Disable QTAG(0->1) */
+ sh_eth_tsu_write(mdp, 0, TSU_QTAG1); /* Disable QTAG(1->0) */
+ } else {
+ sh_eth_tsu_write(mdp, 0, TSU_QTAGM0); /* Disable QTAG(0->1) */
+ sh_eth_tsu_write(mdp, 0, TSU_QTAGM1); /* Disable QTAG(1->0) */
+ }
+ sh_eth_tsu_write(mdp, 0, TSU_FWSR); /* all interrupt status clear */
+ sh_eth_tsu_write(mdp, 0, TSU_FWINMK); /* Disable all interrupt */
+ sh_eth_tsu_write(mdp, 0, TSU_TEN); /* Disable all CAM entry */
+ sh_eth_tsu_write(mdp, 0, TSU_POST1); /* Disable CAM entry [ 0- 7] */
+ sh_eth_tsu_write(mdp, 0, TSU_POST2); /* Disable CAM entry [ 8-15] */
+ sh_eth_tsu_write(mdp, 0, TSU_POST3); /* Disable CAM entry [16-23] */
+ sh_eth_tsu_write(mdp, 0, TSU_POST4); /* Disable CAM entry [24-31] */
+}
+
+/* MDIO bus release function */
+static int sh_mdio_release(struct net_device *ndev)
+{
+ struct mii_bus *bus = dev_get_drvdata(&ndev->dev);
+
+ /* unregister mdio bus */
+ mdiobus_unregister(bus);
+
+ /* remove mdio bus info from net_device */
+ dev_set_drvdata(&ndev->dev, NULL);
+
+ /* free interrupts memory */
+ kfree(bus->irq);
+
+ /* free bitbang info */
+ free_mdio_bitbang(bus);
+
+ return 0;
+}
+
+/* MDIO bus init function */
+static int sh_mdio_init(struct net_device *ndev, int id,
+ struct sh_eth_plat_data *pd)
+{
+ int ret, i;
+ struct bb_info *bitbang;
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ /* create bit control struct for PHY */
+ bitbang = kzalloc(sizeof(struct bb_info), GFP_KERNEL);
+ if (!bitbang) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ /* bitbang init */
+ bitbang->addr = ndev->base_addr + mdp->reg_offset[PIR];
+ bitbang->set_gate = pd->set_mdio_gate;
+ bitbang->mdi_msk = 0x08;
+ bitbang->mdo_msk = 0x04;
+ bitbang->mmd_msk = 0x02;/* MMD */
+ bitbang->mdc_msk = 0x01;
+ bitbang->ctrl.ops = &bb_ops;
+
+ /* MII controller setting */
+ mdp->mii_bus = alloc_mdio_bitbang(&bitbang->ctrl);
+ if (!mdp->mii_bus) {
+ ret = -ENOMEM;
+ goto out_free_bitbang;
+ }
+
+ /* Hook up MII support for ethtool */
+ mdp->mii_bus->name = "sh_mii";
+ mdp->mii_bus->parent = &ndev->dev;
+ snprintf(mdp->mii_bus->id, MII_BUS_ID_SIZE, "%x", id);
+
+ /* PHY IRQ */
+ mdp->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL);
+ if (!mdp->mii_bus->irq) {
+ ret = -ENOMEM;
+ goto out_free_bus;
+ }
+
+ for (i = 0; i < PHY_MAX_ADDR; i++)
+ mdp->mii_bus->irq[i] = PHY_POLL;
+
+ /* regist mdio bus */
+ ret = mdiobus_register(mdp->mii_bus);
+ if (ret)
+ goto out_free_irq;
+
+ dev_set_drvdata(&ndev->dev, mdp->mii_bus);
+
+ return 0;
+
+out_free_irq:
+ kfree(mdp->mii_bus->irq);
+
+out_free_bus:
+ free_mdio_bitbang(mdp->mii_bus);
+
+out_free_bitbang:
+ kfree(bitbang);
+
+out:
+ return ret;
+}
+
+static const u16 *sh_eth_get_register_offset(int register_type)
+{
+ const u16 *reg_offset = NULL;
+
+ switch (register_type) {
+ case SH_ETH_REG_GIGABIT:
+ reg_offset = sh_eth_offset_gigabit;
+ break;
+ case SH_ETH_REG_FAST_SH4:
+ reg_offset = sh_eth_offset_fast_sh4;
+ break;
+ case SH_ETH_REG_FAST_SH3_SH2:
+ reg_offset = sh_eth_offset_fast_sh3_sh2;
+ break;
+ default:
+ printk(KERN_ERR "Unknown register type (%d)\n", register_type);
+ break;
+ }
+
+ return reg_offset;
+}
+
+static const struct net_device_ops sh_eth_netdev_ops = {
+ .ndo_open = sh_eth_open,
+ .ndo_stop = sh_eth_close,
+ .ndo_start_xmit = sh_eth_start_xmit,
+ .ndo_get_stats = sh_eth_get_stats,
+#if defined(SH_ETH_HAS_TSU)
+ .ndo_set_rx_mode = sh_eth_set_multicast_list,
+#endif
+ .ndo_tx_timeout = sh_eth_tx_timeout,
+ .ndo_do_ioctl = sh_eth_do_ioctl,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_mac_address = eth_mac_addr,
+ .ndo_change_mtu = eth_change_mtu,
+};
+
+static int sh_eth_drv_probe(struct platform_device *pdev)
+{
+ int ret, devno = 0;
+ struct resource *res;
+ struct net_device *ndev = NULL;
+ struct sh_eth_private *mdp = NULL;
+ struct sh_eth_plat_data *pd;
+
+ /* get base addr */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (unlikely(res == NULL)) {
+ dev_err(&pdev->dev, "invalid resource\n");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ ndev = alloc_etherdev(sizeof(struct sh_eth_private));
+ if (!ndev) {
+ dev_err(&pdev->dev, "Could not allocate device.\n");
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ /* The sh Ether-specific entries in the device structure. */
+ ndev->base_addr = res->start;
+ devno = pdev->id;
+ if (devno < 0)
+ devno = 0;
+
+ ndev->dma = -1;
+ ret = platform_get_irq(pdev, 0);
+ if (ret < 0) {
+ ret = -ENODEV;
+ goto out_release;
+ }
+ ndev->irq = ret;
+
+ SET_NETDEV_DEV(ndev, &pdev->dev);
+
+ /* Fill in the fields of the device structure with ethernet values. */
+ ether_setup(ndev);
+
+ mdp = netdev_priv(ndev);
+ spin_lock_init(&mdp->lock);
+ mdp->pdev = pdev;
+ pm_runtime_enable(&pdev->dev);
+ pm_runtime_resume(&pdev->dev);
+
+ pd = (struct sh_eth_plat_data *)(pdev->dev.platform_data);
+ /* get PHY ID */
+ mdp->phy_id = pd->phy;
+ mdp->phy_interface = pd->phy_interface;
+ /* EDMAC endian */
+ mdp->edmac_endian = pd->edmac_endian;
+ mdp->no_ether_link = pd->no_ether_link;
+ mdp->ether_link_active_low = pd->ether_link_active_low;
+ mdp->reg_offset = sh_eth_get_register_offset(pd->register_type);
+
+ /* set cpu data */
+#if defined(SH_ETH_HAS_BOTH_MODULES)
+ mdp->cd = sh_eth_get_cpu_data(mdp);
+#else
+ mdp->cd = &sh_eth_my_cpu_data;
+#endif
+ sh_eth_set_default_cpu_data(mdp->cd);
+
+ /* set function */
+ ndev->netdev_ops = &sh_eth_netdev_ops;
+ SET_ETHTOOL_OPS(ndev, &sh_eth_ethtool_ops);
+ ndev->watchdog_timeo = TX_TIMEOUT;
+
+ /* debug message level */
+ mdp->msg_enable = SH_ETH_DEF_MSG_ENABLE;
+ mdp->post_rx = POST_RX >> (devno << 1);
+ mdp->post_fw = POST_FW >> (devno << 1);
+
+ /* read and set MAC address */
+ read_mac_address(ndev, pd->mac_addr);
+
+ /* First device only init */
+ if (!devno) {
+ if (mdp->cd->tsu) {
+ struct resource *rtsu;
+ rtsu = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ if (!rtsu) {
+ dev_err(&pdev->dev, "Not found TSU resource\n");
+ goto out_release;
+ }
+ mdp->tsu_addr = ioremap(rtsu->start,
+ resource_size(rtsu));
+ }
+ if (mdp->cd->chip_reset)
+ mdp->cd->chip_reset(ndev);
+
+ if (mdp->cd->tsu) {
+ /* TSU init (Init only)*/
+ sh_eth_tsu_init(mdp);
+ }
+ }
+
+ /* network device register */
+ ret = register_netdev(ndev);
+ if (ret)
+ goto out_release;
+
+ /* mdio bus init */
+ ret = sh_mdio_init(ndev, pdev->id, pd);
+ if (ret)
+ goto out_unregister;
+
+ /* print device information */
+ pr_info("Base address at 0x%x, %pM, IRQ %d.\n",
+ (u32)ndev->base_addr, ndev->dev_addr, ndev->irq);
+
+ platform_set_drvdata(pdev, ndev);
+
+ return ret;
+
+out_unregister:
+ unregister_netdev(ndev);
+
+out_release:
+ /* net_dev free */
+ if (mdp && mdp->tsu_addr)
+ iounmap(mdp->tsu_addr);
+ if (ndev)
+ free_netdev(ndev);
+
+out:
+ return ret;
+}
+
+static int sh_eth_drv_remove(struct platform_device *pdev)
+{
+ struct net_device *ndev = platform_get_drvdata(pdev);
+ struct sh_eth_private *mdp = netdev_priv(ndev);
+
+ iounmap(mdp->tsu_addr);
+ sh_mdio_release(ndev);
+ unregister_netdev(ndev);
+ pm_runtime_disable(&pdev->dev);
+ free_netdev(ndev);
+ platform_set_drvdata(pdev, NULL);
+
+ return 0;
+}
+
+static int sh_eth_runtime_nop(struct device *dev)
+{
+ /*
+ * Runtime PM callback shared between ->runtime_suspend()
+ * and ->runtime_resume(). Simply returns success.
+ *
+ * This driver re-initializes all registers after
+ * pm_runtime_get_sync() anyway so there is no need
+ * to save and restore registers here.
+ */
+ return 0;
+}
+
+static struct dev_pm_ops sh_eth_dev_pm_ops = {
+ .runtime_suspend = sh_eth_runtime_nop,
+ .runtime_resume = sh_eth_runtime_nop,
+};
+
+static struct platform_driver sh_eth_driver = {
+ .probe = sh_eth_drv_probe,
+ .remove = sh_eth_drv_remove,
+ .driver = {
+ .name = CARDNAME,
+ .pm = &sh_eth_dev_pm_ops,
+ },
+};
+
+static int __init sh_eth_init(void)
+{
+ return platform_driver_register(&sh_eth_driver);
+}
+
+static void __exit sh_eth_cleanup(void)
+{
+ platform_driver_unregister(&sh_eth_driver);
+}
+
+module_init(sh_eth_init);
+module_exit(sh_eth_cleanup);
+
+MODULE_AUTHOR("Nobuhiro Iwamatsu, Yoshihiro Shimoda");
+MODULE_DESCRIPTION("Renesas SuperH Ethernet driver");
+MODULE_LICENSE("GPL v2");
--- /dev/null
-
- if (test_bit(0, vptr->active_vlans))
- WORD_REG_BITS_ON(MCFG_RTGOPT, ®s->MCFG);
-
+/*
+ * This code is derived from the VIA reference driver (copyright message
+ * below) provided to Red Hat by VIA Networking Technologies, Inc. for
+ * addition to the Linux kernel.
+ *
+ * The code has been merged into one source file, cleaned up to follow
+ * Linux coding style, ported to the Linux 2.6 kernel tree and cleaned
+ * for 64bit hardware platforms.
+ *
+ * TODO
+ * rx_copybreak/alignment
+ * More testing
+ *
+ * The changes are (c) Copyright 2004, Red Hat Inc. <alan@lxorguk.ukuu.org.uk>
+ * Additional fixes and clean up: Francois Romieu
+ *
+ * This source has not been verified for use in safety critical systems.
+ *
+ * Please direct queries about the revamped driver to the linux-kernel
+ * list not VIA.
+ *
+ * Original code:
+ *
+ * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
+ * All rights reserved.
+ *
+ * This software may be redistributed and/or modified under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ *
+ * Author: Chuang Liang-Shing, AJ Jiang
+ *
+ * Date: Jan 24, 2003
+ *
+ * MODULE_LICENSE("GPL");
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/bitops.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/pci.h>
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/delay.h>
+#include <linux/timer.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/string.h>
+#include <linux/wait.h>
+#include <linux/io.h>
+#include <linux/if.h>
+#include <linux/uaccess.h>
+#include <linux/proc_fs.h>
+#include <linux/inetdevice.h>
+#include <linux/reboot.h>
+#include <linux/ethtool.h>
+#include <linux/mii.h>
+#include <linux/in.h>
+#include <linux/if_arp.h>
+#include <linux/if_vlan.h>
+#include <linux/ip.h>
+#include <linux/tcp.h>
+#include <linux/udp.h>
+#include <linux/crc-ccitt.h>
+#include <linux/crc32.h>
+
+#include "via-velocity.h"
+
+
+static int velocity_nics;
+static int msglevel = MSG_LEVEL_INFO;
+
+/**
+ * mac_get_cam_mask - Read a CAM mask
+ * @regs: register block for this velocity
+ * @mask: buffer to store mask
+ *
+ * Fetch the mask bits of the selected CAM and store them into the
+ * provided mask buffer.
+ */
+static void mac_get_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
+{
+ int i;
+
+ /* Select CAM mask */
+ BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
+
+ writeb(0, ®s->CAMADDR);
+
+ /* read mask */
+ for (i = 0; i < 8; i++)
+ *mask++ = readb(&(regs->MARCAM[i]));
+
+ /* disable CAMEN */
+ writeb(0, ®s->CAMADDR);
+
+ /* Select mar */
+ BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
+}
+
+/**
+ * mac_set_cam_mask - Set a CAM mask
+ * @regs: register block for this velocity
+ * @mask: CAM mask to load
+ *
+ * Store a new mask into a CAM
+ */
+static void mac_set_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
+{
+ int i;
+ /* Select CAM mask */
+ BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
+
+ writeb(CAMADDR_CAMEN, ®s->CAMADDR);
+
+ for (i = 0; i < 8; i++)
+ writeb(*mask++, &(regs->MARCAM[i]));
+
+ /* disable CAMEN */
+ writeb(0, ®s->CAMADDR);
+
+ /* Select mar */
+ BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
+}
+
+static void mac_set_vlan_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
+{
+ int i;
+ /* Select CAM mask */
+ BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
+
+ writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL, ®s->CAMADDR);
+
+ for (i = 0; i < 8; i++)
+ writeb(*mask++, &(regs->MARCAM[i]));
+
+ /* disable CAMEN */
+ writeb(0, ®s->CAMADDR);
+
+ /* Select mar */
+ BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
+}
+
+/**
+ * mac_set_cam - set CAM data
+ * @regs: register block of this velocity
+ * @idx: Cam index
+ * @addr: 2 or 6 bytes of CAM data
+ *
+ * Load an address or vlan tag into a CAM
+ */
+static void mac_set_cam(struct mac_regs __iomem *regs, int idx, const u8 *addr)
+{
+ int i;
+
+ /* Select CAM mask */
+ BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
+
+ idx &= (64 - 1);
+
+ writeb(CAMADDR_CAMEN | idx, ®s->CAMADDR);
+
+ for (i = 0; i < 6; i++)
+ writeb(*addr++, &(regs->MARCAM[i]));
+
+ BYTE_REG_BITS_ON(CAMCR_CAMWR, ®s->CAMCR);
+
+ udelay(10);
+
+ writeb(0, ®s->CAMADDR);
+
+ /* Select mar */
+ BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
+}
+
+static void mac_set_vlan_cam(struct mac_regs __iomem *regs, int idx,
+ const u8 *addr)
+{
+
+ /* Select CAM mask */
+ BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
+
+ idx &= (64 - 1);
+
+ writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL | idx, ®s->CAMADDR);
+ writew(*((u16 *) addr), ®s->MARCAM[0]);
+
+ BYTE_REG_BITS_ON(CAMCR_CAMWR, ®s->CAMCR);
+
+ udelay(10);
+
+ writeb(0, ®s->CAMADDR);
+
+ /* Select mar */
+ BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
+}
+
+
+/**
+ * mac_wol_reset - reset WOL after exiting low power
+ * @regs: register block of this velocity
+ *
+ * Called after we drop out of wake on lan mode in order to
+ * reset the Wake on lan features. This function doesn't restore
+ * the rest of the logic from the result of sleep/wakeup
+ */
+static void mac_wol_reset(struct mac_regs __iomem *regs)
+{
+
+ /* Turn off SWPTAG right after leaving power mode */
+ BYTE_REG_BITS_OFF(STICKHW_SWPTAG, ®s->STICKHW);
+ /* clear sticky bits */
+ BYTE_REG_BITS_OFF((STICKHW_DS1 | STICKHW_DS0), ®s->STICKHW);
+
+ BYTE_REG_BITS_OFF(CHIPGCR_FCGMII, ®s->CHIPGCR);
+ BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, ®s->CHIPGCR);
+ /* disable force PME-enable */
+ writeb(WOLCFG_PMEOVR, ®s->WOLCFGClr);
+ /* disable power-event config bit */
+ writew(0xFFFF, ®s->WOLCRClr);
+ /* clear power status */
+ writew(0xFFFF, ®s->WOLSRClr);
+}
+
+static const struct ethtool_ops velocity_ethtool_ops;
+
+/*
+ Define module options
+*/
+
+MODULE_AUTHOR("VIA Networking Technologies, Inc.");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("VIA Networking Velocity Family Gigabit Ethernet Adapter Driver");
+
+#define VELOCITY_PARAM(N, D) \
+ static int N[MAX_UNITS] = OPTION_DEFAULT;\
+ module_param_array(N, int, NULL, 0); \
+ MODULE_PARM_DESC(N, D);
+
+#define RX_DESC_MIN 64
+#define RX_DESC_MAX 255
+#define RX_DESC_DEF 64
+VELOCITY_PARAM(RxDescriptors, "Number of receive descriptors");
+
+#define TX_DESC_MIN 16
+#define TX_DESC_MAX 256
+#define TX_DESC_DEF 64
+VELOCITY_PARAM(TxDescriptors, "Number of transmit descriptors");
+
+#define RX_THRESH_MIN 0
+#define RX_THRESH_MAX 3
+#define RX_THRESH_DEF 0
+/* rx_thresh[] is used for controlling the receive fifo threshold.
