drivers/scsi/qla4xxx/ql4_init.c

   1 /*
   2  * QLogic iSCSI HBA Driver
   3  * Copyright (c)  2003-2010 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 void ql4xxx_set_mac_number(struct scsi_qla_host *ha)
  15 {
  16         uint32_t value;
  17         uint8_t func_number;
  18         unsigned long flags;
  19
  20         /* Get the function number */
  21         spin_lock_irqsave(&ha->hardware_lock, flags);
  22         value = readw(&ha->reg->ctrl_status);
  23         spin_unlock_irqrestore(&ha->hardware_lock, flags);
  24
  25         func_number = (uint8_t) ((value >> 4) & 0x30);
  26         switch (value & ISP_CONTROL_FN_MASK) {
  27         case ISP_CONTROL_FN0_SCSI:
  28                 ha->mac_index = 1;
  29                 break;
  30         case ISP_CONTROL_FN1_SCSI:
  31                 ha->mac_index = 3;
  32                 break;
  33         default:
  34                 DEBUG2(printk("scsi%ld: %s: Invalid function number, "
  35                               "ispControlStatus = 0x%x\n", ha->host_no,
  36                               __func__, value));
  37                 break;
  38         }
  39         DEBUG2(printk("scsi%ld: %s: mac_index %d.\n", ha->host_no, __func__,
  40                       ha->mac_index));
  41 }
  42
  43 /**
  44  * qla4xxx_free_ddb - deallocate ddb
  45  * @ha: pointer to host adapter structure.
  46  * @ddb_entry: pointer to device database entry
  47  *
  48  * This routine marks a DDB entry INVALID
  49  **/
  50 void qla4xxx_free_ddb(struct scsi_qla_host *ha,
  51     struct ddb_entry *ddb_entry)
  52 {
  53         /* Remove device pointer from index mapping arrays */
  54         ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] =
  55                 (struct ddb_entry *) INVALID_ENTRY;
  56         ha->tot_ddbs--;
  57 }
  58
  59 /**
  60  * qla4xxx_init_response_q_entries() - Initializes response queue entries.
  61  * @ha: HA context
  62  *
  63  * Beginning of request ring has initialization control block already built
  64  * by nvram config routine.
  65  **/
  66 static void qla4xxx_init_response_q_entries(struct scsi_qla_host *ha)
  67 {
  68         uint16_t cnt;
  69         struct response *pkt;
  70
  71         pkt = (struct response *)ha->response_ptr;
  72         for (cnt = 0; cnt < RESPONSE_QUEUE_DEPTH; cnt++) {
  73                 pkt->signature = RESPONSE_PROCESSED;
  74                 pkt++;
  75         }
  76 }
  77
  78 /**
  79  * qla4xxx_init_rings - initialize hw queues
  80  * @ha: pointer to host adapter structure.
  81  *
  82  * This routine initializes the internal queues for the specified adapter.
  83  * The QLA4010 requires us to restart the queues at index 0.
  84  * The QLA4000 doesn't care, so just default to QLA4010's requirement.
  85  **/
  86 int qla4xxx_init_rings(struct scsi_qla_host *ha)
  87 {
  88         unsigned long flags = 0;
  89         int i;
  90
  91         /* Initialize request queue. */
  92         spin_lock_irqsave(&ha->hardware_lock, flags);
  93         ha->request_out = 0;
  94         ha->request_in = 0;
  95         ha->request_ptr = &ha->request_ring[ha->request_in];
  96         ha->req_q_count = REQUEST_QUEUE_DEPTH;
  97
  98         /* Initialize response queue. */
  99         ha->response_in = 0;
 100         ha->response_out = 0;
 101         ha->response_ptr = &ha->response_ring[ha->response_out];
 102
 103         if (is_qla8022(ha)) {
 104                 writel(0,
 105                     (unsigned long  __iomem *)&ha->qla4_8xxx_reg->req_q_out);
 106                 writel(0,
 107                     (unsigned long  __iomem *)&ha->qla4_8xxx_reg->rsp_q_in);
 108                 writel(0,
 109                     (unsigned long  __iomem *)&ha->qla4_8xxx_reg->rsp_q_out);
 110         } else {
 111                 /*
 112                  * Initialize DMA Shadow registers.  The firmware is really
 113                  * supposed to take care of this, but on some uniprocessor
 114                  * systems, the shadow registers aren't cleared-- causing
 115                  * the interrupt_handler to think there are responses to be
 116                  * 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
 127         qla4xxx_init_response_q_entries(ha);
 128
 129         /* Initialize mabilbox active array */
 130         for (i = 0; i < MAX_MRB; i++)
 131                 ha->active_mrb_array[i] = NULL;
 132
 133         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 134
 135         return QLA_SUCCESS;
 136 }
 137
 138 /**
 139  * qla4xxx_get_sys_info - validate adapter MAC address(es)
 140  * @ha: pointer to host adapter structure.
 141  *
 142  **/
 143 int qla4xxx_get_sys_info(struct scsi_qla_host *ha)
 144 {
 145         struct flash_sys_info *sys_info;
 146         dma_addr_t sys_info_dma;
 147         int status = QLA_ERROR;
 148
 149         sys_info = dma_alloc_coherent(&ha->pdev->dev, sizeof(*sys_info),
 150                                       &sys_info_dma, GFP_KERNEL);
 151         if (sys_info == NULL) {
 152                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
 153                               ha->host_no, __func__));
 154
 155                 goto exit_get_sys_info_no_free;
 156         }
 157         memset(sys_info, 0, sizeof(*sys_info));
 158
 159         /* Get flash sys info */
 160         if (qla4xxx_get_flash(ha, sys_info_dma, FLASH_OFFSET_SYS_INFO,
 161                               sizeof(*sys_info)) != QLA_SUCCESS) {
 162                 DEBUG2(printk("scsi%ld: %s: get_flash FLASH_OFFSET_SYS_INFO "
 163                               "failed\n", ha->host_no, __func__));
 164
 165                 goto exit_get_sys_info;
 166         }
 167
 168         /* Save M.A.C. address & serial_number */
 169         memcpy(ha->my_mac, &sys_info->physAddr[0].address[0],
 170                min(sizeof(ha->my_mac),
 171                    sizeof(sys_info->physAddr[0].address)));
 172         memcpy(ha->serial_number, &sys_info->acSerialNumber,
 173                min(sizeof(ha->serial_number),
 174                    sizeof(sys_info->acSerialNumber)));
 175
 176         status = QLA_SUCCESS;
 177
 178 exit_get_sys_info:
 179         dma_free_coherent(&ha->pdev->dev, sizeof(*sys_info), sys_info,
 180                           sys_info_dma);
 181
 182 exit_get_sys_info_no_free:
 183         return status;
 184 }
 185
 186 /**
 187  * qla4xxx_init_local_data - initialize adapter specific local data
 188  * @ha: pointer to host adapter structure.
