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_tx_timeout_task(struct work_struct *work);
  79 static void qlcnic_attach_work(struct work_struct *work);
  80 static void qlcnic_fwinit_work(struct work_struct *work);
  81 static void qlcnic_fw_poll_work(struct work_struct *work);
  82 static void qlcnic_schedule_work(struct qlcnic_adapter *adapter,
  83                 work_func_t func, int delay);
  84 static void qlcnic_cancel_fw_work(struct qlcnic_adapter *adapter);
  85 static int qlcnic_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         if (qlcnic_tx_avail(tx_ring) <= TX_STOP_THRESH) {
 136                 netif_stop_queue(adapter->netdev);
 137                 smp_mb();
 138                 adapter->stats.xmit_off++;
 139         }
 140 }
 141
 142 static const u32 msi_tgt_status[8] = {
 143         ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
 144         ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
 145         ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
 146         ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
 147 };
 148
 149 static const
 150 struct qlcnic_legacy_intr_set legacy_intr[] = QLCNIC_LEGACY_INTR_CONFIG;
 151
 152 static inline void qlcnic_disable_int(struct qlcnic_host_sds_ring *sds_ring)
 153 {
 154         writel(0, sds_ring->crb_intr_mask);
 155 }
 156
 157 static inline void qlcnic_enable_int(struct qlcnic_host_sds_ring *sds_ring)
 158 {
 159         struct qlcnic_adapter *adapter = sds_ring->adapter;
 160
 161         writel(0x1, sds_ring->crb_intr_mask);
 162
 163         if (!QLCNIC_IS_MSI_FAMILY(adapter))
 164                 writel(0xfbff, adapter->tgt_mask_reg);
 165 }
 166
 167 static int
 168 qlcnic_alloc_sds_rings(struct qlcnic_recv_context *recv_ctx, int count)
 169 {
 170         int size = sizeof(struct qlcnic_host_sds_ring) * count;
 171
 172         recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
 173
 174         return (recv_ctx->sds_rings == NULL);
 175 }
 176
 177 static void
 178 qlcnic_free_sds_rings(struct qlcnic_recv_context *recv_ctx)
 179 {
 180         if (recv_ctx->sds_rings != NULL)
 181                 kfree(recv_ctx->sds_rings);
 182
 183         recv_ctx->sds_rings = NULL;
 184 }
 185
 186 static int
 187 qlcnic_napi_add(struct qlcnic_adapter *adapter, struct net_device *netdev)
 188 {
 189         int ring;
 190         struct qlcnic_host_sds_ring *sds_ring;
 191         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 192
 193         if (qlcnic_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
 194                 return -ENOMEM;
 195
 196         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 197                 sds_ring = &recv_ctx->sds_rings[ring];
 198                 netif_napi_add(netdev, &sds_ring->napi,
 199                                 qlcnic_poll, QLCNIC_NETDEV_WEIGHT);
 200         }
 201
 202         return 0;
 203 }
 204
 205 static void
 206 qlcnic_napi_del(struct qlcnic_adapter *adapter)
 207 {
 208         int ring;
 209         struct qlcnic_host_sds_ring *sds_ring;
 210         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 211
 212         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 213                 sds_ring = &recv_ctx->sds_rings[ring];
 214                 netif_napi_del(&sds_ring->napi);
 215         }
 216
 217         qlcnic_free_sds_rings(&adapter->recv_ctx);
 218 }
 219
 220 static void
 221 qlcnic_napi_enable(struct qlcnic_adapter *adapter)
 222 {
 223         int ring;
 224         struct qlcnic_host_sds_ring *sds_ring;
 225         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 226
 227         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
 228                 return;
 229
 230         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 231                 sds_ring = &recv_ctx->sds_rings[ring];
 232                 napi_enable(&sds_ring->napi);
 233                 qlcnic_enable_int(sds_ring);
 234         }
 235 }
 236
 237 static void
 238 qlcnic_napi_disable(struct qlcnic_adapter *adapter)
 239 {
 240         int ring;
 241         struct qlcnic_host_sds_ring *sds_ring;
 242         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 243
 244         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
 245                 return;
 246
 247         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 248                 sds_ring = &recv_ctx->sds_rings[ring];
 249                 qlcnic_disable_int(sds_ring);
 250                 napi_synchronize(&sds_ring->napi);
 251                 napi_disable(&sds_ring->napi);
 252         }
 253 }
 254
 255 static void qlcnic_clear_stats(struct qlcnic_adapter *adapter)
 256 {
 257         memset(&adapter->stats, 0, sizeof(adapter->stats));
 258 }
 259
 260 static void qlcnic_set_port_mode(struct qlcnic_adapter *adapter)
 261 {
 262         u32 val, data;
 263
 264         val = adapter->ahw.board_type;
 265         if ((val == QLCNIC_BRDTYPE_P3_HMEZ) ||
 266                 (val == QLCNIC_BRDTYPE_P3_XG_LOM)) {
 267                 if (port_mode == QLCNIC_PORT_MODE_802_3_AP) {
 268                         data = QLCNIC_PORT_MODE_802_3_AP;
 269                         QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
 270                 } else if (port_mode == QLCNIC_PORT_MODE_XG) {
 271                         data = QLCNIC_PORT_MODE_XG;
 272                         QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
 273                 } else if (port_mode == QLCNIC_PORT_MODE_AUTO_NEG_1G) {
 274                         data = QLCNIC_PORT_MODE_AUTO_NEG_1G;
 275                         QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
 276                 } else if (port_mode == QLCNIC_PORT_MODE_AUTO_NEG_XG) {
 277                         data = QLCNIC_PORT_MODE_AUTO_NEG_XG;
 278                         QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
 279                 } else {
 280                         data = QLCNIC_PORT_MODE_AUTO_NEG;
 281                         QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
 282                 }
 283
 284                 if ((wol_port_mode != QLCNIC_PORT_MODE_802_3_AP) &&
 285                         (wol_port_mode != QLCNIC_PORT_MODE_XG) &&
 286                         (wol_port_mode != QLCNIC_PORT_MODE_AUTO_NEG_1G) &&
 287                         (wol_port_mode != QLCNIC_PORT_MODE_AUTO_NEG_XG)) {
 288                         wol_port_mode = QLCNIC_PORT_MODE_AUTO_NEG;
 289                 }
 290                 QLCWR32(adapter, QLCNIC_WOL_PORT_MODE, wol_port_mode);
 291         }
 292 }
 293
 294 static void qlcnic_set_msix_bit(struct pci_dev *pdev, int enable)
 295 {
 296         u32 control;
 297         int pos;
 298
 299         pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
 300         if (pos) {
 301                 pci_read_config_dword(pdev, pos, &control);
 302                 if (enable)
 303                         control |= PCI_MSIX_FLAGS_ENABLE;
 304                 else
 305                         control = 0;
 306                 pci_write_config_dword(pdev, pos, control);
 307         }
 308 }
 309
 310 static void qlcnic_init_msix_entries(struct qlcnic_adapter *adapter, int count)
 311 {
 312         int i;
 313
 314         for (i = 0; i < count; i++)
 315                 adapter->msix_entries[i].entry = i;
 316 }
 317
 318 static int
 319 qlcnic_read_mac_addr(struct qlcnic_adapter *adapter)
 320 {
 321         u8 mac_addr[ETH_ALEN];
 322         struct net_device *netdev = adapter->netdev;
 323         struct pci_dev *pdev = adapter->pdev;
 324
 325         if (adapter->nic_ops->get_mac_addr(adapter, mac_addr) != 0)
 326                 return -EIO;
 327
 328         memcpy(netdev->dev_addr, mac_addr, ETH_ALEN);
 329         memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
 330         memcpy(adapter->mac_addr, netdev->dev_addr, netdev->addr_len);
 331
 332         /* set station address */
 333
 334         if (!is_valid_ether_addr(netdev->perm_addr))
 335                 dev_warn(&pdev->dev, "Bad MAC address %pM.\n",
 336                                         netdev->dev_addr);
 337
 338         return 0;
 339 }
 340
 341 static int qlcnic_set_mac(struct net_device *netdev, void *p)
 342 {
 343         struct qlcnic_adapter *adapter = netdev_priv(netdev);
 344         struct sockaddr *addr = p;
 345
 346         if (!is_valid_ether_addr(addr->sa_data))
 347                 return -EINVAL;
 348
 349         if (netif_running(netdev)) {
 350                 netif_device_detach(netdev);
 351                 qlcnic_napi_disable(adapter);
 352         }
 353
 354         memcpy(adapter->mac_addr, addr->sa_data, netdev->addr_len);
 355         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
 356         qlcnic_set_multi(adapter->netdev);
 357
 358         if (netif_running(netdev)) {
 359                 netif_device_attach(netdev);
 360                 qlcnic_napi_enable(adapter);
 361         }
 362         return 0;
 363 }
 364
 365 static const struct net_device_ops qlcnic_netdev_ops = {
 366         .ndo_open          = qlcnic_open,
 367         .ndo_stop          = qlcnic_close,
 368         .ndo_start_xmit    = qlcnic_xmit_frame,
 369         .ndo_get_stats     = qlcnic_get_stats,
 370         .ndo_validate_addr = eth_validate_addr,
 371         .ndo_set_multicast_list = qlcnic_set_multi,
 372         .ndo_set_mac_address    = qlcnic_set_mac,
 373         .ndo_change_mtu    = qlcnic_change_mtu,
 374         .ndo_tx_timeout    = qlcnic_tx_timeout,
 375 #ifdef CONFIG_NET_POLL_CONTROLLER
 376         .ndo_poll_controller = qlcnic_poll_controller,
 377 #endif
 378 };
 379
 380 static struct qlcnic_nic_template qlcnic_ops = {
 381         .get_mac_addr = qlcnic_get_mac_addr,
 382         .config_bridged_mode = qlcnic_config_bridged_mode,
 383         .config_led = qlcnic_config_led,
 384         .set_ilb_mode = qlcnic_set_ilb_mode,
 385         .clear_ilb_mode = qlcnic_clear_ilb_mode,
 386         .start_firmware = qlcnic_start_firmware
 387 };
 388
 389 static struct qlcnic_nic_template qlcnic_pf_ops = {
 390         .get_mac_addr = qlcnic_get_mac_address,
 391         .config_bridged_mode = qlcnic_config_bridged_mode,
 392         .config_led = qlcnic_config_led,
 393         .set_ilb_mode = qlcnic_set_ilb_mode,
 394         .clear_ilb_mode = qlcnic_clear_ilb_mode,
 395         .start_firmware = qlcnic_start_firmware
 396 };
 397
 398 static struct qlcnic_nic_template qlcnic_vf_ops = {
 399         .get_mac_addr = qlcnic_get_mac_address,
 400         .config_bridged_mode = qlcnicvf_config_bridged_mode,
 401         .config_led = qlcnicvf_config_led,
 402         .set_ilb_mode = qlcnicvf_set_ilb_mode,
 403         .clear_ilb_mode = qlcnicvf_clear_ilb_mode,
 404         .start_firmware = qlcnicvf_start_firmware
 405 };
 406
 407 static void
 408 qlcnic_setup_intr(struct qlcnic_adapter *adapter)
 409 {
 410         const struct qlcnic_legacy_intr_set *legacy_intrp;
 411         struct pci_dev *pdev = adapter->pdev;
 412         int err, num_msix;
 413
 414         if (adapter->rss_supported) {
 415                 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
 416                         MSIX_ENTRIES_PER_ADAPTER : 2;
 417         } else
 418                 num_msix = 1;
 419
 420         adapter->max_sds_rings = 1;
 421
 422         adapter->flags &= ~(QLCNIC_MSI_ENABLED | QLCNIC_MSIX_ENABLED);
 423
 424         legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
 425
 426         adapter->int_vec_bit = legacy_intrp->int_vec_bit;
 427         adapter->tgt_status_reg = qlcnic_get_ioaddr(adapter,
 428                         legacy_intrp->tgt_status_reg);
 429         adapter->tgt_mask_reg = qlcnic_get_ioaddr(adapter,
 430                         legacy_intrp->tgt_mask_reg);
 431         adapter->isr_int_vec = qlcnic_get_ioaddr(adapter, ISR_INT_VECTOR);
 432
 433         adapter->crb_int_state_reg = qlcnic_get_ioaddr(adapter,
 434                         ISR_INT_STATE_REG);
 435
 436         qlcnic_set_msix_bit(pdev, 0);
 437
 438         if (adapter->msix_supported) {
 439
 440                 qlcnic_init_msix_entries(adapter, num_msix);
 441                 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
 442                 if (err == 0) {
 443                         adapter->flags |= QLCNIC_MSIX_ENABLED;
 444                         qlcnic_set_msix_bit(pdev, 1);
 445
 446                         if (adapter->rss_supported)
 447                                 adapter->max_sds_rings = num_msix;
 448
 449                         dev_info(&pdev->dev, "using msi-x interrupts\n");
 450                         return;
 451                 }
 452
 453                 if (err > 0)
 454                         pci_disable_msix(pdev);
 455
 456                 /* fall through for msi */
 457         }
 458
 459         if (use_msi && !pci_enable_msi(pdev)) {
 460                 adapter->flags |= QLCNIC_MSI_ENABLED;
 461                 adapter->tgt_status_reg = qlcnic_get_ioaddr(adapter,
 462                                 msi_tgt_status[adapter->ahw.pci_func]);
 463                 dev_info(&pdev->dev, "using msi interrupts\n");
 464                 adapter->msix_entries[0].vector = pdev->irq;
 465                 return;
 466         }
 467
 468         dev_info(&pdev->dev, "using legacy interrupts\n");
 469         adapter->msix_entries[0].vector = pdev->irq;
 470 }
 471
 472 static void
 473 qlcnic_teardown_intr(struct qlcnic_adapter *adapter)
 474 {
 475         if (adapter->flags & QLCNIC_MSIX_ENABLED)
