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   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 <scsi/iscsi_if.h>
   9 #include "ql4_def.h"
  10 #include "ql4_glbl.h"
  11 #include "ql4_dbg.h"
  12 #include "ql4_inline.h"
  13
  14 static struct ddb_entry * qla4xxx_alloc_ddb(struct scsi_qla_host *ha,
  15                                             uint32_t fw_ddb_index);
  16
  17 static void ql4xxx_set_mac_number(struct scsi_qla_host *ha)
  18 {
  19         uint32_t value;
  20         uint8_t func_number;
  21         unsigned long flags;
  22
  23         /* Get the function number */
  24         spin_lock_irqsave(&ha->hardware_lock, flags);
  25         value = readw(&ha->reg->ctrl_status);
  26         spin_unlock_irqrestore(&ha->hardware_lock, flags);
  27
  28         func_number = (uint8_t) ((value >> 4) & 0x30);
  29         switch (value & ISP_CONTROL_FN_MASK) {
  30         case ISP_CONTROL_FN0_SCSI:
  31                 ha->mac_index = 1;
  32                 break;
  33         case ISP_CONTROL_FN1_SCSI:
  34                 ha->mac_index = 3;
  35                 break;
  36         default:
  37                 DEBUG2(printk("scsi%ld: %s: Invalid function number, "
  38                               "ispControlStatus = 0x%x\n", ha->host_no,
  39                               __func__, value));
  40                 break;
  41         }
  42         DEBUG2(printk("scsi%ld: %s: mac_index %d.\n", ha->host_no, __func__,
  43                       ha->mac_index));
  44 }
  45
  46 /**
  47  * qla4xxx_free_ddb - deallocate ddb
  48  * @ha: pointer to host adapter structure.
  49  * @ddb_entry: pointer to device database entry
  50  *
  51  * This routine deallocates and unlinks the specified ddb_entry from the
  52  * adapter's
  53  **/
  54 static void qla4xxx_free_ddb(struct scsi_qla_host *ha,
  55                              struct ddb_entry *ddb_entry)
  56 {
  57         /* Remove device entry from list */
  58         list_del_init(&ddb_entry->list);
  59
  60         /* Remove device pointer from index mapping arrays */
  61         ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] =
  62                 (struct ddb_entry *) INVALID_ENTRY;
  63         ha->tot_ddbs--;
  64
  65         /* Free memory and scsi-ml struct for device entry */
  66         qla4xxx_destroy_sess(ddb_entry);
  67 }
  68
  69 /**
  70  * qla4xxx_free_ddb_list - deallocate all ddbs
  71  * @ha: pointer to host adapter structure.
  72  *
  73  * This routine deallocates and removes all devices on the sppecified adapter.
  74  **/
  75 void qla4xxx_free_ddb_list(struct scsi_qla_host *ha)
  76 {
  77         struct list_head *ptr;
  78         struct ddb_entry *ddb_entry;
  79
  80         while (!list_empty(&ha->ddb_list)) {
  81                 ptr = ha->ddb_list.next;
  82                 /* Free memory for device entry and remove */
  83                 ddb_entry = list_entry(ptr, struct ddb_entry, list);
  84                 qla4xxx_free_ddb(ha, ddb_entry);
  85         }
  86 }
  87
  88 /**
  89  * qla4xxx_init_rings - initialize hw queues
  90  * @ha: pointer to host adapter structure.
  91  *
  92  * This routine initializes the internal queues for the specified adapter.
  93  * The QLA4010 requires us to restart the queues at index 0.
  94  * The QLA4000 doesn't care, so just default to QLA4010's requirement.
  95  **/
  96 int qla4xxx_init_rings(struct scsi_qla_host *ha)
  97 {
  98         unsigned long flags = 0;
  99
 100         /* Initialize request queue. */
 101         spin_lock_irqsave(&ha->hardware_lock, flags);
 102         ha->request_out = 0;
 103         ha->request_in = 0;
 104         ha->request_ptr = &ha->request_ring[ha->request_in];
 105         ha->req_q_count = REQUEST_QUEUE_DEPTH;
 106
 107         /* Initialize response queue. */
 108         ha->response_in = 0;
 109         ha->response_out = 0;
 110         ha->response_ptr = &ha->response_ring[ha->response_out];
 111
 112         /*
 113          * Initialize DMA Shadow registers.  The firmware is really supposed to
 114          * take care of this, but on some uniprocessor systems, the shadow
 115          * registers aren't cleared-- causing the interrupt_handler to think
 116          * there are responses to be processed when there aren't.
 117          */
 118         ha->shadow_regs->req_q_out = __constant_cpu_to_le32(0);
 119         ha->shadow_regs->rsp_q_in = __constant_cpu_to_le32(0);
 120         wmb();
 121
 122         writel(0, &ha->reg->req_q_in);
 123         writel(0, &ha->reg->rsp_q_out);
 124         readl(&ha->reg->rsp_q_out);
 125
 126         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 127
 128         return QLA_SUCCESS;
 129 }
 130
 131 /**
 132  * qla4xxx_validate_mac_address - validate adapter MAC address(es)
 133  * @ha: pointer to host adapter structure.
 134  *
 135  **/
 136 static int qla4xxx_validate_mac_address(struct scsi_qla_host *ha)
 137 {
 138         struct flash_sys_info *sys_info;
 139         dma_addr_t sys_info_dma;
 140         int status = QLA_ERROR;
 141
 142         sys_info = dma_alloc_coherent(&ha->pdev->dev, sizeof(*sys_info),
 143                                       &sys_info_dma, GFP_KERNEL);
 144         if (sys_info == NULL) {
 145                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
 146                               ha->host_no, __func__));
 147
 148                 goto exit_validate_mac_no_free;
 149         }
 150         memset(sys_info, 0, sizeof(*sys_info));
 151
 152         /* Get flash sys info */
 153         if (qla4xxx_get_flash(ha, sys_info_dma, FLASH_OFFSET_SYS_INFO,
 154                               sizeof(*sys_info)) != QLA_SUCCESS) {
 155                 DEBUG2(printk("scsi%ld: %s: get_flash FLASH_OFFSET_SYS_INFO "
 156                               "failed\n", ha->host_no, __func__));
 157
 158                 goto exit_validate_mac;
 159         }
 160
 161         /* Save M.A.C. address & serial_number */
 162         memcpy(ha->my_mac, &sys_info->physAddr[0].address[0],
 163                min(sizeof(ha->my_mac),
 164                    sizeof(sys_info->physAddr[0].address)));
 165         memcpy(ha->serial_number, &sys_info->acSerialNumber,
 166                min(sizeof(ha->serial_number),
 167                    sizeof(sys_info->acSerialNumber)));
 168
 169         status = QLA_SUCCESS;
 170
 171  exit_validate_mac:
 172         dma_free_coherent(&ha->pdev->dev, sizeof(*sys_info), sys_info,
 173                           sys_info_dma);
 174
 175  exit_validate_mac_no_free:
 176         return status;
 177 }
 178
 179 /**
 180  * qla4xxx_init_local_data - initialize adapter specific local data
 181  * @ha: pointer to host adapter structure.