 189  *
 190  **/
 191 static int qla4xxx_init_local_data(struct scsi_qla_host *ha)
 192 {
 193         /* Initialize aen queue */
 194         ha->aen_q_count = MAX_AEN_ENTRIES;
 195
 196         return qla4xxx_get_firmware_status(ha);
 197 }
 198
 199 static uint8_t
 200 qla4xxx_wait_for_ip_config(struct scsi_qla_host *ha)
 201 {
 202         uint8_t ipv4_wait = 0;
 203         uint8_t ipv6_wait = 0;
 204         int8_t ip_address[IPv6_ADDR_LEN] = {0} ;
 205
 206         /* If both IPv4 & IPv6 are enabled, possibly only one
 207          * IP address may be acquired, so check to see if we
 208          * need to wait for another */
 209         if (is_ipv4_enabled(ha) && is_ipv6_enabled(ha)) {
 210                 if (((ha->addl_fw_state & FW_ADDSTATE_DHCPv4_ENABLED) != 0) &&
 211                     ((ha->addl_fw_state &
 212                                     FW_ADDSTATE_DHCPv4_LEASE_ACQUIRED) == 0)) {
 213                         ipv4_wait = 1;
 214                 }
 215                 if (((ha->ip_config.ipv6_addl_options &
 216                       IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) != 0) &&
 217                     ((ha->ip_config.ipv6_link_local_state ==
 218                       IP_ADDRSTATE_ACQUIRING) ||
 219                      (ha->ip_config.ipv6_addr0_state ==
 220                       IP_ADDRSTATE_ACQUIRING) ||
 221                      (ha->ip_config.ipv6_addr1_state ==
 222                       IP_ADDRSTATE_ACQUIRING))) {
 223
 224                         ipv6_wait = 1;
 225
 226                         if ((ha->ip_config.ipv6_link_local_state ==
 227                              IP_ADDRSTATE_PREFERRED) ||
 228                             (ha->ip_config.ipv6_addr0_state ==
 229                              IP_ADDRSTATE_PREFERRED) ||
 230                             (ha->ip_config.ipv6_addr1_state ==
 231                              IP_ADDRSTATE_PREFERRED)) {
 232                                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
 233                                               "Preferred IP configured."
 234                                               " Don't wait!\n", ha->host_no,
 235                                               __func__));
 236                                 ipv6_wait = 0;
 237                         }
 238                         if (memcmp(&ha->ip_config.ipv6_default_router_addr,
 239                                    ip_address, IPv6_ADDR_LEN) == 0) {
 240                                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
 241                                               "No Router configured. "
 242                                               "Don't wait!\n", ha->host_no,
 243                                               __func__));
 244                                 ipv6_wait = 0;
 245                         }
 246                         if ((ha->ip_config.ipv6_default_router_state ==
 247                              IPV6_RTRSTATE_MANUAL) &&
 248                             (ha->ip_config.ipv6_link_local_state ==
 249                              IP_ADDRSTATE_TENTATIVE) &&
 250                             (memcmp(&ha->ip_config.ipv6_link_local_addr,
 251                              &ha->ip_config.ipv6_default_router_addr, 4) ==
 252                              0)) {
 253                                 DEBUG2(printk("scsi%ld: %s: LinkLocal Router & "
 254                                         "IP configured. Don't wait!\n",
 255                                         ha->host_no, __func__));
 256                                 ipv6_wait = 0;
 257                         }
 258                 }
 259                 if (ipv4_wait || ipv6_wait) {
 260                         DEBUG2(printk("scsi%ld: %s: Wait for additional "
 261                                       "IP(s) \"", ha->host_no, __func__));
 262                         if (ipv4_wait)
 263                                 DEBUG2(printk("IPv4 "));
 264                         if (ha->ip_config.ipv6_link_local_state ==
 265                             IP_ADDRSTATE_ACQUIRING)
 266                                 DEBUG2(printk("IPv6LinkLocal "));
 267                         if (ha->ip_config.ipv6_addr0_state ==
 268                             IP_ADDRSTATE_ACQUIRING)
 269                                 DEBUG2(printk("IPv6Addr0 "));
 270                         if (ha->ip_config.ipv6_addr1_state ==
 271                             IP_ADDRSTATE_ACQUIRING)
 272                                 DEBUG2(printk("IPv6Addr1 "));
 273                         DEBUG2(printk("\"\n"));
 274                 }
 275         }
 276
 277         return ipv4_wait|ipv6_wait;
 278 }
 279
 280 /**
 281  * qla4xxx_alloc_fw_dump - Allocate memory for minidump data.
 282  * @ha: pointer to host adapter structure.
