drivers/scsi/qla4xxx/ql4_init.c

   1 /*
   2  * QLogic iSCSI HBA Driver
   3  * Copyright (c)  2003-2010 QLogic Corporation
   4  *
   5  * See LICENSE.qla4xxx for copyright and licensing details.
   6  */
   7
   8 #include <scsi/iscsi_if.h>
   9 #include "ql4_def.h"
  10 #include "ql4_glbl.h"
  11 #include "ql4_dbg.h"
  12 #include "ql4_inline.h"
  13
  14 static struct ddb_entry *qla4xxx_alloc_ddb(struct scsi_qla_host *ha,
  15                                            uint32_t fw_ddb_index);
  16
  17 static void ql4xxx_set_mac_number(struct scsi_qla_host *ha)
  18 {
  19         uint32_t value;
  20         uint8_t func_number;
  21         unsigned long flags;
  22
  23         /* Get the function number */
  24         spin_lock_irqsave(&ha->hardware_lock, flags);
  25         value = readw(&ha->reg->ctrl_status);
  26         spin_unlock_irqrestore(&ha->hardware_lock, flags);
  27
  28         func_number = (uint8_t) ((value >> 4) & 0x30);
  29         switch (value & ISP_CONTROL_FN_MASK) {
  30         case ISP_CONTROL_FN0_SCSI:
  31                 ha->mac_index = 1;
  32                 break;
  33         case ISP_CONTROL_FN1_SCSI:
  34                 ha->mac_index = 3;
  35                 break;
  36         default:
  37                 DEBUG2(printk("scsi%ld: %s: Invalid function number, "
  38                               "ispControlStatus = 0x%x\n", ha->host_no,
  39                               __func__, value));
  40                 break;
  41         }
  42         DEBUG2(printk("scsi%ld: %s: mac_index %d.\n", ha->host_no, __func__,
  43                       ha->mac_index));
  44 }
  45
  46 /**
  47  * qla4xxx_free_ddb - deallocate ddb
  48  * @ha: pointer to host adapter structure.
  49  * @ddb_entry: pointer to device database entry
  50  *
  51  * This routine deallocates and unlinks the specified ddb_entry from the
  52  * adapter's
  53  **/
  54 void qla4xxx_free_ddb(struct scsi_qla_host *ha,
  55     struct ddb_entry *ddb_entry)
  56 {
  57         /* Remove device entry from list */
  58         list_del_init(&ddb_entry->list);
  59
  60         /* Remove device pointer from index mapping arrays */
  61         ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] =
  62                 (struct ddb_entry *) INVALID_ENTRY;
  63         ha->tot_ddbs--;
  64
  65         /* Free memory and scsi-ml struct for device entry */
  66         qla4xxx_destroy_sess(ddb_entry);
  67 }
  68
  69 /**
  70  * qla4xxx_free_ddb_list - deallocate all ddbs
  71  * @ha: pointer to host adapter structure.
  72  *
  73  * This routine deallocates and removes all devices on the sppecified adapter.
  74  **/
  75 void qla4xxx_free_ddb_list(struct scsi_qla_host *ha)
  76 {
  77         struct list_head *ptr;
  78         struct ddb_entry *ddb_entry;
  79
  80         while (!list_empty(&ha->ddb_list)) {
  81                 ptr = ha->ddb_list.next;
  82                 /* Free memory for device entry and remove */
  83                 ddb_entry = list_entry(ptr, struct ddb_entry, list);
  84                 qla4xxx_free_ddb(ha, ddb_entry);
  85         }
  86 }
  87
  88 /**
  89  * qla4xxx_init_response_q_entries() - Initializes response queue entries.
  90  * @ha: HA context
  91  *
  92  * Beginning of request ring has initialization control block already built
  93  * by nvram config routine.
  94  **/
  95 static void qla4xxx_init_response_q_entries(struct scsi_qla_host *ha)
  96 {
  97         uint16_t cnt;
  98         struct response *pkt;
  99
 100         pkt = (struct response *)ha->response_ptr;
 101         for (cnt = 0; cnt < RESPONSE_QUEUE_DEPTH; cnt++) {
 102                 pkt->signature = RESPONSE_PROCESSED;
 103                 pkt++;
 104         }
 105 }
 106
 107 /**
 108  * qla4xxx_init_rings - initialize hw queues
 109  * @ha: pointer to host adapter structure.
 110  *
 111  * This routine initializes the internal queues for the specified adapter.
 112  * The QLA4010 requires us to restart the queues at index 0.
 113  * The QLA4000 doesn't care, so just default to QLA4010's requirement.
 114  **/
 115 int qla4xxx_init_rings(struct scsi_qla_host *ha)
 116 {
 117         unsigned long flags = 0;
 118
 119         /* Initialize request queue. */
 120         spin_lock_irqsave(&ha->hardware_lock, flags);
 121         ha->request_out = 0;
 122         ha->request_in = 0;
 123         ha->request_ptr = &ha->request_ring[ha->request_in];
 124         ha->req_q_count = REQUEST_QUEUE_DEPTH;
 125
 126         /* Initialize response queue. */
 127         ha->response_in = 0;
 128         ha->response_out = 0;
 129         ha->response_ptr = &ha->response_ring[ha->response_out];
 130
 131         if (is_qla8022(ha)) {
 132                 writel(0,
 133                     (unsigned long  __iomem *)&ha->qla4_8xxx_reg->req_q_out);
 134                 writel(0,
 135                     (unsigned long  __iomem *)&ha->qla4_8xxx_reg->rsp_q_in);
 136                 writel(0,
 137                     (unsigned long  __iomem *)&ha->qla4_8xxx_reg->rsp_q_out);
 138         } else {
 139                 /*
 140                  * Initialize DMA Shadow registers.  The firmware is really
 141                  * supposed to take care of this, but on some uniprocessor
 142                  * systems, the shadow registers aren't cleared-- causing
 143                  * the interrupt_handler to think there are responses to be
 144                  * processed when there aren't.
 145                  */
 146                 ha->shadow_regs->req_q_out = __constant_cpu_to_le32(0);
 147                 ha->shadow_regs->rsp_q_in = __constant_cpu_to_le32(0);
 148                 wmb();
 149
 150                 writel(0, &ha->reg->req_q_in);
 151                 writel(0, &ha->reg->rsp_q_out);
 152                 readl(&ha->reg->rsp_q_out);
 153         }
 154
 155         qla4xxx_init_response_q_entries(ha);
 156
 157         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 158
 159         return QLA_SUCCESS;
 160 }
 161
 162 /**
 163  * qla4xxx_get_sys_info - validate adapter MAC address(es)
 164  * @ha: pointer to host adapter structure.
 165  *
 166  **/
 167 int qla4xxx_get_sys_info(struct scsi_qla_host *ha)
 168 {
 169         struct flash_sys_info *sys_info;
 170         dma_addr_t sys_info_dma;
 171         int status = QLA_ERROR;
 172
 173         sys_info = dma_alloc_coherent(&ha->pdev->dev, sizeof(*sys_info),
 174                                       &sys_info_dma, GFP_KERNEL);
 175         if (sys_info == NULL) {
 176                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
 177                               ha->host_no, __func__));
 178
 179                 goto exit_get_sys_info_no_free;
 180         }
 181         memset(sys_info, 0, sizeof(*sys_info));
 182
 183         /* Get flash sys info */
 184         if (qla4xxx_get_flash(ha, sys_info_dma, FLASH_OFFSET_SYS_INFO,
 185                               sizeof(*sys_info)) != QLA_SUCCESS) {
 186                 DEBUG2(printk("scsi%ld: %s: get_flash FLASH_OFFSET_SYS_INFO "
 187                               "failed\n", ha->host_no, __func__));
 188
 189                 goto exit_get_sys_info;
 190         }
 191
 192         /* Save M.A.C. address & serial_number */
 193         memcpy(ha->my_mac, &sys_info->physAddr[0].address[0],
 194                min(sizeof(ha->my_mac),
 195                    sizeof(sys_info->physAddr[0].address)));
 196         memcpy(ha->serial_number, &sys_info->acSerialNumber,
 197                min(sizeof(ha->serial_number),
 198                    sizeof(sys_info->acSerialNumber)));
 199
 200         status = QLA_SUCCESS;
 201
 202 exit_get_sys_info:
 203         dma_free_coherent(&ha->pdev->dev, sizeof(*sys_info), sys_info,
 204                           sys_info_dma);
 205
 206 exit_get_sys_info_no_free:
 207         return status;
 208 }
 209
 210 /**
 211  * qla4xxx_init_local_data - initialize adapter specific local data
 212  * @ha: pointer to host adapter structure.
