drivers/net/qlcnic/qlcnic_main.c

   1 /*
   2  * Copyright (C) 2009 - QLogic Corporation.
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  18  * MA  02111-1307, USA.
  19  *
  20  * The full GNU General Public License is included in this distribution
  21  * in the file called "COPYING".
  22  *
  23  */
  24
  25 #include <linux/slab.h>
  26 #include <linux/vmalloc.h>
  27 #include <linux/interrupt.h>
  28
  29 #include "qlcnic.h"
  30
  31 #include <linux/dma-mapping.h>
  32 #include <linux/if_vlan.h>
  33 #include <net/ip.h>
  34 #include <linux/ipv6.h>
  35 #include <linux/inetdevice.h>
  36 #include <linux/sysfs.h>
  37
  38 MODULE_DESCRIPTION("QLogic 10 GbE Converged Ethernet Driver");
  39 MODULE_LICENSE("GPL");
  40 MODULE_VERSION(QLCNIC_LINUX_VERSIONID);
  41 MODULE_FIRMWARE(QLCNIC_UNIFIED_ROMIMAGE_NAME);
  42
  43 char qlcnic_driver_name[] = "qlcnic";
  44 static const char qlcnic_driver_string[] = "QLogic Converged Ethernet Driver v"
  45     QLCNIC_LINUX_VERSIONID;
  46
  47 static int port_mode = QLCNIC_PORT_MODE_AUTO_NEG;
  48
  49 /* Default to restricted 1G auto-neg mode */
  50 static int wol_port_mode = 5;
  51
  52 static int use_msi = 1;
  53 module_param(use_msi, int, 0644);
  54 MODULE_PARM_DESC(use_msi, "MSI interrupt (0=disabled, 1=enabled");
  55
  56 static int use_msi_x = 1;
  57 module_param(use_msi_x, int, 0644);
  58 MODULE_PARM_DESC(use_msi_x, "MSI-X interrupt (0=disabled, 1=enabled");
  59
  60 static int auto_fw_reset = AUTO_FW_RESET_ENABLED;
  61 module_param(auto_fw_reset, int, 0644);
  62 MODULE_PARM_DESC(auto_fw_reset, "Auto firmware reset (0=disabled, 1=enabled");
  63
  64 static int 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         for (i = 0; i < QLCNIC_MAX_PCI_FUNC; i++) {
 506                 id = adapter->npars[i].id;
 507                 if (adapter->npars[i].type != QLCNIC_TYPE_NIC ||
 508                         id == adapter->ahw.pci_func)
 509                         continue;
 510                 data |= (qlcnic_config_npars & QLC_DEV_SET_DRV(0xf, id));
 511         }
 512         writel(data, priv_op);
 513
 514 err_npar:
 515         qlcnic_api_unlock(adapter);
 516 err_lock:
 517         return ret;
 518 }
 519
 520 static u8
 521 qlcnic_set_mgmt_driver(struct qlcnic_adapter *adapter)
 522 {
 523         u8 i, ret = 0;
 524
 525         if (qlcnic_get_pci_info(adapter))
 526                 return ret;
 527         /* Set the eswitch */
 528         for (i = 0; i < QLCNIC_NIU_MAX_XG_PORTS; i++) {
 529                 if (!qlcnic_get_eswitch_capabilities(adapter, i,
 530                         &adapter->eswitch[i])) {
 531                         ret++;
 532                         qlcnic_toggle_eswitch(adapter, i, ret);
 533                 }
 534         }
 535         return ret;
 536 }
 537
 538 static u32
 539 qlcnic_get_driver_mode(struct qlcnic_adapter *adapter)
 540 {
 541         void __iomem *msix_base_addr;
 542         void __iomem *priv_op;
 543         u32 func;
 544         u32 msix_base;
 545         u32 op_mode, priv_level;
 546
 547         /* Determine FW API version */
 548         adapter->fw_hal_version = readl(adapter->ahw.pci_base0 + QLCNIC_FW_API);
 549         if (adapter->fw_hal_version == ~0) {
 550                 adapter->nic_ops = &qlcnic_ops;
 551                 adapter->fw_hal_version = QLCNIC_FW_BASE;
 552                 adapter->ahw.pci_func = PCI_FUNC(adapter->pdev->devfn);
 553                 dev_info(&adapter->pdev->dev,
 554                         "FW does not support nic partion\n");
 555                 return adapter->fw_hal_version;
 556         }
 557
 558         /* Find PCI function number */
 559         pci_read_config_dword(adapter->pdev, QLCNIC_MSIX_TABLE_OFFSET, &func);
 560         msix_base_addr = adapter->ahw.pci_base0 + QLCNIC_MSIX_BASE;
 561         msix_base = readl(msix_base_addr);
 562         func = (func - msix_base)/QLCNIC_MSIX_TBL_PGSIZE;
 563         adapter->ahw.pci_func = func;
 564
 565         /* Determine function privilege level */
 566         priv_op = adapter->ahw.pci_base0 + QLCNIC_DRV_OP_MODE;
 567         op_mode = readl(priv_op);
 568         if (op_mode == QLC_DEV_DRV_DEFAULT) {
 569                 priv_level = QLCNIC_MGMT_FUNC;
 570                 if (qlcnic_api_lock(adapter))
 571                         return 0;
 572                 op_mode = (op_mode & ~QLC_DEV_SET_DRV(0xf, func)) |
 573                                 (QLC_DEV_SET_DRV(QLCNIC_MGMT_FUNC, func));
 574                 writel(op_mode, priv_op);
 575                 qlcnic_api_unlock(adapter);
 576
 577         } else
 578                 priv_level = QLC_DEV_GET_DRV(op_mode, adapter->ahw.pci_func);
 579
 580         switch (priv_level) {
 581         case QLCNIC_MGMT_FUNC:
 582                 adapter->op_mode = QLCNIC_MGMT_FUNC;
 583                 adapter->nic_ops = &qlcnic_pf_ops;
 584                 /* Set privilege level for other functions */
 585                 if (qlcnic_config_npars)
 586                         qlcnic_set_function_modes(adapter);
 587                 qlcnic_dev_set_npar_ready(adapter);
 588                 dev_info(&adapter->pdev->dev,
 589                         "HAL Version: %d, Management function\n",
 590                         adapter->fw_hal_version);
 591                 break;
 592         case QLCNIC_PRIV_FUNC:
 593                 adapter->op_mode = QLCNIC_PRIV_FUNC;
 594                 dev_info(&adapter->pdev->dev,
 595                         "HAL Version: %d, Privileged function\n",
 596                         adapter->fw_hal_version);
 597                 adapter->nic_ops = &qlcnic_pf_ops;
 598                 break;
 599         case QLCNIC_NON_PRIV_FUNC:
 600                 adapter->op_mode = QLCNIC_NON_PRIV_FUNC;
 601                 dev_info(&adapter->pdev->dev,
 602                         "HAL Version: %d Non Privileged function\n",
 603                         adapter->fw_hal_version);
 604                 adapter->nic_ops = &qlcnic_vf_ops;
 605                 break;
 606         default:
 607                 dev_info(&adapter->pdev->dev, "Unknown function mode: %d\n",
 608                         priv_level);
 609                 return 0;
 610         }
 611         return adapter->fw_hal_version;
 612 }
 613
 614 static int
 615 qlcnic_setup_pci_map(struct qlcnic_adapter *adapter)
 616 {
 617         void __iomem *mem_ptr0 = NULL;
 618         resource_size_t mem_base;
 619         unsigned long mem_len, pci_len0 = 0;
 620
 621         struct pci_dev *pdev = adapter->pdev;
 622
 623         /* remap phys address */
 624         mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
 625         mem_len = pci_resource_len(pdev, 0);
 626
 627         if (mem_len == QLCNIC_PCI_2MB_SIZE) {
 628
 629                 mem_ptr0 = pci_ioremap_bar(pdev, 0);
 630                 if (mem_ptr0 == NULL) {
 631                         dev_err(&pdev->dev, "failed to map PCI bar 0\n");
 632                         return -EIO;
 633                 }
 634                 pci_len0 = mem_len;
 635         } else {
 636                 return -EIO;
 637         }
 638
 639         dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
 640
 641         adapter->ahw.pci_base0 = mem_ptr0;
 642         adapter->ahw.pci_len0 = pci_len0;
 643
 644         if (!qlcnic_get_driver_mode(adapter)) {
 645                 iounmap(adapter->ahw.pci_base0);
 646                 return -EIO;
 647         }
 648
 649         adapter->ahw.ocm_win_crb = qlcnic_get_ioaddr(adapter,
 650                 QLCNIC_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(adapter->ahw.pci_func)));
 651
 652         return 0;
 653 }
 654
 655 static void get_brd_name(struct qlcnic_adapter *adapter, char *name)
 656 {
 657         struct pci_dev *pdev = adapter->pdev;
 658         int i, found = 0;
 659
 660         for (i = 0; i < NUM_SUPPORTED_BOARDS; ++i) {
 661                 if (qlcnic_boards[i].vendor == pdev->vendor &&
 662                         qlcnic_boards[i].device == pdev->device &&
 663                         qlcnic_boards[i].sub_vendor == pdev->subsystem_vendor &&
 664                         qlcnic_boards[i].sub_device == pdev->subsystem_device) {
 665                                 sprintf(name, "%pM: %s" ,
 666                                         adapter->mac_addr,
 667                                         qlcnic_boards[i].short_name);
 668                                 found = 1;
 669                                 break;
 670                 }
 671
 672         }
 673
 674         if (!found)
 675                 name = "Unknown";
 676 }
 677
 678 static void
 679 qlcnic_check_options(struct qlcnic_adapter *adapter)
 680 {
 681         u32 fw_major, fw_minor, fw_build;
 682         char brd_name[QLCNIC_MAX_BOARD_NAME_LEN];
 683         char serial_num[32];
 684         int i, offset, val;
 685         int *ptr32;
 686         struct pci_dev *pdev = adapter->pdev;
 687
 688         adapter->driver_mismatch = 0;
 689
 690         ptr32 = (int *)&serial_num;
 691         offset = QLCNIC_FW_SERIAL_NUM_OFFSET;
 692         for (i = 0; i < 8; i++) {
 693                 if (qlcnic_rom_fast_read(adapter, offset, &val) == -1) {
 694                         dev_err(&pdev->dev, "error reading board info\n");
 695                         adapter->driver_mismatch = 1;
 696                         return;
 697                 }
 698                 ptr32[i] = cpu_to_le32(val);
 699                 offset += sizeof(u32);
 700         }
 701
 702         fw_major = QLCRD32(adapter, QLCNIC_FW_VERSION_MAJOR);
 703         fw_minor = QLCRD32(adapter, QLCNIC_FW_VERSION_MINOR);
 704         fw_build = QLCRD32(adapter, QLCNIC_FW_VERSION_SUB);
 705
 706         adapter->fw_version = QLCNIC_VERSION_CODE(fw_major, fw_minor, fw_build);
 707
 708         if (adapter->portnum == 0) {
 709                 get_brd_name(adapter, brd_name);
 710
 711                 pr_info("%s: %s Board Chip rev 0x%x\n",
 712                                 module_name(THIS_MODULE),
 713                                 brd_name, adapter->ahw.revision_id);
 714         }
 715
 716         dev_info(&pdev->dev, "firmware v%d.%d.%d\n",
 717                         fw_major, fw_minor, fw_build);
 718
 719         if (adapter->fw_hal_version == QLCNIC_FW_NPAR)
 720                 qlcnic_get_nic_info(adapter, adapter->ahw.pci_func);
 721         else
 722                 adapter->capabilities = QLCRD32(adapter, CRB_FW_CAPABILITIES_1);
 723
 724         adapter->flags &= ~QLCNIC_LRO_ENABLED;
 725
 726         if (adapter->ahw.port_type == QLCNIC_XGBE) {
 727                 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
 728                 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
 729         } else if (adapter->ahw.port_type == QLCNIC_GBE) {
 730                 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
 731                 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
 732         }
 733
 734         adapter->msix_supported = !!use_msi_x;
 735         adapter->rss_supported = !!use_msi_x;
 736
 737         adapter->num_txd = MAX_CMD_DESCRIPTORS;
 738
 739         adapter->max_rds_rings = 2;
 740 }
 741
 742 static int
 743 qlcnic_start_firmware(struct qlcnic_adapter *adapter)
 744 {
 745         int val, err, first_boot;
 746
 747         err = qlcnic_can_start_firmware(adapter);
 748         if (err < 0)
 749                 return err;
 750         else if (!err)
 751                 goto wait_init;
 752
 753         first_boot = QLCRD32(adapter, QLCNIC_CAM_RAM(0x1fc));
 754         if (first_boot == 0x55555555)
 755                 /* This is the first boot after power up */
 756                 QLCWR32(adapter, QLCNIC_CAM_RAM(0x1fc), QLCNIC_BDINFO_MAGIC);
 757
 758         if (load_fw_file)
