git.oblomov.eu Git - linux-2.6/blob - 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 #include "ql4_glbl.h"
  10 #include "ql4_dbg.h"
  11 #include "ql4_inline.h"
  12
  13 static struct ddb_entry * qla4xxx_alloc_ddb(struct scsi_qla_host *ha,
  14                                             uint32_t fw_ddb_index);
  15
  16 static void ql4xxx_set_mac_number(struct scsi_qla_host *ha)
  17 {
  18         uint32_t value;
  19         uint8_t func_number;
  20         unsigned long flags;
  21
  22         /* Get the function number */
  23         spin_lock_irqsave(&ha->hardware_lock, flags);
  24         value = readw(&ha->reg->ctrl_status);
  25         spin_unlock_irqrestore(&ha->hardware_lock, flags);
  26
  27         func_number = (uint8_t) ((value >> 4) & 0x30);
  28         switch (value & ISP_CONTROL_FN_MASK) {
  29         case ISP_CONTROL_FN0_SCSI:
  30                 ha->mac_index = 1;
  31                 break;
  32         case ISP_CONTROL_FN1_SCSI:
  33                 ha->mac_index = 3;
  34                 break;
  35         default:
  36                 DEBUG2(printk("scsi%ld: %s: Invalid function number, "
  37                               "ispControlStatus = 0x%x\n", ha->host_no,
  38                               __func__, value));
  39                 break;
  40         }
  41         DEBUG2(printk("scsi%ld: %s: mac_index %d.\n", ha->host_no, __func__,
  42                       ha->mac_index));
  43 }
  44
  45 /**
  46  * qla4xxx_free_ddb - deallocate ddb
  47  * @ha: pointer to host adapter structure.
  48  * @ddb_entry: pointer to device database entry
  49  *
  50  * This routine deallocates and unlinks the specified ddb_entry from the
  51  * adapter's
  52  **/
  53 static void qla4xxx_free_ddb(struct scsi_qla_host *ha,
  54                              struct ddb_entry *ddb_entry)
  55 {
  56         /* Remove device entry from list */
  57         list_del_init(&ddb_entry->list);
  58
  59         /* Remove device pointer from index mapping arrays */
  60         ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] =
  61                 (struct ddb_entry *) INVALID_ENTRY;
  62         ha->tot_ddbs--;
  63
  64         /* Free memory and scsi-ml struct for device entry */
  65         qla4xxx_destroy_sess(ddb_entry);
  66 }
  67
  68 /**
  69  * qla4xxx_free_ddb_list - deallocate all ddbs
  70  * @ha: pointer to host adapter structure.
  71  *
  72  * This routine deallocates and removes all devices on the sppecified adapter.
  73  **/
  74 void qla4xxx_free_ddb_list(struct scsi_qla_host *ha)
  75 {
  76         struct list_head *ptr;
  77         struct ddb_entry *ddb_entry;
  78
  79         while (!list_empty(&ha->ddb_list)) {
  80                 ptr = ha->ddb_list.next;
  81                 /* Free memory for device entry and remove */
  82                 ddb_entry = list_entry(ptr, struct ddb_entry, list);
  83                 qla4xxx_free_ddb(ha, ddb_entry);
  84         }
  85 }
  86
  87 /**
  88  * qla4xxx_init_rings - initialize hw queues
  89  * @ha: pointer to host adapter structure.
  90  *
  91  * This routine initializes the internal queues for the specified adapter.
  92  * The QLA4010 requires us to restart the queues at index 0.
  93  * The QLA4000 doesn't care, so just default to QLA4010's requirement.
  94  **/
  95 int qla4xxx_init_rings(struct scsi_qla_host *ha)
  96 {
  97         unsigned long flags = 0;
  98
  99         /* Initialize request queue. */
 100         spin_lock_irqsave(&ha->hardware_lock, flags);
 101         ha->request_out = 0;
 102         ha->request_in = 0;
 103         ha->request_ptr = &ha->request_ring[ha->request_in];
 104         ha->req_q_count = REQUEST_QUEUE_DEPTH;
 105
 106         /* Initialize response queue. */
 107         ha->response_in = 0;
 108         ha->response_out = 0;
 109         ha->response_ptr = &ha->response_ring[ha->response_out];
 110
 111         /*
 112          * Initialize DMA Shadow registers.  The firmware is really supposed to
 113          * take care of this, but on some uniprocessor systems, the shadow
 114          * registers aren't cleared-- causing the interrupt_handler to think
 115          * there are responses to be processed when there aren't.
 116          */
 117         ha->shadow_regs->req_q_out = __constant_cpu_to_le32(0);
 118         ha->shadow_regs->rsp_q_in = __constant_cpu_to_le32(0);
 119         wmb();
 120
 121         writel(0, &ha->reg->req_q_in);
 122         writel(0, &ha->reg->rsp_q_out);
 123         readl(&ha->reg->rsp_q_out);
 124
 125         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 126
 127         return QLA_SUCCESS;
 128 }
 129
 130 /**
 131  * qla4xxx_validate_mac_address - validate adapter MAC address(es)
 132  * @ha: pointer to host adapter structure.
 133  *
 134  **/
 135 static int qla4xxx_validate_mac_address(struct scsi_qla_host *ha)
 136 {
 137         struct flash_sys_info *sys_info;
 138         dma_addr_t sys_info_dma;
 139         int status = QLA_ERROR;
 140
 141         sys_info = dma_alloc_coherent(&ha->pdev->dev, sizeof(*sys_info),
 142                                       &sys_info_dma, GFP_KERNEL);
 143         if (sys_info == NULL) {
 144                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
 145                               ha->host_no, __func__));
 146
 147                 goto exit_validate_mac_no_free;
 148         }
 149         memset(sys_info, 0, sizeof(*sys_info));
 150
 151         /* Get flash sys info */
 152         if (qla4xxx_get_flash(ha, sys_info_dma, FLASH_OFFSET_SYS_INFO,
 153                               sizeof(*sys_info)) != QLA_SUCCESS) {
 154                 DEBUG2(printk("scsi%ld: %s: get_flash FLASH_OFFSET_SYS_INFO "
 155                               "failed\n", ha->host_no, __func__));
 156
 157                 goto exit_validate_mac;
 158         }
 159
 160         /* Save M.A.C. address & serial_number */
 161         memcpy(ha->my_mac, &sys_info->physAddr[0].address[0],
 162                min(sizeof(ha->my_mac),
 163                    sizeof(sys_info->physAddr[0].address)));
 164         memcpy(ha->serial_number, &sys_info->acSerialNumber,
 165                min(sizeof(ha->serial_number),
 166                    sizeof(sys_info->acSerialNumber)));
 167
 168         status = QLA_SUCCESS;
 169
 170  exit_validate_mac:
 171         dma_free_coherent(&ha->pdev->dev, sizeof(*sys_info), sys_info,
 172                           sys_info_dma);
 173
 174  exit_validate_mac_no_free:
 175         return status;
 176 }
 177
 178 /**
 179  * qla4xxx_init_local_data - initialize adapter specific local data
 180  * @ha: pointer to host adapter structure.
