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 <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                         found++;
 348                         break;
 349                 }
 350         }
 351
 352         if (!found) {
 353                 DEBUG2(printk("scsi%ld: %s: ddb[%d] not found - allocating "
 354                               "new ddb\n", ha->host_no, __func__,
 355                               fw_ddb_index));
 356                 *new_tgt = 1;
 357                 ddb_entry = qla4xxx_alloc_ddb(ha, fw_ddb_index);
 358         }
 359
 360         /* if not found allocate new ddb */
 361         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
 362                           fw_ddb_entry_dma);
 363
 364         return ddb_entry;
 365 }
 366
 367 /**
 368  * qla4xxx_update_ddb_entry - update driver's internal ddb
 369  * @ha: pointer to host adapter structure.
 370  * @ddb_entry: pointer to device database structure to be filled
 371  * @fw_ddb_index: index of the ddb entry in fw ddb table
 372  *
 373  * This routine updates the driver's internal device database entry
 374  * with information retrieved from the firmware's device database
 375  * entry for the specified device. The ddb_entry->fw_ddb_index field
 376  * must be initialized prior to calling this routine
 377  *
 378  **/
 379 static int qla4xxx_update_ddb_entry(struct scsi_qla_host *ha,
 380                                     struct ddb_entry *ddb_entry,
 381                                     uint32_t fw_ddb_index)
 382 {
 383         struct dev_db_entry *fw_ddb_entry = NULL;
 384         dma_addr_t fw_ddb_entry_dma;
 385         int status = QLA_ERROR;
 386
 387         if (ddb_entry == NULL) {
 388                 DEBUG2(printk("scsi%ld: %s: ddb_entry is NULL\n", ha->host_no,
 389                               __func__));
 390                 goto exit_update_ddb;
 391         }
 392
 393         /* Make sure the dma buffer is valid */
 394         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
 395                                           sizeof(*fw_ddb_entry),
 396                                           &fw_ddb_entry_dma, GFP_KERNEL);
 397         if (fw_ddb_entry == NULL) {
 398                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
 399                               ha->host_no, __func__));
 400
 401                 goto exit_update_ddb;
 402         }
 403
 404         if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
 405                                     fw_ddb_entry_dma, NULL, NULL,
 406                                     &ddb_entry->fw_ddb_device_state, NULL,
 407                                     &ddb_entry->tcp_source_port_num,
 408                                     &ddb_entry->connection_id) ==
 409             QLA_ERROR) {
 410                 DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
 411                               "fw_ddb_index %d\n", ha->host_no, __func__,
 412                               fw_ddb_index));
 413
 414                 goto exit_update_ddb;
 415         }
 416
 417         status = QLA_SUCCESS;
 418         ddb_entry->target_session_id = le16_to_cpu(fw_ddb_entry->tsid);
 419         ddb_entry->task_mgmt_timeout =
 420                 le16_to_cpu(fw_ddb_entry->def_timeout);
 421         ddb_entry->CmdSn = 0;
 422         ddb_entry->exe_throttle = le16_to_cpu(fw_ddb_entry->exec_throttle);
 423         ddb_entry->default_relogin_timeout =
 424                 le16_to_cpu(fw_ddb_entry->def_timeout);
 425         ddb_entry->default_time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
 426
 427         /* Update index in case it changed */
 428         ddb_entry->fw_ddb_index = fw_ddb_index;
 429         ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
 430
 431         ddb_entry->port = le16_to_cpu(fw_ddb_entry->port);
 432         ddb_entry->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
 433         memcpy(&ddb_entry->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
 434                min(sizeof(ddb_entry->iscsi_name),
 435                    sizeof(fw_ddb_entry->iscsi_name)));
 436         memcpy(&ddb_entry->ip_addr[0], &fw_ddb_entry->ip_addr[0],
 437                min(sizeof(ddb_entry->ip_addr), sizeof(fw_ddb_entry->ip_addr)));
 438
 439         DEBUG2(printk("scsi%ld: %s: ddb[%d] - State= %x status= %d.\n",
 440                       ha->host_no, __func__, fw_ddb_index,
 441                       ddb_entry->fw_ddb_device_state, status));
 442
 443  exit_update_ddb:
 444         if (fw_ddb_entry)
 445                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
 446                                   fw_ddb_entry, fw_ddb_entry_dma);
 447
 448         return status;
 449 }
 450
 451 /**
 452  * qla4xxx_alloc_ddb - allocate device database entry
 453  * @ha: Pointer to host adapter structure.
 454  * @fw_ddb_index: Firmware's device database index
 455  *
 456  * This routine allocates a ddb_entry, ititializes some values, and
 457  * inserts it into the ddb list.
