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         if (!qlcnic_can_start_firmware(adapter))
 654                 goto wait_init;
 655
 656         first_boot = QLCRD32(adapter, QLCNIC_CAM_RAM(0x1fc));
 657         if (first_boot == 0x55555555)
 658                 /* This is the first boot after power up */
 659                 QLCWR32(adapter, QLCNIC_CAM_RAM(0x1fc), QLCNIC_BDINFO_MAGIC);
 660
 661         qlcnic_request_firmware(adapter);
 662
 663         err = qlcnic_need_fw_reset(adapter);
 664         if (err < 0)
 665                 goto err_out;
 666         if (err == 0)
 667                 goto wait_init;
 668
 669         if (first_boot != 0x55555555) {
 670                 QLCWR32(adapter, CRB_CMDPEG_STATE, 0);
 671                 qlcnic_pinit_from_rom(adapter);
 672                 msleep(1);
 673         }
 674
 675         QLCWR32(adapter, CRB_DMA_SHIFT, 0x55555555);
 676         QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS1, 0);
 677         QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS2, 0);
 678
 679         qlcnic_set_port_mode(adapter);
 680
 681         err = qlcnic_load_firmware(adapter);
 682         if (err)
 683                 goto err_out;
 684
 685         qlcnic_release_firmware(adapter);
 686
 687         val = (_QLCNIC_LINUX_MAJOR << 16)
 688                 | ((_QLCNIC_LINUX_MINOR << 8))
 689                 | (_QLCNIC_LINUX_SUBVERSION);
 690         QLCWR32(adapter, CRB_DRIVER_VERSION, val);
 691
 692 wait_init:
 693         /* Handshake with the card before we register the devices. */
 694         err = qlcnic_phantom_init(adapter);
 695         if (err)
 696                 goto err_out;
 697
 698         QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_READY);
 699
 700         qlcnic_update_dma_mask(adapter);
 701
 702         qlcnic_check_options(adapter);
 703
 704         adapter->need_fw_reset = 0;
 705
 706         /* fall through and release firmware */
 707
 708 err_out:
 709         qlcnic_release_firmware(adapter);
 710         return err;
 711 }
 712
 713 static int
 714 qlcnic_request_irq(struct qlcnic_adapter *adapter)
 715 {
 716         irq_handler_t handler;
 717         struct qlcnic_host_sds_ring *sds_ring;
 718         int err, ring;
 719
 720         unsigned long flags = 0;
 721         struct net_device *netdev = adapter->netdev;
 722         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 723
 724         if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
 725                 handler = qlcnic_tmp_intr;
 726                 if (!QLCNIC_IS_MSI_FAMILY(adapter))
 727                         flags |= IRQF_SHARED;
 728
 729         } else {
 730                 if (adapter->flags & QLCNIC_MSIX_ENABLED)
 731                         handler = qlcnic_msix_intr;
 732                 else if (adapter->flags & QLCNIC_MSI_ENABLED)
 733                         handler = qlcnic_msi_intr;
 734                 else {
 735                         flags |= IRQF_SHARED;
 736                         handler = qlcnic_intr;
 737                 }
 738         }
 739         adapter->irq = netdev->irq;
 740
 741         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 742                 sds_ring = &recv_ctx->sds_rings[ring];
 743                 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
 744                 err = request_irq(sds_ring->irq, handler,
 745                                   flags, sds_ring->name, sds_ring);
 746                 if (err)
 747                         return err;
 748         }
 749
 750         return 0;
 751 }
 752
 753 static void
 754 qlcnic_free_irq(struct qlcnic_adapter *adapter)
 755 {
 756         int ring;
 757         struct qlcnic_host_sds_ring *sds_ring;
 758
 759         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 760
 761         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 762                 sds_ring = &recv_ctx->sds_rings[ring];
 763                 free_irq(sds_ring->irq, sds_ring);
 764         }
 765 }
 766
 767 static void
 768 qlcnic_init_coalesce_defaults(struct qlcnic_adapter *adapter)
 769 {
 770         adapter->coal.flags = QLCNIC_INTR_DEFAULT;
 771         adapter->coal.normal.data.rx_time_us =
 772                 QLCNIC_DEFAULT_INTR_COALESCE_RX_TIME_US;
 773         adapter->coal.normal.data.rx_packets =
 774                 QLCNIC_DEFAULT_INTR_COALESCE_RX_PACKETS;
 775         adapter->coal.normal.data.tx_time_us =
 776                 QLCNIC_DEFAULT_INTR_COALESCE_TX_TIME_US;
 777         adapter->coal.normal.data.tx_packets =
 778                 QLCNIC_DEFAULT_INTR_COALESCE_TX_PACKETS;
 779 }
 780
 781 static int
 782 __qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
 783 {
 784         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
 785                 return -EIO;
 786
 787         qlcnic_set_multi(netdev);
 788         qlcnic_fw_cmd_set_mtu(adapter, netdev->mtu);
 789
 790         adapter->ahw.linkup = 0;
 791
 792         if (adapter->max_sds_rings > 1)
 793                 qlcnic_config_rss(adapter, 1);
 794
 795         qlcnic_config_intr_coalesce(adapter);
 796
 797         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
 798                 qlcnic_config_hw_lro(adapter, QLCNIC_LRO_ENABLED);
 799
 800         qlcnic_napi_enable(adapter);
 801
 802         qlcnic_linkevent_request(adapter, 1);
 803
 804         set_bit(__QLCNIC_DEV_UP, &adapter->state);
 805         return 0;
 806 }
 807
 808 /* Usage: During resume and firmware recovery module.*/
 809
 810 static int
 811 qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
 812 {
 813         int err = 0;
 814
 815         rtnl_lock();
 816         if (netif_running(netdev))
 817                 err = __qlcnic_up(adapter, netdev);
 818         rtnl_unlock();
 819
 820         return err;
 821 }
 822
 823 static void
 824 __qlcnic_down(struct qlcnic_adapter *adapter, struct net_device *netdev)
 825 {
 826         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
 827                 return;
 828
 829         if (!test_and_clear_bit(__QLCNIC_DEV_UP, &adapter->state))
 830                 return;
 831
 832         smp_mb();
 833         spin_lock(&adapter->tx_clean_lock);
 834         netif_carrier_off(netdev);
 835         netif_tx_disable(netdev);
 836
 837         qlcnic_free_mac_list(adapter);
 838
 839         qlcnic_nic_set_promisc(adapter, QLCNIC_NIU_NON_PROMISC_MODE);
 840
 841         qlcnic_napi_disable(adapter);
 842
 843         qlcnic_release_tx_buffers(adapter);
 844         spin_unlock(&adapter->tx_clean_lock);
 845 }
 846
 847 /* Usage: During suspend and firmware recovery module */
 848
 849 static void
 850 qlcnic_down(struct qlcnic_adapter *adapter, struct net_device *netdev)
 851 {
 852         rtnl_lock();
 853         if (netif_running(netdev))
 854                 __qlcnic_down(adapter, netdev);
 855         rtnl_unlock();
 856
 857 }
 858
 859 static int
 860 qlcnic_attach(struct qlcnic_adapter *adapter)
 861 {
 862         struct net_device *netdev = adapter->netdev;
 863         struct pci_dev *pdev = adapter->pdev;
 864         int err, ring;
 865         struct qlcnic_host_rds_ring *rds_ring;
 866
 867         if (adapter->is_up == QLCNIC_ADAPTER_UP_MAGIC)
 868                 return 0;
 869
 870         err = qlcnic_init_firmware(adapter);
 871         if (err)
 872                 return err;
 873
 874         err = qlcnic_napi_add(adapter, netdev);
 875         if (err)
 876                 return err;
 877
 878         err = qlcnic_alloc_sw_resources(adapter);
 879         if (err) {
 880                 dev_err(&pdev->dev, "Error in setting sw resources\n");
 881                 return err;
 882         }
 883
 884         err = qlcnic_alloc_hw_resources(adapter);
 885         if (err) {
 886                 dev_err(&pdev->dev, "Error in setting hw resources\n");
 887                 goto err_out_free_sw;
 888         }
 889
 890
 891         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 892                 rds_ring = &adapter->recv_ctx.rds_rings[ring];
 893                 qlcnic_post_rx_buffers(adapter, ring, rds_ring);
 894         }
 895
 896         err = qlcnic_request_irq(adapter);
 897         if (err) {
