drivers/net/e1000e/netdev.c

   1 /*******************************************************************************
   2
   3   Intel PRO/1000 Linux driver
   4   Copyright(c) 1999 - 2007 Intel Corporation.
   5
   6   This program is free software; you can redistribute it and/or modify it
   7   under the terms and conditions of the GNU General Public License,
   8   version 2, as published by the Free Software Foundation.
   9
  10   This program is distributed in the hope it will be useful, but WITHOUT
  11   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13   more details.
  14
  15   You should have received a copy of the GNU General Public License along with
  16   this program; if not, write to the Free Software Foundation, Inc.,
  17   51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  18
  19   The full GNU General Public License is included in this distribution in
  20   the file called "COPYING".
  21
  22   Contact Information:
  23   Linux NICS <linux.nics@intel.com>
  24   e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  25   Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  26
  27 *******************************************************************************/
  28
  29 #include <linux/module.h>
  30 #include <linux/types.h>
  31 #include <linux/init.h>
  32 #include <linux/pci.h>
  33 #include <linux/vmalloc.h>
  34 #include <linux/pagemap.h>
  35 #include <linux/delay.h>
  36 #include <linux/netdevice.h>
  37 #include <linux/tcp.h>
  38 #include <linux/ipv6.h>
  39 #include <net/checksum.h>
  40 #include <net/ip6_checksum.h>
  41 #include <linux/mii.h>
  42 #include <linux/ethtool.h>
  43 #include <linux/if_vlan.h>
  44 #include <linux/cpu.h>
  45 #include <linux/smp.h>
  46
  47 #include "e1000.h"
  48
  49 #define DRV_VERSION "0.2.0"
  50 char e1000e_driver_name[] = "e1000e";
  51 const char e1000e_driver_version[] = DRV_VERSION;
  52
  53 static const struct e1000_info *e1000_info_tbl[] = {
  54         [board_82571]           = &e1000_82571_info,
  55         [board_82572]           = &e1000_82572_info,
  56         [board_82573]           = &e1000_82573_info,
  57         [board_80003es2lan]     = &e1000_es2_info,
  58         [board_ich8lan]         = &e1000_ich8_info,
  59         [board_ich9lan]         = &e1000_ich9_info,
  60 };
  61
  62 #ifdef DEBUG
  63 /**
  64  * e1000_get_hw_dev_name - return device name string
  65  * used by hardware layer to print debugging information
  66  **/
  67 char *e1000e_get_hw_dev_name(struct e1000_hw *hw)
  68 {
  69         return hw->adapter->netdev->name;
  70 }
  71 #endif
  72
  73 /**
  74  * e1000_desc_unused - calculate if we have unused descriptors
  75  **/
  76 static int e1000_desc_unused(struct e1000_ring *ring)
  77 {
  78         if (ring->next_to_clean > ring->next_to_use)
  79                 return ring->next_to_clean - ring->next_to_use - 1;
  80
  81         return ring->count + ring->next_to_clean - ring->next_to_use - 1;
  82 }
  83
  84 /**
  85  * e1000_receive_skb - helper function to handle rx indications
  86  * @adapter: board private structure
  87  * @status: descriptor status field as written by hardware
  88  * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
  89  * @skb: pointer to sk_buff to be indicated to stack
  90  **/
  91 static void e1000_receive_skb(struct e1000_adapter *adapter,
  92                               struct net_device *netdev,
  93                               struct sk_buff *skb,
  94                               u8 status, __le16 vlan)
  95 {
  96         skb->protocol = eth_type_trans(skb, netdev);
  97
  98         if (adapter->vlgrp && (status & E1000_RXD_STAT_VP))
  99                 vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
 100                                          le16_to_cpu(vlan) &
 101                                          E1000_RXD_SPC_VLAN_MASK);
 102         else
 103                 netif_receive_skb(skb);
 104
 105         netdev->last_rx = jiffies;
 106 }
 107
 108 /**
 109  * e1000_rx_checksum - Receive Checksum Offload for 82543
 110  * @adapter:     board private structure
 111  * @status_err:  receive descriptor status and error fields
 112  * @csum:       receive descriptor csum field
 113  * @sk_buff:     socket buffer with received data
 114  **/
 115 static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err,
 116                               u32 csum, struct sk_buff *skb)
 117 {
 118         u16 status = (u16)status_err;
 119         u8 errors = (u8)(status_err >> 24);
 120         skb->ip_summed = CHECKSUM_NONE;
 121
 122         /* Ignore Checksum bit is set */
 123         if (status & E1000_RXD_STAT_IXSM)
 124                 return;
 125         /* TCP/UDP checksum error bit is set */
 126         if (errors & E1000_RXD_ERR_TCPE) {
 127                 /* let the stack verify checksum errors */
 128                 adapter->hw_csum_err++;
 129                 return;
 130         }
 131
 132         /* TCP/UDP Checksum has not been calculated */
 133         if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)))
 134                 return;
 135
 136         /* It must be a TCP or UDP packet with a valid checksum */
 137         if (status & E1000_RXD_STAT_TCPCS) {
 138                 /* TCP checksum is good */
 139                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 140         } else {
 141                 /* IP fragment with UDP payload */
 142                 /* Hardware complements the payload checksum, so we undo it
 143                  * and then put the value in host order for further stack use.
 144                  */
 145                 __sum16 sum = (__force __sum16)htons(csum);
 146                 skb->csum = csum_unfold(~sum);
 147                 skb->ip_summed = CHECKSUM_COMPLETE;
 148         }
 149         adapter->hw_csum_good++;
 150 }
 151
 152 /**
 153  * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
 154  * @adapter: address of board private structure
 155  **/
 156 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
 157                                    int cleaned_count)
 158 {
 159         struct net_device *netdev = adapter->netdev;
 160         struct pci_dev *pdev = adapter->pdev;
 161         struct e1000_ring *rx_ring = adapter->rx_ring;
 162         struct e1000_rx_desc *rx_desc;
 163         struct e1000_buffer *buffer_info;
 164         struct sk_buff *skb;
 165         unsigned int i;
 166         unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN;
 167
 168         i = rx_ring->next_to_use;
 169         buffer_info = &rx_ring->buffer_info[i];
 170
 171         while (cleaned_count--) {
 172                 skb = buffer_info->skb;
 173                 if (skb) {
 174                         skb_trim(skb, 0);
 175                         goto map_skb;
 176                 }
 177
 178                 skb = netdev_alloc_skb(netdev, bufsz);
 179                 if (!skb) {
 180                         /* Better luck next round */
 181                         adapter->alloc_rx_buff_failed++;
 182                         break;
 183                 }
 184
 185                 /* Make buffer alignment 2 beyond a 16 byte boundary
 186                  * this will result in a 16 byte aligned IP header after
 187                  * the 14 byte MAC header is removed
 188                  */
 189                 skb_reserve(skb, NET_IP_ALIGN);
 190
 191                 buffer_info->skb = skb;
 192 map_skb:
 193                 buffer_info->dma = pci_map_single(pdev, skb->data,
 194                                                   adapter->rx_buffer_len,
 195                                                   PCI_DMA_FROMDEVICE);
 196                 if (pci_dma_mapping_error(buffer_info->dma)) {
 197                         dev_err(&pdev->dev, "RX DMA map failed\n");
 198                         adapter->rx_dma_failed++;
 199                         break;
 200                 }
 201
 202                 rx_desc = E1000_RX_DESC(*rx_ring, i);
 203                 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
 204
 205                 i++;
 206                 if (i == rx_ring->count)
 207                         i = 0;
 208                 buffer_info = &rx_ring->buffer_info[i];
 209         }
 210
 211         if (rx_ring->next_to_use != i) {
 212                 rx_ring->next_to_use = i;
 213                 if (i-- == 0)
 214                         i = (rx_ring->count - 1);
 215
 216                 /* Force memory writes to complete before letting h/w
 217                  * know there are new descriptors to fetch.  (Only
 218                  * applicable for weak-ordered memory model archs,
 219                  * such as IA-64). */
 220                 wmb();
 221                 writel(i, adapter->hw.hw_addr + rx_ring->tail);
 222         }
 223 }
 224
 225 /**
 226  * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
 227  * @adapter: address of board private structure
 228  **/
 229 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter,
 230                                       int cleaned_count)
 231 {
 232         struct net_device *netdev = adapter->netdev;
 233         struct pci_dev *pdev = adapter->pdev;
 234         union e1000_rx_desc_packet_split *rx_desc;
 235         struct e1000_ring *rx_ring = adapter->rx_ring;
 236         struct e1000_buffer *buffer_info;
 237         struct e1000_ps_page *ps_page;
 238         struct sk_buff *skb;
 239         unsigned int i, j;
 240
 241         i = rx_ring->next_to_use;
 242         buffer_info = &rx_ring->buffer_info[i];
 243
 244         while (cleaned_count--) {
 245                 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
 246
 247                 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
 248                         ps_page = &buffer_info->ps_pages[j];
 249                         if (j >= adapter->rx_ps_pages) {
 250                                 /* all unused desc entries get hw null ptr */
 251                                 rx_desc->read.buffer_addr[j+1] = ~cpu_to_le64(0);
 252                                 continue;
 253                         }
 254                         if (!ps_page->page) {
 255                                 ps_page->page = alloc_page(GFP_ATOMIC);
 256                                 if (!ps_page->page) {
 257                                         adapter->alloc_rx_buff_failed++;
 258                                         goto no_buffers;
 259                                 }
 260                                 ps_page->dma = pci_map_page(pdev,
 261                                                    ps_page->page,
 262                                                    0, PAGE_SIZE,
 263                                                    PCI_DMA_FROMDEVICE);
 264                                 if (pci_dma_mapping_error(ps_page->dma)) {
 265                                         dev_err(&adapter->pdev->dev,
 266                                           "RX DMA page map failed\n");
 267                                         adapter->rx_dma_failed++;
 268                                         goto no_buffers;
 269                                 }
 270                         }
 271                         /*
 272                          * Refresh the desc even if buffer_addrs
 273                          * didn't change because each write-back
 274                          * erases this info.
 275                          */
 276                         rx_desc->read.buffer_addr[j+1] =
 277                              cpu_to_le64(ps_page->dma);
 278                 }
 279
 280                 skb = netdev_alloc_skb(netdev,
 281                                        adapter->rx_ps_bsize0 + NET_IP_ALIGN);
 282
 283                 if (!skb) {
 284                         adapter->alloc_rx_buff_failed++;
 285                         break;
 286                 }
 287
 288                 /* Make buffer alignment 2 beyond a 16 byte boundary
 289                  * this will result in a 16 byte aligned IP header after
 290                  * the 14 byte MAC header is removed
 291                  */
 292                 skb_reserve(skb, NET_IP_ALIGN);
 293
 294                 buffer_info->skb = skb;
 295                 buffer_info->dma = pci_map_single(pdev, skb->data,
 296                                                   adapter->rx_ps_bsize0,
 297                                                   PCI_DMA_FROMDEVICE);
 298                 if (pci_dma_mapping_error(buffer_info->dma)) {
 299                         dev_err(&pdev->dev, "RX DMA map failed\n");
 300                         adapter->rx_dma_failed++;
 301                         /* cleanup skb */
 302                         dev_kfree_skb_any(skb);
 303                         buffer_info->skb = NULL;
 304                         break;
 305                 }
 306
 307                 rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma);
 308
 309                 i++;
 310                 if (i == rx_ring->count)
 311                         i = 0;
 312                 buffer_info = &rx_ring->buffer_info[i];
 313         }
 314
 315 no_buffers:
 316         if (rx_ring->next_to_use != i) {
 317                 rx_ring->next_to_use = i;
 318
 319                 if (!(i--))
 320                         i = (rx_ring->count - 1);
 321
 322                 /* Force memory writes to complete before letting h/w
 323                  * know there are new descriptors to fetch.  (Only
 324                  * applicable for weak-ordered memory model archs,
 325                  * such as IA-64). */
 326                 wmb();
 327                 /* Hardware increments by 16 bytes, but packet split
 328                  * descriptors are 32 bytes...so we increment tail
 329                  * twice as much.
 330                  */
 331                 writel(i<<1, adapter->hw.hw_addr + rx_ring->tail);
 332         }
 333 }
 334
 335 /**
 336  * e1000_clean_rx_irq - Send received data up the network stack; legacy
 337  * @adapter: board private structure
 338  *
 339  * the return value indicates whether actual cleaning was done, there
 340  * is no guarantee that everything was cleaned
 341  **/
 342 static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
 343                                int *work_done, int work_to_do)
 344 {
 345         struct net_device *netdev = adapter->netdev;
 346         struct pci_dev *pdev = adapter->pdev;
 347         struct e1000_ring *rx_ring = adapter->rx_ring;
 348         struct e1000_rx_desc *rx_desc, *next_rxd;
 349         struct e1000_buffer *buffer_info, *next_buffer;
 350         u32 length;
 351         unsigned int i;
 352         int cleaned_count = 0;
 353         bool cleaned = 0;
 354         unsigned int total_rx_bytes = 0, total_rx_packets = 0;
 355
 356         i = rx_ring->next_to_clean;
 357         rx_desc = E1000_RX_DESC(*rx_ring, i);
 358         buffer_info = &rx_ring->buffer_info[i];
 359
 360         while (rx_desc->status & E1000_RXD_STAT_DD) {
 361                 struct sk_buff *skb;
 362                 u8 status;
 363
 364                 if (*work_done >= work_to_do)
 365                         break;
 366                 (*work_done)++;
 367
 368                 status = rx_desc->status;
 369                 skb = buffer_info->skb;
 370                 buffer_info->skb = NULL;
 371
 372                 prefetch(skb->data - NET_IP_ALIGN);
 373
 374                 i++;
 375                 if (i == rx_ring->count)
 376                         i = 0;
 377                 next_rxd = E1000_RX_DESC(*rx_ring, i);
 378                 prefetch(next_rxd);
 379
 380                 next_buffer = &rx_ring->buffer_info[i];
 381
 382                 cleaned = 1;
 383                 cleaned_count++;
 384                 pci_unmap_single(pdev,
 385                                  buffer_info->dma,
 386                                  adapter->rx_buffer_len,
 387                                  PCI_DMA_FROMDEVICE);
 388                 buffer_info->dma = 0;
 389
 390                 length = le16_to_cpu(rx_desc->length);
 391
 392                 /* !EOP means multiple descriptors were used to store a single
 393                  * packet, also make sure the frame isn't just CRC only */
 394                 if (!(status & E1000_RXD_STAT_EOP) || (length <= 4)) {
 395                         /* All receives must fit into a single buffer */
 396                         ndev_dbg(netdev, "%s: Receive packet consumed "
 397                                  "multiple buffers\n", netdev->name);
 398                         /* recycle */
 399                         buffer_info->skb = skb;
 400                         goto next_desc;
 401                 }
 402
 403                 if (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK) {
 404                         /* recycle */
 405                         buffer_info->skb = skb;
 406                         goto next_desc;
 407                 }
 408
 409                 total_rx_bytes += length;
 410                 total_rx_packets++;
 411
 412                 /* code added for copybreak, this should improve
 413                  * performance for small packets with large amounts
 414                  * of reassembly being done in the stack */
 415                 if (length < copybreak) {
 416                         struct sk_buff *new_skb =
 417                             netdev_alloc_skb(netdev, length + NET_IP_ALIGN);
 418                         if (new_skb) {
 419                                 skb_reserve(new_skb, NET_IP_ALIGN);
 420                                 memcpy(new_skb->data - NET_IP_ALIGN,
 421                                        skb->data - NET_IP_ALIGN,
 422                                        length + NET_IP_ALIGN);
 423                                 /* save the skb in buffer_info as good */
 424                                 buffer_info->skb = skb;
 425                                 skb = new_skb;
 426                         }
 427                         /* else just continue with the old one */
 428                 }
 429                 /* end copybreak code */
 430                 skb_put(skb, length);
 431
 432                 /* Receive Checksum Offload */
 433                 e1000_rx_checksum(adapter,
 434                                   (u32)(status) |
 435                                   ((u32)(rx_desc->errors) << 24),
 436                                   le16_to_cpu(rx_desc->csum), skb);
 437
 438                 e1000_receive_skb(adapter, netdev, skb,status,rx_desc->special);
 439
 440 next_desc:
 441                 rx_desc->status = 0;
 442
 443                 /* return some buffers to hardware, one at a time is too slow */
 444                 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
 445                         adapter->alloc_rx_buf(adapter, cleaned_count);
 446                         cleaned_count = 0;
 447                 }
 448
 449                 /* use prefetched values */
 450                 rx_desc = next_rxd;
 451                 buffer_info = next_buffer;
 452         }
 453         rx_ring->next_to_clean = i;
 454
 455         cleaned_count = e1000_desc_unused(rx_ring);
 456         if (cleaned_count)
 457                 adapter->alloc_rx_buf(adapter, cleaned_count);
 458
 459         adapter->total_rx_packets += total_rx_packets;
 460         adapter->total_rx_bytes += total_rx_bytes;
 461         adapter->net_stats.rx_packets += total_rx_packets;
 462         adapter->net_stats.rx_bytes += total_rx_bytes;
 463         return cleaned;
 464 }
 465
 466 static void e1000_put_txbuf(struct e1000_adapter *adapter,
 467                              struct e1000_buffer *buffer_info)
 468 {
 469         if (buffer_info->dma) {
 470                 pci_unmap_page(adapter->pdev, buffer_info->dma,
 471                                buffer_info->length, PCI_DMA_TODEVICE);
 472                 buffer_info->dma = 0;
 473         }
 474         if (buffer_info->skb) {
 475                 dev_kfree_skb_any(buffer_info->skb);
 476                 buffer_info->skb = NULL;
 477         }
 478 }
 479
 480 static void e1000_print_tx_hang(struct e1000_adapter *adapter)
 481 {
 482         struct e1000_ring *tx_ring = adapter->tx_ring;
 483         unsigned int i = tx_ring->next_to_clean;
 484         unsigned int eop = tx_ring->buffer_info[i].next_to_watch;
 485         struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop);
 486         struct net_device *netdev = adapter->netdev;
 487
 488         /* detected Tx unit hang */
 489         ndev_err(netdev,
 490                  "Detected Tx Unit Hang:\n"
 491                  "  TDH                  <%x>\n"
 492                  "  TDT                  <%x>\n"
 493                  "  next_to_use          <%x>\n"
 494                  "  next_to_clean        <%x>\n"
 495                  "buffer_info[next_to_clean]:\n"
 496                  "  time_stamp           <%lx>\n"
 497                  "  next_to_watch        <%x>\n"
 498                  "  jiffies              <%lx>\n"
 499                  "  next_to_watch.status <%x>\n",
 500                  readl(adapter->hw.hw_addr + tx_ring->head),
 501                  readl(adapter->hw.hw_addr + tx_ring->tail),
 502                  tx_ring->next_to_use,
 503                  tx_ring->next_to_clean,
 504                  tx_ring->buffer_info[eop].time_stamp,
 505                  eop,
 506                  jiffies,
 507                  eop_desc->upper.fields.status);
 508 }
 509
 510 /**
 511  * e1000_clean_tx_irq - Reclaim resources after transmit completes
 512  * @adapter: board private structure
 513  *
 514  * the return value indicates whether actual cleaning was done, there
 515  * is no guarantee that everything was cleaned
 516  **/
 517 static bool e1000_clean_tx_irq(struct e1000_adapter *adapter)
 518 {
 519         struct net_device *netdev = adapter->netdev;
 520         struct e1000_hw *hw = &adapter->hw;
 521         struct e1000_ring *tx_ring = adapter->tx_ring;
 522         struct e1000_tx_desc *tx_desc, *eop_desc;
 523         struct e1000_buffer *buffer_info;
 524         unsigned int i, eop;
 525         unsigned int count = 0;
 526         bool cleaned = 0;
 527         unsigned int total_tx_bytes = 0, total_tx_packets = 0;
 528
 529         i = tx_ring->next_to_clean;
 530         eop = tx_ring->buffer_info[i].next_to_watch;
 531         eop_desc = E1000_TX_DESC(*tx_ring, eop);
 532
 533         while (eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) {
 534                 for (cleaned = 0; !cleaned; ) {
 535                         tx_desc = E1000_TX_DESC(*tx_ring, i);
 536                         buffer_info = &tx_ring->buffer_info[i];
 537                         cleaned = (i == eop);
 538
 539                         if (cleaned) {
 540                                 struct sk_buff *skb = buffer_info->skb;
 541                                 unsigned int segs, bytecount;
 542                                 segs = skb_shinfo(skb)->gso_segs ?: 1;
 543                                 /* multiply data chunks by size of headers */
 544                                 bytecount = ((segs - 1) * skb_headlen(skb)) +
 545                                             skb->len;
 546                                 total_tx_packets += segs;
 547                                 total_tx_bytes += bytecount;
 548                         }
 549
 550                         e1000_put_txbuf(adapter, buffer_info);
 551                         tx_desc->upper.data = 0;
 552
 553                         i++;
 554                         if (i == tx_ring->count)
 555                                 i = 0;
 556                 }
 557
 558                 eop = tx_ring->buffer_info[i].next_to_watch;
 559                 eop_desc = E1000_TX_DESC(*tx_ring, eop);
 560 #define E1000_TX_WEIGHT 64
 561                 /* weight of a sort for tx, to avoid endless transmit cleanup */
 562                 if (count++ == E1000_TX_WEIGHT)
 563                         break;
 564         }
 565
 566         tx_ring->next_to_clean = i;
 567
 568 #define TX_WAKE_THRESHOLD 32
 569         if (cleaned && netif_carrier_ok(netdev) &&
 570                      e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) {
 571                 /* Make sure that anybody stopping the queue after this
 572                  * sees the new next_to_clean.
