drivers/net/qlcnic/qlcnic_main.c

   1 /*
   2  * Copyright (C) 2009 - QLogic Corporation.
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  18  * MA  02111-1307, USA.
  19  *
  20  * The full GNU General Public License is included in this distribution
  21  * in the file called "COPYING".
  22  *
  23  */
  24
  25 #include <linux/slab.h>
  26 #include <linux/vmalloc.h>
  27 #include <linux/interrupt.h>
  28
  29 #include "qlcnic.h"
  30
  31 #include <linux/dma-mapping.h>
  32 #include <linux/if_vlan.h>
  33 #include <net/ip.h>
  34 #include <linux/ipv6.h>
  35 #include <linux/inetdevice.h>
  36 #include <linux/sysfs.h>
  37
  38 MODULE_DESCRIPTION("QLogic 10 GbE Converged Ethernet Driver");
  39 MODULE_LICENSE("GPL");
  40 MODULE_VERSION(QLCNIC_LINUX_VERSIONID);
  41 MODULE_FIRMWARE(QLCNIC_UNIFIED_ROMIMAGE_NAME);
  42
  43 char qlcnic_driver_name[] = "qlcnic";
  44 static const char qlcnic_driver_string[] = "QLogic Converged Ethernet Driver v"
  45     QLCNIC_LINUX_VERSIONID;
  46
  47 static int port_mode = QLCNIC_PORT_MODE_AUTO_NEG;
  48
  49 /* Default to restricted 1G auto-neg mode */
  50 static int wol_port_mode = 5;
  51
  52 static int use_msi = 1;
  53 module_param(use_msi, int, 0644);
  54 MODULE_PARM_DESC(use_msi, "MSI interrupt (0=disabled, 1=enabled");
  55
  56 static int use_msi_x = 1;
  57 module_param(use_msi_x, int, 0644);
  58 MODULE_PARM_DESC(use_msi_x, "MSI-X interrupt (0=disabled, 1=enabled");
  59
  60 static int auto_fw_reset = AUTO_FW_RESET_ENABLED;
  61 module_param(auto_fw_reset, int, 0644);
  62 MODULE_PARM_DESC(auto_fw_reset, "Auto firmware reset (0=disabled, 1=enabled");
  63
  64 static int __devinit qlcnic_probe(struct pci_dev *pdev,
  65                 const struct pci_device_id *ent);
  66 static void __devexit qlcnic_remove(struct pci_dev *pdev);
  67 static int qlcnic_open(struct net_device *netdev);
  68 static int qlcnic_close(struct net_device *netdev);
  69 static void qlcnic_tx_timeout(struct net_device *netdev);
  70 static void qlcnic_tx_timeout_task(struct work_struct *work);
  71 static void qlcnic_attach_work(struct work_struct *work);
  72 static void qlcnic_fwinit_work(struct work_struct *work);
  73 static void qlcnic_fw_poll_work(struct work_struct *work);
  74 static void qlcnic_schedule_work(struct qlcnic_adapter *adapter,
  75                 work_func_t func, int delay);
  76 static void qlcnic_cancel_fw_work(struct qlcnic_adapter *adapter);
  77 static int qlcnic_poll(struct napi_struct *napi, int budget);
  78 #ifdef CONFIG_NET_POLL_CONTROLLER
  79 static void qlcnic_poll_controller(struct net_device *netdev);
  80 #endif
  81
  82 static void qlcnic_create_sysfs_entries(struct qlcnic_adapter *adapter);
  83 static void qlcnic_remove_sysfs_entries(struct qlcnic_adapter *adapter);
  84 static void qlcnic_create_diag_entries(struct qlcnic_adapter *adapter);
  85 static void qlcnic_remove_diag_entries(struct qlcnic_adapter *adapter);
  86
  87 static void qlcnic_clr_all_drv_state(struct qlcnic_adapter *adapter);
  88 static int qlcnic_can_start_firmware(struct qlcnic_adapter *adapter);
  89
  90 static irqreturn_t qlcnic_tmp_intr(int irq, void *data);
  91 static irqreturn_t qlcnic_intr(int irq, void *data);
  92 static irqreturn_t qlcnic_msi_intr(int irq, void *data);
  93 static irqreturn_t qlcnic_msix_intr(int irq, void *data);
  94
  95 static struct net_device_stats *qlcnic_get_stats(struct net_device *netdev);
  96 static void qlcnic_config_indev_addr(struct net_device *dev, unsigned long);
  97
  98 /*  PCI Device ID Table  */
  99 #define ENTRY(device) \
 100         {PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, (device)), \
 101         .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
 102
 103 #define PCI_DEVICE_ID_QLOGIC_QLE824X  0x8020
 104
 105 static DEFINE_PCI_DEVICE_TABLE(qlcnic_pci_tbl) = {
 106         ENTRY(PCI_DEVICE_ID_QLOGIC_QLE824X),
 107         {0,}
 108 };
 109
 110 MODULE_DEVICE_TABLE(pci, qlcnic_pci_tbl);
 111
 112
 113 void
 114 qlcnic_update_cmd_producer(struct qlcnic_adapter *adapter,
 115                 struct qlcnic_host_tx_ring *tx_ring)
 116 {
 117         writel(tx_ring->producer, tx_ring->crb_cmd_producer);
 118
 119         if (qlcnic_tx_avail(tx_ring) <= TX_STOP_THRESH) {
 120                 netif_stop_queue(adapter->netdev);
 121                 smp_mb();
 122                 adapter->stats.xmit_off++;
 123         }
 124 }
 125
 126 static const u32 msi_tgt_status[8] = {
 127         ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
 128         ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
 129         ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
 130         ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
 131 };
 132
 133 static const
 134 struct qlcnic_legacy_intr_set legacy_intr[] = QLCNIC_LEGACY_INTR_CONFIG;
 135
 136 static inline void qlcnic_disable_int(struct qlcnic_host_sds_ring *sds_ring)
 137 {
 138         writel(0, sds_ring->crb_intr_mask);
 139 }
 140
 141 static inline void qlcnic_enable_int(struct qlcnic_host_sds_ring *sds_ring)
 142 {
 143         struct qlcnic_adapter *adapter = sds_ring->adapter;
 144
 145         writel(0x1, sds_ring->crb_intr_mask);
 146
 147         if (!QLCNIC_IS_MSI_FAMILY(adapter))
 148                 writel(0xfbff, adapter->tgt_mask_reg);
 149 }
 150
 151 static int
 152 qlcnic_alloc_sds_rings(struct qlcnic_recv_context *recv_ctx, int count)
 153 {
 154         int size = sizeof(struct qlcnic_host_sds_ring) * count;
 155
 156         recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
 157
 158         return (recv_ctx->sds_rings == NULL);
 159 }
 160
 161 static void
 162 qlcnic_free_sds_rings(struct qlcnic_recv_context *recv_ctx)
 163 {
 164         if (recv_ctx->sds_rings != NULL)
 165                 kfree(recv_ctx->sds_rings);
 166
 167         recv_ctx->sds_rings = NULL;
 168 }
 169
 170 static int
 171 qlcnic_napi_add(struct qlcnic_adapter *adapter, struct net_device *netdev)
 172 {
 173         int ring;
 174         struct qlcnic_host_sds_ring *sds_ring;
 175         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 176
 177         if (qlcnic_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
 178                 return -ENOMEM;
 179
 180         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 181                 sds_ring = &recv_ctx->sds_rings[ring];
 182                 netif_napi_add(netdev, &sds_ring->napi,
 183                                 qlcnic_poll, QLCNIC_NETDEV_WEIGHT);
 184         }
 185
 186         return 0;
 187 }
 188
 189 static void
 190 qlcnic_napi_del(struct qlcnic_adapter *adapter)
 191 {
 192         int ring;
 193         struct qlcnic_host_sds_ring *sds_ring;
 194         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 195
 196         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 197                 sds_ring = &recv_ctx->sds_rings[ring];
 198                 netif_napi_del(&sds_ring->napi);
 199         }
 200
 201         qlcnic_free_sds_rings(&adapter->recv_ctx);
 202 }
 203
 204 static void
 205 qlcnic_napi_enable(struct qlcnic_adapter *adapter)
 206 {
 207         int ring;
 208         struct qlcnic_host_sds_ring *sds_ring;
 209         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 210
 211         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 212                 sds_ring = &recv_ctx->sds_rings[ring];
 213                 napi_enable(&sds_ring->napi);
 214                 qlcnic_enable_int(sds_ring);
 215         }
 216 }
 217
 218 static void
 219 qlcnic_napi_disable(struct qlcnic_adapter *adapter)
 220 {
 221         int ring;
 222         struct qlcnic_host_sds_ring *sds_ring;
 223         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 224
 225         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 226                 sds_ring = &recv_ctx->sds_rings[ring];
 227                 qlcnic_disable_int(sds_ring);
 228                 napi_synchronize(&sds_ring->napi);
 229                 napi_disable(&sds_ring->napi);
 230         }
 231 }
 232
 233 static void qlcnic_clear_stats(struct qlcnic_adapter *adapter)
 234 {
 235         memset(&adapter->stats, 0, sizeof(adapter->stats));
 236         return;
 237 }
 238
 239 static int qlcnic_set_dma_mask(struct qlcnic_adapter *adapter)
 240 {
 241         struct pci_dev *pdev = adapter->pdev;
 242         u64 mask, cmask;
 243
 244         adapter->pci_using_dac = 0;
 245
 246         mask = DMA_BIT_MASK(39);
 247         cmask = mask;
 248
 249         if (pci_set_dma_mask(pdev, mask) == 0 &&
 250                         pci_set_consistent_dma_mask(pdev, cmask) == 0) {
 251                 adapter->pci_using_dac = 1;
 252                 return 0;
 253         }
 254
 255         return -EIO;
 256 }
 257
 258 /* Update addressable range if firmware supports it */
 259 static int
 260 qlcnic_update_dma_mask(struct qlcnic_adapter *adapter)
 261 {
 262         int change, shift, err;
 263         u64 mask, old_mask, old_cmask;
 264         struct pci_dev *pdev = adapter->pdev;
 265
 266         change = 0;
 267
 268         shift = QLCRD32(adapter, CRB_DMA_SHIFT);
 269         if (shift > 32)
 270                 return 0;
 271
 272         if (shift > 9)
 273                 change = 1;
 274
 275         if (change) {
 276                 old_mask = pdev->dma_mask;
 277                 old_cmask = pdev->dev.coherent_dma_mask;
 278
 279                 mask = DMA_BIT_MASK(32+shift);
 280
 281                 err = pci_set_dma_mask(pdev, mask);
 282                 if (err)
 283                         goto err_out;
 284
 285                 err = pci_set_consistent_dma_mask(pdev, mask);
 286                 if (err)
 287                         goto err_out;
 288                 dev_info(&pdev->dev, "using %d-bit dma mask\n", 32+shift);
 289         }
 290
 291         return 0;
 292
 293 err_out:
 294         pci_set_dma_mask(pdev, old_mask);
 295         pci_set_consistent_dma_mask(pdev, old_cmask);
 296         return err;
 297 }
 298
 299 static void qlcnic_set_port_mode(struct qlcnic_adapter *adapter)
 300 {
 301         u32 val, data;
 302
 303         val = adapter->ahw.board_type;
 304         if ((val == QLCNIC_BRDTYPE_P3_HMEZ) ||
 305                 (val == QLCNIC_BRDTYPE_P3_XG_LOM)) {
 306                 if (port_mode == QLCNIC_PORT_MODE_802_3_AP) {
 307                         data = QLCNIC_PORT_MODE_802_3_AP;
 308                         QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
 309                 } else if (port_mode == QLCNIC_PORT_MODE_XG) {
 310                         data = QLCNIC_PORT_MODE_XG;
 311                         QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
 312                 } else if (port_mode == QLCNIC_PORT_MODE_AUTO_NEG_1G) {
 313                         data = QLCNIC_PORT_MODE_AUTO_NEG_1G;
 314                         QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
 315                 } else if (port_mode == QLCNIC_PORT_MODE_AUTO_NEG_XG) {
 316                         data = QLCNIC_PORT_MODE_AUTO_NEG_XG;
 317                         QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
 318                 } else {
 319                         data = QLCNIC_PORT_MODE_AUTO_NEG;
 320                         QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
 321                 }
 322
 323                 if ((wol_port_mode != QLCNIC_PORT_MODE_802_3_AP) &&
 324                         (wol_port_mode != QLCNIC_PORT_MODE_XG) &&
 325                         (wol_port_mode != QLCNIC_PORT_MODE_AUTO_NEG_1G) &&
