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 #include <linux/aer.h>
  38
  39 MODULE_DESCRIPTION("QLogic 1/10 GbE Converged/Intelligent Ethernet Driver");
  40 MODULE_LICENSE("GPL");
  41 MODULE_VERSION(QLCNIC_LINUX_VERSIONID);
  42 MODULE_FIRMWARE(QLCNIC_UNIFIED_ROMIMAGE_NAME);
  43
  44 char qlcnic_driver_name[] = "qlcnic";
  45 static const char qlcnic_driver_string[] = "QLogic 1/10 GbE "
  46         "Converged/Intelligent Ethernet Driver v" QLCNIC_LINUX_VERSIONID;
  47
  48 static int port_mode = QLCNIC_PORT_MODE_AUTO_NEG;
  49
  50 /* Default to restricted 1G auto-neg mode */
  51 static int wol_port_mode = 5;
  52
  53 static int use_msi = 1;
  54 module_param(use_msi, int, 0644);
  55 MODULE_PARM_DESC(use_msi, "MSI interrupt (0=disabled, 1=enabled");
  56
  57 static int use_msi_x = 1;
  58 module_param(use_msi_x, int, 0644);
  59 MODULE_PARM_DESC(use_msi_x, "MSI-X interrupt (0=disabled, 1=enabled");
  60
  61 static int auto_fw_reset = AUTO_FW_RESET_ENABLED;
  62 module_param(auto_fw_reset, int, 0644);
  63 MODULE_PARM_DESC(auto_fw_reset, "Auto firmware reset (0=disabled, 1=enabled");
  64
  65 static int load_fw_file;
  66 module_param(load_fw_file, int, 0644);
  67 MODULE_PARM_DESC(load_fw_file, "Load firmware from (0=flash, 1=file");
  68
  69 static int qlcnic_config_npars;
  70 module_param(qlcnic_config_npars, int, 0644);
  71 MODULE_PARM_DESC(qlcnic_config_npars, "Configure NPARs (0=disabled, 1=enabled");
  72
  73 static int __devinit qlcnic_probe(struct pci_dev *pdev,
  74                 const struct pci_device_id *ent);
  75 static void __devexit qlcnic_remove(struct pci_dev *pdev);
  76 static int qlcnic_open(struct net_device *netdev);
  77 static int qlcnic_close(struct net_device *netdev);
  78 static void qlcnic_tx_timeout(struct net_device *netdev);
  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 static int qlcnic_rx_poll(struct napi_struct *napi, int budget);
  87 #ifdef CONFIG_NET_POLL_CONTROLLER
  88 static void qlcnic_poll_controller(struct net_device *netdev);
  89 #endif
  90
  91 static void qlcnic_create_sysfs_entries(struct qlcnic_adapter *adapter);
  92 static void qlcnic_remove_sysfs_entries(struct qlcnic_adapter *adapter);
  93 static void qlcnic_create_diag_entries(struct qlcnic_adapter *adapter);
  94 static void qlcnic_remove_diag_entries(struct qlcnic_adapter *adapter);
  95
  96 static void qlcnic_idc_debug_info(struct qlcnic_adapter *adapter, u8 encoding);
  97 static void qlcnic_clr_all_drv_state(struct qlcnic_adapter *adapter);
  98 static int qlcnic_can_start_firmware(struct qlcnic_adapter *adapter);
  99
 100 static irqreturn_t qlcnic_tmp_intr(int irq, void *data);
 101 static irqreturn_t qlcnic_intr(int irq, void *data);
 102 static irqreturn_t qlcnic_msi_intr(int irq, void *data);
 103 static irqreturn_t qlcnic_msix_intr(int irq, void *data);
 104
 105 static struct net_device_stats *qlcnic_get_stats(struct net_device *netdev);
 106 static void qlcnic_config_indev_addr(struct net_device *dev, unsigned long);
 107 static int qlcnic_start_firmware(struct qlcnic_adapter *);
 108
 109 static void qlcnic_dev_set_npar_ready(struct qlcnic_adapter *);
 110 static int qlcnicvf_config_led(struct qlcnic_adapter *, u32, u32);
 111 static int qlcnicvf_config_bridged_mode(struct qlcnic_adapter *, u32);
 112 static int qlcnicvf_start_firmware(struct qlcnic_adapter *);
 113 /*  PCI Device ID Table  */
 114 #define ENTRY(device) \
 115         {PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, (device)), \
 116         .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
 117
 118 #define PCI_DEVICE_ID_QLOGIC_QLE824X  0x8020
 119
 120 static DEFINE_PCI_DEVICE_TABLE(qlcnic_pci_tbl) = {
 121         ENTRY(PCI_DEVICE_ID_QLOGIC_QLE824X),
 122         {0,}
 123 };
 124
 125 MODULE_DEVICE_TABLE(pci, qlcnic_pci_tbl);
 126
 127
 128 void
 129 qlcnic_update_cmd_producer(struct qlcnic_adapter *adapter,
 130                 struct qlcnic_host_tx_ring *tx_ring)
 131 {
 132         writel(tx_ring->producer, tx_ring->crb_cmd_producer);
 133 }
 134
 135 static const u32 msi_tgt_status[8] = {
 136         ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
 137         ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
 138         ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
 139         ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
 140 };
 141
 142 static const
 143 struct qlcnic_legacy_intr_set legacy_intr[] = QLCNIC_LEGACY_INTR_CONFIG;
 144
 145 static inline void qlcnic_disable_int(struct qlcnic_host_sds_ring *sds_ring)
 146 {
 147         writel(0, sds_ring->crb_intr_mask);
 148 }
 149
 150 static inline void qlcnic_enable_int(struct qlcnic_host_sds_ring *sds_ring)
 151 {
 152         struct qlcnic_adapter *adapter = sds_ring->adapter;
 153
 154         writel(0x1, sds_ring->crb_intr_mask);
 155
 156         if (!QLCNIC_IS_MSI_FAMILY(adapter))
 157                 writel(0xfbff, adapter->tgt_mask_reg);
 158 }
 159
 160 static int
 161 qlcnic_alloc_sds_rings(struct qlcnic_recv_context *recv_ctx, int count)
 162 {
 163         int size = sizeof(struct qlcnic_host_sds_ring) * count;
 164
 165         recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
 166
 167         return (recv_ctx->sds_rings == NULL);
 168 }
 169
 170 static void
 171 qlcnic_free_sds_rings(struct qlcnic_recv_context *recv_ctx)
 172 {
 173         if (recv_ctx->sds_rings != NULL)
 174                 kfree(recv_ctx->sds_rings);
 175
 176         recv_ctx->sds_rings = NULL;
 177 }
 178
 179 static int
 180 qlcnic_napi_add(struct qlcnic_adapter *adapter, struct net_device *netdev)
 181 {
 182         int ring;
 183         struct qlcnic_host_sds_ring *sds_ring;
 184         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 185
 186         if (qlcnic_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
 187                 return -ENOMEM;
 188
 189         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 190                 sds_ring = &recv_ctx->sds_rings[ring];
 191
 192                 if (ring == adapter->max_sds_rings - 1)
 193                         netif_napi_add(netdev, &sds_ring->napi, qlcnic_poll,
 194                                 QLCNIC_NETDEV_WEIGHT/adapter->max_sds_rings);
 195                 else
 196                         netif_napi_add(netdev, &sds_ring->napi,
 197                                 qlcnic_rx_poll, QLCNIC_NETDEV_WEIGHT*2);
 198         }
 199
 200         return 0;
 201 }
 202
 203 static void
 204 qlcnic_napi_del(struct qlcnic_adapter *adapter)
 205 {
 206         int ring;
 207         struct qlcnic_host_sds_ring *sds_ring;
 208         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 209
 210         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 211                 sds_ring = &recv_ctx->sds_rings[ring];
 212                 netif_napi_del(&sds_ring->napi);
 213         }
 214
 215         qlcnic_free_sds_rings(&adapter->recv_ctx);
 216 }
 217
 218 static void
 219 qlcnic_napi_enable(struct qlcnic_adapter *adapter)
 220 {
 221         int ring;
 222         struct qlcnic_host_sds_ring *sds_ring;
 223         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 224
 225         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
 226                 return;
 227
 228         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 229                 sds_ring = &recv_ctx->sds_rings[ring];
 230                 napi_enable(&sds_ring->napi);
 231                 qlcnic_enable_int(sds_ring);
 232         }
 233 }
 234
 235 static void
 236 qlcnic_napi_disable(struct qlcnic_adapter *adapter)
 237 {
 238         int ring;
 239         struct qlcnic_host_sds_ring *sds_ring;
 240         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 241
 242         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
 243                 return;
 244
 245         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 246                 sds_ring = &recv_ctx->sds_rings[ring];
 247                 qlcnic_disable_int(sds_ring);
 248                 napi_synchronize(&sds_ring->napi);
 249                 napi_disable(&sds_ring->napi);
 250         }
 251 }
 252
 253 static void qlcnic_clear_stats(struct qlcnic_adapter *adapter)
 254 {
 255         memset(&adapter->stats, 0, sizeof(adapter->stats));
 256 }
 257
 258 static void qlcnic_set_port_mode(struct qlcnic_adapter *adapter)
 259 {
 260         u32 val, data;
 261
 262         val = adapter->ahw.board_type;
 263         if ((val == QLCNIC_BRDTYPE_P3_HMEZ) ||
 264                 (val == QLCNIC_BRDTYPE_P3_XG_LOM)) {
 265                 if (port_mode == QLCNIC_PORT_MODE_802_3_AP) {
 266                         data = QLCNIC_PORT_MODE_802_3_AP;
 267                         QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
 268                 } else if (port_mode == QLCNIC_PORT_MODE_XG) {
 269                         data = QLCNIC_PORT_MODE_XG;
 270                         QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
 271                 } else if (port_mode == QLCNIC_PORT_MODE_AUTO_NEG_1G) {
 272                         data = QLCNIC_PORT_MODE_AUTO_NEG_1G;
 273                         QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
 274                 } else if (port_mode == QLCNIC_PORT_MODE_AUTO_NEG_XG) {
 275                         data = QLCNIC_PORT_MODE_AUTO_NEG_XG;
 276                         QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
 277                 } else {
 278                         data = QLCNIC_PORT_MODE_AUTO_NEG;
 279                         QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
 280                 }
 281
 282                 if ((wol_port_mode != QLCNIC_PORT_MODE_802_3_AP) &&
 283                         (wol_port_mode != QLCNIC_PORT_MODE_XG) &&
 284                         (wol_port_mode != QLCNIC_PORT_MODE_AUTO_NEG_1G) &&
 285                         (wol_port_mode != QLCNIC_PORT_MODE_AUTO_NEG_XG)) {
 286                         wol_port_mode = QLCNIC_PORT_MODE_AUTO_NEG;
 287                 }
 288                 QLCWR32(adapter, QLCNIC_WOL_PORT_MODE, wol_port_mode);
 289         }
 290 }
 291
 292 static void qlcnic_set_msix_bit(struct pci_dev *pdev, int enable)
 293 {
 294         u32 control;
 295         int pos;
 296
 297         pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
 298         if (pos) {
 299                 pci_read_config_dword(pdev, pos, &control);
 300                 if (enable)
 301                         control |= PCI_MSIX_FLAGS_ENABLE;
 302                 else
 303                         control = 0;
 304                 pci_write_config_dword(pdev, pos, control);
 305         }
 306 }
 307
 308 static void qlcnic_init_msix_entries(struct qlcnic_adapter *adapter, int count)
 309 {
 310         int i;
 311
 312         for (i = 0; i < count; i++)
 313                 adapter->msix_entries[i].entry = i;
 314 }
 315
 316 static int
 317 qlcnic_read_mac_addr(struct qlcnic_adapter *adapter)
 318 {
 319         u8 mac_addr[ETH_ALEN];
 320         struct net_device *netdev = adapter->netdev;
 321         struct pci_dev *pdev = adapter->pdev;
 322
 323         if (adapter->nic_ops->get_mac_addr(adapter, mac_addr) != 0)
 324                 return -EIO;
 325
 326         memcpy(netdev->dev_addr, mac_addr, ETH_ALEN);
 327         memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
 328         memcpy(adapter->mac_addr, netdev->dev_addr, netdev->addr_len);
 329
 330         /* set station address */
 331
 332         if (!is_valid_ether_addr(netdev->perm_addr))
 333                 dev_warn(&pdev->dev, "Bad MAC address %pM.\n",
 334                                         netdev->dev_addr);
 335
 336         return 0;
 337 }
 338
 339 static int qlcnic_set_mac(struct net_device *netdev, void *p)
 340 {
 341         struct qlcnic_adapter *adapter = netdev_priv(netdev);
 342         struct sockaddr *addr = p;
 343
 344         if (!is_valid_ether_addr(addr->sa_data))
 345                 return -EINVAL;
 346
 347         if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
 348                 netif_device_detach(netdev);
 349                 qlcnic_napi_disable(adapter);
 350         }
 351
 352         memcpy(adapter->mac_addr, addr->sa_data, netdev->addr_len);
 353         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
 354         qlcnic_set_multi(adapter->netdev);
 355
 356         if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
 357                 netif_device_attach(netdev);
 358                 qlcnic_napi_enable(adapter);
 359         }
 360         return 0;
 361 }
 362
 363 static const struct net_device_ops qlcnic_netdev_ops = {
 364         .ndo_open          = qlcnic_open,
 365         .ndo_stop          = qlcnic_close,
 366         .ndo_start_xmit    = qlcnic_xmit_frame,
 367         .ndo_get_stats     = qlcnic_get_stats,
 368         .ndo_validate_addr = eth_validate_addr,
 369         .ndo_set_multicast_list = qlcnic_set_multi,
 370         .ndo_set_mac_address    = qlcnic_set_mac,
 371         .ndo_change_mtu    = qlcnic_change_mtu,
 372         .ndo_tx_timeout    = qlcnic_tx_timeout,
 373 #ifdef CONFIG_NET_POLL_CONTROLLER
 374         .ndo_poll_controller = qlcnic_poll_controller,
 375 #endif
 376 };
 377
 378 static struct qlcnic_nic_template qlcnic_ops = {
 379         .get_mac_addr = qlcnic_get_mac_address,
 380         .config_bridged_mode = qlcnic_config_bridged_mode,
 381         .config_led = qlcnic_config_led,
 382         .start_firmware = qlcnic_start_firmware
 383 };
 384
 385 static struct qlcnic_nic_template qlcnic_vf_ops = {
 386         .get_mac_addr = qlcnic_get_mac_address,
 387         .config_bridged_mode = qlcnicvf_config_bridged_mode,
 388         .config_led = qlcnicvf_config_led,
 389         .start_firmware = qlcnicvf_start_firmware
 390 };
 391
 392 static void
 393 qlcnic_setup_intr(struct qlcnic_adapter *adapter)
 394 {
 395         const struct qlcnic_legacy_intr_set *legacy_intrp;
 396         struct pci_dev *pdev = adapter->pdev;
 397         int err, num_msix;
 398
 399         if (adapter->rss_supported) {
 400                 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
 401                         MSIX_ENTRIES_PER_ADAPTER : 2;
 402         } else
 403                 num_msix = 1;
 404
 405         adapter->max_sds_rings = 1;
 406
 407         adapter->flags &= ~(QLCNIC_MSI_ENABLED | QLCNIC_MSIX_ENABLED);
 408
 409         legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
 410
 411         adapter->int_vec_bit = legacy_intrp->int_vec_bit;
 412         adapter->tgt_status_reg = qlcnic_get_ioaddr(adapter,
 413                         legacy_intrp->tgt_status_reg);
 414         adapter->tgt_mask_reg = qlcnic_get_ioaddr(adapter,
 415                         legacy_intrp->tgt_mask_reg);
 416         adapter->isr_int_vec = qlcnic_get_ioaddr(adapter, ISR_INT_VECTOR);
 417
 418         adapter->crb_int_state_reg = qlcnic_get_ioaddr(adapter,
 419                         ISR_INT_STATE_REG);
 420
 421         qlcnic_set_msix_bit(pdev, 0);
 422
 423         if (adapter->msix_supported) {
 424
 425                 qlcnic_init_msix_entries(adapter, num_msix);
 426                 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
 427                 if (err == 0) {
 428                         adapter->flags |= QLCNIC_MSIX_ENABLED;
 429                         qlcnic_set_msix_bit(pdev, 1);
 430
 431                         if (adapter->rss_supported)
 432                                 adapter->max_sds_rings = num_msix;
 433
 434                         dev_info(&pdev->dev, "using msi-x interrupts\n");
 435                         return;
 436                 }
 437
 438                 if (err > 0)
 439                         pci_disable_msix(pdev);
 440
 441                 /* fall through for msi */
 442         }
 443
 444         if (use_msi && !pci_enable_msi(pdev)) {
 445                 adapter->flags |= QLCNIC_MSI_ENABLED;
 446                 adapter->tgt_status_reg = qlcnic_get_ioaddr(adapter,
 447                                 msi_tgt_status[adapter->ahw.pci_func]);
 448                 dev_info(&pdev->dev, "using msi interrupts\n");
 449                 adapter->msix_entries[0].vector = pdev->irq;
 450                 return;
 451         }
 452
 453         dev_info(&pdev->dev, "using legacy interrupts\n");
 454         adapter->msix_entries[0].vector = pdev->irq;
 455 }
 456
 457 static void
 458 qlcnic_teardown_intr(struct qlcnic_adapter *adapter)
 459 {
 460         if (adapter->flags & QLCNIC_MSIX_ENABLED)
 461                 pci_disable_msix(adapter->pdev);
 462         if (adapter->flags & QLCNIC_MSI_ENABLED)
 463                 pci_disable_msi(adapter->pdev);
 464 }
 465
 466 static void
 467 qlcnic_cleanup_pci_map(struct qlcnic_adapter *adapter)
 468 {
 469         if (adapter->ahw.pci_base0 != NULL)
 470                 iounmap(adapter->ahw.pci_base0);
 471 }
 472
 473 static int
 474 qlcnic_init_pci_info(struct qlcnic_adapter *adapter)
 475 {
 476         struct qlcnic_pci_info pci_info[QLCNIC_MAX_PCI_FUNC];
