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   1 /*
   2  * QLogic iSCSI HBA Driver
   3  * Copyright (c)  2003-2006 QLogic Corporation
   4  *
   5  * See LICENSE.qla4xxx for copyright and licensing details.
   6  */
   7
   8 #include <scsi/iscsi_if.h>
   9 #include "ql4_def.h"
  10 #include "ql4_glbl.h"
  11 #include "ql4_dbg.h"
  12 #include "ql4_inline.h"
  13
  14 static struct ddb_entry * qla4xxx_alloc_ddb(struct scsi_qla_host *ha,
  15                                             uint32_t fw_ddb_index);
  16
  17 static void ql4xxx_set_mac_number(struct scsi_qla_host *ha)
  18 {
  19         uint32_t value;
  20         uint8_t func_number;
  21         unsigned long flags;
  22
  23         /* Get the function number */
  24         spin_lock_irqsave(&ha->hardware_lock, flags);
  25         value = readw(&ha->reg->ctrl_status);
  26         spin_unlock_irqrestore(&ha->hardware_lock, flags);
  27
  28         func_number = (uint8_t) ((value >> 4) & 0x30);
  29         switch (value & ISP_CONTROL_FN_MASK) {
  30         case ISP_CONTROL_FN0_SCSI:
  31                 ha->mac_index = 1;
  32                 break;
  33         case ISP_CONTROL_FN1_SCSI:
  34                 ha->mac_index = 3;
  35                 break;
  36         default:
  37                 DEBUG2(printk("scsi%ld: %s: Invalid function number, "
  38                               "ispControlStatus = 0x%x\n", ha->host_no,
  39                               __func__, value));
  40                 break;
  41         }
  42         DEBUG2(printk("scsi%ld: %s: mac_index %d.\n", ha->host_no, __func__,
  43                       ha->mac_index));
  44 }
  45
  46 /**
  47  * qla4xxx_free_ddb - deallocate ddb
  48  * @ha: pointer to host adapter structure.
  49  * @ddb_entry: pointer to device database entry
  50  *
  51  * This routine deallocates and unlinks the specified ddb_entry from the
  52  * adapter's
  53  **/
  54 static void qla4xxx_free_ddb(struct scsi_qla_host *ha,
  55                              struct ddb_entry *ddb_entry)
  56 {
  57         /* Remove device entry from list */
  58         list_del_init(&ddb_entry->list);
  59
  60         /* Remove device pointer from index mapping arrays */
  61         ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] =
  62                 (struct ddb_entry *) INVALID_ENTRY;
  63         ha->tot_ddbs--;
  64
  65         /* Free memory and scsi-ml struct for device entry */
  66         qla4xxx_destroy_sess(ddb_entry);
  67 }
  68
  69 /**
  70  * qla4xxx_free_ddb_list - deallocate all ddbs
  71  * @ha: pointer to host adapter structure.
  72  *
  73  * This routine deallocates and removes all devices on the sppecified adapter.
  74  **/
  75 void qla4xxx_free_ddb_list(struct scsi_qla_host *ha)
  76 {
  77         struct list_head *ptr;
  78         struct ddb_entry *ddb_entry;
  79
  80         while (!list_empty(&ha->ddb_list)) {
  81                 ptr = ha->ddb_list.next;
  82                 /* Free memory for device entry and remove */
  83                 ddb_entry = list_entry(ptr, struct ddb_entry, list);
  84                 qla4xxx_free_ddb(ha, ddb_entry);
  85         }
  86 }
  87
  88 /**
  89  * qla4xxx_init_rings - initialize hw queues
  90  * @ha: pointer to host adapter structure.
  91  *
  92  * This routine initializes the internal queues for the specified adapter.
  93  * The QLA4010 requires us to restart the queues at index 0.
  94  * The QLA4000 doesn't care, so just default to QLA4010's requirement.
  95  **/
  96 int qla4xxx_init_rings(struct scsi_qla_host *ha)
  97 {
  98         unsigned long flags = 0;
  99
 100         /* Initialize request queue. */
 101         spin_lock_irqsave(&ha->hardware_lock, flags);
 102         ha->request_out = 0;
 103         ha->request_in = 0;
 104         ha->request_ptr = &ha->request_ring[ha->request_in];
 105         ha->req_q_count = REQUEST_QUEUE_DEPTH;
 106
 107         /* Initialize response queue. */
 108         ha->response_in = 0;
 109         ha->response_out = 0;
 110         ha->response_ptr = &ha->response_ring[ha->response_out];
 111
 112         /*
 113          * Initialize DMA Shadow registers.  The firmware is really supposed to
 114          * take care of this, but on some uniprocessor systems, the shadow
 115          * registers aren't cleared-- causing the interrupt_handler to think
 116          * there are responses to be processed when there aren't.
 117          */
 118         ha->shadow_regs->req_q_out = __constant_cpu_to_le32(0);
 119         ha->shadow_regs->rsp_q_in = __constant_cpu_to_le32(0);
 120         wmb();
 121
 122         writel(0, &ha->reg->req_q_in);
 123         writel(0, &ha->reg->rsp_q_out);
 124         readl(&ha->reg->rsp_q_out);
 125
 126         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 127
 128         return QLA_SUCCESS;
 129 }
 130
 131 /**
 132  * qla4xxx_validate_mac_address - validate adapter MAC address(es)
 133  * @ha: pointer to host adapter structure.
 134  *
 135  **/
 136 static int qla4xxx_validate_mac_address(struct scsi_qla_host *ha)
 137 {
 138         struct flash_sys_info *sys_info;
 139         dma_addr_t sys_info_dma;
 140         int status = QLA_ERROR;
 141
 142         sys_info = dma_alloc_coherent(&ha->pdev->dev, sizeof(*sys_info),
 143                                       &sys_info_dma, GFP_KERNEL);
 144         if (sys_info == NULL) {
 145                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
 146                               ha->host_no, __func__));
 147
 148                 goto exit_validate_mac_no_free;
 149         }
 150         memset(sys_info, 0, sizeof(*sys_info));
 151
 152         /* Get flash sys info */
 153         if (qla4xxx_get_flash(ha, sys_info_dma, FLASH_OFFSET_SYS_INFO,
 154                               sizeof(*sys_info)) != QLA_SUCCESS) {
 155                 DEBUG2(printk("scsi%ld: %s: get_flash FLASH_OFFSET_SYS_INFO "
 156                               "failed\n", ha->host_no, __func__));
 157
 158                 goto exit_validate_mac;
 159         }
 160
 161         /* Save M.A.C. address & serial_number */
 162         memcpy(ha->my_mac, &sys_info->physAddr[0].address[0],
 163                min(sizeof(ha->my_mac),
 164                    sizeof(sys_info->physAddr[0].address)));
 165         memcpy(ha->serial_number, &sys_info->acSerialNumber,
 166                min(sizeof(ha->serial_number),
 167                    sizeof(sys_info->acSerialNumber)));
 168
 169         status = QLA_SUCCESS;
 170
 171  exit_validate_mac:
 172         dma_free_coherent(&ha->pdev->dev, sizeof(*sys_info), sys_info,
 173                           sys_info_dma);
 174
 175  exit_validate_mac_no_free:
 176         return status;
 177 }
 178
 179 /**
 180  * qla4xxx_init_local_data - initialize adapter specific local data
 181  * @ha: pointer to host adapter structure.