 759                 qlcnic_request_firmware(adapter);
 760         else
 761                 adapter->fw_type = QLCNIC_FLASH_ROMIMAGE;
 762
 763         err = qlcnic_need_fw_reset(adapter);
 764         if (err < 0)
 765                 goto err_out;
 766         if (err == 0)
 767                 goto wait_init;
 768
 769         if (first_boot != 0x55555555) {
 770                 QLCWR32(adapter, CRB_CMDPEG_STATE, 0);
 771                 qlcnic_pinit_from_rom(adapter);
 772                 msleep(1);
 773         }
 774
 775         QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS1, 0);
 776         QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS2, 0);
 777
 778         qlcnic_set_port_mode(adapter);
 779
 780         err = qlcnic_load_firmware(adapter);
 781         if (err)
 782                 goto err_out;
 783
 784         qlcnic_release_firmware(adapter);
 785
 786         val = (_QLCNIC_LINUX_MAJOR << 16)
 787                 | ((_QLCNIC_LINUX_MINOR << 8))
 788                 | (_QLCNIC_LINUX_SUBVERSION);
 789         QLCWR32(adapter, CRB_DRIVER_VERSION, val);
 790
 791 wait_init:
 792         /* Handshake with the card before we register the devices. */
 793         err = qlcnic_phantom_init(adapter);
 794         if (err)
 795                 goto err_out;
 796
 797         QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_READY);
 798         qlcnic_idc_debug_info(adapter, 1);
 799
 800         qlcnic_dev_set_npar_ready(adapter);
 801
 802         qlcnic_check_options(adapter);
 803
 804         if (adapter->fw_hal_version != QLCNIC_FW_BASE &&
 805                         adapter->op_mode == QLCNIC_MGMT_FUNC)
 806                 qlcnic_set_mgmt_driver(adapter);
 807
 808         adapter->need_fw_reset = 0;
 809
 810         qlcnic_release_firmware(adapter);
 811         return 0;
 812
 813 err_out:
 814         QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_FAILED);
 815         dev_err(&adapter->pdev->dev, "Device state set to failed\n");
 816         qlcnic_release_firmware(adapter);
 817         return err;
 818 }
 819
 820 static int
 821 qlcnic_request_irq(struct qlcnic_adapter *adapter)
 822 {
 823         irq_handler_t handler;
 824         struct qlcnic_host_sds_ring *sds_ring;
 825         int err, ring;
 826
 827         unsigned long flags = 0;
 828         struct net_device *netdev = adapter->netdev;
 829         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 830
 831         if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
 832                 handler = qlcnic_tmp_intr;
 833                 if (!QLCNIC_IS_MSI_FAMILY(adapter))
 834                         flags |= IRQF_SHARED;
 835
 836         } else {
 837                 if (adapter->flags & QLCNIC_MSIX_ENABLED)
 838                         handler = qlcnic_msix_intr;
 839                 else if (adapter->flags & QLCNIC_MSI_ENABLED)
 840                         handler = qlcnic_msi_intr;
 841                 else {
 842                         flags |= IRQF_SHARED;
 843                         handler = qlcnic_intr;
 844                 }
 845         }
 846         adapter->irq = netdev->irq;
 847
 848         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 849                 sds_ring = &recv_ctx->sds_rings[ring];
 850                 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
 851                 err = request_irq(sds_ring->irq, handler,
 852                                   flags, sds_ring->name, sds_ring);
 853                 if (err)
 854                         return err;
 855         }
 856
 857         return 0;
 858 }
 859
 860 static void
 861 qlcnic_free_irq(struct qlcnic_adapter *adapter)
 862 {
 863         int ring;
 864         struct qlcnic_host_sds_ring *sds_ring;
 865
 866         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 867
 868         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 869                 sds_ring = &recv_ctx->sds_rings[ring];
 870                 free_irq(sds_ring->irq, sds_ring);
 871         }
 872 }
 873
 874 static void
 875 qlcnic_init_coalesce_defaults(struct qlcnic_adapter *adapter)
 876 {
 877         adapter->coal.flags = QLCNIC_INTR_DEFAULT;
 878         adapter->coal.normal.data.rx_time_us =
 879                 QLCNIC_DEFAULT_INTR_COALESCE_RX_TIME_US;
 880         adapter->coal.normal.data.rx_packets =
 881                 QLCNIC_DEFAULT_INTR_COALESCE_RX_PACKETS;
 882         adapter->coal.normal.data.tx_time_us =
 883                 QLCNIC_DEFAULT_INTR_COALESCE_TX_TIME_US;
 884         adapter->coal.normal.data.tx_packets =
 885                 QLCNIC_DEFAULT_INTR_COALESCE_TX_PACKETS;
 886 }
 887
 888 static int
 889 __qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
 890 {
 891         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
 892                 return -EIO;
 893
 894         qlcnic_set_multi(netdev);
 895         qlcnic_fw_cmd_set_mtu(adapter, netdev->mtu);
 896
 897         adapter->ahw.linkup = 0;
 898
 899         if (adapter->max_sds_rings > 1)
 900                 qlcnic_config_rss(adapter, 1);
 901
 902         qlcnic_config_intr_coalesce(adapter);
 903
 904         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
 905                 qlcnic_config_hw_lro(adapter, QLCNIC_LRO_ENABLED);
 906
 907         qlcnic_napi_enable(adapter);
 908
 909         qlcnic_linkevent_request(adapter, 1);
 910
 911         set_bit(__QLCNIC_DEV_UP, &adapter->state);
 912         return 0;
 913 }
 914
 915 /* Usage: During resume and firmware recovery module.*/
 916
 917 static int
 918 qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
 919 {
 920         int err = 0;
 921
 922         rtnl_lock();
 923         if (netif_running(netdev))
 924                 err = __qlcnic_up(adapter, netdev);
 925         rtnl_unlock();
 926
 927         return err;
 928 }
 929
 930 static void
 931 __qlcnic_down(struct qlcnic_adapter *adapter, struct net_device *netdev)
 932 {
 933         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
 934                 return;
 935
 936         if (!test_and_clear_bit(__QLCNIC_DEV_UP, &adapter->state))
 937                 return;
 938
 939         smp_mb();
 940         spin_lock(&adapter->tx_clean_lock);
 941         netif_carrier_off(netdev);
 942         netif_tx_disable(netdev);
 943
 944         qlcnic_free_mac_list(adapter);
 945
 946         qlcnic_nic_set_promisc(adapter, QLCNIC_NIU_NON_PROMISC_MODE);
 947
 948         qlcnic_napi_disable(adapter);
 949
 950         qlcnic_release_tx_buffers(adapter);
 951         spin_unlock(&adapter->tx_clean_lock);
 952 }
 953
 954 /* Usage: During suspend and firmware recovery module */
 955
 956 static void
 957 qlcnic_down(struct qlcnic_adapter *adapter, struct net_device *netdev)
 958 {
 959         rtnl_lock();
 960         if (netif_running(netdev))
 961                 __qlcnic_down(adapter, netdev);
 962         rtnl_unlock();
 963
 964 }
 965
 966 static int
 967 qlcnic_attach(struct qlcnic_adapter *adapter)
 968 {
 969         struct net_device *netdev = adapter->netdev;
 970         struct pci_dev *pdev = adapter->pdev;
 971         int err, ring;
 972         struct qlcnic_host_rds_ring *rds_ring;
 973
 974         if (adapter->is_up == QLCNIC_ADAPTER_UP_MAGIC)
 975                 return 0;
 976
 977         err = qlcnic_init_firmware(adapter);
 978         if (err)
 979                 return err;
 980
 981         err = qlcnic_napi_add(adapter, netdev);
 982         if (err)
 983                 return err;
 984
 985         err = qlcnic_alloc_sw_resources(adapter);
 986         if (err) {
 987                 dev_err(&pdev->dev, "Error in setting sw resources\n");
 988                 return err;
 989         }
 990
 991         err = qlcnic_alloc_hw_resources(adapter);
 992         if (err) {
 993                 dev_err(&pdev->dev, "Error in setting hw resources\n");
 994                 goto err_out_free_sw;
 995         }
 996
 997
 998         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 999                 rds_ring = &adapter->recv_ctx.rds_rings[ring];
1000                 qlcnic_post_rx_buffers(adapter, ring, rds_ring);
1001         }
1002
1003         err = qlcnic_request_irq(adapter);
1004         if (err) {
1005                 dev_err(&pdev->dev, "failed to setup interrupt\n");
1006                 goto err_out_free_rxbuf;
1007         }
1008
1009         qlcnic_init_coalesce_defaults(adapter);
1010
1011         qlcnic_create_sysfs_entries(adapter);
1012
1013         adapter->is_up = QLCNIC_ADAPTER_UP_MAGIC;
1014         return 0;
1015
1016 err_out_free_rxbuf:
1017         qlcnic_release_rx_buffers(adapter);
1018         qlcnic_free_hw_resources(adapter);
1019 err_out_free_sw:
1020         qlcnic_free_sw_resources(adapter);
1021         return err;
1022 }
1023
1024 static void
1025 qlcnic_detach(struct qlcnic_adapter *adapter)
1026 {
1027         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
1028                 return;
1029
1030         qlcnic_remove_sysfs_entries(adapter);
1031
1032         qlcnic_free_hw_resources(adapter);
1033         qlcnic_release_rx_buffers(adapter);
1034         qlcnic_free_irq(adapter);
1035         qlcnic_napi_del(adapter);
1036         qlcnic_free_sw_resources(adapter);
1037
1038         adapter->is_up = 0;
1039 }
1040
1041 void qlcnic_diag_free_res(struct net_device *netdev, int max_sds_rings)
1042 {
1043         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1044         struct qlcnic_host_sds_ring *sds_ring;
1045         int ring;
1046
1047         clear_bit(__QLCNIC_DEV_UP, &adapter->state);
1048         if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
1049                 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1050                         sds_ring = &adapter->recv_ctx.sds_rings[ring];
1051                         qlcnic_disable_int(sds_ring);
1052                 }
1053         }
1054
1055         qlcnic_detach(adapter);
1056
1057         adapter->diag_test = 0;
1058         adapter->max_sds_rings = max_sds_rings;
1059
1060         if (qlcnic_attach(adapter))
1061                 goto out;
1062
1063         if (netif_running(netdev))
1064                 __qlcnic_up(adapter, netdev);
1065 out:
1066         netif_device_attach(netdev);
1067 }
1068
1069 int qlcnic_diag_alloc_res(struct net_device *netdev, int test)
1070 {
1071         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1072         struct qlcnic_host_sds_ring *sds_ring;
1073         int ring;
1074         int ret;
1075
1076         netif_device_detach(netdev);
1077
1078         if (netif_running(netdev))
1079                 __qlcnic_down(adapter, netdev);
1080
1081         qlcnic_detach(adapter);
1082
1083         adapter->max_sds_rings = 1;
1084         adapter->diag_test = test;
1085
1086         ret = qlcnic_attach(adapter);
1087         if (ret) {
1088                 netif_device_attach(netdev);
1089                 return ret;
1090         }
1091
1092         if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
1093                 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1094                         sds_ring = &adapter->recv_ctx.sds_rings[ring];
1095                         qlcnic_enable_int(sds_ring);
1096                 }
1097         }
1098         set_bit(__QLCNIC_DEV_UP, &adapter->state);
1099
1100         return 0;
1101 }
1102
1103 int
1104 qlcnic_reset_context(struct qlcnic_adapter *adapter)
1105 {
1106         int err = 0;
1107         struct net_device *netdev = adapter->netdev;
1108
1109         if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
1110                 return -EBUSY;
1111
1112         if (adapter->is_up == QLCNIC_ADAPTER_UP_MAGIC) {
1113
1114                 netif_device_detach(netdev);
1115