 476                 pci_disable_msix(adapter->pdev);
 477         if (adapter->flags & QLCNIC_MSI_ENABLED)
 478                 pci_disable_msi(adapter->pdev);
 479 }
 480
 481 static void
 482 qlcnic_cleanup_pci_map(struct qlcnic_adapter *adapter)
 483 {
 484         if (adapter->ahw.pci_base0 != NULL)
 485                 iounmap(adapter->ahw.pci_base0);
 486 }
 487
 488 static int
 489 qlcnic_set_function_modes(struct qlcnic_adapter *adapter)
 490 {
 491         u8 id;
 492         u32 ref_count;
 493         int i, ret = 1;
 494         u32 data = QLCNIC_MGMT_FUNC;
 495         void __iomem *priv_op = adapter->ahw.pci_base0 + QLCNIC_DRV_OP_MODE;
 496
 497         /* If other drivers are not in use set their privilege level */
 498         ref_count = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
 499         ret = qlcnic_api_lock(adapter);
 500         if (ret)
 501                 goto err_lock;
 502         if (QLC_DEV_CLR_REF_CNT(ref_count, adapter->ahw.pci_func))
 503                 goto err_npar;
 504
 505         if (qlcnic_config_npars) {
 506                 for (i = 0; i < QLCNIC_MAX_PCI_FUNC; i++) {
 507                         id = adapter->npars[i].id;
 508                         if (adapter->npars[i].type != QLCNIC_TYPE_NIC ||
 509                                 id == adapter->ahw.pci_func)
 510                                 continue;
 511                         data |= (qlcnic_config_npars &
 512                                         QLC_DEV_SET_DRV(0xf, id));
 513                 }
 514         } else {
 515                 data = readl(priv_op);
 516                 data = (data & ~QLC_DEV_SET_DRV(0xf, adapter->ahw.pci_func)) |
 517                         (QLC_DEV_SET_DRV(QLCNIC_MGMT_FUNC,
 518                         adapter->ahw.pci_func));
 519         }
 520         writel(data, priv_op);
 521 err_npar:
 522         qlcnic_api_unlock(adapter);
 523 err_lock:
 524         return ret;
 525 }
 526
 527 static u32
 528 qlcnic_get_driver_mode(struct qlcnic_adapter *adapter)
 529 {
 530         void __iomem *msix_base_addr;
 531         void __iomem *priv_op;
 532         u32 func;
 533         u32 msix_base;
 534         u32 op_mode, priv_level;
 535
 536         /* Determine FW API version */
 537         adapter->fw_hal_version = readl(adapter->ahw.pci_base0 + QLCNIC_FW_API);
 538         if (adapter->fw_hal_version == ~0) {
 539                 adapter->nic_ops = &qlcnic_ops;
 540                 adapter->fw_hal_version = QLCNIC_FW_BASE;
 541                 adapter->ahw.pci_func = PCI_FUNC(adapter->pdev->devfn);
 542                 adapter->capabilities = QLCRD32(adapter, CRB_FW_CAPABILITIES_1);
 543                 dev_info(&adapter->pdev->dev,
 544                         "FW does not support nic partion\n");
 545                 return adapter->fw_hal_version;
 546         }
 547
 548         /* Find PCI function number */
 549         pci_read_config_dword(adapter->pdev, QLCNIC_MSIX_TABLE_OFFSET, &func);
 550         msix_base_addr = adapter->ahw.pci_base0 + QLCNIC_MSIX_BASE;
 551         msix_base = readl(msix_base_addr);
 552         func = (func - msix_base)/QLCNIC_MSIX_TBL_PGSIZE;
 553         adapter->ahw.pci_func = func;
 554
 555         qlcnic_get_nic_info(adapter, adapter->ahw.pci_func);
 556
 557         if (!(adapter->flags & QLCNIC_ESWITCH_ENABLED)) {
 558                 adapter->nic_ops = &qlcnic_ops;
 559                 return adapter->fw_hal_version;
 560         }
 561
 562         /* Determine function privilege level */
 563         priv_op = adapter->ahw.pci_base0 + QLCNIC_DRV_OP_MODE;
 564         op_mode = readl(priv_op);
 565         if (op_mode == QLC_DEV_DRV_DEFAULT)
 566                 priv_level = QLCNIC_MGMT_FUNC;
 567         else
 568                 priv_level = QLC_DEV_GET_DRV(op_mode, adapter->ahw.pci_func);
 569
 570         switch (priv_level) {
 571         case QLCNIC_MGMT_FUNC:
 572                 adapter->op_mode = QLCNIC_MGMT_FUNC;
 573                 adapter->nic_ops = &qlcnic_pf_ops;
 574                 qlcnic_get_pci_info(adapter);
 575                 /* Set privilege level for other functions */
 576                 qlcnic_set_function_modes(adapter);
 577                 dev_info(&adapter->pdev->dev,
 578                         "HAL Version: %d, Management function\n",
 579                         adapter->fw_hal_version);
 580                 break;
 581         case QLCNIC_PRIV_FUNC:
 582                 adapter->op_mode = QLCNIC_PRIV_FUNC;
 583                 dev_info(&adapter->pdev->dev,
 584                         "HAL Version: %d, Privileged function\n",
 585                         adapter->fw_hal_version);
 586                 adapter->nic_ops = &qlcnic_pf_ops;
 587                 break;
 588         case QLCNIC_NON_PRIV_FUNC:
 589                 adapter->op_mode = QLCNIC_NON_PRIV_FUNC;
 590                 dev_info(&adapter->pdev->dev,
 591                         "HAL Version: %d Non Privileged function\n",
 592                         adapter->fw_hal_version);
 593                 adapter->nic_ops = &qlcnic_vf_ops;
 594                 break;
 595         default:
 596                 dev_info(&adapter->pdev->dev, "Unknown function mode: %d\n",
 597                         priv_level);
 598                 return 0;
 599         }
 600         return adapter->fw_hal_version;
 601 }
 602
 603 static int
 604 qlcnic_setup_pci_map(struct qlcnic_adapter *adapter)
 605 {
 606         void __iomem *mem_ptr0 = NULL;
 607         resource_size_t mem_base;
 608         unsigned long mem_len, pci_len0 = 0;
 609
 610         struct pci_dev *pdev = adapter->pdev;
 611
 612         /* remap phys address */
 613         mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
 614         mem_len = pci_resource_len(pdev, 0);
 615
 616         if (mem_len == QLCNIC_PCI_2MB_SIZE) {
 617
 618                 mem_ptr0 = pci_ioremap_bar(pdev, 0);
 619                 if (mem_ptr0 == NULL) {
 620                         dev_err(&pdev->dev, "failed to map PCI bar 0\n");
 621                         return -EIO;
 622                 }
 623                 pci_len0 = mem_len;
 624         } else {
 625                 return -EIO;
 626         }
 627
 628         dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
 629
 630         adapter->ahw.pci_base0 = mem_ptr0;
 631         adapter->ahw.pci_len0 = pci_len0;
 632
 633         if (!qlcnic_get_driver_mode(adapter)) {
 634                 iounmap(adapter->ahw.pci_base0);
 635                 return -EIO;
 636         }
 637
 638         adapter->ahw.ocm_win_crb = qlcnic_get_ioaddr(adapter,
 639                 QLCNIC_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(adapter->ahw.pci_func)));
 640
 641         return 0;
 642 }
 643
 644 static void get_brd_name(struct qlcnic_adapter *adapter, char *name)
 645 {
 646         struct pci_dev *pdev = adapter->pdev;
 647         int i, found = 0;
 648
 649         for (i = 0; i < NUM_SUPPORTED_BOARDS; ++i) {
 650                 if (qlcnic_boards[i].vendor == pdev->vendor &&
 651                         qlcnic_boards[i].device == pdev->device &&
 652                         qlcnic_boards[i].sub_vendor == pdev->subsystem_vendor &&
 653                         qlcnic_boards[i].sub_device == pdev->subsystem_device) {
 654                                 sprintf(name, "%pM: %s" ,
 655                                         adapter->mac_addr,
 656                                         qlcnic_boards[i].short_name);
 657                                 found = 1;
 658                                 break;
 659                 }
 660
 661         }
 662
 663         if (!found)
 664                 sprintf(name, "%pM Gigabit Ethernet", adapter->mac_addr);
 665 }
 666
 667 static void
 668 qlcnic_check_options(struct qlcnic_adapter *adapter)
 669 {
 670         u32 fw_major, fw_minor, fw_build;
 671         char brd_name[QLCNIC_MAX_BOARD_NAME_LEN];
 672         char serial_num[32];
 673         int i, offset, val;
 674         int *ptr32;
 675         struct pci_dev *pdev = adapter->pdev;
 676
 677         adapter->driver_mismatch = 0;
 678
 679         ptr32 = (int *)&serial_num;
 680         offset = QLCNIC_FW_SERIAL_NUM_OFFSET;
 681         for (i = 0; i < 8; i++) {
 682                 if (qlcnic_rom_fast_read(adapter, offset, &val) == -1) {
 683                         dev_err(&pdev->dev, "error reading board info\n");
 684                         adapter->driver_mismatch = 1;
 685                         return;
 686                 }
 687                 ptr32[i] = cpu_to_le32(val);
 688                 offset += sizeof(u32);
 689         }
 690
 691         fw_major = QLCRD32(adapter, QLCNIC_FW_VERSION_MAJOR);
 692         fw_minor = QLCRD32(adapter, QLCNIC_FW_VERSION_MINOR);
 693         fw_build = QLCRD32(adapter, QLCNIC_FW_VERSION_SUB);
 694
 695         adapter->fw_version = QLCNIC_VERSION_CODE(fw_major, fw_minor, fw_build);
 696
 697         if (adapter->portnum == 0) {
 698                 get_brd_name(adapter, brd_name);
 699
 700                 pr_info("%s: %s Board Chip rev 0x%x\n",
 701                                 module_name(THIS_MODULE),
 702                                 brd_name, adapter->ahw.revision_id);
 703         }
 704
 705         dev_info(&pdev->dev, "firmware v%d.%d.%d\n",
 706                         fw_major, fw_minor, fw_build);
 707
 708         adapter->flags &= ~QLCNIC_LRO_ENABLED;
 709
 710         if (adapter->ahw.port_type == QLCNIC_XGBE) {
 711                 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
 712                 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
 713         } else if (adapter->ahw.port_type == QLCNIC_GBE) {
 714                 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
 715                 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
 716         }
 717
 718         qlcnic_get_nic_info(adapter, adapter->ahw.pci_func);
 719
 720         adapter->msix_supported = !!use_msi_x;
 721         adapter->rss_supported = !!use_msi_x;
 722
 723         adapter->num_txd = MAX_CMD_DESCRIPTORS;
 724
 725         adapter->max_rds_rings = 2;
 726 }
 727
 728 static int
 729 qlcnic_start_firmware(struct qlcnic_adapter *adapter)
 730 {
 731         int val, err, first_boot;
 732
 733         err = qlcnic_can_start_firmware(adapter);
 734         if (err < 0)
 735                 return err;
 736         else if (!err)
 737                 goto wait_init;
 738
 739         first_boot = QLCRD32(adapter, QLCNIC_CAM_RAM(0x1fc));
 740         if (first_boot == 0x55555555)
 741                 /* This is the first boot after power up */
 742                 QLCWR32(adapter, QLCNIC_CAM_RAM(0x1fc), QLCNIC_BDINFO_MAGIC);
 743
 744         if (load_fw_file)
 745                 qlcnic_request_firmware(adapter);
 746         else
 747                 adapter->fw_type = QLCNIC_FLASH_ROMIMAGE;
 748
 749         err = qlcnic_need_fw_reset(adapter);
 750         if (err < 0)
 751                 goto err_out;
 752         if (err == 0)
 753                 goto wait_init;
 754
 755         if (first_boot != 0x55555555) {
 756                 QLCWR32(adapter, CRB_CMDPEG_STATE, 0);
 757                 qlcnic_pinit_from_rom(adapter);
 758                 msleep(1);
 759         }
 760
 761         QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS1, 0);
 762         QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS2, 0);
 763
 764         qlcnic_set_port_mode(adapter);
 765
 766         err = qlcnic_load_firmware(adapter);
 767         if (err)
 768                 goto err_out;
 769
 770         qlcnic_release_firmware(adapter);
 771
 772         val = (_QLCNIC_LINUX_MAJOR << 16)
 773                 | ((_QLCNIC_LINUX_MINOR << 8))
 774                 | (_QLCNIC_LINUX_SUBVERSION);
 775         QLCWR32(adapter, CRB_DRIVER_VERSION, val);
 776
 777 wait_init:
 778         /* Handshake with the card before we register the devices. */
 779         err = qlcnic_phantom_init(adapter);
 780         if (err)
 781                 goto err_out;
 782
 783         QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_READY);
 784         qlcnic_idc_debug_info(adapter, 1);
 785
 786         qlcnic_check_options(adapter);
 787
 788         if (adapter->flags & QLCNIC_ESWITCH_ENABLED &&
 789                 adapter->op_mode != QLCNIC_NON_PRIV_FUNC)
 790                 qlcnic_dev_set_npar_ready(adapter);
 791
 792         adapter->need_fw_reset = 0;
 793
 794         qlcnic_release_firmware(adapter);
 795         return 0;
 796
 797 err_out:
 798         QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_FAILED);
 799         dev_err(&adapter->pdev->dev, "Device state set to failed\n");
 800         qlcnic_release_firmware(adapter);
 801         return err;
 802 }
 803
 804 static int
 805 qlcnic_request_irq(struct qlcnic_adapter *adapter)
 806 {
 807         irq_handler_t handler;
 808         struct qlcnic_host_sds_ring *sds_ring;
 809         int err, ring;
 810
 811         unsigned long flags = 0;
 812         struct net_device *netdev = adapter->netdev;
 813         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 814
 815         if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
 816                 handler = qlcnic_tmp_intr;
 817                 if (!QLCNIC_IS_MSI_FAMILY(adapter))
 818                         flags |= IRQF_SHARED;
 819
 820         } else {
 821                 if (adapter->flags & QLCNIC_MSIX_ENABLED)
 822                         handler = qlcnic_msix_intr;