 182  *
 183  **/
 184 static int qla4xxx_init_local_data(struct scsi_qla_host *ha)
 185 {
 186         /* Initilize aen queue */
 187         ha->aen_q_count = MAX_AEN_ENTRIES;
 188
 189         return qla4xxx_get_firmware_status(ha);
 190 }
 191
 192 static int qla4xxx_fw_ready(struct scsi_qla_host *ha)
 193 {
 194         uint32_t timeout_count;
 195         int ready = 0;
 196
 197         DEBUG2(dev_info(&ha->pdev->dev, "Waiting for Firmware Ready..\n"));
 198         for (timeout_count = ADAPTER_INIT_TOV; timeout_count > 0;
 199              timeout_count--) {
 200                 if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
 201                         qla4xxx_get_dhcp_ip_address(ha);
 202
 203                 /* Get firmware state. */
 204                 if (qla4xxx_get_firmware_state(ha) != QLA_SUCCESS) {
 205                         DEBUG2(printk("scsi%ld: %s: unable to get firmware "
 206                                       "state\n", ha->host_no, __func__));
 207                         break;
 208
 209                 }
 210
 211                 if (ha->firmware_state & FW_STATE_ERROR) {
 212                         DEBUG2(printk("scsi%ld: %s: an unrecoverable error has"
 213                                       " occurred\n", ha->host_no, __func__));
 214                         break;
 215
 216                 }
 217                 if (ha->firmware_state & FW_STATE_CONFIG_WAIT) {
 218                         /*
 219                          * The firmware has not yet been issued an Initialize
 220                          * Firmware command, so issue it now.
 221                          */
 222                         if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR)
 223                                 break;
 224
 225                         /* Go back and test for ready state - no wait. */
 226                         continue;
 227                 }
 228
 229                 if (ha->firmware_state == FW_STATE_READY) {
 230                         DEBUG2(dev_info(&ha->pdev->dev, "Firmware Ready..\n"));
 231                         /* The firmware is ready to process SCSI commands. */
 232                         DEBUG2(dev_info(&ha->pdev->dev,
 233                                           "scsi%ld: %s: MEDIA TYPE - %s\n",
 234                                           ha->host_no,
 235                                           __func__, (ha->addl_fw_state &
 236                                                      FW_ADDSTATE_OPTICAL_MEDIA)
 237                                           != 0 ? "OPTICAL" : "COPPER"));
 238                         DEBUG2(dev_info(&ha->pdev->dev,
 239                                           "scsi%ld: %s: DHCP STATE Enabled "
 240                                           "%s\n",
 241                                           ha->host_no, __func__,
 242                                           (ha->addl_fw_state &
 243                                            FW_ADDSTATE_DHCP_ENABLED) != 0 ?
 244                                           "YES" : "NO"));
 245                         DEBUG2(dev_info(&ha->pdev->dev,
 246                                           "scsi%ld: %s: LINK %s\n",
 247                                           ha->host_no, __func__,
 248                                           (ha->addl_fw_state &
 249                                            FW_ADDSTATE_LINK_UP) != 0 ?
 250                                           "UP" : "DOWN"));
 251                         DEBUG2(dev_info(&ha->pdev->dev,
 252                                           "scsi%ld: %s: iSNS Service "
 253                                           "Started %s\n",
 254                                           ha->host_no, __func__,
 255                                           (ha->addl_fw_state &
 256                                            FW_ADDSTATE_ISNS_SVC_ENABLED) != 0 ?
 257                                           "YES" : "NO"));
 258
 259                         ready = 1;
 260                         break;
 261                 }
 262                 DEBUG2(printk("scsi%ld: %s: waiting on fw, state=%x:%x - "
 263                               "seconds expired= %d\n", ha->host_no, __func__,
 264                               ha->firmware_state, ha->addl_fw_state,
 265                               timeout_count));
 266                 if (is_qla4032(ha) &&
 267                         !(ha->addl_fw_state & FW_ADDSTATE_LINK_UP) &&
 268                         (timeout_count < ADAPTER_INIT_TOV - 5)) {
 269                         break;
 270                 }
 271
 272                 msleep(1000);
 273         }                       /* end of for */
 274
 275         if (timeout_count == 0)
 276                 DEBUG2(printk("scsi%ld: %s: FW Initialization timed out!\n",
 277                               ha->host_no, __func__));
 278
 279         if (ha->firmware_state & FW_STATE_DHCP_IN_PROGRESS)  {
 280                 DEBUG2(printk("scsi%ld: %s: FW is reporting its waiting to"
 281                               " grab an IP address from DHCP server\n",
 282                               ha->host_no, __func__));
 283                 ready = 1;
 284         }
 285
 286         return ready;
 287 }
 288
 289 /**
 290  * qla4xxx_init_firmware - initializes the firmware.
 291  * @ha: pointer to host adapter structure.
 292  *
 293  **/
 294 static int qla4xxx_init_firmware(struct scsi_qla_host *ha)
 295 {
 296         int status = QLA_ERROR;
 297
 298         dev_info(&ha->pdev->dev, "Initializing firmware..\n");
 299         if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR) {
 300                 DEBUG2(printk("scsi%ld: %s: Failed to initialize firmware "
 301                               "control block\n", ha->host_no, __func__));
 302                 return status;
 303         }
 304         if (!qla4xxx_fw_ready(ha))
 305                 return status;
 306
 307         return qla4xxx_get_firmware_status(ha);
 308 }
 309
 310 static struct ddb_entry* qla4xxx_get_ddb_entry(struct scsi_qla_host *ha,
 311                                                 uint32_t fw_ddb_index,
 312                                                 uint32_t *new_tgt)
 313 {
 314         struct dev_db_entry *fw_ddb_entry = NULL;
 315         dma_addr_t fw_ddb_entry_dma;
 316         struct ddb_entry *ddb_entry = NULL;
 317         int found = 0;
 318         uint32_t device_state;
 319
 320         *new_tgt = 0;
 321         /* Make sure the dma buffer is valid */
 322         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
 323                                           sizeof(*fw_ddb_entry),
 324                                           &fw_ddb_entry_dma, GFP_KERNEL);
 325         if (fw_ddb_entry == NULL) {
 326                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
 327                               ha->host_no, __func__));
 328                 return NULL;
 329         }
 330
 331         if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
 332                                     fw_ddb_entry_dma, NULL, NULL,
 333                                     &device_state, NULL, NULL, NULL) ==
 334             QLA_ERROR) {
 335                 DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
 336                               "fw_ddb_index %d\n", ha->host_no, __func__,
 337                               fw_ddb_index));
 338                 return NULL;
 339         }
 340
 341         /* Allocate DDB if not already allocated. */
 342         DEBUG2(printk("scsi%ld: %s: Looking for ddb[%d]\n", ha->host_no,
 343                       __func__, fw_ddb_index));
 344         list_for_each_entry(ddb_entry, &ha->ddb_list, list) {
 345                 if ((memcmp(ddb_entry->iscsi_name, fw_ddb_entry->iscsi_name,
 346                            ISCSI_NAME_SIZE) == 0) &&
 347                         (ddb_entry->tpgt ==
 348                                 le32_to_cpu(fw_ddb_entry->tgt_portal_grp)) &&
 349                         (memcmp(ddb_entry->isid, fw_ddb_entry->isid,
 350                                 sizeof(ddb_entry->isid)) == 0)) {
 351                         found++;
 352                         break;
 353                 }
 354         }
 355
 356         if (!found) {
 357                 DEBUG2(printk("scsi%ld: %s: ddb[%d] not found - allocating "
 358                               "new ddb\n", ha->host_no, __func__,
 359                               fw_ddb_index));
 360                 *new_tgt = 1;
 361                 ddb_entry = qla4xxx_alloc_ddb(ha, fw_ddb_index);
 362         }
 363
 364         /* if not found allocate new ddb */
 365         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
 366                           fw_ddb_entry_dma);
 367
 368         return ddb_entry;
 369 }
 370
 371 /**
 372  * qla4xxx_update_ddb_entry - update driver's internal ddb
 373  * @ha: pointer to host adapter structure.
