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 uint8_t
 193 qla4xxx_wait_for_ip_config(struct scsi_qla_host *ha)
 194 {
 195         uint8_t ipv4_wait = 0;
 196         uint8_t ipv6_wait = 0;
 197         int8_t ip_address[IPv6_ADDR_LEN] = {0} ;
 198
 199         /* If both IPv4 & IPv6 are enabled, possibly only one
 200          * IP address may be acquired, so check to see if we
 201          * need to wait for another */
 202         if (is_ipv4_enabled(ha) && is_ipv6_enabled(ha)) {
 203                 if (((ha->addl_fw_state & FW_ADDSTATE_DHCPv4_ENABLED) != 0) &&
 204                     ((ha->addl_fw_state &
 205                                     FW_ADDSTATE_DHCPv4_LEASE_ACQUIRED) == 0)) {
 206                         ipv4_wait = 1;
 207                 }
 208                 if (((ha->ipv6_addl_options &
 209                             IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) != 0) &&
 210                     ((ha->ipv6_link_local_state == IP_ADDRSTATE_ACQUIRING) ||
 211                      (ha->ipv6_addr0_state == IP_ADDRSTATE_ACQUIRING) ||
 212                      (ha->ipv6_addr1_state == IP_ADDRSTATE_ACQUIRING))) {
 213
 214                         ipv6_wait = 1;
 215
 216                         if ((ha->ipv6_link_local_state ==
 217                                                      IP_ADDRSTATE_PREFERRED) ||
 218                             (ha->ipv6_addr0_state == IP_ADDRSTATE_PREFERRED) ||
 219                             (ha->ipv6_addr1_state == IP_ADDRSTATE_PREFERRED)) {
 220                                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
 221                                               "Preferred IP configured."
 222                                               " Don't wait!\n", ha->host_no,
 223                                               __func__));
 224                                 ipv6_wait = 0;
 225                         }
 226                         if (memcmp(&ha->ipv6_default_router_addr, ip_address,
 227                                 IPv6_ADDR_LEN) == 0) {
 228                                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
 229                                               "No Router configured. "
 230                                               "Don't wait!\n", ha->host_no,
 231                                               __func__));
 232                                 ipv6_wait = 0;
 233                         }
 234                         if ((ha->ipv6_default_router_state ==
 235                                                 IPV6_RTRSTATE_MANUAL) &&
 236                             (ha->ipv6_link_local_state ==
 237                                                 IP_ADDRSTATE_TENTATIVE) &&
 238                             (memcmp(&ha->ipv6_link_local_addr,
 239                                     &ha->ipv6_default_router_addr, 4) == 0)) {
 240                                 DEBUG2(printk("scsi%ld: %s: LinkLocal Router & "
 241                                         "IP configured. Don't wait!\n",
 242                                         ha->host_no, __func__));
 243                                 ipv6_wait = 0;
 244                         }
 245                 }
 246                 if (ipv4_wait || ipv6_wait) {
 247                         DEBUG2(printk("scsi%ld: %s: Wait for additional "
 248                                       "IP(s) \"", ha->host_no, __func__));
 249                         if (ipv4_wait)
 250                                 DEBUG2(printk("IPv4 "));
 251                         if (ha->ipv6_link_local_state == IP_ADDRSTATE_ACQUIRING)
 252                                 DEBUG2(printk("IPv6LinkLocal "));
 253                         if (ha->ipv6_addr0_state == IP_ADDRSTATE_ACQUIRING)
 254                                 DEBUG2(printk("IPv6Addr0 "));
 255                         if (ha->ipv6_addr1_state == IP_ADDRSTATE_ACQUIRING)
 256                                 DEBUG2(printk("IPv6Addr1 "));
 257                         DEBUG2(printk("\"\n"));
 258                 }
 259         }
 260
 261         return ipv4_wait|ipv6_wait;
 262 }
 263
 264 static int qla4xxx_fw_ready(struct scsi_qla_host *ha)
 265 {
 266         uint32_t timeout_count;
 267         int ready = 0;
 268
 269         DEBUG2(dev_info(&ha->pdev->dev, "Waiting for Firmware Ready..\n"));
 270         for (timeout_count = ADAPTER_INIT_TOV; timeout_count > 0;
 271              timeout_count--) {
 272                 if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
 273                         qla4xxx_get_dhcp_ip_address(ha);
 274
 275                 /* Get firmware state. */
 276                 if (qla4xxx_get_firmware_state(ha) != QLA_SUCCESS) {
 277                         DEBUG2(printk("scsi%ld: %s: unable to get firmware "
 278                                       "state\n", ha->host_no, __func__));
 279                         break;
 280
 281                 }
 282
 283                 if (ha->firmware_state & FW_STATE_ERROR) {
 284                         DEBUG2(printk("scsi%ld: %s: an unrecoverable error has"
 285                                       " occurred\n", ha->host_no, __func__));
 286                         break;
 287
 288                 }
 289                 if (ha->firmware_state & FW_STATE_CONFIG_WAIT) {
 290                         /*
 291                          * The firmware has not yet been issued an Initialize
 292                          * Firmware command, so issue it now.
 293                          */
 294                         if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR)
 295                                 break;
 296
 297                         /* Go back and test for ready state - no wait. */
 298                         continue;
 299                 }
 300
 301                 if (ha->firmware_state & FW_STATE_WAIT_AUTOCONNECT) {
 302                         DEBUG2(printk(KERN_INFO "scsi%ld: %s: fwstate:"
 303                                       "AUTOCONNECT in progress\n",
 304                                       ha->host_no, __func__));
 305                 }
 306
 307                 if (ha->firmware_state & FW_STATE_CONFIGURING_IP) {
 308                         DEBUG2(printk(KERN_INFO "scsi%ld: %s: fwstate:"
 309                                       " CONFIGURING IP\n",
 310                                       ha->host_no, __func__));
 311                         /*
 312                          * Check for link state after 15 secs and if link is
 313                          * still DOWN then, cable is unplugged. Ignore "DHCP
 314                          * in Progress/CONFIGURING IP" bit to check if firmware
 315                          * is in ready state or not after 15 secs.