 213  *
 214  **/
 215 static int qla4xxx_init_local_data(struct scsi_qla_host *ha)
 216 {
 217         /* Initialize aen queue */
 218         ha->aen_q_count = MAX_AEN_ENTRIES;
 219
 220         return qla4xxx_get_firmware_status(ha);
 221 }
 222
 223 static uint8_t
 224 qla4xxx_wait_for_ip_config(struct scsi_qla_host *ha)
 225 {
 226         uint8_t ipv4_wait = 0;
 227         uint8_t ipv6_wait = 0;
 228         int8_t ip_address[IPv6_ADDR_LEN] = {0} ;
 229
 230         /* If both IPv4 & IPv6 are enabled, possibly only one
 231          * IP address may be acquired, so check to see if we
 232          * need to wait for another */
 233         if (is_ipv4_enabled(ha) && is_ipv6_enabled(ha)) {
 234                 if (((ha->addl_fw_state & FW_ADDSTATE_DHCPv4_ENABLED) != 0) &&
 235                     ((ha->addl_fw_state &
 236                                     FW_ADDSTATE_DHCPv4_LEASE_ACQUIRED) == 0)) {
 237                         ipv4_wait = 1;
 238                 }
 239                 if (((ha->ipv6_addl_options &
 240                             IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) != 0) &&
 241                     ((ha->ipv6_link_local_state == IP_ADDRSTATE_ACQUIRING) ||
 242                      (ha->ipv6_addr0_state == IP_ADDRSTATE_ACQUIRING) ||
 243                      (ha->ipv6_addr1_state == IP_ADDRSTATE_ACQUIRING))) {
 244
 245                         ipv6_wait = 1;
 246
 247                         if ((ha->ipv6_link_local_state ==
 248                                                      IP_ADDRSTATE_PREFERRED) ||
 249                             (ha->ipv6_addr0_state == IP_ADDRSTATE_PREFERRED) ||
 250                             (ha->ipv6_addr1_state == IP_ADDRSTATE_PREFERRED)) {
 251                                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
 252                                               "Preferred IP configured."
 253                                               " Don't wait!\n", ha->host_no,
 254                                               __func__));
 255                                 ipv6_wait = 0;
 256                         }
 257                         if (memcmp(&ha->ipv6_default_router_addr, ip_address,
 258                                 IPv6_ADDR_LEN) == 0) {
 259                                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
 260                                               "No Router configured. "
 261                                               "Don't wait!\n", ha->host_no,
 262                                               __func__));
 263                                 ipv6_wait = 0;
 264                         }
 265                         if ((ha->ipv6_default_router_state ==
 266                                                 IPV6_RTRSTATE_MANUAL) &&
 267                             (ha->ipv6_link_local_state ==
 268                                                 IP_ADDRSTATE_TENTATIVE) &&
 269                             (memcmp(&ha->ipv6_link_local_addr,
 270                                     &ha->ipv6_default_router_addr, 4) == 0)) {
 271                                 DEBUG2(printk("scsi%ld: %s: LinkLocal Router & "
 272                                         "IP configured. Don't wait!\n",
 273                                         ha->host_no, __func__));
 274                                 ipv6_wait = 0;
 275                         }
 276                 }
 277                 if (ipv4_wait || ipv6_wait) {
 278                         DEBUG2(printk("scsi%ld: %s: Wait for additional "
 279                                       "IP(s) \"", ha->host_no, __func__));
 280                         if (ipv4_wait)
 281                                 DEBUG2(printk("IPv4 "));
 282                         if (ha->ipv6_link_local_state == IP_ADDRSTATE_ACQUIRING)
 283                                 DEBUG2(printk("IPv6LinkLocal "));
 284                         if (ha->ipv6_addr0_state == IP_ADDRSTATE_ACQUIRING)
 285                                 DEBUG2(printk("IPv6Addr0 "));
 286                         if (ha->ipv6_addr1_state == IP_ADDRSTATE_ACQUIRING)
 287                                 DEBUG2(printk("IPv6Addr1 "));
 288                         DEBUG2(printk("\"\n"));
 289                 }
 290         }
 291
 292         return ipv4_wait|ipv6_wait;
 293 }
 294
 295 static int qla4xxx_fw_ready(struct scsi_qla_host *ha)
 296 {
 297         uint32_t timeout_count;
 298         int ready = 0;
 299
 300         DEBUG2(ql4_printk(KERN_INFO, ha, "Waiting for Firmware Ready..\n"));
 301         for (timeout_count = ADAPTER_INIT_TOV; timeout_count > 0;
 302              timeout_count--) {
 303                 if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
 304                         qla4xxx_get_dhcp_ip_address(ha);
 305
 306                 /* Get firmware state. */
 307                 if (qla4xxx_get_firmware_state(ha) != QLA_SUCCESS) {
 308                         DEBUG2(printk("scsi%ld: %s: unable to get firmware "
 309                                       "state\n", ha->host_no, __func__));
 310                         break;
 311                 }
 312
 313                 if (ha->firmware_state & FW_STATE_ERROR) {
 314                         DEBUG2(printk("scsi%ld: %s: an unrecoverable error has"
 315                                       " occurred\n", ha->host_no, __func__));
 316                         break;
 317
 318                 }
 319                 if (ha->firmware_state & FW_STATE_CONFIG_WAIT) {
 320                         /*
 321                          * The firmware has not yet been issued an Initialize
 322                          * Firmware command, so issue it now.
 323                          */
 324                         if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR)
 325                                 break;
 326
 327                         /* Go back and test for ready state - no wait. */
 328                         continue;
 329                 }
 330
 331                 if (ha->firmware_state & FW_STATE_WAIT_AUTOCONNECT) {
 332                         DEBUG2(printk(KERN_INFO "scsi%ld: %s: fwstate:"
 333                                       "AUTOCONNECT in progress\n",
 334                                       ha->host_no, __func__));
 335                 }
 336
 337                 if (ha->firmware_state & FW_STATE_CONFIGURING_IP) {
 338                         DEBUG2(printk(KERN_INFO "scsi%ld: %s: fwstate:"
 339                                       " CONFIGURING IP\n",
 340                                       ha->host_no, __func__));
 341                         /*
 342                          * Check for link state after 15 secs and if link is
 343                          * still DOWN then, cable is unplugged. Ignore "DHCP
 344                          * in Progress/CONFIGURING IP" bit to check if firmware
 345                          * is in ready state or not after 15 secs.
 346                          * This is applicable for both 2.x & 3.x firmware
 347                          */
 348                         if (timeout_count <= (ADAPTER_INIT_TOV - 15)) {
 349                                 if (ha->addl_fw_state & FW_ADDSTATE_LINK_UP) {
 350                                         DEBUG2(printk(KERN_INFO "scsi%ld: %s:"
 351                                                   " LINK UP (Cable plugged)\n",
 352                                                   ha->host_no, __func__));
 353                                 } else if (ha->firmware_state &
 354                                           (FW_STATE_CONFIGURING_IP |
 355                                                              FW_STATE_READY)) {
 356                                         DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
 357                                                 "LINK DOWN (Cable unplugged)\n",
 358                                                 ha->host_no, __func__));
 359                                         ha->firmware_state = FW_STATE_READY;
 360                                 }
 361                         }
 362                 }
 363
 364                 if (ha->firmware_state == FW_STATE_READY) {
 365                         /* If DHCP IP Addr is available, retrieve it now. */
 366                         if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR,
 367                                                                 &ha->dpc_flags))
 368                                 qla4xxx_get_dhcp_ip_address(ha);
 369
 370                         if (!qla4xxx_wait_for_ip_config(ha) ||
 371                                                         timeout_count == 1) {
 372                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 373                                     "Firmware Ready..\n"));
 374                                 /* The firmware is ready to process SCSI
 375                                    commands. */
 376                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 377                                         "scsi%ld: %s: MEDIA TYPE"
 378                                         " - %s\n", ha->host_no,
 379                                         __func__, (ha->addl_fw_state &
 380                                         FW_ADDSTATE_OPTICAL_MEDIA)
 381                                         != 0 ? "OPTICAL" : "COPPER"));
 382                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 383                                         "scsi%ld: %s: DHCPv4 STATE"
 384                                         " Enabled %s\n", ha->host_no,
 385                                          __func__, (ha->addl_fw_state &
 386                                          FW_ADDSTATE_DHCPv4_ENABLED) != 0 ?
 387                                         "YES" : "NO"));
 388                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 389                                         "scsi%ld: %s: LINK %s\n",
 390                                         ha->host_no, __func__,
 391                                         (ha->addl_fw_state &
 392                                          FW_ADDSTATE_LINK_UP) != 0 ?
 393                                         "UP" : "DOWN"));
 394                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 395                                         "scsi%ld: %s: iSNS Service "