 823                 else if (adapter->flags & QLCNIC_MSI_ENABLED)
 824                         handler = qlcnic_msi_intr;
 825                 else {
 826                         flags |= IRQF_SHARED;
 827                         handler = qlcnic_intr;
 828                 }
 829         }
 830         adapter->irq = netdev->irq;
 831
 832         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 833                 sds_ring = &recv_ctx->sds_rings[ring];
 834                 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
 835                 err = request_irq(sds_ring->irq, handler,
 836                                   flags, sds_ring->name, sds_ring);
 837                 if (err)
 838                         return err;
 839         }
 840
 841         return 0;
 842 }
 843
 844 static void
 845 qlcnic_free_irq(struct qlcnic_adapter *adapter)
 846 {
 847         int ring;
 848         struct qlcnic_host_sds_ring *sds_ring;
 849
 850         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 851
 852         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 853                 sds_ring = &recv_ctx->sds_rings[ring];
 854                 free_irq(sds_ring->irq, sds_ring);
 855         }
 856 }
 857
 858 static void
 859 qlcnic_init_coalesce_defaults(struct qlcnic_adapter *adapter)
 860 {
 861         adapter->coal.flags = QLCNIC_INTR_DEFAULT;
 862         adapter->coal.normal.data.rx_time_us =
 863                 QLCNIC_DEFAULT_INTR_COALESCE_RX_TIME_US;
 864         adapter->coal.normal.data.rx_packets =
 865                 QLCNIC_DEFAULT_INTR_COALESCE_RX_PACKETS;
 866         adapter->coal.normal.data.tx_time_us =
 867                 QLCNIC_DEFAULT_INTR_COALESCE_TX_TIME_US;
 868         adapter->coal.normal.data.tx_packets =
 869                 QLCNIC_DEFAULT_INTR_COALESCE_TX_PACKETS;
 870 }
 871
 872 static int
 873 __qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
 874 {
 875         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
 876                 return -EIO;
 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         set_bit(__QLCNIC_DEV_UP, &adapter->state);
 896         return 0;
 897 }
 898
 899 /* Usage: During resume and firmware recovery module.*/
 900
 901 static int
 902 qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
 903 {
 904         int err = 0;
 905
 906         rtnl_lock();
 907         if (netif_running(netdev))
 908                 err = __qlcnic_up(adapter, netdev);
 909         rtnl_unlock();
 910
 911         return err;
 912 }
 913
 914 static void
 915 __qlcnic_down(struct qlcnic_adapter *adapter, struct net_device *netdev)
 916 {
 917         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
 918                 return;
 919
 920         if (!test_and_clear_bit(__QLCNIC_DEV_UP, &adapter->state))
 921                 return;
 922
 923         smp_mb();
 924         spin_lock(&adapter->tx_clean_lock);
 925         netif_carrier_off(netdev);
 926         netif_tx_disable(netdev);
 927
 928         qlcnic_free_mac_list(adapter);
 929
 930         qlcnic_nic_set_promisc(adapter, QLCNIC_NIU_NON_PROMISC_MODE);
 931
 932         qlcnic_napi_disable(adapter);
 933
 934         qlcnic_release_tx_buffers(adapter);
 935         spin_unlock(&adapter->tx_clean_lock);
 936 }
 937
 938 /* Usage: During suspend and firmware recovery module */
 939
 940 static void
 941 qlcnic_down(struct qlcnic_adapter *adapter, struct net_device *netdev)
 942 {
 943         rtnl_lock();
 944         if (netif_running(netdev))
 945                 __qlcnic_down(adapter, netdev);
 946         rtnl_unlock();
 947
 948 }
 949
 950 static int
 951 qlcnic_attach(struct qlcnic_adapter *adapter)
 952 {
 953         struct net_device *netdev = adapter->netdev;
 954         struct pci_dev *pdev = adapter->pdev;
 955         int err, ring;
 956         struct qlcnic_host_rds_ring *rds_ring;
 957
 958         if (adapter->is_up == QLCNIC_ADAPTER_UP_MAGIC)
 959                 return 0;
 960
 961         err = qlcnic_init_firmware(adapter);
 962         if (err)
 963                 return err;
 964
 965         err = qlcnic_napi_add(adapter, netdev);
 966         if (err)
 967                 return err;
 968
 969         err = qlcnic_alloc_sw_resources(adapter);
 970         if (err) {
 971                 dev_err(&pdev->dev, "Error in setting sw resources\n");
 972                 return err;
 973         }
 974
 975         err = qlcnic_alloc_hw_resources(adapter);
 976         if (err) {
 977                 dev_err(&pdev->dev, "Error in setting hw resources\n");
 978                 goto err_out_free_sw;
 979         }
 980
 981
 982         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 983                 rds_ring = &adapter->recv_ctx.rds_rings[ring];
 984                 qlcnic_post_rx_buffers(adapter, ring, rds_ring);
 985         }
 986
 987         err = qlcnic_request_irq(adapter);
 988         if (err) {
 989                 dev_err(&pdev->dev, "failed to setup interrupt\n");
 990                 goto err_out_free_rxbuf;
 991         }
 992
 993         qlcnic_init_coalesce_defaults(adapter);
 994
 995         qlcnic_create_sysfs_entries(adapter);
 996
 997         adapter->is_up = QLCNIC_ADAPTER_UP_MAGIC;
 998         return 0;
 999
1000 err_out_free_rxbuf:
1001         qlcnic_release_rx_buffers(adapter);
1002         qlcnic_free_hw_resources(adapter);
1003 err_out_free_sw:
1004         qlcnic_free_sw_resources(adapter);
1005         return err;
1006 }
1007
1008 static void
1009 qlcnic_detach(struct qlcnic_adapter *adapter)
1010 {
1011         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
1012                 return;
1013
1014         qlcnic_remove_sysfs_entries(adapter);
1015
1016         qlcnic_free_hw_resources(adapter);
1017         qlcnic_release_rx_buffers(adapter);
1018         qlcnic_free_irq(adapter);
1019         qlcnic_napi_del(adapter);
1020         qlcnic_free_sw_resources(adapter);
1021
1022         adapter->is_up = 0;
1023 }
1024
1025 void qlcnic_diag_free_res(struct net_device *netdev, int max_sds_rings)
1026 {
1027         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1028         struct qlcnic_host_sds_ring *sds_ring;
1029         int ring;
1030
1031         clear_bit(__QLCNIC_DEV_UP, &adapter->state);
1032         if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
1033                 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1034                         sds_ring = &adapter->recv_ctx.sds_rings[ring];
1035                         qlcnic_disable_int(sds_ring);
1036                 }
1037         }
1038
1039         qlcnic_detach(adapter);
1040
1041         adapter->diag_test = 0;
1042         adapter->max_sds_rings = max_sds_rings;
1043
1044         if (qlcnic_attach(adapter))
1045                 goto out;
1046
1047         if (netif_running(netdev))
1048                 __qlcnic_up(adapter, netdev);
1049 out:
1050         netif_device_attach(netdev);
1051 }
1052
1053 int qlcnic_diag_alloc_res(struct net_device *netdev, int test)
1054 {
1055         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1056         struct qlcnic_host_sds_ring *sds_ring;
1057         int ring;
1058         int ret;
1059
1060         netif_device_detach(netdev);
1061
1062         if (netif_running(netdev))
1063                 __qlcnic_down(adapter, netdev);
1064
1065         qlcnic_detach(adapter);
1066
1067         adapter->max_sds_rings = 1;
1068         adapter->diag_test = test;
1069
1070         ret = qlcnic_attach(adapter);
1071         if (ret) {
1072                 netif_device_attach(netdev);
1073                 return ret;
1074         }
1075
1076         if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
1077                 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1078                         sds_ring = &adapter->recv_ctx.sds_rings[ring];
1079                         qlcnic_enable_int(sds_ring);
1080                 }
1081         }
1082         set_bit(__QLCNIC_DEV_UP, &adapter->state);
1083
1084         return 0;
1085 }
1086
1087 int
1088 qlcnic_reset_context(struct qlcnic_adapter *adapter)
1089 {
1090         int err = 0;
1091         struct net_device *netdev = adapter->netdev;
1092
1093         if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
1094                 return -EBUSY;
1095
1096         if (adapter->is_up == QLCNIC_ADAPTER_UP_MAGIC) {
1097
1098                 netif_device_detach(netdev);
1099
1100                 if (netif_running(netdev))
1101                         __qlcnic_down(adapter, netdev);
1102
1103                 qlcnic_detach(adapter);
1104
1105                 if (netif_running(netdev)) {
1106                         err = qlcnic_attach(adapter);
1107                         if (!err)
1108                                 __qlcnic_up(adapter, netdev);
1109                 }
1110
1111                 netif_device_attach(netdev);
1112         }
1113
1114         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1115         return err;
1116 }
1117
1118 static int
1119 qlcnic_setup_netdev(struct qlcnic_adapter *adapter,
1120                 struct net_device *netdev, u8 pci_using_dac)
1121 {
1122         int err;
1123         struct pci_dev *pdev = adapter->pdev;
1124
1125         adapter->rx_csum = 1;
1126         adapter->mc_enabled = 0;
1127         adapter->max_mc_count = 38;
1128
1129         netdev->netdev_ops         = &qlcnic_netdev_ops;
1130         netdev->watchdog_timeo     = 2*HZ;
1131
1132         qlcnic_change_mtu(netdev, netdev->mtu);
1133
1134         SET_ETHTOOL_OPS(netdev, &qlcnic_ethtool_ops);
1135
1136         netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM |
1137                 NETIF_F_IPV6_CSUM | NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6);
1138
1139         netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM |
1140                 NETIF_F_IPV6_CSUM | NETIF_F_TSO | NETIF_F_TSO6);
1141
1142         if (pci_using_dac) {
1143                 netdev->features |= NETIF_F_HIGHDMA;
1144                 netdev->vlan_features |= NETIF_F_HIGHDMA;
1145         }
1146
1147         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_FVLANTX)
1148                 netdev->features |= (NETIF_F_HW_VLAN_TX);
1149
1150         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
1151                 netdev->features |= NETIF_F_LRO;
1152
1153         netdev->irq = adapter->msix_entries[0].vector;
1154
1155         INIT_WORK(&adapter->tx_timeout_task, qlcnic_tx_timeout_task);
1156
1157         if (qlcnic_read_mac_addr(adapter))
1158                 dev_warn(&pdev->dev, "failed to read mac addr\n");
1159
1160         netif_carrier_off(netdev);
1161         netif_stop_queue(netdev);
1162
1163         err = register_netdev(netdev);
1164         if (err) {
1165                 dev_err(&pdev->dev, "failed to register net device\n");
1166                 return err;
1167         }
1168
1169         return 0;
1170 }
1171
1172 static int qlcnic_set_dma_mask(struct pci_dev *pdev, u8 *pci_using_dac)
1173 {
1174         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) &&
1175                         !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
1176                 *pci_using_dac = 1;
1177         else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) &&
1178                         !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
1179                 *pci_using_dac = 0;
1180         else {
1181                 dev_err(&pdev->dev, "Unable to set DMA mask, aborting\n");
1182                 return -EIO;
1183         }
1184
1185         return 0;
1186 }
1187
1188 static int __devinit
1189 qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1190 {
1191         struct net_device *netdev = NULL;
1192         struct qlcnic_adapter *adapter = NULL;
1193         int err;
1194         uint8_t revision_id;
1195         uint8_t pci_using_dac;
1196
1197         err = pci_enable_device(pdev);
1198         if (err)
1199                 return err;
1200
1201         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1202                 err = -ENODEV;
1203                 goto err_out_disable_pdev;
1204         }
1205
1206         err = qlcnic_set_dma_mask(pdev, &pci_using_dac);
1207         if (err)
1208                 goto err_out_disable_pdev;
1209
1210         err = pci_request_regions(pdev, qlcnic_driver_name);
1211         if (err)
1212                 goto err_out_disable_pdev;
1213
1214         pci_set_master(pdev);
1215
1216         netdev = alloc_etherdev(sizeof(struct qlcnic_adapter));
1217         if (!netdev) {
1218                 dev_err(&pdev->dev, "failed to allocate net_device\n");
1219                 err = -ENOMEM;
1220                 goto err_out_free_res;
1221         }
1222
1223         SET_NETDEV_DEV(netdev, &pdev->dev);
1224
1225         adapter = netdev_priv(netdev);
1226         adapter->netdev  = netdev;
1227         adapter->pdev    = pdev;
1228         adapter->dev_rst_time = jiffies;
1229
1230         revision_id = pdev->revision;
1231         adapter->ahw.revision_id = revision_id;
1232
1233         rwlock_init(&adapter->ahw.crb_lock);
1234         mutex_init(&adapter->ahw.mem_lock);
1235
1236         spin_lock_init(&adapter->tx_clean_lock);
1237         INIT_LIST_HEAD(&adapter->mac_list);
1238
1239         err = qlcnic_setup_pci_map(adapter);
1240         if (err)
1241                 goto err_out_free_netdev;
1242
1243         /* This will be reset for mezz cards  */
1244         adapter->portnum = adapter->ahw.pci_func;
1245
1246         err = qlcnic_get_board_info(adapter);