+ 0: indicate the rxfifo threshold is 128 bytes.
+ 1: indicate the rxfifo threshold is 512 bytes.
+ 2: indicate the rxfifo threshold is 1024 bytes.
+ 3: indicate the rxfifo threshold is store & forward.
+*/
+VELOCITY_PARAM(rx_thresh, "Receive fifo threshold");
+
+#define DMA_LENGTH_MIN 0
+#define DMA_LENGTH_MAX 7
+#define DMA_LENGTH_DEF 6
+
+/* DMA_length[] is used for controlling the DMA length
+ 0: 8 DWORDs
+ 1: 16 DWORDs
+ 2: 32 DWORDs
+ 3: 64 DWORDs
+ 4: 128 DWORDs
+ 5: 256 DWORDs
+ 6: SF(flush till emply)
+ 7: SF(flush till emply)
+*/
+VELOCITY_PARAM(DMA_length, "DMA length");
+
+#define IP_ALIG_DEF 0
+/* IP_byte_align[] is used for IP header DWORD byte aligned
+ 0: indicate the IP header won't be DWORD byte aligned.(Default) .
+ 1: indicate the IP header will be DWORD byte aligned.
+ In some environment, the IP header should be DWORD byte aligned,
+ or the packet will be droped when we receive it. (eg: IPVS)
+*/
+VELOCITY_PARAM(IP_byte_align, "Enable IP header dword aligned");
+
+#define FLOW_CNTL_DEF 1
+#define FLOW_CNTL_MIN 1
+#define FLOW_CNTL_MAX 5
+
+/* flow_control[] is used for setting the flow control ability of NIC.
+ 1: hardware deafult - AUTO (default). Use Hardware default value in ANAR.
+ 2: enable TX flow control.
+ 3: enable RX flow control.
+ 4: enable RX/TX flow control.
+ 5: disable
+*/
+VELOCITY_PARAM(flow_control, "Enable flow control ability");
+
+#define MED_LNK_DEF 0
+#define MED_LNK_MIN 0
+#define MED_LNK_MAX 5
+/* speed_duplex[] is used for setting the speed and duplex mode of NIC.
+ 0: indicate autonegotiation for both speed and duplex mode
+ 1: indicate 100Mbps half duplex mode
+ 2: indicate 100Mbps full duplex mode
+ 3: indicate 10Mbps half duplex mode
+ 4: indicate 10Mbps full duplex mode
+ 5: indicate 1000Mbps full duplex mode
+
+ Note:
+ if EEPROM have been set to the force mode, this option is ignored
+ by driver.
+*/
+VELOCITY_PARAM(speed_duplex, "Setting the speed and duplex mode");
+
+#define VAL_PKT_LEN_DEF 0
+/* ValPktLen[] is used for setting the checksum offload ability of NIC.
+ 0: Receive frame with invalid layer 2 length (Default)
+ 1: Drop frame with invalid layer 2 length
+*/
+VELOCITY_PARAM(ValPktLen, "Receiving or Drop invalid 802.3 frame");
+
+#define WOL_OPT_DEF 0
+#define WOL_OPT_MIN 0
+#define WOL_OPT_MAX 7
+/* wol_opts[] is used for controlling wake on lan behavior.
+ 0: Wake up if recevied a magic packet. (Default)
+ 1: Wake up if link status is on/off.
+ 2: Wake up if recevied an arp packet.
+ 4: Wake up if recevied any unicast packet.
+ Those value can be sumed up to support more than one option.
+*/
+VELOCITY_PARAM(wol_opts, "Wake On Lan options");
+
+static int rx_copybreak = 200;
+module_param(rx_copybreak, int, 0644);
+MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
+
+/*
+ * Internal board variants. At the moment we have only one
+ */
+static struct velocity_info_tbl chip_info_table[] = {
+ {CHIP_TYPE_VT6110, "VIA Networking Velocity Family Gigabit Ethernet Adapter", 1, 0x00FFFFFFUL},
+ { }
+};
+
+/*
+ * Describe the PCI device identifiers that we support in this
+ * device driver. Used for hotplug autoloading.
+ */
+static DEFINE_PCI_DEVICE_TABLE(velocity_id_table) = {
+ { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_612X) },
+ { }
+};
+
+MODULE_DEVICE_TABLE(pci, velocity_id_table);
+
+/**
+ * get_chip_name - identifier to name
+ * @id: chip identifier
+ *
+ * Given a chip identifier return a suitable description. Returns
+ * a pointer a static string valid while the driver is loaded.
+ */
+static const char __devinit *get_chip_name(enum chip_type chip_id)
+{
+ int i;
+ for (i = 0; chip_info_table[i].name != NULL; i++)
+ if (chip_info_table[i].chip_id == chip_id)
+ break;
+ return chip_info_table[i].name;
+}
+
+/**
+ * velocity_remove1 - device unplug
+ * @pdev: PCI device being removed
+ *
+ * Device unload callback. Called on an unplug or on module
+ * unload for each active device that is present. Disconnects
+ * the device from the network layer and frees all the resources
+ */
+static void __devexit velocity_remove1(struct pci_dev *pdev)
+{
+ struct net_device *dev = pci_get_drvdata(pdev);
+ struct velocity_info *vptr = netdev_priv(dev);
+
+ unregister_netdev(dev);
+ iounmap(vptr->mac_regs);
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+ pci_set_drvdata(pdev, NULL);
+ free_netdev(dev);
+
+ velocity_nics--;
+}
+
+/**
+ * velocity_set_int_opt - parser for integer options
+ * @opt: pointer to option value
+ * @val: value the user requested (or -1 for default)
+ * @min: lowest value allowed
+ * @max: highest value allowed
+ * @def: default value
+ * @name: property name
+ * @dev: device name
+ *
+ * Set an integer property in the module options. This function does
+ * all the verification and checking as well as reporting so that
+ * we don't duplicate code for each option.
+ */
+static void __devinit velocity_set_int_opt(int *opt, int val, int min, int max, int def, char *name, const char *devname)
+{
+ if (val == -1)
+ *opt = def;
+ else if (val < min || val > max) {
+ VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (%d-%d)\n",
+ devname, name, min, max);
+ *opt = def;
+ } else {
+ VELOCITY_PRT(MSG_LEVEL_INFO, KERN_INFO "%s: set value of parameter %s to %d\n",
+ devname, name, val);
+ *opt = val;
+ }
+}
+
+/**
+ * velocity_set_bool_opt - parser for boolean options
+ * @opt: pointer to option value
+ * @val: value the user requested (or -1 for default)
+ * @def: default value (yes/no)
+ * @flag: numeric value to set for true.
+ * @name: property name
+ * @dev: device name
+ *
+ * Set a boolean property in the module options. This function does
+ * all the verification and checking as well as reporting so that
+ * we don't duplicate code for each option.
+ */
+static void __devinit velocity_set_bool_opt(u32 *opt, int val, int def, u32 flag, char *name, const char *devname)
+{
+ (*opt) &= (~flag);
+ if (val == -1)
+ *opt |= (def ? flag : 0);
+ else if (val < 0 || val > 1) {
+ printk(KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (0-1)\n",
+ devname, name);
+ *opt |= (def ? flag : 0);
+ } else {
+ printk(KERN_INFO "%s: set parameter %s to %s\n",
+ devname, name, val ? "TRUE" : "FALSE");
+ *opt |= (val ? flag : 0);
+ }
+}
+
+/**
+ * velocity_get_options - set options on device
+ * @opts: option structure for the device
+ * @index: index of option to use in module options array
+ * @devname: device name
+ *
+ * Turn the module and command options into a single structure
+ * for the current device
+ */
+static void __devinit velocity_get_options(struct velocity_opt *opts, int index, const char *devname)
+{
+
+ velocity_set_int_opt(&opts->rx_thresh, rx_thresh[index], RX_THRESH_MIN, RX_THRESH_MAX, RX_THRESH_DEF, "rx_thresh", devname);
+ velocity_set_int_opt(&opts->DMA_length, DMA_length[index], DMA_LENGTH_MIN, DMA_LENGTH_MAX, DMA_LENGTH_DEF, "DMA_length", devname);
+ velocity_set_int_opt(&opts->numrx, RxDescriptors[index], RX_DESC_MIN, RX_DESC_MAX, RX_DESC_DEF, "RxDescriptors", devname);
+ velocity_set_int_opt(&opts->numtx, TxDescriptors[index], TX_DESC_MIN, TX_DESC_MAX, TX_DESC_DEF, "TxDescriptors", devname);
+
+ velocity_set_int_opt(&opts->flow_cntl, flow_control[index], FLOW_CNTL_MIN, FLOW_CNTL_MAX, FLOW_CNTL_DEF, "flow_control", devname);
+ velocity_set_bool_opt(&opts->flags, IP_byte_align[index], IP_ALIG_DEF, VELOCITY_FLAGS_IP_ALIGN, "IP_byte_align", devname);
+ velocity_set_bool_opt(&opts->flags, ValPktLen[index], VAL_PKT_LEN_DEF, VELOCITY_FLAGS_VAL_PKT_LEN, "ValPktLen", devname);
+ velocity_set_int_opt((int *) &opts->spd_dpx, speed_duplex[index], MED_LNK_MIN, MED_LNK_MAX, MED_LNK_DEF, "Media link mode", devname);
+ velocity_set_int_opt((int *) &opts->wol_opts, wol_opts[index], WOL_OPT_MIN, WOL_OPT_MAX, WOL_OPT_DEF, "Wake On Lan options", devname);
+ opts->numrx = (opts->numrx & ~3);
+}
+
+/**
+ * velocity_init_cam_filter - initialise CAM
+ * @vptr: velocity to program
+ *
+ * Initialize the content addressable memory used for filters. Load
+ * appropriately according to the presence of VLAN
+ */
+static void velocity_init_cam_filter(struct velocity_info *vptr)
+{
+ struct mac_regs __iomem *regs = vptr->mac_regs;
+ unsigned int vid, i = 0;
+
+ /* Turn on MCFG_PQEN, turn off MCFG_RTGOPT */
+ WORD_REG_BITS_SET(MCFG_PQEN, MCFG_RTGOPT, ®s->MCFG);
+ WORD_REG_BITS_ON(MCFG_VIDFR, ®s->MCFG);
+
+ /* Disable all CAMs */
+ memset(vptr->vCAMmask, 0, sizeof(u8) * 8);
+ memset(vptr->mCAMmask, 0, sizeof(u8) * 8);
+ mac_set_vlan_cam_mask(regs, vptr->vCAMmask);
+ mac_set_cam_mask(regs, vptr->mCAMmask);
+
+ /* Enable VCAMs */
+ for_each_set_bit(vid, vptr->active_vlans, VLAN_N_VID) {
+ mac_set_vlan_cam(regs, i, (u8 *) &vid);
+ vptr->vCAMmask[i / 8] |= 0x1 << (i % 8);
+ if (++i >= VCAM_SIZE)
+ break;
+ }
+ mac_set_vlan_cam_mask(regs, vptr->vCAMmask);
+}
+
+static void velocity_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
+{
+ struct velocity_info *vptr = netdev_priv(dev);
+
+ spin_lock_irq(&vptr->lock);
+ set_bit(vid, vptr->active_vlans);
+ velocity_init_cam_filter(vptr);
+ spin_unlock_irq(&vptr->lock);
+}
+
+static void velocity_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
+{
+ struct velocity_info *vptr = netdev_priv(dev);
+
+ spin_lock_irq(&vptr->lock);
+ clear_bit(vid, vptr->active_vlans);
+ velocity_init_cam_filter(vptr);
+ spin_unlock_irq(&vptr->lock);
+}
+
+static void velocity_init_rx_ring_indexes(struct velocity_info *vptr)
+{
+ vptr->rx.dirty = vptr->rx.filled = vptr->rx.curr = 0;
+}
+
+/**
+ * velocity_rx_reset - handle a receive reset
+ * @vptr: velocity we are resetting
+ *
+ * Reset the ownership and status for the receive ring side.
+ * Hand all the receive queue to the NIC.
+ */
+static void velocity_rx_reset(struct velocity_info *vptr)
+{
+
+ struct mac_regs __iomem *regs = vptr->mac_regs;
+ int i;
+
+ velocity_init_rx_ring_indexes(vptr);
+
+ /*
+ * Init state, all RD entries belong to the NIC
+ */
+ for (i = 0; i < vptr->options.numrx; ++i)
+ vptr->rx.ring[i].rdesc0.len |= OWNED_BY_NIC;
+
+ writew(vptr->options.numrx, ®s->RBRDU);
+ writel(vptr->rx.pool_dma, ®s->RDBaseLo);
+ writew(0, ®s->RDIdx);
+ writew(vptr->options.numrx - 1, ®s->RDCSize);
+}
+
+/**
+ * velocity_get_opt_media_mode - get media selection
+ * @vptr: velocity adapter
+ *
+ * Get the media mode stored in EEPROM or module options and load
+ * mii_status accordingly. The requested link state information
+ * is also returned.
+ */
+static u32 velocity_get_opt_media_mode(struct velocity_info *vptr)
+{
+ u32 status = 0;
+
+ switch (vptr->options.spd_dpx) {
+ case SPD_DPX_AUTO:
+ status = VELOCITY_AUTONEG_ENABLE;
+ break;
+ case SPD_DPX_100_FULL:
+ status = VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL;
+ break;
+ case SPD_DPX_10_FULL:
+ status = VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL;
+ break;
+ case SPD_DPX_100_HALF:
+ status = VELOCITY_SPEED_100;
+ break;
+ case SPD_DPX_10_HALF:
+ status = VELOCITY_SPEED_10;
+ break;
+ case SPD_DPX_1000_FULL:
+ status = VELOCITY_SPEED_1000 | VELOCITY_DUPLEX_FULL;
+ break;
+ }
+ vptr->mii_status = status;
+ return status;
+}
+
+/**
+ * safe_disable_mii_autopoll - autopoll off
+ * @regs: velocity registers
+ *
+ * Turn off the autopoll and wait for it to disable on the chip
+ */
+static void safe_disable_mii_autopoll(struct mac_regs __iomem *regs)
+{
+ u16 ww;
+
+ /* turn off MAUTO */
+ writeb(0, ®s->MIICR);
+ for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
+ udelay(1);
+ if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
+ break;
+ }
+}
+
+/**
+ * enable_mii_autopoll - turn on autopolling
+ * @regs: velocity registers
+ *
+ * Enable the MII link status autopoll feature on the Velocity
+ * hardware. Wait for it to enable.
+ */
+static void enable_mii_autopoll(struct mac_regs __iomem *regs)
+{
+ int ii;
+
+ writeb(0, &(regs->MIICR));
+ writeb(MIIADR_SWMPL, ®s->MIIADR);
+
+ for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
+ udelay(1);
+ if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
+ break;
+ }
+
+ writeb(MIICR_MAUTO, ®s->MIICR);
+
+ for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
+ udelay(1);
+ if (!BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
+ break;
+ }
+
+}
+
+/**
+ * velocity_mii_read - read MII data
+ * @regs: velocity registers
+ * @index: MII register index
+ * @data: buffer for received data
+ *
+ * Perform a single read of an MII 16bit register. Returns zero
+ * on success or -ETIMEDOUT if the PHY did not respond.