 374  * @ddb_entry: pointer to device database structure to be filled
 375  * @fw_ddb_index: index of the ddb entry in fw ddb table
 376  *
 377  * This routine updates the driver's internal device database entry
 378  * with information retrieved from the firmware's device database
 379  * entry for the specified device. The ddb_entry->fw_ddb_index field
 380  * must be initialized prior to calling this routine
 381  *
 382  **/
 383 static int qla4xxx_update_ddb_entry(struct scsi_qla_host *ha,
 384                                     struct ddb_entry *ddb_entry,
 385                                     uint32_t fw_ddb_index)
 386 {
 387         struct dev_db_entry *fw_ddb_entry = NULL;
 388         dma_addr_t fw_ddb_entry_dma;
 389         int status = QLA_ERROR;
 390
 391         if (ddb_entry == NULL) {
 392                 DEBUG2(printk("scsi%ld: %s: ddb_entry is NULL\n", ha->host_no,
 393                               __func__));
 394                 goto exit_update_ddb;
 395         }
 396
 397         /* Make sure the dma buffer is valid */
 398         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
 399                                           sizeof(*fw_ddb_entry),
 400                                           &fw_ddb_entry_dma, GFP_KERNEL);
 401         if (fw_ddb_entry == NULL) {
 402                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
 403                               ha->host_no, __func__));
 404
 405                 goto exit_update_ddb;
 406         }
 407
 408         if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
 409                                     fw_ddb_entry_dma, NULL, NULL,
 410                                     &ddb_entry->fw_ddb_device_state, NULL,
 411                                     &ddb_entry->tcp_source_port_num,
 412                                     &ddb_entry->connection_id) ==
 413             QLA_ERROR) {
 414                 DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
 415                               "fw_ddb_index %d\n", ha->host_no, __func__,
 416                               fw_ddb_index));
 417
 418                 goto exit_update_ddb;
 419         }
 420
 421         status = QLA_SUCCESS;
 422         ddb_entry->target_session_id = le16_to_cpu(fw_ddb_entry->tsid);
 423         ddb_entry->task_mgmt_timeout =
 424                 le16_to_cpu(fw_ddb_entry->def_timeout);
 425         ddb_entry->CmdSn = 0;
 426         ddb_entry->exe_throttle = le16_to_cpu(fw_ddb_entry->exec_throttle);
 427         ddb_entry->default_relogin_timeout =
 428                 le16_to_cpu(fw_ddb_entry->def_timeout);
 429         ddb_entry->default_time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
 430
 431         /* Update index in case it changed */
 432         ddb_entry->fw_ddb_index = fw_ddb_index;
 433         ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
 434
 435         ddb_entry->port = le16_to_cpu(fw_ddb_entry->port);
 436         ddb_entry->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
 437         memcpy(ddb_entry->isid, fw_ddb_entry->isid, sizeof(ddb_entry->isid));
 438
 439         memcpy(&ddb_entry->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
 440                min(sizeof(ddb_entry->iscsi_name),
 441                    sizeof(fw_ddb_entry->iscsi_name)));
 442         memcpy(&ddb_entry->ip_addr[0], &fw_ddb_entry->ip_addr[0],
 443                min(sizeof(ddb_entry->ip_addr), sizeof(fw_ddb_entry->ip_addr)));
 444
 445         DEBUG2(printk("scsi%ld: %s: ddb[%d] - State= %x status= %d.\n",
 446                       ha->host_no, __func__, fw_ddb_index,
 447                       ddb_entry->fw_ddb_device_state, status));
 448
 449  exit_update_ddb:
 450         if (fw_ddb_entry)
 451                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
 452                                   fw_ddb_entry, fw_ddb_entry_dma);
 453
 454         return status;
 455 }
 456
 457 /**
 458  * qla4xxx_alloc_ddb - allocate device database entry
 459  * @ha: Pointer to host adapter structure.
 460  * @fw_ddb_index: Firmware's device database index
 461  *
 462  * This routine allocates a ddb_entry, ititializes some values, and
 463  * inserts it into the ddb list.
 464  **/
 465 static struct ddb_entry * qla4xxx_alloc_ddb(struct scsi_qla_host *ha,
 466                                             uint32_t fw_ddb_index)
 467 {
 468         struct ddb_entry *ddb_entry;
 469
 470         DEBUG2(printk("scsi%ld: %s: fw_ddb_index [%d]\n", ha->host_no,
 471                       __func__, fw_ddb_index));
 472
 473         ddb_entry = qla4xxx_alloc_sess(ha);
 474         if (ddb_entry == NULL) {
 475                 DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
 476                               "to add fw_ddb_index [%d]\n",
 477                               ha->host_no, __func__, fw_ddb_index));
 478                 return ddb_entry;
 479         }
 480
 481         ddb_entry->fw_ddb_index = fw_ddb_index;
 482         atomic_set(&ddb_entry->port_down_timer, ha->port_down_retry_count);
 483         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
 484         atomic_set(&ddb_entry->relogin_timer, 0);
 485         atomic_set(&ddb_entry->relogin_retry_count, 0);
 486         atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
 487         list_add_tail(&ddb_entry->list, &ha->ddb_list);
 488         ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
 489         ha->tot_ddbs++;
 490
 491         return ddb_entry;
 492 }
 493
 494 /**
 495  * qla4xxx_configure_ddbs - builds driver ddb list
 496  * @ha: Pointer to host adapter structure.
 497  *
 498  * This routine searches for all valid firmware ddb entries and builds
 499  * an internal ddb list. Ddbs that are considered valid are those with
 500  * a device state of SESSION_ACTIVE.
