drivers/net/qlcnic/qlcnic_main.c

   1 /*
   2  * Copyright (C) 2009 - QLogic Corporation.
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  18  * MA  02111-1307, USA.
  19  *
  20  * The full GNU General Public License is included in this distribution
  21  * in the file called "COPYING".
  22  *
  23  */
  24
  25 #include <linux/slab.h>
  26 #include <linux/vmalloc.h>
  27 #include <linux/interrupt.h>
  28
  29 #include "qlcnic.h"
  30
  31 #include <linux/dma-mapping.h>
  32 #include <linux/if_vlan.h>
  33 #include <net/ip.h>
  34 #include <linux/ipv6.h>
  35 #include <linux/inetdevice.h>
  36 #include <linux/sysfs.h>
  37
  38 MODULE_DESCRIPTION("QLogic 1/10 GbE Converged/Intelligent Ethernet Driver");
  39 MODULE_LICENSE("GPL");
  40 MODULE_VERSION(QLCNIC_LINUX_VERSIONID);
  41 MODULE_FIRMWARE(QLCNIC_UNIFIED_ROMIMAGE_NAME);
  42
  43 char qlcnic_driver_name[] = "qlcnic";
  44 static const char qlcnic_driver_string[] = "QLogic 1/10 GbE "
  45         "Converged/Intelligent Ethernet Driver v" QLCNIC_LINUX_VERSIONID;
  46
  47 static int port_mode = QLCNIC_PORT_MODE_AUTO_NEG;
  48
  49 /* Default to restricted 1G auto-neg mode */
  50 static int wol_port_mode = 5;
  51
  52 static int use_msi = 1;
  53 module_param(use_msi, int, 0644);
  54 MODULE_PARM_DESC(use_msi, "MSI interrupt (0=disabled, 1=enabled");
  55
  56 static int use_msi_x = 1;
  57 module_param(use_msi_x, int, 0644);
  58 MODULE_PARM_DESC(use_msi_x, "MSI-X interrupt (0=disabled, 1=enabled");
  59
  60 static int auto_fw_reset = AUTO_FW_RESET_ENABLED;
  61 module_param(auto_fw_reset, int, 0644);
  62 MODULE_PARM_DESC(auto_fw_reset, "Auto firmware reset (0=disabled, 1=enabled");
  63
  64 static int load_fw_file;
  65 module_param(load_fw_file, int, 0644);
  66 MODULE_PARM_DESC(load_fw_file, "Load firmware from (0=flash, 1=file");
  67
  68 static int qlcnic_config_npars;
  69 module_param(qlcnic_config_npars, int, 0644);
  70 MODULE_PARM_DESC(qlcnic_config_npars, "Configure NPARs (0=disabled, 1=enabled");
  71
  72 static int __devinit qlcnic_probe(struct pci_dev *pdev,
  73                 const struct pci_device_id *ent);
  74 static void __devexit qlcnic_remove(struct pci_dev *pdev);
  75 static int qlcnic_open(struct net_device *netdev);
  76 static int qlcnic_close(struct net_device *netdev);
  77 static void qlcnic_tx_timeout(struct net_device *netdev);
  78 static void qlcnic_attach_work(struct work_struct *work);
  79 static void qlcnic_fwinit_work(struct work_struct *work);
  80 static void qlcnic_fw_poll_work(struct work_struct *work);
  81 static void qlcnic_schedule_work(struct qlcnic_adapter *adapter,
  82                 work_func_t func, int delay);
  83 static void qlcnic_cancel_fw_work(struct qlcnic_adapter *adapter);
  84 static int qlcnic_poll(struct napi_struct *napi, int budget);
  85 static int qlcnic_rx_poll(struct napi_struct *napi, int budget);
  86 #ifdef CONFIG_NET_POLL_CONTROLLER
  87 static void qlcnic_poll_controller(struct net_device *netdev);
  88 #endif
  89
  90 static void qlcnic_create_sysfs_entries(struct qlcnic_adapter *adapter);
  91 static void qlcnic_remove_sysfs_entries(struct qlcnic_adapter *adapter);
  92 static void qlcnic_create_diag_entries(struct qlcnic_adapter *adapter);
  93 static void qlcnic_remove_diag_entries(struct qlcnic_adapter *adapter);
  94
  95 static void qlcnic_idc_debug_info(struct qlcnic_adapter *adapter, u8 encoding);
  96 static void qlcnic_clr_all_drv_state(struct qlcnic_adapter *adapter);
  97 static int qlcnic_can_start_firmware(struct qlcnic_adapter *adapter);
  98
  99 static irqreturn_t qlcnic_tmp_intr(int irq, void *data);
 100 static irqreturn_t qlcnic_intr(int irq, void *data);
 101 static irqreturn_t qlcnic_msi_intr(int irq, void *data);
 102 static irqreturn_t qlcnic_msix_intr(int irq, void *data);
 103
 104 static struct net_device_stats *qlcnic_get_stats(struct net_device *netdev);
 105 static void qlcnic_config_indev_addr(struct net_device *dev, unsigned long);
 106 static int qlcnic_start_firmware(struct qlcnic_adapter *);
 107
 108 static void qlcnic_dev_set_npar_ready(struct qlcnic_adapter *);
 109 static void qlcnicvf_clear_ilb_mode(struct qlcnic_adapter *);
 110 static int qlcnicvf_set_ilb_mode(struct qlcnic_adapter *);
 111 static int qlcnicvf_config_led(struct qlcnic_adapter *, u32, u32);
 112 static int qlcnicvf_config_bridged_mode(struct qlcnic_adapter *, u32);
 113 static int qlcnicvf_start_firmware(struct qlcnic_adapter *);
 114 /*  PCI Device ID Table  */
 115 #define ENTRY(device) \
 116         {PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, (device)), \
 117         .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
 118
 119 #define PCI_DEVICE_ID_QLOGIC_QLE824X  0x8020
 120
 121 static DEFINE_PCI_DEVICE_TABLE(qlcnic_pci_tbl) = {
 122         ENTRY(PCI_DEVICE_ID_QLOGIC_QLE824X),
 123         {0,}
 124 };
 125
 126 MODULE_DEVICE_TABLE(pci, qlcnic_pci_tbl);
 127
 128
 129 void
 130 qlcnic_update_cmd_producer(struct qlcnic_adapter *adapter,
 131                 struct qlcnic_host_tx_ring *tx_ring)
 132 {
 133         writel(tx_ring->producer, tx_ring->crb_cmd_producer);
 134 }
 135
 136 static const u32 msi_tgt_status[8] = {
 137         ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
 138         ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
 139         ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
 140         ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
 141 };
 142
 143 static const
 144 struct qlcnic_legacy_intr_set legacy_intr[] = QLCNIC_LEGACY_INTR_CONFIG;
 145
 146 static inline void qlcnic_disable_int(struct qlcnic_host_sds_ring *sds_ring)
 147 {
 148         writel(0, sds_ring->crb_intr_mask);
 149 }
 150
 151 static inline void qlcnic_enable_int(struct qlcnic_host_sds_ring *sds_ring)
 152 {
 153         struct qlcnic_adapter *adapter = sds_ring->adapter;
 154
 155         writel(0x1, sds_ring->crb_intr_mask);
 156
 157         if (!QLCNIC_IS_MSI_FAMILY(adapter))
 158                 writel(0xfbff, adapter->tgt_mask_reg);
 159 }
 160
 161 static int
 162 qlcnic_alloc_sds_rings(struct qlcnic_recv_context *recv_ctx, int count)
 163 {
 164         int size = sizeof(struct qlcnic_host_sds_ring) * count;
 165
 166         recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
 167
 168         return (recv_ctx->sds_rings == NULL);
 169 }
 170
 171 static void
 172 qlcnic_free_sds_rings(struct qlcnic_recv_context *recv_ctx)
 173 {
 174         if (recv_ctx->sds_rings != NULL)
 175                 kfree(recv_ctx->sds_rings);
 176
 177         recv_ctx->sds_rings = NULL;
 178 }
 179
 180 static int
 181 qlcnic_napi_add(struct qlcnic_adapter *adapter, struct net_device *netdev)
 182 {
 183         int ring;
 184         struct qlcnic_host_sds_ring *sds_ring;
 185         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 186
 187         if (qlcnic_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
 188                 return -ENOMEM;
 189
 190         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 191                 sds_ring = &recv_ctx->sds_rings[ring];
 192
 193                 if (ring == adapter->max_sds_rings - 1)
 194                         netif_napi_add(netdev, &sds_ring->napi, qlcnic_poll,
 195                                 QLCNIC_NETDEV_WEIGHT/adapter->max_sds_rings);
 196                 else
 197                         netif_napi_add(netdev, &sds_ring->napi,
 198                                 qlcnic_rx_poll, QLCNIC_NETDEV_WEIGHT*2);
 199         }
 200
 201         return 0;
 202 }
 203
 204 static void
 205 qlcnic_napi_del(struct qlcnic_adapter *adapter)
 206 {
 207         int ring;
 208         struct qlcnic_host_sds_ring *sds_ring;
 209         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 210
 211         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 212                 sds_ring = &recv_ctx->sds_rings[ring];
 213                 netif_napi_del(&sds_ring->napi);
 214         }
 215
 216         qlcnic_free_sds_rings(&adapter->recv_ctx);
 217 }
 218
 219 static void
 220 qlcnic_napi_enable(struct qlcnic_adapter *adapter)
 221 {
 222         int ring;
 223         struct qlcnic_host_sds_ring *sds_ring;
 224         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 225
 226         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
 227                 return;
 228
 229         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 230                 sds_ring = &recv_ctx->sds_rings[ring];
 231                 napi_enable(&sds_ring->napi);
 232                 qlcnic_enable_int(sds_ring);
 233         }
 234 }
 235
 236 static void
 237 qlcnic_napi_disable(struct qlcnic_adapter *adapter)
 238 {
 239         int ring;
 240         struct qlcnic_host_sds_ring *sds_ring;
 241         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 242
 243         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
 244                 return;
 245
 246         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 247                 sds_ring = &recv_ctx->sds_rings[ring];
 248                 qlcnic_disable_int(sds_ring);
 249                 napi_synchronize(&sds_ring->napi);
 250                 napi_disable(&sds_ring->napi);
 251         }
 252 }
 253
 254 static void qlcnic_clear_stats(struct qlcnic_adapter *adapter)
 255 {
 256         memset(&adapter->stats, 0, sizeof(adapter->stats));
 257 }
 258
 259 static void qlcnic_set_port_mode(struct qlcnic_adapter *adapter)
 260 {
 261         u32 val, data;
 262
 263         val = adapter->ahw.board_type;
 264         if ((val == QLCNIC_BRDTYPE_P3_HMEZ) ||
 265                 (val == QLCNIC_BRDTYPE_P3_XG_LOM)) {
 266                 if (port_mode == QLCNIC_PORT_MODE_802_3_AP) {
 267                         data = QLCNIC_PORT_MODE_802_3_AP;
 268                         QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
 269                 } else if (port_mode == QLCNIC_PORT_MODE_XG) {
 270                         data = QLCNIC_PORT_MODE_XG;
 271                         QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
 272                 } else if (port_mode == QLCNIC_PORT_MODE_AUTO_NEG_1G) {
 273                         data = QLCNIC_PORT_MODE_AUTO_NEG_1G;
 274                         QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
 275                 } else if (port_mode == QLCNIC_PORT_MODE_AUTO_NEG_XG) {
 276                         data = QLCNIC_PORT_MODE_AUTO_NEG_XG;
 277                         QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
 278                 } else {
 279                         data = QLCNIC_PORT_MODE_AUTO_NEG;
 280                         QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
 281                 }
 282
 283                 if ((wol_port_mode != QLCNIC_PORT_MODE_802_3_AP) &&
 284                         (wol_port_mode != QLCNIC_PORT_MODE_XG) &&
 285                         (wol_port_mode != QLCNIC_PORT_MODE_AUTO_NEG_1G) &&
 286                         (wol_port_mode != QLCNIC_PORT_MODE_AUTO_NEG_XG)) {
 287                         wol_port_mode = QLCNIC_PORT_MODE_AUTO_NEG;
 288                 }
 289                 QLCWR32(adapter, QLCNIC_WOL_PORT_MODE, wol_port_mode);
 290         }
 291 }
 292
 293 static void qlcnic_set_msix_bit(struct pci_dev *pdev, int enable)
 294 {
 295         u32 control;
 296         int pos;
 297
 298         pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
 299         if (pos) {
 300                 pci_read_config_dword(pdev, pos, &control);
 301                 if (enable)
 302                         control |= PCI_MSIX_FLAGS_ENABLE;
 303                 else
 304                         control = 0;
 305                 pci_write_config_dword(pdev, pos, control);
 306         }
 307 }
 308
 309 static void qlcnic_init_msix_entries(struct qlcnic_adapter *adapter, int count)
 310 {
 311         int i;
 312
 313         for (i = 0; i < count; i++)
 314                 adapter->msix_entries[i].entry = i;
 315 }
 316
 317 static int
 318 qlcnic_read_mac_addr(struct qlcnic_adapter *adapter)
 319 {
 320         u8 mac_addr[ETH_ALEN];
 321         struct net_device *netdev = adapter->netdev;
 322         struct pci_dev *pdev = adapter->pdev;
 323
 324         if (adapter->nic_ops->get_mac_addr(adapter, mac_addr) != 0)
 325                 return -EIO;
 326
 327         memcpy(netdev->dev_addr, mac_addr, ETH_ALEN);
 328         memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
 329         memcpy(adapter->mac_addr, netdev->dev_addr, netdev->addr_len);
 330
 331         /* set station address */
 332
 333         if (!is_valid_ether_addr(netdev->perm_addr))
 334                 dev_warn(&pdev->dev, "Bad MAC address %pM.\n",
 335                                         netdev->dev_addr);
 336
 337         return 0;
 338 }
 339
 340 static int qlcnic_set_mac(struct net_device *netdev, void *p)
 341 {
 342         struct qlcnic_adapter *adapter = netdev_priv(netdev);