 316                          * This is applicable for both 2.x & 3.x firmware
 317                          */
 318                         if (timeout_count <= (ADAPTER_INIT_TOV - 15)) {
 319                                 if (ha->addl_fw_state & FW_ADDSTATE_LINK_UP) {
 320                                         DEBUG2(printk(KERN_INFO "scsi%ld: %s:"
 321                                                   " LINK UP (Cable plugged)\n",
 322                                                   ha->host_no, __func__));
 323                                 } else if (ha->firmware_state &
 324                                           (FW_STATE_CONFIGURING_IP |
 325                                                              FW_STATE_READY)) {
 326                                         DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
 327                                                 "LINK DOWN (Cable unplugged)\n",
 328                                                 ha->host_no, __func__));
 329                                         ha->firmware_state = FW_STATE_READY;
 330                                 }
 331                         }
 332                 }
 333
 334                 if (ha->firmware_state == FW_STATE_READY) {
 335                         /* If DHCP IP Addr is available, retrieve it now. */
 336                         if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR,
 337                                                                 &ha->dpc_flags))
 338                                 qla4xxx_get_dhcp_ip_address(ha);
 339
 340                         if (!qla4xxx_wait_for_ip_config(ha) ||
 341                                                         timeout_count == 1) {
 342                                 DEBUG2(dev_info(&ha->pdev->dev,
 343                                                 "Firmware Ready..\n"));
 344                                 /* The firmware is ready to process SCSI
 345                                    commands. */
 346                                 DEBUG2(dev_info(&ha->pdev->dev,
 347                                         "scsi%ld: %s: MEDIA TYPE"
 348                                         " - %s\n", ha->host_no,
 349                                         __func__, (ha->addl_fw_state &
 350                                         FW_ADDSTATE_OPTICAL_MEDIA)
 351                                         != 0 ? "OPTICAL" : "COPPER"));
 352                                 DEBUG2(dev_info(&ha->pdev->dev,
 353                                         "scsi%ld: %s: DHCPv4 STATE"
 354                                         " Enabled %s\n", ha->host_no,
 355                                          __func__, (ha->addl_fw_state &
 356                                          FW_ADDSTATE_DHCPv4_ENABLED) != 0 ?
 357                                         "YES" : "NO"));
 358                                 DEBUG2(dev_info(&ha->pdev->dev,
 359                                         "scsi%ld: %s: LINK %s\n",
 360                                         ha->host_no, __func__,
 361                                         (ha->addl_fw_state &
 362                                          FW_ADDSTATE_LINK_UP) != 0 ?
 363                                         "UP" : "DOWN"));
 364                                 DEBUG2(dev_info(&ha->pdev->dev,
 365                                         "scsi%ld: %s: iSNS Service "
 366                                         "Started %s\n",
 367                                         ha->host_no, __func__,
 368                                         (ha->addl_fw_state &
 369                                          FW_ADDSTATE_ISNS_SVC_ENABLED) != 0 ?
 370                                         "YES" : "NO"));
 371
 372                                 ready = 1;
 373                                 break;
 374                         }
 375                 }
 376                 DEBUG2(printk("scsi%ld: %s: waiting on fw, state=%x:%x - "
 377                               "seconds expired= %d\n", ha->host_no, __func__,
 378                               ha->firmware_state, ha->addl_fw_state,
 379                               timeout_count));
 380                 if (is_qla4032(ha) &&
 381                         !(ha->addl_fw_state & FW_ADDSTATE_LINK_UP) &&
 382                         (timeout_count < ADAPTER_INIT_TOV - 5)) {
 383                         break;
 384                 }
 385
 386                 msleep(1000);
 387         }                       /* end of for */
 388
 389         if (timeout_count <= 0)
 390                 DEBUG2(printk("scsi%ld: %s: FW Initialization timed out!\n",
 391                               ha->host_no, __func__));
 392
 393         if (ha->firmware_state & FW_STATE_CONFIGURING_IP) {
 394                 DEBUG2(printk("scsi%ld: %s: FW initialized, but is reporting "
 395                               "it's waiting to configure an IP address\n",
 396                                ha->host_no, __func__));
 397                 ready = 1;
 398         } else if (ha->firmware_state & FW_STATE_WAIT_AUTOCONNECT) {
 399                 DEBUG2(printk("scsi%ld: %s: FW initialized, but "
 400                               "auto-discovery still in process\n",
 401                                ha->host_no, __func__));
 402         }
 403
 404         return ready;
 405 }
 406
 407 /**
 408  * qla4xxx_init_firmware - initializes the firmware.
 409  * @ha: pointer to host adapter structure.
 410  *
 411  **/
 412 static int qla4xxx_init_firmware(struct scsi_qla_host *ha)
 413 {
 414         int status = QLA_ERROR;
 415
 416         dev_info(&ha->pdev->dev, "Initializing firmware..\n");
 417         if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR) {
 418                 DEBUG2(printk("scsi%ld: %s: Failed to initialize firmware "
 419                               "control block\n", ha->host_no, __func__));
 420                 return status;
 421         }
 422         if (!qla4xxx_fw_ready(ha))
 423                 return status;
 424
 425         return qla4xxx_get_firmware_status(ha);
 426 }
 427
 428 static struct ddb_entry* qla4xxx_get_ddb_entry(struct scsi_qla_host *ha,
 429                                                 uint32_t fw_ddb_index,
 430                                                 uint32_t *new_tgt)
 431 {
 432         struct dev_db_entry *fw_ddb_entry = NULL;
 433         dma_addr_t fw_ddb_entry_dma;
 434         struct ddb_entry *ddb_entry = NULL;
 435         int found = 0;
 436         uint32_t device_state;
 437
 438         *new_tgt = 0;
 439         /* Make sure the dma buffer is valid */
 440         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
 441                                           sizeof(*fw_ddb_entry),
 442                                           &fw_ddb_entry_dma, GFP_KERNEL);
 443         if (fw_ddb_entry == NULL) {
 444                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
 445                               ha->host_no, __func__));
 446                 return NULL;
 447         }
 448
 449         if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
 450                                     fw_ddb_entry_dma, NULL, NULL,
 451                                     &device_state, NULL, NULL, NULL) ==
 452             QLA_ERROR) {
 453                 DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
 454                               "fw_ddb_index %d\n", ha->host_no, __func__,
 455                               fw_ddb_index));
 456                 return NULL;
 457         }
 458
 459         /* Allocate DDB if not already allocated. */
 460         DEBUG2(printk("scsi%ld: %s: Looking for ddb[%d]\n", ha->host_no,
 461                       __func__, fw_ddb_index));
 462         list_for_each_entry(ddb_entry, &ha->ddb_list, list) {
 463                 if ((memcmp(ddb_entry->iscsi_name, fw_ddb_entry->iscsi_name,
 464                            ISCSI_NAME_SIZE) == 0) &&
 465                         (ddb_entry->tpgt ==
 466                                 le32_to_cpu(fw_ddb_entry->tgt_portal_grp)) &&
 467                         (memcmp(ddb_entry->isid, fw_ddb_entry->isid,
 468                                 sizeof(ddb_entry->isid)) == 0)) {
 469                         found++;
 470                         break;
 471                 }
 472         }
 473
 474         if (!found) {
 475                 DEBUG2(printk("scsi%ld: %s: ddb[%d] not found - allocating "
 476                               "new ddb\n", ha->host_no, __func__,
 477                               fw_ddb_index));
 478                 *new_tgt = 1;
 479                 ddb_entry = qla4xxx_alloc_ddb(ha, fw_ddb_index);
 480         }
 481
 482         /* if not found allocate new ddb */
 483         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
 484                           fw_ddb_entry_dma);
 485
 486         return ddb_entry;
 487 }
 488
 489 /**
 490  * qla4xxx_update_ddb_entry - update driver's internal ddb
 491  * @ha: pointer to host adapter structure.
