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                 msleep(1000);
 263         }                       /* end of for */
 264
 265         if (timeout_count <= 0)
 266                 DEBUG2(printk("scsi%ld: %s: FW Initialization timed out!\n",
 267                               ha->host_no, __func__));
 268
 269         if (ha->firmware_state & FW_STATE_DHCP_IN_PROGRESS)  {
 270                 DEBUG2(printk("scsi%ld: %s: FW is reporting its waiting to"
 271                               " grab an IP address from DHCP server\n",
 272                               ha->host_no, __func__));
 273                 ready = 1;
 274         }
 275
 276         return ready;
 277 }
 278
 279 /**
 280  * qla4xxx_init_firmware - initializes the firmware.
 281  * @ha: pointer to host adapter structure.
 282  *
 283  **/
 284 static int qla4xxx_init_firmware(struct scsi_qla_host *ha)
 285 {
 286         int status = QLA_ERROR;
 287
 288         dev_info(&ha->pdev->dev, "Initializing firmware..\n");
 289         if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR) {
 290                 DEBUG2(printk("scsi%ld: %s: Failed to initialize firmware "
 291                               "control block\n", ha->host_no, __func__));
 292                 return status;
 293         }
 294         if (!qla4xxx_fw_ready(ha))
 295                 return status;
 296
 297         set_bit(AF_ONLINE, &ha->flags);
 298         return qla4xxx_get_firmware_status(ha);
 299 }
 300
 301 static struct ddb_entry* qla4xxx_get_ddb_entry(struct scsi_qla_host *ha,
 302                                                uint32_t fw_ddb_index)
 303 {
 304         struct dev_db_entry *fw_ddb_entry = NULL;
 305         dma_addr_t fw_ddb_entry_dma;
 306         struct ddb_entry *ddb_entry = NULL;
 307         int found = 0;
 308         uint32_t device_state;
 309
 310         /* Make sure the dma buffer is valid */
 311         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
 312                                           sizeof(*fw_ddb_entry),
 313                                           &fw_ddb_entry_dma, GFP_KERNEL);
 314         if (fw_ddb_entry == NULL) {
 315                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
 316                               ha->host_no, __func__));
 317                 return NULL;
 318         }
 319
 320         if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
 321                                     fw_ddb_entry_dma, NULL, NULL,
 322                                     &device_state, NULL, NULL, NULL) ==
 323             QLA_ERROR) {
 324                 DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
 325                               "fw_ddb_index %d\n", ha->host_no, __func__,
 326                               fw_ddb_index));
 327                 return NULL;
 328         }
 329
 330         /* Allocate DDB if not already allocated. */
 331         DEBUG2(printk("scsi%ld: %s: Looking for ddb[%d]\n", ha->host_no,
 332                       __func__, fw_ddb_index));
 333         list_for_each_entry(ddb_entry, &ha->ddb_list, list) {
 334                 if (memcmp(ddb_entry->iscsi_name, fw_ddb_entry->iscsiName,
 335                            ISCSI_NAME_SIZE) == 0) {
 336                         found++;
 337                         break;
 338                 }
 339         }
 340
 341         if (!found) {
 342                 DEBUG2(printk("scsi%ld: %s: ddb[%d] not found - allocating "
 343                               "new ddb\n", ha->host_no, __func__,
 344                               fw_ddb_index));
 345                 ddb_entry = qla4xxx_alloc_ddb(ha, fw_ddb_index);
 346         }
 347
 348         /* if not found allocate new ddb */
 349         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
 350                           fw_ddb_entry_dma);
 351
 352         return ddb_entry;
 353 }
 354
 355 /**
 356  * qla4xxx_update_ddb_entry - update driver's internal ddb
 357  * @ha: pointer to host adapter structure.
 358  * @ddb_entry: pointer to device database structure to be filled
 359  * @fw_ddb_index: index of the ddb entry in fw ddb table
 360  *
 361  * This routine updates the driver's internal device database entry
 362  * with information retrieved from the firmware's device database
 363  * entry for the specified device. The ddb_entry->fw_ddb_index field
 364  * must be initialized prior to calling this routine
 365  *
 366  **/
 367 int qla4xxx_update_ddb_entry(struct scsi_qla_host *ha,
 368                              struct ddb_entry *ddb_entry,
 369                              uint32_t fw_ddb_index)
 370 {
 371         struct dev_db_entry *fw_ddb_entry = NULL;
 372         dma_addr_t fw_ddb_entry_dma;
 373         int status = QLA_ERROR;
 374
 375         if (ddb_entry == NULL) {
 376                 DEBUG2(printk("scsi%ld: %s: ddb_entry is NULL\n", ha->host_no,
 377                               __func__));
 378                 goto exit_update_ddb;
 379         }
 380
 381         /* Make sure the dma buffer is valid */
 382         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
 383                                           sizeof(*fw_ddb_entry),
 384                                           &fw_ddb_entry_dma, GFP_KERNEL);
 385         if (fw_ddb_entry == NULL) {
 386                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
 387                               ha->host_no, __func__));
 388
 389                 goto exit_update_ddb;
 390         }
 391
 392         if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
 393                                     fw_ddb_entry_dma, NULL, NULL,
 394                                     &ddb_entry->fw_ddb_device_state, NULL,
 395                                     &ddb_entry->tcp_source_port_num,
 396                                     &ddb_entry->connection_id) ==
 397             QLA_ERROR) {