 181  *
 182  **/
 183 static int qla4xxx_init_local_data(struct scsi_qla_host *ha)
 184 {
 185         /* Initilize aen queue */
 186         ha->aen_q_count = MAX_AEN_ENTRIES;
 187
 188         return qla4xxx_get_firmware_status(ha);
 189 }
 190
 191 static int qla4xxx_fw_ready(struct scsi_qla_host *ha)
 192 {
 193         uint32_t timeout_count;
 194         int ready = 0;
 195
 196         DEBUG2(dev_info(&ha->pdev->dev, "Waiting for Firmware Ready..\n"));
 197         for (timeout_count = ADAPTER_INIT_TOV; timeout_count > 0;
 198              timeout_count--) {
 199                 if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
 200                         qla4xxx_get_dhcp_ip_address(ha);
 201
 202                 /* Get firmware state. */
 203                 if (qla4xxx_get_firmware_state(ha) != QLA_SUCCESS) {
 204                         DEBUG2(printk("scsi%ld: %s: unable to get firmware "
 205                                       "state\n", ha->host_no, __func__));
 206                         break;
 207
 208                 }
 209
 210                 if (ha->firmware_state & FW_STATE_ERROR) {
 211                         DEBUG2(printk("scsi%ld: %s: an unrecoverable error has"
 212                                       " occurred\n", ha->host_no, __func__));
 213                         break;
 214
 215                 }
 216                 if (ha->firmware_state & FW_STATE_CONFIG_WAIT) {
 217                         /*
 218                          * The firmware has not yet been issued an Initialize
 219                          * Firmware command, so issue it now.
 220                          */
 221                         if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR)
 222                                 break;
 223
 224                         /* Go back and test for ready state - no wait. */
 225                         continue;
 226                 }
 227
 228                 if (ha->firmware_state == FW_STATE_READY) {
 229                         DEBUG2(dev_info(&ha->pdev->dev, "Firmware Ready..\n"));
 230                         /* The firmware is ready to process SCSI commands. */
 231                         DEBUG2(dev_info(&ha->pdev->dev,
 232                                           "scsi%ld: %s: MEDIA TYPE - %s\n",
 233                                           ha->host_no,
 234                                           __func__, (ha->addl_fw_state &
 235                                                      FW_ADDSTATE_OPTICAL_MEDIA)
 236                                           != 0 ? "OPTICAL" : "COPPER"));
 237                         DEBUG2(dev_info(&ha->pdev->dev,
 238                                           "scsi%ld: %s: DHCP STATE Enabled "
 239                                           "%s\n",
 240                                           ha->host_no, __func__,
 241                                           (ha->addl_fw_state &
 242                                            FW_ADDSTATE_DHCP_ENABLED) != 0 ?
 243                                           "YES" : "NO"));
 244                         DEBUG2(dev_info(&ha->pdev->dev,
 245                                           "scsi%ld: %s: LINK %s\n",
 246                                           ha->host_no, __func__,
 247                                           (ha->addl_fw_state &
 248                                            FW_ADDSTATE_LINK_UP) != 0 ?
 249                                           "UP" : "DOWN"));
 250                         DEBUG2(dev_info(&ha->pdev->dev,
 251                                           "scsi%ld: %s: iSNS Service "
 252                                           "Started %s\n",
 253                                           ha->host_no, __func__,
 254                                           (ha->addl_fw_state &
 255                                            FW_ADDSTATE_ISNS_SVC_ENABLED) != 0 ?
 256                                           "YES" : "NO"));
 257
 258                         ready = 1;
 259                         break;
 260                 }
 261                 DEBUG2(printk("scsi%ld: %s: waiting on fw, state=%x:%x - "
 262                               "seconds expired= %d\n", ha->host_no, __func__,
 263                               ha->firmware_state, ha->addl_fw_state,
 264                               timeout_count));
 265                 if (is_qla4032(ha) &&
 266                         !(ha->addl_fw_state & FW_ADDSTATE_LINK_UP) &&
 267                         (timeout_count < ADAPTER_INIT_TOV - 5)) {
 268                         break;
 269                 }
 270
 271                 msleep(1000);
 272         }                       /* end of for */
 273
 274         if (timeout_count == 0)
 275                 DEBUG2(printk("scsi%ld: %s: FW Initialization timed out!\n",
 276                               ha->host_no, __func__));
 277
 278         if (ha->firmware_state & FW_STATE_DHCP_IN_PROGRESS)  {
 279                 DEBUG2(printk("scsi%ld: %s: FW is reporting its waiting to"
 280                               " grab an IP address from DHCP server\n",
 281                               ha->host_no, __func__));
 282                 ready = 1;
 283         }
 284
 285         return ready;
 286 }
 287
 288 /**
 289  * qla4xxx_init_firmware - initializes the firmware.
 290  * @ha: pointer to host adapter structure.
 291  *
 292  **/
 293 static int qla4xxx_init_firmware(struct scsi_qla_host *ha)
 294 {
 295         int status = QLA_ERROR;
 296
 297         dev_info(&ha->pdev->dev, "Initializing firmware..\n");
 298         if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR) {
 299                 DEBUG2(printk("scsi%ld: %s: Failed to initialize firmware "
 300                               "control block\n", ha->host_no, __func__));
 301                 return status;
 302         }
 303         if (!qla4xxx_fw_ready(ha))
 304                 return status;
 305
 306         return qla4xxx_get_firmware_status(ha);
 307 }
 308
 309 static struct ddb_entry* qla4xxx_get_ddb_entry(struct scsi_qla_host *ha,
 310                                                 uint32_t fw_ddb_index,
 311                                                 uint32_t *new_tgt)
 312 {
 313         struct dev_db_entry *fw_ddb_entry = NULL;
 314         dma_addr_t fw_ddb_entry_dma;
 315         struct ddb_entry *ddb_entry = NULL;
 316         int found = 0;
 317         uint32_t device_state;
 318
 319         *new_tgt = 0;
 320         /* Make sure the dma buffer is valid */
 321         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
 322                                           sizeof(*fw_ddb_entry),
 323                                           &fw_ddb_entry_dma, GFP_KERNEL);
 324         if (fw_ddb_entry == NULL) {
 325                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
 326                               ha->host_no, __func__));
 327                 return NULL;
 328         }
 329
 330         if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
 331                                     fw_ddb_entry_dma, NULL, NULL,
 332                                     &device_state, NULL, NULL, NULL) ==
 333             QLA_ERROR) {
 334                 DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
 335                               "fw_ddb_index %d\n", ha->host_no, __func__,
 336                               fw_ddb_index));
 337                 return NULL;
 338         }
 339
 340         /* Allocate DDB if not already allocated. */
 341         DEBUG2(printk("scsi%ld: %s: Looking for ddb[%d]\n", ha->host_no,
 342                       __func__, fw_ddb_index));
 343         list_for_each_entry(ddb_entry, &ha->ddb_list, list) {
 344                 if (memcmp(ddb_entry->iscsi_name, fw_ddb_entry->iscsi_name,
 345                            ISCSI_NAME_SIZE) == 0) {
 346                         found++;
 347                         break;
 348                 }
 349         }
 350
 351         if (!found) {
 352                 DEBUG2(printk("scsi%ld: %s: ddb[%d] not found - allocating "
 353                               "new ddb\n", ha->host_no, __func__,
 354                               fw_ddb_index));
 355                 *new_tgt = 1;
 356                 ddb_entry = qla4xxx_alloc_ddb(ha, fw_ddb_index);
 357         }
 358
 359         /* if not found allocate new ddb */
 360         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
 361                           fw_ddb_entry_dma);
 362
 363         return ddb_entry;
 364 }
 365
 366 /**
 367  * qla4xxx_update_ddb_entry - update driver's internal ddb
 368  * @ha: pointer to host adapter structure.