 492  * @ddb_entry: pointer to device database structure to be filled
 493  * @fw_ddb_index: index of the ddb entry in fw ddb table
 494  *
 495  * This routine updates the driver's internal device database entry
 496  * with information retrieved from the firmware's device database
 497  * entry for the specified device. The ddb_entry->fw_ddb_index field
 498  * must be initialized prior to calling this routine
 499  *
 500  **/
 501 static int qla4xxx_update_ddb_entry(struct scsi_qla_host *ha,
 502                                     struct ddb_entry *ddb_entry,
 503                                     uint32_t fw_ddb_index)
 504 {
 505         struct dev_db_entry *fw_ddb_entry = NULL;
 506         dma_addr_t fw_ddb_entry_dma;
 507         int status = QLA_ERROR;
 508
 509         if (ddb_entry == NULL) {
 510                 DEBUG2(printk("scsi%ld: %s: ddb_entry is NULL\n", ha->host_no,
 511                               __func__));
 512                 goto exit_update_ddb;
 513         }
 514
 515         /* Make sure the dma buffer is valid */
 516         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
 517                                           sizeof(*fw_ddb_entry),
 518                                           &fw_ddb_entry_dma, GFP_KERNEL);
 519         if (fw_ddb_entry == NULL) {
 520                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
 521                               ha->host_no, __func__));
 522
 523                 goto exit_update_ddb;
 524         }
 525
 526         if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
 527                                     fw_ddb_entry_dma, NULL, NULL,
 528                                     &ddb_entry->fw_ddb_device_state, NULL,
 529                                     &ddb_entry->tcp_source_port_num,
 530                                     &ddb_entry->connection_id) ==
 531             QLA_ERROR) {
 532                 DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
 533                               "fw_ddb_index %d\n", ha->host_no, __func__,
 534                               fw_ddb_index));
 535
 536                 goto exit_update_ddb;
 537         }
 538
 539         status = QLA_SUCCESS;
 540         ddb_entry->options = le16_to_cpu(fw_ddb_entry->options);
 541         ddb_entry->target_session_id = le16_to_cpu(fw_ddb_entry->tsid);
 542         ddb_entry->task_mgmt_timeout =
 543                 le16_to_cpu(fw_ddb_entry->def_timeout);
 544         ddb_entry->CmdSn = 0;
 545         ddb_entry->exe_throttle = le16_to_cpu(fw_ddb_entry->exec_throttle);
 546         ddb_entry->default_relogin_timeout =
 547                 le16_to_cpu(fw_ddb_entry->def_timeout);
 548         ddb_entry->default_time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
 549
 550         /* Update index in case it changed */
 551         ddb_entry->fw_ddb_index = fw_ddb_index;
 552         ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
 553
 554         ddb_entry->port = le16_to_cpu(fw_ddb_entry->port);
 555         ddb_entry->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
 556         memcpy(ddb_entry->isid, fw_ddb_entry->isid, sizeof(ddb_entry->isid));
 557
 558         memcpy(&ddb_entry->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
 559                min(sizeof(ddb_entry->iscsi_name),
 560                    sizeof(fw_ddb_entry->iscsi_name)));
 561         memcpy(&ddb_entry->ip_addr[0], &fw_ddb_entry->ip_addr[0],
 562                min(sizeof(ddb_entry->ip_addr), sizeof(fw_ddb_entry->ip_addr)));
 563
 564         ddb_entry->iscsi_max_burst_len = fw_ddb_entry->iscsi_max_burst_len;
 565         ddb_entry->iscsi_max_outsnd_r2t = fw_ddb_entry->iscsi_max_outsnd_r2t;
 566         ddb_entry->iscsi_first_burst_len = fw_ddb_entry->iscsi_first_burst_len;
 567         ddb_entry->iscsi_max_rcv_data_seg_len =
 568                                 fw_ddb_entry->iscsi_max_rcv_data_seg_len;
 569         ddb_entry->iscsi_max_snd_data_seg_len =
 570                                 fw_ddb_entry->iscsi_max_snd_data_seg_len;
 571
 572         if (ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
 573                 memcpy(&ddb_entry->remote_ipv6_addr,
 574                         fw_ddb_entry->ip_addr,
 575                         min(sizeof(ddb_entry->remote_ipv6_addr),
 576                         sizeof(fw_ddb_entry->ip_addr)));
 577                 memcpy(&ddb_entry->link_local_ipv6_addr,
 578                         fw_ddb_entry->link_local_ipv6_addr,
 579                         min(sizeof(ddb_entry->link_local_ipv6_addr),
 580                         sizeof(fw_ddb_entry->link_local_ipv6_addr)));
 581         }
 582
 583         DEBUG2(printk("scsi%ld: %s: ddb[%d] - State= %x status= %d.\n",
 584                         ha->host_no, __func__, fw_ddb_index,
 585                         ddb_entry->fw_ddb_device_state, status));
 586
 587 exit_update_ddb:
 588         if (fw_ddb_entry)
 589                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
 590                                   fw_ddb_entry, fw_ddb_entry_dma);
 591
 592         return status;
 593 }
 594
 595 /**
 596  * qla4xxx_alloc_ddb - allocate device database entry
 597  * @ha: Pointer to host adapter structure.
 598  * @fw_ddb_index: Firmware's device database index
 599  *
 600  * This routine allocates a ddb_entry, ititializes some values, and
 601  * inserts it into the ddb list.
 602  **/
 603 static struct ddb_entry * qla4xxx_alloc_ddb(struct scsi_qla_host *ha,
 604                                             uint32_t fw_ddb_index)
 605 {
 606         struct ddb_entry *ddb_entry;
 607
 608         DEBUG2(printk("scsi%ld: %s: fw_ddb_index [%d]\n", ha->host_no,
 609                       __func__, fw_ddb_index));
 610
 611         ddb_entry = qla4xxx_alloc_sess(ha);
 612         if (ddb_entry == NULL) {
 613                 DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
 614                               "to add fw_ddb_index [%d]\n",
 615                               ha->host_no, __func__, fw_ddb_index));
 616                 return ddb_entry;
 617         }
 618
 619         ddb_entry->fw_ddb_index = fw_ddb_index;
 620         atomic_set(&ddb_entry->port_down_timer, ha->port_down_retry_count);
 621         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
 622         atomic_set(&ddb_entry->relogin_timer, 0);
 623         atomic_set(&ddb_entry->relogin_retry_count, 0);
 624         atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
 625         list_add_tail(&ddb_entry->list, &ha->ddb_list);
 626         ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
 627         ha->tot_ddbs++;
 628
 629         return ddb_entry;
 630 }
 631
 632 /**
 633  * qla4xxx_configure_ddbs - builds driver ddb list
 634  * @ha: Pointer to host adapter structure.
 635  *
 636  * This routine searches for all valid firmware ddb entries and builds
 637  * an internal ddb list. Ddbs that are considered valid are those with
 638  * a device state of SESSION_ACTIVE.