 182  *
 183  **/
 184 static int qla4xxx_init_local_data(struct scsi_qla_host *ha)
 185 {
 186         /* Initilize aen queue */
 187         ha->aen_q_count = MAX_AEN_ENTRIES;
 188
 189         return qla4xxx_get_firmware_status(ha);
 190 }
 191
 192 static 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         uint32_t conn_err;
 509
 510         if (ddb_entry == NULL) {
 511                 DEBUG2(printk("scsi%ld: %s: ddb_entry is NULL\n", ha->host_no,
 512                               __func__));
 513                 goto exit_update_ddb;
 514         }
 515
 516         /* Make sure the dma buffer is valid */
 517         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
 518                                           sizeof(*fw_ddb_entry),
 519                                           &fw_ddb_entry_dma, GFP_KERNEL);
 520         if (fw_ddb_entry == NULL) {
 521                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
 522                               ha->host_no, __func__));
 523
 524                 goto exit_update_ddb;
 525         }
 526
 527         if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
 528                                     fw_ddb_entry_dma, NULL, NULL,
 529                                     &ddb_entry->fw_ddb_device_state, &conn_err,
 530                                     &ddb_entry->tcp_source_port_num,
 531                                     &ddb_entry->connection_id) ==
 532             QLA_ERROR) {
 533                 DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
 534                               "fw_ddb_index %d\n", ha->host_no, __func__,
 535                               fw_ddb_index));
 536
 537                 goto exit_update_ddb;
 538         }
 539
 540         status = QLA_SUCCESS;
 541         ddb_entry->options = le16_to_cpu(fw_ddb_entry->options);
 542         ddb_entry->target_session_id = le16_to_cpu(fw_ddb_entry->tsid);
 543         ddb_entry->task_mgmt_timeout =
 544                 le16_to_cpu(fw_ddb_entry->def_timeout);
 545         ddb_entry->CmdSn = 0;
 546         ddb_entry->exe_throttle = le16_to_cpu(fw_ddb_entry->exec_throttle);
 547         ddb_entry->default_relogin_timeout =
 548                 le16_to_cpu(fw_ddb_entry->def_timeout);
 549         ddb_entry->default_time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
 550
 551         /* Update index in case it changed */
 552         ddb_entry->fw_ddb_index = fw_ddb_index;
 553         ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
 554
 555         ddb_entry->port = le16_to_cpu(fw_ddb_entry->port);
 556         ddb_entry->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
 557         memcpy(ddb_entry->isid, fw_ddb_entry->isid, sizeof(ddb_entry->isid));
 558
 559         memcpy(&ddb_entry->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
 560                min(sizeof(ddb_entry->iscsi_name),
 561                    sizeof(fw_ddb_entry->iscsi_name)));
 562         memcpy(&ddb_entry->ip_addr[0], &fw_ddb_entry->ip_addr[0],
 563                min(sizeof(ddb_entry->ip_addr), sizeof(fw_ddb_entry->ip_addr)));
 564
 565         ddb_entry->iscsi_max_burst_len = fw_ddb_entry->iscsi_max_burst_len;
 566         ddb_entry->iscsi_max_outsnd_r2t = fw_ddb_entry->iscsi_max_outsnd_r2t;
 567         ddb_entry->iscsi_first_burst_len = fw_ddb_entry->iscsi_first_burst_len;
 568         ddb_entry->iscsi_max_rcv_data_seg_len =
 569                                 fw_ddb_entry->iscsi_max_rcv_data_seg_len;
 570         ddb_entry->iscsi_max_snd_data_seg_len =
 571                                 fw_ddb_entry->iscsi_max_snd_data_seg_len;
 572
 573         if (ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
 574                 memcpy(&ddb_entry->remote_ipv6_addr,
 575                         fw_ddb_entry->ip_addr,
 576                         min(sizeof(ddb_entry->remote_ipv6_addr),
 577                         sizeof(fw_ddb_entry->ip_addr)));
 578                 memcpy(&ddb_entry->link_local_ipv6_addr,
 579                         fw_ddb_entry->link_local_ipv6_addr,
 580                         min(sizeof(ddb_entry->link_local_ipv6_addr),
 581                         sizeof(fw_ddb_entry->link_local_ipv6_addr)));
 582
 583                 DEBUG2(dev_info(&ha->pdev->dev, "%s: DDB[%d] osIdx = %d "
 584                                         "State %04x ConnErr %08x IP %pI6 "
 585                                         ":%04d \"%s\"\n",
 586                                         __func__, fw_ddb_index,
 587                                         ddb_entry->os_target_id,
 588                                         ddb_entry->fw_ddb_device_state,
 589                                         conn_err, fw_ddb_entry->ip_addr,
 590                                         le16_to_cpu(fw_ddb_entry->port),
 591                                         fw_ddb_entry->iscsi_name));
 592         } else
 593                 DEBUG2(dev_info(&ha->pdev->dev, "%s: DDB[%d] osIdx = %d "
 594                                         "State %04x ConnErr %08x IP %pI4 "
 595                                         ":%04d \"%s\"\n",
 596                                         __func__, fw_ddb_index,
 597                                         ddb_entry->os_target_id,
 598                                         ddb_entry->fw_ddb_device_state,
 599                                         conn_err, fw_ddb_entry->ip_addr,
 600                                         le16_to_cpu(fw_ddb_entry->port),
 601                                         fw_ddb_entry->iscsi_name));
 602 exit_update_ddb:
 603         if (fw_ddb_entry)
 604                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
 605                                   fw_ddb_entry, fw_ddb_entry_dma);
 606
 607         return status;
 608 }
 609
 610 /**
 611  * qla4xxx_alloc_ddb - allocate device database entry
 612  * @ha: Pointer to host adapter structure.