 501  **/
 502 static int qla4xxx_build_ddb_list(struct scsi_qla_host *ha)
 503 {
 504         int status = QLA_SUCCESS;
 505         uint32_t fw_ddb_index = 0;
 506         uint32_t next_fw_ddb_index = 0;
 507         uint32_t ddb_state;
 508         uint32_t conn_err, err_code;
 509         struct ddb_entry *ddb_entry;
 510         uint32_t new_tgt;
 511
 512         dev_info(&ha->pdev->dev, "Initializing DDBs ...\n");
 513         for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES;
 514              fw_ddb_index = next_fw_ddb_index) {
 515                 /* First, let's see if a device exists here */
 516                 if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, NULL, 0, NULL,
 517                                             &next_fw_ddb_index, &ddb_state,
 518                                             &conn_err, NULL, NULL) ==
 519                     QLA_ERROR) {
 520                         DEBUG2(printk("scsi%ld: %s: get_ddb_entry, "
 521                                       "fw_ddb_index %d failed", ha->host_no,
 522                                       __func__, fw_ddb_index));
 523                         return QLA_ERROR;
 524                 }
 525
 526                 DEBUG2(printk("scsi%ld: %s: Getting DDB[%d] ddbstate=0x%x, "
 527                               "next_fw_ddb_index=%d.\n", ha->host_no, __func__,
 528                               fw_ddb_index, ddb_state, next_fw_ddb_index));
 529
 530                 /* Issue relogin, if necessary. */
 531                 if (ddb_state == DDB_DS_SESSION_FAILED ||
 532                     ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) {
 533                         /* Try and login to device */
 534                         DEBUG2(printk("scsi%ld: %s: Login to DDB[%d]\n",
 535                                       ha->host_no, __func__, fw_ddb_index));
 536                         err_code = ((conn_err & 0x00ff0000) >> 16);
 537                         if (err_code == 0x1c || err_code == 0x06) {
 538                                 DEBUG2(printk("scsi%ld: %s send target "
 539                                               "completed "
 540                                               "or access denied failure\n",
 541                                               ha->host_no, __func__));
 542                         } else {
 543                                 qla4xxx_set_ddb_entry(ha, fw_ddb_index, 0);
 544                                 if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index,
 545                                         NULL, 0, NULL, &next_fw_ddb_index,
 546                                         &ddb_state, &conn_err, NULL, NULL)
 547                                         == QLA_ERROR) {
 548                                         DEBUG2(printk("scsi%ld: %s:"
 549                                                 "get_ddb_entry %d failed\n",
 550                                                 ha->host_no,
 551                                                 __func__, fw_ddb_index));
 552                                         return QLA_ERROR;
 553                                 }
 554                         }
 555                 }
 556
 557                 if (ddb_state != DDB_DS_SESSION_ACTIVE)
 558                         goto next_one;
 559                 /*
 560                  * if fw_ddb with session active state found,
 561                  * add to ddb_list
 562                  */
 563                 DEBUG2(printk("scsi%ld: %s: DDB[%d] added to list\n",
 564                               ha->host_no, __func__, fw_ddb_index));
 565
 566                 /* Add DDB to internal our ddb list. */
 567                 ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index, &new_tgt);
 568                 if (ddb_entry == NULL) {
 569                         DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
 570                                       "for device at fw_ddb_index %d\n",
 571                                       ha->host_no, __func__, fw_ddb_index));
 572                         return QLA_ERROR;
 573                 }
 574                 /* Fill in the device structure */
 575                 if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
 576                     QLA_ERROR) {
 577                         ha->fw_ddb_index_map[fw_ddb_index] =
 578                                 (struct ddb_entry *)INVALID_ENTRY;
 579
 580
 581                         DEBUG2(printk("scsi%ld: %s: update_ddb_entry failed "
 582                                       "for fw_ddb_index %d.\n",
 583                                       ha->host_no, __func__, fw_ddb_index));
 584                         return QLA_ERROR;
 585                 }
 586
 587 next_one:
 588                 /* We know we've reached the last device when
 589                  * next_fw_ddb_index is 0 */
 590                 if (next_fw_ddb_index == 0)
 591                         break;
 592         }
 593
 594         dev_info(&ha->pdev->dev, "DDB list done..\n");
 595
 596         return status;
 597 }
 598
 599 struct qla4_relog_scan {
 600         int halt_wait;
 601         uint32_t conn_err;
 602         uint32_t err_code;
 603         uint32_t fw_ddb_index;
 604         uint32_t next_fw_ddb_index;
 605         uint32_t fw_ddb_device_state;
 606 };
 607
 608 static int qla4_test_rdy(struct scsi_qla_host *ha, struct qla4_relog_scan *rs)
 609 {
 610         struct ddb_entry *ddb_entry;
 611
 612         /*
 613          * Don't want to do a relogin if connection
 614          * error is 0x1c.
 615          */
 616         rs->err_code = ((rs->conn_err & 0x00ff0000) >> 16);
 617         if (rs->err_code == 0x1c || rs->err_code == 0x06) {
 618                 DEBUG2(printk(
 619                                "scsi%ld: %s send target"
 620                                " completed or "
 621                                "access denied failure\n",
 622                                ha->host_no, __func__));
 623         } else {
 624                 /* We either have a device that is in
 625                  * the process of relogging in or a
 626                  * device that is waiting to be
 627                  * relogged in */
 628                 rs->halt_wait = 0;
 629
 630                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha,
 631                                                            rs->fw_ddb_index);
 632                 if (ddb_entry == NULL)
 633                         return QLA_ERROR;
 634
 635                 if (ddb_entry->dev_scan_wait_to_start_relogin != 0
 636                     && time_after_eq(jiffies,
 637                                      ddb_entry->
 638                                      dev_scan_wait_to_start_relogin))
 639                 {
 640                         ddb_entry->dev_scan_wait_to_start_relogin = 0;
 641                         qla4xxx_set_ddb_entry(ha, rs->fw_ddb_index, 0);
 642                 }
 643         }
 644         return QLA_SUCCESS;
 645 }
 646
 647 static int qla4_scan_for_relogin(struct scsi_qla_host *ha,
 648                                  struct qla4_relog_scan *rs)
 649 {
 650         int error;
 651
 652         /* scan for relogins
 653          * ----------------- */
 654         for (rs->fw_ddb_index = 0; rs->fw_ddb_index < MAX_DDB_ENTRIES;
 655              rs->fw_ddb_index = rs->next_fw_ddb_index) {
 656                 if (qla4xxx_get_fwddb_entry(ha, rs->fw_ddb_index, NULL, 0,
 657                                             NULL, &rs->next_fw_ddb_index,
 658                                             &rs->fw_ddb_device_state,
 659                                             &rs->conn_err, NULL, NULL)
 660                     == QLA_ERROR)
 661                         return QLA_ERROR;
 662
 663                 if (rs->fw_ddb_device_state == DDB_DS_LOGIN_IN_PROCESS)
 664                         rs->halt_wait = 0;
 665
 666                 if (rs->fw_ddb_device_state == DDB_DS_SESSION_FAILED ||
 667                     rs->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE) {
 668                         error = qla4_test_rdy(ha, rs);
 669                         if (error)
 670                                 return error;
 671                 }
 672
 673                 /* We know we've reached the last device when
 674                  * next_fw_ddb_index is 0 */
 675                 if (rs->next_fw_ddb_index == 0)
 676                         break;
 677         }
 678         return QLA_SUCCESS;
 679 }
 680
 681 /**
 682  * qla4xxx_devices_ready - wait for target devices to be logged in
 683  * @ha: pointer to adapter structure
 684  *
 685  * This routine waits up to ql4xdiscoverywait seconds
 686  * F/W database during driver load time.