1247         if (err) {
1248                 dev_err(&pdev->dev, "Error getting board config info.\n");
1249                 goto err_out_iounmap;
1250         }
1251
1252         if (qlcnic_read_mac_addr(adapter))
1253                 dev_warn(&pdev->dev, "failed to read mac addr\n");
1254
1255         if (qlcnic_setup_idc_param(adapter))
1256                 goto err_out_iounmap;
1257
1258         err = adapter->nic_ops->start_firmware(adapter);
1259         if (err) {
1260                 dev_err(&pdev->dev, "Loading fw failed.Please Reboot\n");
1261                 goto err_out_decr_ref;
1262         }
1263
1264         qlcnic_clear_stats(adapter);
1265
1266         qlcnic_setup_intr(adapter);
1267
1268         err = qlcnic_setup_netdev(adapter, netdev, pci_using_dac);
1269         if (err)
1270                 goto err_out_disable_msi;
1271
1272         pci_set_drvdata(pdev, adapter);
1273
1274         qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
1275
1276         switch (adapter->ahw.port_type) {
1277         case QLCNIC_GBE:
1278                 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1279                                 adapter->netdev->name);
1280                 break;
1281         case QLCNIC_XGBE:
1282                 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1283                                 adapter->netdev->name);
1284                 break;
1285         }
1286
1287         qlcnic_create_diag_entries(adapter);
1288
1289         return 0;
1290
1291 err_out_disable_msi:
1292         qlcnic_teardown_intr(adapter);
1293
1294 err_out_decr_ref:
1295         qlcnic_clr_all_drv_state(adapter);
1296
1297 err_out_iounmap:
1298         qlcnic_cleanup_pci_map(adapter);
1299
1300 err_out_free_netdev:
1301         free_netdev(netdev);
1302
1303 err_out_free_res:
1304         pci_release_regions(pdev);
1305
1306 err_out_disable_pdev:
1307         pci_set_drvdata(pdev, NULL);
1308         pci_disable_device(pdev);
1309         return err;
1310 }
1311
1312 static void __devexit qlcnic_remove(struct pci_dev *pdev)
1313 {
1314         struct qlcnic_adapter *adapter;
1315         struct net_device *netdev;
1316
1317         adapter = pci_get_drvdata(pdev);
1318         if (adapter == NULL)
1319                 return;
1320
1321         netdev = adapter->netdev;
1322
1323         qlcnic_cancel_fw_work(adapter);
1324
1325         unregister_netdev(netdev);
1326
1327         cancel_work_sync(&adapter->tx_timeout_task);
1328
1329         qlcnic_detach(adapter);
1330
1331         if (adapter->npars != NULL)
1332                 kfree(adapter->npars);
1333         if (adapter->eswitch != NULL)
1334                 kfree(adapter->eswitch);
1335
1336         qlcnic_clr_all_drv_state(adapter);
1337
1338         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1339
1340         qlcnic_teardown_intr(adapter);
1341
1342         qlcnic_remove_diag_entries(adapter);
1343
1344         qlcnic_cleanup_pci_map(adapter);
1345
1346         qlcnic_release_firmware(adapter);
1347
1348         pci_release_regions(pdev);
1349         pci_disable_device(pdev);
1350         pci_set_drvdata(pdev, NULL);
1351
1352         free_netdev(netdev);
1353 }
1354 static int __qlcnic_shutdown(struct pci_dev *pdev)
1355 {
1356         struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
1357         struct net_device *netdev = adapter->netdev;
1358         int retval;
1359
1360         netif_device_detach(netdev);
1361
1362         qlcnic_cancel_fw_work(adapter);
1363
1364         if (netif_running(netdev))
1365                 qlcnic_down(adapter, netdev);
1366
1367         cancel_work_sync(&adapter->tx_timeout_task);
1368
1369         qlcnic_detach(adapter);
1370
1371         qlcnic_clr_all_drv_state(adapter);
1372
1373         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1374
1375         retval = pci_save_state(pdev);
1376         if (retval)
1377                 return retval;
1378
1379         if (qlcnic_wol_supported(adapter)) {
1380                 pci_enable_wake(pdev, PCI_D3cold, 1);
1381                 pci_enable_wake(pdev, PCI_D3hot, 1);
1382         }
1383
1384         return 0;
1385 }
1386
1387 static void qlcnic_shutdown(struct pci_dev *pdev)
1388 {
1389         if (__qlcnic_shutdown(pdev))
1390                 return;
1391
1392         pci_disable_device(pdev);
1393 }
1394
1395 #ifdef CONFIG_PM
1396 static int
1397 qlcnic_suspend(struct pci_dev *pdev, pm_message_t state)
1398 {
1399         int retval;
1400
1401         retval = __qlcnic_shutdown(pdev);
1402         if (retval)
1403                 return retval;
1404
1405         pci_set_power_state(pdev, pci_choose_state(pdev, state));
1406         return 0;
1407 }
1408
1409 static int
1410 qlcnic_resume(struct pci_dev *pdev)
1411 {
1412         struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
1413         struct net_device *netdev = adapter->netdev;
1414         int err;
1415
1416         err = pci_enable_device(pdev);
1417         if (err)
1418                 return err;
1419
1420         pci_set_power_state(pdev, PCI_D0);
1421         pci_set_master(pdev);
1422         pci_restore_state(pdev);
1423
1424         err = adapter->nic_ops->start_firmware(adapter);
1425         if (err) {
1426                 dev_err(&pdev->dev, "failed to start firmware\n");
1427                 return err;
1428         }
1429
1430         if (netif_running(netdev)) {
1431                 err = qlcnic_attach(adapter);
1432                 if (err)
1433                         goto err_out;
1434
1435                 err = qlcnic_up(adapter, netdev);
1436                 if (err)
1437                         goto err_out_detach;
1438
1439
1440                 qlcnic_config_indev_addr(netdev, NETDEV_UP);
1441         }
1442
1443         netif_device_attach(netdev);
1444         qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
1445         return 0;
1446
1447 err_out_detach:
1448         qlcnic_detach(adapter);
1449 err_out:
1450         qlcnic_clr_all_drv_state(adapter);
1451         netif_device_attach(netdev);
1452         return err;
1453 }
1454 #endif
1455
1456 static int qlcnic_open(struct net_device *netdev)
1457 {
1458         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1459         int err;
1460
1461         if (adapter->driver_mismatch)
1462                 return -EIO;
1463
1464         err = qlcnic_attach(adapter);
1465         if (err)
1466                 return err;
1467
1468         err = __qlcnic_up(adapter, netdev);
1469         if (err)
1470                 goto err_out;
1471
1472         netif_start_queue(netdev);
1473
1474         return 0;
1475
1476 err_out:
1477         qlcnic_detach(adapter);
1478         return err;
1479 }
1480
1481 /*
1482  * qlcnic_close - Disables a network interface entry point
1483  */
1484 static int qlcnic_close(struct net_device *netdev)
1485 {
1486         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1487
1488         __qlcnic_down(adapter, netdev);
1489         return 0;
1490 }
1491
1492 static void
1493 qlcnic_tso_check(struct net_device *netdev,
1494                 struct qlcnic_host_tx_ring *tx_ring,
1495                 struct cmd_desc_type0 *first_desc,
1496                 struct sk_buff *skb)
1497 {
1498         u8 opcode = TX_ETHER_PKT;
1499         __be16 protocol = skb->protocol;
1500         u16 flags = 0, vid = 0;
1501         int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1502         struct cmd_desc_type0 *hwdesc;
1503         struct vlan_ethhdr *vh;
1504         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1505         u32 producer = tx_ring->producer;
1506
1507         if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1508
1509                 vh = (struct vlan_ethhdr *)skb->data;
1510                 protocol = vh->h_vlan_encapsulated_proto;
1511                 flags = FLAGS_VLAN_TAGGED;
1512
1513         } else if (vlan_tx_tag_present(skb)) {
1514
1515                 flags = FLAGS_VLAN_OOB;
1516                 vid = vlan_tx_tag_get(skb);
1517                 qlcnic_set_tx_vlan_tci(first_desc, vid);
1518                 vlan_oob = 1;
1519         }
1520
1521         if (*(skb->data) & BIT_0) {
1522                 flags |= BIT_0;
1523                 memcpy(&first_desc->eth_addr, skb->data, ETH_ALEN);
1524         }
1525
1526         if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1527                         skb_shinfo(skb)->gso_size > 0) {
1528
1529                 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1530
1531                 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1532                 first_desc->total_hdr_length = hdr_len;
1533                 if (vlan_oob) {
1534                         first_desc->total_hdr_length += VLAN_HLEN;
1535                         first_desc->tcp_hdr_offset = VLAN_HLEN;
1536                         first_desc->ip_hdr_offset = VLAN_HLEN;
1537                         /* Only in case of TSO on vlan device */
1538                         flags |= FLAGS_VLAN_TAGGED;
1539                 }
1540
1541                 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1542                                 TX_TCP_LSO6 : TX_TCP_LSO;
1543                 tso = 1;
1544
1545         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1546                 u8 l4proto;
1547
1548                 if (protocol == cpu_to_be16(ETH_P_IP)) {
1549                         l4proto = ip_hdr(skb)->protocol;
1550
1551                         if (l4proto == IPPROTO_TCP)
1552                                 opcode = TX_TCP_PKT;
1553                         else if (l4proto == IPPROTO_UDP)
1554                                 opcode = TX_UDP_PKT;
1555                 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1556                         l4proto = ipv6_hdr(skb)->nexthdr;
1557
1558                         if (l4proto == IPPROTO_TCP)
1559                                 opcode = TX_TCPV6_PKT;
1560                         else if (l4proto == IPPROTO_UDP)
1561                                 opcode = TX_UDPV6_PKT;
1562                 }
1563         }
1564
1565         first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1566         first_desc->ip_hdr_offset += skb_network_offset(skb);
1567         qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
1568
1569         if (!tso)
1570                 return;
1571
1572         /* For LSO, we need to copy the MAC/IP/TCP headers into
1573          * the descriptor ring
1574          */
1575         copied = 0;
1576         offset = 2;
1577
1578         if (vlan_oob) {
1579                 /* Create a TSO vlan header template for firmware */
1580
1581                 hwdesc = &tx_ring->desc_head[producer];
1582                 tx_ring->cmd_buf_arr[producer].skb = NULL;
1583
1584                 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1585                                 hdr_len + VLAN_HLEN);
1586
1587                 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1588                 skb_copy_from_linear_data(skb, vh, 12);
1589                 vh->h_vlan_proto = htons(ETH_P_8021Q);
1590                 vh->h_vlan_TCI = htons(vid);
1591                 skb_copy_from_linear_data_offset(skb, 12,
1592                                 (char *)vh + 16, copy_len - 16);
1593
1594                 copied = copy_len - VLAN_HLEN;
1595                 offset = 0;
1596
1597                 producer = get_next_index(producer, tx_ring->num_desc);
1598         }
1599
1600         while (copied < hdr_len) {
1601
1602                 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1603                                 (hdr_len - copied));
1604
1605                 hwdesc = &tx_ring->desc_head[producer];
1606                 tx_ring->cmd_buf_arr[producer].skb = NULL;
1607
1608                 skb_copy_from_linear_data_offset(skb, copied,
1609                                  (char *)hwdesc + offset, copy_len);
1610
1611                 copied += copy_len;
1612                 offset = 0;
1613
1614                 producer = get_next_index(producer, tx_ring->num_desc);
1615         }
1616
1617         tx_ring->producer = producer;
1618         barrier();
1619         adapter->stats.lso_frames++;
1620 }
1621
1622 static int
1623 qlcnic_map_tx_skb(struct pci_dev *pdev,
1624                 struct sk_buff *skb, struct qlcnic_cmd_buffer *pbuf)
1625 {
1626         struct qlcnic_skb_frag *nf;
1627         struct skb_frag_struct *frag;
1628         int i, nr_frags;
1629         dma_addr_t map;
1630
1631         nr_frags = skb_shinfo(skb)->nr_frags;
1632         nf = &pbuf->frag_array[0];
1633
1634         map = pci_map_single(pdev, skb->data,
1635                         skb_headlen(skb), PCI_DMA_TODEVICE);
1636         if (pci_dma_mapping_error(pdev, map))
1637                 goto out_err;
1638
1639         nf->dma = map;
1640         nf->length = skb_headlen(skb);
1641
1642         for (i = 0; i < nr_frags; i++) {
1643                 frag = &skb_shinfo(skb)->frags[i];
1644                 nf = &pbuf->frag_array[i+1];
1645
1646                 map = pci_map_page(pdev, frag->page, frag->page_offset,
1647                                 frag->size, PCI_DMA_TODEVICE);
1648                 if (pci_dma_mapping_error(pdev, map))
1649                         goto unwind;
1650
1651                 nf->dma = map;
1652                 nf->length = frag->size;
1653         }
1654
1655         return 0;
1656
1657 unwind:
1658         while (--i >= 0) {
1659                 nf = &pbuf->frag_array[i+1];