+ */
+static int velocity_mii_read(struct mac_regs __iomem *regs, u8 index, u16 *data)
+{
+ u16 ww;
+
+ /*
+ * Disable MIICR_MAUTO, so that mii addr can be set normally
+ */
+ safe_disable_mii_autopoll(regs);
+
+ writeb(index, ®s->MIIADR);
+
+ BYTE_REG_BITS_ON(MIICR_RCMD, ®s->MIICR);
+
+ for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
+ if (!(readb(®s->MIICR) & MIICR_RCMD))
+ break;
+ }
+
+ *data = readw(®s->MIIDATA);
+
+ enable_mii_autopoll(regs);
+ if (ww == W_MAX_TIMEOUT)
+ return -ETIMEDOUT;
+ return 0;
+}
+
+/**
+ * mii_check_media_mode - check media state
+ * @regs: velocity registers
+ *
+ * Check the current MII status and determine the link status
+ * accordingly
+ */
+static u32 mii_check_media_mode(struct mac_regs __iomem *regs)
+{
+ u32 status = 0;
+ u16 ANAR;
+
+ if (!MII_REG_BITS_IS_ON(BMSR_LSTATUS, MII_BMSR, regs))
+ status |= VELOCITY_LINK_FAIL;
+
+ if (MII_REG_BITS_IS_ON(ADVERTISE_1000FULL, MII_CTRL1000, regs))
+ status |= VELOCITY_SPEED_1000 | VELOCITY_DUPLEX_FULL;
+ else if (MII_REG_BITS_IS_ON(ADVERTISE_1000HALF, MII_CTRL1000, regs))
+ status |= (VELOCITY_SPEED_1000);
+ else {
+ velocity_mii_read(regs, MII_ADVERTISE, &ANAR);
+ if (ANAR & ADVERTISE_100FULL)
+ status |= (VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL);
+ else if (ANAR & ADVERTISE_100HALF)
+ status |= VELOCITY_SPEED_100;
+ else if (ANAR & ADVERTISE_10FULL)
+ status |= (VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL);
+ else
+ status |= (VELOCITY_SPEED_10);
+ }
+
+ if (MII_REG_BITS_IS_ON(BMCR_ANENABLE, MII_BMCR, regs)) {
+ velocity_mii_read(regs, MII_ADVERTISE, &ANAR);
+ if ((ANAR & (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF))
+ == (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF)) {
+ if (MII_REG_BITS_IS_ON(ADVERTISE_1000HALF | ADVERTISE_1000FULL, MII_CTRL1000, regs))
+ status |= VELOCITY_AUTONEG_ENABLE;
+ }
+ }
+
+ return status;
+}
+
+/**
+ * velocity_mii_write - write MII data
+ * @regs: velocity registers
+ * @index: MII register index
+ * @data: 16bit data for the MII register
+ *
+ * Perform a single write to an MII 16bit register. Returns zero
+ * on success or -ETIMEDOUT if the PHY did not respond.
+ */
+static int velocity_mii_write(struct mac_regs __iomem *regs, u8 mii_addr, u16 data)
+{
+ u16 ww;
+
+ /*
+ * Disable MIICR_MAUTO, so that mii addr can be set normally
+ */
+ safe_disable_mii_autopoll(regs);
+
+ /* MII reg offset */
+ writeb(mii_addr, ®s->MIIADR);
+ /* set MII data */
+ writew(data, ®s->MIIDATA);
+
+ /* turn on MIICR_WCMD */
+ BYTE_REG_BITS_ON(MIICR_WCMD, ®s->MIICR);
+
+ /* W_MAX_TIMEOUT is the timeout period */
+ for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
+ udelay(5);
+ if (!(readb(®s->MIICR) & MIICR_WCMD))
+ break;
+ }
+ enable_mii_autopoll(regs);
+
+ if (ww == W_MAX_TIMEOUT)
+ return -ETIMEDOUT;
+ return 0;
+}
+
+/**
+ * set_mii_flow_control - flow control setup
+ * @vptr: velocity interface
+ *
+ * Set up the flow control on this interface according to
+ * the supplied user/eeprom options.
+ */
+static void set_mii_flow_control(struct velocity_info *vptr)
+{
+ /*Enable or Disable PAUSE in ANAR */
+ switch (vptr->options.flow_cntl) {
+ case FLOW_CNTL_TX:
+ MII_REG_BITS_OFF(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs);
+ MII_REG_BITS_ON(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs);
+ break;
+
+ case FLOW_CNTL_RX:
+ MII_REG_BITS_ON(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs);
+ MII_REG_BITS_ON(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs);
+ break;
+
+ case FLOW_CNTL_TX_RX:
+ MII_REG_BITS_ON(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs);
+ MII_REG_BITS_OFF(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs);
+ break;
+
+ case FLOW_CNTL_DISABLE:
+ MII_REG_BITS_OFF(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs);
+ MII_REG_BITS_OFF(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs);
+ break;
+ default:
+ break;
+ }
+}
+
+/**
+ * mii_set_auto_on - autonegotiate on
+ * @vptr: velocity
+ *
+ * Enable autonegotation on this interface
+ */
+static void mii_set_auto_on(struct velocity_info *vptr)
+{
+ if (MII_REG_BITS_IS_ON(BMCR_ANENABLE, MII_BMCR, vptr->mac_regs))
+ MII_REG_BITS_ON(BMCR_ANRESTART, MII_BMCR, vptr->mac_regs);
+ else
+ MII_REG_BITS_ON(BMCR_ANENABLE, MII_BMCR, vptr->mac_regs);
+}
+
+static u32 check_connection_type(struct mac_regs __iomem *regs)
+{
+ u32 status = 0;
+ u8 PHYSR0;
+ u16 ANAR;
+ PHYSR0 = readb(®s->PHYSR0);
+
+ /*
+ if (!(PHYSR0 & PHYSR0_LINKGD))
+ status|=VELOCITY_LINK_FAIL;
+ */
+
+ if (PHYSR0 & PHYSR0_FDPX)
+ status |= VELOCITY_DUPLEX_FULL;
+
+ if (PHYSR0 & PHYSR0_SPDG)
+ status |= VELOCITY_SPEED_1000;
+ else if (PHYSR0 & PHYSR0_SPD10)
+ status |= VELOCITY_SPEED_10;
+ else
+ status |= VELOCITY_SPEED_100;
+
+ if (MII_REG_BITS_IS_ON(BMCR_ANENABLE, MII_BMCR, regs)) {
+ velocity_mii_read(regs, MII_ADVERTISE, &ANAR);
+ if ((ANAR & (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF))
+ == (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF)) {
+ if (MII_REG_BITS_IS_ON(ADVERTISE_1000HALF | ADVERTISE_1000FULL, MII_CTRL1000, regs))
+ status |= VELOCITY_AUTONEG_ENABLE;
+ }
+ }
+
+ return status;
+}
+
+/**
+ * velocity_set_media_mode - set media mode
+ * @mii_status: old MII link state
+ *
+ * Check the media link state and configure the flow control
+ * PHY and also velocity hardware setup accordingly. In particular
+ * we need to set up CD polling and frame bursting.
+ */
+static int velocity_set_media_mode(struct velocity_info *vptr, u32 mii_status)
+{
+ u32 curr_status;
+ struct mac_regs __iomem *regs = vptr->mac_regs;
+
+ vptr->mii_status = mii_check_media_mode(vptr->mac_regs);
+ curr_status = vptr->mii_status & (~VELOCITY_LINK_FAIL);
+
+ /* Set mii link status */
+ set_mii_flow_control(vptr);
+
+ /*
+ Check if new status is consistent with current status
+ if (((mii_status & curr_status) & VELOCITY_AUTONEG_ENABLE) ||
+ (mii_status==curr_status)) {
+ vptr->mii_status=mii_check_media_mode(vptr->mac_regs);
+ vptr->mii_status=check_connection_type(vptr->mac_regs);
+ VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity link no change\n");
+ return 0;
+ }
+ */
+
+ if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
+ MII_REG_BITS_ON(AUXCR_MDPPS, MII_NCONFIG, vptr->mac_regs);
+
+ /*
+ * If connection type is AUTO
+ */
+ if (mii_status & VELOCITY_AUTONEG_ENABLE) {
+ VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity is AUTO mode\n");
+ /* clear force MAC mode bit */
+ BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, ®s->CHIPGCR);
+ /* set duplex mode of MAC according to duplex mode of MII */
+ MII_REG_BITS_ON(ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF, MII_ADVERTISE, vptr->mac_regs);
+ MII_REG_BITS_ON(ADVERTISE_1000FULL | ADVERTISE_1000HALF, MII_CTRL1000, vptr->mac_regs);
+ MII_REG_BITS_ON(BMCR_SPEED1000, MII_BMCR, vptr->mac_regs);
+
+ /* enable AUTO-NEGO mode */
+ mii_set_auto_on(vptr);
+ } else {
+ u16 CTRL1000;
+ u16 ANAR;
+ u8 CHIPGCR;
+
+ /*
+ * 1. if it's 3119, disable frame bursting in halfduplex mode
+ * and enable it in fullduplex mode
+ * 2. set correct MII/GMII and half/full duplex mode in CHIPGCR
+ * 3. only enable CD heart beat counter in 10HD mode
+ */
+
+ /* set force MAC mode bit */
+ BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR);
+
+ CHIPGCR = readb(®s->CHIPGCR);
+
+ if (mii_status & VELOCITY_SPEED_1000)
+ CHIPGCR |= CHIPGCR_FCGMII;
+ else
+ CHIPGCR &= ~CHIPGCR_FCGMII;
+
+ if (mii_status & VELOCITY_DUPLEX_FULL) {
+ CHIPGCR |= CHIPGCR_FCFDX;
+ writeb(CHIPGCR, ®s->CHIPGCR);
+ VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced full mode\n");
+ if (vptr->rev_id < REV_ID_VT3216_A0)
+ BYTE_REG_BITS_OFF(TCR_TB2BDIS, ®s->TCR);
+ } else {
+ CHIPGCR &= ~CHIPGCR_FCFDX;
+ VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced half mode\n");
+ writeb(CHIPGCR, ®s->CHIPGCR);
+ if (vptr->rev_id < REV_ID_VT3216_A0)
+ BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR);
+ }
+
+ velocity_mii_read(vptr->mac_regs, MII_CTRL1000, &CTRL1000);
+ CTRL1000 &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
+ if ((mii_status & VELOCITY_SPEED_1000) &&
+ (mii_status & VELOCITY_DUPLEX_FULL)) {
+ CTRL1000 |= ADVERTISE_1000FULL;
+ }
+ velocity_mii_write(vptr->mac_regs, MII_CTRL1000, CTRL1000);
+
+ if (!(mii_status & VELOCITY_DUPLEX_FULL) && (mii_status & VELOCITY_SPEED_10))
+ BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG);
+ else
+ BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG);
+
+ /* MII_REG_BITS_OFF(BMCR_SPEED1000, MII_BMCR, vptr->mac_regs); */
+ velocity_mii_read(vptr->mac_regs, MII_ADVERTISE, &ANAR);
+ ANAR &= (~(ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF));
+ if (mii_status & VELOCITY_SPEED_100) {
+ if (mii_status & VELOCITY_DUPLEX_FULL)
+ ANAR |= ADVERTISE_100FULL;
+ else
+ ANAR |= ADVERTISE_100HALF;
+ } else if (mii_status & VELOCITY_SPEED_10) {
+ if (mii_status & VELOCITY_DUPLEX_FULL)
+ ANAR |= ADVERTISE_10FULL;
+ else
+ ANAR |= ADVERTISE_10HALF;
+ }
+ velocity_mii_write(vptr->mac_regs, MII_ADVERTISE, ANAR);
+ /* enable AUTO-NEGO mode */
+ mii_set_auto_on(vptr);
+ /* MII_REG_BITS_ON(BMCR_ANENABLE, MII_BMCR, vptr->mac_regs); */
+ }
+ /* vptr->mii_status=mii_check_media_mode(vptr->mac_regs); */
+ /* vptr->mii_status=check_connection_type(vptr->mac_regs); */
+ return VELOCITY_LINK_CHANGE;
+}
+
+/**
+ * velocity_print_link_status - link status reporting
+ * @vptr: velocity to report on
+ *
+ * Turn the link status of the velocity card into a kernel log
+ * description of the new link state, detailing speed and duplex
+ * status
+ */
+static void velocity_print_link_status(struct velocity_info *vptr)
+{
+
+ if (vptr->mii_status & VELOCITY_LINK_FAIL) {
+ VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: failed to detect cable link\n", vptr->dev->name);
+ } else if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
+ VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link auto-negotiation", vptr->dev->name);
+
+ if (vptr->mii_status & VELOCITY_SPEED_1000)
+ VELOCITY_PRT(MSG_LEVEL_INFO, " speed 1000M bps");
+ else if (vptr->mii_status & VELOCITY_SPEED_100)
+ VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps");
+ else
+ VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps");
+
+ if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
+ VELOCITY_PRT(MSG_LEVEL_INFO, " full duplex\n");
+ else
+ VELOCITY_PRT(MSG_LEVEL_INFO, " half duplex\n");
+ } else {
+ VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link forced", vptr->dev->name);
+ switch (vptr->options.spd_dpx) {
+ case SPD_DPX_1000_FULL:
+ VELOCITY_PRT(MSG_LEVEL_INFO, " speed 1000M bps full duplex\n");
+ break;
+ case SPD_DPX_100_HALF:
+ VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps half duplex\n");
+ break;
+ case SPD_DPX_100_FULL:
+ VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps full duplex\n");
+ break;
+ case SPD_DPX_10_HALF:
+ VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps half duplex\n");
+ break;
+ case SPD_DPX_10_FULL:
+ VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps full duplex\n");
+ break;
+ default:
+ break;
+ }
+ }
+}
+
+/**
+ * enable_flow_control_ability - flow control
+ * @vptr: veloity to configure
+ *
+ * Set up flow control according to the flow control options
+ * determined by the eeprom/configuration.
+ */
+static void enable_flow_control_ability(struct velocity_info *vptr)
+{
+
+ struct mac_regs __iomem *regs = vptr->mac_regs;
+
+ switch (vptr->options.flow_cntl) {
+
+ case FLOW_CNTL_DEFAULT:
+ if (BYTE_REG_BITS_IS_ON(PHYSR0_RXFLC, ®s->PHYSR0))
+ writel(CR0_FDXRFCEN, ®s->CR0Set);
+ else
+ writel(CR0_FDXRFCEN, ®s->CR0Clr);
+
+ if (BYTE_REG_BITS_IS_ON(PHYSR0_TXFLC, ®s->PHYSR0))
+ writel(CR0_FDXTFCEN, ®s->CR0Set);
+ else
+ writel(CR0_FDXTFCEN, ®s->CR0Clr);
+ break;
+
+ case FLOW_CNTL_TX:
+ writel(CR0_FDXTFCEN, ®s->CR0Set);
+ writel(CR0_FDXRFCEN, ®s->CR0Clr);
+ break;
+
+ case FLOW_CNTL_RX:
+ writel(CR0_FDXRFCEN, ®s->CR0Set);
+ writel(CR0_FDXTFCEN, ®s->CR0Clr);
+ break;
+
+ case FLOW_CNTL_TX_RX:
+ writel(CR0_FDXTFCEN, ®s->CR0Set);
+ writel(CR0_FDXRFCEN, ®s->CR0Set);
+ break;
+
+ case FLOW_CNTL_DISABLE:
+ writel(CR0_FDXRFCEN, ®s->CR0Clr);
+ writel(CR0_FDXTFCEN, ®s->CR0Clr);
+ break;
+
+ default:
+ break;
+ }
+
+}
+
+/**
+ * velocity_soft_reset - soft reset
+ * @vptr: velocity to reset
+ *
+ * Kick off a soft reset of the velocity adapter and then poll
+ * until the reset sequence has completed before returning.
+ */
+static int velocity_soft_reset(struct velocity_info *vptr)
+{
+ struct mac_regs __iomem *regs = vptr->mac_regs;
+ int i = 0;
+
+ writel(CR0_SFRST, ®s->CR0Set);
+
+ for (i = 0; i < W_MAX_TIMEOUT; i++) {
+ udelay(5);
+ if (!DWORD_REG_BITS_IS_ON(CR0_SFRST, ®s->CR0Set))
+ break;
+ }
+
+ if (i == W_MAX_TIMEOUT) {
+ writel(CR0_FORSRST, ®s->CR0Set);
+ /* FIXME: PCI POSTING */
+ /* delay 2ms */
+ mdelay(2);
+ }
+ return 0;
+}
+
+/**
+ * velocity_set_multi - filter list change callback
+ * @dev: network device
+ *
+ * Called by the network layer when the filter lists need to change
+ * for a velocity adapter. Reload the CAMs with the new address
+ * filter ruleset.