 396                                         "Started %s\n",
 397                                         ha->host_no, __func__,
 398                                         (ha->addl_fw_state &
 399                                          FW_ADDSTATE_ISNS_SVC_ENABLED) != 0 ?
 400                                         "YES" : "NO"));
 401
 402                                 ready = 1;
 403                                 break;
 404                         }
 405                 }
 406                 DEBUG2(printk("scsi%ld: %s: waiting on fw, state=%x:%x - "
 407                               "seconds expired= %d\n", ha->host_no, __func__,
 408                               ha->firmware_state, ha->addl_fw_state,
 409                               timeout_count));
 410                 if (is_qla4032(ha) &&
 411                         !(ha->addl_fw_state & FW_ADDSTATE_LINK_UP) &&
 412                         (timeout_count < ADAPTER_INIT_TOV - 5)) {
 413                         break;
 414                 }
 415
 416                 msleep(1000);
 417         }                       /* end of for */
 418
 419         if (timeout_count <= 0)
 420                 DEBUG2(printk("scsi%ld: %s: FW Initialization timed out!\n",
 421                               ha->host_no, __func__));
 422
 423         if (ha->firmware_state & FW_STATE_CONFIGURING_IP) {
 424                 DEBUG2(printk("scsi%ld: %s: FW initialized, but is reporting "
 425                               "it's waiting to configure an IP address\n",
 426                                ha->host_no, __func__));
 427                 ready = 1;
 428         } else if (ha->firmware_state & FW_STATE_WAIT_AUTOCONNECT) {
 429                 DEBUG2(printk("scsi%ld: %s: FW initialized, but "
 430                               "auto-discovery still in process\n",
 431                                ha->host_no, __func__));
 432                 ready = 1;
 433         }
 434
 435         return ready;
 436 }
 437
 438 /**
 439  * qla4xxx_init_firmware - initializes the firmware.
 440  * @ha: pointer to host adapter structure.
 441  *
 442  **/
 443 static int qla4xxx_init_firmware(struct scsi_qla_host *ha)
 444 {
 445         int status = QLA_ERROR;
 446
 447         if (is_aer_supported(ha) &&
 448             test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
 449                 return status;
 450
 451         /* For 82xx, stop firmware before initializing because if BIOS
 452          * has previously initialized firmware, then driver's initialize
 453          * firmware will fail. */
 454         if (is_qla8022(ha))
 455                 qla4_8xxx_stop_firmware(ha);
 456
 457         ql4_printk(KERN_INFO, ha, "Initializing firmware..\n");
 458         if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR) {
 459                 DEBUG2(printk("scsi%ld: %s: Failed to initialize firmware "
 460                               "control block\n", ha->host_no, __func__));
 461                 return status;
 462         }
 463         if (!qla4xxx_fw_ready(ha))
 464                 return status;
 465
 466         return qla4xxx_get_firmware_status(ha);
 467 }
 468
 469 static struct ddb_entry* qla4xxx_get_ddb_entry(struct scsi_qla_host *ha,
 470                                                 uint32_t fw_ddb_index,
 471                                                 uint32_t *new_tgt)
 472 {
 473         struct dev_db_entry *fw_ddb_entry = NULL;
 474         dma_addr_t fw_ddb_entry_dma;
 475         struct ddb_entry *ddb_entry = NULL;
 476         int found = 0;
 477         uint32_t device_state;
 478
 479         *new_tgt = 0;
 480         /* Make sure the dma buffer is valid */
 481         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
 482                                           sizeof(*fw_ddb_entry),
 483                                           &fw_ddb_entry_dma, GFP_KERNEL);
 484         if (fw_ddb_entry == NULL) {
 485                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
 486                               ha->host_no, __func__));
 487                 goto exit_get_ddb_entry_no_free;
 488         }
 489
 490         if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
 491                                     fw_ddb_entry_dma, NULL, NULL,
 492                                     &device_state, NULL, NULL, NULL) ==
 493                                     QLA_ERROR) {
 494                 DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
 495                               "fw_ddb_index %d\n", ha->host_no, __func__,
 496                               fw_ddb_index));
 497                 goto exit_get_ddb_entry;
 498         }
 499
 500         /* Allocate DDB if not already allocated. */
 501         DEBUG2(printk("scsi%ld: %s: Looking for ddb[%d]\n", ha->host_no,
 502                       __func__, fw_ddb_index));
 503         list_for_each_entry(ddb_entry, &ha->ddb_list, list) {
 504                 if ((memcmp(ddb_entry->iscsi_name, fw_ddb_entry->iscsi_name,
 505                            ISCSI_NAME_SIZE) == 0) &&
 506                         (ddb_entry->tpgt ==
 507                                 le32_to_cpu(fw_ddb_entry->tgt_portal_grp)) &&
 508                         (memcmp(ddb_entry->isid, fw_ddb_entry->isid,
 509                                 sizeof(ddb_entry->isid)) == 0)) {
 510                         found++;
 511                         break;
 512                 }
 513         }
 514
 515         /* if not found allocate new ddb */
 516         if (!found) {
 517                 DEBUG2(printk("scsi%ld: %s: ddb[%d] not found - allocating "
 518                               "new ddb\n", ha->host_no, __func__,
 519                               fw_ddb_index));
 520                 *new_tgt = 1;
 521                 ddb_entry = qla4xxx_alloc_ddb(ha, fw_ddb_index);
 522         }
 523
 524 exit_get_ddb_entry:
 525         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
 526                           fw_ddb_entry_dma);
 527
 528 exit_get_ddb_entry_no_free:
 529         return ddb_entry;
 530 }
 531
 532 /**
 533  * qla4xxx_update_ddb_entry - update driver's internal ddb
 534  * @ha: pointer to host adapter structure.
 535  * @ddb_entry: pointer to device database structure to be filled
 536  * @fw_ddb_index: index of the ddb entry in fw ddb table
 537  *
 538  * This routine updates the driver's internal device database entry
 539  * with information retrieved from the firmware's device database
 540  * entry for the specified device. The ddb_entry->fw_ddb_index field
 541  * must be initialized prior to calling this routine
 542  *
 543  **/
 544 static int qla4xxx_update_ddb_entry(struct scsi_qla_host *ha,
 545                                     struct ddb_entry *ddb_entry,
 546                                     uint32_t fw_ddb_index)
 547 {
 548         struct dev_db_entry *fw_ddb_entry = NULL;
 549         dma_addr_t fw_ddb_entry_dma;
 550         int status = QLA_ERROR;
 551         uint32_t conn_err;
 552
 553         if (ddb_entry == NULL) {
 554                 DEBUG2(printk("scsi%ld: %s: ddb_entry is NULL\n", ha->host_no,
 555                               __func__));
 556
 557                 goto exit_update_ddb_no_free;
 558         }
 559
 560         /* Make sure the dma buffer is valid */
 561         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
 562                                           sizeof(*fw_ddb_entry),
 563                                           &fw_ddb_entry_dma, GFP_KERNEL);
 564         if (fw_ddb_entry == NULL) {
 565                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
 566                               ha->host_no, __func__));
 567
 568                 goto exit_update_ddb_no_free;
 569         }
 570
 571         if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
 572                                     fw_ddb_entry_dma, NULL, NULL,
 573                                     &ddb_entry->fw_ddb_device_state, &conn_err,
 574                                     &ddb_entry->tcp_source_port_num,
 575                                     &ddb_entry->connection_id) ==
 576                                     QLA_ERROR) {
 577                 DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
 578                               "fw_ddb_index %d\n", ha->host_no, __func__,
 579                               fw_ddb_index));
 580
 581                 goto exit_update_ddb;
 582         }
 583
 584         status = QLA_SUCCESS;
 585         ddb_entry->options = le16_to_cpu(fw_ddb_entry->options);
 586         ddb_entry->target_session_id = le16_to_cpu(fw_ddb_entry->tsid);
 587         ddb_entry->task_mgmt_timeout =
 588                 le16_to_cpu(fw_ddb_entry->def_timeout);
 589         ddb_entry->CmdSn = 0;
 590         ddb_entry->exe_throttle = le16_to_cpu(fw_ddb_entry->exec_throttle);
 591         ddb_entry->default_relogin_timeout =
 592                 le16_to_cpu(fw_ddb_entry->def_timeout);
 593         ddb_entry->default_time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
 594
 595         /* Update index in case it changed */
 596         ddb_entry->fw_ddb_index = fw_ddb_index;
 597         ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
 598
 599         ddb_entry->port = le16_to_cpu(fw_ddb_entry->port);
 600         ddb_entry->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
 601         memcpy(ddb_entry->isid, fw_ddb_entry->isid, sizeof(ddb_entry->isid));
 602