 326                         (wol_port_mode != QLCNIC_PORT_MODE_AUTO_NEG_XG)) {
 327                         wol_port_mode = QLCNIC_PORT_MODE_AUTO_NEG;
 328                 }
 329                 QLCWR32(adapter, QLCNIC_WOL_PORT_MODE, wol_port_mode);
 330         }
 331 }
 332
 333 static void qlcnic_set_msix_bit(struct pci_dev *pdev, int enable)
 334 {
 335         u32 control;
 336         int pos;
 337
 338         pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
 339         if (pos) {
 340                 pci_read_config_dword(pdev, pos, &control);
 341                 if (enable)
 342                         control |= PCI_MSIX_FLAGS_ENABLE;
 343                 else
 344                         control = 0;
 345                 pci_write_config_dword(pdev, pos, control);
 346         }
 347 }
 348
 349 static void qlcnic_init_msix_entries(struct qlcnic_adapter *adapter, int count)
 350 {
 351         int i;
 352
 353         for (i = 0; i < count; i++)
 354                 adapter->msix_entries[i].entry = i;
 355 }
 356
 357 static int
 358 qlcnic_read_mac_addr(struct qlcnic_adapter *adapter)
 359 {
 360         int i;
 361         unsigned char *p;
 362         u64 mac_addr;
 363         struct net_device *netdev = adapter->netdev;
 364         struct pci_dev *pdev = adapter->pdev;
 365
 366         if (qlcnic_get_mac_addr(adapter, &mac_addr) != 0)
 367                 return -EIO;
 368
 369         p = (unsigned char *)&mac_addr;
 370         for (i = 0; i < 6; i++)
 371                 netdev->dev_addr[i] = *(p + 5 - i);
 372
 373         memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
 374         memcpy(adapter->mac_addr, netdev->dev_addr, netdev->addr_len);
 375
 376         /* set station address */
 377
 378         if (!is_valid_ether_addr(netdev->perm_addr))
 379                 dev_warn(&pdev->dev, "Bad MAC address %pM.\n",
 380                                         netdev->dev_addr);
 381
 382         return 0;
 383 }
 384
 385 static int qlcnic_set_mac(struct net_device *netdev, void *p)
 386 {
 387         struct qlcnic_adapter *adapter = netdev_priv(netdev);
 388         struct sockaddr *addr = p;
 389
 390         if (!is_valid_ether_addr(addr->sa_data))
 391                 return -EINVAL;
 392
 393         if (netif_running(netdev)) {
 394                 netif_device_detach(netdev);
 395                 qlcnic_napi_disable(adapter);
 396         }
 397
 398         memcpy(adapter->mac_addr, addr->sa_data, netdev->addr_len);
 399         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
 400         qlcnic_set_multi(adapter->netdev);
 401
 402         if (netif_running(netdev)) {
 403                 netif_device_attach(netdev);
 404                 qlcnic_napi_enable(adapter);
 405         }
 406         return 0;
 407 }
 408
 409 static const struct net_device_ops qlcnic_netdev_ops = {
 410         .ndo_open          = qlcnic_open,
 411         .ndo_stop          = qlcnic_close,
 412         .ndo_start_xmit    = qlcnic_xmit_frame,
 413         .ndo_get_stats     = qlcnic_get_stats,
 414         .ndo_validate_addr = eth_validate_addr,
 415         .ndo_set_multicast_list = qlcnic_set_multi,
 416         .ndo_set_mac_address    = qlcnic_set_mac,
 417         .ndo_change_mtu    = qlcnic_change_mtu,
 418         .ndo_tx_timeout    = qlcnic_tx_timeout,
 419 #ifdef CONFIG_NET_POLL_CONTROLLER
 420         .ndo_poll_controller = qlcnic_poll_controller,
 421 #endif
 422 };
 423
 424 static void
 425 qlcnic_setup_intr(struct qlcnic_adapter *adapter)
 426 {
 427         const struct qlcnic_legacy_intr_set *legacy_intrp;
 428         struct pci_dev *pdev = adapter->pdev;
 429         int err, num_msix;
 430
 431         if (adapter->rss_supported) {
 432                 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
 433                         MSIX_ENTRIES_PER_ADAPTER : 2;
 434         } else
 435                 num_msix = 1;
 436
 437         adapter->max_sds_rings = 1;
 438
 439         adapter->flags &= ~(QLCNIC_MSI_ENABLED | QLCNIC_MSIX_ENABLED);
 440
 441         legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
 442
 443         adapter->int_vec_bit = legacy_intrp->int_vec_bit;
 444         adapter->tgt_status_reg = qlcnic_get_ioaddr(adapter,
 445                         legacy_intrp->tgt_status_reg);
 446         adapter->tgt_mask_reg = qlcnic_get_ioaddr(adapter,
 447                         legacy_intrp->tgt_mask_reg);
 448         adapter->isr_int_vec = qlcnic_get_ioaddr(adapter, ISR_INT_VECTOR);
 449
 450         adapter->crb_int_state_reg = qlcnic_get_ioaddr(adapter,
 451                         ISR_INT_STATE_REG);
 452
 453         qlcnic_set_msix_bit(pdev, 0);
 454
 455         if (adapter->msix_supported) {
 456
 457                 qlcnic_init_msix_entries(adapter, num_msix);
 458                 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
 459                 if (err == 0) {
 460                         adapter->flags |= QLCNIC_MSIX_ENABLED;
 461                         qlcnic_set_msix_bit(pdev, 1);
 462
 463                         if (adapter->rss_supported)
 464                                 adapter->max_sds_rings = num_msix;
 465
 466                         dev_info(&pdev->dev, "using msi-x interrupts\n");
 467                         return;
 468                 }
 469
 470                 if (err > 0)
 471                         pci_disable_msix(pdev);
 472
 473                 /* fall through for msi */
 474         }
 475
 476         if (use_msi && !pci_enable_msi(pdev)) {
 477                 adapter->flags |= QLCNIC_MSI_ENABLED;
 478                 adapter->tgt_status_reg = qlcnic_get_ioaddr(adapter,
 479                                 msi_tgt_status[adapter->ahw.pci_func]);
 480                 dev_info(&pdev->dev, "using msi interrupts\n");
 481                 adapter->msix_entries[0].vector = pdev->irq;
 482                 return;
 483         }
 484
 485         dev_info(&pdev->dev, "using legacy interrupts\n");
 486         adapter->msix_entries[0].vector = pdev->irq;
 487 }
 488
 489 static void
 490 qlcnic_teardown_intr(struct qlcnic_adapter *adapter)
 491 {
 492         if (adapter->flags & QLCNIC_MSIX_ENABLED)
 493                 pci_disable_msix(adapter->pdev);
 494         if (adapter->flags & QLCNIC_MSI_ENABLED)
 495                 pci_disable_msi(adapter->pdev);
 496 }
 497
 498 static void
 499 qlcnic_cleanup_pci_map(struct qlcnic_adapter *adapter)
 500 {
 501         if (adapter->ahw.pci_base0 != NULL)
 502                 iounmap(adapter->ahw.pci_base0);
 503 }
 504
 505 static int
 506 qlcnic_setup_pci_map(struct qlcnic_adapter *adapter)
 507 {
 508         void __iomem *mem_ptr0 = NULL;
 509         resource_size_t mem_base;
 510         unsigned long mem_len, pci_len0 = 0;
 511
 512         struct pci_dev *pdev = adapter->pdev;
 513         int pci_func = adapter->ahw.pci_func;
 514
 515         /*
 516          * Set the CRB window to invalid. If any register in window 0 is
 517          * accessed it should set the window to 0 and then reset it to 1.
 518          */
 519         adapter->ahw.crb_win = -1;
 520         adapter->ahw.ocm_win = -1;
 521
 522         /* remap phys address */
 523         mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
 524         mem_len = pci_resource_len(pdev, 0);
 525
 526         if (mem_len == QLCNIC_PCI_2MB_SIZE) {
 527
 528                 mem_ptr0 = pci_ioremap_bar(pdev, 0);
 529                 if (mem_ptr0 == NULL) {
 530                         dev_err(&pdev->dev, "failed to map PCI bar 0\n");
 531                         return -EIO;
 532                 }
 533                 pci_len0 = mem_len;
 534         } else {
 535                 return -EIO;
 536         }
 537
 538         dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
 539
 540         adapter->ahw.pci_base0 = mem_ptr0;
 541         adapter->ahw.pci_len0 = pci_len0;
 542
 543         adapter->ahw.ocm_win_crb = qlcnic_get_ioaddr(adapter,
 544                 QLCNIC_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(pci_func)));
 545
 546         return 0;
 547 }
 548
 549 static void get_brd_name(struct qlcnic_adapter *adapter, char *name)
 550 {
 551         struct pci_dev *pdev = adapter->pdev;
 552         int i, found = 0;
 553
 554         for (i = 0; i < NUM_SUPPORTED_BOARDS; ++i) {
 555                 if (qlcnic_boards[i].vendor == pdev->vendor &&
 556                         qlcnic_boards[i].device == pdev->device &&
 557                         qlcnic_boards[i].sub_vendor == pdev->subsystem_vendor &&
 558                         qlcnic_boards[i].sub_device == pdev->subsystem_device) {
 559                                 strcpy(name, qlcnic_boards[i].short_name);
 560                                 found = 1;
 561                                 break;
 562                 }
 563
 564         }
 565
 566         if (!found)
 567                 name = "Unknown";
 568 }
 569
 570 static void
 571 qlcnic_check_options(struct qlcnic_adapter *adapter)
 572 {
 573         u32 fw_major, fw_minor, fw_build;
 574         char brd_name[QLCNIC_MAX_BOARD_NAME_LEN];
 575         char serial_num[32];
 576         int i, offset, val;
 577         int *ptr32;
 578         struct pci_dev *pdev = adapter->pdev;
 579
 580         adapter->driver_mismatch = 0;
 581
 582         ptr32 = (int *)&serial_num;
 583         offset = QLCNIC_FW_SERIAL_NUM_OFFSET;
 584         for (i = 0; i < 8; i++) {
 585                 if (qlcnic_rom_fast_read(adapter, offset, &val) == -1) {
 586                         dev_err(&pdev->dev, "error reading board info\n");
 587                         adapter->driver_mismatch = 1;
 588                         return;
 589                 }
 590                 ptr32[i] = cpu_to_le32(val);
 591                 offset += sizeof(u32);
 592         }
 593
 594         fw_major = QLCRD32(adapter, QLCNIC_FW_VERSION_MAJOR);
 595         fw_minor = QLCRD32(adapter, QLCNIC_FW_VERSION_MINOR);
 596         fw_build = QLCRD32(adapter, QLCNIC_FW_VERSION_SUB);
 597
 598         adapter->fw_version = QLCNIC_VERSION_CODE(fw_major, fw_minor, fw_build);
 599
 600         if (adapter->portnum == 0) {
 601                 get_brd_name(adapter, brd_name);
 602
 603                 pr_info("%s: %s Board Chip rev 0x%x\n",
 604                                 module_name(THIS_MODULE),
 605                                 brd_name, adapter->ahw.revision_id);
 606         }
 607
 608         if (adapter->fw_version < QLCNIC_VERSION_CODE(3, 4, 216)) {
 609                 adapter->driver_mismatch = 1;
 610                 dev_warn(&pdev->dev, "firmware version %d.%d.%d unsupported\n",
 611                                 fw_major, fw_minor, fw_build);
 612                 return;
 613         }
 614
 615         i = QLCRD32(adapter, QLCNIC_SRE_MISC);
 616         adapter->ahw.cut_through = (i & 0x8000) ? 1 : 0;
 617
 618         dev_info(&pdev->dev, "firmware v%d.%d.%d [%s]\n",
 619                         fw_major, fw_minor, fw_build,
 620                         adapter->ahw.cut_through ? "cut-through" : "legacy");
 621
 622         if (adapter->fw_version >= QLCNIC_VERSION_CODE(4, 0, 222))
 623                 adapter->capabilities = QLCRD32(adapter, CRB_FW_CAPABILITIES_1);
 624
 625         adapter->flags &= ~QLCNIC_LRO_ENABLED;
 626
 627         if (adapter->ahw.port_type == QLCNIC_XGBE) {
 628                 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
 629                 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
