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         if (!adapter->npars)
 481                 adapter->npars = kzalloc(sizeof(struct qlcnic_npar_info) *
 482                                 QLCNIC_MAX_PCI_FUNC, GFP_KERNEL);
 483         if (!adapter->npars)
 484                 return -ENOMEM;
 485
 486         if (!adapter->eswitch)
 487                 adapter->eswitch = kzalloc(sizeof(struct qlcnic_eswitch) *
 488                                 QLCNIC_NIU_MAX_XG_PORTS, GFP_KERNEL);
 489         if (!adapter->eswitch) {
 490                 err = -ENOMEM;
 491                 goto err_eswitch;
 492         }
 493
 494         ret = qlcnic_get_pci_info(adapter, pci_info);
 495         if (!ret) {
 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 ret;
 512         }
 513
 514         kfree(adapter->eswitch);
 515         adapter->eswitch = NULL;
 516 err_eswitch:
 517         kfree(adapter->npars);
 518
 519         return ret;
 520 }
 521
 522 static int
 523 qlcnic_set_function_modes(struct qlcnic_adapter *adapter)
 524 {
 525         u8 id;
 526         u32 ref_count;
 527         int i, ret = 1;
 528         u32 data = QLCNIC_MGMT_FUNC;
 529         void __iomem *priv_op = adapter->ahw.pci_base0 + QLCNIC_DRV_OP_MODE;
 530
 531         /* If other drivers are not in use set their privilege level */
 532         ref_count = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
 533         ret = qlcnic_api_lock(adapter);
 534         if (ret)
 535                 goto err_lock;
 536         if (QLC_DEV_CLR_REF_CNT(ref_count, adapter->ahw.pci_func))
 537                 goto err_npar;
 538
 539         if (qlcnic_config_npars) {
 540                 for (i = 0; i < QLCNIC_MAX_PCI_FUNC; i++) {
 541                         id = i;
 542                         if (adapter->npars[i].type != QLCNIC_TYPE_NIC ||
 543                                 id == adapter->ahw.pci_func)
 544                                 continue;
 545                         data |= (qlcnic_config_npars &
 546                                         QLC_DEV_SET_DRV(0xf, id));
 547                 }
 548         } else {
 549                 data = readl(priv_op);
 550                 data = (data & ~QLC_DEV_SET_DRV(0xf, adapter->ahw.pci_func)) |
 551                         (QLC_DEV_SET_DRV(QLCNIC_MGMT_FUNC,
 552                         adapter->ahw.pci_func));
 553         }
 554         writel(data, priv_op);
 555 err_npar:
 556         qlcnic_api_unlock(adapter);
 557 err_lock:
 558         return ret;
 559 }
 560
 561 static u32
 562 qlcnic_get_driver_mode(struct qlcnic_adapter *adapter)
 563 {
 564         void __iomem *msix_base_addr;
 565         void __iomem *priv_op;
 566         struct qlcnic_info nic_info;
 567         u32 func;
 568         u32 msix_base;
 569         u32 op_mode, priv_level;
 570
 571         /* Determine FW API version */
 572         adapter->fw_hal_version = readl(adapter->ahw.pci_base0 + QLCNIC_FW_API);
 573
 574         /* Find PCI function number */
 575         pci_read_config_dword(adapter->pdev, QLCNIC_MSIX_TABLE_OFFSET, &func);
 576         msix_base_addr = adapter->ahw.pci_base0 + QLCNIC_MSIX_BASE;
 577         msix_base = readl(msix_base_addr);
 578         func = (func - msix_base)/QLCNIC_MSIX_TBL_PGSIZE;
 579         adapter->ahw.pci_func = func;
 580
 581         if (!qlcnic_get_nic_info(adapter, &nic_info, adapter->ahw.pci_func)) {
 582                 adapter->capabilities = nic_info.capabilities;
 583
 584                 if (adapter->capabilities & BIT_6)
 585                         adapter->flags |= QLCNIC_ESWITCH_ENABLED;
 586                 else
 587                         adapter->flags &= ~QLCNIC_ESWITCH_ENABLED;
 588         }
 589
 590         if (!(adapter->flags & QLCNIC_ESWITCH_ENABLED)) {
 591                 adapter->nic_ops = &qlcnic_ops;
 592                 return adapter->fw_hal_version;
 593         }
 594
 595         /* Determine function privilege level */
 596         priv_op = adapter->ahw.pci_base0 + QLCNIC_DRV_OP_MODE;
 597         op_mode = readl(priv_op);
 598         if (op_mode == QLC_DEV_DRV_DEFAULT)
 599                 priv_level = QLCNIC_MGMT_FUNC;
 600         else
 601                 priv_level = QLC_DEV_GET_DRV(op_mode, adapter->ahw.pci_func);
 602
 603         switch (priv_level) {
 604         case QLCNIC_MGMT_FUNC:
 605                 adapter->op_mode = QLCNIC_MGMT_FUNC;
 606                 adapter->nic_ops = &qlcnic_ops;
 607                 qlcnic_init_pci_info(adapter);
 608                 /* Set privilege level for other functions */
 609                 qlcnic_set_function_modes(adapter);
 610                 dev_info(&adapter->pdev->dev,
 611                         "HAL Version: %d, Management function\n",
 612                         adapter->fw_hal_version);
 613                 break;
 614         case QLCNIC_PRIV_FUNC:
 615                 adapter->op_mode = QLCNIC_PRIV_FUNC;
 616                 dev_info(&adapter->pdev->dev,
 617                         "HAL Version: %d, Privileged function\n",
 618                         adapter->fw_hal_version);
 619                 adapter->nic_ops = &qlcnic_ops;
 620                 break;
 621         case QLCNIC_NON_PRIV_FUNC:
 622                 adapter->op_mode = QLCNIC_NON_PRIV_FUNC;
 623                 dev_info(&adapter->pdev->dev,
 624                         "HAL Version: %d Non Privileged function\n",
 625                         adapter->fw_hal_version);
 626                 adapter->nic_ops = &qlcnic_vf_ops;
 627                 break;
 628         default:
 629                 dev_info(&adapter->pdev->dev, "Unknown function mode: %d\n",
 630                         priv_level);
 631                 return 0;
 632         }
 633         return adapter->fw_hal_version;
 634 }
 635
 636 static int
 637 qlcnic_setup_pci_map(struct qlcnic_adapter *adapter)
 638 {
 639         void __iomem *mem_ptr0 = NULL;
 640         resource_size_t mem_base;
 641         unsigned long mem_len, pci_len0 = 0;
 642
 643         struct pci_dev *pdev = adapter->pdev;
 644
 645         /* remap phys address */
 646         mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
 647         mem_len = pci_resource_len(pdev, 0);
 648
 649         if (mem_len == QLCNIC_PCI_2MB_SIZE) {
 650
 651                 mem_ptr0 = pci_ioremap_bar(pdev, 0);
 652                 if (mem_ptr0 == NULL) {
 653                         dev_err(&pdev->dev, "failed to map PCI bar 0\n");
 654                         return -EIO;
 655                 }
 656                 pci_len0 = mem_len;
 657         } else {
 658                 return -EIO;
 659         }
 660
 661         dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
 662
 663         adapter->ahw.pci_base0 = mem_ptr0;
 664         adapter->ahw.pci_len0 = pci_len0;
 665
 666         if (!qlcnic_get_driver_mode(adapter)) {
 667                 iounmap(adapter->ahw.pci_base0);
 668                 return -EIO;
 669         }
 670
 671         adapter->ahw.ocm_win_crb = qlcnic_get_ioaddr(adapter,
 672                 QLCNIC_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(adapter->ahw.pci_func)));
 673
 674         return 0;
 675 }
 676
 677 static void get_brd_name(struct qlcnic_adapter *adapter, char *name)
 678 {
 679         struct pci_dev *pdev = adapter->pdev;
 680         int i, found = 0;
 681
 682         for (i = 0; i < NUM_SUPPORTED_BOARDS; ++i) {
 683                 if (qlcnic_boards[i].vendor == pdev->vendor &&
 684                         qlcnic_boards[i].device == pdev->device &&
 685                         qlcnic_boards[i].sub_vendor == pdev->subsystem_vendor &&
 686                         qlcnic_boards[i].sub_device == pdev->subsystem_device) {
 687                                 sprintf(name, "%pM: %s" ,
 688                                         adapter->mac_addr,
 689                                         qlcnic_boards[i].short_name);
 690                                 found = 1;
 691                                 break;
 692                 }
 693
 694         }
 695
 696         if (!found)
 697                 sprintf(name, "%pM Gigabit Ethernet", adapter->mac_addr);
 698 }
 699
 700 static void
 701 qlcnic_check_options(struct qlcnic_adapter *adapter)
 702 {
 703         u32 fw_major, fw_minor, fw_build;
 704         char brd_name[QLCNIC_MAX_BOARD_NAME_LEN];
 705         char serial_num[32];
 706         int i, offset, val;
 707         int *ptr32;
 708         struct pci_dev *pdev = adapter->pdev;
 709         struct qlcnic_info nic_info;
 710         adapter->driver_mismatch = 0;
 711
 712         ptr32 = (int *)&serial_num;
 713         offset = QLCNIC_FW_SERIAL_NUM_OFFSET;
 714         for (i = 0; i < 8; i++) {
 715                 if (qlcnic_rom_fast_read(adapter, offset, &val) == -1) {
 716                         dev_err(&pdev->dev, "error reading board info\n");
 717                         adapter->driver_mismatch = 1;
 718                         return;
 719                 }
 720                 ptr32[i] = cpu_to_le32(val);
 721                 offset += sizeof(u32);
 722         }
 723
 724         fw_major = QLCRD32(adapter, QLCNIC_FW_VERSION_MAJOR);
 725         fw_minor = QLCRD32(adapter, QLCNIC_FW_VERSION_MINOR);
 726         fw_build = QLCRD32(adapter, QLCNIC_FW_VERSION_SUB);
 727
 728         adapter->fw_version = QLCNIC_VERSION_CODE(fw_major, fw_minor, fw_build);
 729
 730         if (adapter->portnum == 0) {
 731                 get_brd_name(adapter, brd_name);
 732
 733                 pr_info("%s: %s Board Chip rev 0x%x\n",
 734                                 module_name(THIS_MODULE),
 735                                 brd_name, adapter->ahw.revision_id);
 736         }
 737
 738         dev_info(&pdev->dev, "firmware v%d.%d.%d\n",
 739                         fw_major, fw_minor, fw_build);
 740
 741         adapter->flags &= ~QLCNIC_LRO_ENABLED;
 742
 743         if (adapter->ahw.port_type == QLCNIC_XGBE) {
 744                 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
 745                 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
 746         } else if (adapter->ahw.port_type == QLCNIC_GBE) {
 747                 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
 748                 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
 749         }
 750
 751         if (!qlcnic_get_nic_info(adapter, &nic_info, adapter->ahw.pci_func)) {
 752                 adapter->physical_port = nic_info.phys_port;
 753                 adapter->switch_mode = nic_info.switch_mode;
 754                 adapter->max_tx_ques = nic_info.max_tx_ques;
 755                 adapter->max_rx_ques = nic_info.max_rx_ques;
 756                 adapter->capabilities = nic_info.capabilities;
 757                 adapter->max_mac_filters = nic_info.max_mac_filters;
 758                 adapter->max_mtu = nic_info.max_mtu;
 759         }
 760
 761         adapter->msix_supported = !!use_msi_x;
 762         adapter->rss_supported = !!use_msi_x;
 763
 764         adapter->num_txd = MAX_CMD_DESCRIPTORS;
 765
 766         adapter->max_rds_rings = 2;
 767 }
 768
 769 static int
 770 qlcnic_reset_npar_config(struct qlcnic_adapter *adapter)
 771 {
 772         int i, err = 0;
 773         struct qlcnic_npar_info *npar;
 774         struct qlcnic_info nic_info;
 775
 776         if (!(adapter->flags & QLCNIC_ESWITCH_ENABLED) ||
 777             !adapter->need_fw_reset)
 778                 return 0;
 779
 780         if (adapter->op_mode == QLCNIC_MGMT_FUNC) {
 781                 /* Set the NPAR config data after FW reset */
 782                 for (i = 0; i < QLCNIC_MAX_PCI_FUNC; i++) {
 783                         npar = &adapter->npars[i];
 784                         if (npar->type != QLCNIC_TYPE_NIC)
 785                                 continue;
 786                         err = qlcnic_get_nic_info(adapter, &nic_info, i);
 787                         if (err)
 788                                 goto err_out;
 789                         nic_info.min_tx_bw = npar->min_bw;
 790                         nic_info.max_tx_bw = npar->max_bw;
 791                         err = qlcnic_set_nic_info(adapter, &nic_info);
 792                         if (err)
 793                                 goto err_out;
 794
 795                         if (npar->enable_pm) {
 796                                 err = qlcnic_config_port_mirroring(adapter,
 797                                                 npar->dest_npar, 1, i);
 798                                 if (err)
 799                                         goto err_out;
 800
 801                         }
 802                         npar->mac_learning = DEFAULT_MAC_LEARN;
 803                         npar->host_vlan_tag = 0;
 804                         npar->promisc_mode = 0;
 805                         npar->discard_tagged = 0;
 806                         npar->vlan_id = 0;
 807                 }
 808         }
 809 err_out:
 810         return err;
 811 }
 812
 813 static int
 814 qlcnic_start_firmware(struct qlcnic_adapter *adapter)
 815 {
 816         int val, err, first_boot;
 817
 818         err = qlcnic_can_start_firmware(adapter);
 819         if (err < 0)
 820                 return err;
 821         else if (!err)
 822                 goto wait_init;
 823
 824         first_boot = QLCRD32(adapter, QLCNIC_CAM_RAM(0x1fc));
 825         if (first_boot == 0x55555555)
 826                 /* This is the first boot after power up */
 827                 QLCWR32(adapter, QLCNIC_CAM_RAM(0x1fc), QLCNIC_BDINFO_MAGIC);
 828
 829         if (load_fw_file)
 830                 qlcnic_request_firmware(adapter);
 831         else {
 832                 if (qlcnic_check_flash_fw_ver(adapter))
 833                         goto err_out;
 834
 835                 adapter->fw_type = QLCNIC_FLASH_ROMIMAGE;
 836         }
 837
 838         err = qlcnic_need_fw_reset(adapter);
 839         if (err < 0)
 840                 goto err_out;
 841         if (err == 0)
 842                 goto wait_init;
 843
 844         if (first_boot != 0x55555555) {
 845                 QLCWR32(adapter, CRB_CMDPEG_STATE, 0);
 846                 QLCWR32(adapter, CRB_RCVPEG_STATE, 0);
 847                 qlcnic_pinit_from_rom(adapter);
 848                 msleep(1);
 849         }
 850
 851         QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS1, 0);
 852         QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS2, 0);
 853
 854         qlcnic_set_port_mode(adapter);
 855
 856         err = qlcnic_load_firmware(adapter);
 857         if (err)
 858                 goto err_out;