 639  **/
 640 static int qla4xxx_build_ddb_list(struct scsi_qla_host *ha)
 641 {
 642         int status = QLA_SUCCESS;
 643         uint32_t fw_ddb_index = 0;
 644         uint32_t next_fw_ddb_index = 0;
 645         uint32_t ddb_state;
 646         uint32_t conn_err, err_code;
 647         struct ddb_entry *ddb_entry;
 648         uint32_t new_tgt;
 649
 650         dev_info(&ha->pdev->dev, "Initializing DDBs ...\n");
 651         for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES;
 652              fw_ddb_index = next_fw_ddb_index) {
 653                 /* First, let's see if a device exists here */
 654                 if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, NULL, 0, NULL,
 655                                             &next_fw_ddb_index, &ddb_state,
 656                                             &conn_err, NULL, NULL) ==
 657                     QLA_ERROR) {
 658                         DEBUG2(printk("scsi%ld: %s: get_ddb_entry, "
 659                                       "fw_ddb_index %d failed", ha->host_no,
 660                                       __func__, fw_ddb_index));
 661                         return QLA_ERROR;
 662                 }
 663
 664                 DEBUG2(printk("scsi%ld: %s: Getting DDB[%d] ddbstate=0x%x, "
 665                               "next_fw_ddb_index=%d.\n", ha->host_no, __func__,
 666                               fw_ddb_index, ddb_state, next_fw_ddb_index));
 667
 668                 /* Issue relogin, if necessary. */
 669                 if (ddb_state == DDB_DS_SESSION_FAILED ||
 670                     ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) {
 671                         /* Try and login to device */
 672                         DEBUG2(printk("scsi%ld: %s: Login to DDB[%d]\n",
 673                                       ha->host_no, __func__, fw_ddb_index));
 674                         err_code = ((conn_err & 0x00ff0000) >> 16);
 675                         if (err_code == 0x1c || err_code == 0x06) {
 676                                 DEBUG2(printk("scsi%ld: %s send target "
 677                                               "completed "
 678                                               "or access denied failure\n",
 679                                               ha->host_no, __func__));
 680                         } else {
 681                                 qla4xxx_set_ddb_entry(ha, fw_ddb_index, 0);
 682                                 if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index,
 683                                         NULL, 0, NULL, &next_fw_ddb_index,
 684                                         &ddb_state, &conn_err, NULL, NULL)
 685                                         == QLA_ERROR) {
 686                                         DEBUG2(printk("scsi%ld: %s:"
 687                                                 "get_ddb_entry %d failed\n",
 688                                                 ha->host_no,
 689                                                 __func__, fw_ddb_index));
 690                                         return QLA_ERROR;
 691                                 }
 692                         }
 693                 }
 694
 695                 if (ddb_state != DDB_DS_SESSION_ACTIVE)
 696                         goto next_one;
 697                 /*
 698                  * if fw_ddb with session active state found,
 699                  * add to ddb_list
 700                  */
 701                 DEBUG2(printk("scsi%ld: %s: DDB[%d] added to list\n",
 702                               ha->host_no, __func__, fw_ddb_index));
 703
 704                 /* Add DDB to internal our ddb list. */
 705                 ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index, &new_tgt);
 706                 if (ddb_entry == NULL) {
 707                         DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
 708                                       "for device at fw_ddb_index %d\n",
 709                                       ha->host_no, __func__, fw_ddb_index));
 710                         return QLA_ERROR;
 711                 }
 712                 /* Fill in the device structure */
 713                 if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
 714                     QLA_ERROR) {
 715                         ha->fw_ddb_index_map[fw_ddb_index] =
 716                                 (struct ddb_entry *)INVALID_ENTRY;
 717
 718
 719                         DEBUG2(printk("scsi%ld: %s: update_ddb_entry failed "
 720                                       "for fw_ddb_index %d.\n",
 721                                       ha->host_no, __func__, fw_ddb_index));
 722                         return QLA_ERROR;
 723                 }
 724
 725 next_one:
 726                 /* We know we've reached the last device when
 727                  * next_fw_ddb_index is 0 */
 728                 if (next_fw_ddb_index == 0)
 729                         break;
 730         }
 731
 732         dev_info(&ha->pdev->dev, "DDB list done..\n");
 733
 734         return status;
 735 }
 736
 737 struct qla4_relog_scan {
 738         int halt_wait;
 739         uint32_t conn_err;
 740         uint32_t err_code;
 741         uint32_t fw_ddb_index;
 742         uint32_t next_fw_ddb_index;
 743         uint32_t fw_ddb_device_state;
 744 };
 745
 746 static int qla4_test_rdy(struct scsi_qla_host *ha, struct qla4_relog_scan *rs)
 747 {
 748         struct ddb_entry *ddb_entry;
 749
 750         /*
 751          * Don't want to do a relogin if connection
 752          * error is 0x1c.
 753          */
 754         rs->err_code = ((rs->conn_err & 0x00ff0000) >> 16);
 755         if (rs->err_code == 0x1c || rs->err_code == 0x06) {
 756                 DEBUG2(printk(
 757                                "scsi%ld: %s send target"
 758                                " completed or "
 759                                "access denied failure\n",
 760                                ha->host_no, __func__));
 761         } else {
 762                 /* We either have a device that is in
 763                  * the process of relogging in or a
 764                  * device that is waiting to be
 765                  * relogged in */
 766                 rs->halt_wait = 0;
 767
 768                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha,
 769                                                            rs->fw_ddb_index);
 770                 if (ddb_entry == NULL)
 771                         return QLA_ERROR;
 772
 773                 if (ddb_entry->dev_scan_wait_to_start_relogin != 0
 774                     && time_after_eq(jiffies,
 775                                      ddb_entry->
 776                                      dev_scan_wait_to_start_relogin))
 777                 {
 778                         ddb_entry->dev_scan_wait_to_start_relogin = 0;
 779                         qla4xxx_set_ddb_entry(ha, rs->fw_ddb_index, 0);
 780                 }
 781         }
 782         return QLA_SUCCESS;
 783 }
 784
 785 static int qla4_scan_for_relogin(struct scsi_qla_host *ha,
 786                                  struct qla4_relog_scan *rs)
 787 {
 788         int error;
 789
 790         /* scan for relogins
 791          * ----------------- */
 792         for (rs->fw_ddb_index = 0; rs->fw_ddb_index < MAX_DDB_ENTRIES;
 793              rs->fw_ddb_index = rs->next_fw_ddb_index) {
 794                 if (qla4xxx_get_fwddb_entry(ha, rs->fw_ddb_index, NULL, 0,
 795                                             NULL, &rs->next_fw_ddb_index,
 796                                             &rs->fw_ddb_device_state,
 797                                             &rs->conn_err, NULL, NULL)
 798                     == QLA_ERROR)
 799                         return QLA_ERROR;
 800
 801                 if (rs->fw_ddb_device_state == DDB_DS_LOGIN_IN_PROCESS)
 802                         rs->halt_wait = 0;
 803
 804                 if (rs->fw_ddb_device_state == DDB_DS_SESSION_FAILED ||
 805                     rs->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE) {
 806                         error = qla4_test_rdy(ha, rs);
 807                         if (error)
 808                                 return error;
 809                 }
 810
 811                 /* We know we've reached the last device when
 812                  * next_fw_ddb_index is 0 */
 813                 if (rs->next_fw_ddb_index == 0)
 814                         break;
 815         }
 816         return QLA_SUCCESS;
 817 }
 818
 819 /**
 820  * qla4xxx_devices_ready - wait for target devices to be logged in
 821  * @ha: pointer to adapter structure
 822  *
 823  * This routine waits up to ql4xdiscoverywait seconds
 824  * F/W database during driver load time.