 630         } else if (adapter->ahw.port_type == QLCNIC_GBE) {
 631                 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
 632                 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
 633         }
 634
 635         adapter->msix_supported = !!use_msi_x;
 636         adapter->rss_supported = !!use_msi_x;
 637
 638         adapter->num_txd = MAX_CMD_DESCRIPTORS;
 639
 640         adapter->num_lro_rxd = 0;
 641         adapter->max_rds_rings = 2;
 642 }
 643
 644 static int
 645 qlcnic_start_firmware(struct qlcnic_adapter *adapter)
 646 {
 647         int val, err, first_boot;
 648
 649         err = qlcnic_set_dma_mask(adapter);
 650         if (err)
 651                 return err;
 652
 653         err = qlcnic_can_start_firmware(adapter);
 654         if (err < 0)
 655                 return err;
 656         else if (!err)
 657                 goto wait_init;
 658
 659         first_boot = QLCRD32(adapter, QLCNIC_CAM_RAM(0x1fc));
 660         if (first_boot == 0x55555555)
 661                 /* This is the first boot after power up */
 662                 QLCWR32(adapter, QLCNIC_CAM_RAM(0x1fc), QLCNIC_BDINFO_MAGIC);
 663
 664         qlcnic_request_firmware(adapter);
 665
 666         err = qlcnic_need_fw_reset(adapter);
 667         if (err < 0)
 668                 goto err_out;
 669         if (err == 0)
 670                 goto wait_init;
 671
 672         if (first_boot != 0x55555555) {
 673                 QLCWR32(adapter, CRB_CMDPEG_STATE, 0);
 674                 qlcnic_pinit_from_rom(adapter);
 675                 msleep(1);
 676         }
 677
 678         QLCWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
 679         QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS1, 0);
 680         QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS2, 0);
 681
 682         qlcnic_set_port_mode(adapter);
 683
 684         err = qlcnic_load_firmware(adapter);
 685         if (err)
 686                 goto err_out;
 687
 688         qlcnic_release_firmware(adapter);
 689
 690         val = (_QLCNIC_LINUX_MAJOR << 16)
 691                 | ((_QLCNIC_LINUX_MINOR << 8))
 692                 | (_QLCNIC_LINUX_SUBVERSION);
 693         QLCWR32(adapter, CRB_DRIVER_VERSION, val);
 694
 695 wait_init:
 696         /* Handshake with the card before we register the devices. */
 697         err = qlcnic_phantom_init(adapter);
 698         if (err)
 699                 goto err_out;
 700
 701         QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_READY);
 702
 703         qlcnic_update_dma_mask(adapter);
 704
 705         qlcnic_check_options(adapter);
 706
 707         adapter->need_fw_reset = 0;
 708
 709         /* fall through and release firmware */
 710
 711 err_out:
 712         qlcnic_release_firmware(adapter);
 713         return err;
 714 }
 715
 716 static int
 717 qlcnic_request_irq(struct qlcnic_adapter *adapter)
 718 {
 719         irq_handler_t handler;
 720         struct qlcnic_host_sds_ring *sds_ring;
 721         int err, ring;
 722
 723         unsigned long flags = 0;
 724         struct net_device *netdev = adapter->netdev;
 725         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 726
 727         if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
 728                 handler = qlcnic_tmp_intr;
 729                 if (!QLCNIC_IS_MSI_FAMILY(adapter))
 730                         flags |= IRQF_SHARED;
 731
 732         } else {
 733                 if (adapter->flags & QLCNIC_MSIX_ENABLED)
 734                         handler = qlcnic_msix_intr;
 735                 else if (adapter->flags & QLCNIC_MSI_ENABLED)
 736                         handler = qlcnic_msi_intr;
 737                 else {
 738                         flags |= IRQF_SHARED;
 739                         handler = qlcnic_intr;
 740                 }
 741         }
 742         adapter->irq = netdev->irq;
 743
 744         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 745                 sds_ring = &recv_ctx->sds_rings[ring];
 746                 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
 747                 err = request_irq(sds_ring->irq, handler,
 748                                   flags, sds_ring->name, sds_ring);
 749                 if (err)
 750                         return err;
 751         }
 752
 753         return 0;
 754 }
 755
 756 static void
 757 qlcnic_free_irq(struct qlcnic_adapter *adapter)
 758 {
 759         int ring;
 760         struct qlcnic_host_sds_ring *sds_ring;
 761
 762         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 763
 764         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 765                 sds_ring = &recv_ctx->sds_rings[ring];
 766                 free_irq(sds_ring->irq, sds_ring);
 767         }
 768 }
 769
 770 static void
 771 qlcnic_init_coalesce_defaults(struct qlcnic_adapter *adapter)
 772 {
 773         adapter->coal.flags = QLCNIC_INTR_DEFAULT;
 774         adapter->coal.normal.data.rx_time_us =
 775                 QLCNIC_DEFAULT_INTR_COALESCE_RX_TIME_US;
 776         adapter->coal.normal.data.rx_packets =
 777                 QLCNIC_DEFAULT_INTR_COALESCE_RX_PACKETS;
 778         adapter->coal.normal.data.tx_time_us =
 779                 QLCNIC_DEFAULT_INTR_COALESCE_TX_TIME_US;
 780         adapter->coal.normal.data.tx_packets =
 781                 QLCNIC_DEFAULT_INTR_COALESCE_TX_PACKETS;
 782 }
 783
 784 static int
 785 __qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
 786 {
 787         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
 788                 return -EIO;
 789
 790         qlcnic_set_multi(netdev);
 791         qlcnic_fw_cmd_set_mtu(adapter, netdev->mtu);
 792
 793         adapter->ahw.linkup = 0;
 794
 795         if (adapter->max_sds_rings > 1)
 796                 qlcnic_config_rss(adapter, 1);
 797
 798         qlcnic_config_intr_coalesce(adapter);
 799
 800         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
 801                 qlcnic_config_hw_lro(adapter, QLCNIC_LRO_ENABLED);
 802
 803         qlcnic_napi_enable(adapter);
 804
 805         qlcnic_linkevent_request(adapter, 1);
 806
 807         set_bit(__QLCNIC_DEV_UP, &adapter->state);
 808         return 0;
 809 }
 810
 811 /* Usage: During resume and firmware recovery module.*/
 812
 813 static int
 814 qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
 815 {
 816         int err = 0;
 817
 818         rtnl_lock();
 819         if (netif_running(netdev))
 820                 err = __qlcnic_up(adapter, netdev);
 821         rtnl_unlock();
 822
 823         return err;
 824 }
 825
 826 static void
 827 __qlcnic_down(struct qlcnic_adapter *adapter, struct net_device *netdev)
 828 {
 829         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
 830                 return;
 831
 832         if (!test_and_clear_bit(__QLCNIC_DEV_UP, &adapter->state))
 833                 return;
 834
 835         smp_mb();
 836         spin_lock(&adapter->tx_clean_lock);
 837         netif_carrier_off(netdev);
 838         netif_tx_disable(netdev);
 839
 840         qlcnic_free_mac_list(adapter);
 841
 842         qlcnic_nic_set_promisc(adapter, QLCNIC_NIU_NON_PROMISC_MODE);
 843
 844         qlcnic_napi_disable(adapter);
 845
 846         qlcnic_release_tx_buffers(adapter);
 847         spin_unlock(&adapter->tx_clean_lock);
 848 }
 849
 850 /* Usage: During suspend and firmware recovery module */
 851
 852 static void
 853 qlcnic_down(struct qlcnic_adapter *adapter, struct net_device *netdev)
 854 {
 855         rtnl_lock();
 856         if (netif_running(netdev))
 857                 __qlcnic_down(adapter, netdev);
 858         rtnl_unlock();
 859
 860 }
 861
 862 static int
 863 qlcnic_attach(struct qlcnic_adapter *adapter)
 864 {
 865         struct net_device *netdev = adapter->netdev;
 866         struct pci_dev *pdev = adapter->pdev;
 867         int err, ring;
 868         struct qlcnic_host_rds_ring *rds_ring;
 869
 870         if (adapter->is_up == QLCNIC_ADAPTER_UP_MAGIC)
 871                 return 0;
 872
 873         err = qlcnic_init_firmware(adapter);
 874         if (err)
 875                 return err;
 876
 877         err = qlcnic_napi_add(adapter, netdev);
 878         if (err)
 879                 return err;
 880
 881         err = qlcnic_alloc_sw_resources(adapter);
 882         if (err) {
 883                 dev_err(&pdev->dev, "Error in setting sw resources\n");
 884                 return err;
 885         }
 886
 887         err = qlcnic_alloc_hw_resources(adapter);
 888         if (err) {
 889                 dev_err(&pdev->dev, "Error in setting hw resources\n");
 890                 goto err_out_free_sw;
 891         }
 892
 893
 894         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 895                 rds_ring = &adapter->recv_ctx.rds_rings[ring];
 896                 qlcnic_post_rx_buffers(adapter, ring, rds_ring);
 897         }
 898
 899         err = qlcnic_request_irq(adapter);
 900         if (err) {
 901                 dev_err(&pdev->dev, "failed to setup interrupt\n");
 902                 goto err_out_free_rxbuf;
 903         }
 904
 905         qlcnic_init_coalesce_defaults(adapter);
 906
 907         qlcnic_create_sysfs_entries(adapter);
 908
 909         adapter->is_up = QLCNIC_ADAPTER_UP_MAGIC;
 910         return 0;
 911
 912 err_out_free_rxbuf:
 913         qlcnic_release_rx_buffers(adapter);
 914         qlcnic_free_hw_resources(adapter);
 915 err_out_free_sw:
 916         qlcnic_free_sw_resources(adapter);
 917         return err;
 918 }
 919
 920 static void
 921 qlcnic_detach(struct qlcnic_adapter *adapter)
 922 {
 923         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
 924                 return;
 925
 926         qlcnic_remove_sysfs_entries(adapter);
 927
 928         qlcnic_free_hw_resources(adapter);
 929         qlcnic_release_rx_buffers(adapter);
 930         qlcnic_free_irq(adapter);
 931         qlcnic_napi_del(adapter);
 932         qlcnic_free_sw_resources(adapter);
 933
 934         adapter->is_up = 0;
 935 }
 936
 937 void qlcnic_diag_free_res(struct net_device *netdev, int max_sds_rings)
 938 {
 939         struct qlcnic_adapter *adapter = netdev_priv(netdev);
 940         struct qlcnic_host_sds_ring *sds_ring;
 941         int ring;
 942
 943         if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
 944                 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 945                         sds_ring = &adapter->recv_ctx.sds_rings[ring];
 946                         qlcnic_disable_int(sds_ring);
 947                 }
 948         }
 949
 950         qlcnic_detach(adapter);
 951
 952         adapter->diag_test = 0;
 953         adapter->max_sds_rings = max_sds_rings;
 954
 955         if (qlcnic_attach(adapter))
 956                 goto out;
 957
 958         if (netif_running(netdev))
 959                 __qlcnic_up(adapter, netdev);
 960 out:
 961         netif_device_attach(netdev);
 962 }
 963
 964 int qlcnic_diag_alloc_res(struct net_device *netdev, int test)
 965 {
 966         struct qlcnic_adapter *adapter = netdev_priv(netdev);
 967         struct qlcnic_host_sds_ring *sds_ring;
 968         int ring;
 969         int ret;
 970
 971         netif_device_detach(netdev);
 972
 973         if (netif_running(netdev))
 974                 __qlcnic_down(adapter, netdev);
 975
 976         qlcnic_detach(adapter);
 977
 978         adapter->max_sds_rings = 1;
 979         adapter->diag_test = test;
 980
 981         ret = qlcnic_attach(adapter);