 603         memcpy(&ddb_entry->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
 604                min(sizeof(ddb_entry->iscsi_name),
 605                    sizeof(fw_ddb_entry->iscsi_name)));
 606         memcpy(&ddb_entry->iscsi_alias[0], &fw_ddb_entry->iscsi_alias[0],
 607                min(sizeof(ddb_entry->iscsi_alias),
 608                    sizeof(fw_ddb_entry->iscsi_alias)));
 609         memcpy(&ddb_entry->ip_addr[0], &fw_ddb_entry->ip_addr[0],
 610                min(sizeof(ddb_entry->ip_addr), sizeof(fw_ddb_entry->ip_addr)));
 611
 612         ddb_entry->iscsi_max_burst_len = fw_ddb_entry->iscsi_max_burst_len;
 613         ddb_entry->iscsi_max_outsnd_r2t = fw_ddb_entry->iscsi_max_outsnd_r2t;
 614         ddb_entry->iscsi_first_burst_len = fw_ddb_entry->iscsi_first_burst_len;
 615         ddb_entry->iscsi_max_rcv_data_seg_len =
 616                                 fw_ddb_entry->iscsi_max_rcv_data_seg_len;
 617         ddb_entry->iscsi_max_snd_data_seg_len =
 618                                 fw_ddb_entry->iscsi_max_snd_data_seg_len;
 619
 620         if (ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
 621                 memcpy(&ddb_entry->remote_ipv6_addr,
 622                         fw_ddb_entry->ip_addr,
 623                         min(sizeof(ddb_entry->remote_ipv6_addr),
 624                         sizeof(fw_ddb_entry->ip_addr)));
 625                 memcpy(&ddb_entry->link_local_ipv6_addr,
 626                         fw_ddb_entry->link_local_ipv6_addr,
 627                         min(sizeof(ddb_entry->link_local_ipv6_addr),
 628                         sizeof(fw_ddb_entry->link_local_ipv6_addr)));
 629
 630                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: DDB[%d] State %04x"
 631                                         " ConnErr %08x IP %pI6 "
 632                                         ":%04d \"%s\"\n",
 633                                         __func__, fw_ddb_index,
 634                                         ddb_entry->fw_ddb_device_state,
 635                                         conn_err, fw_ddb_entry->ip_addr,
 636                                         le16_to_cpu(fw_ddb_entry->port),
 637                                         fw_ddb_entry->iscsi_name));
 638         } else
 639                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: DDB[%d] State %04x"
 640                                         " ConnErr %08x IP %pI4 "
 641                                         ":%04d \"%s\"\n",
 642                                         __func__, fw_ddb_index,
 643                                         ddb_entry->fw_ddb_device_state,
 644                                         conn_err, fw_ddb_entry->ip_addr,
 645                                         le16_to_cpu(fw_ddb_entry->port),
 646                                         fw_ddb_entry->iscsi_name));
 647 exit_update_ddb:
 648         if (fw_ddb_entry)
 649                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
 650                                   fw_ddb_entry, fw_ddb_entry_dma);
 651
 652 exit_update_ddb_no_free:
 653         return status;
 654 }
 655
 656 /**
 657  * qla4xxx_alloc_ddb - allocate device database entry
 658  * @ha: Pointer to host adapter structure.
 659  * @fw_ddb_index: Firmware's device database index
 660  *
 661  * This routine allocates a ddb_entry, ititializes some values, and
 662  * inserts it into the ddb list.
 663  **/
 664 static struct ddb_entry * qla4xxx_alloc_ddb(struct scsi_qla_host *ha,
 665                                             uint32_t fw_ddb_index)
 666 {
 667         struct ddb_entry *ddb_entry;
 668
 669         DEBUG2(printk("scsi%ld: %s: fw_ddb_index [%d]\n", ha->host_no,
 670                       __func__, fw_ddb_index));
 671
 672         ddb_entry = qla4xxx_alloc_sess(ha);
 673         if (ddb_entry == NULL) {
 674                 DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
 675                               "to add fw_ddb_index [%d]\n",
 676                               ha->host_no, __func__, fw_ddb_index));
 677                 return ddb_entry;
 678         }
 679
 680         ddb_entry->fw_ddb_index = fw_ddb_index;
 681         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
 682         atomic_set(&ddb_entry->relogin_timer, 0);
 683         atomic_set(&ddb_entry->relogin_retry_count, 0);
 684         atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
 685         list_add_tail(&ddb_entry->list, &ha->ddb_list);
 686         ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
 687         ha->tot_ddbs++;
 688
 689         return ddb_entry;
 690 }
 691
 692 /**
 693  * qla4_is_relogin_allowed - Are we allowed to login?
 694  * @ha: Pointer to host adapter structure.
 695  * @conn_err: Last connection error associated with the ddb
 696  *
 697  * This routine tests the given connection error to determine if
 698  * we are allowed to login.
 699  **/
 700 int qla4_is_relogin_allowed(struct scsi_qla_host *ha, uint32_t conn_err)
 701 {
 702         uint32_t err_code, login_rsp_sts_class;
 703         int relogin = 1;
 704
 705         err_code = ((conn_err & 0x00ff0000) >> 16);
 706         login_rsp_sts_class = ((conn_err & 0x0000ff00) >> 8);
 707         if (err_code == 0x1c || err_code == 0x06) {
 708                 DEBUG2(ql4_printk(KERN_INFO, ha,
 709                     ": conn_err=0x%08x, send target completed"
 710                     " or access denied failure\n", conn_err));
 711                 relogin = 0;
 712         }
 713         if ((err_code == 0x08) && (login_rsp_sts_class == 0x02)) {
 714                 /* Login Response PDU returned an error.
 715                    Login Response Status in Error Code Detail
 716                    indicates login should not be retried.*/
 717                 DEBUG2(ql4_printk(KERN_INFO, ha,
 718                     ": conn_err=0x%08x, do not retry relogin\n",
 719                     conn_err));
 720                 relogin = 0;
 721         }
 722
 723         return relogin;
 724 }
 725
 726 /**
 727  * qla4xxx_configure_ddbs - builds driver ddb list
 728  * @ha: Pointer to host adapter structure.
 729  *
 730  * This routine searches for all valid firmware ddb entries and builds
 731  * an internal ddb list. Ddbs that are considered valid are those with
 732  * a device state of SESSION_ACTIVE.
 733  **/
 734 static int qla4xxx_build_ddb_list(struct scsi_qla_host *ha)
 735 {
 736         int status = QLA_ERROR;
 737         uint32_t fw_ddb_index = 0;
 738         uint32_t next_fw_ddb_index = 0;
 739         uint32_t ddb_state;
 740         uint32_t conn_err;
 741         struct ddb_entry *ddb_entry;
 742         struct dev_db_entry *fw_ddb_entry = NULL;
 743         dma_addr_t fw_ddb_entry_dma;
 744         uint32_t ipv6_device;
 745         uint32_t new_tgt;
 746
 747         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
 748                         &fw_ddb_entry_dma, GFP_KERNEL);
 749         if (fw_ddb_entry == NULL) {
 750                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: DMA alloc failed\n",
 751                                 __func__));
 752
 753                 goto exit_build_ddb_list_no_free;
 754         }
 755
 756         ql4_printk(KERN_INFO, ha, "Initializing DDBs ...\n");
 757         for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES;
 758              fw_ddb_index = next_fw_ddb_index) {
 759                 /* First, let's see if a device exists here */
 760                 if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
 761                                             0, NULL, &next_fw_ddb_index,
 762                                             &ddb_state, &conn_err,
 763                                             NULL, NULL) ==
 764                                             QLA_ERROR) {
 765                         DEBUG2(printk("scsi%ld: %s: get_ddb_entry, "
 766                                       "fw_ddb_index %d failed", ha->host_no,
 767                                       __func__, fw_ddb_index));
 768                         goto exit_build_ddb_list;
 769                 }
 770
 771                 DEBUG2(printk("scsi%ld: %s: Getting DDB[%d] ddbstate=0x%x, "
 772                               "next_fw_ddb_index=%d.\n", ha->host_no, __func__,
 773                               fw_ddb_index, ddb_state, next_fw_ddb_index));
 774
 775                 /* Issue relogin, if necessary. */
 776                 if (ddb_state == DDB_DS_SESSION_FAILED ||
 777                     ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) {
 778                         /* Try and login to device */
 779                         DEBUG2(printk("scsi%ld: %s: Login to DDB[%d]\n",
 780                                       ha->host_no, __func__, fw_ddb_index));
 781                         ipv6_device = le16_to_cpu(fw_ddb_entry->options) &
 782                                         DDB_OPT_IPV6_DEVICE;
 783                         if (qla4_is_relogin_allowed(ha, conn_err) &&
 784                                         ((!ipv6_device &&
 785                                           *((uint32_t *)fw_ddb_entry->ip_addr))
 786                                          || ipv6_device)) {
 787                                 qla4xxx_set_ddb_entry(ha, fw_ddb_index, 0);
 788                                 if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index,
 789                                                         NULL, 0, NULL,
 790                                                         &next_fw_ddb_index,