 398                 DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
 399                               "fw_ddb_index %d\n", ha->host_no, __func__,
 400                               fw_ddb_index));
 401
 402                 goto exit_update_ddb;
 403         }
 404
 405         status = QLA_SUCCESS;
 406         ddb_entry->target_session_id = le16_to_cpu(fw_ddb_entry->TSID);
 407         ddb_entry->task_mgmt_timeout =
 408                 le16_to_cpu(fw_ddb_entry->taskMngmntTimeout);
 409         ddb_entry->CmdSn = 0;
 410         ddb_entry->exe_throttle = le16_to_cpu(fw_ddb_entry->exeThrottle);
 411         ddb_entry->default_relogin_timeout =
 412                 le16_to_cpu(fw_ddb_entry->taskMngmntTimeout);
 413         ddb_entry->default_time2wait = le16_to_cpu(fw_ddb_entry->minTime2Wait);
 414
 415         /* Update index in case it changed */
 416         ddb_entry->fw_ddb_index = fw_ddb_index;
 417         ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
 418
 419         ddb_entry->port = le16_to_cpu(fw_ddb_entry->portNumber);
 420         ddb_entry->tpgt = le32_to_cpu(fw_ddb_entry->TargetPortalGroup);
 421         memcpy(&ddb_entry->iscsi_name[0], &fw_ddb_entry->iscsiName[0],
 422                min(sizeof(ddb_entry->iscsi_name),
 423                    sizeof(fw_ddb_entry->iscsiName)));
 424         memcpy(&ddb_entry->ip_addr[0], &fw_ddb_entry->ipAddr[0],
 425                min(sizeof(ddb_entry->ip_addr), sizeof(fw_ddb_entry->ipAddr)));
 426
 427         DEBUG2(printk("scsi%ld: %s: ddb[%d] - State= %x status= %d.\n",
 428                       ha->host_no, __func__, fw_ddb_index,
 429                       ddb_entry->fw_ddb_device_state, status));
 430
 431  exit_update_ddb:
 432         if (fw_ddb_entry)
 433                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
 434                                   fw_ddb_entry, fw_ddb_entry_dma);
 435
 436         return status;
 437 }
 438
 439 /**
 440  * qla4xxx_alloc_ddb - allocate device database entry
 441  * @ha: Pointer to host adapter structure.
 442  * @fw_ddb_index: Firmware's device database index
 443  *
 444  * This routine allocates a ddb_entry, ititializes some values, and
 445  * inserts it into the ddb list.
 446  **/
 447 struct ddb_entry * qla4xxx_alloc_ddb(struct scsi_qla_host *ha,
 448                                      uint32_t fw_ddb_index)
 449 {
 450         struct ddb_entry *ddb_entry;
 451
 452         DEBUG2(printk("scsi%ld: %s: fw_ddb_index [%d]\n", ha->host_no,
 453                       __func__, fw_ddb_index));
 454
 455         ddb_entry = qla4xxx_alloc_sess(ha);
 456         if (ddb_entry == NULL) {
 457                 DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
 458                               "to add fw_ddb_index [%d]\n",
 459                               ha->host_no, __func__, fw_ddb_index));
 460                 return ddb_entry;
 461         }
 462
 463         ddb_entry->fw_ddb_index = fw_ddb_index;
 464         atomic_set(&ddb_entry->port_down_timer, ha->port_down_retry_count);
 465         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
 466         atomic_set(&ddb_entry->relogin_timer, 0);
 467         atomic_set(&ddb_entry->relogin_retry_count, 0);
 468         atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
 469         list_add_tail(&ddb_entry->list, &ha->ddb_list);
 470         ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
 471         ha->tot_ddbs++;
 472
 473         return ddb_entry;
 474 }
 475
 476 /**
 477  * qla4xxx_configure_ddbs - builds driver ddb list
 478  * @ha: Pointer to host adapter structure.
 479  *
 480  * This routine searches for all valid firmware ddb entries and builds
 481  * an internal ddb list. Ddbs that are considered valid are those with
 482  * a device state of SESSION_ACTIVE.
 483  **/
 484 static int qla4xxx_build_ddb_list(struct scsi_qla_host *ha)
 485 {
 486         int status = QLA_SUCCESS;
 487         uint32_t fw_ddb_index = 0;
 488         uint32_t next_fw_ddb_index = 0;
 489         uint32_t ddb_state;
 490         uint32_t conn_err, err_code;
 491         struct ddb_entry *ddb_entry;
 492
 493         dev_info(&ha->pdev->dev, "Initializing DDBs ...\n");
 494         for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES;
 495              fw_ddb_index = next_fw_ddb_index) {
 496                 /* First, let's see if a device exists here */
 497                 if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, NULL, 0, NULL,
 498                                             &next_fw_ddb_index, &ddb_state,
 499                                             &conn_err, NULL, NULL) ==
 500                     QLA_ERROR) {
 501                         DEBUG2(printk("scsi%ld: %s: get_ddb_entry, "
 502                                       "fw_ddb_index %d failed", ha->host_no,
 503                                       __func__, fw_ddb_index));
 504                         return QLA_ERROR;
 505                 }
 506
 507                 DEBUG2(printk("scsi%ld: %s: Getting DDB[%d] ddbstate=0x%x, "
 508                               "next_fw_ddb_index=%d.\n", ha->host_no, __func__,
 509                               fw_ddb_index, ddb_state, next_fw_ddb_index));
 510
 511                 /* Issue relogin, if necessary. */
 512                 if (ddb_state == DDB_DS_SESSION_FAILED ||
 513                     ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) {
 514                         /* Try and login to device */
 515                         DEBUG2(printk("scsi%ld: %s: Login to DDB[%d]\n",
 516                                       ha->host_no, __func__, fw_ddb_index));
 517                         err_code = ((conn_err & 0x00ff0000) >> 16);
 518                         if (err_code == 0x1c || err_code == 0x06) {
 519                                 DEBUG2(printk("scsi%ld: %s send target "