 898                 dev_err(&pdev->dev, "failed to setup interrupt\n");
 899                 goto err_out_free_rxbuf;
 900         }
 901
 902         qlcnic_init_coalesce_defaults(adapter);
 903
 904         qlcnic_create_sysfs_entries(adapter);
 905
 906         adapter->is_up = QLCNIC_ADAPTER_UP_MAGIC;
 907         return 0;
 908
 909 err_out_free_rxbuf:
 910         qlcnic_release_rx_buffers(adapter);
 911         qlcnic_free_hw_resources(adapter);
 912 err_out_free_sw:
 913         qlcnic_free_sw_resources(adapter);
 914         return err;
 915 }
 916
 917 static void
 918 qlcnic_detach(struct qlcnic_adapter *adapter)
 919 {
 920         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
 921                 return;
 922
 923         qlcnic_remove_sysfs_entries(adapter);
 924
 925         qlcnic_free_hw_resources(adapter);
 926         qlcnic_release_rx_buffers(adapter);
 927         qlcnic_free_irq(adapter);
 928         qlcnic_napi_del(adapter);
 929         qlcnic_free_sw_resources(adapter);
 930
 931         adapter->is_up = 0;
 932 }
 933
 934 void qlcnic_diag_free_res(struct net_device *netdev, int max_sds_rings)
 935 {
 936         struct qlcnic_adapter *adapter = netdev_priv(netdev);
 937         struct qlcnic_host_sds_ring *sds_ring;
 938         int ring;
 939
 940         if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
 941                 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 942                         sds_ring = &adapter->recv_ctx.sds_rings[ring];
 943                         qlcnic_disable_int(sds_ring);
 944                 }
 945         }
 946
 947         qlcnic_detach(adapter);
 948
 949         adapter->diag_test = 0;
 950         adapter->max_sds_rings = max_sds_rings;
 951
 952         if (qlcnic_attach(adapter))
 953                 return;
 954
 955         if (netif_running(netdev))
 956                 __qlcnic_up(adapter, netdev);
 957
 958         netif_device_attach(netdev);
 959 }
 960
 961 int qlcnic_diag_alloc_res(struct net_device *netdev, int test)
 962 {
 963         struct qlcnic_adapter *adapter = netdev_priv(netdev);
 964         struct qlcnic_host_sds_ring *sds_ring;
 965         int ring;
 966         int ret;
 967
 968         netif_device_detach(netdev);
 969
 970         if (netif_running(netdev))
 971                 __qlcnic_down(adapter, netdev);
 972
 973         qlcnic_detach(adapter);
 974
 975         adapter->max_sds_rings = 1;
 976         adapter->diag_test = test;
 977
 978         ret = qlcnic_attach(adapter);
 979         if (ret)
 980                 return ret;
 981
 982         if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
 983                 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 984                         sds_ring = &adapter->recv_ctx.sds_rings[ring];
 985                         qlcnic_enable_int(sds_ring);
 986                 }
 987         }
 988
 989         return 0;
 990 }
 991
 992 int
 993 qlcnic_reset_context(struct qlcnic_adapter *adapter)
 994 {
 995         int err = 0;
 996         struct net_device *netdev = adapter->netdev;
 997
 998         if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
 999                 return -EBUSY;
1000
1001         if (adapter->is_up == QLCNIC_ADAPTER_UP_MAGIC) {
1002
1003                 netif_device_detach(netdev);
1004
1005                 if (netif_running(netdev))
1006                         __qlcnic_down(adapter, netdev);
1007
1008                 qlcnic_detach(adapter);
1009
1010                 if (netif_running(netdev)) {
1011                         err = qlcnic_attach(adapter);
1012                         if (!err)
1013                                 err = __qlcnic_up(adapter, netdev);
1014
1015                         if (err)
1016                                 goto done;
1017                 }
1018
1019                 netif_device_attach(netdev);
1020         }
1021
1022 done:
1023         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1024         return err;
1025 }
1026
1027 static int
1028 qlcnic_setup_netdev(struct qlcnic_adapter *adapter,
1029                 struct net_device *netdev)
1030 {
1031         int err;
1032         struct pci_dev *pdev = adapter->pdev;
1033
1034         adapter->rx_csum = 1;
1035         adapter->mc_enabled = 0;
1036         adapter->max_mc_count = 38;
1037
1038         netdev->netdev_ops         = &qlcnic_netdev_ops;
1039         netdev->watchdog_timeo     = 2*HZ;
1040
1041         qlcnic_change_mtu(netdev, netdev->mtu);
1042
1043         SET_ETHTOOL_OPS(netdev, &qlcnic_ethtool_ops);
1044
1045         netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1046         netdev->features |= (NETIF_F_GRO);
1047         netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO);
1048
1049         netdev->features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1050         netdev->vlan_features |= (NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
1051
1052         if (adapter->pci_using_dac) {
1053                 netdev->features |= NETIF_F_HIGHDMA;
1054                 netdev->vlan_features |= NETIF_F_HIGHDMA;
1055         }
1056
1057         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_FVLANTX)
1058                 netdev->features |= (NETIF_F_HW_VLAN_TX);
1059
1060         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
1061                 netdev->features |= NETIF_F_LRO;
1062
1063         netdev->irq = adapter->msix_entries[0].vector;
1064
1065         INIT_WORK(&adapter->tx_timeout_task, qlcnic_tx_timeout_task);
1066
1067         if (qlcnic_read_mac_addr(adapter))
1068                 dev_warn(&pdev->dev, "failed to read mac addr\n");
1069
1070         netif_carrier_off(netdev);
1071         netif_stop_queue(netdev);
1072
1073         err = register_netdev(netdev);
1074         if (err) {
1075                 dev_err(&pdev->dev, "failed to register net device\n");
1076                 return err;
1077         }
1078
1079         return 0;
1080 }
1081
1082 static int __devinit
1083 qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1084 {
1085         struct net_device *netdev = NULL;
1086         struct qlcnic_adapter *adapter = NULL;
1087         int err;
1088         int pci_func_id = PCI_FUNC(pdev->devfn);
1089         uint8_t revision_id;
1090
1091         err = pci_enable_device(pdev);
1092         if (err)
1093                 return err;
1094
1095         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1096                 err = -ENODEV;
1097                 goto err_out_disable_pdev;
1098         }
1099
1100         err = pci_request_regions(pdev, qlcnic_driver_name);
1101         if (err)
1102                 goto err_out_disable_pdev;
1103
1104         pci_set_master(pdev);
1105
1106         netdev = alloc_etherdev(sizeof(struct qlcnic_adapter));
1107         if (!netdev) {
1108                 dev_err(&pdev->dev, "failed to allocate net_device\n");
1109                 err = -ENOMEM;
1110                 goto err_out_free_res;
1111         }
1112
1113         SET_NETDEV_DEV(netdev, &pdev->dev);
1114
1115         adapter = netdev_priv(netdev);
1116         adapter->netdev  = netdev;
1117         adapter->pdev    = pdev;
1118         adapter->ahw.pci_func  = pci_func_id;
1119
1120         revision_id = pdev->revision;
1121         adapter->ahw.revision_id = revision_id;
1122
1123         rwlock_init(&adapter->ahw.crb_lock);
1124         mutex_init(&adapter->ahw.mem_lock);
1125
1126         spin_lock_init(&adapter->tx_clean_lock);
1127         INIT_LIST_HEAD(&adapter->mac_list);
1128
1129         err = qlcnic_setup_pci_map(adapter);
1130         if (err)
1131                 goto err_out_free_netdev;
1132
1133         /* This will be reset for mezz cards  */
1134         adapter->portnum = pci_func_id;
1135
1136         err = qlcnic_get_board_info(adapter);
1137         if (err) {
1138                 dev_err(&pdev->dev, "Error getting board config info.\n");
1139                 goto err_out_iounmap;
1140         }
1141
1142
1143         err = qlcnic_start_firmware(adapter);
1144         if (err)
1145                 goto err_out_decr_ref;
1146
1147         /*
1148          * See if the firmware gave us a virtual-physical port mapping.