 791                                                         &ddb_state, &conn_err,
 792                                                         NULL, NULL)
 793                                                 == QLA_ERROR) {
 794                                         DEBUG2(printk("scsi%ld: %s:"
 795                                                 "get_ddb_entry %d failed\n",
 796                                                 ha->host_no,
 797                                                 __func__, fw_ddb_index));
 798                                         goto exit_build_ddb_list;
 799                                 }
 800                         }
 801                 }
 802
 803                 if (ddb_state != DDB_DS_SESSION_ACTIVE)
 804                         goto next_one;
 805                 /*
 806                  * if fw_ddb with session active state found,
 807                  * add to ddb_list
 808                  */
 809                 DEBUG2(printk("scsi%ld: %s: DDB[%d] added to list\n",
 810                               ha->host_no, __func__, fw_ddb_index));
 811
 812                 /* Add DDB to internal our ddb list. */
 813                 ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index, &new_tgt);
 814                 if (ddb_entry == NULL) {
 815                         DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
 816                                       "for device at fw_ddb_index %d\n",
 817                                       ha->host_no, __func__, fw_ddb_index));
 818                         goto exit_build_ddb_list;
 819                 }
 820                 /* Fill in the device structure */
 821                 if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
 822                     QLA_ERROR) {
 823                         ha->fw_ddb_index_map[fw_ddb_index] =
 824                                 (struct ddb_entry *)INVALID_ENTRY;
 825
 826                         DEBUG2(printk("scsi%ld: %s: update_ddb_entry failed "
 827                                       "for fw_ddb_index %d.\n",
 828                                       ha->host_no, __func__, fw_ddb_index));
 829                         goto exit_build_ddb_list;
 830                 }
 831
 832 next_one:
 833                 /* We know we've reached the last device when
 834                  * next_fw_ddb_index is 0 */
 835                 if (next_fw_ddb_index == 0)
 836                         break;
 837         }
 838
 839         status = QLA_SUCCESS;
 840         ql4_printk(KERN_INFO, ha, "DDB list done..\n");
 841
 842 exit_build_ddb_list:
 843         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
 844                 fw_ddb_entry_dma);
 845
 846 exit_build_ddb_list_no_free:
 847         return status;
 848 }
 849
 850 struct qla4_relog_scan {
 851         int halt_wait;
 852         uint32_t conn_err;
 853         uint32_t fw_ddb_index;
 854         uint32_t next_fw_ddb_index;
 855         uint32_t fw_ddb_device_state;
 856 };
 857
 858 static int qla4_test_rdy(struct scsi_qla_host *ha, struct qla4_relog_scan *rs)
 859 {
 860         struct ddb_entry *ddb_entry;
 861
 862         if (qla4_is_relogin_allowed(ha, rs->conn_err)) {
 863                 /* We either have a device that is in
 864                  * the process of relogging in or a
 865                  * device that is waiting to be
 866                  * relogged in */
 867                 rs->halt_wait = 0;
 868
 869                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha,
 870                                                            rs->fw_ddb_index);
 871                 if (ddb_entry == NULL)
 872                         return QLA_ERROR;
 873
 874                 if (ddb_entry->dev_scan_wait_to_start_relogin != 0
 875                     && time_after_eq(jiffies,
 876                                      ddb_entry->
 877                                      dev_scan_wait_to_start_relogin))
 878                 {
 879                         ddb_entry->dev_scan_wait_to_start_relogin = 0;
 880                         qla4xxx_set_ddb_entry(ha, rs->fw_ddb_index, 0);
 881                 }
 882         }
 883         return QLA_SUCCESS;
 884 }
 885
 886 static int qla4_scan_for_relogin(struct scsi_qla_host *ha,
 887                                  struct qla4_relog_scan *rs)
 888 {
 889         int error;
 890
 891         /* scan for relogins
 892          * ----------------- */
 893         for (rs->fw_ddb_index = 0; rs->fw_ddb_index < MAX_DDB_ENTRIES;
 894              rs->fw_ddb_index = rs->next_fw_ddb_index) {
 895                 if (qla4xxx_get_fwddb_entry(ha, rs->fw_ddb_index, NULL, 0,
 896                                             NULL, &rs->next_fw_ddb_index,
 897                                             &rs->fw_ddb_device_state,
 898                                             &rs->conn_err, NULL, NULL)
 899                     == QLA_ERROR)
 900                         return QLA_ERROR;
 901
 902                 if (rs->fw_ddb_device_state == DDB_DS_LOGIN_IN_PROCESS)
 903                         rs->halt_wait = 0;
 904
 905                 if (rs->fw_ddb_device_state == DDB_DS_SESSION_FAILED ||
 906                     rs->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE) {
 907                         error = qla4_test_rdy(ha, rs);
 908                         if (error)
 909                                 return error;
 910                 }
 911
 912                 /* We know we've reached the last device when
 913                  * next_fw_ddb_index is 0 */
 914                 if (rs->next_fw_ddb_index == 0)
 915                         break;
 916         }
 917         return QLA_SUCCESS;
 918 }
 919
 920 /**
 921  * qla4xxx_devices_ready - wait for target devices to be logged in
 922  * @ha: pointer to adapter structure
 923  *
 924  * This routine waits up to ql4xdiscoverywait seconds
 925  * F/W database during driver load time.
 926  **/
 927 static int qla4xxx_devices_ready(struct scsi_qla_host *ha)
 928 {
 929         int error;
 930         unsigned long discovery_wtime;
 931         struct qla4_relog_scan rs;
 932
 933         discovery_wtime = jiffies + (ql4xdiscoverywait * HZ);
 934
 935         DEBUG(printk("Waiting (%d) for devices ...\n", ql4xdiscoverywait));
 936         do {
 937                 /* poll for AEN. */
 938                 qla4xxx_get_firmware_state(ha);
 939                 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) {
 940                         /* Set time-between-relogin timer */
 941                         qla4xxx_process_aen(ha, RELOGIN_DDB_CHANGED_AENS);
 942                 }
 943
 944                 /* if no relogins active or needed, halt discvery wait */
 945                 rs.halt_wait = 1;
 946
 947                 error = qla4_scan_for_relogin(ha, &rs);
 948
 949                 if (rs.halt_wait) {
 950                         DEBUG2(printk("scsi%ld: %s: Delay halted.  Devices "
 951                                       "Ready.\n", ha->host_no, __func__));
 952                         return QLA_SUCCESS;
 953                 }
 954
 955                 msleep(2000);
 956         } while (!time_after_eq(jiffies, discovery_wtime));
 957
 958         DEBUG3(qla4xxx_get_conn_event_log(ha));
 959
 960         return QLA_SUCCESS;
 961 }
 962
 963 static void qla4xxx_flush_AENS(struct scsi_qla_host *ha)
 964 {
 965         unsigned long wtime;
 966
 967         /* Flush the 0x8014 AEN from the firmware as a result of
 968          * Auto connect. We are basically doing get_firmware_ddb()
 969          * to determine whether we need to log back in or not.
 970          *  Trying to do a set ddb before we have processed 0x8014
 971          *  will result in another set_ddb() for the same ddb. In other
 972          *  words there will be stale entries in the aen_q.
 973          */
 974         wtime = jiffies + (2 * HZ);
 975         do {
 976                 if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS)
 977                         if (ha->firmware_state & (BIT_2 | BIT_0))
 978                                 return;
 979
 980                 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
 981                         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
 982
 983                 msleep(1000);
 984         } while (!time_after_eq(jiffies, wtime));
 985
 986 }
 987
 988 static int qla4xxx_initialize_ddb_list(struct scsi_qla_host *ha)
 989 {
 990         uint16_t fw_ddb_index;
 991         int status = QLA_SUCCESS;
 992
 993         /* free the ddb list if is not empty */
 994         if (!list_empty(&ha->ddb_list))
 995                 qla4xxx_free_ddb_list(ha);
 996
 997         for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES; fw_ddb_index++)
 998                 ha->fw_ddb_index_map[fw_ddb_index] =
 999                         (struct ddb_entry *)INVALID_ENTRY;
1000
1001         ha->tot_ddbs = 0;
1002
1003         qla4xxx_flush_AENS(ha);
1004
1005         /* Wait for an AEN */
1006         qla4xxx_devices_ready(ha);
1007
1008         /*
1009          * First perform device discovery for active
1010          * fw ddb indexes and build
1011          * ddb list.
1012          */
1013         if ((status = qla4xxx_build_ddb_list(ha)) == QLA_ERROR)
1014                 return status;
1015
1016         /*
1017          * Targets can come online after the inital discovery, so processing
1018          * the aens here will catch them.
