Merge branch 'pm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Tue, 25 Oct 2011 13:18:39 +0000 (15:18 +0200)]
* 'pm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (63 commits)
  PM / Clocks: Remove redundant NULL checks before kfree()
  PM / Documentation: Update docs about suspend and CPU hotplug
  ACPI / PM: Add Sony VGN-FW21E to nonvs blacklist.
  ARM: mach-shmobile: sh7372 A4R support (v4)
  ARM: mach-shmobile: sh7372 A3SP support (v4)
  PM / Sleep: Mark devices involved in wakeup signaling during suspend
  PM / Hibernate: Improve performance of LZO/plain hibernation, checksum image
  PM / Hibernate: Do not initialize static and extern variables to 0
  PM / Freezer: Make fake_signal_wake_up() wake TASK_KILLABLE tasks too
  PM / Hibernate: Add resumedelay kernel param in addition to resumewait
  MAINTAINERS: Update linux-pm list address
  PM / ACPI: Blacklist Vaio VGN-FW520F machine known to require acpi_sleep=nonvs
  PM / ACPI: Blacklist Sony Vaio known to require acpi_sleep=nonvs
  PM / Hibernate: Add resumewait param to support MMC-like devices as resume file
  PM / Hibernate: Fix typo in a kerneldoc comment
  PM / Hibernate: Freeze kernel threads after preallocating memory
  PM: Update the policy on default wakeup settings
  PM / VT: Cleanup #if defined uglyness and fix compile error
  PM / Suspend: Off by one in pm_suspend()
  PM / Hibernate: Include storage keys in hibernation image on s390
  ...

22 files changed:
1  2 
Documentation/kernel-parameters.txt
Documentation/power/basic-pm-debugging.txt
Documentation/usb/power-management.txt
MAINTAINERS
arch/arm/mach-shmobile/board-mackerel.c
drivers/Kconfig
drivers/Makefile
drivers/bluetooth/btusb.c
drivers/hid/usbhid/hid-core.c
drivers/net/ethernet/intel/e1000e/netdev.c
drivers/net/usb/usbnet.c
drivers/tty/Kconfig
drivers/usb/class/cdc-acm.c
drivers/usb/class/cdc-wdm.c
drivers/usb/core/driver.c
drivers/usb/core/hcd.c
drivers/usb/core/hub.c
include/linux/device.h
include/linux/netdevice.h
net/mac80211/main.c
net/mac80211/mlme.c
net/mac80211/scan.c