 477         int i, ret = 0, err;
 478         u8 pfn;
 479
 480         adapter->npars = kzalloc(sizeof(struct qlcnic_npar_info) *
 481                                 QLCNIC_MAX_PCI_FUNC, GFP_KERNEL);
 482         if (!adapter->npars)
 483                 return -ENOMEM;
 484
 485         adapter->eswitch = kzalloc(sizeof(struct qlcnic_eswitch) *
 486                                 QLCNIC_NIU_MAX_XG_PORTS, GFP_KERNEL);
 487         if (!adapter->eswitch) {
 488                 err = -ENOMEM;
 489                 goto err_npars;
 490         }
 491
 492         ret = qlcnic_get_pci_info(adapter, pci_info);
 493         if (ret)
 494                 goto err_eswitch;
 495
 496         for (i = 0; i < QLCNIC_MAX_PCI_FUNC; i++) {
 497                 pfn = pci_info[i].id;
 498                 if (pfn > QLCNIC_MAX_PCI_FUNC)
 499                         return QL_STATUS_INVALID_PARAM;
 500                 adapter->npars[pfn].active = pci_info[i].active;
 501                 adapter->npars[pfn].type = pci_info[i].type;
 502                 adapter->npars[pfn].phy_port = pci_info[i].default_port;
 503                 adapter->npars[pfn].mac_learning = DEFAULT_MAC_LEARN;
 504                 adapter->npars[pfn].min_bw = pci_info[i].tx_min_bw;
 505                 adapter->npars[pfn].max_bw = pci_info[i].tx_max_bw;
 506         }
 507
 508         for (i = 0; i < QLCNIC_NIU_MAX_XG_PORTS; i++)
 509                 adapter->eswitch[i].flags |= QLCNIC_SWITCH_ENABLE;
 510
 511         return 0;
 512
 513 err_eswitch:
 514         kfree(adapter->eswitch);
 515         adapter->eswitch = NULL;
 516 err_npars:
 517         kfree(adapter->npars);
 518         adapter->npars = NULL;
 519
 520         return ret;
 521 }
 522
 523 static int
 524 qlcnic_set_function_modes(struct qlcnic_adapter *adapter)
 525 {
 526         u8 id;
 527         u32 ref_count;
 528         int i, ret = 1;
 529         u32 data = QLCNIC_MGMT_FUNC;
 530         void __iomem *priv_op = adapter->ahw.pci_base0 + QLCNIC_DRV_OP_MODE;
 531
 532         /* If other drivers are not in use set their privilege level */
 533         ref_count = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
 534         ret = qlcnic_api_lock(adapter);
 535         if (ret)
 536                 goto err_lock;
 537         if (QLC_DEV_CLR_REF_CNT(ref_count, adapter->ahw.pci_func))
 538                 goto err_npar;
 539
 540         if (qlcnic_config_npars) {
 541                 for (i = 0; i < QLCNIC_MAX_PCI_FUNC; i++) {
 542                         id = i;
 543                         if (adapter->npars[i].type != QLCNIC_TYPE_NIC ||
 544                                 id == adapter->ahw.pci_func)
 545                                 continue;
 546                         data |= (qlcnic_config_npars &
 547                                         QLC_DEV_SET_DRV(0xf, id));
 548                 }
 549         } else {
 550                 data = readl(priv_op);
 551                 data = (data & ~QLC_DEV_SET_DRV(0xf, adapter->ahw.pci_func)) |
 552                         (QLC_DEV_SET_DRV(QLCNIC_MGMT_FUNC,
 553                         adapter->ahw.pci_func));
 554         }
 555         writel(data, priv_op);
 556 err_npar:
 557         qlcnic_api_unlock(adapter);
 558 err_lock:
 559         return ret;
 560 }
 561
 562 static u32
 563 qlcnic_get_driver_mode(struct qlcnic_adapter *adapter)
 564 {
 565         void __iomem *msix_base_addr;
 566         void __iomem *priv_op;
 567         struct qlcnic_info nic_info;
 568         u32 func;
 569         u32 msix_base;
 570         u32 op_mode, priv_level;
 571
 572         /* Determine FW API version */
 573         adapter->fw_hal_version = readl(adapter->ahw.pci_base0 + QLCNIC_FW_API);
 574
 575         /* Find PCI function number */
 576         pci_read_config_dword(adapter->pdev, QLCNIC_MSIX_TABLE_OFFSET, &func);
 577         msix_base_addr = adapter->ahw.pci_base0 + QLCNIC_MSIX_BASE;
 578         msix_base = readl(msix_base_addr);
 579         func = (func - msix_base)/QLCNIC_MSIX_TBL_PGSIZE;
 580         adapter->ahw.pci_func = func;
 581
 582         if (!qlcnic_get_nic_info(adapter, &nic_info, adapter->ahw.pci_func)) {
 583                 adapter->capabilities = nic_info.capabilities;
 584
 585                 if (adapter->capabilities & BIT_6)
 586                         adapter->flags |= QLCNIC_ESWITCH_ENABLED;
 587                 else
 588                         adapter->flags &= ~QLCNIC_ESWITCH_ENABLED;
 589         }
 590
 591         if (!(adapter->flags & QLCNIC_ESWITCH_ENABLED)) {
 592                 adapter->nic_ops = &qlcnic_ops;
 593                 return adapter->fw_hal_version;
 594         }
 595
 596         /* Determine function privilege level */
 597         priv_op = adapter->ahw.pci_base0 + QLCNIC_DRV_OP_MODE;
 598         op_mode = readl(priv_op);
 599         if (op_mode == QLC_DEV_DRV_DEFAULT)
 600                 priv_level = QLCNIC_MGMT_FUNC;
 601         else
 602                 priv_level = QLC_DEV_GET_DRV(op_mode, adapter->ahw.pci_func);
 603
 604         switch (priv_level) {
 605         case QLCNIC_MGMT_FUNC:
 606                 adapter->op_mode = QLCNIC_MGMT_FUNC;
 607                 adapter->nic_ops = &qlcnic_ops;
 608                 qlcnic_init_pci_info(adapter);
 609                 /* Set privilege level for other functions */
 610                 qlcnic_set_function_modes(adapter);
 611                 dev_info(&adapter->pdev->dev,
 612                         "HAL Version: %d, Management function\n",
 613                         adapter->fw_hal_version);
 614                 break;
 615         case QLCNIC_PRIV_FUNC:
 616                 adapter->op_mode = QLCNIC_PRIV_FUNC;
 617                 dev_info(&adapter->pdev->dev,
 618                         "HAL Version: %d, Privileged function\n",
 619                         adapter->fw_hal_version);
 620                 adapter->nic_ops = &qlcnic_ops;
 621                 break;
 622         case QLCNIC_NON_PRIV_FUNC:
 623                 adapter->op_mode = QLCNIC_NON_PRIV_FUNC;
 624                 dev_info(&adapter->pdev->dev,
 625                         "HAL Version: %d Non Privileged function\n",
 626                         adapter->fw_hal_version);
 627                 adapter->nic_ops = &qlcnic_vf_ops;
 628                 break;
 629         default:
 630                 dev_info(&adapter->pdev->dev, "Unknown function mode: %d\n",
 631                         priv_level);
 632                 return 0;
 633         }
 634         return adapter->fw_hal_version;
 635 }
 636
 637 static int
 638 qlcnic_setup_pci_map(struct qlcnic_adapter *adapter)
 639 {
 640         void __iomem *mem_ptr0 = NULL;
 641         resource_size_t mem_base;
 642         unsigned long mem_len, pci_len0 = 0;
 643
 644         struct pci_dev *pdev = adapter->pdev;
 645
 646         /* remap phys address */
 647         mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
 648         mem_len = pci_resource_len(pdev, 0);
 649
 650         if (mem_len == QLCNIC_PCI_2MB_SIZE) {
 651
 652                 mem_ptr0 = pci_ioremap_bar(pdev, 0);
 653                 if (mem_ptr0 == NULL) {
 654                         dev_err(&pdev->dev, "failed to map PCI bar 0\n");
 655                         return -EIO;
 656                 }
 657                 pci_len0 = mem_len;
 658         } else {
 659                 return -EIO;
 660         }
 661
 662         dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
 663
 664         adapter->ahw.pci_base0 = mem_ptr0;
 665         adapter->ahw.pci_len0 = pci_len0;
 666
 667         if (!qlcnic_get_driver_mode(adapter)) {
 668                 iounmap(adapter->ahw.pci_base0);
 669                 return -EIO;
 670         }
 671
 672         adapter->ahw.ocm_win_crb = qlcnic_get_ioaddr(adapter,
 673                 QLCNIC_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(adapter->ahw.pci_func)));
 674
 675         return 0;
 676 }
 677
 678 static void get_brd_name(struct qlcnic_adapter *adapter, char *name)
 679 {
 680         struct pci_dev *pdev = adapter->pdev;
 681         int i, found = 0;
 682
 683         for (i = 0; i < NUM_SUPPORTED_BOARDS; ++i) {
 684                 if (qlcnic_boards[i].vendor == pdev->vendor &&
 685                         qlcnic_boards[i].device == pdev->device &&
 686                         qlcnic_boards[i].sub_vendor == pdev->subsystem_vendor &&
 687                         qlcnic_boards[i].sub_device == pdev->subsystem_device) {
 688                                 sprintf(name, "%pM: %s" ,
 689                                         adapter->mac_addr,
 690                                         qlcnic_boards[i].short_name);
 691                                 found = 1;
 692                                 break;
 693                 }
 694
 695         }
 696
 697         if (!found)
 698                 sprintf(name, "%pM Gigabit Ethernet", adapter->mac_addr);
 699 }
 700
 701 static void
 702 qlcnic_check_options(struct qlcnic_adapter *adapter)
 703 {
 704         u32 fw_major, fw_minor, fw_build;
 705         char brd_name[QLCNIC_MAX_BOARD_NAME_LEN];
 706         char serial_num[32];
 707         int i, offset, val;
 708         int *ptr32;
 709         struct pci_dev *pdev = adapter->pdev;
 710         struct qlcnic_info nic_info;
 711         adapter->driver_mismatch = 0;
 712
 713         ptr32 = (int *)&serial_num;
 714         offset = QLCNIC_FW_SERIAL_NUM_OFFSET;
 715         for (i = 0; i < 8; i++) {
 716                 if (qlcnic_rom_fast_read(adapter, offset, &val) == -1) {
 717                         dev_err(&pdev->dev, "error reading board info\n");
 718                         adapter->driver_mismatch = 1;
 719                         return;
 720                 }
 721                 ptr32[i] = cpu_to_le32(val);
 722                 offset += sizeof(u32);
 723         }
 724
 725         fw_major = QLCRD32(adapter, QLCNIC_FW_VERSION_MAJOR);
 726         fw_minor = QLCRD32(adapter, QLCNIC_FW_VERSION_MINOR);
 727         fw_build = QLCRD32(adapter, QLCNIC_FW_VERSION_SUB);
 728
 729         adapter->fw_version = QLCNIC_VERSION_CODE(fw_major, fw_minor, fw_build);
 730
 731         if (adapter->portnum == 0) {
 732                 get_brd_name(adapter, brd_name);
 733
 734                 pr_info("%s: %s Board Chip rev 0x%x\n",
 735                                 module_name(THIS_MODULE),
 736                                 brd_name, adapter->ahw.revision_id);
 737         }
 738
 739         dev_info(&pdev->dev, "firmware v%d.%d.%d\n",
 740                         fw_major, fw_minor, fw_build);
 741
 742         adapter->flags &= ~QLCNIC_LRO_ENABLED;
 743
 744         if (adapter->ahw.port_type == QLCNIC_XGBE) {
 745                 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
 746                 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
 747         } else if (adapter->ahw.port_type == QLCNIC_GBE) {
 748                 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
 749                 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
 750         }
 751
 752         if (!qlcnic_get_nic_info(adapter, &nic_info, adapter->ahw.pci_func)) {
 753                 adapter->physical_port = nic_info.phys_port;
 754                 adapter->switch_mode = nic_info.switch_mode;
 755                 adapter->max_tx_ques = nic_info.max_tx_ques;
 756                 adapter->max_rx_ques = nic_info.max_rx_ques;
 757                 adapter->capabilities = nic_info.capabilities;
 758                 adapter->max_mac_filters = nic_info.max_mac_filters;
 759                 adapter->max_mtu = nic_info.max_mtu;
 760         }
 761
 762         adapter->msix_supported = !!use_msi_x;
 763         adapter->rss_supported = !!use_msi_x;
 764
 765         adapter->num_txd = MAX_CMD_DESCRIPTORS;
 766
 767         adapter->max_rds_rings = 2;
 768 }
 769
 770 static int
 771 qlcnic_reset_npar_config(struct qlcnic_adapter *adapter)
 772 {
 773         int i, err = 0;
 774         struct qlcnic_npar_info *npar;
 775         struct qlcnic_info nic_info;
 776
 777         if (!(adapter->flags & QLCNIC_ESWITCH_ENABLED) ||
 778             !adapter->need_fw_reset)
 779                 return 0;
 780
 781         if (adapter->op_mode == QLCNIC_MGMT_FUNC) {
 782                 /* Set the NPAR config data after FW reset */
 783                 for (i = 0; i < QLCNIC_MAX_PCI_FUNC; i++) {
 784                         npar = &adapter->npars[i];
 785                         if (npar->type != QLCNIC_TYPE_NIC)
 786                                 continue;
 787                         err = qlcnic_get_nic_info(adapter, &nic_info, i);
 788                         if (err)
 789                                 goto err_out;
 790                         nic_info.min_tx_bw = npar->min_bw;
 791                         nic_info.max_tx_bw = npar->max_bw;
 792                         err = qlcnic_set_nic_info(adapter, &nic_info);
 793                         if (err)
 794                                 goto err_out;
 795
 796                         if (npar->enable_pm) {
 797                                 err = qlcnic_config_port_mirroring(adapter,
 798                                                 npar->dest_npar, 1, i);
 799                                 if (err)
 800                                         goto err_out;
 801
 802                         }
 803                         npar->mac_learning = DEFAULT_MAC_LEARN;
 804                         npar->host_vlan_tag = 0;
 805                         npar->promisc_mode = 0;
 806                         npar->discard_tagged = 0;
 807                         npar->vlan_id = 0;
 808                 }
 809         }
 810 err_out:
 811         return err;
 812 }
 813
 814 static int
 815 qlcnic_start_firmware(struct qlcnic_adapter *adapter)
 816 {
 817         int val, err, first_boot;
 818
 819         err = qlcnic_can_start_firmware(adapter);
 820         if (err < 0)
 821                 return err;
 822         else if (!err)
 823                 goto wait_init;
 824
 825         first_boot = QLCRD32(adapter, QLCNIC_CAM_RAM(0x1fc));
 826         if (first_boot == 0x55555555)
 827                 /* This is the first boot after power up */
 828                 QLCWR32(adapter, QLCNIC_CAM_RAM(0x1fc), QLCNIC_BDINFO_MAGIC);
 829
 830         if (load_fw_file)
 831                 qlcnic_request_firmware(adapter);
 832         else {
 833                 if (qlcnic_check_flash_fw_ver(adapter))
 834                         goto err_out;
 835
 836                 adapter->fw_type = QLCNIC_FLASH_ROMIMAGE;
 837         }
 838
 839         err = qlcnic_need_fw_reset(adapter);
 840         if (err < 0)
 841                 goto err_out;
 842         if (err == 0)
 843                 goto wait_init;
 844
 845         if (first_boot != 0x55555555) {
 846                 QLCWR32(adapter, CRB_CMDPEG_STATE, 0);
 847                 QLCWR32(adapter, CRB_RCVPEG_STATE, 0);
 848                 qlcnic_pinit_from_rom(adapter);
 849                 msleep(1);
 850         }
 851
 852         QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS1, 0);
 853         QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS2, 0);
 854
 855         qlcnic_set_port_mode(adapter);
 856
 857         err = qlcnic_load_firmware(adapter);
 858         if (err)
 859                 goto err_out;
 860
 861         qlcnic_release_firmware(adapter);
 862
 863         val = (_QLCNIC_LINUX_MAJOR << 16)
 864                 | ((_QLCNIC_LINUX_MINOR << 8))
 865                 | (_QLCNIC_LINUX_SUBVERSION);
 866         QLCWR32(adapter, CRB_DRIVER_VERSION, val);
 867
 868 wait_init:
 869         /* Handshake with the card before we register the devices. */
 870         err = qlcnic_init_firmware(adapter);
 871         if (err)
 872                 goto err_out;
 873
 874         QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_READY);
 875         qlcnic_idc_debug_info(adapter, 1);
 876
 877         qlcnic_check_options(adapter);
 878         if (qlcnic_reset_npar_config(adapter))
 879                 goto err_out;
 880         qlcnic_dev_set_npar_ready(adapter);
 881
 882         adapter->need_fw_reset = 0;
 883
 884         qlcnic_release_firmware(adapter);
 885         return 0;
 886
 887 err_out:
 888         QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_FAILED);
 889         dev_err(&adapter->pdev->dev, "Device state set to failed\n");
 890         qlcnic_release_firmware(adapter);
 891         return err;
 892 }
 893
 894 static int
 895 qlcnic_request_irq(struct qlcnic_adapter *adapter)
 896 {
 897         irq_handler_t handler;
 898         struct qlcnic_host_sds_ring *sds_ring;
 899         int err, ring;
 900
 901         unsigned long flags = 0;
 902         struct net_device *netdev = adapter->netdev;
 903         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 904
 905         if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
 906                 handler = qlcnic_tmp_intr;