 343         struct sockaddr *addr = p;
 344
 345         if (!is_valid_ether_addr(addr->sa_data))
 346                 return -EINVAL;
 347
 348         if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
 349                 netif_device_detach(netdev);
 350                 qlcnic_napi_disable(adapter);
 351         }
 352
 353         memcpy(adapter->mac_addr, addr->sa_data, netdev->addr_len);
 354         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
 355         qlcnic_set_multi(adapter->netdev);
 356
 357         if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
 358                 netif_device_attach(netdev);
 359                 qlcnic_napi_enable(adapter);
 360         }
 361         return 0;
 362 }
 363
 364 static const struct net_device_ops qlcnic_netdev_ops = {
 365         .ndo_open          = qlcnic_open,
 366         .ndo_stop          = qlcnic_close,
 367         .ndo_start_xmit    = qlcnic_xmit_frame,
 368         .ndo_get_stats     = qlcnic_get_stats,
 369         .ndo_validate_addr = eth_validate_addr,
 370         .ndo_set_multicast_list = qlcnic_set_multi,
 371         .ndo_set_mac_address    = qlcnic_set_mac,
 372         .ndo_change_mtu    = qlcnic_change_mtu,
 373         .ndo_tx_timeout    = qlcnic_tx_timeout,
 374 #ifdef CONFIG_NET_POLL_CONTROLLER
 375         .ndo_poll_controller = qlcnic_poll_controller,
 376 #endif
 377 };
 378
 379 static struct qlcnic_nic_template qlcnic_ops = {
 380         .get_mac_addr = qlcnic_get_mac_address,
 381         .config_bridged_mode = qlcnic_config_bridged_mode,
 382         .config_led = qlcnic_config_led,
 383         .set_ilb_mode = qlcnic_set_ilb_mode,
 384         .clear_ilb_mode = qlcnic_clear_ilb_mode,
 385         .start_firmware = qlcnic_start_firmware
 386 };
 387
 388 static struct qlcnic_nic_template qlcnic_vf_ops = {
 389         .get_mac_addr = qlcnic_get_mac_address,
 390         .config_bridged_mode = qlcnicvf_config_bridged_mode,
 391         .config_led = qlcnicvf_config_led,
 392         .set_ilb_mode = qlcnicvf_set_ilb_mode,
 393         .clear_ilb_mode = qlcnicvf_clear_ilb_mode,
 394         .start_firmware = qlcnicvf_start_firmware
 395 };
 396
 397 static void
 398 qlcnic_setup_intr(struct qlcnic_adapter *adapter)
 399 {
 400         const struct qlcnic_legacy_intr_set *legacy_intrp;
 401         struct pci_dev *pdev = adapter->pdev;
 402         int err, num_msix;
 403
 404         if (adapter->rss_supported) {
 405                 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
 406                         MSIX_ENTRIES_PER_ADAPTER : 2;
 407         } else
 408                 num_msix = 1;
 409
 410         adapter->max_sds_rings = 1;
 411
 412         adapter->flags &= ~(QLCNIC_MSI_ENABLED | QLCNIC_MSIX_ENABLED);
 413
 414         legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
 415
 416         adapter->int_vec_bit = legacy_intrp->int_vec_bit;
 417         adapter->tgt_status_reg = qlcnic_get_ioaddr(adapter,
 418                         legacy_intrp->tgt_status_reg);
 419         adapter->tgt_mask_reg = qlcnic_get_ioaddr(adapter,
 420                         legacy_intrp->tgt_mask_reg);
 421         adapter->isr_int_vec = qlcnic_get_ioaddr(adapter, ISR_INT_VECTOR);
 422
 423         adapter->crb_int_state_reg = qlcnic_get_ioaddr(adapter,
 424                         ISR_INT_STATE_REG);
 425
 426         qlcnic_set_msix_bit(pdev, 0);
 427
 428         if (adapter->msix_supported) {
 429
 430                 qlcnic_init_msix_entries(adapter, num_msix);
 431                 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
 432                 if (err == 0) {
 433                         adapter->flags |= QLCNIC_MSIX_ENABLED;
 434                         qlcnic_set_msix_bit(pdev, 1);
 435
 436                         if (adapter->rss_supported)
 437                                 adapter->max_sds_rings = num_msix;
 438
 439                         dev_info(&pdev->dev, "using msi-x interrupts\n");
 440                         return;
 441                 }
 442
 443                 if (err > 0)
 444                         pci_disable_msix(pdev);
 445
 446                 /* fall through for msi */
 447         }
 448
 449         if (use_msi && !pci_enable_msi(pdev)) {
 450                 adapter->flags |= QLCNIC_MSI_ENABLED;
 451                 adapter->tgt_status_reg = qlcnic_get_ioaddr(adapter,
 452                                 msi_tgt_status[adapter->ahw.pci_func]);
 453                 dev_info(&pdev->dev, "using msi interrupts\n");
 454                 adapter->msix_entries[0].vector = pdev->irq;
 455                 return;
 456         }
 457
 458         dev_info(&pdev->dev, "using legacy interrupts\n");
 459         adapter->msix_entries[0].vector = pdev->irq;
 460 }
 461
 462 static void
 463 qlcnic_teardown_intr(struct qlcnic_adapter *adapter)
 464 {
 465         if (adapter->flags & QLCNIC_MSIX_ENABLED)
 466                 pci_disable_msix(adapter->pdev);
 467         if (adapter->flags & QLCNIC_MSI_ENABLED)
 468                 pci_disable_msi(adapter->pdev);
 469 }
 470
 471 static void
 472 qlcnic_cleanup_pci_map(struct qlcnic_adapter *adapter)
 473 {
 474         if (adapter->ahw.pci_base0 != NULL)
 475                 iounmap(adapter->ahw.pci_base0);
 476 }
 477
 478 static int
 479 qlcnic_set_function_modes(struct qlcnic_adapter *adapter)
 480 {
 481         u8 id;
 482         u32 ref_count;
 483         int i, ret = 1;
 484         u32 data = QLCNIC_MGMT_FUNC;
 485         void __iomem *priv_op = adapter->ahw.pci_base0 + QLCNIC_DRV_OP_MODE;
 486
 487         /* If other drivers are not in use set their privilege level */
 488         ref_count = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
 489         ret = qlcnic_api_lock(adapter);
 490         if (ret)
 491                 goto err_lock;
 492         if (QLC_DEV_CLR_REF_CNT(ref_count, adapter->ahw.pci_func))
 493                 goto err_npar;
 494
 495         if (qlcnic_config_npars) {
 496                 for (i = 0; i < QLCNIC_MAX_PCI_FUNC; i++) {
 497                         id = adapter->npars[i].id;
 498                         if (adapter->npars[i].type != QLCNIC_TYPE_NIC ||
 499                                 id == adapter->ahw.pci_func)
 500                                 continue;
 501                         data |= (qlcnic_config_npars &
 502                                         QLC_DEV_SET_DRV(0xf, id));
 503                 }
 504         } else {
 505                 data = readl(priv_op);
 506                 data = (data & ~QLC_DEV_SET_DRV(0xf, adapter->ahw.pci_func)) |
 507                         (QLC_DEV_SET_DRV(QLCNIC_MGMT_FUNC,
 508                         adapter->ahw.pci_func));
 509         }
 510         writel(data, priv_op);
 511 err_npar:
 512         qlcnic_api_unlock(adapter);
 513 err_lock:
 514         return ret;
 515 }
 516
 517 static u32
 518 qlcnic_get_driver_mode(struct qlcnic_adapter *adapter)
 519 {
 520         void __iomem *msix_base_addr;
 521         void __iomem *priv_op;
 522         u32 func;
 523         u32 msix_base;
 524         u32 op_mode, priv_level;
 525
 526         /* Determine FW API version */
 527         adapter->fw_hal_version = readl(adapter->ahw.pci_base0 + QLCNIC_FW_API);
 528
 529         /* Find PCI function number */
 530         pci_read_config_dword(adapter->pdev, QLCNIC_MSIX_TABLE_OFFSET, &func);
 531         msix_base_addr = adapter->ahw.pci_base0 + QLCNIC_MSIX_BASE;
 532         msix_base = readl(msix_base_addr);
 533         func = (func - msix_base)/QLCNIC_MSIX_TBL_PGSIZE;
 534         adapter->ahw.pci_func = func;
 535
 536         qlcnic_get_nic_info(adapter, adapter->ahw.pci_func);
 537
 538         if (!(adapter->flags & QLCNIC_ESWITCH_ENABLED)) {
 539                 adapter->nic_ops = &qlcnic_ops;
 540                 return adapter->fw_hal_version;
 541         }
 542
 543         /* Determine function privilege level */
 544         priv_op = adapter->ahw.pci_base0 + QLCNIC_DRV_OP_MODE;
 545         op_mode = readl(priv_op);
 546         if (op_mode == QLC_DEV_DRV_DEFAULT)
 547                 priv_level = QLCNIC_MGMT_FUNC;
 548         else
 549                 priv_level = QLC_DEV_GET_DRV(op_mode, adapter->ahw.pci_func);
 550
 551         switch (priv_level) {
 552         case QLCNIC_MGMT_FUNC:
 553                 adapter->op_mode = QLCNIC_MGMT_FUNC;
 554                 adapter->nic_ops = &qlcnic_ops;
 555                 qlcnic_get_pci_info(adapter);
 556                 /* Set privilege level for other functions */
 557                 qlcnic_set_function_modes(adapter);
 558                 dev_info(&adapter->pdev->dev,
 559                         "HAL Version: %d, Management function\n",
 560                         adapter->fw_hal_version);
 561                 break;
 562         case QLCNIC_PRIV_FUNC:
 563                 adapter->op_mode = QLCNIC_PRIV_FUNC;
 564                 dev_info(&adapter->pdev->dev,
 565                         "HAL Version: %d, Privileged function\n",
 566                         adapter->fw_hal_version);
 567                 adapter->nic_ops = &qlcnic_ops;
 568                 break;
 569         case QLCNIC_NON_PRIV_FUNC:
 570                 adapter->op_mode = QLCNIC_NON_PRIV_FUNC;
 571                 dev_info(&adapter->pdev->dev,
 572                         "HAL Version: %d Non Privileged function\n",
 573                         adapter->fw_hal_version);
 574                 adapter->nic_ops = &qlcnic_vf_ops;
 575                 break;
 576         default:
 577                 dev_info(&adapter->pdev->dev, "Unknown function mode: %d\n",
 578                         priv_level);
 579                 return 0;
 580         }
 581         return adapter->fw_hal_version;
 582 }
 583
 584 static int
 585 qlcnic_setup_pci_map(struct qlcnic_adapter *adapter)
 586 {
 587         void __iomem *mem_ptr0 = NULL;
 588         resource_size_t mem_base;
 589         unsigned long mem_len, pci_len0 = 0;
 590
 591         struct pci_dev *pdev = adapter->pdev;
 592
 593         /* remap phys address */
 594         mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
 595         mem_len = pci_resource_len(pdev, 0);
 596
 597         if (mem_len == QLCNIC_PCI_2MB_SIZE) {
 598
 599                 mem_ptr0 = pci_ioremap_bar(pdev, 0);
 600                 if (mem_ptr0 == NULL) {
 601                         dev_err(&pdev->dev, "failed to map PCI bar 0\n");
 602                         return -EIO;
 603                 }
 604                 pci_len0 = mem_len;
 605         } else {
 606                 return -EIO;
 607         }
 608
 609         dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
 610
 611         adapter->ahw.pci_base0 = mem_ptr0;
 612         adapter->ahw.pci_len0 = pci_len0;
 613
 614         if (!qlcnic_get_driver_mode(adapter)) {
 615                 iounmap(adapter->ahw.pci_base0);
 616                 return -EIO;
 617         }
 618
 619         adapter->ahw.ocm_win_crb = qlcnic_get_ioaddr(adapter,
 620                 QLCNIC_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(adapter->ahw.pci_func)));
 621
 622         return 0;
 623 }
 624
 625 static void get_brd_name(struct qlcnic_adapter *adapter, char *name)
 626 {
 627         struct pci_dev *pdev = adapter->pdev;
 628         int i, found = 0;
 629
 630         for (i = 0; i < NUM_SUPPORTED_BOARDS; ++i) {
 631                 if (qlcnic_boards[i].vendor == pdev->vendor &&
 632                         qlcnic_boards[i].device == pdev->device &&
 633                         qlcnic_boards[i].sub_vendor == pdev->subsystem_vendor &&
 634                         qlcnic_boards[i].sub_device == pdev->subsystem_device) {
 635                                 sprintf(name, "%pM: %s" ,
 636                                         adapter->mac_addr,
 637                                         qlcnic_boards[i].short_name);
 638                                 found = 1;
 639                                 break;
 640                 }
 641
 642         }
 643
 644         if (!found)
 645                 sprintf(name, "%pM Gigabit Ethernet", adapter->mac_addr);
 646 }
 647
 648 static void
 649 qlcnic_check_options(struct qlcnic_adapter *adapter)
 650 {
 651         u32 fw_major, fw_minor, fw_build;
 652         char brd_name[QLCNIC_MAX_BOARD_NAME_LEN];
 653         char serial_num[32];
 654         int i, offset, val;
 655         int *ptr32;
 656         struct pci_dev *pdev = adapter->pdev;
 657
 658         adapter->driver_mismatch = 0;
 659
 660         ptr32 = (int *)&serial_num;
 661         offset = QLCNIC_FW_SERIAL_NUM_OFFSET;
 662         for (i = 0; i < 8; i++) {
 663                 if (qlcnic_rom_fast_read(adapter, offset, &val) == -1) {
 664                         dev_err(&pdev->dev, "error reading board info\n");
 665                         adapter->driver_mismatch = 1;
 666                         return;