1660                 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
1661         }
1662
1663         nf = &pbuf->frag_array[0];
1664         pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1665
1666 out_err:
1667         return -ENOMEM;
1668 }
1669
1670 static inline void
1671 qlcnic_clear_cmddesc(u64 *desc)
1672 {
1673         desc[0] = 0ULL;
1674         desc[2] = 0ULL;
1675 }
1676
1677 netdev_tx_t
1678 qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1679 {
1680         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1681         struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
1682         struct qlcnic_cmd_buffer *pbuf;
1683         struct qlcnic_skb_frag *buffrag;
1684         struct cmd_desc_type0 *hwdesc, *first_desc;
1685         struct pci_dev *pdev;
1686         int i, k;
1687
1688         u32 producer;
1689         int frag_count, no_of_desc;
1690         u32 num_txd = tx_ring->num_desc;
1691
1692         if (!test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
1693                 netif_stop_queue(netdev);
1694                 return NETDEV_TX_BUSY;
1695         }
1696
1697         frag_count = skb_shinfo(skb)->nr_frags + 1;
1698
1699         /* 4 fragments per cmd des */
1700         no_of_desc = (frag_count + 3) >> 2;
1701
1702         if (unlikely(no_of_desc + 2 > qlcnic_tx_avail(tx_ring))) {
1703                 netif_stop_queue(netdev);
1704                 adapter->stats.xmit_off++;
1705                 return NETDEV_TX_BUSY;
1706         }
1707
1708         producer = tx_ring->producer;
1709         pbuf = &tx_ring->cmd_buf_arr[producer];
1710
1711         pdev = adapter->pdev;
1712
1713         if (qlcnic_map_tx_skb(pdev, skb, pbuf)) {
1714                 adapter->stats.tx_dma_map_error++;
1715                 goto drop_packet;
1716         }
1717
1718         pbuf->skb = skb;
1719         pbuf->frag_count = frag_count;
1720
1721         first_desc = hwdesc = &tx_ring->desc_head[producer];
1722         qlcnic_clear_cmddesc((u64 *)hwdesc);
1723
1724         qlcnic_set_tx_frags_len(first_desc, frag_count, skb->len);
1725         qlcnic_set_tx_port(first_desc, adapter->portnum);
1726
1727         for (i = 0; i < frag_count; i++) {
1728
1729                 k = i % 4;
1730
1731                 if ((k == 0) && (i > 0)) {
1732                         /* move to next desc.*/
1733                         producer = get_next_index(producer, num_txd);
1734                         hwdesc = &tx_ring->desc_head[producer];
1735                         qlcnic_clear_cmddesc((u64 *)hwdesc);
1736                         tx_ring->cmd_buf_arr[producer].skb = NULL;
1737                 }
1738
1739                 buffrag = &pbuf->frag_array[i];
1740
1741                 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
1742                 switch (k) {
1743                 case 0:
1744                         hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1745                         break;
1746                 case 1:
1747                         hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
1748                         break;
1749                 case 2:
1750                         hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
1751                         break;
1752                 case 3:
1753                         hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
1754                         break;
1755                 }
1756         }
1757
1758         tx_ring->producer = get_next_index(producer, num_txd);
1759
1760         qlcnic_tso_check(netdev, tx_ring, first_desc, skb);
1761
1762         qlcnic_update_cmd_producer(adapter, tx_ring);
1763
1764         adapter->stats.txbytes += skb->len;
1765         adapter->stats.xmitcalled++;
1766
1767         return NETDEV_TX_OK;
1768
1769 drop_packet:
1770         adapter->stats.txdropped++;
1771         dev_kfree_skb_any(skb);
1772         return NETDEV_TX_OK;
1773 }
1774
1775 static int qlcnic_check_temp(struct qlcnic_adapter *adapter)
1776 {
1777         struct net_device *netdev = adapter->netdev;
1778         u32 temp, temp_state, temp_val;
1779         int rv = 0;
1780
1781         temp = QLCRD32(adapter, CRB_TEMP_STATE);
1782
1783         temp_state = qlcnic_get_temp_state(temp);
1784         temp_val = qlcnic_get_temp_val(temp);
1785
1786         if (temp_state == QLCNIC_TEMP_PANIC) {
1787                 dev_err(&netdev->dev,
1788                        "Device temperature %d degrees C exceeds"
1789                        " maximum allowed. Hardware has been shut down.\n",
1790                        temp_val);
1791                 rv = 1;
1792         } else if (temp_state == QLCNIC_TEMP_WARN) {
1793                 if (adapter->temp == QLCNIC_TEMP_NORMAL) {
1794                         dev_err(&netdev->dev,
1795                                "Device temperature %d degrees C "
1796                                "exceeds operating range."
1797                                " Immediate action needed.\n",
1798                                temp_val);
1799                 }
1800         } else {
1801                 if (adapter->temp == QLCNIC_TEMP_WARN) {
1802                         dev_info(&netdev->dev,
1803                                "Device temperature is now %d degrees C"
1804                                " in normal range.\n", temp_val);
1805                 }
1806         }
1807         adapter->temp = temp_state;
1808         return rv;
1809 }
1810
1811 void qlcnic_advert_link_change(struct qlcnic_adapter *adapter, int linkup)
1812 {
1813         struct net_device *netdev = adapter->netdev;
1814
1815         if (adapter->ahw.linkup && !linkup) {
1816                 dev_info(&netdev->dev, "NIC Link is down\n");
1817                 adapter->ahw.linkup = 0;
1818                 if (netif_running(netdev)) {
1819                         netif_carrier_off(netdev);
1820                         netif_stop_queue(netdev);
1821                 }
1822         } else if (!adapter->ahw.linkup && linkup) {
1823                 dev_info(&netdev->dev, "NIC Link is up\n");
1824                 adapter->ahw.linkup = 1;
1825                 if (netif_running(netdev)) {
1826                         netif_carrier_on(netdev);
1827                         netif_wake_queue(netdev);
1828                 }
1829         }
1830 }
1831
1832 static void qlcnic_tx_timeout(struct net_device *netdev)
1833 {
1834         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1835
1836         if (test_bit(__QLCNIC_RESETTING, &adapter->state))
1837                 return;
1838
1839         dev_err(&netdev->dev, "transmit timeout, resetting.\n");
1840         schedule_work(&adapter->tx_timeout_task);
1841 }
1842
1843 static void qlcnic_tx_timeout_task(struct work_struct *work)
1844 {
1845         struct qlcnic_adapter *adapter =
1846                 container_of(work, struct qlcnic_adapter, tx_timeout_task);
1847
1848         if (!netif_running(adapter->netdev))
1849                 return;
1850
1851         if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
1852                 return;
1853
1854         if (++adapter->tx_timeo_cnt >= QLCNIC_MAX_TX_TIMEOUTS)
1855                 goto request_reset;
1856
1857         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1858         if (!qlcnic_reset_context(adapter)) {
1859                 adapter->netdev->trans_start = jiffies;
1860                 return;
1861
1862                 /* context reset failed, fall through for fw reset */
1863         }
1864
1865 request_reset:
1866         adapter->need_fw_reset = 1;
1867         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1868         QLCDB(adapter, DRV, "Resetting adapter\n");
1869 }
1870
1871 static struct net_device_stats *qlcnic_get_stats(struct net_device *netdev)
1872 {
1873         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1874         struct net_device_stats *stats = &netdev->stats;
1875
1876         memset(stats, 0, sizeof(*stats));
1877
1878         stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
1879         stats->tx_packets = adapter->stats.xmitfinished;
1880         stats->rx_bytes = adapter->stats.rxbytes + adapter->stats.lrobytes;
1881         stats->tx_bytes = adapter->stats.txbytes;
1882         stats->rx_dropped = adapter->stats.rxdropped;
1883         stats->tx_dropped = adapter->stats.txdropped;
1884
1885         return stats;
1886 }
1887
1888 static irqreturn_t qlcnic_clear_legacy_intr(struct qlcnic_adapter *adapter)
1889 {
1890         u32 status;
1891
1892         status = readl(adapter->isr_int_vec);
1893
1894         if (!(status & adapter->int_vec_bit))
1895                 return IRQ_NONE;
1896
1897         /* check interrupt state machine, to be sure */
1898         status = readl(adapter->crb_int_state_reg);
1899         if (!ISR_LEGACY_INT_TRIGGERED(status))
1900                 return IRQ_NONE;
1901
1902         writel(0xffffffff, adapter->tgt_status_reg);
1903         /* read twice to ensure write is flushed */
1904         readl(adapter->isr_int_vec);
1905         readl(adapter->isr_int_vec);
1906
1907         return IRQ_HANDLED;
1908 }
1909
1910 static irqreturn_t qlcnic_tmp_intr(int irq, void *data)
1911 {
1912         struct qlcnic_host_sds_ring *sds_ring = data;
1913         struct qlcnic_adapter *adapter = sds_ring->adapter;
1914
1915         if (adapter->flags & QLCNIC_MSIX_ENABLED)
1916                 goto done;
1917         else if (adapter->flags & QLCNIC_MSI_ENABLED) {
1918                 writel(0xffffffff, adapter->tgt_status_reg);
1919                 goto done;
1920         }
1921
1922         if (qlcnic_clear_legacy_intr(adapter) == IRQ_NONE)
1923                 return IRQ_NONE;
1924
1925 done:
1926         adapter->diag_cnt++;
1927         qlcnic_enable_int(sds_ring);
1928         return IRQ_HANDLED;
1929 }
1930
1931 static irqreturn_t qlcnic_intr(int irq, void *data)
1932 {
1933         struct qlcnic_host_sds_ring *sds_ring = data;
1934         struct qlcnic_adapter *adapter = sds_ring->adapter;
1935
1936         if (qlcnic_clear_legacy_intr(adapter) == IRQ_NONE)
1937                 return IRQ_NONE;
1938
1939         napi_schedule(&sds_ring->napi);
1940
1941         return IRQ_HANDLED;
1942 }
1943
1944 static irqreturn_t qlcnic_msi_intr(int irq, void *data)
1945 {
1946         struct qlcnic_host_sds_ring *sds_ring = data;
1947         struct qlcnic_adapter *adapter = sds_ring->adapter;
1948
1949         /* clear interrupt */
1950         writel(0xffffffff, adapter->tgt_status_reg);
1951
1952         napi_schedule(&sds_ring->napi);
1953         return IRQ_HANDLED;
1954 }
1955
1956 static irqreturn_t qlcnic_msix_intr(int irq, void *data)
1957 {
1958         struct qlcnic_host_sds_ring *sds_ring = data;
1959
1960         napi_schedule(&sds_ring->napi);
1961         return IRQ_HANDLED;
1962 }
1963
1964 static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter)
1965 {
1966         u32 sw_consumer, hw_consumer;
1967         int count = 0, i;
1968         struct qlcnic_cmd_buffer *buffer;
1969         struct pci_dev *pdev = adapter->pdev;
1970         struct net_device *netdev = adapter->netdev;
1971         struct qlcnic_skb_frag *frag;
1972         int done;
1973         struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
1974
1975         if (!spin_trylock(&adapter->tx_clean_lock))
1976                 return 1;
1977
1978         sw_consumer = tx_ring->sw_consumer;
1979         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1980
1981         while (sw_consumer != hw_consumer) {
1982                 buffer = &tx_ring->cmd_buf_arr[sw_consumer];
1983                 if (buffer->skb) {
1984                         frag = &buffer->frag_array[0];
1985                         pci_unmap_single(pdev, frag->dma, frag->length,
1986                                          PCI_DMA_TODEVICE);
1987                         frag->dma = 0ULL;
1988                         for (i = 1; i < buffer->frag_count; i++) {
1989                                 frag++;
1990                                 pci_unmap_page(pdev, frag->dma, frag->length,
1991                                                PCI_DMA_TODEVICE);
1992                                 frag->dma = 0ULL;
1993                         }
1994
1995                         adapter->stats.xmitfinished++;
1996                         dev_kfree_skb_any(buffer->skb);
1997                         buffer->skb = NULL;
1998                 }
1999
2000                 sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
2001                 if (++count >= MAX_STATUS_HANDLE)
2002                         break;
2003         }
2004
2005         if (count && netif_running(netdev)) {
2006                 tx_ring->sw_consumer = sw_consumer;
2007
2008                 smp_mb();
2009
2010                 if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev)) {
2011                         __netif_tx_lock(tx_ring->txq, smp_processor_id());
2012                         if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) {
2013                                 netif_wake_queue(netdev);
2014                                 adapter->tx_timeo_cnt = 0;
2015                                 adapter->stats.xmit_on++;
2016                         }
2017                         __netif_tx_unlock(tx_ring->txq);
2018                 }
2019         }
2020         /*
2021          * If everything is freed up to consumer then check if the ring is full
2022          * If the ring is full then check if more needs to be freed and
2023          * schedule the call back again.