 825  **/
 826 static int qla4xxx_devices_ready(struct scsi_qla_host *ha)
 827 {
 828         int error;
 829         unsigned long discovery_wtime;
 830         struct qla4_relog_scan rs;
 831
 832         discovery_wtime = jiffies + (ql4xdiscoverywait * HZ);
 833
 834         DEBUG(printk("Waiting (%d) for devices ...\n", ql4xdiscoverywait));
 835         do {
 836                 /* poll for AEN. */
 837                 qla4xxx_get_firmware_state(ha);
 838                 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) {
 839                         /* Set time-between-relogin timer */
 840                         qla4xxx_process_aen(ha, RELOGIN_DDB_CHANGED_AENS);
 841                 }
 842
 843                 /* if no relogins active or needed, halt discvery wait */
 844                 rs.halt_wait = 1;
 845
 846                 error = qla4_scan_for_relogin(ha, &rs);
 847
 848                 if (rs.halt_wait) {
 849                         DEBUG2(printk("scsi%ld: %s: Delay halted.  Devices "
 850                                       "Ready.\n", ha->host_no, __func__));
 851                         return QLA_SUCCESS;
 852                 }
 853
 854                 msleep(2000);
 855         } while (!time_after_eq(jiffies, discovery_wtime));
 856
 857         DEBUG3(qla4xxx_get_conn_event_log(ha));
 858
 859         return QLA_SUCCESS;
 860 }
 861
 862 static void qla4xxx_flush_AENS(struct scsi_qla_host *ha)
 863 {
 864         unsigned long wtime;
 865
 866         /* Flush the 0x8014 AEN from the firmware as a result of
 867          * Auto connect. We are basically doing get_firmware_ddb()
 868          * to determine whether we need to log back in or not.
 869          *  Trying to do a set ddb before we have processed 0x8014
 870          *  will result in another set_ddb() for the same ddb. In other
 871          *  words there will be stale entries in the aen_q.
 872          */
 873         wtime = jiffies + (2 * HZ);
 874         do {
 875                 if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS)
 876                         if (ha->firmware_state & (BIT_2 | BIT_0))
 877                                 return;
 878
 879                 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
 880                         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
 881
 882                 msleep(1000);
 883         } while (!time_after_eq(jiffies, wtime));
 884
 885 }
 886
 887 static int qla4xxx_initialize_ddb_list(struct scsi_qla_host *ha)
 888 {
 889         uint16_t fw_ddb_index;
 890         int status = QLA_SUCCESS;
 891
 892         /* free the ddb list if is not empty */
 893         if (!list_empty(&ha->ddb_list))
 894                 qla4xxx_free_ddb_list(ha);
 895
 896         for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES; fw_ddb_index++)
 897                 ha->fw_ddb_index_map[fw_ddb_index] =
 898                         (struct ddb_entry *)INVALID_ENTRY;
 899
 900         ha->tot_ddbs = 0;
 901
 902         qla4xxx_flush_AENS(ha);
 903
 904         /*
 905          * First perform device discovery for active
 906          * fw ddb indexes and build
 907          * ddb list.
 908          */
 909         if ((status = qla4xxx_build_ddb_list(ha)) == QLA_ERROR)
 910                 return status;
 911
 912         /* Wait for an AEN */
 913         qla4xxx_devices_ready(ha);
 914
 915         /*
 916          * Targets can come online after the inital discovery, so processing
 917          * the aens here will catch them.
 918          */
 919         if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
 920                 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
 921
 922         return status;
 923 }
 924
 925 /**
 926  * qla4xxx_update_ddb_list - update the driver ddb list
 927  * @ha: pointer to host adapter structure.
 928  *
 929  * This routine obtains device information from the F/W database after
 930  * firmware or adapter resets.  The device table is preserved.
 931  **/
 932 int qla4xxx_reinitialize_ddb_list(struct scsi_qla_host *ha)
 933 {
 934         int status = QLA_SUCCESS;
 935         struct ddb_entry *ddb_entry, *detemp;
 936
 937         /* Update the device information for all devices. */
 938         list_for_each_entry_safe(ddb_entry, detemp, &ha->ddb_list, list) {
 939                 qla4xxx_update_ddb_entry(ha, ddb_entry,
 940                                          ddb_entry->fw_ddb_index);
 941                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
 942                         atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
 943                         DEBUG2(printk ("scsi%ld: %s: ddb index [%d] marked "
 944                                        "ONLINE\n", ha->host_no, __func__,
 945                                        ddb_entry->fw_ddb_index));
 946                 } else if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
 947                         qla4xxx_mark_device_missing(ha, ddb_entry);
 948         }
 949         return status;
 950 }
 951
 952 /**
 953  * qla4xxx_relogin_device - re-establish session
 954  * @ha: Pointer to host adapter structure.
 955  * @ddb_entry: Pointer to device database entry
 956  *
 957  * This routine does a session relogin with the specified device.
 958  * The ddb entry must be assigned prior to making this call.
 959  **/
 960 int qla4xxx_relogin_device(struct scsi_qla_host *ha,
 961                            struct ddb_entry * ddb_entry)
 962 {
 963         uint16_t relogin_timer;
 964
 965         relogin_timer = max(ddb_entry->default_relogin_timeout,
 966                             (uint16_t)RELOGIN_TOV);
 967         atomic_set(&ddb_entry->relogin_timer, relogin_timer);
 968
 969         DEBUG2(printk("scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
 970                       ddb_entry->fw_ddb_index, relogin_timer));
 971
 972         qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index, 0);
 973
 974         return QLA_SUCCESS;
 975 }
 976
 977 static int qla4xxx_config_nvram(struct scsi_qla_host *ha)
 978 {
 979         unsigned long flags;
 980         union external_hw_config_reg extHwConfig;
 981
 982         DEBUG2(printk("scsi%ld: %s: Get EEProm parameters \n", ha->host_no,
 983                       __func__));
 984         if (ql4xxx_lock_flash(ha) != QLA_SUCCESS)
 985                 return QLA_ERROR;
 986         if (ql4xxx_lock_nvram(ha) != QLA_SUCCESS) {
 987                 ql4xxx_unlock_flash(ha);
 988                 return QLA_ERROR;
 989         }
 990
 991         /* Get EEPRom Parameters from NVRAM and validate */
 992         dev_info(&ha->pdev->dev, "Configuring NVRAM ...\n");
 993         if (qla4xxx_is_nvram_configuration_valid(ha) == QLA_SUCCESS) {
 994                 spin_lock_irqsave(&ha->hardware_lock, flags);
 995                 extHwConfig.Asuint32_t =
 996                         rd_nvram_word(ha, eeprom_ext_hw_conf_offset(ha));
 997                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 998         } else {
 999                 dev_warn(&ha->pdev->dev,
1000                            "scsi%ld: %s: EEProm checksum invalid.  "
1001                            "Please update your EEPROM\n", ha->host_no,
1002                            __func__);
1003
1004                 /* Attempt to set defaults */
1005                 if (is_qla4010(ha))
1006                         extHwConfig.Asuint32_t = 0x1912;
1007                 else if (is_qla4022(ha) | is_qla4032(ha))
1008                         extHwConfig.Asuint32_t = 0x0023;
1009                 else
1010                         return QLA_ERROR;
1011         }
1012         DEBUG(printk("scsi%ld: %s: Setting extHwConfig to 0xFFFF%04x\n",
1013                      ha->host_no, __func__, extHwConfig.Asuint32_t));
1014
1015         spin_lock_irqsave(&ha->hardware_lock, flags);
1016         writel((0xFFFF << 16) | extHwConfig.Asuint32_t, isp_ext_hw_conf(ha));
1017         readl(isp_ext_hw_conf(ha));
1018         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1019
1020         ql4xxx_unlock_nvram(ha);
1021         ql4xxx_unlock_flash(ha);
1022
1023         return QLA_SUCCESS;
1024 }
1025
1026 static void qla4x00_pci_config(struct scsi_qla_host *ha)
1027 {
1028         uint16_t w;
1029         int status;
1030
1031         dev_info(&ha->pdev->dev, "Configuring PCI space...\n");
1032
1033         pci_set_master(ha->pdev);
1034         status = pci_set_mwi(ha->pdev);
1035         /*
1036          * We want to respect framework's setting of PCI configuration space
1037          * command register and also want to make sure that all bits of
1038          * interest to us are properly set in command register.