 859
 860         qlcnic_release_firmware(adapter);
 861
 862         val = (_QLCNIC_LINUX_MAJOR << 16)
 863                 | ((_QLCNIC_LINUX_MINOR << 8))
 864                 | (_QLCNIC_LINUX_SUBVERSION);
 865         QLCWR32(adapter, CRB_DRIVER_VERSION, val);
 866
 867 wait_init:
 868         /* Handshake with the card before we register the devices. */
 869         err = qlcnic_init_firmware(adapter);
 870         if (err)
 871                 goto err_out;
 872
 873         QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_READY);
 874         qlcnic_idc_debug_info(adapter, 1);
 875
 876         qlcnic_check_options(adapter);
 877         if (qlcnic_reset_npar_config(adapter))
 878                 goto err_out;
 879         qlcnic_dev_set_npar_ready(adapter);
 880
 881         adapter->need_fw_reset = 0;
 882
 883         qlcnic_release_firmware(adapter);
 884         return 0;
 885
 886 err_out:
 887         QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_FAILED);
 888         dev_err(&adapter->pdev->dev, "Device state set to failed\n");
 889         qlcnic_release_firmware(adapter);
 890         return err;
 891 }
 892
 893 static int
 894 qlcnic_request_irq(struct qlcnic_adapter *adapter)
 895 {
 896         irq_handler_t handler;
 897         struct qlcnic_host_sds_ring *sds_ring;
 898         int err, ring;
 899
 900         unsigned long flags = 0;
 901         struct net_device *netdev = adapter->netdev;
 902         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 903
 904         if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
 905                 handler = qlcnic_tmp_intr;
 906                 if (!QLCNIC_IS_MSI_FAMILY(adapter))
 907                         flags |= IRQF_SHARED;
 908
 909         } else {
 910                 if (adapter->flags & QLCNIC_MSIX_ENABLED)
 911                         handler = qlcnic_msix_intr;
 912                 else if (adapter->flags & QLCNIC_MSI_ENABLED)
 913                         handler = qlcnic_msi_intr;
 914                 else {
 915                         flags |= IRQF_SHARED;
 916                         handler = qlcnic_intr;
 917                 }
 918         }
 919         adapter->irq = netdev->irq;
 920
 921         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 922                 sds_ring = &recv_ctx->sds_rings[ring];
 923                 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
 924                 err = request_irq(sds_ring->irq, handler,
 925                                   flags, sds_ring->name, sds_ring);
 926                 if (err)
 927                         return err;
 928         }
 929
 930         return 0;
 931 }
 932
 933 static void
 934 qlcnic_free_irq(struct qlcnic_adapter *adapter)
 935 {
 936         int ring;
 937         struct qlcnic_host_sds_ring *sds_ring;
 938
 939         struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
 940
 941         for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 942                 sds_ring = &recv_ctx->sds_rings[ring];
 943                 free_irq(sds_ring->irq, sds_ring);
 944         }
 945 }
 946
 947 static void
 948 qlcnic_init_coalesce_defaults(struct qlcnic_adapter *adapter)
 949 {
 950         adapter->coal.flags = QLCNIC_INTR_DEFAULT;
 951         adapter->coal.normal.data.rx_time_us =
 952                 QLCNIC_DEFAULT_INTR_COALESCE_RX_TIME_US;
 953         adapter->coal.normal.data.rx_packets =
 954                 QLCNIC_DEFAULT_INTR_COALESCE_RX_PACKETS;
 955         adapter->coal.normal.data.tx_time_us =
 956                 QLCNIC_DEFAULT_INTR_COALESCE_TX_TIME_US;
 957         adapter->coal.normal.data.tx_packets =
 958                 QLCNIC_DEFAULT_INTR_COALESCE_TX_PACKETS;
 959 }
 960
 961 static int
 962 __qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
 963 {
 964         int ring;
 965         struct qlcnic_host_rds_ring *rds_ring;
 966
 967         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
 968                 return -EIO;
 969
 970         if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
 971                 return 0;
 972
 973         if (qlcnic_fw_create_ctx(adapter))
 974                 return -EIO;
 975
 976         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
 977                 rds_ring = &adapter->recv_ctx.rds_rings[ring];
 978                 qlcnic_post_rx_buffers(adapter, ring, rds_ring);
 979         }
 980
 981         qlcnic_set_multi(netdev);
 982         qlcnic_fw_cmd_set_mtu(adapter, netdev->mtu);
 983
 984         adapter->ahw.linkup = 0;
 985
 986         if (adapter->max_sds_rings > 1)
 987                 qlcnic_config_rss(adapter, 1);
 988
 989         qlcnic_config_intr_coalesce(adapter);
 990
 991         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
 992                 qlcnic_config_hw_lro(adapter, QLCNIC_LRO_ENABLED);
 993
 994         qlcnic_napi_enable(adapter);
 995
 996         qlcnic_linkevent_request(adapter, 1);
 997
 998         adapter->reset_context = 0;
 999         set_bit(__QLCNIC_DEV_UP, &adapter->state);
1000         return 0;
1001 }
1002
1003 /* Usage: During resume and firmware recovery module.*/
1004
1005 static int
1006 qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
1007 {
1008         int err = 0;
1009
1010         rtnl_lock();
1011         if (netif_running(netdev))
1012                 err = __qlcnic_up(adapter, netdev);
1013         rtnl_unlock();
1014
1015         return err;
1016 }
1017
1018 static void
1019 __qlcnic_down(struct qlcnic_adapter *adapter, struct net_device *netdev)
1020 {
1021         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
1022                 return;
1023
1024         if (!test_and_clear_bit(__QLCNIC_DEV_UP, &adapter->state))
1025                 return;
1026
1027         smp_mb();
1028         spin_lock(&adapter->tx_clean_lock);
1029         netif_carrier_off(netdev);
1030         netif_tx_disable(netdev);
1031
1032         qlcnic_free_mac_list(adapter);
1033
1034         qlcnic_nic_set_promisc(adapter, QLCNIC_NIU_NON_PROMISC_MODE);
1035
1036         qlcnic_napi_disable(adapter);
1037
1038         qlcnic_fw_destroy_ctx(adapter);
1039
1040         qlcnic_reset_rx_buffers_list(adapter);
1041         qlcnic_release_tx_buffers(adapter);
1042         spin_unlock(&adapter->tx_clean_lock);
1043 }
1044
1045 /* Usage: During suspend and firmware recovery module */
1046
1047 static void
1048 qlcnic_down(struct qlcnic_adapter *adapter, struct net_device *netdev)
1049 {
1050         rtnl_lock();
1051         if (netif_running(netdev))
1052                 __qlcnic_down(adapter, netdev);
1053         rtnl_unlock();
1054
1055 }
1056
1057 static int
1058 qlcnic_attach(struct qlcnic_adapter *adapter)
1059 {
1060         struct net_device *netdev = adapter->netdev;
1061         struct pci_dev *pdev = adapter->pdev;
1062         int err;
1063
1064         if (adapter->is_up == QLCNIC_ADAPTER_UP_MAGIC)
1065                 return 0;
1066
1067         err = qlcnic_napi_add(adapter, netdev);
1068         if (err)
1069                 return err;
1070
1071         err = qlcnic_alloc_sw_resources(adapter);
1072         if (err) {
1073                 dev_err(&pdev->dev, "Error in setting sw resources\n");
1074                 goto err_out_napi_del;
1075         }
1076
1077         err = qlcnic_alloc_hw_resources(adapter);
1078         if (err) {
1079                 dev_err(&pdev->dev, "Error in setting hw resources\n");
1080                 goto err_out_free_sw;
1081         }
1082
1083         err = qlcnic_request_irq(adapter);
1084         if (err) {
1085                 dev_err(&pdev->dev, "failed to setup interrupt\n");
1086                 goto err_out_free_hw;
1087         }
1088
1089         qlcnic_init_coalesce_defaults(adapter);
1090
1091         qlcnic_create_sysfs_entries(adapter);
1092
1093         adapter->is_up = QLCNIC_ADAPTER_UP_MAGIC;
1094         return 0;
1095
1096 err_out_free_hw:
1097         qlcnic_free_hw_resources(adapter);
1098 err_out_free_sw:
1099         qlcnic_free_sw_resources(adapter);
1100 err_out_napi_del:
1101         qlcnic_napi_del(adapter);
1102         return err;
1103 }
1104
1105 static void
1106 qlcnic_detach(struct qlcnic_adapter *adapter)
1107 {
1108         if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
1109                 return;
1110
1111         qlcnic_remove_sysfs_entries(adapter);
1112
1113         qlcnic_free_hw_resources(adapter);
1114         qlcnic_release_rx_buffers(adapter);
1115         qlcnic_free_irq(adapter);
1116         qlcnic_napi_del(adapter);
1117         qlcnic_free_sw_resources(adapter);
1118
1119         adapter->is_up = 0;
1120 }
1121
1122 void qlcnic_diag_free_res(struct net_device *netdev, int max_sds_rings)
1123 {
1124         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1125         struct qlcnic_host_sds_ring *sds_ring;
1126         int ring;
1127
1128         clear_bit(__QLCNIC_DEV_UP, &adapter->state);
1129         if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
1130                 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1131                         sds_ring = &adapter->recv_ctx.sds_rings[ring];
1132                         qlcnic_disable_int(sds_ring);
1133                 }
1134         }
1135
1136         qlcnic_fw_destroy_ctx(adapter);
1137
1138         qlcnic_detach(adapter);
1139
1140         adapter->diag_test = 0;
1141         adapter->max_sds_rings = max_sds_rings;
1142
1143         if (qlcnic_attach(adapter))
1144                 goto out;
1145
1146         if (netif_running(netdev))
1147                 __qlcnic_up(adapter, netdev);
1148 out:
1149         netif_device_attach(netdev);
1150 }
1151
1152 int qlcnic_diag_alloc_res(struct net_device *netdev, int test)
1153 {
1154         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1155         struct qlcnic_host_sds_ring *sds_ring;
1156         struct qlcnic_host_rds_ring *rds_ring;
1157         int ring;
1158         int ret;
1159
1160         netif_device_detach(netdev);
1161
1162         if (netif_running(netdev))
1163                 __qlcnic_down(adapter, netdev);
1164
1165         qlcnic_detach(adapter);
1166
1167         adapter->max_sds_rings = 1;
1168         adapter->diag_test = test;
1169
1170         ret = qlcnic_attach(adapter);
1171         if (ret) {
1172                 netif_device_attach(netdev);
1173                 return ret;
1174         }
1175
1176         ret = qlcnic_fw_create_ctx(adapter);
1177         if (ret) {
1178                 qlcnic_detach(adapter);
1179                 netif_device_attach(netdev);
1180                 return ret;
1181         }
1182
1183         for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1184                 rds_ring = &adapter->recv_ctx.rds_rings[ring];
1185                 qlcnic_post_rx_buffers(adapter, ring, rds_ring);
1186         }
1187
1188         if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
1189                 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1190                         sds_ring = &adapter->recv_ctx.sds_rings[ring];
1191                         qlcnic_enable_int(sds_ring);
1192                 }
1193         }
1194         set_bit(__QLCNIC_DEV_UP, &adapter->state);
1195
1196         return 0;
1197 }
1198
1199 /* Reset context in hardware only */
1200 static int
1201 qlcnic_reset_hw_context(struct qlcnic_adapter *adapter)
1202 {
1203         struct net_device *netdev = adapter->netdev;
1204
1205         if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
1206                 return -EBUSY;
1207
1208         netif_device_detach(netdev);
1209
1210         qlcnic_down(adapter, netdev);
1211
1212         qlcnic_up(adapter, netdev);
1213
1214         netif_device_attach(netdev);
1215
1216         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1217         return 0;
1218 }
1219
1220 int
1221 qlcnic_reset_context(struct qlcnic_adapter *adapter)
1222 {
1223         int err = 0;
1224         struct net_device *netdev = adapter->netdev;
1225
1226         if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
1227                 return -EBUSY;
1228
1229         if (adapter->is_up == QLCNIC_ADAPTER_UP_MAGIC) {
1230
1231                 netif_device_detach(netdev);
1232
1233                 if (netif_running(netdev))
1234                         __qlcnic_down(adapter, netdev);
1235
1236                 qlcnic_detach(adapter);
1237
1238                 if (netif_running(netdev)) {
1239                         err = qlcnic_attach(adapter);
1240                         if (!err)
1241                                 __qlcnic_up(adapter, netdev);
1242                 }
1243
1244                 netif_device_attach(netdev);
1245         }
1246
1247         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1248         return err;
1249 }
1250
1251 static int
1252 qlcnic_setup_netdev(struct qlcnic_adapter *adapter,
1253                 struct net_device *netdev, u8 pci_using_dac)
1254 {
1255         int err;
1256         struct pci_dev *pdev = adapter->pdev;
1257
1258         adapter->rx_csum = 1;
1259         adapter->mc_enabled = 0;
1260         adapter->max_mc_count = 38;
1261
1262         netdev->netdev_ops         = &qlcnic_netdev_ops;
1263         netdev->watchdog_timeo     = 5*HZ;
1264
1265         qlcnic_change_mtu(netdev, netdev->mtu);
1266
1267         SET_ETHTOOL_OPS(netdev, &qlcnic_ethtool_ops);
1268
1269         netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM |
1270                 NETIF_F_IPV6_CSUM | NETIF_F_GRO);
1271         netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM |
1272                 NETIF_F_IPV6_CSUM);
1273
1274         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_TSO) {
1275                 netdev->features |= (NETIF_F_TSO | NETIF_F_TSO6);
1276                 netdev->vlan_features |= (NETIF_F_TSO | NETIF_F_TSO6);
1277         }
1278
1279         if (pci_using_dac) {
1280                 netdev->features |= NETIF_F_HIGHDMA;
1281                 netdev->vlan_features |= NETIF_F_HIGHDMA;
1282         }
1283
1284         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_FVLANTX)
1285                 netdev->features |= (NETIF_F_HW_VLAN_TX);
1286
1287         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
1288                 netdev->features |= NETIF_F_LRO;
1289
1290         netdev->irq = adapter->msix_entries[0].vector;
1291
1292         if (qlcnic_read_mac_addr(adapter))
1293                 dev_warn(&pdev->dev, "failed to read mac addr\n");
1294
1295         netif_carrier_off(netdev);
1296         netif_stop_queue(netdev);
1297