 573                  */
 574                 smp_mb();
 575
 576                 if (netif_queue_stopped(netdev) &&
 577                     !(test_bit(__E1000_DOWN, &adapter->state))) {
 578                         netif_wake_queue(netdev);
 579                         ++adapter->restart_queue;
 580                 }
 581         }
 582
 583         if (adapter->detect_tx_hung) {
 584                 /* Detect a transmit hang in hardware, this serializes the
 585                  * check with the clearing of time_stamp and movement of i */
 586                 adapter->detect_tx_hung = 0;
 587                 if (tx_ring->buffer_info[eop].dma &&
 588                     time_after(jiffies, tx_ring->buffer_info[eop].time_stamp
 589                                + (adapter->tx_timeout_factor * HZ))
 590                     && !(er32(STATUS) &
 591                          E1000_STATUS_TXOFF)) {
 592                         e1000_print_tx_hang(adapter);
 593                         netif_stop_queue(netdev);
 594                 }
 595         }
 596         adapter->total_tx_bytes += total_tx_bytes;
 597         adapter->total_tx_packets += total_tx_packets;
 598         adapter->net_stats.tx_packets += total_tx_packets;
 599         adapter->net_stats.tx_bytes += total_tx_bytes;
 600         return cleaned;
 601 }
 602
 603 /**
 604  * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
 605  * @adapter: board private structure
 606  *
 607  * the return value indicates whether actual cleaning was done, there
 608  * is no guarantee that everything was cleaned
 609  **/
 610 static bool e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
 611                                   int *work_done, int work_to_do)
 612 {
 613         union e1000_rx_desc_packet_split *rx_desc, *next_rxd;
 614         struct net_device *netdev = adapter->netdev;
 615         struct pci_dev *pdev = adapter->pdev;
 616         struct e1000_ring *rx_ring = adapter->rx_ring;
 617         struct e1000_buffer *buffer_info, *next_buffer;
 618         struct e1000_ps_page *ps_page;
 619         struct sk_buff *skb;
 620         unsigned int i, j;
 621         u32 length, staterr;
 622         int cleaned_count = 0;
 623         bool cleaned = 0;
 624         unsigned int total_rx_bytes = 0, total_rx_packets = 0;
 625
 626         i = rx_ring->next_to_clean;
 627         rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
 628         staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
 629         buffer_info = &rx_ring->buffer_info[i];
 630
 631         while (staterr & E1000_RXD_STAT_DD) {
 632                 if (*work_done >= work_to_do)
 633                         break;
 634                 (*work_done)++;
 635                 skb = buffer_info->skb;
 636
 637                 /* in the packet split case this is header only */
 638                 prefetch(skb->data - NET_IP_ALIGN);
 639
 640                 i++;
 641                 if (i == rx_ring->count)
 642                         i = 0;
 643                 next_rxd = E1000_RX_DESC_PS(*rx_ring, i);
 644                 prefetch(next_rxd);
 645
 646                 next_buffer = &rx_ring->buffer_info[i];
 647
 648                 cleaned = 1;
 649                 cleaned_count++;
 650                 pci_unmap_single(pdev, buffer_info->dma,
 651                                  adapter->rx_ps_bsize0,
 652                                  PCI_DMA_FROMDEVICE);
 653                 buffer_info->dma = 0;
 654
 655                 if (!(staterr & E1000_RXD_STAT_EOP)) {
 656                         ndev_dbg(netdev, "%s: Packet Split buffers didn't pick "
 657                                  "up the full packet\n", netdev->name);
 658                         dev_kfree_skb_irq(skb);
 659                         goto next_desc;
 660                 }
 661
 662                 if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) {
 663                         dev_kfree_skb_irq(skb);
 664                         goto next_desc;
 665                 }
 666
 667                 length = le16_to_cpu(rx_desc->wb.middle.length0);
 668
 669                 if (!length) {
 670                         ndev_dbg(netdev, "%s: Last part of the packet spanning"
 671                                  " multiple descriptors\n", netdev->name);
 672                         dev_kfree_skb_irq(skb);
 673                         goto next_desc;
 674                 }
 675
 676                 /* Good Receive */
 677                 skb_put(skb, length);
 678
 679                 {
 680                 /* this looks ugly, but it seems compiler issues make it
 681                    more efficient than reusing j */
 682                 int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]);
 683
 684                 /* page alloc/put takes too long and effects small packet
 685                  * throughput, so unsplit small packets and save the alloc/put*/
 686                 if (l1 && (l1 <= copybreak) &&
 687                     ((length + l1) <= adapter->rx_ps_bsize0)) {
 688                         u8 *vaddr;
 689
 690                         ps_page = &buffer_info->ps_pages[0];
 691
 692                         /* there is no documentation about how to call
 693                          * kmap_atomic, so we can't hold the mapping
 694                          * very long */
 695                         pci_dma_sync_single_for_cpu(pdev, ps_page->dma,
 696                                 PAGE_SIZE, PCI_DMA_FROMDEVICE);
 697                         vaddr = kmap_atomic(ps_page->page, KM_SKB_DATA_SOFTIRQ);
 698                         memcpy(skb_tail_pointer(skb), vaddr, l1);
 699                         kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ);
 700                         pci_dma_sync_single_for_device(pdev, ps_page->dma,
 701                                 PAGE_SIZE, PCI_DMA_FROMDEVICE);
 702
 703                         skb_put(skb, l1);
 704                         goto copydone;
 705                 } /* if */
 706                 }
 707
 708                 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
 709                         length = le16_to_cpu(rx_desc->wb.upper.length[j]);
 710                         if (!length)
 711                                 break;
 712
 713                         ps_page = &buffer_info->ps_pages[j];
 714                         pci_unmap_page(pdev, ps_page->dma, PAGE_SIZE,
 715                                        PCI_DMA_FROMDEVICE);
 716                         ps_page->dma = 0;
 717                         skb_fill_page_desc(skb, j, ps_page->page, 0, length);
 718                         ps_page->page = NULL;
 719                         skb->len += length;
 720                         skb->data_len += length;
 721                         skb->truesize += length;
 722                 }
 723
 724 copydone:
 725                 total_rx_bytes += skb->len;
 726                 total_rx_packets++;
 727
 728                 e1000_rx_checksum(adapter, staterr, le16_to_cpu(
 729                         rx_desc->wb.lower.hi_dword.csum_ip.csum), skb);
 730
 731                 if (rx_desc->wb.upper.header_status &
 732                            cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP))
 733                         adapter->rx_hdr_split++;
 734
 735                 e1000_receive_skb(adapter, netdev, skb,
 736                                   staterr, rx_desc->wb.middle.vlan);
 737
 738 next_desc:
 739                 rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF);
 740                 buffer_info->skb = NULL;
 741
 742                 /* return some buffers to hardware, one at a time is too slow */
 743                 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
 744                         adapter->alloc_rx_buf(adapter, cleaned_count);
 745                         cleaned_count = 0;
 746                 }
 747
 748                 /* use prefetched values */
 749                 rx_desc = next_rxd;
 750                 buffer_info = next_buffer;
 751
 752                 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
 753         }
 754         rx_ring->next_to_clean = i;
 755
 756         cleaned_count = e1000_desc_unused(rx_ring);
 757         if (cleaned_count)
 758                 adapter->alloc_rx_buf(adapter, cleaned_count);
 759
 760         adapter->total_rx_packets += total_rx_packets;
 761         adapter->total_rx_bytes += total_rx_bytes;
 762         adapter->net_stats.rx_packets += total_rx_packets;
 763         adapter->net_stats.rx_bytes += total_rx_bytes;
 764         return cleaned;
 765 }
 766
 767 /**
 768  * e1000_clean_rx_ring - Free Rx Buffers per Queue
 769  * @adapter: board private structure
 770  **/
 771 static void e1000_clean_rx_ring(struct e1000_adapter *adapter)
 772 {
 773         struct e1000_ring *rx_ring = adapter->rx_ring;
 774         struct e1000_buffer *buffer_info;
 775         struct e1000_ps_page *ps_page;
 776         struct pci_dev *pdev = adapter->pdev;
 777         unsigned int i, j;
 778
 779         /* Free all the Rx ring sk_buffs */
 780         for (i = 0; i < rx_ring->count; i++) {
 781                 buffer_info = &rx_ring->buffer_info[i];
 782                 if (buffer_info->dma) {
 783                         if (adapter->clean_rx == e1000_clean_rx_irq)
 784                                 pci_unmap_single(pdev, buffer_info->dma,
 785                                                  adapter->rx_buffer_len,
 786                                                  PCI_DMA_FROMDEVICE);
 787                         else if (adapter->clean_rx == e1000_clean_rx_irq_ps)
 788                                 pci_unmap_single(pdev, buffer_info->dma,
 789                                                  adapter->rx_ps_bsize0,
 790                                                  PCI_DMA_FROMDEVICE);
 791                         buffer_info->dma = 0;
 792                 }
 793
 794                 if (buffer_info->skb) {
 795                         dev_kfree_skb(buffer_info->skb);
 796                         buffer_info->skb = NULL;
 797                 }
 798
 799                 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
 800                         ps_page = &buffer_info->ps_pages[j];
 801                         if (!ps_page->page)
 802                                 break;
 803                         pci_unmap_page(pdev, ps_page->dma, PAGE_SIZE,
 804                                        PCI_DMA_FROMDEVICE);
 805                         ps_page->dma = 0;
 806                         put_page(ps_page->page);
 807                         ps_page->page = NULL;
 808                 }
 809         }
 810
 811         /* there also may be some cached data from a chained receive */
 812         if (rx_ring->rx_skb_top) {
 813                 dev_kfree_skb(rx_ring->rx_skb_top);
 814                 rx_ring->rx_skb_top = NULL;
 815         }
 816
 817         /* Zero out the descriptor ring */
 818         memset(rx_ring->desc, 0, rx_ring->size);
 819
 820         rx_ring->next_to_clean = 0;
 821         rx_ring->next_to_use = 0;
 822
 823         writel(0, adapter->hw.hw_addr + rx_ring->head);
 824         writel(0, adapter->hw.hw_addr + rx_ring->tail);
 825 }
 826
 827 /**
 828  * e1000_intr_msi - Interrupt Handler
 829  * @irq: interrupt number
 830  * @data: pointer to a network interface device structure
 831  **/
 832 static irqreturn_t e1000_intr_msi(int irq, void *data)
 833 {
 834         struct net_device *netdev = data;
 835         struct e1000_adapter *adapter = netdev_priv(netdev);
 836         struct e1000_hw *hw = &adapter->hw;
 837         u32 icr = er32(ICR);
 838
 839         /* read ICR disables interrupts using IAM, so keep up with our
 840          * enable/disable accounting */
 841         atomic_inc(&adapter->irq_sem);
 842
 843         if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
 844                 hw->mac.get_link_status = 1;
 845                 /* ICH8 workaround-- Call gig speed drop workaround on cable
 846                  * disconnect (LSC) before accessing any PHY registers */
 847                 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
 848                     (!(er32(STATUS) & E1000_STATUS_LU)))
 849                         e1000e_gig_downshift_workaround_ich8lan(hw);
 850
 851                 /* 80003ES2LAN workaround-- For packet buffer work-around on
 852                  * link down event; disable receives here in the ISR and reset
 853                  * adapter in watchdog */
 854                 if (netif_carrier_ok(netdev) &&
 855                     adapter->flags & FLAG_RX_NEEDS_RESTART) {
 856                         /* disable receives */
 857                         u32 rctl = er32(RCTL);
 858                         ew32(RCTL, rctl & ~E1000_RCTL_EN);
 859                 }
 860                 /* guard against interrupt when we're going down */
 861                 if (!test_bit(__E1000_DOWN, &adapter->state))
 862                         mod_timer(&adapter->watchdog_timer, jiffies + 1);
 863         }
 864
 865         if (netif_rx_schedule_prep(netdev, &adapter->napi)) {
 866                 adapter->total_tx_bytes = 0;
 867                 adapter->total_tx_packets = 0;
 868                 adapter->total_rx_bytes = 0;
 869                 adapter->total_rx_packets = 0;
 870                 __netif_rx_schedule(netdev, &adapter->napi);
 871         } else {
 872                 atomic_dec(&adapter->irq_sem);
 873         }
 874
 875         return IRQ_HANDLED;
 876 }
 877
 878 /**
 879  * e1000_intr - Interrupt Handler
 880  * @irq: interrupt number
 881  * @data: pointer to a network interface device structure
 882  **/
 883 static irqreturn_t e1000_intr(int irq, void *data)
 884 {
 885         struct net_device *netdev = data;
 886         struct e1000_adapter *adapter = netdev_priv(netdev);
 887         struct e1000_hw *hw = &adapter->hw;
 888
 889         u32 rctl, icr = er32(ICR);
 890         if (!icr)
 891                 return IRQ_NONE;  /* Not our interrupt */
 892
 893         /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
 894          * not set, then the adapter didn't send an interrupt */
 895         if (!(icr & E1000_ICR_INT_ASSERTED))
 896                 return IRQ_NONE;
 897
 898         /* Interrupt Auto-Mask...upon reading ICR,
 899          * interrupts are masked.  No need for the
 900          * IMC write, but it does mean we should
 901          * account for it ASAP. */
 902         atomic_inc(&adapter->irq_sem);
 903
 904         if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
 905                 hw->mac.get_link_status = 1;
 906                 /* ICH8 workaround-- Call gig speed drop workaround on cable
 907                  * disconnect (LSC) before accessing any PHY registers */
 908                 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
 909                     (!(er32(STATUS) & E1000_STATUS_LU)))
 910                         e1000e_gig_downshift_workaround_ich8lan(hw);
 911
 912                 /* 80003ES2LAN workaround--
 913                  * For packet buffer work-around on link down event;
 914                  * disable receives here in the ISR and
 915                  * reset adapter in watchdog
 916                  */
 917                 if (netif_carrier_ok(netdev) &&
 918                     (adapter->flags & FLAG_RX_NEEDS_RESTART)) {
 919                         /* disable receives */
 920                         rctl = er32(RCTL);
 921                         ew32(RCTL, rctl & ~E1000_RCTL_EN);
 922                 }
 923                 /* guard against interrupt when we're going down */
 924                 if (!test_bit(__E1000_DOWN, &adapter->state))
 925                         mod_timer(&adapter->watchdog_timer, jiffies + 1);
 926         }
 927
 928         if (netif_rx_schedule_prep(netdev, &adapter->napi)) {
 929                 adapter->total_tx_bytes = 0;
 930                 adapter->total_tx_packets = 0;
 931                 adapter->total_rx_bytes = 0;
 932                 adapter->total_rx_packets = 0;
 933                 __netif_rx_schedule(netdev, &adapter->napi);
 934         } else {
 935                 atomic_dec(&adapter->irq_sem);
 936         }
 937
 938         return IRQ_HANDLED;
 939 }
 940
 941 static int e1000_request_irq(struct e1000_adapter *adapter)
 942 {
 943         struct net_device *netdev = adapter->netdev;
 944         irq_handler_t handler = e1000_intr;
 945         int irq_flags = IRQF_SHARED;
 946         int err;
 947
 948         if (!pci_enable_msi(adapter->pdev)) {
 949                 adapter->flags |= FLAG_MSI_ENABLED;
 950                 handler = e1000_intr_msi;
 951                 irq_flags = 0;
 952         }
 953
 954         err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name,
 955                           netdev);
 956         if (err) {
 957                 ndev_err(netdev,
 958                        "Unable to allocate %s interrupt (return: %d)\n",
 959                         adapter->flags & FLAG_MSI_ENABLED ? "MSI":"INTx",
 960                         err);
 961                 if (adapter->flags & FLAG_MSI_ENABLED)
 962                         pci_disable_msi(adapter->pdev);
 963         }
 964
 965         return err;
 966 }
 967
 968 static void e1000_free_irq(struct e1000_adapter *adapter)
 969 {
 970         struct net_device *netdev = adapter->netdev;
 971
 972         free_irq(adapter->pdev->irq, netdev);
 973         if (adapter->flags & FLAG_MSI_ENABLED) {
 974                 pci_disable_msi(adapter->pdev);
 975                 adapter->flags &= ~FLAG_MSI_ENABLED;
 976         }
 977 }
 978
 979 /**
 980  * e1000_irq_disable - Mask off interrupt generation on the NIC
 981  **/
 982 static void e1000_irq_disable(struct e1000_adapter *adapter)
 983 {
 984         struct e1000_hw *hw = &adapter->hw;
 985
 986         atomic_inc(&adapter->irq_sem);
 987         ew32(IMC, ~0);
 988         e1e_flush();
 989         synchronize_irq(adapter->pdev->irq);
 990 }
 991
 992 /**
 993  * e1000_irq_enable - Enable default interrupt generation settings
 994  **/
 995 static void e1000_irq_enable(struct e1000_adapter *adapter)
 996 {
 997         struct e1000_hw *hw = &adapter->hw;
 998
 999         if (atomic_dec_and_test(&adapter->irq_sem)) {
1000                 ew32(IMS, IMS_ENABLE_MASK);
1001                 e1e_flush();
1002         }
1003 }
1004
1005 /**
1006  * e1000_get_hw_control - get control of the h/w from f/w
1007  * @adapter: address of board private structure
1008  *
1009  * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit.
1010  * For ASF and Pass Through versions of f/w this means that
1011  * the driver is loaded. For AMT version (only with 82573)
1012  * of the f/w this means that the network i/f is open.
1013  **/
1014 static void e1000_get_hw_control(struct e1000_adapter *adapter)
1015 {
1016         struct e1000_hw *hw = &adapter->hw;
1017         u32 ctrl_ext;
1018         u32 swsm;
1019
1020         /* Let firmware know the driver has taken over */
1021         if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
1022                 swsm = er32(SWSM);
1023                 ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD);
1024         } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
1025                 ctrl_ext = er32(CTRL_EXT);
1026                 ew32(CTRL_EXT,
1027                                 ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
1028         }
1029 }
1030
1031 /**
1032  * e1000_release_hw_control - release control of the h/w to f/w
1033  * @adapter: address of board private structure
1034  *
1035  * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit.
1036  * For ASF and Pass Through versions of f/w this means that the
1037  * driver is no longer loaded. For AMT version (only with 82573) i
1038  * of the f/w this means that the network i/f is closed.