Simple merge
diff --cc MAINTAINERS
Simple merge
diff --cc drivers/Kconfig
Simple merge
Simple merge
Simple merge
Simple merge
index 6803127,0000000..a855db1
mode 100644,000000..100644
--- /dev/null
@@@ -1,6440 -1,0 +1,6440 @@@
 +/*******************************************************************************
 +
 +  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_qos.h>
 +#include <linux/pm_runtime.h>
 +#include <linux/aer.h>
 +#include <linux/prefetch.h>
 +
 +#include "e1000.h"
 +
 +#define DRV_EXTRAVERSION "-k"
 +
 +#define DRV_VERSION "1.5.1" 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;
 +      union e1000_rx_desc_extended *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:
 +              /* Extended Receive Descriptor (Read) Format
 +               *
 +               *   +-----------------------------------------------------+
 +               * 0 |                Buffer Address [63:0]                |
 +               *   +-----------------------------------------------------+
 +               * 8 |                      Reserved                       |
 +               *   +-----------------------------------------------------+
 +               */
 +              printk(KERN_INFO "R  [desc]      [buf addr 63:0 ] "
 +                     "[reserved 63:0 ] [bi->dma       ] "
 +                     "[bi->skb] <-- Ext (Read) format\n");
 +              /* Extended Receive Descriptor (Write-Back) Format
 +               *
 +               *   63       48 47    32 31    24 23            4 3        0
 +               *   +------------------------------------------------------+
 +               *   |     RSS Hash      |        |               |         |
 +               * 0 +-------------------+  Rsvd  |   Reserved    | MRQ RSS |
 +               *   | Packet   | IP     |        |               |  Type   |
 +               *   | Checksum | Ident  |        |               |         |
 +               *   +------------------------------------------------------+
 +               * 8 | VLAN Tag | Length | Extended Error | Extended Status |
 +               *   +------------------------------------------------------+
 +               *   63       48 47    32 31            20 19               0
 +               */
 +              printk(KERN_INFO "RWB[desc]      [cs ipid    mrq] "
 +                     "[vt   ln xe  xs] "
 +                     "[bi->skb] <-- Ext (Write-Back) format\n");
 +
 +              for (i = 0; i < rx_ring->count; i++) {
 +                      buffer_info = &rx_ring->buffer_info[i];
 +                      rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
 +                      u1 = (struct my_u1 *)rx_desc;
 +                      staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
 +                      if (staterr & E1000_RXD_STAT_DD) {
 +                              /* Descriptor Done */
 +                              printk(KERN_INFO "RWB[0x%03X]     %016llX "
 +                                     "%016llX ---------------- %p", i,
 +                                     (unsigned long long)le64_to_cpu(u1->a),
 +                                     (unsigned long long)le64_to_cpu(u1->b),
 +                                     buffer_info->skb);
 +                      } else {
 +                              printk(KERN_INFO "R  [0x%03X]     %016llX "
 +                                     "%016llX %016llX %p", i,
 +                                     (unsigned long long)le64_to_cpu(u1->a),
 +                                     (unsigned long long)le64_to_cpu(u1->b),
 +                                     (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_buffer_len,
 +                                                     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");
 +              }
 +      }
 +
 +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
 + * @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;
 +      union e1000_rx_desc_extended *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_EXT(*rx_ring, i);
 +              rx_desc->read.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();
 +                      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();
 +                      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;
 +      union e1000_rx_desc_extended *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_EXT(*rx_ring, i);
 +              rx_desc->read.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();
 +              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;
 +      union e1000_rx_desc_extended *rx_desc, *next_rxd;
 +      struct e1000_buffer *buffer_info, *next_buffer;
 +      u32 length, staterr;
 +      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_EXT(*rx_ring, i);
 +      staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
 +      buffer_info = &rx_ring->buffer_info[i];
 +
 +      while (staterr & E1000_RXD_STAT_DD) {
 +              struct sk_buff *skb;
 +
 +              if (*work_done >= work_to_do)
 +                      break;
 +              (*work_done)++;
 +              rmb();  /* read descriptor and rx_buffer_info after status DD */
 +
 +              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_EXT(*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->wb.upper.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(!(staterr & 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 (staterr & E1000_RXD_STAT_EOP)
 +                              adapter->flags2 &= ~FLAG2_IS_DISCARDING;
 +                      goto next_desc;
 +              }
 +
 +              if (staterr & E1000_RXDEXT_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, staterr,
 +                                le16_to_cpu(rx_desc->wb.lower.hi_dword.
 +                                            csum_ip.csum), skb);
 +
 +              e1000_receive_skb(adapter, netdev, skb, staterr,
 +                                rx_desc->wb.upper.vlan);
 +
 +next_desc:
 +              rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF);
 +
 +              /* 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.upper.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;
 +}
 +
 +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 += PAGE_SIZE;
 +              }
 +
 +              /* 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 += PAGE_SIZE;
 +}
 +
 +/**
 + * 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;
 +      union e1000_rx_desc_extended *rx_desc, *next_rxd;
 +      struct e1000_buffer *buffer_info, *next_buffer;
 +      u32 length, staterr;
 +      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_EXT(*rx_ring, i);
 +      staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
 +      buffer_info = &rx_ring->buffer_info[i];
 +
 +      while (staterr & E1000_RXD_STAT_DD) {
 +              struct sk_buff *skb;
 +
 +              if (*work_done >= work_to_do)
 +                      break;
 +              (*work_done)++;
 +              rmb();  /* read descriptor and rx_buffer_info after status DD */
 +
 +              skb = buffer_info->skb;
 +              buffer_info->skb = NULL;
 +
 +              ++i;
 +              if (i == rx_ring->count)
 +                      i = 0;
 +              next_rxd = E1000_RX_DESC_EXT(*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->wb.upper.length);
 +
 +              /* errors is only valid for DD + EOP descriptors */
 +              if (unlikely((staterr & E1000_RXD_STAT_EOP) &&
 +                           (staterr & E1000_RXDEXT_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 (!(staterr & 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, staterr,
 +                                le16_to_cpu(rx_desc->wb.lower.hi_dword.
 +                                            csum_ip.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, staterr,
 +                                rx_desc->wb.upper.vlan);
 +
 +next_desc:
 +              rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF);
 +
 +              /* 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;
 +
 +              staterr = le32_to_cpu(rx_desc->wb.upper.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_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;
 +      }
 +
 +      /* Enable Extended Status in all Receive Descriptors */
 +      rfctl = er32(RFCTL);
 +      rfctl |= E1000_RFCTL_EXTEN;
 +
 +      /*
 +       * 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;
 +
 +              /*
 +               * 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);
 +
 +              /* 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(RFCTL, rfctl);
 +      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(union e1000_rx_desc_extended);
 +              adapter->clean_rx = e1000_clean_jumbo_rx_irq;
 +              adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers;
 +      } else {
 +              rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended);
 +              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);
 +      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->netdev->features & NETIF_F_RXCSUM) {
 +              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);
 +      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++) {
 +              const struct skb_frag_struct *frag;
 +
 +              frag = &skb_shinfo(skb)->frags[f];
 +              len = skb_frag_size(frag);
 +              offset = 0;
 +
 +              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 = skb_frag_dma_map(&pdev->dev, frag,
 +                                              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_frag_size(&skb_shinfo(skb)->frags[f]),
 +                                     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, &reg16);
 +      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, &reg16);
 +      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 int e1000_set_features(struct net_device *netdev, u32 features)
 +{
 +      struct e1000_adapter *adapter = netdev_priv(netdev);
 +      u32 changed = features ^ netdev->features;
 +
 +      if (changed & (NETIF_F_TSO | NETIF_F_TSO6))
 +              adapter->flags |= FLAG_TSO_FORCE;
 +
 +      if (!(changed & (NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX |
 +                       NETIF_F_RXCSUM)))
 +              return 0;
 +
 +      if (netif_running(netdev))
 +              e1000e_reinit_locked(adapter);
 +      else
 +              e1000e_reset(adapter);
 +
 +      return 0;
 +}
 +
 +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
 +      .ndo_set_features = e1000_set_features,
 +};
 +
 +/**
 + * 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");
 +
 +      /* Set initial default active device features */
 +      netdev->features = (NETIF_F_SG |
 +                          NETIF_F_HW_VLAN_RX |
 +                          NETIF_F_HW_VLAN_TX |
 +                          NETIF_F_TSO |
 +                          NETIF_F_TSO6 |
 +                          NETIF_F_RXCSUM |
 +                          NETIF_F_HW_CSUM);
 +
 +      /* Set user-changeable features (subset of all device features) */
 +      netdev->hw_features = netdev->features;
 +
 +      if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER)
 +              netdev->features |= NETIF_F_HW_VLAN_FILTER;
 +
 +      netdev->vlan_features |= (NETIF_F_SG |
 +                                NETIF_F_TSO |
 +                                NETIF_F_TSO6 |
 +                                NETIF_F_HW_CSUM);
 +
 +      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 */
Simple merge
@@@ -60,9 -60,13 +60,13 @@@ config VT_CONSOL
  
          If unsure, say Y.
  
+ config VT_CONSOLE_SLEEP
+       def_bool y
+       depends on VT_CONSOLE && PM_SLEEP
  config HW_CONSOLE
        bool
 -      depends on VT && !S390 && !UML
 +      depends on VT && !UML
        default y
  
  config VT_HW_CONSOLE_BINDING
Simple merge
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