1116                 if (netif_running(netdev))
1117                         __qlcnic_down(adapter, netdev);
1118
1119                 qlcnic_detach(adapter);
1120
1121                 if (netif_running(netdev)) {
1122                         err = qlcnic_attach(adapter);
1123                         if (!err)
1124                                 __qlcnic_up(adapter, netdev);
1125                 }
1126
1127                 netif_device_attach(netdev);
1128         }
1129
1130         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1131         return err;
1132 }
1133
1134 static int
1135 qlcnic_setup_netdev(struct qlcnic_adapter *adapter,
1136                 struct net_device *netdev, u8 pci_using_dac)
1137 {
1138         int err;
1139         struct pci_dev *pdev = adapter->pdev;
1140
1141         adapter->rx_csum = 1;
1142         adapter->mc_enabled = 0;
1143         adapter->max_mc_count = 38;
1144
1145         netdev->netdev_ops         = &qlcnic_netdev_ops;
1146         netdev->watchdog_timeo     = 2*HZ;
1147
1148         qlcnic_change_mtu(netdev, netdev->mtu);
1149
1150         SET_ETHTOOL_OPS(netdev, &qlcnic_ethtool_ops);
1151
1152         netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM |
1153                 NETIF_F_IPV6_CSUM | NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6);
1154
1155         netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM |
1156                 NETIF_F_IPV6_CSUM | NETIF_F_TSO | NETIF_F_TSO6);
1157
1158         if (pci_using_dac) {
1159                 netdev->features |= NETIF_F_HIGHDMA;
1160                 netdev->vlan_features |= NETIF_F_HIGHDMA;
1161         }
1162
1163         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_FVLANTX)
1164                 netdev->features |= (NETIF_F_HW_VLAN_TX);
1165
1166         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
1167                 netdev->features |= NETIF_F_LRO;
1168
1169         netdev->irq = adapter->msix_entries[0].vector;
1170
1171         INIT_WORK(&adapter->tx_timeout_task, qlcnic_tx_timeout_task);
1172
1173         if (qlcnic_read_mac_addr(adapter))
1174                 dev_warn(&pdev->dev, "failed to read mac addr\n");
1175
1176         netif_carrier_off(netdev);
1177         netif_stop_queue(netdev);
1178
1179         err = register_netdev(netdev);
1180         if (err) {
1181                 dev_err(&pdev->dev, "failed to register net device\n");
1182                 return err;
1183         }
1184
1185         return 0;
1186 }
1187
1188 static int qlcnic_set_dma_mask(struct pci_dev *pdev, u8 *pci_using_dac)
1189 {
1190         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) &&
1191                         !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
1192                 *pci_using_dac = 1;
1193         else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) &&
1194                         !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
1195                 *pci_using_dac = 0;
1196         else {
1197                 dev_err(&pdev->dev, "Unable to set DMA mask, aborting\n");
1198                 return -EIO;
1199         }
1200
1201         return 0;
1202 }
1203
1204 static int __devinit
1205 qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1206 {
1207         struct net_device *netdev = NULL;
1208         struct qlcnic_adapter *adapter = NULL;
1209         int err;
1210         uint8_t revision_id;
1211         uint8_t pci_using_dac;
1212
1213         err = pci_enable_device(pdev);
1214         if (err)
1215                 return err;
1216
1217         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1218                 err = -ENODEV;
1219                 goto err_out_disable_pdev;
1220         }
1221
1222         err = qlcnic_set_dma_mask(pdev, &pci_using_dac);
1223         if (err)
1224                 goto err_out_disable_pdev;
1225
1226         err = pci_request_regions(pdev, qlcnic_driver_name);
1227         if (err)
1228                 goto err_out_disable_pdev;
1229
1230         pci_set_master(pdev);
1231
1232         netdev = alloc_etherdev(sizeof(struct qlcnic_adapter));
1233         if (!netdev) {
1234                 dev_err(&pdev->dev, "failed to allocate net_device\n");
1235                 err = -ENOMEM;
1236                 goto err_out_free_res;
1237         }
1238
1239         SET_NETDEV_DEV(netdev, &pdev->dev);
1240
1241         adapter = netdev_priv(netdev);
1242         adapter->netdev  = netdev;
1243         adapter->pdev    = pdev;
1244         adapter->dev_rst_time = jiffies;
1245
1246         revision_id = pdev->revision;
1247         adapter->ahw.revision_id = revision_id;
1248
1249         rwlock_init(&adapter->ahw.crb_lock);
1250         mutex_init(&adapter->ahw.mem_lock);
1251
1252         spin_lock_init(&adapter->tx_clean_lock);
1253         INIT_LIST_HEAD(&adapter->mac_list);
1254
1255         err = qlcnic_setup_pci_map(adapter);
1256         if (err)
1257                 goto err_out_free_netdev;
1258
1259         /* This will be reset for mezz cards  */
1260         adapter->portnum = adapter->ahw.pci_func;
1261
1262         err = qlcnic_get_board_info(adapter);
1263         if (err) {
1264                 dev_err(&pdev->dev, "Error getting board config info.\n");
1265                 goto err_out_iounmap;
1266         }
1267
1268         if (qlcnic_read_mac_addr(adapter))
1269                 dev_warn(&pdev->dev, "failed to read mac addr\n");
1270
1271         if (qlcnic_setup_idc_param(adapter))
1272                 goto err_out_iounmap;
1273
1274         err = adapter->nic_ops->start_firmware(adapter);
1275         if (err) {
1276                 dev_err(&pdev->dev, "Loading fw failed.Please Reboot\n");
1277                 goto err_out_decr_ref;
1278         }
1279
1280         qlcnic_clear_stats(adapter);
1281
1282         qlcnic_setup_intr(adapter);
1283
1284         err = qlcnic_setup_netdev(adapter, netdev, pci_using_dac);
1285         if (err)
1286                 goto err_out_disable_msi;
1287
1288         pci_set_drvdata(pdev, adapter);
1289
1290         qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
1291
1292         switch (adapter->ahw.port_type) {
1293         case QLCNIC_GBE:
1294                 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1295                                 adapter->netdev->name);
1296                 break;
1297         case QLCNIC_XGBE:
1298                 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1299                                 adapter->netdev->name);
1300                 break;
1301         }
1302
1303         qlcnic_create_diag_entries(adapter);
1304
1305         return 0;
1306
1307 err_out_disable_msi:
1308         qlcnic_teardown_intr(adapter);
1309
1310 err_out_decr_ref:
1311         qlcnic_clr_all_drv_state(adapter);
1312
1313 err_out_iounmap:
1314         qlcnic_cleanup_pci_map(adapter);
1315
1316 err_out_free_netdev:
1317         free_netdev(netdev);
1318
1319 err_out_free_res:
1320         pci_release_regions(pdev);
1321
1322 err_out_disable_pdev:
1323         pci_set_drvdata(pdev, NULL);
1324         pci_disable_device(pdev);
1325         return err;
1326 }
1327
1328 static void __devexit qlcnic_remove(struct pci_dev *pdev)
1329 {
1330         struct qlcnic_adapter *adapter;
1331         struct net_device *netdev;
1332
1333         adapter = pci_get_drvdata(pdev);
1334         if (adapter == NULL)
1335                 return;
1336
1337         netdev = adapter->netdev;
1338
1339         qlcnic_cancel_fw_work(adapter);
1340
1341         unregister_netdev(netdev);
1342
1343         cancel_work_sync(&adapter->tx_timeout_task);
1344
1345         qlcnic_detach(adapter);
1346
1347         if (adapter->npars != NULL)
1348                 kfree(adapter->npars);
1349         if (adapter->eswitch != NULL)
1350                 kfree(adapter->eswitch);
1351
1352         qlcnic_clr_all_drv_state(adapter);
1353
1354         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1355
1356         qlcnic_teardown_intr(adapter);
1357
1358         qlcnic_remove_diag_entries(adapter);
1359
1360         qlcnic_cleanup_pci_map(adapter);
1361
1362         qlcnic_release_firmware(adapter);
1363
1364         pci_release_regions(pdev);
1365         pci_disable_device(pdev);
1366         pci_set_drvdata(pdev, NULL);
1367
1368         free_netdev(netdev);
1369 }
1370 static int __qlcnic_shutdown(struct pci_dev *pdev)
1371 {
1372         struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
1373         struct net_device *netdev = adapter->netdev;
1374         int retval;
1375
1376         netif_device_detach(netdev);
1377
1378         qlcnic_cancel_fw_work(adapter);
1379
1380         if (netif_running(netdev))
1381                 qlcnic_down(adapter, netdev);
1382
1383         cancel_work_sync(&adapter->tx_timeout_task);
1384
1385         qlcnic_detach(adapter);
1386
1387         qlcnic_clr_all_drv_state(adapter);
1388
1389         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1390
1391         retval = pci_save_state(pdev);
1392         if (retval)
1393                 return retval;
1394
1395         if (qlcnic_wol_supported(adapter)) {
1396                 pci_enable_wake(pdev, PCI_D3cold, 1);
1397                 pci_enable_wake(pdev, PCI_D3hot, 1);
1398         }
1399
1400         return 0;
1401 }
1402
1403 static void qlcnic_shutdown(struct pci_dev *pdev)
1404 {
1405         if (__qlcnic_shutdown(pdev))
1406                 return;
1407
1408         pci_disable_device(pdev);
1409 }
1410
1411 #ifdef CONFIG_PM
1412 static int
1413 qlcnic_suspend(struct pci_dev *pdev, pm_message_t state)
1414 {
1415         int retval;
1416
1417         retval = __qlcnic_shutdown(pdev);
1418         if (retval)
1419                 return retval;
1420
1421         pci_set_power_state(pdev, pci_choose_state(pdev, state));
1422         return 0;
1423 }
1424
1425 static int
1426 qlcnic_resume(struct pci_dev *pdev)
1427 {
1428         struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
1429         struct net_device *netdev = adapter->netdev;
1430         int err;
1431
1432         err = pci_enable_device(pdev);
1433         if (err)
1434                 return err;
1435
1436         pci_set_power_state(pdev, PCI_D0);
1437         pci_set_master(pdev);
1438         pci_restore_state(pdev);
1439
1440         err = adapter->nic_ops->start_firmware(adapter);
1441         if (err) {
1442                 dev_err(&pdev->dev, "failed to start firmware\n");
1443                 return err;
1444         }
1445
1446         if (netif_running(netdev)) {
1447                 err = qlcnic_attach(adapter);
1448                 if (err)
1449                         goto err_out;
1450
1451                 err = qlcnic_up(adapter, netdev);
1452                 if (err)
1453                         goto err_out_detach;
1454
1455
1456                 qlcnic_config_indev_addr(netdev, NETDEV_UP);
1457         }
1458
1459         netif_device_attach(netdev);
1460         qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
1461         return 0;
1462
1463 err_out_detach:
1464         qlcnic_detach(adapter);
1465 err_out:
1466         qlcnic_clr_all_drv_state(adapter);
1467         netif_device_attach(netdev);
1468         return err;
1469 }
1470 #endif
1471
1472 static int qlcnic_open(struct net_device *netdev)
1473 {
1474         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1475         int err;
1476
1477         if (adapter->driver_mismatch)
1478                 return -EIO;
1479
1480         err = qlcnic_attach(adapter);
1481         if (err)
1482                 return err;
1483
1484         err = __qlcnic_up(adapter, netdev);
1485         if (err)
1486                 goto err_out;
1487
1488         netif_start_queue(netdev);
1489
1490         return 0;
1491
1492 err_out:
1493         qlcnic_detach(adapter);