 613  * @fw_ddb_index: Firmware's device database index
 614  *
 615  * This routine allocates a ddb_entry, ititializes some values, and
 616  * inserts it into the ddb list.
 617  **/
 618 static struct ddb_entry * qla4xxx_alloc_ddb(struct scsi_qla_host *ha,
 619                                             uint32_t fw_ddb_index)
 620 {
 621         struct ddb_entry *ddb_entry;
 622
 623         DEBUG2(printk("scsi%ld: %s: fw_ddb_index [%d]\n", ha->host_no,
 624                       __func__, fw_ddb_index));
 625
 626         ddb_entry = qla4xxx_alloc_sess(ha);
 627         if (ddb_entry == NULL) {
 628                 DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
 629                               "to add fw_ddb_index [%d]\n",
 630                               ha->host_no, __func__, fw_ddb_index));
 631                 return ddb_entry;
 632         }
 633
 634         ddb_entry->fw_ddb_index = fw_ddb_index;
 635         atomic_set(&ddb_entry->port_down_timer, ha->port_down_retry_count);
 636         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
 637         atomic_set(&ddb_entry->relogin_timer, 0);
 638         atomic_set(&ddb_entry->relogin_retry_count, 0);
 639         atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
 640         list_add_tail(&ddb_entry->list, &ha->ddb_list);
 641         ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
 642         ha->tot_ddbs++;
 643
 644         return ddb_entry;
 645 }
 646
 647 /**
 648  * qla4_is_relogin_allowed - Are we allowed to login?
 649  * @ha: Pointer to host adapter structure.
 650  * @conn_err: Last connection error associated with the ddb
 651  *
 652  * This routine tests the given connection error to determine if
 653  * we are allowed to login.
 654  **/
 655 int qla4_is_relogin_allowed(struct scsi_qla_host *ha, uint32_t conn_err)
 656 {
 657         uint32_t err_code, login_rsp_sts_class;
 658         int relogin = 1;
 659
 660         err_code = ((conn_err & 0x00ff0000) >> 16);
 661         login_rsp_sts_class = ((conn_err & 0x0000ff00) >> 8);
 662         if (err_code == 0x1c || err_code == 0x06) {
 663                 DEBUG2(dev_info(&ha->pdev->dev,
 664                                 ": conn_err=0x%08x, send target completed"
 665                                 " or access denied failure\n", conn_err));
 666                 relogin = 0;
 667         }
 668         if ((err_code == 0x08) && (login_rsp_sts_class == 0x02)) {
 669                 /* Login Response PDU returned an error.
 670                    Login Response Status in Error Code Detail
 671                    indicates login should not be retried.*/
 672                 DEBUG2(dev_info(&ha->pdev->dev,
 673                                 ": conn_err=0x%08x, do not retry relogin\n",
 674                                 conn_err));
 675                 relogin = 0;
 676         }
 677
 678         return relogin;
 679 }
 680
 681 /**
 682  * qla4xxx_configure_ddbs - builds driver ddb list
 683  * @ha: Pointer to host adapter structure.
 684  *
 685  * This routine searches for all valid firmware ddb entries and builds
 686  * an internal ddb list. Ddbs that are considered valid are those with
 687  * a device state of SESSION_ACTIVE.
 688  **/
 689 static int qla4xxx_build_ddb_list(struct scsi_qla_host *ha)
 690 {
 691         int status = QLA_SUCCESS;
 692         uint32_t fw_ddb_index = 0;
 693         uint32_t next_fw_ddb_index = 0;
 694         uint32_t ddb_state;
 695         uint32_t conn_err;
 696         struct ddb_entry *ddb_entry;
 697         struct dev_db_entry *fw_ddb_entry = NULL;
 698         dma_addr_t fw_ddb_entry_dma;
 699         uint32_t ipv6_device;
 700         uint32_t new_tgt;
 701
 702         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
 703                         &fw_ddb_entry_dma, GFP_KERNEL);
 704         if (fw_ddb_entry == NULL) {
 705                 DEBUG2(dev_info(&ha->pdev->dev, "%s: DMA alloc failed\n",
 706                                 __func__));
 707                 return QLA_ERROR;
 708         }
 709
 710         dev_info(&ha->pdev->dev, "Initializing DDBs ...\n");
 711         for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES;
 712              fw_ddb_index = next_fw_ddb_index) {
 713                 /* First, let's see if a device exists here */
 714                 if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
 715                                             0, NULL, &next_fw_ddb_index,
 716                                             &ddb_state, &conn_err,
 717                                             NULL, NULL) ==
 718                                             QLA_ERROR) {
 719                         DEBUG2(printk("scsi%ld: %s: get_ddb_entry, "
 720                                       "fw_ddb_index %d failed", ha->host_no,
 721                                       __func__, fw_ddb_index));
 722                         return QLA_ERROR;
 723                 }
 724
 725                 DEBUG2(printk("scsi%ld: %s: Getting DDB[%d] ddbstate=0x%x, "
 726                               "next_fw_ddb_index=%d.\n", ha->host_no, __func__,
 727                               fw_ddb_index, ddb_state, next_fw_ddb_index));
 728
 729                 /* Issue relogin, if necessary. */
 730                 if (ddb_state == DDB_DS_SESSION_FAILED ||
 731                     ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) {
 732                         /* Try and login to device */
 733                         DEBUG2(printk("scsi%ld: %s: Login to DDB[%d]\n",
 734                                       ha->host_no, __func__, fw_ddb_index));
 735                         ipv6_device = le16_to_cpu(fw_ddb_entry->options) &
 736                                         DDB_OPT_IPV6_DEVICE;
 737                         if (qla4_is_relogin_allowed(ha, conn_err) &&
 738                                         ((!ipv6_device &&
 739                                           *((uint32_t *)fw_ddb_entry->ip_addr))
 740                                          || ipv6_device)) {
 741                                 qla4xxx_set_ddb_entry(ha, fw_ddb_index, 0);
 742                                 if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index,
 743                                                         NULL, 0, NULL,
 744                                                         &next_fw_ddb_index,
 745                                                         &ddb_state, &conn_err,
 746                                                         NULL, NULL)
 747                                                 == QLA_ERROR) {
 748                                         DEBUG2(printk("scsi%ld: %s:"
 749                                                 "get_ddb_entry %d failed\n",
 750                                                 ha->host_no,
 751                                                 __func__, fw_ddb_index));
 752                                         return QLA_ERROR;
 753                                 }