2024          *
2025          * This happens when there are 2 CPUs. One could be freeing and the
2026          * other filling it. If the ring is full when we get out of here and
2027          * the card has already interrupted the host then the host can miss the
2028          * interrupt.
2029          *
2030          * There is still a possible race condition and the host could miss an
2031          * interrupt. The card has to take care of this.
2032          */
2033         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
2034         done = (sw_consumer == hw_consumer);
2035         spin_unlock(&adapter->tx_clean_lock);
2036
2037         return done;
2038 }
2039
2040 static int qlcnic_poll(struct napi_struct *napi, int budget)
2041 {
2042         struct qlcnic_host_sds_ring *sds_ring =
2043                 container_of(napi, struct qlcnic_host_sds_ring, napi);
2044
2045         struct qlcnic_adapter *adapter = sds_ring->adapter;
2046
2047         int tx_complete;
2048         int work_done;
2049
2050         tx_complete = qlcnic_process_cmd_ring(adapter);
2051
2052         work_done = qlcnic_process_rcv_ring(sds_ring, budget);
2053
2054         if ((work_done < budget) && tx_complete) {
2055                 napi_complete(&sds_ring->napi);
2056                 if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
2057                         qlcnic_enable_int(sds_ring);
2058         }
2059
2060         return work_done;
2061 }
2062
2063 #ifdef CONFIG_NET_POLL_CONTROLLER
2064 static void qlcnic_poll_controller(struct net_device *netdev)
2065 {
2066         struct qlcnic_adapter *adapter = netdev_priv(netdev);
2067         disable_irq(adapter->irq);
2068         qlcnic_intr(adapter->irq, adapter);
2069         enable_irq(adapter->irq);
2070 }
2071 #endif
2072
2073 static void
2074 qlcnic_idc_debug_info(struct qlcnic_adapter *adapter, u8 encoding)
2075 {
2076         u32 val;
2077
2078         val = adapter->portnum & 0xf;
2079         val |= encoding << 7;
2080         val |= (jiffies - adapter->dev_rst_time) << 8;
2081
2082         QLCWR32(adapter, QLCNIC_CRB_DRV_SCRATCH, val);
2083         adapter->dev_rst_time = jiffies;
2084 }
2085
2086 static int
2087 qlcnic_set_drv_state(struct qlcnic_adapter *adapter, u8 state)
2088 {
2089         u32  val;
2090
2091         WARN_ON(state != QLCNIC_DEV_NEED_RESET &&
2092                         state != QLCNIC_DEV_NEED_QUISCENT);
2093
2094         if (qlcnic_api_lock(adapter))
2095                 return -EIO;
2096
2097         val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2098
2099         if (state == QLCNIC_DEV_NEED_RESET)
2100                 QLC_DEV_SET_RST_RDY(val, adapter->portnum);
2101         else if (state == QLCNIC_DEV_NEED_QUISCENT)
2102                 QLC_DEV_SET_QSCNT_RDY(val, adapter->portnum);
2103
2104         QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2105
2106         qlcnic_api_unlock(adapter);
2107
2108         return 0;
2109 }
2110
2111 static int
2112 qlcnic_clr_drv_state(struct qlcnic_adapter *adapter)
2113 {
2114         u32  val;
2115
2116         if (qlcnic_api_lock(adapter))
2117                 return -EBUSY;
2118
2119         val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2120         QLC_DEV_CLR_RST_QSCNT(val, adapter->portnum);
2121         QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2122
2123         qlcnic_api_unlock(adapter);
2124
2125         return 0;
2126 }
2127
2128 static void
2129 qlcnic_clr_all_drv_state(struct qlcnic_adapter *adapter)
2130 {
2131         u32  val;
2132
2133         if (qlcnic_api_lock(adapter))
2134                 goto err;
2135
2136         val = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
2137         QLC_DEV_CLR_REF_CNT(val, adapter->portnum);
2138         QLCWR32(adapter, QLCNIC_CRB_DEV_REF_COUNT, val);
2139
2140         if (!(val & 0x11111111))
2141                 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_COLD);
2142
2143         val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2144         QLC_DEV_CLR_RST_QSCNT(val, adapter->portnum);
2145         QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2146
2147         qlcnic_api_unlock(adapter);
2148 err:
2149         adapter->fw_fail_cnt = 0;
2150         clear_bit(__QLCNIC_START_FW, &adapter->state);
2151         clear_bit(__QLCNIC_RESETTING, &adapter->state);
2152 }
2153
2154 /* Grab api lock, before checking state */
2155 static int
2156 qlcnic_check_drv_state(struct qlcnic_adapter *adapter)
2157 {
2158         int act, state;
2159
2160         state = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2161         act = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
2162
2163         if (((state & 0x11111111) == (act & 0x11111111)) ||
2164                         ((act & 0x11111111) == ((state >> 1) & 0x11111111)))
2165                 return 0;
2166         else
2167                 return 1;
2168 }
2169
2170 static int qlcnic_check_idc_ver(struct qlcnic_adapter *adapter)
2171 {
2172         u32 val = QLCRD32(adapter, QLCNIC_CRB_DRV_IDC_VER);
2173
2174         if (val != QLCNIC_DRV_IDC_VER) {
2175                 dev_warn(&adapter->pdev->dev, "IDC Version mismatch, driver's"
2176                         " idc ver = %x; reqd = %x\n", QLCNIC_DRV_IDC_VER, val);
2177         }
2178
2179         return 0;
2180 }
2181
2182 static int
2183 qlcnic_can_start_firmware(struct qlcnic_adapter *adapter)
2184 {
2185         u32 val, prev_state;
2186         u8 dev_init_timeo = adapter->dev_init_timeo;
2187         u8 portnum = adapter->portnum;
2188         u8 ret;
2189
2190         if (test_and_clear_bit(__QLCNIC_START_FW, &adapter->state))
2191                 return 1;
2192
2193         if (qlcnic_api_lock(adapter))
2194                 return -1;
2195
2196         val = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
2197         if (!(val & (1 << (portnum * 4)))) {
2198                 QLC_DEV_SET_REF_CNT(val, portnum);
2199                 QLCWR32(adapter, QLCNIC_CRB_DEV_REF_COUNT, val);
2200         }
2201
2202         prev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2203         QLCDB(adapter, HW, "Device state = %u\n", prev_state);
2204
2205         switch (prev_state) {
2206         case QLCNIC_DEV_COLD:
2207                 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_INITIALIZING);
2208                 QLCWR32(adapter, QLCNIC_CRB_DRV_IDC_VER, QLCNIC_DRV_IDC_VER);
2209                 qlcnic_idc_debug_info(adapter, 0);
2210                 qlcnic_api_unlock(adapter);
2211                 return 1;
2212
2213         case QLCNIC_DEV_READY:
2214                 ret = qlcnic_check_idc_ver(adapter);
2215                 qlcnic_api_unlock(adapter);
2216                 return ret;
2217
2218         case QLCNIC_DEV_NEED_RESET:
2219                 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2220                 QLC_DEV_SET_RST_RDY(val, portnum);
2221                 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2222                 break;
2223
2224         case QLCNIC_DEV_NEED_QUISCENT:
2225                 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2226                 QLC_DEV_SET_QSCNT_RDY(val, portnum);
2227                 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2228                 break;
2229
2230         case QLCNIC_DEV_FAILED:
2231                 dev_err(&adapter->pdev->dev, "Device in failed state.\n");
2232                 qlcnic_api_unlock(adapter);
2233                 return -1;
2234
2235         case QLCNIC_DEV_INITIALIZING:
2236         case QLCNIC_DEV_QUISCENT:
2237                 break;
2238         }
2239
2240         qlcnic_api_unlock(adapter);
2241
2242         do {
2243                 msleep(1000);
2244                 prev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2245
2246                 if (prev_state == QLCNIC_DEV_QUISCENT)
2247                         continue;
2248         } while ((prev_state != QLCNIC_DEV_READY) && --dev_init_timeo);
2249
2250         if (!dev_init_timeo) {
2251                 dev_err(&adapter->pdev->dev,
2252                         "Waiting for device to initialize timeout\n");
2253                 return -1;
2254         }
2255
2256         if (qlcnic_api_lock(adapter))
2257                 return -1;
2258
2259         val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2260         QLC_DEV_CLR_RST_QSCNT(val, portnum);
2261         QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2262
2263         ret = qlcnic_check_idc_ver(adapter);
2264         qlcnic_api_unlock(adapter);
2265
2266         return ret;
2267 }
2268
2269 static void
2270 qlcnic_fwinit_work(struct work_struct *work)
2271 {
2272         struct qlcnic_adapter *adapter = container_of(work,
2273                         struct qlcnic_adapter, fw_work.work);
2274         u32 dev_state = 0xf, npar_state;
2275
2276         if (qlcnic_api_lock(adapter))
2277                 goto err_ret;
2278
2279         dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2280         if (dev_state ==  QLCNIC_DEV_QUISCENT) {
2281                 qlcnic_api_unlock(adapter);
2282                 qlcnic_schedule_work(adapter, qlcnic_fwinit_work,
2283                                                 FW_POLL_DELAY * 2);
2284                 return;
2285         }
2286
2287         if (adapter->op_mode == QLCNIC_NON_PRIV_FUNC) {
2288                 npar_state = QLCRD32(adapter, QLCNIC_CRB_DEV_NPAR_STATE);
2289                 if (npar_state == QLCNIC_DEV_NPAR_RDY) {
2290                         qlcnic_api_unlock(adapter);
2291                         goto wait_npar;
2292                 } else {
2293                         qlcnic_schedule_work(adapter, qlcnic_fwinit_work,
2294                                 FW_POLL_DELAY);
2295                         qlcnic_api_unlock(adapter);
2296                         return;
2297                 }
2298         }
2299
2300         if (adapter->fw_wait_cnt++ > adapter->reset_ack_timeo) {
2301                 dev_err(&adapter->pdev->dev, "Reset:Failed to get ack %d sec\n",
2302                                         adapter->reset_ack_timeo);
2303                 goto skip_ack_check;
2304         }
2305
2306         if (!qlcnic_check_drv_state(adapter)) {
2307 skip_ack_check:
2308                 dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2309
2310                 if (dev_state == QLCNIC_DEV_NEED_QUISCENT) {
2311                         QLCWR32(adapter, QLCNIC_CRB_DEV_STATE,
2312                                                 QLCNIC_DEV_QUISCENT);
2313                         qlcnic_schedule_work(adapter, qlcnic_fwinit_work,
2314                                                 FW_POLL_DELAY * 2);
2315                         QLCDB(adapter, DRV, "Quiscing the driver\n");
2316                         qlcnic_idc_debug_info(adapter, 0);
2317
2318                         qlcnic_api_unlock(adapter);
2319                         return;
2320                 }
2321
2322                 if (dev_state == QLCNIC_DEV_NEED_RESET) {
2323                         QLCWR32(adapter, QLCNIC_CRB_DEV_STATE,
2324                                                 QLCNIC_DEV_INITIALIZING);
2325                         set_bit(__QLCNIC_START_FW, &adapter->state);
2326                         QLCDB(adapter, DRV, "Restarting fw\n");