1039  *
1040  **/
1041 static void e1000_release_hw_control(struct e1000_adapter *adapter)
1042 {
1043         struct e1000_hw *hw = &adapter->hw;
1044         u32 ctrl_ext;
1045         u32 swsm;
1046
1047         /* Let firmware taken over control of h/w */
1048         if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
1049                 swsm = er32(SWSM);
1050                 ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD);
1051         } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
1052                 ctrl_ext = er32(CTRL_EXT);
1053                 ew32(CTRL_EXT,
1054                                 ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
1055         }
1056 }
1057
1058 static void e1000_release_manageability(struct e1000_adapter *adapter)
1059 {
1060         if (adapter->flags & FLAG_MNG_PT_ENABLED) {
1061                 struct e1000_hw *hw = &adapter->hw;
1062
1063                 u32 manc = er32(MANC);
1064
1065                 /* re-enable hardware interception of ARP */
1066                 manc |= E1000_MANC_ARP_EN;
1067                 manc &= ~E1000_MANC_EN_MNG2HOST;
1068
1069                 /* don't explicitly have to mess with MANC2H since
1070                  * MANC has an enable disable that gates MANC2H */
1071                 ew32(MANC, manc);
1072         }
1073 }
1074
1075 /**
1076  * @e1000_alloc_ring - allocate memory for a ring structure
1077  **/
1078 static int e1000_alloc_ring_dma(struct e1000_adapter *adapter,
1079                                 struct e1000_ring *ring)
1080 {
1081         struct pci_dev *pdev = adapter->pdev;
1082
1083         ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma,
1084                                         GFP_KERNEL);
1085         if (!ring->desc)
1086                 return -ENOMEM;
1087
1088         return 0;
1089 }
1090
1091 /**
1092  * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
1093  * @adapter: board private structure
1094  *
1095  * Return 0 on success, negative on failure
1096  **/
1097 int e1000e_setup_tx_resources(struct e1000_adapter *adapter)
1098 {
1099         struct e1000_ring *tx_ring = adapter->tx_ring;
1100         int err = -ENOMEM, size;
1101
1102         size = sizeof(struct e1000_buffer) * tx_ring->count;
1103         tx_ring->buffer_info = vmalloc(size);
1104         if (!tx_ring->buffer_info)
1105                 goto err;
1106         memset(tx_ring->buffer_info, 0, size);
1107
1108         /* round up to nearest 4K */
1109         tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc);
1110         tx_ring->size = ALIGN(tx_ring->size, 4096);
1111
1112         err = e1000_alloc_ring_dma(adapter, tx_ring);
1113         if (err)
1114                 goto err;
1115
1116         tx_ring->next_to_use = 0;
1117         tx_ring->next_to_clean = 0;
1118         spin_lock_init(&adapter->tx_queue_lock);
1119
1120         return 0;
1121 err:
1122         vfree(tx_ring->buffer_info);
1123         ndev_err(adapter->netdev,
1124         "Unable to allocate memory for the transmit descriptor ring\n");
1125         return err;
1126 }
1127
1128 /**
1129  * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
1130  * @adapter: board private structure
1131  *
1132  * Returns 0 on success, negative on failure
1133  **/
1134 int e1000e_setup_rx_resources(struct e1000_adapter *adapter)
1135 {
1136         struct e1000_ring *rx_ring = adapter->rx_ring;
1137         struct e1000_buffer *buffer_info;
1138         int i, size, desc_len, err = -ENOMEM;
1139
1140         size = sizeof(struct e1000_buffer) * rx_ring->count;
1141         rx_ring->buffer_info = vmalloc(size);
1142         if (!rx_ring->buffer_info)
1143                 goto err;
1144         memset(rx_ring->buffer_info, 0, size);
1145
1146         for (i = 0; i < rx_ring->count; i++) {
1147                 buffer_info = &rx_ring->buffer_info[i];
1148                 buffer_info->ps_pages = kcalloc(PS_PAGE_BUFFERS,
1149                                                 sizeof(struct e1000_ps_page),
1150                                                 GFP_KERNEL);
1151                 if (!buffer_info->ps_pages)
1152                         goto err_pages;
1153         }
1154
1155         desc_len = sizeof(union e1000_rx_desc_packet_split);
1156
1157         /* Round up to nearest 4K */
1158         rx_ring->size = rx_ring->count * desc_len;
1159         rx_ring->size = ALIGN(rx_ring->size, 4096);
1160
1161         err = e1000_alloc_ring_dma(adapter, rx_ring);
1162         if (err)
1163                 goto err_pages;
1164
1165         rx_ring->next_to_clean = 0;
1166         rx_ring->next_to_use = 0;
1167         rx_ring->rx_skb_top = NULL;
1168
1169         return 0;
1170
1171 err_pages:
1172         for (i = 0; i < rx_ring->count; i++) {
1173                 buffer_info = &rx_ring->buffer_info[i];
1174                 kfree(buffer_info->ps_pages);
1175         }
1176 err:
1177         vfree(rx_ring->buffer_info);
1178         ndev_err(adapter->netdev,
1179         "Unable to allocate memory for the transmit descriptor ring\n");
1180         return err;
1181 }
1182
1183 /**
1184  * e1000_clean_tx_ring - Free Tx Buffers
1185  * @adapter: board private structure
1186  **/
1187 static void e1000_clean_tx_ring(struct e1000_adapter *adapter)
1188 {
1189         struct e1000_ring *tx_ring = adapter->tx_ring;
1190         struct e1000_buffer *buffer_info;
1191         unsigned long size;
1192         unsigned int i;
1193
1194         for (i = 0; i < tx_ring->count; i++) {
1195                 buffer_info = &tx_ring->buffer_info[i];
1196                 e1000_put_txbuf(adapter, buffer_info);
1197         }
1198
1199         size = sizeof(struct e1000_buffer) * tx_ring->count;
1200         memset(tx_ring->buffer_info, 0, size);
1201
1202         memset(tx_ring->desc, 0, tx_ring->size);
1203
1204         tx_ring->next_to_use = 0;
1205         tx_ring->next_to_clean = 0;
1206
1207         writel(0, adapter->hw.hw_addr + tx_ring->head);
1208         writel(0, adapter->hw.hw_addr + tx_ring->tail);
1209 }
1210
1211 /**
1212  * e1000e_free_tx_resources - Free Tx Resources per Queue
1213  * @adapter: board private structure
1214  *
1215  * Free all transmit software resources
1216  **/
1217 void e1000e_free_tx_resources(struct e1000_adapter *adapter)
1218 {
1219         struct pci_dev *pdev = adapter->pdev;
1220         struct e1000_ring *tx_ring = adapter->tx_ring;
1221
1222         e1000_clean_tx_ring(adapter);
1223
1224         vfree(tx_ring->buffer_info);
1225         tx_ring->buffer_info = NULL;
1226
1227         dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
1228                           tx_ring->dma);
1229         tx_ring->desc = NULL;
1230 }
1231
1232 /**
1233  * e1000e_free_rx_resources - Free Rx Resources
1234  * @adapter: board private structure
1235  *
1236  * Free all receive software resources
1237  **/
1238
1239 void e1000e_free_rx_resources(struct e1000_adapter *adapter)
1240 {
1241         struct pci_dev *pdev = adapter->pdev;
1242         struct e1000_ring *rx_ring = adapter->rx_ring;
1243         int i;
1244
1245         e1000_clean_rx_ring(adapter);
1246
1247         for (i = 0; i < rx_ring->count; i++) {
1248                 kfree(rx_ring->buffer_info[i].ps_pages);
1249         }
1250
1251         vfree(rx_ring->buffer_info);
1252         rx_ring->buffer_info = NULL;
1253
1254         dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
1255                           rx_ring->dma);
1256         rx_ring->desc = NULL;
1257 }
1258
1259 /**
1260  * e1000_update_itr - update the dynamic ITR value based on statistics
1261  *      Stores a new ITR value based on packets and byte
1262  *      counts during the last interrupt.  The advantage of per interrupt
1263  *      computation is faster updates and more accurate ITR for the current
1264  *      traffic pattern.  Constants in this function were computed
1265  *      based on theoretical maximum wire speed and thresholds were set based
1266  *      on testing data as well as attempting to minimize response time
1267  *      while increasing bulk throughput.
1268  *      this functionality is controlled by the InterruptThrottleRate module
1269  *      parameter (see e1000_param.c)
1270  * @adapter: pointer to adapter
1271  * @itr_setting: current adapter->itr
1272  * @packets: the number of packets during this measurement interval
1273  * @bytes: the number of bytes during this measurement interval
1274  **/
1275 static unsigned int e1000_update_itr(struct e1000_adapter *adapter,
1276                                      u16 itr_setting, int packets,
1277                                      int bytes)
1278 {
1279         unsigned int retval = itr_setting;
1280
1281         if (packets == 0)
1282                 goto update_itr_done;
1283
1284         switch (itr_setting) {
1285         case lowest_latency:
1286                 /* handle TSO and jumbo frames */
1287                 if (bytes/packets > 8000)
1288                         retval = bulk_latency;
1289                 else if ((packets < 5) && (bytes > 512)) {
1290                         retval = low_latency;
1291                 }
1292                 break;
1293         case low_latency:  /* 50 usec aka 20000 ints/s */
1294                 if (bytes > 10000) {
1295                         /* this if handles the TSO accounting */
1296                         if (bytes/packets > 8000) {
1297                                 retval = bulk_latency;
1298                         } else if ((packets < 10) || ((bytes/packets) > 1200)) {
1299                                 retval = bulk_latency;
1300                         } else if ((packets > 35)) {
1301                                 retval = lowest_latency;
1302                         }
1303                 } else if (bytes/packets > 2000) {
1304                         retval = bulk_latency;
1305                 } else if (packets <= 2 && bytes < 512) {
1306                         retval = lowest_latency;
1307                 }
1308                 break;
1309         case bulk_latency: /* 250 usec aka 4000 ints/s */
1310                 if (bytes > 25000) {
1311                         if (packets > 35) {
1312                                 retval = low_latency;
1313                         }
1314                 } else if (bytes < 6000) {
1315                         retval = low_latency;
1316                 }
1317                 break;
1318         }
1319
1320 update_itr_done:
1321         return retval;
1322 }
1323
1324 static void e1000_set_itr(struct e1000_adapter *adapter)
1325 {
1326         struct e1000_hw *hw = &adapter->hw;
1327         u16 current_itr;
1328         u32 new_itr = adapter->itr;
1329
1330         /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
1331         if (adapter->link_speed != SPEED_1000) {
1332                 current_itr = 0;
1333                 new_itr = 4000;
1334                 goto set_itr_now;
1335         }
1336
1337         adapter->tx_itr = e1000_update_itr(adapter,
1338                                     adapter->tx_itr,
1339                                     adapter->total_tx_packets,
1340                                     adapter->total_tx_bytes);
1341         /* conservative mode (itr 3) eliminates the lowest_latency setting */
1342         if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency)
1343                 adapter->tx_itr = low_latency;
1344
1345         adapter->rx_itr = e1000_update_itr(adapter,
1346                                     adapter->rx_itr,
1347                                     adapter->total_rx_packets,
1348                                     adapter->total_rx_bytes);
1349         /* conservative mode (itr 3) eliminates the lowest_latency setting */
1350         if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
1351                 adapter->rx_itr = low_latency;
1352
1353         current_itr = max(adapter->rx_itr, adapter->tx_itr);
1354
1355         switch (current_itr) {
1356         /* counts and packets in update_itr are dependent on these numbers */
1357         case lowest_latency:
1358                 new_itr = 70000;
1359                 break;
1360         case low_latency:
1361                 new_itr = 20000; /* aka hwitr = ~200 */
1362                 break;
1363         case bulk_latency:
1364                 new_itr = 4000;
1365                 break;
1366         default:
1367                 break;
1368         }
1369
1370 set_itr_now:
1371         if (new_itr != adapter->itr) {
1372                 /* this attempts to bias the interrupt rate towards Bulk
1373                  * by adding intermediate steps when interrupt rate is
1374                  * increasing */
1375                 new_itr = new_itr > adapter->itr ?
1376                              min(adapter->itr + (new_itr >> 2), new_itr) :
1377                              new_itr;
1378                 adapter->itr = new_itr;
1379                 ew32(ITR, 1000000000 / (new_itr * 256));
1380         }
1381 }
1382
1383 /**
1384  * e1000_clean - NAPI Rx polling callback
1385  * @adapter: board private structure
1386  **/
1387 static int e1000_clean(struct napi_struct *napi, int budget)
1388 {
1389         struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi);
1390         struct net_device *poll_dev = adapter->netdev;
1391         int tx_cleaned = 0, work_done = 0;
1392
1393         /* Must NOT use netdev_priv macro here. */
1394         adapter = poll_dev->priv;
1395
1396         /* e1000_clean is called per-cpu.  This lock protects
1397          * tx_ring from being cleaned by multiple cpus
1398          * simultaneously.  A failure obtaining the lock means
1399          * tx_ring is currently being cleaned anyway. */
1400         if (spin_trylock(&adapter->tx_queue_lock)) {
1401                 tx_cleaned = e1000_clean_tx_irq(adapter);
1402                 spin_unlock(&adapter->tx_queue_lock);
1403         }
1404
1405         adapter->clean_rx(adapter, &work_done, budget);
1406
1407         if (tx_cleaned)
1408                 work_done = budget;
1409
1410         /* If budget not fully consumed, exit the polling mode */
1411         if (work_done < budget) {
1412                 if (adapter->itr_setting & 3)
1413                         e1000_set_itr(adapter);
1414                 netif_rx_complete(poll_dev, napi);
1415                 e1000_irq_enable(adapter);
1416         }
1417
1418         return work_done;
1419 }
1420
1421 static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
1422 {
1423         struct e1000_adapter *adapter = netdev_priv(netdev);
1424         struct e1000_hw *hw = &adapter->hw;
1425         u32 vfta, index;
1426
1427         /* don't update vlan cookie if already programmed */
1428         if ((adapter->hw.mng_cookie.status &
1429              E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
1430             (vid == adapter->mng_vlan_id))
1431                 return;
1432         /* add VID to filter table */
1433         index = (vid >> 5) & 0x7F;
1434         vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
1435         vfta |= (1 << (vid & 0x1F));
1436         e1000e_write_vfta(hw, index, vfta);
1437 }
1438
1439 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
1440 {
1441         struct e1000_adapter *adapter = netdev_priv(netdev);
1442         struct e1000_hw *hw = &adapter->hw;
1443         u32 vfta, index;
1444
1445         e1000_irq_disable(adapter);
1446         vlan_group_set_device(adapter->vlgrp, vid, NULL);
1447         e1000_irq_enable(adapter);
1448
1449         if ((adapter->hw.mng_cookie.status &
1450              E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
1451             (vid == adapter->mng_vlan_id)) {
1452                 /* release control to f/w */
1453                 e1000_release_hw_control(adapter);
1454                 return;
1455         }
1456
1457         /* remove VID from filter table */
1458         index = (vid >> 5) & 0x7F;
1459         vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
1460         vfta &= ~(1 << (vid & 0x1F));
1461         e1000e_write_vfta(hw, index, vfta);
1462 }
1463
1464 static void e1000_update_mng_vlan(struct e1000_adapter *adapter)
1465 {
1466         struct net_device *netdev = adapter->netdev;
1467         u16 vid = adapter->hw.mng_cookie.vlan_id;
1468         u16 old_vid = adapter->mng_vlan_id;
1469
1470         if (!adapter->vlgrp)
1471                 return;
1472
1473         if (!vlan_group_get_device(adapter->vlgrp, vid)) {
1474                 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
1475                 if (adapter->hw.mng_cookie.status &
1476                         E1000_MNG_DHCP_COOKIE_STATUS_VLAN) {
1477                         e1000_vlan_rx_add_vid(netdev, vid);
1478                         adapter->mng_vlan_id = vid;
1479                 }
1480
1481                 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) &&
1482                                 (vid != old_vid) &&
1483                     !vlan_group_get_device(adapter->vlgrp, old_vid))
1484                         e1000_vlan_rx_kill_vid(netdev, old_vid);
1485         } else {
1486                 adapter->mng_vlan_id = vid;
1487         }
1488 }
1489
1490
1491 static void e1000_vlan_rx_register(struct net_device *netdev,
1492                                    struct vlan_group *grp)
1493 {
1494         struct e1000_adapter *adapter = netdev_priv(netdev);
1495         struct e1000_hw *hw = &adapter->hw;
1496         u32 ctrl, rctl;
1497
1498         e1000_irq_disable(adapter);
1499         adapter->vlgrp = grp;
1500
1501         if (grp) {
1502                 /* enable VLAN tag insert/strip */
1503                 ctrl = er32(CTRL);
1504                 ctrl |= E1000_CTRL_VME;
1505                 ew32(CTRL, ctrl);
1506
1507                 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
1508                         /* enable VLAN receive filtering */
1509                         rctl = er32(RCTL);
1510                         rctl |= E1000_RCTL_VFE;
1511                         rctl &= ~E1000_RCTL_CFIEN;
1512                         ew32(RCTL, rctl);
1513                         e1000_update_mng_vlan(adapter);
1514                 }
1515         } else {
1516                 /* disable VLAN tag insert/strip */
1517                 ctrl = er32(CTRL);
1518                 ctrl &= ~E1000_CTRL_VME;
1519                 ew32(CTRL, ctrl);
1520
1521                 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
1522                         /* disable VLAN filtering */
1523                         rctl = er32(RCTL);
1524                         rctl &= ~E1000_RCTL_VFE;
1525                         ew32(RCTL, rctl);
1526                         if (adapter->mng_vlan_id !=
1527                             (u16)E1000_MNG_VLAN_NONE) {
1528                                 e1000_vlan_rx_kill_vid(netdev,
1529                                                        adapter->mng_vlan_id);
1530                                 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
1531                         }
1532                 }
1533         }
1534
1535         e1000_irq_enable(adapter);
1536 }
1537
1538 static void e1000_restore_vlan(struct e1000_adapter *adapter)
1539 {
1540         u16 vid;
1541
1542         e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp);
1543
1544         if (!adapter->vlgrp)
1545                 return;
1546
1547         for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
1548                 if (!vlan_group_get_device(adapter->vlgrp, vid))
1549                         continue;
1550                 e1000_vlan_rx_add_vid(adapter->netdev, vid);
1551         }
1552 }
1553
1554 static void e1000_init_manageability(struct e1000_adapter *adapter)
1555 {
1556         struct e1000_hw *hw = &adapter->hw;
1557         u32 manc, manc2h;
1558
1559         if (!(adapter->flags & FLAG_MNG_PT_ENABLED))
1560                 return;
1561
1562         manc = er32(MANC);
1563
1564         /* disable hardware interception of ARP */
1565         manc &= ~(E1000_MANC_ARP_EN);
1566
1567         /* enable receiving management packets to the host. this will probably
1568          * generate destination unreachable messages from the host OS, but
1569          * the packets will be handled on SMBUS */
1570         manc |= E1000_MANC_EN_MNG2HOST;
1571         manc2h = er32(MANC2H);
1572 #define E1000_MNG2HOST_PORT_623 (1 << 5)
1573 #define E1000_MNG2HOST_PORT_664 (1 << 6)
1574         manc2h |= E1000_MNG2HOST_PORT_623;
1575         manc2h |= E1000_MNG2HOST_PORT_664;
1576         ew32(MANC2H, manc2h);
1577         ew32(MANC, manc);
1578 }
1579
1580 /**
1581  * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1582  * @adapter: board private structure
1583  *
1584  * Configure the Tx unit of the MAC after a reset.