 369  * @ddb_entry: pointer to device database structure to be filled
 370  * @fw_ddb_index: index of the ddb entry in fw ddb table
 371  *
 372  * This routine updates the driver's internal device database entry
 373  * with information retrieved from the firmware's device database
 374  * entry for the specified device. The ddb_entry->fw_ddb_index field
 375  * must be initialized prior to calling this routine
 376  *
 377  **/
 378 static int qla4xxx_update_ddb_entry(struct scsi_qla_host *ha,
 379                                     struct ddb_entry *ddb_entry,
 380                                     uint32_t fw_ddb_index)
 381 {
 382         struct dev_db_entry *fw_ddb_entry = NULL;
 383         dma_addr_t fw_ddb_entry_dma;
 384         int status = QLA_ERROR;
 385
 386         if (ddb_entry == NULL) {
 387                 DEBUG2(printk("scsi%ld: %s: ddb_entry is NULL\n", ha->host_no,
 388                               __func__));
 389                 goto exit_update_ddb;
 390         }
 391
 392         /* Make sure the dma buffer is valid */
 393         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
 394                                           sizeof(*fw_ddb_entry),
 395                                           &fw_ddb_entry_dma, GFP_KERNEL);
 396         if (fw_ddb_entry == NULL) {
 397                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
 398                               ha->host_no, __func__));
 399
 400                 goto exit_update_ddb;
 401         }
 402
 403         if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
 404                                     fw_ddb_entry_dma, NULL, NULL,
 405                                     &ddb_entry->fw_ddb_device_state, NULL,
 406                                     &ddb_entry->tcp_source_port_num,
 407                                     &ddb_entry->connection_id) ==
 408             QLA_ERROR) {
 409                 DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
 410                               "fw_ddb_index %d\n", ha->host_no, __func__,
 411                               fw_ddb_index));
 412
 413                 goto exit_update_ddb;
 414         }
 415
 416         status = QLA_SUCCESS;
 417         ddb_entry->target_session_id = le16_to_cpu(fw_ddb_entry->tsid);
 418         ddb_entry->task_mgmt_timeout =
 419                 le16_to_cpu(fw_ddb_entry->def_timeout);
 420         ddb_entry->CmdSn = 0;
 421         ddb_entry->exe_throttle = le16_to_cpu(fw_ddb_entry->exec_throttle);
 422         ddb_entry->default_relogin_timeout =
 423                 le16_to_cpu(fw_ddb_entry->def_timeout);
 424         ddb_entry->default_time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
 425
 426         /* Update index in case it changed */
 427         ddb_entry->fw_ddb_index = fw_ddb_index;
 428         ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
 429
 430         ddb_entry->port = le16_to_cpu(fw_ddb_entry->port);
 431         ddb_entry->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
 432         memcpy(&ddb_entry->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
 433                min(sizeof(ddb_entry->iscsi_name),
 434                    sizeof(fw_ddb_entry->iscsi_name)));
 435         memcpy(&ddb_entry->ip_addr[0], &fw_ddb_entry->ip_addr[0],
 436                min(sizeof(ddb_entry->ip_addr), sizeof(fw_ddb_entry->ip_addr)));
 437
 438         DEBUG2(printk("scsi%ld: %s: ddb[%d] - State= %x status= %d.\n",
 439                       ha->host_no, __func__, fw_ddb_index,
 440                       ddb_entry->fw_ddb_device_state, status));
 441
 442  exit_update_ddb:
 443         if (fw_ddb_entry)
 444                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
 445                                   fw_ddb_entry, fw_ddb_entry_dma);
 446
 447         return status;
 448 }
 449
 450 /**
 451  * qla4xxx_alloc_ddb - allocate device database entry
 452  * @ha: Pointer to host adapter structure.
 453  * @fw_ddb_index: Firmware's device database index
 454  *
 455  * This routine allocates a ddb_entry, ititializes some values, and
 456  * inserts it into the ddb list.
 457  **/
 458 static struct ddb_entry * qla4xxx_alloc_ddb(struct scsi_qla_host *ha,
 459                                             uint32_t fw_ddb_index)
 460 {
 461         struct ddb_entry *ddb_entry;
 462
 463         DEBUG2(printk("scsi%ld: %s: fw_ddb_index [%d]\n", ha->host_no,
 464                       __func__, fw_ddb_index));
 465
 466         ddb_entry = qla4xxx_alloc_sess(ha);
 467         if (ddb_entry == NULL) {
 468                 DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
 469                               "to add fw_ddb_index [%d]\n",
 470                               ha->host_no, __func__, fw_ddb_index));
 471                 return ddb_entry;
 472         }
 473
 474         ddb_entry->fw_ddb_index = fw_ddb_index;
 475         atomic_set(&ddb_entry->port_down_timer, ha->port_down_retry_count);
 476         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
 477         atomic_set(&ddb_entry->relogin_timer, 0);
 478         atomic_set(&ddb_entry->relogin_retry_count, 0);
 479         atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
 480         list_add_tail(&ddb_entry->list, &ha->ddb_list);
 481         ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
 482         ha->tot_ddbs++;
 483
 484         return ddb_entry;
 485 }
 486
 487 /**
 488  * qla4xxx_configure_ddbs - builds driver ddb list
 489  * @ha: Pointer to host adapter structure.
 490  *
 491  * This routine searches for all valid firmware ddb entries and builds
 492  * an internal ddb list. Ddbs that are considered valid are those with
 493  * a device state of SESSION_ACTIVE.