 667                 }
 668                 ptr32[i] = cpu_to_le32(val);
 669                 offset += sizeof(u32);
 670         }
 671
 672         fw_major = QLCRD32(adapter, QLCNIC_FW_VERSION_MAJOR);
 673         fw_minor = QLCRD32(adapter, QLCNIC_FW_VERSION_MINOR);
 674         fw_build = QLCRD32(adapter, QLCNIC_FW_VERSION_SUB);
 675
 676         adapter->fw_version = QLCNIC_VERSION_CODE(fw_major, fw_minor, fw_build);
 677
 678         if (adapter->portnum == 0) {
 679                 get_brd_name(adapter, brd_name);
 680
 681                 pr_info("%s: %s Board Chip rev 0x%x\n",
 682                                 module_name(THIS_MODULE),
 683                                 brd_name, adapter->ahw.revision_id);
 684         }
 685
 686         dev_info(&pdev->dev, "firmware v%d.%d.%d\n",
 687                         fw_major, fw_minor, fw_build);
 688
 689         adapter->flags &= ~QLCNIC_LRO_ENABLED;
 690
 691         if (adapter->ahw.port_type == QLCNIC_XGBE) {
 692                 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
 693                 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
 694         } else if (adapter->ahw.port_type == QLCNIC_GBE) {
 695                 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
 696                 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
 697         }
 698
 699         qlcnic_get_nic_info(adapter, adapter->ahw.pci_func);
 700
 701         adapter->msix_supported = !!use_msi_x;
 702         adapter->rss_supported = !!use_msi_x;
 703
 704         adapter->num_txd = MAX_CMD_DESCRIPTORS;
 705
 706         adapter->max_rds_rings = 2;
 707 }
 708
 709 static int
 710 qlcnic_start_firmware(struct qlcnic_adapter *adapter)
 711 {
 712         int val, err, first_boot;
 713
 714         err = qlcnic_can_start_firmware(adapter);
 715         if (err < 0)
 716                 return err;
 717         else if (!err)
 718                 goto wait_init;
 719
 720         first_boot = QLCRD32(adapter, QLCNIC_CAM_RAM(0x1fc));
 721         if (first_boot == 0x55555555)
 722                 /* This is the first boot after power up */
 723                 QLCWR32(adapter, QLCNIC_CAM_RAM(0x1fc), QLCNIC_BDINFO_MAGIC);
 724
 725         if (load_fw_file)
 726                 qlcnic_request_firmware(adapter);
 727         else {
 728                 if (qlcnic_check_flash_fw_ver(adapter))
 729                         goto err_out;
 730
 731                 adapter->fw_type = QLCNIC_FLASH_ROMIMAGE;
 732         }
 733
 734         err = qlcnic_need_fw_reset(adapter);
 735         if (err < 0)
 736                 goto err_out;
 737         if (err == 0)
 738                 goto wait_init;
 739
 740         if (first_boot != 0x55555555) {
 741                 QLCWR32(adapter, CRB_CMDPEG_STATE, 0);
 742                 QLCWR32(adapter, CRB_RCVPEG_STATE, 0);
 743                 qlcnic_pinit_from_rom(adapter);
 744                 msleep(1);
 745         }
 746
 747         QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS1, 0);
 748         QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS2, 0);
 749
 750         qlcnic_set_port_mode(adapter);
 751
 752         err = qlcnic_load_firmware(adapter);
 753         if (err)
 754                 goto err_out;
 755
 756         qlcnic_release_firmware(adapter);
 757
 758         val = (_QLCNIC_LINUX_MAJOR << 16)
 759                 | ((_QLCNIC_LINUX_MINOR << 8))
 760                 | (_QLCNIC_LINUX_SUBVERSION);
 761         QLCWR32(adapter, CRB_DRIVER_VERSION, val);
 762
 763 wait_init:
 764         /* Handshake with the card before we register the devices. */
 765         err = qlcnic_init_firmware(adapter);
 766         if (err)
 767                 goto err_out;
 768
 769         QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_READY);
 770         qlcnic_idc_debug_info(adapter, 1);
 771
 772         qlcnic_check_options(adapter);
 773
 774         if (adapter->flags & QLCNIC_ESWITCH_ENABLED &&
 775                 adapter->op_mode != QLCNIC_NON_PRIV_FUNC)
 776                 qlcnic_dev_set_npar_ready(adapter);
 777
 778         adapter->need_fw_reset = 0;
 779
 780         qlcnic_release_firmware(adapter);
 781         return 0;
 782
 783 err_out:
 784         QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_FAILED);
 785         dev_err(&adapter->pdev->dev, "Device state set to failed\n");
 786         qlcnic_release_firmware(adapter);
 787         return err;
 788 }
 789
 790 static int
 791 qlcnic_request_irq(struct qlcnic_adapter *adapter)
 792 {
 793         irq_handler_t handler;
 794         struct qlcnic_host_sds_ring *sds_ring;
 795         int err, ring;
 796
 797         unsigned long flags = 0;
 798         struct net_device *netdev = adapter->netdev;
 799         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 800
 801         if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
 802                 handler = qlcnic_tmp_intr;
 803                 if (!QLCNIC_IS_MSI_FAMILY(adapter))
 804                         flags |= IRQF_SHARED;
 805
 806         } else {
 807                 if (adapter->flags & QLCNIC_MSIX_ENABLED)
 808                         handler = qlcnic_msix_intr;
 809                 else if (adapter->flags & QLCNIC_MSI_ENABLED)
 810                         handler = qlcnic_msi_intr;
 811                 else {
 812                         flags |= IRQF_SHARED;
 813                         handler = qlcnic_intr;
 814                 }
 815         }
 816         adapter->irq = netdev->irq;
 817
 818         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 819                 sds_ring = &recv_ctx->sds_rings[ring];
 820                 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
 821                 err = request_irq(sds_ring->irq, handler,
 822                                   flags, sds_ring->name, sds_ring);
 823                 if (err)
 824                         return err;
 825         }
 826
 827         return 0;
 828 }
 829
 830 static void
 831 qlcnic_free_irq(struct qlcnic_adapter *adapter)
 832 {
 833         int ring;
 834         struct qlcnic_host_sds_ring *sds_ring;
 835
 836         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 837
 838         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 839                 sds_ring = &recv_ctx->sds_rings[ring];
 840                 free_irq(sds_ring->irq, sds_ring);
 841         }
 842 }
 843
 844 static void
 845 qlcnic_init_coalesce_defaults(struct qlcnic_adapter *adapter)
 846 {
 847         adapter->coal.flags = QLCNIC_INTR_DEFAULT;
 848         adapter->coal.normal.data.rx_time_us =
 849                 QLCNIC_DEFAULT_INTR_COALESCE_RX_TIME_US;
 850         adapter->coal.normal.data.rx_packets =
 851                 QLCNIC_DEFAULT_INTR_COALESCE_RX_PACKETS;
 852         adapter->coal.normal.data.tx_time_us =
 853                 QLCNIC_DEFAULT_INTR_COALESCE_TX_TIME_US;
 854         adapter->coal.normal.data.tx_packets =
 855                 QLCNIC_DEFAULT_INTR_COALESCE_TX_PACKETS;
 856 }
 857
 858 static int
 859 __qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
 860 {
 861         int ring;
 862         struct qlcnic_host_rds_ring *rds_ring;
 863
 864         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
 865                 return -EIO;
 866
 867         if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
 868                 return 0;
 869
 870         if (qlcnic_fw_create_ctx(adapter))
 871                 return -EIO;
 872
 873         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 874                 rds_ring = &adapter->recv_ctx.rds_rings[ring];
 875                 qlcnic_post_rx_buffers(adapter, ring, rds_ring);
 876         }
 877
 878         qlcnic_set_multi(netdev);
 879         qlcnic_fw_cmd_set_mtu(adapter, netdev->mtu);
 880
 881         adapter->ahw.linkup = 0;
 882
 883         if (adapter->max_sds_rings > 1)
 884                 qlcnic_config_rss(adapter, 1);
 885
 886         qlcnic_config_intr_coalesce(adapter);
 887
 888         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
 889                 qlcnic_config_hw_lro(adapter, QLCNIC_LRO_ENABLED);
 890
 891         qlcnic_napi_enable(adapter);
 892
 893         qlcnic_linkevent_request(adapter, 1);
 894
 895         adapter->reset_context = 0;
 896         set_bit(__QLCNIC_DEV_UP, &adapter->state);
 897         return 0;
 898 }
 899
 900 /* Usage: During resume and firmware recovery module.*/
 901
 902 static int
 903 qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
 904 {
 905         int err = 0;
 906
 907         rtnl_lock();
 908         if (netif_running(netdev))
 909                 err = __qlcnic_up(adapter, netdev);
 910         rtnl_unlock();
 911
 912         return err;
 913 }
 914
 915 static void
 916 __qlcnic_down(struct qlcnic_adapter *adapter, struct net_device *netdev)
 917 {
 918         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
 919                 return;
 920
 921         if (!test_and_clear_bit(__QLCNIC_DEV_UP, &adapter->state))
 922                 return;
 923
 924         smp_mb();
 925         spin_lock(&adapter->tx_clean_lock);
 926         netif_carrier_off(netdev);
 927         netif_tx_disable(netdev);
 928
 929         qlcnic_free_mac_list(adapter);
 930
 931         qlcnic_nic_set_promisc(adapter, QLCNIC_NIU_NON_PROMISC_MODE);
 932
 933         qlcnic_napi_disable(adapter);
 934
 935         qlcnic_fw_destroy_ctx(adapter);
 936
 937         qlcnic_reset_rx_buffers_list(adapter);
 938         qlcnic_release_tx_buffers(adapter);
 939         spin_unlock(&adapter->tx_clean_lock);
 940 }
 941
 942 /* Usage: During suspend and firmware recovery module */
 943
 944 static void
 945 qlcnic_down(struct qlcnic_adapter *adapter, struct net_device *netdev)
 946 {
 947         rtnl_lock();
 948         if (netif_running(netdev))
 949                 __qlcnic_down(adapter, netdev);
 950         rtnl_unlock();
 951
 952 }
 953
 954 static int
 955 qlcnic_attach(struct qlcnic_adapter *adapter)
 956 {
 957         struct net_device *netdev = adapter->netdev;
 958         struct pci_dev *pdev = adapter->pdev;
 959         int err;
 960
 961         if (adapter->is_up == QLCNIC_ADAPTER_UP_MAGIC)
 962                 return 0;
 963
 964         err = qlcnic_napi_add(adapter, netdev);
 965         if (err)
 966                 return err;
 967
 968         err = qlcnic_alloc_sw_resources(adapter);
 969         if (err) {
 970                 dev_err(&pdev->dev, "Error in setting sw resources\n");
 971                 goto err_out_napi_del;
 972         }
 973
 974         err = qlcnic_alloc_hw_resources(adapter);
 975         if (err) {
 976                 dev_err(&pdev->dev, "Error in setting hw resources\n");
 977                 goto err_out_free_sw;
 978         }
 979
 980         err = qlcnic_request_irq(adapter);
 981         if (err) {
 982                 dev_err(&pdev->dev, "failed to setup interrupt\n");
 983                 goto err_out_free_hw;
 984         }
 985
 986         qlcnic_init_coalesce_defaults(adapter);
 987
 988         qlcnic_create_sysfs_entries(adapter);
 989
 990         adapter->is_up = QLCNIC_ADAPTER_UP_MAGIC;
 991         return 0;
 992
 993 err_out_free_hw:
 994         qlcnic_free_hw_resources(adapter);
 995 err_out_free_sw:
 996         qlcnic_free_sw_resources(adapter);
 997 err_out_napi_del:
 998         qlcnic_napi_del(adapter);
 999         return err;
1000 }
1001
1002 static void
1003 qlcnic_detach(struct qlcnic_adapter *adapter)
1004 {
1005         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
1006                 return;
1007
1008         qlcnic_remove_sysfs_entries(adapter);
1009
1010         qlcnic_free_hw_resources(adapter);
1011         qlcnic_release_rx_buffers(adapter);
1012         qlcnic_free_irq(adapter);
1013         qlcnic_napi_del(adapter);
1014         qlcnic_free_sw_resources(adapter);
1015
1016         adapter->is_up = 0;
1017 }
1018
1019 void qlcnic_diag_free_res(struct net_device *netdev, int max_sds_rings)
1020 {
1021         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1022         struct qlcnic_host_sds_ring *sds_ring;
1023         int ring;
1024
1025         clear_bit(__QLCNIC_DEV_UP, &adapter->state);
1026         if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
1027                 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1028                         sds_ring = &adapter->recv_ctx.sds_rings[ring];
1029                         qlcnic_disable_int(sds_ring);
1030                 }
1031         }
1032
1033         qlcnic_fw_destroy_ctx(adapter);
1034
1035         qlcnic_detach(adapter);
1036
1037         adapter->diag_test = 0;
1038         adapter->max_sds_rings = max_sds_rings;
1039
1040         if (qlcnic_attach(adapter))
1041                 goto out;
1042
1043         if (netif_running(netdev))
1044                 __qlcnic_up(adapter, netdev);