1585  **/
1586 static void e1000_configure_tx(struct e1000_adapter *adapter)
1587 {
1588         struct e1000_hw *hw = &adapter->hw;
1589         struct e1000_ring *tx_ring = adapter->tx_ring;
1590         u64 tdba;
1591         u32 tdlen, tctl, tipg, tarc;
1592         u32 ipgr1, ipgr2;
1593
1594         /* Setup the HW Tx Head and Tail descriptor pointers */
1595         tdba = tx_ring->dma;
1596         tdlen = tx_ring->count * sizeof(struct e1000_tx_desc);
1597         ew32(TDBAL, (tdba & DMA_32BIT_MASK));
1598         ew32(TDBAH, (tdba >> 32));
1599         ew32(TDLEN, tdlen);
1600         ew32(TDH, 0);
1601         ew32(TDT, 0);
1602         tx_ring->head = E1000_TDH;
1603         tx_ring->tail = E1000_TDT;
1604
1605         /* Set the default values for the Tx Inter Packet Gap timer */
1606         tipg = DEFAULT_82543_TIPG_IPGT_COPPER;          /*  8  */
1607         ipgr1 = DEFAULT_82543_TIPG_IPGR1;               /*  8  */
1608         ipgr2 = DEFAULT_82543_TIPG_IPGR2;               /*  6  */
1609
1610         if (adapter->flags & FLAG_TIPG_MEDIUM_FOR_80003ESLAN)
1611                 ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2; /*  7  */
1612
1613         tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT;
1614         tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT;
1615         ew32(TIPG, tipg);
1616
1617         /* Set the Tx Interrupt Delay register */
1618         ew32(TIDV, adapter->tx_int_delay);
1619         /* tx irq moderation */
1620         ew32(TADV, adapter->tx_abs_int_delay);
1621
1622         /* Program the Transmit Control Register */
1623         tctl = er32(TCTL);
1624         tctl &= ~E1000_TCTL_CT;
1625         tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC |
1626                 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
1627
1628         if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) {
1629                 tarc = er32(TARC0);
1630                 /* set the speed mode bit, we'll clear it if we're not at
1631                  * gigabit link later */
1632 #define SPEED_MODE_BIT (1 << 21)
1633                 tarc |= SPEED_MODE_BIT;
1634                 ew32(TARC0, tarc);
1635         }
1636
1637         /* errata: program both queues to unweighted RR */
1638         if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) {
1639                 tarc = er32(TARC0);
1640                 tarc |= 1;
1641                 ew32(TARC0, tarc);
1642                 tarc = er32(TARC1);
1643                 tarc |= 1;
1644                 ew32(TARC1, tarc);
1645         }
1646
1647         e1000e_config_collision_dist(hw);
1648
1649         /* Setup Transmit Descriptor Settings for eop descriptor */
1650         adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;
1651
1652         /* only set IDE if we are delaying interrupts using the timers */
1653         if (adapter->tx_int_delay)
1654                 adapter->txd_cmd |= E1000_TXD_CMD_IDE;
1655
1656         /* enable Report Status bit */
1657         adapter->txd_cmd |= E1000_TXD_CMD_RS;
1658
1659         ew32(TCTL, tctl);
1660
1661         adapter->tx_queue_len = adapter->netdev->tx_queue_len;
1662 }
1663
1664 /**
1665  * e1000_setup_rctl - configure the receive control registers
1666  * @adapter: Board private structure
1667  **/
1668 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1669                            (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1670 static void e1000_setup_rctl(struct e1000_adapter *adapter)
1671 {
1672         struct e1000_hw *hw = &adapter->hw;
1673         u32 rctl, rfctl;
1674         u32 psrctl = 0;
1675         u32 pages = 0;
1676
1677         /* Program MC offset vector base */
1678         rctl = er32(RCTL);
1679         rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
1680         rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
1681                 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
1682                 (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
1683
1684         /* Do not Store bad packets */
1685         rctl &= ~E1000_RCTL_SBP;
1686
1687         /* Enable Long Packet receive */
1688         if (adapter->netdev->mtu <= ETH_DATA_LEN)
1689                 rctl &= ~E1000_RCTL_LPE;
1690         else
1691                 rctl |= E1000_RCTL_LPE;
1692
1693         /* Setup buffer sizes */
1694         rctl &= ~E1000_RCTL_SZ_4096;
1695         rctl |= E1000_RCTL_BSEX;
1696         switch (adapter->rx_buffer_len) {
1697         case 256:
1698                 rctl |= E1000_RCTL_SZ_256;
1699                 rctl &= ~E1000_RCTL_BSEX;
1700                 break;
1701         case 512:
1702                 rctl |= E1000_RCTL_SZ_512;
1703                 rctl &= ~E1000_RCTL_BSEX;
1704                 break;
1705         case 1024:
1706                 rctl |= E1000_RCTL_SZ_1024;
1707                 rctl &= ~E1000_RCTL_BSEX;
1708                 break;
1709         case 2048:
1710         default:
1711                 rctl |= E1000_RCTL_SZ_2048;
1712                 rctl &= ~E1000_RCTL_BSEX;
1713                 break;
1714         case 4096:
1715                 rctl |= E1000_RCTL_SZ_4096;
1716                 break;
1717         case 8192:
1718                 rctl |= E1000_RCTL_SZ_8192;
1719                 break;
1720         case 16384:
1721                 rctl |= E1000_RCTL_SZ_16384;
1722                 break;
1723         }
1724
1725         /*
1726          * 82571 and greater support packet-split where the protocol
1727          * header is placed in skb->data and the packet data is
1728          * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1729          * In the case of a non-split, skb->data is linearly filled,
1730          * followed by the page buffers.  Therefore, skb->data is
1731          * sized to hold the largest protocol header.
1732          *
1733          * allocations using alloc_page take too long for regular MTU
1734          * so only enable packet split for jumbo frames
1735          *
1736          * Using pages when the page size is greater than 16k wastes
1737          * a lot of memory, since we allocate 3 pages at all times
1738          * per packet.
1739          */
1740         adapter->rx_ps_pages = 0;
1741         pages = PAGE_USE_COUNT(adapter->netdev->mtu);
1742         if ((pages <= 3) && (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE))
1743                 adapter->rx_ps_pages = pages;
1744
1745         if (adapter->rx_ps_pages) {
1746                 /* Configure extra packet-split registers */
1747                 rfctl = er32(RFCTL);
1748                 rfctl |= E1000_RFCTL_EXTEN;
1749                 /* disable packet split support for IPv6 extension headers,
1750                  * because some malformed IPv6 headers can hang the RX */
1751                 rfctl |= (E1000_RFCTL_IPV6_EX_DIS |
1752                           E1000_RFCTL_NEW_IPV6_EXT_DIS);
1753
1754                 ew32(RFCTL, rfctl);
1755
1756                 /* Enable Packet split descriptors */
1757                 rctl |= E1000_RCTL_DTYP_PS;
1758
1759                 /* Enable hardware CRC frame stripping */
1760                 rctl |= E1000_RCTL_SECRC;
1761
1762                 psrctl |= adapter->rx_ps_bsize0 >>
1763                         E1000_PSRCTL_BSIZE0_SHIFT;
1764
1765                 switch (adapter->rx_ps_pages) {
1766                 case 3:
1767                         psrctl |= PAGE_SIZE <<
1768                                 E1000_PSRCTL_BSIZE3_SHIFT;
1769                 case 2:
1770                         psrctl |= PAGE_SIZE <<
1771                                 E1000_PSRCTL_BSIZE2_SHIFT;
1772                 case 1:
1773                         psrctl |= PAGE_SIZE >>
1774                                 E1000_PSRCTL_BSIZE1_SHIFT;
1775                         break;
1776                 }
1777
1778                 ew32(PSRCTL, psrctl);
1779         }
1780
1781         ew32(RCTL, rctl);
1782 }
1783
1784 /**
1785  * e1000_configure_rx - Configure Receive Unit after Reset
1786  * @adapter: board private structure
1787  *
1788  * Configure the Rx unit of the MAC after a reset.
1789  **/
1790 static void e1000_configure_rx(struct e1000_adapter *adapter)
1791 {
1792         struct e1000_hw *hw = &adapter->hw;
1793         struct e1000_ring *rx_ring = adapter->rx_ring;
1794         u64 rdba;
1795         u32 rdlen, rctl, rxcsum, ctrl_ext;
1796
1797         if (adapter->rx_ps_pages) {
1798                 /* this is a 32 byte descriptor */
1799                 rdlen = rx_ring->count *
1800                         sizeof(union e1000_rx_desc_packet_split);
1801                 adapter->clean_rx = e1000_clean_rx_irq_ps;
1802                 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps;
1803         } else {
1804                 rdlen = rx_ring->count *
1805                         sizeof(struct e1000_rx_desc);
1806                 adapter->clean_rx = e1000_clean_rx_irq;
1807                 adapter->alloc_rx_buf = e1000_alloc_rx_buffers;
1808         }
1809
1810         /* disable receives while setting up the descriptors */
1811         rctl = er32(RCTL);
1812         ew32(RCTL, rctl & ~E1000_RCTL_EN);
1813         e1e_flush();
1814         msleep(10);
1815
1816         /* set the Receive Delay Timer Register */
1817         ew32(RDTR, adapter->rx_int_delay);
1818
1819         /* irq moderation */
1820         ew32(RADV, adapter->rx_abs_int_delay);
1821         if (adapter->itr_setting != 0)
1822                 ew32(ITR,
1823                         1000000000 / (adapter->itr * 256));
1824
1825         ctrl_ext = er32(CTRL_EXT);
1826         /* Reset delay timers after every interrupt */
1827         ctrl_ext |= E1000_CTRL_EXT_INT_TIMER_CLR;
1828         /* Auto-Mask interrupts upon ICR access */
1829         ctrl_ext |= E1000_CTRL_EXT_IAME;
1830         ew32(IAM, 0xffffffff);
1831         ew32(CTRL_EXT, ctrl_ext);
1832         e1e_flush();
1833
1834         /* Setup the HW Rx Head and Tail Descriptor Pointers and
1835          * the Base and Length of the Rx Descriptor Ring */
1836         rdba = rx_ring->dma;
1837         ew32(RDBAL, (rdba & DMA_32BIT_MASK));
1838         ew32(RDBAH, (rdba >> 32));
1839         ew32(RDLEN, rdlen);
1840         ew32(RDH, 0);
1841         ew32(RDT, 0);
1842         rx_ring->head = E1000_RDH;
1843         rx_ring->tail = E1000_RDT;
1844
1845         /* Enable Receive Checksum Offload for TCP and UDP */
1846         rxcsum = er32(RXCSUM);
1847         if (adapter->flags & FLAG_RX_CSUM_ENABLED) {
1848                 rxcsum |= E1000_RXCSUM_TUOFL;
1849
1850                 /* IPv4 payload checksum for UDP fragments must be
1851                  * used in conjunction with packet-split. */
1852                 if (adapter->rx_ps_pages)
1853                         rxcsum |= E1000_RXCSUM_IPPCSE;
1854         } else {
1855                 rxcsum &= ~E1000_RXCSUM_TUOFL;
1856                 /* no need to clear IPPCSE as it defaults to 0 */
1857         }
1858         ew32(RXCSUM, rxcsum);
1859
1860         /* Enable early receives on supported devices, only takes effect when
1861          * packet size is equal or larger than the specified value (in 8 byte
1862          * units), e.g. using jumbo frames when setting to E1000_ERT_2048 */
1863         if ((adapter->flags & FLAG_HAS_ERT) &&
1864             (adapter->netdev->mtu > ETH_DATA_LEN))
1865                 ew32(ERT, E1000_ERT_2048);
1866
1867         /* Enable Receives */
1868         ew32(RCTL, rctl);
1869 }
1870
1871 /**
1872  *  e1000_mc_addr_list_update - Update Multicast addresses
1873  *  @hw: pointer to the HW structure
1874  *  @mc_addr_list: array of multicast addresses to program
1875  *  @mc_addr_count: number of multicast addresses to program
1876  *  @rar_used_count: the first RAR register free to program
1877  *  @rar_count: total number of supported Receive Address Registers
1878  *
1879  *  Updates the Receive Address Registers and Multicast Table Array.
1880  *  The caller must have a packed mc_addr_list of multicast addresses.
1881  *  The parameter rar_count will usually be hw->mac.rar_entry_count
1882  *  unless there are workarounds that change this.  Currently no func pointer
1883  *  exists and all implementations are handled in the generic version of this
1884  *  function.
1885  **/
1886 static void e1000_mc_addr_list_update(struct e1000_hw *hw, u8 *mc_addr_list,
1887                                u32 mc_addr_count, u32 rar_used_count,
1888                                u32 rar_count)
1889 {
1890         hw->mac.ops.mc_addr_list_update(hw, mc_addr_list, mc_addr_count,
1891                                         rar_used_count, rar_count);
1892 }
1893
1894 /**
1895  * e1000_set_multi - Multicast and Promiscuous mode set
1896  * @netdev: network interface device structure
1897  *
1898  * The set_multi entry point is called whenever the multicast address
1899  * list or the network interface flags are updated.  This routine is
1900  * responsible for configuring the hardware for proper multicast,
1901  * promiscuous mode, and all-multi behavior.
1902  **/
1903 static void e1000_set_multi(struct net_device *netdev)
1904 {
1905         struct e1000_adapter *adapter = netdev_priv(netdev);
1906         struct e1000_hw *hw = &adapter->hw;
1907         struct e1000_mac_info *mac = &hw->mac;
1908         struct dev_mc_list *mc_ptr;
1909         u8  *mta_list;
1910         u32 rctl;
1911         int i;
1912
1913         /* Check for Promiscuous and All Multicast modes */
1914
1915         rctl = er32(RCTL);
1916
1917         if (netdev->flags & IFF_PROMISC) {
1918                 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
1919         } else if (netdev->flags & IFF_ALLMULTI) {
1920                 rctl |= E1000_RCTL_MPE;
1921                 rctl &= ~E1000_RCTL_UPE;
1922         } else {
1923                 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
1924         }
1925
1926         ew32(RCTL, rctl);
1927
1928         if (netdev->mc_count) {
1929                 mta_list = kmalloc(netdev->mc_count * 6, GFP_ATOMIC);
1930                 if (!mta_list)
1931                         return;
1932
1933                 /* prepare a packed array of only addresses. */
1934                 mc_ptr = netdev->mc_list;
1935
1936                 for (i = 0; i < netdev->mc_count; i++) {
1937                         if (!mc_ptr)
1938                                 break;
1939                         memcpy(mta_list + (i*ETH_ALEN), mc_ptr->dmi_addr,
1940                                ETH_ALEN);
1941                         mc_ptr = mc_ptr->next;
1942                 }
1943
1944                 e1000_mc_addr_list_update(hw, mta_list, i, 1,
1945                                           mac->rar_entry_count);
1946                 kfree(mta_list);
1947         } else {
1948                 /*
1949                  * if we're called from probe, we might not have
1950                  * anything to do here, so clear out the list
1951                  */
1952                 e1000_mc_addr_list_update(hw, NULL, 0, 1,
1953                                           mac->rar_entry_count);
1954         }
1955 }
1956
1957 /**
1958  * e1000_configure - configure the hardware for RX and TX
1959  * @adapter: private board structure
1960  **/
1961 static void e1000_configure(struct e1000_adapter *adapter)
1962 {
1963         e1000_set_multi(adapter->netdev);
1964
1965         e1000_restore_vlan(adapter);
1966         e1000_init_manageability(adapter);
1967
1968         e1000_configure_tx(adapter);
1969         e1000_setup_rctl(adapter);
1970         e1000_configure_rx(adapter);
1971         adapter->alloc_rx_buf(adapter,
1972                               e1000_desc_unused(adapter->rx_ring));
1973 }
1974
1975 /**
1976  * e1000e_power_up_phy - restore link in case the phy was powered down
1977  * @adapter: address of board private structure
1978  *
1979  * The phy may be powered down to save power and turn off link when the
1980  * driver is unloaded and wake on lan is not enabled (among others)
1981  * *** this routine MUST be followed by a call to e1000e_reset ***
1982  **/
1983 void e1000e_power_up_phy(struct e1000_adapter *adapter)
1984 {
1985         u16 mii_reg = 0;
1986
1987         /* Just clear the power down bit to wake the phy back up */
1988         if (adapter->hw.media_type == e1000_media_type_copper) {
1989                 /* according to the manual, the phy will retain its
1990                  * settings across a power-down/up cycle */
1991                 e1e_rphy(&adapter->hw, PHY_CONTROL, &mii_reg);
1992                 mii_reg &= ~MII_CR_POWER_DOWN;
1993                 e1e_wphy(&adapter->hw, PHY_CONTROL, mii_reg);
1994         }
1995
1996         adapter->hw.mac.ops.setup_link(&adapter->hw);
1997 }
1998
1999 /**
2000  * e1000_power_down_phy - Power down the PHY
2001  *
2002  * Power down the PHY so no link is implied when interface is down
2003  * The PHY cannot be powered down is management or WoL is active
2004  */
2005 static void e1000_power_down_phy(struct e1000_adapter *adapter)
2006 {
2007         struct e1000_hw *hw = &adapter->hw;
2008         u16 mii_reg;
2009
2010         /* WoL is enabled */
2011         if (!adapter->wol)
2012                 return;
2013
2014         /* non-copper PHY? */
2015         if (adapter->hw.media_type != e1000_media_type_copper)
2016                 return;
2017
2018         /* reset is blocked because of a SoL/IDER session */
2019         if (e1000e_check_mng_mode(hw) ||
2020             e1000_check_reset_block(hw))
2021                 return;
2022
2023         /* managebility (AMT) is enabled */
2024         if (er32(MANC) & E1000_MANC_SMBUS_EN)
2025                 return;
2026
2027         /* power down the PHY */
2028         e1e_rphy(hw, PHY_CONTROL, &mii_reg);
2029         mii_reg |= MII_CR_POWER_DOWN;
2030         e1e_wphy(hw, PHY_CONTROL, mii_reg);
2031         mdelay(1);
2032 }
2033
2034 /**
2035  * e1000e_reset - bring the hardware into a known good state
2036  *
2037  * This function boots the hardware and enables some settings that
2038  * require a configuration cycle of the hardware - those cannot be
2039  * set/changed during runtime. After reset the device needs to be
2040  * properly configured for rx, tx etc.
2041  */
2042 void e1000e_reset(struct e1000_adapter *adapter)
2043 {
2044         struct e1000_mac_info *mac = &adapter->hw.mac;
2045         struct e1000_hw *hw = &adapter->hw;
2046         u32 tx_space, min_tx_space, min_rx_space;
2047         u32 pba;
2048         u16 hwm;
2049
2050         ew32(PBA, adapter->pba);
2051
2052         if (mac->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN ) {
2053                 /* To maintain wire speed transmits, the Tx FIFO should be
2054                  * large enough to accommodate two full transmit packets,
2055                  * rounded up to the next 1KB and expressed in KB.  Likewise,
2056                  * the Rx FIFO should be large enough to accommodate at least
2057                  * one full receive packet and is similarly rounded up and
2058                  * expressed in KB. */
2059                 pba = er32(PBA);
2060                 /* upper 16 bits has Tx packet buffer allocation size in KB */
2061                 tx_space = pba >> 16;
2062                 /* lower 16 bits has Rx packet buffer allocation size in KB */
2063                 pba &= 0xffff;
2064                 /* the tx fifo also stores 16 bytes of information about the tx
2065                  * but don't include ethernet FCS because hardware appends it */
2066                 min_tx_space = (mac->max_frame_size +
2067                                 sizeof(struct e1000_tx_desc) -
2068                                 ETH_FCS_LEN) * 2;
2069                 min_tx_space = ALIGN(min_tx_space, 1024);
2070                 min_tx_space >>= 10;
2071                 /* software strips receive CRC, so leave room for it */
2072                 min_rx_space = mac->max_frame_size;
2073                 min_rx_space = ALIGN(min_rx_space, 1024);
2074                 min_rx_space >>= 10;
2075
2076                 /* If current Tx allocation is less than the min Tx FIFO size,
2077                  * and the min Tx FIFO size is less than the current Rx FIFO
2078                  * allocation, take space away from current Rx allocation */
2079                 if ((tx_space < min_tx_space) &&
2080                     ((min_tx_space - tx_space) < pba)) {
2081                         pba -= min_tx_space - tx_space;
2082
2083                         /* if short on rx space, rx wins and must trump tx
2084                          * adjustment or use Early Receive if available */
2085                         if ((pba < min_rx_space) &&
2086                             (!(adapter->flags & FLAG_HAS_ERT)))
2087                                 /* ERT enabled in e1000_configure_rx */
2088                                 pba = min_rx_space;
2089                 }
2090
2091                 ew32(PBA, pba);
2092         }
2093
2094
2095         /* flow control settings */
2096         /* The high water mark must be low enough to fit one full frame
2097          * (or the size used for early receive) above it in the Rx FIFO.