 982         if (ret) {
 983                 netif_device_attach(netdev);
 984                 return ret;
 985         }
 986
 987         if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
 988                 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 989                         sds_ring = &adapter->recv_ctx.sds_rings[ring];
 990                         qlcnic_enable_int(sds_ring);
 991                 }
 992         }
 993
 994         return 0;
 995 }
 996
 997 int
 998 qlcnic_reset_context(struct qlcnic_adapter *adapter)
 999 {
1000         int err = 0;
1001         struct net_device *netdev = adapter->netdev;
1002
1003         if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
1004                 return -EBUSY;
1005
1006         if (adapter->is_up == QLCNIC_ADAPTER_UP_MAGIC) {
1007
1008                 netif_device_detach(netdev);
1009
1010                 if (netif_running(netdev))
1011                         __qlcnic_down(adapter, netdev);
1012
1013                 qlcnic_detach(adapter);
1014
1015                 if (netif_running(netdev)) {
1016                         err = qlcnic_attach(adapter);
1017                         if (!err)
1018                                 __qlcnic_up(adapter, netdev);
1019                 }
1020
1021                 netif_device_attach(netdev);
1022         }
1023
1024         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1025         return err;
1026 }
1027
1028 static int
1029 qlcnic_setup_netdev(struct qlcnic_adapter *adapter,
1030                 struct net_device *netdev)
1031 {
1032         int err;
1033         struct pci_dev *pdev = adapter->pdev;
1034
1035         adapter->rx_csum = 1;
1036         adapter->mc_enabled = 0;
1037         adapter->max_mc_count = 38;
1038
1039         netdev->netdev_ops         = &qlcnic_netdev_ops;
1040         netdev->watchdog_timeo     = 2*HZ;
1041
1042         qlcnic_change_mtu(netdev, netdev->mtu);
1043
1044         SET_ETHTOOL_OPS(netdev, &qlcnic_ethtool_ops);
1045
1046         netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1047         netdev->features |= (NETIF_F_GRO);
1048         netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1049
1050         netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1051         netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1052
1053         if (adapter->pci_using_dac) {
1054                 netdev->features |= NETIF_F_HIGHDMA;
1055                 netdev->vlan_features |= NETIF_F_HIGHDMA;
1056         }
1057
1058         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_FVLANTX)
1059                 netdev->features |= (NETIF_F_HW_VLAN_TX);
1060
1061         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
1062                 netdev->features |= NETIF_F_LRO;
1063
1064         netdev->irq = adapter->msix_entries[0].vector;
1065
1066         INIT_WORK(&adapter->tx_timeout_task, qlcnic_tx_timeout_task);
1067
1068         if (qlcnic_read_mac_addr(adapter))
1069                 dev_warn(&pdev->dev, "failed to read mac addr\n");
1070
1071         netif_carrier_off(netdev);
1072         netif_stop_queue(netdev);
1073
1074         err = register_netdev(netdev);
1075         if (err) {
1076                 dev_err(&pdev->dev, "failed to register net device\n");
1077                 return err;
1078         }
1079
1080         return 0;
1081 }
1082
1083 static int __devinit
1084 qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1085 {
1086         struct net_device *netdev = NULL;
1087         struct qlcnic_adapter *adapter = NULL;
1088         int err;
1089         int pci_func_id = PCI_FUNC(pdev->devfn);
1090         uint8_t revision_id;
1091
1092         err = pci_enable_device(pdev);
1093         if (err)
1094                 return err;
1095
1096         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1097                 err = -ENODEV;
1098                 goto err_out_disable_pdev;
1099         }
1100
1101         err = pci_request_regions(pdev, qlcnic_driver_name);
1102         if (err)
1103                 goto err_out_disable_pdev;
1104
1105         pci_set_master(pdev);
1106
1107         netdev = alloc_etherdev(sizeof(struct qlcnic_adapter));
1108         if (!netdev) {
1109                 dev_err(&pdev->dev, "failed to allocate net_device\n");
1110                 err = -ENOMEM;
1111                 goto err_out_free_res;
1112         }
1113
1114         SET_NETDEV_DEV(netdev, &pdev->dev);
1115
1116         adapter = netdev_priv(netdev);
1117         adapter->netdev  = netdev;
1118         adapter->pdev    = pdev;
1119         adapter->ahw.pci_func  = pci_func_id;
1120
1121         revision_id = pdev->revision;
1122         adapter->ahw.revision_id = revision_id;
1123
1124         rwlock_init(&adapter->ahw.crb_lock);
1125         mutex_init(&adapter->ahw.mem_lock);
1126
1127         spin_lock_init(&adapter->tx_clean_lock);
1128         INIT_LIST_HEAD(&adapter->mac_list);
1129
1130         err = qlcnic_setup_pci_map(adapter);
1131         if (err)
1132                 goto err_out_free_netdev;
1133
1134         /* This will be reset for mezz cards  */
1135         adapter->portnum = pci_func_id;
1136
1137         err = qlcnic_get_board_info(adapter);
1138         if (err) {
1139                 dev_err(&pdev->dev, "Error getting board config info.\n");
1140                 goto err_out_iounmap;
1141         }
1142
1143         qlcnic_setup_idc_param(adapter);
1144
1145         err = qlcnic_start_firmware(adapter);
1146         if (err)
1147                 goto err_out_decr_ref;
1148
1149         /*
1150          * See if the firmware gave us a virtual-physical port mapping.
1151          */
1152         adapter->physical_port = adapter->portnum;
1153
1154         qlcnic_clear_stats(adapter);
1155
1156         qlcnic_setup_intr(adapter);
1157
1158         err = qlcnic_setup_netdev(adapter, netdev);
1159         if (err)
1160                 goto err_out_disable_msi;
1161
1162         pci_set_drvdata(pdev, adapter);
1163
1164         qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
1165
1166         switch (adapter->ahw.port_type) {
1167         case QLCNIC_GBE:
1168                 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1169                                 adapter->netdev->name);
1170                 break;
1171         case QLCNIC_XGBE:
1172                 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1173                                 adapter->netdev->name);
1174                 break;
1175         }
1176
1177         qlcnic_create_diag_entries(adapter);
1178
1179         return 0;
1180
1181 err_out_disable_msi:
1182         qlcnic_teardown_intr(adapter);
1183
1184 err_out_decr_ref:
1185         qlcnic_clr_all_drv_state(adapter);
1186
1187 err_out_iounmap:
1188         qlcnic_cleanup_pci_map(adapter);
1189
1190 err_out_free_netdev:
1191         free_netdev(netdev);
1192
1193 err_out_free_res:
1194         pci_release_regions(pdev);
1195
1196 err_out_disable_pdev:
1197         pci_set_drvdata(pdev, NULL);
1198         pci_disable_device(pdev);
1199         return err;
1200 }
1201
1202 static void __devexit qlcnic_remove(struct pci_dev *pdev)
1203 {
1204         struct qlcnic_adapter *adapter;
1205         struct net_device *netdev;
1206
1207         adapter = pci_get_drvdata(pdev);
1208         if (adapter == NULL)
1209                 return;
1210
1211         netdev = adapter->netdev;
1212
1213         qlcnic_cancel_fw_work(adapter);
1214
1215         unregister_netdev(netdev);
1216
1217         cancel_work_sync(&adapter->tx_timeout_task);
1218
1219         qlcnic_detach(adapter);
1220
1221         qlcnic_clr_all_drv_state(adapter);
1222
1223         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1224
1225         qlcnic_teardown_intr(adapter);
1226
1227         qlcnic_remove_diag_entries(adapter);
1228
1229         qlcnic_cleanup_pci_map(adapter);
1230
1231         qlcnic_release_firmware(adapter);
1232
1233         pci_release_regions(pdev);
1234         pci_disable_device(pdev);
1235         pci_set_drvdata(pdev, NULL);
1236
1237         free_netdev(netdev);
1238 }
1239 static int __qlcnic_shutdown(struct pci_dev *pdev)
1240 {
1241         struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
1242         struct net_device *netdev = adapter->netdev;
1243         int retval;
1244
1245         netif_device_detach(netdev);
1246
1247         qlcnic_cancel_fw_work(adapter);
1248
1249         if (netif_running(netdev))
1250                 qlcnic_down(adapter, netdev);
1251
1252         cancel_work_sync(&adapter->tx_timeout_task);
1253
1254         qlcnic_detach(adapter);
1255
1256         qlcnic_clr_all_drv_state(adapter);
1257
1258         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1259
1260         retval = pci_save_state(pdev);
1261         if (retval)
1262                 return retval;
1263
1264         if (qlcnic_wol_supported(adapter)) {
1265                 pci_enable_wake(pdev, PCI_D3cold, 1);
1266                 pci_enable_wake(pdev, PCI_D3hot, 1);
1267         }
1268
1269         return 0;
1270 }
1271
1272 static void qlcnic_shutdown(struct pci_dev *pdev)
1273 {
1274         if (__qlcnic_shutdown(pdev))
1275                 return;
1276
1277         pci_disable_device(pdev);
1278 }
1279
1280 #ifdef CONFIG_PM
1281 static int
1282 qlcnic_suspend(struct pci_dev *pdev, pm_message_t state)
1283 {
1284         int retval;
1285
1286         retval = __qlcnic_shutdown(pdev);
1287         if (retval)
1288                 return retval;
1289
1290         pci_set_power_state(pdev, pci_choose_state(pdev, state));
1291         return 0;
1292 }
1293
1294 static int
1295 qlcnic_resume(struct pci_dev *pdev)
1296 {
1297         struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
1298         struct net_device *netdev = adapter->netdev;
1299         int err;
1300
1301         err = pci_enable_device(pdev);
1302         if (err)
1303                 return err;
1304
1305         pci_set_power_state(pdev, PCI_D0);
1306         pci_set_master(pdev);
1307         pci_restore_state(pdev);
1308
1309         adapter->ahw.crb_win = -1;
1310         adapter->ahw.ocm_win = -1;
1311
1312         err = qlcnic_start_firmware(adapter);
1313         if (err) {
1314                 dev_err(&pdev->dev, "failed to start firmware\n");
1315                 return err;
1316         }
1317
1318         if (netif_running(netdev)) {
1319                 err = qlcnic_attach(adapter);
1320                 if (err)
1321                         goto err_out;
1322
1323                 err = qlcnic_up(adapter, netdev);
1324                 if (err)
1325                         goto err_out_detach;
1326
1327
1328                 qlcnic_config_indev_addr(netdev, NETDEV_UP);
1329         }
1330
1331         netif_device_attach(netdev);
1332         qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
1333         return 0;
1334
1335 err_out_detach:
1336         qlcnic_detach(adapter);
1337 err_out:
1338         qlcnic_clr_all_drv_state(adapter);
1339         netif_device_attach(netdev);
1340         return err;
1341 }
1342 #endif
1343
1344 static int qlcnic_open(struct net_device *netdev)
1345 {
1346         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1347         int err;
1348
1349         if (adapter->driver_mismatch)
1350                 return -EIO;
1351
1352         err = qlcnic_attach(adapter);
1353         if (err)
1354                 return err;
1355
1356         err = __qlcnic_up(adapter, netdev);
1357         if (err)