 687  **/
 688 static int qla4xxx_devices_ready(struct scsi_qla_host *ha)
 689 {
 690         int error;
 691         unsigned long discovery_wtime;
 692         struct qla4_relog_scan rs;
 693
 694         discovery_wtime = jiffies + (ql4xdiscoverywait * HZ);
 695
 696         DEBUG(printk("Waiting (%d) for devices ...\n", ql4xdiscoverywait));
 697         do {
 698                 /* poll for AEN. */
 699                 qla4xxx_get_firmware_state(ha);
 700                 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) {
 701                         /* Set time-between-relogin timer */
 702                         qla4xxx_process_aen(ha, RELOGIN_DDB_CHANGED_AENS);
 703                 }
 704
 705                 /* if no relogins active or needed, halt discvery wait */
 706                 rs.halt_wait = 1;
 707
 708                 error = qla4_scan_for_relogin(ha, &rs);
 709
 710                 if (rs.halt_wait) {
 711                         DEBUG2(printk("scsi%ld: %s: Delay halted.  Devices "
 712                                       "Ready.\n", ha->host_no, __func__));
 713                         return QLA_SUCCESS;
 714                 }
 715
 716                 msleep(2000);
 717         } while (!time_after_eq(jiffies, discovery_wtime));
 718
 719         DEBUG3(qla4xxx_get_conn_event_log(ha));
 720
 721         return QLA_SUCCESS;
 722 }
 723
 724 static void qla4xxx_flush_AENS(struct scsi_qla_host *ha)
 725 {
 726         unsigned long wtime;
 727
 728         /* Flush the 0x8014 AEN from the firmware as a result of
 729          * Auto connect. We are basically doing get_firmware_ddb()
 730          * to determine whether we need to log back in or not.
 731          *  Trying to do a set ddb before we have processed 0x8014
 732          *  will result in another set_ddb() for the same ddb. In other
 733          *  words there will be stale entries in the aen_q.
 734          */
 735         wtime = jiffies + (2 * HZ);
 736         do {
 737                 if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS)
 738                         if (ha->firmware_state & (BIT_2 | BIT_0))
 739                                 return;
 740
 741                 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
 742                         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
 743
 744                 msleep(1000);
 745         } while (!time_after_eq(jiffies, wtime));
 746
 747 }
 748
 749 static int qla4xxx_initialize_ddb_list(struct scsi_qla_host *ha)
 750 {
 751         uint16_t fw_ddb_index;
 752         int status = QLA_SUCCESS;
 753
 754         /* free the ddb list if is not empty */
 755         if (!list_empty(&ha->ddb_list))
 756                 qla4xxx_free_ddb_list(ha);
 757
 758         for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES; fw_ddb_index++)
 759                 ha->fw_ddb_index_map[fw_ddb_index] =
 760                         (struct ddb_entry *)INVALID_ENTRY;
 761
 762         ha->tot_ddbs = 0;
 763
 764         qla4xxx_flush_AENS(ha);
 765
 766         /*
 767          * First perform device discovery for active
 768          * fw ddb indexes and build
 769          * ddb list.
 770          */
 771         if ((status = qla4xxx_build_ddb_list(ha)) == QLA_ERROR)
 772                 return status;
 773
 774         /* Wait for an AEN */
 775         qla4xxx_devices_ready(ha);
 776
 777         /*
 778          * Targets can come online after the inital discovery, so processing
 779          * the aens here will catch them.
 780          */
 781         if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
 782                 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
 783
 784         return status;
 785 }
 786
 787 /**
 788  * qla4xxx_update_ddb_list - update the driver ddb list
 789  * @ha: pointer to host adapter structure.
 790  *
 791  * This routine obtains device information from the F/W database after
 792  * firmware or adapter resets.  The device table is preserved.
 793  **/
 794 int qla4xxx_reinitialize_ddb_list(struct scsi_qla_host *ha)
 795 {
 796         int status = QLA_SUCCESS;
 797         struct ddb_entry *ddb_entry, *detemp;
 798
 799         /* Update the device information for all devices. */
 800         list_for_each_entry_safe(ddb_entry, detemp, &ha->ddb_list, list) {
 801                 qla4xxx_update_ddb_entry(ha, ddb_entry,
 802                                          ddb_entry->fw_ddb_index);
 803                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
 804                         atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
 805                         DEBUG2(printk ("scsi%ld: %s: ddb index [%d] marked "
 806                                        "ONLINE\n", ha->host_no, __func__,
 807                                        ddb_entry->fw_ddb_index));
 808                 } else if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
 809                         qla4xxx_mark_device_missing(ha, ddb_entry);
 810         }
 811         return status;
 812 }
 813
 814 /**
 815  * qla4xxx_relogin_device - re-establish session
 816  * @ha: Pointer to host adapter structure.
 817  * @ddb_entry: Pointer to device database entry
 818  *
 819  * This routine does a session relogin with the specified device.
 820  * The ddb entry must be assigned prior to making this call.