1039          */
1040         pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
1041         w |= PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
1042         w &= ~PCI_COMMAND_INTX_DISABLE;
1043         pci_write_config_word(ha->pdev, PCI_COMMAND, w);
1044 }
1045
1046 static int qla4xxx_start_firmware_from_flash(struct scsi_qla_host *ha)
1047 {
1048         int status = QLA_ERROR;
1049         unsigned long max_wait_time;
1050         unsigned long flags;
1051         uint32_t mbox_status;
1052
1053         dev_info(&ha->pdev->dev, "Starting firmware ...\n");
1054
1055         /*
1056          * Start firmware from flash ROM
1057          *
1058          * WORKAROUND: Stuff a non-constant value that the firmware can
1059          * use as a seed for a random number generator in MB7 prior to
1060          * setting BOOT_ENABLE.  Fixes problem where the TCP
1061          * connections use the same TCP ports after each reboot,
1062          * causing some connections to not get re-established.
1063          */
1064         DEBUG(printk("scsi%d: %s: Start firmware from flash ROM\n",
1065                      ha->host_no, __func__));
1066
1067         spin_lock_irqsave(&ha->hardware_lock, flags);
1068         writel(jiffies, &ha->reg->mailbox[7]);
1069         if (is_qla4022(ha) | is_qla4032(ha))
1070                 writel(set_rmask(NVR_WRITE_ENABLE),
1071                        &ha->reg->u1.isp4022.nvram);
1072
1073         writel(2, &ha->reg->mailbox[6]);
1074         readl(&ha->reg->mailbox[6]);
1075
1076         writel(set_rmask(CSR_BOOT_ENABLE), &ha->reg->ctrl_status);
1077         readl(&ha->reg->ctrl_status);
1078         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1079
1080         /* Wait for firmware to come UP. */
1081         DEBUG2(printk(KERN_INFO "scsi%ld: %s: Wait up to %d seconds for "
1082                       "boot firmware to complete...\n",
1083                       ha->host_no, __func__, FIRMWARE_UP_TOV));
1084         max_wait_time = jiffies + (FIRMWARE_UP_TOV * HZ);
1085         do {
1086                 uint32_t ctrl_status;
1087
1088                 spin_lock_irqsave(&ha->hardware_lock, flags);
1089                 ctrl_status = readw(&ha->reg->ctrl_status);
1090                 mbox_status = readw(&ha->reg->mailbox[0]);
1091                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1092
1093                 if (ctrl_status & set_rmask(CSR_SCSI_PROCESSOR_INTR))
1094                         break;
1095                 if (mbox_status == MBOX_STS_COMMAND_COMPLETE)
1096                         break;
1097
1098                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: Waiting for boot "
1099                               "firmware to complete... ctrl_sts=0x%x\n",
1100                               ha->host_no, __func__, ctrl_status));
1101
1102                 msleep_interruptible(250);
1103         } while (!time_after_eq(jiffies, max_wait_time));
1104
1105         if (mbox_status == MBOX_STS_COMMAND_COMPLETE) {
1106                 DEBUG(printk(KERN_INFO "scsi%ld: %s: Firmware has started\n",
1107                              ha->host_no, __func__));
1108
1109                 spin_lock_irqsave(&ha->hardware_lock, flags);
1110                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
1111                        &ha->reg->ctrl_status);
1112                 readl(&ha->reg->ctrl_status);
1113                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1114
1115                 status = QLA_SUCCESS;
1116         } else {
1117                 printk(KERN_INFO "scsi%ld: %s: Boot firmware failed "
1118                        "-  mbox status 0x%x\n", ha->host_no, __func__,
1119                        mbox_status);
1120                 status = QLA_ERROR;
1121         }
1122         return status;
1123 }
1124
1125 int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
1126 {
1127 #define QL4_LOCK_DRVR_WAIT      60
1128 #define QL4_LOCK_DRVR_SLEEP     1
1129
1130         int drvr_wait = QL4_LOCK_DRVR_WAIT;
1131         while (drvr_wait) {
1132                 if (ql4xxx_lock_drvr(a) == 0) {
1133                         ssleep(QL4_LOCK_DRVR_SLEEP);
1134                         if (drvr_wait) {
1135                                 DEBUG2(printk("scsi%ld: %s: Waiting for "
1136                                               "Global Init Semaphore(%d)...\n",
1137                                               a->host_no,
1138                                               __func__, drvr_wait));
1139                         }
1140                         drvr_wait -= QL4_LOCK_DRVR_SLEEP;
1141                 } else {
1142                         DEBUG2(printk("scsi%ld: %s: Global Init Semaphore "
1143                                       "acquired\n", a->host_no, __func__));
1144                         return QLA_SUCCESS;
1145                 }
1146         }
1147         return QLA_ERROR;
1148 }
1149
1150 /**
1151  * qla4xxx_start_firmware - starts qla4xxx firmware
1152  * @ha: Pointer to host adapter structure.
1153  *
1154  * This routine performs the necessary steps to start the firmware for
1155  * the QLA4010 adapter.