 907                 if (!QLCNIC_IS_MSI_FAMILY(adapter))
 908                         flags |= IRQF_SHARED;
 909
 910         } else {
 911                 if (adapter->flags & QLCNIC_MSIX_ENABLED)
 912                         handler = qlcnic_msix_intr;
 913                 else if (adapter->flags & QLCNIC_MSI_ENABLED)
 914                         handler = qlcnic_msi_intr;
 915                 else {
 916                         flags |= IRQF_SHARED;
 917                         handler = qlcnic_intr;
 918                 }
 919         }
 920         adapter->irq = netdev->irq;
 921
 922         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 923                 sds_ring = &recv_ctx->sds_rings[ring];
 924                 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
 925                 err = request_irq(sds_ring->irq, handler,
 926                                   flags, sds_ring->name, sds_ring);
 927                 if (err)
 928                         return err;
 929         }
 930
 931         return 0;
 932 }
 933
 934 static void
 935 qlcnic_free_irq(struct qlcnic_adapter *adapter)
 936 {
 937         int ring;
 938         struct qlcnic_host_sds_ring *sds_ring;
 939
 940         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 941
 942         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 943                 sds_ring = &recv_ctx->sds_rings[ring];
 944                 free_irq(sds_ring->irq, sds_ring);
 945         }
 946 }
 947
 948 static void
 949 qlcnic_init_coalesce_defaults(struct qlcnic_adapter *adapter)
 950 {
 951         adapter->coal.flags = QLCNIC_INTR_DEFAULT;
 952         adapter->coal.normal.data.rx_time_us =
 953                 QLCNIC_DEFAULT_INTR_COALESCE_RX_TIME_US;
 954         adapter->coal.normal.data.rx_packets =
 955                 QLCNIC_DEFAULT_INTR_COALESCE_RX_PACKETS;
 956         adapter->coal.normal.data.tx_time_us =
 957                 QLCNIC_DEFAULT_INTR_COALESCE_TX_TIME_US;
 958         adapter->coal.normal.data.tx_packets =
 959                 QLCNIC_DEFAULT_INTR_COALESCE_TX_PACKETS;
 960 }
 961
 962 static int
 963 __qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
 964 {
 965         int ring;
 966         struct qlcnic_host_rds_ring *rds_ring;
 967
 968         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
 969                 return -EIO;
 970
 971         if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
 972                 return 0;
 973
 974         if (qlcnic_fw_create_ctx(adapter))
 975                 return -EIO;
 976
 977         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 978                 rds_ring = &adapter->recv_ctx.rds_rings[ring];
 979                 qlcnic_post_rx_buffers(adapter, ring, rds_ring);
 980         }
 981
 982         qlcnic_set_multi(netdev);
 983         qlcnic_fw_cmd_set_mtu(adapter, netdev->mtu);
 984
 985         adapter->ahw.linkup = 0;
 986
 987         if (adapter->max_sds_rings > 1)
 988                 qlcnic_config_rss(adapter, 1);
 989
 990         qlcnic_config_intr_coalesce(adapter);
 991
 992         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
 993                 qlcnic_config_hw_lro(adapter, QLCNIC_LRO_ENABLED);
 994
 995         qlcnic_napi_enable(adapter);
 996
 997         qlcnic_linkevent_request(adapter, 1);
 998
 999         adapter->reset_context = 0;
1000         set_bit(__QLCNIC_DEV_UP, &adapter->state);
1001         return 0;
1002 }
1003
1004 /* Usage: During resume and firmware recovery module.*/
1005
1006 static int
1007 qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
1008 {
1009         int err = 0;
1010
1011         rtnl_lock();
1012         if (netif_running(netdev))
1013                 err = __qlcnic_up(adapter, netdev);
1014         rtnl_unlock();
1015
1016         return err;
1017 }
1018
1019 static void
1020 __qlcnic_down(struct qlcnic_adapter *adapter, struct net_device *netdev)
1021 {
1022         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
1023                 return;
1024
1025         if (!test_and_clear_bit(__QLCNIC_DEV_UP, &adapter->state))
1026                 return;
1027
1028         smp_mb();
1029         spin_lock(&adapter->tx_clean_lock);
1030         netif_carrier_off(netdev);
1031         netif_tx_disable(netdev);
1032
1033         qlcnic_free_mac_list(adapter);
1034
1035         qlcnic_nic_set_promisc(adapter, QLCNIC_NIU_NON_PROMISC_MODE);
1036
1037         qlcnic_napi_disable(adapter);
1038
1039         qlcnic_fw_destroy_ctx(adapter);
1040
1041         qlcnic_reset_rx_buffers_list(adapter);
1042         qlcnic_release_tx_buffers(adapter);
1043         spin_unlock(&adapter->tx_clean_lock);
1044 }
1045
1046 /* Usage: During suspend and firmware recovery module */
1047
1048 static void
1049 qlcnic_down(struct qlcnic_adapter *adapter, struct net_device *netdev)
1050 {
1051         rtnl_lock();
1052         if (netif_running(netdev))
1053                 __qlcnic_down(adapter, netdev);
1054         rtnl_unlock();
1055
1056 }
1057
1058 static int
1059 qlcnic_attach(struct qlcnic_adapter *adapter)
1060 {
1061         struct net_device *netdev = adapter->netdev;
1062         struct pci_dev *pdev = adapter->pdev;
1063         int err;
1064
1065         if (adapter->is_up == QLCNIC_ADAPTER_UP_MAGIC)
1066                 return 0;
1067
1068         err = qlcnic_napi_add(adapter, netdev);
1069         if (err)
1070                 return err;
1071
1072         err = qlcnic_alloc_sw_resources(adapter);
1073         if (err) {
1074                 dev_err(&pdev->dev, "Error in setting sw resources\n");
1075                 goto err_out_napi_del;
1076         }
1077
1078         err = qlcnic_alloc_hw_resources(adapter);
1079         if (err) {
1080                 dev_err(&pdev->dev, "Error in setting hw resources\n");
1081                 goto err_out_free_sw;
1082         }
1083
1084         err = qlcnic_request_irq(adapter);
1085         if (err) {
1086                 dev_err(&pdev->dev, "failed to setup interrupt\n");
1087                 goto err_out_free_hw;
1088         }
1089
1090         qlcnic_init_coalesce_defaults(adapter);
1091
1092         qlcnic_create_sysfs_entries(adapter);
1093
1094         adapter->is_up = QLCNIC_ADAPTER_UP_MAGIC;
1095         return 0;
1096
1097 err_out_free_hw:
1098         qlcnic_free_hw_resources(adapter);
1099 err_out_free_sw:
1100         qlcnic_free_sw_resources(adapter);
1101 err_out_napi_del:
1102         qlcnic_napi_del(adapter);
1103         return err;
1104 }
1105
1106 static void
1107 qlcnic_detach(struct qlcnic_adapter *adapter)
1108 {
1109         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
1110                 return;
1111
1112         qlcnic_remove_sysfs_entries(adapter);
1113
1114         qlcnic_free_hw_resources(adapter);
1115         qlcnic_release_rx_buffers(adapter);
1116         qlcnic_free_irq(adapter);
1117         qlcnic_napi_del(adapter);
1118         qlcnic_free_sw_resources(adapter);
1119
1120         adapter->is_up = 0;
1121 }
1122
1123 void qlcnic_diag_free_res(struct net_device *netdev, int max_sds_rings)
1124 {
1125         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1126         struct qlcnic_host_sds_ring *sds_ring;
1127         int ring;
1128
1129         clear_bit(__QLCNIC_DEV_UP, &adapter->state);
1130         if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
1131                 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1132                         sds_ring = &adapter->recv_ctx.sds_rings[ring];
1133                         qlcnic_disable_int(sds_ring);
1134                 }
1135         }
1136
1137         qlcnic_fw_destroy_ctx(adapter);
1138
1139         qlcnic_detach(adapter);
1140
1141         adapter->diag_test = 0;
1142         adapter->max_sds_rings = max_sds_rings;
1143
1144         if (qlcnic_attach(adapter))
1145                 goto out;
1146
1147         if (netif_running(netdev))
1148                 __qlcnic_up(adapter, netdev);
1149 out:
1150         netif_device_attach(netdev);
1151 }
1152
1153 int qlcnic_diag_alloc_res(struct net_device *netdev, int test)
1154 {
1155         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1156         struct qlcnic_host_sds_ring *sds_ring;
1157         struct qlcnic_host_rds_ring *rds_ring;
1158         int ring;
1159         int ret;
1160
1161         netif_device_detach(netdev);
1162
1163         if (netif_running(netdev))
1164                 __qlcnic_down(adapter, netdev);
1165
1166         qlcnic_detach(adapter);
1167
1168         adapter->max_sds_rings = 1;
1169         adapter->diag_test = test;
1170
1171         ret = qlcnic_attach(adapter);
1172         if (ret) {
1173                 netif_device_attach(netdev);
1174                 return ret;
1175         }
1176
1177         ret = qlcnic_fw_create_ctx(adapter);
1178         if (ret) {
1179                 qlcnic_detach(adapter);
1180                 netif_device_attach(netdev);
1181                 return ret;
1182         }
1183
1184         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1185                 rds_ring = &adapter->recv_ctx.rds_rings[ring];
1186                 qlcnic_post_rx_buffers(adapter, ring, rds_ring);
1187         }
1188
1189         if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
1190                 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1191                         sds_ring = &adapter->recv_ctx.sds_rings[ring];
1192                         qlcnic_enable_int(sds_ring);
1193                 }
1194         }
1195         set_bit(__QLCNIC_DEV_UP, &adapter->state);
1196
1197         return 0;
1198 }
1199
1200 /* Reset context in hardware only */
1201 static int
1202 qlcnic_reset_hw_context(struct qlcnic_adapter *adapter)
1203 {
1204         struct net_device *netdev = adapter->netdev;
1205
1206         if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
1207                 return -EBUSY;
1208
1209         netif_device_detach(netdev);
1210
1211         qlcnic_down(adapter, netdev);
1212
1213         qlcnic_up(adapter, netdev);
1214
1215         netif_device_attach(netdev);
1216
1217         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1218         return 0;
1219 }
1220
1221 int
1222 qlcnic_reset_context(struct qlcnic_adapter *adapter)
1223 {
1224         int err = 0;
1225         struct net_device *netdev = adapter->netdev;
1226
1227         if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
1228                 return -EBUSY;
1229
1230         if (adapter->is_up == QLCNIC_ADAPTER_UP_MAGIC) {
1231
1232                 netif_device_detach(netdev);
1233
1234                 if (netif_running(netdev))
1235                         __qlcnic_down(adapter, netdev);
1236
1237                 qlcnic_detach(adapter);
1238
1239                 if (netif_running(netdev)) {
1240                         err = qlcnic_attach(adapter);
1241                         if (!err)
1242                                 __qlcnic_up(adapter, netdev);
1243                 }
1244
1245                 netif_device_attach(netdev);
1246         }
1247
1248         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1249         return err;
1250 }
1251
1252 static int
1253 qlcnic_setup_netdev(struct qlcnic_adapter *adapter,
1254                 struct net_device *netdev, u8 pci_using_dac)
1255 {
1256         int err;
1257         struct pci_dev *pdev = adapter->pdev;
1258
1259         adapter->rx_csum = 1;
1260         adapter->mc_enabled = 0;
1261         adapter->max_mc_count = 38;
1262
1263         netdev->netdev_ops         = &qlcnic_netdev_ops;
1264         netdev->watchdog_timeo     = 5*HZ;
1265
1266         qlcnic_change_mtu(netdev, netdev->mtu);
1267
1268         SET_ETHTOOL_OPS(netdev, &qlcnic_ethtool_ops);
1269
1270         netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM |
1271                 NETIF_F_IPV6_CSUM | NETIF_F_GRO);
1272         netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM |
1273                 NETIF_F_IPV6_CSUM);
1274
1275         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_TSO) {
1276                 netdev->features |= (NETIF_F_TSO | NETIF_F_TSO6);
1277                 netdev->vlan_features |= (NETIF_F_TSO | NETIF_F_TSO6);
1278         }
1279
1280         if (pci_using_dac) {
1281                 netdev->features |= NETIF_F_HIGHDMA;
1282                 netdev->vlan_features |= NETIF_F_HIGHDMA;
1283         }
1284
1285         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_FVLANTX)
1286                 netdev->features |= (NETIF_F_HW_VLAN_TX);
1287
1288         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
1289                 netdev->features |= NETIF_F_LRO;
1290
1291         netdev->irq = adapter->msix_entries[0].vector;
1292
1293         if (qlcnic_read_mac_addr(adapter))
1294                 dev_warn(&pdev->dev, "failed to read mac addr\n");
1295
1296         netif_carrier_off(netdev);
1297         netif_stop_queue(netdev);
1298
1299         err = register_netdev(netdev);
1300         if (err) {
1301                 dev_err(&pdev->dev, "failed to register net device\n");
1302                 return err;
1303         }
1304
1305         return 0;
1306 }
1307
1308 static int qlcnic_set_dma_mask(struct pci_dev *pdev, u8 *pci_using_dac)
1309 {
1310         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) &&
1311                         !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
1312                 *pci_using_dac = 1;
1313         else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) &&
1314                         !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
1315                 *pci_using_dac = 0;
1316         else {
1317                 dev_err(&pdev->dev, "Unable to set DMA mask, aborting\n");
1318                 return -EIO;
1319         }
1320
1321         return 0;
1322 }
1323
1324 static int __devinit
1325 qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1326 {
1327         struct net_device *netdev = NULL;
1328         struct qlcnic_adapter *adapter = NULL;
1329         int err;
1330         uint8_t revision_id;
1331         uint8_t pci_using_dac;
1332
1333         err = pci_enable_device(pdev);
1334         if (err)
1335                 return err;
1336
1337         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1338                 err = -ENODEV;
1339                 goto err_out_disable_pdev;
1340         }
1341
1342         err = qlcnic_set_dma_mask(pdev, &pci_using_dac);
1343         if (err)
1344                 goto err_out_disable_pdev;
1345
1346         err = pci_request_regions(pdev, qlcnic_driver_name);
1347         if (err)
1348                 goto err_out_disable_pdev;
1349
1350         pci_set_master(pdev);
1351         pci_enable_pcie_error_reporting(pdev);
1352
1353         netdev = alloc_etherdev(sizeof(struct qlcnic_adapter));
1354         if (!netdev) {
1355                 dev_err(&pdev->dev, "failed to allocate net_device\n");
1356                 err = -ENOMEM;
1357                 goto err_out_free_res;
1358         }
1359
1360         SET_NETDEV_DEV(netdev, &pdev->dev);
1361
1362         adapter = netdev_priv(netdev);
1363         adapter->netdev  = netdev;
1364         adapter->pdev    = pdev;
1365         adapter->dev_rst_time = jiffies;
1366
1367         revision_id = pdev->revision;
1368         adapter->ahw.revision_id = revision_id;
1369
1370         rwlock_init(&adapter->ahw.crb_lock);
1371         mutex_init(&adapter->ahw.mem_lock);
1372
1373         spin_lock_init(&adapter->tx_clean_lock);
1374         INIT_LIST_HEAD(&adapter->mac_list);
1375
1376         err = qlcnic_setup_pci_map(adapter);
1377         if (err)
1378                 goto err_out_free_netdev;
1379
1380         /* This will be reset for mezz cards  */
1381         adapter->portnum = adapter->ahw.pci_func;
1382
1383         err = qlcnic_get_board_info(adapter);
1384         if (err) {
1385                 dev_err(&pdev->dev, "Error getting board config info.\n");
1386                 goto err_out_iounmap;
1387         }
1388
1389         if (qlcnic_read_mac_addr(adapter))
1390                 dev_warn(&pdev->dev, "failed to read mac addr\n");
1391
1392         if (qlcnic_setup_idc_param(adapter))
1393                 goto err_out_iounmap;
1394
1395         err = adapter->nic_ops->start_firmware(adapter);
1396         if (err) {
1397                 dev_err(&pdev->dev, "Loading fw failed.Please Reboot\n");
1398                 goto err_out_decr_ref;
1399         }
1400
1401         qlcnic_clear_stats(adapter);
1402
1403         qlcnic_setup_intr(adapter);
1404
1405         err = qlcnic_setup_netdev(adapter, netdev, pci_using_dac);
1406         if (err)
1407                 goto err_out_disable_msi;
1408
1409         pci_set_drvdata(pdev, adapter);
1410
1411         qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
1412
1413         switch (adapter->ahw.port_type) {
1414         case QLCNIC_GBE:
1415                 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1416                                 adapter->netdev->name);
1417                 break;