 458  **/
 459 static struct ddb_entry * qla4xxx_alloc_ddb(struct scsi_qla_host *ha,
 460                                             uint32_t fw_ddb_index)
 461 {
 462         struct ddb_entry *ddb_entry;
 463
 464         DEBUG2(printk("scsi%ld: %s: fw_ddb_index [%d]\n", ha->host_no,
 465                       __func__, fw_ddb_index));
 466
 467         ddb_entry = qla4xxx_alloc_sess(ha);
 468         if (ddb_entry == NULL) {
 469                 DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
 470                               "to add fw_ddb_index [%d]\n",
 471                               ha->host_no, __func__, fw_ddb_index));
 472                 return ddb_entry;
 473         }
 474
 475         ddb_entry->fw_ddb_index = fw_ddb_index;
 476         atomic_set(&ddb_entry->port_down_timer, ha->port_down_retry_count);
 477         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
 478         atomic_set(&ddb_entry->relogin_timer, 0);
 479         atomic_set(&ddb_entry->relogin_retry_count, 0);
 480         atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
 481         list_add_tail(&ddb_entry->list, &ha->ddb_list);
 482         ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
 483         ha->tot_ddbs++;
 484
 485         return ddb_entry;
 486 }
 487
 488 /**
 489  * qla4xxx_configure_ddbs - builds driver ddb list
 490  * @ha: Pointer to host adapter structure.
 491  *
 492  * This routine searches for all valid firmware ddb entries and builds
 493  * an internal ddb list. Ddbs that are considered valid are those with
 494  * a device state of SESSION_ACTIVE.
 495  **/
 496 static int qla4xxx_build_ddb_list(struct scsi_qla_host *ha)
 497 {
 498         int status = QLA_SUCCESS;
 499         uint32_t fw_ddb_index = 0;
 500         uint32_t next_fw_ddb_index = 0;
 501         uint32_t ddb_state;
 502         uint32_t conn_err, err_code;
 503         struct ddb_entry *ddb_entry;
 504         uint32_t new_tgt;
 505
 506         dev_info(&ha->pdev->dev, "Initializing DDBs ...\n");
 507         for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES;
 508              fw_ddb_index = next_fw_ddb_index) {
 509                 /* First, let's see if a device exists here */
 510                 if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, NULL, 0, NULL,
 511                                             &next_fw_ddb_index, &ddb_state,
 512                                             &conn_err, NULL, NULL) ==
 513                     QLA_ERROR) {
 514                         DEBUG2(printk("scsi%ld: %s: get_ddb_entry, "
 515                                       "fw_ddb_index %d failed", ha->host_no,
 516                                       __func__, fw_ddb_index));
 517                         return QLA_ERROR;
 518                 }
 519
 520                 DEBUG2(printk("scsi%ld: %s: Getting DDB[%d] ddbstate=0x%x, "
 521                               "next_fw_ddb_index=%d.\n", ha->host_no, __func__,
 522                               fw_ddb_index, ddb_state, next_fw_ddb_index));
 523
 524                 /* Issue relogin, if necessary. */
 525                 if (ddb_state == DDB_DS_SESSION_FAILED ||
 526                     ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) {
 527                         /* Try and login to device */
 528                         DEBUG2(printk("scsi%ld: %s: Login to DDB[%d]\n",
 529                                       ha->host_no, __func__, fw_ddb_index));
 530                         err_code = ((conn_err & 0x00ff0000) >> 16);
 531                         if (err_code == 0x1c || err_code == 0x06) {
 532                                 DEBUG2(printk("scsi%ld: %s send target "
 533                                               "completed "
 534                                               "or access denied failure\n",
 535                                               ha->host_no, __func__));
 536                         } else {
 537                                 qla4xxx_set_ddb_entry(ha, fw_ddb_index, 0);
 538                                 if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index,
 539                                         NULL, 0, NULL, &next_fw_ddb_index,
 540                                         &ddb_state, &conn_err, NULL, NULL)
 541                                         == QLA_ERROR) {
 542                                         DEBUG2(printk("scsi%ld: %s:"
 543                                                 "get_ddb_entry %d failed\n",
 544                                                 ha->host_no,
 545                                                 __func__, fw_ddb_index));
 546                                         return QLA_ERROR;
 547                                 }
 548                         }
 549                 }
 550
 551                 if (ddb_state != DDB_DS_SESSION_ACTIVE)
 552                         goto next_one;
 553                 /*
 554                  * if fw_ddb with session active state found,
 555                  * add to ddb_list
 556                  */
 557                 DEBUG2(printk("scsi%ld: %s: DDB[%d] added to list\n",
 558                               ha->host_no, __func__, fw_ddb_index));
 559
 560                 /* Add DDB to internal our ddb list. */
 561                 ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index, &new_tgt);
 562                 if (ddb_entry == NULL) {
 563                         DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
 564                                       "for device at fw_ddb_index %d\n",
 565                                       ha->host_no, __func__, fw_ddb_index));
 566                         return QLA_ERROR;
 567                 }
 568                 /* Fill in the device structure */
 569                 if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
 570                     QLA_ERROR) {
 571                         ha->fw_ddb_index_map[fw_ddb_index] =
 572                                 (struct ddb_entry *)INVALID_ENTRY;
 573
 574
 575                         DEBUG2(printk("scsi%ld: %s: update_ddb_entry failed "
 576                                       "for fw_ddb_index %d.\n",
 577                                       ha->host_no, __func__, fw_ddb_index));
 578                         return QLA_ERROR;
 579                 }
 580
 581 next_one:
 582                 /* We know we've reached the last device when
 583                  * next_fw_ddb_index is 0 */
 584                 if (next_fw_ddb_index == 0)
 585                         break;
 586         }
 587
 588         dev_info(&ha->pdev->dev, "DDB list done..\n");
 589
 590         return status;
 591 }
 592
 593 struct qla4_relog_scan {
 594         int halt_wait;
 595         uint32_t conn_err;
 596         uint32_t err_code;
 597         uint32_t fw_ddb_index;
 598         uint32_t next_fw_ddb_index;
 599         uint32_t fw_ddb_device_state;
 600 };
 601
 602 static int qla4_test_rdy(struct scsi_qla_host *ha, struct qla4_relog_scan *rs)
 603 {
 604         struct ddb_entry *ddb_entry;
 605
 606         /*
 607          * Don't want to do a relogin if connection
 608          * error is 0x1c.