 283  **/
 284 void qla4xxx_alloc_fw_dump(struct scsi_qla_host *ha)
 285 {
 286         int status;
 287         uint32_t capture_debug_level;
 288         int hdr_entry_bit, k;
 289         void *md_tmp;
 290         dma_addr_t md_tmp_dma;
 291         struct qla4_8xxx_minidump_template_hdr *md_hdr;
 292
 293         if (ha->fw_dump) {
 294                 ql4_printk(KERN_WARNING, ha,
 295                            "Firmware dump previously allocated.\n");
 296                 return;
 297         }
 298
 299         status = qla4xxx_req_template_size(ha);
 300         if (status != QLA_SUCCESS) {
 301                 ql4_printk(KERN_INFO, ha,
 302                            "scsi%ld: Failed to get template size\n",
 303                            ha->host_no);
 304                 return;
 305         }
 306
 307         clear_bit(AF_82XX_FW_DUMPED, &ha->flags);
 308
 309         /* Allocate memory for saving the template */
 310         md_tmp = dma_alloc_coherent(&ha->pdev->dev, ha->fw_dump_tmplt_size,
 311                                     &md_tmp_dma, GFP_KERNEL);
 312
 313         /* Request template */
 314         status =  qla4xxx_get_minidump_template(ha, md_tmp_dma);
 315         if (status != QLA_SUCCESS) {
 316                 ql4_printk(KERN_INFO, ha,
 317                            "scsi%ld: Failed to get minidump template\n",
 318                            ha->host_no);
 319                 goto alloc_cleanup;
 320         }
 321
 322         md_hdr = (struct qla4_8xxx_minidump_template_hdr *)md_tmp;
 323
 324         capture_debug_level = md_hdr->capture_debug_level;
 325
 326         /* Get capture mask based on module loadtime setting. */
 327         if (ql4xmdcapmask >= 0x3 && ql4xmdcapmask <= 0x7F)
 328                 ha->fw_dump_capture_mask = ql4xmdcapmask;
 329         else
 330                 ha->fw_dump_capture_mask = capture_debug_level;
 331
 332         md_hdr->driver_capture_mask = ha->fw_dump_capture_mask;
 333
 334         DEBUG2(ql4_printk(KERN_INFO, ha, "Minimum num of entries = %d\n",
 335                           md_hdr->num_of_entries));
 336         DEBUG2(ql4_printk(KERN_INFO, ha, "Dump template size  = %d\n",
 337                           ha->fw_dump_tmplt_size));
 338         DEBUG2(ql4_printk(KERN_INFO, ha, "Selected Capture mask =0x%x\n",
 339                           ha->fw_dump_capture_mask));
 340
 341         /* Calculate fw_dump_size */
 342         for (hdr_entry_bit = 0x2, k = 1; (hdr_entry_bit & 0xFF);
 343              hdr_entry_bit <<= 1, k++) {
 344                 if (hdr_entry_bit & ha->fw_dump_capture_mask)
 345                         ha->fw_dump_size += md_hdr->capture_size_array[k];
 346         }
 347
 348         /* Total firmware dump size including command header */
 349         ha->fw_dump_size += ha->fw_dump_tmplt_size;
 350         ha->fw_dump = vmalloc(ha->fw_dump_size);
 351         if (!ha->fw_dump)
 352                 goto alloc_cleanup;
 353
 354         DEBUG2(ql4_printk(KERN_INFO, ha,
 355                           "Minidump Tempalate Size = 0x%x KB\n",
 356                           ha->fw_dump_tmplt_size));
 357         DEBUG2(ql4_printk(KERN_INFO, ha,
 358                           "Total Minidump size = 0x%x KB\n", ha->fw_dump_size));
 359
 360         memcpy(ha->fw_dump, md_tmp, ha->fw_dump_tmplt_size);
 361         ha->fw_dump_tmplt_hdr = ha->fw_dump;
 362
 363 alloc_cleanup:
 364         dma_free_coherent(&ha->pdev->dev, ha->fw_dump_tmplt_size,
 365                           md_tmp, md_tmp_dma);
 366 }
 367
 368 static int qla4xxx_fw_ready(struct scsi_qla_host *ha)
 369 {
 370         uint32_t timeout_count;
 371         int ready = 0;
 372
 373         DEBUG2(ql4_printk(KERN_INFO, ha, "Waiting for Firmware Ready..\n"));
 374         for (timeout_count = ADAPTER_INIT_TOV; timeout_count > 0;
 375              timeout_count--) {
 376                 if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
 377                         qla4xxx_get_dhcp_ip_address(ha);
 378
 379                 /* Get firmware state. */
 380                 if (qla4xxx_get_firmware_state(ha) != QLA_SUCCESS) {
 381                         DEBUG2(printk("scsi%ld: %s: unable to get firmware "
 382                                       "state\n", ha->host_no, __func__));
 383                         break;
 384                 }
 385
 386                 if (ha->firmware_state & FW_STATE_ERROR) {
 387                         DEBUG2(printk("scsi%ld: %s: an unrecoverable error has"
 388                                       " occurred\n", ha->host_no, __func__));
 389                         break;
 390
 391                 }
 392                 if (ha->firmware_state & FW_STATE_CONFIG_WAIT) {
 393                         /*
 394                          * The firmware has not yet been issued an Initialize
 395                          * Firmware command, so issue it now.
 396                          */
 397                         if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR)
 398                                 break;
 399
 400                         /* Go back and test for ready state - no wait. */
 401                         continue;
 402                 }
 403
 404                 if (ha->firmware_state & FW_STATE_WAIT_AUTOCONNECT) {
 405                         DEBUG2(printk(KERN_INFO "scsi%ld: %s: fwstate:"
 406                                       "AUTOCONNECT in progress\n",
 407                                       ha->host_no, __func__));
 408                 }
 409
 410                 if (ha->firmware_state & FW_STATE_CONFIGURING_IP) {
 411                         DEBUG2(printk(KERN_INFO "scsi%ld: %s: fwstate:"
 412                                       " CONFIGURING IP\n",
 413                                       ha->host_no, __func__));
 414                         /*
 415                          * Check for link state after 15 secs and if link is
 416                          * still DOWN then, cable is unplugged. Ignore "DHCP
 417                          * in Progress/CONFIGURING IP" bit to check if firmware
 418                          * is in ready state or not after 15 secs.
 419                          * This is applicable for both 2.x & 3.x firmware
 420                          */
 421                         if (timeout_count <= (ADAPTER_INIT_TOV - 15)) {
 422                                 if (ha->addl_fw_state & FW_ADDSTATE_LINK_UP) {
 423                                         DEBUG2(printk(KERN_INFO "scsi%ld: %s:"
 424                                                   " LINK UP (Cable plugged)\n",
 425                                                   ha->host_no, __func__));
 426                                 } else if (ha->firmware_state &
 427                                           (FW_STATE_CONFIGURING_IP |
 428                                                              FW_STATE_READY)) {
 429                                         DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
 430                                                 "LINK DOWN (Cable unplugged)\n",
 431                                                 ha->host_no, __func__));
 432                                         ha->firmware_state = FW_STATE_READY;
 433                                 }
 434                         }
 435                 }
 436
 437                 if (ha->firmware_state == FW_STATE_READY) {
 438                         /* If DHCP IP Addr is available, retrieve it now. */
 439                         if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR,
 440                                                                 &ha->dpc_flags))
 441                                 qla4xxx_get_dhcp_ip_address(ha);
 442
 443                         if (!qla4xxx_wait_for_ip_config(ha) ||
 444                                                         timeout_count == 1) {
 445                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 446                                     "Firmware Ready..\n"));
 447                                 /* The firmware is ready to process SCSI
 448                                    commands. */
 449                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 450                                         "scsi%ld: %s: MEDIA TYPE"
 451                                         " - %s\n", ha->host_no,
 452                                         __func__, (ha->addl_fw_state &
 453                                         FW_ADDSTATE_OPTICAL_MEDIA)
 454                                         != 0 ? "OPTICAL" : "COPPER"));
 455                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 456                                         "scsi%ld: %s: DHCPv4 STATE"