1358                 goto err_out;
1359
1360         netif_start_queue(netdev);
1361
1362         return 0;
1363
1364 err_out:
1365         qlcnic_detach(adapter);
1366         return err;
1367 }
1368
1369 /*
1370  * qlcnic_close - Disables a network interface entry point
1371  */
1372 static int qlcnic_close(struct net_device *netdev)
1373 {
1374         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1375
1376         __qlcnic_down(adapter, netdev);
1377         return 0;
1378 }
1379
1380 static void
1381 qlcnic_tso_check(struct net_device *netdev,
1382                 struct qlcnic_host_tx_ring *tx_ring,
1383                 struct cmd_desc_type0 *first_desc,
1384                 struct sk_buff *skb)
1385 {
1386         u8 opcode = TX_ETHER_PKT;
1387         __be16 protocol = skb->protocol;
1388         u16 flags = 0, vid = 0;
1389         u32 producer;
1390         int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1391         struct cmd_desc_type0 *hwdesc;
1392         struct vlan_ethhdr *vh;
1393         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1394
1395         if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1396
1397                 vh = (struct vlan_ethhdr *)skb->data;
1398                 protocol = vh->h_vlan_encapsulated_proto;
1399                 flags = FLAGS_VLAN_TAGGED;
1400
1401         } else if (vlan_tx_tag_present(skb)) {
1402
1403                 flags = FLAGS_VLAN_OOB;
1404                 vid = vlan_tx_tag_get(skb);
1405                 qlcnic_set_tx_vlan_tci(first_desc, vid);
1406                 vlan_oob = 1;
1407         }
1408
1409         if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1410                         skb_shinfo(skb)->gso_size > 0) {
1411
1412                 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1413
1414                 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1415                 first_desc->total_hdr_length = hdr_len;
1416                 if (vlan_oob) {
1417                         first_desc->total_hdr_length += VLAN_HLEN;
1418                         first_desc->tcp_hdr_offset = VLAN_HLEN;
1419                         first_desc->ip_hdr_offset = VLAN_HLEN;
1420                         /* Only in case of TSO on vlan device */
1421                         flags |= FLAGS_VLAN_TAGGED;
1422                 }
1423
1424                 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1425                                 TX_TCP_LSO6 : TX_TCP_LSO;
1426                 tso = 1;
1427
1428         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1429                 u8 l4proto;
1430
1431                 if (protocol == cpu_to_be16(ETH_P_IP)) {
1432                         l4proto = ip_hdr(skb)->protocol;
1433
1434                         if (l4proto == IPPROTO_TCP)
1435                                 opcode = TX_TCP_PKT;
1436                         else if (l4proto == IPPROTO_UDP)
1437                                 opcode = TX_UDP_PKT;
1438                 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1439                         l4proto = ipv6_hdr(skb)->nexthdr;
1440
1441                         if (l4proto == IPPROTO_TCP)
1442                                 opcode = TX_TCPV6_PKT;
1443                         else if (l4proto == IPPROTO_UDP)
1444                                 opcode = TX_UDPV6_PKT;
1445                 }
1446         }
1447
1448         first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1449         first_desc->ip_hdr_offset += skb_network_offset(skb);
1450         qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
1451
1452         if (!tso)
1453                 return;
1454
1455         /* For LSO, we need to copy the MAC/IP/TCP headers into
1456          * the descriptor ring
1457          */
1458         producer = tx_ring->producer;
1459         copied = 0;
1460         offset = 2;
1461
1462         if (vlan_oob) {
1463                 /* Create a TSO vlan header template for firmware */
1464
1465                 hwdesc = &tx_ring->desc_head[producer];
1466                 tx_ring->cmd_buf_arr[producer].skb = NULL;
1467
1468                 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1469                                 hdr_len + VLAN_HLEN);
1470
1471                 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1472                 skb_copy_from_linear_data(skb, vh, 12);
1473                 vh->h_vlan_proto = htons(ETH_P_8021Q);
1474                 vh->h_vlan_TCI = htons(vid);
1475                 skb_copy_from_linear_data_offset(skb, 12,
1476                                 (char *)vh + 16, copy_len - 16);
1477
1478                 copied = copy_len - VLAN_HLEN;
1479                 offset = 0;
1480
1481                 producer = get_next_index(producer, tx_ring->num_desc);
1482         }
1483
1484         while (copied < hdr_len) {
1485
1486                 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1487                                 (hdr_len - copied));
1488
1489                 hwdesc = &tx_ring->desc_head[producer];
1490                 tx_ring->cmd_buf_arr[producer].skb = NULL;
1491
1492                 skb_copy_from_linear_data_offset(skb, copied,
1493                                  (char *)hwdesc + offset, copy_len);
1494
1495                 copied += copy_len;
1496                 offset = 0;
1497
1498                 producer = get_next_index(producer, tx_ring->num_desc);
1499         }
1500
1501         tx_ring->producer = producer;
1502         barrier();
1503         adapter->stats.lso_frames++;
1504 }
1505
1506 static int
1507 qlcnic_map_tx_skb(struct pci_dev *pdev,
1508                 struct sk_buff *skb, struct qlcnic_cmd_buffer *pbuf)
1509 {
1510         struct qlcnic_skb_frag *nf;
1511         struct skb_frag_struct *frag;
1512         int i, nr_frags;
1513         dma_addr_t map;
1514
1515         nr_frags = skb_shinfo(skb)->nr_frags;
1516         nf = &pbuf->frag_array[0];
1517
1518         map = pci_map_single(pdev, skb->data,
1519                         skb_headlen(skb), PCI_DMA_TODEVICE);
1520         if (pci_dma_mapping_error(pdev, map))
1521                 goto out_err;
1522
1523         nf->dma = map;
1524         nf->length = skb_headlen(skb);
1525
1526         for (i = 0; i < nr_frags; i++) {
1527                 frag = &skb_shinfo(skb)->frags[i];
1528                 nf = &pbuf->frag_array[i+1];
1529
1530                 map = pci_map_page(pdev, frag->page, frag->page_offset,
1531                                 frag->size, PCI_DMA_TODEVICE);
1532                 if (pci_dma_mapping_error(pdev, map))
1533                         goto unwind;
1534
1535                 nf->dma = map;
1536                 nf->length = frag->size;
1537         }
1538
1539         return 0;
1540
1541 unwind:
1542         while (--i >= 0) {
1543                 nf = &pbuf->frag_array[i+1];
1544                 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
1545         }
1546
1547         nf = &pbuf->frag_array[0];
1548         pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1549
1550 out_err:
1551         return -ENOMEM;
1552 }
1553
1554 static inline void
1555 qlcnic_clear_cmddesc(u64 *desc)
1556 {
1557         desc[0] = 0ULL;
1558         desc[2] = 0ULL;
1559 }
1560
1561 netdev_tx_t
1562 qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1563 {
1564         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1565         struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
1566         struct qlcnic_cmd_buffer *pbuf;
1567         struct qlcnic_skb_frag *buffrag;
1568         struct cmd_desc_type0 *hwdesc, *first_desc;
1569         struct pci_dev *pdev;
1570         int i, k;
1571
1572         u32 producer;
1573         int frag_count, no_of_desc;
1574         u32 num_txd = tx_ring->num_desc;
1575
1576         frag_count = skb_shinfo(skb)->nr_frags + 1;
1577
1578         /* 4 fragments per cmd des */
1579         no_of_desc = (frag_count + 3) >> 2;
1580
1581         if (unlikely(no_of_desc + 2 > qlcnic_tx_avail(tx_ring))) {
1582                 netif_stop_queue(netdev);
1583                 adapter->stats.xmit_off++;
1584                 return NETDEV_TX_BUSY;
1585         }
1586
1587         producer = tx_ring->producer;
1588         pbuf = &tx_ring->cmd_buf_arr[producer];
1589
1590         pdev = adapter->pdev;
1591
1592         if (qlcnic_map_tx_skb(pdev, skb, pbuf))
1593                 goto drop_packet;
1594
1595         pbuf->skb = skb;
1596         pbuf->frag_count = frag_count;
1597
1598         first_desc = hwdesc = &tx_ring->desc_head[producer];
1599         qlcnic_clear_cmddesc((u64 *)hwdesc);
1600
1601         qlcnic_set_tx_frags_len(first_desc, frag_count, skb->len);
1602         qlcnic_set_tx_port(first_desc, adapter->portnum);
1603
1604         for (i = 0; i < frag_count; i++) {
1605
1606                 k = i % 4;
1607
1608                 if ((k == 0) && (i > 0)) {
1609                         /* move to next desc.*/
1610                         producer = get_next_index(producer, num_txd);
1611                         hwdesc = &tx_ring->desc_head[producer];
1612                         qlcnic_clear_cmddesc((u64 *)hwdesc);
1613                         tx_ring->cmd_buf_arr[producer].skb = NULL;
1614                 }
1615
1616                 buffrag = &pbuf->frag_array[i];
1617
1618                 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
1619                 switch (k) {
1620                 case 0:
1621                         hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1622                         break;
1623                 case 1:
1624                         hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
1625                         break;
1626                 case 2:
1627                         hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
1628                         break;
1629                 case 3:
1630                         hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
1631                         break;
1632                 }
1633         }
1634
1635         tx_ring->producer = get_next_index(producer, num_txd);
1636
1637         qlcnic_tso_check(netdev, tx_ring, first_desc, skb);
1638
1639         qlcnic_update_cmd_producer(adapter, tx_ring);
1640
1641         adapter->stats.txbytes += skb->len;
1642         adapter->stats.xmitcalled++;
1643
1644         return NETDEV_TX_OK;
1645
1646 drop_packet:
1647         adapter->stats.txdropped++;
1648         dev_kfree_skb_any(skb);
1649         return NETDEV_TX_OK;
1650 }
1651
1652 static int qlcnic_check_temp(struct qlcnic_adapter *adapter)
1653 {
1654         struct net_device *netdev = adapter->netdev;
1655         u32 temp, temp_state, temp_val;
1656         int rv = 0;
1657
1658         temp = QLCRD32(adapter, CRB_TEMP_STATE);
1659
1660         temp_state = qlcnic_get_temp_state(temp);
1661         temp_val = qlcnic_get_temp_val(temp);
1662
1663         if (temp_state == QLCNIC_TEMP_PANIC) {
1664                 dev_err(&netdev->dev,
1665                        "Device temperature %d degrees C exceeds"
1666                        " maximum allowed. Hardware has been shut down.\n",
1667                        temp_val);
1668                 rv = 1;
1669         } else if (temp_state == QLCNIC_TEMP_WARN) {
1670                 if (adapter->temp == QLCNIC_TEMP_NORMAL) {
1671                         dev_err(&netdev->dev,
1672                                "Device temperature %d degrees C "
1673                                "exceeds operating range."