1298         err = register_netdev(netdev);
1299         if (err) {
1300                 dev_err(&pdev->dev, "failed to register net device\n");
1301                 return err;
1302         }
1303
1304         return 0;
1305 }
1306
1307 static int qlcnic_set_dma_mask(struct pci_dev *pdev, u8 *pci_using_dac)
1308 {
1309         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) &&
1310                         !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
1311                 *pci_using_dac = 1;
1312         else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) &&
1313                         !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
1314                 *pci_using_dac = 0;
1315         else {
1316                 dev_err(&pdev->dev, "Unable to set DMA mask, aborting\n");
1317                 return -EIO;
1318         }
1319
1320         return 0;
1321 }
1322
1323 static int __devinit
1324 qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1325 {
1326         struct net_device *netdev = NULL;
1327         struct qlcnic_adapter *adapter = NULL;
1328         int err;
1329         uint8_t revision_id;
1330         uint8_t pci_using_dac;
1331
1332         err = pci_enable_device(pdev);
1333         if (err)
1334                 return err;
1335
1336         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1337                 err = -ENODEV;
1338                 goto err_out_disable_pdev;
1339         }
1340
1341         err = qlcnic_set_dma_mask(pdev, &pci_using_dac);
1342         if (err)
1343                 goto err_out_disable_pdev;
1344
1345         err = pci_request_regions(pdev, qlcnic_driver_name);
1346         if (err)
1347                 goto err_out_disable_pdev;
1348
1349         pci_set_master(pdev);
1350         pci_enable_pcie_error_reporting(pdev);
1351
1352         netdev = alloc_etherdev(sizeof(struct qlcnic_adapter));
1353         if (!netdev) {
1354                 dev_err(&pdev->dev, "failed to allocate net_device\n");
1355                 err = -ENOMEM;
1356                 goto err_out_free_res;
1357         }
1358
1359         SET_NETDEV_DEV(netdev, &pdev->dev);
1360
1361         adapter = netdev_priv(netdev);
1362         adapter->netdev  = netdev;
1363         adapter->pdev    = pdev;
1364         adapter->dev_rst_time = jiffies;
1365
1366         revision_id = pdev->revision;
1367         adapter->ahw.revision_id = revision_id;
1368
1369         rwlock_init(&adapter->ahw.crb_lock);
1370         mutex_init(&adapter->ahw.mem_lock);
1371
1372         spin_lock_init(&adapter->tx_clean_lock);
1373         INIT_LIST_HEAD(&adapter->mac_list);
1374
1375         err = qlcnic_setup_pci_map(adapter);
1376         if (err)
1377                 goto err_out_free_netdev;
1378
1379         /* This will be reset for mezz cards  */
1380         adapter->portnum = adapter->ahw.pci_func;
1381
1382         err = qlcnic_get_board_info(adapter);
1383         if (err) {
1384                 dev_err(&pdev->dev, "Error getting board config info.\n");
1385                 goto err_out_iounmap;
1386         }
1387
1388         if (qlcnic_read_mac_addr(adapter))
1389                 dev_warn(&pdev->dev, "failed to read mac addr\n");
1390
1391         if (qlcnic_setup_idc_param(adapter))
1392                 goto err_out_iounmap;
1393
1394         err = adapter->nic_ops->start_firmware(adapter);
1395         if (err) {
1396                 dev_err(&pdev->dev, "Loading fw failed.Please Reboot\n");
1397                 goto err_out_decr_ref;
1398         }
1399
1400         qlcnic_clear_stats(adapter);
1401
1402         qlcnic_setup_intr(adapter);
1403
1404         err = qlcnic_setup_netdev(adapter, netdev, pci_using_dac);
1405         if (err)
1406                 goto err_out_disable_msi;
1407
1408         pci_set_drvdata(pdev, adapter);
1409
1410         qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
1411
1412         switch (adapter->ahw.port_type) {
1413         case QLCNIC_GBE:
1414                 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1415                                 adapter->netdev->name);
1416                 break;
1417         case QLCNIC_XGBE:
1418                 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1419                                 adapter->netdev->name);
1420                 break;
1421         }
1422
1423         qlcnic_create_diag_entries(adapter);
1424
1425         return 0;
1426
1427 err_out_disable_msi:
1428         qlcnic_teardown_intr(adapter);
1429
1430 err_out_decr_ref:
1431         qlcnic_clr_all_drv_state(adapter);
1432
1433 err_out_iounmap:
1434         qlcnic_cleanup_pci_map(adapter);
1435
1436 err_out_free_netdev:
1437         free_netdev(netdev);
1438
1439 err_out_free_res:
1440         pci_release_regions(pdev);
1441
1442 err_out_disable_pdev:
1443         pci_set_drvdata(pdev, NULL);
1444         pci_disable_device(pdev);
1445         return err;
1446 }
1447
1448 static void __devexit qlcnic_remove(struct pci_dev *pdev)
1449 {
1450         struct qlcnic_adapter *adapter;
1451         struct net_device *netdev;
1452
1453         adapter = pci_get_drvdata(pdev);
1454         if (adapter == NULL)
1455                 return;
1456
1457         netdev = adapter->netdev;
1458
1459         qlcnic_cancel_fw_work(adapter);
1460
1461         unregister_netdev(netdev);
1462
1463         qlcnic_detach(adapter);
1464
1465         if (adapter->npars != NULL)
1466                 kfree(adapter->npars);
1467         if (adapter->eswitch != NULL)
1468                 kfree(adapter->eswitch);
1469
1470         qlcnic_clr_all_drv_state(adapter);
1471
1472         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1473
1474         qlcnic_teardown_intr(adapter);
1475
1476         qlcnic_remove_diag_entries(adapter);
1477
1478         qlcnic_cleanup_pci_map(adapter);
1479
1480         qlcnic_release_firmware(adapter);
1481
1482         pci_disable_pcie_error_reporting(pdev);
1483         pci_release_regions(pdev);
1484         pci_disable_device(pdev);
1485         pci_set_drvdata(pdev, NULL);
1486
1487         free_netdev(netdev);
1488 }
1489 static int __qlcnic_shutdown(struct pci_dev *pdev)
1490 {
1491         struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
1492         struct net_device *netdev = adapter->netdev;
1493         int retval;
1494
1495         netif_device_detach(netdev);
1496
1497         qlcnic_cancel_fw_work(adapter);
1498
1499         if (netif_running(netdev))
1500                 qlcnic_down(adapter, netdev);
1501
1502         qlcnic_clr_all_drv_state(adapter);
1503
1504         clear_bit(__QLCNIC_RESETTING, &adapter->state);
1505
1506         retval = pci_save_state(pdev);
1507         if (retval)
1508                 return retval;
1509
1510         if (qlcnic_wol_supported(adapter)) {
1511                 pci_enable_wake(pdev, PCI_D3cold, 1);
1512                 pci_enable_wake(pdev, PCI_D3hot, 1);
1513         }
1514
1515         return 0;
1516 }
1517
1518 static void qlcnic_shutdown(struct pci_dev *pdev)
1519 {
1520         if (__qlcnic_shutdown(pdev))
1521                 return;
1522
1523         pci_disable_device(pdev);
1524 }
1525
1526 #ifdef CONFIG_PM
1527 static int
1528 qlcnic_suspend(struct pci_dev *pdev, pm_message_t state)
1529 {
1530         int retval;
1531
1532         retval = __qlcnic_shutdown(pdev);
1533         if (retval)
1534                 return retval;
1535
1536         pci_set_power_state(pdev, pci_choose_state(pdev, state));
1537         return 0;
1538 }
1539
1540 static int
1541 qlcnic_resume(struct pci_dev *pdev)
1542 {
1543         struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
1544         struct net_device *netdev = adapter->netdev;
1545         int err;
1546
1547         err = pci_enable_device(pdev);
1548         if (err)
1549                 return err;
1550
1551         pci_set_power_state(pdev, PCI_D0);
1552         pci_set_master(pdev);
1553         pci_restore_state(pdev);
1554
1555         err = adapter->nic_ops->start_firmware(adapter);
1556         if (err) {
1557                 dev_err(&pdev->dev, "failed to start firmware\n");
1558                 return err;
1559         }
1560
1561         if (netif_running(netdev)) {
1562                 err = qlcnic_up(adapter, netdev);
1563                 if (err)
1564                         goto done;
1565
1566                 qlcnic_config_indev_addr(netdev, NETDEV_UP);
1567         }
1568 done:
1569         netif_device_attach(netdev);
1570         qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
1571         return 0;
1572 }
1573 #endif
1574
1575 static int qlcnic_open(struct net_device *netdev)
1576 {
1577         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1578         int err;
1579
1580         if (adapter->driver_mismatch)
1581                 return -EIO;
1582
1583         err = qlcnic_attach(adapter);
1584         if (err)
1585                 return err;
1586
1587         err = __qlcnic_up(adapter, netdev);
1588         if (err)
1589                 goto err_out;
1590
1591         netif_start_queue(netdev);
1592
1593         return 0;
1594
1595 err_out:
1596         qlcnic_detach(adapter);
1597         return err;
1598 }
1599
1600 /*
1601  * qlcnic_close - Disables a network interface entry point
1602  */
1603 static int qlcnic_close(struct net_device *netdev)
1604 {
1605         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1606
1607         __qlcnic_down(adapter, netdev);
1608         return 0;
1609 }
1610
1611 static void
1612 qlcnic_tso_check(struct net_device *netdev,
1613                 struct qlcnic_host_tx_ring *tx_ring,
1614                 struct cmd_desc_type0 *first_desc,
1615                 struct sk_buff *skb)
1616 {
1617         u8 opcode = TX_ETHER_PKT;
1618         __be16 protocol = skb->protocol;
1619         u16 flags = 0, vid = 0;
1620         int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1621         struct cmd_desc_type0 *hwdesc;
1622         struct vlan_ethhdr *vh;
1623         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1624         u32 producer = tx_ring->producer;
1625
1626         if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1627
1628                 vh = (struct vlan_ethhdr *)skb->data;
1629                 protocol = vh->h_vlan_encapsulated_proto;
1630                 flags = FLAGS_VLAN_TAGGED;
1631
1632         } else if (vlan_tx_tag_present(skb)) {
1633
1634                 flags = FLAGS_VLAN_OOB;
1635                 vid = vlan_tx_tag_get(skb);
1636                 qlcnic_set_tx_vlan_tci(first_desc, vid);
1637                 vlan_oob = 1;
1638         }
1639
1640         if (*(skb->data) & BIT_0) {
1641                 flags |= BIT_0;
1642                 memcpy(&first_desc->eth_addr, skb->data, ETH_ALEN);
1643         }
1644
1645         if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1646                         skb_shinfo(skb)->gso_size > 0) {
1647
1648                 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1649
1650                 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1651                 first_desc->total_hdr_length = hdr_len;
1652                 if (vlan_oob) {
1653                         first_desc->total_hdr_length += VLAN_HLEN;
1654                         first_desc->tcp_hdr_offset = VLAN_HLEN;
1655                         first_desc->ip_hdr_offset = VLAN_HLEN;
1656                         /* Only in case of TSO on vlan device */
1657                         flags |= FLAGS_VLAN_TAGGED;
1658                 }
1659
1660                 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1661                                 TX_TCP_LSO6 : TX_TCP_LSO;
1662                 tso = 1;
1663
1664         } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1665                 u8 l4proto;
1666
1667                 if (protocol == cpu_to_be16(ETH_P_IP)) {
1668                         l4proto = ip_hdr(skb)->protocol;
1669
1670                         if (l4proto == IPPROTO_TCP)
1671                                 opcode = TX_TCP_PKT;
1672                         else if (l4proto == IPPROTO_UDP)
1673                                 opcode = TX_UDP_PKT;
1674                 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1675                         l4proto = ipv6_hdr(skb)->nexthdr;
1676
1677                         if (l4proto == IPPROTO_TCP)
1678                                 opcode = TX_TCPV6_PKT;
1679                         else if (l4proto == IPPROTO_UDP)
1680                                 opcode = TX_UDPV6_PKT;
1681                 }
1682         }
1683
1684         first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1685         first_desc->ip_hdr_offset += skb_network_offset(skb);
1686         qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
1687
1688         if (!tso)
1689                 return;
1690
1691         /* For LSO, we need to copy the MAC/IP/TCP headers into
1692          * the descriptor ring
1693          */
1694         copied = 0;
1695         offset = 2;
1696
1697         if (vlan_oob) {
1698                 /* Create a TSO vlan header template for firmware */
1699
1700                 hwdesc = &tx_ring->desc_head[producer];
1701                 tx_ring->cmd_buf_arr[producer].skb = NULL;
1702
1703                 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1704                                 hdr_len + VLAN_HLEN);
1705
1706                 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1707                 skb_copy_from_linear_data(skb, vh, 12);
1708                 vh->h_vlan_proto = htons(ETH_P_8021Q);
1709                 vh->h_vlan_TCI = htons(vid);
1710                 skb_copy_from_linear_data_offset(skb, 12,
1711                                 (char *)vh + 16, copy_len - 16);
1712
1713                 copied = copy_len - VLAN_HLEN;
1714                 offset = 0;
1715
1716                 producer = get_next_index(producer, tx_ring->num_desc);
1717         }
1718
1719         while (copied < hdr_len) {
1720
1721                 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1722                                 (hdr_len - copied));
1723
1724                 hwdesc = &tx_ring->desc_head[producer];
1725                 tx_ring->cmd_buf_arr[producer].skb = NULL;
1726
1727                 skb_copy_from_linear_data_offset(skb, copied,
1728                                  (char *)hwdesc + offset, copy_len);
1729
1730                 copied += copy_len;
1731                 offset = 0;
1732
1733                 producer = get_next_index(producer, tx_ring->num_desc);
1734         }
1735
1736         tx_ring->producer = producer;
