drivers/scsi/qla4xxx/ql4_init.c

   1 /*
   2  * QLogic iSCSI HBA Driver
   3  * Copyright (c)  2003-2006 QLogic Corporation
   4  *
   5  * See LICENSE.qla4xxx for copyright and licensing details.
   6  */
   7
   8 #include "ql4_def.h"
   9
  10 /*
  11  * QLogic ISP4xxx Hardware Support Function Prototypes.
  12  */
  13
  14 static void ql4xxx_set_mac_number(struct scsi_qla_host *ha)
  15 {
  16         uint32_t value;
  17         uint8_t func_number;
  18         unsigned long flags;
  19
  20         /* Get the function number */
  21         spin_lock_irqsave(&ha->hardware_lock, flags);
  22         value = readw(&ha->reg->ctrl_status);
  23         spin_unlock_irqrestore(&ha->hardware_lock, flags);
  24
  25         func_number = (uint8_t) ((value >> 4) & 0x30);
  26         switch (value & ISP_CONTROL_FN_MASK) {
  27         case ISP_CONTROL_FN0_SCSI:
  28                 ha->mac_index = 1;
  29                 break;
  30         case ISP_CONTROL_FN1_SCSI:
  31                 ha->mac_index = 3;
  32                 break;
  33         default:
  34                 DEBUG2(printk("scsi%ld: %s: Invalid function number, "
  35                               "ispControlStatus = 0x%x\n", ha->host_no,
  36                               __func__, value));
  37                 break;
  38         }
  39         DEBUG2(printk("scsi%ld: %s: mac_index %d.\n", ha->host_no, __func__,
  40                       ha->mac_index));
  41 }
  42
  43 /**
  44  * qla4xxx_free_ddb - deallocate ddb
  45  * @ha: pointer to host adapter structure.
  46  * @ddb_entry: pointer to device database entry
  47  *
  48  * This routine deallocates and unlinks the specified ddb_entry from the
  49  * adapter's
  50  **/
  51 void qla4xxx_free_ddb(struct scsi_qla_host *ha, struct ddb_entry *ddb_entry)
  52 {
  53         /* Remove device entry from list */
  54         list_del_init(&ddb_entry->list);
  55
  56         /* Remove device pointer from index mapping arrays */
  57         ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] =
  58                 (struct ddb_entry *) INVALID_ENTRY;
  59         ha->tot_ddbs--;
  60
  61         /* Free memory and scsi-ml struct for device entry */
  62         qla4xxx_destroy_sess(ddb_entry);
  63 }
  64
  65 /**
  66  * qla4xxx_free_ddb_list - deallocate all ddbs
  67  * @ha: pointer to host adapter structure.
  68  *
  69  * This routine deallocates and removes all devices on the sppecified adapter.
  70  **/
  71 void qla4xxx_free_ddb_list(struct scsi_qla_host *ha)
  72 {
  73         struct list_head *ptr;
  74         struct ddb_entry *ddb_entry;
  75
  76         while (!list_empty(&ha->ddb_list)) {
  77                 ptr = ha->ddb_list.next;
  78                 /* Free memory for device entry and remove */
  79                 ddb_entry = list_entry(ptr, struct ddb_entry, list);
  80                 qla4xxx_free_ddb(ha, ddb_entry);
  81         }
  82 }
  83
  84 /**
  85  * qla4xxx_init_rings - initialize hw queues
  86  * @ha: pointer to host adapter structure.
  87  *
  88  * This routine initializes the internal queues for the specified adapter.
  89  * The QLA4010 requires us to restart the queues at index 0.
  90  * The QLA4000 doesn't care, so just default to QLA4010's requirement.
  91  **/
  92 int qla4xxx_init_rings(struct scsi_qla_host *ha)
  93 {
  94         unsigned long flags = 0;
  95
  96         /* Initialize request queue. */
  97         spin_lock_irqsave(&ha->hardware_lock, flags);
  98         ha->request_out = 0;
  99         ha->request_in = 0;
 100         ha->request_ptr = &ha->request_ring[ha->request_in];
 101         ha->req_q_count = REQUEST_QUEUE_DEPTH;
 102
 103         /* Initialize response queue. */
 104         ha->response_in = 0;
 105         ha->response_out = 0;
 106         ha->response_ptr = &ha->response_ring[ha->response_out];
 107
 108         /*
 109          * Initialize DMA Shadow registers.  The firmware is really supposed to
 110          * take care of this, but on some uniprocessor systems, the shadow
 111          * registers aren't cleared-- causing the interrupt_handler to think
 112          * there are responses to be processed when there aren't.
 113          */
 114         ha->shadow_regs->req_q_out = __constant_cpu_to_le32(0);
 115         ha->shadow_regs->rsp_q_in = __constant_cpu_to_le32(0);
 116         wmb();
 117
 118         writel(0, &ha->reg->req_q_in);
 119         writel(0, &ha->reg->rsp_q_out);
 120         readl(&ha->reg->rsp_q_out);
 121
 122         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 123
 124         return QLA_SUCCESS;
 125 }
 126
 127 /**
 128  * qla4xxx_validate_mac_address - validate adapter MAC address(es)
 129  * @ha: pointer to host adapter structure.
 130  *
 131  **/
 132 static int qla4xxx_validate_mac_address(struct scsi_qla_host *ha)
 133 {
 134         struct flash_sys_info *sys_info;
 135         dma_addr_t sys_info_dma;
 136         int status = QLA_ERROR;
 137
 138         sys_info = dma_alloc_coherent(&ha->pdev->dev, sizeof(*sys_info),
 139                                       &sys_info_dma, GFP_KERNEL);
 140         if (sys_info == NULL) {
 141                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
 142                               ha->host_no, __func__));
 143
 144                 goto exit_validate_mac_no_free;
 145         }
 146         memset(sys_info, 0, sizeof(*sys_info));
 147
 148         /* Get flash sys info */
 149         if (qla4xxx_get_flash(ha, sys_info_dma, FLASH_OFFSET_SYS_INFO,
 150                               sizeof(*sys_info)) != QLA_SUCCESS) {
 151                 DEBUG2(printk("scsi%ld: %s: get_flash FLASH_OFFSET_SYS_INFO "
 152                               "failed\n", ha->host_no, __func__));
 153
 154                 goto exit_validate_mac;
 155         }
 156
 157         /* Save M.A.C. address & serial_number */
 158         memcpy(ha->my_mac, &sys_info->physAddr[0].address[0],
 159                min(sizeof(ha->my_mac),
 160                    sizeof(sys_info->physAddr[0].address)));
 161         memcpy(ha->serial_number, &sys_info->acSerialNumber,
 162                min(sizeof(ha->serial_number),
 163                    sizeof(sys_info->acSerialNumber)));
 164
 165         status = QLA_SUCCESS;
 166
 167  exit_validate_mac:
 168         dma_free_coherent(&ha->pdev->dev, sizeof(*sys_info), sys_info,
 169                           sys_info_dma);
 170
 171  exit_validate_mac_no_free:
 172         return status;
 173 }
 174
 175 /**
 176  * qla4xxx_init_local_data - initialize adapter specific local data
 177  * @ha: pointer to host adapter structure.