 754                         }
 755                 }
 756
 757                 if (ddb_state != DDB_DS_SESSION_ACTIVE)
 758                         goto next_one;
 759                 /*
 760                  * if fw_ddb with session active state found,
 761                  * add to ddb_list
 762                  */
 763                 DEBUG2(printk("scsi%ld: %s: DDB[%d] added to list\n",
 764                               ha->host_no, __func__, fw_ddb_index));
 765
 766                 /* Add DDB to internal our ddb list. */
 767                 ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index, &new_tgt);
 768                 if (ddb_entry == NULL) {
 769                         DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
 770                                       "for device at fw_ddb_index %d\n",
 771                                       ha->host_no, __func__, fw_ddb_index));
 772                         return QLA_ERROR;
 773                 }
 774                 /* Fill in the device structure */
 775                 if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
 776                     QLA_ERROR) {
 777                         ha->fw_ddb_index_map[fw_ddb_index] =
 778                                 (struct ddb_entry *)INVALID_ENTRY;
 779
 780
 781                         DEBUG2(printk("scsi%ld: %s: update_ddb_entry failed "
 782                                       "for fw_ddb_index %d.\n",
 783                                       ha->host_no, __func__, fw_ddb_index));
 784                         return QLA_ERROR;
 785                 }
 786
 787 next_one:
 788                 /* We know we've reached the last device when
 789                  * next_fw_ddb_index is 0 */
 790                 if (next_fw_ddb_index == 0)
 791                         break;
 792         }
 793
 794         dev_info(&ha->pdev->dev, "DDB list done..\n");
 795
 796         return status;
 797 }
 798
 799 struct qla4_relog_scan {
 800         int halt_wait;
 801         uint32_t conn_err;
 802         uint32_t fw_ddb_index;
 803         uint32_t next_fw_ddb_index;
 804         uint32_t fw_ddb_device_state;
 805 };
 806
 807 static int qla4_test_rdy(struct scsi_qla_host *ha, struct qla4_relog_scan *rs)
 808 {
 809         struct ddb_entry *ddb_entry;
 810
 811         if (qla4_is_relogin_allowed(ha, rs->conn_err)) {
 812                 /* We either have a device that is in
 813                  * the process of relogging in or a
 814                  * device that is waiting to be
 815                  * relogged in */
 816                 rs->halt_wait = 0;
 817
 818                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha,
 819                                                            rs->fw_ddb_index);
 820                 if (ddb_entry == NULL)
 821                         return QLA_ERROR;
 822
 823                 if (ddb_entry->dev_scan_wait_to_start_relogin != 0
 824                     && time_after_eq(jiffies,
 825                                      ddb_entry->
 826                                      dev_scan_wait_to_start_relogin))
 827                 {
 828                         ddb_entry->dev_scan_wait_to_start_relogin = 0;
 829                         qla4xxx_set_ddb_entry(ha, rs->fw_ddb_index, 0);
 830                 }
 831         }
 832         return QLA_SUCCESS;
 833 }
 834
 835 static int qla4_scan_for_relogin(struct scsi_qla_host *ha,
 836                                  struct qla4_relog_scan *rs)
 837 {
 838         int error;
 839
 840         /* scan for relogins
 841          * ----------------- */
 842         for (rs->fw_ddb_index = 0; rs->fw_ddb_index < MAX_DDB_ENTRIES;
 843              rs->fw_ddb_index = rs->next_fw_ddb_index) {
 844                 if (qla4xxx_get_fwddb_entry(ha, rs->fw_ddb_index, NULL, 0,
 845                                             NULL, &rs->next_fw_ddb_index,
 846                                             &rs->fw_ddb_device_state,
 847                                             &rs->conn_err, NULL, NULL)
 848                     == QLA_ERROR)
 849                         return QLA_ERROR;
 850
 851                 if (rs->fw_ddb_device_state == DDB_DS_LOGIN_IN_PROCESS)
 852                         rs->halt_wait = 0;
 853
 854                 if (rs->fw_ddb_device_state == DDB_DS_SESSION_FAILED ||
 855                     rs->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE) {
 856                         error = qla4_test_rdy(ha, rs);
 857                         if (error)
 858                                 return error;
 859                 }
 860
 861                 /* We know we've reached the last device when
 862                  * next_fw_ddb_index is 0 */
 863                 if (rs->next_fw_ddb_index == 0)
 864                         break;
 865         }
 866         return QLA_SUCCESS;
 867 }
 868
 869 /**
 870  * qla4xxx_devices_ready - wait for target devices to be logged in
 871  * @ha: pointer to adapter structure
 872  *
 873  * This routine waits up to ql4xdiscoverywait seconds
 874  * F/W database during driver load time.
 875  **/
 876 static int qla4xxx_devices_ready(struct scsi_qla_host *ha)
 877 {
 878         int error;
 879         unsigned long discovery_wtime;
 880         struct qla4_relog_scan rs;
 881
 882         discovery_wtime = jiffies + (ql4xdiscoverywait * HZ);
 883
 884         DEBUG(printk("Waiting (%d) for devices ...\n", ql4xdiscoverywait));
 885         do {
 886                 /* poll for AEN. */
 887                 qla4xxx_get_firmware_state(ha);
 888                 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) {
 889                         /* Set time-between-relogin timer */
 890                         qla4xxx_process_aen(ha, RELOGIN_DDB_CHANGED_AENS);
 891                 }
 892
 893                 /* if no relogins active or needed, halt discvery wait */
 894                 rs.halt_wait = 1;
 895
 896                 error = qla4_scan_for_relogin(ha, &rs);
 897
 898                 if (rs.halt_wait) {
 899                         DEBUG2(printk("scsi%ld: %s: Delay halted.  Devices "
 900                                       "Ready.\n", ha->host_no, __func__));
 901                         return QLA_SUCCESS;
 902                 }
 903
 904                 msleep(2000);
 905         } while (!time_after_eq(jiffies, discovery_wtime));
 906
 907         DEBUG3(qla4xxx_get_conn_event_log(ha));
 908
 909         return QLA_SUCCESS;
 910 }
 911
 912 static void qla4xxx_flush_AENS(struct scsi_qla_host *ha)
 913 {
 914         unsigned long wtime;
 915
 916         /* Flush the 0x8014 AEN from the firmware as a result of
 917          * Auto connect. We are basically doing get_firmware_ddb()
 918          * to determine whether we need to log back in or not.
 919          *  Trying to do a set ddb before we have processed 0x8014
 920          *  will result in another set_ddb() for the same ddb. In other
 921          *  words there will be stale entries in the aen_q.