1737         barrier();
1738         adapter->stats.lso_frames++;
1739 }
1740
1741 static int
1742 qlcnic_map_tx_skb(struct pci_dev *pdev,
1743                 struct sk_buff *skb, struct qlcnic_cmd_buffer *pbuf)
1744 {
1745         struct qlcnic_skb_frag *nf;
1746         struct skb_frag_struct *frag;
1747         int i, nr_frags;
1748         dma_addr_t map;
1749
1750         nr_frags = skb_shinfo(skb)->nr_frags;
1751         nf = &pbuf->frag_array[0];
1752
1753         map = pci_map_single(pdev, skb->data,
1754                         skb_headlen(skb), PCI_DMA_TODEVICE);
1755         if (pci_dma_mapping_error(pdev, map))
1756                 goto out_err;
1757
1758         nf->dma = map;
1759         nf->length = skb_headlen(skb);
1760
1761         for (i = 0; i < nr_frags; i++) {
1762                 frag = &skb_shinfo(skb)->frags[i];
1763                 nf = &pbuf->frag_array[i+1];
1764
1765                 map = pci_map_page(pdev, frag->page, frag->page_offset,
1766                                 frag->size, PCI_DMA_TODEVICE);
1767                 if (pci_dma_mapping_error(pdev, map))
1768                         goto unwind;
1769
1770                 nf->dma = map;
1771                 nf->length = frag->size;
1772         }
1773
1774         return 0;
1775
1776 unwind:
1777         while (--i >= 0) {
1778                 nf = &pbuf->frag_array[i+1];
1779                 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
1780         }
1781
1782         nf = &pbuf->frag_array[0];
1783         pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1784
1785 out_err:
1786         return -ENOMEM;
1787 }
1788
1789 static inline void
1790 qlcnic_clear_cmddesc(u64 *desc)
1791 {
1792         desc[0] = 0ULL;
1793         desc[2] = 0ULL;
1794 }
1795
1796 netdev_tx_t
1797 qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1798 {
1799         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1800         struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
1801         struct qlcnic_cmd_buffer *pbuf;
1802         struct qlcnic_skb_frag *buffrag;
1803         struct cmd_desc_type0 *hwdesc, *first_desc;
1804         struct pci_dev *pdev;
1805         int i, k;
1806
1807         u32 producer;
1808         int frag_count, no_of_desc;
1809         u32 num_txd = tx_ring->num_desc;
1810
1811         if (!test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
1812                 netif_stop_queue(netdev);
1813                 return NETDEV_TX_BUSY;
1814         }
1815
1816         frag_count = skb_shinfo(skb)->nr_frags + 1;
1817
1818         /* 4 fragments per cmd des */
1819         no_of_desc = (frag_count + 3) >> 2;
1820
1821         if (unlikely(qlcnic_tx_avail(tx_ring) <= TX_STOP_THRESH)) {
1822                 netif_stop_queue(netdev);
1823                 smp_mb();
1824                 if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH)
1825                         netif_start_queue(netdev);
1826                 else {
1827                         adapter->stats.xmit_off++;
1828                         return NETDEV_TX_BUSY;
1829                 }
1830         }
1831
1832         producer = tx_ring->producer;
1833         pbuf = &tx_ring->cmd_buf_arr[producer];
1834
1835         pdev = adapter->pdev;
1836
1837         if (qlcnic_map_tx_skb(pdev, skb, pbuf)) {
1838                 adapter->stats.tx_dma_map_error++;
1839                 goto drop_packet;
1840         }
1841
1842         pbuf->skb = skb;
1843         pbuf->frag_count = frag_count;
1844
1845         first_desc = hwdesc = &tx_ring->desc_head[producer];
1846         qlcnic_clear_cmddesc((u64 *)hwdesc);
1847
1848         qlcnic_set_tx_frags_len(first_desc, frag_count, skb->len);
1849         qlcnic_set_tx_port(first_desc, adapter->portnum);
1850
1851         for (i = 0; i < frag_count; i++) {
1852
1853                 k = i % 4;
1854
1855                 if ((k == 0) && (i > 0)) {
1856                         /* move to next desc.*/
1857                         producer = get_next_index(producer, num_txd);
1858                         hwdesc = &tx_ring->desc_head[producer];
1859                         qlcnic_clear_cmddesc((u64 *)hwdesc);
1860                         tx_ring->cmd_buf_arr[producer].skb = NULL;
1861                 }
1862
1863                 buffrag = &pbuf->frag_array[i];
1864
1865                 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
1866                 switch (k) {
1867                 case 0:
1868                         hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1869                         break;
1870                 case 1:
1871                         hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
1872                         break;
1873                 case 2:
1874                         hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
1875                         break;
1876                 case 3:
1877                         hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
1878                         break;
1879                 }
1880         }
1881
1882         tx_ring->producer = get_next_index(producer, num_txd);
1883
1884         qlcnic_tso_check(netdev, tx_ring, first_desc, skb);
1885
1886         qlcnic_update_cmd_producer(adapter, tx_ring);
1887
1888         adapter->stats.txbytes += skb->len;
1889         adapter->stats.xmitcalled++;
1890
1891         return NETDEV_TX_OK;
1892
1893 drop_packet:
1894         adapter->stats.txdropped++;
1895         dev_kfree_skb_any(skb);
1896         return NETDEV_TX_OK;
1897 }
1898
1899 static int qlcnic_check_temp(struct qlcnic_adapter *adapter)
1900 {
1901         struct net_device *netdev = adapter->netdev;
1902         u32 temp, temp_state, temp_val;
1903         int rv = 0;
1904
1905         temp = QLCRD32(adapter, CRB_TEMP_STATE);
1906
1907         temp_state = qlcnic_get_temp_state(temp);
1908         temp_val = qlcnic_get_temp_val(temp);
1909
1910         if (temp_state == QLCNIC_TEMP_PANIC) {
1911                 dev_err(&netdev->dev,
1912                        "Device temperature %d degrees C exceeds"
1913                        " maximum allowed. Hardware has been shut down.\n",
1914                        temp_val);
1915                 rv = 1;
1916         } else if (temp_state == QLCNIC_TEMP_WARN) {
1917                 if (adapter->temp == QLCNIC_TEMP_NORMAL) {
1918                         dev_err(&netdev->dev,
1919                                "Device temperature %d degrees C "
1920                                "exceeds operating range."
1921                                " Immediate action needed.\n",
1922                                temp_val);
1923                 }
1924         } else {
1925                 if (adapter->temp == QLCNIC_TEMP_WARN) {
1926                         dev_info(&netdev->dev,
1927                                "Device temperature is now %d degrees C"
1928                                " in normal range.\n", temp_val);
1929                 }
1930         }
1931         adapter->temp = temp_state;
1932         return rv;
1933 }
1934
1935 void qlcnic_advert_link_change(struct qlcnic_adapter *adapter, int linkup)
1936 {
1937         struct net_device *netdev = adapter->netdev;
1938
1939         if (adapter->ahw.linkup && !linkup) {
1940                 dev_info(&netdev->dev, "NIC Link is down\n");
1941                 adapter->ahw.linkup = 0;
1942                 if (netif_running(netdev)) {
1943                         netif_carrier_off(netdev);
1944                         netif_stop_queue(netdev);
1945                 }
1946         } else if (!adapter->ahw.linkup && linkup) {
1947                 dev_info(&netdev->dev, "NIC Link is up\n");
1948                 adapter->ahw.linkup = 1;
1949                 if (netif_running(netdev)) {
1950                         netif_carrier_on(netdev);
1951                         netif_wake_queue(netdev);
1952                 }
1953         }
1954 }
1955
1956 static void qlcnic_tx_timeout(struct net_device *netdev)
1957 {
1958         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1959
1960         if (test_bit(__QLCNIC_RESETTING, &adapter->state))
1961                 return;
1962
1963         dev_err(&netdev->dev, "transmit timeout, resetting.\n");
1964
1965         if (++adapter->tx_timeo_cnt >= QLCNIC_MAX_TX_TIMEOUTS)
1966                 adapter->need_fw_reset = 1;
1967         else
1968                 adapter->reset_context = 1;
1969 }
1970
1971 static struct net_device_stats *qlcnic_get_stats(struct net_device *netdev)
1972 {
1973         struct qlcnic_adapter *adapter = netdev_priv(netdev);
1974         struct net_device_stats *stats = &netdev->stats;
1975
1976         memset(stats, 0, sizeof(*stats));
1977
1978         stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
1979         stats->tx_packets = adapter->stats.xmitfinished;
1980         stats->rx_bytes = adapter->stats.rxbytes + adapter->stats.lrobytes;
1981         stats->tx_bytes = adapter->stats.txbytes;
1982         stats->rx_dropped = adapter->stats.rxdropped;
1983         stats->tx_dropped = adapter->stats.txdropped;
1984
1985         return stats;
1986 }
1987
1988 static irqreturn_t qlcnic_clear_legacy_intr(struct qlcnic_adapter *adapter)
1989 {
1990         u32 status;
1991
1992         status = readl(adapter->isr_int_vec);
1993
1994         if (!(status & adapter->int_vec_bit))
1995                 return IRQ_NONE;
1996
1997         /* check interrupt state machine, to be sure */
1998         status = readl(adapter->crb_int_state_reg);
1999         if (!ISR_LEGACY_INT_TRIGGERED(status))
2000                 return IRQ_NONE;
2001
2002         writel(0xffffffff, adapter->tgt_status_reg);
2003         /* read twice to ensure write is flushed */
2004         readl(adapter->isr_int_vec);
2005         readl(adapter->isr_int_vec);
2006
2007         return IRQ_HANDLED;
2008 }
2009
2010 static irqreturn_t qlcnic_tmp_intr(int irq, void *data)
2011 {
2012         struct qlcnic_host_sds_ring *sds_ring = data;
2013         struct qlcnic_adapter *adapter = sds_ring->adapter;
2014
2015         if (adapter->flags & QLCNIC_MSIX_ENABLED)
2016                 goto done;
2017         else if (adapter->flags & QLCNIC_MSI_ENABLED) {
2018                 writel(0xffffffff, adapter->tgt_status_reg);
2019                 goto done;
2020         }
2021
2022         if (qlcnic_clear_legacy_intr(adapter) == IRQ_NONE)
2023                 return IRQ_NONE;
2024
2025 done:
2026         adapter->diag_cnt++;
2027         qlcnic_enable_int(sds_ring);
2028         return IRQ_HANDLED;
2029 }
2030
2031 static irqreturn_t qlcnic_intr(int irq, void *data)
2032 {
2033         struct qlcnic_host_sds_ring *sds_ring = data;
2034         struct qlcnic_adapter *adapter = sds_ring->adapter;
2035
2036         if (qlcnic_clear_legacy_intr(adapter) == IRQ_NONE)
2037                 return IRQ_NONE;
2038
2039         napi_schedule(&sds_ring->napi);
2040
2041         return IRQ_HANDLED;
2042 }
2043
2044 static irqreturn_t qlcnic_msi_intr(int irq, void *data)
2045 {
2046         struct qlcnic_host_sds_ring *sds_ring = data;
2047         struct qlcnic_adapter *adapter = sds_ring->adapter;
2048
2049         /* clear interrupt */
2050         writel(0xffffffff, adapter->tgt_status_reg);
2051
2052         napi_schedule(&sds_ring->napi);
2053         return IRQ_HANDLED;
2054 }
2055
2056 static irqreturn_t qlcnic_msix_intr(int irq, void *data)
2057 {
2058         struct qlcnic_host_sds_ring *sds_ring = data;
2059
2060         napi_schedule(&sds_ring->napi);
2061         return IRQ_HANDLED;
2062 }
2063
2064 static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter)
2065 {
2066         u32 sw_consumer, hw_consumer;
2067         int count = 0, i;
2068         struct qlcnic_cmd_buffer *buffer;
2069         struct pci_dev *pdev = adapter->pdev;
2070         struct net_device *netdev = adapter->netdev;
2071         struct qlcnic_skb_frag *frag;
2072         int done;
2073         struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
2074
2075         if (!spin_trylock(&adapter->tx_clean_lock))
2076                 return 1;
2077
2078         sw_consumer = tx_ring->sw_consumer;
2079         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
2080
2081         while (sw_consumer != hw_consumer) {
2082                 buffer = &tx_ring->cmd_buf_arr[sw_consumer];
2083                 if (buffer->skb) {
2084                         frag = &buffer->frag_array[0];
2085                         pci_unmap_single(pdev, frag->dma, frag->length,
2086                                          PCI_DMA_TODEVICE);
2087                         frag->dma = 0ULL;
2088                         for (i = 1; i < buffer->frag_count; i++) {
2089                                 frag++;
2090                                 pci_unmap_page(pdev, frag->dma, frag->length,
2091                                                PCI_DMA_TODEVICE);
2092                                 frag->dma = 0ULL;
2093                         }
2094
2095                         adapter->stats.xmitfinished++;
2096                         dev_kfree_skb_any(buffer->skb);
2097                         buffer->skb = NULL;
2098                 }
2099
2100                 sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
2101                 if (++count >= MAX_STATUS_HANDLE)
2102                         break;
2103         }
2104
2105         if (count && netif_running(netdev)) {
2106                 tx_ring->sw_consumer = sw_consumer;
2107
2108                 smp_mb();
2109
2110                 if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev)) {
2111                         if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) {
2112                                 netif_wake_queue(netdev);
2113                                 adapter->stats.xmit_on++;
2114                         }
2115                 }
2116                 adapter->tx_timeo_cnt = 0;
2117         }
2118         /*
2119          * If everything is freed up to consumer then check if the ring is full
2120          * If the ring is full then check if more needs to be freed and
2121          * schedule the call back again.
2122          *
2123          * This happens when there are 2 CPUs. One could be freeing and the
2124          * other filling it. If the ring is full when we get out of here and
2125          * the card has already interrupted the host then the host can miss the
2126          * interrupt.
2127          *
2128          * There is still a possible race condition and the host could miss an
2129          * interrupt. The card has to take care of this.