 178  *
 179  **/
 180 static int qla4xxx_init_local_data(struct scsi_qla_host *ha)
 181 {
 182         /* Initilize aen queue */
 183         ha->aen_q_count = MAX_AEN_ENTRIES;
 184
 185         return qla4xxx_get_firmware_status(ha);
 186 }
 187
 188 static int qla4xxx_fw_ready(struct scsi_qla_host *ha)
 189 {
 190         uint32_t timeout_count;
 191         int ready = 0;
 192
 193         DEBUG2(dev_info(&ha->pdev->dev, "Waiting for Firmware Ready..\n"));
 194         for (timeout_count = ADAPTER_INIT_TOV; timeout_count > 0;
 195              timeout_count--) {
 196                 if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
 197                         qla4xxx_get_dhcp_ip_address(ha);
 198
 199                 /* Get firmware state. */
 200                 if (qla4xxx_get_firmware_state(ha) != QLA_SUCCESS) {
 201                         DEBUG2(printk("scsi%ld: %s: unable to get firmware "
 202                                       "state\n", ha->host_no, __func__));
 203                         break;
 204
 205                 }
 206
 207                 if (ha->firmware_state & FW_STATE_ERROR) {
 208                         DEBUG2(printk("scsi%ld: %s: an unrecoverable error has"
 209                                       " occurred\n", ha->host_no, __func__));
 210                         break;
 211
 212                 }
 213                 if (ha->firmware_state & FW_STATE_CONFIG_WAIT) {
 214                         /*
 215                          * The firmware has not yet been issued an Initialize
 216                          * Firmware command, so issue it now.
 217                          */
 218                         if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR)
 219                                 break;
 220
 221                         /* Go back and test for ready state - no wait. */
 222                         continue;
 223                 }
 224
 225                 if (ha->firmware_state == FW_STATE_READY) {
 226                         DEBUG2(dev_info(&ha->pdev->dev, "Firmware Ready..\n"));
 227                         /* The firmware is ready to process SCSI commands. */
 228                         DEBUG2(dev_info(&ha->pdev->dev,
 229                                           "scsi%ld: %s: MEDIA TYPE - %s\n",
 230                                           ha->host_no,
 231                                           __func__, (ha->addl_fw_state &
 232                                                      FW_ADDSTATE_OPTICAL_MEDIA)
 233                                           != 0 ? "OPTICAL" : "COPPER"));
 234                         DEBUG2(dev_info(&ha->pdev->dev,
 235                                           "scsi%ld: %s: DHCP STATE Enabled "
 236                                           "%s\n",
 237                                           ha->host_no, __func__,
 238                                           (ha->addl_fw_state &
 239                                            FW_ADDSTATE_DHCP_ENABLED) != 0 ?
 240                                           "YES" : "NO"));
 241                         DEBUG2(dev_info(&ha->pdev->dev,
 242                                           "scsi%ld: %s: LINK %s\n",
 243                                           ha->host_no, __func__,
 244                                           (ha->addl_fw_state &
 245                                            FW_ADDSTATE_LINK_UP) != 0 ?
 246                                           "UP" : "DOWN"));
 247                         DEBUG2(dev_info(&ha->pdev->dev,
 248                                           "scsi%ld: %s: iSNS Service "
 249                                           "Started %s\n",
 250                                           ha->host_no, __func__,
 251                                           (ha->addl_fw_state &
 252                                            FW_ADDSTATE_ISNS_SVC_ENABLED) != 0 ?
 253                                           "YES" : "NO"));
 254
 255                         ready = 1;
 256                         break;
 257                 }
 258                 DEBUG2(printk("scsi%ld: %s: waiting on fw, state=%x:%x - "
 259                               "seconds expired= %d\n", ha->host_no, __func__,
 260                               ha->firmware_state, ha->addl_fw_state,
 261                               timeout_count));
 262                 if (is_qla4032(ha) &&
 263                         !(ha->addl_fw_state & FW_ADDSTATE_LINK_UP) &&
 264                         (timeout_count < ADAPTER_INIT_TOV - 5)) {
 265                         break;
 266                 }
 267
 268                 msleep(1000);
 269         }                       /* end of for */
 270
 271         if (timeout_count == 0)
 272                 DEBUG2(printk("scsi%ld: %s: FW Initialization timed out!\n",
 273                               ha->host_no, __func__));
 274
 275         if (ha->firmware_state & FW_STATE_DHCP_IN_PROGRESS)  {
 276                 DEBUG2(printk("scsi%ld: %s: FW is reporting its waiting to"
 277                               " grab an IP address from DHCP server\n",
 278                               ha->host_no, __func__));
 279                 ready = 1;
 280         }
 281
 282         return ready;
 283 }
 284
 285 /**
 286  * qla4xxx_init_firmware - initializes the firmware.
 287  * @ha: pointer to host adapter structure.
 288  *
 289  **/
 290 static int qla4xxx_init_firmware(struct scsi_qla_host *ha)
 291 {
 292         int status = QLA_ERROR;
 293
 294         dev_info(&ha->pdev->dev, "Initializing firmware..\n");
 295         if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR) {
 296                 DEBUG2(printk("scsi%ld: %s: Failed to initialize firmware "
 297                               "control block\n", ha->host_no, __func__));
 298                 return status;
 299         }
 300         if (!qla4xxx_fw_ready(ha))
 301                 return status;
 302
 303         set_bit(AF_ONLINE, &ha->flags);
 304         return qla4xxx_get_firmware_status(ha);
 305 }
 306
 307 static struct ddb_entry* qla4xxx_get_ddb_entry(struct scsi_qla_host *ha,
 308                                                uint32_t fw_ddb_index)
 309 {
 310         struct dev_db_entry *fw_ddb_entry = NULL;
 311         dma_addr_t fw_ddb_entry_dma;
 312         struct ddb_entry *ddb_entry = NULL;
 313         int found = 0;
 314         uint32_t device_state;
 315
 316         /* Make sure the dma buffer is valid */
 317         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
 318                                           sizeof(*fw_ddb_entry),
 319                                           &fw_ddb_entry_dma, GFP_KERNEL);
 320         if (fw_ddb_entry == NULL) {
 321                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
 322                               ha->host_no, __func__));
 323                 return NULL;
 324         }
 325
 326         if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
 327                                     fw_ddb_entry_dma, NULL, NULL,
 328                                     &device_state, NULL, NULL, NULL) ==
 329             QLA_ERROR) {
 330                 DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
 331                               "fw_ddb_index %d\n", ha->host_no, __func__,
 332                               fw_ddb_index));
 333                 return NULL;
 334         }
 335
 336         /* Allocate DDB if not already allocated. */
 337         DEBUG2(printk("scsi%ld: %s: Looking for ddb[%d]\n", ha->host_no,
 338                       __func__, fw_ddb_index));
 339         list_for_each_entry(ddb_entry, &ha->ddb_list, list) {
 340                 if (memcmp(ddb_entry->iscsi_name, fw_ddb_entry->iscsiName,
 341                            ISCSI_NAME_SIZE) == 0) {
 342                         found++;
 343                         break;
 344                 }
 345         }
 346
 347         if (!found) {
 348                 DEBUG2(printk("scsi%ld: %s: ddb[%d] not found - allocating "
 349                               "new ddb\n", ha->host_no, __func__,
 350                               fw_ddb_index));
 351                 ddb_entry = qla4xxx_alloc_ddb(ha, fw_ddb_index);
 352         }
 353
 354         /* if not found allocate new ddb */
 355         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
 356                           fw_ddb_entry_dma);
 357
 358         return ddb_entry;
 359 }
 360
 361 /**
 362  * qla4xxx_update_ddb_entry - update driver's internal ddb
 363  * @ha: pointer to host adapter structure.