 520                                               "completed "
 521                                               "or access denied failure\n",
 522                                               ha->host_no, __func__));
 523                         } else
 524                                 qla4xxx_set_ddb_entry(ha, fw_ddb_index, 0);
 525                 }
 526
 527                 if (ddb_state != DDB_DS_SESSION_ACTIVE)
 528                         goto next_one;
 529                 /*
 530                  * if fw_ddb with session active state found,
 531                  * add to ddb_list
 532                  */
 533                 DEBUG2(printk("scsi%ld: %s: DDB[%d] added to list\n",
 534                               ha->host_no, __func__, fw_ddb_index));
 535
 536                 /* Add DDB to internal our ddb list. */
 537                 ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index);
 538                 if (ddb_entry == NULL) {
 539                         DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
 540                                       "for device at fw_ddb_index %d\n",
 541                                       ha->host_no, __func__, fw_ddb_index));
 542                         return QLA_ERROR;
 543                 }
 544                 /* Fill in the device structure */
 545                 if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
 546                     QLA_ERROR) {
 547                         ha->fw_ddb_index_map[fw_ddb_index] =
 548                                 (struct ddb_entry *)INVALID_ENTRY;
 549
 550
 551                         DEBUG2(printk("scsi%ld: %s: update_ddb_entry failed "
 552                                       "for fw_ddb_index %d.\n",
 553                                       ha->host_no, __func__, fw_ddb_index));
 554                         return QLA_ERROR;
 555                 }
 556
 557 next_one:
 558                 /* We know we've reached the last device when
 559                  * next_fw_ddb_index is 0 */
 560                 if (next_fw_ddb_index == 0)
 561                         break;
 562         }
 563
 564         dev_info(&ha->pdev->dev, "DDB list done..\n");
 565
 566         return status;
 567 }
 568
 569 struct qla4_relog_scan {
 570         int halt_wait;
 571         uint32_t conn_err;
 572         uint32_t err_code;
 573         uint32_t fw_ddb_index;
 574         uint32_t next_fw_ddb_index;
 575         uint32_t fw_ddb_device_state;
 576 };
 577
 578 static int qla4_test_rdy(struct scsi_qla_host *ha, struct qla4_relog_scan *rs)
 579 {
 580         struct ddb_entry *ddb_entry;
 581
 582         /*
 583          * Don't want to do a relogin if connection
 584          * error is 0x1c.
 585          */
 586         rs->err_code = ((rs->conn_err & 0x00ff0000) >> 16);
 587         if (rs->err_code == 0x1c || rs->err_code == 0x06) {
 588                 DEBUG2(printk(
 589                                "scsi%ld: %s send target"
 590                                " completed or "
 591                                "access denied failure\n",
 592                                ha->host_no, __func__));
 593         } else {
 594                 /* We either have a device that is in
 595                  * the process of relogging in or a
 596                  * device that is waiting to be
 597                  * relogged in */
 598                 rs->halt_wait = 0;
 599
 600                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha,
 601                                                            rs->fw_ddb_index);
 602                 if (ddb_entry == NULL)
 603                         return QLA_ERROR;
 604
 605                 if (ddb_entry->dev_scan_wait_to_start_relogin != 0
 606                     && time_after_eq(jiffies,
 607                                      ddb_entry->
 608                                      dev_scan_wait_to_start_relogin))
 609                 {
 610                         ddb_entry->dev_scan_wait_to_start_relogin = 0;
 611                         qla4xxx_set_ddb_entry(ha, rs->fw_ddb_index, 0);
 612                 }
 613         }
 614         return QLA_SUCCESS;
 615 }
 616
 617 static int qla4_scan_for_relogin(struct scsi_qla_host *ha,
 618                                  struct qla4_relog_scan *rs)
 619 {
 620         int error;
 621
 622         /* scan for relogins
 623          * ----------------- */
 624         for (rs->fw_ddb_index = 0; rs->fw_ddb_index < MAX_DDB_ENTRIES;
 625              rs->fw_ddb_index = rs->next_fw_ddb_index) {
 626                 if (qla4xxx_get_fwddb_entry(ha, rs->fw_ddb_index, NULL, 0,
 627                                             NULL, &rs->next_fw_ddb_index,
 628                                             &rs->fw_ddb_device_state,
 629                                             &rs->conn_err, NULL, NULL)
 630                     == QLA_ERROR)
 631                         return QLA_ERROR;
 632
 633                 if (rs->fw_ddb_device_state == DDB_DS_LOGIN_IN_PROCESS)
 634                         rs->halt_wait = 0;
 635
 636                 if (rs->fw_ddb_device_state == DDB_DS_SESSION_FAILED ||
 637                     rs->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE) {
 638                         error = qla4_test_rdy(ha, rs);
 639                         if (error)
 640                                 return error;
 641                 }
 642
 643                 /* We know we've reached the last device when
 644                  * next_fw_ddb_index is 0 */
 645                 if (rs->next_fw_ddb_index == 0)
 646                         break;
 647         }
 648         return QLA_SUCCESS;
 649 }
 650
 651 /**
 652  * qla4xxx_devices_ready - wait for target devices to be logged in
 653  * @ha: pointer to adapter structure
 654  *
 655  * This routine waits up to ql4xdiscoverywait seconds
 656  * F/W database during driver load time.