1045 out:
1046         netif_device_attach(netdev);
1047 }
1048
1049 int qlcnic_diag_alloc_res(struct net_device *netdev, int test)
1050 {
1051         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1052         struct qlcnic_host_sds_ring *sds_ring;
1053         struct qlcnic_host_rds_ring *rds_ring;
1054         int ring;
1055         int ret;
1056
1057         netif_device_detach(netdev);
1058
1059         if (netif_running(netdev))
1060                 __qlcnic_down(adapter, netdev);
1061
1062         qlcnic_detach(adapter);
1063
1064         adapter->max_sds_rings = 1;
1065         adapter->diag_test = test;
1066
1067         ret = qlcnic_attach(adapter);
1068         if (ret) {
1069                 netif_device_attach(netdev);
1070                 return ret;
1071         }
1072
1073         ret = qlcnic_fw_create_ctx(adapter);
1074         if (ret) {
1075                 qlcnic_detach(adapter);
1076                 return ret;
1077         }
1078
1079         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1080                 rds_ring = &adapter->recv_ctx.rds_rings[ring];
1081                 qlcnic_post_rx_buffers(adapter, ring, rds_ring);
1082         }
1083
1084         if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
1085                 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1086                         sds_ring = &adapter->recv_ctx.sds_rings[ring];
1087                         qlcnic_enable_int(sds_ring);
1088                 }
1089         }
1090         set_bit(__QLCNIC_DEV_UP, &adapter->state);
1091
1092         return 0;
1093 }
1094
1095 /* Reset context in hardware only */
1096 static int
1097 qlcnic_reset_hw_context(struct qlcnic_adapter *adapter)
1098 {
1099         struct net_device *netdev = adapter->netdev;
1100
1101         if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
1102                 return -EBUSY;
1103
1104         netif_device_detach(netdev);
1105
1106         qlcnic_down(adapter, netdev);
1107
1108         qlcnic_up(adapter, netdev);
1109
1110         netif_device_attach(netdev);
1111
1112         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1113         return 0;
1114 }
1115
1116 int
1117 qlcnic_reset_context(struct qlcnic_adapter *adapter)
1118 {
1119         int err = 0;
1120         struct net_device *netdev = adapter->netdev;
1121
1122         if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
1123                 return -EBUSY;
1124
1125         if (adapter->is_up == QLCNIC_ADAPTER_UP_MAGIC) {
1126
1127                 netif_device_detach(netdev);
1128
1129                 if (netif_running(netdev))
1130                         __qlcnic_down(adapter, netdev);
1131
1132                 qlcnic_detach(adapter);
1133
1134                 if (netif_running(netdev)) {
1135                         err = qlcnic_attach(adapter);
1136                         if (!err)
1137                                 __qlcnic_up(adapter, netdev);
1138                 }
1139
1140                 netif_device_attach(netdev);
1141         }
1142
1143         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1144         return err;
1145 }
1146
1147 static int
1148 qlcnic_setup_netdev(struct qlcnic_adapter *adapter,
1149                 struct net_device *netdev, u8 pci_using_dac)
1150 {
1151         int err;
1152         struct pci_dev *pdev = adapter->pdev;
1153
1154         adapter->rx_csum = 1;
1155         adapter->mc_enabled = 0;
1156         adapter->max_mc_count = 38;
1157
1158         netdev->netdev_ops         = &qlcnic_netdev_ops;
1159         netdev->watchdog_timeo     = 5*HZ;
1160
1161         qlcnic_change_mtu(netdev, netdev->mtu);
1162
1163         SET_ETHTOOL_OPS(netdev, &qlcnic_ethtool_ops);
1164
1165         netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM |
1166                 NETIF_F_IPV6_CSUM | NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6);
1167
1168         netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM |
1169                 NETIF_F_IPV6_CSUM | NETIF_F_TSO | NETIF_F_TSO6);
1170
1171         if (pci_using_dac) {
1172                 netdev->features |= NETIF_F_HIGHDMA;
1173                 netdev->vlan_features |= NETIF_F_HIGHDMA;
1174         }
1175
1176         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_FVLANTX)
1177                 netdev->features |= (NETIF_F_HW_VLAN_TX);
1178
1179         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
1180                 netdev->features |= NETIF_F_LRO;
1181
1182         netdev->irq = adapter->msix_entries[0].vector;
1183
1184         if (qlcnic_read_mac_addr(adapter))
1185                 dev_warn(&pdev->dev, "failed to read mac addr\n");
1186
1187         netif_carrier_off(netdev);
1188         netif_stop_queue(netdev);
1189
1190         err = register_netdev(netdev);
1191         if (err) {
1192                 dev_err(&pdev->dev, "failed to register net device\n");
1193                 return err;
1194         }
1195
1196         return 0;
1197 }
1198
1199 static int qlcnic_set_dma_mask(struct pci_dev *pdev, u8 *pci_using_dac)
1200 {
1201         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) &&
1202                         !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
1203                 *pci_using_dac = 1;
1204         else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) &&
1205                         !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
1206                 *pci_using_dac = 0;
1207         else {
1208                 dev_err(&pdev->dev, "Unable to set DMA mask, aborting\n");
1209                 return -EIO;
1210         }
1211
1212         return 0;
1213 }
1214
1215 static int __devinit
1216 qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1217 {
1218         struct net_device *netdev = NULL;
1219         struct qlcnic_adapter *adapter = NULL;
1220         int err;
1221         uint8_t revision_id;
1222         uint8_t pci_using_dac;
1223
1224         err = pci_enable_device(pdev);
1225         if (err)
1226                 return err;
1227
1228         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1229                 err = -ENODEV;
1230                 goto err_out_disable_pdev;
1231         }
1232
1233         err = qlcnic_set_dma_mask(pdev, &pci_using_dac);
1234         if (err)
1235                 goto err_out_disable_pdev;
1236
1237         err = pci_request_regions(pdev, qlcnic_driver_name);
1238         if (err)
1239                 goto err_out_disable_pdev;
1240
1241         pci_set_master(pdev);
1242
1243         netdev = alloc_etherdev(sizeof(struct qlcnic_adapter));
1244         if (!netdev) {
1245                 dev_err(&pdev->dev, "failed to allocate net_device\n");
1246                 err = -ENOMEM;
1247                 goto err_out_free_res;
1248         }
1249
1250         SET_NETDEV_DEV(netdev, &pdev->dev);
1251
1252         adapter = netdev_priv(netdev);
1253         adapter->netdev  = netdev;
1254         adapter->pdev    = pdev;
1255         adapter->dev_rst_time = jiffies;
1256
1257         revision_id = pdev->revision;
1258         adapter->ahw.revision_id = revision_id;
1259
1260         rwlock_init(&adapter->ahw.crb_lock);
1261         mutex_init(&adapter->ahw.mem_lock);
1262
1263         spin_lock_init(&adapter->tx_clean_lock);
1264         INIT_LIST_HEAD(&adapter->mac_list);
1265
1266         err = qlcnic_setup_pci_map(adapter);
1267         if (err)
1268                 goto err_out_free_netdev;
1269
1270         /* This will be reset for mezz cards  */
1271         adapter->portnum = adapter->ahw.pci_func;
1272
1273         err = qlcnic_get_board_info(adapter);
1274         if (err) {
1275                 dev_err(&pdev->dev, "Error getting board config info.\n");
1276                 goto err_out_iounmap;
1277         }
1278
1279         if (qlcnic_read_mac_addr(adapter))
1280                 dev_warn(&pdev->dev, "failed to read mac addr\n");
1281
1282         if (qlcnic_setup_idc_param(adapter))
1283                 goto err_out_iounmap;
1284
1285         err = adapter->nic_ops->start_firmware(adapter);
1286         if (err) {
1287                 dev_err(&pdev->dev, "Loading fw failed.Please Reboot\n");
1288                 goto err_out_decr_ref;
1289         }
1290
1291         qlcnic_clear_stats(adapter);
1292
1293         qlcnic_setup_intr(adapter);
1294
1295         err = qlcnic_setup_netdev(adapter, netdev, pci_using_dac);
1296         if (err)
1297                 goto err_out_disable_msi;
1298
1299         pci_set_drvdata(pdev, adapter);
1300
1301         qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
1302
1303         switch (adapter->ahw.port_type) {
1304         case QLCNIC_GBE:
1305                 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1306                                 adapter->netdev->name);
1307                 break;
1308         case QLCNIC_XGBE:
1309                 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1310                                 adapter->netdev->name);
1311                 break;
1312         }
1313
1314         qlcnic_create_diag_entries(adapter);
1315
1316         return 0;
1317
1318 err_out_disable_msi:
1319         qlcnic_teardown_intr(adapter);
1320
1321 err_out_decr_ref:
1322         qlcnic_clr_all_drv_state(adapter);
1323
1324 err_out_iounmap:
1325         qlcnic_cleanup_pci_map(adapter);
1326
1327 err_out_free_netdev:
1328         free_netdev(netdev);
1329
1330 err_out_free_res:
1331         pci_release_regions(pdev);
1332
1333 err_out_disable_pdev:
1334         pci_set_drvdata(pdev, NULL);
1335         pci_disable_device(pdev);
1336         return err;
1337 }
1338
1339 static void __devexit qlcnic_remove(struct pci_dev *pdev)
1340 {
1341         struct qlcnic_adapter *adapter;
1342         struct net_device *netdev;
1343
1344         adapter = pci_get_drvdata(pdev);
1345         if (adapter == NULL)
1346                 return;
1347
1348         netdev = adapter->netdev;
1349
1350         qlcnic_cancel_fw_work(adapter);
1351
1352         unregister_netdev(netdev);
1353
1354         qlcnic_detach(adapter);
1355
1356         if (adapter->npars != NULL)
1357                 kfree(adapter->npars);
1358         if (adapter->eswitch != NULL)
1359                 kfree(adapter->eswitch);
1360
1361         qlcnic_clr_all_drv_state(adapter);
1362
1363         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1364
1365         qlcnic_teardown_intr(adapter);
1366
1367         qlcnic_remove_diag_entries(adapter);
1368
1369         qlcnic_cleanup_pci_map(adapter);
1370
1371         qlcnic_release_firmware(adapter);
1372
1373         pci_release_regions(pdev);
1374         pci_disable_device(pdev);
1375         pci_set_drvdata(pdev, NULL);
1376
1377         free_netdev(netdev);
1378 }
1379 static int __qlcnic_shutdown(struct pci_dev *pdev)
1380 {
1381         struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
1382         struct net_device *netdev = adapter->netdev;
1383         int retval;
1384
1385         netif_device_detach(netdev);
1386
1387         qlcnic_cancel_fw_work(adapter);
1388
1389         if (netif_running(netdev))
1390                 qlcnic_down(adapter, netdev);
1391
1392         qlcnic_clr_all_drv_state(adapter);
1393
1394         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1395
1396         retval = pci_save_state(pdev);
1397         if (retval)
1398                 return retval;
1399
1400         if (qlcnic_wol_supported(adapter)) {
1401                 pci_enable_wake(pdev, PCI_D3cold, 1);
1402                 pci_enable_wake(pdev, PCI_D3hot, 1);
1403         }
1404
1405         return 0;
1406 }
1407
1408 static void qlcnic_shutdown(struct pci_dev *pdev)
1409 {
1410         if (__qlcnic_shutdown(pdev))
1411                 return;
1412
1413         pci_disable_device(pdev);
1414 }
1415
1416 #ifdef CONFIG_PM
1417 static int
1418 qlcnic_suspend(struct pci_dev *pdev, pm_message_t state)
1419 {
1420         int retval;
1421
1422         retval = __qlcnic_shutdown(pdev);
1423         if (retval)
1424                 return retval;
1425
1426         pci_set_power_state(pdev, pci_choose_state(pdev, state));
1427         return 0;
1428 }
1429
1430 static int
1431 qlcnic_resume(struct pci_dev *pdev)
1432 {
1433         struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
1434         struct net_device *netdev = adapter->netdev;
1435         int err;
1436
1437         err = pci_enable_device(pdev);
1438         if (err)
1439                 return err;
1440
1441         pci_set_power_state(pdev, PCI_D0);
1442         pci_set_master(pdev);
1443         pci_restore_state(pdev);
1444
1445         err = adapter->nic_ops->start_firmware(adapter);
1446         if (err) {
1447                 dev_err(&pdev->dev, "failed to start firmware\n");
1448                 return err;
1449         }
1450
1451         if (netif_running(netdev)) {
1452                 err = qlcnic_up(adapter, netdev);