 364  * @ddb_entry: pointer to device database structure to be filled
 365  * @fw_ddb_index: index of the ddb entry in fw ddb table
 366  *
 367  * This routine updates the driver's internal device database entry
 368  * with information retrieved from the firmware's device database
 369  * entry for the specified device. The ddb_entry->fw_ddb_index field
 370  * must be initialized prior to calling this routine
 371  *
 372  **/
 373 int qla4xxx_update_ddb_entry(struct scsi_qla_host *ha,
 374                              struct ddb_entry *ddb_entry,
 375                              uint32_t fw_ddb_index)
 376 {
 377         struct dev_db_entry *fw_ddb_entry = NULL;
 378         dma_addr_t fw_ddb_entry_dma;
 379         int status = QLA_ERROR;
 380
 381         if (ddb_entry == NULL) {
 382                 DEBUG2(printk("scsi%ld: %s: ddb_entry is NULL\n", ha->host_no,
 383                               __func__));
 384                 goto exit_update_ddb;
 385         }
 386
 387         /* Make sure the dma buffer is valid */
 388         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
 389                                           sizeof(*fw_ddb_entry),
 390                                           &fw_ddb_entry_dma, GFP_KERNEL);
 391         if (fw_ddb_entry == NULL) {
 392                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
 393                               ha->host_no, __func__));
 394
 395                 goto exit_update_ddb;
 396         }
 397
 398         if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
 399                                     fw_ddb_entry_dma, NULL, NULL,
 400                                     &ddb_entry->fw_ddb_device_state, NULL,
 401                                     &ddb_entry->tcp_source_port_num,
 402                                     &ddb_entry->connection_id) ==
 403             QLA_ERROR) {
 404                 DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
 405                               "fw_ddb_index %d\n", ha->host_no, __func__,
 406                               fw_ddb_index));
 407
 408                 goto exit_update_ddb;
 409         }
 410
 411         status = QLA_SUCCESS;
 412         ddb_entry->target_session_id = le16_to_cpu(fw_ddb_entry->TSID);
 413         ddb_entry->task_mgmt_timeout =
 414                 le16_to_cpu(fw_ddb_entry->taskMngmntTimeout);
 415         ddb_entry->CmdSn = 0;
 416         ddb_entry->exe_throttle = le16_to_cpu(fw_ddb_entry->exeThrottle);
 417         ddb_entry->default_relogin_timeout =
 418                 le16_to_cpu(fw_ddb_entry->taskMngmntTimeout);
 419         ddb_entry->default_time2wait = le16_to_cpu(fw_ddb_entry->minTime2Wait);
 420
 421         /* Update index in case it changed */
 422         ddb_entry->fw_ddb_index = fw_ddb_index;
 423         ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
 424
 425         ddb_entry->port = le16_to_cpu(fw_ddb_entry->portNumber);
 426         ddb_entry->tpgt = le32_to_cpu(fw_ddb_entry->TargetPortalGroup);
 427         memcpy(&ddb_entry->iscsi_name[0], &fw_ddb_entry->iscsiName[0],
 428                min(sizeof(ddb_entry->iscsi_name),
 429                    sizeof(fw_ddb_entry->iscsiName)));
 430         memcpy(&ddb_entry->ip_addr[0], &fw_ddb_entry->ipAddr[0],
 431                min(sizeof(ddb_entry->ip_addr), sizeof(fw_ddb_entry->ipAddr)));
 432
 433         DEBUG2(printk("scsi%ld: %s: ddb[%d] - State= %x status= %d.\n",
 434                       ha->host_no, __func__, fw_ddb_index,
 435                       ddb_entry->fw_ddb_device_state, status));
 436
 437  exit_update_ddb:
 438         if (fw_ddb_entry)
 439                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
 440                                   fw_ddb_entry, fw_ddb_entry_dma);
 441
 442         return status;
 443 }
 444
 445 /**
 446  * qla4xxx_alloc_ddb - allocate device database entry
 447  * @ha: Pointer to host adapter structure.
 448  * @fw_ddb_index: Firmware's device database index
 449  *
 450  * This routine allocates a ddb_entry, ititializes some values, and
 451  * inserts it into the ddb list.
 452  **/
 453 struct ddb_entry * qla4xxx_alloc_ddb(struct scsi_qla_host *ha,
 454                                      uint32_t fw_ddb_index)
 455 {
 456         struct ddb_entry *ddb_entry;
 457
 458         DEBUG2(printk("scsi%ld: %s: fw_ddb_index [%d]\n", ha->host_no,
 459                       __func__, fw_ddb_index));
 460
 461         ddb_entry = qla4xxx_alloc_sess(ha);
 462         if (ddb_entry == NULL) {
 463                 DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
 464                               "to add fw_ddb_index [%d]\n",
 465                               ha->host_no, __func__, fw_ddb_index));
 466                 return ddb_entry;
 467         }
 468
 469         ddb_entry->fw_ddb_index = fw_ddb_index;
 470         atomic_set(&ddb_entry->port_down_timer, ha->port_down_retry_count);
 471         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
 472         atomic_set(&ddb_entry->relogin_timer, 0);
 473         atomic_set(&ddb_entry->relogin_retry_count, 0);
 474         atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
 475         list_add_tail(&ddb_entry->list, &ha->ddb_list);
 476         ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
 477         ha->tot_ddbs++;
 478
 479         return ddb_entry;
 480 }
 481
 482 /**
 483  * qla4xxx_configure_ddbs - builds driver ddb list
 484  * @ha: Pointer to host adapter structure.
 485  *
 486  * This routine searches for all valid firmware ddb entries and builds
 487  * an internal ddb list. Ddbs that are considered valid are those with
 488  * a device state of SESSION_ACTIVE.