2098          * Set it to the lower of:
2099          * - 90% of the Rx FIFO size, and
2100          * - the full Rx FIFO size minus the early receive size (for parts
2101          *   with ERT support assuming ERT set to E1000_ERT_2048), or
2102          * - the full Rx FIFO size minus one full frame */
2103         if (adapter->flags & FLAG_HAS_ERT)
2104                 hwm = min(((adapter->pba << 10) * 9 / 10),
2105                           ((adapter->pba << 10) - (E1000_ERT_2048 << 3)));
2106         else
2107                 hwm = min(((adapter->pba << 10) * 9 / 10),
2108                           ((adapter->pba << 10) - mac->max_frame_size));
2109
2110         mac->fc_high_water = hwm & 0xFFF8; /* 8-byte granularity */
2111         mac->fc_low_water = mac->fc_high_water - 8;
2112
2113         if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME)
2114                 mac->fc_pause_time = 0xFFFF;
2115         else
2116                 mac->fc_pause_time = E1000_FC_PAUSE_TIME;
2117         mac->fc = mac->original_fc;
2118
2119         /* Allow time for pending master requests to run */
2120         mac->ops.reset_hw(hw);
2121         ew32(WUC, 0);
2122
2123         if (mac->ops.init_hw(hw))
2124                 ndev_err(adapter->netdev, "Hardware Error\n");
2125
2126         e1000_update_mng_vlan(adapter);
2127
2128         /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
2129         ew32(VET, ETH_P_8021Q);
2130
2131         e1000e_reset_adaptive(hw);
2132         e1000_get_phy_info(hw);
2133
2134         if (!(adapter->flags & FLAG_SMART_POWER_DOWN)) {
2135                 u16 phy_data = 0;
2136                 /* speed up time to link by disabling smart power down, ignore
2137                  * the return value of this function because there is nothing
2138                  * different we would do if it failed */
2139                 e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data);
2140                 phy_data &= ~IGP02E1000_PM_SPD;
2141                 e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data);
2142         }
2143
2144         e1000_release_manageability(adapter);
2145 }
2146
2147 int e1000e_up(struct e1000_adapter *adapter)
2148 {
2149         struct e1000_hw *hw = &adapter->hw;
2150
2151         /* hardware has been reset, we need to reload some things */
2152         e1000_configure(adapter);
2153
2154         clear_bit(__E1000_DOWN, &adapter->state);
2155
2156         napi_enable(&adapter->napi);
2157         e1000_irq_enable(adapter);
2158
2159         /* fire a link change interrupt to start the watchdog */
2160         ew32(ICS, E1000_ICS_LSC);
2161         return 0;
2162 }
2163
2164 void e1000e_down(struct e1000_adapter *adapter)
2165 {
2166         struct net_device *netdev = adapter->netdev;
2167         struct e1000_hw *hw = &adapter->hw;
2168         u32 tctl, rctl;
2169
2170         /* signal that we're down so the interrupt handler does not
2171          * reschedule our watchdog timer */
2172         set_bit(__E1000_DOWN, &adapter->state);
2173
2174         /* disable receives in the hardware */
2175         rctl = er32(RCTL);
2176         ew32(RCTL, rctl & ~E1000_RCTL_EN);
2177         /* flush and sleep below */
2178
2179         netif_stop_queue(netdev);
2180
2181         /* disable transmits in the hardware */
2182         tctl = er32(TCTL);
2183         tctl &= ~E1000_TCTL_EN;
2184         ew32(TCTL, tctl);
2185         /* flush both disables and wait for them to finish */
2186         e1e_flush();
2187         msleep(10);
2188
2189         napi_disable(&adapter->napi);
2190         atomic_set(&adapter->irq_sem, 0);
2191         e1000_irq_disable(adapter);
2192
2193         del_timer_sync(&adapter->watchdog_timer);
2194         del_timer_sync(&adapter->phy_info_timer);
2195
2196         netdev->tx_queue_len = adapter->tx_queue_len;
2197         netif_carrier_off(netdev);
2198         adapter->link_speed = 0;
2199         adapter->link_duplex = 0;
2200
2201         e1000e_reset(adapter);
2202         e1000_clean_tx_ring(adapter);
2203         e1000_clean_rx_ring(adapter);
2204
2205         /*
2206          * TODO: for power management, we could drop the link and
2207          * pci_disable_device here.
2208          */
2209 }
2210
2211 void e1000e_reinit_locked(struct e1000_adapter *adapter)
2212 {
2213         might_sleep();
2214         while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
2215                 msleep(1);
2216         e1000e_down(adapter);
2217         e1000e_up(adapter);
2218         clear_bit(__E1000_RESETTING, &adapter->state);
2219 }
2220
2221 /**
2222  * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
2223  * @adapter: board private structure to initialize
2224  *
2225  * e1000_sw_init initializes the Adapter private data structure.
2226  * Fields are initialized based on PCI device information and
2227  * OS network device settings (MTU size).
2228  **/
2229 static int __devinit e1000_sw_init(struct e1000_adapter *adapter)
2230 {
2231         struct e1000_hw *hw = &adapter->hw;
2232         struct net_device *netdev = adapter->netdev;
2233
2234         adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN;
2235         adapter->rx_ps_bsize0 = 128;
2236         hw->mac.max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
2237         hw->mac.min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
2238
2239         adapter->tx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL);
2240         if (!adapter->tx_ring)
2241                 goto err;
2242
2243         adapter->rx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL);
2244         if (!adapter->rx_ring)
2245                 goto err;
2246
2247         spin_lock_init(&adapter->tx_queue_lock);
2248
2249         /* Explicitly disable IRQ since the NIC can be in any state. */
2250         atomic_set(&adapter->irq_sem, 0);
2251         e1000_irq_disable(adapter);
2252
2253         spin_lock_init(&adapter->stats_lock);
2254
2255         set_bit(__E1000_DOWN, &adapter->state);
2256         return 0;
2257
2258 err:
2259         ndev_err(netdev, "Unable to allocate memory for queues\n");
2260         kfree(adapter->rx_ring);
2261         kfree(adapter->tx_ring);
2262         return -ENOMEM;
2263 }
2264
2265 /**
2266  * e1000_open - Called when a network interface is made active
2267  * @netdev: network interface device structure
2268  *
2269  * Returns 0 on success, negative value on failure
2270  *
2271  * The open entry point is called when a network interface is made
2272  * active by the system (IFF_UP).  At this point all resources needed
2273  * for transmit and receive operations are allocated, the interrupt
2274  * handler is registered with the OS, the watchdog timer is started,
2275  * and the stack is notified that the interface is ready.
2276  **/
2277 static int e1000_open(struct net_device *netdev)
2278 {
2279         struct e1000_adapter *adapter = netdev_priv(netdev);
2280         struct e1000_hw *hw = &adapter->hw;
2281         int err;
2282
2283         /* disallow open during test */
2284         if (test_bit(__E1000_TESTING, &adapter->state))
2285                 return -EBUSY;
2286
2287         /* allocate transmit descriptors */
2288         err = e1000e_setup_tx_resources(adapter);
2289         if (err)
2290                 goto err_setup_tx;
2291
2292         /* allocate receive descriptors */
2293         err = e1000e_setup_rx_resources(adapter);
2294         if (err)
2295                 goto err_setup_rx;
2296
2297         e1000e_power_up_phy(adapter);
2298
2299         adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
2300         if ((adapter->hw.mng_cookie.status &
2301              E1000_MNG_DHCP_COOKIE_STATUS_VLAN))
2302                 e1000_update_mng_vlan(adapter);
2303
2304         /* If AMT is enabled, let the firmware know that the network
2305          * interface is now open */
2306         if ((adapter->flags & FLAG_HAS_AMT) &&
2307             e1000e_check_mng_mode(&adapter->hw))
2308                 e1000_get_hw_control(adapter);
2309
2310         /* before we allocate an interrupt, we must be ready to handle it.
2311          * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
2312          * as soon as we call pci_request_irq, so we have to setup our
2313          * clean_rx handler before we do so.  */
2314         e1000_configure(adapter);
2315
2316         err = e1000_request_irq(adapter);
2317         if (err)
2318                 goto err_req_irq;
2319
2320         /* From here on the code is the same as e1000e_up() */
2321         clear_bit(__E1000_DOWN, &adapter->state);
2322
2323         napi_enable(&adapter->napi);
2324
2325         e1000_irq_enable(adapter);
2326
2327         /* fire a link status change interrupt to start the watchdog */
2328         ew32(ICS, E1000_ICS_LSC);
2329
2330         return 0;
2331
2332 err_req_irq:
2333         e1000_release_hw_control(adapter);
2334         e1000_power_down_phy(adapter);
2335         e1000e_free_rx_resources(adapter);
2336 err_setup_rx:
2337         e1000e_free_tx_resources(adapter);
2338 err_setup_tx:
2339         e1000e_reset(adapter);
2340
2341         return err;
2342 }
2343
2344 /**
2345  * e1000_close - Disables a network interface
2346  * @netdev: network interface device structure
2347  *
2348  * Returns 0, this is not allowed to fail
2349  *
2350  * The close entry point is called when an interface is de-activated
2351  * by the OS.  The hardware is still under the drivers control, but
2352  * needs to be disabled.  A global MAC reset is issued to stop the
2353  * hardware, and all transmit and receive resources are freed.
2354  **/
2355 static int e1000_close(struct net_device *netdev)
2356 {
2357         struct e1000_adapter *adapter = netdev_priv(netdev);
2358
2359         WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
2360         e1000e_down(adapter);
2361         e1000_power_down_phy(adapter);
2362         e1000_free_irq(adapter);
2363
2364         e1000e_free_tx_resources(adapter);
2365         e1000e_free_rx_resources(adapter);
2366
2367         /* kill manageability vlan ID if supported, but not if a vlan with
2368          * the same ID is registered on the host OS (let 8021q kill it) */
2369         if ((adapter->hw.mng_cookie.status &
2370                           E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
2371              !(adapter->vlgrp &&
2372                vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id)))
2373                 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
2374
2375         /* If AMT is enabled, let the firmware know that the network
2376          * interface is now closed */
2377         if ((adapter->flags & FLAG_HAS_AMT) &&
2378             e1000e_check_mng_mode(&adapter->hw))
2379                 e1000_release_hw_control(adapter);
2380
2381         return 0;
2382 }
2383 /**
2384  * e1000_set_mac - Change the Ethernet Address of the NIC
2385  * @netdev: network interface device structure
2386  * @p: pointer to an address structure
2387  *
2388  * Returns 0 on success, negative on failure
2389  **/
2390 static int e1000_set_mac(struct net_device *netdev, void *p)
2391 {
2392         struct e1000_adapter *adapter = netdev_priv(netdev);
2393         struct sockaddr *addr = p;
2394
2395         if (!is_valid_ether_addr(addr->sa_data))
2396                 return -EADDRNOTAVAIL;
2397
2398         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2399         memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len);
2400
2401         e1000e_rar_set(&adapter->hw, adapter->hw.mac.addr, 0);
2402
2403         if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) {
2404                 /* activate the work around */
2405                 e1000e_set_laa_state_82571(&adapter->hw, 1);
2406
2407                 /* Hold a copy of the LAA in RAR[14] This is done so that
2408                  * between the time RAR[0] gets clobbered  and the time it
2409                  * gets fixed (in e1000_watchdog), the actual LAA is in one
2410                  * of the RARs and no incoming packets directed to this port
2411                  * are dropped. Eventually the LAA will be in RAR[0] and
2412                  * RAR[14] */
2413                 e1000e_rar_set(&adapter->hw,
2414                               adapter->hw.mac.addr,
2415                               adapter->hw.mac.rar_entry_count - 1);
2416         }
2417
2418         return 0;
2419 }
2420
2421 /* Need to wait a few seconds after link up to get diagnostic information from
2422  * the phy */
2423 static void e1000_update_phy_info(unsigned long data)
2424 {
2425         struct e1000_adapter *adapter = (struct e1000_adapter *) data;
2426         e1000_get_phy_info(&adapter->hw);
2427 }
2428
2429 /**
2430  * e1000e_update_stats - Update the board statistics counters
2431  * @adapter: board private structure
2432  **/
2433 void e1000e_update_stats(struct e1000_adapter *adapter)
2434 {
2435         struct e1000_hw *hw = &adapter->hw;
2436         struct pci_dev *pdev = adapter->pdev;
2437         unsigned long irq_flags;
2438         u16 phy_tmp;
2439
2440 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
2441
2442         /*
2443          * Prevent stats update while adapter is being reset, or if the pci
2444          * connection is down.
2445          */
2446         if (adapter->link_speed == 0)
2447                 return;
2448         if (pci_channel_offline(pdev))
2449                 return;
2450
2451         spin_lock_irqsave(&adapter->stats_lock, irq_flags);
2452
2453         /* these counters are modified from e1000_adjust_tbi_stats,
2454          * called from the interrupt context, so they must only
2455          * be written while holding adapter->stats_lock
2456          */
2457
2458         adapter->stats.crcerrs += er32(CRCERRS);
2459         adapter->stats.gprc += er32(GPRC);
2460         adapter->stats.gorcl += er32(GORCL);
2461         adapter->stats.gorch += er32(GORCH);
2462         adapter->stats.bprc += er32(BPRC);
2463         adapter->stats.mprc += er32(MPRC);
2464         adapter->stats.roc += er32(ROC);
2465
2466         if (adapter->flags & FLAG_HAS_STATS_PTC_PRC) {
2467                 adapter->stats.prc64 += er32(PRC64);
2468                 adapter->stats.prc127 += er32(PRC127);
2469                 adapter->stats.prc255 += er32(PRC255);
2470                 adapter->stats.prc511 += er32(PRC511);
2471                 adapter->stats.prc1023 += er32(PRC1023);
2472                 adapter->stats.prc1522 += er32(PRC1522);
2473                 adapter->stats.symerrs += er32(SYMERRS);
2474                 adapter->stats.sec += er32(SEC);
2475         }
2476
2477         adapter->stats.mpc += er32(MPC);
2478         adapter->stats.scc += er32(SCC);
2479         adapter->stats.ecol += er32(ECOL);
2480         adapter->stats.mcc += er32(MCC);
2481         adapter->stats.latecol += er32(LATECOL);
2482         adapter->stats.dc += er32(DC);
2483         adapter->stats.rlec += er32(RLEC);
2484         adapter->stats.xonrxc += er32(XONRXC);
2485         adapter->stats.xontxc += er32(XONTXC);
2486         adapter->stats.xoffrxc += er32(XOFFRXC);
2487         adapter->stats.xofftxc += er32(XOFFTXC);
2488         adapter->stats.fcruc += er32(FCRUC);
2489         adapter->stats.gptc += er32(GPTC);
2490         adapter->stats.gotcl += er32(GOTCL);
2491         adapter->stats.gotch += er32(GOTCH);
2492         adapter->stats.rnbc += er32(RNBC);
2493         adapter->stats.ruc += er32(RUC);
2494         adapter->stats.rfc += er32(RFC);
2495         adapter->stats.rjc += er32(RJC);
2496         adapter->stats.torl += er32(TORL);
2497         adapter->stats.torh += er32(TORH);
2498         adapter->stats.totl += er32(TOTL);
2499         adapter->stats.toth += er32(TOTH);
2500         adapter->stats.tpr += er32(TPR);
2501
2502         if (adapter->flags & FLAG_HAS_STATS_PTC_PRC) {
2503                 adapter->stats.ptc64 += er32(PTC64);
2504                 adapter->stats.ptc127 += er32(PTC127);
2505                 adapter->stats.ptc255 += er32(PTC255);
2506                 adapter->stats.ptc511 += er32(PTC511);
2507                 adapter->stats.ptc1023 += er32(PTC1023);
2508                 adapter->stats.ptc1522 += er32(PTC1522);
2509         }
2510
2511         adapter->stats.mptc += er32(MPTC);
2512         adapter->stats.bptc += er32(BPTC);
2513
2514         /* used for adaptive IFS */
2515
2516         hw->mac.tx_packet_delta = er32(TPT);
2517         adapter->stats.tpt += hw->mac.tx_packet_delta;
2518         hw->mac.collision_delta = er32(COLC);
2519         adapter->stats.colc += hw->mac.collision_delta;
2520
2521         adapter->stats.algnerrc += er32(ALGNERRC);
2522         adapter->stats.rxerrc += er32(RXERRC);
2523         adapter->stats.tncrs += er32(TNCRS);
2524         adapter->stats.cexterr += er32(CEXTERR);
2525         adapter->stats.tsctc += er32(TSCTC);
2526         adapter->stats.tsctfc += er32(TSCTFC);
2527
2528         adapter->stats.iac += er32(IAC);
2529
2530         if (adapter->flags & FLAG_HAS_STATS_ICR_ICT) {
2531                 adapter->stats.icrxoc += er32(ICRXOC);
2532                 adapter->stats.icrxptc += er32(ICRXPTC);
2533                 adapter->stats.icrxatc += er32(ICRXATC);
2534                 adapter->stats.ictxptc += er32(ICTXPTC);
2535                 adapter->stats.ictxatc += er32(ICTXATC);
2536                 adapter->stats.ictxqec += er32(ICTXQEC);
2537                 adapter->stats.ictxqmtc += er32(ICTXQMTC);
2538                 adapter->stats.icrxdmtc += er32(ICRXDMTC);
2539         }
2540
2541         /* Fill out the OS statistics structure */
2542         adapter->net_stats.multicast = adapter->stats.mprc;
2543         adapter->net_stats.collisions = adapter->stats.colc;
2544
2545         /* Rx Errors */
2546
2547         /* RLEC on some newer hardware can be incorrect so build
2548         * our own version based on RUC and ROC */
2549         adapter->net_stats.rx_errors = adapter->stats.rxerrc +
2550                 adapter->stats.crcerrs + adapter->stats.algnerrc +
2551                 adapter->stats.ruc + adapter->stats.roc +
2552                 adapter->stats.cexterr;
2553         adapter->net_stats.rx_length_errors = adapter->stats.ruc +
2554                                               adapter->stats.roc;
2555         adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs;
2556         adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc;
2557         adapter->net_stats.rx_missed_errors = adapter->stats.mpc;
2558
2559         /* Tx Errors */
2560         adapter->net_stats.tx_errors = adapter->stats.ecol +
2561                                        adapter->stats.latecol;
2562         adapter->net_stats.tx_aborted_errors = adapter->stats.ecol;
2563         adapter->net_stats.tx_window_errors = adapter->stats.latecol;
2564         adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs;
2565
2566         /* Tx Dropped needs to be maintained elsewhere */
2567
2568         /* Phy Stats */
2569         if (hw->media_type == e1000_media_type_copper) {
2570                 if ((adapter->link_speed == SPEED_1000) &&
2571                    (!e1e_rphy(hw, PHY_1000T_STATUS, &phy_tmp))) {
2572                         phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK;
2573                         adapter->phy_stats.idle_errors += phy_tmp;
2574                 }
2575         }
2576
2577         /* Management Stats */
2578         adapter->stats.mgptc += er32(MGTPTC);
2579         adapter->stats.mgprc += er32(MGTPRC);
2580         adapter->stats.mgpdc += er32(MGTPDC);
2581
2582         spin_unlock_irqrestore(&adapter->stats_lock, irq_flags);
2583 }
2584
2585 static void e1000_print_link_info(struct e1000_adapter *adapter)
2586 {
2587         struct net_device *netdev = adapter->netdev;
2588         struct e1000_hw *hw = &adapter->hw;
2589         u32 ctrl = er32(CTRL);
2590
2591         ndev_info(netdev,
2592                 "Link is Up %d Mbps %s, Flow Control: %s\n",
2593                 adapter->link_speed,
2594                 (adapter->link_duplex == FULL_DUPLEX) ?