 657  **/
 658 static int qla4xxx_devices_ready(struct scsi_qla_host *ha)
 659 {
 660         int error;
 661         unsigned long discovery_wtime;
 662         struct qla4_relog_scan rs;
 663
 664         discovery_wtime = jiffies + (ql4xdiscoverywait * HZ);
 665
 666         DEBUG(printk("Waiting (%d) for devices ...\n", ql4xdiscoverywait));
 667         do {
 668                 /* poll for AEN. */
 669                 qla4xxx_get_firmware_state(ha);
 670                 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) {
 671                         /* Set time-between-relogin timer */
 672                         qla4xxx_process_aen(ha, RELOGIN_DDB_CHANGED_AENS);
 673                 }
 674
 675                 /* if no relogins active or needed, halt discvery wait */
 676                 rs.halt_wait = 1;
 677
 678                 error = qla4_scan_for_relogin(ha, &rs);
 679
 680                 if (rs.halt_wait) {
 681                         DEBUG2(printk("scsi%ld: %s: Delay halted.  Devices "
 682                                       "Ready.\n", ha->host_no, __func__));
 683                         return QLA_SUCCESS;
 684                 }
 685
 686                 msleep(2000);
 687         } while (!time_after_eq(jiffies, discovery_wtime));
 688
 689         DEBUG3(qla4xxx_get_conn_event_log(ha));
 690
 691         return QLA_SUCCESS;
 692 }
 693
 694 static void qla4xxx_flush_AENS(struct scsi_qla_host *ha)
 695 {
 696         unsigned long wtime;
 697
 698         /* Flush the 0x8014 AEN from the firmware as a result of
 699          * Auto connect. We are basically doing get_firmware_ddb()
 700          * to determine whether we need to log back in or not.
 701          *  Trying to do a set ddb before we have processed 0x8014
 702          *  will result in another set_ddb() for the same ddb. In other
 703          *  words there will be stale entries in the aen_q.
 704          */
 705         wtime = jiffies + (2 * HZ);
 706         do {
 707                 if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS)
 708                         if (ha->firmware_state & (BIT_2 | BIT_0))
 709                                 return;
 710
 711                 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
 712                         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
 713
 714                 msleep(1000);
 715         } while (!time_after_eq(jiffies, wtime));
 716
 717 }
 718
 719 static int qla4xxx_initialize_ddb_list(struct scsi_qla_host *ha)
 720 {
 721         uint16_t fw_ddb_index;
 722         int status = QLA_SUCCESS;
 723
 724         /* free the ddb list if is not empty */
 725         if (!list_empty(&ha->ddb_list))
 726                 qla4xxx_free_ddb_list(ha);
 727
 728         for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES; fw_ddb_index++)
 729                 ha->fw_ddb_index_map[fw_ddb_index] =
 730                         (struct ddb_entry *)INVALID_ENTRY;
 731
 732         ha->tot_ddbs = 0;
 733
 734         qla4xxx_flush_AENS(ha);
 735
 736         /*
 737          * First perform device discovery for active
 738          * fw ddb indexes and build
 739          * ddb list.
 740          */
 741         if ((status = qla4xxx_build_ddb_list(ha)) == QLA_ERROR)
 742                 return status;
 743
 744         /* Wait for an AEN */
 745         qla4xxx_devices_ready(ha);
 746
 747         /*
 748          * Targets can come online after the inital discovery, so processing
 749          * the aens here will catch them.
 750          */
 751         if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
 752                 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
 753
 754         return status;
 755 }
 756
 757 /**
 758  * qla4xxx_update_ddb_list - update the driver ddb list
 759  * @ha: pointer to host adapter structure.
 760  *
 761  * This routine obtains device information from the F/W database after
 762  * firmware or adapter resets.  The device table is preserved.
 763  **/
 764 int qla4xxx_reinitialize_ddb_list(struct scsi_qla_host *ha)
 765 {
 766         int status = QLA_SUCCESS;
 767         struct ddb_entry *ddb_entry, *detemp;
 768
 769         /* Update the device information for all devices. */
 770         list_for_each_entry_safe(ddb_entry, detemp, &ha->ddb_list, list) {
 771                 qla4xxx_update_ddb_entry(ha, ddb_entry,
 772                                          ddb_entry->fw_ddb_index);
 773                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
 774                         atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
 775                         DEBUG2(printk ("scsi%ld: %s: ddb index [%d] marked "
 776                                        "ONLINE\n", ha->host_no, __func__,
 777                                        ddb_entry->fw_ddb_index));
 778                 } else if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
 779                         qla4xxx_mark_device_missing(ha, ddb_entry);
 780         }
 781         return status;
 782 }
 783
 784 /**
 785  * qla4xxx_relogin_device - re-establish session
 786  * @ha: Pointer to host adapter structure.
 787  * @ddb_entry: Pointer to device database entry
 788  *
 789  * This routine does a session relogin with the specified device.
 790  * The ddb entry must be assigned prior to making this call.
 791  **/
 792 int qla4xxx_relogin_device(struct scsi_qla_host *ha,
 793                            struct ddb_entry * ddb_entry)
 794 {
 795         uint16_t relogin_timer;
 796
 797         relogin_timer = max(ddb_entry->default_relogin_timeout,
 798                             (uint16_t)RELOGIN_TOV);
 799         atomic_set(&ddb_entry->relogin_timer, relogin_timer);
 800
 801         DEBUG2(printk("scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
 802                       ddb_entry->fw_ddb_index, relogin_timer));
 803
 804         qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index, 0);
 805
 806         return QLA_SUCCESS;
 807 }
 808
 809 /**
 810  * qla4010_get_topcat_presence - check if it is QLA4040 TopCat Chip
 811  * @ha: Pointer to host adapter structure.