 494  **/
 495 static int qla4xxx_build_ddb_list(struct scsi_qla_host *ha)
 496 {
 497         int status = QLA_SUCCESS;
 498         uint32_t fw_ddb_index = 0;
 499         uint32_t next_fw_ddb_index = 0;
 500         uint32_t ddb_state;
 501         uint32_t conn_err, err_code;
 502         struct ddb_entry *ddb_entry;
 503         uint32_t new_tgt;
 504
 505         dev_info(&ha->pdev->dev, "Initializing DDBs ...\n");
 506         for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES;
 507              fw_ddb_index = next_fw_ddb_index) {
 508                 /* First, let's see if a device exists here */
 509                 if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, NULL, 0, NULL,
 510                                             &next_fw_ddb_index, &ddb_state,
 511                                             &conn_err, NULL, NULL) ==
 512                     QLA_ERROR) {
 513                         DEBUG2(printk("scsi%ld: %s: get_ddb_entry, "
 514                                       "fw_ddb_index %d failed", ha->host_no,
 515                                       __func__, fw_ddb_index));
 516                         return QLA_ERROR;
 517                 }
 518
 519                 DEBUG2(printk("scsi%ld: %s: Getting DDB[%d] ddbstate=0x%x, "
 520                               "next_fw_ddb_index=%d.\n", ha->host_no, __func__,
 521                               fw_ddb_index, ddb_state, next_fw_ddb_index));
 522
 523                 /* Issue relogin, if necessary. */
 524                 if (ddb_state == DDB_DS_SESSION_FAILED ||
 525                     ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) {
 526                         /* Try and login to device */
 527                         DEBUG2(printk("scsi%ld: %s: Login to DDB[%d]\n",
 528                                       ha->host_no, __func__, fw_ddb_index));
 529                         err_code = ((conn_err & 0x00ff0000) >> 16);
 530                         if (err_code == 0x1c || err_code == 0x06) {
 531                                 DEBUG2(printk("scsi%ld: %s send target "
 532                                               "completed "
 533                                               "or access denied failure\n",
 534                                               ha->host_no, __func__));
 535                         } else {
 536                                 qla4xxx_set_ddb_entry(ha, fw_ddb_index, 0);
 537                                 if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index,
 538                                         NULL, 0, NULL, &next_fw_ddb_index,
 539                                         &ddb_state, &conn_err, NULL, NULL)
 540                                         == QLA_ERROR) {
 541                                         DEBUG2(printk("scsi%ld: %s:"
 542                                                 "get_ddb_entry %d failed\n",
 543                                                 ha->host_no,
 544                                                 __func__, fw_ddb_index));
 545                                         return QLA_ERROR;
 546                                 }
 547                         }
 548                 }
 549
 550                 if (ddb_state != DDB_DS_SESSION_ACTIVE)
 551                         goto next_one;
 552                 /*
 553                  * if fw_ddb with session active state found,
 554                  * add to ddb_list
 555                  */
 556                 DEBUG2(printk("scsi%ld: %s: DDB[%d] added to list\n",
 557                               ha->host_no, __func__, fw_ddb_index));
 558
 559                 /* Add DDB to internal our ddb list. */
 560                 ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index, &new_tgt);
 561                 if (ddb_entry == NULL) {
 562                         DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
 563                                       "for device at fw_ddb_index %d\n",
 564                                       ha->host_no, __func__, fw_ddb_index));
 565                         return QLA_ERROR;
 566                 }
 567                 /* Fill in the device structure */
 568                 if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
 569                     QLA_ERROR) {
 570                         ha->fw_ddb_index_map[fw_ddb_index] =
 571                                 (struct ddb_entry *)INVALID_ENTRY;
 572
 573
 574                         DEBUG2(printk("scsi%ld: %s: update_ddb_entry failed "
 575                                       "for fw_ddb_index %d.\n",
 576                                       ha->host_no, __func__, fw_ddb_index));
 577                         return QLA_ERROR;
 578                 }
 579
 580 next_one:
 581                 /* We know we've reached the last device when
 582                  * next_fw_ddb_index is 0 */
 583                 if (next_fw_ddb_index == 0)
 584                         break;
 585         }
 586
 587         dev_info(&ha->pdev->dev, "DDB list done..\n");
 588
 589         return status;
 590 }
 591
 592 struct qla4_relog_scan {
 593         int halt_wait;
 594         uint32_t conn_err;
 595         uint32_t err_code;
 596         uint32_t fw_ddb_index;
 597         uint32_t next_fw_ddb_index;
 598         uint32_t fw_ddb_device_state;
 599 };
 600
 601 static int qla4_test_rdy(struct scsi_qla_host *ha, struct qla4_relog_scan *rs)
 602 {
 603         struct ddb_entry *ddb_entry;
 604
 605         /*
 606          * Don't want to do a relogin if connection
 607          * error is 0x1c.
 608          */
 609         rs->err_code = ((rs->conn_err & 0x00ff0000) >> 16);
 610         if (rs->err_code == 0x1c || rs->err_code == 0x06) {
 611                 DEBUG2(printk(
 612                                "scsi%ld: %s send target"
 613                                " completed or "
 614                                "access denied failure\n",
 615                                ha->host_no, __func__));
 616         } else {
 617                 /* We either have a device that is in
 618                  * the process of relogging in or a
 619                  * device that is waiting to be
 620                  * relogged in */
 621                 rs->halt_wait = 0;
 622
 623                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha,
 624                                                            rs->fw_ddb_index);
 625                 if (ddb_entry == NULL)
 626                         return QLA_ERROR;
 627
 628                 if (ddb_entry->dev_scan_wait_to_start_relogin != 0
 629                     && time_after_eq(jiffies,
 630                                      ddb_entry->
 631                                      dev_scan_wait_to_start_relogin))
 632                 {
 633                         ddb_entry->dev_scan_wait_to_start_relogin = 0;
 634                         qla4xxx_set_ddb_entry(ha, rs->fw_ddb_index, 0);
 635                 }
 636         }
 637         return QLA_SUCCESS;
 638 }
 639
 640 static int qla4_scan_for_relogin(struct scsi_qla_host *ha,
 641                                  struct qla4_relog_scan *rs)
 642 {
 643         int error;
 644
 645         /* scan for relogins
 646          * ----------------- */
 647         for (rs->fw_ddb_index = 0; rs->fw_ddb_index < MAX_DDB_ENTRIES;
 648              rs->fw_ddb_index = rs->next_fw_ddb_index) {
 649                 if (qla4xxx_get_fwddb_entry(ha, rs->fw_ddb_index, NULL, 0,
 650                                             NULL, &rs->next_fw_ddb_index,
 651                                             &rs->fw_ddb_device_state,
 652                                             &rs->conn_err, NULL, NULL)
 653                     == QLA_ERROR)
 654                         return QLA_ERROR;
 655
 656                 if (rs->fw_ddb_device_state == DDB_DS_LOGIN_IN_PROCESS)
 657                         rs->halt_wait = 0;
 658
 659                 if (rs->fw_ddb_device_state == DDB_DS_SESSION_FAILED ||
 660                     rs->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE) {
 661                         error = qla4_test_rdy(ha, rs);
 662                         if (error)
 663                                 return error;
 664                 }
 665
 666                 /* We know we've reached the last device when
 667                  * next_fw_ddb_index is 0 */
 668                 if (rs->next_fw_ddb_index == 0)
 669                         break;
 670         }
 671         return QLA_SUCCESS;
 672 }
 673
 674 /**
 675  * qla4xxx_devices_ready - wait for target devices to be logged in
 676  * @ha: pointer to adapter structure
 677  *
 678  * This routine waits up to ql4xdiscoverywait seconds
 679  * F/W database during driver load time.