2595                                 "Full Duplex" : "Half Duplex",
2596                 ((ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE)) ?
2597                                 "RX/TX" :
2598                 ((ctrl & E1000_CTRL_RFCE) ? "RX" :
2599                 ((ctrl & E1000_CTRL_TFCE) ? "TX" : "None" )));
2600 }
2601
2602 /**
2603  * e1000_watchdog - Timer Call-back
2604  * @data: pointer to adapter cast into an unsigned long
2605  **/
2606 static void e1000_watchdog(unsigned long data)
2607 {
2608         struct e1000_adapter *adapter = (struct e1000_adapter *) data;
2609
2610         /* Do the rest outside of interrupt context */
2611         schedule_work(&adapter->watchdog_task);
2612
2613         /* TODO: make this use queue_delayed_work() */
2614 }
2615
2616 static void e1000_watchdog_task(struct work_struct *work)
2617 {
2618         struct e1000_adapter *adapter = container_of(work,
2619                                         struct e1000_adapter, watchdog_task);
2620
2621         struct net_device *netdev = adapter->netdev;
2622         struct e1000_mac_info *mac = &adapter->hw.mac;
2623         struct e1000_ring *tx_ring = adapter->tx_ring;
2624         struct e1000_hw *hw = &adapter->hw;
2625         u32 link, tctl;
2626         s32 ret_val;
2627         int tx_pending = 0;
2628
2629         if ((netif_carrier_ok(netdev)) &&
2630             (er32(STATUS) & E1000_STATUS_LU))
2631                 goto link_up;
2632
2633         ret_val = mac->ops.check_for_link(hw);
2634         if ((ret_val == E1000_ERR_PHY) &&
2635             (adapter->hw.phy.type == e1000_phy_igp_3) &&
2636             (er32(CTRL) &
2637              E1000_PHY_CTRL_GBE_DISABLE)) {
2638                 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
2639                 ndev_info(netdev,
2640                         "Gigabit has been disabled, downgrading speed\n");
2641         }
2642
2643         if ((e1000e_enable_tx_pkt_filtering(hw)) &&
2644             (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id))
2645                 e1000_update_mng_vlan(adapter);
2646
2647         if ((adapter->hw.media_type == e1000_media_type_internal_serdes) &&
2648            !(er32(TXCW) & E1000_TXCW_ANE))
2649                 link = adapter->hw.mac.serdes_has_link;
2650         else
2651                 link = er32(STATUS) & E1000_STATUS_LU;
2652
2653         if (link) {
2654                 if (!netif_carrier_ok(netdev)) {
2655                         bool txb2b = 1;
2656                         mac->ops.get_link_up_info(&adapter->hw,
2657                                                    &adapter->link_speed,
2658                                                    &adapter->link_duplex);
2659                         e1000_print_link_info(adapter);
2660                         /* tweak tx_queue_len according to speed/duplex
2661                          * and adjust the timeout factor */
2662                         netdev->tx_queue_len = adapter->tx_queue_len;
2663                         adapter->tx_timeout_factor = 1;
2664                         switch (adapter->link_speed) {
2665                         case SPEED_10:
2666                                 txb2b = 0;
2667                                 netdev->tx_queue_len = 10;
2668                                 adapter->tx_timeout_factor = 14;
2669                                 break;
2670                         case SPEED_100:
2671                                 txb2b = 0;
2672                                 netdev->tx_queue_len = 100;
2673                                 /* maybe add some timeout factor ? */
2674                                 break;
2675                         }
2676
2677                         /* workaround: re-program speed mode bit after
2678                          * link-up event */
2679                         if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) &&
2680                             !txb2b) {
2681                                 u32 tarc0;
2682                                 tarc0 = er32(TARC0);
2683                                 tarc0 &= ~SPEED_MODE_BIT;
2684                                 ew32(TARC0, tarc0);
2685                         }
2686
2687                         /* disable TSO for pcie and 10/100 speeds, to avoid
2688                          * some hardware issues */
2689                         if (!(adapter->flags & FLAG_TSO_FORCE)) {
2690                                 switch (adapter->link_speed) {
2691                                 case SPEED_10:
2692                                 case SPEED_100:
2693                                         ndev_info(netdev,
2694                                         "10/100 speed: disabling TSO\n");
2695                                         netdev->features &= ~NETIF_F_TSO;
2696                                         netdev->features &= ~NETIF_F_TSO6;
2697                                         break;
2698                                 case SPEED_1000:
2699                                         netdev->features |= NETIF_F_TSO;
2700                                         netdev->features |= NETIF_F_TSO6;
2701                                         break;
2702                                 default:
2703                                         /* oops */
2704                                         break;
2705                                 }
2706                         }
2707
2708                         /* enable transmits in the hardware, need to do this
2709                          * after setting TARC0 */
2710                         tctl = er32(TCTL);
2711                         tctl |= E1000_TCTL_EN;
2712                         ew32(TCTL, tctl);
2713
2714                         netif_carrier_on(netdev);
2715                         netif_wake_queue(netdev);
2716
2717                         if (!test_bit(__E1000_DOWN, &adapter->state))
2718                                 mod_timer(&adapter->phy_info_timer,
2719                                           round_jiffies(jiffies + 2 * HZ));
2720                 } else {
2721                         /* make sure the receive unit is started */
2722                         if (adapter->flags & FLAG_RX_NEEDS_RESTART) {
2723                                 u32 rctl = er32(RCTL);
2724                                 ew32(RCTL, rctl |
2725                                                 E1000_RCTL_EN);
2726                         }
2727                 }
2728         } else {
2729                 if (netif_carrier_ok(netdev)) {
2730                         adapter->link_speed = 0;
2731                         adapter->link_duplex = 0;
2732                         ndev_info(netdev, "Link is Down\n");
2733                         netif_carrier_off(netdev);
2734                         netif_stop_queue(netdev);
2735                         if (!test_bit(__E1000_DOWN, &adapter->state))
2736                                 mod_timer(&adapter->phy_info_timer,
2737                                           round_jiffies(jiffies + 2 * HZ));
2738
2739                         if (adapter->flags & FLAG_RX_NEEDS_RESTART)
2740                                 schedule_work(&adapter->reset_task);
2741                 }
2742         }
2743
2744 link_up:
2745         e1000e_update_stats(adapter);
2746
2747         mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
2748         adapter->tpt_old = adapter->stats.tpt;
2749         mac->collision_delta = adapter->stats.colc - adapter->colc_old;
2750         adapter->colc_old = adapter->stats.colc;
2751
2752         adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old;
2753         adapter->gorcl_old = adapter->stats.gorcl;
2754         adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old;
2755         adapter->gotcl_old = adapter->stats.gotcl;
2756
2757         e1000e_update_adaptive(&adapter->hw);
2758
2759         if (!netif_carrier_ok(netdev)) {
2760                 tx_pending = (e1000_desc_unused(tx_ring) + 1 <
2761                                tx_ring->count);
2762                 if (tx_pending) {
2763                         /* We've lost link, so the controller stops DMA,
2764                          * but we've got queued Tx work that's never going
2765                          * to get done, so reset controller to flush Tx.
2766                          * (Do the reset outside of interrupt context). */
2767                         adapter->tx_timeout_count++;
2768                         schedule_work(&adapter->reset_task);
2769                 }
2770         }
2771
2772         /* Cause software interrupt to ensure rx ring is cleaned */
2773         ew32(ICS, E1000_ICS_RXDMT0);
2774
2775         /* Force detection of hung controller every watchdog period */
2776         adapter->detect_tx_hung = 1;
2777
2778         /* With 82571 controllers, LAA may be overwritten due to controller
2779          * reset from the other port. Set the appropriate LAA in RAR[0] */
2780         if (e1000e_get_laa_state_82571(hw))
2781                 e1000e_rar_set(hw, adapter->hw.mac.addr, 0);
2782
2783         /* Reset the timer */
2784         if (!test_bit(__E1000_DOWN, &adapter->state))
2785                 mod_timer(&adapter->watchdog_timer,
2786                           round_jiffies(jiffies + 2 * HZ));
2787 }
2788
2789 #define E1000_TX_FLAGS_CSUM             0x00000001
2790 #define E1000_TX_FLAGS_VLAN             0x00000002
2791 #define E1000_TX_FLAGS_TSO              0x00000004
2792 #define E1000_TX_FLAGS_IPV4             0x00000008
2793 #define E1000_TX_FLAGS_VLAN_MASK        0xffff0000
2794 #define E1000_TX_FLAGS_VLAN_SHIFT       16
2795
2796 static int e1000_tso(struct e1000_adapter *adapter,
2797                      struct sk_buff *skb)
2798 {
2799         struct e1000_ring *tx_ring = adapter->tx_ring;
2800         struct e1000_context_desc *context_desc;
2801         struct e1000_buffer *buffer_info;
2802         unsigned int i;
2803         u32 cmd_length = 0;
2804         u16 ipcse = 0, tucse, mss;
2805         u8 ipcss, ipcso, tucss, tucso, hdr_len;
2806         int err;
2807
2808         if (skb_is_gso(skb)) {
2809                 if (skb_header_cloned(skb)) {
2810                         err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
2811                         if (err)
2812                                 return err;
2813                 }
2814
2815                 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
2816                 mss = skb_shinfo(skb)->gso_size;
2817                 if (skb->protocol == htons(ETH_P_IP)) {
2818                         struct iphdr *iph = ip_hdr(skb);
2819                         iph->tot_len = 0;
2820                         iph->check = 0;
2821                         tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
2822                                                                  iph->daddr, 0,
2823                                                                  IPPROTO_TCP,
2824                                                                  0);
2825                         cmd_length = E1000_TXD_CMD_IP;
2826                         ipcse = skb_transport_offset(skb) - 1;
2827                 } else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) {
2828                         ipv6_hdr(skb)->payload_len = 0;
2829                         tcp_hdr(skb)->check =
2830                                 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
2831                                                  &ipv6_hdr(skb)->daddr,
2832                                                  0, IPPROTO_TCP, 0);
2833                         ipcse = 0;
2834                 }
2835                 ipcss = skb_network_offset(skb);
2836                 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data;
2837                 tucss = skb_transport_offset(skb);
2838                 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data;
2839                 tucse = 0;
2840
2841                 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
2842                                E1000_TXD_CMD_TCP | (skb->len - (hdr_len)));
2843
2844                 i = tx_ring->next_to_use;
2845                 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
2846                 buffer_info = &tx_ring->buffer_info[i];
2847
2848                 context_desc->lower_setup.ip_fields.ipcss  = ipcss;
2849                 context_desc->lower_setup.ip_fields.ipcso  = ipcso;
2850                 context_desc->lower_setup.ip_fields.ipcse  = cpu_to_le16(ipcse);
2851                 context_desc->upper_setup.tcp_fields.tucss = tucss;
2852                 context_desc->upper_setup.tcp_fields.tucso = tucso;
2853                 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse);
2854                 context_desc->tcp_seg_setup.fields.mss     = cpu_to_le16(mss);
2855                 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
2856                 context_desc->cmd_and_length = cpu_to_le32(cmd_length);
2857
2858                 buffer_info->time_stamp = jiffies;
2859                 buffer_info->next_to_watch = i;
2860
2861                 i++;
2862                 if (i == tx_ring->count)
2863                         i = 0;
2864                 tx_ring->next_to_use = i;
2865
2866                 return 1;
2867         }
2868
2869         return 0;
2870 }
2871
2872 static bool e1000_tx_csum(struct e1000_adapter *adapter, struct sk_buff *skb)
2873 {
2874         struct e1000_ring *tx_ring = adapter->tx_ring;
2875         struct e1000_context_desc *context_desc;
2876         struct e1000_buffer *buffer_info;
2877         unsigned int i;
2878         u8 css;
2879
2880         if (skb->ip_summed == CHECKSUM_PARTIAL) {
2881                 css = skb_transport_offset(skb);
2882
2883                 i = tx_ring->next_to_use;
2884                 buffer_info = &tx_ring->buffer_info[i];
2885                 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
2886
2887                 context_desc->lower_setup.ip_config = 0;
2888                 context_desc->upper_setup.tcp_fields.tucss = css;
2889                 context_desc->upper_setup.tcp_fields.tucso =
2890                                         css + skb->csum_offset;
2891                 context_desc->upper_setup.tcp_fields.tucse = 0;
2892                 context_desc->tcp_seg_setup.data = 0;
2893                 context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT);
2894
2895                 buffer_info->time_stamp = jiffies;
2896                 buffer_info->next_to_watch = i;
2897
2898                 i++;
2899                 if (i == tx_ring->count)
2900                         i = 0;
2901                 tx_ring->next_to_use = i;
2902
2903                 return 1;
2904         }
2905
2906         return 0;
2907 }
2908
2909 #define E1000_MAX_PER_TXD       8192
2910 #define E1000_MAX_TXD_PWR       12
2911
2912 static int e1000_tx_map(struct e1000_adapter *adapter,
2913                         struct sk_buff *skb, unsigned int first,
2914                         unsigned int max_per_txd, unsigned int nr_frags,
2915                         unsigned int mss)
2916 {
2917         struct e1000_ring *tx_ring = adapter->tx_ring;
2918         struct e1000_buffer *buffer_info;
2919         unsigned int len = skb->len - skb->data_len;
2920         unsigned int offset = 0, size, count = 0, i;
2921         unsigned int f;
2922
2923         i = tx_ring->next_to_use;
2924
2925         while (len) {
2926                 buffer_info = &tx_ring->buffer_info[i];
2927                 size = min(len, max_per_txd);
2928
2929                 /* Workaround for premature desc write-backs
2930                  * in TSO mode.  Append 4-byte sentinel desc */
2931                 if (mss && !nr_frags && size == len && size > 8)
2932                         size -= 4;
2933
2934                 buffer_info->length = size;
2935                 /* set time_stamp *before* dma to help avoid a possible race */
2936                 buffer_info->time_stamp = jiffies;
2937                 buffer_info->dma =
2938                         pci_map_single(adapter->pdev,
2939                                 skb->data + offset,
2940                                 size,
2941                                 PCI_DMA_TODEVICE);
2942                 if (pci_dma_mapping_error(buffer_info->dma)) {
2943                         dev_err(&adapter->pdev->dev, "TX DMA map failed\n");
2944                         adapter->tx_dma_failed++;
2945                         return -1;
2946                 }
2947                 buffer_info->next_to_watch = i;
2948
2949                 len -= size;
2950                 offset += size;
2951                 count++;
2952                 i++;
2953                 if (i == tx_ring->count)
2954                         i = 0;
2955         }
2956
2957         for (f = 0; f < nr_frags; f++) {
2958                 struct skb_frag_struct *frag;
2959
2960                 frag = &skb_shinfo(skb)->frags[f];
2961                 len = frag->size;
2962                 offset = frag->page_offset;
2963
2964                 while (len) {
2965                         buffer_info = &tx_ring->buffer_info[i];
2966                         size = min(len, max_per_txd);
2967                         /* Workaround for premature desc write-backs
2968                          * in TSO mode.  Append 4-byte sentinel desc */
2969                         if (mss && f == (nr_frags-1) && size == len && size > 8)
2970                                 size -= 4;
2971
2972                         buffer_info->length = size;
2973                         buffer_info->time_stamp = jiffies;
2974                         buffer_info->dma =
2975                                 pci_map_page(adapter->pdev,
2976                                         frag->page,
2977                                         offset,
2978                                         size,
2979                                         PCI_DMA_TODEVICE);
2980                         if (pci_dma_mapping_error(buffer_info->dma)) {
2981                                 dev_err(&adapter->pdev->dev,
2982                                         "TX DMA page map failed\n");
2983                                 adapter->tx_dma_failed++;
2984                                 return -1;
2985                         }
2986
2987                         buffer_info->next_to_watch = i;
2988
2989                         len -= size;
2990                         offset += size;
2991                         count++;
2992
2993                         i++;
2994                         if (i == tx_ring->count)
2995                                 i = 0;
2996                 }
2997         }
2998
2999         if (i == 0)
3000                 i = tx_ring->count - 1;
3001         else
3002                 i--;
3003
3004         tx_ring->buffer_info[i].skb = skb;
3005         tx_ring->buffer_info[first].next_to_watch = i;
3006
3007         return count;
3008 }
3009
3010 static void e1000_tx_queue(struct e1000_adapter *adapter,
3011                            int tx_flags, int count)
3012 {
3013         struct e1000_ring *tx_ring = adapter->tx_ring;
3014         struct e1000_tx_desc *tx_desc = NULL;
3015         struct e1000_buffer *buffer_info;
3016         u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
3017         unsigned int i;
3018
3019         if (tx_flags & E1000_TX_FLAGS_TSO) {
3020                 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
3021                              E1000_TXD_CMD_TSE;
3022                 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
3023
3024                 if (tx_flags & E1000_TX_FLAGS_IPV4)
3025                         txd_upper |= E1000_TXD_POPTS_IXSM << 8;
3026         }
3027
3028         if (tx_flags & E1000_TX_FLAGS_CSUM) {
3029                 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
3030                 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
3031         }
3032
3033         if (tx_flags & E1000_TX_FLAGS_VLAN) {
3034                 txd_lower |= E1000_TXD_CMD_VLE;
3035                 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
3036         }
3037
3038         i = tx_ring->next_to_use;
3039
3040         while (count--) {
3041                 buffer_info = &tx_ring->buffer_info[i];
3042                 tx_desc = E1000_TX_DESC(*tx_ring, i);
3043                 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
3044                 tx_desc->lower.data =
3045                         cpu_to_le32(txd_lower | buffer_info->length);
3046                 tx_desc->upper.data = cpu_to_le32(txd_upper);
3047
3048                 i++;
3049                 if (i == tx_ring->count)
3050                         i = 0;
3051         }
3052
3053         tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
3054
3055         /* Force memory writes to complete before letting h/w
3056          * know there are new descriptors to fetch.  (Only
3057          * applicable for weak-ordered memory model archs,
3058          * such as IA-64). */
3059         wmb();
3060
3061         tx_ring->next_to_use = i;
3062         writel(i, adapter->hw.hw_addr + tx_ring->tail);
3063         /* we need this if more than one processor can write to our tail
3064          * at a time, it synchronizes IO on IA64/Altix systems */
3065         mmiowb();
3066 }
3067
3068 #define MINIMUM_DHCP_PACKET_SIZE 282
3069 static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter,
3070                                     struct sk_buff *skb)
3071 {
3072         struct e1000_hw *hw =  &adapter->hw;
3073         u16 length, offset;
3074
3075         if (vlan_tx_tag_present(skb)) {
3076                 if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id)
3077                     && (adapter->hw.mng_cookie.status &
3078                         E1000_MNG_DHCP_COOKIE_STATUS_VLAN)))
3079                         return 0;
3080         }
3081
3082         if (skb->len <= MINIMUM_DHCP_PACKET_SIZE)
3083                 return 0;
3084
3085         if (((struct ethhdr *) skb->data)->h_proto != htons(ETH_P_IP))
3086                 return 0;
3087
3088         {
3089                 const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data+14);
3090                 struct udphdr *udp;
3091
3092                 if (ip->protocol != IPPROTO_UDP)
3093                         return 0;
3094
3095                 udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2));
3096                 if (ntohs(udp->dest) != 67)
3097                         return 0;
3098
3099                 offset = (u8 *)udp + 8 - skb->data;
3100                 length = skb->len - offset;
3101                 return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length);
3102         }
3103
3104         return 0;
3105 }
3106
3107 static int __e1000_maybe_stop_tx(struct net_device *netdev, int size)
3108 {
3109         struct e1000_adapter *adapter = netdev_priv(netdev);
3110
3111         netif_stop_queue(netdev);
3112         /* Herbert's original patch had:
3113          *  smp_mb__after_netif_stop_queue();
3114          * but since that doesn't exist yet, just open code it. */
3115         smp_mb();
3116
3117         /* We need to check again in a case another CPU has just
3118          * made room available. */
3119         if (e1000_desc_unused(adapter->tx_ring) < size)
3120                 return -EBUSY;
3121
3122         /* A reprieve! */
3123         netif_start_queue(netdev);
3124         ++adapter->restart_queue;
3125         return 0;
3126 }
3127
3128 static int e1000_maybe_stop_tx(struct net_device *netdev, int size)
3129 {
3130         struct e1000_adapter *adapter = netdev_priv(netdev);
3131
3132         if (e1000_desc_unused(adapter->tx_ring) >= size)
3133                 return 0;
3134         return __e1000_maybe_stop_tx(netdev, size);
3135 }
3136
3137 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
3138 static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
3139 {
3140         struct e1000_adapter *adapter = netdev_priv(netdev);
3141         struct e1000_ring *tx_ring = adapter->tx_ring;
3142         unsigned int first;
3143         unsigned int max_per_txd = E1000_MAX_PER_TXD;
3144         unsigned int max_txd_pwr = E1000_MAX_TXD_PWR;
3145         unsigned int tx_flags = 0;
3146         unsigned int len = skb->len - skb->data_len;
3147         unsigned long irq_flags;
3148         unsigned int nr_frags;
3149         unsigned int mss;
3150         int count = 0;
3151         int tso;
3152         unsigned int f;
3153
3154         if (test_bit(__E1000_DOWN, &adapter->state)) {
3155                 dev_kfree_skb_any(skb);
3156                 return NETDEV_TX_OK;
3157         }
3158
3159         if (skb->len <= 0) {
3160                 dev_kfree_skb_any(skb);
3161                 return NETDEV_TX_OK;
3162         }
3163
3164         mss = skb_shinfo(skb)->gso_size;
3165         /* The controller does a simple calculation to
3166          * make sure there is enough room in the FIFO before
3167          * initiating the DMA for each buffer.  The calc is:
3168          * 4 = ceil(buffer len/mss).  To make sure we don't
3169          * overrun the FIFO, adjust the max buffer len if mss
3170          * drops. */
3171         if (mss) {
3172                 u8 hdr_len;
3173                 max_per_txd = min(mss << 2, max_per_txd);
3174                 max_txd_pwr = fls(max_per_txd) - 1;
3175
3176                 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
3177                 * points to just header, pull a few bytes of payload from
3178                 * frags into skb->data */
3179                 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
3180                 if (skb->data_len && (hdr_len == len)) {
3181                         unsigned int pull_size;
3182
3183                         pull_size = min((unsigned int)4, skb->data_len);
3184                         if (!__pskb_pull_tail(skb, pull_size)) {
3185                                 ndev_err(netdev,
3186                                          "__pskb_pull_tail failed.\n");
3187                                 dev_kfree_skb_any(skb);
3188                                 return NETDEV_TX_OK;
3189                         }
3190                         len = skb->len - skb->data_len;
3191                 }
3192         }
3193
3194         /* reserve a descriptor for the offload context */
3195         if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL))
3196                 count++;
3197         count++;
3198
3199         count += TXD_USE_COUNT(len, max_txd_pwr);
3200
3201         nr_frags = skb_shinfo(skb)->nr_frags;
3202         for (f = 0; f < nr_frags; f++)
3203                 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size,
3204                                        max_txd_pwr);
3205
3206         if (adapter->hw.mac.tx_pkt_filtering)
3207                 e1000_transfer_dhcp_info(adapter, skb);
3208
3209         if (!spin_trylock_irqsave(&adapter->tx_queue_lock, irq_flags))
3210                 /* Collision - tell upper layer to requeue */
3211                 return NETDEV_TX_LOCKED;
3212
3213         /* need: count + 2 desc gap to keep tail from touching
3214          * head, otherwise try next time */
3215         if (e1000_maybe_stop_tx(netdev, count + 2)) {
3216                 spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags);
3217                 return NETDEV_TX_BUSY;
3218         }
3219
3220         if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
3221                 tx_flags |= E1000_TX_FLAGS_VLAN;
3222                 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
3223         }
3224
3225         first = tx_ring->next_to_use;
3226
3227         tso = e1000_tso(adapter, skb);
3228         if (tso < 0) {
3229                 dev_kfree_skb_any(skb);
3230                 spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags);
3231                 return NETDEV_TX_OK;
3232         }
3233
3234         if (tso)
3235                 tx_flags |= E1000_TX_FLAGS_TSO;
3236         else if (e1000_tx_csum(adapter, skb))
3237                 tx_flags |= E1000_TX_FLAGS_CSUM;
3238
3239         /* Old method was to assume IPv4 packet by default if TSO was enabled.