 812  *
 813  **/
 814 static int qla4010_get_topcat_presence(struct scsi_qla_host *ha)
 815 {
 816         unsigned long flags;
 817         uint16_t topcat;
 818
 819         if (ql4xxx_lock_nvram(ha) != QLA_SUCCESS)
 820                 return QLA_ERROR;
 821         spin_lock_irqsave(&ha->hardware_lock, flags);
 822         topcat = rd_nvram_word(ha, offsetof(struct eeprom_data,
 823                                             isp4010.topcat));
 824         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 825
 826         if ((topcat & TOPCAT_MASK) == TOPCAT_PRESENT)
 827                 set_bit(AF_TOPCAT_CHIP_PRESENT, &ha->flags);
 828         else
 829                 clear_bit(AF_TOPCAT_CHIP_PRESENT, &ha->flags);
 830         ql4xxx_unlock_nvram(ha);
 831         return QLA_SUCCESS;
 832 }
 833
 834
 835 static int qla4xxx_config_nvram(struct scsi_qla_host *ha)
 836 {
 837         unsigned long flags;
 838         union external_hw_config_reg extHwConfig;
 839
 840         DEBUG2(printk("scsi%ld: %s: Get EEProm parameters \n", ha->host_no,
 841                       __func__));
 842         if (ql4xxx_lock_flash(ha) != QLA_SUCCESS)
 843                 return (QLA_ERROR);
 844         if (ql4xxx_lock_nvram(ha) != QLA_SUCCESS) {
 845                 ql4xxx_unlock_flash(ha);
 846                 return (QLA_ERROR);
 847         }
 848
 849         /* Get EEPRom Parameters from NVRAM and validate */
 850         dev_info(&ha->pdev->dev, "Configuring NVRAM ...\n");
 851         if (qla4xxx_is_nvram_configuration_valid(ha) == QLA_SUCCESS) {
 852                 spin_lock_irqsave(&ha->hardware_lock, flags);
 853                 extHwConfig.Asuint32_t =
 854                         rd_nvram_word(ha, eeprom_ext_hw_conf_offset(ha));
 855                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 856         } else {
 857                 /*
 858                  * QLogic adapters should always have a valid NVRAM.
 859                  * If not valid, do not load.
 860                  */
 861                 dev_warn(&ha->pdev->dev,
 862                            "scsi%ld: %s: EEProm checksum invalid.  "
 863                            "Please update your EEPROM\n", ha->host_no,
 864                            __func__);
 865
 866                 /* set defaults */
 867                 if (is_qla4010(ha))
 868                         extHwConfig.Asuint32_t = 0x1912;
 869                 else if (is_qla4022(ha))
 870                         extHwConfig.Asuint32_t = 0x0023;
 871         }
 872         DEBUG(printk("scsi%ld: %s: Setting extHwConfig to 0xFFFF%04x\n",
 873                      ha->host_no, __func__, extHwConfig.Asuint32_t));
 874
 875         spin_lock_irqsave(&ha->hardware_lock, flags);
 876         writel((0xFFFF << 16) | extHwConfig.Asuint32_t, isp_ext_hw_conf(ha));
 877         readl(isp_ext_hw_conf(ha));
 878         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 879
 880         ql4xxx_unlock_nvram(ha);
 881         ql4xxx_unlock_flash(ha);
 882
 883         return (QLA_SUCCESS);
 884 }
 885
 886 static void qla4x00_pci_config(struct scsi_qla_host *ha)
 887 {
 888         uint16_t w, mwi;
 889
 890         dev_info(&ha->pdev->dev, "Configuring PCI space...\n");
 891
 892         pci_set_master(ha->pdev);
 893         mwi = 0;
 894         if (pci_set_mwi(ha->pdev))
 895                 mwi = PCI_COMMAND_INVALIDATE;
 896         /*
 897          * We want to respect framework's setting of PCI configuration space
 898          * command register and also want to make sure that all bits of
 899          * interest to us are properly set in command register.
 900          */
 901         pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
 902         w |= mwi | (PCI_COMMAND_PARITY | PCI_COMMAND_SERR);
 903         w &= ~PCI_COMMAND_INTX_DISABLE;
 904         pci_write_config_word(ha->pdev, PCI_COMMAND, w);
 905 }
 906
 907 static int qla4xxx_start_firmware_from_flash(struct scsi_qla_host *ha)
 908 {
 909         int status = QLA_ERROR;
 910         uint32_t max_wait_time;
 911         unsigned long flags;
 912         uint32_t mbox_status;
 913
 914         dev_info(&ha->pdev->dev, "Starting firmware ...\n");
 915
 916         /*
 917          * Start firmware from flash ROM
 918          *
 919          * WORKAROUND: Stuff a non-constant value that the firmware can
 920          * use as a seed for a random number generator in MB7 prior to
 921          * setting BOOT_ENABLE.  Fixes problem where the TCP
 922          * connections use the same TCP ports after each reboot,
 923          * causing some connections to not get re-established.