2130          */
2131         hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
2132         done = (sw_consumer == hw_consumer);
2133         spin_unlock(&adapter->tx_clean_lock);
2134
2135         return done;
2136 }
2137
2138 static int qlcnic_poll(struct napi_struct *napi, int budget)
2139 {
2140         struct qlcnic_host_sds_ring *sds_ring =
2141                 container_of(napi, struct qlcnic_host_sds_ring, napi);
2142
2143         struct qlcnic_adapter *adapter = sds_ring->adapter;
2144
2145         int tx_complete;
2146         int work_done;
2147
2148         tx_complete = qlcnic_process_cmd_ring(adapter);
2149
2150         work_done = qlcnic_process_rcv_ring(sds_ring, budget);
2151
2152         if ((work_done < budget) && tx_complete) {
2153                 napi_complete(&sds_ring->napi);
2154                 if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
2155                         qlcnic_enable_int(sds_ring);
2156         }
2157
2158         return work_done;
2159 }
2160
2161 static int qlcnic_rx_poll(struct napi_struct *napi, int budget)
2162 {
2163         struct qlcnic_host_sds_ring *sds_ring =
2164                 container_of(napi, struct qlcnic_host_sds_ring, napi);
2165
2166         struct qlcnic_adapter *adapter = sds_ring->adapter;
2167         int work_done;
2168
2169         work_done = qlcnic_process_rcv_ring(sds_ring, budget);
2170
2171         if (work_done < budget) {
2172                 napi_complete(&sds_ring->napi);
2173                 if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
2174                         qlcnic_enable_int(sds_ring);
2175         }
2176
2177         return work_done;
2178 }
2179
2180 #ifdef CONFIG_NET_POLL_CONTROLLER
2181 static void qlcnic_poll_controller(struct net_device *netdev)
2182 {
2183         struct qlcnic_adapter *adapter = netdev_priv(netdev);
2184         disable_irq(adapter->irq);
2185         qlcnic_intr(adapter->irq, adapter);
2186         enable_irq(adapter->irq);
2187 }
2188 #endif
2189
2190 static void
2191 qlcnic_idc_debug_info(struct qlcnic_adapter *adapter, u8 encoding)
2192 {
2193         u32 val;
2194
2195         val = adapter->portnum & 0xf;
2196         val |= encoding << 7;
2197         val |= (jiffies - adapter->dev_rst_time) << 8;
2198
2199         QLCWR32(adapter, QLCNIC_CRB_DRV_SCRATCH, val);
2200         adapter->dev_rst_time = jiffies;
2201 }
2202
2203 static int
2204 qlcnic_set_drv_state(struct qlcnic_adapter *adapter, u8 state)
2205 {
2206         u32  val;
2207
2208         WARN_ON(state != QLCNIC_DEV_NEED_RESET &&
2209                         state != QLCNIC_DEV_NEED_QUISCENT);
2210
2211         if (qlcnic_api_lock(adapter))
2212                 return -EIO;
2213
2214         val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2215
2216         if (state == QLCNIC_DEV_NEED_RESET)
2217                 QLC_DEV_SET_RST_RDY(val, adapter->portnum);
2218         else if (state == QLCNIC_DEV_NEED_QUISCENT)
2219                 QLC_DEV_SET_QSCNT_RDY(val, adapter->portnum);
2220
2221         QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2222
2223         qlcnic_api_unlock(adapter);
2224
2225         return 0;
2226 }
2227
2228 static int
2229 qlcnic_clr_drv_state(struct qlcnic_adapter *adapter)
2230 {
2231         u32  val;
2232
2233         if (qlcnic_api_lock(adapter))
2234                 return -EBUSY;
2235
2236         val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2237         QLC_DEV_CLR_RST_QSCNT(val, adapter->portnum);
2238         QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2239
2240         qlcnic_api_unlock(adapter);
2241
2242         return 0;
2243 }
2244
2245 static void
2246 qlcnic_clr_all_drv_state(struct qlcnic_adapter *adapter)
2247 {
2248         u32  val;
2249
2250         if (qlcnic_api_lock(adapter))
2251                 goto err;
2252
2253         val = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
2254         QLC_DEV_CLR_REF_CNT(val, adapter->portnum);
2255         QLCWR32(adapter, QLCNIC_CRB_DEV_REF_COUNT, val);
2256
2257         if (!(val & 0x11111111))
2258                 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_COLD);
2259
2260         val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2261         QLC_DEV_CLR_RST_QSCNT(val, adapter->portnum);
2262         QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2263
2264         qlcnic_api_unlock(adapter);
2265 err:
2266         adapter->fw_fail_cnt = 0;
2267         clear_bit(__QLCNIC_START_FW, &adapter->state);
2268         clear_bit(__QLCNIC_RESETTING, &adapter->state);
2269 }
2270
2271 /* Grab api lock, before checking state */
2272 static int
2273 qlcnic_check_drv_state(struct qlcnic_adapter *adapter)
2274 {
2275         int act, state;
2276
2277         state = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2278         act = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
2279
2280         if (((state & 0x11111111) == (act & 0x11111111)) ||
2281                         ((act & 0x11111111) == ((state >> 1) & 0x11111111)))
2282                 return 0;
2283         else
2284                 return 1;
2285 }
2286
2287 static int qlcnic_check_idc_ver(struct qlcnic_adapter *adapter)
2288 {
2289         u32 val = QLCRD32(adapter, QLCNIC_CRB_DRV_IDC_VER);
2290
2291         if (val != QLCNIC_DRV_IDC_VER) {
2292                 dev_warn(&adapter->pdev->dev, "IDC Version mismatch, driver's"
2293                         " idc ver = %x; reqd = %x\n", QLCNIC_DRV_IDC_VER, val);
2294         }
2295
2296         return 0;
2297 }
2298
2299 static int
2300 qlcnic_can_start_firmware(struct qlcnic_adapter *adapter)
2301 {
2302         u32 val, prev_state;
2303         u8 dev_init_timeo = adapter->dev_init_timeo;
2304         u8 portnum = adapter->portnum;
2305         u8 ret;
2306
2307         if (test_and_clear_bit(__QLCNIC_START_FW, &adapter->state))
2308                 return 1;
2309
2310         if (qlcnic_api_lock(adapter))
2311                 return -1;
2312
2313         val = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
2314         if (!(val & (1 << (portnum * 4)))) {
2315                 QLC_DEV_SET_REF_CNT(val, portnum);
2316                 QLCWR32(adapter, QLCNIC_CRB_DEV_REF_COUNT, val);
2317         }
2318
2319         prev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2320         QLCDB(adapter, HW, "Device state = %u\n", prev_state);
2321
2322         switch (prev_state) {
2323         case QLCNIC_DEV_COLD:
2324                 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_INITIALIZING);
2325                 QLCWR32(adapter, QLCNIC_CRB_DRV_IDC_VER, QLCNIC_DRV_IDC_VER);
2326                 qlcnic_idc_debug_info(adapter, 0);
2327                 qlcnic_api_unlock(adapter);
2328                 return 1;
2329
2330         case QLCNIC_DEV_READY:
2331                 ret = qlcnic_check_idc_ver(adapter);
2332                 qlcnic_api_unlock(adapter);
2333                 return ret;
2334
2335         case QLCNIC_DEV_NEED_RESET:
2336                 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2337                 QLC_DEV_SET_RST_RDY(val, portnum);
2338                 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2339                 break;
2340
2341         case QLCNIC_DEV_NEED_QUISCENT:
2342                 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2343                 QLC_DEV_SET_QSCNT_RDY(val, portnum);
2344                 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2345                 break;
2346
2347         case QLCNIC_DEV_FAILED:
2348                 dev_err(&adapter->pdev->dev, "Device in failed state.\n");
2349                 qlcnic_api_unlock(adapter);
2350                 return -1;
2351
2352         case QLCNIC_DEV_INITIALIZING:
2353         case QLCNIC_DEV_QUISCENT:
2354                 break;
2355         }
2356
2357         qlcnic_api_unlock(adapter);
2358
2359         do {
2360                 msleep(1000);
2361                 prev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2362
2363                 if (prev_state == QLCNIC_DEV_QUISCENT)
2364                         continue;
2365         } while ((prev_state != QLCNIC_DEV_READY) && --dev_init_timeo);
2366
2367         if (!dev_init_timeo) {
2368                 dev_err(&adapter->pdev->dev,
2369                         "Waiting for device to initialize timeout\n");
2370                 return -1;
2371         }
2372
2373         if (qlcnic_api_lock(adapter))
2374                 return -1;
2375
2376         val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2377         QLC_DEV_CLR_RST_QSCNT(val, portnum);
2378         QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2379
2380         ret = qlcnic_check_idc_ver(adapter);
2381         qlcnic_api_unlock(adapter);
2382
2383         return ret;
2384 }
2385
2386 static void
2387 qlcnic_fwinit_work(struct work_struct *work)
2388 {
2389         struct qlcnic_adapter *adapter = container_of(work,
2390                         struct qlcnic_adapter, fw_work.work);
2391         u32 dev_state = 0xf, npar_state;
2392
2393         if (qlcnic_api_lock(adapter))
2394                 goto err_ret;
2395
2396         dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2397         if (dev_state ==  QLCNIC_DEV_QUISCENT) {
2398                 qlcnic_api_unlock(adapter);
2399                 qlcnic_schedule_work(adapter, qlcnic_fwinit_work,
2400                                                 FW_POLL_DELAY * 2);
2401                 return;
2402         }
2403
2404         if (adapter->op_mode == QLCNIC_NON_PRIV_FUNC) {
2405                 npar_state = QLCRD32(adapter, QLCNIC_CRB_DEV_NPAR_STATE);
2406                 if (npar_state == QLCNIC_DEV_NPAR_RDY) {
2407                         qlcnic_api_unlock(adapter);
2408                         goto wait_npar;
2409                 } else {
2410                         qlcnic_schedule_work(adapter, qlcnic_fwinit_work,
2411                                 FW_POLL_DELAY);
2412                         qlcnic_api_unlock(adapter);
2413                         return;
2414                 }
2415         }
2416
2417         if (adapter->fw_wait_cnt++ > adapter->reset_ack_timeo) {
2418                 dev_err(&adapter->pdev->dev, "Reset:Failed to get ack %d sec\n",
2419                                         adapter->reset_ack_timeo);
2420                 goto skip_ack_check;
2421         }
2422
2423         if (!qlcnic_check_drv_state(adapter)) {
2424 skip_ack_check:
2425                 dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2426
2427                 if (dev_state == QLCNIC_DEV_NEED_QUISCENT) {
2428                         QLCWR32(adapter, QLCNIC_CRB_DEV_STATE,
2429                                                 QLCNIC_DEV_QUISCENT);
2430                         qlcnic_schedule_work(adapter, qlcnic_fwinit_work,
2431                                                 FW_POLL_DELAY * 2);
2432                         QLCDB(adapter, DRV, "Quiscing the driver\n");
2433                         qlcnic_idc_debug_info(adapter, 0);
2434
2435                         qlcnic_api_unlock(adapter);
2436                         return;
2437                 }
2438
2439                 if (dev_state == QLCNIC_DEV_NEED_RESET) {
2440                         QLCWR32(adapter, QLCNIC_CRB_DEV_STATE,
2441                                                 QLCNIC_DEV_INITIALIZING);
2442                         set_bit(__QLCNIC_START_FW, &adapter->state);
2443                         QLCDB(adapter, DRV, "Restarting fw\n");
2444                         qlcnic_idc_debug_info(adapter, 0);
2445                 }
2446
2447                 qlcnic_api_unlock(adapter);
2448
2449                 if (!adapter->nic_ops->start_firmware(adapter)) {
2450                         qlcnic_schedule_work(adapter, qlcnic_attach_work, 0);
2451                         return;
2452                 }
2453                 goto err_ret;
2454         }
2455
2456         qlcnic_api_unlock(adapter);
2457
2458 wait_npar:
2459         dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2460         QLCDB(adapter, HW, "Func waiting: Device state=%u\n", dev_state);
2461
2462         switch (dev_state) {
2463         case QLCNIC_DEV_QUISCENT:
2464         case QLCNIC_DEV_NEED_QUISCENT:
2465         case QLCNIC_DEV_NEED_RESET:
2466                 qlcnic_schedule_work(adapter,
2467                         qlcnic_fwinit_work, FW_POLL_DELAY);
2468                 return;
2469         case QLCNIC_DEV_FAILED:
2470                 break;
2471
2472         default:
2473                 if (!adapter->nic_ops->start_firmware(adapter)) {
2474                         qlcnic_schedule_work(adapter, qlcnic_attach_work, 0);
2475                         return;
2476                 }
2477         }
2478
2479 err_ret:
2480         dev_err(&adapter->pdev->dev, "Fwinit work failed state=%u "
2481                 "fw_wait_cnt=%u\n", dev_state, adapter->fw_wait_cnt);
2482         netif_device_attach(adapter->netdev);
2483         qlcnic_clr_all_drv_state(adapter);
2484 }
2485
2486 static void
2487 qlcnic_detach_work(struct work_struct *work)
2488 {
2489         struct qlcnic_adapter *adapter = container_of(work,
2490                         struct qlcnic_adapter, fw_work.work);
2491         struct net_device *netdev = adapter->netdev;
2492         u32 status;
2493
2494         netif_device_detach(netdev);
2495
2496         qlcnic_down(adapter, netdev);
2497
2498         status = QLCRD32(adapter, QLCNIC_PEG_HALT_STATUS1);
2499
2500         if (status & QLCNIC_RCODE_FATAL_ERROR)
2501                 goto err_ret;
2502
2503         if (adapter->temp == QLCNIC_TEMP_PANIC)
2504                 goto err_ret;
2505
2506         if (qlcnic_set_drv_state(adapter, adapter->dev_state))
2507                 goto err_ret;
2508
2509         adapter->fw_wait_cnt = 0;
2510