3240          * 82571 hardware supports TSO capabilities for IPv6 as well...
3241          * no longer assume, we must. */
3242         if (skb->protocol == htons(ETH_P_IP))
3243                 tx_flags |= E1000_TX_FLAGS_IPV4;
3244
3245         count = e1000_tx_map(adapter, skb, first, max_per_txd, nr_frags, mss);
3246         if (count < 0) {
3247                 /* handle pci_map_single() error in e1000_tx_map */
3248                 dev_kfree_skb_any(skb);
3249                 spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags);
3250                 return NETDEV_TX_OK;
3251         }
3252
3253         e1000_tx_queue(adapter, tx_flags, count);
3254
3255         netdev->trans_start = jiffies;
3256
3257         /* Make sure there is space in the ring for the next send. */
3258         e1000_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 2);
3259
3260         spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags);
3261         return NETDEV_TX_OK;
3262 }
3263
3264 /**
3265  * e1000_tx_timeout - Respond to a Tx Hang
3266  * @netdev: network interface device structure
3267  **/
3268 static void e1000_tx_timeout(struct net_device *netdev)
3269 {
3270         struct e1000_adapter *adapter = netdev_priv(netdev);
3271
3272         /* Do the reset outside of interrupt context */
3273         adapter->tx_timeout_count++;
3274         schedule_work(&adapter->reset_task);
3275 }
3276
3277 static void e1000_reset_task(struct work_struct *work)
3278 {
3279         struct e1000_adapter *adapter;
3280         adapter = container_of(work, struct e1000_adapter, reset_task);
3281
3282         e1000e_reinit_locked(adapter);
3283 }
3284
3285 /**
3286  * e1000_get_stats - Get System Network Statistics
3287  * @netdev: network interface device structure
3288  *
3289  * Returns the address of the device statistics structure.
3290  * The statistics are actually updated from the timer callback.
3291  **/
3292 static struct net_device_stats *e1000_get_stats(struct net_device *netdev)
3293 {
3294         struct e1000_adapter *adapter = netdev_priv(netdev);
3295
3296         /* only return the current stats */
3297         return &adapter->net_stats;
3298 }
3299
3300 /**
3301  * e1000_change_mtu - Change the Maximum Transfer Unit
3302  * @netdev: network interface device structure
3303  * @new_mtu: new value for maximum frame size
3304  *
3305  * Returns 0 on success, negative on failure
3306  **/
3307 static int e1000_change_mtu(struct net_device *netdev, int new_mtu)
3308 {
3309         struct e1000_adapter *adapter = netdev_priv(netdev);
3310         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
3311
3312         if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) ||
3313             (max_frame > MAX_JUMBO_FRAME_SIZE)) {
3314                 ndev_err(netdev, "Invalid MTU setting\n");
3315                 return -EINVAL;
3316         }
3317
3318         /* Jumbo frame size limits */
3319         if (max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) {
3320                 if (!(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) {
3321                         ndev_err(netdev, "Jumbo Frames not supported.\n");
3322                         return -EINVAL;
3323                 }
3324                 if (adapter->hw.phy.type == e1000_phy_ife) {
3325                         ndev_err(netdev, "Jumbo Frames not supported.\n");
3326                         return -EINVAL;
3327                 }
3328         }
3329
3330 #define MAX_STD_JUMBO_FRAME_SIZE 9234
3331         if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) {
3332                 ndev_err(netdev, "MTU > 9216 not supported.\n");
3333                 return -EINVAL;
3334         }
3335
3336         while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
3337                 msleep(1);
3338         /* e1000e_down has a dependency on max_frame_size */
3339         adapter->hw.mac.max_frame_size = max_frame;
3340         if (netif_running(netdev))
3341                 e1000e_down(adapter);
3342
3343         /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
3344          * means we reserve 2 more, this pushes us to allocate from the next
3345          * larger slab size.
3346          * i.e. RXBUFFER_2048 --> size-4096 slab */
3347
3348         if (max_frame <= 256)
3349                 adapter->rx_buffer_len = 256;
3350         else if (max_frame <= 512)
3351                 adapter->rx_buffer_len = 512;
3352         else if (max_frame <= 1024)
3353                 adapter->rx_buffer_len = 1024;
3354         else if (max_frame <= 2048)
3355                 adapter->rx_buffer_len = 2048;
3356         else
3357                 adapter->rx_buffer_len = 4096;
3358
3359         /* adjust allocation if LPE protects us, and we aren't using SBP */
3360         if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) ||
3361              (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN))
3362                 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN
3363                                          + ETH_FCS_LEN ;
3364
3365         ndev_info(netdev, "changing MTU from %d to %d\n",
3366                 netdev->mtu, new_mtu);
3367         netdev->mtu = new_mtu;
3368
3369         if (netif_running(netdev))
3370                 e1000e_up(adapter);
3371         else
3372                 e1000e_reset(adapter);
3373
3374         clear_bit(__E1000_RESETTING, &adapter->state);
3375
3376         return 0;
3377 }
3378
3379 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
3380                            int cmd)
3381 {
3382         struct e1000_adapter *adapter = netdev_priv(netdev);
3383         struct mii_ioctl_data *data = if_mii(ifr);
3384         unsigned long irq_flags;
3385
3386         if (adapter->hw.media_type != e1000_media_type_copper)
3387                 return -EOPNOTSUPP;
3388
3389         switch (cmd) {
3390         case SIOCGMIIPHY:
3391                 data->phy_id = adapter->hw.phy.addr;
3392                 break;
3393         case SIOCGMIIREG:
3394                 if (!capable(CAP_NET_ADMIN))
3395                         return -EPERM;
3396                 spin_lock_irqsave(&adapter->stats_lock, irq_flags);
3397                 if (e1e_rphy(&adapter->hw, data->reg_num & 0x1F,
3398                                    &data->val_out)) {
3399                         spin_unlock_irqrestore(&adapter->stats_lock, irq_flags);
3400                         return -EIO;
3401                 }
3402                 spin_unlock_irqrestore(&adapter->stats_lock, irq_flags);
3403                 break;
3404         case SIOCSMIIREG:
3405         default:
3406                 return -EOPNOTSUPP;
3407         }
3408         return 0;
3409 }
3410
3411 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
3412 {
3413         switch (cmd) {
3414         case SIOCGMIIPHY:
3415         case SIOCGMIIREG:
3416         case SIOCSMIIREG:
3417                 return e1000_mii_ioctl(netdev, ifr, cmd);
3418         default:
3419                 return -EOPNOTSUPP;
3420         }
3421 }
3422
3423 static int e1000_suspend(struct pci_dev *pdev, pm_message_t state)
3424 {
3425         struct net_device *netdev = pci_get_drvdata(pdev);
3426         struct e1000_adapter *adapter = netdev_priv(netdev);
3427         struct e1000_hw *hw = &adapter->hw;
3428         u32 ctrl, ctrl_ext, rctl, status;
3429         u32 wufc = adapter->wol;
3430         int retval = 0;
3431
3432         netif_device_detach(netdev);
3433
3434         if (netif_running(netdev)) {
3435                 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
3436                 e1000e_down(adapter);
3437                 e1000_free_irq(adapter);
3438         }
3439
3440         retval = pci_save_state(pdev);
3441         if (retval)
3442                 return retval;
3443
3444         status = er32(STATUS);
3445         if (status & E1000_STATUS_LU)
3446                 wufc &= ~E1000_WUFC_LNKC;
3447
3448         if (wufc) {
3449                 e1000_setup_rctl(adapter);
3450                 e1000_set_multi(netdev);
3451
3452                 /* turn on all-multi mode if wake on multicast is enabled */
3453                 if (wufc & E1000_WUFC_MC) {
3454                         rctl = er32(RCTL);
3455                         rctl |= E1000_RCTL_MPE;
3456                         ew32(RCTL, rctl);
3457                 }
3458
3459                 ctrl = er32(CTRL);
3460                 /* advertise wake from D3Cold */
3461                 #define E1000_CTRL_ADVD3WUC 0x00100000
3462                 /* phy power management enable */
3463                 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
3464                 ctrl |= E1000_CTRL_ADVD3WUC |
3465                         E1000_CTRL_EN_PHY_PWR_MGMT;
3466                 ew32(CTRL, ctrl);
3467
3468                 if (adapter->hw.media_type == e1000_media_type_fiber ||
3469                    adapter->hw.media_type == e1000_media_type_internal_serdes) {
3470                         /* keep the laser running in D3 */
3471                         ctrl_ext = er32(CTRL_EXT);
3472                         ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA;
3473                         ew32(CTRL_EXT, ctrl_ext);
3474                 }
3475
3476                 /* Allow time for pending master requests to run */
3477                 e1000e_disable_pcie_master(&adapter->hw);
3478
3479                 ew32(WUC, E1000_WUC_PME_EN);
3480                 ew32(WUFC, wufc);
3481                 pci_enable_wake(pdev, PCI_D3hot, 1);
3482                 pci_enable_wake(pdev, PCI_D3cold, 1);
3483         } else {
3484                 ew32(WUC, 0);
3485                 ew32(WUFC, 0);
3486                 pci_enable_wake(pdev, PCI_D3hot, 0);
3487                 pci_enable_wake(pdev, PCI_D3cold, 0);
3488         }
3489
3490         e1000_release_manageability(adapter);
3491
3492         /* make sure adapter isn't asleep if manageability is enabled */
3493         if (adapter->flags & FLAG_MNG_PT_ENABLED) {
3494                 pci_enable_wake(pdev, PCI_D3hot, 1);
3495                 pci_enable_wake(pdev, PCI_D3cold, 1);
3496         }
3497
3498         if (adapter->hw.phy.type == e1000_phy_igp_3)
3499                 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw);
3500
3501         /* Release control of h/w to f/w.  If f/w is AMT enabled, this
3502          * would have already happened in close and is redundant. */
3503         e1000_release_hw_control(adapter);
3504
3505         pci_disable_device(pdev);
3506
3507         pci_set_power_state(pdev, pci_choose_state(pdev, state));
3508
3509         return 0;
3510 }
3511
3512 static void e1000e_disable_l1aspm(struct pci_dev *pdev)
3513 {
3514         int pos;
3515         u32 cap;
3516         u16 val;
3517
3518         /*
3519          * 82573 workaround - disable L1 ASPM on mobile chipsets
3520          *
3521          * L1 ASPM on various mobile (ich7) chipsets do not behave properly
3522          * resulting in lost data or garbage information on the pci-e link
3523          * level. This could result in (false) bad EEPROM checksum errors,
3524          * long ping times (up to 2s) or even a system freeze/hang.
3525          *
3526          * Unfortunately this feature saves about 1W power consumption when
3527          * active.
3528          */
3529         pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
3530         pci_read_config_dword(pdev, pos + PCI_EXP_LNKCAP, &cap);
3531         pci_read_config_word(pdev, pos + PCI_EXP_LNKCTL, &val);
3532         if (val & 0x2) {
3533                 dev_warn(&pdev->dev, "Disabling L1 ASPM\n");
3534                 val &= ~0x2;
3535                 pci_write_config_word(pdev, pos + PCI_EXP_LNKCTL, val);
3536         }
3537 }
3538
3539 #ifdef CONFIG_PM
3540 static int e1000_resume(struct pci_dev *pdev)
3541 {
3542         struct net_device *netdev = pci_get_drvdata(pdev);
3543         struct e1000_adapter *adapter = netdev_priv(netdev);
3544         struct e1000_hw *hw = &adapter->hw;
3545         u32 err;
3546
3547         pci_set_power_state(pdev, PCI_D0);
3548         pci_restore_state(pdev);
3549         e1000e_disable_l1aspm(pdev);
3550         err = pci_enable_device(pdev);
3551         if (err) {
3552                 dev_err(&pdev->dev,
3553                         "Cannot enable PCI device from suspend\n");
3554                 return err;
3555         }
3556
3557         pci_set_master(pdev);
3558
3559         pci_enable_wake(pdev, PCI_D3hot, 0);
3560         pci_enable_wake(pdev, PCI_D3cold, 0);
3561
3562         if (netif_running(netdev)) {
3563                 err = e1000_request_irq(adapter);
3564                 if (err)
3565                         return err;
3566         }
3567
3568         e1000e_power_up_phy(adapter);
3569         e1000e_reset(adapter);
3570         ew32(WUS, ~0);
3571
3572         e1000_init_manageability(adapter);
3573
3574         if (netif_running(netdev))
3575                 e1000e_up(adapter);
3576
3577         netif_device_attach(netdev);
3578
3579         /* If the controller has AMT, do not set DRV_LOAD until the interface
3580          * is up.  For all other cases, let the f/w know that the h/w is now
3581          * under the control of the driver. */
3582         if (!(adapter->flags & FLAG_HAS_AMT) || !e1000e_check_mng_mode(&adapter->hw))
3583                 e1000_get_hw_control(adapter);
3584
3585         return 0;
3586 }
3587 #endif
3588
3589 static void e1000_shutdown(struct pci_dev *pdev)
3590 {
3591         e1000_suspend(pdev, PMSG_SUSPEND);
3592 }
3593
3594 #ifdef CONFIG_NET_POLL_CONTROLLER
3595 /*
3596  * Polling 'interrupt' - used by things like netconsole to send skbs
3597  * without having to re-enable interrupts. It's not called while
3598  * the interrupt routine is executing.
3599  */
3600 static void e1000_netpoll(struct net_device *netdev)
3601 {
3602         struct e1000_adapter *adapter = netdev_priv(netdev);
3603
3604         disable_irq(adapter->pdev->irq);
3605         e1000_intr(adapter->pdev->irq, netdev);
3606
3607         e1000_clean_tx_irq(adapter);
3608
3609         enable_irq(adapter->pdev->irq);
3610 }
3611 #endif
3612
3613 /**
3614  * e1000_io_error_detected - called when PCI error is detected
3615  * @pdev: Pointer to PCI device
3616  * @state: The current pci connection state
3617  *
3618  * This function is called after a PCI bus error affecting
3619  * this device has been detected.
3620  */
3621 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
3622                                                 pci_channel_state_t state)
3623 {
3624         struct net_device *netdev = pci_get_drvdata(pdev);
3625         struct e1000_adapter *adapter = netdev_priv(netdev);
3626
3627         netif_device_detach(netdev);
3628
3629         if (netif_running(netdev))
3630                 e1000e_down(adapter);
3631         pci_disable_device(pdev);
3632
3633         /* Request a slot slot reset. */
3634         return PCI_ERS_RESULT_NEED_RESET;
3635 }
3636
3637 /**
3638  * e1000_io_slot_reset - called after the pci bus has been reset.
3639  * @pdev: Pointer to PCI device
3640  *
3641  * Restart the card from scratch, as if from a cold-boot. Implementation
3642  * resembles the first-half of the e1000_resume routine.