 680  **/
 681 static int qla4xxx_devices_ready(struct scsi_qla_host *ha)
 682 {
 683         int error;
 684         unsigned long discovery_wtime;
 685         struct qla4_relog_scan rs;
 686
 687         discovery_wtime = jiffies + (ql4xdiscoverywait * HZ);
 688
 689         DEBUG(printk("Waiting (%d) for devices ...\n", ql4xdiscoverywait));
 690         do {
 691                 /* poll for AEN. */
 692                 qla4xxx_get_firmware_state(ha);
 693                 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) {
 694                         /* Set time-between-relogin timer */
 695                         qla4xxx_process_aen(ha, RELOGIN_DDB_CHANGED_AENS);
 696                 }
 697
 698                 /* if no relogins active or needed, halt discvery wait */
 699                 rs.halt_wait = 1;
 700
 701                 error = qla4_scan_for_relogin(ha, &rs);
 702
 703                 if (rs.halt_wait) {
 704                         DEBUG2(printk("scsi%ld: %s: Delay halted.  Devices "
 705                                       "Ready.\n", ha->host_no, __func__));
 706                         return QLA_SUCCESS;
 707                 }
 708
 709                 msleep(2000);
 710         } while (!time_after_eq(jiffies, discovery_wtime));
 711
 712         DEBUG3(qla4xxx_get_conn_event_log(ha));
 713
 714         return QLA_SUCCESS;
 715 }
 716
 717 static void qla4xxx_flush_AENS(struct scsi_qla_host *ha)
 718 {
 719         unsigned long wtime;
 720
 721         /* Flush the 0x8014 AEN from the firmware as a result of
 722          * Auto connect. We are basically doing get_firmware_ddb()
 723          * to determine whether we need to log back in or not.
 724          *  Trying to do a set ddb before we have processed 0x8014
 725          *  will result in another set_ddb() for the same ddb. In other
 726          *  words there will be stale entries in the aen_q.
 727          */
 728         wtime = jiffies + (2 * HZ);
 729         do {
 730                 if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS)
 731                         if (ha->firmware_state & (BIT_2 | BIT_0))
 732                                 return;
 733
 734                 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
 735                         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
 736
 737                 msleep(1000);
 738         } while (!time_after_eq(jiffies, wtime));
 739
 740 }
 741
 742 static int qla4xxx_initialize_ddb_list(struct scsi_qla_host *ha)
 743 {
 744         uint16_t fw_ddb_index;
 745         int status = QLA_SUCCESS;
 746
 747         /* free the ddb list if is not empty */
 748         if (!list_empty(&ha->ddb_list))
 749                 qla4xxx_free_ddb_list(ha);
 750
 751         for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES; fw_ddb_index++)
 752                 ha->fw_ddb_index_map[fw_ddb_index] =
 753                         (struct ddb_entry *)INVALID_ENTRY;
 754
 755         ha->tot_ddbs = 0;
 756
 757         qla4xxx_flush_AENS(ha);
 758
 759         /*
 760          * First perform device discovery for active
 761          * fw ddb indexes and build
 762          * ddb list.
 763          */
 764         if ((status = qla4xxx_build_ddb_list(ha)) == QLA_ERROR)
 765                 return status;
 766
 767         /* Wait for an AEN */
 768         qla4xxx_devices_ready(ha);
 769
 770         /*
 771          * Targets can come online after the inital discovery, so processing
 772          * the aens here will catch them.
 773          */
 774         if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
 775                 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
 776
 777         return status;
 778 }
 779
 780 /**
 781  * qla4xxx_update_ddb_list - update the driver ddb list
 782  * @ha: pointer to host adapter structure.
 783  *
 784  * This routine obtains device information from the F/W database after
 785  * firmware or adapter resets.  The device table is preserved.
 786  **/
 787 int qla4xxx_reinitialize_ddb_list(struct scsi_qla_host *ha)
 788 {
 789         int status = QLA_SUCCESS;
 790         struct ddb_entry *ddb_entry, *detemp;
 791
 792         /* Update the device information for all devices. */
 793         list_for_each_entry_safe(ddb_entry, detemp, &ha->ddb_list, list) {
 794                 qla4xxx_update_ddb_entry(ha, ddb_entry,
 795                                          ddb_entry->fw_ddb_index);
 796                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
 797                         atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
 798                         DEBUG2(printk ("scsi%ld: %s: ddb index [%d] marked "
 799                                        "ONLINE\n", ha->host_no, __func__,
 800                                        ddb_entry->fw_ddb_index));
 801                 } else if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
 802                         qla4xxx_mark_device_missing(ha, ddb_entry);
 803         }
 804         return status;
 805 }
 806
 807 /**
 808  * qla4xxx_relogin_device - re-establish session
 809  * @ha: Pointer to host adapter structure.
 810  * @ddb_entry: Pointer to device database entry
 811  *
 812  * This routine does a session relogin with the specified device.
 813  * The ddb entry must be assigned prior to making this call.
 814  **/
 815 int qla4xxx_relogin_device(struct scsi_qla_host *ha,
 816                            struct ddb_entry * ddb_entry)
 817 {
 818         uint16_t relogin_timer;
 819
 820         relogin_timer = max(ddb_entry->default_relogin_timeout,
 821                             (uint16_t)RELOGIN_TOV);
 822         atomic_set(&ddb_entry->relogin_timer, relogin_timer);
 823
 824         DEBUG2(printk("scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
 825                       ddb_entry->fw_ddb_index, relogin_timer));
 826
 827         qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index, 0);
 828
 829         return QLA_SUCCESS;
 830 }
 831
 832 static int qla4xxx_config_nvram(struct scsi_qla_host *ha)
 833 {
 834         unsigned long flags;
 835         union external_hw_config_reg extHwConfig;
 836
 837         DEBUG2(printk("scsi%ld: %s: Get EEProm parameters \n", ha->host_no,
 838                       __func__));
 839         if (ql4xxx_lock_flash(ha) != QLA_SUCCESS)
 840                 return (QLA_ERROR);
 841         if (ql4xxx_lock_nvram(ha) != QLA_SUCCESS) {
 842                 ql4xxx_unlock_flash(ha);
 843                 return (QLA_ERROR);
 844         }
 845
 846         /* Get EEPRom Parameters from NVRAM and validate */
 847         dev_info(&ha->pdev->dev, "Configuring NVRAM ...\n");
 848         if (qla4xxx_is_nvram_configuration_valid(ha) == QLA_SUCCESS) {
 849                 spin_lock_irqsave(&ha->hardware_lock, flags);
 850                 extHwConfig.Asuint32_t =
 851                         rd_nvram_word(ha, eeprom_ext_hw_conf_offset(ha));
 852                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 853         } else {
 854                 /*
 855                  * QLogic adapters should always have a valid NVRAM.
 856                  * If not valid, do not load.