 457                                         " Enabled %s\n", ha->host_no,
 458                                          __func__, (ha->addl_fw_state &
 459                                          FW_ADDSTATE_DHCPv4_ENABLED) != 0 ?
 460                                         "YES" : "NO"));
 461                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 462                                         "scsi%ld: %s: LINK %s\n",
 463                                         ha->host_no, __func__,
 464                                         (ha->addl_fw_state &
 465                                          FW_ADDSTATE_LINK_UP) != 0 ?
 466                                         "UP" : "DOWN"));
 467                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 468                                         "scsi%ld: %s: iSNS Service "
 469                                         "Started %s\n",
 470                                         ha->host_no, __func__,
 471                                         (ha->addl_fw_state &
 472                                          FW_ADDSTATE_ISNS_SVC_ENABLED) != 0 ?
 473                                         "YES" : "NO"));
 474
 475                                 ready = 1;
 476                                 break;
 477                         }
 478                 }
 479                 DEBUG2(printk("scsi%ld: %s: waiting on fw, state=%x:%x - "
 480                               "seconds expired= %d\n", ha->host_no, __func__,
 481                               ha->firmware_state, ha->addl_fw_state,
 482                               timeout_count));
 483                 if (is_qla4032(ha) &&
 484                         !(ha->addl_fw_state & FW_ADDSTATE_LINK_UP) &&
 485                         (timeout_count < ADAPTER_INIT_TOV - 5)) {
 486                         break;
 487                 }
 488
 489                 msleep(1000);
 490         }                       /* end of for */
 491
 492         if (timeout_count <= 0)
 493                 DEBUG2(printk("scsi%ld: %s: FW Initialization timed out!\n",
 494                               ha->host_no, __func__));
 495
 496         if (ha->firmware_state & FW_STATE_CONFIGURING_IP) {
 497                 DEBUG2(printk("scsi%ld: %s: FW initialized, but is reporting "
 498                               "it's waiting to configure an IP address\n",
 499                                ha->host_no, __func__));
 500                 ready = 1;
 501         } else if (ha->firmware_state & FW_STATE_WAIT_AUTOCONNECT) {
 502                 DEBUG2(printk("scsi%ld: %s: FW initialized, but "
 503                               "auto-discovery still in process\n",
 504                                ha->host_no, __func__));
 505                 ready = 1;
 506         }
 507
 508         return ready;
 509 }
 510
 511 /**
 512  * qla4xxx_init_firmware - initializes the firmware.
 513  * @ha: pointer to host adapter structure.
 514  *
 515  **/
 516 static int qla4xxx_init_firmware(struct scsi_qla_host *ha)
 517 {
 518         int status = QLA_ERROR;
 519
 520         if (is_aer_supported(ha) &&
 521             test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
 522                 return status;
 523
 524         /* For 82xx, stop firmware before initializing because if BIOS
 525          * has previously initialized firmware, then driver's initialize
 526          * firmware will fail. */
 527         if (is_qla8022(ha))
 528                 qla4_8xxx_stop_firmware(ha);
 529
 530         ql4_printk(KERN_INFO, ha, "Initializing firmware..\n");
 531         if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR) {
 532                 DEBUG2(printk("scsi%ld: %s: Failed to initialize firmware "
 533                               "control block\n", ha->host_no, __func__));
 534                 return status;
 535         }
 536
 537         if (!qla4xxx_fw_ready(ha))
 538                 return status;
 539
 540         if (is_qla8022(ha) && !test_bit(AF_INIT_DONE, &ha->flags))
 541                 qla4xxx_alloc_fw_dump(ha);
 542
 543         return qla4xxx_get_firmware_status(ha);
 544 }
 545
 546 static void qla4xxx_set_model_info(struct scsi_qla_host *ha)
 547 {
 548         uint16_t board_id_string[8];
 549         int i;
 550         int size = sizeof(ha->nvram->isp4022.boardIdStr);
 551         int offset = offsetof(struct eeprom_data, isp4022.boardIdStr) / 2;
 552
 553         for (i = 0; i < (size / 2) ; i++) {
 554                 board_id_string[i] = rd_nvram_word(ha, offset);
 555                 offset += 1;
 556         }
 557
 558         memcpy(ha->model_name, board_id_string, size);
 559 }
 560
 561 static int qla4xxx_config_nvram(struct scsi_qla_host *ha)
 562 {
 563         unsigned long flags;
 564         union external_hw_config_reg extHwConfig;
 565
 566         DEBUG2(printk("scsi%ld: %s: Get EEProm parameters \n", ha->host_no,
 567                       __func__));
 568         if (ql4xxx_lock_flash(ha) != QLA_SUCCESS)
 569                 return QLA_ERROR;
 570         if (ql4xxx_lock_nvram(ha) != QLA_SUCCESS) {
 571                 ql4xxx_unlock_flash(ha);
 572                 return QLA_ERROR;
 573         }
 574
 575         /* Get EEPRom Parameters from NVRAM and validate */
 576         ql4_printk(KERN_INFO, ha, "Configuring NVRAM ...\n");
 577         if (qla4xxx_is_nvram_configuration_valid(ha) == QLA_SUCCESS) {
 578                 spin_lock_irqsave(&ha->hardware_lock, flags);
 579                 extHwConfig.Asuint32_t =
 580                         rd_nvram_word(ha, eeprom_ext_hw_conf_offset(ha));
 581                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 582         } else {
 583                 ql4_printk(KERN_WARNING, ha,
 584                     "scsi%ld: %s: EEProm checksum invalid.  "
 585                     "Please update your EEPROM\n", ha->host_no,
 586                     __func__);
 587
 588                 /* Attempt to set defaults */
 589                 if (is_qla4010(ha))
 590                         extHwConfig.Asuint32_t = 0x1912;
 591                 else if (is_qla4022(ha) | is_qla4032(ha))
 592                         extHwConfig.Asuint32_t = 0x0023;
 593                 else
 594                         return QLA_ERROR;
 595         }
 596
 597         if (is_qla4022(ha) || is_qla4032(ha))
 598                 qla4xxx_set_model_info(ha);
 599         else
 600                 strcpy(ha->model_name, "QLA4010");
 601
 602         DEBUG(printk("scsi%ld: %s: Setting extHwConfig to 0xFFFF%04x\n",
 603                      ha->host_no, __func__, extHwConfig.Asuint32_t));
 604
 605         spin_lock_irqsave(&ha->hardware_lock, flags);
 606         writel((0xFFFF << 16) | extHwConfig.Asuint32_t, isp_ext_hw_conf(ha));
 607         readl(isp_ext_hw_conf(ha));
 608         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 609
 610         ql4xxx_unlock_nvram(ha);
 611         ql4xxx_unlock_flash(ha);
 612
 613         return QLA_SUCCESS;
 614 }
 615
 616 /**
 617  * qla4_8xxx_pci_config() - Setup ISP82xx PCI configuration registers.