 489  **/
 490 static int qla4xxx_build_ddb_list(struct scsi_qla_host *ha)
 491 {
 492         int status = QLA_SUCCESS;
 493         uint32_t fw_ddb_index = 0;
 494         uint32_t next_fw_ddb_index = 0;
 495         uint32_t ddb_state;
 496         uint32_t conn_err, err_code;
 497         struct ddb_entry *ddb_entry;
 498
 499         dev_info(&ha->pdev->dev, "Initializing DDBs ...\n");
 500         for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES;
 501              fw_ddb_index = next_fw_ddb_index) {
 502                 /* First, let's see if a device exists here */
 503                 if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, NULL, 0, NULL,
 504                                             &next_fw_ddb_index, &ddb_state,
 505                                             &conn_err, NULL, NULL) ==
 506                     QLA_ERROR) {
 507                         DEBUG2(printk("scsi%ld: %s: get_ddb_entry, "
 508                                       "fw_ddb_index %d failed", ha->host_no,
 509                                       __func__, fw_ddb_index));
 510                         return QLA_ERROR;
 511                 }
 512
 513                 DEBUG2(printk("scsi%ld: %s: Getting DDB[%d] ddbstate=0x%x, "
 514                               "next_fw_ddb_index=%d.\n", ha->host_no, __func__,
 515                               fw_ddb_index, ddb_state, next_fw_ddb_index));
 516
 517                 /* Issue relogin, if necessary. */
 518                 if (ddb_state == DDB_DS_SESSION_FAILED ||
 519                     ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) {
 520                         /* Try and login to device */
 521                         DEBUG2(printk("scsi%ld: %s: Login to DDB[%d]\n",
 522                                       ha->host_no, __func__, fw_ddb_index));
 523                         err_code = ((conn_err & 0x00ff0000) >> 16);
 524                         if (err_code == 0x1c || err_code == 0x06) {
 525                                 DEBUG2(printk("scsi%ld: %s send target "
 526                                               "completed "
 527                                               "or access denied failure\n",
 528                                               ha->host_no, __func__));
 529                         } else
 530                                 qla4xxx_set_ddb_entry(ha, fw_ddb_index, 0);
 531                 }
 532
 533                 if (ddb_state != DDB_DS_SESSION_ACTIVE)
 534                         goto next_one;
 535                 /*
 536                  * if fw_ddb with session active state found,
 537                  * add to ddb_list
 538                  */
 539                 DEBUG2(printk("scsi%ld: %s: DDB[%d] added to list\n",
 540                               ha->host_no, __func__, fw_ddb_index));
 541
 542                 /* Add DDB to internal our ddb list. */
 543                 ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index);
 544                 if (ddb_entry == NULL) {
 545                         DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
 546                                       "for device at fw_ddb_index %d\n",
 547                                       ha->host_no, __func__, fw_ddb_index));
 548                         return QLA_ERROR;
 549                 }
 550                 /* Fill in the device structure */
 551                 if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
 552                     QLA_ERROR) {
 553                         ha->fw_ddb_index_map[fw_ddb_index] =
 554                                 (struct ddb_entry *)INVALID_ENTRY;
 555
 556
 557                         DEBUG2(printk("scsi%ld: %s: update_ddb_entry failed "
 558                                       "for fw_ddb_index %d.\n",
 559                                       ha->host_no, __func__, fw_ddb_index));
 560                         return QLA_ERROR;
 561                 }
 562
 563 next_one:
 564                 /* We know we've reached the last device when
 565                  * next_fw_ddb_index is 0 */
 566                 if (next_fw_ddb_index == 0)
 567                         break;
 568         }
 569
 570         dev_info(&ha->pdev->dev, "DDB list done..\n");
 571
 572         return status;
 573 }
 574
 575 struct qla4_relog_scan {
 576         int halt_wait;
 577         uint32_t conn_err;
 578         uint32_t err_code;
 579         uint32_t fw_ddb_index;
 580         uint32_t next_fw_ddb_index;
 581         uint32_t fw_ddb_device_state;
 582 };
 583
 584 static int qla4_test_rdy(struct scsi_qla_host *ha, struct qla4_relog_scan *rs)
 585 {
 586         struct ddb_entry *ddb_entry;
 587
 588         /*
 589          * Don't want to do a relogin if connection
 590          * error is 0x1c.
 591          */
 592         rs->err_code = ((rs->conn_err & 0x00ff0000) >> 16);
 593         if (rs->err_code == 0x1c || rs->err_code == 0x06) {
 594                 DEBUG2(printk(
 595                                "scsi%ld: %s send target"
 596                                " completed or "
 597                                "access denied failure\n",
 598                                ha->host_no, __func__));
 599         } else {
 600                 /* We either have a device that is in
 601                  * the process of relogging in or a
 602                  * device that is waiting to be
 603                  * relogged in */
 604                 rs->halt_wait = 0;
 605
 606                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha,
 607                                                            rs->fw_ddb_index);
 608                 if (ddb_entry == NULL)
 609                         return QLA_ERROR;
 610
 611                 if (ddb_entry->dev_scan_wait_to_start_relogin != 0
 612                     && time_after_eq(jiffies,
 613                                      ddb_entry->
 614                                      dev_scan_wait_to_start_relogin))
 615                 {
 616                         ddb_entry->dev_scan_wait_to_start_relogin = 0;
 617                         qla4xxx_set_ddb_entry(ha, rs->fw_ddb_index, 0);
 618                 }
 619         }
 620         return QLA_SUCCESS;
 621 }
 622
 623 static int qla4_scan_for_relogin(struct scsi_qla_host *ha,
 624                                  struct qla4_relog_scan *rs)
 625 {
 626         int error;
 627
 628         /* scan for relogins
 629          * ----------------- */
 630         for (rs->fw_ddb_index = 0; rs->fw_ddb_index < MAX_DDB_ENTRIES;
 631              rs->fw_ddb_index = rs->next_fw_ddb_index) {
 632                 if (qla4xxx_get_fwddb_entry(ha, rs->fw_ddb_index, NULL, 0,
 633                                             NULL, &rs->next_fw_ddb_index,
 634                                             &rs->fw_ddb_device_state,
 635                                             &rs->conn_err, NULL, NULL)
 636                     == QLA_ERROR)
 637                         return QLA_ERROR;
 638
 639                 if (rs->fw_ddb_device_state == DDB_DS_LOGIN_IN_PROCESS)
 640                         rs->halt_wait = 0;
 641
 642                 if (rs->fw_ddb_device_state == DDB_DS_SESSION_FAILED ||
 643                     rs->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE) {
 644                         error = qla4_test_rdy(ha, rs);
 645                         if (error)
 646                                 return error;
 647                 }
 648
 649                 /* We know we've reached the last device when
 650                  * next_fw_ddb_index is 0 */
 651                 if (rs->next_fw_ddb_index == 0)
 652                         break;
 653         }
 654         return QLA_SUCCESS;
 655 }
 656
 657 /**
 658  * qla4xxx_devices_ready - wait for target devices to be logged in
 659  * @ha: pointer to adapter structure
 660  *
 661  * This routine waits up to ql4xdiscoverywait seconds
 662  * F/W database during driver load time.