3643  */
3644 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev)
3645 {
3646         struct net_device *netdev = pci_get_drvdata(pdev);
3647         struct e1000_adapter *adapter = netdev_priv(netdev);
3648         struct e1000_hw *hw = &adapter->hw;
3649
3650         e1000e_disable_l1aspm(pdev);
3651         if (pci_enable_device(pdev)) {
3652                 dev_err(&pdev->dev,
3653                         "Cannot re-enable PCI device after reset.\n");
3654                 return PCI_ERS_RESULT_DISCONNECT;
3655         }
3656         pci_set_master(pdev);
3657
3658         pci_enable_wake(pdev, PCI_D3hot, 0);
3659         pci_enable_wake(pdev, PCI_D3cold, 0);
3660
3661         e1000e_reset(adapter);
3662         ew32(WUS, ~0);
3663
3664         return PCI_ERS_RESULT_RECOVERED;
3665 }
3666
3667 /**
3668  * e1000_io_resume - called when traffic can start flowing again.
3669  * @pdev: Pointer to PCI device
3670  *
3671  * This callback is called when the error recovery driver tells us that
3672  * its OK to resume normal operation. Implementation resembles the
3673  * second-half of the e1000_resume routine.
3674  */
3675 static void e1000_io_resume(struct pci_dev *pdev)
3676 {
3677         struct net_device *netdev = pci_get_drvdata(pdev);
3678         struct e1000_adapter *adapter = netdev_priv(netdev);
3679
3680         e1000_init_manageability(adapter);
3681
3682         if (netif_running(netdev)) {
3683                 if (e1000e_up(adapter)) {
3684                         dev_err(&pdev->dev,
3685                                 "can't bring device back up after reset\n");
3686                         return;
3687                 }
3688         }
3689
3690         netif_device_attach(netdev);
3691
3692         /* If the controller has AMT, do not set DRV_LOAD until the interface
3693          * is up.  For all other cases, let the f/w know that the h/w is now
3694          * under the control of the driver. */
3695         if (!(adapter->flags & FLAG_HAS_AMT) ||
3696             !e1000e_check_mng_mode(&adapter->hw))
3697                 e1000_get_hw_control(adapter);
3698
3699 }
3700
3701 static void e1000_print_device_info(struct e1000_adapter *adapter)
3702 {
3703         struct e1000_hw *hw = &adapter->hw;
3704         struct net_device *netdev = adapter->netdev;
3705         u32 part_num;
3706
3707         /* print bus type/speed/width info */
3708         ndev_info(netdev, "(PCI Express:2.5GB/s:%s) "
3709                   "%02x:%02x:%02x:%02x:%02x:%02x\n",
3710                   /* bus width */
3711                  ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" :
3712                   "Width x1"),
3713                   /* MAC address */
3714                   netdev->dev_addr[0], netdev->dev_addr[1],
3715                   netdev->dev_addr[2], netdev->dev_addr[3],
3716                   netdev->dev_addr[4], netdev->dev_addr[5]);
3717         ndev_info(netdev, "Intel(R) PRO/%s Network Connection\n",
3718                   (hw->phy.type == e1000_phy_ife)
3719                    ? "10/100" : "1000");
3720         e1000e_read_part_num(hw, &part_num);
3721         ndev_info(netdev, "MAC: %d, PHY: %d, PBA No: %06x-%03x\n",
3722                   hw->mac.type, hw->phy.type,
3723                   (part_num >> 8), (part_num & 0xff));
3724 }
3725
3726 /**
3727  * e1000_probe - Device Initialization Routine
3728  * @pdev: PCI device information struct
3729  * @ent: entry in e1000_pci_tbl
3730  *
3731  * Returns 0 on success, negative on failure
3732  *
3733  * e1000_probe initializes an adapter identified by a pci_dev structure.
3734  * The OS initialization, configuring of the adapter private structure,
3735  * and a hardware reset occur.
3736  **/
3737 static int __devinit e1000_probe(struct pci_dev *pdev,
3738                                  const struct pci_device_id *ent)
3739 {
3740         struct net_device *netdev;
3741         struct e1000_adapter *adapter;
3742         struct e1000_hw *hw;
3743         const struct e1000_info *ei = e1000_info_tbl[ent->driver_data];
3744         unsigned long mmio_start, mmio_len;
3745         unsigned long flash_start, flash_len;
3746
3747         static int cards_found;
3748         int i, err, pci_using_dac;
3749         u16 eeprom_data = 0;
3750         u16 eeprom_apme_mask = E1000_EEPROM_APME;
3751
3752         e1000e_disable_l1aspm(pdev);
3753         err = pci_enable_device(pdev);
3754         if (err)
3755                 return err;
3756
3757         pci_using_dac = 0;
3758         err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
3759         if (!err) {
3760                 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
3761                 if (!err)
3762                         pci_using_dac = 1;
3763         } else {
3764                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
3765                 if (err) {
3766                         err = pci_set_consistent_dma_mask(pdev,
3767                                                           DMA_32BIT_MASK);
3768                         if (err) {
3769                                 dev_err(&pdev->dev, "No usable DMA "
3770                                         "configuration, aborting\n");
3771                                 goto err_dma;
3772                         }
3773                 }
3774         }
3775
3776         err = pci_request_regions(pdev, e1000e_driver_name);
3777         if (err)
3778                 goto err_pci_reg;
3779
3780         pci_set_master(pdev);
3781
3782         err = -ENOMEM;
3783         netdev = alloc_etherdev(sizeof(struct e1000_adapter));
3784         if (!netdev)
3785                 goto err_alloc_etherdev;
3786
3787         SET_NETDEV_DEV(netdev, &pdev->dev);
3788
3789         pci_set_drvdata(pdev, netdev);
3790         adapter = netdev_priv(netdev);
3791         hw = &adapter->hw;
3792         adapter->netdev = netdev;
3793         adapter->pdev = pdev;
3794         adapter->ei = ei;
3795         adapter->pba = ei->pba;
3796         adapter->flags = ei->flags;
3797         adapter->hw.adapter = adapter;
3798         adapter->hw.mac.type = ei->mac;
3799         adapter->msg_enable = (1 << NETIF_MSG_DRV | NETIF_MSG_PROBE) - 1;
3800
3801         mmio_start = pci_resource_start(pdev, 0);
3802         mmio_len = pci_resource_len(pdev, 0);
3803
3804         err = -EIO;
3805         adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
3806         if (!adapter->hw.hw_addr)
3807                 goto err_ioremap;
3808
3809         if ((adapter->flags & FLAG_HAS_FLASH) &&
3810             (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
3811                 flash_start = pci_resource_start(pdev, 1);
3812                 flash_len = pci_resource_len(pdev, 1);
3813                 adapter->hw.flash_address = ioremap(flash_start, flash_len);
3814                 if (!adapter->hw.flash_address)
3815                         goto err_flashmap;
3816         }
3817
3818         /* construct the net_device struct */
3819         netdev->open                    = &e1000_open;
3820         netdev->stop                    = &e1000_close;
3821         netdev->hard_start_xmit         = &e1000_xmit_frame;
3822         netdev->get_stats               = &e1000_get_stats;
3823         netdev->set_multicast_list      = &e1000_set_multi;
3824         netdev->set_mac_address         = &e1000_set_mac;
3825         netdev->change_mtu              = &e1000_change_mtu;
3826         netdev->do_ioctl                = &e1000_ioctl;
3827         e1000e_set_ethtool_ops(netdev);
3828         netdev->tx_timeout              = &e1000_tx_timeout;
3829         netdev->watchdog_timeo          = 5 * HZ;
3830         netif_napi_add(netdev, &adapter->napi, e1000_clean, 64);
3831         netdev->vlan_rx_register        = e1000_vlan_rx_register;
3832         netdev->vlan_rx_add_vid         = e1000_vlan_rx_add_vid;
3833         netdev->vlan_rx_kill_vid        = e1000_vlan_rx_kill_vid;
3834 #ifdef CONFIG_NET_POLL_CONTROLLER
3835         netdev->poll_controller         = e1000_netpoll;
3836 #endif
3837         strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
3838
3839         netdev->mem_start = mmio_start;
3840         netdev->mem_end = mmio_start + mmio_len;
3841
3842         adapter->bd_number = cards_found++;
3843
3844         /* setup adapter struct */
3845         err = e1000_sw_init(adapter);
3846         if (err)
3847                 goto err_sw_init;
3848
3849         err = -EIO;
3850
3851         memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops));
3852         memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops));
3853         memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops));
3854
3855         err = ei->get_invariants(adapter);
3856         if (err)
3857                 goto err_hw_init;
3858
3859         hw->mac.ops.get_bus_info(&adapter->hw);
3860
3861         adapter->hw.phy.wait_for_link = 0;
3862
3863         /* Copper options */
3864         if (adapter->hw.media_type == e1000_media_type_copper) {
3865                 adapter->hw.phy.mdix = AUTO_ALL_MODES;
3866                 adapter->hw.phy.disable_polarity_correction = 0;
3867                 adapter->hw.phy.ms_type = e1000_ms_hw_default;
3868         }
3869
3870         if (e1000_check_reset_block(&adapter->hw))
3871                 ndev_info(netdev,
3872                           "PHY reset is blocked due to SOL/IDER session.\n");
3873
3874         netdev->features = NETIF_F_SG |
3875                            NETIF_F_HW_CSUM |
3876                            NETIF_F_HW_VLAN_TX |
3877                            NETIF_F_HW_VLAN_RX;
3878
3879         if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER)
3880                 netdev->features |= NETIF_F_HW_VLAN_FILTER;
3881
3882         netdev->features |= NETIF_F_TSO;
3883         netdev->features |= NETIF_F_TSO6;
3884
3885         if (pci_using_dac)
3886                 netdev->features |= NETIF_F_HIGHDMA;
3887
3888         /* We should not be using LLTX anymore, but we are still TX faster with
3889          * it. */
3890         netdev->features |= NETIF_F_LLTX;
3891
3892         if (e1000e_enable_mng_pass_thru(&adapter->hw))
3893                 adapter->flags |= FLAG_MNG_PT_ENABLED;
3894
3895         /* before reading the NVM, reset the controller to
3896          * put the device in a known good starting state */
3897         adapter->hw.mac.ops.reset_hw(&adapter->hw);
3898
3899         /*
3900          * systems with ASPM and others may see the checksum fail on the first
3901          * attempt. Let's give it a few tries
3902          */
3903         for (i = 0;; i++) {
3904                 if (e1000_validate_nvm_checksum(&adapter->hw) >= 0)
3905                         break;
3906                 if (i == 2) {
3907                         ndev_err(netdev, "The NVM Checksum Is Not Valid\n");
3908                         err = -EIO;
3909                         goto err_eeprom;
3910                 }
3911         }
3912
3913         /* copy the MAC address out of the NVM */
3914         if (e1000e_read_mac_addr(&adapter->hw))
3915                 ndev_err(netdev, "NVM Read Error while reading MAC address\n");
3916
3917         memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len);
3918         memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len);
3919
3920         if (!is_valid_ether_addr(netdev->perm_addr)) {
3921                 ndev_err(netdev, "Invalid MAC Address: "
3922                          "%02x:%02x:%02x:%02x:%02x:%02x\n",
3923                          netdev->perm_addr[0], netdev->perm_addr[1],
3924                          netdev->perm_addr[2], netdev->perm_addr[3],
3925                          netdev->perm_addr[4], netdev->perm_addr[5]);
3926                 err = -EIO;
3927                 goto err_eeprom;
3928         }
3929
3930         init_timer(&adapter->watchdog_timer);
3931         adapter->watchdog_timer.function = &e1000_watchdog;
3932         adapter->watchdog_timer.data = (unsigned long) adapter;
3933
3934         init_timer(&adapter->phy_info_timer);
3935         adapter->phy_info_timer.function = &e1000_update_phy_info;
3936         adapter->phy_info_timer.data = (unsigned long) adapter;
3937
3938         INIT_WORK(&adapter->reset_task, e1000_reset_task);
3939         INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task);
3940
3941         e1000e_check_options(adapter);
3942
3943         /* Initialize link parameters. User can change them with ethtool */
3944         adapter->hw.mac.autoneg = 1;
3945         adapter->fc_autoneg = 1;
3946         adapter->hw.mac.original_fc = e1000_fc_default;
3947         adapter->hw.mac.fc = e1000_fc_default;
3948         adapter->hw.phy.autoneg_advertised = 0x2f;
3949
3950         /* ring size defaults */
3951         adapter->rx_ring->count = 256;
3952         adapter->tx_ring->count = 256;
3953
3954         /*
3955          * Initial Wake on LAN setting - If APM wake is enabled in
3956          * the EEPROM, enable the ACPI Magic Packet filter
3957          */
3958         if (adapter->flags & FLAG_APME_IN_WUC) {
3959                 /* APME bit in EEPROM is mapped to WUC.APME */
3960                 eeprom_data = er32(WUC);
3961                 eeprom_apme_mask = E1000_WUC_APME;
3962         } else if (adapter->flags & FLAG_APME_IN_CTRL3) {
3963                 if (adapter->flags & FLAG_APME_CHECK_PORT_B &&
3964                     (adapter->hw.bus.func == 1))
3965                         e1000_read_nvm(&adapter->hw,
3966                                 NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
3967                 else
3968                         e1000_read_nvm(&adapter->hw,
3969                                 NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
3970         }
3971
3972         /* fetch WoL from EEPROM */
3973         if (eeprom_data & eeprom_apme_mask)
3974                 adapter->eeprom_wol |= E1000_WUFC_MAG;
3975
3976         /*
3977          * now that we have the eeprom settings, apply the special cases
3978          * where the eeprom may be wrong or the board simply won't support
3979          * wake on lan on a particular port
3980          */
3981         if (!(adapter->flags & FLAG_HAS_WOL))
3982                 adapter->eeprom_wol = 0;
3983
3984         /* initialize the wol settings based on the eeprom settings */
3985         adapter->wol = adapter->eeprom_wol;
3986
3987         /* reset the hardware with the new settings */
3988         e1000e_reset(adapter);
3989
3990         /* If the controller has AMT, do not set DRV_LOAD until the interface
3991          * is up.  For all other cases, let the f/w know that the h/w is now
3992          * under the control of the driver. */
3993         if (!(adapter->flags & FLAG_HAS_AMT) ||
3994             !e1000e_check_mng_mode(&adapter->hw))
3995                 e1000_get_hw_control(adapter);
3996
3997         /* tell the stack to leave us alone until e1000_open() is called */
3998         netif_carrier_off(netdev);
3999         netif_stop_queue(netdev);
4000
4001         strcpy(netdev->name, "eth%d");
4002         err = register_netdev(netdev);
4003         if (err)
4004                 goto err_register;
4005
4006         e1000_print_device_info(adapter);
4007
4008         return 0;
4009
4010 err_register:
4011 err_hw_init:
4012         e1000_release_hw_control(adapter);
4013 err_eeprom:
4014         if (!e1000_check_reset_block(&adapter->hw))
4015                 e1000_phy_hw_reset(&adapter->hw);
4016
4017         if (adapter->hw.flash_address)
4018                 iounmap(adapter->hw.flash_address);
4019
4020 err_flashmap:
4021         kfree(adapter->tx_ring);
4022         kfree(adapter->rx_ring);
4023 err_sw_init:
4024         iounmap(adapter->hw.hw_addr);
4025 err_ioremap:
4026         free_netdev(netdev);
4027 err_alloc_etherdev:
4028         pci_release_regions(pdev);
4029 err_pci_reg:
4030 err_dma:
4031         pci_disable_device(pdev);
4032         return err;
4033 }
4034
4035 /**
4036  * e1000_remove - Device Removal Routine
4037  * @pdev: PCI device information struct
4038  *
4039  * e1000_remove is called by the PCI subsystem to alert the driver
4040  * that it should release a PCI device.  The could be caused by a
4041  * Hot-Plug event, or because the driver is going to be removed from
4042  * memory.
4043  **/
4044 static void __devexit e1000_remove(struct pci_dev *pdev)
4045 {
4046         struct net_device *netdev = pci_get_drvdata(pdev);
4047         struct e1000_adapter *adapter = netdev_priv(netdev);
4048
4049         /* flush_scheduled work may reschedule our watchdog task, so
4050          * explicitly disable watchdog tasks from being rescheduled  */
4051         set_bit(__E1000_DOWN, &adapter->state);
4052         del_timer_sync(&adapter->watchdog_timer);
4053         del_timer_sync(&adapter->phy_info_timer);
4054
4055         flush_scheduled_work();
4056
4057         e1000_release_manageability(adapter);
4058
4059         /* Release control of h/w to f/w.  If f/w is AMT enabled, this
4060          * would have already happened in close and is redundant. */
4061         e1000_release_hw_control(adapter);
4062
4063         unregister_netdev(netdev);
4064
4065         if (!e1000_check_reset_block(&adapter->hw))
4066                 e1000_phy_hw_reset(&adapter->hw);
4067
4068         kfree(adapter->tx_ring);
4069         kfree(adapter->rx_ring);
4070
4071         iounmap(adapter->hw.hw_addr);
4072         if (adapter->hw.flash_address)
4073                 iounmap(adapter->hw.flash_address);
4074         pci_release_regions(pdev);
4075
4076         free_netdev(netdev);
4077
4078         pci_disable_device(pdev);
4079 }
4080
4081 /* PCI Error Recovery (ERS) */
4082 static struct pci_error_handlers e1000_err_handler = {
4083         .error_detected = e1000_io_error_detected,
4084         .slot_reset = e1000_io_slot_reset,
4085         .resume = e1000_io_resume,
4086 };
4087
4088 static struct pci_device_id e1000_pci_tbl[] = {
4089         { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 },
4090         { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 },
4091         { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 },
4092         { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), board_82571 },
4093         { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 },
4094         { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 },
4095         { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_DUAL), board_82571 },
4096         { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_QUAD), board_82571 },
4097         { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571PT_QUAD_COPPER), board_82571 },
4098         { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 },
4099         { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 },
4100         { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 },
4101         { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 },
4102         { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 },
4103         { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 },
4104         { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 },
4105         { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT),
4106           board_80003es2lan },
4107         { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT),
4108           board_80003es2lan },
4109         { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT),
4110           board_80003es2lan },
4111         { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT),
4112           board_80003es2lan },
4113         { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan },
4114         { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan },
4115         { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan },
4116         { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan },
4117         { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan },
4118         { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan },
4119         { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan },
4120         { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan },
4121         { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan },
4122         { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan },
4123         { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan },
4124         { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan },
4125
4126         { }     /* terminate list */
4127 };
4128 MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
4129
4130 /* PCI Device API Driver */
4131 static struct pci_driver e1000_driver = {
4132         .name     = e1000e_driver_name,
4133         .id_table = e1000_pci_tbl,
4134         .probe    = e1000_probe,
4135         .remove   = __devexit_p(e1000_remove),
4136 #ifdef CONFIG_PM
4137         /* Power Managment Hooks */
4138         .suspend  = e1000_suspend,
4139         .resume   = e1000_resume,
4140 #endif
4141         .shutdown = e1000_shutdown,
4142         .err_handler = &e1000_err_handler
4143 };
4144
4145 /**
4146  * e1000_init_module - Driver Registration Routine
4147  *
4148  * e1000_init_module is the first routine called when the driver is
4149  * loaded. All it does is register with the PCI subsystem.
4150  **/
4151 static int __init e1000_init_module(void)
4152 {
4153         int ret;
4154         printk(KERN_INFO "%s: Intel(R) PRO/1000 Network Driver - %s\n",
4155                e1000e_driver_name, e1000e_driver_version);
4156         printk(KERN_INFO "%s: Copyright (c) 1999-2007 Intel Corporation.\n",
4157                e1000e_driver_name);
4158         ret = pci_register_driver(&e1000_driver);
4159
4160         return ret;
4161 }
4162 module_init(e1000_init_module);
4163
4164 /**
4165  * e1000_exit_module - Driver Exit Cleanup Routine
4166  *
4167  * e1000_exit_module is called just before the driver is removed
4168  * from memory.
4169  **/
4170 static void __exit e1000_exit_module(void)
4171 {
4172         pci_unregister_driver(&e1000_driver);
4173 }
4174 module_exit(e1000_exit_module);
4175
4176
4177 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
4178 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
4179 MODULE_LICENSE("GPL");
4180 MODULE_VERSION(DRV_VERSION);
4181
4182 /* e1000_main.c */