1149          */
1150         adapter->physical_port = adapter->portnum;
1151
1152         qlcnic_clear_stats(adapter);
1153
1154         qlcnic_setup_intr(adapter);
1155
1156         err = qlcnic_setup_netdev(adapter, netdev);
1157         if (err)
1158                 goto err_out_disable_msi;
1159
1160         pci_set_drvdata(pdev, adapter);
1161
1162         qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
1163
1164         switch (adapter->ahw.port_type) {
1165         case QLCNIC_GBE:
1166                 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1167                                 adapter->netdev->name);
1168                 break;
1169         case QLCNIC_XGBE:
1170                 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1171                                 adapter->netdev->name);
1172                 break;
1173         }
1174
1175         qlcnic_create_diag_entries(adapter);
1176
1177         return 0;
1178
1179 err_out_disable_msi:
1180         qlcnic_teardown_intr(adapter);
1181
1182 err_out_decr_ref:
1183         qlcnic_clr_all_drv_state(adapter);
1184
1185 err_out_iounmap:
1186         qlcnic_cleanup_pci_map(adapter);
1187
1188 err_out_free_netdev:
1189         free_netdev(netdev);
1190
1191 err_out_free_res:
1192         pci_release_regions(pdev);
1193
1194 err_out_disable_pdev:
1195         pci_set_drvdata(pdev, NULL);
1196         pci_disable_device(pdev);
1197         return err;
1198 }
1199
1200 static void __devexit qlcnic_remove(struct pci_dev *pdev)
1201 {
1202         struct qlcnic_adapter *adapter;
1203         struct net_device *netdev;
1204
1205         adapter = pci_get_drvdata(pdev);
1206         if (adapter == NULL)
1207                 return;
1208
1209         netdev = adapter->netdev;
1210
1211         qlcnic_cancel_fw_work(adapter);
1212
1213         unregister_netdev(netdev);
1214
1215         cancel_work_sync(&adapter->tx_timeout_task);
1216
1217         qlcnic_detach(adapter);
1218
1219         qlcnic_clr_all_drv_state(adapter);
1220
1221         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1222
1223         qlcnic_teardown_intr(adapter);
1224
1225         qlcnic_remove_diag_entries(adapter);
1226
1227         qlcnic_cleanup_pci_map(adapter);
1228
1229         qlcnic_release_firmware(adapter);
1230
1231         pci_release_regions(pdev);
1232         pci_disable_device(pdev);
1233         pci_set_drvdata(pdev, NULL);
1234
1235         free_netdev(netdev);
1236 }
1237 static int __qlcnic_shutdown(struct pci_dev *pdev)
1238 {
1239         struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
1240         struct net_device *netdev = adapter->netdev;
1241         int retval;
1242
1243         netif_device_detach(netdev);
1244
1245         qlcnic_cancel_fw_work(adapter);
1246
1247         if (netif_running(netdev))
1248                 qlcnic_down(adapter, netdev);
1249
1250         cancel_work_sync(&adapter->tx_timeout_task);
1251
1252         qlcnic_detach(adapter);
1253
1254         qlcnic_clr_all_drv_state(adapter);
1255
1256         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1257
1258         retval = pci_save_state(pdev);
1259         if (retval)
1260                 return retval;
1261
1262         if (qlcnic_wol_supported(adapter)) {
1263                 pci_enable_wake(pdev, PCI_D3cold, 1);
1264                 pci_enable_wake(pdev, PCI_D3hot, 1);
1265         }
1266
1267         return 0;
1268 }
1269
1270 static void qlcnic_shutdown(struct pci_dev *pdev)
1271 {
1272         if (__qlcnic_shutdown(pdev))
1273                 return;
1274
1275         pci_disable_device(pdev);
1276 }
1277
1278 #ifdef CONFIG_PM
1279 static int
1280 qlcnic_suspend(struct pci_dev *pdev, pm_message_t state)
1281 {
1282         int retval;
1283
1284         retval = __qlcnic_shutdown(pdev);
1285         if (retval)
1286                 return retval;
1287
1288         pci_set_power_state(pdev, pci_choose_state(pdev, state));
1289         return 0;
1290 }
1291
1292 static int
1293 qlcnic_resume(struct pci_dev *pdev)
1294 {
1295         struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
1296         struct net_device *netdev = adapter->netdev;
1297         int err;
1298
1299         err = pci_enable_device(pdev);
1300         if (err)
1301                 return err;
1302
1303         pci_set_power_state(pdev, PCI_D0);
1304         pci_set_master(pdev);
1305         pci_restore_state(pdev);
1306
1307         adapter->ahw.crb_win = -1;
1308         adapter->ahw.ocm_win = -1;
1309
1310         err = qlcnic_start_firmware(adapter);
1311         if (err) {
1312                 dev_err(&pdev->dev, "failed to start firmware\n");
1313                 return err;
1314         }
1315
1316         if (netif_running(netdev)) {
1317                 err = qlcnic_attach(adapter);
1318                 if (err)
1319                         goto err_out;
1320
1321                 err = qlcnic_up(adapter, netdev);
1322                 if (err)
1323                         goto err_out_detach;
1324
1325
1326                 qlcnic_config_indev_addr(netdev, NETDEV_UP);
1327         }
1328
1329         netif_device_attach(netdev);
1330         qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
1331         return 0;
1332
1333 err_out_detach:
1334         qlcnic_detach(adapter);
1335 err_out:
1336         qlcnic_clr_all_drv_state(adapter);
1337         return err;
1338 }
1339 #endif
1340
1341 static int qlcnic_open(struct net_device *netdev)
1342 {
1343         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1344         int err;
1345
1346         if (adapter->driver_mismatch)
1347                 return -EIO;
1348
1349         err = qlcnic_attach(adapter);
1350         if (err)
1351                 return err;
1352
1353         err = __qlcnic_up(adapter, netdev);
1354         if (err)
1355                 goto err_out;
1356
1357         netif_start_queue(netdev);
1358
1359         return 0;
1360
1361 err_out:
1362         qlcnic_detach(adapter);
1363         return err;
1364 }
1365
1366 /*
1367  * qlcnic_close - Disables a network interface entry point
1368  */
1369 static int qlcnic_close(struct net_device *netdev)
1370 {
1371         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1372
1373         __qlcnic_down(adapter, netdev);
1374         return 0;
1375 }
1376
1377 static void
1378 qlcnic_tso_check(struct net_device *netdev,
1379                 struct qlcnic_host_tx_ring *tx_ring,
1380                 struct cmd_desc_type0 *first_desc,
1381                 struct sk_buff *skb)
1382 {
1383         u8 opcode = TX_ETHER_PKT;
1384         __be16 protocol = skb->protocol;
1385         u16 flags = 0, vid = 0;
1386         u32 producer;
1387         int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1388         struct cmd_desc_type0 *hwdesc;
1389         struct vlan_ethhdr *vh;
1390         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1391
1392         if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1393
1394                 vh = (struct vlan_ethhdr *)skb->data;
1395                 protocol = vh->h_vlan_encapsulated_proto;
1396                 flags = FLAGS_VLAN_TAGGED;
1397
1398         } else if (vlan_tx_tag_present(skb)) {
1399
1400                 flags = FLAGS_VLAN_OOB;
1401                 vid = vlan_tx_tag_get(skb);
1402                 qlcnic_set_tx_vlan_tci(first_desc, vid);
1403                 vlan_oob = 1;
1404         }
1405
1406         if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1407                         skb_shinfo(skb)->gso_size > 0) {
1408
1409                 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1410
1411                 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1412                 first_desc->total_hdr_length = hdr_len;
1413                 if (vlan_oob) {
1414                         first_desc->total_hdr_length += VLAN_HLEN;
1415                         first_desc->tcp_hdr_offset = VLAN_HLEN;
1416                         first_desc->ip_hdr_offset = VLAN_HLEN;
1417                         /* Only in case of TSO on vlan device */
1418                         flags |= FLAGS_VLAN_TAGGED;
1419                 }
1420
1421                 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1422                                 TX_TCP_LSO6 : TX_TCP_LSO;
1423                 tso = 1;
1424
1425         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1426                 u8 l4proto;
1427
1428                 if (protocol == cpu_to_be16(ETH_P_IP)) {
1429                         l4proto = ip_hdr(skb)->protocol;
1430
1431                         if (l4proto == IPPROTO_TCP)
1432                                 opcode = TX_TCP_PKT;