 857                  */
 858                 dev_warn(&ha->pdev->dev,
 859                            "scsi%ld: %s: EEProm checksum invalid.  "
 860                            "Please update your EEPROM\n", ha->host_no,
 861                            __func__);
 862
 863                 /* set defaults */
 864                 if (is_qla4010(ha))
 865                         extHwConfig.Asuint32_t = 0x1912;
 866                 else if (is_qla4022(ha) | is_qla4032(ha))
 867                         extHwConfig.Asuint32_t = 0x0023;
 868         }
 869         DEBUG(printk("scsi%ld: %s: Setting extHwConfig to 0xFFFF%04x\n",
 870                      ha->host_no, __func__, extHwConfig.Asuint32_t));
 871
 872         spin_lock_irqsave(&ha->hardware_lock, flags);
 873         writel((0xFFFF << 16) | extHwConfig.Asuint32_t, isp_ext_hw_conf(ha));
 874         readl(isp_ext_hw_conf(ha));
 875         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 876
 877         ql4xxx_unlock_nvram(ha);
 878         ql4xxx_unlock_flash(ha);
 879
 880         return (QLA_SUCCESS);
 881 }
 882
 883 static void qla4x00_pci_config(struct scsi_qla_host *ha)
 884 {
 885         uint16_t w;
 886         int status;
 887
 888         dev_info(&ha->pdev->dev, "Configuring PCI space...\n");
 889
 890         pci_set_master(ha->pdev);
 891         status = pci_set_mwi(ha->pdev);
 892         /*
 893          * We want to respect framework's setting of PCI configuration space
 894          * command register and also want to make sure that all bits of
 895          * interest to us are properly set in command register.
 896          */
 897         pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
 898         w |= PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
 899         w &= ~PCI_COMMAND_INTX_DISABLE;
 900         pci_write_config_word(ha->pdev, PCI_COMMAND, w);
 901 }
 902
 903 static int qla4xxx_start_firmware_from_flash(struct scsi_qla_host *ha)
 904 {
 905         int status = QLA_ERROR;
 906         uint32_t max_wait_time;
 907         unsigned long flags;
 908         uint32_t mbox_status;
 909
 910         dev_info(&ha->pdev->dev, "Starting firmware ...\n");
 911
 912         /*
 913          * Start firmware from flash ROM
 914          *
 915          * WORKAROUND: Stuff a non-constant value that the firmware can
 916          * use as a seed for a random number generator in MB7 prior to
 917          * setting BOOT_ENABLE.  Fixes problem where the TCP
 918          * connections use the same TCP ports after each reboot,
 919          * causing some connections to not get re-established.
 920          */
 921         DEBUG(printk("scsi%d: %s: Start firmware from flash ROM\n",
 922                      ha->host_no, __func__));
 923
 924         spin_lock_irqsave(&ha->hardware_lock, flags);
 925         writel(jiffies, &ha->reg->mailbox[7]);
 926         if (is_qla4022(ha) | is_qla4032(ha))
 927                 writel(set_rmask(NVR_WRITE_ENABLE),
 928                        &ha->reg->u1.isp4022.nvram);
 929
 930         writel(2, &ha->reg->mailbox[6]);
 931         readl(&ha->reg->mailbox[6]);
 932
 933         writel(set_rmask(CSR_BOOT_ENABLE), &ha->reg->ctrl_status);
 934         readl(&ha->reg->ctrl_status);
 935         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 936
 937         /* Wait for firmware to come UP. */
 938         max_wait_time = FIRMWARE_UP_TOV * 4;
 939         do {
 940                 uint32_t ctrl_status;
 941
 942                 spin_lock_irqsave(&ha->hardware_lock, flags);
 943                 ctrl_status = readw(&ha->reg->ctrl_status);
 944                 mbox_status = readw(&ha->reg->mailbox[0]);
 945                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 946
 947                 if (ctrl_status & set_rmask(CSR_SCSI_PROCESSOR_INTR))
 948                         break;
 949                 if (mbox_status == MBOX_STS_COMMAND_COMPLETE)
 950                         break;
 951
 952                 DEBUG2(printk("scsi%ld: %s: Waiting for boot firmware to "
 953                               "complete... ctrl_sts=0x%x, remaining=%d\n",
 954                               ha->host_no, __func__, ctrl_status,
 955                               max_wait_time));
 956
 957                 msleep(250);
 958         } while ((max_wait_time--));
 959
 960         if (mbox_status == MBOX_STS_COMMAND_COMPLETE) {
 961                 DEBUG(printk("scsi%ld: %s: Firmware has started\n",
 962                              ha->host_no, __func__));
 963
 964                 spin_lock_irqsave(&ha->hardware_lock, flags);
 965                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
 966                        &ha->reg->ctrl_status);
 967                 readl(&ha->reg->ctrl_status);
 968                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 969
 970                 status = QLA_SUCCESS;
 971         } else {
 972                 printk(KERN_INFO "scsi%ld: %s: Boot firmware failed "
 973                        "-  mbox status 0x%x\n", ha->host_no, __func__,
 974                        mbox_status);
 975                 status = QLA_ERROR;
 976         }
 977         return status;
 978 }
 979
 980 int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
 981 {
 982 #define QL4_LOCK_DRVR_WAIT      60
 983 #define QL4_LOCK_DRVR_SLEEP     1
 984
 985         int drvr_wait = QL4_LOCK_DRVR_WAIT;
 986         while (drvr_wait) {
 987                 if (ql4xxx_lock_drvr(a) == 0) {
 988                         ssleep(QL4_LOCK_DRVR_SLEEP);
 989                         if (drvr_wait) {
 990                                 DEBUG2(printk("scsi%ld: %s: Waiting for "
 991                                               "Global Init Semaphore(%d)...\n",
 992                                               a->host_no,
 993                                               __func__, drvr_wait));
 994                         }
 995                         drvr_wait -= QL4_LOCK_DRVR_SLEEP;
 996                 } else {
 997                         DEBUG2(printk("scsi%ld: %s: Global Init Semaphore "
 998                                       "acquired\n", a->host_no, __func__));
 999                         return QLA_SUCCESS;
1000                 }
1001         }
1002         return QLA_ERROR;
1003 }
1004
1005 /**
1006  * qla4xxx_start_firmware - starts qla4xxx firmware
1007  * @ha: Pointer to host adapter structure.
1008  *
1009  * This routine performs the neccessary steps to start the firmware for
1010  * the QLA4010 adapter.