1453                 if (err)
1454                         goto done;
1455
1456                 qlcnic_config_indev_addr(netdev, NETDEV_UP);
1457         }
1458 done:
1459         netif_device_attach(netdev);
1460         qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
1461         return 0;
1462 }
1463 #endif
1464
1465 static int qlcnic_open(struct net_device *netdev)
1466 {
1467         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1468         int err;
1469
1470         if (adapter->driver_mismatch)
1471                 return -EIO;
1472
1473         err = qlcnic_attach(adapter);
1474         if (err)
1475                 return err;
1476
1477         err = __qlcnic_up(adapter, netdev);
1478         if (err)
1479                 goto err_out;
1480
1481         netif_start_queue(netdev);
1482
1483         return 0;
1484
1485 err_out:
1486         qlcnic_detach(adapter);
1487         return err;
1488 }
1489
1490 /*
1491  * qlcnic_close - Disables a network interface entry point
1492  */
1493 static int qlcnic_close(struct net_device *netdev)
1494 {
1495         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1496
1497         __qlcnic_down(adapter, netdev);
1498         return 0;
1499 }
1500
1501 static void
1502 qlcnic_tso_check(struct net_device *netdev,
1503                 struct qlcnic_host_tx_ring *tx_ring,
1504                 struct cmd_desc_type0 *first_desc,
1505                 struct sk_buff *skb)
1506 {
1507         u8 opcode = TX_ETHER_PKT;
1508         __be16 protocol = skb->protocol;
1509         u16 flags = 0, vid = 0;
1510         int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1511         struct cmd_desc_type0 *hwdesc;
1512         struct vlan_ethhdr *vh;
1513         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1514         u32 producer = tx_ring->producer;
1515
1516         if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1517
1518                 vh = (struct vlan_ethhdr *)skb->data;
1519                 protocol = vh->h_vlan_encapsulated_proto;
1520                 flags = FLAGS_VLAN_TAGGED;
1521
1522         } else if (vlan_tx_tag_present(skb)) {
1523
1524                 flags = FLAGS_VLAN_OOB;
1525                 vid = vlan_tx_tag_get(skb);
1526                 qlcnic_set_tx_vlan_tci(first_desc, vid);
1527                 vlan_oob = 1;
1528         }
1529
1530         if (*(skb->data) & BIT_0) {
1531                 flags |= BIT_0;
1532                 memcpy(&first_desc->eth_addr, skb->data, ETH_ALEN);
1533         }
1534
1535         if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1536                         skb_shinfo(skb)->gso_size > 0) {
1537
1538                 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1539
1540                 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1541                 first_desc->total_hdr_length = hdr_len;
1542                 if (vlan_oob) {
1543                         first_desc->total_hdr_length += VLAN_HLEN;
1544                         first_desc->tcp_hdr_offset = VLAN_HLEN;
1545                         first_desc->ip_hdr_offset = VLAN_HLEN;
1546                         /* Only in case of TSO on vlan device */
1547                         flags |= FLAGS_VLAN_TAGGED;
1548                 }
1549
1550                 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1551                                 TX_TCP_LSO6 : TX_TCP_LSO;
1552                 tso = 1;
1553
1554         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1555                 u8 l4proto;
1556
1557                 if (protocol == cpu_to_be16(ETH_P_IP)) {
1558                         l4proto = ip_hdr(skb)->protocol;
1559
1560                         if (l4proto == IPPROTO_TCP)
1561                                 opcode = TX_TCP_PKT;
1562                         else if (l4proto == IPPROTO_UDP)
1563                                 opcode = TX_UDP_PKT;
1564                 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1565                         l4proto = ipv6_hdr(skb)->nexthdr;
1566
1567                         if (l4proto == IPPROTO_TCP)
1568                                 opcode = TX_TCPV6_PKT;
1569                         else if (l4proto == IPPROTO_UDP)
1570                                 opcode = TX_UDPV6_PKT;
1571                 }
1572         }
1573
1574         first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1575         first_desc->ip_hdr_offset += skb_network_offset(skb);
1576         qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
1577
1578         if (!tso)
1579                 return;
1580
1581         /* For LSO, we need to copy the MAC/IP/TCP headers into
1582          * the descriptor ring
1583          */
1584         copied = 0;
1585         offset = 2;
1586
1587         if (vlan_oob) {
1588                 /* Create a TSO vlan header template for firmware */
1589
1590                 hwdesc = &tx_ring->desc_head[producer];
1591                 tx_ring->cmd_buf_arr[producer].skb = NULL;
1592
1593                 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1594                                 hdr_len + VLAN_HLEN);
1595
1596                 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1597                 skb_copy_from_linear_data(skb, vh, 12);
1598                 vh->h_vlan_proto = htons(ETH_P_8021Q);
1599                 vh->h_vlan_TCI = htons(vid);
1600                 skb_copy_from_linear_data_offset(skb, 12,
1601                                 (char *)vh + 16, copy_len - 16);
1602
1603                 copied = copy_len - VLAN_HLEN;
1604                 offset = 0;
1605
1606                 producer = get_next_index(producer, tx_ring->num_desc);
1607         }
1608
1609         while (copied < hdr_len) {
1610
1611                 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1612                                 (hdr_len - copied));
1613
1614                 hwdesc = &tx_ring->desc_head[producer];
1615                 tx_ring->cmd_buf_arr[producer].skb = NULL;
1616
1617                 skb_copy_from_linear_data_offset(skb, copied,
1618                                  (char *)hwdesc + offset, copy_len);
1619
1620                 copied += copy_len;
1621                 offset = 0;
1622
1623                 producer = get_next_index(producer, tx_ring->num_desc);
1624         }
1625
1626         tx_ring->producer = producer;
1627         barrier();
1628         adapter->stats.lso_frames++;
1629 }
1630
1631 static int
1632 qlcnic_map_tx_skb(struct pci_dev *pdev,
1633                 struct sk_buff *skb, struct qlcnic_cmd_buffer *pbuf)
1634 {
1635         struct qlcnic_skb_frag *nf;
1636         struct skb_frag_struct *frag;
1637         int i, nr_frags;
1638         dma_addr_t map;
1639
1640         nr_frags = skb_shinfo(skb)->nr_frags;
1641         nf = &pbuf->frag_array[0];
1642
1643         map = pci_map_single(pdev, skb->data,
1644                         skb_headlen(skb), PCI_DMA_TODEVICE);
1645         if (pci_dma_mapping_error(pdev, map))
1646                 goto out_err;
1647
1648         nf->dma = map;
1649         nf->length = skb_headlen(skb);
1650
1651         for (i = 0; i < nr_frags; i++) {
1652                 frag = &skb_shinfo(skb)->frags[i];
1653                 nf = &pbuf->frag_array[i+1];
1654
1655                 map = pci_map_page(pdev, frag->page, frag->page_offset,
1656                                 frag->size, PCI_DMA_TODEVICE);
1657                 if (pci_dma_mapping_error(pdev, map))
1658                         goto unwind;
1659
1660                 nf->dma = map;
1661                 nf->length = frag->size;
1662         }
1663
1664         return 0;
1665
1666 unwind:
1667         while (--i >= 0) {
1668                 nf = &pbuf->frag_array[i+1];
1669                 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
1670         }
1671
1672         nf = &pbuf->frag_array[0];
1673         pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1674
1675 out_err:
1676         return -ENOMEM;
1677 }
1678
1679 static inline void
1680 qlcnic_clear_cmddesc(u64 *desc)
1681 {
1682         desc[0] = 0ULL;
1683         desc[2] = 0ULL;
1684 }
1685
1686 netdev_tx_t
1687 qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1688 {
1689         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1690         struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
1691         struct qlcnic_cmd_buffer *pbuf;
1692         struct qlcnic_skb_frag *buffrag;
1693         struct cmd_desc_type0 *hwdesc, *first_desc;
1694         struct pci_dev *pdev;
1695         int i, k;
1696
1697         u32 producer;
1698         int frag_count, no_of_desc;
1699         u32 num_txd = tx_ring->num_desc;
1700
1701         if (!test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
1702                 netif_stop_queue(netdev);
1703                 return NETDEV_TX_BUSY;
1704         }
1705
1706         frag_count = skb_shinfo(skb)->nr_frags + 1;
1707
1708         /* 4 fragments per cmd des */
1709         no_of_desc = (frag_count + 3) >> 2;
1710
1711         if (unlikely(qlcnic_tx_avail(tx_ring) <= TX_STOP_THRESH)) {
1712                 netif_stop_queue(netdev);
1713                 smp_mb();
1714                 if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH)
1715                         netif_start_queue(netdev);
1716                 else {
1717                         adapter->stats.xmit_off++;
1718                         return NETDEV_TX_BUSY;
1719                 }
1720         }
1721
1722         producer = tx_ring->producer;
1723         pbuf = &tx_ring->cmd_buf_arr[producer];
1724
1725         pdev = adapter->pdev;
1726
1727         if (qlcnic_map_tx_skb(pdev, skb, pbuf)) {
1728                 adapter->stats.tx_dma_map_error++;
1729                 goto drop_packet;
1730         }
1731
1732         pbuf->skb = skb;
1733         pbuf->frag_count = frag_count;
1734
1735         first_desc = hwdesc = &tx_ring->desc_head[producer];
1736         qlcnic_clear_cmddesc((u64 *)hwdesc);
1737
1738         qlcnic_set_tx_frags_len(first_desc, frag_count, skb->len);
1739         qlcnic_set_tx_port(first_desc, adapter->portnum);
1740
1741         for (i = 0; i < frag_count; i++) {
1742
1743                 k = i % 4;
1744
1745                 if ((k == 0) && (i > 0)) {
1746                         /* move to next desc.*/
1747                         producer = get_next_index(producer, num_txd);
1748                         hwdesc = &tx_ring->desc_head[producer];
1749                         qlcnic_clear_cmddesc((u64 *)hwdesc);
1750                         tx_ring->cmd_buf_arr[producer].skb = NULL;
1751                 }
1752
1753                 buffrag = &pbuf->frag_array[i];
1754
1755                 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
1756                 switch (k) {
1757                 case 0:
1758                         hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1759                         break;
1760                 case 1:
1761                         hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
1762                         break;
1763                 case 2:
1764                         hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
1765                         break;
1766                 case 3:
1767                         hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
1768                         break;
1769                 }
1770         }
1771
1772         tx_ring->producer = get_next_index(producer, num_txd);
1773
1774         qlcnic_tso_check(netdev, tx_ring, first_desc, skb);
1775
1776         qlcnic_update_cmd_producer(adapter, tx_ring);
1777
1778         adapter->stats.txbytes += skb->len;
1779         adapter->stats.xmitcalled++;
1780
1781         return NETDEV_TX_OK;
1782
1783 drop_packet:
1784         adapter->stats.txdropped++;
1785         dev_kfree_skb_any(skb);
1786         return NETDEV_TX_OK;
1787 }
1788
1789 static int qlcnic_check_temp(struct qlcnic_adapter *adapter)
1790 {
1791         struct net_device *netdev = adapter->netdev;
1792         u32 temp, temp_state, temp_val;
1793         int rv = 0;
1794
1795         temp = QLCRD32(adapter, CRB_TEMP_STATE);
1796
1797         temp_state = qlcnic_get_temp_state(temp);
1798         temp_val = qlcnic_get_temp_val(temp);
1799
1800         if (temp_state == QLCNIC_TEMP_PANIC) {
1801                 dev_err(&netdev->dev,
1802                        "Device temperature %d degrees C exceeds"
1803                        " maximum allowed. Hardware has been shut down.\n",
1804                        temp_val);
1805                 rv = 1;
1806         } else if (temp_state == QLCNIC_TEMP_WARN) {
1807                 if (adapter->temp == QLCNIC_TEMP_NORMAL) {
1808                         dev_err(&netdev->dev,
1809                                "Device temperature %d degrees C "
1810                                "exceeds operating range."