 609          */
 610         rs->err_code = ((rs->conn_err & 0x00ff0000) >> 16);
 611         if (rs->err_code == 0x1c || rs->err_code == 0x06) {
 612                 DEBUG2(printk(
 613                                "scsi%ld: %s send target"
 614                                " completed or "
 615                                "access denied failure\n",
 616                                ha->host_no, __func__));
 617         } else {
 618                 /* We either have a device that is in
 619                  * the process of relogging in or a
 620                  * device that is waiting to be
 621                  * relogged in */
 622                 rs->halt_wait = 0;
 623
 624                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha,
 625                                                            rs->fw_ddb_index);
 626                 if (ddb_entry == NULL)
 627                         return QLA_ERROR;
 628
 629                 if (ddb_entry->dev_scan_wait_to_start_relogin != 0
 630                     && time_after_eq(jiffies,
 631                                      ddb_entry->
 632                                      dev_scan_wait_to_start_relogin))
 633                 {
 634                         ddb_entry->dev_scan_wait_to_start_relogin = 0;
 635                         qla4xxx_set_ddb_entry(ha, rs->fw_ddb_index, 0);
 636                 }
 637         }
 638         return QLA_SUCCESS;
 639 }
 640
 641 static int qla4_scan_for_relogin(struct scsi_qla_host *ha,
 642                                  struct qla4_relog_scan *rs)
 643 {
 644         int error;
 645
 646         /* scan for relogins
 647          * ----------------- */
 648         for (rs->fw_ddb_index = 0; rs->fw_ddb_index < MAX_DDB_ENTRIES;
 649              rs->fw_ddb_index = rs->next_fw_ddb_index) {
 650                 if (qla4xxx_get_fwddb_entry(ha, rs->fw_ddb_index, NULL, 0,
 651                                             NULL, &rs->next_fw_ddb_index,
 652                                             &rs->fw_ddb_device_state,
 653                                             &rs->conn_err, NULL, NULL)
 654                     == QLA_ERROR)
 655                         return QLA_ERROR;
 656
 657                 if (rs->fw_ddb_device_state == DDB_DS_LOGIN_IN_PROCESS)
 658                         rs->halt_wait = 0;
 659
 660                 if (rs->fw_ddb_device_state == DDB_DS_SESSION_FAILED ||
 661                     rs->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE) {
 662                         error = qla4_test_rdy(ha, rs);
 663                         if (error)
 664                                 return error;
 665                 }
 666
 667                 /* We know we've reached the last device when
 668                  * next_fw_ddb_index is 0 */
 669                 if (rs->next_fw_ddb_index == 0)
 670                         break;
 671         }
 672         return QLA_SUCCESS;
 673 }
 674
 675 /**
 676  * qla4xxx_devices_ready - wait for target devices to be logged in
 677  * @ha: pointer to adapter structure
 678  *
 679  * This routine waits up to ql4xdiscoverywait seconds
 680  * F/W database during driver load time.
 681  **/
 682 static int qla4xxx_devices_ready(struct scsi_qla_host *ha)
 683 {
 684         int error;
 685         unsigned long discovery_wtime;
 686         struct qla4_relog_scan rs;
 687
 688         discovery_wtime = jiffies + (ql4xdiscoverywait * HZ);
 689
 690         DEBUG(printk("Waiting (%d) for devices ...\n", ql4xdiscoverywait));
 691         do {
 692                 /* poll for AEN. */
 693                 qla4xxx_get_firmware_state(ha);
 694                 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) {
 695                         /* Set time-between-relogin timer */
 696                         qla4xxx_process_aen(ha, RELOGIN_DDB_CHANGED_AENS);
 697                 }
 698
 699                 /* if no relogins active or needed, halt discvery wait */
 700                 rs.halt_wait = 1;
 701
 702                 error = qla4_scan_for_relogin(ha, &rs);
 703
 704                 if (rs.halt_wait) {
 705                         DEBUG2(printk("scsi%ld: %s: Delay halted.  Devices "
 706                                       "Ready.\n", ha->host_no, __func__));
 707                         return QLA_SUCCESS;
 708                 }
 709
 710                 msleep(2000);
 711         } while (!time_after_eq(jiffies, discovery_wtime));
 712
 713         DEBUG3(qla4xxx_get_conn_event_log(ha));
 714
 715         return QLA_SUCCESS;
 716 }
 717
 718 static void qla4xxx_flush_AENS(struct scsi_qla_host *ha)
 719 {
 720         unsigned long wtime;
 721
 722         /* Flush the 0x8014 AEN from the firmware as a result of
 723          * Auto connect. We are basically doing get_firmware_ddb()
 724          * to determine whether we need to log back in or not.