1418         case QLCNIC_XGBE:
1419                 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1420                                 adapter->netdev->name);
1421                 break;
1422         }
1423
1424         qlcnic_create_diag_entries(adapter);
1425
1426         return 0;
1427
1428 err_out_disable_msi:
1429         qlcnic_teardown_intr(adapter);
1430
1431 err_out_decr_ref:
1432         qlcnic_clr_all_drv_state(adapter);
1433
1434 err_out_iounmap:
1435         qlcnic_cleanup_pci_map(adapter);
1436
1437 err_out_free_netdev:
1438         free_netdev(netdev);
1439
1440 err_out_free_res:
1441         pci_release_regions(pdev);
1442
1443 err_out_disable_pdev:
1444         pci_set_drvdata(pdev, NULL);
1445         pci_disable_device(pdev);
1446         return err;
1447 }
1448
1449 static void __devexit qlcnic_remove(struct pci_dev *pdev)
1450 {
1451         struct qlcnic_adapter *adapter;
1452         struct net_device *netdev;
1453
1454         adapter = pci_get_drvdata(pdev);
1455         if (adapter == NULL)
1456                 return;
1457
1458         netdev = adapter->netdev;
1459
1460         qlcnic_cancel_fw_work(adapter);
1461
1462         unregister_netdev(netdev);
1463
1464         qlcnic_detach(adapter);
1465
1466         if (adapter->npars != NULL)
1467                 kfree(adapter->npars);
1468         if (adapter->eswitch != NULL)
1469                 kfree(adapter->eswitch);
1470
1471         qlcnic_clr_all_drv_state(adapter);
1472
1473         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1474
1475         qlcnic_teardown_intr(adapter);
1476
1477         qlcnic_remove_diag_entries(adapter);
1478
1479         qlcnic_cleanup_pci_map(adapter);
1480
1481         qlcnic_release_firmware(adapter);
1482
1483         pci_disable_pcie_error_reporting(pdev);
1484         pci_release_regions(pdev);
1485         pci_disable_device(pdev);
1486         pci_set_drvdata(pdev, NULL);
1487
1488         free_netdev(netdev);
1489 }
1490 static int __qlcnic_shutdown(struct pci_dev *pdev)
1491 {
1492         struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
1493         struct net_device *netdev = adapter->netdev;
1494         int retval;
1495
1496         netif_device_detach(netdev);
1497
1498         qlcnic_cancel_fw_work(adapter);
1499
1500         if (netif_running(netdev))
1501                 qlcnic_down(adapter, netdev);
1502
1503         qlcnic_clr_all_drv_state(adapter);
1504
1505         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1506
1507         retval = pci_save_state(pdev);
1508         if (retval)
1509                 return retval;
1510
1511         if (qlcnic_wol_supported(adapter)) {
1512                 pci_enable_wake(pdev, PCI_D3cold, 1);
1513                 pci_enable_wake(pdev, PCI_D3hot, 1);
1514         }
1515
1516         return 0;
1517 }
1518
1519 static void qlcnic_shutdown(struct pci_dev *pdev)
1520 {
1521         if (__qlcnic_shutdown(pdev))
1522                 return;
1523
1524         pci_disable_device(pdev);
1525 }
1526
1527 #ifdef CONFIG_PM
1528 static int
1529 qlcnic_suspend(struct pci_dev *pdev, pm_message_t state)
1530 {
1531         int retval;
1532
1533         retval = __qlcnic_shutdown(pdev);
1534         if (retval)
1535                 return retval;
1536
1537         pci_set_power_state(pdev, pci_choose_state(pdev, state));
1538         return 0;
1539 }
1540
1541 static int
1542 qlcnic_resume(struct pci_dev *pdev)
1543 {
1544         struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
1545         struct net_device *netdev = adapter->netdev;
1546         int err;
1547
1548         err = pci_enable_device(pdev);
1549         if (err)
1550                 return err;
1551
1552         pci_set_power_state(pdev, PCI_D0);
1553         pci_set_master(pdev);
1554         pci_restore_state(pdev);
1555
1556         err = adapter->nic_ops->start_firmware(adapter);
1557         if (err) {
1558                 dev_err(&pdev->dev, "failed to start firmware\n");
1559                 return err;
1560         }
1561
1562         if (netif_running(netdev)) {
1563                 err = qlcnic_up(adapter, netdev);
1564                 if (err)
1565                         goto done;
1566
1567                 qlcnic_config_indev_addr(netdev, NETDEV_UP);
1568         }
1569 done:
1570         netif_device_attach(netdev);
1571         qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
1572         return 0;
1573 }
1574 #endif
1575
1576 static int qlcnic_open(struct net_device *netdev)
1577 {
1578         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1579         int err;
1580
1581         if (adapter->driver_mismatch)
1582                 return -EIO;
1583
1584         err = qlcnic_attach(adapter);
1585         if (err)
1586                 return err;
1587
1588         err = __qlcnic_up(adapter, netdev);
1589         if (err)
1590                 goto err_out;
1591
1592         netif_start_queue(netdev);
1593
1594         return 0;
1595
1596 err_out:
1597         qlcnic_detach(adapter);
1598         return err;
1599 }
1600
1601 /*
1602  * qlcnic_close - Disables a network interface entry point
1603  */
1604 static int qlcnic_close(struct net_device *netdev)
1605 {
1606         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1607
1608         __qlcnic_down(adapter, netdev);
1609         return 0;
1610 }
1611
1612 static void
1613 qlcnic_tso_check(struct net_device *netdev,
1614                 struct qlcnic_host_tx_ring *tx_ring,
1615                 struct cmd_desc_type0 *first_desc,
1616                 struct sk_buff *skb)
1617 {
1618         u8 opcode = TX_ETHER_PKT;
1619         __be16 protocol = skb->protocol;
1620         u16 flags = 0, vid = 0;
1621         int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1622         struct cmd_desc_type0 *hwdesc;
1623         struct vlan_ethhdr *vh;
1624         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1625         u32 producer = tx_ring->producer;
1626
1627         if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1628
1629                 vh = (struct vlan_ethhdr *)skb->data;
1630                 protocol = vh->h_vlan_encapsulated_proto;
1631                 flags = FLAGS_VLAN_TAGGED;
1632
1633         } else if (vlan_tx_tag_present(skb)) {
1634
1635                 flags = FLAGS_VLAN_OOB;
1636                 vid = vlan_tx_tag_get(skb);
1637                 qlcnic_set_tx_vlan_tci(first_desc, vid);
1638                 vlan_oob = 1;
1639         }
1640
1641         if (*(skb->data) & BIT_0) {
1642                 flags |= BIT_0;
1643                 memcpy(&first_desc->eth_addr, skb->data, ETH_ALEN);
1644         }
1645
1646         if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1647                         skb_shinfo(skb)->gso_size > 0) {
1648
1649                 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1650
1651                 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1652                 first_desc->total_hdr_length = hdr_len;
1653                 if (vlan_oob) {
1654                         first_desc->total_hdr_length += VLAN_HLEN;
1655                         first_desc->tcp_hdr_offset = VLAN_HLEN;
1656                         first_desc->ip_hdr_offset = VLAN_HLEN;
1657                         /* Only in case of TSO on vlan device */
1658                         flags |= FLAGS_VLAN_TAGGED;
1659                 }
1660
1661                 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1662                                 TX_TCP_LSO6 : TX_TCP_LSO;
1663                 tso = 1;
1664
1665         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1666                 u8 l4proto;
1667
1668                 if (protocol == cpu_to_be16(ETH_P_IP)) {
1669                         l4proto = ip_hdr(skb)->protocol;
1670
1671                         if (l4proto == IPPROTO_TCP)
1672                                 opcode = TX_TCP_PKT;
1673                         else if (l4proto == IPPROTO_UDP)
1674                                 opcode = TX_UDP_PKT;
1675                 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1676                         l4proto = ipv6_hdr(skb)->nexthdr;
1677
1678                         if (l4proto == IPPROTO_TCP)
1679                                 opcode = TX_TCPV6_PKT;
1680                         else if (l4proto == IPPROTO_UDP)
1681                                 opcode = TX_UDPV6_PKT;
1682                 }
1683         }
1684
1685         first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1686         first_desc->ip_hdr_offset += skb_network_offset(skb);
1687         qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
1688
1689         if (!tso)
1690                 return;
1691
1692         /* For LSO, we need to copy the MAC/IP/TCP headers into
1693          * the descriptor ring
1694          */
1695         copied = 0;
1696         offset = 2;
1697
1698         if (vlan_oob) {
1699                 /* Create a TSO vlan header template for firmware */
1700
1701                 hwdesc = &tx_ring->desc_head[producer];
1702                 tx_ring->cmd_buf_arr[producer].skb = NULL;
1703
1704                 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1705                                 hdr_len + VLAN_HLEN);
1706
1707                 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1708                 skb_copy_from_linear_data(skb, vh, 12);
1709                 vh->h_vlan_proto = htons(ETH_P_8021Q);
1710                 vh->h_vlan_TCI = htons(vid);
1711                 skb_copy_from_linear_data_offset(skb, 12,
1712                                 (char *)vh + 16, copy_len - 16);
1713
1714                 copied = copy_len - VLAN_HLEN;
1715                 offset = 0;
1716
1717                 producer = get_next_index(producer, tx_ring->num_desc);
1718         }
1719
1720         while (copied < hdr_len) {
1721
1722                 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1723                                 (hdr_len - copied));
1724
1725                 hwdesc = &tx_ring->desc_head[producer];
1726                 tx_ring->cmd_buf_arr[producer].skb = NULL;
1727
1728                 skb_copy_from_linear_data_offset(skb, copied,
1729                                  (char *)hwdesc + offset, copy_len);
1730
1731                 copied += copy_len;
1732                 offset = 0;
1733
1734                 producer = get_next_index(producer, tx_ring->num_desc);
1735         }
1736
1737         tx_ring->producer = producer;
1738         barrier();
1739         adapter->stats.lso_frames++;
1740 }
1741
1742 static int
1743 qlcnic_map_tx_skb(struct pci_dev *pdev,
1744                 struct sk_buff *skb, struct qlcnic_cmd_buffer *pbuf)
1745 {
1746         struct qlcnic_skb_frag *nf;
1747         struct skb_frag_struct *frag;
1748         int i, nr_frags;
1749         dma_addr_t map;
1750
1751         nr_frags = skb_shinfo(skb)->nr_frags;
1752         nf = &pbuf->frag_array[0];
1753
1754         map = pci_map_single(pdev, skb->data,
1755                         skb_headlen(skb), PCI_DMA_TODEVICE);
1756         if (pci_dma_mapping_error(pdev, map))
1757                 goto out_err;
1758
1759         nf->dma = map;
1760         nf->length = skb_headlen(skb);
1761
1762         for (i = 0; i < nr_frags; i++) {
1763                 frag = &skb_shinfo(skb)->frags[i];
1764                 nf = &pbuf->frag_array[i+1];
1765
1766                 map = pci_map_page(pdev, frag->page, frag->page_offset,
1767                                 frag->size, PCI_DMA_TODEVICE);
1768                 if (pci_dma_mapping_error(pdev, map))
1769                         goto unwind;
1770
1771                 nf->dma = map;
1772                 nf->length = frag->size;
1773         }
1774
1775         return 0;
1776
1777 unwind:
1778         while (--i >= 0) {
1779                 nf = &pbuf->frag_array[i+1];
1780                 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
1781         }
1782
1783         nf = &pbuf->frag_array[0];
1784         pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1785
1786 out_err:
1787         return -ENOMEM;
1788 }
1789
1790 static inline void
1791 qlcnic_clear_cmddesc(u64 *desc)
1792 {
1793         desc[0] = 0ULL;
1794         desc[2] = 0ULL;
1795 }
1796
1797 netdev_tx_t
1798 qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1799 {
1800         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1801         struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
1802         struct qlcnic_cmd_buffer *pbuf;
1803         struct qlcnic_skb_frag *buffrag;
1804         struct cmd_desc_type0 *hwdesc, *first_desc;
1805         struct pci_dev *pdev;
1806         int i, k;
1807
1808         u32 producer;
1809         int frag_count, no_of_desc;
1810         u32 num_txd = tx_ring->num_desc;
1811
1812         if (!test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
1813                 netif_stop_queue(netdev);
1814                 return NETDEV_TX_BUSY;
1815         }
1816
1817         frag_count = skb_shinfo(skb)->nr_frags + 1;
1818
1819         /* 4 fragments per cmd des */
1820         no_of_desc = (frag_count + 3) >> 2;
1821
1822         if (unlikely(qlcnic_tx_avail(tx_ring) <= TX_STOP_THRESH)) {
1823                 netif_stop_queue(netdev);
1824                 smp_mb();
1825                 if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH)
1826                         netif_start_queue(netdev);
1827                 else {
1828                         adapter->stats.xmit_off++;
1829                         return NETDEV_TX_BUSY;
1830                 }
1831         }
1832
1833         producer = tx_ring->producer;
1834         pbuf = &tx_ring->cmd_buf_arr[producer];
1835
1836         pdev = adapter->pdev;
1837
1838         if (qlcnic_map_tx_skb(pdev, skb, pbuf)) {
1839                 adapter->stats.tx_dma_map_error++;
1840                 goto drop_packet;
1841         }
1842
1843         pbuf->skb = skb;
1844         pbuf->frag_count = frag_count;
1845
1846         first_desc = hwdesc = &tx_ring->desc_head[producer];
1847         qlcnic_clear_cmddesc((u64 *)hwdesc);
1848
1849         qlcnic_set_tx_frags_len(first_desc, frag_count, skb->len);
1850         qlcnic_set_tx_port(first_desc, adapter->portnum);
1851
1852         for (i = 0; i < frag_count; i++) {
1853
1854                 k = i % 4;
1855
1856                 if ((k == 0) && (i > 0)) {
1857                         /* move to next desc.*/
1858                         producer = get_next_index(producer, num_txd);
1859                         hwdesc = &tx_ring->desc_head[producer];
1860                         qlcnic_clear_cmddesc((u64 *)hwdesc);
1861                         tx_ring->cmd_buf_arr[producer].skb = NULL;
1862                 }
1863
1864                 buffrag = &pbuf->frag_array[i];
1865
1866                 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
1867                 switch (k) {
1868                 case 0:
1869                         hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1870                         break;
1871                 case 1:
1872                         hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
1873                         break;
1874                 case 2:
1875                         hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
1876                         break;
1877                 case 3:
1878                         hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
1879                         break;
1880                 }
1881         }
1882
1883         tx_ring->producer = get_next_index(producer, num_txd);
1884
1885         qlcnic_tso_check(netdev, tx_ring, first_desc, skb);
1886
1887         qlcnic_update_cmd_producer(adapter, tx_ring);
1888
1889         adapter->stats.txbytes += skb->len;
1890         adapter->stats.xmitcalled++;
1891
1892         return NETDEV_TX_OK;
1893
1894 drop_packet:
1895         adapter->stats.txdropped++;
1896         dev_kfree_skb_any(skb);
1897         return NETDEV_TX_OK;
1898 }
1899
1900 static int qlcnic_check_temp(struct qlcnic_adapter *adapter)
1901 {
1902         struct net_device *netdev = adapter->netdev;
1903         u32 temp, temp_state, temp_val;
1904         int rv = 0;
1905
1906         temp = QLCRD32(adapter, CRB_TEMP_STATE);
1907
1908         temp_state = qlcnic_get_temp_state(temp);
1909         temp_val = qlcnic_get_temp_val(temp);
1910
1911         if (temp_state == QLCNIC_TEMP_PANIC) {
1912                 dev_err(&netdev->dev,
1913                        "Device temperature %d degrees C exceeds"
1914                        " maximum allowed. Hardware has been shut down.\n",
1915                        temp_val);
1916                 rv = 1;
1917         } else if (temp_state == QLCNIC_TEMP_WARN) {
1918                 if (adapter->temp == QLCNIC_TEMP_NORMAL) {
1919                         dev_err(&netdev->dev,
1920                                "Device temperature %d degrees C "
1921                                "exceeds operating range."