1811                                " Immediate action needed.\n",
1812                                temp_val);
1813                 }
1814         } else {
1815                 if (adapter->temp == QLCNIC_TEMP_WARN) {
1816                         dev_info(&netdev->dev,
1817                                "Device temperature is now %d degrees C"
1818                                " in normal range.\n", temp_val);
1819                 }
1820         }
1821         adapter->temp = temp_state;
1822         return rv;
1823 }
1824
1825 void qlcnic_advert_link_change(struct qlcnic_adapter *adapter, int linkup)
1826 {
1827         struct net_device *netdev = adapter->netdev;
1828
1829         if (adapter->ahw.linkup && !linkup) {
1830                 dev_info(&netdev->dev, "NIC Link is down\n");
1831                 adapter->ahw.linkup = 0;
1832                 if (netif_running(netdev)) {
1833                         netif_carrier_off(netdev);
1834                         netif_stop_queue(netdev);
1835                 }
1836         } else if (!adapter->ahw.linkup && linkup) {
1837                 dev_info(&netdev->dev, "NIC Link is up\n");
1838                 adapter->ahw.linkup = 1;
1839                 if (netif_running(netdev)) {
1840                         netif_carrier_on(netdev);
1841                         netif_wake_queue(netdev);
1842                 }
1843         }
1844 }
1845
1846 static void qlcnic_tx_timeout(struct net_device *netdev)
1847 {
1848         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1849
1850         if (test_bit(__QLCNIC_RESETTING, &adapter->state))
1851                 return;
1852
1853         dev_err(&netdev->dev, "transmit timeout, resetting.\n");
1854
1855         if (++adapter->tx_timeo_cnt >= QLCNIC_MAX_TX_TIMEOUTS)
1856                 adapter->need_fw_reset = 1;
1857         else
1858                 adapter->reset_context = 1;
1859 }
1860
1861 static struct net_device_stats *qlcnic_get_stats(struct net_device *netdev)
1862 {
1863         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1864         struct net_device_stats *stats = &netdev->stats;
1865
1866         memset(stats, 0, sizeof(*stats));
1867
1868         stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
1869         stats->tx_packets = adapter->stats.xmitfinished;
1870         stats->rx_bytes = adapter->stats.rxbytes + adapter->stats.lrobytes;
1871         stats->tx_bytes = adapter->stats.txbytes;
1872         stats->rx_dropped = adapter->stats.rxdropped;
1873         stats->tx_dropped = adapter->stats.txdropped;
1874
1875         return stats;
1876 }
1877
1878 static irqreturn_t qlcnic_clear_legacy_intr(struct qlcnic_adapter *adapter)
1879 {
1880         u32 status;
1881
1882         status = readl(adapter->isr_int_vec);
1883
1884         if (!(status & adapter->int_vec_bit))
1885                 return IRQ_NONE;
1886
1887         /* check interrupt state machine, to be sure */
1888         status = readl(adapter->crb_int_state_reg);
1889         if (!ISR_LEGACY_INT_TRIGGERED(status))
1890                 return IRQ_NONE;
1891
1892         writel(0xffffffff, adapter->tgt_status_reg);
1893         /* read twice to ensure write is flushed */
1894         readl(adapter->isr_int_vec);
1895         readl(adapter->isr_int_vec);
1896
1897         return IRQ_HANDLED;
1898 }
1899
1900 static irqreturn_t qlcnic_tmp_intr(int irq, void *data)
1901 {
1902         struct qlcnic_host_sds_ring *sds_ring = data;
1903         struct qlcnic_adapter *adapter = sds_ring->adapter;
1904
1905         if (adapter->flags & QLCNIC_MSIX_ENABLED)
1906                 goto done;
1907         else if (adapter->flags & QLCNIC_MSI_ENABLED) {
1908                 writel(0xffffffff, adapter->tgt_status_reg);
1909                 goto done;
1910         }
1911
1912         if (qlcnic_clear_legacy_intr(adapter) == IRQ_NONE)
1913                 return IRQ_NONE;
1914
1915 done:
1916         adapter->diag_cnt++;
1917         qlcnic_enable_int(sds_ring);
1918         return IRQ_HANDLED;
1919 }
1920
1921 static irqreturn_t qlcnic_intr(int irq, void *data)
1922 {
1923         struct qlcnic_host_sds_ring *sds_ring = data;
1924         struct qlcnic_adapter *adapter = sds_ring->adapter;
1925
1926         if (qlcnic_clear_legacy_intr(adapter) == IRQ_NONE)
1927                 return IRQ_NONE;
1928
1929         napi_schedule(&sds_ring->napi);
1930
1931         return IRQ_HANDLED;
1932 }
1933
1934 static irqreturn_t qlcnic_msi_intr(int irq, void *data)
1935 {
1936         struct qlcnic_host_sds_ring *sds_ring = data;
1937         struct qlcnic_adapter *adapter = sds_ring->adapter;
1938
1939         /* clear interrupt */
1940         writel(0xffffffff, adapter->tgt_status_reg);
1941
1942         napi_schedule(&sds_ring->napi);
1943         return IRQ_HANDLED;
1944 }
1945
1946 static irqreturn_t qlcnic_msix_intr(int irq, void *data)
1947 {
1948         struct qlcnic_host_sds_ring *sds_ring = data;
1949
1950         napi_schedule(&sds_ring->napi);
1951         return IRQ_HANDLED;
1952 }
1953
1954 static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter)
1955 {
1956         u32 sw_consumer, hw_consumer;
1957         int count = 0, i;
1958         struct qlcnic_cmd_buffer *buffer;
1959         struct pci_dev *pdev = adapter->pdev;
1960         struct net_device *netdev = adapter->netdev;
1961         struct qlcnic_skb_frag *frag;
1962         int done;
1963         struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
1964
1965         if (!spin_trylock(&adapter->tx_clean_lock))
1966                 return 1;
1967
1968         sw_consumer = tx_ring->sw_consumer;
1969         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1970
1971         while (sw_consumer != hw_consumer) {
1972                 buffer = &tx_ring->cmd_buf_arr[sw_consumer];
1973                 if (buffer->skb) {
1974                         frag = &buffer->frag_array[0];
1975                         pci_unmap_single(pdev, frag->dma, frag->length,
1976                                          PCI_DMA_TODEVICE);
1977                         frag->dma = 0ULL;
1978                         for (i = 1; i < buffer->frag_count; i++) {
1979                                 frag++;
1980                                 pci_unmap_page(pdev, frag->dma, frag->length,
1981                                                PCI_DMA_TODEVICE);
1982                                 frag->dma = 0ULL;
1983                         }
1984
1985                         adapter->stats.xmitfinished++;
1986                         dev_kfree_skb_any(buffer->skb);
1987                         buffer->skb = NULL;
1988                 }
1989
1990                 sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
1991                 if (++count >= MAX_STATUS_HANDLE)
1992                         break;
1993         }
1994
1995         if (count && netif_running(netdev)) {
1996                 tx_ring->sw_consumer = sw_consumer;
1997
1998                 smp_mb();
1999
2000                 if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev)) {
2001                         if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) {
2002                                 netif_wake_queue(netdev);
2003                                 adapter->stats.xmit_on++;
2004                         }
2005                 }
2006                 adapter->tx_timeo_cnt = 0;
2007         }
2008         /*
2009          * If everything is freed up to consumer then check if the ring is full
2010          * If the ring is full then check if more needs to be freed and
2011          * schedule the call back again.
2012          *
2013          * This happens when there are 2 CPUs. One could be freeing and the
2014          * other filling it. If the ring is full when we get out of here and
2015          * the card has already interrupted the host then the host can miss the
2016          * interrupt.
2017          *
2018          * There is still a possible race condition and the host could miss an
2019          * interrupt. The card has to take care of this.
2020          */
2021         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
2022         done = (sw_consumer == hw_consumer);
2023         spin_unlock(&adapter->tx_clean_lock);
2024
2025         return done;
2026 }
2027
2028 static int qlcnic_poll(struct napi_struct *napi, int budget)
2029 {
2030         struct qlcnic_host_sds_ring *sds_ring =
2031                 container_of(napi, struct qlcnic_host_sds_ring, napi);
2032
2033         struct qlcnic_adapter *adapter = sds_ring->adapter;
2034
2035         int tx_complete;
2036         int work_done;
2037
2038         tx_complete = qlcnic_process_cmd_ring(adapter);
2039
2040         work_done = qlcnic_process_rcv_ring(sds_ring, budget);
2041
2042         if ((work_done < budget) && tx_complete) {
2043                 napi_complete(&sds_ring->napi);
2044                 if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
2045                         qlcnic_enable_int(sds_ring);
2046         }
2047
2048         return work_done;
2049 }
2050
2051 static int qlcnic_rx_poll(struct napi_struct *napi, int budget)
2052 {
2053         struct qlcnic_host_sds_ring *sds_ring =
2054                 container_of(napi, struct qlcnic_host_sds_ring, napi);
2055
2056         struct qlcnic_adapter *adapter = sds_ring->adapter;
2057         int work_done;
2058
2059         work_done = qlcnic_process_rcv_ring(sds_ring, budget);
2060
2061         if (work_done < budget) {
2062                 napi_complete(&sds_ring->napi);
2063                 if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
2064                         qlcnic_enable_int(sds_ring);
2065         }
2066
2067         return work_done;
2068 }
2069
2070 #ifdef CONFIG_NET_POLL_CONTROLLER
2071 static void qlcnic_poll_controller(struct net_device *netdev)
2072 {
2073         struct qlcnic_adapter *adapter = netdev_priv(netdev);
2074         disable_irq(adapter->irq);
2075         qlcnic_intr(adapter->irq, adapter);
2076         enable_irq(adapter->irq);
2077 }
2078 #endif
2079
2080 static void
2081 qlcnic_idc_debug_info(struct qlcnic_adapter *adapter, u8 encoding)
2082 {
2083         u32 val;
2084
2085         val = adapter->portnum & 0xf;
2086         val |= encoding << 7;
2087         val |= (jiffies - adapter->dev_rst_time) << 8;
2088
2089         QLCWR32(adapter, QLCNIC_CRB_DRV_SCRATCH, val);
2090         adapter->dev_rst_time = jiffies;
2091 }
2092
2093 static int
2094 qlcnic_set_drv_state(struct qlcnic_adapter *adapter, u8 state)
2095 {
2096         u32  val;
2097
2098         WARN_ON(state != QLCNIC_DEV_NEED_RESET &&
2099                         state != QLCNIC_DEV_NEED_QUISCENT);
2100
2101         if (qlcnic_api_lock(adapter))
2102                 return -EIO;
2103
2104         val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2105
2106         if (state == QLCNIC_DEV_NEED_RESET)
2107                 QLC_DEV_SET_RST_RDY(val, adapter->portnum);
2108         else if (state == QLCNIC_DEV_NEED_QUISCENT)
2109                 QLC_DEV_SET_QSCNT_RDY(val, adapter->portnum);
2110
2111         QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2112
2113         qlcnic_api_unlock(adapter);
2114
2115         return 0;
2116 }
2117
2118 static int
2119 qlcnic_clr_drv_state(struct qlcnic_adapter *adapter)
2120 {
2121         u32  val;
2122
2123         if (qlcnic_api_lock(adapter))
2124                 return -EBUSY;
2125
2126         val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2127         QLC_DEV_CLR_RST_QSCNT(val, adapter->portnum);
2128         QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2129
2130         qlcnic_api_unlock(adapter);
2131
2132         return 0;
2133 }
2134
2135 static void
2136 qlcnic_clr_all_drv_state(struct qlcnic_adapter *adapter)
2137 {
2138         u32  val;
2139
2140         if (qlcnic_api_lock(adapter))
2141                 goto err;
2142
2143         val = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
2144         QLC_DEV_CLR_REF_CNT(val, adapter->portnum);
2145         QLCWR32(adapter, QLCNIC_CRB_DEV_REF_COUNT, val);
2146
2147         if (!(val & 0x11111111))
2148                 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_COLD);
2149
2150         val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2151         QLC_DEV_CLR_RST_QSCNT(val, adapter->portnum);
2152         QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2153
2154         qlcnic_api_unlock(adapter);
2155 err:
2156         adapter->fw_fail_cnt = 0;
2157         clear_bit(__QLCNIC_START_FW, &adapter->state);
2158         clear_bit(__QLCNIC_RESETTING, &adapter->state);
2159 }
2160
2161 /* Grab api lock, before checking state */
2162 static int
2163 qlcnic_check_drv_state(struct qlcnic_adapter *adapter)
2164 {
2165         int act, state;
2166
2167         state = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2168         act = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
2169
2170         if (((state & 0x11111111) == (act & 0x11111111)) ||
2171                         ((act & 0x11111111) == ((state >> 1) & 0x11111111)))
2172                 return 0;
2173         else
2174                 return 1;
2175 }
2176
2177 static int qlcnic_check_idc_ver(struct qlcnic_adapter *adapter)
2178 {
2179         u32 val = QLCRD32(adapter, QLCNIC_CRB_DRV_IDC_VER);
2180
2181         if (val != QLCNIC_DRV_IDC_VER) {
2182                 dev_warn(&adapter->pdev->dev, "IDC Version mismatch, driver's"
2183                         " idc ver = %x; reqd = %x\n", QLCNIC_DRV_IDC_VER, val);
2184         }
2185
2186         return 0;
2187 }
2188
2189 static int
2190 qlcnic_can_start_firmware(struct qlcnic_adapter *adapter)
2191 {
2192         u32 val, prev_state;
2193         u8 dev_init_timeo = adapter->dev_init_timeo;
2194         u8 portnum = adapter->portnum;
2195         u8 ret;
2196
2197         if (test_and_clear_bit(__QLCNIC_START_FW, &adapter->state))
2198                 return 1;
2199
2200         if (qlcnic_api_lock(adapter))
2201                 return -1;