2327                         qlcnic_idc_debug_info(adapter, 0);
2328                 }
2329
2330                 qlcnic_api_unlock(adapter);
2331
2332                 if (!adapter->nic_ops->start_firmware(adapter)) {
2333                         qlcnic_schedule_work(adapter, qlcnic_attach_work, 0);
2334                         return;
2335                 }
2336                 goto err_ret;
2337         }
2338
2339         qlcnic_api_unlock(adapter);
2340
2341 wait_npar:
2342         dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2343         QLCDB(adapter, HW, "Func waiting: Device state=%u\n", dev_state);
2344
2345         switch (dev_state) {
2346         case QLCNIC_DEV_QUISCENT:
2347         case QLCNIC_DEV_NEED_QUISCENT:
2348         case QLCNIC_DEV_NEED_RESET:
2349                 qlcnic_schedule_work(adapter,
2350                         qlcnic_fwinit_work, FW_POLL_DELAY);
2351                 return;
2352         case QLCNIC_DEV_FAILED:
2353                 break;
2354
2355         default:
2356                 if (!adapter->nic_ops->start_firmware(adapter)) {
2357                         qlcnic_schedule_work(adapter, qlcnic_attach_work, 0);
2358                         return;
2359                 }
2360         }
2361
2362 err_ret:
2363         dev_err(&adapter->pdev->dev, "Fwinit work failed state=%u "
2364                 "fw_wait_cnt=%u\n", dev_state, adapter->fw_wait_cnt);
2365         netif_device_attach(adapter->netdev);
2366         qlcnic_clr_all_drv_state(adapter);
2367 }
2368
2369 static void
2370 qlcnic_detach_work(struct work_struct *work)
2371 {
2372         struct qlcnic_adapter *adapter = container_of(work,
2373                         struct qlcnic_adapter, fw_work.work);
2374         struct net_device *netdev = adapter->netdev;
2375         u32 status;
2376
2377         netif_device_detach(netdev);
2378
2379         qlcnic_down(adapter, netdev);
2380
2381         rtnl_lock();
2382         qlcnic_detach(adapter);
2383         rtnl_unlock();
2384
2385         status = QLCRD32(adapter, QLCNIC_PEG_HALT_STATUS1);
2386
2387         if (status & QLCNIC_RCODE_FATAL_ERROR)
2388                 goto err_ret;
2389
2390         if (adapter->temp == QLCNIC_TEMP_PANIC)
2391                 goto err_ret;
2392
2393         if (qlcnic_set_drv_state(adapter, adapter->dev_state))
2394                 goto err_ret;
2395
2396         adapter->fw_wait_cnt = 0;
2397
2398         qlcnic_schedule_work(adapter, qlcnic_fwinit_work, FW_POLL_DELAY);
2399
2400         return;
2401
2402 err_ret:
2403         dev_err(&adapter->pdev->dev, "detach failed; status=%d temp=%d\n",
2404                         status, adapter->temp);
2405         netif_device_attach(netdev);
2406         qlcnic_clr_all_drv_state(adapter);
2407
2408 }
2409
2410 /*Transit to RESET state from READY state only */
2411 static void
2412 qlcnic_dev_request_reset(struct qlcnic_adapter *adapter)
2413 {
2414         u32 state;
2415
2416         if (qlcnic_api_lock(adapter))
2417                 return;
2418
2419         state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2420
2421         if (state == QLCNIC_DEV_READY) {
2422                 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_NEED_RESET);
2423                 QLCDB(adapter, DRV, "NEED_RESET state set\n");
2424                 qlcnic_idc_debug_info(adapter, 0);
2425         }
2426
2427         qlcnic_api_unlock(adapter);
2428 }
2429
2430 /* Transit to NPAR READY state from NPAR NOT READY state */
2431 static void
2432 qlcnic_dev_set_npar_ready(struct qlcnic_adapter *adapter)
2433 {
2434         u32 state;
2435
2436         if (qlcnic_api_lock(adapter))
2437                 return;
2438
2439         state = QLCRD32(adapter, QLCNIC_CRB_DEV_NPAR_STATE);
2440
2441         if (state != QLCNIC_DEV_NPAR_RDY) {
2442                 QLCWR32(adapter, QLCNIC_CRB_DEV_NPAR_STATE,
2443                         QLCNIC_DEV_NPAR_RDY);
2444                 QLCDB(adapter, DRV, "NPAR READY state set\n");
2445         }
2446
2447         qlcnic_api_unlock(adapter);
2448 }
2449
2450 static void
2451 qlcnic_schedule_work(struct qlcnic_adapter *adapter,
2452                 work_func_t func, int delay)
2453 {
2454         INIT_DELAYED_WORK(&adapter->fw_work, func);
2455         schedule_delayed_work(&adapter->fw_work, round_jiffies_relative(delay));
2456 }
2457
2458 static void
2459 qlcnic_cancel_fw_work(struct qlcnic_adapter *adapter)
2460 {
2461         while (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
2462                 msleep(10);
2463
2464         cancel_delayed_work_sync(&adapter->fw_work);
2465 }
2466
2467 static void
2468 qlcnic_attach_work(struct work_struct *work)
2469 {
2470         struct qlcnic_adapter *adapter = container_of(work,
2471                                 struct qlcnic_adapter, fw_work.work);
2472         struct net_device *netdev = adapter->netdev;
2473         int err;
2474
2475         if (netif_running(netdev)) {
2476                 err = qlcnic_attach(adapter);
2477                 if (err)
2478                         goto done;
2479
2480                 err = qlcnic_up(adapter, netdev);
2481                 if (err) {
2482                         qlcnic_detach(adapter);
2483                         goto done;
2484                 }
2485
2486                 qlcnic_config_indev_addr(netdev, NETDEV_UP);
2487         }
2488
2489 done:
2490         netif_device_attach(netdev);
2491         adapter->fw_fail_cnt = 0;
2492         clear_bit(__QLCNIC_RESETTING, &adapter->state);
2493
2494         if (!qlcnic_clr_drv_state(adapter))
2495                 qlcnic_schedule_work(adapter, qlcnic_fw_poll_work,
2496                                                         FW_POLL_DELAY);
2497 }
2498
2499 static int
2500 qlcnic_check_health(struct qlcnic_adapter *adapter)
2501 {
2502         u32 state = 0, heartbit;
2503         struct net_device *netdev = adapter->netdev;
2504
2505         if (qlcnic_check_temp(adapter))
2506                 goto detach;
2507
2508         if (adapter->need_fw_reset)
2509                 qlcnic_dev_request_reset(adapter);
2510
2511         state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2512         if (state == QLCNIC_DEV_NEED_RESET || state == QLCNIC_DEV_NEED_QUISCENT)
2513                 adapter->need_fw_reset = 1;
2514
2515         heartbit = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
2516         if (heartbit != adapter->heartbit) {
2517                 adapter->heartbit = heartbit;
2518                 adapter->fw_fail_cnt = 0;
2519                 if (adapter->need_fw_reset)
2520                         goto detach;
2521                 return 0;
2522         }
2523
2524         if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2525                 return 0;
2526
2527         qlcnic_dev_request_reset(adapter);
2528
2529         clear_bit(__QLCNIC_FW_ATTACHED, &adapter->state);
2530
2531         dev_info(&netdev->dev, "firmware hang detected\n");
2532
2533 detach:
2534         adapter->dev_state = (state == QLCNIC_DEV_NEED_QUISCENT) ? state :
2535                 QLCNIC_DEV_NEED_RESET;
2536
2537         if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
2538                 !test_and_set_bit(__QLCNIC_RESETTING, &adapter->state)) {
2539
2540                 qlcnic_schedule_work(adapter, qlcnic_detach_work, 0);
2541                 QLCDB(adapter, DRV, "fw recovery scheduled.\n");
2542         }
2543
2544         return 1;
2545 }
2546
2547 static void
2548 qlcnic_fw_poll_work(struct work_struct *work)
2549 {
2550         struct qlcnic_adapter *adapter = container_of(work,
2551                                 struct qlcnic_adapter, fw_work.work);
2552
2553         if (test_bit(__QLCNIC_RESETTING, &adapter->state))
2554                 goto reschedule;
2555
2556
2557         if (qlcnic_check_health(adapter))
2558                 return;
2559
2560 reschedule:
2561         qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
2562 }
2563
2564 static int
2565 qlcnicvf_start_firmware(struct qlcnic_adapter *adapter)
2566 {
2567         int err;
2568
2569         err = qlcnic_can_start_firmware(adapter);
2570         if (err)
2571                 return err;
2572
2573         qlcnic_check_options(adapter);
2574
2575         adapter->need_fw_reset = 0;
2576
2577         return err;
2578 }
2579
2580 static int
2581 qlcnicvf_config_bridged_mode(struct qlcnic_adapter *adapter, u32 enable)
2582 {
2583         return -EOPNOTSUPP;
2584 }
2585
2586 static int
2587 qlcnicvf_config_led(struct qlcnic_adapter *adapter, u32 state, u32 rate)
2588 {
2589         return -EOPNOTSUPP;
2590 }
2591
2592 static int
2593 qlcnicvf_set_ilb_mode(struct qlcnic_adapter *adapter)
2594 {
2595         return -EOPNOTSUPP;
2596 }
2597
2598 static void
2599 qlcnicvf_clear_ilb_mode(struct qlcnic_adapter *adapter)
2600 {
2601         return;
2602 }
2603
2604 static ssize_t
2605 qlcnic_store_bridged_mode(struct device *dev,
2606                 struct device_attribute *attr, const char *buf, size_t len)
2607 {
2608         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2609         unsigned long new;
2610         int ret = -EINVAL;
2611
2612         if (!(adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG))
2613                 goto err_out;
2614
2615         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
2616                 goto err_out;
2617
2618         if (strict_strtoul(buf, 2, &new))
2619                 goto err_out;
2620
2621         if (!adapter->nic_ops->config_bridged_mode(adapter, !!new))
2622                 ret = len;
2623
2624 err_out:
2625         return ret;
2626 }
2627
2628 static ssize_t
2629 qlcnic_show_bridged_mode(struct device *dev,
2630                 struct device_attribute *attr, char *buf)
2631 {
2632         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2633         int bridged_mode = 0;
2634
2635         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
2636                 bridged_mode = !!(adapter->flags & QLCNIC_BRIDGE_ENABLED);
2637
2638         return sprintf(buf, "%d\n", bridged_mode);
2639 }
2640
2641 static struct device_attribute dev_attr_bridged_mode = {
2642        .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2643        .show = qlcnic_show_bridged_mode,
2644        .store = qlcnic_store_bridged_mode,
2645 };
2646
2647 static ssize_t
2648 qlcnic_store_diag_mode(struct device *dev,
2649                 struct device_attribute *attr, const char *buf, size_t len)
2650 {
2651         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2652         unsigned long new;
2653
2654         if (strict_strtoul(buf, 2, &new))
2655                 return -EINVAL;
2656
2657         if (!!new != !!(adapter->flags & QLCNIC_DIAG_ENABLED))
2658                 adapter->flags ^= QLCNIC_DIAG_ENABLED;
2659
2660         return len;
2661 }
2662
2663 static ssize_t
2664 qlcnic_show_diag_mode(struct device *dev,
2665                 struct device_attribute *attr, char *buf)
2666 {
2667         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2668
2669         return sprintf(buf, "%d\n",
2670                         !!(adapter->flags & QLCNIC_DIAG_ENABLED));
2671 }
2672
2673 static struct device_attribute dev_attr_diag_mode = {
2674         .attr = {.name = "diag_mode", .mode = (S_IRUGO | S_IWUSR)},
2675         .show = qlcnic_show_diag_mode,