 618  * @ha: HA context
 619  */
 620 void qla4_8xxx_pci_config(struct scsi_qla_host *ha)
 621 {
 622         pci_set_master(ha->pdev);
 623 }
 624
 625 void qla4xxx_pci_config(struct scsi_qla_host *ha)
 626 {
 627         uint16_t w;
 628         int status;
 629
 630         ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
 631
 632         pci_set_master(ha->pdev);
 633         status = pci_set_mwi(ha->pdev);
 634         /*
 635          * We want to respect framework's setting of PCI configuration space
 636          * command register and also want to make sure that all bits of
 637          * interest to us are properly set in command register.
 638          */
 639         pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
 640         w |= PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
 641         w &= ~PCI_COMMAND_INTX_DISABLE;
 642         pci_write_config_word(ha->pdev, PCI_COMMAND, w);
 643 }
 644
 645 static int qla4xxx_start_firmware_from_flash(struct scsi_qla_host *ha)
 646 {
 647         int status = QLA_ERROR;
 648         unsigned long max_wait_time;
 649         unsigned long flags;
 650         uint32_t mbox_status;
 651
 652         ql4_printk(KERN_INFO, ha, "Starting firmware ...\n");
 653
 654         /*
 655          * Start firmware from flash ROM
 656          *
 657          * WORKAROUND: Stuff a non-constant value that the firmware can
 658          * use as a seed for a random number generator in MB7 prior to
 659          * setting BOOT_ENABLE.  Fixes problem where the TCP
 660          * connections use the same TCP ports after each reboot,
 661          * causing some connections to not get re-established.
 662          */
 663         DEBUG(printk("scsi%d: %s: Start firmware from flash ROM\n",
 664                      ha->host_no, __func__));
 665
 666         spin_lock_irqsave(&ha->hardware_lock, flags);
 667         writel(jiffies, &ha->reg->mailbox[7]);
 668         if (is_qla4022(ha) | is_qla4032(ha))
 669                 writel(set_rmask(NVR_WRITE_ENABLE),
 670                        &ha->reg->u1.isp4022.nvram);
 671
 672         writel(2, &ha->reg->mailbox[6]);
 673         readl(&ha->reg->mailbox[6]);
 674
 675         writel(set_rmask(CSR_BOOT_ENABLE), &ha->reg->ctrl_status);
 676         readl(&ha->reg->ctrl_status);
 677         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 678
 679         /* Wait for firmware to come UP. */
 680         DEBUG2(printk(KERN_INFO "scsi%ld: %s: Wait up to %d seconds for "
 681                       "boot firmware to complete...\n",
 682                       ha->host_no, __func__, FIRMWARE_UP_TOV));
 683         max_wait_time = jiffies + (FIRMWARE_UP_TOV * HZ);
 684         do {
 685                 uint32_t ctrl_status;
 686
 687                 spin_lock_irqsave(&ha->hardware_lock, flags);
 688                 ctrl_status = readw(&ha->reg->ctrl_status);
 689                 mbox_status = readw(&ha->reg->mailbox[0]);
 690                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 691
 692                 if (ctrl_status & set_rmask(CSR_SCSI_PROCESSOR_INTR))
 693                         break;
 694                 if (mbox_status == MBOX_STS_COMMAND_COMPLETE)
 695                         break;
 696
 697                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: Waiting for boot "
 698                     "firmware to complete... ctrl_sts=0x%x, remaining=%ld\n",
 699                     ha->host_no, __func__, ctrl_status, max_wait_time));
 700
 701                 msleep_interruptible(250);
 702         } while (!time_after_eq(jiffies, max_wait_time));
 703
 704         if (mbox_status == MBOX_STS_COMMAND_COMPLETE) {
 705                 DEBUG(printk(KERN_INFO "scsi%ld: %s: Firmware has started\n",
 706                              ha->host_no, __func__));
 707
 708                 spin_lock_irqsave(&ha->hardware_lock, flags);
 709                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
 710                        &ha->reg->ctrl_status);
 711                 readl(&ha->reg->ctrl_status);
 712                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 713
 714                 status = QLA_SUCCESS;
 715         } else {
 716                 printk(KERN_INFO "scsi%ld: %s: Boot firmware failed "
 717                        "-  mbox status 0x%x\n", ha->host_no, __func__,
 718                        mbox_status);
 719                 status = QLA_ERROR;
 720         }
 721         return status;
 722 }
 723
 724 int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
 725 {
 726 #define QL4_LOCK_DRVR_WAIT      60
 727 #define QL4_LOCK_DRVR_SLEEP     1
 728
 729         int drvr_wait = QL4_LOCK_DRVR_WAIT;
 730         while (drvr_wait) {
 731                 if (ql4xxx_lock_drvr(a) == 0) {
 732                         ssleep(QL4_LOCK_DRVR_SLEEP);
 733                         if (drvr_wait) {
 734                                 DEBUG2(printk("scsi%ld: %s: Waiting for "
 735                                               "Global Init Semaphore(%d)...\n",
 736                                               a->host_no,
 737                                               __func__, drvr_wait));
 738                         }
 739                         drvr_wait -= QL4_LOCK_DRVR_SLEEP;
 740                 } else {
 741                         DEBUG2(printk("scsi%ld: %s: Global Init Semaphore "
 742                                       "acquired\n", a->host_no, __func__));
 743                         return QLA_SUCCESS;
 744                 }
 745         }
 746         return QLA_ERROR;
 747 }
 748
 749 /**
 750  * qla4xxx_start_firmware - starts qla4xxx firmware
 751  * @ha: Pointer to host adapter structure.