1011  **/
1012 static int qla4xxx_start_firmware(struct scsi_qla_host *ha)
1013 {
1014         unsigned long flags = 0;
1015         uint32_t mbox_status;
1016         int status = QLA_ERROR;
1017         int soft_reset = 1;
1018         int config_chip = 0;
1019
1020         if (is_qla4022(ha) | is_qla4032(ha))
1021                 ql4xxx_set_mac_number(ha);
1022
1023         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
1024                 return QLA_ERROR;
1025
1026         spin_lock_irqsave(&ha->hardware_lock, flags);
1027
1028         DEBUG2(printk("scsi%ld: %s: port_ctrl   = 0x%08X\n", ha->host_no,
1029                       __func__, readw(isp_port_ctrl(ha))));
1030         DEBUG(printk("scsi%ld: %s: port_status = 0x%08X\n", ha->host_no,
1031                      __func__, readw(isp_port_status(ha))));
1032
1033         /* Is Hardware already initialized? */
1034         if ((readw(isp_port_ctrl(ha)) & 0x8000) != 0) {
1035                 DEBUG(printk("scsi%ld: %s: Hardware has already been "
1036                              "initialized\n", ha->host_no, __func__));
1037
1038                 /* Receive firmware boot acknowledgement */
1039                 mbox_status = readw(&ha->reg->mailbox[0]);
1040
1041                 DEBUG2(printk("scsi%ld: %s: H/W Config complete - mbox[0]= "
1042                               "0x%x\n", ha->host_no, __func__, mbox_status));
1043
1044                 /* Is firmware already booted? */
1045                 if (mbox_status == 0) {
1046                         /* F/W not running, must be config by net driver */
1047                         config_chip = 1;
1048                         soft_reset = 0;
1049                 } else {
1050                         writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
1051                                &ha->reg->ctrl_status);
1052                         readl(&ha->reg->ctrl_status);
1053                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1054                         if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
1055                                 DEBUG2(printk("scsi%ld: %s: Get firmware "
1056                                               "state -- state = 0x%x\n",
1057                                               ha->host_no,
1058                                               __func__, ha->firmware_state));
1059                                 /* F/W is running */
1060                                 if (ha->firmware_state &
1061                                     FW_STATE_CONFIG_WAIT) {
1062                                         DEBUG2(printk("scsi%ld: %s: Firmware "
1063                                                       "in known state -- "
1064                                                       "config and "
1065                                                       "boot, state = 0x%x\n",
1066                                                       ha->host_no, __func__,
1067                                                       ha->firmware_state));
1068                                         config_chip = 1;
1069                                         soft_reset = 0;
1070                                 }
1071                         } else {
1072                                 DEBUG2(printk("scsi%ld: %s: Firmware in "
1073                                               "unknown state -- resetting,"
1074                                               " state = "
1075                                               "0x%x\n", ha->host_no, __func__,
1076                                               ha->firmware_state));
1077                         }
1078                         spin_lock_irqsave(&ha->hardware_lock, flags);
1079                 }
1080         } else {
1081                 DEBUG(printk("scsi%ld: %s: H/W initialization hasn't been "
1082                              "started - resetting\n", ha->host_no, __func__));
1083         }
1084         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1085
1086         DEBUG(printk("scsi%ld: %s: Flags soft_rest=%d, config= %d\n ",
1087                      ha->host_no, __func__, soft_reset, config_chip));
1088         if (soft_reset) {
1089                 DEBUG(printk("scsi%ld: %s: Issue Soft Reset\n", ha->host_no,
1090                              __func__));
1091                 status = qla4xxx_soft_reset(ha);
1092                 if (status == QLA_ERROR) {
1093                         DEBUG(printk("scsi%d: %s: Soft Reset failed!\n",
1094                                      ha->host_no, __func__));
1095                         ql4xxx_unlock_drvr(ha);
1096                         return QLA_ERROR;
1097                 }
1098                 config_chip = 1;
1099
1100                 /* Reset clears the semaphore, so aquire again */
1101                 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
1102                         return QLA_ERROR;
1103         }
1104
1105         if (config_chip) {
1106                 if ((status = qla4xxx_config_nvram(ha)) == QLA_SUCCESS)
1107                         status = qla4xxx_start_firmware_from_flash(ha);
1108         }
1109
1110         ql4xxx_unlock_drvr(ha);
1111         if (status == QLA_SUCCESS) {
1112                 qla4xxx_get_fw_version(ha);
1113                 if (test_and_clear_bit(AF_GET_CRASH_RECORD, &ha->flags))
1114                         qla4xxx_get_crash_record(ha);
1115         } else {
1116                 DEBUG(printk("scsi%ld: %s: Firmware has NOT started\n",
1117                              ha->host_no, __func__));
1118         }
1119         return status;
1120 }
1121
1122
1123 /**
1124  * qla4xxx_initialize_adapter - initiailizes hba
1125  * @ha: Pointer to host adapter structure.
1126  * @renew_ddb_list: Indicates what to do with the adapter's ddb list
1127  *      after adapter recovery has completed.
1128  *      0=preserve ddb list, 1=destroy and rebuild ddb list
1129  *
1130  * This routine parforms all of the steps necessary to initialize the adapter.
1131  *
1132  **/
1133 int qla4xxx_initialize_adapter(struct scsi_qla_host *ha,
1134                                uint8_t renew_ddb_list)
1135 {
1136         int status = QLA_ERROR;
1137         int8_t ip_address[IP_ADDR_LEN] = {0} ;
1138
1139         ha->eeprom_cmd_data = 0;
1140
1141         qla4x00_pci_config(ha);
1142
1143         qla4xxx_disable_intrs(ha);
1144
1145         /* Initialize the Host adapter request/response queues and firmware */
1146         if (qla4xxx_start_firmware(ha) == QLA_ERROR)
1147                 goto exit_init_hba;
1148
1149         if (qla4xxx_validate_mac_address(ha) == QLA_ERROR)
1150                 goto exit_init_hba;
1151
1152         if (qla4xxx_init_local_data(ha) == QLA_ERROR)
1153                 goto exit_init_hba;
1154
1155         status = qla4xxx_init_firmware(ha);
1156         if (status == QLA_ERROR)
1157                 goto exit_init_hba;
1158
1159         /*
1160          * FW is waiting to get an IP address from DHCP server: Skip building
1161          * the ddb_list and wait for DHCP lease acquired aen to come in
1162          * followed by 0x8014 aen" to trigger the tgt discovery process.
1163          */
1164         if (ha->firmware_state & FW_STATE_DHCP_IN_PROGRESS)
1165                 goto exit_init_online;
1166
1167         /* Skip device discovery if ip and subnet is zero */
1168         if (memcmp(ha->ip_address, ip_address, IP_ADDR_LEN) == 0 ||
1169             memcmp(ha->subnet_mask, ip_address, IP_ADDR_LEN) == 0)
1170                 goto exit_init_online;
1171
1172         if (renew_ddb_list == PRESERVE_DDB_LIST) {
1173                 /*
1174                  * We want to preserve lun states (i.e. suspended, etc.)
1175                  * for recovery initiated by the driver.  So just update
1176                  * the device states for the existing ddb_list.
1177                  */
1178                 qla4xxx_reinitialize_ddb_list(ha);
1179         } else if (renew_ddb_list == REBUILD_DDB_LIST) {
1180                 /*
1181                  * We want to build the ddb_list from scratch during
1182                  * driver initialization and recovery initiated by the
1183                  * INT_HBA_RESET IOCTL.