2202
2203         val = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
2204         if (!(val & (1 << (portnum * 4)))) {
2205                 QLC_DEV_SET_REF_CNT(val, portnum);
2206                 QLCWR32(adapter, QLCNIC_CRB_DEV_REF_COUNT, val);
2207         }
2208
2209         prev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2210         QLCDB(adapter, HW, "Device state = %u\n", prev_state);
2211
2212         switch (prev_state) {
2213         case QLCNIC_DEV_COLD:
2214                 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_INITIALIZING);
2215                 QLCWR32(adapter, QLCNIC_CRB_DRV_IDC_VER, QLCNIC_DRV_IDC_VER);
2216                 qlcnic_idc_debug_info(adapter, 0);
2217                 qlcnic_api_unlock(adapter);
2218                 return 1;
2219
2220         case QLCNIC_DEV_READY:
2221                 ret = qlcnic_check_idc_ver(adapter);
2222                 qlcnic_api_unlock(adapter);
2223                 return ret;
2224
2225         case QLCNIC_DEV_NEED_RESET:
2226                 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2227                 QLC_DEV_SET_RST_RDY(val, portnum);
2228                 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2229                 break;
2230
2231         case QLCNIC_DEV_NEED_QUISCENT:
2232                 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2233                 QLC_DEV_SET_QSCNT_RDY(val, portnum);
2234                 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2235                 break;
2236
2237         case QLCNIC_DEV_FAILED:
2238                 dev_err(&adapter->pdev->dev, "Device in failed state.\n");
2239                 qlcnic_api_unlock(adapter);
2240                 return -1;
2241
2242         case QLCNIC_DEV_INITIALIZING:
2243         case QLCNIC_DEV_QUISCENT:
2244                 break;
2245         }
2246
2247         qlcnic_api_unlock(adapter);
2248
2249         do {
2250                 msleep(1000);
2251                 prev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2252
2253                 if (prev_state == QLCNIC_DEV_QUISCENT)
2254                         continue;
2255         } while ((prev_state != QLCNIC_DEV_READY) && --dev_init_timeo);
2256
2257         if (!dev_init_timeo) {
2258                 dev_err(&adapter->pdev->dev,
2259                         "Waiting for device to initialize timeout\n");
2260                 return -1;
2261         }
2262
2263         if (qlcnic_api_lock(adapter))
2264                 return -1;
2265
2266         val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2267         QLC_DEV_CLR_RST_QSCNT(val, portnum);
2268         QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2269
2270         ret = qlcnic_check_idc_ver(adapter);
2271         qlcnic_api_unlock(adapter);
2272
2273         return ret;
2274 }
2275
2276 static void
2277 qlcnic_fwinit_work(struct work_struct *work)
2278 {
2279         struct qlcnic_adapter *adapter = container_of(work,
2280                         struct qlcnic_adapter, fw_work.work);
2281         u32 dev_state = 0xf, npar_state;
2282
2283         if (qlcnic_api_lock(adapter))
2284                 goto err_ret;
2285
2286         dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2287         if (dev_state ==  QLCNIC_DEV_QUISCENT) {
2288                 qlcnic_api_unlock(adapter);
2289                 qlcnic_schedule_work(adapter, qlcnic_fwinit_work,
2290                                                 FW_POLL_DELAY * 2);
2291                 return;
2292         }
2293
2294         if (adapter->op_mode == QLCNIC_NON_PRIV_FUNC) {
2295                 npar_state = QLCRD32(adapter, QLCNIC_CRB_DEV_NPAR_STATE);
2296                 if (npar_state == QLCNIC_DEV_NPAR_RDY) {
2297                         qlcnic_api_unlock(adapter);
2298                         goto wait_npar;
2299                 } else {
2300                         qlcnic_schedule_work(adapter, qlcnic_fwinit_work,
2301                                 FW_POLL_DELAY);
2302                         qlcnic_api_unlock(adapter);
2303                         return;
2304                 }
2305         }
2306
2307         if (adapter->fw_wait_cnt++ > adapter->reset_ack_timeo) {
2308                 dev_err(&adapter->pdev->dev, "Reset:Failed to get ack %d sec\n",
2309                                         adapter->reset_ack_timeo);
2310                 goto skip_ack_check;
2311         }
2312
2313         if (!qlcnic_check_drv_state(adapter)) {
2314 skip_ack_check:
2315                 dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2316
2317                 if (dev_state == QLCNIC_DEV_NEED_QUISCENT) {
2318                         QLCWR32(adapter, QLCNIC_CRB_DEV_STATE,
2319                                                 QLCNIC_DEV_QUISCENT);
2320                         qlcnic_schedule_work(adapter, qlcnic_fwinit_work,
2321                                                 FW_POLL_DELAY * 2);
2322                         QLCDB(adapter, DRV, "Quiscing the driver\n");
2323                         qlcnic_idc_debug_info(adapter, 0);
2324
2325                         qlcnic_api_unlock(adapter);
2326                         return;
2327                 }
2328
2329                 if (dev_state == QLCNIC_DEV_NEED_RESET) {
2330                         QLCWR32(adapter, QLCNIC_CRB_DEV_STATE,
2331                                                 QLCNIC_DEV_INITIALIZING);
2332                         set_bit(__QLCNIC_START_FW, &adapter->state);
2333                         QLCDB(adapter, DRV, "Restarting fw\n");
2334                         qlcnic_idc_debug_info(adapter, 0);
2335                 }
2336
2337                 qlcnic_api_unlock(adapter);
2338
2339                 if (!adapter->nic_ops->start_firmware(adapter)) {
2340                         qlcnic_schedule_work(adapter, qlcnic_attach_work, 0);
2341                         return;
2342                 }
2343                 goto err_ret;
2344         }
2345
2346         qlcnic_api_unlock(adapter);
2347
2348 wait_npar:
2349         dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2350         QLCDB(adapter, HW, "Func waiting: Device state=%u\n", dev_state);
2351
2352         switch (dev_state) {
2353         case QLCNIC_DEV_QUISCENT:
2354         case QLCNIC_DEV_NEED_QUISCENT:
2355         case QLCNIC_DEV_NEED_RESET:
2356                 qlcnic_schedule_work(adapter,
2357                         qlcnic_fwinit_work, FW_POLL_DELAY);
2358                 return;
2359         case QLCNIC_DEV_FAILED:
2360                 break;
2361
2362         default:
2363                 if (!adapter->nic_ops->start_firmware(adapter)) {
2364                         qlcnic_schedule_work(adapter, qlcnic_attach_work, 0);
2365                         return;
2366                 }
2367         }
2368
2369 err_ret:
2370         dev_err(&adapter->pdev->dev, "Fwinit work failed state=%u "
2371                 "fw_wait_cnt=%u\n", dev_state, adapter->fw_wait_cnt);
2372         netif_device_attach(adapter->netdev);
2373         qlcnic_clr_all_drv_state(adapter);
2374 }
2375
2376 static void
2377 qlcnic_detach_work(struct work_struct *work)
2378 {
2379         struct qlcnic_adapter *adapter = container_of(work,
2380                         struct qlcnic_adapter, fw_work.work);
2381         struct net_device *netdev = adapter->netdev;
2382         u32 status;
2383
2384         netif_device_detach(netdev);
2385
2386         qlcnic_down(adapter, netdev);
2387
2388         status = QLCRD32(adapter, QLCNIC_PEG_HALT_STATUS1);
2389
2390         if (status & QLCNIC_RCODE_FATAL_ERROR)
2391                 goto err_ret;
2392
2393         if (adapter->temp == QLCNIC_TEMP_PANIC)
2394                 goto err_ret;
2395
2396         if (qlcnic_set_drv_state(adapter, adapter->dev_state))
2397                 goto err_ret;
2398
2399         adapter->fw_wait_cnt = 0;
2400
2401         qlcnic_schedule_work(adapter, qlcnic_fwinit_work, FW_POLL_DELAY);
2402
2403         return;
2404
2405 err_ret:
2406         dev_err(&adapter->pdev->dev, "detach failed; status=%d temp=%d\n",
2407                         status, adapter->temp);
2408         netif_device_attach(netdev);
2409         qlcnic_clr_all_drv_state(adapter);
2410
2411 }
2412
2413 /*Transit to RESET state from READY state only */
2414 static void
2415 qlcnic_dev_request_reset(struct qlcnic_adapter *adapter)
2416 {
2417         u32 state;
2418
2419         if (qlcnic_api_lock(adapter))
2420                 return;
2421
2422         state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2423
2424         if (state == QLCNIC_DEV_READY) {
2425                 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_NEED_RESET);
2426                 QLCDB(adapter, DRV, "NEED_RESET state set\n");
2427                 qlcnic_idc_debug_info(adapter, 0);
2428         }
2429
2430         qlcnic_api_unlock(adapter);
2431 }
2432
2433 /* Transit to NPAR READY state from NPAR NOT READY state */
2434 static void
2435 qlcnic_dev_set_npar_ready(struct qlcnic_adapter *adapter)
2436 {
2437         u32 state;
2438
2439         if (qlcnic_api_lock(adapter))
2440                 return;
2441
2442         state = QLCRD32(adapter, QLCNIC_CRB_DEV_NPAR_STATE);
2443
2444         if (state != QLCNIC_DEV_NPAR_RDY) {
2445                 QLCWR32(adapter, QLCNIC_CRB_DEV_NPAR_STATE,
2446                         QLCNIC_DEV_NPAR_RDY);
2447                 QLCDB(adapter, DRV, "NPAR READY state set\n");
2448         }
2449
2450         qlcnic_api_unlock(adapter);
2451 }
2452
2453 static void
2454 qlcnic_schedule_work(struct qlcnic_adapter *adapter,
2455                 work_func_t func, int delay)
2456 {
2457         INIT_DELAYED_WORK(&adapter->fw_work, func);
2458         schedule_delayed_work(&adapter->fw_work, round_jiffies_relative(delay));
2459 }
2460
2461 static void
2462 qlcnic_cancel_fw_work(struct qlcnic_adapter *adapter)
2463 {
2464         while (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
2465                 msleep(10);
2466
2467         cancel_delayed_work_sync(&adapter->fw_work);
2468 }
2469
2470 static void
2471 qlcnic_attach_work(struct work_struct *work)
2472 {
2473         struct qlcnic_adapter *adapter = container_of(work,
2474                                 struct qlcnic_adapter, fw_work.work);
2475         struct net_device *netdev = adapter->netdev;
2476
2477         if (netif_running(netdev)) {
2478                 if (qlcnic_up(adapter, netdev))
2479                         goto done;
2480
2481                 qlcnic_config_indev_addr(netdev, NETDEV_UP);
2482         }
2483
2484 done:
2485         netif_device_attach(netdev);
2486         adapter->fw_fail_cnt = 0;
2487         clear_bit(__QLCNIC_RESETTING, &adapter->state);
2488
2489         if (!qlcnic_clr_drv_state(adapter))
2490                 qlcnic_schedule_work(adapter, qlcnic_fw_poll_work,
2491                                                         FW_POLL_DELAY);
2492 }
2493
2494 static int
2495 qlcnic_check_health(struct qlcnic_adapter *adapter)
2496 {
2497         u32 state = 0, heartbit;
2498         struct net_device *netdev = adapter->netdev;
2499
2500         if (qlcnic_check_temp(adapter))
2501                 goto detach;
2502
2503         if (adapter->need_fw_reset)
2504                 qlcnic_dev_request_reset(adapter);
2505
2506         state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2507         if (state == QLCNIC_DEV_NEED_RESET || state == QLCNIC_DEV_NEED_QUISCENT)
2508                 adapter->need_fw_reset = 1;
2509
2510         heartbit = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
2511         if (heartbit != adapter->heartbit) {
2512                 adapter->heartbit = heartbit;
2513                 adapter->fw_fail_cnt = 0;
2514                 if (adapter->need_fw_reset)
2515                         goto detach;
2516
2517                 if (adapter->reset_context) {
2518                         qlcnic_reset_hw_context(adapter);
2519                         adapter->netdev->trans_start = jiffies;
2520                 }
2521
2522                 return 0;
2523         }
2524
2525         if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2526                 return 0;
2527
2528         qlcnic_dev_request_reset(adapter);
2529
2530         clear_bit(__QLCNIC_FW_ATTACHED, &adapter->state);
2531
2532         dev_info(&netdev->dev, "firmware hang detected\n");
2533
2534 detach:
2535         adapter->dev_state = (state == QLCNIC_DEV_NEED_QUISCENT) ? state :
2536                 QLCNIC_DEV_NEED_RESET;
2537
2538         if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
2539                 !test_and_set_bit(__QLCNIC_RESETTING, &adapter->state)) {
2540
2541                 qlcnic_schedule_work(adapter, qlcnic_detach_work, 0);
2542                 QLCDB(adapter, DRV, "fw recovery scheduled.\n");
2543         }
2544
2545         return 1;
2546 }
2547
2548 static void
2549 qlcnic_fw_poll_work(struct work_struct *work)
2550 {
2551         struct qlcnic_adapter *adapter = container_of(work,
2552                                 struct qlcnic_adapter, fw_work.work);
2553
2554         if (test_bit(__QLCNIC_RESETTING, &adapter->state))
2555                 goto reschedule;
2556
2557
2558         if (qlcnic_check_health(adapter))
2559                 return;
2560
2561 reschedule:
2562         qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
2563 }
2564
2565 static int
2566 qlcnicvf_start_firmware(struct qlcnic_adapter *adapter)
2567 {
2568         int err;
2569
2570         err = qlcnic_can_start_firmware(adapter);
2571         if (err)
2572                 return err;
2573
2574         qlcnic_check_options(adapter);
2575
2576         adapter->need_fw_reset = 0;
2577
2578         return err;
2579 }
2580
2581 static int
2582 qlcnicvf_config_bridged_mode(struct qlcnic_adapter *adapter, u32 enable)
2583 {
2584         return -EOPNOTSUPP;
2585 }
2586
2587 static int
2588 qlcnicvf_config_led(struct qlcnic_adapter *adapter, u32 state, u32 rate)
2589 {
2590         return -EOPNOTSUPP;
2591 }
2592