2511         qlcnic_schedule_work(adapter, qlcnic_fwinit_work, FW_POLL_DELAY);
2512
2513         return;
2514
2515 err_ret:
2516         dev_err(&adapter->pdev->dev, "detach failed; status=%d temp=%d\n",
2517                         status, adapter->temp);
2518         netif_device_attach(netdev);
2519         qlcnic_clr_all_drv_state(adapter);
2520
2521 }
2522
2523 /*Transit to RESET state from READY state only */
2524 static void
2525 qlcnic_dev_request_reset(struct qlcnic_adapter *adapter)
2526 {
2527         u32 state;
2528
2529         adapter->need_fw_reset = 1;
2530         if (qlcnic_api_lock(adapter))
2531                 return;
2532
2533         state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2534
2535         if (state == QLCNIC_DEV_READY) {
2536                 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_NEED_RESET);
2537                 QLCDB(adapter, DRV, "NEED_RESET state set\n");
2538                 qlcnic_idc_debug_info(adapter, 0);
2539         }
2540
2541         qlcnic_api_unlock(adapter);
2542 }
2543
2544 /* Transit to NPAR READY state from NPAR NOT READY state */
2545 static void
2546 qlcnic_dev_set_npar_ready(struct qlcnic_adapter *adapter)
2547 {
2548         u32 state;
2549
2550         if (!(adapter->flags & QLCNIC_ESWITCH_ENABLED) ||
2551                 adapter->op_mode == QLCNIC_NON_PRIV_FUNC)
2552                 return;
2553         if (qlcnic_api_lock(adapter))
2554                 return;
2555
2556         state = QLCRD32(adapter, QLCNIC_CRB_DEV_NPAR_STATE);
2557
2558         if (state != QLCNIC_DEV_NPAR_RDY) {
2559                 QLCWR32(adapter, QLCNIC_CRB_DEV_NPAR_STATE,
2560                         QLCNIC_DEV_NPAR_RDY);
2561                 QLCDB(adapter, DRV, "NPAR READY state set\n");
2562         }
2563
2564         qlcnic_api_unlock(adapter);
2565 }
2566
2567 static void
2568 qlcnic_schedule_work(struct qlcnic_adapter *adapter,
2569                 work_func_t func, int delay)
2570 {
2571         if (test_bit(__QLCNIC_AER, &adapter->state))
2572                 return;
2573
2574         INIT_DELAYED_WORK(&adapter->fw_work, func);
2575         schedule_delayed_work(&adapter->fw_work, round_jiffies_relative(delay));
2576 }
2577
2578 static void
2579 qlcnic_cancel_fw_work(struct qlcnic_adapter *adapter)
2580 {
2581         while (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
2582                 msleep(10);
2583
2584         cancel_delayed_work_sync(&adapter->fw_work);
2585 }
2586
2587 static void
2588 qlcnic_attach_work(struct work_struct *work)
2589 {
2590         struct qlcnic_adapter *adapter = container_of(work,
2591                                 struct qlcnic_adapter, fw_work.work);
2592         struct net_device *netdev = adapter->netdev;
2593
2594         if (netif_running(netdev)) {
2595                 if (qlcnic_up(adapter, netdev))
2596                         goto done;
2597
2598                 qlcnic_config_indev_addr(netdev, NETDEV_UP);
2599         }
2600
2601 done:
2602         netif_device_attach(netdev);
2603         adapter->fw_fail_cnt = 0;
2604         clear_bit(__QLCNIC_RESETTING, &adapter->state);
2605
2606         if (!qlcnic_clr_drv_state(adapter))
2607                 qlcnic_schedule_work(adapter, qlcnic_fw_poll_work,
2608                                                         FW_POLL_DELAY);
2609 }
2610
2611 static int
2612 qlcnic_check_health(struct qlcnic_adapter *adapter)
2613 {
2614         u32 state = 0, heartbit;
2615         struct net_device *netdev = adapter->netdev;
2616
2617         if (qlcnic_check_temp(adapter))
2618                 goto detach;
2619
2620         if (adapter->need_fw_reset)
2621                 qlcnic_dev_request_reset(adapter);
2622
2623         state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2624         if (state == QLCNIC_DEV_NEED_RESET || state == QLCNIC_DEV_NEED_QUISCENT)
2625                 adapter->need_fw_reset = 1;
2626
2627         heartbit = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
2628         if (heartbit != adapter->heartbit) {
2629                 adapter->heartbit = heartbit;
2630                 adapter->fw_fail_cnt = 0;
2631                 if (adapter->need_fw_reset)
2632                         goto detach;
2633
2634                 if (adapter->reset_context &&
2635                     auto_fw_reset == AUTO_FW_RESET_ENABLED) {
2636                         qlcnic_reset_hw_context(adapter);
2637                         adapter->netdev->trans_start = jiffies;
2638                 }
2639
2640                 return 0;
2641         }
2642
2643         if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2644                 return 0;
2645
2646         qlcnic_dev_request_reset(adapter);
2647
2648         if ((auto_fw_reset == AUTO_FW_RESET_ENABLED))
2649                 clear_bit(__QLCNIC_FW_ATTACHED, &adapter->state);
2650
2651         dev_info(&netdev->dev, "firmware hang detected\n");
2652
2653 detach:
2654         adapter->dev_state = (state == QLCNIC_DEV_NEED_QUISCENT) ? state :
2655                 QLCNIC_DEV_NEED_RESET;
2656
2657         if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
2658                 !test_and_set_bit(__QLCNIC_RESETTING, &adapter->state)) {
2659
2660                 qlcnic_schedule_work(adapter, qlcnic_detach_work, 0);
2661                 QLCDB(adapter, DRV, "fw recovery scheduled.\n");
2662         }
2663
2664         return 1;
2665 }
2666
2667 static void
2668 qlcnic_fw_poll_work(struct work_struct *work)
2669 {
2670         struct qlcnic_adapter *adapter = container_of(work,
2671                                 struct qlcnic_adapter, fw_work.work);
2672
2673         if (test_bit(__QLCNIC_RESETTING, &adapter->state))
2674                 goto reschedule;
2675
2676
2677         if (qlcnic_check_health(adapter))
2678                 return;
2679
2680 reschedule:
2681         qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
2682 }
2683
2684 static int qlcnic_is_first_func(struct pci_dev *pdev)
2685 {
2686         struct pci_dev *oth_pdev;
2687         int val = pdev->devfn;
2688
2689         while (val-- > 0) {
2690                 oth_pdev = pci_get_domain_bus_and_slot(pci_domain_nr
2691                         (pdev->bus), pdev->bus->number,
2692                         PCI_DEVFN(PCI_SLOT(pdev->devfn), val));
2693                 if (!oth_pdev)
2694                         continue;
2695
2696                 if (oth_pdev->current_state != PCI_D3cold) {
2697                         pci_dev_put(oth_pdev);
2698                         return 0;
2699                 }
2700                 pci_dev_put(oth_pdev);
2701         }
2702         return 1;
2703 }
2704
2705 static int qlcnic_attach_func(struct pci_dev *pdev)
2706 {
2707         int err, first_func;
2708         struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
2709         struct net_device *netdev = adapter->netdev;
2710
2711         pdev->error_state = pci_channel_io_normal;
2712
2713         err = pci_enable_device(pdev);
2714         if (err)
2715                 return err;
2716
2717         pci_set_power_state(pdev, PCI_D0);
2718         pci_set_master(pdev);
2719         pci_restore_state(pdev);
2720
2721         first_func = qlcnic_is_first_func(pdev);
2722
2723         if (qlcnic_api_lock(adapter))
2724                 return -EINVAL;
2725
2726         if (first_func) {
2727                 adapter->need_fw_reset = 1;
2728                 set_bit(__QLCNIC_START_FW, &adapter->state);
2729                 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_INITIALIZING);
2730                 QLCDB(adapter, DRV, "Restarting fw\n");
2731         }
2732         qlcnic_api_unlock(adapter);
2733
2734         err = adapter->nic_ops->start_firmware(adapter);
2735         if (err)
2736                 return err;
2737
2738         qlcnic_clr_drv_state(adapter);
2739         qlcnic_setup_intr(adapter);
2740
2741         if (netif_running(netdev)) {
2742                 err = qlcnic_attach(adapter);
2743                 if (err) {
2744                         qlcnic_clr_all_drv_state(adapter);
2745                         clear_bit(__QLCNIC_AER, &adapter->state);
2746                         netif_device_attach(netdev);
2747                         return err;
2748                 }
2749
2750                 err = qlcnic_up(adapter, netdev);
2751                 if (err)
2752                         goto done;
2753
2754                 qlcnic_config_indev_addr(netdev, NETDEV_UP);
2755         }
2756  done:
2757         netif_device_attach(netdev);
2758         return err;
2759 }
2760
2761 static pci_ers_result_t qlcnic_io_error_detected(struct pci_dev *pdev,
2762                                                 pci_channel_state_t state)
2763 {
2764         struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
2765         struct net_device *netdev = adapter->netdev;
2766
2767         if (state == pci_channel_io_perm_failure)
2768                 return PCI_ERS_RESULT_DISCONNECT;
2769
2770         if (state == pci_channel_io_normal)
2771                 return PCI_ERS_RESULT_RECOVERED;
2772
2773         set_bit(__QLCNIC_AER, &adapter->state);
2774         netif_device_detach(netdev);
2775
2776         cancel_delayed_work_sync(&adapter->fw_work);
2777
2778         if (netif_running(netdev))
2779                 qlcnic_down(adapter, netdev);
2780
2781         qlcnic_detach(adapter);
2782         qlcnic_teardown_intr(adapter);
2783
2784         clear_bit(__QLCNIC_RESETTING, &adapter->state);
2785
2786         pci_save_state(pdev);
2787         pci_disable_device(pdev);
2788
2789         return PCI_ERS_RESULT_NEED_RESET;
2790 }
2791
2792 static pci_ers_result_t qlcnic_io_slot_reset(struct pci_dev *pdev)
2793 {
2794         return qlcnic_attach_func(pdev) ? PCI_ERS_RESULT_DISCONNECT :
2795                                 PCI_ERS_RESULT_RECOVERED;
2796 }
2797
2798 static void qlcnic_io_resume(struct pci_dev *pdev)
2799 {
2800         struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
2801
2802         pci_cleanup_aer_uncorrect_error_status(pdev);
2803
2804         if (QLCRD32(adapter, QLCNIC_CRB_DEV_STATE) == QLCNIC_DEV_READY &&
2805             test_and_clear_bit(__QLCNIC_AER, &adapter->state))
2806                 qlcnic_schedule_work(adapter, qlcnic_fw_poll_work,
2807                                                 FW_POLL_DELAY);
2808 }
2809
2810
2811 static int
2812 qlcnicvf_start_firmware(struct qlcnic_adapter *adapter)
2813 {
2814         int err;
2815
2816         err = qlcnic_can_start_firmware(adapter);
2817         if (err)
2818                 return err;
2819
2820         qlcnic_check_options(adapter);
2821
2822         adapter->need_fw_reset = 0;
2823
2824         return err;
2825 }
2826
2827 static int
2828 qlcnicvf_config_bridged_mode(struct qlcnic_adapter *adapter, u32 enable)
2829 {
2830         return -EOPNOTSUPP;
2831 }
2832
2833 static int
2834 qlcnicvf_config_led(struct qlcnic_adapter *adapter, u32 state, u32 rate)
2835 {
2836         return -EOPNOTSUPP;
2837 }
2838
2839 static ssize_t
2840 qlcnic_store_bridged_mode(struct device *dev,
2841                 struct device_attribute *attr, const char *buf, size_t len)
2842 {
2843         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2844         unsigned long new;
2845         int ret = -EINVAL;
2846
2847         if (!(adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG))
2848                 goto err_out;
2849
2850         if (!test_bit(__QLCNIC_DEV_UP, &adapter->state))
2851                 goto err_out;
2852
2853         if (strict_strtoul(buf, 2, &new))
2854                 goto err_out;
2855
2856         if (!adapter->nic_ops->config_bridged_mode(adapter, !!new))
2857                 ret = len;
2858
2859 err_out:
2860         return ret;
2861 }
2862
2863 static ssize_t
2864 qlcnic_show_bridged_mode(struct device *dev,
2865                 struct device_attribute *attr, char *buf)
2866 {
2867         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2868         int bridged_mode = 0;
2869
2870         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
2871                 bridged_mode = !!(adapter->flags & QLCNIC_BRIDGE_ENABLED);
2872
2873         return sprintf(buf, "%d\n", bridged_mode);
2874 }
2875
2876 static struct device_attribute dev_attr_bridged_mode = {
2877        .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2878        .show = qlcnic_show_bridged_mode,
2879        .store = qlcnic_store_bridged_mode,
2880 };
2881
2882 static ssize_t
2883 qlcnic_store_diag_mode(struct device *dev,
2884                 struct device_attribute *attr, const char *buf, size_t len)
2885 {
2886         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2887         unsigned long new;
2888
2889         if (strict_strtoul(buf, 2, &new))
2890                 return -EINVAL;
2891
2892         if (!!new != !!(adapter->flags & QLCNIC_DIAG_ENABLED))
2893                 adapter->flags ^= QLCNIC_DIAG_ENABLED;
2894
2895         return len;
2896 }
2897
2898 static ssize_t
2899 qlcnic_show_diag_mode(struct device *dev,
2900                 struct device_attribute *attr, char *buf)
2901 {
2902         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2903
2904         return sprintf(buf, "%d\n",
2905                         !!(adapter->flags & QLCNIC_DIAG_ENABLED));
2906 }
2907
2908 static struct device_attribute dev_attr_diag_mode = {
2909         .attr = {.name = "diag_mode", .mode = (S_IRUGO | S_IWUSR)},
2910         .show = qlcnic_show_diag_mode,
2911         .store = qlcnic_store_diag_mode,
2912 };
2913
2914 static int
2915 qlcnic_sysfs_validate_crb(struct qlcnic_adapter *adapter,
2916                 loff_t offset, size_t size)
2917 {
2918         size_t crb_size = 4;
2919
2920         if (!(adapter->flags & QLCNIC_DIAG_ENABLED))
2921                 return -EIO;
2922
2923         if (offset < QLCNIC_PCI_CRBSPACE) {