1156  **/
1157 static int qla4xxx_start_firmware(struct scsi_qla_host *ha)
1158 {
1159         unsigned long flags = 0;
1160         uint32_t mbox_status;
1161         int status = QLA_ERROR;
1162         int soft_reset = 1;
1163         int config_chip = 0;
1164
1165         if (is_qla4022(ha) | is_qla4032(ha))
1166                 ql4xxx_set_mac_number(ha);
1167
1168         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
1169                 return QLA_ERROR;
1170
1171         spin_lock_irqsave(&ha->hardware_lock, flags);
1172
1173         DEBUG2(printk("scsi%ld: %s: port_ctrl   = 0x%08X\n", ha->host_no,
1174                       __func__, readw(isp_port_ctrl(ha))));
1175         DEBUG(printk("scsi%ld: %s: port_status = 0x%08X\n", ha->host_no,
1176                      __func__, readw(isp_port_status(ha))));
1177
1178         /* Is Hardware already initialized? */
1179         if ((readw(isp_port_ctrl(ha)) & 0x8000) != 0) {
1180                 DEBUG(printk("scsi%ld: %s: Hardware has already been "
1181                              "initialized\n", ha->host_no, __func__));
1182
1183                 /* Receive firmware boot acknowledgement */
1184                 mbox_status = readw(&ha->reg->mailbox[0]);
1185
1186                 DEBUG2(printk("scsi%ld: %s: H/W Config complete - mbox[0]= "
1187                               "0x%x\n", ha->host_no, __func__, mbox_status));
1188
1189                 /* Is firmware already booted? */
1190                 if (mbox_status == 0) {
1191                         /* F/W not running, must be config by net driver */
1192                         config_chip = 1;
1193                         soft_reset = 0;
1194                 } else {
1195                         writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
1196                                &ha->reg->ctrl_status);
1197                         readl(&ha->reg->ctrl_status);
1198                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1199                         if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
1200                                 DEBUG2(printk("scsi%ld: %s: Get firmware "
1201                                               "state -- state = 0x%x\n",
1202                                               ha->host_no,
1203                                               __func__, ha->firmware_state));
1204                                 /* F/W is running */
1205                                 if (ha->firmware_state &
1206                                     FW_STATE_CONFIG_WAIT) {
1207                                         DEBUG2(printk("scsi%ld: %s: Firmware "
1208                                                       "in known state -- "
1209                                                       "config and "
1210                                                       "boot, state = 0x%x\n",
1211                                                       ha->host_no, __func__,
1212                                                       ha->firmware_state));
1213                                         config_chip = 1;
1214                                         soft_reset = 0;
1215                                 }
1216                         } else {
1217                                 DEBUG2(printk("scsi%ld: %s: Firmware in "
1218                                               "unknown state -- resetting,"
1219                                               " state = "
1220                                               "0x%x\n", ha->host_no, __func__,
1221                                               ha->firmware_state));
1222                         }
1223                         spin_lock_irqsave(&ha->hardware_lock, flags);
1224                 }
1225         } else {
1226                 DEBUG(printk("scsi%ld: %s: H/W initialization hasn't been "
1227                              "started - resetting\n", ha->host_no, __func__));
1228         }
1229         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1230
1231         DEBUG(printk("scsi%ld: %s: Flags soft_rest=%d, config= %d\n ",
1232                      ha->host_no, __func__, soft_reset, config_chip));
1233         if (soft_reset) {
1234                 DEBUG(printk("scsi%ld: %s: Issue Soft Reset\n", ha->host_no,
1235                              __func__));
1236                 status = qla4xxx_soft_reset(ha);
1237                 if (status == QLA_ERROR) {
1238                         DEBUG(printk("scsi%d: %s: Soft Reset failed!\n",
1239                                      ha->host_no, __func__));
1240                         ql4xxx_unlock_drvr(ha);
1241                         return QLA_ERROR;
1242                 }
1243                 config_chip = 1;
1244
1245                 /* Reset clears the semaphore, so acquire again */
1246                 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
1247                         return QLA_ERROR;
1248         }
1249
1250         if (config_chip) {
1251                 if ((status = qla4xxx_config_nvram(ha)) == QLA_SUCCESS)
1252                         status = qla4xxx_start_firmware_from_flash(ha);
1253         }
1254
1255         ql4xxx_unlock_drvr(ha);
1256         if (status == QLA_SUCCESS) {
1257                 qla4xxx_get_fw_version(ha);
1258                 if (test_and_clear_bit(AF_GET_CRASH_RECORD, &ha->flags))
1259                         qla4xxx_get_crash_record(ha);
1260         } else {
1261                 DEBUG(printk("scsi%ld: %s: Firmware has NOT started\n",
1262                              ha->host_no, __func__));
1263         }
1264         return status;
1265 }
1266
1267
1268 /**
1269  * qla4xxx_initialize_adapter - initiailizes hba
1270  * @ha: Pointer to host adapter structure.
1271  * @renew_ddb_list: Indicates what to do with the adapter's ddb list
1272  *      after adapter recovery has completed.
1273  *      0=preserve ddb list, 1=destroy and rebuild ddb list
1274  *
1275  * This routine parforms all of the steps necessary to initialize the adapter.
1276  *
1277  **/
1278 int qla4xxx_initialize_adapter(struct scsi_qla_host *ha,
1279                                uint8_t renew_ddb_list)
1280 {
1281         int status = QLA_ERROR;
1282         int8_t ip_address[IP_ADDR_LEN] = {0} ;
1283
1284         clear_bit(AF_ONLINE, &ha->flags);
1285         ha->eeprom_cmd_data = 0;
1286
1287         qla4x00_pci_config(ha);
1288
1289         qla4xxx_disable_intrs(ha);
1290
1291         /* Initialize the Host adapter request/response queues and firmware */
1292         if (qla4xxx_start_firmware(ha) == QLA_ERROR)
1293                 goto exit_init_hba;
1294
1295         if (qla4xxx_validate_mac_address(ha) == QLA_ERROR)
1296                 goto exit_init_hba;
1297
1298         if (qla4xxx_init_local_data(ha) == QLA_ERROR)
1299                 goto exit_init_hba;
1300
1301         status = qla4xxx_init_firmware(ha);
1302         if (status == QLA_ERROR)
1303                 goto exit_init_hba;
1304
1305         /*
1306          * FW is waiting to get an IP address from DHCP server: Skip building
1307          * the ddb_list and wait for DHCP lease acquired aen to come in
1308          * followed by 0x8014 aen" to trigger the tgt discovery process.
1309          */
1310         if (ha->firmware_state & FW_STATE_CONFIGURING_IP)
1311                 goto exit_init_online;
1312
1313         /* Skip device discovery if ip and subnet is zero */
1314         if (memcmp(ha->ip_address, ip_address, IP_ADDR_LEN) == 0 ||
1315             memcmp(ha->subnet_mask, ip_address, IP_ADDR_LEN) == 0)
1316                 goto exit_init_online;
1317
1318         if (renew_ddb_list == PRESERVE_DDB_LIST) {
1319                 /*
1320                  * We want to preserve lun states (i.e. suspended, etc.)
1321                  * for recovery initiated by the driver.  So just update
1322                  * the device states for the existing ddb_list.
1323                  */
1324                 qla4xxx_reinitialize_ddb_list(ha);
1325         } else if (renew_ddb_list == REBUILD_DDB_LIST) {
1326                 /*
1327                  * We want to build the ddb_list from scratch during
1328                  * driver initialization and recovery initiated by the
1329                  * INT_HBA_RESET IOCTL.