 924          */
 925         DEBUG(printk("scsi%d: %s: Start firmware from flash ROM\n",
 926                      ha->host_no, __func__));
 927
 928         spin_lock_irqsave(&ha->hardware_lock, flags);
 929         writel(jiffies, &ha->reg->mailbox[7]);
 930         if (is_qla4022(ha))
 931                 writel(set_rmask(NVR_WRITE_ENABLE),
 932                        &ha->reg->u1.isp4022.nvram);
 933
 934         writel(set_rmask(CSR_BOOT_ENABLE), &ha->reg->ctrl_status);
 935         readl(&ha->reg->ctrl_status);
 936         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 937
 938         /* Wait for firmware to come UP. */
 939         max_wait_time = FIRMWARE_UP_TOV * 4;
 940         do {
 941                 uint32_t ctrl_status;
 942
 943                 spin_lock_irqsave(&ha->hardware_lock, flags);
 944                 ctrl_status = readw(&ha->reg->ctrl_status);
 945                 mbox_status = readw(&ha->reg->mailbox[0]);
 946                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 947
 948                 if (ctrl_status & set_rmask(CSR_SCSI_PROCESSOR_INTR))
 949                         break;
 950                 if (mbox_status == MBOX_STS_COMMAND_COMPLETE)
 951                         break;
 952
 953                 DEBUG2(printk("scsi%ld: %s: Waiting for boot firmware to "
 954                               "complete... ctrl_sts=0x%x, remaining=%d\n",
 955                               ha->host_no, __func__, ctrl_status,
 956                               max_wait_time));
 957
 958                 msleep(250);
 959         } while ((max_wait_time--));
 960
 961         if (mbox_status == MBOX_STS_COMMAND_COMPLETE) {
 962                 DEBUG(printk("scsi%ld: %s: Firmware has started\n",
 963                              ha->host_no, __func__));
 964
 965                 spin_lock_irqsave(&ha->hardware_lock, flags);
 966                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
 967                        &ha->reg->ctrl_status);
 968                 readl(&ha->reg->ctrl_status);
 969                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 970
 971                 status = QLA_SUCCESS;
 972         } else {
 973                 printk(KERN_INFO "scsi%ld: %s: Boot firmware failed "
 974                        "-  mbox status 0x%x\n", ha->host_no, __func__,
 975                        mbox_status);
 976                 status = QLA_ERROR;
 977         }
 978         return status;
 979 }
 980
 981 static int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
 982 {
 983 #define QL4_LOCK_DRVR_WAIT      300
 984 #define QL4_LOCK_DRVR_SLEEP     100
 985
 986         int drvr_wait = QL4_LOCK_DRVR_WAIT;
 987         while (drvr_wait) {
 988                 if (ql4xxx_lock_drvr(a) == 0) {
 989                         msleep(QL4_LOCK_DRVR_SLEEP);
 990                         if (drvr_wait) {
 991                                 DEBUG2(printk("scsi%ld: %s: Waiting for "
 992                                               "Global Init Semaphore...n",
 993                                               a->host_no,
 994                                               __func__));
 995                         }
 996                         drvr_wait -= QL4_LOCK_DRVR_SLEEP;
 997                 } else {
 998                         DEBUG2(printk("scsi%ld: %s: Global Init Semaphore "
 999                                       "acquired.n", a->host_no, __func__));
1000                         return QLA_SUCCESS;
1001                 }
1002         }
1003         return QLA_ERROR;
1004 }
1005
1006 /**
1007  * qla4xxx_start_firmware - starts qla4xxx firmware
1008  * @ha: Pointer to host adapter structure.
1009  *
1010  * This routine performs the neccessary steps to start the firmware for
1011  * the QLA4010 adapter.
1012  **/
1013 static int qla4xxx_start_firmware(struct scsi_qla_host *ha)
1014 {
1015         unsigned long flags = 0;
1016         uint32_t mbox_status;
1017         int status = QLA_ERROR;
1018         int soft_reset = 1;
1019         int config_chip = 0;
1020
1021         if (is_qla4010(ha)){
1022                 if (qla4010_get_topcat_presence(ha) != QLA_SUCCESS)
1023                         return QLA_ERROR;
1024         }
1025
1026         if (is_qla4022(ha))
1027                 ql4xxx_set_mac_number(ha);
1028
1029         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
1030                 return QLA_ERROR;
1031
1032         spin_lock_irqsave(&ha->hardware_lock, flags);
1033
1034         DEBUG2(printk("scsi%ld: %s: port_ctrl   = 0x%08X\n", ha->host_no,
1035                       __func__, readw(isp_port_ctrl(ha))));
1036         DEBUG(printk("scsi%ld: %s: port_status = 0x%08X\n", ha->host_no,
1037                      __func__, readw(isp_port_status(ha))));
1038
1039         /* Is Hardware already initialized? */
1040         if ((readw(isp_port_ctrl(ha)) & 0x8000) != 0) {
1041                 DEBUG(printk("scsi%ld: %s: Hardware has already been "
1042                              "initialized\n", ha->host_no, __func__));
1043
1044                 /* Receive firmware boot acknowledgement */
1045                 mbox_status = readw(&ha->reg->mailbox[0]);
1046
1047                 DEBUG2(printk("scsi%ld: %s: H/W Config complete - mbox[0]= "
1048                               "0x%x\n", ha->host_no, __func__, mbox_status));
1049
1050                 /* Is firmware already booted? */
1051                 if (mbox_status == 0) {
1052                         /* F/W not running, must be config by net driver */
1053                         config_chip = 1;
1054                         soft_reset = 0;
1055                 } else {
1056                         writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
1057                                &ha->reg->ctrl_status);
1058                         readl(&ha->reg->ctrl_status);
1059                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1060                         if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
1061                                 DEBUG2(printk("scsi%ld: %s: Get firmware "
1062                                               "state -- state = 0x%x\n",
1063                                               ha->host_no,
1064                                               __func__, ha->firmware_state));
1065                                 /* F/W is running */
1066                                 if (ha->firmware_state &
1067                                     FW_STATE_CONFIG_WAIT) {