2924                 if (ADDR_IN_RANGE(offset, QLCNIC_PCI_CAMQM,
2925                                         QLCNIC_PCI_CAMQM_END))
2926                         crb_size = 8;
2927                 else
2928                         return -EINVAL;
2929         }
2930
2931         if ((size != crb_size) || (offset & (crb_size-1)))
2932                 return  -EINVAL;
2933
2934         return 0;
2935 }
2936
2937 static ssize_t
2938 qlcnic_sysfs_read_crb(struct file *filp, struct kobject *kobj,
2939                 struct bin_attribute *attr,
2940                 char *buf, loff_t offset, size_t size)
2941 {
2942         struct device *dev = container_of(kobj, struct device, kobj);
2943         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2944         u32 data;
2945         u64 qmdata;
2946         int ret;
2947
2948         ret = qlcnic_sysfs_validate_crb(adapter, offset, size);
2949         if (ret != 0)
2950                 return ret;
2951
2952         if (ADDR_IN_RANGE(offset, QLCNIC_PCI_CAMQM, QLCNIC_PCI_CAMQM_END)) {
2953                 qlcnic_pci_camqm_read_2M(adapter, offset, &qmdata);
2954                 memcpy(buf, &qmdata, size);
2955         } else {
2956                 data = QLCRD32(adapter, offset);
2957                 memcpy(buf, &data, size);
2958         }
2959         return size;
2960 }
2961
2962 static ssize_t
2963 qlcnic_sysfs_write_crb(struct file *filp, struct kobject *kobj,
2964                 struct bin_attribute *attr,
2965                 char *buf, loff_t offset, size_t size)
2966 {
2967         struct device *dev = container_of(kobj, struct device, kobj);
2968         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2969         u32 data;
2970         u64 qmdata;
2971         int ret;
2972
2973         ret = qlcnic_sysfs_validate_crb(adapter, offset, size);
2974         if (ret != 0)
2975                 return ret;
2976
2977         if (ADDR_IN_RANGE(offset, QLCNIC_PCI_CAMQM, QLCNIC_PCI_CAMQM_END)) {
2978                 memcpy(&qmdata, buf, size);
2979                 qlcnic_pci_camqm_write_2M(adapter, offset, qmdata);
2980         } else {
2981                 memcpy(&data, buf, size);
2982                 QLCWR32(adapter, offset, data);
2983         }
2984         return size;
2985 }
2986
2987 static int
2988 qlcnic_sysfs_validate_mem(struct qlcnic_adapter *adapter,
2989                 loff_t offset, size_t size)
2990 {
2991         if (!(adapter->flags & QLCNIC_DIAG_ENABLED))
2992                 return -EIO;
2993
2994         if ((size != 8) || (offset & 0x7))
2995                 return  -EIO;
2996
2997         return 0;
2998 }
2999
3000 static ssize_t
3001 qlcnic_sysfs_read_mem(struct file *filp, struct kobject *kobj,
3002                 struct bin_attribute *attr,
3003                 char *buf, loff_t offset, size_t size)
3004 {
3005         struct device *dev = container_of(kobj, struct device, kobj);
3006         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
3007         u64 data;
3008         int ret;
3009
3010         ret = qlcnic_sysfs_validate_mem(adapter, offset, size);
3011         if (ret != 0)
3012                 return ret;
3013
3014         if (qlcnic_pci_mem_read_2M(adapter, offset, &data))
3015                 return -EIO;
3016
3017         memcpy(buf, &data, size);
3018
3019         return size;
3020 }
3021
3022 static ssize_t
3023 qlcnic_sysfs_write_mem(struct file *filp, struct kobject *kobj,
3024                 struct bin_attribute *attr,
3025                 char *buf, loff_t offset, size_t size)
3026 {
3027         struct device *dev = container_of(kobj, struct device, kobj);
3028         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
3029         u64 data;
3030         int ret;
3031
3032         ret = qlcnic_sysfs_validate_mem(adapter, offset, size);
3033         if (ret != 0)
3034                 return ret;
3035
3036         memcpy(&data, buf, size);
3037
3038         if (qlcnic_pci_mem_write_2M(adapter, offset, data))
3039                 return -EIO;
3040
3041         return size;
3042 }
3043
3044
3045 static struct bin_attribute bin_attr_crb = {
3046         .attr = {.name = "crb", .mode = (S_IRUGO | S_IWUSR)},
3047         .size = 0,
3048         .read = qlcnic_sysfs_read_crb,
3049         .write = qlcnic_sysfs_write_crb,
3050 };
3051
3052 static struct bin_attribute bin_attr_mem = {
3053         .attr = {.name = "mem", .mode = (S_IRUGO | S_IWUSR)},
3054         .size = 0,
3055         .read = qlcnic_sysfs_read_mem,
3056         .write = qlcnic_sysfs_write_mem,
3057 };
3058
3059 static int
3060 validate_pm_config(struct qlcnic_adapter *adapter,
3061                         struct qlcnic_pm_func_cfg *pm_cfg, int count)
3062 {
3063
3064         u8 src_pci_func, s_esw_id, d_esw_id;
3065         u8 dest_pci_func;
3066         int i;
3067
3068         for (i = 0; i < count; i++) {
3069                 src_pci_func = pm_cfg[i].pci_func;
3070                 dest_pci_func = pm_cfg[i].dest_npar;
3071                 if (src_pci_func >= QLCNIC_MAX_PCI_FUNC
3072                                 || dest_pci_func >= QLCNIC_MAX_PCI_FUNC)
3073                         return QL_STATUS_INVALID_PARAM;
3074
3075                 if (adapter->npars[src_pci_func].type != QLCNIC_TYPE_NIC)
3076                         return QL_STATUS_INVALID_PARAM;
3077
3078                 if (adapter->npars[dest_pci_func].type != QLCNIC_TYPE_NIC)
3079                         return QL_STATUS_INVALID_PARAM;
3080
3081                 if (!IS_VALID_MODE(pm_cfg[i].action))
3082                         return QL_STATUS_INVALID_PARAM;
3083
3084                 s_esw_id = adapter->npars[src_pci_func].phy_port;
3085                 d_esw_id = adapter->npars[dest_pci_func].phy_port;
3086
3087                 if (s_esw_id != d_esw_id)
3088                         return QL_STATUS_INVALID_PARAM;
3089
3090         }
3091         return 0;
3092
3093 }
3094
3095 static ssize_t
3096 qlcnic_sysfs_write_pm_config(struct file *filp, struct kobject *kobj,
3097         struct bin_attribute *attr, char *buf, loff_t offset, size_t size)
3098 {
3099         struct device *dev = container_of(kobj, struct device, kobj);
3100         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
3101         struct qlcnic_pm_func_cfg *pm_cfg;
3102         u32 id, action, pci_func;
3103         int count, rem, i, ret;
3104
3105         count   = size / sizeof(struct qlcnic_pm_func_cfg);
3106         rem     = size % sizeof(struct qlcnic_pm_func_cfg);
3107         if (rem)
3108                 return QL_STATUS_INVALID_PARAM;
3109
3110         pm_cfg = (struct qlcnic_pm_func_cfg *) buf;
3111
3112         ret = validate_pm_config(adapter, pm_cfg, count);
3113         if (ret)
3114                 return ret;
3115         for (i = 0; i < count; i++) {
3116                 pci_func = pm_cfg[i].pci_func;
3117                 action = pm_cfg[i].action;
3118                 id = adapter->npars[pci_func].phy_port;
3119                 ret = qlcnic_config_port_mirroring(adapter, id,
3120                                                 action, pci_func);
3121                 if (ret)
3122                         return ret;
3123         }
3124
3125         for (i = 0; i < count; i++) {
3126                 pci_func = pm_cfg[i].pci_func;
3127                 id = adapter->npars[pci_func].phy_port;
3128                 adapter->npars[pci_func].enable_pm = pm_cfg[i].action;
3129                 adapter->npars[pci_func].dest_npar = id;
3130         }
3131         return size;
3132 }
3133
3134 static ssize_t
3135 qlcnic_sysfs_read_pm_config(struct file *filp, struct kobject *kobj,
3136         struct bin_attribute *attr, char *buf, loff_t offset, size_t size)
3137 {
3138         struct device *dev = container_of(kobj, struct device, kobj);
3139         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
3140         struct qlcnic_pm_func_cfg pm_cfg[QLCNIC_MAX_PCI_FUNC];
3141         int i;
3142
3143         if (size != sizeof(pm_cfg))
3144                 return QL_STATUS_INVALID_PARAM;
3145
3146         for (i = 0; i < QLCNIC_MAX_PCI_FUNC; i++) {
3147                 if (adapter->npars[i].type != QLCNIC_TYPE_NIC)
3148                         continue;
3149                 pm_cfg[i].action = adapter->npars[i].enable_pm;
3150                 pm_cfg[i].dest_npar = 0;
3151                 pm_cfg[i].pci_func = i;
3152         }
3153         memcpy(buf, &pm_cfg, size);
3154
3155         return size;
3156 }
3157
3158 static int
3159 validate_esw_config(struct qlcnic_adapter *adapter,
3160                         struct qlcnic_esw_func_cfg *esw_cfg, int count)
3161 {
3162         u8 pci_func;
3163         int i;
3164
3165         for (i = 0; i < count; i++) {
3166                 pci_func = esw_cfg[i].pci_func;
3167                 if (pci_func >= QLCNIC_MAX_PCI_FUNC)
3168                         return QL_STATUS_INVALID_PARAM;
3169
3170                 if (adapter->npars[i].type != QLCNIC_TYPE_NIC)
3171                         return QL_STATUS_INVALID_PARAM;
3172
3173                 if (esw_cfg->host_vlan_tag == 1)
3174                         if (!IS_VALID_VLAN(esw_cfg[i].vlan_id))
3175                                 return QL_STATUS_INVALID_PARAM;
3176
3177                 if (!IS_VALID_MODE(esw_cfg[i].promisc_mode)
3178                                 || !IS_VALID_MODE(esw_cfg[i].host_vlan_tag)
3179                                 || !IS_VALID_MODE(esw_cfg[i].mac_learning)
3180                                 || !IS_VALID_MODE(esw_cfg[i].discard_tagged))
3181                         return QL_STATUS_INVALID_PARAM;
3182         }
3183
3184         return 0;
3185 }
3186
3187 static ssize_t
3188 qlcnic_sysfs_write_esw_config(struct file *file, struct kobject *kobj,
3189         struct bin_attribute *attr, char *buf, loff_t offset, size_t size)
3190 {
3191         struct device *dev = container_of(kobj, struct device, kobj);
3192         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
3193         struct qlcnic_esw_func_cfg *esw_cfg;
3194         int count, rem, i, ret;
3195         u8 id, pci_func;
3196
3197         count   = size / sizeof(struct qlcnic_esw_func_cfg);
3198         rem     = size % sizeof(struct qlcnic_esw_func_cfg);
3199         if (rem)
3200                 return QL_STATUS_INVALID_PARAM;
3201
3202         esw_cfg = (struct qlcnic_esw_func_cfg *) buf;
3203         ret = validate_esw_config(adapter, esw_cfg, count);
3204         if (ret)
3205                 return ret;
3206
3207         for (i = 0; i < count; i++) {
3208                 pci_func = esw_cfg[i].pci_func;
3209                 id = adapter->npars[pci_func].phy_port;
3210                 ret = qlcnic_config_switch_port(adapter, id,
3211                                                 esw_cfg[i].host_vlan_tag,
3212                                                 esw_cfg[i].discard_tagged,
3213                                                 esw_cfg[i].promisc_mode,
3214                                                 esw_cfg[i].mac_learning,
3215                                                 esw_cfg[i].pci_func,
3216                                                 esw_cfg[i].vlan_id);
3217                 if (ret)
3218                         return ret;
3219         }
3220
3221         for (i = 0; i < count; i++) {
3222                 pci_func = esw_cfg[i].pci_func;
3223                 adapter->npars[pci_func].promisc_mode = esw_cfg[i].promisc_mode;
3224                 adapter->npars[pci_func].mac_learning = esw_cfg[i].mac_learning;
3225                 adapter->npars[pci_func].vlan_id = esw_cfg[i].vlan_id;
3226                 adapter->npars[pci_func].discard_tagged =
3227                                                 esw_cfg[i].discard_tagged;
3228                 adapter->npars[pci_func].host_vlan_tag =
3229                                                 esw_cfg[i].host_vlan_tag;
3230         }
3231
3232         return size;
3233 }
3234
3235 static ssize_t
3236 qlcnic_sysfs_read_esw_config(struct file *file, struct kobject *kobj,
3237         struct bin_attribute *attr, char *buf, loff_t offset, size_t size)
3238 {
3239         struct device *dev = container_of(kobj, struct device, kobj);
3240         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
3241         struct qlcnic_esw_func_cfg esw_cfg[QLCNIC_MAX_PCI_FUNC];
3242         int i;
3243
3244         if (size != sizeof(esw_cfg))
3245                 return QL_STATUS_INVALID_PARAM;
3246
3247         for (i = 0; i < QLCNIC_MAX_PCI_FUNC; i++) {
3248                 if (adapter->npars[i].type != QLCNIC_TYPE_NIC)
3249                         continue;
3250
3251                 esw_cfg[i].host_vlan_tag = adapter->npars[i].host_vlan_tag;
3252                 esw_cfg[i].promisc_mode = adapter->npars[i].promisc_mode;
3253                 esw_cfg[i].discard_tagged = adapter->npars[i].discard_tagged;
3254                 esw_cfg[i].vlan_id = adapter->npars[i].vlan_id;
3255                 esw_cfg[i].mac_learning = adapter->npars[i].mac_learning;
3256         }
3257         memcpy(buf, &esw_cfg, size);
3258
3259         return size;
3260 }
3261
3262 static int
3263 validate_npar_config(struct qlcnic_adapter *adapter,
3264                                 struct qlcnic_npar_func_cfg *np_cfg, int count)
3265 {
3266         u8 pci_func, i;
3267
3268         for (i = 0; i < count; i++) {
3269                 pci_func = np_cfg[i].pci_func;
3270                 if (pci_func >= QLCNIC_MAX_PCI_FUNC)
3271                         return QL_STATUS_INVALID_PARAM;
3272
3273                 if (adapter->npars[pci_func].type != QLCNIC_TYPE_NIC)
3274                         return QL_STATUS_INVALID_PARAM;
3275
3276                 if (!IS_VALID_BW(np_cfg[i].min_bw)
3277                                 || !IS_VALID_BW(np_cfg[i].max_bw)
3278                                 || !IS_VALID_RX_QUEUES(np_cfg[i].max_rx_queues)