 663  **/
 664 static int qla4xxx_devices_ready(struct scsi_qla_host *ha)
 665 {
 666         int error;
 667         unsigned long discovery_wtime;
 668         struct qla4_relog_scan rs;
 669
 670         discovery_wtime = jiffies + (ql4xdiscoverywait * HZ);
 671
 672         DEBUG(printk("Waiting (%d) for devices ...\n", ql4xdiscoverywait));
 673         do {
 674                 /* poll for AEN. */
 675                 qla4xxx_get_firmware_state(ha);
 676                 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) {
 677                         /* Set time-between-relogin timer */
 678                         qla4xxx_process_aen(ha, RELOGIN_DDB_CHANGED_AENS);
 679                 }
 680
 681                 /* if no relogins active or needed, halt discvery wait */
 682                 rs.halt_wait = 1;
 683
 684                 error = qla4_scan_for_relogin(ha, &rs);
 685
 686                 if (rs.halt_wait) {
 687                         DEBUG2(printk("scsi%ld: %s: Delay halted.  Devices "
 688                                       "Ready.\n", ha->host_no, __func__));
 689                         return QLA_SUCCESS;
 690                 }
 691
 692                 msleep(2000);
 693         } while (!time_after_eq(jiffies, discovery_wtime));
 694
 695         DEBUG3(qla4xxx_get_conn_event_log(ha));
 696
 697         return QLA_SUCCESS;
 698 }
 699
 700 static void qla4xxx_flush_AENS(struct scsi_qla_host *ha)
 701 {
 702         unsigned long wtime;
 703
 704         /* Flush the 0x8014 AEN from the firmware as a result of
 705          * Auto connect. We are basically doing get_firmware_ddb()
 706          * to determine whether we need to log back in or not.
 707          *  Trying to do a set ddb before we have processed 0x8014
 708          *  will result in another set_ddb() for the same ddb. In other
 709          *  words there will be stale entries in the aen_q.
 710          */
 711         wtime = jiffies + (2 * HZ);
 712         do {
 713                 if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS)
 714                         if (ha->firmware_state & (BIT_2 | BIT_0))
 715                                 return;
 716
 717                 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
 718                         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
 719
 720                 msleep(1000);
 721         } while (!time_after_eq(jiffies, wtime));
 722
 723 }
 724
 725 static int qla4xxx_initialize_ddb_list(struct scsi_qla_host *ha)
 726 {
 727         uint16_t fw_ddb_index;
 728         int status = QLA_SUCCESS;
 729
 730         /* free the ddb list if is not empty */
 731         if (!list_empty(&ha->ddb_list))
 732                 qla4xxx_free_ddb_list(ha);
 733
 734         for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES; fw_ddb_index++)
 735                 ha->fw_ddb_index_map[fw_ddb_index] =
 736                         (struct ddb_entry *)INVALID_ENTRY;
 737
 738         ha->tot_ddbs = 0;
 739
 740         qla4xxx_flush_AENS(ha);
 741
 742         /*
 743          * First perform device discovery for active
 744          * fw ddb indexes and build
 745          * ddb list.
 746          */
 747         if ((status = qla4xxx_build_ddb_list(ha)) == QLA_ERROR)
 748                 return status;
 749
 750         /* Wait for an AEN */
 751         qla4xxx_devices_ready(ha);
 752
 753         /*
 754          * Targets can come online after the inital discovery, so processing
 755          * the aens here will catch them.
 756          */
 757         if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
 758                 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
 759
 760         return status;
 761 }
 762
 763 /**
 764  * qla4xxx_update_ddb_list - update the driver ddb list
 765  * @ha: pointer to host adapter structure.
 766  *
 767  * This routine obtains device information from the F/W database after
 768  * firmware or adapter resets.  The device table is preserved.
 769  **/
 770 int qla4xxx_reinitialize_ddb_list(struct scsi_qla_host *ha)
 771 {
 772         int status = QLA_SUCCESS;
 773         struct ddb_entry *ddb_entry, *detemp;
 774
 775         /* Update the device information for all devices. */
 776         list_for_each_entry_safe(ddb_entry, detemp, &ha->ddb_list, list) {
 777                 qla4xxx_update_ddb_entry(ha, ddb_entry,
 778                                          ddb_entry->fw_ddb_index);
 779                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
 780                         atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
 781                         DEBUG2(printk ("scsi%ld: %s: ddb index [%d] marked "
 782                                        "ONLINE\n", ha->host_no, __func__,
 783                                        ddb_entry->fw_ddb_index));
 784                 } else if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
 785                         qla4xxx_mark_device_missing(ha, ddb_entry);
 786         }
 787         return status;
 788 }
 789
 790 /**
 791  * qla4xxx_relogin_device - re-establish session
 792  * @ha: Pointer to host adapter structure.
 793  * @ddb_entry: Pointer to device database entry
 794  *
 795  * This routine does a session relogin with the specified device.
 796  * The ddb entry must be assigned prior to making this call.
 797  **/
 798 int qla4xxx_relogin_device(struct scsi_qla_host *ha,
 799                            struct ddb_entry * ddb_entry)
 800 {
 801         uint16_t relogin_timer;
 802
 803         relogin_timer = max(ddb_entry->default_relogin_timeout,
 804                             (uint16_t)RELOGIN_TOV);
 805         atomic_set(&ddb_entry->relogin_timer, relogin_timer);
 806
 807         DEBUG2(printk("scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
 808                       ddb_entry->fw_ddb_index, relogin_timer));
 809
 810         qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index, 0);
 811
 812         return QLA_SUCCESS;
 813 }
 814
 815 static int qla4xxx_config_nvram(struct scsi_qla_host *ha)
 816 {
 817         unsigned long flags;
 818         union external_hw_config_reg extHwConfig;
 819
 820         DEBUG2(printk("scsi%ld: %s: Get EEProm parameters \n", ha->host_no,
 821                       __func__));
 822         if (ql4xxx_lock_flash(ha) != QLA_SUCCESS)
 823                 return (QLA_ERROR);
 824         if (ql4xxx_lock_nvram(ha) != QLA_SUCCESS) {
 825                 ql4xxx_unlock_flash(ha);
 826                 return (QLA_ERROR);
 827         }
 828
 829         /* Get EEPRom Parameters from NVRAM and validate */
 830         dev_info(&ha->pdev->dev, "Configuring NVRAM ...\n");
 831         if (qla4xxx_is_nvram_configuration_valid(ha) == QLA_SUCCESS) {
 832                 spin_lock_irqsave(&ha->hardware_lock, flags);
 833                 extHwConfig.Asuint32_t =
 834                         rd_nvram_word(ha, eeprom_ext_hw_conf_offset(ha));
 835                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 836         } else {
 837                 /*
 838                  * QLogic adapters should always have a valid NVRAM.