 821  **/
 822 int qla4xxx_relogin_device(struct scsi_qla_host *ha,
 823                            struct ddb_entry * ddb_entry)
 824 {
 825         uint16_t relogin_timer;
 826
 827         relogin_timer = max(ddb_entry->default_relogin_timeout,
 828                             (uint16_t)RELOGIN_TOV);
 829         atomic_set(&ddb_entry->relogin_timer, relogin_timer);
 830
 831         DEBUG2(printk("scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
 832                       ddb_entry->fw_ddb_index, relogin_timer));
 833
 834         qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index, 0);
 835
 836         return QLA_SUCCESS;
 837 }
 838
 839 static int qla4xxx_config_nvram(struct scsi_qla_host *ha)
 840 {
 841         unsigned long flags;
 842         union external_hw_config_reg extHwConfig;
 843
 844         DEBUG2(printk("scsi%ld: %s: Get EEProm parameters \n", ha->host_no,
 845                       __func__));
 846         if (ql4xxx_lock_flash(ha) != QLA_SUCCESS)
 847                 return QLA_ERROR;
 848         if (ql4xxx_lock_nvram(ha) != QLA_SUCCESS) {
 849                 ql4xxx_unlock_flash(ha);
 850                 return QLA_ERROR;
 851         }
 852
 853         /* Get EEPRom Parameters from NVRAM and validate */
 854         dev_info(&ha->pdev->dev, "Configuring NVRAM ...\n");
 855         if (qla4xxx_is_nvram_configuration_valid(ha) == QLA_SUCCESS) {
 856                 spin_lock_irqsave(&ha->hardware_lock, flags);
 857                 extHwConfig.Asuint32_t =
 858                         rd_nvram_word(ha, eeprom_ext_hw_conf_offset(ha));
 859                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 860         } else {
 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                 /* Attempt to set defaults */
 867                 if (is_qla4010(ha))
 868                         extHwConfig.Asuint32_t = 0x1912;
 869                 else if (is_qla4022(ha) | is_qla4032(ha))
 870                         extHwConfig.Asuint32_t = 0x0023;
 871                 else
 872                         return QLA_ERROR;
 873         }
 874         DEBUG(printk("scsi%ld: %s: Setting extHwConfig to 0xFFFF%04x\n",
 875                      ha->host_no, __func__, extHwConfig.Asuint32_t));
 876
 877         spin_lock_irqsave(&ha->hardware_lock, flags);
 878         writel((0xFFFF << 16) | extHwConfig.Asuint32_t, isp_ext_hw_conf(ha));
 879         readl(isp_ext_hw_conf(ha));
 880         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 881
 882         ql4xxx_unlock_nvram(ha);
 883         ql4xxx_unlock_flash(ha);
 884
 885         return QLA_SUCCESS;
 886 }
 887
 888 static void qla4x00_pci_config(struct scsi_qla_host *ha)
 889 {
 890         uint16_t w;
 891         int status;
 892
 893         dev_info(&ha->pdev->dev, "Configuring PCI space...\n");
 894
 895         pci_set_master(ha->pdev);
 896         status = pci_set_mwi(ha->pdev);
 897         /*
 898          * We want to respect framework's setting of PCI configuration space
 899          * command register and also want to make sure that all bits of
 900          * interest to us are properly set in command register.
 901          */
 902         pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
 903         w |= PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
 904         w &= ~PCI_COMMAND_INTX_DISABLE;
 905         pci_write_config_word(ha->pdev, PCI_COMMAND, w);
 906 }
 907
 908 static int qla4xxx_start_firmware_from_flash(struct scsi_qla_host *ha)
 909 {
 910         int status = QLA_ERROR;
 911         uint32_t max_wait_time;
 912         unsigned long flags;
 913         uint32_t mbox_status;
 914
 915         dev_info(&ha->pdev->dev, "Starting firmware ...\n");
 916
 917         /*
 918          * Start firmware from flash ROM
 919          *
 920          * WORKAROUND: Stuff a non-constant value that the firmware can
 921          * use as a seed for a random number generator in MB7 prior to
 922          * setting BOOT_ENABLE.  Fixes problem where the TCP
 923          * connections use the same TCP ports after each reboot,
 924          * causing some connections to not get re-established.
 925          */
 926         DEBUG(printk("scsi%d: %s: Start firmware from flash ROM\n",
 927                      ha->host_no, __func__));
 928
 929         spin_lock_irqsave(&ha->hardware_lock, flags);
 930         writel(jiffies, &ha->reg->mailbox[7]);
 931         if (is_qla4022(ha) | is_qla4032(ha))
 932                 writel(set_rmask(NVR_WRITE_ENABLE),
 933                        &ha->reg->u1.isp4022.nvram);
 934
 935         writel(2, &ha->reg->mailbox[6]);
 936         readl(&ha->reg->mailbox[6]);
 937
 938         writel(set_rmask(CSR_BOOT_ENABLE), &ha->reg->ctrl_status);
 939         readl(&ha->reg->ctrl_status);
 940         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 941
 942         /* Wait for firmware to come UP. */
 943         max_wait_time = FIRMWARE_UP_TOV * 4;
 944         do {
 945                 uint32_t ctrl_status;
 946
 947                 spin_lock_irqsave(&ha->hardware_lock, flags);
 948                 ctrl_status = readw(&ha->reg->ctrl_status);
 949                 mbox_status = readw(&ha->reg->mailbox[0]);
 950                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 951
 952                 if (ctrl_status & set_rmask(CSR_SCSI_PROCESSOR_INTR))
 953                         break;
 954                 if (mbox_status == MBOX_STS_COMMAND_COMPLETE)
 955                         break;
 956
 957                 DEBUG2(printk("scsi%ld: %s: Waiting for boot firmware to "
 958                               "complete... ctrl_sts=0x%x, remaining=%d\n",
 959                               ha->host_no, __func__, ctrl_status,
 960                               max_wait_time));
 961
 962                 msleep(250);
 963         } while ((max_wait_time--));
 964
 965         if (mbox_status == MBOX_STS_COMMAND_COMPLETE) {
 966                 DEBUG(printk("scsi%ld: %s: Firmware has started\n",
 967                              ha->host_no, __func__));
 968
 969                 spin_lock_irqsave(&ha->hardware_lock, flags);
 970                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
 971                        &ha->reg->ctrl_status);
 972                 readl(&ha->reg->ctrl_status);
 973                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 974
 975                 status = QLA_SUCCESS;
 976         } else {
 977                 printk(KERN_INFO "scsi%ld: %s: Boot firmware failed "
 978                        "-  mbox status 0x%x\n", ha->host_no, __func__,
 979                        mbox_status);
 980                 status = QLA_ERROR;
 981         }
 982         return status;
 983 }
 984
 985 int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
 986 {
 987 #define QL4_LOCK_DRVR_WAIT      60
 988 #define QL4_LOCK_DRVR_SLEEP     1
 989
 990         int drvr_wait = QL4_LOCK_DRVR_WAIT;
 991         while (drvr_wait) {
 992                 if (ql4xxx_lock_drvr(a) == 0) {
 993                         ssleep(QL4_LOCK_DRVR_SLEEP);
 994                         if (drvr_wait) {
 995                                 DEBUG2(printk("scsi%ld: %s: Waiting for "
 996                                               "Global Init Semaphore(%d)...\n",
 997                                               a->host_no,
 998                                               __func__, drvr_wait));
 999                         }
1000                         drvr_wait -= QL4_LOCK_DRVR_SLEEP;
1001                 } else {
1002                         DEBUG2(printk("scsi%ld: %s: Global Init Semaphore "
1003                                       "acquired\n", a->host_no, __func__));
1004                         return QLA_SUCCESS;
1005                 }
1006         }
1007         return QLA_ERROR;
1008 }
1009
1010 /**
1011  * qla4xxx_start_firmware - starts qla4xxx firmware
1012  * @ha: Pointer to host adapter structure.
1013  *
1014  * This routine performs the necessary steps to start the firmware for
1015  * the QLA4010 adapter.