1922                                " Immediate action needed.\n",
1923                                temp_val);
1924                 }
1925         } else {
1926                 if (adapter->temp == QLCNIC_TEMP_WARN) {
1927                         dev_info(&netdev->dev,
1928                                "Device temperature is now %d degrees C"
1929                                " in normal range.\n", temp_val);
1930                 }
1931         }
1932         adapter->temp = temp_state;
1933         return rv;
1934 }
1935
1936 void qlcnic_advert_link_change(struct qlcnic_adapter *adapter, int linkup)
1937 {
1938         struct net_device *netdev = adapter->netdev;
1939
1940         if (adapter->ahw.linkup && !linkup) {
1941                 dev_info(&netdev->dev, "NIC Link is down\n");
1942                 adapter->ahw.linkup = 0;
1943                 if (netif_running(netdev)) {
1944                         netif_carrier_off(netdev);
1945                         netif_stop_queue(netdev);
1946                 }
1947         } else if (!adapter->ahw.linkup && linkup) {
1948                 dev_info(&netdev->dev, "NIC Link is up\n");
1949                 adapter->ahw.linkup = 1;
1950                 if (netif_running(netdev)) {
1951                         netif_carrier_on(netdev);
1952                         netif_wake_queue(netdev);
1953                 }
1954         }
1955 }
1956
1957 static void qlcnic_tx_timeout(struct net_device *netdev)
1958 {
1959         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1960
1961         if (test_bit(__QLCNIC_RESETTING, &adapter->state))
1962                 return;
1963
1964         dev_err(&netdev->dev, "transmit timeout, resetting.\n");
1965
1966         if (++adapter->tx_timeo_cnt >= QLCNIC_MAX_TX_TIMEOUTS)
1967                 adapter->need_fw_reset = 1;
1968         else
1969                 adapter->reset_context = 1;
1970 }
1971
1972 static struct net_device_stats *qlcnic_get_stats(struct net_device *netdev)
1973 {
1974         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1975         struct net_device_stats *stats = &netdev->stats;
1976
1977         memset(stats, 0, sizeof(*stats));
1978
1979         stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
1980         stats->tx_packets = adapter->stats.xmitfinished;
1981         stats->rx_bytes = adapter->stats.rxbytes + adapter->stats.lrobytes;
1982         stats->tx_bytes = adapter->stats.txbytes;
1983         stats->rx_dropped = adapter->stats.rxdropped;
1984         stats->tx_dropped = adapter->stats.txdropped;
1985
1986         return stats;
1987 }
1988
1989 static irqreturn_t qlcnic_clear_legacy_intr(struct qlcnic_adapter *adapter)
1990 {
1991         u32 status;
1992
1993         status = readl(adapter->isr_int_vec);
1994
1995         if (!(status & adapter->int_vec_bit))
1996                 return IRQ_NONE;
1997
1998         /* check interrupt state machine, to be sure */
1999         status = readl(adapter->crb_int_state_reg);
2000         if (!ISR_LEGACY_INT_TRIGGERED(status))
2001                 return IRQ_NONE;
2002
2003         writel(0xffffffff, adapter->tgt_status_reg);
2004         /* read twice to ensure write is flushed */
2005         readl(adapter->isr_int_vec);
2006         readl(adapter->isr_int_vec);
2007
2008         return IRQ_HANDLED;
2009 }
2010
2011 static irqreturn_t qlcnic_tmp_intr(int irq, void *data)
2012 {
2013         struct qlcnic_host_sds_ring *sds_ring = data;
2014         struct qlcnic_adapter *adapter = sds_ring->adapter;
2015
2016         if (adapter->flags & QLCNIC_MSIX_ENABLED)
2017                 goto done;
2018         else if (adapter->flags & QLCNIC_MSI_ENABLED) {
2019                 writel(0xffffffff, adapter->tgt_status_reg);
2020                 goto done;
2021         }
2022
2023         if (qlcnic_clear_legacy_intr(adapter) == IRQ_NONE)
2024                 return IRQ_NONE;
2025
2026 done:
2027         adapter->diag_cnt++;
2028         qlcnic_enable_int(sds_ring);
2029         return IRQ_HANDLED;
2030 }
2031
2032 static irqreturn_t qlcnic_intr(int irq, void *data)
2033 {
2034         struct qlcnic_host_sds_ring *sds_ring = data;
2035         struct qlcnic_adapter *adapter = sds_ring->adapter;
2036
2037         if (qlcnic_clear_legacy_intr(adapter) == IRQ_NONE)
2038                 return IRQ_NONE;
2039
2040         napi_schedule(&sds_ring->napi);
2041
2042         return IRQ_HANDLED;
2043 }
2044
2045 static irqreturn_t qlcnic_msi_intr(int irq, void *data)
2046 {
2047         struct qlcnic_host_sds_ring *sds_ring = data;
2048         struct qlcnic_adapter *adapter = sds_ring->adapter;
2049
2050         /* clear interrupt */
2051         writel(0xffffffff, adapter->tgt_status_reg);
2052
2053         napi_schedule(&sds_ring->napi);
2054         return IRQ_HANDLED;
2055 }
2056
2057 static irqreturn_t qlcnic_msix_intr(int irq, void *data)
2058 {
2059         struct qlcnic_host_sds_ring *sds_ring = data;
2060
2061         napi_schedule(&sds_ring->napi);
2062         return IRQ_HANDLED;
2063 }
2064
2065 static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter)
2066 {
2067         u32 sw_consumer, hw_consumer;
2068         int count = 0, i;
2069         struct qlcnic_cmd_buffer *buffer;
2070         struct pci_dev *pdev = adapter->pdev;
2071         struct net_device *netdev = adapter->netdev;
2072         struct qlcnic_skb_frag *frag;
2073         int done;
2074         struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
2075
2076         if (!spin_trylock(&adapter->tx_clean_lock))
2077                 return 1;
2078
2079         sw_consumer = tx_ring->sw_consumer;
2080         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
2081
2082         while (sw_consumer != hw_consumer) {
2083                 buffer = &tx_ring->cmd_buf_arr[sw_consumer];
2084                 if (buffer->skb) {
2085                         frag = &buffer->frag_array[0];
2086                         pci_unmap_single(pdev, frag->dma, frag->length,
2087                                          PCI_DMA_TODEVICE);
2088                         frag->dma = 0ULL;
2089                         for (i = 1; i < buffer->frag_count; i++) {
2090                                 frag++;
2091                                 pci_unmap_page(pdev, frag->dma, frag->length,
2092                                                PCI_DMA_TODEVICE);
2093                                 frag->dma = 0ULL;
2094                         }
2095
2096                         adapter->stats.xmitfinished++;
2097                         dev_kfree_skb_any(buffer->skb);
2098                         buffer->skb = NULL;
2099                 }
2100
2101                 sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
2102                 if (++count >= MAX_STATUS_HANDLE)
2103                         break;
2104         }
2105
2106         if (count && netif_running(netdev)) {
2107                 tx_ring->sw_consumer = sw_consumer;
2108
2109                 smp_mb();
2110
2111                 if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev)) {
2112                         if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) {
2113                                 netif_wake_queue(netdev);
2114                                 adapter->stats.xmit_on++;
2115                         }
2116                 }
2117                 adapter->tx_timeo_cnt = 0;
2118         }
2119         /*
2120          * If everything is freed up to consumer then check if the ring is full
2121          * If the ring is full then check if more needs to be freed and
2122          * schedule the call back again.
2123          *
2124          * This happens when there are 2 CPUs. One could be freeing and the
2125          * other filling it. If the ring is full when we get out of here and
2126          * the card has already interrupted the host then the host can miss the
2127          * interrupt.
2128          *
2129          * There is still a possible race condition and the host could miss an
2130          * interrupt. The card has to take care of this.
2131          */
2132         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
2133         done = (sw_consumer == hw_consumer);
2134         spin_unlock(&adapter->tx_clean_lock);
2135
2136         return done;
2137 }
2138
2139 static int qlcnic_poll(struct napi_struct *napi, int budget)
2140 {
2141         struct qlcnic_host_sds_ring *sds_ring =
2142                 container_of(napi, struct qlcnic_host_sds_ring, napi);
2143
2144         struct qlcnic_adapter *adapter = sds_ring->adapter;
2145
2146         int tx_complete;
2147         int work_done;
2148
2149         tx_complete = qlcnic_process_cmd_ring(adapter);
2150
2151         work_done = qlcnic_process_rcv_ring(sds_ring, budget);
2152
2153         if ((work_done < budget) && tx_complete) {
2154                 napi_complete(&sds_ring->napi);
2155                 if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
2156                         qlcnic_enable_int(sds_ring);
2157         }
2158
2159         return work_done;
2160 }
2161
2162 static int qlcnic_rx_poll(struct napi_struct *napi, int budget)
2163 {
2164         struct qlcnic_host_sds_ring *sds_ring =
2165                 container_of(napi, struct qlcnic_host_sds_ring, napi);
2166
2167         struct qlcnic_adapter *adapter = sds_ring->adapter;
2168         int work_done;
2169
2170         work_done = qlcnic_process_rcv_ring(sds_ring, budget);
2171
2172         if (work_done < budget) {
2173                 napi_complete(&sds_ring->napi);
2174                 if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
2175                         qlcnic_enable_int(sds_ring);
2176         }
2177
2178         return work_done;
2179 }
2180
2181 #ifdef CONFIG_NET_POLL_CONTROLLER
2182 static void qlcnic_poll_controller(struct net_device *netdev)
2183 {
2184         struct qlcnic_adapter *adapter = netdev_priv(netdev);
2185         disable_irq(adapter->irq);
2186         qlcnic_intr(adapter->irq, adapter);
2187         enable_irq(adapter->irq);
2188 }
2189 #endif
2190
2191 static void
2192 qlcnic_idc_debug_info(struct qlcnic_adapter *adapter, u8 encoding)
2193 {
2194         u32 val;
2195
2196         val = adapter->portnum & 0xf;
2197         val |= encoding << 7;
2198         val |= (jiffies - adapter->dev_rst_time) << 8;
2199
2200         QLCWR32(adapter, QLCNIC_CRB_DRV_SCRATCH, val);
2201         adapter->dev_rst_time = jiffies;
2202 }
2203
2204 static int
2205 qlcnic_set_drv_state(struct qlcnic_adapter *adapter, u8 state)
2206 {
2207         u32  val;
2208
2209         WARN_ON(state != QLCNIC_DEV_NEED_RESET &&
2210                         state != QLCNIC_DEV_NEED_QUISCENT);
2211
2212         if (qlcnic_api_lock(adapter))
2213                 return -EIO;
2214
2215         val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2216
2217         if (state == QLCNIC_DEV_NEED_RESET)
2218                 QLC_DEV_SET_RST_RDY(val, adapter->portnum);
2219         else if (state == QLCNIC_DEV_NEED_QUISCENT)
2220                 QLC_DEV_SET_QSCNT_RDY(val, adapter->portnum);
2221
2222         QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2223
2224         qlcnic_api_unlock(adapter);
2225
2226         return 0;
2227 }
2228
2229 static int
2230 qlcnic_clr_drv_state(struct qlcnic_adapter *adapter)
2231 {
2232         u32  val;
2233
2234         if (qlcnic_api_lock(adapter))
2235                 return -EBUSY;
2236
2237         val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2238         QLC_DEV_CLR_RST_QSCNT(val, adapter->portnum);
2239         QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2240
2241         qlcnic_api_unlock(adapter);
2242
2243         return 0;
2244 }
2245
2246 static void
2247 qlcnic_clr_all_drv_state(struct qlcnic_adapter *adapter)
2248 {
2249         u32  val;
2250
2251         if (qlcnic_api_lock(adapter))
2252                 goto err;
2253
2254         val = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
2255         QLC_DEV_CLR_REF_CNT(val, adapter->portnum);
2256         QLCWR32(adapter, QLCNIC_CRB_DEV_REF_COUNT, val);
2257
2258         if (!(val & 0x11111111))
2259                 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_COLD);
2260
2261         val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2262         QLC_DEV_CLR_RST_QSCNT(val, adapter->portnum);
2263         QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2264
2265         qlcnic_api_unlock(adapter);
2266 err:
2267         adapter->fw_fail_cnt = 0;
2268         clear_bit(__QLCNIC_START_FW, &adapter->state);
2269         clear_bit(__QLCNIC_RESETTING, &adapter->state);
2270 }
2271
2272 /* Grab api lock, before checking state */
2273 static int
2274 qlcnic_check_drv_state(struct qlcnic_adapter *adapter)
2275 {
2276         int act, state;
2277
2278         state = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2279         act = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
2280
2281         if (((state & 0x11111111) == (act & 0x11111111)) ||
2282                         ((act & 0x11111111) == ((state >> 1) & 0x11111111)))
2283                 return 0;
2284         else
2285                 return 1;
2286 }
2287
2288 static int qlcnic_check_idc_ver(struct qlcnic_adapter *adapter)
2289 {
2290         u32 val = QLCRD32(adapter, QLCNIC_CRB_DRV_IDC_VER);
2291
2292         if (val != QLCNIC_DRV_IDC_VER) {
2293                 dev_warn(&adapter->pdev->dev, "IDC Version mismatch, driver's"
2294                         " idc ver = %x; reqd = %x\n", QLCNIC_DRV_IDC_VER, val);
2295         }
2296
2297         return 0;
2298 }
2299
2300 static int
2301 qlcnic_can_start_firmware(struct qlcnic_adapter *adapter)
2302 {
2303         u32 val, prev_state;
2304         u8 dev_init_timeo = adapter->dev_init_timeo;
2305         u8 portnum = adapter->portnum;
2306         u8 ret;
2307
2308         if (test_and_clear_bit(__QLCNIC_START_FW, &adapter->state))
2309                 return 1;
2310
2311         if (qlcnic_api_lock(adapter))
2312                 return -1;
2313
2314         val = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
2315         if (!(val & (1 << (portnum * 4)))) {
2316                 QLC_DEV_SET_REF_CNT(val, portnum);
2317                 QLCWR32(adapter, QLCNIC_CRB_DEV_REF_COUNT, val);
2318         }
2319
2320         prev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2321         QLCDB(adapter, HW, "Device state = %u\n", prev_state);
2322
2323         switch (prev_state) {
2324         case QLCNIC_DEV_COLD:
2325                 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_INITIALIZING);
2326                 QLCWR32(adapter, QLCNIC_CRB_DRV_IDC_VER, QLCNIC_DRV_IDC_VER);
2327                 qlcnic_idc_debug_info(adapter, 0);
2328                 qlcnic_api_unlock(adapter);
2329                 return 1;
2330
2331         case QLCNIC_DEV_READY:
2332                 ret = qlcnic_check_idc_ver(adapter);
2333                 qlcnic_api_unlock(adapter);
2334                 return ret;
2335
2336         case QLCNIC_DEV_NEED_RESET:
2337                 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2338                 QLC_DEV_SET_RST_RDY(val, portnum);
2339                 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2340                 break;
2341
2342         case QLCNIC_DEV_NEED_QUISCENT:
2343                 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2344                 QLC_DEV_SET_QSCNT_RDY(val, portnum);
2345                 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2346                 break;
2347
2348         case QLCNIC_DEV_FAILED:
2349                 dev_err(&adapter->pdev->dev, "Device in failed state.\n");
2350                 qlcnic_api_unlock(adapter);
2351                 return -1;
2352
2353         case QLCNIC_DEV_INITIALIZING:
2354         case QLCNIC_DEV_QUISCENT:
2355                 break;
2356         }
2357
2358         qlcnic_api_unlock(adapter);
2359
2360         do {
2361                 msleep(1000);
2362                 prev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2363
2364                 if (prev_state == QLCNIC_DEV_QUISCENT)
2365                         continue;
2366         } while ((prev_state != QLCNIC_DEV_READY) && --dev_init_timeo);
2367
2368         if (!dev_init_timeo) {
2369                 dev_err(&adapter->pdev->dev,
2370                         "Waiting for device to initialize timeout\n");
2371                 return -1;
2372         }
2373
2374         if (qlcnic_api_lock(adapter))
2375                 return -1;
2376
2377         val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2378         QLC_DEV_CLR_RST_QSCNT(val, portnum);
2379         QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2380
2381         ret = qlcnic_check_idc_ver(adapter);
2382         qlcnic_api_unlock(adapter);
2383
2384         return ret;
2385 }
2386
2387 static void
2388 qlcnic_fwinit_work(struct work_struct *work)
2389 {
2390         struct qlcnic_adapter *adapter = container_of(work,
2391                         struct qlcnic_adapter, fw_work.work);
2392         u32 dev_state = 0xf, npar_state;
2393
2394         if (qlcnic_api_lock(adapter))
2395                 goto err_ret;
2396
2397         dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2398         if (dev_state ==  QLCNIC_DEV_QUISCENT) {
2399                 qlcnic_api_unlock(adapter);
2400                 qlcnic_schedule_work(adapter, qlcnic_fwinit_work,
2401                                                 FW_POLL_DELAY * 2);
2402                 return;
2403         }
2404
2405         if (adapter->op_mode == QLCNIC_NON_PRIV_FUNC) {
2406                 npar_state = QLCRD32(adapter, QLCNIC_CRB_DEV_NPAR_STATE);
2407                 if (npar_state == QLCNIC_DEV_NPAR_RDY) {
2408                         qlcnic_api_unlock(adapter);
2409                         goto wait_npar;
2410                 } else {
2411                         qlcnic_schedule_work(adapter, qlcnic_fwinit_work,
2412                                 FW_POLL_DELAY);
2413                         qlcnic_api_unlock(adapter);
2414                         return;
2415                 }
2416         }
2417
2418         if (adapter->fw_wait_cnt++ > adapter->reset_ack_timeo) {
2419                 dev_err(&adapter->pdev->dev, "Reset:Failed to get ack %d sec\n",
2420                                         adapter->reset_ack_timeo);
2421                 goto skip_ack_check;
2422         }
2423
2424         if (!qlcnic_check_drv_state(adapter)) {
2425 skip_ack_check:
2426                 dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2427
2428                 if (dev_state == QLCNIC_DEV_NEED_QUISCENT) {
2429                         QLCWR32(adapter, QLCNIC_CRB_DEV_STATE,
2430                                                 QLCNIC_DEV_QUISCENT);
2431                         qlcnic_schedule_work(adapter, qlcnic_fwinit_work,
2432                                                 FW_POLL_DELAY * 2);
2433                         QLCDB(adapter, DRV, "Quiscing the driver\n");
2434                         qlcnic_idc_debug_info(adapter, 0);
2435
2436                         qlcnic_api_unlock(adapter);
2437                         return;
2438                 }
2439
2440                 if (dev_state == QLCNIC_DEV_NEED_RESET) {
2441                         QLCWR32(adapter, QLCNIC_CRB_DEV_STATE,
2442                                                 QLCNIC_DEV_INITIALIZING);
2443                         set_bit(__QLCNIC_START_FW, &adapter->state);
2444                         QLCDB(adapter, DRV, "Restarting fw\n");
2445                         qlcnic_idc_debug_info(adapter, 0);
2446                 }
2447
2448                 qlcnic_api_unlock(adapter);
2449
2450                 if (!adapter->nic_ops->start_firmware(adapter)) {
2451                         qlcnic_schedule_work(adapter, qlcnic_attach_work, 0);
2452                         return;
2453                 }
2454                 goto err_ret;
2455         }
2456
2457         qlcnic_api_unlock(adapter);
2458
2459 wait_npar:
2460         dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2461         QLCDB(adapter, HW, "Func waiting: Device state=%u\n", dev_state);
2462
2463         switch (dev_state) {
2464         case QLCNIC_DEV_QUISCENT:
2465         case QLCNIC_DEV_NEED_QUISCENT:
2466         case QLCNIC_DEV_NEED_RESET:
2467                 qlcnic_schedule_work(adapter,
2468                         qlcnic_fwinit_work, FW_POLL_DELAY);
2469                 return;
2470         case QLCNIC_DEV_FAILED:
2471                 break;
2472
2473         default:
2474                 if (!adapter->nic_ops->start_firmware(adapter)) {
2475                         qlcnic_schedule_work(adapter, qlcnic_attach_work, 0);
2476                         return;
2477                 }
2478         }
2479
2480 err_ret:
2481         dev_err(&adapter->pdev->dev, "Fwinit work failed state=%u "
2482                 "fw_wait_cnt=%u\n", dev_state, adapter->fw_wait_cnt);
2483         netif_device_attach(adapter->netdev);
2484         qlcnic_clr_all_drv_state(adapter);
2485 }
2486
2487 static void
2488 qlcnic_detach_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         u32 status;
2494
2495         netif_device_detach(netdev);
2496
2497         qlcnic_down(adapter, netdev);
2498
2499         status = QLCRD32(adapter, QLCNIC_PEG_HALT_STATUS1);
2500
2501         if (status & QLCNIC_RCODE_FATAL_ERROR)
2502                 goto err_ret;
2503
2504         if (adapter->temp == QLCNIC_TEMP_PANIC)
2505                 goto err_ret;
2506
2507         if (qlcnic_set_drv_state(adapter, adapter->dev_state))
2508                 goto err_ret;
2509
2510         adapter->fw_wait_cnt = 0;
2511
2512         qlcnic_schedule_work(adapter, qlcnic_fwinit_work, FW_POLL_DELAY);
2513
2514         return;
2515
2516 err_ret:
2517         dev_err(&adapter->pdev->dev, "detach failed; status=%d temp=%d\n",
2518                         status, adapter->temp);
2519         netif_device_attach(netdev);
2520         qlcnic_clr_all_drv_state(adapter);
2521
2522 }
2523
2524 /*Transit to RESET state from READY state only */
2525 static void
2526 qlcnic_dev_request_reset(struct qlcnic_adapter *adapter)
2527 {
2528         u32 state;
2529
2530         adapter->need_fw_reset = 1;
2531         if (qlcnic_api_lock(adapter))
2532                 return;
2533
2534         state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2535
2536         if (state == QLCNIC_DEV_READY) {
2537                 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_NEED_RESET);
2538                 QLCDB(adapter, DRV, "NEED_RESET state set\n");
2539                 qlcnic_idc_debug_info(adapter, 0);
2540         }
2541
2542         qlcnic_api_unlock(adapter);
2543 }
2544
2545 /* Transit to NPAR READY state from NPAR NOT READY state */
2546 static void
2547 qlcnic_dev_set_npar_ready(struct qlcnic_adapter *adapter)
2548 {
2549         u32 state;
2550
2551         if (!(adapter->flags & QLCNIC_ESWITCH_ENABLED) ||
2552                 adapter->op_mode == QLCNIC_NON_PRIV_FUNC)
2553                 return;
2554         if (qlcnic_api_lock(adapter))
2555                 return;
2556
2557         state = QLCRD32(adapter, QLCNIC_CRB_DEV_NPAR_STATE);
2558
2559         if (state != QLCNIC_DEV_NPAR_RDY) {
2560                 QLCWR32(adapter, QLCNIC_CRB_DEV_NPAR_STATE,
2561                         QLCNIC_DEV_NPAR_RDY);
2562                 QLCDB(adapter, DRV, "NPAR READY state set\n");
2563         }
2564
2565         qlcnic_api_unlock(adapter);
2566 }
2567
2568 static void
2569 qlcnic_schedule_work(struct qlcnic_adapter *adapter,
2570                 work_func_t func, int delay)
2571 {
2572         if (test_bit(__QLCNIC_AER, &adapter->state))
2573                 return;
2574
2575         INIT_DELAYED_WORK(&adapter->fw_work, func);
2576         schedule_delayed_work(&adapter->fw_work, round_jiffies_relative(delay));
2577 }
2578
2579 static void
2580 qlcnic_cancel_fw_work(struct qlcnic_adapter *adapter)
2581 {
2582         while (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
2583                 msleep(10);
2584
2585         cancel_delayed_work_sync(&adapter->fw_work);
2586 }
2587
2588 static void
2589 qlcnic_attach_work(struct work_struct *work)
2590 {
2591         struct qlcnic_adapter *adapter = container_of(work,
2592                                 struct qlcnic_adapter, fw_work.work);
2593         struct net_device *netdev = adapter->netdev;
2594
2595         if (netif_running(netdev)) {
2596                 if (qlcnic_up(adapter, netdev))
2597                         goto done;
2598
2599                 qlcnic_config_indev_addr(netdev, NETDEV_UP);
2600         }
2601
2602 done:
2603         netif_device_attach(netdev);
2604         adapter->fw_fail_cnt = 0;
2605         clear_bit(__QLCNIC_RESETTING, &adapter->state);
2606
2607         if (!qlcnic_clr_drv_state(adapter))
2608                 qlcnic_schedule_work(adapter, qlcnic_fw_poll_work,
2609                                                         FW_POLL_DELAY);
2610 }
2611
2612 static int
2613 qlcnic_check_health(struct qlcnic_adapter *adapter)
2614 {
2615         u32 state = 0, heartbit;
2616         struct net_device *netdev = adapter->netdev;
2617
2618         if (qlcnic_check_temp(adapter))
2619                 goto detach;
2620
2621         if (adapter->need_fw_reset)
2622                 qlcnic_dev_request_reset(adapter);
2623
2624         state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2625         if (state == QLCNIC_DEV_NEED_RESET || state == QLCNIC_DEV_NEED_QUISCENT)
2626                 adapter->need_fw_reset = 1;
2627
2628         heartbit = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
2629         if (heartbit != adapter->heartbit) {
2630                 adapter->heartbit = heartbit;
2631                 adapter->fw_fail_cnt = 0;
2632                 if (adapter->need_fw_reset)
2633                         goto detach;
2634
2635                 if (adapter->reset_context &&
2636                     auto_fw_reset == AUTO_FW_RESET_ENABLED) {
2637                         qlcnic_reset_hw_context(adapter);
2638                         adapter->netdev->trans_start = jiffies;
2639                 }
2640
2641                 return 0;
2642         }
2643
2644         if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2645                 return 0;
2646
2647         qlcnic_dev_request_reset(adapter);
2648
2649         if ((auto_fw_reset == AUTO_FW_RESET_ENABLED))
2650                 clear_bit(__QLCNIC_FW_ATTACHED, &adapter->state);
2651
2652         dev_info(&netdev->dev, "firmware hang detected\n");
2653
2654 detach:
2655         adapter->dev_state = (state == QLCNIC_DEV_NEED_QUISCENT) ? state :
2656                 QLCNIC_DEV_NEED_RESET;
2657
2658         if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
2659                 !test_and_set_bit(__QLCNIC_RESETTING, &adapter->state)) {
2660
2661                 qlcnic_schedule_work(adapter, qlcnic_detach_work, 0);
2662                 QLCDB(adapter, DRV, "fw recovery scheduled.\n");
2663         }
2664
2665         return 1;
2666 }
2667
2668 static void
2669 qlcnic_fw_poll_work(struct work_struct *work)
2670 {
2671         struct qlcnic_adapter *adapter = container_of(work,
2672                                 struct qlcnic_adapter, fw_work.work);
2673
2674         if (test_bit(__QLCNIC_RESETTING, &adapter->state))
2675                 goto reschedule;
2676
2677
2678         if (qlcnic_check_health(adapter))
2679                 return;
2680
2681 reschedule:
2682         qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
2683 }
2684
2685 static int qlcnic_is_first_func(struct pci_dev *pdev)
2686 {
2687         struct pci_dev *oth_pdev;
2688         int val = pdev->devfn;
2689
2690         while (val-- > 0) {
2691                 oth_pdev = pci_get_domain_bus_and_slot(pci_domain_nr
2692                         (pdev->bus), pdev->bus->number,
2693                         PCI_DEVFN(PCI_SLOT(pdev->devfn), val));
2694                 if (!oth_pdev)
2695                         continue;
2696
2697                 if (oth_pdev->current_state != PCI_D3cold) {
2698                         pci_dev_put(oth_pdev);
2699                         return 0;
2700                 }
2701                 pci_dev_put(oth_pdev);
2702         }
2703         return 1;
2704 }
2705
2706 static int qlcnic_attach_func(struct pci_dev *pdev)
2707 {
2708         int err, first_func;
2709         struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
2710         struct net_device *netdev = adapter->netdev;
2711
2712         pdev->error_state = pci_channel_io_normal;
2713
2714         err = pci_enable_device(pdev);
2715         if (err)
2716                 return err;
2717
2718         pci_set_power_state(pdev, PCI_D0);
2719         pci_set_master(pdev);
2720         pci_restore_state(pdev);
2721
2722         first_func = qlcnic_is_first_func(pdev);
2723
2724         if (qlcnic_api_lock(adapter))
2725                 return -EINVAL;
2726
2727         if (first_func) {
2728                 adapter->need_fw_reset = 1;
2729                 set_bit(__QLCNIC_START_FW, &adapter->state);
2730                 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_INITIALIZING);
2731                 QLCDB(adapter, DRV, "Restarting fw\n");
2732         }
2733         qlcnic_api_unlock(adapter);
2734
2735         err = adapter->nic_ops->start_firmware(adapter);
2736         if (err)
2737                 return err;
2738
2739         qlcnic_clr_drv_state(adapter);
2740         qlcnic_setup_intr(adapter);
2741
2742         if (netif_running(netdev)) {
2743                 err = qlcnic_attach(adapter);
2744                 if (err) {
2745                         qlcnic_clr_all_drv_state(adapter);
2746                         clear_bit(__QLCNIC_AER, &adapter->state);
2747                         netif_device_attach(netdev);
2748                         return err;
2749                 }
2750
2751                 err = qlcnic_up(adapter, netdev);
2752                 if (err)
2753                         goto done;
2754
2755                 qlcnic_config_indev_addr(netdev, NETDEV_UP);
2756         }
2757  done:
2758         netif_device_attach(netdev);
2759         return err;
2760 }
2761
2762 static pci_ers_result_t qlcnic_io_error_detected(struct pci_dev *pdev,
2763                                                 pci_channel_state_t state)
2764 {
2765         struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
2766         struct net_device *netdev = adapter->netdev;
2767
2768         if (state == pci_channel_io_perm_failure)
2769                 return PCI_ERS_RESULT_DISCONNECT;
2770
2771         if (state == pci_channel_io_normal)
2772                 return PCI_ERS_RESULT_RECOVERED;
2773
2774         set_bit(__QLCNIC_AER, &adapter->state);
2775         netif_device_detach(netdev);
2776
2777         cancel_delayed_work_sync(&adapter->fw_work);
2778
2779         if (netif_running(netdev))
2780                 qlcnic_down(adapter, netdev);
2781
2782         qlcnic_detach(adapter);
2783         qlcnic_teardown_intr(adapter);
2784
2785         clear_bit(__QLCNIC_RESETTING, &adapter->state);
2786
2787         pci_save_state(pdev);
2788         pci_disable_device(pdev);
2789
2790         return PCI_ERS_RESULT_NEED_RESET;
2791 }
2792
2793 static pci_ers_result_t qlcnic_io_slot_reset(struct pci_dev *pdev)
2794 {
2795         return qlcnic_attach_func(pdev) ? PCI_ERS_RESULT_DISCONNECT :
2796                                 PCI_ERS_RESULT_RECOVERED;
2797 }
2798
2799 static void qlcnic_io_resume(struct pci_dev *pdev)