 839                  * If not valid, do not load.
 840                  */
 841                 dev_warn(&ha->pdev->dev,
 842                            "scsi%ld: %s: EEProm checksum invalid.  "
 843                            "Please update your EEPROM\n", ha->host_no,
 844                            __func__);
 845
 846                 /* set defaults */
 847                 if (is_qla4010(ha))
 848                         extHwConfig.Asuint32_t = 0x1912;
 849                 else if (is_qla4022(ha) | is_qla4032(ha))
 850                         extHwConfig.Asuint32_t = 0x0023;
 851         }
 852         DEBUG(printk("scsi%ld: %s: Setting extHwConfig to 0xFFFF%04x\n",
 853                      ha->host_no, __func__, extHwConfig.Asuint32_t));
 854
 855         spin_lock_irqsave(&ha->hardware_lock, flags);
 856         writel((0xFFFF << 16) | extHwConfig.Asuint32_t, isp_ext_hw_conf(ha));
 857         readl(isp_ext_hw_conf(ha));
 858         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 859
 860         ql4xxx_unlock_nvram(ha);
 861         ql4xxx_unlock_flash(ha);
 862
 863         return (QLA_SUCCESS);
 864 }
 865
 866 static void qla4x00_pci_config(struct scsi_qla_host *ha)
 867 {
 868         uint16_t w, mwi;
 869
 870         dev_info(&ha->pdev->dev, "Configuring PCI space...\n");
 871
 872         pci_set_master(ha->pdev);
 873         mwi = 0;
 874         if (pci_set_mwi(ha->pdev))
 875                 mwi = PCI_COMMAND_INVALIDATE;
 876         /*
 877          * We want to respect framework's setting of PCI configuration space
 878          * command register and also want to make sure that all bits of
 879          * interest to us are properly set in command register.
 880          */
 881         pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
 882         w |= mwi | (PCI_COMMAND_PARITY | PCI_COMMAND_SERR);
 883         w &= ~PCI_COMMAND_INTX_DISABLE;
 884         pci_write_config_word(ha->pdev, PCI_COMMAND, w);
 885 }
 886
 887 static int qla4xxx_start_firmware_from_flash(struct scsi_qla_host *ha)
 888 {
 889         int status = QLA_ERROR;
 890         uint32_t max_wait_time;
 891         unsigned long flags;
 892         uint32_t mbox_status;
 893
 894         dev_info(&ha->pdev->dev, "Starting firmware ...\n");
 895
 896         /*
 897          * Start firmware from flash ROM
 898          *
 899          * WORKAROUND: Stuff a non-constant value that the firmware can
 900          * use as a seed for a random number generator in MB7 prior to
 901          * setting BOOT_ENABLE.  Fixes problem where the TCP
 902          * connections use the same TCP ports after each reboot,
 903          * causing some connections to not get re-established.
 904          */
 905         DEBUG(printk("scsi%d: %s: Start firmware from flash ROM\n",
 906                      ha->host_no, __func__));
 907
 908         spin_lock_irqsave(&ha->hardware_lock, flags);
 909         writel(jiffies, &ha->reg->mailbox[7]);
 910         if (is_qla4022(ha) | is_qla4032(ha))
 911                 writel(set_rmask(NVR_WRITE_ENABLE),
 912                        &ha->reg->u1.isp4022.nvram);
 913
 914         writel(set_rmask(CSR_BOOT_ENABLE), &ha->reg->ctrl_status);
 915         readl(&ha->reg->ctrl_status);
 916         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 917
 918         /* Wait for firmware to come UP. */
 919         max_wait_time = FIRMWARE_UP_TOV * 4;
 920         do {
 921                 uint32_t ctrl_status;
 922
 923                 spin_lock_irqsave(&ha->hardware_lock, flags);
 924                 ctrl_status = readw(&ha->reg->ctrl_status);
 925                 mbox_status = readw(&ha->reg->mailbox[0]);
 926                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 927
 928                 if (ctrl_status & set_rmask(CSR_SCSI_PROCESSOR_INTR))
 929                         break;
 930                 if (mbox_status == MBOX_STS_COMMAND_COMPLETE)
 931                         break;
 932
 933                 DEBUG2(printk("scsi%ld: %s: Waiting for boot firmware to "
 934                               "complete... ctrl_sts=0x%x, remaining=%d\n",
 935                               ha->host_no, __func__, ctrl_status,
 936                               max_wait_time));
 937
 938                 msleep(250);
 939         } while ((max_wait_time--));
 940
 941         if (mbox_status == MBOX_STS_COMMAND_COMPLETE) {
 942                 DEBUG(printk("scsi%ld: %s: Firmware has started\n",
 943                              ha->host_no, __func__));
 944
 945                 spin_lock_irqsave(&ha->hardware_lock, flags);
 946                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
 947                        &ha->reg->ctrl_status);
 948                 readl(&ha->reg->ctrl_status);
 949                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 950
 951                 status = QLA_SUCCESS;
 952         } else {
 953                 printk(KERN_INFO "scsi%ld: %s: Boot firmware failed "
 954                        "-  mbox status 0x%x\n", ha->host_no, __func__,
 955                        mbox_status);
 956                 status = QLA_ERROR;
 957         }
 958         return status;
 959 }
 960
 961 int ql4xxx_lock_drvr_wait(struct scsi_qla_host *ha)
 962 {
 963 #define QL4_LOCK_DRVR_WAIT      30
 964 #define QL4_LOCK_DRVR_SLEEP     1
 965
 966         int drvr_wait = QL4_LOCK_DRVR_WAIT;
 967         while (drvr_wait) {
 968                 if (ql4xxx_lock_drvr(ha) == 0) {
 969                         ssleep(QL4_LOCK_DRVR_SLEEP);
 970                         if (drvr_wait) {
 971                                 DEBUG2(printk("scsi%ld: %s: Waiting for "
 972                                               "Global Init Semaphore(%d)...n",
 973                                               ha->host_no,
 974                                               __func__, drvr_wait));
 975                         }
 976                         drvr_wait -= QL4_LOCK_DRVR_SLEEP;
 977                 } else {
 978                         DEBUG2(printk("scsi%ld: %s: Global Init Semaphore "
 979                                       "acquired.n", ha->host_no, __func__));
 980                         return QLA_SUCCESS;
 981                 }
 982         }
 983         return QLA_ERROR;
 984 }
 985
 986 /**
 987  * qla4xxx_start_firmware - starts qla4xxx firmware
 988  * @ha: Pointer to host adapter structure.