1433                         else if (l4proto == IPPROTO_UDP)
1434                                 opcode = TX_UDP_PKT;
1435                 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1436                         l4proto = ipv6_hdr(skb)->nexthdr;
1437
1438                         if (l4proto == IPPROTO_TCP)
1439                                 opcode = TX_TCPV6_PKT;
1440                         else if (l4proto == IPPROTO_UDP)
1441                                 opcode = TX_UDPV6_PKT;
1442                 }
1443         }
1444
1445         first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1446         first_desc->ip_hdr_offset += skb_network_offset(skb);
1447         qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
1448
1449         if (!tso)
1450                 return;
1451
1452         /* For LSO, we need to copy the MAC/IP/TCP headers into
1453          * the descriptor ring
1454          */
1455         producer = tx_ring->producer;
1456         copied = 0;
1457         offset = 2;
1458
1459         if (vlan_oob) {
1460                 /* Create a TSO vlan header template for firmware */
1461
1462                 hwdesc = &tx_ring->desc_head[producer];
1463                 tx_ring->cmd_buf_arr[producer].skb = NULL;
1464
1465                 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1466                                 hdr_len + VLAN_HLEN);
1467
1468                 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1469                 skb_copy_from_linear_data(skb, vh, 12);
1470                 vh->h_vlan_proto = htons(ETH_P_8021Q);
1471                 vh->h_vlan_TCI = htons(vid);
1472                 skb_copy_from_linear_data_offset(skb, 12,
1473                                 (char *)vh + 16, copy_len - 16);
1474
1475                 copied = copy_len - VLAN_HLEN;
1476                 offset = 0;
1477
1478                 producer = get_next_index(producer, tx_ring->num_desc);
1479         }
1480
1481         while (copied < hdr_len) {
1482
1483                 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1484                                 (hdr_len - copied));
1485
1486                 hwdesc = &tx_ring->desc_head[producer];
1487                 tx_ring->cmd_buf_arr[producer].skb = NULL;
1488
1489                 skb_copy_from_linear_data_offset(skb, copied,
1490                                  (char *)hwdesc + offset, copy_len);
1491
1492                 copied += copy_len;
1493                 offset = 0;
1494
1495                 producer = get_next_index(producer, tx_ring->num_desc);
1496         }
1497
1498         tx_ring->producer = producer;
1499         barrier();
1500         adapter->stats.lso_frames++;
1501 }
1502
1503 static int
1504 qlcnic_map_tx_skb(struct pci_dev *pdev,
1505                 struct sk_buff *skb, struct qlcnic_cmd_buffer *pbuf)
1506 {
1507         struct qlcnic_skb_frag *nf;
1508         struct skb_frag_struct *frag;
1509         int i, nr_frags;
1510         dma_addr_t map;
1511
1512         nr_frags = skb_shinfo(skb)->nr_frags;
1513         nf = &pbuf->frag_array[0];
1514
1515         map = pci_map_single(pdev, skb->data,
1516                         skb_headlen(skb), PCI_DMA_TODEVICE);
1517         if (pci_dma_mapping_error(pdev, map))
1518                 goto out_err;
1519
1520         nf->dma = map;
1521         nf->length = skb_headlen(skb);
1522
1523         for (i = 0; i < nr_frags; i++) {
1524                 frag = &skb_shinfo(skb)->frags[i];
1525                 nf = &pbuf->frag_array[i+1];
1526
1527                 map = pci_map_page(pdev, frag->page, frag->page_offset,
1528                                 frag->size, PCI_DMA_TODEVICE);
1529                 if (pci_dma_mapping_error(pdev, map))
1530                         goto unwind;
1531
1532                 nf->dma = map;
1533                 nf->length = frag->size;
1534         }
1535
1536         return 0;
1537
1538 unwind:
1539         while (--i >= 0) {
1540                 nf = &pbuf->frag_array[i+1];
1541                 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
1542         }
1543
1544         nf = &pbuf->frag_array[0];
1545         pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1546
1547 out_err:
1548         return -ENOMEM;
1549 }
1550
1551 static inline void
1552 qlcnic_clear_cmddesc(u64 *desc)
1553 {
1554         desc[0] = 0ULL;
1555         desc[2] = 0ULL;
1556 }
1557
1558 netdev_tx_t
1559 qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1560 {
1561         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1562         struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
1563         struct qlcnic_cmd_buffer *pbuf;
1564         struct qlcnic_skb_frag *buffrag;
1565         struct cmd_desc_type0 *hwdesc, *first_desc;
1566         struct pci_dev *pdev;
1567         int i, k;
1568
1569         u32 producer;
1570         int frag_count, no_of_desc;
1571         u32 num_txd = tx_ring->num_desc;
1572
1573         frag_count = skb_shinfo(skb)->nr_frags + 1;
1574
1575         /* 4 fragments per cmd des */
1576         no_of_desc = (frag_count + 3) >> 2;
1577
1578         if (unlikely(no_of_desc + 2 > qlcnic_tx_avail(tx_ring))) {
1579                 netif_stop_queue(netdev);
1580                 adapter->stats.xmit_off++;
1581                 return NETDEV_TX_BUSY;
1582         }
1583
1584         producer = tx_ring->producer;
1585         pbuf = &tx_ring->cmd_buf_arr[producer];
1586
1587         pdev = adapter->pdev;
1588
1589         if (qlcnic_map_tx_skb(pdev, skb, pbuf))
1590                 goto drop_packet;
1591
1592         pbuf->skb = skb;
1593         pbuf->frag_count = frag_count;
1594
1595         first_desc = hwdesc = &tx_ring->desc_head[producer];
1596         qlcnic_clear_cmddesc((u64 *)hwdesc);
1597
1598         qlcnic_set_tx_frags_len(first_desc, frag_count, skb->len);
1599         qlcnic_set_tx_port(first_desc, adapter->portnum);
1600
1601         for (i = 0; i < frag_count; i++) {
1602
1603                 k = i % 4;
1604
1605                 if ((k == 0) && (i > 0)) {
1606                         /* move to next desc.*/
1607                         producer = get_next_index(producer, num_txd);
1608                         hwdesc = &tx_ring->desc_head[producer];
1609                         qlcnic_clear_cmddesc((u64 *)hwdesc);
1610                         tx_ring->cmd_buf_arr[producer].skb = NULL;
1611                 }
1612
1613                 buffrag = &pbuf->frag_array[i];
1614
1615                 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
1616                 switch (k) {
1617                 case 0:
1618                         hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1619                         break;
1620                 case 1:
1621                         hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
1622                         break;
1623                 case 2:
1624                         hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
1625                         break;
1626                 case 3:
1627                         hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
1628                         break;
1629                 }
1630         }
1631
1632         tx_ring->producer = get_next_index(producer, num_txd);
1633
1634         qlcnic_tso_check(netdev, tx_ring, first_desc, skb);
1635
1636         qlcnic_update_cmd_producer(adapter, tx_ring);
1637
1638         adapter->stats.txbytes += skb->len;
1639         adapter->stats.xmitcalled++;
1640
1641         return NETDEV_TX_OK;
1642
1643 drop_packet:
1644         adapter->stats.txdropped++;
1645         dev_kfree_skb_any(skb);
1646         return NETDEV_TX_OK;
1647 }
1648
1649 static int qlcnic_check_temp(struct qlcnic_adapter *adapter)
1650 {
1651         struct net_device *netdev = adapter->netdev;
1652         u32 temp, temp_state, temp_val;
1653         int rv = 0;
1654
1655         temp = QLCRD32(adapter, CRB_TEMP_STATE);
1656
1657         temp_state = qlcnic_get_temp_state(temp);
1658         temp_val = qlcnic_get_temp_val(temp);
1659
1660         if (temp_state == QLCNIC_TEMP_PANIC) {
1661                 dev_err(&netdev->dev,
1662                        "Device temperature %d degrees C exceeds"
1663                        " maximum allowed. Hardware has been shut down.\n",
1664                        temp_val);
1665                 rv = 1;
1666         } else if (temp_state == QLCNIC_TEMP_WARN) {
1667                 if (adapter->temp == QLCNIC_TEMP_NORMAL) {
1668                         dev_err(&netdev->dev,
1669                                "Device temperature %d degrees C "
1670                                "exceeds operating range."