+ */
+static void velocity_set_multi(struct net_device *dev)
+{
+ struct velocity_info *vptr = netdev_priv(dev);
+ struct mac_regs __iomem *regs = vptr->mac_regs;
+ u8 rx_mode;
+ int i;
+ struct netdev_hw_addr *ha;
+
+ if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
+ writel(0xffffffff, ®s->MARCAM[0]);
+ writel(0xffffffff, ®s->MARCAM[4]);
+ rx_mode = (RCR_AM | RCR_AB | RCR_PROM);
+ } else if ((netdev_mc_count(dev) > vptr->multicast_limit) ||
+ (dev->flags & IFF_ALLMULTI)) {
+ writel(0xffffffff, ®s->MARCAM[0]);
+ writel(0xffffffff, ®s->MARCAM[4]);
+ rx_mode = (RCR_AM | RCR_AB);
+ } else {
+ int offset = MCAM_SIZE - vptr->multicast_limit;
+ mac_get_cam_mask(regs, vptr->mCAMmask);
+
+ i = 0;
+ netdev_for_each_mc_addr(ha, dev) {
+ mac_set_cam(regs, i + offset, ha->addr);
+ vptr->mCAMmask[(offset + i) / 8] |= 1 << ((offset + i) & 7);
+ i++;
+ }
+
+ mac_set_cam_mask(regs, vptr->mCAMmask);
+ rx_mode = RCR_AM | RCR_AB | RCR_AP;
+ }
+ if (dev->mtu > 1500)
+ rx_mode |= RCR_AL;
+
+ BYTE_REG_BITS_ON(rx_mode, ®s->RCR);
+
+}
+
+/*
+ * MII access , media link mode setting functions
+ */
+
+/**
+ * mii_init - set up MII
+ * @vptr: velocity adapter
+ * @mii_status: links tatus
+ *
+ * Set up the PHY for the current link state.
+ */
+static void mii_init(struct velocity_info *vptr, u32 mii_status)
+{
+ u16 BMCR;
+
+ switch (PHYID_GET_PHY_ID(vptr->phy_id)) {
+ case PHYID_CICADA_CS8201:
+ /*
+ * Reset to hardware default
+ */
+ MII_REG_BITS_OFF((ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP), MII_ADVERTISE, vptr->mac_regs);
+ /*
+ * Turn on ECHODIS bit in NWay-forced full mode and turn it
+ * off it in NWay-forced half mode for NWay-forced v.s.
+ * legacy-forced issue.
+ */
+ if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
+ MII_REG_BITS_ON(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs);
+ else
+ MII_REG_BITS_OFF(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs);
+ /*
+ * Turn on Link/Activity LED enable bit for CIS8201
+ */
+ MII_REG_BITS_ON(PLED_LALBE, MII_TPISTATUS, vptr->mac_regs);
+ break;
+ case PHYID_VT3216_32BIT:
+ case PHYID_VT3216_64BIT:
+ /*
+ * Reset to hardware default
+ */
+ MII_REG_BITS_ON((ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP), MII_ADVERTISE, vptr->mac_regs);
+ /*
+ * Turn on ECHODIS bit in NWay-forced full mode and turn it
+ * off it in NWay-forced half mode for NWay-forced v.s.
+ * legacy-forced issue
+ */
+ if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
+ MII_REG_BITS_ON(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs);
+ else
+ MII_REG_BITS_OFF(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs);
+ break;
+
+ case PHYID_MARVELL_1000:
+ case PHYID_MARVELL_1000S:
+ /*
+ * Assert CRS on Transmit
+ */
+ MII_REG_BITS_ON(PSCR_ACRSTX, MII_REG_PSCR, vptr->mac_regs);
+ /*
+ * Reset to hardware default
+ */
+ MII_REG_BITS_ON((ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP), MII_ADVERTISE, vptr->mac_regs);
+ break;
+ default:
+ ;
+ }
+ velocity_mii_read(vptr->mac_regs, MII_BMCR, &BMCR);
+ if (BMCR & BMCR_ISOLATE) {
+ BMCR &= ~BMCR_ISOLATE;
+ velocity_mii_write(vptr->mac_regs, MII_BMCR, BMCR);
+ }
+}
+
+/**
+ * setup_queue_timers - Setup interrupt timers
+ *
+ * Setup interrupt frequency during suppression (timeout if the frame
+ * count isn't filled).
+ */
+static void setup_queue_timers(struct velocity_info *vptr)
+{
+ /* Only for newer revisions */
+ if (vptr->rev_id >= REV_ID_VT3216_A0) {
+ u8 txqueue_timer = 0;
+ u8 rxqueue_timer = 0;
+
+ if (vptr->mii_status & (VELOCITY_SPEED_1000 |
+ VELOCITY_SPEED_100)) {
+ txqueue_timer = vptr->options.txqueue_timer;
+ rxqueue_timer = vptr->options.rxqueue_timer;
+ }
+
+ writeb(txqueue_timer, &vptr->mac_regs->TQETMR);
+ writeb(rxqueue_timer, &vptr->mac_regs->RQETMR);
+ }
+}
+
+/**
+ * setup_adaptive_interrupts - Setup interrupt suppression
+ *
+ * @vptr velocity adapter
+ *
+ * The velocity is able to suppress interrupt during high interrupt load.
+ * This function turns on that feature.
+ */
+static void setup_adaptive_interrupts(struct velocity_info *vptr)
+{
+ struct mac_regs __iomem *regs = vptr->mac_regs;
+ u16 tx_intsup = vptr->options.tx_intsup;
+ u16 rx_intsup = vptr->options.rx_intsup;
+
+ /* Setup default interrupt mask (will be changed below) */
+ vptr->int_mask = INT_MASK_DEF;
+
+ /* Set Tx Interrupt Suppression Threshold */
+ writeb(CAMCR_PS0, ®s->CAMCR);
+ if (tx_intsup != 0) {
+ vptr->int_mask &= ~(ISR_PTXI | ISR_PTX0I | ISR_PTX1I |
+ ISR_PTX2I | ISR_PTX3I);
+ writew(tx_intsup, ®s->ISRCTL);
+ } else
+ writew(ISRCTL_TSUPDIS, ®s->ISRCTL);
+
+ /* Set Rx Interrupt Suppression Threshold */
+ writeb(CAMCR_PS1, ®s->CAMCR);
+ if (rx_intsup != 0) {
+ vptr->int_mask &= ~ISR_PRXI;
+ writew(rx_intsup, ®s->ISRCTL);
+ } else
+ writew(ISRCTL_RSUPDIS, ®s->ISRCTL);
+
+ /* Select page to interrupt hold timer */
+ writeb(0, ®s->CAMCR);
+}
+
+/**
+ * velocity_init_registers - initialise MAC registers
+ * @vptr: velocity to init
+ * @type: type of initialisation (hot or cold)
+ *
+ * Initialise the MAC on a reset or on first set up on the
+ * hardware.
+ */
+static void velocity_init_registers(struct velocity_info *vptr,
+ enum velocity_init_type type)
+{
+ struct mac_regs __iomem *regs = vptr->mac_regs;
+ int i, mii_status;
+
+ mac_wol_reset(regs);
+
+ switch (type) {
+ case VELOCITY_INIT_RESET:
+ case VELOCITY_INIT_WOL:
+
+ netif_stop_queue(vptr->dev);
+
+ /*
+ * Reset RX to prevent RX pointer not on the 4X location
+ */
+ velocity_rx_reset(vptr);
+ mac_rx_queue_run(regs);
+ mac_rx_queue_wake(regs);
+
+ mii_status = velocity_get_opt_media_mode(vptr);
+ if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
+ velocity_print_link_status(vptr);
+ if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
+ netif_wake_queue(vptr->dev);
+ }
+
+ enable_flow_control_ability(vptr);
+
+ mac_clear_isr(regs);
+ writel(CR0_STOP, ®s->CR0Clr);
+ writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT),
+ ®s->CR0Set);
+
+ break;
+
+ case VELOCITY_INIT_COLD:
+ default:
+ /*
+ * Do reset
+ */
+ velocity_soft_reset(vptr);
+ mdelay(5);
+
+ mac_eeprom_reload(regs);
+ for (i = 0; i < 6; i++)
+ writeb(vptr->dev->dev_addr[i], &(regs->PAR[i]));
+
+ /*
+ * clear Pre_ACPI bit.
+ */
+ BYTE_REG_BITS_OFF(CFGA_PACPI, &(regs->CFGA));
+ mac_set_rx_thresh(regs, vptr->options.rx_thresh);
+ mac_set_dma_length(regs, vptr->options.DMA_length);
+
+ writeb(WOLCFG_SAM | WOLCFG_SAB, ®s->WOLCFGSet);
+ /*
+ * Back off algorithm use original IEEE standard
+ */
+ BYTE_REG_BITS_SET(CFGB_OFSET, (CFGB_CRANDOM | CFGB_CAP | CFGB_MBA | CFGB_BAKOPT), ®s->CFGB);
+
+ /*
+ * Init CAM filter
+ */
+ velocity_init_cam_filter(vptr);
+
+ /*
+ * Set packet filter: Receive directed and broadcast address
+ */
+ velocity_set_multi(vptr->dev);
+
+ /*
+ * Enable MII auto-polling
+ */
+ enable_mii_autopoll(regs);
+
+ setup_adaptive_interrupts(vptr);
+
+ writel(vptr->rx.pool_dma, ®s->RDBaseLo);
+ writew(vptr->options.numrx - 1, ®s->RDCSize);
+ mac_rx_queue_run(regs);
+ mac_rx_queue_wake(regs);
+
+ writew(vptr->options.numtx - 1, ®s->TDCSize);
+
+ for (i = 0; i < vptr->tx.numq; i++) {
+ writel(vptr->tx.pool_dma[i], ®s->TDBaseLo[i]);
+ mac_tx_queue_run(regs, i);
+ }
+
+ init_flow_control_register(vptr);
+
+ writel(CR0_STOP, ®s->CR0Clr);
+ writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT), ®s->CR0Set);
+
+ mii_status = velocity_get_opt_media_mode(vptr);
+ netif_stop_queue(vptr->dev);
+
+ mii_init(vptr, mii_status);
+
+ if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
+ velocity_print_link_status(vptr);
+ if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
+ netif_wake_queue(vptr->dev);
+ }
+
+ enable_flow_control_ability(vptr);
+ mac_hw_mibs_init(regs);
+ mac_write_int_mask(vptr->int_mask, regs);
+ mac_clear_isr(regs);
+
+ }
+}
+
+static void velocity_give_many_rx_descs(struct velocity_info *vptr)
+{
+ struct mac_regs __iomem *regs = vptr->mac_regs;
+ int avail, dirty, unusable;
+
+ /*
+ * RD number must be equal to 4X per hardware spec
+ * (programming guide rev 1.20, p.13)
+ */
+ if (vptr->rx.filled < 4)
+ return;
+
+ wmb();
+
+ unusable = vptr->rx.filled & 0x0003;
+ dirty = vptr->rx.dirty - unusable;
+ for (avail = vptr->rx.filled & 0xfffc; avail; avail--) {
+ dirty = (dirty > 0) ? dirty - 1 : vptr->options.numrx - 1;
+ vptr->rx.ring[dirty].rdesc0.len |= OWNED_BY_NIC;
+ }
+
+ writew(vptr->rx.filled & 0xfffc, ®s->RBRDU);
+ vptr->rx.filled = unusable;
+}
+
+/**
+ * velocity_init_dma_rings - set up DMA rings
+ * @vptr: Velocity to set up
+ *
+ * Allocate PCI mapped DMA rings for the receive and transmit layer
+ * to use.
+ */
+static int velocity_init_dma_rings(struct velocity_info *vptr)
+{
+ struct velocity_opt *opt = &vptr->options;
+ const unsigned int rx_ring_size = opt->numrx * sizeof(struct rx_desc);
+ const unsigned int tx_ring_size = opt->numtx * sizeof(struct tx_desc);
+ struct pci_dev *pdev = vptr->pdev;
+ dma_addr_t pool_dma;
+ void *pool;
+ unsigned int i;
+
+ /*
+ * Allocate all RD/TD rings a single pool.
+ *
+ * pci_alloc_consistent() fulfills the requirement for 64 bytes
+ * alignment
+ */
+ pool = pci_alloc_consistent(pdev, tx_ring_size * vptr->tx.numq +
+ rx_ring_size, &pool_dma);
+ if (!pool) {
+ dev_err(&pdev->dev, "%s : DMA memory allocation failed.\n",
+ vptr->dev->name);
+ return -ENOMEM;
+ }
+
+ vptr->rx.ring = pool;
+ vptr->rx.pool_dma = pool_dma;
+
+ pool += rx_ring_size;
+ pool_dma += rx_ring_size;
+
+ for (i = 0; i < vptr->tx.numq; i++) {
+ vptr->tx.rings[i] = pool;
+ vptr->tx.pool_dma[i] = pool_dma;
+ pool += tx_ring_size;
+ pool_dma += tx_ring_size;
+ }
+
+ return 0;
+}
+
+static void velocity_set_rxbufsize(struct velocity_info *vptr, int mtu)
+{
+ vptr->rx.buf_sz = (mtu <= ETH_DATA_LEN) ? PKT_BUF_SZ : mtu + 32;
+}
+
+/**
+ * velocity_alloc_rx_buf - allocate aligned receive buffer
+ * @vptr: velocity
+ * @idx: ring index
+ *
+ * Allocate a new full sized buffer for the reception of a frame and
+ * map it into PCI space for the hardware to use. The hardware
+ * requires *64* byte alignment of the buffer which makes life
+ * less fun than would be ideal.
+ */
+static int velocity_alloc_rx_buf(struct velocity_info *vptr, int idx)
+{
+ struct rx_desc *rd = &(vptr->rx.ring[idx]);
+ struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]);
+
+ rd_info->skb = dev_alloc_skb(vptr->rx.buf_sz + 64);
+ if (rd_info->skb == NULL)
+ return -ENOMEM;
+
+ /*
+ * Do the gymnastics to get the buffer head for data at
+ * 64byte alignment.
+ */
+ skb_reserve(rd_info->skb,
+ 64 - ((unsigned long) rd_info->skb->data & 63));
+ rd_info->skb_dma = pci_map_single(vptr->pdev, rd_info->skb->data,
+ vptr->rx.buf_sz, PCI_DMA_FROMDEVICE);
+
+ /*
+ * Fill in the descriptor to match
+ */
+
+ *((u32 *) & (rd->rdesc0)) = 0;
+ rd->size = cpu_to_le16(vptr->rx.buf_sz) | RX_INTEN;
+ rd->pa_low = cpu_to_le32(rd_info->skb_dma);
+ rd->pa_high = 0;
+ return 0;
+}
+
+
+static int velocity_rx_refill(struct velocity_info *vptr)
+{
+ int dirty = vptr->rx.dirty, done = 0;
+
+ do {
+ struct rx_desc *rd = vptr->rx.ring + dirty;
+
+ /* Fine for an all zero Rx desc at init time as well */
+ if (rd->rdesc0.len & OWNED_BY_NIC)
+ break;
+
+ if (!vptr->rx.info[dirty].skb) {
+ if (velocity_alloc_rx_buf(vptr, dirty) < 0)
+ break;
+ }
+ done++;
+ dirty = (dirty < vptr->options.numrx - 1) ? dirty + 1 : 0;
+ } while (dirty != vptr->rx.curr);
+
+ if (done) {
+ vptr->rx.dirty = dirty;
+ vptr->rx.filled += done;
+ }
+
+ return done;
+}
+
+/**
+ * velocity_free_rd_ring - free receive ring
+ * @vptr: velocity to clean up
+ *
+ * Free the receive buffers for each ring slot and any
+ * attached socket buffers that need to go away.
+ */
+static void velocity_free_rd_ring(struct velocity_info *vptr)
+{
+ int i;
+
+ if (vptr->rx.info == NULL)
+ return;
+
+ for (i = 0; i < vptr->options.numrx; i++) {
+ struct velocity_rd_info *rd_info = &(vptr->rx.info[i]);
+ struct rx_desc *rd = vptr->rx.ring + i;
+
+ memset(rd, 0, sizeof(*rd));
+
+ if (!rd_info->skb)
+ continue;
+ pci_unmap_single(vptr->pdev, rd_info->skb_dma, vptr->rx.buf_sz,
+ PCI_DMA_FROMDEVICE);
+ rd_info->skb_dma = 0;
+
+ dev_kfree_skb(rd_info->skb);
+ rd_info->skb = NULL;
+ }
+
+ kfree(vptr->rx.info);
+ vptr->rx.info = NULL;
+}
+
+/**
+ * velocity_init_rd_ring - set up receive ring
+ * @vptr: velocity to configure
+ *
+ * Allocate and set up the receive buffers for each ring slot and
+ * assign them to the network adapter.
+ */
+static int velocity_init_rd_ring(struct velocity_info *vptr)
+{
+ int ret = -ENOMEM;
+
+ vptr->rx.info = kcalloc(vptr->options.numrx,
+ sizeof(struct velocity_rd_info), GFP_KERNEL);
+ if (!vptr->rx.info)
+ goto out;
+
+ velocity_init_rx_ring_indexes(vptr);
+
+ if (velocity_rx_refill(vptr) != vptr->options.numrx) {
+ VELOCITY_PRT(MSG_LEVEL_ERR, KERN_ERR
+ "%s: failed to allocate RX buffer.\n", vptr->dev->name);
+ velocity_free_rd_ring(vptr);
+ goto out;
+ }
+
+ ret = 0;
+out:
+ return ret;
+}
+
+/**
+ * velocity_init_td_ring - set up transmit ring
+ * @vptr: velocity
+ *
+ * Set up the transmit ring and chain the ring pointers together.
