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