2800 {
2801         struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
2802
2803         pci_cleanup_aer_uncorrect_error_status(pdev);
2804
2805         if (QLCRD32(adapter, QLCNIC_CRB_DEV_STATE) == QLCNIC_DEV_READY &&
2806             test_and_clear_bit(__QLCNIC_AER, &adapter->state))
2807                 qlcnic_schedule_work(adapter, qlcnic_fw_poll_work,
2808                                                 FW_POLL_DELAY);
2809 }
2810
2811
2812 static int
2813 qlcnicvf_start_firmware(struct qlcnic_adapter *adapter)
2814 {
2815         int err;
2816
2817         err = qlcnic_can_start_firmware(adapter);
2818         if (err)
2819                 return err;
2820
2821         qlcnic_check_options(adapter);
2822
2823         adapter->need_fw_reset = 0;
2824
2825         return err;
2826 }
2827
2828 static int
2829 qlcnicvf_config_bridged_mode(struct qlcnic_adapter *adapter, u32 enable)
2830 {
2831         return -EOPNOTSUPP;
2832 }
2833
2834 static int
2835 qlcnicvf_config_led(struct qlcnic_adapter *adapter, u32 state, u32 rate)
2836 {
2837         return -EOPNOTSUPP;
2838 }
2839
2840 static ssize_t
2841 qlcnic_store_bridged_mode(struct device *dev,
2842                 struct device_attribute *attr, const char *buf, size_t len)
2843 {
2844         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2845         unsigned long new;
2846         int ret = -EINVAL;
2847
2848         if (!(adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG))
2849                 goto err_out;
2850
2851         if (!test_bit(__QLCNIC_DEV_UP, &adapter->state))
2852                 goto err_out;
2853
2854         if (strict_strtoul(buf, 2, &new))
2855                 goto err_out;
2856
2857         if (!adapter->nic_ops->config_bridged_mode(adapter, !!new))
2858                 ret = len;
2859
2860 err_out:
2861         return ret;
2862 }
2863
2864 static ssize_t
2865 qlcnic_show_bridged_mode(struct device *dev,
2866                 struct device_attribute *attr, char *buf)
2867 {
2868         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2869         int bridged_mode = 0;
2870
2871         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
2872                 bridged_mode = !!(adapter->flags & QLCNIC_BRIDGE_ENABLED);
2873
2874         return sprintf(buf, "%d\n", bridged_mode);
2875 }
2876
2877 static struct device_attribute dev_attr_bridged_mode = {
2878        .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2879        .show = qlcnic_show_bridged_mode,
2880        .store = qlcnic_store_bridged_mode,
2881 };
2882
2883 static ssize_t
2884 qlcnic_store_diag_mode(struct device *dev,
2885                 struct device_attribute *attr, const char *buf, size_t len)
2886 {
2887         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2888         unsigned long new;
2889
2890         if (strict_strtoul(buf, 2, &new))
2891                 return -EINVAL;
2892
2893         if (!!new != !!(adapter->flags & QLCNIC_DIAG_ENABLED))
2894                 adapter->flags ^= QLCNIC_DIAG_ENABLED;
2895
2896         return len;
2897 }
2898
2899 static ssize_t
2900 qlcnic_show_diag_mode(struct device *dev,
2901                 struct device_attribute *attr, char *buf)
2902 {
2903         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2904
2905         return sprintf(buf, "%d\n",
2906                         !!(adapter->flags & QLCNIC_DIAG_ENABLED));
2907 }
2908
2909 static struct device_attribute dev_attr_diag_mode = {
2910         .attr = {.name = "diag_mode", .mode = (S_IRUGO | S_IWUSR)},
2911         .show = qlcnic_show_diag_mode,
2912         .store = qlcnic_store_diag_mode,
2913 };
2914
2915 static int
2916 qlcnic_sysfs_validate_crb(struct qlcnic_adapter *adapter,
2917                 loff_t offset, size_t size)
2918 {
2919         size_t crb_size = 4;
2920
2921         if (!(adapter->flags & QLCNIC_DIAG_ENABLED))
2922                 return -EIO;
2923
2924         if (offset < QLCNIC_PCI_CRBSPACE) {
2925                 if (ADDR_IN_RANGE(offset, QLCNIC_PCI_CAMQM,
2926                                         QLCNIC_PCI_CAMQM_END))
2927                         crb_size = 8;
2928                 else
2929                         return -EINVAL;
2930         }
2931
2932         if ((size != crb_size) || (offset & (crb_size-1)))
2933                 return  -EINVAL;
2934
2935         return 0;
2936 }
2937
2938 static ssize_t
2939 qlcnic_sysfs_read_crb(struct file *filp, struct kobject *kobj,
2940                 struct bin_attribute *attr,
2941                 char *buf, loff_t offset, size_t size)
2942 {
2943         struct device *dev = container_of(kobj, struct device, kobj);
2944         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2945         u32 data;
2946         u64 qmdata;
2947         int ret;
2948
2949         ret = qlcnic_sysfs_validate_crb(adapter, offset, size);
2950         if (ret != 0)
2951                 return ret;
2952
2953         if (ADDR_IN_RANGE(offset, QLCNIC_PCI_CAMQM, QLCNIC_PCI_CAMQM_END)) {
2954                 qlcnic_pci_camqm_read_2M(adapter, offset, &qmdata);
2955                 memcpy(buf, &qmdata, size);
2956         } else {
2957                 data = QLCRD32(adapter, offset);
2958                 memcpy(buf, &data, size);
2959         }
2960         return size;
2961 }
2962
2963 static ssize_t
2964 qlcnic_sysfs_write_crb(struct file *filp, struct kobject *kobj,
2965                 struct bin_attribute *attr,
2966                 char *buf, loff_t offset, size_t size)
2967 {
2968         struct device *dev = container_of(kobj, struct device, kobj);
2969         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2970         u32 data;
2971         u64 qmdata;
2972         int ret;
2973
2974         ret = qlcnic_sysfs_validate_crb(adapter, offset, size);
2975         if (ret != 0)
2976                 return ret;
2977
2978         if (ADDR_IN_RANGE(offset, QLCNIC_PCI_CAMQM, QLCNIC_PCI_CAMQM_END)) {
2979                 memcpy(&qmdata, buf, size);
2980                 qlcnic_pci_camqm_write_2M(adapter, offset, qmdata);
2981         } else {
2982                 memcpy(&data, buf, size);
2983                 QLCWR32(adapter, offset, data);
2984         }
2985         return size;
2986 }
2987
2988 static int
2989 qlcnic_sysfs_validate_mem(struct qlcnic_adapter *adapter,
2990                 loff_t offset, size_t size)
2991 {
2992         if (!(adapter->flags & QLCNIC_DIAG_ENABLED))
2993                 return -EIO;
2994
2995         if ((size != 8) || (offset & 0x7))
2996                 return  -EIO;
2997
2998         return 0;
2999 }
3000
3001 static ssize_t
3002 qlcnic_sysfs_read_mem(struct file *filp, struct kobject *kobj,
3003                 struct bin_attribute *attr,
3004                 char *buf, loff_t offset, size_t size)
3005 {
3006         struct device *dev = container_of(kobj, struct device, kobj);
3007         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
3008         u64 data;
3009         int ret;
3010
3011         ret = qlcnic_sysfs_validate_mem(adapter, offset, size);
3012         if (ret != 0)
3013                 return ret;
3014
3015         if (qlcnic_pci_mem_read_2M(adapter, offset, &data))
3016                 return -EIO;
3017
3018         memcpy(buf, &data, size);
3019
3020         return size;
3021 }
3022
3023 static ssize_t
3024 qlcnic_sysfs_write_mem(struct file *filp, struct kobject *kobj,
3025                 struct bin_attribute *attr,
3026                 char *buf, loff_t offset, size_t size)
3027 {
3028         struct device *dev = container_of(kobj, struct device, kobj);
3029         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
3030         u64 data;
3031         int ret;
3032
3033         ret = qlcnic_sysfs_validate_mem(adapter, offset, size);
3034         if (ret != 0)
3035                 return ret;
3036
3037         memcpy(&data, buf, size);
3038
3039         if (qlcnic_pci_mem_write_2M(adapter, offset, data))
3040                 return -EIO;
3041
3042         return size;
3043 }
3044
3045
3046 static struct bin_attribute bin_attr_crb = {
3047         .attr = {.name = "crb", .mode = (S_IRUGO | S_IWUSR)},
3048         .size = 0,
3049         .read = qlcnic_sysfs_read_crb,
3050         .write = qlcnic_sysfs_write_crb,
3051 };
3052
3053 static struct bin_attribute bin_attr_mem = {
3054         .attr = {.name = "mem", .mode = (S_IRUGO | S_IWUSR)},
3055         .size = 0,
3056         .read = qlcnic_sysfs_read_mem,
3057         .write = qlcnic_sysfs_write_mem,
3058 };
3059
3060 static int
3061 validate_pm_config(struct qlcnic_adapter *adapter,
3062                         struct qlcnic_pm_func_cfg *pm_cfg, int count)
3063 {
3064
3065         u8 src_pci_func, s_esw_id, d_esw_id;
3066         u8 dest_pci_func;
3067         int i;
3068
3069         for (i = 0; i < count; i++) {
3070                 src_pci_func = pm_cfg[i].pci_func;
3071                 dest_pci_func = pm_cfg[i].dest_npar;
3072                 if (src_pci_func >= QLCNIC_MAX_PCI_FUNC
3073                                 || dest_pci_func >= QLCNIC_MAX_PCI_FUNC)
3074                         return QL_STATUS_INVALID_PARAM;
3075
3076                 if (adapter->npars[src_pci_func].type != QLCNIC_TYPE_NIC)
3077                         return QL_STATUS_INVALID_PARAM;
3078
3079                 if (adapter->npars[dest_pci_func].type != QLCNIC_TYPE_NIC)
3080                         return QL_STATUS_INVALID_PARAM;
3081
3082                 if (!IS_VALID_MODE(pm_cfg[i].action))
3083                         return QL_STATUS_INVALID_PARAM;
3084
3085                 s_esw_id = adapter->npars[src_pci_func].phy_port;
3086                 d_esw_id = adapter->npars[dest_pci_func].phy_port;
3087
3088                 if (s_esw_id != d_esw_id)
3089                         return QL_STATUS_INVALID_PARAM;
3090
3091         }
3092         return 0;
3093
3094 }
3095
3096 static ssize_t
3097 qlcnic_sysfs_write_pm_config(struct file *filp, struct kobject *kobj,
3098         struct bin_attribute *attr, char *buf, loff_t offset, size_t size)
3099 {
3100         struct device *dev = container_of(kobj, struct device, kobj);
3101         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
3102         struct qlcnic_pm_func_cfg *pm_cfg;
3103         u32 id, action, pci_func;
3104         int count, rem, i, ret;
3105
3106         count   = size / sizeof(struct qlcnic_pm_func_cfg);
3107         rem     = size % sizeof(struct qlcnic_pm_func_cfg);
3108         if (rem)
3109                 return QL_STATUS_INVALID_PARAM;
3110
3111         pm_cfg = (struct qlcnic_pm_func_cfg *) buf;
3112
3113         ret = validate_pm_config(adapter, pm_cfg, count);
3114         if (ret)
3115                 return ret;
3116         for (i = 0; i < count; i++) {
3117                 pci_func = pm_cfg[i].pci_func;
3118                 action = pm_cfg[i].action;
3119                 id = adapter->npars[pci_func].phy_port;
3120                 ret = qlcnic_config_port_mirroring(adapter, id,
3121                                                 action, pci_func);
3122                 if (ret)
3123                         return ret;
3124         }
3125
3126         for (i = 0; i < count; i++) {
3127                 pci_func = pm_cfg[i].pci_func;
3128                 id = adapter->npars[pci_func].phy_port;
3129                 adapter->npars[pci_func].enable_pm = pm_cfg[i].action;
3130                 adapter->npars[pci_func].dest_npar = id;
3131         }
3132         return size;
3133 }
3134
3135 static ssize_t
3136 qlcnic_sysfs_read_pm_config(struct file *filp, struct kobject *kobj,
3137         struct bin_attribute *attr, char *buf, loff_t offset, size_t size)
3138 {
3139         struct device *dev = container_of(kobj, struct device, kobj);
3140         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
3141         struct qlcnic_pm_func_cfg pm_cfg[QLCNIC_MAX_PCI_FUNC];
3142         int i;
3143
3144         if (size != sizeof(pm_cfg))
3145                 return QL_STATUS_INVALID_PARAM;
3146
3147         for (i = 0; i < QLCNIC_MAX_PCI_FUNC; i++) {
3148                 if (adapter->npars[i].type != QLCNIC_TYPE_NIC)
3149                         continue;
3150                 pm_cfg[i].action = adapter->npars[i].enable_pm;
3151                 pm_cfg[i].dest_npar = 0;
3152                 pm_cfg[i].pci_func = i;
3153         }
3154         memcpy(buf, &pm_cfg, size);
3155
3156         return size;
3157 }
3158
3159 static int
3160 validate_esw_config(struct qlcnic_adapter *adapter,
3161                         struct qlcnic_esw_func_cfg *esw_cfg, int count)
3162 {
3163         u8 pci_func;
3164         int i;
3165
3166         for (i = 0; i < count; i++) {
3167                 pci_func = esw_cfg[i].pci_func;
3168                 if (pci_func >= QLCNIC_MAX_PCI_FUNC)
3169                         return QL_STATUS_INVALID_PARAM;
3170
3171                 if (adapter->npars[i].type != QLCNIC_TYPE_NIC)
3172                         return QL_STATUS_INVALID_PARAM;
3173
3174                 if (esw_cfg->host_vlan_tag == 1)
3175                         if (!IS_VALID_VLAN(esw_cfg[i].vlan_id))
3176                                 return QL_STATUS_INVALID_PARAM;
3177
3178                 if (!IS_VALID_MODE(esw_cfg[i].promisc_mode)
3179                                 || !IS_VALID_MODE(esw_cfg[i].host_vlan_tag)
3180                                 || !IS_VALID_MODE(esw_cfg[i].mac_learning)
3181                                 || !IS_VALID_MODE(esw_cfg[i].discard_tagged))
3182                         return QL_STATUS_INVALID_PARAM;
3183         }
3184
3185         return 0;
3186 }
3187
3188 static ssize_t
3189 qlcnic_sysfs_write_esw_config(struct file *file, struct kobject *kobj,
3190         struct bin_attribute *attr, char *buf, loff_t offset, size_t size)
3191 {
3192         struct device *dev = container_of(kobj, struct device, kobj);
3193         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
3194         struct qlcnic_esw_func_cfg *esw_cfg;
3195         int count, rem, i, ret;
3196         u8 id, pci_func;
3197
3198         count   = size / sizeof(struct qlcnic_esw_func_cfg);
3199         rem     = size % sizeof(struct qlcnic_esw_func_cfg);
3200         if (rem)
3201                 return QL_STATUS_INVALID_PARAM;
3202
3203         esw_cfg = (struct qlcnic_esw_func_cfg *) buf;
3204         ret = validate_esw_config(adapter, esw_cfg, count);
3205         if (ret)
3206                 return ret;
3207
3208         for (i = 0; i < count; i++) {
3209                 pci_func = esw_cfg[i].pci_func;
3210                 id = adapter->npars[pci_func].phy_port;
3211                 ret = qlcnic_config_switch_port(adapter, id,
3212                                                 esw_cfg[i].host_vlan_tag,
3213                                                 esw_cfg[i].discard_tagged,
3214                                                 esw_cfg[i].promisc_mode,
3215                                                 esw_cfg[i].mac_learning,
3216                                                 esw_cfg[i].pci_func,
3217                                                 esw_cfg[i].vlan_id);
3218                 if (ret)
3219                         return ret;
3220         }
3221
3222         for (i = 0; i < count; i++) {
3223                 pci_func = esw_cfg[i].pci_func;
3224                 adapter->npars[pci_func].promisc_mode = esw_cfg[i].promisc_mode;
3225                 adapter->npars[pci_func].mac_learning = esw_cfg[i].mac_learning;
3226                 adapter->npars[pci_func].vlan_id = esw_cfg[i].vlan_id;
3227                 adapter->npars[pci_func].discard_tagged =
3228                                                 esw_cfg[i].discard_tagged;
3229                 adapter->npars[pci_func].host_vlan_tag =
3230                                                 esw_cfg[i].host_vlan_tag;
3231         }
3232
3233         return size;