 922          */
 923         wtime = jiffies + (2 * HZ);
 924         do {
 925                 if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS)
 926                         if (ha->firmware_state & (BIT_2 | BIT_0))
 927                                 return;
 928
 929                 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
 930                         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
 931
 932                 msleep(1000);
 933         } while (!time_after_eq(jiffies, wtime));
 934
 935 }
 936
 937 static int qla4xxx_initialize_ddb_list(struct scsi_qla_host *ha)
 938 {
 939         uint16_t fw_ddb_index;
 940         int status = QLA_SUCCESS;
 941
 942         /* free the ddb list if is not empty */
 943         if (!list_empty(&ha->ddb_list))
 944                 qla4xxx_free_ddb_list(ha);
 945
 946         for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES; fw_ddb_index++)
 947                 ha->fw_ddb_index_map[fw_ddb_index] =
 948                         (struct ddb_entry *)INVALID_ENTRY;
 949
 950         ha->tot_ddbs = 0;
 951
 952         qla4xxx_flush_AENS(ha);
 953
 954         /*
 955          * First perform device discovery for active
 956          * fw ddb indexes and build
 957          * ddb list.
 958          */
 959         if ((status = qla4xxx_build_ddb_list(ha)) == QLA_ERROR)
 960                 return status;
 961
 962         /* Wait for an AEN */
 963         qla4xxx_devices_ready(ha);
 964
 965         /*
 966          * Targets can come online after the inital discovery, so processing
 967          * the aens here will catch them.
 968          */
 969         if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
 970                 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
 971
 972         return status;
 973 }
 974
 975 /**
 976  * qla4xxx_update_ddb_list - update the driver ddb list
 977  * @ha: pointer to host adapter structure.
 978  *
 979  * This routine obtains device information from the F/W database after
 980  * firmware or adapter resets.  The device table is preserved.
 981  **/
 982 int qla4xxx_reinitialize_ddb_list(struct scsi_qla_host *ha)
 983 {
 984         int status = QLA_SUCCESS;
 985         struct ddb_entry *ddb_entry, *detemp;
 986
 987         /* Update the device information for all devices. */
 988         list_for_each_entry_safe(ddb_entry, detemp, &ha->ddb_list, list) {
 989                 qla4xxx_update_ddb_entry(ha, ddb_entry,
 990                                          ddb_entry->fw_ddb_index);
 991                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
 992                         atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
 993                         DEBUG2(printk ("scsi%ld: %s: ddb index [%d] marked "
 994                                        "ONLINE\n", ha->host_no, __func__,
 995                                        ddb_entry->fw_ddb_index));
 996                 } else if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
 997                         qla4xxx_mark_device_missing(ha, ddb_entry);
 998         }
 999         return status;
1000 }
1001
1002 /**
1003  * qla4xxx_relogin_device - re-establish session
1004  * @ha: Pointer to host adapter structure.
1005  * @ddb_entry: Pointer to device database entry
1006  *
1007  * This routine does a session relogin with the specified device.
1008  * The ddb entry must be assigned prior to making this call.
1009  **/
1010 int qla4xxx_relogin_device(struct scsi_qla_host *ha,
1011                            struct ddb_entry * ddb_entry)
1012 {
1013         uint16_t relogin_timer;
1014
1015         relogin_timer = max(ddb_entry->default_relogin_timeout,
1016                             (uint16_t)RELOGIN_TOV);
1017         atomic_set(&ddb_entry->relogin_timer, relogin_timer);
1018
1019         DEBUG2(printk("scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
1020                       ddb_entry->fw_ddb_index, relogin_timer));
1021
1022         qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index, 0);
1023
1024         return QLA_SUCCESS;
1025 }
1026
1027 static int qla4xxx_config_nvram(struct scsi_qla_host *ha)
1028 {
1029         unsigned long flags;
1030         union external_hw_config_reg extHwConfig;
1031
1032         DEBUG2(printk("scsi%ld: %s: Get EEProm parameters \n", ha->host_no,
1033                       __func__));
1034         if (ql4xxx_lock_flash(ha) != QLA_SUCCESS)
1035                 return QLA_ERROR;
1036         if (ql4xxx_lock_nvram(ha) != QLA_SUCCESS) {
1037                 ql4xxx_unlock_flash(ha);
1038                 return QLA_ERROR;
1039         }
1040
1041         /* Get EEPRom Parameters from NVRAM and validate */
1042         dev_info(&ha->pdev->dev, "Configuring NVRAM ...\n");
1043         if (qla4xxx_is_nvram_configuration_valid(ha) == QLA_SUCCESS) {
1044                 spin_lock_irqsave(&ha->hardware_lock, flags);
1045                 extHwConfig.Asuint32_t =
1046                         rd_nvram_word(ha, eeprom_ext_hw_conf_offset(ha));
1047                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1048         } else {
1049                 dev_warn(&ha->pdev->dev,
1050                            "scsi%ld: %s: EEProm checksum invalid.  "
1051                            "Please update your EEPROM\n", ha->host_no,
1052                            __func__);
1053
1054                 /* Attempt to set defaults */
1055                 if (is_qla4010(ha))
1056                         extHwConfig.Asuint32_t = 0x1912;
1057                 else if (is_qla4022(ha) | is_qla4032(ha))
1058                         extHwConfig.Asuint32_t = 0x0023;
1059                 else
1060                         return QLA_ERROR;
1061         }
1062         DEBUG(printk("scsi%ld: %s: Setting extHwConfig to 0xFFFF%04x\n",
1063                      ha->host_no, __func__, extHwConfig.Asuint32_t));
1064
1065         spin_lock_irqsave(&ha->hardware_lock, flags);
1066         writel((0xFFFF << 16) | extHwConfig.Asuint32_t, isp_ext_hw_conf(ha));
1067         readl(isp_ext_hw_conf(ha));
1068         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1069
1070         ql4xxx_unlock_nvram(ha);
1071         ql4xxx_unlock_flash(ha);
1072
1073         return QLA_SUCCESS;
1074 }
1075
1076 static void qla4x00_pci_config(struct scsi_qla_host *ha)
1077 {
1078         uint16_t w;
1079         int status;
1080
1081         dev_info(&ha->pdev->dev, "Configuring PCI space...\n");
1082
1083         pci_set_master(ha->pdev);
1084         status = pci_set_mwi(ha->pdev);
1085         /*
1086          * We want to respect framework's setting of PCI configuration space
1087          * command register and also want to make sure that all bits of
1088          * interest to us are properly set in command register.