2593 static int
2594 qlcnicvf_set_ilb_mode(struct qlcnic_adapter *adapter)
2595 {
2596         return -EOPNOTSUPP;
2597 }
2598
2599 static void
2600 qlcnicvf_clear_ilb_mode(struct qlcnic_adapter *adapter)
2601 {
2602         return;
2603 }
2604
2605 static ssize_t
2606 qlcnic_store_bridged_mode(struct device *dev,
2607                 struct device_attribute *attr, const char *buf, size_t len)
2608 {
2609         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2610         unsigned long new;
2611         int ret = -EINVAL;
2612
2613         if (!(adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG))
2614                 goto err_out;
2615
2616         if (!test_bit(__QLCNIC_DEV_UP, &adapter->state))
2617                 goto err_out;
2618
2619         if (strict_strtoul(buf, 2, &new))
2620                 goto err_out;
2621
2622         if (!adapter->nic_ops->config_bridged_mode(adapter, !!new))
2623                 ret = len;
2624
2625 err_out:
2626         return ret;
2627 }
2628
2629 static ssize_t
2630 qlcnic_show_bridged_mode(struct device *dev,
2631                 struct device_attribute *attr, char *buf)
2632 {
2633         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2634         int bridged_mode = 0;
2635
2636         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
2637                 bridged_mode = !!(adapter->flags & QLCNIC_BRIDGE_ENABLED);
2638
2639         return sprintf(buf, "%d\n", bridged_mode);
2640 }
2641
2642 static struct device_attribute dev_attr_bridged_mode = {
2643        .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2644        .show = qlcnic_show_bridged_mode,
2645        .store = qlcnic_store_bridged_mode,
2646 };
2647
2648 static ssize_t
2649 qlcnic_store_diag_mode(struct device *dev,
2650                 struct device_attribute *attr, const char *buf, size_t len)
2651 {
2652         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2653         unsigned long new;
2654
2655         if (strict_strtoul(buf, 2, &new))
2656                 return -EINVAL;
2657
2658         if (!!new != !!(adapter->flags & QLCNIC_DIAG_ENABLED))
2659                 adapter->flags ^= QLCNIC_DIAG_ENABLED;
2660
2661         return len;
2662 }
2663
2664 static ssize_t
2665 qlcnic_show_diag_mode(struct device *dev,
2666                 struct device_attribute *attr, char *buf)
2667 {
2668         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2669
2670         return sprintf(buf, "%d\n",
2671                         !!(adapter->flags & QLCNIC_DIAG_ENABLED));
2672 }
2673
2674 static struct device_attribute dev_attr_diag_mode = {
2675         .attr = {.name = "diag_mode", .mode = (S_IRUGO | S_IWUSR)},
2676         .show = qlcnic_show_diag_mode,
2677         .store = qlcnic_store_diag_mode,
2678 };
2679
2680 static int
2681 qlcnic_sysfs_validate_crb(struct qlcnic_adapter *adapter,
2682                 loff_t offset, size_t size)
2683 {
2684         size_t crb_size = 4;
2685
2686         if (!(adapter->flags & QLCNIC_DIAG_ENABLED))
2687                 return -EIO;
2688
2689         if (offset < QLCNIC_PCI_CRBSPACE) {
2690                 if (ADDR_IN_RANGE(offset, QLCNIC_PCI_CAMQM,
2691                                         QLCNIC_PCI_CAMQM_END))
2692                         crb_size = 8;
2693                 else
2694                         return -EINVAL;
2695         }
2696
2697         if ((size != crb_size) || (offset & (crb_size-1)))
2698                 return  -EINVAL;
2699
2700         return 0;
2701 }
2702
2703 static ssize_t
2704 qlcnic_sysfs_read_crb(struct file *filp, struct kobject *kobj,
2705                 struct bin_attribute *attr,
2706                 char *buf, loff_t offset, size_t size)
2707 {
2708         struct device *dev = container_of(kobj, struct device, kobj);
2709         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2710         u32 data;
2711         u64 qmdata;
2712         int ret;
2713
2714         ret = qlcnic_sysfs_validate_crb(adapter, offset, size);
2715         if (ret != 0)
2716                 return ret;
2717
2718         if (ADDR_IN_RANGE(offset, QLCNIC_PCI_CAMQM, QLCNIC_PCI_CAMQM_END)) {
2719                 qlcnic_pci_camqm_read_2M(adapter, offset, &qmdata);
2720                 memcpy(buf, &qmdata, size);
2721         } else {
2722                 data = QLCRD32(adapter, offset);
2723                 memcpy(buf, &data, size);
2724         }
2725         return size;
2726 }
2727
2728 static ssize_t
2729 qlcnic_sysfs_write_crb(struct file *filp, struct kobject *kobj,
2730                 struct bin_attribute *attr,
2731                 char *buf, loff_t offset, size_t size)
2732 {
2733         struct device *dev = container_of(kobj, struct device, kobj);
2734         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2735         u32 data;
2736         u64 qmdata;
2737         int ret;
2738
2739         ret = qlcnic_sysfs_validate_crb(adapter, offset, size);
2740         if (ret != 0)
2741                 return ret;
2742
2743         if (ADDR_IN_RANGE(offset, QLCNIC_PCI_CAMQM, QLCNIC_PCI_CAMQM_END)) {
2744                 memcpy(&qmdata, buf, size);
2745                 qlcnic_pci_camqm_write_2M(adapter, offset, qmdata);
2746         } else {
2747                 memcpy(&data, buf, size);
2748                 QLCWR32(adapter, offset, data);
2749         }
2750         return size;
2751 }
2752
2753 static int
2754 qlcnic_sysfs_validate_mem(struct qlcnic_adapter *adapter,
2755                 loff_t offset, size_t size)
2756 {
2757         if (!(adapter->flags & QLCNIC_DIAG_ENABLED))
2758                 return -EIO;
2759
2760         if ((size != 8) || (offset & 0x7))
2761                 return  -EIO;
2762
2763         return 0;
2764 }
2765
2766 static ssize_t
2767 qlcnic_sysfs_read_mem(struct file *filp, struct kobject *kobj,
2768                 struct bin_attribute *attr,
2769                 char *buf, loff_t offset, size_t size)
2770 {
2771         struct device *dev = container_of(kobj, struct device, kobj);
2772         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2773         u64 data;
2774         int ret;
2775
2776         ret = qlcnic_sysfs_validate_mem(adapter, offset, size);
2777         if (ret != 0)
2778                 return ret;
2779
2780         if (qlcnic_pci_mem_read_2M(adapter, offset, &data))
2781                 return -EIO;
2782
2783         memcpy(buf, &data, size);
2784
2785         return size;
2786 }
2787
2788 static ssize_t
2789 qlcnic_sysfs_write_mem(struct file *filp, struct kobject *kobj,
2790                 struct bin_attribute *attr,
2791                 char *buf, loff_t offset, size_t size)
2792 {
2793         struct device *dev = container_of(kobj, struct device, kobj);
2794         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2795         u64 data;
2796         int ret;
2797
2798         ret = qlcnic_sysfs_validate_mem(adapter, offset, size);
2799         if (ret != 0)
2800                 return ret;
2801
2802         memcpy(&data, buf, size);
2803
2804         if (qlcnic_pci_mem_write_2M(adapter, offset, data))
2805                 return -EIO;
2806
2807         return size;
2808 }
2809
2810
2811 static struct bin_attribute bin_attr_crb = {
2812         .attr = {.name = "crb", .mode = (S_IRUGO | S_IWUSR)},
2813         .size = 0,
2814         .read = qlcnic_sysfs_read_crb,
2815         .write = qlcnic_sysfs_write_crb,
2816 };
2817
2818 static struct bin_attribute bin_attr_mem = {
2819         .attr = {.name = "mem", .mode = (S_IRUGO | S_IWUSR)},
2820         .size = 0,
2821         .read = qlcnic_sysfs_read_mem,
2822         .write = qlcnic_sysfs_write_mem,
2823 };
2824
2825 static void
2826 qlcnic_create_sysfs_entries(struct qlcnic_adapter *adapter)
2827 {
2828         struct device *dev = &adapter->pdev->dev;
2829
2830         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
2831                 if (device_create_file(dev, &dev_attr_bridged_mode))
2832                         dev_warn(dev,
2833                                 "failed to create bridged_mode sysfs entry\n");
2834 }
2835
2836 static void
2837 qlcnic_remove_sysfs_entries(struct qlcnic_adapter *adapter)
2838 {
2839         struct device *dev = &adapter->pdev->dev;
2840
2841         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
2842                 device_remove_file(dev, &dev_attr_bridged_mode);
2843 }
2844
2845 static void
2846 qlcnic_create_diag_entries(struct qlcnic_adapter *adapter)
2847 {
2848         struct device *dev = &adapter->pdev->dev;
2849
2850         if (device_create_file(dev, &dev_attr_diag_mode))
2851                 dev_info(dev, "failed to create diag_mode sysfs entry\n");
2852         if (device_create_bin_file(dev, &bin_attr_crb))
2853                 dev_info(dev, "failed to create crb sysfs entry\n");
2854         if (device_create_bin_file(dev, &bin_attr_mem))
2855                 dev_info(dev, "failed to create mem sysfs entry\n");
2856 }
2857
2858
2859 static void
2860 qlcnic_remove_diag_entries(struct qlcnic_adapter *adapter)
2861 {
2862         struct device *dev = &adapter->pdev->dev;
2863
2864         device_remove_file(dev, &dev_attr_diag_mode);
2865         device_remove_bin_file(dev, &bin_attr_crb);
2866         device_remove_bin_file(dev, &bin_attr_mem);
2867 }
2868
2869 #ifdef CONFIG_INET
2870
2871 #define is_qlcnic_netdev(dev) (dev->netdev_ops == &qlcnic_netdev_ops)
2872
2873 static void
2874 qlcnic_config_indev_addr(struct net_device *dev, unsigned long event)
2875 {
2876         struct in_device *indev;
2877         struct qlcnic_adapter *adapter = netdev_priv(dev);
2878
2879         indev = in_dev_get(dev);
2880         if (!indev)
2881                 return;
2882
2883         for_ifa(indev) {
2884                 switch (event) {
2885                 case NETDEV_UP:
2886                         qlcnic_config_ipaddr(adapter,
2887                                         ifa->ifa_address, QLCNIC_IP_UP);
2888                         break;
2889                 case NETDEV_DOWN:
2890                         qlcnic_config_ipaddr(adapter,
2891                                         ifa->ifa_address, QLCNIC_IP_DOWN);
2892                         break;
2893                 default:
2894                         break;
2895                 }
2896         } endfor_ifa(indev);
2897
2898         in_dev_put(indev);
2899 }
2900
2901 static int qlcnic_netdev_event(struct notifier_block *this,
2902                                  unsigned long event, void *ptr)
2903 {
2904         struct qlcnic_adapter *adapter;
2905         struct net_device *dev = (struct net_device *)ptr;
2906
2907 recheck:
2908         if (dev == NULL)
2909                 goto done;
2910
2911         if (dev->priv_flags & IFF_802_1Q_VLAN) {
2912                 dev = vlan_dev_real_dev(dev);
2913                 goto recheck;
2914         }
2915
2916         if (!is_qlcnic_netdev(dev))
2917                 goto done;
2918
2919         adapter = netdev_priv(dev);
2920
2921         if (!adapter)
2922                 goto done;
2923
2924         if (!test_bit(__QLCNIC_DEV_UP, &adapter->state))
2925                 goto done;
2926
2927         qlcnic_config_indev_addr(dev, event);
2928 done:
2929         return NOTIFY_DONE;
2930 }
2931
2932 static int
2933 qlcnic_inetaddr_event(struct notifier_block *this,
2934                 unsigned long event, void *ptr)
2935 {
2936         struct qlcnic_adapter *adapter;
2937         struct net_device *dev;
2938
2939         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2940
2941         dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
2942
2943 recheck:
2944         if (dev == NULL || !netif_running(dev))
2945                 goto done;
2946
2947         if (dev->priv_flags & IFF_802_1Q_VLAN) {
2948                 dev = vlan_dev_real_dev(dev);
2949                 goto recheck;
2950         }
2951
2952         if (!is_qlcnic_netdev(dev))
2953                 goto done;
2954
2955         adapter = netdev_priv(dev);
2956
2957         if (!adapter)
2958                 goto done;
2959
2960         if (!test_bit(__QLCNIC_DEV_UP, &adapter->state))
2961                 goto done;
2962
2963         switch (event) {
2964         case NETDEV_UP:
2965                 qlcnic_config_ipaddr(adapter, ifa->ifa_address, QLCNIC_IP_UP);
2966                 break;
2967         case NETDEV_DOWN:
2968                 qlcnic_config_ipaddr(adapter, ifa->ifa_address, QLCNIC_IP_DOWN);
2969                 break;
2970         default:
2971                 break;
2972         }
2973
2974 done:
2975         return NOTIFY_DONE;
2976 }
2977
2978 static struct notifier_block    qlcnic_netdev_cb = {
2979         .notifier_call = qlcnic_netdev_event,
2980 };
2981
2982 static struct notifier_block qlcnic_inetaddr_cb = {
2983         .notifier_call = qlcnic_inetaddr_event,
2984 };
2985 #else
2986 static void
2987 qlcnic_config_indev_addr(struct net_device *dev, unsigned long event)
2988 { }
2989 #endif
2990
2991 static struct pci_driver qlcnic_driver = {
2992         .name = qlcnic_driver_name,
2993         .id_table = qlcnic_pci_tbl,
2994         .probe = qlcnic_probe,
2995         .remove = __devexit_p(qlcnic_remove),
2996 #ifdef CONFIG_PM
2997         .suspend = qlcnic_suspend,
2998         .resume = qlcnic_resume,
2999 #endif
3000         .shutdown = qlcnic_shutdown
3001 };
3002
3003 static int __init qlcnic_init_module(void)
3004 {
3005
3006         printk(KERN_INFO "%s\n", qlcnic_driver_string);
3007
3008 #ifdef CONFIG_INET
3009         register_netdevice_notifier(&qlcnic_netdev_cb);
3010         register_inetaddr_notifier(&qlcnic_inetaddr_cb);
3011 #endif
3012
3013
3014         return pci_register_driver(&qlcnic_driver);
3015 }
3016
3017 module_init(qlcnic_init_module);
3018
3019 static void __exit qlcnic_exit_module(void)
3020 {
3021
3022         pci_unregister_driver(&qlcnic_driver);
3023
3024 #ifdef CONFIG_INET
3025         unregister_inetaddr_notifier(&qlcnic_inetaddr_cb);
3026         unregister_netdevice_notifier(&qlcnic_netdev_cb);
3027 #endif
3028 }
3029
3030 module_exit(qlcnic_exit_module);