 752  *
 753  * This routine performs the necessary steps to start the firmware for
 754  * the QLA4010 adapter.
 755  **/
 756 int qla4xxx_start_firmware(struct scsi_qla_host *ha)
 757 {
 758         unsigned long flags = 0;
 759         uint32_t mbox_status;
 760         int status = QLA_ERROR;
 761         int soft_reset = 1;
 762         int config_chip = 0;
 763
 764         if (is_qla4022(ha) | is_qla4032(ha))
 765                 ql4xxx_set_mac_number(ha);
 766
 767         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
 768                 return QLA_ERROR;
 769
 770         spin_lock_irqsave(&ha->hardware_lock, flags);
 771
 772         DEBUG2(printk("scsi%ld: %s: port_ctrl   = 0x%08X\n", ha->host_no,
 773                       __func__, readw(isp_port_ctrl(ha))));
 774         DEBUG(printk("scsi%ld: %s: port_status = 0x%08X\n", ha->host_no,
 775                      __func__, readw(isp_port_status(ha))));
 776
 777         /* Is Hardware already initialized? */
 778         if ((readw(isp_port_ctrl(ha)) & 0x8000) != 0) {
 779                 DEBUG(printk("scsi%ld: %s: Hardware has already been "
 780                              "initialized\n", ha->host_no, __func__));
 781
 782                 /* Receive firmware boot acknowledgement */
 783                 mbox_status = readw(&ha->reg->mailbox[0]);
 784
 785                 DEBUG2(printk("scsi%ld: %s: H/W Config complete - mbox[0]= "
 786                               "0x%x\n", ha->host_no, __func__, mbox_status));
 787
 788                 /* Is firmware already booted? */
 789                 if (mbox_status == 0) {
 790                         /* F/W not running, must be config by net driver */
 791                         config_chip = 1;
 792                         soft_reset = 0;
 793                 } else {
 794                         writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
 795                                &ha->reg->ctrl_status);
 796                         readl(&ha->reg->ctrl_status);
 797                         writel(set_rmask(CSR_SCSI_COMPLETION_INTR),
 798                                &ha->reg->ctrl_status);
 799                         readl(&ha->reg->ctrl_status);
 800                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 801                         if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
 802                                 DEBUG2(printk("scsi%ld: %s: Get firmware "
 803                                               "state -- state = 0x%x\n",
 804                                               ha->host_no,
 805                                               __func__, ha->firmware_state));
 806                                 /* F/W is running */
 807                                 if (ha->firmware_state &
 808                                     FW_STATE_CONFIG_WAIT) {
 809                                         DEBUG2(printk("scsi%ld: %s: Firmware "
 810                                                       "in known state -- "
 811                                                       "config and "
 812                                                       "boot, state = 0x%x\n",
 813                                                       ha->host_no, __func__,
 814                                                       ha->firmware_state));
 815                                         config_chip = 1;
 816                                         soft_reset = 0;
 817                                 }
 818                         } else {
 819                                 DEBUG2(printk("scsi%ld: %s: Firmware in "
 820                                               "unknown state -- resetting,"
 821                                               " state = "
 822                                               "0x%x\n", ha->host_no, __func__,
 823                                               ha->firmware_state));
 824                         }
 825                         spin_lock_irqsave(&ha->hardware_lock, flags);
 826                 }
 827         } else {
 828                 DEBUG(printk("scsi%ld: %s: H/W initialization hasn't been "
 829                              "started - resetting\n", ha->host_no, __func__));
 830         }
 831         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 832
 833         DEBUG(printk("scsi%ld: %s: Flags soft_rest=%d, config= %d\n ",
 834                      ha->host_no, __func__, soft_reset, config_chip));
 835         if (soft_reset) {
 836                 DEBUG(printk("scsi%ld: %s: Issue Soft Reset\n", ha->host_no,
 837                              __func__));
 838                 status = qla4xxx_soft_reset(ha);        /* NOTE: acquires drvr
 839                                                          * lock again, but ok */
 840                 if (status == QLA_ERROR) {
 841                         DEBUG(printk("scsi%d: %s: Soft Reset failed!\n",
 842                                      ha->host_no, __func__));
 843                         ql4xxx_unlock_drvr(ha);
 844                         return QLA_ERROR;
 845                 }
 846                 config_chip = 1;
 847
 848                 /* Reset clears the semaphore, so acquire again */
 849                 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
 850                         return QLA_ERROR;
 851         }
 852
 853         if (config_chip) {
 854                 if ((status = qla4xxx_config_nvram(ha)) == QLA_SUCCESS)
 855                         status = qla4xxx_start_firmware_from_flash(ha);
 856         }
 857
 858         ql4xxx_unlock_drvr(ha);
 859         if (status == QLA_SUCCESS) {
 860                 if (test_and_clear_bit(AF_GET_CRASH_RECORD, &ha->flags))
 861                         qla4xxx_get_crash_record(ha);
 862         } else {
 863                 DEBUG(printk("scsi%ld: %s: Firmware has NOT started\n",
 864                              ha->host_no, __func__));
 865         }
 866         return status;
 867 }
 868 /**
 869  * qla4xxx_free_ddb_index - Free DDBs reserved by firmware
 870  * @ha: pointer to adapter structure
 871  *
 872  * Since firmware is not running in autoconnect mode the DDB indices should
 873  * be freed so that when login happens from user space there are free DDB
 874  * indices available.
 875  **/
 876 void qla4xxx_free_ddb_index(struct scsi_qla_host *ha)
 877 {
 878         int max_ddbs;
 879         int ret;
 880         uint32_t idx = 0, next_idx = 0;
 881         uint32_t state = 0, conn_err = 0;
 882
 883         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
 884                                      MAX_DEV_DB_ENTRIES;
 885
 886         for (idx = 0; idx < max_ddbs; idx = next_idx) {
 887                 ret = qla4xxx_get_fwddb_entry(ha, idx, NULL, 0, NULL,
 888                                               &next_idx, &state, &conn_err,
 889                                                 NULL, NULL);
 890                 if (ret == QLA_ERROR) {
 891                         next_idx++;
 892                         continue;
 893                 }
 894                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
 895                     state == DDB_DS_SESSION_FAILED) {
 896                         DEBUG2(ql4_printk(KERN_INFO, ha,
 897                                           "Freeing DDB index = 0x%x\n", idx));
 898                         ret = qla4xxx_clear_ddb_entry(ha, idx);
 899                         if (ret == QLA_ERROR)
 900                                 ql4_printk(KERN_ERR, ha,
 901                                            "Unable to clear DDB index = "
 902                                            "0x%x\n", idx);
 903                 }
 904                 if (next_idx == 0)
 905                         break;
 906         }
 907 }
 908
 909 /**
 910  * qla4xxx_initialize_adapter - initiailizes hba
 911  * @ha: Pointer to host adapter structure.