+ * Returns zero on success or a negative posix errno code for
+ * failure.
+ */
+static int velocity_init_td_ring(struct velocity_info *vptr)
+{
+ int j;
+
+ /* Init the TD ring entries */
+ for (j = 0; j < vptr->tx.numq; j++) {
+
+ vptr->tx.infos[j] = kcalloc(vptr->options.numtx,
+ sizeof(struct velocity_td_info),
+ GFP_KERNEL);
+ if (!vptr->tx.infos[j]) {
+ while (--j >= 0)
+ kfree(vptr->tx.infos[j]);
+ return -ENOMEM;
+ }
+
+ vptr->tx.tail[j] = vptr->tx.curr[j] = vptr->tx.used[j] = 0;
+ }
+ return 0;
+}
+
+/**
+ * velocity_free_dma_rings - free PCI ring pointers
+ * @vptr: Velocity to free from
+ *
+ * Clean up the PCI ring buffers allocated to this velocity.
+ */
+static void velocity_free_dma_rings(struct velocity_info *vptr)
+{
+ const int size = vptr->options.numrx * sizeof(struct rx_desc) +
+ vptr->options.numtx * sizeof(struct tx_desc) * vptr->tx.numq;
+
+ pci_free_consistent(vptr->pdev, size, vptr->rx.ring, vptr->rx.pool_dma);
+}
+
+static int velocity_init_rings(struct velocity_info *vptr, int mtu)
+{
+ int ret;
+
+ velocity_set_rxbufsize(vptr, mtu);
+
+ ret = velocity_init_dma_rings(vptr);
+ if (ret < 0)
+ goto out;
+
+ ret = velocity_init_rd_ring(vptr);
+ if (ret < 0)
+ goto err_free_dma_rings_0;
+
+ ret = velocity_init_td_ring(vptr);
+ if (ret < 0)
+ goto err_free_rd_ring_1;
+out:
+ return ret;
+
+err_free_rd_ring_1:
+ velocity_free_rd_ring(vptr);
+err_free_dma_rings_0:
+ velocity_free_dma_rings(vptr);
+ goto out;
+}
+
+/**
+ * velocity_free_tx_buf - free transmit buffer
+ * @vptr: velocity
+ * @tdinfo: buffer
+ *
+ * Release an transmit buffer. If the buffer was preallocated then
+ * recycle it, if not then unmap the buffer.
+ */
+static void velocity_free_tx_buf(struct velocity_info *vptr,
+ struct velocity_td_info *tdinfo, struct tx_desc *td)
+{
+ struct sk_buff *skb = tdinfo->skb;
+
+ /*
+ * Don't unmap the pre-allocated tx_bufs
+ */
+ if (tdinfo->skb_dma) {
+ int i;
+
+ for (i = 0; i < tdinfo->nskb_dma; i++) {
+ size_t pktlen = max_t(size_t, skb->len, ETH_ZLEN);
+
+ /* For scatter-gather */
+ if (skb_shinfo(skb)->nr_frags > 0)
+ pktlen = max_t(size_t, pktlen,
+ td->td_buf[i].size & ~TD_QUEUE);
+
+ pci_unmap_single(vptr->pdev, tdinfo->skb_dma[i],
+ le16_to_cpu(pktlen), PCI_DMA_TODEVICE);
+ }
+ }
+ dev_kfree_skb_irq(skb);
+ tdinfo->skb = NULL;
+}
+
+/*
+ * FIXME: could we merge this with velocity_free_tx_buf ?
+ */
+static void velocity_free_td_ring_entry(struct velocity_info *vptr,
+ int q, int n)
+{
+ struct velocity_td_info *td_info = &(vptr->tx.infos[q][n]);
+ int i;
+
+ if (td_info == NULL)
+ return;
+
+ if (td_info->skb) {
+ for (i = 0; i < td_info->nskb_dma; i++) {
+ if (td_info->skb_dma[i]) {
+ pci_unmap_single(vptr->pdev, td_info->skb_dma[i],
+ td_info->skb->len, PCI_DMA_TODEVICE);
+ td_info->skb_dma[i] = 0;
+ }
+ }
+ dev_kfree_skb(td_info->skb);
+ td_info->skb = NULL;
+ }
+}
+
+/**
+ * velocity_free_td_ring - free td ring
+ * @vptr: velocity
+ *
+ * Free up the transmit ring for this particular velocity adapter.
+ * We free the ring contents but not the ring itself.
+ */
+static void velocity_free_td_ring(struct velocity_info *vptr)
+{
+ int i, j;
+
+ for (j = 0; j < vptr->tx.numq; j++) {
+ if (vptr->tx.infos[j] == NULL)
+ continue;
+ for (i = 0; i < vptr->options.numtx; i++)
+ velocity_free_td_ring_entry(vptr, j, i);
+
+ kfree(vptr->tx.infos[j]);
+ vptr->tx.infos[j] = NULL;
+ }
+}
+
+static void velocity_free_rings(struct velocity_info *vptr)
+{
+ velocity_free_td_ring(vptr);
+ velocity_free_rd_ring(vptr);
+ velocity_free_dma_rings(vptr);
+}
+
+/**
+ * velocity_error - handle error from controller
+ * @vptr: velocity
+ * @status: card status
+ *
+ * Process an error report from the hardware and attempt to recover
+ * the card itself. At the moment we cannot recover from some
+ * theoretically impossible errors but this could be fixed using
+ * the pci_device_failed logic to bounce the hardware
+ *
+ */
+static void velocity_error(struct velocity_info *vptr, int status)
+{
+
+ if (status & ISR_TXSTLI) {
+ struct mac_regs __iomem *regs = vptr->mac_regs;
+
+ printk(KERN_ERR "TD structure error TDindex=%hx\n", readw(®s->TDIdx[0]));
+ BYTE_REG_BITS_ON(TXESR_TDSTR, ®s->TXESR);
+ writew(TRDCSR_RUN, ®s->TDCSRClr);
+ netif_stop_queue(vptr->dev);
+
+ /* FIXME: port over the pci_device_failed code and use it
+ here */
+ }
+
+ if (status & ISR_SRCI) {
+ struct mac_regs __iomem *regs = vptr->mac_regs;
+ int linked;
+
+ if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
+ vptr->mii_status = check_connection_type(regs);
+
+ /*
+ * If it is a 3119, disable frame bursting in
+ * halfduplex mode and enable it in fullduplex
+ * mode
+ */
+ if (vptr->rev_id < REV_ID_VT3216_A0) {
+ if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
+ BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR);
+ else
+ BYTE_REG_BITS_OFF(TCR_TB2BDIS, ®s->TCR);
+ }
+ /*
+ * Only enable CD heart beat counter in 10HD mode
+ */
+ if (!(vptr->mii_status & VELOCITY_DUPLEX_FULL) && (vptr->mii_status & VELOCITY_SPEED_10))
+ BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG);
+ else
+ BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG);
+
+ setup_queue_timers(vptr);
+ }
+ /*
+ * Get link status from PHYSR0
+ */
+ linked = readb(®s->PHYSR0) & PHYSR0_LINKGD;
+
+ if (linked) {
+ vptr->mii_status &= ~VELOCITY_LINK_FAIL;
+ netif_carrier_on(vptr->dev);
+ } else {
+ vptr->mii_status |= VELOCITY_LINK_FAIL;
+ netif_carrier_off(vptr->dev);
+ }
+
+ velocity_print_link_status(vptr);
+ enable_flow_control_ability(vptr);
+
+ /*
+ * Re-enable auto-polling because SRCI will disable
+ * auto-polling
+ */
+
+ enable_mii_autopoll(regs);
+
+ if (vptr->mii_status & VELOCITY_LINK_FAIL)
+ netif_stop_queue(vptr->dev);
+ else
+ netif_wake_queue(vptr->dev);
+
+ }
+ if (status & ISR_MIBFI)
+ velocity_update_hw_mibs(vptr);
+ if (status & ISR_LSTEI)
+ mac_rx_queue_wake(vptr->mac_regs);
+}
+
+/**
+ * tx_srv - transmit interrupt service
+ * @vptr; Velocity
+ *
+ * Scan the queues looking for transmitted packets that
+ * we can complete and clean up. Update any statistics as
+ * necessary/
+ */
+static int velocity_tx_srv(struct velocity_info *vptr)
+{
+ struct tx_desc *td;
+ int qnum;
+ int full = 0;
+ int idx;
+ int works = 0;
+ struct velocity_td_info *tdinfo;
+ struct net_device_stats *stats = &vptr->dev->stats;
+
+ for (qnum = 0; qnum < vptr->tx.numq; qnum++) {
+ for (idx = vptr->tx.tail[qnum]; vptr->tx.used[qnum] > 0;
+ idx = (idx + 1) % vptr->options.numtx) {
+
+ /*
+ * Get Tx Descriptor
+ */
+ td = &(vptr->tx.rings[qnum][idx]);
+ tdinfo = &(vptr->tx.infos[qnum][idx]);
+
+ if (td->tdesc0.len & OWNED_BY_NIC)
+ break;
+
+ if ((works++ > 15))
+ break;
+
+ if (td->tdesc0.TSR & TSR0_TERR) {
+ stats->tx_errors++;
+ stats->tx_dropped++;
+ if (td->tdesc0.TSR & TSR0_CDH)
+ stats->tx_heartbeat_errors++;
+ if (td->tdesc0.TSR & TSR0_CRS)
+ stats->tx_carrier_errors++;
+ if (td->tdesc0.TSR & TSR0_ABT)
+ stats->tx_aborted_errors++;
+ if (td->tdesc0.TSR & TSR0_OWC)
+ stats->tx_window_errors++;
+ } else {
+ stats->tx_packets++;
+ stats->tx_bytes += tdinfo->skb->len;
+ }
+ velocity_free_tx_buf(vptr, tdinfo, td);
+ vptr->tx.used[qnum]--;
+ }
+ vptr->tx.tail[qnum] = idx;
+
+ if (AVAIL_TD(vptr, qnum) < 1)
+ full = 1;
+ }
+ /*
+ * Look to see if we should kick the transmit network
+ * layer for more work.
+ */
+ if (netif_queue_stopped(vptr->dev) && (full == 0) &&
+ (!(vptr->mii_status & VELOCITY_LINK_FAIL))) {
+ netif_wake_queue(vptr->dev);
+ }
+ return works;
+}
+
+/**
+ * velocity_rx_csum - checksum process
+ * @rd: receive packet descriptor
+ * @skb: network layer packet buffer
+ *
+ * Process the status bits for the received packet and determine
+ * if the checksum was computed and verified by the hardware
+ */
+static inline void velocity_rx_csum(struct rx_desc *rd, struct sk_buff *skb)
+{
+ skb_checksum_none_assert(skb);
+
+ if (rd->rdesc1.CSM & CSM_IPKT) {
+ if (rd->rdesc1.CSM & CSM_IPOK) {
+ if ((rd->rdesc1.CSM & CSM_TCPKT) ||
+ (rd->rdesc1.CSM & CSM_UDPKT)) {
+ if (!(rd->rdesc1.CSM & CSM_TUPOK))
+ return;
+ }
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ }
+ }
+}
+
+/**
+ * velocity_rx_copy - in place Rx copy for small packets
+ * @rx_skb: network layer packet buffer candidate
+ * @pkt_size: received data size
+ * @rd: receive packet descriptor
+ * @dev: network device
+ *
+ * Replace the current skb that is scheduled for Rx processing by a
+ * shorter, immediately allocated skb, if the received packet is small
+ * enough. This function returns a negative value if the received
+ * packet is too big or if memory is exhausted.
+ */
+static int velocity_rx_copy(struct sk_buff **rx_skb, int pkt_size,
+ struct velocity_info *vptr)
+{
+ int ret = -1;
+ if (pkt_size < rx_copybreak) {
+ struct sk_buff *new_skb;
+
+ new_skb = netdev_alloc_skb_ip_align(vptr->dev, pkt_size);
+ if (new_skb) {
+ new_skb->ip_summed = rx_skb[0]->ip_summed;
+ skb_copy_from_linear_data(*rx_skb, new_skb->data, pkt_size);
+ *rx_skb = new_skb;
+ ret = 0;
+ }
+
+ }
+ return ret;
+}
+
+/**
+ * velocity_iph_realign - IP header alignment
+ * @vptr: velocity we are handling
+ * @skb: network layer packet buffer
+ * @pkt_size: received data size
+ *
+ * Align IP header on a 2 bytes boundary. This behavior can be
+ * configured by the user.
+ */
+static inline void velocity_iph_realign(struct velocity_info *vptr,
+ struct sk_buff *skb, int pkt_size)
+{
+ if (vptr->flags & VELOCITY_FLAGS_IP_ALIGN) {
+ memmove(skb->data + 2, skb->data, pkt_size);
+ skb_reserve(skb, 2);
+ }
+}
+
+/**
+ * velocity_receive_frame - received packet processor
+ * @vptr: velocity we are handling
+ * @idx: ring index
+ *
+ * A packet has arrived. We process the packet and if appropriate
+ * pass the frame up the network stack
+ */
+static int velocity_receive_frame(struct velocity_info *vptr, int idx)
+{
+ void (*pci_action)(struct pci_dev *, dma_addr_t, size_t, int);
+ struct net_device_stats *stats = &vptr->dev->stats;
+ struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]);
+ struct rx_desc *rd = &(vptr->rx.ring[idx]);
+ int pkt_len = le16_to_cpu(rd->rdesc0.len) & 0x3fff;
+ struct sk_buff *skb;
+
+ if (rd->rdesc0.RSR & (RSR_STP | RSR_EDP)) {
+ VELOCITY_PRT(MSG_LEVEL_VERBOSE, KERN_ERR " %s : the received frame span multple RDs.\n", vptr->dev->name);
+ stats->rx_length_errors++;
+ return -EINVAL;
+ }
+
+ if (rd->rdesc0.RSR & RSR_MAR)
+ stats->multicast++;
+
+ skb = rd_info->skb;
+
+ pci_dma_sync_single_for_cpu(vptr->pdev, rd_info->skb_dma,
+ vptr->rx.buf_sz, PCI_DMA_FROMDEVICE);
+
+ /*
+ * Drop frame not meeting IEEE 802.3
+ */
+
+ if (vptr->flags & VELOCITY_FLAGS_VAL_PKT_LEN) {
+ if (rd->rdesc0.RSR & RSR_RL) {
+ stats->rx_length_errors++;
+ return -EINVAL;
+ }
+ }
+
+ pci_action = pci_dma_sync_single_for_device;
+
+ velocity_rx_csum(rd, skb);
+
+ if (velocity_rx_copy(&skb, pkt_len, vptr) < 0) {
+ velocity_iph_realign(vptr, skb, pkt_len);
+ pci_action = pci_unmap_single;
+ rd_info->skb = NULL;
+ }
+
+ pci_action(vptr->pdev, rd_info->skb_dma, vptr->rx.buf_sz,
+ PCI_DMA_FROMDEVICE);
+
+ skb_put(skb, pkt_len - 4);
+ skb->protocol = eth_type_trans(skb, vptr->dev);
+
+ if (rd->rdesc0.RSR & RSR_DETAG) {
+ u16 vid = swab16(le16_to_cpu(rd->rdesc1.PQTAG));
+
+ __vlan_hwaccel_put_tag(skb, vid);
+ }
+ netif_rx(skb);
+
+ stats->rx_bytes += pkt_len;
+ stats->rx_packets++;
+
+ return 0;
+}
+
+/**
+ * velocity_rx_srv - service RX interrupt
+ * @vptr: velocity
+ *
+ * Walk the receive ring of the velocity adapter and remove
+ * any received packets from the receive queue. Hand the ring
+ * slots back to the adapter for reuse.
+ */
+static int velocity_rx_srv(struct velocity_info *vptr, int budget_left)
+{
+ struct net_device_stats *stats = &vptr->dev->stats;
+ int rd_curr = vptr->rx.curr;
+ int works = 0;
+
+ while (works < budget_left) {
+ struct rx_desc *rd = vptr->rx.ring + rd_curr;
+
+ if (!vptr->rx.info[rd_curr].skb)
+ break;
+
+ if (rd->rdesc0.len & OWNED_BY_NIC)
+ break;
+
+ rmb();
+
+ /*
+ * Don't drop CE or RL error frame although RXOK is off
+ */
+ if (rd->rdesc0.RSR & (RSR_RXOK | RSR_CE | RSR_RL)) {
+ if (velocity_receive_frame(vptr, rd_curr) < 0)
+ stats->rx_dropped++;
+ } else {
+ if (rd->rdesc0.RSR & RSR_CRC)
+ stats->rx_crc_errors++;
+ if (rd->rdesc0.RSR & RSR_FAE)
+ stats->rx_frame_errors++;
+
+ stats->rx_dropped++;
+ }
+
+ rd->size |= RX_INTEN;
+
+ rd_curr++;
+ if (rd_curr >= vptr->options.numrx)
+ rd_curr = 0;
+ works++;
+ }
+
+ vptr->rx.curr = rd_curr;
+
+ if ((works > 0) && (velocity_rx_refill(vptr) > 0))
+ velocity_give_many_rx_descs(vptr);
+
+ VAR_USED(stats);
+ return works;
+}
+
+static int velocity_poll(struct napi_struct *napi, int budget)
+{
+ struct velocity_info *vptr = container_of(napi,
+ struct velocity_info, napi);
+ unsigned int rx_done;
+ unsigned long flags;
+
+ spin_lock_irqsave(&vptr->lock, flags);
+ /*
+ * Do rx and tx twice for performance (taken from the VIA
+ * out-of-tree driver).