1671                                " Immediate action needed.\n",
1672                                temp_val);
1673                 }
1674         } else {
1675                 if (adapter->temp == QLCNIC_TEMP_WARN) {
1676                         dev_info(&netdev->dev,
1677                                "Device temperature is now %d degrees C"
1678                                " in normal range.\n", temp_val);
1679                 }
1680         }
1681         adapter->temp = temp_state;
1682         return rv;
1683 }
1684
1685 void qlcnic_advert_link_change(struct qlcnic_adapter *adapter, int linkup)
1686 {
1687         struct net_device *netdev = adapter->netdev;
1688
1689         if (adapter->ahw.linkup && !linkup) {
1690                 dev_info(&netdev->dev, "NIC Link is down\n");
1691                 adapter->ahw.linkup = 0;
1692                 if (netif_running(netdev)) {
1693                         netif_carrier_off(netdev);
1694                         netif_stop_queue(netdev);
1695                 }
1696         } else if (!adapter->ahw.linkup && linkup) {
1697                 dev_info(&netdev->dev, "NIC Link is up\n");
1698                 adapter->ahw.linkup = 1;
1699                 if (netif_running(netdev)) {
1700                         netif_carrier_on(netdev);
1701                         netif_wake_queue(netdev);
1702                 }
1703         }
1704 }
1705
1706 static void qlcnic_tx_timeout(struct net_device *netdev)
1707 {
1708         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1709
1710         if (test_bit(__QLCNIC_RESETTING, &adapter->state))
1711                 return;
1712
1713         dev_err(&netdev->dev, "transmit timeout, resetting.\n");
1714         schedule_work(&adapter->tx_timeout_task);
1715 }
1716
1717 static void qlcnic_tx_timeout_task(struct work_struct *work)
1718 {
1719         struct qlcnic_adapter *adapter =
1720                 container_of(work, struct qlcnic_adapter, tx_timeout_task);
1721
1722         if (!netif_running(adapter->netdev))
1723                 return;
1724
1725         if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
1726                 return;
1727
1728         if (++adapter->tx_timeo_cnt >= QLCNIC_MAX_TX_TIMEOUTS)
1729                 goto request_reset;
1730
1731         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1732         if (!qlcnic_reset_context(adapter)) {
1733                 adapter->netdev->trans_start = jiffies;
1734                 return;
1735
1736                 /* context reset failed, fall through for fw reset */
1737         }
1738
1739 request_reset:
1740         adapter->need_fw_reset = 1;
1741         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1742 }
1743
1744 static struct net_device_stats *qlcnic_get_stats(struct net_device *netdev)
1745 {
1746         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1747         struct net_device_stats *stats = &netdev->stats;
1748
1749         memset(stats, 0, sizeof(*stats));
1750
1751         stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
1752         stats->tx_packets = adapter->stats.xmitfinished;
1753         stats->rx_bytes = adapter->stats.rxbytes;
1754         stats->tx_bytes = adapter->stats.txbytes;
1755         stats->rx_dropped = adapter->stats.rxdropped;
1756         stats->tx_dropped = adapter->stats.txdropped;
1757
1758         return stats;
1759 }
1760
1761 static irqreturn_t qlcnic_clear_legacy_intr(struct qlcnic_adapter *adapter)
1762 {
1763         u32 status;
1764
1765         status = readl(adapter->isr_int_vec);
1766
1767         if (!(status & adapter->int_vec_bit))
1768                 return IRQ_NONE;
1769
1770         /* check interrupt state machine, to be sure */
1771         status = readl(adapter->crb_int_state_reg);
1772         if (!ISR_LEGACY_INT_TRIGGERED(status))
1773                 return IRQ_NONE;
1774
1775         writel(0xffffffff, adapter->tgt_status_reg);
1776         /* read twice to ensure write is flushed */
1777         readl(adapter->isr_int_vec);
1778         readl(adapter->isr_int_vec);
1779
1780         return IRQ_HANDLED;
1781 }
1782
1783 static irqreturn_t qlcnic_tmp_intr(int irq, void *data)
1784 {
1785         struct qlcnic_host_sds_ring *sds_ring = data;
1786         struct qlcnic_adapter *adapter = sds_ring->adapter;
1787
1788         if (adapter->flags & QLCNIC_MSIX_ENABLED)
1789                 goto done;
1790         else if (adapter->flags & QLCNIC_MSI_ENABLED) {
1791                 writel(0xffffffff, adapter->tgt_status_reg);
1792                 goto done;
1793         }
1794
1795         if (qlcnic_clear_legacy_intr(adapter) == IRQ_NONE)
1796                 return IRQ_NONE;
1797
1798 done:
1799         adapter->diag_cnt++;
1800         qlcnic_enable_int(sds_ring);
1801         return IRQ_HANDLED;
1802 }
1803
1804 static irqreturn_t qlcnic_intr(int irq, void *data)
1805 {
1806         struct qlcnic_host_sds_ring *sds_ring = data;
1807         struct qlcnic_adapter *adapter = sds_ring->adapter;
1808
1809         if (qlcnic_clear_legacy_intr(adapter) == IRQ_NONE)
1810                 return IRQ_NONE;
1811
1812         napi_schedule(&sds_ring->napi);
1813
1814         return IRQ_HANDLED;
1815 }
1816
1817 static irqreturn_t qlcnic_msi_intr(int irq, void *data)
1818 {
1819         struct qlcnic_host_sds_ring *sds_ring = data;
1820         struct qlcnic_adapter *adapter = sds_ring->adapter;
1821
1822         /* clear interrupt */
1823         writel(0xffffffff, adapter->tgt_status_reg);
1824
1825         napi_schedule(&sds_ring->napi);
1826         return IRQ_HANDLED;
1827 }
1828
1829 static irqreturn_t qlcnic_msix_intr(int irq, void *data)
1830 {
1831         struct qlcnic_host_sds_ring *sds_ring = data;
1832
1833         napi_schedule(&sds_ring->napi);
1834         return IRQ_HANDLED;
1835 }
1836
1837 static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter)
1838 {
1839         u32 sw_consumer, hw_consumer;
1840         int count = 0, i;
1841         struct qlcnic_cmd_buffer *buffer;
1842         struct pci_dev *pdev = adapter->pdev;
1843         struct net_device *netdev = adapter->netdev;
1844         struct qlcnic_skb_frag *frag;
1845         int done;
1846         struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
1847
1848         if (!spin_trylock(&adapter->tx_clean_lock))
1849                 return 1;
1850
1851         sw_consumer = tx_ring->sw_consumer;
1852         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1853
1854         while (sw_consumer != hw_consumer) {
1855                 buffer = &tx_ring->cmd_buf_arr[sw_consumer];
1856                 if (buffer->skb) {
1857                         frag = &buffer->frag_array[0];
1858                         pci_unmap_single(pdev, frag->dma, frag->length,
1859                                          PCI_DMA_TODEVICE);
1860                         frag->dma = 0ULL;
1861                         for (i = 1; i < buffer->frag_count; i++) {
1862                                 frag++;
1863                                 pci_unmap_page(pdev, frag->dma, frag->length,
1864                                                PCI_DMA_TODEVICE);
1865                                 frag->dma = 0ULL;
1866                         }
1867
1868                         adapter->stats.xmitfinished++;
1869                         dev_kfree_skb_any(buffer->skb);
1870                         buffer->skb = NULL;
1871                 }
1872
1873                 sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
1874                 if (++count >= MAX_STATUS_HANDLE)
1875                         break;
1876         }
1877
1878         if (count && netif_running(netdev)) {
1879                 tx_ring->sw_consumer = sw_consumer;
1880
1881                 smp_mb();
1882
1883                 if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev)) {
1884                         __netif_tx_lock(tx_ring->txq, smp_processor_id());
1885                         if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) {
1886                                 netif_wake_queue(netdev);
1887                                 adapter->tx_timeo_cnt = 0;
1888                                 adapter->stats.xmit_on++;
1889                         }
1890                         __netif_tx_unlock(tx_ring->txq);
1891                 }
1892         }
1893         /*
1894          * If everything is freed up to consumer then check if the ring is full
1895          * If the ring is full then check if more needs to be freed and
1896          * schedule the call back again.
1897          *
1898          * This happens when there are 2 CPUs. One could be freeing and the
1899          * other filling it. If the ring is full when we get out of here and
1900          * the card has already interrupted the host then the host can miss the
1901          * interrupt.
1902          *
1903          * There is still a possible race condition and the host could miss an
1904          * interrupt. The card has to take care of this.