1494         return err;
1495 }
1496
1497 /*
1498  * qlcnic_close - Disables a network interface entry point
1499  */
1500 static int qlcnic_close(struct net_device *netdev)
1501 {
1502         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1503
1504         __qlcnic_down(adapter, netdev);
1505         return 0;
1506 }
1507
1508 static void
1509 qlcnic_tso_check(struct net_device *netdev,
1510                 struct qlcnic_host_tx_ring *tx_ring,
1511                 struct cmd_desc_type0 *first_desc,
1512                 struct sk_buff *skb)
1513 {
1514         u8 opcode = TX_ETHER_PKT;
1515         __be16 protocol = skb->protocol;
1516         u16 flags = 0, vid = 0;
1517         int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1518         struct cmd_desc_type0 *hwdesc;
1519         struct vlan_ethhdr *vh;
1520         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1521         u32 producer = tx_ring->producer;
1522
1523         if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1524
1525                 vh = (struct vlan_ethhdr *)skb->data;
1526                 protocol = vh->h_vlan_encapsulated_proto;
1527                 flags = FLAGS_VLAN_TAGGED;
1528
1529         } else if (vlan_tx_tag_present(skb)) {
1530
1531                 flags = FLAGS_VLAN_OOB;
1532                 vid = vlan_tx_tag_get(skb);
1533                 qlcnic_set_tx_vlan_tci(first_desc, vid);
1534                 vlan_oob = 1;
1535         }
1536
1537         if (*(skb->data) & BIT_0) {
1538                 flags |= BIT_0;
1539                 memcpy(&first_desc->eth_addr, skb->data, ETH_ALEN);
1540         }
1541
1542         if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1543                         skb_shinfo(skb)->gso_size > 0) {
1544
1545                 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1546
1547                 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1548                 first_desc->total_hdr_length = hdr_len;
1549                 if (vlan_oob) {
1550                         first_desc->total_hdr_length += VLAN_HLEN;
1551                         first_desc->tcp_hdr_offset = VLAN_HLEN;
1552                         first_desc->ip_hdr_offset = VLAN_HLEN;
1553                         /* Only in case of TSO on vlan device */
1554                         flags |= FLAGS_VLAN_TAGGED;
1555                 }
1556
1557                 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1558                                 TX_TCP_LSO6 : TX_TCP_LSO;
1559                 tso = 1;
1560
1561         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1562                 u8 l4proto;
1563
1564                 if (protocol == cpu_to_be16(ETH_P_IP)) {
1565                         l4proto = ip_hdr(skb)->protocol;
1566
1567                         if (l4proto == IPPROTO_TCP)
1568                                 opcode = TX_TCP_PKT;
1569                         else if (l4proto == IPPROTO_UDP)
1570                                 opcode = TX_UDP_PKT;
1571                 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1572                         l4proto = ipv6_hdr(skb)->nexthdr;
1573
1574                         if (l4proto == IPPROTO_TCP)
1575                                 opcode = TX_TCPV6_PKT;
1576                         else if (l4proto == IPPROTO_UDP)
1577                                 opcode = TX_UDPV6_PKT;
1578                 }
1579         }
1580
1581         first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1582         first_desc->ip_hdr_offset += skb_network_offset(skb);
1583         qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
1584
1585         if (!tso)
1586                 return;
1587
1588         /* For LSO, we need to copy the MAC/IP/TCP headers into
1589          * the descriptor ring
1590          */
1591         copied = 0;
1592         offset = 2;
1593
1594         if (vlan_oob) {
1595                 /* Create a TSO vlan header template for firmware */
1596
1597                 hwdesc = &tx_ring->desc_head[producer];
1598                 tx_ring->cmd_buf_arr[producer].skb = NULL;
1599
1600                 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1601                                 hdr_len + VLAN_HLEN);
1602
1603                 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1604                 skb_copy_from_linear_data(skb, vh, 12);
1605                 vh->h_vlan_proto = htons(ETH_P_8021Q);
1606                 vh->h_vlan_TCI = htons(vid);
1607                 skb_copy_from_linear_data_offset(skb, 12,
1608                                 (char *)vh + 16, copy_len - 16);
1609
1610                 copied = copy_len - VLAN_HLEN;
1611                 offset = 0;
1612
1613                 producer = get_next_index(producer, tx_ring->num_desc);
1614         }
1615
1616         while (copied < hdr_len) {
1617
1618                 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1619                                 (hdr_len - copied));
1620
1621                 hwdesc = &tx_ring->desc_head[producer];
1622                 tx_ring->cmd_buf_arr[producer].skb = NULL;
1623
1624                 skb_copy_from_linear_data_offset(skb, copied,
1625                                  (char *)hwdesc + offset, copy_len);
1626
1627                 copied += copy_len;
1628                 offset = 0;
1629
1630                 producer = get_next_index(producer, tx_ring->num_desc);
1631         }
1632
1633         tx_ring->producer = producer;
1634         barrier();
1635         adapter->stats.lso_frames++;
1636 }
1637
1638 static int
1639 qlcnic_map_tx_skb(struct pci_dev *pdev,
1640                 struct sk_buff *skb, struct qlcnic_cmd_buffer *pbuf)
1641 {
1642         struct qlcnic_skb_frag *nf;
1643         struct skb_frag_struct *frag;
1644         int i, nr_frags;
1645         dma_addr_t map;
1646
1647         nr_frags = skb_shinfo(skb)->nr_frags;
1648         nf = &pbuf->frag_array[0];
1649
1650         map = pci_map_single(pdev, skb->data,
1651                         skb_headlen(skb), PCI_DMA_TODEVICE);
1652         if (pci_dma_mapping_error(pdev, map))
1653                 goto out_err;
1654
1655         nf->dma = map;
1656         nf->length = skb_headlen(skb);
1657
1658         for (i = 0; i < nr_frags; i++) {
1659                 frag = &skb_shinfo(skb)->frags[i];
1660                 nf = &pbuf->frag_array[i+1];
1661
1662                 map = pci_map_page(pdev, frag->page, frag->page_offset,
1663                                 frag->size, PCI_DMA_TODEVICE);
1664                 if (pci_dma_mapping_error(pdev, map))
1665                         goto unwind;
1666
1667                 nf->dma = map;
1668                 nf->length = frag->size;
1669         }
1670
1671         return 0;
1672
1673 unwind:
1674         while (--i >= 0) {
1675                 nf = &pbuf->frag_array[i+1];
1676                 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
1677         }
1678
1679         nf = &pbuf->frag_array[0];
1680         pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1681
1682 out_err:
1683         return -ENOMEM;
1684 }
1685
1686 static inline void
1687 qlcnic_clear_cmddesc(u64 *desc)
1688 {
1689         desc[0] = 0ULL;
1690         desc[2] = 0ULL;
1691 }
1692
1693 netdev_tx_t
1694 qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1695 {
1696         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1697         struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
1698         struct qlcnic_cmd_buffer *pbuf;
1699         struct qlcnic_skb_frag *buffrag;
1700         struct cmd_desc_type0 *hwdesc, *first_desc;
1701         struct pci_dev *pdev;
1702         int i, k;
1703
1704         u32 producer;
1705         int frag_count, no_of_desc;
1706         u32 num_txd = tx_ring->num_desc;
1707
1708         if (!test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
1709                 netif_stop_queue(netdev);
1710                 return NETDEV_TX_BUSY;
1711         }
1712
1713         frag_count = skb_shinfo(skb)->nr_frags + 1;
1714
1715         /* 4 fragments per cmd des */
1716         no_of_desc = (frag_count + 3) >> 2;
1717
1718         if (unlikely(no_of_desc + 2 > qlcnic_tx_avail(tx_ring))) {
1719                 netif_stop_queue(netdev);
1720                 adapter->stats.xmit_off++;
1721                 return NETDEV_TX_BUSY;
1722         }
1723
1724         producer = tx_ring->producer;
1725         pbuf = &tx_ring->cmd_buf_arr[producer];
1726
1727         pdev = adapter->pdev;
1728
1729         if (qlcnic_map_tx_skb(pdev, skb, pbuf)) {
1730                 adapter->stats.tx_dma_map_error++;
1731                 goto drop_packet;
1732         }
1733
1734         pbuf->skb = skb;
1735         pbuf->frag_count = frag_count;
1736
1737         first_desc = hwdesc = &tx_ring->desc_head[producer];
1738         qlcnic_clear_cmddesc((u64 *)hwdesc);
1739
1740         qlcnic_set_tx_frags_len(first_desc, frag_count, skb->len);
1741         qlcnic_set_tx_port(first_desc, adapter->portnum);
1742
1743         for (i = 0; i < frag_count; i++) {
1744
1745                 k = i % 4;
1746
1747                 if ((k == 0) && (i > 0)) {
1748                         /* move to next desc.*/
1749                         producer = get_next_index(producer, num_txd);
1750                         hwdesc = &tx_ring->desc_head[producer];
1751                         qlcnic_clear_cmddesc((u64 *)hwdesc);
1752                         tx_ring->cmd_buf_arr[producer].skb = NULL;
1753                 }
1754
1755                 buffrag = &pbuf->frag_array[i];
1756
1757                 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
1758                 switch (k) {
1759                 case 0:
1760                         hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1761                         break;
1762                 case 1:
1763                         hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
1764                         break;
1765                 case 2:
1766                         hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
1767                         break;
1768                 case 3:
1769                         hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
1770                         break;
1771                 }
1772         }
1773
1774         tx_ring->producer = get_next_index(producer, num_txd);
1775
1776         qlcnic_tso_check(netdev, tx_ring, first_desc, skb);
1777
1778         qlcnic_update_cmd_producer(adapter, tx_ring);
1779
1780         adapter->stats.txbytes += skb->len;
1781         adapter->stats.xmitcalled++;
1782
1783         return NETDEV_TX_OK;
1784
1785 drop_packet:
1786         adapter->stats.txdropped++;
1787         dev_kfree_skb_any(skb);
1788         return NETDEV_TX_OK;
1789 }
1790
1791 static int qlcnic_check_temp(struct qlcnic_adapter *adapter)
1792 {
1793         struct net_device *netdev = adapter->netdev;
1794         u32 temp, temp_state, temp_val;
1795         int rv = 0;
1796
1797         temp = QLCRD32(adapter, CRB_TEMP_STATE);
1798
1799         temp_state = qlcnic_get_temp_state(temp);
1800         temp_val = qlcnic_get_temp_val(temp);
1801
1802         if (temp_state == QLCNIC_TEMP_PANIC) {
1803                 dev_err(&netdev->dev,
1804                        "Device temperature %d degrees C exceeds"
1805                        " maximum allowed. Hardware has been shut down.\n",
1806                        temp_val);
1807                 rv = 1;
1808         } else if (temp_state == QLCNIC_TEMP_WARN) {
1809                 if (adapter->temp == QLCNIC_TEMP_NORMAL) {
1810                         dev_err(&netdev->dev,
1811                                "Device temperature %d degrees C "
1812                                "exceeds operating range."