+ */
+ rx_done = velocity_rx_srv(vptr, budget / 2);
+ velocity_tx_srv(vptr);
+ rx_done += velocity_rx_srv(vptr, budget - rx_done);
+ velocity_tx_srv(vptr);
+
+ /* If budget not fully consumed, exit the polling mode */
+ if (rx_done < budget) {
+ napi_complete(napi);
+ mac_enable_int(vptr->mac_regs);
+ }
+ spin_unlock_irqrestore(&vptr->lock, flags);
+
+ return rx_done;
+}
+
+/**
+ * velocity_intr - interrupt callback
+ * @irq: interrupt number
+ * @dev_instance: interrupting device
+ *
+ * Called whenever an interrupt is generated by the velocity
+ * adapter IRQ line. We may not be the source of the interrupt
+ * and need to identify initially if we are, and if not exit as
+ * efficiently as possible.
+ */
+static irqreturn_t velocity_intr(int irq, void *dev_instance)
+{
+ struct net_device *dev = dev_instance;
+ struct velocity_info *vptr = netdev_priv(dev);
+ u32 isr_status;
+
+ spin_lock(&vptr->lock);
+ isr_status = mac_read_isr(vptr->mac_regs);
+
+ /* Not us ? */
+ if (isr_status == 0) {
+ spin_unlock(&vptr->lock);
+ return IRQ_NONE;
+ }
+
+ /* Ack the interrupt */
+ mac_write_isr(vptr->mac_regs, isr_status);
+
+ if (likely(napi_schedule_prep(&vptr->napi))) {
+ mac_disable_int(vptr->mac_regs);
+ __napi_schedule(&vptr->napi);
+ }
+
+ if (isr_status & (~(ISR_PRXI | ISR_PPRXI | ISR_PTXI | ISR_PPTXI)))
+ velocity_error(vptr, isr_status);
+
+ spin_unlock(&vptr->lock);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * velocity_open - interface activation callback
+ * @dev: network layer device to open
+ *
+ * Called when the network layer brings the interface up. Returns
+ * a negative posix error code on failure, or zero on success.
+ *
+ * All the ring allocation and set up is done on open for this
+ * adapter to minimise memory usage when inactive
+ */
+static int velocity_open(struct net_device *dev)
+{
+ struct velocity_info *vptr = netdev_priv(dev);
+ int ret;
+
+ ret = velocity_init_rings(vptr, dev->mtu);
+ if (ret < 0)
+ goto out;
+
+ /* Ensure chip is running */
+ pci_set_power_state(vptr->pdev, PCI_D0);
+
+ velocity_init_registers(vptr, VELOCITY_INIT_COLD);
+
+ ret = request_irq(vptr->pdev->irq, velocity_intr, IRQF_SHARED,
+ dev->name, dev);
+ if (ret < 0) {
+ /* Power down the chip */
+ pci_set_power_state(vptr->pdev, PCI_D3hot);
+ velocity_free_rings(vptr);
+ goto out;
+ }
+
+ velocity_give_many_rx_descs(vptr);
+
+ mac_enable_int(vptr->mac_regs);
+ netif_start_queue(dev);
+ napi_enable(&vptr->napi);
+ vptr->flags |= VELOCITY_FLAGS_OPENED;
+out:
+ return ret;
+}
+
+/**
+ * velocity_shutdown - shut down the chip
+ * @vptr: velocity to deactivate
+ *
+ * Shuts down the internal operations of the velocity and
+ * disables interrupts, autopolling, transmit and receive
+ */
+static void velocity_shutdown(struct velocity_info *vptr)
+{
+ struct mac_regs __iomem *regs = vptr->mac_regs;
+ mac_disable_int(regs);
+ writel(CR0_STOP, ®s->CR0Set);
+ writew(0xFFFF, ®s->TDCSRClr);
+ writeb(0xFF, ®s->RDCSRClr);
+ safe_disable_mii_autopoll(regs);
+ mac_clear_isr(regs);
+}
+
+/**
+ * velocity_change_mtu - MTU change callback
+ * @dev: network device
+ * @new_mtu: desired MTU
+ *
+ * Handle requests from the networking layer for MTU change on
+ * this interface. It gets called on a change by the network layer.
+ * Return zero for success or negative posix error code.
+ */
+static int velocity_change_mtu(struct net_device *dev, int new_mtu)
+{
+ struct velocity_info *vptr = netdev_priv(dev);
+ int ret = 0;
+
+ if ((new_mtu < VELOCITY_MIN_MTU) || new_mtu > (VELOCITY_MAX_MTU)) {
+ VELOCITY_PRT(MSG_LEVEL_ERR, KERN_NOTICE "%s: Invalid MTU.\n",
+ vptr->dev->name);
+ ret = -EINVAL;
+ goto out_0;
+ }
+
+ if (!netif_running(dev)) {
+ dev->mtu = new_mtu;
+ goto out_0;
+ }
+
+ if (dev->mtu != new_mtu) {
+ struct velocity_info *tmp_vptr;
+ unsigned long flags;
+ struct rx_info rx;
+ struct tx_info tx;
+
+ tmp_vptr = kzalloc(sizeof(*tmp_vptr), GFP_KERNEL);
+ if (!tmp_vptr) {
+ ret = -ENOMEM;
+ goto out_0;
+ }
+
+ tmp_vptr->dev = dev;
+ tmp_vptr->pdev = vptr->pdev;
+ tmp_vptr->options = vptr->options;
+ tmp_vptr->tx.numq = vptr->tx.numq;
+
+ ret = velocity_init_rings(tmp_vptr, new_mtu);
+ if (ret < 0)
+ goto out_free_tmp_vptr_1;
+
+ spin_lock_irqsave(&vptr->lock, flags);
+
+ netif_stop_queue(dev);
+ velocity_shutdown(vptr);
+
+ rx = vptr->rx;
+ tx = vptr->tx;
+
+ vptr->rx = tmp_vptr->rx;
+ vptr->tx = tmp_vptr->tx;
+
+ tmp_vptr->rx = rx;
+ tmp_vptr->tx = tx;
+
+ dev->mtu = new_mtu;
+
+ velocity_init_registers(vptr, VELOCITY_INIT_COLD);
+
+ velocity_give_many_rx_descs(vptr);
+
+ mac_enable_int(vptr->mac_regs);
+ netif_start_queue(dev);
+
+ spin_unlock_irqrestore(&vptr->lock, flags);
+
+ velocity_free_rings(tmp_vptr);
+
+out_free_tmp_vptr_1:
+ kfree(tmp_vptr);
+ }
+out_0:
+ return ret;
+}
+
+/**
+ * velocity_mii_ioctl - MII ioctl handler
+ * @dev: network device
+ * @ifr: the ifreq block for the ioctl
+ * @cmd: the command
+ *
+ * Process MII requests made via ioctl from the network layer. These
+ * are used by tools like kudzu to interrogate the link state of the
+ * hardware
+ */
+static int velocity_mii_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+ struct velocity_info *vptr = netdev_priv(dev);
+ struct mac_regs __iomem *regs = vptr->mac_regs;
+ unsigned long flags;
+ struct mii_ioctl_data *miidata = if_mii(ifr);
+ int err;
+
+ switch (cmd) {
+ case SIOCGMIIPHY:
+ miidata->phy_id = readb(®s->MIIADR) & 0x1f;
+ break;
+ case SIOCGMIIREG:
+ if (velocity_mii_read(vptr->mac_regs, miidata->reg_num & 0x1f, &(miidata->val_out)) < 0)
+ return -ETIMEDOUT;
+ break;
+ case SIOCSMIIREG:
+ spin_lock_irqsave(&vptr->lock, flags);
+ err = velocity_mii_write(vptr->mac_regs, miidata->reg_num & 0x1f, miidata->val_in);
+ spin_unlock_irqrestore(&vptr->lock, flags);
+ check_connection_type(vptr->mac_regs);
+ if (err)
+ return err;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+ return 0;
+}
+
+/**
+ * velocity_ioctl - ioctl entry point
+ * @dev: network device
+ * @rq: interface request ioctl
+ * @cmd: command code
+ *
+ * Called when the user issues an ioctl request to the network
+ * device in question. The velocity interface supports MII.
+ */
+static int velocity_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+ struct velocity_info *vptr = netdev_priv(dev);
+ int ret;
+
+ /* If we are asked for information and the device is power
+ saving then we need to bring the device back up to talk to it */
+
+ if (!netif_running(dev))
+ pci_set_power_state(vptr->pdev, PCI_D0);
+
+ switch (cmd) {
+ case SIOCGMIIPHY: /* Get address of MII PHY in use. */
+ case SIOCGMIIREG: /* Read MII PHY register. */
+ case SIOCSMIIREG: /* Write to MII PHY register. */
+ ret = velocity_mii_ioctl(dev, rq, cmd);
+ break;
+
+ default:
+ ret = -EOPNOTSUPP;
+ }
+ if (!netif_running(dev))
+ pci_set_power_state(vptr->pdev, PCI_D3hot);
+
+
+ return ret;
+}
+
+/**
+ * velocity_get_status - statistics callback
+ * @dev: network device
+ *
+ * Callback from the network layer to allow driver statistics
+ * to be resynchronized with hardware collected state. In the
+ * case of the velocity we need to pull the MIB counters from
+ * the hardware into the counters before letting the network
+ * layer display them.
+ */
+static struct net_device_stats *velocity_get_stats(struct net_device *dev)
+{
+ struct velocity_info *vptr = netdev_priv(dev);
+
+ /* If the hardware is down, don't touch MII */
+ if (!netif_running(dev))
+ return &dev->stats;
+
+ spin_lock_irq(&vptr->lock);
+ velocity_update_hw_mibs(vptr);
+ spin_unlock_irq(&vptr->lock);
+
+ dev->stats.rx_packets = vptr->mib_counter[HW_MIB_ifRxAllPkts];
+ dev->stats.rx_errors = vptr->mib_counter[HW_MIB_ifRxErrorPkts];
+ dev->stats.rx_length_errors = vptr->mib_counter[HW_MIB_ifInRangeLengthErrors];
+
+// unsigned long rx_dropped; /* no space in linux buffers */
+ dev->stats.collisions = vptr->mib_counter[HW_MIB_ifTxEtherCollisions];
+ /* detailed rx_errors: */
+// unsigned long rx_length_errors;
+// unsigned long rx_over_errors; /* receiver ring buff overflow */
+ dev->stats.rx_crc_errors = vptr->mib_counter[HW_MIB_ifRxPktCRCE];
+// unsigned long rx_frame_errors; /* recv'd frame alignment error */
+// unsigned long rx_fifo_errors; /* recv'r fifo overrun */
+// unsigned long rx_missed_errors; /* receiver missed packet */
+
+ /* detailed tx_errors */
+// unsigned long tx_fifo_errors;
+
+ return &dev->stats;
+}
+
+/**
+ * velocity_close - close adapter callback
+ * @dev: network device
+ *
+ * Callback from the network layer when the velocity is being
+ * deactivated by the network layer
+ */
+static int velocity_close(struct net_device *dev)
+{
+ struct velocity_info *vptr = netdev_priv(dev);
+
+ napi_disable(&vptr->napi);
+ netif_stop_queue(dev);
+ velocity_shutdown(vptr);
+
+ if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED)
+ velocity_get_ip(vptr);
+ if (dev->irq != 0)
+ free_irq(dev->irq, dev);
+
+ /* Power down the chip */
+ pci_set_power_state(vptr->pdev, PCI_D3hot);
+
+ velocity_free_rings(vptr);
+
+ vptr->flags &= (~VELOCITY_FLAGS_OPENED);
+ return 0;
+}
+
+/**
+ * velocity_xmit - transmit packet callback
+ * @skb: buffer to transmit
+ * @dev: network device
+ *
+ * Called by the networ layer to request a packet is queued to
+ * the velocity. Returns zero on success.
+ */
+static netdev_tx_t velocity_xmit(struct sk_buff *skb,
+ struct net_device *dev)
+{
+ struct velocity_info *vptr = netdev_priv(dev);
+ int qnum = 0;
+ struct tx_desc *td_ptr;
+ struct velocity_td_info *tdinfo;
+ unsigned long flags;
+ int pktlen;
+ int index, prev;
+ int i = 0;
+
+ if (skb_padto(skb, ETH_ZLEN))
+ goto out;
+
+ /* The hardware can handle at most 7 memory segments, so merge
+ * the skb if there are more */
+ if (skb_shinfo(skb)->nr_frags > 6 && __skb_linearize(skb)) {
+ kfree_skb(skb);
+ return NETDEV_TX_OK;
+ }
+
+ pktlen = skb_shinfo(skb)->nr_frags == 0 ?
+ max_t(unsigned int, skb->len, ETH_ZLEN) :
+ skb_headlen(skb);
+
+ spin_lock_irqsave(&vptr->lock, flags);
+
+ index = vptr->tx.curr[qnum];
+ td_ptr = &(vptr->tx.rings[qnum][index]);
+ tdinfo = &(vptr->tx.infos[qnum][index]);
+
+ td_ptr->tdesc1.TCR = TCR0_TIC;
+ td_ptr->td_buf[0].size &= ~TD_QUEUE;
+
+ /*
+ * Map the linear network buffer into PCI space and
+ * add it to the transmit ring.
+ */
+ tdinfo->skb = skb;
+ tdinfo->skb_dma[0] = pci_map_single(vptr->pdev, skb->data, pktlen, PCI_DMA_TODEVICE);
+ td_ptr->tdesc0.len = cpu_to_le16(pktlen);
+ td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
+ td_ptr->td_buf[0].pa_high = 0;
+ td_ptr->td_buf[0].size = cpu_to_le16(pktlen);
+
+ /* Handle fragments */
+ for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+ skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
+
+ tdinfo->skb_dma[i + 1] = pci_map_page(vptr->pdev, frag->page,
+ frag->page_offset, frag->size,
+ PCI_DMA_TODEVICE);
+
+ td_ptr->td_buf[i + 1].pa_low = cpu_to_le32(tdinfo->skb_dma[i + 1]);
+ td_ptr->td_buf[i + 1].pa_high = 0;
+ td_ptr->td_buf[i + 1].size = cpu_to_le16(frag->size);
+ }
+ tdinfo->nskb_dma = i + 1;
+
+ td_ptr->tdesc1.cmd = TCPLS_NORMAL + (tdinfo->nskb_dma + 1) * 16;
+
+ if (vlan_tx_tag_present(skb)) {
+ td_ptr->tdesc1.vlan = cpu_to_le16(vlan_tx_tag_get(skb));
+ td_ptr->tdesc1.TCR |= TCR0_VETAG;
+ }
+
+ /*
+ * Handle hardware checksum
+ */
+ if (skb->ip_summed == CHECKSUM_PARTIAL) {
+ const struct iphdr *ip = ip_hdr(skb);
+ if (ip->protocol == IPPROTO_TCP)
+ td_ptr->tdesc1.TCR |= TCR0_TCPCK;
+ else if (ip->protocol == IPPROTO_UDP)
+ td_ptr->tdesc1.TCR |= (TCR0_UDPCK);
+ td_ptr->tdesc1.TCR |= TCR0_IPCK;
+ }
+
+ prev = index - 1;
+ if (prev < 0)
+ prev = vptr->options.numtx - 1;
+ td_ptr->tdesc0.len |= OWNED_BY_NIC;
+ vptr->tx.used[qnum]++;
+ vptr->tx.curr[qnum] = (index + 1) % vptr->options.numtx;
+
+ if (AVAIL_TD(vptr, qnum) < 1)
+ netif_stop_queue(dev);
+
+ td_ptr = &(vptr->tx.rings[qnum][prev]);
+ td_ptr->td_buf[0].size |= TD_QUEUE;
+ mac_tx_queue_wake(vptr->mac_regs, qnum);
+
+ spin_unlock_irqrestore(&vptr->lock, flags);
+out:
+ return NETDEV_TX_OK;
+}
+
+static const struct net_device_ops velocity_netdev_ops = {
+ .ndo_open = velocity_open,
+ .ndo_stop = velocity_close,
+ .ndo_start_xmit = velocity_xmit,
+ .ndo_get_stats = velocity_get_stats,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_mac_address = eth_mac_addr,
+ .ndo_set_rx_mode = velocity_set_multi,
+ .ndo_change_mtu = velocity_change_mtu,
+ .ndo_do_ioctl = velocity_ioctl,
+ .ndo_vlan_rx_add_vid = velocity_vlan_rx_add_vid,
+ .ndo_vlan_rx_kill_vid = velocity_vlan_rx_kill_vid,
+};
+
+/**
+ * velocity_init_info - init private data
+ * @pdev: PCI device
+ * @vptr: Velocity info
+ * @info: Board type
+ *
+ * Set up the initial velocity_info struct for the device that has been
+ * discovered.