1019          */
1020         if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
1021                 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
1022
1023         return status;
1024 }
1025
1026 /**
1027  * qla4xxx_reinitialize_ddb_list - update the driver ddb list
1028  * @ha: pointer to host adapter structure.
1029  *
1030  * This routine obtains device information from the F/W database after
1031  * firmware or adapter resets.  The device table is preserved.
1032  **/
1033 int qla4xxx_reinitialize_ddb_list(struct scsi_qla_host *ha)
1034 {
1035         int status = QLA_SUCCESS;
1036         struct ddb_entry *ddb_entry, *detemp;
1037
1038         /* Update the device information for all devices. */
1039         list_for_each_entry_safe(ddb_entry, detemp, &ha->ddb_list, list) {
1040                 qla4xxx_update_ddb_entry(ha, ddb_entry,
1041                                          ddb_entry->fw_ddb_index);
1042                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
1043                         atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
1044                         DEBUG2(printk ("scsi%ld: %s: ddb index [%d] marked "
1045                                        "ONLINE\n", ha->host_no, __func__,
1046                                        ddb_entry->fw_ddb_index));
1047                         iscsi_unblock_session(ddb_entry->sess);
1048                 } else if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
1049                         qla4xxx_mark_device_missing(ha, ddb_entry);
1050         }
1051         return status;
1052 }
1053
1054 /**
1055  * qla4xxx_relogin_device - re-establish session
1056  * @ha: Pointer to host adapter structure.
1057  * @ddb_entry: Pointer to device database entry
1058  *
1059  * This routine does a session relogin with the specified device.
1060  * The ddb entry must be assigned prior to making this call.
1061  **/
1062 int qla4xxx_relogin_device(struct scsi_qla_host *ha,
1063                            struct ddb_entry * ddb_entry)
1064 {
1065         uint16_t relogin_timer;
1066
1067         relogin_timer = max(ddb_entry->default_relogin_timeout,
1068                             (uint16_t)RELOGIN_TOV);
1069         atomic_set(&ddb_entry->relogin_timer, relogin_timer);
1070
1071         DEBUG2(printk("scsi%ld: Relogin ddb [%d]. TOV=%d\n", ha->host_no,
1072                       ddb_entry->fw_ddb_index, relogin_timer));
1073
1074         qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index, 0);
1075
1076         return QLA_SUCCESS;
1077 }
1078
1079 static int qla4xxx_config_nvram(struct scsi_qla_host *ha)
1080 {
1081         unsigned long flags;
1082         union external_hw_config_reg extHwConfig;
1083
1084         DEBUG2(printk("scsi%ld: %s: Get EEProm parameters \n", ha->host_no,
1085                       __func__));
1086         if (ql4xxx_lock_flash(ha) != QLA_SUCCESS)
1087                 return QLA_ERROR;
1088         if (ql4xxx_lock_nvram(ha) != QLA_SUCCESS) {
1089                 ql4xxx_unlock_flash(ha);
1090                 return QLA_ERROR;
1091         }
1092
1093         /* Get EEPRom Parameters from NVRAM and validate */
1094         ql4_printk(KERN_INFO, ha, "Configuring NVRAM ...\n");
1095         if (qla4xxx_is_nvram_configuration_valid(ha) == QLA_SUCCESS) {
1096                 spin_lock_irqsave(&ha->hardware_lock, flags);
1097                 extHwConfig.Asuint32_t =
1098                         rd_nvram_word(ha, eeprom_ext_hw_conf_offset(ha));
1099                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1100         } else {
1101                 ql4_printk(KERN_WARNING, ha,
1102                     "scsi%ld: %s: EEProm checksum invalid.  "
1103                     "Please update your EEPROM\n", ha->host_no,
1104                     __func__);
1105
1106                 /* Attempt to set defaults */
1107                 if (is_qla4010(ha))
1108                         extHwConfig.Asuint32_t = 0x1912;
1109                 else if (is_qla4022(ha) | is_qla4032(ha))
1110                         extHwConfig.Asuint32_t = 0x0023;
1111                 else
1112                         return QLA_ERROR;
1113         }
1114         DEBUG(printk("scsi%ld: %s: Setting extHwConfig to 0xFFFF%04x\n",
1115                      ha->host_no, __func__, extHwConfig.Asuint32_t));
1116
1117         spin_lock_irqsave(&ha->hardware_lock, flags);
1118         writel((0xFFFF << 16) | extHwConfig.Asuint32_t, isp_ext_hw_conf(ha));
1119         readl(isp_ext_hw_conf(ha));
1120         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1121
1122         ql4xxx_unlock_nvram(ha);
1123         ql4xxx_unlock_flash(ha);
1124
1125         return QLA_SUCCESS;
1126 }
1127
1128 /**
1129  * qla4_8xxx_pci_config() - Setup ISP82xx PCI configuration registers.
1130  * @ha: HA context
1131  */
1132 void qla4_8xxx_pci_config(struct scsi_qla_host *ha)
1133 {
1134         pci_set_master(ha->pdev);
1135 }
1136
1137 void qla4xxx_pci_config(struct scsi_qla_host *ha)
1138 {
1139         uint16_t w;
1140         int status;
1141
1142         ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
1143
1144         pci_set_master(ha->pdev);
1145         status = pci_set_mwi(ha->pdev);
1146         /*
1147          * We want to respect framework's setting of PCI configuration space
1148          * command register and also want to make sure that all bits of
1149          * interest to us are properly set in command register.
1150          */
1151         pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
1152         w |= PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
1153         w &= ~PCI_COMMAND_INTX_DISABLE;
1154         pci_write_config_word(ha->pdev, PCI_COMMAND, w);
1155 }
1156
1157 static int qla4xxx_start_firmware_from_flash(struct scsi_qla_host *ha)
1158 {
1159         int status = QLA_ERROR;
1160         unsigned long max_wait_time;
1161         unsigned long flags;
1162         uint32_t mbox_status;
1163
1164         ql4_printk(KERN_INFO, ha, "Starting firmware ...\n");
1165
1166         /*
1167          * Start firmware from flash ROM
1168          *
1169          * WORKAROUND: Stuff a non-constant value that the firmware can
1170          * use as a seed for a random number generator in MB7 prior to
1171          * setting BOOT_ENABLE.  Fixes problem where the TCP
1172          * connections use the same TCP ports after each reboot,
1173          * causing some connections to not get re-established.
1174          */
1175         DEBUG(printk("scsi%d: %s: Start firmware from flash ROM\n",
1176                      ha->host_no, __func__));
1177
1178         spin_lock_irqsave(&ha->hardware_lock, flags);
1179         writel(jiffies, &ha->reg->mailbox[7]);
1180         if (is_qla4022(ha) | is_qla4032(ha))
1181                 writel(set_rmask(NVR_WRITE_ENABLE),
1182                        &ha->reg->u1.isp4022.nvram);
1183
1184         writel(2, &ha->reg->mailbox[6]);
1185         readl(&ha->reg->mailbox[6]);
1186
1187         writel(set_rmask(CSR_BOOT_ENABLE), &ha->reg->ctrl_status);
1188         readl(&ha->reg->ctrl_status);
1189         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1190
1191         /* Wait for firmware to come UP. */
1192         DEBUG2(printk(KERN_INFO "scsi%ld: %s: Wait up to %d seconds for "
1193                       "boot firmware to complete...\n",
1194                       ha->host_no, __func__, FIRMWARE_UP_TOV));
1195         max_wait_time = jiffies + (FIRMWARE_UP_TOV * HZ);
1196         do {
1197                 uint32_t ctrl_status;
1198
1199                 spin_lock_irqsave(&ha->hardware_lock, flags);
1200                 ctrl_status = readw(&ha->reg->ctrl_status);
1201                 mbox_status = readw(&ha->reg->mailbox[0]);
1202                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1203
1204                 if (ctrl_status & set_rmask(CSR_SCSI_PROCESSOR_INTR))
1205                         break;
1206                 if (mbox_status == MBOX_STS_COMMAND_COMPLETE)
1207                         break;
1208
1209                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: Waiting for boot "
1210                     "firmware to complete... ctrl_sts=0x%x, remaining=%ld\n",
1211                     ha->host_no, __func__, ctrl_status, max_wait_time));
1212
1213                 msleep_interruptible(250);
1214         } while (!time_after_eq(jiffies, max_wait_time));
1215
1216         if (mbox_status == MBOX_STS_COMMAND_COMPLETE) {
1217                 DEBUG(printk(KERN_INFO "scsi%ld: %s: Firmware has started\n",
1218                              ha->host_no, __func__));
1219
1220                 spin_lock_irqsave(&ha->hardware_lock, flags);
1221                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
1222                        &ha->reg->ctrl_status);
1223                 readl(&ha->reg->ctrl_status);
1224                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1225
1226                 status = QLA_SUCCESS;
1227         } else {
1228                 printk(KERN_INFO "scsi%ld: %s: Boot firmware failed "
1229                        "-  mbox status 0x%x\n", ha->host_no, __func__,
1230                        mbox_status);
1231                 status = QLA_ERROR;
1232         }
1233         return status;
1234 }
1235
1236 int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
1237 {
1238 #define QL4_LOCK_DRVR_WAIT      60
1239 #define QL4_LOCK_DRVR_SLEEP     1
1240
1241         int drvr_wait = QL4_LOCK_DRVR_WAIT;
1242         while (drvr_wait) {
1243                 if (ql4xxx_lock_drvr(a) == 0) {
1244                         ssleep(QL4_LOCK_DRVR_SLEEP);
1245                         if (drvr_wait) {
1246                                 DEBUG2(printk("scsi%ld: %s: Waiting for "
1247                                               "Global Init Semaphore(%d)...\n",
1248                                               a->host_no,
1249                                               __func__, drvr_wait));
1250                         }
1251                         drvr_wait -= QL4_LOCK_DRVR_SLEEP;
1252                 } else {
1253                         DEBUG2(printk("scsi%ld: %s: Global Init Semaphore "
1254                                       "acquired\n", a->host_no, __func__));
1255                         return QLA_SUCCESS;
1256                 }
1257         }
1258         return QLA_ERROR;
1259 }
1260
1261 /**
1262  * qla4xxx_start_firmware - starts qla4xxx firmware
1263  * @ha: Pointer to host adapter structure.