1068                                         DEBUG2(printk("scsi%ld: %s: Firmware "
1069                                                       "in known state -- "
1070                                                       "config and "
1071                                                       "boot, state = 0x%x\n",
1072                                                       ha->host_no, __func__,
1073                                                       ha->firmware_state));
1074                                         config_chip = 1;
1075                                         soft_reset = 0;
1076                                 }
1077                         } else {
1078                                 DEBUG2(printk("scsi%ld: %s: Firmware in "
1079                                               "unknown state -- resetting,"
1080                                               " state = "
1081                                               "0x%x\n", ha->host_no, __func__,
1082                                               ha->firmware_state));
1083                         }
1084                         spin_lock_irqsave(&ha->hardware_lock, flags);
1085                 }
1086         } else {
1087                 DEBUG(printk("scsi%ld: %s: H/W initialization hasn't been "
1088                              "started - resetting\n", ha->host_no, __func__));
1089         }
1090         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1091
1092         DEBUG(printk("scsi%ld: %s: Flags soft_rest=%d, config= %d\n ",
1093                      ha->host_no, __func__, soft_reset, config_chip));
1094         if (soft_reset) {
1095                 DEBUG(printk("scsi%ld: %s: Issue Soft Reset\n", ha->host_no,
1096                              __func__));
1097                 status = qla4xxx_soft_reset(ha);
1098                 if (status == QLA_ERROR) {
1099                         DEBUG(printk("scsi%d: %s: Soft Reset failed!\n",
1100                                      ha->host_no, __func__));
1101                         ql4xxx_unlock_drvr(ha);
1102                         return QLA_ERROR;
1103                 }
1104                 config_chip = 1;
1105
1106                 /* Reset clears the semaphore, so aquire again */
1107                 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
1108                         return QLA_ERROR;
1109         }
1110
1111         if (config_chip) {
1112                 if ((status = qla4xxx_config_nvram(ha)) == QLA_SUCCESS)
1113                         status = qla4xxx_start_firmware_from_flash(ha);
1114         }
1115
1116         ql4xxx_unlock_drvr(ha);
1117         if (status == QLA_SUCCESS) {
1118                 qla4xxx_get_fw_version(ha);
1119                 if (test_and_clear_bit(AF_GET_CRASH_RECORD, &ha->flags))
1120                         qla4xxx_get_crash_record(ha);
1121         } else {
1122                 DEBUG(printk("scsi%ld: %s: Firmware has NOT started\n",
1123                              ha->host_no, __func__));
1124         }
1125         return status;
1126 }
1127
1128
1129 /**
1130  * qla4xxx_initialize_adapter - initiailizes hba
1131  * @ha: Pointer to host adapter structure.
1132  * @renew_ddb_list: Indicates what to do with the adapter's ddb list
1133  *      after adapter recovery has completed.
1134  *      0=preserve ddb list, 1=destroy and rebuild ddb list
1135  *
1136  * This routine parforms all of the steps necessary to initialize the adapter.
1137  *
1138  **/
1139 int qla4xxx_initialize_adapter(struct scsi_qla_host *ha,
1140                                uint8_t renew_ddb_list)
1141 {
1142         int status = QLA_ERROR;
1143         int8_t ip_address[IP_ADDR_LEN] = {0} ;
1144
1145         ha->eeprom_cmd_data = 0;
1146
1147         qla4x00_pci_config(ha);
1148
1149         qla4xxx_disable_intrs(ha);
1150
1151         /* Initialize the Host adapter request/response queues and firmware */
1152         if (qla4xxx_start_firmware(ha) == QLA_ERROR)
1153                 return status;
1154
1155         if (qla4xxx_validate_mac_address(ha) == QLA_ERROR)
1156                 return status;
1157
1158         if (qla4xxx_init_local_data(ha) == QLA_ERROR)
1159                 return status;
1160
1161         status = qla4xxx_init_firmware(ha);
1162         if (status == QLA_ERROR)
1163                 return status;
1164
1165         /*
1166          * FW is waiting to get an IP address from DHCP server: Skip building
1167          * the ddb_list and wait for DHCP lease acquired aen to come in
1168          * followed by 0x8014 aen" to trigger the tgt discovery process.
1169          */
1170         if (ha->firmware_state & FW_STATE_DHCP_IN_PROGRESS)
1171                 return status;
1172
1173         /* Skip device discovery if ip and subnet is zero */
1174         if (memcmp(ha->ip_address, ip_address, IP_ADDR_LEN) == 0 ||
1175             memcmp(ha->subnet_mask, ip_address, IP_ADDR_LEN) == 0)
1176                 return status;
1177
1178         if (renew_ddb_list == PRESERVE_DDB_LIST) {
1179                 /*
1180                  * We want to preserve lun states (i.e. suspended, etc.)
1181                  * for recovery initiated by the driver.  So just update
1182                  * the device states for the existing ddb_list.
1183                  */
1184                 qla4xxx_reinitialize_ddb_list(ha);
1185         } else if (renew_ddb_list == REBUILD_DDB_LIST) {
1186                 /*
1187                  * We want to build the ddb_list from scratch during
1188                  * driver initialization and recovery initiated by the
1189                  * INT_HBA_RESET IOCTL.
1190                  */
1191                 status = qla4xxx_initialize_ddb_list(ha);
1192                 if (status == QLA_ERROR) {
1193                         DEBUG2(printk("%s(%ld) Error occurred during build"
1194                                       "ddb list\n", __func__, ha->host_no));
1195                         goto exit_init_hba;
1196                 }
1197
1198         }
1199         if (!ha->tot_ddbs) {
1200                 DEBUG2(printk("scsi%ld: Failed to initialize devices or none "
1201                               "present in Firmware device database\n",
1202                               ha->host_no));
1203         }
1204
1205  exit_init_hba:
1206         return status;
1207
1208 }
1209
1210 /**
1211  * qla4xxx_add_device_dynamically - ddb addition due to an AEN
1212  * @ha:  Pointer to host adapter structure.