+ */
+static void __devinit velocity_init_info(struct pci_dev *pdev,
+ struct velocity_info *vptr,
+ const struct velocity_info_tbl *info)
+{
+ memset(vptr, 0, sizeof(struct velocity_info));
+
+ vptr->pdev = pdev;
+ vptr->chip_id = info->chip_id;
+ vptr->tx.numq = info->txqueue;
+ vptr->multicast_limit = MCAM_SIZE;
+ spin_lock_init(&vptr->lock);
+}
+
+/**
+ * velocity_get_pci_info - retrieve PCI info for device
+ * @vptr: velocity device
+ * @pdev: PCI device it matches
+ *
+ * Retrieve the PCI configuration space data that interests us from
+ * the kernel PCI layer
+ */
+static int __devinit velocity_get_pci_info(struct velocity_info *vptr, struct pci_dev *pdev)
+{
+ vptr->rev_id = pdev->revision;
+
+ pci_set_master(pdev);
+
+ vptr->ioaddr = pci_resource_start(pdev, 0);
+ vptr->memaddr = pci_resource_start(pdev, 1);
+
+ if (!(pci_resource_flags(pdev, 0) & IORESOURCE_IO)) {
+ dev_err(&pdev->dev,
+ "region #0 is not an I/O resource, aborting.\n");
+ return -EINVAL;
+ }
+
+ if ((pci_resource_flags(pdev, 1) & IORESOURCE_IO)) {
+ dev_err(&pdev->dev,
+ "region #1 is an I/O resource, aborting.\n");
+ return -EINVAL;
+ }
+
+ if (pci_resource_len(pdev, 1) < VELOCITY_IO_SIZE) {
+ dev_err(&pdev->dev, "region #1 is too small.\n");
+ return -EINVAL;
+ }
+ vptr->pdev = pdev;
+
+ return 0;
+}
+
+/**
+ * velocity_print_info - per driver data
+ * @vptr: velocity
+ *
+ * Print per driver data as the kernel driver finds Velocity
+ * hardware
+ */
+static void __devinit velocity_print_info(struct velocity_info *vptr)
+{
+ struct net_device *dev = vptr->dev;
+
+ printk(KERN_INFO "%s: %s\n", dev->name, get_chip_name(vptr->chip_id));
+ printk(KERN_INFO "%s: Ethernet Address: %pM\n",
+ dev->name, dev->dev_addr);
+}
+
+static u32 velocity_get_link(struct net_device *dev)
+{
+ struct velocity_info *vptr = netdev_priv(dev);
+ struct mac_regs __iomem *regs = vptr->mac_regs;
+ return BYTE_REG_BITS_IS_ON(PHYSR0_LINKGD, ®s->PHYSR0) ? 1 : 0;
+}
+
+/**
+ * velocity_found1 - set up discovered velocity card
+ * @pdev: PCI device
+ * @ent: PCI device table entry that matched
+ *
+ * Configure a discovered adapter from scratch. Return a negative
+ * errno error code on failure paths.
+ */
+static int __devinit velocity_found1(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ static int first = 1;
+ struct net_device *dev;
+ int i;
+ const char *drv_string;
+ const struct velocity_info_tbl *info = &chip_info_table[ent->driver_data];
+ struct velocity_info *vptr;
+ struct mac_regs __iomem *regs;
+ int ret = -ENOMEM;
+
+ /* FIXME: this driver, like almost all other ethernet drivers,
+ * can support more than MAX_UNITS.
+ */
+ if (velocity_nics >= MAX_UNITS) {
+ dev_notice(&pdev->dev, "already found %d NICs.\n",
+ velocity_nics);
+ return -ENODEV;
+ }
+
+ dev = alloc_etherdev(sizeof(struct velocity_info));
+ if (!dev) {
+ dev_err(&pdev->dev, "allocate net device failed.\n");
+ goto out;
+ }
+
+ /* Chain it all together */
+
+ SET_NETDEV_DEV(dev, &pdev->dev);
+ vptr = netdev_priv(dev);
+
+
+ if (first) {
+ printk(KERN_INFO "%s Ver. %s\n",
+ VELOCITY_FULL_DRV_NAM, VELOCITY_VERSION);
+ printk(KERN_INFO "Copyright (c) 2002, 2003 VIA Networking Technologies, Inc.\n");
+ printk(KERN_INFO "Copyright (c) 2004 Red Hat Inc.\n");
+ first = 0;
+ }
+
+ velocity_init_info(pdev, vptr, info);
+
+ vptr->dev = dev;
+
+ ret = pci_enable_device(pdev);
+ if (ret < 0)
+ goto err_free_dev;
+
+ dev->irq = pdev->irq;
+
+ ret = velocity_get_pci_info(vptr, pdev);
+ if (ret < 0) {
+ /* error message already printed */
+ goto err_disable;
+ }
+
+ ret = pci_request_regions(pdev, VELOCITY_NAME);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "No PCI resources.\n");
+ goto err_disable;
+ }
+
+ regs = ioremap(vptr->memaddr, VELOCITY_IO_SIZE);
+ if (regs == NULL) {
+ ret = -EIO;
+ goto err_release_res;
+ }
+
+ vptr->mac_regs = regs;
+
+ mac_wol_reset(regs);
+
+ dev->base_addr = vptr->ioaddr;
+
+ for (i = 0; i < 6; i++)
+ dev->dev_addr[i] = readb(®s->PAR[i]);
+
+
+ drv_string = dev_driver_string(&pdev->dev);
+
+ velocity_get_options(&vptr->options, velocity_nics, drv_string);
+
+ /*
+ * Mask out the options cannot be set to the chip
+ */
+
+ vptr->options.flags &= info->flags;
+
+ /*
+ * Enable the chip specified capbilities
+ */
+
+ vptr->flags = vptr->options.flags | (info->flags & 0xFF000000UL);
+
+ vptr->wol_opts = vptr->options.wol_opts;
+ vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
+
+ vptr->phy_id = MII_GET_PHY_ID(vptr->mac_regs);
+
+ dev->irq = pdev->irq;
+ dev->netdev_ops = &velocity_netdev_ops;
+ dev->ethtool_ops = &velocity_ethtool_ops;
+ netif_napi_add(dev, &vptr->napi, velocity_poll, VELOCITY_NAPI_WEIGHT);
+
+ dev->hw_features = NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_HW_VLAN_TX;
+ dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER |
+ NETIF_F_HW_VLAN_RX | NETIF_F_IP_CSUM;
+
+ ret = register_netdev(dev);
+ if (ret < 0)
+ goto err_iounmap;
+
+ if (!velocity_get_link(dev)) {
+ netif_carrier_off(dev);
+ vptr->mii_status |= VELOCITY_LINK_FAIL;
+ }
+
+ velocity_print_info(vptr);
+ pci_set_drvdata(pdev, dev);
+
+ /* and leave the chip powered down */
+
+ pci_set_power_state(pdev, PCI_D3hot);
+ velocity_nics++;
+out:
+ return ret;
+
+err_iounmap:
+ iounmap(regs);
+err_release_res:
+ pci_release_regions(pdev);
+err_disable:
+ pci_disable_device(pdev);
+err_free_dev:
+ free_netdev(dev);
+ goto out;
+}
+
+#ifdef CONFIG_PM
+/**
+ * wol_calc_crc - WOL CRC
+ * @pattern: data pattern
+ * @mask_pattern: mask
+ *
+ * Compute the wake on lan crc hashes for the packet header
+ * we are interested in.
+ */
+static u16 wol_calc_crc(int size, u8 *pattern, u8 *mask_pattern)
+{
+ u16 crc = 0xFFFF;
+ u8 mask;
+ int i, j;
+
+ for (i = 0; i < size; i++) {
+ mask = mask_pattern[i];
+
+ /* Skip this loop if the mask equals to zero */
+ if (mask == 0x00)
+ continue;
+
+ for (j = 0; j < 8; j++) {
+ if ((mask & 0x01) == 0) {
+ mask >>= 1;
+ continue;
+ }
+ mask >>= 1;
+ crc = crc_ccitt(crc, &(pattern[i * 8 + j]), 1);
+ }
+ }
+ /* Finally, invert the result once to get the correct data */
+ crc = ~crc;
+ return bitrev32(crc) >> 16;
+}
+
+/**
+ * velocity_set_wol - set up for wake on lan
+ * @vptr: velocity to set WOL status on
+ *
+ * Set a card up for wake on lan either by unicast or by
+ * ARP packet.
+ *
+ * FIXME: check static buffer is safe here
+ */
+static int velocity_set_wol(struct velocity_info *vptr)
+{
+ struct mac_regs __iomem *regs = vptr->mac_regs;
+ enum speed_opt spd_dpx = vptr->options.spd_dpx;
+ static u8 buf[256];
+ int i;
+
+ static u32 mask_pattern[2][4] = {
+ {0x00203000, 0x000003C0, 0x00000000, 0x0000000}, /* ARP */
+ {0xfffff000, 0xffffffff, 0xffffffff, 0x000ffff} /* Magic Packet */
+ };
+
+ writew(0xFFFF, ®s->WOLCRClr);
+ writeb(WOLCFG_SAB | WOLCFG_SAM, ®s->WOLCFGSet);
+ writew(WOLCR_MAGIC_EN, ®s->WOLCRSet);
+
+ /*
+ if (vptr->wol_opts & VELOCITY_WOL_PHY)
+ writew((WOLCR_LINKON_EN|WOLCR_LINKOFF_EN), ®s->WOLCRSet);
+ */
+
+ if (vptr->wol_opts & VELOCITY_WOL_UCAST)
+ writew(WOLCR_UNICAST_EN, ®s->WOLCRSet);
+
+ if (vptr->wol_opts & VELOCITY_WOL_ARP) {
+ struct arp_packet *arp = (struct arp_packet *) buf;
+ u16 crc;
+ memset(buf, 0, sizeof(struct arp_packet) + 7);
+
+ for (i = 0; i < 4; i++)
+ writel(mask_pattern[0][i], ®s->ByteMask[0][i]);
+
+ arp->type = htons(ETH_P_ARP);
+ arp->ar_op = htons(1);
+
+ memcpy(arp->ar_tip, vptr->ip_addr, 4);
+
+ crc = wol_calc_crc((sizeof(struct arp_packet) + 7) / 8, buf,
+ (u8 *) & mask_pattern[0][0]);
+
+ writew(crc, ®s->PatternCRC[0]);
+ writew(WOLCR_ARP_EN, ®s->WOLCRSet);
+ }
+
+ BYTE_REG_BITS_ON(PWCFG_WOLTYPE, ®s->PWCFGSet);
+ BYTE_REG_BITS_ON(PWCFG_LEGACY_WOLEN, ®s->PWCFGSet);
+
+ writew(0x0FFF, ®s->WOLSRClr);
+
+ if (spd_dpx == SPD_DPX_1000_FULL)
+ goto mac_done;
+
+ if (spd_dpx != SPD_DPX_AUTO)
+ goto advertise_done;
+
+ if (vptr->mii_status & VELOCITY_AUTONEG_ENABLE) {
+ if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
+ MII_REG_BITS_ON(AUXCR_MDPPS, MII_NCONFIG, vptr->mac_regs);
+
+ MII_REG_BITS_OFF(ADVERTISE_1000FULL | ADVERTISE_1000HALF, MII_CTRL1000, vptr->mac_regs);
+ }
+
+ if (vptr->mii_status & VELOCITY_SPEED_1000)
+ MII_REG_BITS_ON(BMCR_ANRESTART, MII_BMCR, vptr->mac_regs);
+
+advertise_done:
+ BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR);
+
+ {
+ u8 GCR;
+ GCR = readb(®s->CHIPGCR);
+ GCR = (GCR & ~CHIPGCR_FCGMII) | CHIPGCR_FCFDX;
+ writeb(GCR, ®s->CHIPGCR);
+ }
+
+mac_done:
+ BYTE_REG_BITS_OFF(ISR_PWEI, ®s->ISR);
+ /* Turn on SWPTAG just before entering power mode */
+ BYTE_REG_BITS_ON(STICKHW_SWPTAG, ®s->STICKHW);
+ /* Go to bed ..... */
+ BYTE_REG_BITS_ON((STICKHW_DS1 | STICKHW_DS0), ®s->STICKHW);
+
+ return 0;
+}
+
+/**
+ * velocity_save_context - save registers
+ * @vptr: velocity
+ * @context: buffer for stored context
+ *
+ * Retrieve the current configuration from the velocity hardware
+ * and stash it in the context structure, for use by the context
+ * restore functions. This allows us to save things we need across
+ * power down states
+ */
+static void velocity_save_context(struct velocity_info *vptr, struct velocity_context *context)
+{
+ struct mac_regs __iomem *regs = vptr->mac_regs;
+ u16 i;
+ u8 __iomem *ptr = (u8 __iomem *)regs;
+
+ for (i = MAC_REG_PAR; i < MAC_REG_CR0_CLR; i += 4)
+ *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
+
+ for (i = MAC_REG_MAR; i < MAC_REG_TDCSR_CLR; i += 4)
+ *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
+
+ for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
+ *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
+
+}
+
+static int velocity_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+ struct net_device *dev = pci_get_drvdata(pdev);
+ struct velocity_info *vptr = netdev_priv(dev);
+ unsigned long flags;
+
+ if (!netif_running(vptr->dev))
+ return 0;
+
+ netif_device_detach(vptr->dev);
+
+ spin_lock_irqsave(&vptr->lock, flags);
+ pci_save_state(pdev);
+
+ if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED) {
+ velocity_get_ip(vptr);
+ velocity_save_context(vptr, &vptr->context);
+ velocity_shutdown(vptr);
+ velocity_set_wol(vptr);
+ pci_enable_wake(pdev, PCI_D3hot, 1);
+ pci_set_power_state(pdev, PCI_D3hot);
+ } else {
+ velocity_save_context(vptr, &vptr->context);
+ velocity_shutdown(vptr);
+ pci_disable_device(pdev);
+ pci_set_power_state(pdev, pci_choose_state(pdev, state));
+ }
+
+ spin_unlock_irqrestore(&vptr->lock, flags);
+ return 0;
+}
+
+/**
+ * velocity_restore_context - restore registers
+ * @vptr: velocity
+ * @context: buffer for stored context
+ *
+ * Reload the register configuration from the velocity context
+ * created by velocity_save_context.
+ */
+static void velocity_restore_context(struct velocity_info *vptr, struct velocity_context *context)
+{
+ struct mac_regs __iomem *regs = vptr->mac_regs;
+ int i;
+ u8 __iomem *ptr = (u8 __iomem *)regs;
+
+ for (i = MAC_REG_PAR; i < MAC_REG_CR0_SET; i += 4)
+ writel(*((u32 *) (context->mac_reg + i)), ptr + i);
+
+ /* Just skip cr0 */
+ for (i = MAC_REG_CR1_SET; i < MAC_REG_CR0_CLR; i++) {
+ /* Clear */
+ writeb(~(*((u8 *) (context->mac_reg + i))), ptr + i + 4);
+ /* Set */
+ writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
+ }
+
+ for (i = MAC_REG_MAR; i < MAC_REG_IMR; i += 4)
+ writel(*((u32 *) (context->mac_reg + i)), ptr + i);
+
+ for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
+ writel(*((u32 *) (context->mac_reg + i)), ptr + i);
+
+ for (i = MAC_REG_TDCSR_SET; i <= MAC_REG_RDCSR_SET; i++)
+ writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
+}
+
+static int velocity_resume(struct pci_dev *pdev)
+{
+ struct net_device *dev = pci_get_drvdata(pdev);
+ struct velocity_info *vptr = netdev_priv(dev);
+ unsigned long flags;
+ int i;
+
+ if (!netif_running(vptr->dev))
+ return 0;
+
+ pci_set_power_state(pdev, PCI_D0);
+ pci_enable_wake(pdev, 0, 0);
+ pci_restore_state(pdev);
+
+ mac_wol_reset(vptr->mac_regs);
+
+ spin_lock_irqsave(&vptr->lock, flags);
+ velocity_restore_context(vptr, &vptr->context);
+ velocity_init_registers(vptr, VELOCITY_INIT_WOL);
+ mac_disable_int(vptr->mac_regs);
+
+ velocity_tx_srv(vptr);
+
+ for (i = 0; i < vptr->tx.numq; i++) {
+ if (vptr->tx.used[i])
+ mac_tx_queue_wake(vptr->mac_regs, i);
+ }
+
+ mac_enable_int(vptr->mac_regs);
+ spin_unlock_irqrestore(&vptr->lock, flags);
+ netif_device_attach(vptr->dev);
+
+ return 0;
+}
+#endif
+
+/*
+ * Definition for our device driver. The PCI layer interface
+ * uses this to handle all our card discover and plugging
+ */
+static struct pci_driver velocity_driver = {
+ .name = VELOCITY_NAME,
+ .id_table = velocity_id_table,
+ .probe = velocity_found1,
+ .remove = __devexit_p(velocity_remove1),
+#ifdef CONFIG_PM
+ .suspend = velocity_suspend,
+ .resume = velocity_resume,
+#endif
+};
+
+
+/**
+ * velocity_ethtool_up - pre hook for ethtool
+ * @dev: network device
+ *
+ * Called before an ethtool operation. We need to make sure the
+ * chip is out of D3 state before we poke at it.