1905          */
1906         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1907         done = (sw_consumer == hw_consumer);
1908         spin_unlock(&adapter->tx_clean_lock);
1909
1910         return done;
1911 }
1912
1913 static int qlcnic_poll(struct napi_struct *napi, int budget)
1914 {
1915         struct qlcnic_host_sds_ring *sds_ring =
1916                 container_of(napi, struct qlcnic_host_sds_ring, napi);
1917
1918         struct qlcnic_adapter *adapter = sds_ring->adapter;
1919
1920         int tx_complete;
1921         int work_done;
1922
1923         tx_complete = qlcnic_process_cmd_ring(adapter);
1924
1925         work_done = qlcnic_process_rcv_ring(sds_ring, budget);
1926
1927         if ((work_done < budget) && tx_complete) {
1928                 napi_complete(&sds_ring->napi);
1929                 if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
1930                         qlcnic_enable_int(sds_ring);
1931         }
1932
1933         return work_done;
1934 }
1935
1936 #ifdef CONFIG_NET_POLL_CONTROLLER
1937 static void qlcnic_poll_controller(struct net_device *netdev)
1938 {
1939         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1940         disable_irq(adapter->irq);
1941         qlcnic_intr(adapter->irq, adapter);
1942         enable_irq(adapter->irq);
1943 }
1944 #endif
1945
1946 static void
1947 qlcnic_set_drv_state(struct qlcnic_adapter *adapter, int state)
1948 {
1949         u32  val;
1950
1951         WARN_ON(state != QLCNIC_DEV_NEED_RESET &&
1952                         state != QLCNIC_DEV_NEED_QUISCENT);
1953
1954         if (qlcnic_api_lock(adapter))
1955                 return ;
1956
1957         val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
1958
1959         if (state == QLCNIC_DEV_NEED_RESET)
1960                 val |= ((u32)0x1 << (adapter->portnum * 4));
1961         else if (state == QLCNIC_DEV_NEED_QUISCENT)
1962                 val |= ((u32)0x1 << ((adapter->portnum * 4) + 1));
1963
1964         QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
1965
1966         qlcnic_api_unlock(adapter);
1967 }
1968
1969 static int
1970 qlcnic_clr_drv_state(struct qlcnic_adapter *adapter)
1971 {
1972         u32  val;
1973
1974         if (qlcnic_api_lock(adapter))
1975                 return -EBUSY;
1976
1977         val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
1978         val &= ~((u32)0x3 << (adapter->portnum * 4));
1979         QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
1980
1981         qlcnic_api_unlock(adapter);
1982
1983         return 0;
1984 }
1985
1986 static void
1987 qlcnic_clr_all_drv_state(struct qlcnic_adapter *adapter)
1988 {
1989         u32  val;
1990
1991         if (qlcnic_api_lock(adapter))
1992                 goto err;
1993
1994         val = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
1995         val &= ~((u32)0x1 << (adapter->portnum * 4));
1996         QLCWR32(adapter, QLCNIC_CRB_DEV_REF_COUNT, val);
1997
1998         if (!(val & 0x11111111))
1999                 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_COLD);
2000
2001         val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2002         val &= ~((u32)0x3 << (adapter->portnum * 4));
2003         QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2004
2005         qlcnic_api_unlock(adapter);
2006 err:
2007         adapter->fw_fail_cnt = 0;
2008         clear_bit(__QLCNIC_START_FW, &adapter->state);
2009         clear_bit(__QLCNIC_RESETTING, &adapter->state);
2010 }
2011
2012 static int
2013 qlcnic_check_drv_state(struct qlcnic_adapter *adapter)
2014 {
2015         int act, state;
2016
2017         state = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2018         act = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
2019
2020         if (((state & 0x11111111) == (act & 0x11111111)) ||
2021                         ((act & 0x11111111) == ((state >> 1) & 0x11111111)))
2022                 return 0;
2023         else
2024                 return 1;
2025 }
2026
2027 static int
2028 qlcnic_can_start_firmware(struct qlcnic_adapter *adapter)
2029 {
2030         u32 val, prev_state;
2031         int cnt = 0;
2032         int portnum = adapter->portnum;
2033
2034         if (qlcnic_api_lock(adapter))
2035                 return -1;
2036
2037         val = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
2038         if (!(val & ((int)0x1 << (portnum * 4)))) {
2039                 val |= ((u32)0x1 << (portnum * 4));
2040                 QLCWR32(adapter, QLCNIC_CRB_DEV_REF_COUNT, val);
2041         } else if (test_and_clear_bit(__QLCNIC_START_FW, &adapter->state)) {
2042                 goto start_fw;
2043         }
2044
2045         prev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2046
2047         switch (prev_state) {
2048         case QLCNIC_DEV_COLD:
2049 start_fw:
2050                 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_INITALIZING);
2051                 qlcnic_api_unlock(adapter);
2052                 return 1;
2053
2054         case QLCNIC_DEV_READY:
2055                 qlcnic_api_unlock(adapter);
2056                 return 0;
2057
2058         case QLCNIC_DEV_NEED_RESET:
2059                 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2060                 val |= ((u32)0x1 << (portnum * 4));
2061                 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2062                 break;
2063
2064         case QLCNIC_DEV_NEED_QUISCENT:
2065                 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2066                 val |= ((u32)0x1 << ((portnum * 4) + 1));
2067                 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2068                 break;
2069
2070         case QLCNIC_DEV_FAILED:
2071                 qlcnic_api_unlock(adapter);
2072                 return -1;
2073         }
2074
2075         qlcnic_api_unlock(adapter);
2076         msleep(1000);
2077         while ((QLCRD32(adapter, QLCNIC_CRB_DEV_STATE) != QLCNIC_DEV_READY) &&
2078                         ++cnt < 20)
2079                 msleep(1000);
2080
2081         if (cnt >= 20)
2082                 return -1;
2083
2084         if (qlcnic_api_lock(adapter))
2085                 return -1;
2086
2087         val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2088         val &= ~((u32)0x3 << (portnum * 4));
2089         QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2090
2091         qlcnic_api_unlock(adapter);
2092
2093         return 0;
2094 }
2095
2096 static void
2097 qlcnic_fwinit_work(struct work_struct *work)
2098 {
2099         struct qlcnic_adapter *adapter = container_of(work,
2100                         struct qlcnic_adapter, fw_work.work);
2101         int dev_state;
2102
2103         if (++adapter->fw_wait_cnt > FW_POLL_THRESH)
2104                 goto err_ret;
2105
2106         if (test_bit(__QLCNIC_START_FW, &adapter->state)) {
2107
2108                 if (qlcnic_check_drv_state(adapter)) {
2109                         qlcnic_schedule_work(adapter,
2110                                         qlcnic_fwinit_work, FW_POLL_DELAY);
2111                         return;
2112                 }
2113
2114                 if (!qlcnic_start_firmware(adapter)) {
2115                         qlcnic_schedule_work(adapter, qlcnic_attach_work, 0);
2116                         return;
2117                 }
2118
2119                 goto err_ret;
2120         }
2121
2122         dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2123         switch (dev_state) {
2124         case QLCNIC_DEV_READY:
2125                 if (!qlcnic_start_firmware(adapter)) {
2126                         qlcnic_schedule_work(adapter, qlcnic_attach_work, 0);
2127                         return;
2128                 }
2129         case QLCNIC_DEV_FAILED:
2130                 break;
2131
2132         default:
2133                 qlcnic_schedule_work(adapter,
2134                         qlcnic_fwinit_work, 2 * FW_POLL_DELAY);
2135                 return;
2136         }
2137
2138 err_ret:
2139         qlcnic_clr_all_drv_state(adapter);
2140 }
2141
2142 static void
2143 qlcnic_detach_work(struct work_struct *work)
2144 {
2145         struct qlcnic_adapter *adapter = container_of(work,
2146                         struct qlcnic_adapter, fw_work.work);
2147         struct net_device *netdev = adapter->netdev;
2148         u32 status;
2149
2150         netif_device_detach(netdev);
2151
2152         qlcnic_down(adapter, netdev);
2153
2154         rtnl_lock();
2155         qlcnic_detach(adapter);
2156         rtnl_unlock();
2157
2158         status = QLCRD32(adapter, QLCNIC_PEG_HALT_STATUS1);
2159
2160         if (status & QLCNIC_RCODE_FATAL_ERROR)
2161                 goto err_ret;
2162
2163         if (adapter->temp == QLCNIC_TEMP_PANIC)
2164                 goto err_ret;
2165
2166         qlcnic_set_drv_state(adapter, adapter->dev_state);
2167