1213  * @fw_ddb_index:  Firmware's device database index
1214  *
1215  * This routine processes adds a device as a result of an 8014h AEN.
1216  **/
1217 static void qla4xxx_add_device_dynamically(struct scsi_qla_host *ha,
1218                                            uint32_t fw_ddb_index)
1219 {
1220         struct ddb_entry * ddb_entry;
1221
1222         /* First allocate a device structure */
1223         ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index);
1224         if (ddb_entry == NULL) {
1225                 DEBUG2(printk(KERN_WARNING
1226                               "scsi%ld: Unable to allocate memory to add "
1227                               "fw_ddb_index %d\n", ha->host_no, fw_ddb_index));
1228                 return;
1229         }
1230
1231         if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
1232                                     QLA_ERROR) {
1233                 ha->fw_ddb_index_map[fw_ddb_index] =
1234                                         (struct ddb_entry *)INVALID_ENTRY;
1235                 DEBUG2(printk(KERN_WARNING
1236                               "scsi%ld: failed to add new device at index "
1237                               "[%d]\n Unable to retrieve fw ddb entry\n",
1238                               ha->host_no, fw_ddb_index));
1239                 qla4xxx_free_ddb(ha, ddb_entry);
1240                 return;
1241         }
1242
1243         if (qla4xxx_add_sess(ddb_entry)) {
1244                 DEBUG2(printk(KERN_WARNING
1245                               "scsi%ld: failed to add new device at index "
1246                               "[%d]\n Unable to add connection and session\n",
1247                               ha->host_no, fw_ddb_index));
1248                 qla4xxx_free_ddb(ha, ddb_entry);
1249         }
1250 }
1251
1252 /**
1253  * qla4xxx_process_ddb_changed - process ddb state change
1254  * @ha - Pointer to host adapter structure.
1255  * @fw_ddb_index - Firmware's device database index
1256  * @state - Device state
1257  *
1258  * This routine processes a Decive Database Changed AEN Event.
1259  **/
1260 int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha,
1261                                 uint32_t fw_ddb_index, uint32_t state)
1262 {
1263         struct ddb_entry * ddb_entry;
1264         uint32_t old_fw_ddb_device_state;
1265
1266         /* check for out of range index */
1267         if (fw_ddb_index >= MAX_DDB_ENTRIES)
1268                 return QLA_ERROR;
1269
1270         /* Get the corresponging ddb entry */
1271         ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
1272         /* Device does not currently exist in our database. */
1273         if (ddb_entry == NULL) {
1274                 if (state == DDB_DS_SESSION_ACTIVE)
1275                         qla4xxx_add_device_dynamically(ha, fw_ddb_index);
1276                 return QLA_SUCCESS;
1277         }
1278
1279         /* Device already exists in our database. */
1280         old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
1281         DEBUG2(printk("scsi%ld: %s DDB - old state= 0x%x, new state=0x%x for "
1282                       "index [%d]\n", ha->host_no, __func__,
1283                       ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
1284         if (old_fw_ddb_device_state == state &&
1285             state == DDB_DS_SESSION_ACTIVE) {
1286                 /* Do nothing, state not changed. */
1287                 return QLA_SUCCESS;
1288         }
1289
1290         ddb_entry->fw_ddb_device_state = state;
1291         /* Device is back online. */
1292         if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
1293                 atomic_set(&ddb_entry->port_down_timer,
1294                            ha->port_down_retry_count);
1295                 atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
1296                 atomic_set(&ddb_entry->relogin_retry_count, 0);
1297                 atomic_set(&ddb_entry->relogin_timer, 0);
1298                 clear_bit(DF_RELOGIN, &ddb_entry->flags);
1299                 clear_bit(DF_NO_RELOGIN, &ddb_entry->flags);
1300                 iscsi_if_create_session_done(ddb_entry->conn);
1301                 /*
1302                  * Change the lun state to READY in case the lun TIMEOUT before
1303                  * the device came back.
1304                  */
1305         } else {
1306                 /* Device went away, try to relogin. */
1307                 /* Mark device missing */
1308                 if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
1309                         qla4xxx_mark_device_missing(ha, ddb_entry);
1310                 /*
1311                  * Relogin if device state changed to a not active state.
1312                  * However, do not relogin if this aen is a result of an IOCTL
1313                  * logout (DF_NO_RELOGIN) or if this is a discovered device.
1314                  */
1315                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_FAILED &&
1316                     !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
1317                     !test_bit(DF_NO_RELOGIN, &ddb_entry->flags) &&
1318                     !test_bit(DF_ISNS_DISCOVERED, &ddb_entry->flags)) {
1319                         /*
1320                          * This triggers a relogin.  After the relogin_timer
1321                          * expires, the relogin gets scheduled.  We must wait a
1322                          * minimum amount of time since receiving an 0x8014 AEN
1323                          * with failed device_state or a logout response before
1324                          * we can issue another relogin.
1325                          */
1326                         /* Firmware padds this timeout: (time2wait +1).
1327                          * Driver retry to login should be longer than F/W.
1328                          * Otherwise F/W will fail
1329                          * set_ddb() mbx cmd with 0x4005 since it still
1330                          * counting down its time2wait.
1331                          */
1332                         atomic_set(&ddb_entry->relogin_timer, 0);
1333                         atomic_set(&ddb_entry->retry_relogin_timer,
1334                                    ddb_entry->default_time2wait + 4);
1335                 }
1336         }
1337
1338         return QLA_SUCCESS;
1339 }
1340