1184                  */
1185                 status = qla4xxx_initialize_ddb_list(ha);
1186                 if (status == QLA_ERROR) {
1187                         DEBUG2(printk("%s(%ld) Error occurred during build"
1188                                       "ddb list\n", __func__, ha->host_no));
1189                         goto exit_init_hba;
1190                 }
1191
1192         }
1193         if (!ha->tot_ddbs) {
1194                 DEBUG2(printk("scsi%ld: Failed to initialize devices or none "
1195                               "present in Firmware device database\n",
1196                               ha->host_no));
1197         }
1198
1199 exit_init_online:
1200         set_bit(AF_ONLINE, &ha->flags);
1201 exit_init_hba:
1202         return status;
1203 }
1204
1205 /**
1206  * qla4xxx_add_device_dynamically - ddb addition due to an AEN
1207  * @ha:  Pointer to host adapter structure.
1208  * @fw_ddb_index:  Firmware's device database index
1209  *
1210  * This routine processes adds a device as a result of an 8014h AEN.
1211  **/
1212 static void qla4xxx_add_device_dynamically(struct scsi_qla_host *ha,
1213                                            uint32_t fw_ddb_index)
1214 {
1215         struct ddb_entry * ddb_entry;
1216         uint32_t new_tgt;
1217
1218         /* First allocate a device structure */
1219         ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index, &new_tgt);
1220         if (ddb_entry == NULL) {
1221                 DEBUG2(printk(KERN_WARNING
1222                               "scsi%ld: Unable to allocate memory to add "
1223                               "fw_ddb_index %d\n", ha->host_no, fw_ddb_index));
1224                 return;
1225         }
1226
1227         if (!new_tgt && (ddb_entry->fw_ddb_index != fw_ddb_index)) {
1228                 /* Target has been bound to a new fw_ddb_index */
1229                 qla4xxx_free_ddb(ha, ddb_entry);
1230                 ddb_entry = qla4xxx_alloc_ddb(ha, fw_ddb_index);
1231                 if (ddb_entry == NULL) {
1232                         DEBUG2(printk(KERN_WARNING
1233                                 "scsi%ld: Unable to allocate memory"
1234                                 " to add fw_ddb_index %d\n",
1235                                 ha->host_no, fw_ddb_index));
1236                         return;
1237                 }
1238         }
1239         if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
1240                                     QLA_ERROR) {
1241                 ha->fw_ddb_index_map[fw_ddb_index] =
1242                                         (struct ddb_entry *)INVALID_ENTRY;
1243                 DEBUG2(printk(KERN_WARNING
1244                               "scsi%ld: failed to add new device at index "
1245                               "[%d]\n Unable to retrieve fw ddb entry\n",
1246                               ha->host_no, fw_ddb_index));
1247                 qla4xxx_free_ddb(ha, ddb_entry);
1248                 return;
1249         }
1250
1251         if (qla4xxx_add_sess(ddb_entry)) {
1252                 DEBUG2(printk(KERN_WARNING
1253                               "scsi%ld: failed to add new device at index "
1254                               "[%d]\n Unable to add connection and session\n",
1255                               ha->host_no, fw_ddb_index));
1256                 qla4xxx_free_ddb(ha, ddb_entry);
1257         }
1258 }
1259
1260 /**
1261  * qla4xxx_process_ddb_changed - process ddb state change
1262  * @ha - Pointer to host adapter structure.
1263  * @fw_ddb_index - Firmware's device database index
1264  * @state - Device state
1265  *
1266  * This routine processes a Decive Database Changed AEN Event.
1267  **/
1268 int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha,
1269                                 uint32_t fw_ddb_index, uint32_t state)
1270 {
1271         struct ddb_entry * ddb_entry;
1272         uint32_t old_fw_ddb_device_state;
1273
1274         /* check for out of range index */
1275         if (fw_ddb_index >= MAX_DDB_ENTRIES)
1276                 return QLA_ERROR;
1277
1278         /* Get the corresponging ddb entry */
1279         ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
1280         /* Device does not currently exist in our database. */
1281         if (ddb_entry == NULL) {
1282                 if (state == DDB_DS_SESSION_ACTIVE)
1283                         qla4xxx_add_device_dynamically(ha, fw_ddb_index);
1284                 return QLA_SUCCESS;
1285         }
1286
1287         /* Device already exists in our database. */
1288         old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
1289         DEBUG2(printk("scsi%ld: %s DDB - old state= 0x%x, new state=0x%x for "
1290                       "index [%d]\n", ha->host_no, __func__,
1291                       ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
1292         if (old_fw_ddb_device_state == state &&
1293             state == DDB_DS_SESSION_ACTIVE) {
1294                 /* Do nothing, state not changed. */
1295                 return QLA_SUCCESS;
1296         }
1297
1298         ddb_entry->fw_ddb_device_state = state;
1299         /* Device is back online. */
1300         if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
1301                 atomic_set(&ddb_entry->port_down_timer,
1302                            ha->port_down_retry_count);
1303                 atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
1304                 atomic_set(&ddb_entry->relogin_retry_count, 0);
1305                 atomic_set(&ddb_entry->relogin_timer, 0);
1306                 clear_bit(DF_RELOGIN, &ddb_entry->flags);
1307                 clear_bit(DF_NO_RELOGIN, &ddb_entry->flags);
1308                 iscsi_if_create_session_done(ddb_entry->conn);
1309                 /*
1310                  * Change the lun state to READY in case the lun TIMEOUT before
1311                  * the device came back.
1312                  */
1313         } else {
1314                 /* Device went away, try to relogin. */
1315                 /* Mark device missing */
1316                 if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
1317                         qla4xxx_mark_device_missing(ha, ddb_entry);
1318                 /*
1319                  * Relogin if device state changed to a not active state.
1320                  * However, do not relogin if this aen is a result of an IOCTL
1321                  * logout (DF_NO_RELOGIN) or if this is a discovered device.
1322                  */
1323                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_FAILED &&
1324                     !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
1325                     !test_bit(DF_NO_RELOGIN, &ddb_entry->flags) &&
1326                     !test_bit(DF_ISNS_DISCOVERED, &ddb_entry->flags)) {
1327                         /*
1328                          * This triggers a relogin.  After the relogin_timer
1329                          * expires, the relogin gets scheduled.  We must wait a
1330                          * minimum amount of time since receiving an 0x8014 AEN
1331                          * with failed device_state or a logout response before
1332                          * we can issue another relogin.
1333                          */
1334                         /* Firmware padds this timeout: (time2wait +1).
1335                          * Driver retry to login should be longer than F/W.
1336                          * Otherwise F/W will fail
1337                          * set_ddb() mbx cmd with 0x4005 since it still
1338                          * counting down its time2wait.
1339                          */
1340                         atomic_set(&ddb_entry->relogin_timer, 0);
1341                         atomic_set(&ddb_entry->retry_relogin_timer,
1342                                    ddb_entry->default_time2wait + 4);
1343                 }
1344         }
1345
1346         return QLA_SUCCESS;
1347 }
1348