1089          */
1090         pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
1091         w |= PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
1092         w &= ~PCI_COMMAND_INTX_DISABLE;
1093         pci_write_config_word(ha->pdev, PCI_COMMAND, w);
1094 }
1095
1096 static int qla4xxx_start_firmware_from_flash(struct scsi_qla_host *ha)
1097 {
1098         int status = QLA_ERROR;
1099         unsigned long max_wait_time;
1100         unsigned long flags;
1101         uint32_t mbox_status;
1102
1103         dev_info(&ha->pdev->dev, "Starting firmware ...\n");
1104
1105         /*
1106          * Start firmware from flash ROM
1107          *
1108          * WORKAROUND: Stuff a non-constant value that the firmware can
1109          * use as a seed for a random number generator in MB7 prior to
1110          * setting BOOT_ENABLE.  Fixes problem where the TCP
1111          * connections use the same TCP ports after each reboot,
1112          * causing some connections to not get re-established.
1113          */
1114         DEBUG(printk("scsi%d: %s: Start firmware from flash ROM\n",
1115                      ha->host_no, __func__));
1116
1117         spin_lock_irqsave(&ha->hardware_lock, flags);
1118         writel(jiffies, &ha->reg->mailbox[7]);
1119         if (is_qla4022(ha) | is_qla4032(ha))
1120                 writel(set_rmask(NVR_WRITE_ENABLE),
1121                        &ha->reg->u1.isp4022.nvram);
1122
1123         writel(2, &ha->reg->mailbox[6]);
1124         readl(&ha->reg->mailbox[6]);
1125
1126         writel(set_rmask(CSR_BOOT_ENABLE), &ha->reg->ctrl_status);
1127         readl(&ha->reg->ctrl_status);
1128         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1129
1130         /* Wait for firmware to come UP. */
1131         DEBUG2(printk(KERN_INFO "scsi%ld: %s: Wait up to %d seconds for "
1132                       "boot firmware to complete...\n",
1133                       ha->host_no, __func__, FIRMWARE_UP_TOV));
1134         max_wait_time = jiffies + (FIRMWARE_UP_TOV * HZ);
1135         do {
1136                 uint32_t ctrl_status;
1137
1138                 spin_lock_irqsave(&ha->hardware_lock, flags);
1139                 ctrl_status = readw(&ha->reg->ctrl_status);
1140                 mbox_status = readw(&ha->reg->mailbox[0]);
1141                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1142
1143                 if (ctrl_status & set_rmask(CSR_SCSI_PROCESSOR_INTR))
1144                         break;
1145                 if (mbox_status == MBOX_STS_COMMAND_COMPLETE)
1146                         break;
1147
1148                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: Waiting for boot "
1149                               "firmware to complete... ctrl_sts=0x%x\n",
1150                               ha->host_no, __func__, ctrl_status));
1151
1152                 msleep_interruptible(250);
1153         } while (!time_after_eq(jiffies, max_wait_time));
1154
1155         if (mbox_status == MBOX_STS_COMMAND_COMPLETE) {
1156                 DEBUG(printk(KERN_INFO "scsi%ld: %s: Firmware has started\n",
1157                              ha->host_no, __func__));
1158
1159                 spin_lock_irqsave(&ha->hardware_lock, flags);
1160                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
1161                        &ha->reg->ctrl_status);
1162                 readl(&ha->reg->ctrl_status);
1163                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1164
1165                 status = QLA_SUCCESS;
1166         } else {
1167                 printk(KERN_INFO "scsi%ld: %s: Boot firmware failed "
1168                        "-  mbox status 0x%x\n", ha->host_no, __func__,
1169                        mbox_status);
1170                 status = QLA_ERROR;
1171         }
1172         return status;
1173 }
1174
1175 int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
1176 {
1177 #define QL4_LOCK_DRVR_WAIT      60
1178 #define QL4_LOCK_DRVR_SLEEP     1
1179
1180         int drvr_wait = QL4_LOCK_DRVR_WAIT;
1181         while (drvr_wait) {
1182                 if (ql4xxx_lock_drvr(a) == 0) {
1183                         ssleep(QL4_LOCK_DRVR_SLEEP);
1184                         if (drvr_wait) {
1185                                 DEBUG2(printk("scsi%ld: %s: Waiting for "
1186                                               "Global Init Semaphore(%d)...\n",
1187                                               a->host_no,
1188                                               __func__, drvr_wait));
1189                         }
1190                         drvr_wait -= QL4_LOCK_DRVR_SLEEP;
1191                 } else {
1192                         DEBUG2(printk("scsi%ld: %s: Global Init Semaphore "
1193                                       "acquired\n", a->host_no, __func__));
1194                         return QLA_SUCCESS;
1195                 }
1196         }
1197         return QLA_ERROR;
1198 }
1199
1200 /**
1201  * qla4xxx_start_firmware - starts qla4xxx firmware
1202  * @ha: Pointer to host adapter structure.
1203  *
1204  * This routine performs the necessary steps to start the firmware for
1205  * the QLA4010 adapter.