2168         adapter->fw_wait_cnt = 0;
2169
2170         qlcnic_schedule_work(adapter, qlcnic_fwinit_work, FW_POLL_DELAY);
2171
2172         return;
2173
2174 err_ret:
2175         qlcnic_clr_all_drv_state(adapter);
2176
2177 }
2178
2179 static void
2180 qlcnic_dev_request_reset(struct qlcnic_adapter *adapter)
2181 {
2182         u32 state;
2183
2184         if (qlcnic_api_lock(adapter))
2185                 return;
2186
2187         state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2188
2189         if (state != QLCNIC_DEV_INITALIZING && state != QLCNIC_DEV_NEED_RESET) {
2190                 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_NEED_RESET);
2191                 set_bit(__QLCNIC_START_FW, &adapter->state);
2192         }
2193
2194         qlcnic_api_unlock(adapter);
2195 }
2196
2197 static void
2198 qlcnic_schedule_work(struct qlcnic_adapter *adapter,
2199                 work_func_t func, int delay)
2200 {
2201         INIT_DELAYED_WORK(&adapter->fw_work, func);
2202         schedule_delayed_work(&adapter->fw_work, round_jiffies_relative(delay));
2203 }
2204
2205 static void
2206 qlcnic_cancel_fw_work(struct qlcnic_adapter *adapter)
2207 {
2208         while (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
2209                 msleep(10);
2210
2211         cancel_delayed_work_sync(&adapter->fw_work);
2212 }
2213
2214 static void
2215 qlcnic_attach_work(struct work_struct *work)
2216 {
2217         struct qlcnic_adapter *adapter = container_of(work,
2218                                 struct qlcnic_adapter, fw_work.work);
2219         struct net_device *netdev = adapter->netdev;
2220         int err;
2221
2222         if (netif_running(netdev)) {
2223                 err = qlcnic_attach(adapter);
2224                 if (err)
2225                         goto done;
2226
2227                 err = qlcnic_up(adapter, netdev);
2228                 if (err) {
2229                         qlcnic_detach(adapter);
2230                         goto done;
2231                 }
2232
2233                 qlcnic_config_indev_addr(netdev, NETDEV_UP);
2234         }
2235
2236         netif_device_attach(netdev);
2237
2238 done:
2239         adapter->fw_fail_cnt = 0;
2240         clear_bit(__QLCNIC_RESETTING, &adapter->state);
2241
2242         if (!qlcnic_clr_drv_state(adapter))
2243                 qlcnic_schedule_work(adapter, qlcnic_fw_poll_work,
2244                                                         FW_POLL_DELAY);
2245 }
2246
2247 static int
2248 qlcnic_check_health(struct qlcnic_adapter *adapter)
2249 {
2250         u32 state = 0, heartbit;
2251         struct net_device *netdev = adapter->netdev;
2252
2253         if (qlcnic_check_temp(adapter))
2254                 goto detach;
2255
2256         if (adapter->need_fw_reset) {
2257                 qlcnic_dev_request_reset(adapter);
2258                 goto detach;
2259         }
2260
2261         state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2262         if (state == QLCNIC_DEV_NEED_RESET || state == QLCNIC_DEV_NEED_QUISCENT)
2263                 adapter->need_fw_reset = 1;
2264
2265         heartbit = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
2266         if (heartbit != adapter->heartbit) {
2267                 adapter->heartbit = heartbit;
2268                 adapter->fw_fail_cnt = 0;
2269                 if (adapter->need_fw_reset)
2270                         goto detach;
2271                 return 0;
2272         }
2273
2274         if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2275                 return 0;
2276
2277         qlcnic_dev_request_reset(adapter);
2278
2279         clear_bit(__QLCNIC_FW_ATTACHED, &adapter->state);
2280
2281         dev_info(&netdev->dev, "firmware hang detected\n");
2282
2283 detach:
2284         adapter->dev_state = (state == QLCNIC_DEV_NEED_QUISCENT) ? state :
2285                 QLCNIC_DEV_NEED_RESET;
2286
2287         if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
2288                         !test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
2289                 qlcnic_schedule_work(adapter, qlcnic_detach_work, 0);
2290
2291         return 1;
2292 }
2293
2294 static void
2295 qlcnic_fw_poll_work(struct work_struct *work)
2296 {
2297         struct qlcnic_adapter *adapter = container_of(work,
2298                                 struct qlcnic_adapter, fw_work.work);
2299
2300         if (test_bit(__QLCNIC_RESETTING, &adapter->state))
2301                 goto reschedule;
2302
2303
2304         if (qlcnic_check_health(adapter))
2305                 return;
2306
2307 reschedule:
2308         qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
2309 }
2310
2311 static ssize_t
2312 qlcnic_store_bridged_mode(struct device *dev,
2313                 struct device_attribute *attr, const char *buf, size_t len)
2314 {
2315         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2316         unsigned long new;
2317         int ret = -EINVAL;
2318
2319         if (!(adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG))
2320                 goto err_out;
2321
2322         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
2323                 goto err_out;
2324
2325         if (strict_strtoul(buf, 2, &new))
2326                 goto err_out;
2327
2328         if (!qlcnic_config_bridged_mode(adapter, !!new))
2329                 ret = len;
2330
2331 err_out:
2332         return ret;
2333 }
2334
2335 static ssize_t
2336 qlcnic_show_bridged_mode(struct device *dev,
2337                 struct device_attribute *attr, char *buf)
2338 {
2339         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2340         int bridged_mode = 0;
2341
2342         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
2343                 bridged_mode = !!(adapter->flags & QLCNIC_BRIDGE_ENABLED);
2344
2345         return sprintf(buf, "%d\n", bridged_mode);
2346 }
2347
2348 static struct device_attribute dev_attr_bridged_mode = {
2349        .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2350        .show = qlcnic_show_bridged_mode,
2351        .store = qlcnic_store_bridged_mode,
2352 };
2353
2354 static ssize_t
2355 qlcnic_store_diag_mode(struct device *dev,
2356                 struct device_attribute *attr, const char *buf, size_t len)
2357 {
2358         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2359         unsigned long new;
2360
2361         if (strict_strtoul(buf, 2, &new))
2362                 return -EINVAL;
2363
2364         if (!!new != !!(adapter->flags & QLCNIC_DIAG_ENABLED))
2365                 adapter->flags ^= QLCNIC_DIAG_ENABLED;
2366
2367         return len;
2368 }
2369
2370 static ssize_t
2371 qlcnic_show_diag_mode(struct device *dev,
2372                 struct device_attribute *attr, char *buf)
2373 {
2374         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2375
2376         return sprintf(buf, "%d\n",
2377                         !!(adapter->flags & QLCNIC_DIAG_ENABLED));
2378 }
2379
2380 static struct device_attribute dev_attr_diag_mode = {
2381         .attr = {.name = "diag_mode", .mode = (S_IRUGO | S_IWUSR)},
2382         .show = qlcnic_show_diag_mode,
2383         .store = qlcnic_store_diag_mode,
2384 };
2385
2386 static int
2387 qlcnic_sysfs_validate_crb(struct qlcnic_adapter *adapter,
2388                 loff_t offset, size_t size)
2389 {
2390         if (!(adapter->flags & QLCNIC_DIAG_ENABLED))
2391                 return -EIO;
2392
2393         if ((size != 4) || (offset & 0x3))
2394                 return  -EINVAL;
2395
2396         if (offset < QLCNIC_PCI_CRBSPACE)
2397                 return -EINVAL;
2398
2399         return 0;
2400 }
2401
2402 static ssize_t
2403 qlcnic_sysfs_read_crb(struct kobject *kobj, struct bin_attribute *attr,
2404                 char *buf, loff_t offset, size_t size)
2405 {
2406         struct device *dev = container_of(kobj, struct device, kobj);
2407         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2408         u32 data;
2409         int ret;
2410
2411         ret = qlcnic_sysfs_validate_crb(adapter, offset, size);
2412         if (ret != 0)
2413                 return ret;
2414
2415         data = QLCRD32(adapter, offset);
2416         memcpy(buf, &data, size);
2417         return size;
2418 }
2419
2420 static ssize_t
2421 qlcnic_sysfs_write_crb(struct kobject *kobj, struct bin_attribute *attr,
2422                 char *buf, loff_t offset, size_t size)
2423 {
2424         struct device *dev = container_of(kobj, struct device, kobj);
2425         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2426         u32 data;
2427         int ret;
2428
2429         ret = qlcnic_sysfs_validate_crb(adapter, offset, size);
2430         if (ret != 0)
2431                 return ret;
2432
2433         memcpy(&data, buf, size);
2434         QLCWR32(adapter, offset, data);
2435         return size;
2436 }
2437
2438 static int