1330                  */
1331                 status = qla4xxx_initialize_ddb_list(ha);
1332                 if (status == QLA_ERROR) {
1333                         DEBUG2(printk("%s(%ld) Error occurred during build"
1334                                       "ddb list\n", __func__, ha->host_no));
1335                         goto exit_init_hba;
1336                 }
1337
1338         }
1339         if (!ha->tot_ddbs) {
1340                 DEBUG2(printk("scsi%ld: Failed to initialize devices or none "
1341                               "present in Firmware device database\n",
1342                               ha->host_no));
1343         }
1344
1345 exit_init_online:
1346         set_bit(AF_ONLINE, &ha->flags);
1347 exit_init_hba:
1348         return status;
1349 }
1350
1351 /**
1352  * qla4xxx_add_device_dynamically - ddb addition due to an AEN
1353  * @ha:  Pointer to host adapter structure.
1354  * @fw_ddb_index:  Firmware's device database index
1355  *
1356  * This routine processes adds a device as a result of an 8014h AEN.
1357  **/
1358 static void qla4xxx_add_device_dynamically(struct scsi_qla_host *ha,
1359                                            uint32_t fw_ddb_index)
1360 {
1361         struct ddb_entry * ddb_entry;
1362         uint32_t new_tgt;
1363
1364         /* First allocate a device structure */
1365         ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index, &new_tgt);
1366         if (ddb_entry == NULL) {
1367                 DEBUG2(printk(KERN_WARNING
1368                               "scsi%ld: Unable to allocate memory to add "
1369                               "fw_ddb_index %d\n", ha->host_no, fw_ddb_index));
1370                 return;
1371         }
1372
1373         if (!new_tgt && (ddb_entry->fw_ddb_index != fw_ddb_index)) {
1374                 /* Target has been bound to a new fw_ddb_index */
1375                 qla4xxx_free_ddb(ha, ddb_entry);
1376                 ddb_entry = qla4xxx_alloc_ddb(ha, fw_ddb_index);
1377                 if (ddb_entry == NULL) {
1378                         DEBUG2(printk(KERN_WARNING
1379                                 "scsi%ld: Unable to allocate memory"
1380                                 " to add fw_ddb_index %d\n",
1381                                 ha->host_no, fw_ddb_index));
1382                         return;
1383                 }
1384         }
1385         if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
1386                                     QLA_ERROR) {
1387                 ha->fw_ddb_index_map[fw_ddb_index] =
1388                                         (struct ddb_entry *)INVALID_ENTRY;
1389                 DEBUG2(printk(KERN_WARNING
1390                               "scsi%ld: failed to add new device at index "
1391                               "[%d]\n Unable to retrieve fw ddb entry\n",
1392                               ha->host_no, fw_ddb_index));
1393                 qla4xxx_free_ddb(ha, ddb_entry);
1394                 return;
1395         }
1396
1397         if (qla4xxx_add_sess(ddb_entry)) {
1398                 DEBUG2(printk(KERN_WARNING
1399                               "scsi%ld: failed to add new device at index "
1400                               "[%d]\n Unable to add connection and session\n",
1401                               ha->host_no, fw_ddb_index));
1402                 qla4xxx_free_ddb(ha, ddb_entry);
1403         }
1404 }
1405
1406 /**
1407  * qla4xxx_process_ddb_changed - process ddb state change
1408  * @ha - Pointer to host adapter structure.
1409  * @fw_ddb_index - Firmware's device database index
1410  * @state - Device state
1411  *
1412  * This routine processes a Decive Database Changed AEN Event.
1413  **/
1414 int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha,
1415                                 uint32_t fw_ddb_index, uint32_t state)
1416 {
1417         struct ddb_entry * ddb_entry;
1418         uint32_t old_fw_ddb_device_state;
1419
1420         /* check for out of range index */
1421         if (fw_ddb_index >= MAX_DDB_ENTRIES)
1422                 return QLA_ERROR;
1423
1424         /* Get the corresponging ddb entry */
1425         ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
1426         /* Device does not currently exist in our database. */
1427         if (ddb_entry == NULL) {
1428                 if (state == DDB_DS_SESSION_ACTIVE)
1429                         qla4xxx_add_device_dynamically(ha, fw_ddb_index);
1430                 return QLA_SUCCESS;
1431         }
1432
1433         /* Device already exists in our database. */
1434         old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
1435         DEBUG2(printk("scsi%ld: %s DDB - old state= 0x%x, new state=0x%x for "
1436                       "index [%d]\n", ha->host_no, __func__,
1437                       ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
1438         if (old_fw_ddb_device_state == state &&
1439             state == DDB_DS_SESSION_ACTIVE) {
1440                 /* Do nothing, state not changed. */
1441                 return QLA_SUCCESS;
1442         }
1443
1444         ddb_entry->fw_ddb_device_state = state;
1445         /* Device is back online. */
1446         if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
1447                 atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
1448                 atomic_set(&ddb_entry->port_down_timer,
1449                            ha->port_down_retry_count);
1450                 atomic_set(&ddb_entry->relogin_retry_count, 0);
1451                 atomic_set(&ddb_entry->relogin_timer, 0);
1452                 clear_bit(DF_RELOGIN, &ddb_entry->flags);
1453                 clear_bit(DF_NO_RELOGIN, &ddb_entry->flags);
1454                 iscsi_unblock_session(ddb_entry->sess);
1455                 iscsi_session_event(ddb_entry->sess,
1456                                     ISCSI_KEVENT_CREATE_SESSION);
1457                 /*
1458                  * Change the lun state to READY in case the lun TIMEOUT before
1459                  * the device came back.
1460                  */
1461         } else {
1462                 /* Device went away, mark device missing */
1463                 if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE) {
1464                         DEBUG2(dev_info(&ha->pdev->dev, "%s mark missing "
1465                                         "ddb_entry 0x%p sess 0x%p conn 0x%p\n",
1466                                         __func__, ddb_entry,
1467                                         ddb_entry->sess, ddb_entry->conn));
1468                         qla4xxx_mark_device_missing(ha, ddb_entry);
1469                 }
1470
1471                 /*
1472                  * Relogin if device state changed to a not active state.
1473                  * However, do not relogin if this aen is a result of an IOCTL
1474                  * logout (DF_NO_RELOGIN) or if this is a discovered device.
1475                  */
1476                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_FAILED &&
1477                     !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
1478                     !test_bit(DF_NO_RELOGIN, &ddb_entry->flags) &&
1479                     !test_bit(DF_ISNS_DISCOVERED, &ddb_entry->flags)) {
1480                         /*
1481                          * This triggers a relogin.  After the relogin_timer
1482                          * expires, the relogin gets scheduled.  We must wait a
1483                          * minimum amount of time since receiving an 0x8014 AEN
1484                          * with failed device_state or a logout response before
1485                          * we can issue another relogin.
1486                          */
1487                         /* Firmware padds this timeout: (time2wait +1).
1488                          * Driver retry to login should be longer than F/W.
1489                          * Otherwise F/W will fail
1490                          * set_ddb() mbx cmd with 0x4005 since it still
1491                          * counting down its time2wait.
1492                          */
1493                         atomic_set(&ddb_entry->relogin_timer, 0);
1494                         atomic_set(&ddb_entry->retry_relogin_timer,
1495                                    ddb_entry->default_time2wait + 4);
1496                 }
1497         }
1498
1499         return QLA_SUCCESS;
1500 }
1501