1206  **/
1207 static int qla4xxx_start_firmware(struct scsi_qla_host *ha)
1208 {
1209         unsigned long flags = 0;
1210         uint32_t mbox_status;
1211         int status = QLA_ERROR;
1212         int soft_reset = 1;
1213         int config_chip = 0;
1214
1215         if (is_qla4022(ha) | is_qla4032(ha))
1216                 ql4xxx_set_mac_number(ha);
1217
1218         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
1219                 return QLA_ERROR;
1220
1221         spin_lock_irqsave(&ha->hardware_lock, flags);
1222
1223         DEBUG2(printk("scsi%ld: %s: port_ctrl   = 0x%08X\n", ha->host_no,
1224                       __func__, readw(isp_port_ctrl(ha))));
1225         DEBUG(printk("scsi%ld: %s: port_status = 0x%08X\n", ha->host_no,
1226                      __func__, readw(isp_port_status(ha))));
1227
1228         /* Is Hardware already initialized? */
1229         if ((readw(isp_port_ctrl(ha)) & 0x8000) != 0) {
1230                 DEBUG(printk("scsi%ld: %s: Hardware has already been "
1231                              "initialized\n", ha->host_no, __func__));
1232
1233                 /* Receive firmware boot acknowledgement */
1234                 mbox_status = readw(&ha->reg->mailbox[0]);
1235
1236                 DEBUG2(printk("scsi%ld: %s: H/W Config complete - mbox[0]= "
1237                               "0x%x\n", ha->host_no, __func__, mbox_status));
1238
1239                 /* Is firmware already booted? */
1240                 if (mbox_status == 0) {
1241                         /* F/W not running, must be config by net driver */
1242                         config_chip = 1;
1243                         soft_reset = 0;
1244                 } else {
1245                         writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
1246                                &ha->reg->ctrl_status);
1247                         readl(&ha->reg->ctrl_status);
1248                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1249                         if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
1250                                 DEBUG2(printk("scsi%ld: %s: Get firmware "
1251                                               "state -- state = 0x%x\n",
1252                                               ha->host_no,
1253                                               __func__, ha->firmware_state));
1254                                 /* F/W is running */
1255                                 if (ha->firmware_state &
1256                                     FW_STATE_CONFIG_WAIT) {
1257                                         DEBUG2(printk("scsi%ld: %s: Firmware "
1258                                                       "in known state -- "
1259                                                       "config and "
1260                                                       "boot, state = 0x%x\n",
1261                                                       ha->host_no, __func__,
1262                                                       ha->firmware_state));
1263                                         config_chip = 1;
1264                                         soft_reset = 0;
1265                                 }
1266                         } else {
1267                                 DEBUG2(printk("scsi%ld: %s: Firmware in "
1268                                               "unknown state -- resetting,"
1269                                               " state = "
1270                                               "0x%x\n", ha->host_no, __func__,
1271                                               ha->firmware_state));
1272                         }
1273                         spin_lock_irqsave(&ha->hardware_lock, flags);
1274                 }
1275         } else {
1276                 DEBUG(printk("scsi%ld: %s: H/W initialization hasn't been "
1277                              "started - resetting\n", ha->host_no, __func__));
1278         }
1279         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1280
1281         DEBUG(printk("scsi%ld: %s: Flags soft_rest=%d, config= %d\n ",
1282                      ha->host_no, __func__, soft_reset, config_chip));
1283         if (soft_reset) {
1284                 DEBUG(printk("scsi%ld: %s: Issue Soft Reset\n", ha->host_no,
1285                              __func__));
1286                 status = qla4xxx_soft_reset(ha);
1287                 if (status == QLA_ERROR) {
1288                         DEBUG(printk("scsi%d: %s: Soft Reset failed!\n",
1289                                      ha->host_no, __func__));
1290                         ql4xxx_unlock_drvr(ha);
1291                         return QLA_ERROR;
1292                 }
1293                 config_chip = 1;
1294
1295                 /* Reset clears the semaphore, so acquire again */
1296                 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
1297                         return QLA_ERROR;
1298         }
1299
1300         if (config_chip) {
1301                 if ((status = qla4xxx_config_nvram(ha)) == QLA_SUCCESS)
1302                         status = qla4xxx_start_firmware_from_flash(ha);
1303         }
1304
1305         ql4xxx_unlock_drvr(ha);
1306         if (status == QLA_SUCCESS) {
1307                 qla4xxx_get_fw_version(ha);
1308                 if (test_and_clear_bit(AF_GET_CRASH_RECORD, &ha->flags))
1309                         qla4xxx_get_crash_record(ha);
1310         } else {
1311                 DEBUG(printk("scsi%ld: %s: Firmware has NOT started\n",
1312                              ha->host_no, __func__));
1313         }
1314         return status;
1315 }
1316
1317
1318 /**
1319  * qla4xxx_initialize_adapter - initiailizes hba
1320  * @ha: Pointer to host adapter structure.
1321  * @renew_ddb_list: Indicates what to do with the adapter's ddb list
1322  *      after adapter recovery has completed.
1323  *      0=preserve ddb list, 1=destroy and rebuild ddb list
1324  *
1325  * This routine parforms all of the steps necessary to initialize the adapter.
1326  *
1327  **/
1328 int qla4xxx_initialize_adapter(struct scsi_qla_host *ha,
1329                                uint8_t renew_ddb_list)
1330 {
1331         int status = QLA_ERROR;
1332         int8_t ip_address[IP_ADDR_LEN] = {0} ;
1333
1334         clear_bit(AF_ONLINE, &ha->flags);
1335         ha->eeprom_cmd_data = 0;
1336
1337         qla4x00_pci_config(ha);
1338
1339         qla4xxx_disable_intrs(ha);
1340
1341         /* Initialize the Host adapter request/response queues and firmware */
1342         if (qla4xxx_start_firmware(ha) == QLA_ERROR)
1343                 goto exit_init_hba;
1344
1345         if (qla4xxx_validate_mac_address(ha) == QLA_ERROR)
1346                 goto exit_init_hba;
1347
1348         if (qla4xxx_init_local_data(ha) == QLA_ERROR)
1349                 goto exit_init_hba;
1350
1351         status = qla4xxx_init_firmware(ha);
1352         if (status == QLA_ERROR)
1353                 goto exit_init_hba;
1354
1355         /*
1356          * FW is waiting to get an IP address from DHCP server: Skip building
1357          * the ddb_list and wait for DHCP lease acquired aen to come in
1358          * followed by 0x8014 aen" to trigger the tgt discovery process.
1359          */
1360         if (ha->firmware_state & FW_STATE_CONFIGURING_IP)
1361                 goto exit_init_online;
1362
1363         /* Skip device discovery if ip and subnet is zero */
1364         if (memcmp(ha->ip_address, ip_address, IP_ADDR_LEN) == 0 ||
1365             memcmp(ha->subnet_mask, ip_address, IP_ADDR_LEN) == 0)
1366                 goto exit_init_online;
1367
1368         if (renew_ddb_list == PRESERVE_DDB_LIST) {
1369                 /*
1370                  * We want to preserve lun states (i.e. suspended, etc.)
1371                  * for recovery initiated by the driver.  So just update
1372                  * the device states for the existing ddb_list.
1373                  */
1374                 qla4xxx_reinitialize_ddb_list(ha);
1375         } else if (renew_ddb_list == REBUILD_DDB_LIST) {
1376                 /*
1377                  * We want to build the ddb_list from scratch during
1378                  * driver initialization and recovery initiated by the
1379                  * INT_HBA_RESET IOCTL.
1380                  */
1381                 status = qla4xxx_initialize_ddb_list(ha);
1382                 if (status == QLA_ERROR) {
1383                         DEBUG2(printk("%s(%ld) Error occurred during build"
1384                                       "ddb list\n", __func__, ha->host_no));
1385                         goto exit_init_hba;
1386                 }
1387
1388         }
1389         if (!ha->tot_ddbs) {
1390                 DEBUG2(printk("scsi%ld: Failed to initialize devices or none "
1391                               "present in Firmware device database\n",
1392                               ha->host_no));
1393         }
1394
1395 exit_init_online:
1396         set_bit(AF_ONLINE, &ha->flags);
1397 exit_init_hba:
1398         return status;
1399 }
1400
1401 /**
1402  * qla4xxx_add_device_dynamically - ddb addition due to an AEN
1403  * @ha:  Pointer to host adapter structure.