3279                                 || !IS_VALID_TX_QUEUES(np_cfg[i].max_tx_queues))
3280                         return QL_STATUS_INVALID_PARAM;
3281         }
3282         return 0;
3283 }
3284
3285 static ssize_t
3286 qlcnic_sysfs_write_npar_config(struct file *file, struct kobject *kobj,
3287         struct bin_attribute *attr, char *buf, loff_t offset, size_t size)
3288 {
3289         struct device *dev = container_of(kobj, struct device, kobj);
3290         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
3291         struct qlcnic_info nic_info;
3292         struct qlcnic_npar_func_cfg *np_cfg;
3293         int i, count, rem, ret;
3294         u8 pci_func;
3295
3296         count   = size / sizeof(struct qlcnic_npar_func_cfg);
3297         rem     = size % sizeof(struct qlcnic_npar_func_cfg);
3298         if (rem)
3299                 return QL_STATUS_INVALID_PARAM;
3300
3301         np_cfg = (struct qlcnic_npar_func_cfg *) buf;
3302         ret = validate_npar_config(adapter, np_cfg, count);
3303         if (ret)
3304                 return ret;
3305
3306         for (i = 0; i < count ; i++) {
3307                 pci_func = np_cfg[i].pci_func;
3308                 ret = qlcnic_get_nic_info(adapter, &nic_info, pci_func);
3309                 if (ret)
3310                         return ret;
3311                 nic_info.pci_func = pci_func;
3312                 nic_info.min_tx_bw = np_cfg[i].min_bw;
3313                 nic_info.max_tx_bw = np_cfg[i].max_bw;
3314                 ret = qlcnic_set_nic_info(adapter, &nic_info);
3315                 if (ret)
3316                         return ret;
3317                 adapter->npars[i].min_bw = nic_info.min_tx_bw;
3318                 adapter->npars[i].max_bw = nic_info.max_tx_bw;
3319         }
3320
3321         return size;
3322
3323 }
3324 static ssize_t
3325 qlcnic_sysfs_read_npar_config(struct file *file, struct kobject *kobj,
3326         struct bin_attribute *attr, char *buf, loff_t offset, size_t size)
3327 {
3328         struct device *dev = container_of(kobj, struct device, kobj);
3329         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
3330         struct qlcnic_info nic_info;
3331         struct qlcnic_npar_func_cfg np_cfg[QLCNIC_MAX_PCI_FUNC];
3332         int i, ret;
3333
3334         if (size != sizeof(np_cfg))
3335                 return QL_STATUS_INVALID_PARAM;
3336
3337         for (i = 0; i < QLCNIC_MAX_PCI_FUNC ; i++) {
3338                 if (adapter->npars[i].type != QLCNIC_TYPE_NIC)
3339                         continue;
3340                 ret = qlcnic_get_nic_info(adapter, &nic_info, i);
3341                 if (ret)
3342                         return ret;
3343
3344                 np_cfg[i].pci_func = i;
3345                 np_cfg[i].op_mode = nic_info.op_mode;
3346                 np_cfg[i].port_num = nic_info.phys_port;
3347                 np_cfg[i].fw_capab = nic_info.capabilities;
3348                 np_cfg[i].min_bw = nic_info.min_tx_bw ;
3349                 np_cfg[i].max_bw = nic_info.max_tx_bw;
3350                 np_cfg[i].max_tx_queues = nic_info.max_tx_ques;
3351                 np_cfg[i].max_rx_queues = nic_info.max_rx_ques;
3352         }
3353         memcpy(buf, &np_cfg, size);
3354         return size;
3355 }
3356
3357 static ssize_t
3358 qlcnic_sysfs_read_pci_config(struct file *file, struct kobject *kobj,
3359         struct bin_attribute *attr, char *buf, loff_t offset, size_t size)
3360 {
3361         struct device *dev = container_of(kobj, struct device, kobj);
3362         struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
3363         struct qlcnic_pci_func_cfg pci_cfg[QLCNIC_MAX_PCI_FUNC];
3364         struct qlcnic_pci_info  pci_info[QLCNIC_MAX_PCI_FUNC];
3365         int i, ret;
3366
3367         if (size != sizeof(pci_cfg))
3368                 return QL_STATUS_INVALID_PARAM;
3369
3370         ret = qlcnic_get_pci_info(adapter, pci_info);
3371         if (ret)
3372                 return ret;
3373
3374         for (i = 0; i < QLCNIC_MAX_PCI_FUNC ; i++) {
3375                 pci_cfg[i].pci_func = pci_info[i].id;
3376                 pci_cfg[i].func_type = pci_info[i].type;
3377                 pci_cfg[i].port_num = pci_info[i].default_port;
3378                 pci_cfg[i].min_bw = pci_info[i].tx_min_bw;
3379                 pci_cfg[i].max_bw = pci_info[i].tx_max_bw;
3380                 memcpy(&pci_cfg[i].def_mac_addr, &pci_info[i].mac, ETH_ALEN);
3381         }
3382         memcpy(buf, &pci_cfg, size);
3383         return size;
3384
3385 }
3386 static struct bin_attribute bin_attr_npar_config = {
3387         .attr = {.name = "npar_config", .mode = (S_IRUGO | S_IWUSR)},
3388         .size = 0,
3389         .read = qlcnic_sysfs_read_npar_config,
3390         .write = qlcnic_sysfs_write_npar_config,
3391 };
3392
3393 static struct bin_attribute bin_attr_pci_config = {
3394         .attr = {.name = "pci_config", .mode = (S_IRUGO | S_IWUSR)},
3395         .size = 0,
3396         .read = qlcnic_sysfs_read_pci_config,
3397         .write = NULL,
3398 };
3399
3400 static struct bin_attribute bin_attr_esw_config = {
3401         .attr = {.name = "esw_config", .mode = (S_IRUGO | S_IWUSR)},
3402         .size = 0,
3403         .read = qlcnic_sysfs_read_esw_config,
3404         .write = qlcnic_sysfs_write_esw_config,
3405 };
3406
3407 static struct bin_attribute bin_attr_pm_config = {
3408         .attr = {.name = "pm_config", .mode = (S_IRUGO | S_IWUSR)},
3409         .size = 0,
3410         .read = qlcnic_sysfs_read_pm_config,
3411         .write = qlcnic_sysfs_write_pm_config,
3412 };
3413
3414 static void
3415 qlcnic_create_sysfs_entries(struct qlcnic_adapter *adapter)
3416 {
3417         struct device *dev = &adapter->pdev->dev;
3418
3419         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
3420                 if (device_create_file(dev, &dev_attr_bridged_mode))
3421                         dev_warn(dev,
3422                                 "failed to create bridged_mode sysfs entry\n");
3423 }
3424
3425 static void
3426 qlcnic_remove_sysfs_entries(struct qlcnic_adapter *adapter)
3427 {
3428         struct device *dev = &adapter->pdev->dev;
3429
3430         if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
3431                 device_remove_file(dev, &dev_attr_bridged_mode);
3432 }
3433
3434 static void
3435 qlcnic_create_diag_entries(struct qlcnic_adapter *adapter)
3436 {
3437         struct device *dev = &adapter->pdev->dev;
3438
3439         if (adapter->op_mode == QLCNIC_NON_PRIV_FUNC)
3440                 return;
3441         if (device_create_file(dev, &dev_attr_diag_mode))
3442                 dev_info(dev, "failed to create diag_mode sysfs entry\n");
3443         if (device_create_bin_file(dev, &bin_attr_crb))
3444                 dev_info(dev, "failed to create crb sysfs entry\n");
3445         if (device_create_bin_file(dev, &bin_attr_mem))
3446                 dev_info(dev, "failed to create mem sysfs entry\n");
3447         if (!(adapter->flags & QLCNIC_ESWITCH_ENABLED) ||
3448                         adapter->op_mode != QLCNIC_MGMT_FUNC)
3449                 return;
3450         if (device_create_bin_file(dev, &bin_attr_pci_config))
3451                 dev_info(dev, "failed to create pci config sysfs entry");
3452         if (device_create_bin_file(dev, &bin_attr_npar_config))
3453                 dev_info(dev, "failed to create npar config sysfs entry");
3454         if (device_create_bin_file(dev, &bin_attr_esw_config))
3455                 dev_info(dev, "failed to create esw config sysfs entry");
3456         if (device_create_bin_file(dev, &bin_attr_pm_config))
3457                 dev_info(dev, "failed to create pm config sysfs entry");
3458
3459 }
3460
3461 static void
3462 qlcnic_remove_diag_entries(struct qlcnic_adapter *adapter)
3463 {
3464         struct device *dev = &adapter->pdev->dev;
3465
3466         if (adapter->op_mode == QLCNIC_NON_PRIV_FUNC)
3467                 return;
3468         device_remove_file(dev, &dev_attr_diag_mode);
3469         device_remove_bin_file(dev, &bin_attr_crb);
3470         device_remove_bin_file(dev, &bin_attr_mem);
3471         if (!(adapter->flags & QLCNIC_ESWITCH_ENABLED) ||
3472                         adapter->op_mode != QLCNIC_MGMT_FUNC)
3473                 return;
3474         device_remove_bin_file(dev, &bin_attr_pci_config);
3475         device_remove_bin_file(dev, &bin_attr_npar_config);
3476         device_remove_bin_file(dev, &bin_attr_esw_config);
3477         device_remove_bin_file(dev, &bin_attr_pm_config);
3478 }
3479
3480 #ifdef CONFIG_INET
3481
3482 #define is_qlcnic_netdev(dev) (dev->netdev_ops == &qlcnic_netdev_ops)
3483
3484 static void
3485 qlcnic_config_indev_addr(struct net_device *dev, unsigned long event)
3486 {
3487         struct in_device *indev;
3488         struct qlcnic_adapter *adapter = netdev_priv(dev);
3489
3490         indev = in_dev_get(dev);
3491         if (!indev)
3492                 return;
3493
3494         for_ifa(indev) {
3495                 switch (event) {
3496                 case NETDEV_UP:
3497                         qlcnic_config_ipaddr(adapter,
3498                                         ifa->ifa_address, QLCNIC_IP_UP);
3499                         break;
3500                 case NETDEV_DOWN:
3501                         qlcnic_config_ipaddr(adapter,
3502                                         ifa->ifa_address, QLCNIC_IP_DOWN);
3503                         break;
3504                 default:
3505                         break;
3506                 }
3507         } endfor_ifa(indev);
3508
3509         in_dev_put(indev);
3510 }
3511
3512 static int qlcnic_netdev_event(struct notifier_block *this,
3513                                  unsigned long event, void *ptr)
3514 {
3515         struct qlcnic_adapter *adapter;
3516         struct net_device *dev = (struct net_device *)ptr;
3517
3518 recheck:
3519         if (dev == NULL)
3520                 goto done;
3521
3522         if (dev->priv_flags & IFF_802_1Q_VLAN) {
3523                 dev = vlan_dev_real_dev(dev);
3524                 goto recheck;
3525         }
3526
3527         if (!is_qlcnic_netdev(dev))
3528                 goto done;
3529
3530         adapter = netdev_priv(dev);
3531
3532         if (!adapter)
3533                 goto done;
3534
3535         if (!test_bit(__QLCNIC_DEV_UP, &adapter->state))
3536                 goto done;
3537
3538         qlcnic_config_indev_addr(dev, event);
3539 done:
3540         return NOTIFY_DONE;
3541 }
3542
3543 static int
3544 qlcnic_inetaddr_event(struct notifier_block *this,
3545                 unsigned long event, void *ptr)
3546 {
3547         struct qlcnic_adapter *adapter;
3548         struct net_device *dev;
3549
3550         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3551
3552         dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
3553
3554 recheck:
3555         if (dev == NULL || !netif_running(dev))
3556                 goto done;
3557
3558         if (dev->priv_flags & IFF_802_1Q_VLAN) {
3559                 dev = vlan_dev_real_dev(dev);
3560                 goto recheck;
3561         }
3562
3563         if (!is_qlcnic_netdev(dev))
3564                 goto done;
3565
3566         adapter = netdev_priv(dev);
3567
3568         if (!adapter)
3569                 goto done;
3570
3571         if (!test_bit(__QLCNIC_DEV_UP, &adapter->state))
3572                 goto done;
3573
3574         switch (event) {
3575         case NETDEV_UP:
3576                 qlcnic_config_ipaddr(adapter, ifa->ifa_address, QLCNIC_IP_UP);
3577                 break;
3578         case NETDEV_DOWN:
3579                 qlcnic_config_ipaddr(adapter, ifa->ifa_address, QLCNIC_IP_DOWN);
3580                 break;
3581         default:
3582                 break;
3583         }
3584
3585 done:
3586         return NOTIFY_DONE;
3587 }
3588
3589 static struct notifier_block    qlcnic_netdev_cb = {
3590         .notifier_call = qlcnic_netdev_event,
3591 };
3592
3593 static struct notifier_block qlcnic_inetaddr_cb = {
3594         .notifier_call = qlcnic_inetaddr_event,
3595 };
3596 #else
3597 static void
3598 qlcnic_config_indev_addr(struct net_device *dev, unsigned long event)
3599 { }
3600 #endif
3601 static struct pci_error_handlers qlcnic_err_handler = {
3602         .error_detected = qlcnic_io_error_detected,
3603         .slot_reset = qlcnic_io_slot_reset,
3604         .resume = qlcnic_io_resume,
3605 };
3606
3607 static struct pci_driver qlcnic_driver = {
3608         .name = qlcnic_driver_name,
3609         .id_table = qlcnic_pci_tbl,
3610         .probe = qlcnic_probe,
3611         .remove = __devexit_p(qlcnic_remove),
3612 #ifdef CONFIG_PM
3613         .suspend = qlcnic_suspend,
3614         .resume = qlcnic_resume,
3615 #endif
3616         .shutdown = qlcnic_shutdown,
3617         .err_handler = &qlcnic_err_handler
3618
3619 };
3620
3621 static int __init qlcnic_init_module(void)
3622 {
3623         int ret;
3624
3625         printk(KERN_INFO "%s\n", qlcnic_driver_string);
3626
3627 #ifdef CONFIG_INET
3628         register_netdevice_notifier(&qlcnic_netdev_cb);
3629         register_inetaddr_notifier(&qlcnic_inetaddr_cb);
3630 #endif
3631
3632         ret = pci_register_driver(&qlcnic_driver);
3633         if (ret) {
3634 #ifdef CONFIG_INET
3635                 unregister_inetaddr_notifier(&qlcnic_inetaddr_cb);
3636                 unregister_netdevice_notifier(&qlcnic_netdev_cb);
3637 #endif
3638         }
3639
3640         return ret;
3641 }
3642
3643 module_init(qlcnic_init_module);
3644
3645 static void __exit qlcnic_exit_module(void)
3646 {
3647
3648         pci_unregister_driver(&qlcnic_driver);
3649
3650 #ifdef CONFIG_INET
3651         unregister_inetaddr_notifier(&qlcnic_inetaddr_cb);
3652         unregister_netdevice_notifier(&qlcnic_netdev_cb);
3653 #endif
3654 }
3655
3656 module_exit(qlcnic_exit_module);