1264  *
1265  * This routine performs the necessary steps to start the firmware for
1266  * the QLA4010 adapter.
1267  **/
1268 int qla4xxx_start_firmware(struct scsi_qla_host *ha)
1269 {
1270         unsigned long flags = 0;
1271         uint32_t mbox_status;
1272         int status = QLA_ERROR;
1273         int soft_reset = 1;
1274         int config_chip = 0;
1275
1276         if (is_qla4022(ha) | is_qla4032(ha))
1277                 ql4xxx_set_mac_number(ha);
1278
1279         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
1280                 return QLA_ERROR;
1281
1282         spin_lock_irqsave(&ha->hardware_lock, flags);
1283
1284         DEBUG2(printk("scsi%ld: %s: port_ctrl   = 0x%08X\n", ha->host_no,
1285                       __func__, readw(isp_port_ctrl(ha))));
1286         DEBUG(printk("scsi%ld: %s: port_status = 0x%08X\n", ha->host_no,
1287                      __func__, readw(isp_port_status(ha))));
1288
1289         /* Is Hardware already initialized? */
1290         if ((readw(isp_port_ctrl(ha)) & 0x8000) != 0) {
1291                 DEBUG(printk("scsi%ld: %s: Hardware has already been "
1292                              "initialized\n", ha->host_no, __func__));
1293
1294                 /* Receive firmware boot acknowledgement */
1295                 mbox_status = readw(&ha->reg->mailbox[0]);
1296
1297                 DEBUG2(printk("scsi%ld: %s: H/W Config complete - mbox[0]= "
1298                               "0x%x\n", ha->host_no, __func__, mbox_status));
1299
1300                 /* Is firmware already booted? */
1301                 if (mbox_status == 0) {
1302                         /* F/W not running, must be config by net driver */
1303                         config_chip = 1;
1304                         soft_reset = 0;
1305                 } else {
1306                         writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
1307                                &ha->reg->ctrl_status);
1308                         readl(&ha->reg->ctrl_status);
1309                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1310                         if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
1311                                 DEBUG2(printk("scsi%ld: %s: Get firmware "
1312                                               "state -- state = 0x%x\n",
1313                                               ha->host_no,
1314                                               __func__, ha->firmware_state));
1315                                 /* F/W is running */
1316                                 if (ha->firmware_state &
1317                                     FW_STATE_CONFIG_WAIT) {
1318                                         DEBUG2(printk("scsi%ld: %s: Firmware "
1319                                                       "in known state -- "
1320                                                       "config and "
1321                                                       "boot, state = 0x%x\n",
1322                                                       ha->host_no, __func__,
1323                                                       ha->firmware_state));
1324                                         config_chip = 1;
1325                                         soft_reset = 0;
1326                                 }
1327                         } else {
1328                                 DEBUG2(printk("scsi%ld: %s: Firmware in "
1329                                               "unknown state -- resetting,"
1330                                               " state = "
1331                                               "0x%x\n", ha->host_no, __func__,
1332                                               ha->firmware_state));
1333                         }
1334                         spin_lock_irqsave(&ha->hardware_lock, flags);
1335                 }
1336         } else {
1337                 DEBUG(printk("scsi%ld: %s: H/W initialization hasn't been "
1338                              "started - resetting\n", ha->host_no, __func__));
1339         }
1340         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1341
1342         DEBUG(printk("scsi%ld: %s: Flags soft_rest=%d, config= %d\n ",
1343                      ha->host_no, __func__, soft_reset, config_chip));
1344         if (soft_reset) {
1345                 DEBUG(printk("scsi%ld: %s: Issue Soft Reset\n", ha->host_no,
1346                              __func__));
1347                 status = qla4xxx_soft_reset(ha);        /* NOTE: acquires drvr
1348                                                          * lock again, but ok */
1349                 if (status == QLA_ERROR) {
1350                         DEBUG(printk("scsi%d: %s: Soft Reset failed!\n",
1351                                      ha->host_no, __func__));
1352                         ql4xxx_unlock_drvr(ha);
1353                         return QLA_ERROR;
1354                 }
1355                 config_chip = 1;
1356
1357                 /* Reset clears the semaphore, so acquire again */
1358                 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
1359                         return QLA_ERROR;
1360         }
1361
1362         if (config_chip) {
1363                 if ((status = qla4xxx_config_nvram(ha)) == QLA_SUCCESS)
1364                         status = qla4xxx_start_firmware_from_flash(ha);
1365         }
1366
1367         ql4xxx_unlock_drvr(ha);
1368         if (status == QLA_SUCCESS) {
1369                 if (test_and_clear_bit(AF_GET_CRASH_RECORD, &ha->flags))
1370                         qla4xxx_get_crash_record(ha);
1371         } else {
1372                 DEBUG(printk("scsi%ld: %s: Firmware has NOT started\n",
1373                              ha->host_no, __func__));
1374         }
1375         return status;
1376 }
1377
1378
1379 /**
1380  * qla4xxx_initialize_adapter - initiailizes hba
1381  * @ha: Pointer to host adapter structure.
1382  * @renew_ddb_list: Indicates what to do with the adapter's ddb list
1383  *      after adapter recovery has completed.
1384  *      0=preserve ddb list, 1=destroy and rebuild ddb list
1385  *
1386  * This routine parforms all of the steps necessary to initialize the adapter.
1387  *
1388  **/
1389 int qla4xxx_initialize_adapter(struct scsi_qla_host *ha,
1390                                uint8_t renew_ddb_list)
1391 {
1392         int status = QLA_ERROR;
1393         int8_t ip_address[IP_ADDR_LEN] = {0} ;
1394
1395         ha->eeprom_cmd_data = 0;
1396
1397         ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
1398         ha->isp_ops->pci_config(ha);
1399
1400         ha->isp_ops->disable_intrs(ha);
1401
1402         /* Initialize the Host adapter request/response queues and firmware */
1403         if (ha->isp_ops->start_firmware(ha) == QLA_ERROR)
1404                 goto exit_init_hba;
1405
1406         if (qla4xxx_get_fw_version(ha) == QLA_ERROR)
1407                 goto exit_init_hba;
1408
1409         if (ha->isp_ops->get_sys_info(ha) == QLA_ERROR)
1410                 goto exit_init_hba;
1411
1412         if (qla4xxx_init_local_data(ha) == QLA_ERROR)
1413                 goto exit_init_hba;
1414
1415         status = qla4xxx_init_firmware(ha);
1416         if (status == QLA_ERROR)
1417                 goto exit_init_hba;
1418
1419         /*
1420          * FW is waiting to get an IP address from DHCP server: Skip building
1421          * the ddb_list and wait for DHCP lease acquired aen to come in
1422          * followed by 0x8014 aen" to trigger the tgt discovery process.
1423          */
1424         if (ha->firmware_state & FW_STATE_CONFIGURING_IP)
1425                 goto exit_init_online;
1426
1427         /* Skip device discovery if ip and subnet is zero */
1428         if (memcmp(ha->ip_address, ip_address, IP_ADDR_LEN) == 0 ||
1429             memcmp(ha->subnet_mask, ip_address, IP_ADDR_LEN) == 0)
1430                 goto exit_init_online;
1431
1432         if (renew_ddb_list == PRESERVE_DDB_LIST) {
1433                 /*
1434                  * We want to preserve lun states (i.e. suspended, etc.)