1404  * @fw_ddb_index:  Firmware's device database index
1405  *
1406  * This routine processes adds a device as a result of an 8014h AEN.
1407  **/
1408 static void qla4xxx_add_device_dynamically(struct scsi_qla_host *ha,
1409                                            uint32_t fw_ddb_index)
1410 {
1411         struct ddb_entry * ddb_entry;
1412         uint32_t new_tgt;
1413
1414         /* First allocate a device structure */
1415         ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index, &new_tgt);
1416         if (ddb_entry == NULL) {
1417                 DEBUG2(printk(KERN_WARNING
1418                               "scsi%ld: Unable to allocate memory to add "
1419                               "fw_ddb_index %d\n", ha->host_no, fw_ddb_index));
1420                 return;
1421         }
1422
1423         if (!new_tgt && (ddb_entry->fw_ddb_index != fw_ddb_index)) {
1424                 /* Target has been bound to a new fw_ddb_index */
1425                 qla4xxx_free_ddb(ha, ddb_entry);
1426                 ddb_entry = qla4xxx_alloc_ddb(ha, fw_ddb_index);
1427                 if (ddb_entry == NULL) {
1428                         DEBUG2(printk(KERN_WARNING
1429                                 "scsi%ld: Unable to allocate memory"
1430                                 " to add fw_ddb_index %d\n",
1431                                 ha->host_no, fw_ddb_index));
1432                         return;
1433                 }
1434         }
1435         if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
1436                                     QLA_ERROR) {
1437                 ha->fw_ddb_index_map[fw_ddb_index] =
1438                                         (struct ddb_entry *)INVALID_ENTRY;
1439                 DEBUG2(printk(KERN_WARNING
1440                               "scsi%ld: failed to add new device at index "
1441                               "[%d]\n Unable to retrieve fw ddb entry\n",
1442                               ha->host_no, fw_ddb_index));
1443                 qla4xxx_free_ddb(ha, ddb_entry);
1444                 return;
1445         }
1446
1447         if (qla4xxx_add_sess(ddb_entry)) {
1448                 DEBUG2(printk(KERN_WARNING
1449                               "scsi%ld: failed to add new device at index "
1450                               "[%d]\n Unable to add connection and session\n",
1451                               ha->host_no, fw_ddb_index));
1452                 qla4xxx_free_ddb(ha, ddb_entry);
1453         }
1454 }
1455
1456 /**
1457  * qla4xxx_process_ddb_changed - process ddb state change
1458  * @ha - Pointer to host adapter structure.
1459  * @fw_ddb_index - Firmware's device database index
1460  * @state - Device state
1461  *
1462  * This routine processes a Decive Database Changed AEN Event.
1463  **/
1464 int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
1465                 uint32_t state, uint32_t conn_err)
1466 {
1467         struct ddb_entry * ddb_entry;
1468         uint32_t old_fw_ddb_device_state;
1469
1470         /* check for out of range index */
1471         if (fw_ddb_index >= MAX_DDB_ENTRIES)
1472                 return QLA_ERROR;
1473
1474         /* Get the corresponging ddb entry */
1475         ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
1476         /* Device does not currently exist in our database. */
1477         if (ddb_entry == NULL) {
1478                 if (state == DDB_DS_SESSION_ACTIVE)
1479                         qla4xxx_add_device_dynamically(ha, fw_ddb_index);
1480                 return QLA_SUCCESS;
1481         }
1482
1483         /* Device already exists in our database. */
1484         old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
1485         DEBUG2(printk("scsi%ld: %s DDB - old state= 0x%x, new state=0x%x for "
1486                       "index [%d]\n", ha->host_no, __func__,
1487                       ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
1488         if (old_fw_ddb_device_state == state &&
1489             state == DDB_DS_SESSION_ACTIVE) {
1490                 /* Do nothing, state not changed. */
1491                 return QLA_SUCCESS;
1492         }
1493
1494         ddb_entry->fw_ddb_device_state = state;
1495         /* Device is back online. */
1496         if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
1497                 atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
1498                 atomic_set(&ddb_entry->port_down_timer,
1499                            ha->port_down_retry_count);
1500                 atomic_set(&ddb_entry->relogin_retry_count, 0);
1501                 atomic_set(&ddb_entry->relogin_timer, 0);
1502                 clear_bit(DF_RELOGIN, &ddb_entry->flags);
1503                 clear_bit(DF_NO_RELOGIN, &ddb_entry->flags);
1504                 iscsi_unblock_session(ddb_entry->sess);
1505                 iscsi_session_event(ddb_entry->sess,
1506                                     ISCSI_KEVENT_CREATE_SESSION);
1507                 /*
1508                  * Change the lun state to READY in case the lun TIMEOUT before
1509                  * the device came back.
1510                  */
1511         } else {
1512                 /* Device went away, mark device missing */
1513                 if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE) {
1514                         DEBUG2(dev_info(&ha->pdev->dev, "%s mark missing "
1515                                         "ddb_entry 0x%p sess 0x%p conn 0x%p\n",
1516                                         __func__, ddb_entry,
1517                                         ddb_entry->sess, ddb_entry->conn));
1518                         qla4xxx_mark_device_missing(ha, ddb_entry);
1519                 }
1520
1521                 /*
1522                  * Relogin if device state changed to a not active state.
1523                  * However, do not relogin if a RELOGIN is in process, or
1524                  * we are not allowed to relogin to this DDB.
1525                  */
1526                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_FAILED &&
1527                     !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
1528                     !test_bit(DF_NO_RELOGIN, &ddb_entry->flags) &&
1529                     qla4_is_relogin_allowed(ha, conn_err)) {
1530                         /*
1531                          * This triggers a relogin.  After the relogin_timer
1532                          * expires, the relogin gets scheduled.  We must wait a
1533                          * minimum amount of time since receiving an 0x8014 AEN
1534                          * with failed device_state or a logout response before
1535                          * we can issue another relogin.
1536                          */
1537                         /* Firmware pads this timeout: (time2wait +1).
1538                          * Driver retry to login should be longer than F/W.
1539                          * Otherwise F/W will fail
1540                          * set_ddb() mbx cmd with 0x4005 since it still
1541                          * counting down its time2wait.
1542                          */
1543                         atomic_set(&ddb_entry->relogin_timer, 0);
1544                         atomic_set(&ddb_entry->retry_relogin_timer,
1545                                    ddb_entry->default_time2wait + 4);
1546                 }
1547         }
1548
1549         return QLA_SUCCESS;
1550 }
1551