 989  *
 990  * This routine performs the neccessary steps to start the firmware for
 991  * the QLA4010 adapter.
 992  **/
 993 static int qla4xxx_start_firmware(struct scsi_qla_host *ha)
 994 {
 995         unsigned long flags = 0;
 996         uint32_t mbox_status;
 997         int status = QLA_ERROR;
 998         int soft_reset = 1;
 999         int config_chip = 0;
1000
1001         if (is_qla4022(ha) | is_qla4032(ha))
1002                 ql4xxx_set_mac_number(ha);
1003
1004         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
1005                 return QLA_ERROR;
1006
1007         spin_lock_irqsave(&ha->hardware_lock, flags);
1008
1009         DEBUG2(printk("scsi%ld: %s: port_ctrl   = 0x%08X\n", ha->host_no,
1010                       __func__, readw(isp_port_ctrl(ha))));
1011         DEBUG(printk("scsi%ld: %s: port_status = 0x%08X\n", ha->host_no,
1012                      __func__, readw(isp_port_status(ha))));
1013
1014         /* Is Hardware already initialized? */
1015         if ((readw(isp_port_ctrl(ha)) & 0x8000) != 0) {
1016                 DEBUG(printk("scsi%ld: %s: Hardware has already been "
1017                              "initialized\n", ha->host_no, __func__));
1018
1019                 /* Receive firmware boot acknowledgement */
1020                 mbox_status = readw(&ha->reg->mailbox[0]);
1021
1022                 DEBUG2(printk("scsi%ld: %s: H/W Config complete - mbox[0]= "
1023                               "0x%x\n", ha->host_no, __func__, mbox_status));
1024
1025                 /* Is firmware already booted? */
1026                 if (mbox_status == 0) {
1027                         /* F/W not running, must be config by net driver */
1028                         config_chip = 1;
1029                         soft_reset = 0;
1030                 } else {
1031                         writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
1032                                &ha->reg->ctrl_status);
1033                         readl(&ha->reg->ctrl_status);
1034                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1035                         if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
1036                                 DEBUG2(printk("scsi%ld: %s: Get firmware "
1037                                               "state -- state = 0x%x\n",
1038                                               ha->host_no,
1039                                               __func__, ha->firmware_state));
1040                                 /* F/W is running */
1041                                 if (ha->firmware_state &
1042                                     FW_STATE_CONFIG_WAIT) {
1043                                         DEBUG2(printk("scsi%ld: %s: Firmware "
1044                                                       "in known state -- "
1045                                                       "config and "
1046                                                       "boot, state = 0x%x\n",
1047                                                       ha->host_no, __func__,
1048                                                       ha->firmware_state));
1049                                         config_chip = 1;
1050                                         soft_reset = 0;
1051                                 }
1052                         } else {
1053                                 DEBUG2(printk("scsi%ld: %s: Firmware in "
1054                                               "unknown state -- resetting,"
1055                                               " state = "
1056                                               "0x%x\n", ha->host_no, __func__,
1057                                               ha->firmware_state));
1058                         }
1059                         spin_lock_irqsave(&ha->hardware_lock, flags);
1060                 }
1061         } else {
1062                 DEBUG(printk("scsi%ld: %s: H/W initialization hasn't been "
1063                              "started - resetting\n", ha->host_no, __func__));
1064         }
1065         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1066
1067         DEBUG(printk("scsi%ld: %s: Flags soft_rest=%d, config= %d\n ",
1068                      ha->host_no, __func__, soft_reset, config_chip));
1069         if (soft_reset) {
1070                 DEBUG(printk("scsi%ld: %s: Issue Soft Reset\n", ha->host_no,
1071                              __func__));
1072                 status = qla4xxx_soft_reset(ha);
1073                 if (status == QLA_ERROR) {
1074                         DEBUG(printk("scsi%d: %s: Soft Reset failed!\n",
1075                                      ha->host_no, __func__));
1076                         ql4xxx_unlock_drvr(ha);
1077                         return QLA_ERROR;
1078                 }
1079                 config_chip = 1;
1080
1081                 /* Reset clears the semaphore, so aquire again */
1082                 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
1083                         return QLA_ERROR;
1084         }
1085
1086         if (config_chip) {
1087                 if ((status = qla4xxx_config_nvram(ha)) == QLA_SUCCESS)
1088                         status = qla4xxx_start_firmware_from_flash(ha);
1089         }
1090
1091         ql4xxx_unlock_drvr(ha);
1092         if (status == QLA_SUCCESS) {
1093                 qla4xxx_get_fw_version(ha);
1094                 if (test_and_clear_bit(AF_GET_CRASH_RECORD, &ha->flags))
1095                         qla4xxx_get_crash_record(ha);
1096         } else {
1097                 DEBUG(printk("scsi%ld: %s: Firmware has NOT started\n",
1098                              ha->host_no, __func__));
1099         }
1100         return status;
1101 }
1102
1103
1104 /**
1105  * qla4xxx_initialize_adapter - initiailizes hba
1106  * @ha: Pointer to host adapter structure.
1107  * @renew_ddb_list: Indicates what to do with the adapter's ddb list
1108  *      after adapter recovery has completed.
1109  *      0=preserve ddb list, 1=destroy and rebuild ddb list
1110  *
1111  * This routine parforms all of the steps necessary to initialize the adapter.
1112  *
1113  **/
1114 int qla4xxx_initialize_adapter(struct scsi_qla_host *ha,
1115                                uint8_t renew_ddb_list)
1116 {
1117         int status = QLA_ERROR;
1118         int8_t ip_address[IP_ADDR_LEN] = {0} ;
1119
1120         ha->eeprom_cmd_data = 0;
1121
1122         qla4x00_pci_config(ha);
1123
1124         qla4xxx_disable_intrs(ha);
1125
1126         /* Initialize the Host adapter request/response queues and firmware */
1127         if (qla4xxx_start_firmware(ha) == QLA_ERROR)
1128                 return status;
1129
1130         if (qla4xxx_validate_mac_address(ha) == QLA_ERROR)
1131                 return status;
1132
1133         if (qla4xxx_init_local_data(ha) == QLA_ERROR)
1134                 return status;
1135
1136         status = qla4xxx_init_firmware(ha);
1137         if (status == QLA_ERROR)
1138                 return status;
1139
1140         /*
1141          * FW is waiting to get an IP address from DHCP server: Skip building
1142          * the ddb_list and wait for DHCP lease acquired aen to come in
1143          * followed by 0x8014 aen" to trigger the tgt discovery process.
1144          */
1145         if (ha->firmware_state & FW_STATE_DHCP_IN_PROGRESS)
1146                 return status;
1147
1148         /* Skip device discovery if ip and subnet is zero */
1149         if (memcmp(ha->ip_address, ip_address, IP_ADDR_LEN) == 0 ||
1150             memcmp(ha->subnet_mask, ip_address, IP_ADDR_LEN) == 0)
1151                 return status;
1152
1153         if (renew_ddb_list == PRESERVE_DDB_LIST) {
1154                 /*
1155                  * We want to preserve lun states (i.e. suspended, etc.)