1813                                " Immediate action needed.\n",
1814                                temp_val);
1815                 }
1816         } else {
1817                 if (adapter->temp == QLCNIC_TEMP_WARN) {
1818                         dev_info(&netdev->dev,
1819                                "Device temperature is now %d degrees C"
1820                                " in normal range.\n", temp_val);
1821                 }
1822         }
1823         adapter->temp = temp_state;
1824         return rv;
1825 }
1826
1827 void qlcnic_advert_link_change(struct qlcnic_adapter *adapter, int linkup)
1828 {
1829         struct net_device *netdev = adapter->netdev;
1830
1831         if (adapter->ahw.linkup && !linkup) {
1832                 dev_info(&netdev->dev, "NIC Link is down\n");
1833                 adapter->ahw.linkup = 0;
1834                 if (netif_running(netdev)) {
1835                         netif_carrier_off(netdev);
1836                         netif_stop_queue(netdev);
1837                 }
1838         } else if (!adapter->ahw.linkup && linkup) {
1839                 dev_info(&netdev->dev, "NIC Link is up\n");
1840                 adapter->ahw.linkup = 1;
1841                 if (netif_running(netdev)) {
1842                         netif_carrier_on(netdev);
1843                         netif_wake_queue(netdev);
1844                 }
1845         }
1846 }
1847
1848 static void qlcnic_tx_timeout(struct net_device *netdev)
1849 {
1850         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1851
1852         if (test_bit(__QLCNIC_RESETTING, &adapter->state))
1853                 return;
1854
1855         dev_err(&netdev->dev, "transmit timeout, resetting.\n");
1856         schedule_work(&adapter->tx_timeout_task);
1857 }
1858
1859 static void qlcnic_tx_timeout_task(struct work_struct *work)
1860 {
1861         struct qlcnic_adapter *adapter =
1862                 container_of(work, struct qlcnic_adapter, tx_timeout_task);
1863
1864         if (!netif_running(adapter->netdev))
1865                 return;
1866
1867         if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
1868                 return;
1869
1870         if (++adapter->tx_timeo_cnt >= QLCNIC_MAX_TX_TIMEOUTS)
1871                 goto request_reset;
1872
1873         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1874         if (!qlcnic_reset_context(adapter)) {
1875                 adapter->netdev->trans_start = jiffies;
1876                 return;
1877
1878                 /* context reset failed, fall through for fw reset */
1879         }
1880
1881 request_reset:
1882         adapter->need_fw_reset = 1;
1883         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1884         QLCDB(adapter, DRV, "Resetting adapter\n");
1885 }
1886
1887 static struct net_device_stats *qlcnic_get_stats(struct net_device *netdev)
1888 {
1889         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1890         struct net_device_stats *stats = &netdev->stats;
1891
1892         memset(stats, 0, sizeof(*stats));
1893
1894         stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
1895         stats->tx_packets = adapter->stats.xmitfinished;
1896         stats->rx_bytes = adapter->stats.rxbytes + adapter->stats.lrobytes;
1897         stats->tx_bytes = adapter->stats.txbytes;
1898         stats->rx_dropped = adapter->stats.rxdropped;
1899         stats->tx_dropped = adapter->stats.txdropped;
1900
1901         return stats;
1902 }
1903
1904 static irqreturn_t qlcnic_clear_legacy_intr(struct qlcnic_adapter *adapter)
1905 {
1906         u32 status;
1907
1908         status = readl(adapter->isr_int_vec);
1909
1910         if (!(status & adapter->int_vec_bit))
1911                 return IRQ_NONE;
1912
1913         /* check interrupt state machine, to be sure */
1914         status = readl(adapter->crb_int_state_reg);
1915         if (!ISR_LEGACY_INT_TRIGGERED(status))
1916                 return IRQ_NONE;
1917
1918         writel(0xffffffff, adapter->tgt_status_reg);
1919         /* read twice to ensure write is flushed */
1920         readl(adapter->isr_int_vec);
1921         readl(adapter->isr_int_vec);
1922
1923         return IRQ_HANDLED;
1924 }
1925
1926 static irqreturn_t qlcnic_tmp_intr(int irq, void *data)
1927 {
1928         struct qlcnic_host_sds_ring *sds_ring = data;
1929         struct qlcnic_adapter *adapter = sds_ring->adapter;
1930
1931         if (adapter->flags & QLCNIC_MSIX_ENABLED)
1932                 goto done;
1933         else if (adapter->flags & QLCNIC_MSI_ENABLED) {
1934                 writel(0xffffffff, adapter->tgt_status_reg);
1935                 goto done;
1936         }
1937
1938         if (qlcnic_clear_legacy_intr(adapter) == IRQ_NONE)
1939                 return IRQ_NONE;
1940
1941 done:
1942         adapter->diag_cnt++;
1943         qlcnic_enable_int(sds_ring);
1944         return IRQ_HANDLED;
1945 }
1946
1947 static irqreturn_t qlcnic_intr(int irq, void *data)
1948 {
1949         struct qlcnic_host_sds_ring *sds_ring = data;
1950         struct qlcnic_adapter *adapter = sds_ring->adapter;
1951
1952         if (qlcnic_clear_legacy_intr(adapter) == IRQ_NONE)
1953                 return IRQ_NONE;
1954
1955         napi_schedule(&sds_ring->napi);
1956
1957         return IRQ_HANDLED;
1958 }
1959
1960 static irqreturn_t qlcnic_msi_intr(int irq, void *data)
1961 {
1962         struct qlcnic_host_sds_ring *sds_ring = data;
1963         struct qlcnic_adapter *adapter = sds_ring->adapter;
1964
1965         /* clear interrupt */
1966         writel(0xffffffff, adapter->tgt_status_reg);
1967
1968         napi_schedule(&sds_ring->napi);
1969         return IRQ_HANDLED;
1970 }
1971
1972 static irqreturn_t qlcnic_msix_intr(int irq, void *data)
1973 {
1974         struct qlcnic_host_sds_ring *sds_ring = data;
1975
1976         napi_schedule(&sds_ring->napi);
1977         return IRQ_HANDLED;
1978 }
1979
1980 static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter)
1981 {
1982         u32 sw_consumer, hw_consumer;
1983         int count = 0, i;
1984         struct qlcnic_cmd_buffer *buffer;
1985         struct pci_dev *pdev = adapter->pdev;
1986         struct net_device *netdev = adapter->netdev;
1987         struct qlcnic_skb_frag *frag;
1988         int done;
1989         struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
1990
1991         if (!spin_trylock(&adapter->tx_clean_lock))
1992                 return 1;
1993
1994         sw_consumer = tx_ring->sw_consumer;
1995         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1996
1997         while (sw_consumer != hw_consumer) {
1998                 buffer = &tx_ring->cmd_buf_arr[sw_consumer];
1999                 if (buffer->skb) {
2000                         frag = &buffer->frag_array[0];
2001                         pci_unmap_single(pdev, frag->dma, frag->length,
2002                                          PCI_DMA_TODEVICE);
2003                         frag->dma = 0ULL;
2004                         for (i = 1; i < buffer->frag_count; i++) {
2005                                 frag++;
2006                                 pci_unmap_page(pdev, frag->dma, frag->length,
2007                                                PCI_DMA_TODEVICE);
2008                                 frag->dma = 0ULL;
2009                         }
2010
2011                         adapter->stats.xmitfinished++;
2012                         dev_kfree_skb_any(buffer->skb);
2013                         buffer->skb = NULL;
2014                 }
2015
2016                 sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
2017                 if (++count >= MAX_STATUS_HANDLE)
2018                         break;
2019         }
2020
2021         if (count && netif_running(netdev)) {
2022                 tx_ring->sw_consumer = sw_consumer;
2023
2024                 smp_mb();
2025
2026                 if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev)) {
2027                         __netif_tx_lock(tx_ring->txq, smp_processor_id());
2028                         if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) {
2029                                 netif_wake_queue(netdev);
2030                                 adapter->tx_timeo_cnt = 0;
2031                                 adapter->stats.xmit_on++;
2032                         }
2033                         __netif_tx_unlock(tx_ring->txq);
2034                 }
2035         }
2036         /*
2037          * If everything is freed up to consumer then check if the ring is full
2038          * If the ring is full then check if more needs to be freed and
2039          * schedule the call back again.
2040          *
2041          * This happens when there are 2 CPUs. One could be freeing and the
2042          * other filling it. If the ring is full when we get out of here and
2043          * the card has already interrupted the host then the host can miss the
2044          * interrupt.
2045          *
2046          * There is still a possible race condition and the host could miss an
2047          * interrupt. The card has to take care of this.