 725          *  Trying to do a set ddb before we have processed 0x8014
 726          *  will result in another set_ddb() for the same ddb. In other
 727          *  words there will be stale entries in the aen_q.
 728          */
 729         wtime = jiffies + (2 * HZ);
 730         do {
 731                 if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS)
 732                         if (ha->firmware_state & (BIT_2 | BIT_0))
 733                                 return;
 734
 735                 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
 736                         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
 737
 738                 msleep(1000);
 739         } while (!time_after_eq(jiffies, wtime));
 740
 741 }
 742
 743 static int qla4xxx_initialize_ddb_list(struct scsi_qla_host *ha)
 744 {
 745         uint16_t fw_ddb_index;
 746         int status = QLA_SUCCESS;
 747
 748         /* free the ddb list if is not empty */
 749         if (!list_empty(&ha->ddb_list))
 750                 qla4xxx_free_ddb_list(ha);
 751
 752         for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES; fw_ddb_index++)
 753                 ha->fw_ddb_index_map[fw_ddb_index] =
 754                         (struct ddb_entry *)INVALID_ENTRY;
 755
 756         ha->tot_ddbs = 0;
 757
 758         qla4xxx_flush_AENS(ha);
 759
 760         /*
 761          * First perform device discovery for active
 762          * fw ddb indexes and build
 763          * ddb list.
 764          */
 765         if ((status = qla4xxx_build_ddb_list(ha)) == QLA_ERROR)
 766                 return status;
 767
 768         /* Wait for an AEN */
 769         qla4xxx_devices_ready(ha);
 770
 771         /*
 772          * Targets can come online after the inital discovery, so processing
 773          * the aens here will catch them.
 774          */
 775         if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
 776                 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
 777
 778         return status;
 779 }
 780
 781 /**
 782  * qla4xxx_update_ddb_list - update the driver ddb list
 783  * @ha: pointer to host adapter structure.
 784  *
 785  * This routine obtains device information from the F/W database after
 786  * firmware or adapter resets.  The device table is preserved.
 787  **/
 788 int qla4xxx_reinitialize_ddb_list(struct scsi_qla_host *ha)
 789 {
 790         int status = QLA_SUCCESS;
 791         struct ddb_entry *ddb_entry, *detemp;
 792
 793         /* Update the device information for all devices. */
 794         list_for_each_entry_safe(ddb_entry, detemp, &ha->ddb_list, list) {
 795                 qla4xxx_update_ddb_entry(ha, ddb_entry,
 796                                          ddb_entry->fw_ddb_index);
 797                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
 798                         atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
 799                         DEBUG2(printk ("scsi%ld: %s: ddb index [%d] marked "
 800                                        "ONLINE\n", ha->host_no, __func__,
 801                                        ddb_entry->fw_ddb_index));
 802                 } else if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
 803                         qla4xxx_mark_device_missing(ha, ddb_entry);
 804         }
 805         return status;
 806 }
 807
 808 /**
 809  * qla4xxx_relogin_device - re-establish session
 810  * @ha: Pointer to host adapter structure.
 811  * @ddb_entry: Pointer to device database entry
 812  *
 813  * This routine does a session relogin with the specified device.
 814  * The ddb entry must be assigned prior to making this call.
 815  **/
 816 int qla4xxx_relogin_device(struct scsi_qla_host *ha,
 817                            struct ddb_entry * ddb_entry)
 818 {
 819         uint16_t relogin_timer;
 820
 821         relogin_timer = max(ddb_entry->default_relogin_timeout,
 822                             (uint16_t)RELOGIN_TOV);
 823         atomic_set(&ddb_entry->relogin_timer, relogin_timer);
 824
 825         DEBUG2(printk("scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
 826                       ddb_entry->fw_ddb_index, relogin_timer));
 827
 828         qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index, 0);
 829
 830         return QLA_SUCCESS;
 831 }
 832
 833 static int qla4xxx_config_nvram(struct scsi_qla_host *ha)
 834 {
 835         unsigned long flags;
 836         union external_hw_config_reg extHwConfig;
 837
 838         DEBUG2(printk("scsi%ld: %s: Get EEProm parameters \n", ha->host_no,
 839                       __func__));
 840         if (ql4xxx_lock_flash(ha) != QLA_SUCCESS)
 841                 return (QLA_ERROR);
 842         if (ql4xxx_lock_nvram(ha) != QLA_SUCCESS) {
 843                 ql4xxx_unlock_flash(ha);
 844                 return (QLA_ERROR);
 845         }
 846
 847         /* Get EEPRom Parameters from NVRAM and validate */
 848         dev_info(&ha->pdev->dev, "Configuring NVRAM ...\n");
 849         if (qla4xxx_is_nvram_configuration_valid(ha) == QLA_SUCCESS) {
 850                 spin_lock_irqsave(&ha->hardware_lock, flags);
 851                 extHwConfig.Asuint32_t =
 852                         rd_nvram_word(ha, eeprom_ext_hw_conf_offset(ha));
 853                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 854         } else {
 855                 /*
 856                  * QLogic adapters should always have a valid NVRAM.
 857                  * If not valid, do not load.