1674                                " Immediate action needed.\n",
1675                                temp_val);
1676                 }
1677         } else {
1678                 if (adapter->temp == QLCNIC_TEMP_WARN) {
1679                         dev_info(&netdev->dev,
1680                                "Device temperature is now %d degrees C"
1681                                " in normal range.\n", temp_val);
1682                 }
1683         }
1684         adapter->temp = temp_state;
1685         return rv;
1686 }
1687
1688 void qlcnic_advert_link_change(struct qlcnic_adapter *adapter, int linkup)
1689 {
1690         struct net_device *netdev = adapter->netdev;
1691
1692         if (adapter->ahw.linkup && !linkup) {
1693                 dev_info(&netdev->dev, "NIC Link is down\n");
1694                 adapter->ahw.linkup = 0;
1695                 if (netif_running(netdev)) {
1696                         netif_carrier_off(netdev);
1697                         netif_stop_queue(netdev);
1698                 }
1699         } else if (!adapter->ahw.linkup && linkup) {
1700                 dev_info(&netdev->dev, "NIC Link is up\n");
1701                 adapter->ahw.linkup = 1;
1702                 if (netif_running(netdev)) {
1703                         netif_carrier_on(netdev);
1704                         netif_wake_queue(netdev);
1705                 }
1706         }
1707 }
1708
1709 static void qlcnic_tx_timeout(struct net_device *netdev)
1710 {
1711         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1712
1713         if (test_bit(__QLCNIC_RESETTING, &adapter->state))
1714                 return;
1715
1716         dev_err(&netdev->dev, "transmit timeout, resetting.\n");
1717         schedule_work(&adapter->tx_timeout_task);
1718 }
1719
1720 static void qlcnic_tx_timeout_task(struct work_struct *work)
1721 {
1722         struct qlcnic_adapter *adapter =
1723                 container_of(work, struct qlcnic_adapter, tx_timeout_task);
1724
1725         if (!netif_running(adapter->netdev))
1726                 return;
1727
1728         if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
1729                 return;
1730
1731         if (++adapter->tx_timeo_cnt >= QLCNIC_MAX_TX_TIMEOUTS)
1732                 goto request_reset;
1733
1734         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1735         if (!qlcnic_reset_context(adapter)) {
1736                 adapter->netdev->trans_start = jiffies;
1737                 return;
1738
1739                 /* context reset failed, fall through for fw reset */
1740         }
1741
1742 request_reset:
1743         adapter->need_fw_reset = 1;
1744         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1745         QLCDB(adapter, DRV, "Resetting adapter\n");
1746 }
1747
1748 static struct net_device_stats *qlcnic_get_stats(struct net_device *netdev)
1749 {
1750         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1751         struct net_device_stats *stats = &netdev->stats;
1752
1753         memset(stats, 0, sizeof(*stats));
1754
1755         stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
1756         stats->tx_packets = adapter->stats.xmitfinished;
1757         stats->rx_bytes = adapter->stats.rxbytes;
1758         stats->tx_bytes = adapter->stats.txbytes;
1759         stats->rx_dropped = adapter->stats.rxdropped;
1760         stats->tx_dropped = adapter->stats.txdropped;
1761
1762         return stats;
1763 }
1764
1765 static irqreturn_t qlcnic_clear_legacy_intr(struct qlcnic_adapter *adapter)
1766 {
1767         u32 status;
1768
1769         status = readl(adapter->isr_int_vec);
1770
1771         if (!(status & adapter->int_vec_bit))
1772                 return IRQ_NONE;
1773
1774         /* check interrupt state machine, to be sure */
1775         status = readl(adapter->crb_int_state_reg);
1776         if (!ISR_LEGACY_INT_TRIGGERED(status))
1777                 return IRQ_NONE;
1778
1779         writel(0xffffffff, adapter->tgt_status_reg);
1780         /* read twice to ensure write is flushed */
1781         readl(adapter->isr_int_vec);
1782         readl(adapter->isr_int_vec);
1783
1784         return IRQ_HANDLED;
1785 }
1786
1787 static irqreturn_t qlcnic_tmp_intr(int irq, void *data)
1788 {
1789         struct qlcnic_host_sds_ring *sds_ring = data;
1790         struct qlcnic_adapter *adapter = sds_ring->adapter;
1791
1792         if (adapter->flags & QLCNIC_MSIX_ENABLED)
1793                 goto done;
1794         else if (adapter->flags & QLCNIC_MSI_ENABLED) {
1795                 writel(0xffffffff, adapter->tgt_status_reg);
1796                 goto done;
1797         }
1798
1799         if (qlcnic_clear_legacy_intr(adapter) == IRQ_NONE)
1800                 return IRQ_NONE;
1801
1802 done:
1803         adapter->diag_cnt++;
1804         qlcnic_enable_int(sds_ring);
1805         return IRQ_HANDLED;
1806 }
1807
1808 static irqreturn_t qlcnic_intr(int irq, void *data)
1809 {
1810         struct qlcnic_host_sds_ring *sds_ring = data;
1811         struct qlcnic_adapter *adapter = sds_ring->adapter;
1812
1813         if (qlcnic_clear_legacy_intr(adapter) == IRQ_NONE)
1814                 return IRQ_NONE;
1815
1816         napi_schedule(&sds_ring->napi);
1817
1818         return IRQ_HANDLED;
1819 }
1820
1821 static irqreturn_t qlcnic_msi_intr(int irq, void *data)
1822 {
1823         struct qlcnic_host_sds_ring *sds_ring = data;
1824         struct qlcnic_adapter *adapter = sds_ring->adapter;
1825
1826         /* clear interrupt */
1827         writel(0xffffffff, adapter->tgt_status_reg);
1828
1829         napi_schedule(&sds_ring->napi);
1830         return IRQ_HANDLED;
1831 }
1832
1833 static irqreturn_t qlcnic_msix_intr(int irq, void *data)
1834 {
1835         struct qlcnic_host_sds_ring *sds_ring = data;
1836
1837         napi_schedule(&sds_ring->napi);
1838         return IRQ_HANDLED;
1839 }
1840
1841 static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter)
1842 {
1843         u32 sw_consumer, hw_consumer;
1844         int count = 0, i;
1845         struct qlcnic_cmd_buffer *buffer;
1846         struct pci_dev *pdev = adapter->pdev;
1847         struct net_device *netdev = adapter->netdev;
1848         struct qlcnic_skb_frag *frag;
1849         int done;
1850         struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
1851
1852         if (!spin_trylock(&adapter->tx_clean_lock))
1853                 return 1;
1854
1855         sw_consumer = tx_ring->sw_consumer;
1856         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1857
1858         while (sw_consumer != hw_consumer) {
1859                 buffer = &tx_ring->cmd_buf_arr[sw_consumer];
1860                 if (buffer->skb) {
1861                         frag = &buffer->frag_array[0];
1862                         pci_unmap_single(pdev, frag->dma, frag->length,
1863                                          PCI_DMA_TODEVICE);
1864                         frag->dma = 0ULL;
1865                         for (i = 1; i < buffer->frag_count; i++) {
1866                                 frag++;
1867                                 pci_unmap_page(pdev, frag->dma, frag->length,
1868                                                PCI_DMA_TODEVICE);
1869                                 frag->dma = 0ULL;
1870                         }
1871
1872                         adapter->stats.xmitfinished++;
1873                         dev_kfree_skb_any(buffer->skb);
1874                         buffer->skb = NULL;
1875                 }
1876
1877                 sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
1878                 if (++count >= MAX_STATUS_HANDLE)
1879                         break;
1880         }
1881
1882         if (count && netif_running(netdev)) {
1883                 tx_ring->sw_consumer = sw_consumer;
1884
1885                 smp_mb();
1886
1887                 if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev)) {
1888                         __netif_tx_lock(tx_ring->txq, smp_processor_id());
1889                         if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) {
1890                                 netif_wake_queue(netdev);
1891                                 adapter->tx_timeo_cnt = 0;
1892                                 adapter->stats.xmit_on++;
1893                         }
1894                         __netif_tx_unlock(tx_ring->txq);
1895                 }
1896         }
1897         /*
1898          * If everything is freed up to consumer then check if the ring is full
1899          * If the ring is full then check if more needs to be freed and
1900          * schedule the call back again.
1901          *
1902          * This happens when there are 2 CPUs. One could be freeing and the
1903          * other filling it. If the ring is full when we get out of here and
1904          * the card has already interrupted the host then the host can miss the
1905          * interrupt.
1906          *
1907          * There is still a possible race condition and the host could miss an
1908          * interrupt. The card has to take care of this.
1909          */
1910         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1911         done = (sw_consumer == hw_consumer);
1912         spin_unlock(&adapter->tx_clean_lock);
1913
1914         return done;
1915 }
1916
1917 static int qlcnic_poll(struct napi_struct *napi, int budget)
1918 {
1919         struct qlcnic_host_sds_ring *sds_ring =
1920                 container_of(napi, struct qlcnic_host_sds_ring, napi);
1921
1922         struct qlcnic_adapter *adapter = sds_ring->adapter;
1923
1924         int tx_complete;
1925         int work_done;
1926
1927         tx_complete = qlcnic_process_cmd_ring(adapter);
1928
1929         work_done = qlcnic_process_rcv_ring(sds_ring, budget);
1930
1931         if ((work_done < budget) && tx_complete) {
1932                 napi_complete(&sds_ring->napi);
1933                 if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
1934                         qlcnic_enable_int(sds_ring);
1935         }
1936
1937         return work_done;
1938 }
1939
1940 #ifdef CONFIG_NET_POLL_CONTROLLER
1941 static void qlcnic_poll_controller(struct net_device *netdev)
1942 {
1943         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1944         disable_irq(adapter->irq);
1945         qlcnic_intr(adapter->irq, adapter);
1946         enable_irq(adapter->irq);
1947 }
1948 #endif
1949
1950 static void
1951 qlcnic_set_drv_state(struct qlcnic_adapter *adapter, int state)
1952 {
1953         u32  val;
1954
1955         WARN_ON(state != QLCNIC_DEV_NEED_RESET &&
1956                         state != QLCNIC_DEV_NEED_QUISCENT);
1957
1958         if (qlcnic_api_lock(adapter))
1959                 return ;
1960
1961         val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
1962
1963         if (state == QLCNIC_DEV_NEED_RESET)
1964                 val |= ((u32)0x1 << (adapter->portnum * 4));
1965         else if (state == QLCNIC_DEV_NEED_QUISCENT)
1966                 val |= ((u32)0x1 << ((adapter->portnum * 4) + 1));
1967
1968         QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
1969
1970         qlcnic_api_unlock(adapter);
1971 }
1972
1973 static int
1974 qlcnic_clr_drv_state(struct qlcnic_adapter *adapter)
1975 {
1976         u32  val;
1977
1978         if (qlcnic_api_lock(adapter))
1979                 return -EBUSY;
1980
1981         val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
1982         val &= ~((u32)0x3 << (adapter->portnum * 4));
1983         QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
1984
1985         qlcnic_api_unlock(adapter);
1986
1987         return 0;
1988 }
1989
1990 static void
1991 qlcnic_clr_all_drv_state(struct qlcnic_adapter *adapter)
1992 {
1993         u32  val;
1994
1995         if (qlcnic_api_lock(adapter))
1996                 goto err;
1997
1998         val = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
1999         val &= ~((u32)0x1 << (adapter->portnum * 4));
2000         QLCWR32(adapter, QLCNIC_CRB_DEV_REF_COUNT, val);
2001
2002         if (!(val & 0x11111111))
2003                 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_COLD);
2004
2005         val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2006         val &= ~((u32)0x3 << (adapter->portnum * 4));
2007         QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2008
2009         qlcnic_api_unlock(adapter);
2010 err:
2011         adapter->fw_fail_cnt = 0;
2012         clear_bit(__QLCNIC_START_FW, &adapter->state);
2013         clear_bit(__QLCNIC_RESETTING, &adapter->state);