 912  *
 913  * This routine parforms all of the steps necessary to initialize the adapter.
 914  *
 915  **/
 916 int qla4xxx_initialize_adapter(struct scsi_qla_host *ha, int is_reset)
 917 {
 918         int status = QLA_ERROR;
 919
 920         ha->eeprom_cmd_data = 0;
 921
 922         ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
 923         ha->isp_ops->pci_config(ha);
 924
 925         ha->isp_ops->disable_intrs(ha);
 926
 927         /* Initialize the Host adapter request/response queues and firmware */
 928         if (ha->isp_ops->start_firmware(ha) == QLA_ERROR)
 929                 goto exit_init_hba;
 930
 931         if (qla4xxx_about_firmware(ha) == QLA_ERROR)
 932                 goto exit_init_hba;
 933
 934         if (ha->isp_ops->get_sys_info(ha) == QLA_ERROR)
 935                 goto exit_init_hba;
 936
 937         if (qla4xxx_init_local_data(ha) == QLA_ERROR)
 938                 goto exit_init_hba;
 939
 940         status = qla4xxx_init_firmware(ha);
 941         if (status == QLA_ERROR)
 942                 goto exit_init_hba;
 943
 944         if (is_reset == RESET_ADAPTER)
 945                 qla4xxx_build_ddb_list(ha, is_reset);
 946
 947         set_bit(AF_ONLINE, &ha->flags);
 948 exit_init_hba:
 949         if (is_qla8022(ha) && (status == QLA_ERROR)) {
 950                 /* Since interrupts are registered in start_firmware for
 951                  * 82xx, release them here if initialize_adapter fails */
 952                 qla4xxx_free_irqs(ha);
 953         }
 954
 955         DEBUG2(printk("scsi%ld: initialize adapter: %s\n", ha->host_no,
 956             status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
 957         return status;
 958 }
 959
 960 int qla4xxx_ddb_change(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
 961                        struct ddb_entry *ddb_entry, uint32_t state)
 962 {
 963         uint32_t old_fw_ddb_device_state;
 964         int status = QLA_ERROR;
 965
 966         old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
 967         DEBUG2(ql4_printk(KERN_INFO, ha,
 968                           "%s: DDB - old state = 0x%x, new state = 0x%x for "
 969                           "index [%d]\n", __func__,
 970                           ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
 971
 972         ddb_entry->fw_ddb_device_state = state;
 973
 974         switch (old_fw_ddb_device_state) {
 975         case DDB_DS_LOGIN_IN_PROCESS:
 976                 switch (state) {
 977                 case DDB_DS_SESSION_ACTIVE:
 978                 case DDB_DS_DISCOVERY:
 979                         qla4xxx_update_session_conn_param(ha, ddb_entry);
 980                         ddb_entry->unblock_sess(ddb_entry->sess);
 981                         status = QLA_SUCCESS;
 982                         break;
 983                 case DDB_DS_SESSION_FAILED:
 984                 case DDB_DS_NO_CONNECTION_ACTIVE:
 985                         iscsi_conn_login_event(ddb_entry->conn,
 986                                                ISCSI_CONN_STATE_FREE);
 987                         status = QLA_SUCCESS;
 988                         break;
 989                 }
 990                 break;
 991         case DDB_DS_SESSION_ACTIVE:
 992         case DDB_DS_DISCOVERY:
 993                 switch (state) {
 994                 case DDB_DS_SESSION_FAILED:
 995                         /*
 996                          * iscsi_session failure  will cause userspace to
 997                          * stop the connection which in turn would block the
 998                          * iscsi_session and start relogin
 999                          */
1000                         iscsi_session_failure(ddb_entry->sess->dd_data,
1001                                               ISCSI_ERR_CONN_FAILED);
1002                         status = QLA_SUCCESS;
1003                         break;
1004                 case DDB_DS_NO_CONNECTION_ACTIVE:
1005                         clear_bit(fw_ddb_index, ha->ddb_idx_map);
1006                         status = QLA_SUCCESS;
1007                         break;
1008                 }
1009                 break;
1010         case DDB_DS_SESSION_FAILED:
1011                 switch (state) {
1012                 case DDB_DS_SESSION_ACTIVE:
1013                 case DDB_DS_DISCOVERY:
1014                         ddb_entry->unblock_sess(ddb_entry->sess);
1015                         qla4xxx_update_session_conn_param(ha, ddb_entry);
1016                         status = QLA_SUCCESS;
1017                         break;
1018                 case DDB_DS_SESSION_FAILED:
1019                         iscsi_session_failure(ddb_entry->sess->dd_data,
1020                                               ISCSI_ERR_CONN_FAILED);
1021                         status = QLA_SUCCESS;
1022                         break;
1023                 }
1024                 break;
1025         default:
1026                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unknown Event\n",
1027                                 __func__));
1028                 break;
1029         }
1030         return status;
1031 }
1032
1033 void qla4xxx_arm_relogin_timer(struct ddb_entry *ddb_entry)
1034 {
1035         /*
1036          * This triggers a relogin.  After the relogin_timer
1037          * expires, the relogin gets scheduled.  We must wait a
1038          * minimum amount of time since receiving an 0x8014 AEN
1039          * with failed device_state or a logout response before
1040          * we can issue another relogin.
1041          *
1042          * Firmware pads this timeout: (time2wait +1).
1043          * Driver retry to login should be longer than F/W.
1044          * Otherwise F/W will fail
1045          * set_ddb() mbx cmd with 0x4005 since it still
1046          * counting down its time2wait.