 858                  */
 859                 dev_warn(&ha->pdev->dev,
 860                            "scsi%ld: %s: EEProm checksum invalid.  "
 861                            "Please update your EEPROM\n", ha->host_no,
 862                            __func__);
 863
 864                 /* set defaults */
 865                 if (is_qla4010(ha))
 866                         extHwConfig.Asuint32_t = 0x1912;
 867                 else if (is_qla4022(ha) | is_qla4032(ha))
 868                         extHwConfig.Asuint32_t = 0x0023;
 869         }
 870         DEBUG(printk("scsi%ld: %s: Setting extHwConfig to 0xFFFF%04x\n",
 871                      ha->host_no, __func__, extHwConfig.Asuint32_t));
 872
 873         spin_lock_irqsave(&ha->hardware_lock, flags);
 874         writel((0xFFFF << 16) | extHwConfig.Asuint32_t, isp_ext_hw_conf(ha));
 875         readl(isp_ext_hw_conf(ha));
 876         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 877
 878         ql4xxx_unlock_nvram(ha);
 879         ql4xxx_unlock_flash(ha);
 880
 881         return (QLA_SUCCESS);
 882 }
 883
 884 static void qla4x00_pci_config(struct scsi_qla_host *ha)
 885 {
 886         uint16_t w;
 887         int status;
 888
 889         dev_info(&ha->pdev->dev, "Configuring PCI space...\n");
 890
 891         pci_set_master(ha->pdev);
 892         status = pci_set_mwi(ha->pdev);
 893         /*
 894          * We want to respect framework's setting of PCI configuration space
 895          * command register and also want to make sure that all bits of
 896          * interest to us are properly set in command register.
 897          */
 898         pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
 899         w |= PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
 900         w &= ~PCI_COMMAND_INTX_DISABLE;
 901         pci_write_config_word(ha->pdev, PCI_COMMAND, w);
 902 }
 903
 904 static int qla4xxx_start_firmware_from_flash(struct scsi_qla_host *ha)
 905 {
 906         int status = QLA_ERROR;
 907         uint32_t max_wait_time;
 908         unsigned long flags;
 909         uint32_t mbox_status;
 910
 911         dev_info(&ha->pdev->dev, "Starting firmware ...\n");
 912
 913         /*
 914          * Start firmware from flash ROM
 915          *
 916          * WORKAROUND: Stuff a non-constant value that the firmware can
 917          * use as a seed for a random number generator in MB7 prior to
 918          * setting BOOT_ENABLE.  Fixes problem where the TCP
 919          * connections use the same TCP ports after each reboot,
 920          * causing some connections to not get re-established.
 921          */
 922         DEBUG(printk("scsi%d: %s: Start firmware from flash ROM\n",
 923                      ha->host_no, __func__));
 924
 925         spin_lock_irqsave(&ha->hardware_lock, flags);
 926         writel(jiffies, &ha->reg->mailbox[7]);
 927         if (is_qla4022(ha) | is_qla4032(ha))
 928                 writel(set_rmask(NVR_WRITE_ENABLE),
 929                        &ha->reg->u1.isp4022.nvram);
 930
 931         writel(2, &ha->reg->mailbox[6]);
 932         readl(&ha->reg->mailbox[6]);
 933
 934         writel(set_rmask(CSR_BOOT_ENABLE), &ha->reg->ctrl_status);
 935         readl(&ha->reg->ctrl_status);
 936         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 937
 938         /* Wait for firmware to come UP. */
 939         max_wait_time = FIRMWARE_UP_TOV * 4;
 940         do {
 941                 uint32_t ctrl_status;
 942
 943                 spin_lock_irqsave(&ha->hardware_lock, flags);
 944                 ctrl_status = readw(&ha->reg->ctrl_status);
 945                 mbox_status = readw(&ha->reg->mailbox[0]);
 946                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 947
 948                 if (ctrl_status & set_rmask(CSR_SCSI_PROCESSOR_INTR))
 949                         break;
 950                 if (mbox_status == MBOX_STS_COMMAND_COMPLETE)
 951                         break;
 952
 953                 DEBUG2(printk("scsi%ld: %s: Waiting for boot firmware to "
 954                               "complete... ctrl_sts=0x%x, remaining=%d\n",
 955                               ha->host_no, __func__, ctrl_status,
 956                               max_wait_time));
 957
 958                 msleep(250);
 959         } while ((max_wait_time--));
 960
 961         if (mbox_status == MBOX_STS_COMMAND_COMPLETE) {
 962                 DEBUG(printk("scsi%ld: %s: Firmware has started\n",
 963                              ha->host_no, __func__));
 964
 965                 spin_lock_irqsave(&ha->hardware_lock, flags);
 966                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
 967                        &ha->reg->ctrl_status);
 968                 readl(&ha->reg->ctrl_status);
 969                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 970
 971                 status = QLA_SUCCESS;
 972         } else {
 973                 printk(KERN_INFO "scsi%ld: %s: Boot firmware failed "
 974                        "-  mbox status 0x%x\n", ha->host_no, __func__,
 975                        mbox_status);
 976                 status = QLA_ERROR;
 977         }
 978         return status;
 979 }
 980
 981 int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
 982 {
 983 #define QL4_LOCK_DRVR_WAIT      60
 984 #define QL4_LOCK_DRVR_SLEEP     1
 985
 986         int drvr_wait = QL4_LOCK_DRVR_WAIT;
 987         while (drvr_wait) {
 988                 if (ql4xxx_lock_drvr(a) == 0) {
 989                         ssleep(QL4_LOCK_DRVR_SLEEP);
 990                         if (drvr_wait) {
 991                                 DEBUG2(printk("scsi%ld: %s: Waiting for "
 992                                               "Global Init Semaphore(%d)...\n",
 993                                               a->host_no,
 994                                               __func__, drvr_wait));
 995                         }
 996                         drvr_wait -= QL4_LOCK_DRVR_SLEEP;
 997                 } else {
 998                         DEBUG2(printk("scsi%ld: %s: Global Init Semaphore "
 999                                       "acquired\n", a->host_no, __func__));
1000                         return QLA_SUCCESS;
1001                 }
1002         }
1003         return QLA_ERROR;
1004 }
1005
1006 /**
1007  * qla4xxx_start_firmware - starts qla4xxx firmware
1008  * @ha: Pointer to host adapter structure.