3234 }
3235
3236 static ssize_t
3237 qlcnic_sysfs_read_esw_config(struct file *file, struct kobject *kobj,
3238         struct bin_attribute *attr, char *buf, loff_t offset, size_t size)
3239 {
3240         struct device *dev = container_of(kobj, struct device, kobj);
3241         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
3242         struct qlcnic_esw_func_cfg esw_cfg[QLCNIC_MAX_PCI_FUNC];
3243         int i;
3244
3245         if (size != sizeof(esw_cfg))
3246                 return QL_STATUS_INVALID_PARAM;
3247
3248         for (i = 0; i < QLCNIC_MAX_PCI_FUNC; i++) {
3249                 if (adapter->npars[i].type != QLCNIC_TYPE_NIC)
3250                         continue;
3251
3252                 esw_cfg[i].host_vlan_tag = adapter->npars[i].host_vlan_tag;
3253                 esw_cfg[i].promisc_mode = adapter->npars[i].promisc_mode;
3254                 esw_cfg[i].discard_tagged = adapter->npars[i].discard_tagged;
3255                 esw_cfg[i].vlan_id = adapter->npars[i].vlan_id;
3256                 esw_cfg[i].mac_learning = adapter->npars[i].mac_learning;
3257         }
3258         memcpy(buf, &esw_cfg, size);
3259
3260         return size;
3261 }
3262
3263 static int
3264 validate_npar_config(struct qlcnic_adapter *adapter,
3265                                 struct qlcnic_npar_func_cfg *np_cfg, int count)
3266 {
3267         u8 pci_func, i;
3268
3269         for (i = 0; i < count; i++) {
3270                 pci_func = np_cfg[i].pci_func;
3271                 if (pci_func >= QLCNIC_MAX_PCI_FUNC)
3272                         return QL_STATUS_INVALID_PARAM;
3273
3274                 if (adapter->npars[pci_func].type != QLCNIC_TYPE_NIC)
3275                         return QL_STATUS_INVALID_PARAM;
3276
3277                 if (!IS_VALID_BW(np_cfg[i].min_bw)
3278                                 || !IS_VALID_BW(np_cfg[i].max_bw)
3279                                 || !IS_VALID_RX_QUEUES(np_cfg[i].max_rx_queues)
3280                                 || !IS_VALID_TX_QUEUES(np_cfg[i].max_tx_queues))
3281                         return QL_STATUS_INVALID_PARAM;
3282         }
3283         return 0;
3284 }
3285
3286 static ssize_t
3287 qlcnic_sysfs_write_npar_config(struct file *file, struct kobject *kobj,
3288         struct bin_attribute *attr, char *buf, loff_t offset, size_t size)
3289 {
3290         struct device *dev = container_of(kobj, struct device, kobj);
3291         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
3292         struct qlcnic_info nic_info;
3293         struct qlcnic_npar_func_cfg *np_cfg;
3294         int i, count, rem, ret;
3295         u8 pci_func;
3296
3297         count   = size / sizeof(struct qlcnic_npar_func_cfg);
3298         rem     = size % sizeof(struct qlcnic_npar_func_cfg);
3299         if (rem)
3300                 return QL_STATUS_INVALID_PARAM;
3301
3302         np_cfg = (struct qlcnic_npar_func_cfg *) buf;
3303         ret = validate_npar_config(adapter, np_cfg, count);
3304         if (ret)
3305                 return ret;
3306
3307         for (i = 0; i < count ; i++) {
3308                 pci_func = np_cfg[i].pci_func;
3309                 ret = qlcnic_get_nic_info(adapter, &nic_info, pci_func);
3310                 if (ret)
3311                         return ret;
3312                 nic_info.pci_func = pci_func;
3313                 nic_info.min_tx_bw = np_cfg[i].min_bw;
3314                 nic_info.max_tx_bw = np_cfg[i].max_bw;
3315                 ret = qlcnic_set_nic_info(adapter, &nic_info);
3316                 if (ret)
3317                         return ret;
3318                 adapter->npars[i].min_bw = nic_info.min_tx_bw;
3319                 adapter->npars[i].max_bw = nic_info.max_tx_bw;
3320         }
3321
3322         return size;
3323
3324 }
3325 static ssize_t
3326 qlcnic_sysfs_read_npar_config(struct file *file, struct kobject *kobj,
3327         struct bin_attribute *attr, char *buf, loff_t offset, size_t size)
3328 {
3329         struct device *dev = container_of(kobj, struct device, kobj);
3330         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
3331         struct qlcnic_info nic_info;
3332         struct qlcnic_npar_func_cfg np_cfg[QLCNIC_MAX_PCI_FUNC];
3333         int i, ret;
3334
3335         if (size != sizeof(np_cfg))
3336                 return QL_STATUS_INVALID_PARAM;
3337
3338         for (i = 0; i < QLCNIC_MAX_PCI_FUNC ; i++) {
3339                 if (adapter->npars[i].type != QLCNIC_TYPE_NIC)
3340                         continue;
3341                 ret = qlcnic_get_nic_info(adapter, &nic_info, i);
3342                 if (ret)
3343                         return ret;
3344
3345                 np_cfg[i].pci_func = i;
3346                 np_cfg[i].op_mode = nic_info.op_mode;
3347                 np_cfg[i].port_num = nic_info.phys_port;
3348                 np_cfg[i].fw_capab = nic_info.capabilities;
3349                 np_cfg[i].min_bw = nic_info.min_tx_bw ;
3350                 np_cfg[i].max_bw = nic_info.max_tx_bw;
3351                 np_cfg[i].max_tx_queues = nic_info.max_tx_ques;
3352                 np_cfg[i].max_rx_queues = nic_info.max_rx_ques;
3353         }
3354         memcpy(buf, &np_cfg, size);
3355         return size;
3356 }
3357
3358 static ssize_t
3359 qlcnic_sysfs_read_pci_config(struct file *file, struct kobject *kobj,
3360         struct bin_attribute *attr, char *buf, loff_t offset, size_t size)
3361 {
3362         struct device *dev = container_of(kobj, struct device, kobj);
3363         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
3364         struct qlcnic_pci_func_cfg pci_cfg[QLCNIC_MAX_PCI_FUNC];
3365         struct qlcnic_pci_info  pci_info[QLCNIC_MAX_PCI_FUNC];
3366         int i, ret;
3367
3368         if (size != sizeof(pci_cfg))
3369                 return QL_STATUS_INVALID_PARAM;
3370
3371         ret = qlcnic_get_pci_info(adapter, pci_info);
3372         if (ret)
3373                 return ret;
3374
3375         for (i = 0; i < QLCNIC_MAX_PCI_FUNC ; i++) {
3376                 pci_cfg[i].pci_func = pci_info[i].id;
3377                 pci_cfg[i].func_type = pci_info[i].type;
3378                 pci_cfg[i].port_num = pci_info[i].default_port;
3379                 pci_cfg[i].min_bw = pci_info[i].tx_min_bw;
3380                 pci_cfg[i].max_bw = pci_info[i].tx_max_bw;
3381                 memcpy(&pci_cfg[i].def_mac_addr, &pci_info[i].mac, ETH_ALEN);
3382         }
3383         memcpy(buf, &pci_cfg, size);
3384         return size;
3385
3386 }
3387 static struct bin_attribute bin_attr_npar_config = {
3388         .attr = {.name = "npar_config", .mode = (S_IRUGO | S_IWUSR)},
3389         .size = 0,
3390         .read = qlcnic_sysfs_read_npar_config,
3391         .write = qlcnic_sysfs_write_npar_config,
3392 };
3393
3394 static struct bin_attribute bin_attr_pci_config = {
3395         .attr = {.name = "pci_config", .mode = (S_IRUGO | S_IWUSR)},
3396         .size = 0,
3397         .read = qlcnic_sysfs_read_pci_config,
3398         .write = NULL,
3399 };
3400
3401 static struct bin_attribute bin_attr_esw_config = {
3402         .attr = {.name = "esw_config", .mode = (S_IRUGO | S_IWUSR)},
3403         .size = 0,
3404         .read = qlcnic_sysfs_read_esw_config,
3405         .write = qlcnic_sysfs_write_esw_config,
3406 };
3407
3408 static struct bin_attribute bin_attr_pm_config = {
3409         .attr = {.name = "pm_config", .mode = (S_IRUGO | S_IWUSR)},
3410         .size = 0,
3411         .read = qlcnic_sysfs_read_pm_config,
3412         .write = qlcnic_sysfs_write_pm_config,
3413 };
3414
3415 static void
3416 qlcnic_create_sysfs_entries(struct qlcnic_adapter *adapter)
3417 {
3418         struct device *dev = &adapter->pdev->dev;
3419
3420         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
3421                 if (device_create_file(dev, &dev_attr_bridged_mode))
3422                         dev_warn(dev,
3423                                 "failed to create bridged_mode sysfs entry\n");
3424 }
3425
3426 static void
3427 qlcnic_remove_sysfs_entries(struct qlcnic_adapter *adapter)
3428 {
3429         struct device *dev = &adapter->pdev->dev;
3430
3431         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
3432                 device_remove_file(dev, &dev_attr_bridged_mode);
3433 }
3434
3435 static void
3436 qlcnic_create_diag_entries(struct qlcnic_adapter *adapter)
3437 {
3438         struct device *dev = &adapter->pdev->dev;
3439
3440         if (adapter->op_mode == QLCNIC_NON_PRIV_FUNC)
3441                 return;
3442         if (device_create_file(dev, &dev_attr_diag_mode))
3443                 dev_info(dev, "failed to create diag_mode sysfs entry\n");
3444         if (device_create_bin_file(dev, &bin_attr_crb))
3445                 dev_info(dev, "failed to create crb sysfs entry\n");
3446         if (device_create_bin_file(dev, &bin_attr_mem))
3447                 dev_info(dev, "failed to create mem sysfs entry\n");
3448         if (!(adapter->flags & QLCNIC_ESWITCH_ENABLED) ||
3449                         adapter->op_mode != QLCNIC_MGMT_FUNC)
3450                 return;
3451         if (device_create_bin_file(dev, &bin_attr_pci_config))
3452                 dev_info(dev, "failed to create pci config sysfs entry");
3453         if (device_create_bin_file(dev, &bin_attr_npar_config))
3454                 dev_info(dev, "failed to create npar config sysfs entry");
3455         if (device_create_bin_file(dev, &bin_attr_esw_config))
3456                 dev_info(dev, "failed to create esw config sysfs entry");
3457         if (device_create_bin_file(dev, &bin_attr_pm_config))
3458                 dev_info(dev, "failed to create pm config sysfs entry");
3459
3460 }
3461
3462 static void
3463 qlcnic_remove_diag_entries(struct qlcnic_adapter *adapter)
3464 {
3465         struct device *dev = &adapter->pdev->dev;
3466
3467         if (adapter->op_mode == QLCNIC_NON_PRIV_FUNC)
3468                 return;
3469         device_remove_file(dev, &dev_attr_diag_mode);
3470         device_remove_bin_file(dev, &bin_attr_crb);
3471         device_remove_bin_file(dev, &bin_attr_mem);
3472         if (!(adapter->flags & QLCNIC_ESWITCH_ENABLED) ||
3473                         adapter->op_mode != QLCNIC_MGMT_FUNC)
3474                 return;
3475         device_remove_bin_file(dev, &bin_attr_pci_config);
3476         device_remove_bin_file(dev, &bin_attr_npar_config);
3477         device_remove_bin_file(dev, &bin_attr_esw_config);
3478         device_remove_bin_file(dev, &bin_attr_pm_config);
3479 }
3480
3481 #ifdef CONFIG_INET
3482
3483 #define is_qlcnic_netdev(dev) (dev->netdev_ops == &qlcnic_netdev_ops)
3484
3485 static void
3486 qlcnic_config_indev_addr(struct net_device *dev, unsigned long event)
3487 {
3488         struct in_device *indev;
3489         struct qlcnic_adapter *adapter = netdev_priv(dev);
3490
3491         indev = in_dev_get(dev);
3492         if (!indev)
3493                 return;
3494
3495         for_ifa(indev) {
3496                 switch (event) {
3497                 case NETDEV_UP:
3498                         qlcnic_config_ipaddr(adapter,
3499                                         ifa->ifa_address, QLCNIC_IP_UP);
3500                         break;
3501                 case NETDEV_DOWN:
3502                         qlcnic_config_ipaddr(adapter,
3503                                         ifa->ifa_address, QLCNIC_IP_DOWN);
3504                         break;
3505                 default:
3506                         break;
3507                 }
3508         } endfor_ifa(indev);
3509
3510         in_dev_put(indev);
3511 }
3512
3513 static int qlcnic_netdev_event(struct notifier_block *this,
3514                                  unsigned long event, void *ptr)
3515 {
3516         struct qlcnic_adapter *adapter;
3517         struct net_device *dev = (struct net_device *)ptr;
3518
3519 recheck:
3520         if (dev == NULL)
3521                 goto done;
3522
3523         if (dev->priv_flags & IFF_802_1Q_VLAN) {
3524                 dev = vlan_dev_real_dev(dev);
3525                 goto recheck;
3526         }
3527
3528         if (!is_qlcnic_netdev(dev))
3529                 goto done;
3530
3531         adapter = netdev_priv(dev);
3532
3533         if (!adapter)
3534                 goto done;
3535
3536         if (!test_bit(__QLCNIC_DEV_UP, &adapter->state))
3537                 goto done;
3538
3539         qlcnic_config_indev_addr(dev, event);
3540 done:
3541         return NOTIFY_DONE;
3542 }
3543
3544 static int
3545 qlcnic_inetaddr_event(struct notifier_block *this,
3546                 unsigned long event, void *ptr)
3547 {
3548         struct qlcnic_adapter *adapter;
3549         struct net_device *dev;
3550
3551         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3552
3553         dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
3554
3555 recheck:
3556         if (dev == NULL || !netif_running(dev))
3557                 goto done;
3558
3559         if (dev->priv_flags & IFF_802_1Q_VLAN) {
3560                 dev = vlan_dev_real_dev(dev);
3561                 goto recheck;
3562         }
3563
3564         if (!is_qlcnic_netdev(dev))
3565                 goto done;
3566
3567         adapter = netdev_priv(dev);
3568
3569         if (!adapter)
3570                 goto done;
3571
3572         if (!test_bit(__QLCNIC_DEV_UP, &adapter->state))
3573                 goto done;
3574
3575         switch (event) {
3576         case NETDEV_UP:
3577                 qlcnic_config_ipaddr(adapter, ifa->ifa_address, QLCNIC_IP_UP);
3578                 break;
3579         case NETDEV_DOWN:
3580                 qlcnic_config_ipaddr(adapter, ifa->ifa_address, QLCNIC_IP_DOWN);
3581                 break;
3582         default:
3583                 break;
3584         }
3585
3586 done:
3587         return NOTIFY_DONE;
3588 }
3589
3590 static struct notifier_block    qlcnic_netdev_cb = {
3591         .notifier_call = qlcnic_netdev_event,
3592 };
3593
3594 static struct notifier_block qlcnic_inetaddr_cb = {
3595         .notifier_call = qlcnic_inetaddr_event,
3596 };
3597 #else
3598 static void
3599 qlcnic_config_indev_addr(struct net_device *dev, unsigned long event)
3600 { }
3601 #endif
3602 static struct pci_error_handlers qlcnic_err_handler = {
3603         .error_detected = qlcnic_io_error_detected,
3604         .slot_reset = qlcnic_io_slot_reset,
3605         .resume = qlcnic_io_resume,
3606 };
3607
3608 static struct pci_driver qlcnic_driver = {
3609         .name = qlcnic_driver_name,
3610         .id_table = qlcnic_pci_tbl,
3611         .probe = qlcnic_probe,
3612         .remove = __devexit_p(qlcnic_remove),
3613 #ifdef CONFIG_PM
3614         .suspend = qlcnic_suspend,
3615         .resume = qlcnic_resume,
3616 #endif
3617         .shutdown = qlcnic_shutdown,
3618         .err_handler = &qlcnic_err_handler
3619
3620 };
3621
3622 static int __init qlcnic_init_module(void)
3623 {
3624         int ret;
3625
3626         printk(KERN_INFO "%s\n", qlcnic_driver_string);
3627
3628 #ifdef CONFIG_INET
3629         register_netdevice_notifier(&qlcnic_netdev_cb);
3630         register_inetaddr_notifier(&qlcnic_inetaddr_cb);
3631 #endif
3632
3633         ret = pci_register_driver(&qlcnic_driver);
3634         if (ret) {
3635 #ifdef CONFIG_INET
3636                 unregister_inetaddr_notifier(&qlcnic_inetaddr_cb);
3637                 unregister_netdevice_notifier(&qlcnic_netdev_cb);
3638 #endif
3639         }
3640
3641         return ret;
3642 }
3643
3644 module_init(qlcnic_init_module);
3645
3646 static void __exit qlcnic_exit_module(void)
3647 {
3648
3649         pci_unregister_driver(&qlcnic_driver);
3650
3651 #ifdef CONFIG_INET
3652         unregister_inetaddr_notifier(&qlcnic_inetaddr_cb);
3653         unregister_netdevice_notifier(&qlcnic_netdev_cb);
3654 #endif
3655 }
3656
3657 module_exit(qlcnic_exit_module);