2676         .store = qlcnic_store_diag_mode,
2677 };
2678
2679 static int
2680 qlcnic_sysfs_validate_crb(struct qlcnic_adapter *adapter,
2681                 loff_t offset, size_t size)
2682 {
2683         size_t crb_size = 4;
2684
2685         if (!(adapter->flags & QLCNIC_DIAG_ENABLED))
2686                 return -EIO;
2687
2688         if (offset < QLCNIC_PCI_CRBSPACE) {
2689                 if (ADDR_IN_RANGE(offset, QLCNIC_PCI_CAMQM,
2690                                         QLCNIC_PCI_CAMQM_END))
2691                         crb_size = 8;
2692                 else
2693                         return -EINVAL;
2694         }
2695
2696         if ((size != crb_size) || (offset & (crb_size-1)))
2697                 return  -EINVAL;
2698
2699         return 0;
2700 }
2701
2702 static ssize_t
2703 qlcnic_sysfs_read_crb(struct file *filp, struct kobject *kobj,
2704                 struct bin_attribute *attr,
2705                 char *buf, loff_t offset, size_t size)
2706 {
2707         struct device *dev = container_of(kobj, struct device, kobj);
2708         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2709         u32 data;
2710         u64 qmdata;
2711         int ret;
2712
2713         ret = qlcnic_sysfs_validate_crb(adapter, offset, size);
2714         if (ret != 0)
2715                 return ret;
2716
2717         if (ADDR_IN_RANGE(offset, QLCNIC_PCI_CAMQM, QLCNIC_PCI_CAMQM_END)) {
2718                 qlcnic_pci_camqm_read_2M(adapter, offset, &qmdata);
2719                 memcpy(buf, &qmdata, size);
2720         } else {
2721                 data = QLCRD32(adapter, offset);
2722                 memcpy(buf, &data, size);
2723         }
2724         return size;
2725 }
2726
2727 static ssize_t
2728 qlcnic_sysfs_write_crb(struct file *filp, struct kobject *kobj,
2729                 struct bin_attribute *attr,
2730                 char *buf, loff_t offset, size_t size)
2731 {
2732         struct device *dev = container_of(kobj, struct device, kobj);
2733         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2734         u32 data;
2735         u64 qmdata;
2736         int ret;
2737
2738         ret = qlcnic_sysfs_validate_crb(adapter, offset, size);
2739         if (ret != 0)
2740                 return ret;
2741
2742         if (ADDR_IN_RANGE(offset, QLCNIC_PCI_CAMQM, QLCNIC_PCI_CAMQM_END)) {
2743                 memcpy(&qmdata, buf, size);
2744                 qlcnic_pci_camqm_write_2M(adapter, offset, qmdata);
2745         } else {
2746                 memcpy(&data, buf, size);
2747                 QLCWR32(adapter, offset, data);
2748         }
2749         return size;
2750 }
2751
2752 static int
2753 qlcnic_sysfs_validate_mem(struct qlcnic_adapter *adapter,
2754                 loff_t offset, size_t size)
2755 {
2756         if (!(adapter->flags & QLCNIC_DIAG_ENABLED))
2757                 return -EIO;
2758
2759         if ((size != 8) || (offset & 0x7))
2760                 return  -EIO;
2761
2762         return 0;
2763 }
2764
2765 static ssize_t
2766 qlcnic_sysfs_read_mem(struct file *filp, struct kobject *kobj,
2767                 struct bin_attribute *attr,
2768                 char *buf, loff_t offset, size_t size)
2769 {
2770         struct device *dev = container_of(kobj, struct device, kobj);
2771         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2772         u64 data;
2773         int ret;
2774
2775         ret = qlcnic_sysfs_validate_mem(adapter, offset, size);
2776         if (ret != 0)
2777                 return ret;
2778
2779         if (qlcnic_pci_mem_read_2M(adapter, offset, &data))
2780                 return -EIO;
2781
2782         memcpy(buf, &data, size);
2783
2784         return size;
2785 }
2786
2787 static ssize_t
2788 qlcnic_sysfs_write_mem(struct file *filp, struct kobject *kobj,
2789                 struct bin_attribute *attr,
2790                 char *buf, loff_t offset, size_t size)
2791 {
2792         struct device *dev = container_of(kobj, struct device, kobj);
2793         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2794         u64 data;
2795         int ret;
2796
2797         ret = qlcnic_sysfs_validate_mem(adapter, offset, size);
2798         if (ret != 0)
2799                 return ret;
2800
2801         memcpy(&data, buf, size);
2802
2803         if (qlcnic_pci_mem_write_2M(adapter, offset, data))
2804                 return -EIO;
2805
2806         return size;
2807 }
2808
2809
2810 static struct bin_attribute bin_attr_crb = {
2811         .attr = {.name = "crb", .mode = (S_IRUGO | S_IWUSR)},
2812         .size = 0,
2813         .read = qlcnic_sysfs_read_crb,
2814         .write = qlcnic_sysfs_write_crb,
2815 };
2816
2817 static struct bin_attribute bin_attr_mem = {
2818         .attr = {.name = "mem", .mode = (S_IRUGO | S_IWUSR)},
2819         .size = 0,
2820         .read = qlcnic_sysfs_read_mem,
2821         .write = qlcnic_sysfs_write_mem,
2822 };
2823
2824 static void
2825 qlcnic_create_sysfs_entries(struct qlcnic_adapter *adapter)
2826 {
2827         struct device *dev = &adapter->pdev->dev;
2828
2829         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
2830                 if (device_create_file(dev, &dev_attr_bridged_mode))
2831                         dev_warn(dev,
2832                                 "failed to create bridged_mode sysfs entry\n");
2833 }
2834
2835 static void
2836 qlcnic_remove_sysfs_entries(struct qlcnic_adapter *adapter)
2837 {
2838         struct device *dev = &adapter->pdev->dev;
2839
2840         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
2841                 device_remove_file(dev, &dev_attr_bridged_mode);
2842 }
2843
2844 static void
2845 qlcnic_create_diag_entries(struct qlcnic_adapter *adapter)
2846 {
2847         struct device *dev = &adapter->pdev->dev;
2848
2849         if (device_create_file(dev, &dev_attr_diag_mode))
2850                 dev_info(dev, "failed to create diag_mode sysfs entry\n");
2851         if (device_create_bin_file(dev, &bin_attr_crb))
2852                 dev_info(dev, "failed to create crb sysfs entry\n");
2853         if (device_create_bin_file(dev, &bin_attr_mem))
2854                 dev_info(dev, "failed to create mem sysfs entry\n");
2855 }
2856
2857
2858 static void
2859 qlcnic_remove_diag_entries(struct qlcnic_adapter *adapter)
2860 {
2861         struct device *dev = &adapter->pdev->dev;
2862
2863         device_remove_file(dev, &dev_attr_diag_mode);
2864         device_remove_bin_file(dev, &bin_attr_crb);
2865         device_remove_bin_file(dev, &bin_attr_mem);
2866 }
2867
2868 #ifdef CONFIG_INET
2869
2870 #define is_qlcnic_netdev(dev) (dev->netdev_ops == &qlcnic_netdev_ops)
2871
2872 static void
2873 qlcnic_config_indev_addr(struct net_device *dev, unsigned long event)
2874 {
2875         struct in_device *indev;
2876         struct qlcnic_adapter *adapter = netdev_priv(dev);
2877
2878         indev = in_dev_get(dev);
2879         if (!indev)
2880                 return;
2881
2882         for_ifa(indev) {
2883                 switch (event) {
2884                 case NETDEV_UP:
2885                         qlcnic_config_ipaddr(adapter,
2886                                         ifa->ifa_address, QLCNIC_IP_UP);
2887                         break;
2888                 case NETDEV_DOWN:
2889                         qlcnic_config_ipaddr(adapter,
2890                                         ifa->ifa_address, QLCNIC_IP_DOWN);
2891                         break;
2892                 default:
2893                         break;
2894                 }
2895         } endfor_ifa(indev);
2896
2897         in_dev_put(indev);
2898 }
2899
2900 static int qlcnic_netdev_event(struct notifier_block *this,
2901                                  unsigned long event, void *ptr)
2902 {
2903         struct qlcnic_adapter *adapter;
2904         struct net_device *dev = (struct net_device *)ptr;
2905
2906 recheck:
2907         if (dev == NULL)
2908                 goto done;
2909
2910         if (dev->priv_flags & IFF_802_1Q_VLAN) {
2911                 dev = vlan_dev_real_dev(dev);
2912                 goto recheck;
2913         }
2914
2915         if (!is_qlcnic_netdev(dev))
2916                 goto done;
2917
2918         adapter = netdev_priv(dev);
2919
2920         if (!adapter)
2921                 goto done;
2922
2923         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
2924                 goto done;
2925
2926         qlcnic_config_indev_addr(dev, event);
2927 done:
2928         return NOTIFY_DONE;
2929 }
2930
2931 static int
2932 qlcnic_inetaddr_event(struct notifier_block *this,
2933                 unsigned long event, void *ptr)
2934 {
2935         struct qlcnic_adapter *adapter;
2936         struct net_device *dev;
2937
2938         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2939
2940         dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
2941
2942 recheck:
2943         if (dev == NULL || !netif_running(dev))
2944                 goto done;
2945
2946         if (dev->priv_flags & IFF_802_1Q_VLAN) {
2947                 dev = vlan_dev_real_dev(dev);
2948                 goto recheck;
2949         }
2950
2951         if (!is_qlcnic_netdev(dev))
2952                 goto done;
2953
2954         adapter = netdev_priv(dev);
2955
2956         if (!adapter)
2957                 goto done;
2958
2959         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
2960                 goto done;
2961
2962         switch (event) {
2963         case NETDEV_UP:
2964                 qlcnic_config_ipaddr(adapter, ifa->ifa_address, QLCNIC_IP_UP);
2965                 break;
2966         case NETDEV_DOWN:
2967                 qlcnic_config_ipaddr(adapter, ifa->ifa_address, QLCNIC_IP_DOWN);
2968                 break;
2969         default:
2970                 break;
2971         }
2972
2973 done:
2974         return NOTIFY_DONE;
2975 }
2976
2977 static struct notifier_block    qlcnic_netdev_cb = {
2978         .notifier_call = qlcnic_netdev_event,
2979 };
2980
2981 static struct notifier_block qlcnic_inetaddr_cb = {
2982         .notifier_call = qlcnic_inetaddr_event,
2983 };
2984 #else
2985 static void
2986 qlcnic_config_indev_addr(struct net_device *dev, unsigned long event)
2987 { }
2988 #endif
2989
2990 static struct pci_driver qlcnic_driver = {
2991         .name = qlcnic_driver_name,
2992         .id_table = qlcnic_pci_tbl,
2993         .probe = qlcnic_probe,
2994         .remove = __devexit_p(qlcnic_remove),
2995 #ifdef CONFIG_PM
2996         .suspend = qlcnic_suspend,
2997         .resume = qlcnic_resume,
2998 #endif
2999         .shutdown = qlcnic_shutdown
3000 };
3001
3002 static int __init qlcnic_init_module(void)
3003 {
3004
3005         printk(KERN_INFO "%s\n", qlcnic_driver_string);
3006
3007 #ifdef CONFIG_INET
3008         register_netdevice_notifier(&qlcnic_netdev_cb);
3009         register_inetaddr_notifier(&qlcnic_inetaddr_cb);
3010 #endif
3011
3012
3013         return pci_register_driver(&qlcnic_driver);
3014 }
3015
3016 module_init(qlcnic_init_module);
3017
3018 static void __exit qlcnic_exit_module(void)
3019 {
3020
3021         pci_unregister_driver(&qlcnic_driver);
3022
3023 #ifdef CONFIG_INET
3024         unregister_inetaddr_notifier(&qlcnic_inetaddr_cb);
3025         unregister_netdevice_notifier(&qlcnic_netdev_cb);
3026 #endif
3027 }
3028
3029 module_exit(qlcnic_exit_module);