1009  *
1010  * This routine performs the necessary steps to start the firmware for
1011  * the QLA4010 adapter.
1012  **/
1013 static int qla4xxx_start_firmware(struct scsi_qla_host *ha)
1014 {
1015         unsigned long flags = 0;
1016         uint32_t mbox_status;
1017         int status = QLA_ERROR;
1018         int soft_reset = 1;
1019         int config_chip = 0;
1020
1021         if (is_qla4022(ha) | is_qla4032(ha))
1022                 ql4xxx_set_mac_number(ha);
1023
1024         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
1025                 return QLA_ERROR;
1026
1027         spin_lock_irqsave(&ha->hardware_lock, flags);
1028
1029         DEBUG2(printk("scsi%ld: %s: port_ctrl   = 0x%08X\n", ha->host_no,
1030                       __func__, readw(isp_port_ctrl(ha))));
1031         DEBUG(printk("scsi%ld: %s: port_status = 0x%08X\n", ha->host_no,
1032                      __func__, readw(isp_port_status(ha))));
1033
1034         /* Is Hardware already initialized? */
1035         if ((readw(isp_port_ctrl(ha)) & 0x8000) != 0) {
1036                 DEBUG(printk("scsi%ld: %s: Hardware has already been "
1037                              "initialized\n", ha->host_no, __func__));
1038
1039                 /* Receive firmware boot acknowledgement */
1040                 mbox_status = readw(&ha->reg->mailbox[0]);
1041
1042                 DEBUG2(printk("scsi%ld: %s: H/W Config complete - mbox[0]= "
1043                               "0x%x\n", ha->host_no, __func__, mbox_status));
1044
1045                 /* Is firmware already booted? */
1046                 if (mbox_status == 0) {
1047                         /* F/W not running, must be config by net driver */
1048                         config_chip = 1;
1049                         soft_reset = 0;
1050                 } else {
1051                         writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
1052                                &ha->reg->ctrl_status);
1053                         readl(&ha->reg->ctrl_status);
1054                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1055                         if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
1056                                 DEBUG2(printk("scsi%ld: %s: Get firmware "
1057                                               "state -- state = 0x%x\n",
1058                                               ha->host_no,
1059                                               __func__, ha->firmware_state));
1060                                 /* F/W is running */
1061                                 if (ha->firmware_state &
1062                                     FW_STATE_CONFIG_WAIT) {
1063                                         DEBUG2(printk("scsi%ld: %s: Firmware "
1064                                                       "in known state -- "
1065                                                       "config and "
1066                                                       "boot, state = 0x%x\n",
1067                                                       ha->host_no, __func__,
1068                                                       ha->firmware_state));
1069                                         config_chip = 1;
1070                                         soft_reset = 0;
1071                                 }
1072                         } else {
1073                                 DEBUG2(printk("scsi%ld: %s: Firmware in "
1074                                               "unknown state -- resetting,"
1075                                               " state = "
1076                                               "0x%x\n", ha->host_no, __func__,
1077                                               ha->firmware_state));
1078                         }
1079                         spin_lock_irqsave(&ha->hardware_lock, flags);
1080                 }
1081         } else {
1082                 DEBUG(printk("scsi%ld: %s: H/W initialization hasn't been "
1083                              "started - resetting\n", ha->host_no, __func__));
1084         }
1085         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1086
1087         DEBUG(printk("scsi%ld: %s: Flags soft_rest=%d, config= %d\n ",
1088                      ha->host_no, __func__, soft_reset, config_chip));
1089         if (soft_reset) {
1090                 DEBUG(printk("scsi%ld: %s: Issue Soft Reset\n", ha->host_no,
1091                              __func__));
1092                 status = qla4xxx_soft_reset(ha);
1093                 if (status == QLA_ERROR) {
1094                         DEBUG(printk("scsi%d: %s: Soft Reset failed!\n",
1095                                      ha->host_no, __func__));
1096                         ql4xxx_unlock_drvr(ha);
1097                         return QLA_ERROR;
1098                 }
1099                 config_chip = 1;
1100
1101                 /* Reset clears the semaphore, so acquire again */
1102                 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
1103                         return QLA_ERROR;
1104         }
1105
1106         if (config_chip) {
1107                 if ((status = qla4xxx_config_nvram(ha)) == QLA_SUCCESS)
1108                         status = qla4xxx_start_firmware_from_flash(ha);
1109         }
1110
1111         ql4xxx_unlock_drvr(ha);
1112         if (status == QLA_SUCCESS) {
1113                 qla4xxx_get_fw_version(ha);
1114                 if (test_and_clear_bit(AF_GET_CRASH_RECORD, &ha->flags))
1115                         qla4xxx_get_crash_record(ha);
1116         } else {
1117                 DEBUG(printk("scsi%ld: %s: Firmware has NOT started\n",
1118                              ha->host_no, __func__));
1119         }
1120         return status;
1121 }
1122
1123
1124 /**
1125  * qla4xxx_initialize_adapter - initiailizes hba
1126  * @ha: Pointer to host adapter structure.