2048          */
2049         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
2050         done = (sw_consumer == hw_consumer);
2051         spin_unlock(&adapter->tx_clean_lock);
2052
2053         return done;
2054 }
2055
2056 static int qlcnic_poll(struct napi_struct *napi, int budget)
2057 {
2058         struct qlcnic_host_sds_ring *sds_ring =
2059                 container_of(napi, struct qlcnic_host_sds_ring, napi);
2060
2061         struct qlcnic_adapter *adapter = sds_ring->adapter;
2062
2063         int tx_complete;
2064         int work_done;
2065
2066         tx_complete = qlcnic_process_cmd_ring(adapter);
2067
2068         work_done = qlcnic_process_rcv_ring(sds_ring, budget);
2069
2070         if ((work_done < budget) && tx_complete) {
2071                 napi_complete(&sds_ring->napi);
2072                 if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
2073                         qlcnic_enable_int(sds_ring);
2074         }
2075
2076         return work_done;
2077 }
2078
2079 #ifdef CONFIG_NET_POLL_CONTROLLER
2080 static void qlcnic_poll_controller(struct net_device *netdev)
2081 {
2082         struct qlcnic_adapter *adapter = netdev_priv(netdev);
2083         disable_irq(adapter->irq);
2084         qlcnic_intr(adapter->irq, adapter);
2085         enable_irq(adapter->irq);
2086 }
2087 #endif
2088
2089 static void
2090 qlcnic_idc_debug_info(struct qlcnic_adapter *adapter, u8 encoding)
2091 {
2092         u32 val;
2093
2094         val = adapter->portnum & 0xf;
2095         val |= encoding << 7;
2096         val |= (jiffies - adapter->dev_rst_time) << 8;
2097
2098         QLCWR32(adapter, QLCNIC_CRB_DRV_SCRATCH, val);
2099         adapter->dev_rst_time = jiffies;
2100 }
2101
2102 static int
2103 qlcnic_set_drv_state(struct qlcnic_adapter *adapter, u8 state)
2104 {
2105         u32  val;
2106
2107         WARN_ON(state != QLCNIC_DEV_NEED_RESET &&
2108                         state != QLCNIC_DEV_NEED_QUISCENT);
2109
2110         if (qlcnic_api_lock(adapter))
2111                 return -EIO;
2112
2113         val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2114
2115         if (state == QLCNIC_DEV_NEED_RESET)
2116                 QLC_DEV_SET_RST_RDY(val, adapter->portnum);
2117         else if (state == QLCNIC_DEV_NEED_QUISCENT)
2118                 QLC_DEV_SET_QSCNT_RDY(val, adapter->portnum);
2119
2120         QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2121
2122         qlcnic_api_unlock(adapter);
2123
2124         return 0;
2125 }
2126
2127 static int
2128 qlcnic_clr_drv_state(struct qlcnic_adapter *adapter)
2129 {
2130         u32  val;
2131
2132         if (qlcnic_api_lock(adapter))
2133                 return -EBUSY;
2134
2135         val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2136         QLC_DEV_CLR_RST_QSCNT(val, adapter->portnum);
2137         QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2138
2139         qlcnic_api_unlock(adapter);
2140
2141         return 0;
2142 }
2143
2144 static void
2145 qlcnic_clr_all_drv_state(struct qlcnic_adapter *adapter)
2146 {
2147         u32  val;
2148
2149         if (qlcnic_api_lock(adapter))
2150                 goto err;
2151
2152         val = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
2153         QLC_DEV_CLR_REF_CNT(val, adapter->portnum);
2154         QLCWR32(adapter, QLCNIC_CRB_DEV_REF_COUNT, val);
2155
2156         if (!(val & 0x11111111))
2157                 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_COLD);
2158
2159         val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2160         QLC_DEV_CLR_RST_QSCNT(val, adapter->portnum);
2161         QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2162
2163         qlcnic_api_unlock(adapter);
2164 err:
2165         adapter->fw_fail_cnt = 0;
2166         clear_bit(__QLCNIC_START_FW, &adapter->state);
2167         clear_bit(__QLCNIC_RESETTING, &adapter->state);
2168 }
2169
2170 /* Grab api lock, before checking state */
2171 static int
2172 qlcnic_check_drv_state(struct qlcnic_adapter *adapter)
2173 {
2174         int act, state;
2175
2176         state = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2177         act = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
2178
2179         if (((state & 0x11111111) == (act & 0x11111111)) ||
2180                         ((act & 0x11111111) == ((state >> 1) & 0x11111111)))
2181                 return 0;
2182         else
2183                 return 1;
2184 }
2185
2186 static int qlcnic_check_idc_ver(struct qlcnic_adapter *adapter)
2187 {
2188         u32 val = QLCRD32(adapter, QLCNIC_CRB_DRV_IDC_VER);
2189
2190         if (val != QLCNIC_DRV_IDC_VER) {
2191                 dev_warn(&adapter->pdev->dev, "IDC Version mismatch, driver's"
2192                         " idc ver = %x; reqd = %x\n", QLCNIC_DRV_IDC_VER, val);
2193         }
2194
2195         return 0;
2196 }
2197
2198 static int
2199 qlcnic_can_start_firmware(struct qlcnic_adapter *adapter)
2200 {
2201         u32 val, prev_state;
2202         u8 dev_init_timeo = adapter->dev_init_timeo;
2203         u8 portnum = adapter->portnum;
2204         u8 ret;
2205
2206         if (test_and_clear_bit(__QLCNIC_START_FW, &adapter->state))
2207                 return 1;
2208
2209         if (qlcnic_api_lock(adapter))
2210                 return -1;
2211
2212         val = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
2213         if (!(val & (1 << (portnum * 4)))) {
2214                 QLC_DEV_SET_REF_CNT(val, portnum);
2215                 QLCWR32(adapter, QLCNIC_CRB_DEV_REF_COUNT, val);
2216         }
2217
2218         prev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2219         QLCDB(adapter, HW, "Device state = %u\n", prev_state);
2220
2221         switch (prev_state) {
2222         case QLCNIC_DEV_COLD:
2223                 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_INITIALIZING);
2224                 QLCWR32(adapter, QLCNIC_CRB_DRV_IDC_VER, QLCNIC_DRV_IDC_VER);
2225                 qlcnic_idc_debug_info(adapter, 0);
2226                 qlcnic_api_unlock(adapter);
2227                 return 1;
2228
2229         case QLCNIC_DEV_READY:
2230                 ret = qlcnic_check_idc_ver(adapter);
2231                 qlcnic_api_unlock(adapter);
2232                 return ret;
2233
2234         case QLCNIC_DEV_NEED_RESET:
2235                 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2236                 QLC_DEV_SET_RST_RDY(val, portnum);
2237                 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2238                 break;
2239
2240         case QLCNIC_DEV_NEED_QUISCENT:
2241                 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2242                 QLC_DEV_SET_QSCNT_RDY(val, portnum);
2243                 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2244                 break;
2245
2246         case QLCNIC_DEV_FAILED:
2247                 dev_err(&adapter->pdev->dev, "Device in failed state.\n");
2248                 qlcnic_api_unlock(adapter);
2249                 return -1;
2250
2251         case QLCNIC_DEV_INITIALIZING:
2252         case QLCNIC_DEV_QUISCENT:
2253                 break;
2254         }
2255
2256         qlcnic_api_unlock(adapter);
2257
2258         do {
2259                 msleep(1000);
2260                 prev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2261
2262                 if (prev_state == QLCNIC_DEV_QUISCENT)
2263                         continue;
2264         } while ((prev_state != QLCNIC_DEV_READY) && --dev_init_timeo);
2265
2266         if (!dev_init_timeo) {
2267                 dev_err(&adapter->pdev->dev,
2268                         "Waiting for device to initialize timeout\n");
2269                 return -1;
2270         }
2271
2272         if (qlcnic_api_lock(adapter))
2273                 return -1;
2274
2275         val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2276         QLC_DEV_CLR_RST_QSCNT(val, portnum);
2277         QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2278
2279         ret = qlcnic_check_idc_ver(adapter);
2280         qlcnic_api_unlock(adapter);
2281
2282         return ret;
2283 }
2284
2285 static void
2286 qlcnic_fwinit_work(struct work_struct *work)
2287 {
2288         struct qlcnic_adapter *adapter = container_of(work,
2289                         struct qlcnic_adapter, fw_work.work);
2290         u32 dev_state = 0xf, npar_state;
2291
2292         if (qlcnic_api_lock(adapter))
2293                 goto err_ret;
2294
2295         dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2296         if (dev_state ==  QLCNIC_DEV_QUISCENT) {
2297                 qlcnic_api_unlock(adapter);
2298                 qlcnic_schedule_work(adapter, qlcnic_fwinit_work,
2299                                                 FW_POLL_DELAY * 2);
2300                 return;
2301         }
2302
2303         if (adapter->op_mode == QLCNIC_NON_PRIV_FUNC) {
2304                 npar_state = QLCRD32(adapter, QLCNIC_CRB_DEV_NPAR_STATE);
2305                 if (npar_state == QLCNIC_DEV_NPAR_RDY) {
2306                         qlcnic_api_unlock(adapter);
2307                         goto wait_npar;
2308                 } else {
2309                         qlcnic_schedule_work(adapter, qlcnic_fwinit_work,
2310                                 FW_POLL_DELAY);
2311                         qlcnic_api_unlock(adapter);
2312                         return;
2313                 }
2314         }
2315
2316         if (adapter->fw_wait_cnt++ > adapter->reset_ack_timeo) {
2317                 dev_err(&adapter->pdev->dev, "Reset:Failed to get ack %d sec\n",
2318                                         adapter->reset_ack_timeo);
2319                 goto skip_ack_check;
2320         }
2321
2322         if (!qlcnic_check_drv_state(adapter)) {
2323 skip_ack_check:
2324                 dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2325
2326                 if (dev_state == QLCNIC_DEV_NEED_QUISCENT) {
2327                         QLCWR32(adapter, QLCNIC_CRB_DEV_STATE,
2328                                                 QLCNIC_DEV_QUISCENT);
2329                         qlcnic_schedule_work(adapter, qlcnic_fwinit_work,
2330                                                 FW_POLL_DELAY * 2);
2331                         QLCDB(adapter, DRV, "Quiscing the driver\n");
2332                         qlcnic_idc_debug_info(adapter, 0);
2333
2334                         qlcnic_api_unlock(adapter);
2335                         return;
2336                 }
2337
2338                 if (dev_state == QLCNIC_DEV_NEED_RESET) {
2339                         QLCWR32(adapter, QLCNIC_CRB_DEV_STATE,
2340                                                 QLCNIC_DEV_INITIALIZING);
2341                         set_bit(__QLCNIC_START_FW, &adapter->state);
2342                         QLCDB(adapter, DRV, "Restarting fw\n");
2343                         qlcnic_idc_debug_info(adapter, 0);
2344                 }
2345
2346                 qlcnic_api_unlock(adapter);
2347
2348                 if (!adapter->nic_ops->start_firmware(adapter)) {
2349                         qlcnic_schedule_work(adapter, qlcnic_attach_work, 0);
2350                         return;
2351                 }