1156                  * for recovery initiated by the driver.  So just update
1157                  * the device states for the existing ddb_list.
1158                  */
1159                 qla4xxx_reinitialize_ddb_list(ha);
1160         } else if (renew_ddb_list == REBUILD_DDB_LIST) {
1161                 /*
1162                  * We want to build the ddb_list from scratch during
1163                  * driver initialization and recovery initiated by the
1164                  * INT_HBA_RESET IOCTL.
1165                  */
1166                 status = qla4xxx_initialize_ddb_list(ha);
1167                 if (status == QLA_ERROR) {
1168                         DEBUG2(printk("%s(%ld) Error occurred during build"
1169                                       "ddb list\n", __func__, ha->host_no));
1170                         goto exit_init_hba;
1171                 }
1172
1173         }
1174         if (!ha->tot_ddbs) {
1175                 DEBUG2(printk("scsi%ld: Failed to initialize devices or none "
1176                               "present in Firmware device database\n",
1177                               ha->host_no));
1178         }
1179
1180  exit_init_hba:
1181         return status;
1182
1183 }
1184
1185 /**
1186  * qla4xxx_add_device_dynamically - ddb addition due to an AEN
1187  * @ha:  Pointer to host adapter structure.
1188  * @fw_ddb_index:  Firmware's device database index
1189  *
1190  * This routine processes adds a device as a result of an 8014h AEN.
1191  **/
1192 static void qla4xxx_add_device_dynamically(struct scsi_qla_host *ha,
1193                                            uint32_t fw_ddb_index)
1194 {
1195         struct ddb_entry * ddb_entry;
1196
1197         /* First allocate a device structure */
1198         ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index);
1199         if (ddb_entry == NULL) {
1200                 DEBUG2(printk(KERN_WARNING
1201                               "scsi%ld: Unable to allocate memory to add "
1202                               "fw_ddb_index %d\n", ha->host_no, fw_ddb_index));
1203                 return;
1204         }
1205
1206         if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
1207                                     QLA_ERROR) {
1208                 ha->fw_ddb_index_map[fw_ddb_index] =
1209                                         (struct ddb_entry *)INVALID_ENTRY;
1210                 DEBUG2(printk(KERN_WARNING
1211                               "scsi%ld: failed to add new device at index "
1212                               "[%d]\n Unable to retrieve fw ddb entry\n",
1213                               ha->host_no, fw_ddb_index));
1214                 qla4xxx_free_ddb(ha, ddb_entry);
1215                 return;
1216         }
1217
1218         if (qla4xxx_add_sess(ddb_entry)) {
1219                 DEBUG2(printk(KERN_WARNING
1220                               "scsi%ld: failed to add new device at index "
1221                               "[%d]\n Unable to add connection and session\n",
1222                               ha->host_no, fw_ddb_index));
1223                 qla4xxx_free_ddb(ha, ddb_entry);
1224         }
1225 }
1226
1227 /**
1228  * qla4xxx_process_ddb_changed - process ddb state change
1229  * @ha - Pointer to host adapter structure.
1230  * @fw_ddb_index - Firmware's device database index
1231  * @state - Device state
1232  *
1233  * This routine processes a Decive Database Changed AEN Event.
1234  **/
1235 int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha,
1236                                 uint32_t fw_ddb_index, uint32_t state)
1237 {
1238         struct ddb_entry * ddb_entry;
1239         uint32_t old_fw_ddb_device_state;
1240
1241         /* check for out of range index */
1242         if (fw_ddb_index >= MAX_DDB_ENTRIES)
1243                 return QLA_ERROR;
1244
1245         /* Get the corresponging ddb entry */
1246         ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
1247         /* Device does not currently exist in our database. */
1248         if (ddb_entry == NULL) {
1249                 if (state == DDB_DS_SESSION_ACTIVE)
1250                         qla4xxx_add_device_dynamically(ha, fw_ddb_index);
1251                 return QLA_SUCCESS;
1252         }
1253
1254         /* Device already exists in our database. */
1255         old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
1256         DEBUG2(printk("scsi%ld: %s DDB - old state= 0x%x, new state=0x%x for "
1257                       "index [%d]\n", ha->host_no, __func__,
1258                       ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
1259         if (old_fw_ddb_device_state == state &&
1260             state == DDB_DS_SESSION_ACTIVE) {
1261                 /* Do nothing, state not changed. */
1262                 return QLA_SUCCESS;
1263         }
1264
1265         ddb_entry->fw_ddb_device_state = state;
1266         /* Device is back online. */
1267         if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
1268                 atomic_set(&ddb_entry->port_down_timer,
1269                            ha->port_down_retry_count);
1270                 atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
1271                 atomic_set(&ddb_entry->relogin_retry_count, 0);
1272                 atomic_set(&ddb_entry->relogin_timer, 0);
1273                 clear_bit(DF_RELOGIN, &ddb_entry->flags);
1274                 clear_bit(DF_NO_RELOGIN, &ddb_entry->flags);
1275                 iscsi_if_create_session_done(ddb_entry->conn);
1276                 /*
1277                  * Change the lun state to READY in case the lun TIMEOUT before
1278                  * the device came back.
1279                  */
1280         } else {
1281                 /* Device went away, try to relogin. */
1282                 /* Mark device missing */
1283                 if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
1284                         qla4xxx_mark_device_missing(ha, ddb_entry);
1285                 /*
1286                  * Relogin if device state changed to a not active state.
1287                  * However, do not relogin if this aen is a result of an IOCTL
1288                  * logout (DF_NO_RELOGIN) or if this is a discovered device.
1289                  */
1290                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_FAILED &&
1291                     !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
1292                     !test_bit(DF_NO_RELOGIN, &ddb_entry->flags) &&
1293                     !test_bit(DF_ISNS_DISCOVERED, &ddb_entry->flags)) {
1294                         /*
1295                          * This triggers a relogin.  After the relogin_timer
1296                          * expires, the relogin gets scheduled.  We must wait a
1297                          * minimum amount of time since receiving an 0x8014 AEN
1298                          * with failed device_state or a logout response before
1299                          * we can issue another relogin.
1300                          */
1301                         /* Firmware padds this timeout: (time2wait +1).
1302                          * Driver retry to login should be longer than F/W.
1303                          * Otherwise F/W will fail
1304                          * set_ddb() mbx cmd with 0x4005 since it still
1305                          * counting down its time2wait.
1306                          */
1307                         atomic_set(&ddb_entry->relogin_timer, 0);
1308                         atomic_set(&ddb_entry->retry_relogin_timer,
1309                                    ddb_entry->default_time2wait + 4);
1310                 }
1311         }
1312
1313         return QLA_SUCCESS;
1314 }
1315