1047          */
1048         atomic_set(&ddb_entry->relogin_timer, 0);
1049         atomic_set(&ddb_entry->retry_relogin_timer,
1050                    ddb_entry->default_time2wait + 4);
1051
1052 }
1053
1054 int qla4xxx_flash_ddb_change(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
1055                              struct ddb_entry *ddb_entry, uint32_t state)
1056 {
1057         uint32_t old_fw_ddb_device_state;
1058         int status = QLA_ERROR;
1059
1060         old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
1061         DEBUG2(ql4_printk(KERN_INFO, ha,
1062                           "%s: DDB - old state = 0x%x, new state = 0x%x for "
1063                           "index [%d]\n", __func__,
1064                           ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
1065
1066         ddb_entry->fw_ddb_device_state = state;
1067
1068         switch (old_fw_ddb_device_state) {
1069         case DDB_DS_LOGIN_IN_PROCESS:
1070         case DDB_DS_NO_CONNECTION_ACTIVE:
1071                 switch (state) {
1072                 case DDB_DS_SESSION_ACTIVE:
1073                         ddb_entry->unblock_sess(ddb_entry->sess);
1074                         qla4xxx_update_session_conn_fwddb_param(ha, ddb_entry);
1075                         status = QLA_SUCCESS;
1076                         break;
1077                 case DDB_DS_SESSION_FAILED:
1078                         iscsi_block_session(ddb_entry->sess);
1079                         if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
1080                                 qla4xxx_arm_relogin_timer(ddb_entry);
1081                         status = QLA_SUCCESS;
1082                         break;
1083                 }
1084                 break;
1085         case DDB_DS_SESSION_ACTIVE:
1086                 switch (state) {
1087                 case DDB_DS_SESSION_FAILED:
1088                         iscsi_block_session(ddb_entry->sess);
1089                         if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
1090                                 qla4xxx_arm_relogin_timer(ddb_entry);
1091                         status = QLA_SUCCESS;
1092                         break;
1093                 }
1094                 break;
1095         case DDB_DS_SESSION_FAILED:
1096                 switch (state) {
1097                 case DDB_DS_SESSION_ACTIVE:
1098                         ddb_entry->unblock_sess(ddb_entry->sess);
1099                         qla4xxx_update_session_conn_fwddb_param(ha, ddb_entry);
1100                         status = QLA_SUCCESS;
1101                         break;
1102                 case DDB_DS_SESSION_FAILED:
1103                         if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
1104                                 qla4xxx_arm_relogin_timer(ddb_entry);
1105                         status = QLA_SUCCESS;
1106                         break;
1107                 }
1108                 break;
1109         default:
1110                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unknown Event\n",
1111                                   __func__));
1112                 break;
1113         }
1114         return status;
1115 }
1116
1117 /**
1118  * qla4xxx_process_ddb_changed - process ddb state change
1119  * @ha - Pointer to host adapter structure.
1120  * @fw_ddb_index - Firmware's device database index
1121  * @state - Device state
1122  *
1123  * This routine processes a Decive Database Changed AEN Event.
1124  **/
1125 int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha,
1126                                 uint32_t fw_ddb_index,
1127                                 uint32_t state, uint32_t conn_err)
1128 {
1129         struct ddb_entry *ddb_entry;
1130         int status = QLA_ERROR;
1131
1132         /* check for out of range index */
1133         if (fw_ddb_index >= MAX_DDB_ENTRIES)
1134                 goto exit_ddb_event;
1135
1136         /* Get the corresponging ddb entry */
1137         ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
1138         /* Device does not currently exist in our database. */
1139         if (ddb_entry == NULL) {
1140                 ql4_printk(KERN_ERR, ha, "%s: No ddb_entry at FW index [%d]\n",
1141                            __func__, fw_ddb_index);
1142
1143                 if (state == DDB_DS_NO_CONNECTION_ACTIVE)
1144                         clear_bit(fw_ddb_index, ha->ddb_idx_map);
1145
1146                 goto exit_ddb_event;
1147         }
1148
1149         ddb_entry->ddb_change(ha, fw_ddb_index, ddb_entry, state);
1150
1151 exit_ddb_event:
1152         return status;
1153 }
1154
1155 /**
1156  * qla4xxx_login_flash_ddb - Login to target (DDB)
1157  * @cls_session: Pointer to the session to login
1158  *
1159  * This routine logins to the target.
1160  * Issues setddb and conn open mbx
1161  **/
1162 void qla4xxx_login_flash_ddb(struct iscsi_cls_session *cls_session)
1163 {
1164         struct iscsi_session *sess;
1165         struct ddb_entry *ddb_entry;
1166         struct scsi_qla_host *ha;
1167         struct dev_db_entry *fw_ddb_entry = NULL;
1168         dma_addr_t fw_ddb_dma;
1169         uint32_t mbx_sts = 0;
1170         int ret;
1171
1172         sess = cls_session->dd_data;
1173         ddb_entry = sess->dd_data;
1174         ha =  ddb_entry->ha;
1175
1176         if (!test_bit(AF_LINK_UP, &ha->flags))
1177                 return;
1178
1179         if (ddb_entry->ddb_type != FLASH_DDB) {
1180                 DEBUG2(ql4_printk(KERN_INFO, ha,
1181                                   "Skipping login to non FLASH DB"));
1182                 goto exit_login;
1183         }
1184
1185         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
1186                                       &fw_ddb_dma);
1187         if (fw_ddb_entry == NULL) {
1188                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
1189                 goto exit_login;
1190         }
1191
1192         if (ddb_entry->fw_ddb_index == INVALID_ENTRY) {
1193                 ret = qla4xxx_get_ddb_index(ha, &ddb_entry->fw_ddb_index);
1194                 if (ret == QLA_ERROR)
1195                         goto exit_login;
1196
1197                 ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
1198                 ha->tot_ddbs++;
1199         }
1200
1201         memcpy(fw_ddb_entry, &ddb_entry->fw_ddb_entry,
1202                sizeof(struct dev_db_entry));
1203         ddb_entry->sess->target_id = ddb_entry->fw_ddb_index;
1204
1205         ret = qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index,
1206                                     fw_ddb_dma, &mbx_sts);
1207         if (ret == QLA_ERROR) {
1208                 DEBUG2(ql4_printk(KERN_ERR, ha, "Set DDB failed\n"));
1209                 goto exit_login;
1210         }
1211
1212         ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
1213         ret = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
1214         if (ret == QLA_ERROR) {
1215                 ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
1216                            sess->targetname);
1217                 goto exit_login;
1218         }
1219
1220 exit_login:
1221         if (fw_ddb_entry)
1222                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
1223 }
1224