1127  * @renew_ddb_list: Indicates what to do with the adapter's ddb list
1128  *      after adapter recovery has completed.
1129  *      0=preserve ddb list, 1=destroy and rebuild ddb list
1130  *
1131  * This routine parforms all of the steps necessary to initialize the adapter.
1132  *
1133  **/
1134 int qla4xxx_initialize_adapter(struct scsi_qla_host *ha,
1135                                uint8_t renew_ddb_list)
1136 {
1137         int status = QLA_ERROR;
1138         int8_t ip_address[IP_ADDR_LEN] = {0} ;
1139
1140         ha->eeprom_cmd_data = 0;
1141
1142         qla4x00_pci_config(ha);
1143
1144         qla4xxx_disable_intrs(ha);
1145
1146         /* Initialize the Host adapter request/response queues and firmware */
1147         if (qla4xxx_start_firmware(ha) == QLA_ERROR)
1148                 goto exit_init_hba;
1149
1150         if (qla4xxx_validate_mac_address(ha) == QLA_ERROR)
1151                 goto exit_init_hba;
1152
1153         if (qla4xxx_init_local_data(ha) == QLA_ERROR)
1154                 goto exit_init_hba;
1155
1156         status = qla4xxx_init_firmware(ha);
1157         if (status == QLA_ERROR)
1158                 goto exit_init_hba;
1159
1160         /*
1161          * FW is waiting to get an IP address from DHCP server: Skip building
1162          * the ddb_list and wait for DHCP lease acquired aen to come in
1163          * followed by 0x8014 aen" to trigger the tgt discovery process.
1164          */
1165         if (ha->firmware_state & FW_STATE_DHCP_IN_PROGRESS)
1166                 goto exit_init_online;
1167
1168         /* Skip device discovery if ip and subnet is zero */
1169         if (memcmp(ha->ip_address, ip_address, IP_ADDR_LEN) == 0 ||
1170             memcmp(ha->subnet_mask, ip_address, IP_ADDR_LEN) == 0)
1171                 goto exit_init_online;
1172
1173         if (renew_ddb_list == PRESERVE_DDB_LIST) {
1174                 /*
1175                  * We want to preserve lun states (i.e. suspended, etc.)
1176                  * for recovery initiated by the driver.  So just update
1177                  * the device states for the existing ddb_list.
1178                  */
1179                 qla4xxx_reinitialize_ddb_list(ha);
1180         } else if (renew_ddb_list == REBUILD_DDB_LIST) {
1181                 /*
1182                  * We want to build the ddb_list from scratch during
1183                  * driver initialization and recovery initiated by the
1184                  * INT_HBA_RESET IOCTL.
1185                  */
1186                 status = qla4xxx_initialize_ddb_list(ha);
1187                 if (status == QLA_ERROR) {
1188                         DEBUG2(printk("%s(%ld) Error occurred during build"
1189                                       "ddb list\n", __func__, ha->host_no));
1190                         goto exit_init_hba;
1191                 }
1192
1193         }
1194         if (!ha->tot_ddbs) {
1195                 DEBUG2(printk("scsi%ld: Failed to initialize devices or none "
1196                               "present in Firmware device database\n",
1197                               ha->host_no));
1198         }
1199
1200 exit_init_online:
1201         set_bit(AF_ONLINE, &ha->flags);
1202 exit_init_hba:
1203         return status;
1204 }
1205
1206 /**
1207  * qla4xxx_add_device_dynamically - ddb addition due to an AEN
1208  * @ha:  Pointer to host adapter structure.
1209  * @fw_ddb_index:  Firmware's device database index
1210  *
1211  * This routine processes adds a device as a result of an 8014h AEN.