1016  **/
1017 static int qla4xxx_start_firmware(struct scsi_qla_host *ha)
1018 {
1019         unsigned long flags = 0;
1020         uint32_t mbox_status;
1021         int status = QLA_ERROR;
1022         int soft_reset = 1;
1023         int config_chip = 0;
1024
1025         if (is_qla4022(ha) | is_qla4032(ha))
1026                 ql4xxx_set_mac_number(ha);
1027
1028         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
1029                 return QLA_ERROR;
1030
1031         spin_lock_irqsave(&ha->hardware_lock, flags);
1032
1033         DEBUG2(printk("scsi%ld: %s: port_ctrl   = 0x%08X\n", ha->host_no,
1034                       __func__, readw(isp_port_ctrl(ha))));
1035         DEBUG(printk("scsi%ld: %s: port_status = 0x%08X\n", ha->host_no,
1036                      __func__, readw(isp_port_status(ha))));
1037
1038         /* Is Hardware already initialized? */
1039         if ((readw(isp_port_ctrl(ha)) & 0x8000) != 0) {
1040                 DEBUG(printk("scsi%ld: %s: Hardware has already been "
1041                              "initialized\n", ha->host_no, __func__));
1042
1043                 /* Receive firmware boot acknowledgement */
1044                 mbox_status = readw(&ha->reg->mailbox[0]);
1045
1046                 DEBUG2(printk("scsi%ld: %s: H/W Config complete - mbox[0]= "
1047                               "0x%x\n", ha->host_no, __func__, mbox_status));
1048
1049                 /* Is firmware already booted? */
1050                 if (mbox_status == 0) {
1051                         /* F/W not running, must be config by net driver */
1052                         config_chip = 1;
1053                         soft_reset = 0;
1054                 } else {
1055                         writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
1056                                &ha->reg->ctrl_status);
1057                         readl(&ha->reg->ctrl_status);
1058                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1059                         if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
1060                                 DEBUG2(printk("scsi%ld: %s: Get firmware "
1061                                               "state -- state = 0x%x\n",
1062                                               ha->host_no,
1063                                               __func__, ha->firmware_state));
1064                                 /* F/W is running */
1065                                 if (ha->firmware_state &
1066                                     FW_STATE_CONFIG_WAIT) {
1067                                         DEBUG2(printk("scsi%ld: %s: Firmware "
1068                                                       "in known state -- "
1069                                                       "config and "
1070                                                       "boot, state = 0x%x\n",
1071                                                       ha->host_no, __func__,
1072                                                       ha->firmware_state));
1073                                         config_chip = 1;
1074                                         soft_reset = 0;
1075                                 }
1076                         } else {
1077                                 DEBUG2(printk("scsi%ld: %s: Firmware in "
1078                                               "unknown state -- resetting,"
1079                                               " state = "
1080                                               "0x%x\n", ha->host_no, __func__,
1081                                               ha->firmware_state));
1082                         }
1083                         spin_lock_irqsave(&ha->hardware_lock, flags);
1084                 }
1085         } else {
1086                 DEBUG(printk("scsi%ld: %s: H/W initialization hasn't been "
1087                              "started - resetting\n", ha->host_no, __func__));
1088         }
1089         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1090
1091         DEBUG(printk("scsi%ld: %s: Flags soft_rest=%d, config= %d\n ",
1092                      ha->host_no, __func__, soft_reset, config_chip));
1093         if (soft_reset) {
1094                 DEBUG(printk("scsi%ld: %s: Issue Soft Reset\n", ha->host_no,
1095                              __func__));
1096                 status = qla4xxx_soft_reset(ha);
1097                 if (status == QLA_ERROR) {
1098                         DEBUG(printk("scsi%d: %s: Soft Reset failed!\n",
1099                                      ha->host_no, __func__));
1100                         ql4xxx_unlock_drvr(ha);
1101                         return QLA_ERROR;
1102                 }
1103                 config_chip = 1;
1104
1105                 /* Reset clears the semaphore, so acquire again */
1106                 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
1107                         return QLA_ERROR;
1108         }
1109
1110         if (config_chip) {
1111                 if ((status = qla4xxx_config_nvram(ha)) == QLA_SUCCESS)
1112                         status = qla4xxx_start_firmware_from_flash(ha);
1113         }
1114
1115         ql4xxx_unlock_drvr(ha);
1116         if (status == QLA_SUCCESS) {
1117                 qla4xxx_get_fw_version(ha);
1118                 if (test_and_clear_bit(AF_GET_CRASH_RECORD, &ha->flags))
1119                         qla4xxx_get_crash_record(ha);
1120         } else {
1121                 DEBUG(printk("scsi%ld: %s: Firmware has NOT started\n",
1122                              ha->host_no, __func__));
1123         }
1124         return status;
1125 }
1126
1127
1128 /**
1129  * qla4xxx_initialize_adapter - initiailizes hba
1130  * @ha: Pointer to host adapter structure.
1131  * @renew_ddb_list: Indicates what to do with the adapter's ddb list
1132  *      after adapter recovery has completed.
1133  *      0=preserve ddb list, 1=destroy and rebuild ddb list
1134  *
1135  * This routine parforms all of the steps necessary to initialize the adapter.
1136  *
1137  **/
1138 int qla4xxx_initialize_adapter(struct scsi_qla_host *ha,
1139                                uint8_t renew_ddb_list)
1140 {
1141         int status = QLA_ERROR;
1142         int8_t ip_address[IP_ADDR_LEN] = {0} ;
1143
1144         ha->eeprom_cmd_data = 0;
1145
1146         qla4x00_pci_config(ha);
1147
1148         qla4xxx_disable_intrs(ha);
1149
1150         /* Initialize the Host adapter request/response queues and firmware */
1151         if (qla4xxx_start_firmware(ha) == QLA_ERROR)
1152                 goto exit_init_hba;
1153
1154         if (qla4xxx_validate_mac_address(ha) == QLA_ERROR)
1155                 goto exit_init_hba;
1156
1157         if (qla4xxx_init_local_data(ha) == QLA_ERROR)
1158                 goto exit_init_hba;
1159
1160         status = qla4xxx_init_firmware(ha);
1161         if (status == QLA_ERROR)
1162                 goto exit_init_hba;
1163
1164         /*
1165          * FW is waiting to get an IP address from DHCP server: Skip building
1166          * the ddb_list and wait for DHCP lease acquired aen to come in
1167          * followed by 0x8014 aen" to trigger the tgt discovery process.
1168          */
1169         if (ha->firmware_state & FW_STATE_DHCP_IN_PROGRESS)
1170                 goto exit_init_online;
1171
1172         /* Skip device discovery if ip and subnet is zero */
1173         if (memcmp(ha->ip_address, ip_address, IP_ADDR_LEN) == 0 ||
1174             memcmp(ha->subnet_mask, ip_address, IP_ADDR_LEN) == 0)
1175                 goto exit_init_online;
1176
1177         if (renew_ddb_list == PRESERVE_DDB_LIST) {
1178                 /*
1179                  * We want to preserve lun states (i.e. suspended, etc.)
1180                  * for recovery initiated by the driver.  So just update
1181                  * the device states for the existing ddb_list.