+ */
+static int velocity_ethtool_up(struct net_device *dev)
+{
+ struct velocity_info *vptr = netdev_priv(dev);
+ if (!netif_running(dev))
+ pci_set_power_state(vptr->pdev, PCI_D0);
+ return 0;
+}
+
+/**
+ * velocity_ethtool_down - post hook for ethtool
+ * @dev: network device
+ *
+ * Called after an ethtool operation. Restore the chip back to D3
+ * state if it isn't running.
+ */
+static void velocity_ethtool_down(struct net_device *dev)
+{
+ struct velocity_info *vptr = netdev_priv(dev);
+ if (!netif_running(dev))
+ pci_set_power_state(vptr->pdev, PCI_D3hot);
+}
+
+static int velocity_get_settings(struct net_device *dev,
+ struct ethtool_cmd *cmd)
+{
+ struct velocity_info *vptr = netdev_priv(dev);
+ struct mac_regs __iomem *regs = vptr->mac_regs;
+ u32 status;
+ status = check_connection_type(vptr->mac_regs);
+
+ cmd->supported = SUPPORTED_TP |
+ SUPPORTED_Autoneg |
+ SUPPORTED_10baseT_Half |
+ SUPPORTED_10baseT_Full |
+ SUPPORTED_100baseT_Half |
+ SUPPORTED_100baseT_Full |
+ SUPPORTED_1000baseT_Half |
+ SUPPORTED_1000baseT_Full;
+
+ cmd->advertising = ADVERTISED_TP | ADVERTISED_Autoneg;
+ if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
+ cmd->advertising |=
+ ADVERTISED_10baseT_Half |
+ ADVERTISED_10baseT_Full |
+ ADVERTISED_100baseT_Half |
+ ADVERTISED_100baseT_Full |
+ ADVERTISED_1000baseT_Half |
+ ADVERTISED_1000baseT_Full;
+ } else {
+ switch (vptr->options.spd_dpx) {
+ case SPD_DPX_1000_FULL:
+ cmd->advertising |= ADVERTISED_1000baseT_Full;
+ break;
+ case SPD_DPX_100_HALF:
+ cmd->advertising |= ADVERTISED_100baseT_Half;
+ break;
+ case SPD_DPX_100_FULL:
+ cmd->advertising |= ADVERTISED_100baseT_Full;
+ break;
+ case SPD_DPX_10_HALF:
+ cmd->advertising |= ADVERTISED_10baseT_Half;
+ break;
+ case SPD_DPX_10_FULL:
+ cmd->advertising |= ADVERTISED_10baseT_Full;
+ break;
+ default:
+ break;
+ }
+ }
+
+ if (status & VELOCITY_SPEED_1000)
+ ethtool_cmd_speed_set(cmd, SPEED_1000);
+ else if (status & VELOCITY_SPEED_100)
+ ethtool_cmd_speed_set(cmd, SPEED_100);
+ else
+ ethtool_cmd_speed_set(cmd, SPEED_10);
+
+ cmd->autoneg = (status & VELOCITY_AUTONEG_ENABLE) ? AUTONEG_ENABLE : AUTONEG_DISABLE;
+ cmd->port = PORT_TP;
+ cmd->transceiver = XCVR_INTERNAL;
+ cmd->phy_address = readb(®s->MIIADR) & 0x1F;
+
+ if (status & VELOCITY_DUPLEX_FULL)
+ cmd->duplex = DUPLEX_FULL;
+ else
+ cmd->duplex = DUPLEX_HALF;
+
+ return 0;
+}
+
+static int velocity_set_settings(struct net_device *dev,
+ struct ethtool_cmd *cmd)
+{
+ struct velocity_info *vptr = netdev_priv(dev);
+ u32 speed = ethtool_cmd_speed(cmd);
+ u32 curr_status;
+ u32 new_status = 0;
+ int ret = 0;
+
+ curr_status = check_connection_type(vptr->mac_regs);
+ curr_status &= (~VELOCITY_LINK_FAIL);
+
+ new_status |= ((cmd->autoneg) ? VELOCITY_AUTONEG_ENABLE : 0);
+ new_status |= ((speed == SPEED_1000) ? VELOCITY_SPEED_1000 : 0);
+ new_status |= ((speed == SPEED_100) ? VELOCITY_SPEED_100 : 0);
+ new_status |= ((speed == SPEED_10) ? VELOCITY_SPEED_10 : 0);
+ new_status |= ((cmd->duplex == DUPLEX_FULL) ? VELOCITY_DUPLEX_FULL : 0);
+
+ if ((new_status & VELOCITY_AUTONEG_ENABLE) &&
+ (new_status != (curr_status | VELOCITY_AUTONEG_ENABLE))) {
+ ret = -EINVAL;
+ } else {
+ enum speed_opt spd_dpx;
+
+ if (new_status & VELOCITY_AUTONEG_ENABLE)
+ spd_dpx = SPD_DPX_AUTO;
+ else if ((new_status & VELOCITY_SPEED_1000) &&
+ (new_status & VELOCITY_DUPLEX_FULL)) {
+ spd_dpx = SPD_DPX_1000_FULL;
+ } else if (new_status & VELOCITY_SPEED_100)
+ spd_dpx = (new_status & VELOCITY_DUPLEX_FULL) ?
+ SPD_DPX_100_FULL : SPD_DPX_100_HALF;
+ else if (new_status & VELOCITY_SPEED_10)
+ spd_dpx = (new_status & VELOCITY_DUPLEX_FULL) ?
+ SPD_DPX_10_FULL : SPD_DPX_10_HALF;
+ else
+ return -EOPNOTSUPP;
+
+ vptr->options.spd_dpx = spd_dpx;
+
+ velocity_set_media_mode(vptr, new_status);
+ }
+
+ return ret;
+}
+
+static void velocity_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
+{
+ struct velocity_info *vptr = netdev_priv(dev);
+ strcpy(info->driver, VELOCITY_NAME);
+ strcpy(info->version, VELOCITY_VERSION);
+ strcpy(info->bus_info, pci_name(vptr->pdev));
+}
+
+static void velocity_ethtool_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
+{
+ struct velocity_info *vptr = netdev_priv(dev);
+ wol->supported = WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP;
+ wol->wolopts |= WAKE_MAGIC;
+ /*
+ if (vptr->wol_opts & VELOCITY_WOL_PHY)
+ wol.wolopts|=WAKE_PHY;
+ */
+ if (vptr->wol_opts & VELOCITY_WOL_UCAST)
+ wol->wolopts |= WAKE_UCAST;
+ if (vptr->wol_opts & VELOCITY_WOL_ARP)
+ wol->wolopts |= WAKE_ARP;
+ memcpy(&wol->sopass, vptr->wol_passwd, 6);
+}
+
+static int velocity_ethtool_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
+{
+ struct velocity_info *vptr = netdev_priv(dev);
+
+ if (!(wol->wolopts & (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP)))
+ return -EFAULT;
+ vptr->wol_opts = VELOCITY_WOL_MAGIC;
+
+ /*
+ if (wol.wolopts & WAKE_PHY) {
+ vptr->wol_opts|=VELOCITY_WOL_PHY;
+ vptr->flags |=VELOCITY_FLAGS_WOL_ENABLED;
+ }
+ */
+
+ if (wol->wolopts & WAKE_MAGIC) {
+ vptr->wol_opts |= VELOCITY_WOL_MAGIC;
+ vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
+ }
+ if (wol->wolopts & WAKE_UCAST) {
+ vptr->wol_opts |= VELOCITY_WOL_UCAST;
+ vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
+ }
+ if (wol->wolopts & WAKE_ARP) {
+ vptr->wol_opts |= VELOCITY_WOL_ARP;
+ vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
+ }
+ memcpy(vptr->wol_passwd, wol->sopass, 6);
+ return 0;
+}
+
+static u32 velocity_get_msglevel(struct net_device *dev)
+{
+ return msglevel;
+}
+
+static void velocity_set_msglevel(struct net_device *dev, u32 value)
+{
+ msglevel = value;
+}
+
+static int get_pending_timer_val(int val)
+{
+ int mult_bits = val >> 6;
+ int mult = 1;
+
+ switch (mult_bits)
+ {
+ case 1:
+ mult = 4; break;
+ case 2:
+ mult = 16; break;
+ case 3:
+ mult = 64; break;
+ case 0:
+ default:
+ break;
+ }
+
+ return (val & 0x3f) * mult;
+}
+
+static void set_pending_timer_val(int *val, u32 us)
+{
+ u8 mult = 0;
+ u8 shift = 0;
+
+ if (us >= 0x3f) {
+ mult = 1; /* mult with 4 */
+ shift = 2;
+ }
+ if (us >= 0x3f * 4) {
+ mult = 2; /* mult with 16 */
+ shift = 4;
+ }
+ if (us >= 0x3f * 16) {
+ mult = 3; /* mult with 64 */
+ shift = 6;
+ }
+
+ *val = (mult << 6) | ((us >> shift) & 0x3f);
+}
+
+
+static int velocity_get_coalesce(struct net_device *dev,
+ struct ethtool_coalesce *ecmd)
+{
+ struct velocity_info *vptr = netdev_priv(dev);
+
+ ecmd->tx_max_coalesced_frames = vptr->options.tx_intsup;
+ ecmd->rx_max_coalesced_frames = vptr->options.rx_intsup;
+
+ ecmd->rx_coalesce_usecs = get_pending_timer_val(vptr->options.rxqueue_timer);
+ ecmd->tx_coalesce_usecs = get_pending_timer_val(vptr->options.txqueue_timer);
+
+ return 0;
+}
+
+static int velocity_set_coalesce(struct net_device *dev,
+ struct ethtool_coalesce *ecmd)
+{
+ struct velocity_info *vptr = netdev_priv(dev);
+ int max_us = 0x3f * 64;
+ unsigned long flags;
+
+ /* 6 bits of */
+ if (ecmd->tx_coalesce_usecs > max_us)
+ return -EINVAL;
+ if (ecmd->rx_coalesce_usecs > max_us)
+ return -EINVAL;
+
+ if (ecmd->tx_max_coalesced_frames > 0xff)
+ return -EINVAL;
+ if (ecmd->rx_max_coalesced_frames > 0xff)
+ return -EINVAL;
+
+ vptr->options.rx_intsup = ecmd->rx_max_coalesced_frames;
+ vptr->options.tx_intsup = ecmd->tx_max_coalesced_frames;
+
+ set_pending_timer_val(&vptr->options.rxqueue_timer,
+ ecmd->rx_coalesce_usecs);
+ set_pending_timer_val(&vptr->options.txqueue_timer,
+ ecmd->tx_coalesce_usecs);
+
+ /* Setup the interrupt suppression and queue timers */
+ spin_lock_irqsave(&vptr->lock, flags);
+ mac_disable_int(vptr->mac_regs);
+ setup_adaptive_interrupts(vptr);
+ setup_queue_timers(vptr);
+
+ mac_write_int_mask(vptr->int_mask, vptr->mac_regs);
+ mac_clear_isr(vptr->mac_regs);
+ mac_enable_int(vptr->mac_regs);
+ spin_unlock_irqrestore(&vptr->lock, flags);
+
+ return 0;
+}
+
+static const char velocity_gstrings[][ETH_GSTRING_LEN] = {
+ "rx_all",
+ "rx_ok",
+ "tx_ok",
+ "rx_error",
+ "rx_runt_ok",
+ "rx_runt_err",
+ "rx_64",
+ "tx_64",
+ "rx_65_to_127",
+ "tx_65_to_127",
+ "rx_128_to_255",
+ "tx_128_to_255",
+ "rx_256_to_511",
+ "tx_256_to_511",
+ "rx_512_to_1023",
+ "tx_512_to_1023",
+ "rx_1024_to_1518",
+ "tx_1024_to_1518",
+ "tx_ether_collisions",
+ "rx_crc_errors",
+ "rx_jumbo",
+ "tx_jumbo",
+ "rx_mac_control_frames",
+ "tx_mac_control_frames",
+ "rx_frame_alignement_errors",
+ "rx_long_ok",
+ "rx_long_err",
+ "tx_sqe_errors",
+ "rx_no_buf",
+ "rx_symbol_errors",
+ "in_range_length_errors",
+ "late_collisions"
+};
+
+static void velocity_get_strings(struct net_device *dev, u32 sset, u8 *data)
+{
+ switch (sset) {
+ case ETH_SS_STATS:
+ memcpy(data, *velocity_gstrings, sizeof(velocity_gstrings));
+ break;
+ }
+}
+
+static int velocity_get_sset_count(struct net_device *dev, int sset)
+{
+ switch (sset) {
+ case ETH_SS_STATS:
+ return ARRAY_SIZE(velocity_gstrings);
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static void velocity_get_ethtool_stats(struct net_device *dev,
+ struct ethtool_stats *stats, u64 *data)
+{
+ if (netif_running(dev)) {
+ struct velocity_info *vptr = netdev_priv(dev);
+ u32 *p = vptr->mib_counter;
+ int i;
+
+ spin_lock_irq(&vptr->lock);
+ velocity_update_hw_mibs(vptr);
+ spin_unlock_irq(&vptr->lock);
+
+ for (i = 0; i < ARRAY_SIZE(velocity_gstrings); i++)
+ *data++ = *p++;
+ }
+}
+
+static const struct ethtool_ops velocity_ethtool_ops = {
+ .get_settings = velocity_get_settings,
+ .set_settings = velocity_set_settings,
+ .get_drvinfo = velocity_get_drvinfo,
+ .get_wol = velocity_ethtool_get_wol,
+ .set_wol = velocity_ethtool_set_wol,
+ .get_msglevel = velocity_get_msglevel,
+ .set_msglevel = velocity_set_msglevel,
+ .get_link = velocity_get_link,
+ .get_strings = velocity_get_strings,
+ .get_sset_count = velocity_get_sset_count,
+ .get_ethtool_stats = velocity_get_ethtool_stats,
+ .get_coalesce = velocity_get_coalesce,
+ .set_coalesce = velocity_set_coalesce,
+ .begin = velocity_ethtool_up,
+ .complete = velocity_ethtool_down
+};
+
+#if defined(CONFIG_PM) && defined(CONFIG_INET)
+static int velocity_netdev_event(struct notifier_block *nb, unsigned long notification, void *ptr)
+{
+ struct in_ifaddr *ifa = ptr;
+ struct net_device *dev = ifa->ifa_dev->dev;
+
+ if (dev_net(dev) == &init_net &&
+ dev->netdev_ops == &velocity_netdev_ops)
+ velocity_get_ip(netdev_priv(dev));
+
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block velocity_inetaddr_notifier = {
+ .notifier_call = velocity_netdev_event,
+};
+
+static void velocity_register_notifier(void)
+{
+ register_inetaddr_notifier(&velocity_inetaddr_notifier);
+}
+
+static void velocity_unregister_notifier(void)
+{
+ unregister_inetaddr_notifier(&velocity_inetaddr_notifier);
+}
+
+#else
+
+#define velocity_register_notifier() do {} while (0)
+#define velocity_unregister_notifier() do {} while (0)
+
+#endif /* defined(CONFIG_PM) && defined(CONFIG_INET) */
+
+/**
+ * velocity_init_module - load time function
+ *
+ * Called when the velocity module is loaded. The PCI driver
+ * is registered with the PCI layer, and in turn will call
+ * the probe functions for each velocity adapter installed
+ * in the system.
+ */
+static int __init velocity_init_module(void)
+{
+ int ret;
+
+ velocity_register_notifier();
+ ret = pci_register_driver(&velocity_driver);
+ if (ret < 0)
+ velocity_unregister_notifier();
+ return ret;
+}
+
+/**
+ * velocity_cleanup - module unload
+ *
+ * When the velocity hardware is unloaded this function is called.
+ * It will clean up the notifiers and the unregister the PCI
+ * driver interface for this hardware. This in turn cleans up
+ * all discovered interfaces before returning from the function
+ */
+static void __exit velocity_cleanup_module(void)
+{
+ velocity_unregister_notifier();
+ pci_unregister_driver(&velocity_driver);
+}
+
+module_init(velocity_init_module);
+module_exit(velocity_cleanup_module);
projects / linux-edison.git / commitdiff