1212  **/
1213 static void qla4xxx_add_device_dynamically(struct scsi_qla_host *ha,
1214                                            uint32_t fw_ddb_index)
1215 {
1216         struct ddb_entry * ddb_entry;
1217         uint32_t new_tgt;
1218
1219         /* First allocate a device structure */
1220         ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index, &new_tgt);
1221         if (ddb_entry == NULL) {
1222                 DEBUG2(printk(KERN_WARNING
1223                               "scsi%ld: Unable to allocate memory to add "
1224                               "fw_ddb_index %d\n", ha->host_no, fw_ddb_index));
1225                 return;
1226         }
1227
1228         if (!new_tgt && (ddb_entry->fw_ddb_index != fw_ddb_index)) {
1229                 /* Target has been bound to a new fw_ddb_index */
1230                 qla4xxx_free_ddb(ha, ddb_entry);
1231                 ddb_entry = qla4xxx_alloc_ddb(ha, fw_ddb_index);
1232                 if (ddb_entry == NULL) {
1233                         DEBUG2(printk(KERN_WARNING
1234                                 "scsi%ld: Unable to allocate memory"
1235                                 " to add fw_ddb_index %d\n",
1236                                 ha->host_no, fw_ddb_index));
1237                         return;
1238                 }
1239         }
1240         if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
1241                                     QLA_ERROR) {
1242                 ha->fw_ddb_index_map[fw_ddb_index] =
1243                                         (struct ddb_entry *)INVALID_ENTRY;
1244                 DEBUG2(printk(KERN_WARNING
1245                               "scsi%ld: failed to add new device at index "
1246                               "[%d]\n Unable to retrieve fw ddb entry\n",
1247                               ha->host_no, fw_ddb_index));
1248                 qla4xxx_free_ddb(ha, ddb_entry);
1249                 return;
1250         }
1251
1252         if (qla4xxx_add_sess(ddb_entry)) {
1253                 DEBUG2(printk(KERN_WARNING
1254                               "scsi%ld: failed to add new device at index "
1255                               "[%d]\n Unable to add connection and session\n",
1256                               ha->host_no, fw_ddb_index));
1257                 qla4xxx_free_ddb(ha, ddb_entry);
1258         }
1259 }
1260
1261 /**
1262  * qla4xxx_process_ddb_changed - process ddb state change
1263  * @ha - Pointer to host adapter structure.
1264  * @fw_ddb_index - Firmware's device database index
1265  * @state - Device state
1266  *
1267  * This routine processes a Decive Database Changed AEN Event.
1268  **/
1269 int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha,
1270                                 uint32_t fw_ddb_index, uint32_t state)
1271 {
1272         struct ddb_entry * ddb_entry;
1273         uint32_t old_fw_ddb_device_state;
1274
1275         /* check for out of range index */
1276         if (fw_ddb_index >= MAX_DDB_ENTRIES)
1277                 return QLA_ERROR;
1278
1279         /* Get the corresponging ddb entry */
1280         ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
1281         /* Device does not currently exist in our database. */
1282         if (ddb_entry == NULL) {
1283                 if (state == DDB_DS_SESSION_ACTIVE)
1284                         qla4xxx_add_device_dynamically(ha, fw_ddb_index);
1285                 return QLA_SUCCESS;
1286         }
1287
1288         /* Device already exists in our database. */
1289         old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
1290         DEBUG2(printk("scsi%ld: %s DDB - old state= 0x%x, new state=0x%x for "
1291                       "index [%d]\n", ha->host_no, __func__,
1292                       ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
1293         if (old_fw_ddb_device_state == state &&
1294             state == DDB_DS_SESSION_ACTIVE) {
1295                 /* Do nothing, state not changed. */
1296                 return QLA_SUCCESS;
1297         }
1298
1299         ddb_entry->fw_ddb_device_state = state;
1300         /* Device is back online. */
1301         if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
1302                 atomic_set(&ddb_entry->port_down_timer,
1303                            ha->port_down_retry_count);
1304                 atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
1305                 atomic_set(&ddb_entry->relogin_retry_count, 0);
1306                 atomic_set(&ddb_entry->relogin_timer, 0);
1307                 clear_bit(DF_RELOGIN, &ddb_entry->flags);
1308                 clear_bit(DF_NO_RELOGIN, &ddb_entry->flags);
1309                 iscsi_session_event(ddb_entry->sess,
1310                                     ISCSI_KEVENT_CREATE_SESSION);
1311                 /*
1312                  * Change the lun state to READY in case the lun TIMEOUT before
1313                  * the device came back.
1314                  */
1315         } else {
1316                 /* Device went away, try to relogin. */
1317                 /* Mark device missing */
1318                 if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
1319                         qla4xxx_mark_device_missing(ha, ddb_entry);
1320                 /*
1321                  * Relogin if device state changed to a not active state.
1322                  * However, do not relogin if this aen is a result of an IOCTL
1323                  * logout (DF_NO_RELOGIN) or if this is a discovered device.
1324                  */
1325                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_FAILED &&
1326                     !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
1327                     !test_bit(DF_NO_RELOGIN, &ddb_entry->flags) &&
1328                     !test_bit(DF_ISNS_DISCOVERED, &ddb_entry->flags)) {
1329                         /*
1330                          * This triggers a relogin.  After the relogin_timer
1331                          * expires, the relogin gets scheduled.  We must wait a
1332                          * minimum amount of time since receiving an 0x8014 AEN
1333                          * with failed device_state or a logout response before
1334                          * we can issue another relogin.
1335                          */
1336                         /* Firmware padds this timeout: (time2wait +1).
1337                          * Driver retry to login should be longer than F/W.
1338                          * Otherwise F/W will fail
1339                          * set_ddb() mbx cmd with 0x4005 since it still
1340                          * counting down its time2wait.
1341                          */
1342                         atomic_set(&ddb_entry->relogin_timer, 0);
1343                         atomic_set(&ddb_entry->retry_relogin_timer,
1344                                    ddb_entry->default_time2wait + 4);
1345                 }
1346         }
1347
1348         return QLA_SUCCESS;
1349 }
1350