2014 }
2015
2016 static int
2017 qlcnic_check_drv_state(struct qlcnic_adapter *adapter)
2018 {
2019         int act, state;
2020
2021         state = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2022         act = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
2023
2024         if (((state & 0x11111111) == (act & 0x11111111)) ||
2025                         ((act & 0x11111111) == ((state >> 1) & 0x11111111)))
2026                 return 0;
2027         else
2028                 return 1;
2029 }
2030
2031 static int
2032 qlcnic_can_start_firmware(struct qlcnic_adapter *adapter)
2033 {
2034         u32 val, prev_state;
2035         u8 dev_init_timeo = adapter->dev_init_timeo;
2036         int portnum = adapter->portnum;
2037
2038         if (qlcnic_api_lock(adapter))
2039                 return -1;
2040
2041         val = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
2042         if (!(val & ((int)0x1 << (portnum * 4)))) {
2043                 val |= ((u32)0x1 << (portnum * 4));
2044                 QLCWR32(adapter, QLCNIC_CRB_DEV_REF_COUNT, val);
2045         } else if (test_and_clear_bit(__QLCNIC_START_FW, &adapter->state)) {
2046                 goto start_fw;
2047         }
2048
2049         prev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2050         QLCDB(adapter, HW, "Device state = %u\n", prev_state);
2051
2052         switch (prev_state) {
2053         case QLCNIC_DEV_COLD:
2054 start_fw:
2055                 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_INITALIZING);
2056                 qlcnic_api_unlock(adapter);
2057                 return 1;
2058
2059         case QLCNIC_DEV_READY:
2060                 qlcnic_api_unlock(adapter);
2061                 return 0;
2062
2063         case QLCNIC_DEV_NEED_RESET:
2064                 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2065                 val |= ((u32)0x1 << (portnum * 4));
2066                 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2067                 break;
2068
2069         case QLCNIC_DEV_NEED_QUISCENT:
2070                 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2071                 val |= ((u32)0x1 << ((portnum * 4) + 1));
2072                 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2073                 break;
2074
2075         case QLCNIC_DEV_FAILED:
2076                 qlcnic_api_unlock(adapter);
2077                 return -1;
2078         }
2079
2080         qlcnic_api_unlock(adapter);
2081
2082         do {
2083                 msleep(1000);
2084         } while ((QLCRD32(adapter, QLCNIC_CRB_DEV_STATE) != QLCNIC_DEV_READY)
2085                         && --dev_init_timeo);
2086
2087         if (!dev_init_timeo) {
2088                 dev_err(&adapter->pdev->dev,
2089                         "Waiting for device to initialize timeout\n");
2090                 return -1;
2091         }
2092
2093         if (qlcnic_api_lock(adapter))
2094                 return -1;
2095
2096         val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2097         val &= ~((u32)0x3 << (portnum * 4));
2098         QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2099
2100         qlcnic_api_unlock(adapter);
2101
2102         return 0;
2103 }
2104
2105 static void
2106 qlcnic_fwinit_work(struct work_struct *work)
2107 {
2108         struct qlcnic_adapter *adapter = container_of(work,
2109                         struct qlcnic_adapter, fw_work.work);
2110         int dev_state;
2111
2112         if (test_bit(__QLCNIC_START_FW, &adapter->state)) {
2113
2114                 if (qlcnic_check_drv_state(adapter) &&
2115                         (adapter->fw_wait_cnt++ < adapter->reset_ack_timeo)) {
2116                         qlcnic_schedule_work(adapter,
2117                                         qlcnic_fwinit_work, FW_POLL_DELAY);
2118                         return;
2119                 }
2120
2121                 QLCDB(adapter, DRV, "Resetting FW\n");
2122                 if (!qlcnic_start_firmware(adapter)) {
2123                         qlcnic_schedule_work(adapter, qlcnic_attach_work, 0);
2124                         return;
2125                 }
2126
2127                 goto err_ret;
2128         }
2129
2130         if (adapter->fw_wait_cnt++ > (adapter->dev_init_timeo / 2)) {
2131                 dev_err(&adapter->pdev->dev,
2132                                 "Waiting for device to reset timeout\n");
2133                 goto err_ret;
2134         }
2135
2136         dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2137         QLCDB(adapter, HW, "Func waiting: Device state=%d\n", dev_state);
2138
2139         switch (dev_state) {
2140         case QLCNIC_DEV_READY:
2141                 if (!qlcnic_start_firmware(adapter)) {
2142                         qlcnic_schedule_work(adapter, qlcnic_attach_work, 0);
2143                         return;
2144                 }
2145         case QLCNIC_DEV_FAILED:
2146                 break;
2147
2148         default:
2149                 qlcnic_schedule_work(adapter,
2150                         qlcnic_fwinit_work, 2 * FW_POLL_DELAY);
2151                 return;
2152         }
2153
2154 err_ret:
2155         netif_device_attach(adapter->netdev);
2156         qlcnic_clr_all_drv_state(adapter);
2157 }
2158
2159 static void
2160 qlcnic_detach_work(struct work_struct *work)
2161 {
2162         struct qlcnic_adapter *adapter = container_of(work,
2163                         struct qlcnic_adapter, fw_work.work);
2164         struct net_device *netdev = adapter->netdev;
2165         u32 status;
2166
2167         netif_device_detach(netdev);
2168
2169         qlcnic_down(adapter, netdev);
2170
2171         rtnl_lock();
2172         qlcnic_detach(adapter);
2173         rtnl_unlock();
2174
2175         status = QLCRD32(adapter, QLCNIC_PEG_HALT_STATUS1);
2176
2177         if (status & QLCNIC_RCODE_FATAL_ERROR)
2178                 goto err_ret;
2179
2180         if (adapter->temp == QLCNIC_TEMP_PANIC)
2181                 goto err_ret;
2182
2183         qlcnic_set_drv_state(adapter, adapter->dev_state);
2184
2185         adapter->fw_wait_cnt = 0;
2186
2187         qlcnic_schedule_work(adapter, qlcnic_fwinit_work, FW_POLL_DELAY);
2188
2189         return;
2190
2191 err_ret:
2192         dev_err(&adapter->pdev->dev, "detach failed; status=%d temp=%d\n",
2193                         status, adapter->temp);
2194         netif_device_attach(netdev);
2195         qlcnic_clr_all_drv_state(adapter);
2196
2197 }
2198
2199 static void
2200 qlcnic_dev_request_reset(struct qlcnic_adapter *adapter)
2201 {
2202         u32 state;
2203
2204         if (qlcnic_api_lock(adapter))
2205                 return;
2206
2207         state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2208
2209         if (state != QLCNIC_DEV_INITALIZING && state != QLCNIC_DEV_NEED_RESET) {
2210                 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_NEED_RESET);
2211                 set_bit(__QLCNIC_START_FW, &adapter->state);
2212                 QLCDB(adapter, DRV, "NEED_RESET state set\n");
2213         }
2214
2215         qlcnic_api_unlock(adapter);
2216 }
2217
2218 static void
2219 qlcnic_schedule_work(struct qlcnic_adapter *adapter,
2220                 work_func_t func, int delay)
2221 {
2222         INIT_DELAYED_WORK(&adapter->fw_work, func);
2223         schedule_delayed_work(&adapter->fw_work, round_jiffies_relative(delay));
2224 }
2225
2226 static void
2227 qlcnic_cancel_fw_work(struct qlcnic_adapter *adapter)
2228 {
2229         while (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
2230                 msleep(10);
2231
2232         cancel_delayed_work_sync(&adapter->fw_work);
2233 }
2234
2235 static void
2236 qlcnic_attach_work(struct work_struct *work)
2237 {
2238         struct qlcnic_adapter *adapter = container_of(work,
2239                                 struct qlcnic_adapter, fw_work.work);
2240         struct net_device *netdev = adapter->netdev;
2241         int err;
2242
2243         if (netif_running(netdev)) {
2244                 err = qlcnic_attach(adapter);
2245                 if (err)
2246                         goto done;
2247
2248                 err = qlcnic_up(adapter, netdev);
2249                 if (err) {
2250                         qlcnic_detach(adapter);
2251                         goto done;
2252                 }
2253
2254                 qlcnic_config_indev_addr(netdev, NETDEV_UP);
2255         }
2256
2257 done:
2258         netif_device_attach(netdev);
2259         adapter->fw_fail_cnt = 0;
2260         clear_bit(__QLCNIC_RESETTING, &adapter->state);
2261
2262         if (!qlcnic_clr_drv_state(adapter))
2263                 qlcnic_schedule_work(adapter, qlcnic_fw_poll_work,
2264                                                         FW_POLL_DELAY);
2265 }
2266
2267 static int
2268 qlcnic_check_health(struct qlcnic_adapter *adapter)
2269 {
2270         u32 state = 0, heartbit;
2271         struct net_device *netdev = adapter->netdev;
2272
2273         if (qlcnic_check_temp(adapter))
2274                 goto detach;
2275
2276         if (adapter->need_fw_reset) {
2277                 qlcnic_dev_request_reset(adapter);
2278                 goto detach;
2279         }
2280
2281         state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2282         if (state == QLCNIC_DEV_NEED_RESET || state == QLCNIC_DEV_NEED_QUISCENT)
2283                 adapter->need_fw_reset = 1;
2284
2285         heartbit = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
2286         if (heartbit != adapter->heartbit) {
2287                 adapter->heartbit = heartbit;
2288                 adapter->fw_fail_cnt = 0;
2289                 if (adapter->need_fw_reset)
2290                         goto detach;
2291                 return 0;
2292         }
2293
2294         if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2295                 return 0;
2296
2297         qlcnic_dev_request_reset(adapter);
2298
2299         clear_bit(__QLCNIC_FW_ATTACHED, &adapter->state);
2300
2301         dev_info(&netdev->dev, "firmware hang detected\n");
2302
2303 detach:
2304         adapter->dev_state = (state == QLCNIC_DEV_NEED_QUISCENT) ? state :
2305                 QLCNIC_DEV_NEED_RESET;
2306
2307         if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
2308                 !test_and_set_bit(__QLCNIC_RESETTING, &adapter->state)) {
2309
2310                 qlcnic_schedule_work(adapter, qlcnic_detach_work, 0);
2311                 QLCDB(adapter, DRV, "fw recovery scheduled.\n");
2312         }
2313
2314         return 1;
2315 }
2316
2317 static void
2318 qlcnic_fw_poll_work(struct work_struct *work)
2319 {
2320         struct qlcnic_adapter *adapter = container_of(work,
2321                                 struct qlcnic_adapter, fw_work.work);
2322
2323         if (test_bit(__QLCNIC_RESETTING, &adapter->state))
2324                 goto reschedule;
2325
2326
2327         if (qlcnic_check_health(adapter))
2328                 return;
2329
2330 reschedule:
2331         qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
2332 }
2333
2334 static ssize_t
2335 qlcnic_store_bridged_mode(struct device *dev,
2336                 struct device_attribute *attr, const char *buf, size_t len)
2337 {
2338         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2339         unsigned long new;
2340         int ret = -EINVAL;
2341
2342         if (!(adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG))
2343                 goto err_out;
2344
2345         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
2346                 goto err_out;
2347
2348         if (strict_strtoul(buf, 2, &new))
2349                 goto err_out;
2350
2351         if (!qlcnic_config_bridged_mode(adapter, !!new))
2352                 ret = len;
2353
2354 err_out:
2355         return ret;
2356 }
2357
2358 static ssize_t
2359 qlcnic_show_bridged_mode(struct device *dev,
2360                 struct device_attribute *attr, char *buf)
2361 {
2362         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2363         int bridged_mode = 0;
2364
2365         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
2366                 bridged_mode = !!(adapter->flags & QLCNIC_BRIDGE_ENABLED);
2367
2368         return sprintf(buf, "%d\n", bridged_mode);
2369 }
2370
2371 static struct device_attribute dev_attr_bridged_mode = {
2372        .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2373        .show = qlcnic_show_bridged_mode,
2374        .store = qlcnic_store_bridged_mode,