1182                  */
1183                 qla4xxx_reinitialize_ddb_list(ha);
1184         } else if (renew_ddb_list == REBUILD_DDB_LIST) {
1185                 /*
1186                  * We want to build the ddb_list from scratch during
1187                  * driver initialization and recovery initiated by the
1188                  * INT_HBA_RESET IOCTL.
1189                  */
1190                 status = qla4xxx_initialize_ddb_list(ha);
1191                 if (status == QLA_ERROR) {
1192                         DEBUG2(printk("%s(%ld) Error occurred during build"
1193                                       "ddb list\n", __func__, ha->host_no));
1194                         goto exit_init_hba;
1195                 }
1196
1197         }
1198         if (!ha->tot_ddbs) {
1199                 DEBUG2(printk("scsi%ld: Failed to initialize devices or none "
1200                               "present in Firmware device database\n",
1201                               ha->host_no));
1202         }
1203
1204 exit_init_online:
1205         set_bit(AF_ONLINE, &ha->flags);
1206 exit_init_hba:
1207         return status;
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         uint32_t new_tgt;
1222
1223         /* First allocate a device structure */
1224         ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index, &new_tgt);
1225         if (ddb_entry == NULL) {
1226                 DEBUG2(printk(KERN_WARNING
1227                               "scsi%ld: Unable to allocate memory to add "
1228                               "fw_ddb_index %d\n", ha->host_no, fw_ddb_index));
1229                 return;
1230         }
1231
1232         if (!new_tgt && (ddb_entry->fw_ddb_index != fw_ddb_index)) {
1233                 /* Target has been bound to a new fw_ddb_index */
1234                 qla4xxx_free_ddb(ha, ddb_entry);
1235                 ddb_entry = qla4xxx_alloc_ddb(ha, fw_ddb_index);
1236                 if (ddb_entry == NULL) {
1237                         DEBUG2(printk(KERN_WARNING
1238                                 "scsi%ld: Unable to allocate memory"
1239                                 " to add fw_ddb_index %d\n",
1240                                 ha->host_no, fw_ddb_index));
1241                         return;
1242                 }
1243         }
1244         if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
1245                                     QLA_ERROR) {
1246                 ha->fw_ddb_index_map[fw_ddb_index] =
1247                                         (struct ddb_entry *)INVALID_ENTRY;
1248                 DEBUG2(printk(KERN_WARNING
1249                               "scsi%ld: failed to add new device at index "
1250                               "[%d]\n Unable to retrieve fw ddb entry\n",
1251                               ha->host_no, fw_ddb_index));
1252                 qla4xxx_free_ddb(ha, ddb_entry);
1253                 return;
1254         }
1255
1256         if (qla4xxx_add_sess(ddb_entry)) {
1257                 DEBUG2(printk(KERN_WARNING
1258                               "scsi%ld: failed to add new device at index "
1259                               "[%d]\n Unable to add connection and session\n",
1260                               ha->host_no, fw_ddb_index));
1261                 qla4xxx_free_ddb(ha, ddb_entry);
1262         }
1263 }
1264
1265 /**
1266  * qla4xxx_process_ddb_changed - process ddb state change
1267  * @ha - Pointer to host adapter structure.
1268  * @fw_ddb_index - Firmware's device database index
1269  * @state - Device state
1270  *
1271  * This routine processes a Decive Database Changed AEN Event.
1272  **/
1273 int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha,
1274                                 uint32_t fw_ddb_index, uint32_t state)
1275 {
1276         struct ddb_entry * ddb_entry;
1277         uint32_t old_fw_ddb_device_state;
1278
1279         /* check for out of range index */
1280         if (fw_ddb_index >= MAX_DDB_ENTRIES)
1281                 return QLA_ERROR;
1282
1283         /* Get the corresponging ddb entry */
1284         ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
1285         /* Device does not currently exist in our database. */
1286         if (ddb_entry == NULL) {
1287                 if (state == DDB_DS_SESSION_ACTIVE)
1288                         qla4xxx_add_device_dynamically(ha, fw_ddb_index);
1289                 return QLA_SUCCESS;
1290         }
1291
1292         /* Device already exists in our database. */
1293         old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
1294         DEBUG2(printk("scsi%ld: %s DDB - old state= 0x%x, new state=0x%x for "
1295                       "index [%d]\n", ha->host_no, __func__,
1296                       ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
1297         if (old_fw_ddb_device_state == state &&
1298             state == DDB_DS_SESSION_ACTIVE) {
1299                 /* Do nothing, state not changed. */
1300                 return QLA_SUCCESS;
1301         }
1302
1303         ddb_entry->fw_ddb_device_state = state;
1304         /* Device is back online. */
1305         if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
1306                 atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
1307                 atomic_set(&ddb_entry->port_down_timer,
1308                            ha->port_down_retry_count);
1309                 atomic_set(&ddb_entry->relogin_retry_count, 0);
1310                 atomic_set(&ddb_entry->relogin_timer, 0);
1311                 clear_bit(DF_RELOGIN, &ddb_entry->flags);
1312                 clear_bit(DF_NO_RELOGIN, &ddb_entry->flags);
1313                 iscsi_unblock_session(ddb_entry->sess);
1314                 iscsi_session_event(ddb_entry->sess,
1315                                     ISCSI_KEVENT_CREATE_SESSION);
1316                 /*
1317                  * Change the lun state to READY in case the lun TIMEOUT before
1318                  * the device came back.
1319                  */
1320         } else {
1321                 /* Device went away, try to relogin. */
1322                 /* Mark device missing */
1323                 if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
1324                         qla4xxx_mark_device_missing(ha, ddb_entry);
1325                 /*
1326                  * Relogin if device state changed to a not active state.
1327                  * However, do not relogin if this aen is a result of an IOCTL
1328                  * logout (DF_NO_RELOGIN) or if this is a discovered device.
1329                  */
1330                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_FAILED &&
1331                     !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
1332                     !test_bit(DF_NO_RELOGIN, &ddb_entry->flags) &&
1333                     !test_bit(DF_ISNS_DISCOVERED, &ddb_entry->flags)) {
1334                         /*
1335                          * This triggers a relogin.  After the relogin_timer
1336                          * expires, the relogin gets scheduled.  We must wait a
1337                          * minimum amount of time since receiving an 0x8014 AEN
1338                          * with failed device_state or a logout response before
1339                          * we can issue another relogin.
1340                          */
1341                         /* Firmware padds this timeout: (time2wait +1).
1342                          * Driver retry to login should be longer than F/W.
1343                          * Otherwise F/W will fail
1344                          * set_ddb() mbx cmd with 0x4005 since it still
1345                          * counting down its time2wait.
1346                          */
1347                         atomic_set(&ddb_entry->relogin_timer, 0);
1348                         atomic_set(&ddb_entry->retry_relogin_timer,
1349                                    ddb_entry->default_time2wait + 4);
1350                 }
1351         }
1352
1353         return QLA_SUCCESS;
1354 }
1355