2352                 goto err_ret;
2353         }
2354
2355         qlcnic_api_unlock(adapter);
2356
2357 wait_npar:
2358         dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2359         QLCDB(adapter, HW, "Func waiting: Device state=%u\n", dev_state);
2360
2361         switch (dev_state) {
2362         case QLCNIC_DEV_QUISCENT:
2363         case QLCNIC_DEV_NEED_QUISCENT:
2364         case QLCNIC_DEV_NEED_RESET:
2365                 qlcnic_schedule_work(adapter,
2366                         qlcnic_fwinit_work, FW_POLL_DELAY);
2367                 return;
2368         case QLCNIC_DEV_FAILED:
2369                 break;
2370
2371         default:
2372                 if (!adapter->nic_ops->start_firmware(adapter)) {
2373                         qlcnic_schedule_work(adapter, qlcnic_attach_work, 0);
2374                         return;
2375                 }
2376         }
2377
2378 err_ret:
2379         dev_err(&adapter->pdev->dev, "Fwinit work failed state=%u "
2380                 "fw_wait_cnt=%u\n", dev_state, adapter->fw_wait_cnt);
2381         netif_device_attach(adapter->netdev);
2382         qlcnic_clr_all_drv_state(adapter);
2383 }
2384
2385 static void
2386 qlcnic_detach_work(struct work_struct *work)
2387 {
2388         struct qlcnic_adapter *adapter = container_of(work,
2389                         struct qlcnic_adapter, fw_work.work);
2390         struct net_device *netdev = adapter->netdev;
2391         u32 status;
2392
2393         netif_device_detach(netdev);
2394
2395         qlcnic_down(adapter, netdev);
2396
2397         rtnl_lock();
2398         qlcnic_detach(adapter);
2399         rtnl_unlock();
2400
2401         status = QLCRD32(adapter, QLCNIC_PEG_HALT_STATUS1);
2402
2403         if (status & QLCNIC_RCODE_FATAL_ERROR)
2404                 goto err_ret;
2405
2406         if (adapter->temp == QLCNIC_TEMP_PANIC)
2407                 goto err_ret;
2408
2409         if (qlcnic_set_drv_state(adapter, adapter->dev_state))
2410                 goto err_ret;
2411
2412         adapter->fw_wait_cnt = 0;
2413
2414         qlcnic_schedule_work(adapter, qlcnic_fwinit_work, FW_POLL_DELAY);
2415
2416         return;
2417
2418 err_ret:
2419         dev_err(&adapter->pdev->dev, "detach failed; status=%d temp=%d\n",
2420                         status, adapter->temp);
2421         netif_device_attach(netdev);
2422         qlcnic_clr_all_drv_state(adapter);
2423
2424 }
2425
2426 /*Transit to RESET state from READY state only */
2427 static void
2428 qlcnic_dev_request_reset(struct qlcnic_adapter *adapter)
2429 {
2430         u32 state;
2431
2432         if (qlcnic_api_lock(adapter))
2433                 return;
2434
2435         state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2436
2437         if (state == QLCNIC_DEV_READY) {
2438                 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_NEED_RESET);
2439                 QLCDB(adapter, DRV, "NEED_RESET state set\n");
2440                 qlcnic_idc_debug_info(adapter, 0);
2441         }
2442
2443         qlcnic_api_unlock(adapter);
2444 }
2445
2446 /* Transit to NPAR READY state from NPAR NOT READY state */
2447 static void
2448 qlcnic_dev_set_npar_ready(struct qlcnic_adapter *adapter)
2449 {
2450         u32 state;
2451
2452         if (adapter->op_mode == QLCNIC_NON_PRIV_FUNC ||
2453                 adapter->fw_hal_version == QLCNIC_FW_BASE)
2454                 return;
2455
2456         if (qlcnic_api_lock(adapter))
2457                 return;
2458
2459         state = QLCRD32(adapter, QLCNIC_CRB_DEV_NPAR_STATE);
2460
2461         if (state != QLCNIC_DEV_NPAR_RDY) {
2462                 QLCWR32(adapter, QLCNIC_CRB_DEV_NPAR_STATE,
2463                         QLCNIC_DEV_NPAR_RDY);
2464                 QLCDB(adapter, DRV, "NPAR READY state set\n");
2465         }
2466
2467         qlcnic_api_unlock(adapter);
2468 }
2469
2470 static void
2471 qlcnic_schedule_work(struct qlcnic_adapter *adapter,
2472                 work_func_t func, int delay)
2473 {
2474         INIT_DELAYED_WORK(&adapter->fw_work, func);
2475         schedule_delayed_work(&adapter->fw_work, round_jiffies_relative(delay));
2476 }
2477
2478 static void
2479 qlcnic_cancel_fw_work(struct qlcnic_adapter *adapter)
2480 {
2481         while (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
2482                 msleep(10);
2483
2484         cancel_delayed_work_sync(&adapter->fw_work);
2485 }
2486
2487 static void
2488 qlcnic_attach_work(struct work_struct *work)
2489 {
2490         struct qlcnic_adapter *adapter = container_of(work,
2491                                 struct qlcnic_adapter, fw_work.work);
2492         struct net_device *netdev = adapter->netdev;
2493         int err;
2494
2495         if (netif_running(netdev)) {
2496                 err = qlcnic_attach(adapter);
2497                 if (err)
2498                         goto done;
2499
2500                 err = qlcnic_up(adapter, netdev);
2501                 if (err) {
2502                         qlcnic_detach(adapter);
2503                         goto done;
2504                 }
2505
2506                 qlcnic_config_indev_addr(netdev, NETDEV_UP);
2507         }
2508
2509 done:
2510         netif_device_attach(netdev);
2511         adapter->fw_fail_cnt = 0;
2512         clear_bit(__QLCNIC_RESETTING, &adapter->state);
2513
2514         if (!qlcnic_clr_drv_state(adapter))
2515                 qlcnic_schedule_work(adapter, qlcnic_fw_poll_work,
2516                                                         FW_POLL_DELAY);
2517 }
2518
2519 static int
2520 qlcnic_check_health(struct qlcnic_adapter *adapter)
2521 {
2522         u32 state = 0, heartbit;
2523         struct net_device *netdev = adapter->netdev;
2524
2525         if (qlcnic_check_temp(adapter))
2526                 goto detach;
2527
2528         if (adapter->need_fw_reset)
2529                 qlcnic_dev_request_reset(adapter);
2530
2531         state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2532         if (state == QLCNIC_DEV_NEED_RESET || state == QLCNIC_DEV_NEED_QUISCENT)
2533                 adapter->need_fw_reset = 1;
2534
2535         heartbit = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
2536         if (heartbit != adapter->heartbit) {
2537                 adapter->heartbit = heartbit;
2538                 adapter->fw_fail_cnt = 0;
2539                 if (adapter->need_fw_reset)
2540                         goto detach;
2541                 return 0;
2542         }
2543
2544         if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2545                 return 0;
2546
2547         qlcnic_dev_request_reset(adapter);
2548
2549         clear_bit(__QLCNIC_FW_ATTACHED, &adapter->state);
2550
2551         dev_info(&netdev->dev, "firmware hang detected\n");
2552
2553 detach:
2554         adapter->dev_state = (state == QLCNIC_DEV_NEED_QUISCENT) ? state :
2555                 QLCNIC_DEV_NEED_RESET;
2556
2557         if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
2558                 !test_and_set_bit(__QLCNIC_RESETTING, &adapter->state)) {
2559
2560                 qlcnic_schedule_work(adapter, qlcnic_detach_work, 0);
2561                 QLCDB(adapter, DRV, "fw recovery scheduled.\n");
2562         }
2563
2564         return 1;
2565 }
2566
2567 static void
2568 qlcnic_fw_poll_work(struct work_struct *work)
2569 {
2570         struct qlcnic_adapter *adapter = container_of(work,
2571                                 struct qlcnic_adapter, fw_work.work);
2572
2573         if (test_bit(__QLCNIC_RESETTING, &adapter->state))
2574                 goto reschedule;
2575
2576
2577         if (qlcnic_check_health(adapter))
2578                 return;
2579
2580 reschedule:
2581         qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
2582 }
2583
2584 static int
2585 qlcnicvf_start_firmware(struct qlcnic_adapter *adapter)
2586 {
2587         int err;
2588
2589         err = qlcnic_can_start_firmware(adapter);
2590         if (err)
2591                 return err;
2592
2593         qlcnic_check_options(adapter);
2594
2595         adapter->need_fw_reset = 0;
2596
2597         return err;
2598 }
2599
2600 static int
2601 qlcnicvf_config_bridged_mode(struct qlcnic_adapter *adapter, u32 enable)
2602 {
2603         return -EOPNOTSUPP;
2604 }
2605
2606 static int
2607 qlcnicvf_config_led(struct qlcnic_adapter *adapter, u32 state, u32 rate)
2608 {
2609         return -EOPNOTSUPP;
2610 }
2611
2612 static int
2613 qlcnicvf_set_ilb_mode(struct qlcnic_adapter *adapter)
2614 {
2615         return -EOPNOTSUPP;
2616 }
2617
2618 static void
2619 qlcnicvf_clear_ilb_mode(struct qlcnic_adapter *adapter)
2620 {
2621         return;
2622 }
2623
2624 static ssize_t
2625 qlcnic_store_bridged_mode(struct device *dev,
2626                 struct device_attribute *attr, const char *buf, size_t len)
2627 {
2628         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2629         unsigned long new;
2630         int ret = -EINVAL;
2631
2632         if (!(adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG))
2633                 goto err_out;
2634
2635         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
2636                 goto err_out;
2637
2638         if (strict_strtoul(buf, 2, &new))
2639                 goto err_out;
2640
2641         if (!adapter->nic_ops->config_bridged_mode(adapter, !!new))
2642                 ret = len;
2643
2644 err_out:
2645         return ret;
2646 }
2647
2648 static ssize_t
2649 qlcnic_show_bridged_mode(struct device *dev,
2650                 struct device_attribute *attr, char *buf)
2651 {
2652         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2653         int bridged_mode = 0;
2654
2655         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
2656                 bridged_mode = !!(adapter->flags & QLCNIC_BRIDGE_ENABLED);
2657
2658         return sprintf(buf, "%d\n", bridged_mode);
2659 }
2660
2661 static struct device_attribute dev_attr_bridged_mode = {
2662        .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2663        .show = qlcnic_show_bridged_mode,
2664        .store = qlcnic_store_bridged_mode,
2665 };
2666
2667 static ssize_t
2668 qlcnic_store_diag_mode(struct device *dev,
2669                 struct device_attribute *attr, const char *buf, size_t len)
2670 {
2671         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2672         unsigned long new;
2673
2674         if (strict_strtoul(buf, 2, &new))
2675                 return -EINVAL;
2676
2677         if (!!new != !!(adapter->flags & QLCNIC_DIAG_ENABLED))
2678                 adapter->flags ^= QLCNIC_DIAG_ENABLED;
2679
2680         return len;
2681 }
2682
2683 static ssize_t
2684 qlcnic_show_diag_mode(struct device *dev,
2685                 struct device_attribute *attr, char *buf)
2686 {
2687         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2688
2689         return sprintf(buf, "%d\n",
2690                         !!(adapter->flags & QLCNIC_DIAG_ENABLED));
2691 }
2692
2693 static struct device_attribute dev_attr_diag_mode = {
2694         .attr = {.name = "diag_mode", .mode = (S_IRUGO | S_IWUSR)},
2695         .show = qlcnic_show_diag_mode,
2696         .store = qlcnic_store_diag_mode,
2697 };
2698
2699 static int