2439 qlcnic_sysfs_validate_mem(struct qlcnic_adapter *adapter,
2440                 loff_t offset, size_t size)
2441 {
2442         if (!(adapter->flags & QLCNIC_DIAG_ENABLED))
2443                 return -EIO;
2444
2445         if ((size != 8) || (offset & 0x7))
2446                 return  -EIO;
2447
2448         return 0;
2449 }
2450
2451 static ssize_t
2452 qlcnic_sysfs_read_mem(struct kobject *kobj, struct bin_attribute *attr,
2453                 char *buf, loff_t offset, size_t size)
2454 {
2455         struct device *dev = container_of(kobj, struct device, kobj);
2456         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2457         u64 data;
2458         int ret;
2459
2460         ret = qlcnic_sysfs_validate_mem(adapter, offset, size);
2461         if (ret != 0)
2462                 return ret;
2463
2464         if (qlcnic_pci_mem_read_2M(adapter, offset, &data))
2465                 return -EIO;
2466
2467         memcpy(buf, &data, size);
2468
2469         return size;
2470 }
2471
2472 static ssize_t
2473 qlcnic_sysfs_write_mem(struct kobject *kobj, struct bin_attribute *attr,
2474                 char *buf, loff_t offset, size_t size)
2475 {
2476         struct device *dev = container_of(kobj, struct device, kobj);
2477         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2478         u64 data;
2479         int ret;
2480
2481         ret = qlcnic_sysfs_validate_mem(adapter, offset, size);
2482         if (ret != 0)
2483                 return ret;
2484
2485         memcpy(&data, buf, size);
2486
2487         if (qlcnic_pci_mem_write_2M(adapter, offset, data))
2488                 return -EIO;
2489
2490         return size;
2491 }
2492
2493
2494 static struct bin_attribute bin_attr_crb = {
2495         .attr = {.name = "crb", .mode = (S_IRUGO | S_IWUSR)},
2496         .size = 0,
2497         .read = qlcnic_sysfs_read_crb,
2498         .write = qlcnic_sysfs_write_crb,
2499 };
2500
2501 static struct bin_attribute bin_attr_mem = {
2502         .attr = {.name = "mem", .mode = (S_IRUGO | S_IWUSR)},
2503         .size = 0,
2504         .read = qlcnic_sysfs_read_mem,
2505         .write = qlcnic_sysfs_write_mem,
2506 };
2507
2508 static void
2509 qlcnic_create_sysfs_entries(struct qlcnic_adapter *adapter)
2510 {
2511         struct device *dev = &adapter->pdev->dev;
2512
2513         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
2514                 if (device_create_file(dev, &dev_attr_bridged_mode))
2515                         dev_warn(dev,
2516                                 "failed to create bridged_mode sysfs entry\n");
2517 }
2518
2519 static void
2520 qlcnic_remove_sysfs_entries(struct qlcnic_adapter *adapter)
2521 {
2522         struct device *dev = &adapter->pdev->dev;
2523
2524         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
2525                 device_remove_file(dev, &dev_attr_bridged_mode);
2526 }
2527
2528 static void
2529 qlcnic_create_diag_entries(struct qlcnic_adapter *adapter)
2530 {
2531         struct device *dev = &adapter->pdev->dev;
2532
2533         if (device_create_file(dev, &dev_attr_diag_mode))
2534                 dev_info(dev, "failed to create diag_mode sysfs entry\n");
2535         if (device_create_bin_file(dev, &bin_attr_crb))
2536                 dev_info(dev, "failed to create crb sysfs entry\n");
2537         if (device_create_bin_file(dev, &bin_attr_mem))
2538                 dev_info(dev, "failed to create mem sysfs entry\n");
2539 }
2540
2541
2542 static void
2543 qlcnic_remove_diag_entries(struct qlcnic_adapter *adapter)
2544 {
2545         struct device *dev = &adapter->pdev->dev;
2546
2547         device_remove_file(dev, &dev_attr_diag_mode);
2548         device_remove_bin_file(dev, &bin_attr_crb);
2549         device_remove_bin_file(dev, &bin_attr_mem);
2550 }
2551
2552 #ifdef CONFIG_INET
2553
2554 #define is_qlcnic_netdev(dev) (dev->netdev_ops == &qlcnic_netdev_ops)
2555
2556 static int
2557 qlcnic_destip_supported(struct qlcnic_adapter *adapter)
2558 {
2559         if (adapter->ahw.cut_through)
2560                 return 0;
2561
2562         return 1;
2563 }
2564
2565 static void
2566 qlcnic_config_indev_addr(struct net_device *dev, unsigned long event)
2567 {
2568         struct in_device *indev;
2569         struct qlcnic_adapter *adapter = netdev_priv(dev);
2570
2571         if (!qlcnic_destip_supported(adapter))
2572                 return;
2573
2574         indev = in_dev_get(dev);
2575         if (!indev)
2576                 return;
2577
2578         for_ifa(indev) {
2579                 switch (event) {
2580                 case NETDEV_UP:
2581                         qlcnic_config_ipaddr(adapter,
2582                                         ifa->ifa_address, QLCNIC_IP_UP);
2583                         break;
2584                 case NETDEV_DOWN:
2585                         qlcnic_config_ipaddr(adapter,
2586                                         ifa->ifa_address, QLCNIC_IP_DOWN);
2587                         break;
2588                 default:
2589                         break;
2590                 }
2591         } endfor_ifa(indev);
2592
2593         in_dev_put(indev);
2594         return;
2595 }
2596
2597 static int qlcnic_netdev_event(struct notifier_block *this,
2598                                  unsigned long event, void *ptr)
2599 {
2600         struct qlcnic_adapter *adapter;
2601         struct net_device *dev = (struct net_device *)ptr;
2602
2603 recheck:
2604         if (dev == NULL)
2605                 goto done;
2606
2607         if (dev->priv_flags & IFF_802_1Q_VLAN) {
2608                 dev = vlan_dev_real_dev(dev);
2609                 goto recheck;
2610         }
2611
2612         if (!is_qlcnic_netdev(dev))
2613                 goto done;
2614
2615         adapter = netdev_priv(dev);
2616
2617         if (!adapter)
2618                 goto done;
2619
2620         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
2621                 goto done;
2622
2623         qlcnic_config_indev_addr(dev, event);
2624 done:
2625         return NOTIFY_DONE;
2626 }
2627
2628 static int
2629 qlcnic_inetaddr_event(struct notifier_block *this,
2630                 unsigned long event, void *ptr)
2631 {
2632         struct qlcnic_adapter *adapter;
2633         struct net_device *dev;
2634
2635         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2636
2637         dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
2638
2639 recheck:
2640         if (dev == NULL || !netif_running(dev))
2641                 goto done;
2642
2643         if (dev->priv_flags & IFF_802_1Q_VLAN) {
2644                 dev = vlan_dev_real_dev(dev);
2645                 goto recheck;
2646         }
2647
2648         if (!is_qlcnic_netdev(dev))
2649                 goto done;
2650
2651         adapter = netdev_priv(dev);
2652
2653         if (!adapter || !qlcnic_destip_supported(adapter))
2654                 goto done;
2655
2656         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
2657                 goto done;
2658
2659         switch (event) {
2660         case NETDEV_UP:
2661                 qlcnic_config_ipaddr(adapter, ifa->ifa_address, QLCNIC_IP_UP);
2662                 break;
2663         case NETDEV_DOWN:
2664                 qlcnic_config_ipaddr(adapter, ifa->ifa_address, QLCNIC_IP_DOWN);
2665                 break;
2666         default:
2667                 break;
2668         }
2669
2670 done:
2671         return NOTIFY_DONE;
2672 }
2673
2674 static struct notifier_block    qlcnic_netdev_cb = {
2675         .notifier_call = qlcnic_netdev_event,
2676 };
2677
2678 static struct notifier_block qlcnic_inetaddr_cb = {
2679         .notifier_call = qlcnic_inetaddr_event,
2680 };
2681 #else
2682 static void
2683 qlcnic_config_indev_addr(struct net_device *dev, unsigned long event)
2684 { }
2685 #endif
2686
2687 static struct pci_driver qlcnic_driver = {
2688         .name = qlcnic_driver_name,
2689         .id_table = qlcnic_pci_tbl,
2690         .probe = qlcnic_probe,
2691         .remove = __devexit_p(qlcnic_remove),
2692 #ifdef CONFIG_PM
2693         .suspend = qlcnic_suspend,
2694         .resume = qlcnic_resume,
2695 #endif
2696         .shutdown = qlcnic_shutdown
2697 };
2698
2699 static int __init qlcnic_init_module(void)
2700 {
2701
2702         printk(KERN_INFO "%s\n", qlcnic_driver_string);
2703
2704 #ifdef CONFIG_INET
2705         register_netdevice_notifier(&qlcnic_netdev_cb);
2706         register_inetaddr_notifier(&qlcnic_inetaddr_cb);
2707 #endif
2708
2709
2710         return pci_register_driver(&qlcnic_driver);
2711 }
2712
2713 module_init(qlcnic_init_module);
2714
2715 static void __exit qlcnic_exit_module(void)
2716 {
2717
2718         pci_unregister_driver(&qlcnic_driver);
2719
2720 #ifdef CONFIG_INET
2721         unregister_inetaddr_notifier(&qlcnic_inetaddr_cb);
2722         unregister_netdevice_notifier(&qlcnic_netdev_cb);
2723 #endif
2724 }
2725
2726 module_exit(qlcnic_exit_module);