2375 };
2376
2377 static ssize_t
2378 qlcnic_store_diag_mode(struct device *dev,
2379                 struct device_attribute *attr, const char *buf, size_t len)
2380 {
2381         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2382         unsigned long new;
2383
2384         if (strict_strtoul(buf, 2, &new))
2385                 return -EINVAL;
2386
2387         if (!!new != !!(adapter->flags & QLCNIC_DIAG_ENABLED))
2388                 adapter->flags ^= QLCNIC_DIAG_ENABLED;
2389
2390         return len;
2391 }
2392
2393 static ssize_t
2394 qlcnic_show_diag_mode(struct device *dev,
2395                 struct device_attribute *attr, char *buf)
2396 {
2397         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2398
2399         return sprintf(buf, "%d\n",
2400                         !!(adapter->flags & QLCNIC_DIAG_ENABLED));
2401 }
2402
2403 static struct device_attribute dev_attr_diag_mode = {
2404         .attr = {.name = "diag_mode", .mode = (S_IRUGO | S_IWUSR)},
2405         .show = qlcnic_show_diag_mode,
2406         .store = qlcnic_store_diag_mode,
2407 };
2408
2409 static int
2410 qlcnic_sysfs_validate_crb(struct qlcnic_adapter *adapter,
2411                 loff_t offset, size_t size)
2412 {
2413         size_t crb_size = 4;
2414
2415         if (!(adapter->flags & QLCNIC_DIAG_ENABLED))
2416                 return -EIO;
2417
2418         if (offset < QLCNIC_PCI_CRBSPACE) {
2419                 if (ADDR_IN_RANGE(offset, QLCNIC_PCI_CAMQM,
2420                                         QLCNIC_PCI_CAMQM_END))
2421                         crb_size = 8;
2422                 else
2423                         return -EINVAL;
2424         }
2425
2426         if ((size != crb_size) || (offset & (crb_size-1)))
2427                 return  -EINVAL;
2428
2429         return 0;
2430 }
2431
2432 static ssize_t
2433 qlcnic_sysfs_read_crb(struct kobject *kobj, struct bin_attribute *attr,
2434                 char *buf, loff_t offset, size_t size)
2435 {
2436         struct device *dev = container_of(kobj, struct device, kobj);
2437         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2438         u32 data;
2439         u64 qmdata;
2440         int ret;
2441
2442         ret = qlcnic_sysfs_validate_crb(adapter, offset, size);
2443         if (ret != 0)
2444                 return ret;
2445
2446         if (ADDR_IN_RANGE(offset, QLCNIC_PCI_CAMQM, QLCNIC_PCI_CAMQM_END)) {
2447                 qlcnic_pci_camqm_read_2M(adapter, offset, &qmdata);
2448                 memcpy(buf, &qmdata, size);
2449         } else {
2450                 data = QLCRD32(adapter, offset);
2451                 memcpy(buf, &data, size);
2452         }
2453         return size;
2454 }
2455
2456 static ssize_t
2457 qlcnic_sysfs_write_crb(struct kobject *kobj, struct bin_attribute *attr,
2458                 char *buf, loff_t offset, size_t size)
2459 {
2460         struct device *dev = container_of(kobj, struct device, kobj);
2461         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2462         u32 data;
2463         u64 qmdata;
2464         int ret;
2465
2466         ret = qlcnic_sysfs_validate_crb(adapter, offset, size);
2467         if (ret != 0)
2468                 return ret;
2469
2470         if (ADDR_IN_RANGE(offset, QLCNIC_PCI_CAMQM, QLCNIC_PCI_CAMQM_END)) {
2471                 memcpy(&qmdata, buf, size);
2472                 qlcnic_pci_camqm_write_2M(adapter, offset, qmdata);
2473         } else {
2474                 memcpy(&data, buf, size);
2475                 QLCWR32(adapter, offset, data);
2476         }
2477         return size;
2478 }
2479
2480 static int
2481 qlcnic_sysfs_validate_mem(struct qlcnic_adapter *adapter,
2482                 loff_t offset, size_t size)
2483 {
2484         if (!(adapter->flags & QLCNIC_DIAG_ENABLED))
2485                 return -EIO;
2486
2487         if ((size != 8) || (offset & 0x7))
2488                 return  -EIO;
2489
2490         return 0;
2491 }
2492
2493 static ssize_t
2494 qlcnic_sysfs_read_mem(struct kobject *kobj, struct bin_attribute *attr,
2495                 char *buf, loff_t offset, size_t size)
2496 {
2497         struct device *dev = container_of(kobj, struct device, kobj);
2498         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2499         u64 data;
2500         int ret;
2501
2502         ret = qlcnic_sysfs_validate_mem(adapter, offset, size);
2503         if (ret != 0)
2504                 return ret;
2505
2506         if (qlcnic_pci_mem_read_2M(adapter, offset, &data))
2507                 return -EIO;
2508
2509         memcpy(buf, &data, size);
2510
2511         return size;
2512 }
2513
2514 static ssize_t
2515 qlcnic_sysfs_write_mem(struct kobject *kobj, struct bin_attribute *attr,
2516                 char *buf, loff_t offset, size_t size)
2517 {
2518         struct device *dev = container_of(kobj, struct device, kobj);
2519         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2520         u64 data;
2521         int ret;
2522
2523         ret = qlcnic_sysfs_validate_mem(adapter, offset, size);
2524         if (ret != 0)
2525                 return ret;
2526
2527         memcpy(&data, buf, size);
2528
2529         if (qlcnic_pci_mem_write_2M(adapter, offset, data))
2530                 return -EIO;
2531
2532         return size;
2533 }
2534
2535
2536 static struct bin_attribute bin_attr_crb = {
2537         .attr = {.name = "crb", .mode = (S_IRUGO | S_IWUSR)},
2538         .size = 0,
2539         .read = qlcnic_sysfs_read_crb,
2540         .write = qlcnic_sysfs_write_crb,
2541 };
2542
2543 static struct bin_attribute bin_attr_mem = {
2544         .attr = {.name = "mem", .mode = (S_IRUGO | S_IWUSR)},
2545         .size = 0,
2546         .read = qlcnic_sysfs_read_mem,
2547         .write = qlcnic_sysfs_write_mem,
2548 };
2549
2550 static void
2551 qlcnic_create_sysfs_entries(struct qlcnic_adapter *adapter)
2552 {
2553         struct device *dev = &adapter->pdev->dev;
2554
2555         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
2556                 if (device_create_file(dev, &dev_attr_bridged_mode))
2557                         dev_warn(dev,
2558                                 "failed to create bridged_mode sysfs entry\n");
2559 }
2560
2561 static void
2562 qlcnic_remove_sysfs_entries(struct qlcnic_adapter *adapter)
2563 {
2564         struct device *dev = &adapter->pdev->dev;
2565
2566         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
2567                 device_remove_file(dev, &dev_attr_bridged_mode);
2568 }
2569
2570 static void
2571 qlcnic_create_diag_entries(struct qlcnic_adapter *adapter)
2572 {
2573         struct device *dev = &adapter->pdev->dev;
2574
2575         if (device_create_file(dev, &dev_attr_diag_mode))
2576                 dev_info(dev, "failed to create diag_mode sysfs entry\n");
2577         if (device_create_bin_file(dev, &bin_attr_crb))
2578                 dev_info(dev, "failed to create crb sysfs entry\n");
2579         if (device_create_bin_file(dev, &bin_attr_mem))
2580                 dev_info(dev, "failed to create mem sysfs entry\n");
2581 }
2582
2583
2584 static void
2585 qlcnic_remove_diag_entries(struct qlcnic_adapter *adapter)
2586 {
2587         struct device *dev = &adapter->pdev->dev;
2588
2589         device_remove_file(dev, &dev_attr_diag_mode);
2590         device_remove_bin_file(dev, &bin_attr_crb);
2591         device_remove_bin_file(dev, &bin_attr_mem);
2592 }
2593
2594 #ifdef CONFIG_INET
2595
2596 #define is_qlcnic_netdev(dev) (dev->netdev_ops == &qlcnic_netdev_ops)
2597
2598 static int
2599 qlcnic_destip_supported(struct qlcnic_adapter *adapter)
2600 {
2601         if (adapter->ahw.cut_through)
2602                 return 0;
2603
2604         return 1;
2605 }
2606
2607 static void
2608 qlcnic_config_indev_addr(struct net_device *dev, unsigned long event)
2609 {
2610         struct in_device *indev;
2611         struct qlcnic_adapter *adapter = netdev_priv(dev);
2612
2613         if (!qlcnic_destip_supported(adapter))
2614                 return;
2615
2616         indev = in_dev_get(dev);
2617         if (!indev)
2618                 return;
2619
2620         for_ifa(indev) {
2621                 switch (event) {
2622                 case NETDEV_UP:
2623                         qlcnic_config_ipaddr(adapter,
2624                                         ifa->ifa_address, QLCNIC_IP_UP);
2625                         break;
2626                 case NETDEV_DOWN:
2627                         qlcnic_config_ipaddr(adapter,
2628                                         ifa->ifa_address, QLCNIC_IP_DOWN);
2629                         break;
2630                 default:
2631                         break;
2632                 }
2633         } endfor_ifa(indev);
2634
2635         in_dev_put(indev);
2636         return;
2637 }
2638
2639 static int qlcnic_netdev_event(struct notifier_block *this,
2640                                  unsigned long event, void *ptr)
2641 {
2642         struct qlcnic_adapter *adapter;
2643         struct net_device *dev = (struct net_device *)ptr;
2644
2645 recheck:
2646         if (dev == NULL)
2647                 goto done;
2648
2649         if (dev->priv_flags & IFF_802_1Q_VLAN) {
2650                 dev = vlan_dev_real_dev(dev);
2651                 goto recheck;
2652         }
2653
2654         if (!is_qlcnic_netdev(dev))
2655                 goto done;
2656
2657         adapter = netdev_priv(dev);
2658
2659         if (!adapter)
2660                 goto done;
2661
2662         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
2663                 goto done;
2664
2665         qlcnic_config_indev_addr(dev, event);
2666 done:
2667         return NOTIFY_DONE;
2668 }
2669
2670 static int
2671 qlcnic_inetaddr_event(struct notifier_block *this,
2672                 unsigned long event, void *ptr)
2673 {
2674         struct qlcnic_adapter *adapter;
2675         struct net_device *dev;
2676
2677         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2678
2679         dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
2680
2681 recheck:
2682         if (dev == NULL || !netif_running(dev))
2683                 goto done;
2684
2685         if (dev->priv_flags & IFF_802_1Q_VLAN) {
2686                 dev = vlan_dev_real_dev(dev);
2687                 goto recheck;
2688         }
2689
2690         if (!is_qlcnic_netdev(dev))
2691                 goto done;
2692
2693         adapter = netdev_priv(dev);
2694
2695         if (!adapter || !qlcnic_destip_supported(adapter))
2696                 goto done;
2697
2698         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
2699                 goto done;
2700
2701         switch (event) {
2702         case NETDEV_UP:
2703                 qlcnic_config_ipaddr(adapter, ifa->ifa_address, QLCNIC_IP_UP);
2704                 break;
2705         case NETDEV_DOWN:
2706                 qlcnic_config_ipaddr(adapter, ifa->ifa_address, QLCNIC_IP_DOWN);
2707                 break;
2708         default:
2709                 break;
2710         }
2711
2712 done:
2713         return NOTIFY_DONE;
2714 }
2715
2716 static struct notifier_block    qlcnic_netdev_cb = {
2717         .notifier_call = qlcnic_netdev_event,
2718 };
2719
2720 static struct notifier_block qlcnic_inetaddr_cb = {
2721         .notifier_call = qlcnic_inetaddr_event,
2722 };
2723 #else
2724 static void
2725 qlcnic_config_indev_addr(struct net_device *dev, unsigned long event)
2726 { }
2727 #endif
2728
2729 static struct pci_driver qlcnic_driver = {
2730         .name = qlcnic_driver_name,
2731         .id_table = qlcnic_pci_tbl,
2732         .probe = qlcnic_probe,
2733         .remove = __devexit_p(qlcnic_remove),
2734 #ifdef CONFIG_PM
2735         .suspend = qlcnic_suspend,
2736         .resume = qlcnic_resume,
2737 #endif
2738         .shutdown = qlcnic_shutdown
2739 };
2740
2741 static int __init qlcnic_init_module(void)
2742 {
2743
2744         printk(KERN_INFO "%s\n", qlcnic_driver_string);
2745
2746 #ifdef CONFIG_INET
2747         register_netdevice_notifier(&qlcnic_netdev_cb);
2748         register_inetaddr_notifier(&qlcnic_inetaddr_cb);
2749 #endif
2750
2751
2752         return pci_register_driver(&qlcnic_driver);
2753 }
2754
2755 module_init(qlcnic_init_module);
2756
2757 static void __exit qlcnic_exit_module(void)
2758 {
2759
2760         pci_unregister_driver(&qlcnic_driver);
2761
2762 #ifdef CONFIG_INET
2763         unregister_inetaddr_notifier(&qlcnic_inetaddr_cb);
2764         unregister_netdevice_notifier(&qlcnic_netdev_cb);
2765 #endif
2766 }
2767
2768 module_exit(qlcnic_exit_module);