2700 qlcnic_sysfs_validate_crb(struct qlcnic_adapter *adapter,
2701                 loff_t offset, size_t size)
2702 {
2703         size_t crb_size = 4;
2704
2705         if (!(adapter->flags & QLCNIC_DIAG_ENABLED))
2706                 return -EIO;
2707
2708         if (offset < QLCNIC_PCI_CRBSPACE) {
2709                 if (ADDR_IN_RANGE(offset, QLCNIC_PCI_CAMQM,
2710                                         QLCNIC_PCI_CAMQM_END))
2711                         crb_size = 8;
2712                 else
2713                         return -EINVAL;
2714         }
2715
2716         if ((size != crb_size) || (offset & (crb_size-1)))
2717                 return  -EINVAL;
2718
2719         return 0;
2720 }
2721
2722 static ssize_t
2723 qlcnic_sysfs_read_crb(struct file *filp, struct kobject *kobj,
2724                 struct bin_attribute *attr,
2725                 char *buf, loff_t offset, size_t size)
2726 {
2727         struct device *dev = container_of(kobj, struct device, kobj);
2728         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2729         u32 data;
2730         u64 qmdata;
2731         int ret;
2732
2733         ret = qlcnic_sysfs_validate_crb(adapter, offset, size);
2734         if (ret != 0)
2735                 return ret;
2736
2737         if (ADDR_IN_RANGE(offset, QLCNIC_PCI_CAMQM, QLCNIC_PCI_CAMQM_END)) {
2738                 qlcnic_pci_camqm_read_2M(adapter, offset, &qmdata);
2739                 memcpy(buf, &qmdata, size);
2740         } else {
2741                 data = QLCRD32(adapter, offset);
2742                 memcpy(buf, &data, size);
2743         }
2744         return size;
2745 }
2746
2747 static ssize_t
2748 qlcnic_sysfs_write_crb(struct file *filp, struct kobject *kobj,
2749                 struct bin_attribute *attr,
2750                 char *buf, loff_t offset, size_t size)
2751 {
2752         struct device *dev = container_of(kobj, struct device, kobj);
2753         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2754         u32 data;
2755         u64 qmdata;
2756         int ret;
2757
2758         ret = qlcnic_sysfs_validate_crb(adapter, offset, size);
2759         if (ret != 0)
2760                 return ret;
2761
2762         if (ADDR_IN_RANGE(offset, QLCNIC_PCI_CAMQM, QLCNIC_PCI_CAMQM_END)) {
2763                 memcpy(&qmdata, buf, size);
2764                 qlcnic_pci_camqm_write_2M(adapter, offset, qmdata);
2765         } else {
2766                 memcpy(&data, buf, size);
2767                 QLCWR32(adapter, offset, data);
2768         }
2769         return size;
2770 }
2771
2772 static int
2773 qlcnic_sysfs_validate_mem(struct qlcnic_adapter *adapter,
2774                 loff_t offset, size_t size)
2775 {
2776         if (!(adapter->flags & QLCNIC_DIAG_ENABLED))
2777                 return -EIO;
2778
2779         if ((size != 8) || (offset & 0x7))
2780                 return  -EIO;
2781
2782         return 0;
2783 }
2784
2785 static ssize_t
2786 qlcnic_sysfs_read_mem(struct file *filp, struct kobject *kobj,
2787                 struct bin_attribute *attr,
2788                 char *buf, loff_t offset, size_t size)
2789 {
2790         struct device *dev = container_of(kobj, struct device, kobj);
2791         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2792         u64 data;
2793         int ret;
2794
2795         ret = qlcnic_sysfs_validate_mem(adapter, offset, size);
2796         if (ret != 0)
2797                 return ret;
2798
2799         if (qlcnic_pci_mem_read_2M(adapter, offset, &data))
2800                 return -EIO;
2801
2802         memcpy(buf, &data, size);
2803
2804         return size;
2805 }
2806
2807 static ssize_t
2808 qlcnic_sysfs_write_mem(struct file *filp, struct kobject *kobj,
2809                 struct bin_attribute *attr,
2810                 char *buf, loff_t offset, size_t size)
2811 {
2812         struct device *dev = container_of(kobj, struct device, kobj);
2813         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2814         u64 data;
2815         int ret;
2816
2817         ret = qlcnic_sysfs_validate_mem(adapter, offset, size);
2818         if (ret != 0)
2819                 return ret;
2820
2821         memcpy(&data, buf, size);
2822
2823         if (qlcnic_pci_mem_write_2M(adapter, offset, data))
2824                 return -EIO;
2825
2826         return size;
2827 }
2828
2829
2830 static struct bin_attribute bin_attr_crb = {
2831         .attr = {.name = "crb", .mode = (S_IRUGO | S_IWUSR)},
2832         .size = 0,
2833         .read = qlcnic_sysfs_read_crb,
2834         .write = qlcnic_sysfs_write_crb,
2835 };
2836
2837 static struct bin_attribute bin_attr_mem = {
2838         .attr = {.name = "mem", .mode = (S_IRUGO | S_IWUSR)},
2839         .size = 0,
2840         .read = qlcnic_sysfs_read_mem,
2841         .write = qlcnic_sysfs_write_mem,
2842 };
2843
2844 static void
2845 qlcnic_create_sysfs_entries(struct qlcnic_adapter *adapter)
2846 {
2847         struct device *dev = &adapter->pdev->dev;
2848
2849         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
2850                 if (device_create_file(dev, &dev_attr_bridged_mode))
2851                         dev_warn(dev,
2852                                 "failed to create bridged_mode sysfs entry\n");
2853 }
2854
2855 static void
2856 qlcnic_remove_sysfs_entries(struct qlcnic_adapter *adapter)
2857 {
2858         struct device *dev = &adapter->pdev->dev;
2859
2860         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
2861                 device_remove_file(dev, &dev_attr_bridged_mode);
2862 }
2863
2864 static void
2865 qlcnic_create_diag_entries(struct qlcnic_adapter *adapter)
2866 {
2867         struct device *dev = &adapter->pdev->dev;
2868
2869         if (device_create_file(dev, &dev_attr_diag_mode))
2870                 dev_info(dev, "failed to create diag_mode sysfs entry\n");
2871         if (device_create_bin_file(dev, &bin_attr_crb))
2872                 dev_info(dev, "failed to create crb sysfs entry\n");
2873         if (device_create_bin_file(dev, &bin_attr_mem))
2874                 dev_info(dev, "failed to create mem sysfs entry\n");
2875 }
2876
2877
2878 static void
2879 qlcnic_remove_diag_entries(struct qlcnic_adapter *adapter)
2880 {
2881         struct device *dev = &adapter->pdev->dev;
2882
2883         device_remove_file(dev, &dev_attr_diag_mode);
2884         device_remove_bin_file(dev, &bin_attr_crb);
2885         device_remove_bin_file(dev, &bin_attr_mem);
2886 }
2887
2888 #ifdef CONFIG_INET
2889
2890 #define is_qlcnic_netdev(dev) (dev->netdev_ops == &qlcnic_netdev_ops)
2891
2892 static void
2893 qlcnic_config_indev_addr(struct net_device *dev, unsigned long event)
2894 {
2895         struct in_device *indev;
2896         struct qlcnic_adapter *adapter = netdev_priv(dev);
2897
2898         indev = in_dev_get(dev);
2899         if (!indev)
2900                 return;
2901
2902         for_ifa(indev) {
2903                 switch (event) {
2904                 case NETDEV_UP:
2905                         qlcnic_config_ipaddr(adapter,
2906                                         ifa->ifa_address, QLCNIC_IP_UP);
2907                         break;
2908                 case NETDEV_DOWN:
2909                         qlcnic_config_ipaddr(adapter,
2910                                         ifa->ifa_address, QLCNIC_IP_DOWN);
2911                         break;
2912                 default:
2913                         break;
2914                 }
2915         } endfor_ifa(indev);
2916
2917         in_dev_put(indev);
2918 }
2919
2920 static int qlcnic_netdev_event(struct notifier_block *this,
2921                                  unsigned long event, void *ptr)
2922 {
2923         struct qlcnic_adapter *adapter;
2924         struct net_device *dev = (struct net_device *)ptr;
2925
2926 recheck:
2927         if (dev == NULL)
2928                 goto done;
2929
2930         if (dev->priv_flags & IFF_802_1Q_VLAN) {
2931                 dev = vlan_dev_real_dev(dev);
2932                 goto recheck;
2933         }
2934
2935         if (!is_qlcnic_netdev(dev))
2936                 goto done;
2937
2938         adapter = netdev_priv(dev);
2939
2940         if (!adapter)
2941                 goto done;
2942
2943         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
2944                 goto done;
2945
2946         qlcnic_config_indev_addr(dev, event);
2947 done:
2948         return NOTIFY_DONE;
2949 }
2950
2951 static int
2952 qlcnic_inetaddr_event(struct notifier_block *this,
2953                 unsigned long event, void *ptr)
2954 {
2955         struct qlcnic_adapter *adapter;
2956         struct net_device *dev;
2957
2958         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2959
2960         dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
2961
2962 recheck:
2963         if (dev == NULL || !netif_running(dev))
2964                 goto done;
2965
2966         if (dev->priv_flags & IFF_802_1Q_VLAN) {
2967                 dev = vlan_dev_real_dev(dev);
2968                 goto recheck;
2969         }
2970
2971         if (!is_qlcnic_netdev(dev))
2972                 goto done;
2973
2974         adapter = netdev_priv(dev);
2975
2976         if (!adapter)
2977                 goto done;
2978
2979         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
2980                 goto done;
2981
2982         switch (event) {
2983         case NETDEV_UP:
2984                 qlcnic_config_ipaddr(adapter, ifa->ifa_address, QLCNIC_IP_UP);
2985                 break;
2986         case NETDEV_DOWN:
2987                 qlcnic_config_ipaddr(adapter, ifa->ifa_address, QLCNIC_IP_DOWN);
2988                 break;
2989         default:
2990                 break;
2991         }
2992
2993 done:
2994         return NOTIFY_DONE;
2995 }
2996
2997 static struct notifier_block    qlcnic_netdev_cb = {
2998         .notifier_call = qlcnic_netdev_event,
2999 };
3000
3001 static struct notifier_block qlcnic_inetaddr_cb = {
3002         .notifier_call = qlcnic_inetaddr_event,
3003 };
3004 #else
3005 static void
3006 qlcnic_config_indev_addr(struct net_device *dev, unsigned long event)
3007 { }
3008 #endif
3009
3010 static struct pci_driver qlcnic_driver = {
3011         .name = qlcnic_driver_name,
3012         .id_table = qlcnic_pci_tbl,
3013         .probe = qlcnic_probe,
3014         .remove = __devexit_p(qlcnic_remove),
3015 #ifdef CONFIG_PM
3016         .suspend = qlcnic_suspend,
3017         .resume = qlcnic_resume,
3018 #endif
3019         .shutdown = qlcnic_shutdown
3020 };
3021
3022 static int __init qlcnic_init_module(void)
3023 {
3024
3025         printk(KERN_INFO "%s\n", qlcnic_driver_string);
3026
3027 #ifdef CONFIG_INET
3028         register_netdevice_notifier(&qlcnic_netdev_cb);
3029         register_inetaddr_notifier(&qlcnic_inetaddr_cb);
3030 #endif
3031
3032
3033         return pci_register_driver(&qlcnic_driver);
3034 }
3035
3036 module_init(qlcnic_init_module);
3037
3038 static void __exit qlcnic_exit_module(void)
3039 {
3040
3041         pci_unregister_driver(&qlcnic_driver);
3042
3043 #ifdef CONFIG_INET
3044         unregister_inetaddr_notifier(&qlcnic_inetaddr_cb);
3045         unregister_netdevice_notifier(&qlcnic_netdev_cb);
3046 #endif
3047 }
3048
3049 module_exit(qlcnic_exit_module);