1435                  * for recovery initiated by the driver.  So just update
1436                  * the device states for the existing ddb_list.
1437                  */
1438                 qla4xxx_reinitialize_ddb_list(ha);
1439         } else if (renew_ddb_list == REBUILD_DDB_LIST) {
1440                 /*
1441                  * We want to build the ddb_list from scratch during
1442                  * driver initialization and recovery initiated by the
1443                  * INT_HBA_RESET IOCTL.
1444                  */
1445                 status = qla4xxx_initialize_ddb_list(ha);
1446                 if (status == QLA_ERROR) {
1447                         DEBUG2(printk("%s(%ld) Error occurred during build"
1448                                       "ddb list\n", __func__, ha->host_no));
1449                         goto exit_init_hba;
1450                 }
1451
1452         }
1453         if (!ha->tot_ddbs) {
1454                 DEBUG2(printk("scsi%ld: Failed to initialize devices or none "
1455                               "present in Firmware device database\n",
1456                               ha->host_no));
1457         }
1458
1459 exit_init_online:
1460         set_bit(AF_ONLINE, &ha->flags);
1461 exit_init_hba:
1462         if (is_qla8022(ha) && (status == QLA_ERROR)) {
1463                 /* Since interrupts are registered in start_firmware for
1464                  * 82xx, release them here if initialize_adapter fails */
1465                 qla4xxx_free_irqs(ha);
1466         }
1467
1468         DEBUG2(printk("scsi%ld: initialize adapter: %s\n", ha->host_no,
1469             status == QLA_ERROR ? "FAILED" : "SUCCEDED"));
1470         return status;
1471 }
1472
1473 /**
1474  * qla4xxx_add_device_dynamically - ddb addition due to an AEN
1475  * @ha:  Pointer to host adapter structure.
1476  * @fw_ddb_index:  Firmware's device database index
1477  *
1478  * This routine processes adds a device as a result of an 8014h AEN.
1479  **/
1480 static void qla4xxx_add_device_dynamically(struct scsi_qla_host *ha,
1481                                            uint32_t fw_ddb_index)
1482 {
1483         struct ddb_entry * ddb_entry;
1484         uint32_t new_tgt;
1485
1486         /* First allocate a device structure */
1487         ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index, &new_tgt);
1488         if (ddb_entry == NULL) {
1489                 DEBUG2(printk(KERN_WARNING
1490                               "scsi%ld: Unable to allocate memory to add "
1491                               "fw_ddb_index %d\n", ha->host_no, fw_ddb_index));
1492                 return;
1493         }
1494
1495         if (!new_tgt && (ddb_entry->fw_ddb_index != fw_ddb_index)) {
1496                 /* Target has been bound to a new fw_ddb_index */
1497                 qla4xxx_free_ddb(ha, ddb_entry);
1498                 ddb_entry = qla4xxx_alloc_ddb(ha, fw_ddb_index);
1499                 if (ddb_entry == NULL) {
1500                         DEBUG2(printk(KERN_WARNING
1501                                 "scsi%ld: Unable to allocate memory"
1502                                 " to add fw_ddb_index %d\n",
1503                                 ha->host_no, fw_ddb_index));
1504                         return;
1505                 }
1506         }
1507         if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
1508                                     QLA_ERROR) {
1509                 ha->fw_ddb_index_map[fw_ddb_index] =
1510                                         (struct ddb_entry *)INVALID_ENTRY;
1511                 DEBUG2(printk(KERN_WARNING
1512                               "scsi%ld: failed to add new device at index "
1513                               "[%d]\n Unable to retrieve fw ddb entry\n",
1514                               ha->host_no, fw_ddb_index));
1515                 qla4xxx_free_ddb(ha, ddb_entry);
1516                 return;
1517         }
1518
1519         if (qla4xxx_add_sess(ddb_entry)) {
1520                 DEBUG2(printk(KERN_WARNING
1521                               "scsi%ld: failed to add new device at index "
1522                               "[%d]\n Unable to add connection and session\n",
1523                               ha->host_no, fw_ddb_index));
1524                 qla4xxx_free_ddb(ha, ddb_entry);
1525         }
1526 }
1527
1528 /**
1529  * qla4xxx_process_ddb_changed - process ddb state change
1530  * @ha - Pointer to host adapter structure.
1531  * @fw_ddb_index - Firmware's device database index
1532  * @state - Device state
1533  *
1534  * This routine processes a Decive Database Changed AEN Event.
1535  **/
1536 int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
1537                 uint32_t state, uint32_t conn_err)
1538 {
1539         struct ddb_entry * ddb_entry;
1540         uint32_t old_fw_ddb_device_state;
1541
1542         /* check for out of range index */
1543         if (fw_ddb_index >= MAX_DDB_ENTRIES)
1544                 return QLA_ERROR;
1545
1546         /* Get the corresponging ddb entry */
1547         ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
1548         /* Device does not currently exist in our database. */
1549         if (ddb_entry == NULL) {
1550                 if (state == DDB_DS_SESSION_ACTIVE)
1551                         qla4xxx_add_device_dynamically(ha, fw_ddb_index);
1552                 return QLA_SUCCESS;
1553         }
1554
1555         /* Device already exists in our database. */
1556         old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
1557         DEBUG2(printk("scsi%ld: %s DDB - old state= 0x%x, new state=0x%x for "
1558                       "index [%d]\n", ha->host_no, __func__,
1559                       ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
1560         if (old_fw_ddb_device_state == state &&
1561             state == DDB_DS_SESSION_ACTIVE) {
1562                 if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) {
1563                         atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
1564                         iscsi_unblock_session(ddb_entry->sess);
1565                 }
1566                 return QLA_SUCCESS;
1567         }
1568
1569         ddb_entry->fw_ddb_device_state = state;
1570         /* Device is back online. */
1571         if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
1572                 atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
1573                 atomic_set(&ddb_entry->relogin_retry_count, 0);
1574                 atomic_set(&ddb_entry->relogin_timer, 0);
1575                 clear_bit(DF_RELOGIN, &ddb_entry->flags);
1576                 clear_bit(DF_NO_RELOGIN, &ddb_entry->flags);
1577                 iscsi_unblock_session(ddb_entry->sess);
1578                 iscsi_session_event(ddb_entry->sess,
1579                                     ISCSI_KEVENT_CREATE_SESSION);
1580                 /*
1581                  * Change the lun state to READY in case the lun TIMEOUT before
1582                  * the device came back.
1583                  */
1584         } else {
1585                 /* Device went away, mark device missing */
1586                 if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE) {
1587                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s mark missing "
1588                                         "ddb_entry 0x%p sess 0x%p conn 0x%p\n",
1589                                         __func__, ddb_entry,
1590                                         ddb_entry->sess, ddb_entry->conn));
1591                         qla4xxx_mark_device_missing(ha, ddb_entry);
1592                 }
1593
1594                 /*
1595                  * Relogin if device state changed to a not active state.
1596                  * However, do not relogin if a RELOGIN is in process, or
1597                  * we are not allowed to relogin to this DDB.
1598                  */
1599                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_FAILED &&
1600                     !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
1601                     !test_bit(DF_NO_RELOGIN, &ddb_entry->flags) &&
1602                     qla4_is_relogin_allowed(ha, conn_err)) {
1603                         /*
1604                          * This triggers a relogin.  After the relogin_timer
1605                          * expires, the relogin gets scheduled.  We must wait a
1606                          * minimum amount of time since receiving an 0x8014 AEN
1607                          * with failed device_state or a logout response before
1608                          * we can issue another relogin.
1609                          */
1610                         /* Firmware pads this timeout: (time2wait +1).
1611                          * Driver retry to login should be longer than F/W.
1612                          * Otherwise F/W will fail
1613                          * set_ddb() mbx cmd with 0x4005 since it still
1614                          * counting down its time2wait.
1615                          */
1616                         atomic_set(&ddb_entry->relogin_timer, 0);
1617                         atomic_set(&ddb_entry->retry_relogin_timer,
1618                                    ddb_entry->default_time2wait + 4);
1619                         DEBUG(printk("scsi%ld: %s: ddb[%d] "
1620                             "initiate relogin after %d seconds\n",
1621                             ha->host_no, __func__,
1622                             ddb_entry->fw_ddb_index,
1623                             ddb_entry->default_time2wait + 4));
1624                 } else {
1625                         DEBUG(printk("scsi%ld: %s: ddb[%d] "
1626                             "relogin not initiated, state = %d, "
1627                             "ddb_entry->flags = 0x%lx\n",
1628                             ha->host_no, __func__,
1629                             ddb_entry->fw_ddb_index,
1630                             ddb_entry->fw_ddb_device_state,
1631                             ddb_entry->flags));
1632                 }
1633         }
1634         return QLA_SUCCESS;
1635 }