kernel/drivers/scsi/qla4xxx/ql4_init.c

   1 /*
   2  * QLogic iSCSI HBA Driver
   3  * Copyright (c)  2003-2013 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_82xx_reg->req_q_out);
 106                 writel(0,
 107                     (unsigned long  __iomem *)&ha->qla4_82xx_reg->rsp_q_in);
 108                 writel(0,
 109                     (unsigned long  __iomem *)&ha->qla4_82xx_reg->rsp_q_out);
 110         } else if (is_qla8032(ha) || is_qla8042(ha)) {
 111                 writel(0,
 112                        (unsigned long __iomem *)&ha->qla4_83xx_reg->req_q_in);
 113                 writel(0,
 114                        (unsigned long __iomem *)&ha->qla4_83xx_reg->rsp_q_in);
 115                 writel(0,
 116                        (unsigned long __iomem *)&ha->qla4_83xx_reg->rsp_q_out);
 117         } else {
 118                 /*
 119                  * Initialize DMA Shadow registers.  The firmware is really
 120                  * supposed to take care of this, but on some uniprocessor
 121                  * systems, the shadow registers aren't cleared-- causing
 122                  * the interrupt_handler to think there are responses to be
 123                  * processed when there aren't.
 124                  */
 125                 ha->shadow_regs->req_q_out = __constant_cpu_to_le32(0);
 126                 ha->shadow_regs->rsp_q_in = __constant_cpu_to_le32(0);
 127                 wmb();
 128
 129                 writel(0, &ha->reg->req_q_in);
 130                 writel(0, &ha->reg->rsp_q_out);
 131                 readl(&ha->reg->rsp_q_out);
 132         }
 133
 134         qla4xxx_init_response_q_entries(ha);
 135
 136         /* Initialize mailbox active array */
 137         for (i = 0; i < MAX_MRB; i++)
 138                 ha->active_mrb_array[i] = NULL;
 139
 140         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 141
 142         return QLA_SUCCESS;
 143 }
 144
 145 /**
 146  * qla4xxx_get_sys_info - validate adapter MAC address(es)
 147  * @ha: pointer to host adapter structure.
 148  *
 149  **/
 150 int qla4xxx_get_sys_info(struct scsi_qla_host *ha)
 151 {
 152         struct flash_sys_info *sys_info;
 153         dma_addr_t sys_info_dma;
 154         int status = QLA_ERROR;
 155
 156         sys_info = dma_alloc_coherent(&ha->pdev->dev, sizeof(*sys_info),
 157                                       &sys_info_dma, GFP_KERNEL);
 158         if (sys_info == NULL) {
 159                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
 160                               ha->host_no, __func__));
 161
 162                 goto exit_get_sys_info_no_free;
 163         }
 164         memset(sys_info, 0, sizeof(*sys_info));
 165
 166         /* Get flash sys info */
 167         if (qla4xxx_get_flash(ha, sys_info_dma, FLASH_OFFSET_SYS_INFO,
 168                               sizeof(*sys_info)) != QLA_SUCCESS) {
 169                 DEBUG2(printk("scsi%ld: %s: get_flash FLASH_OFFSET_SYS_INFO "
 170                               "failed\n", ha->host_no, __func__));
 171
 172                 goto exit_get_sys_info;
 173         }
 174
 175         /* Save M.A.C. address & serial_number */
 176         memcpy(ha->my_mac, &sys_info->physAddr[0].address[0],
 177                min(sizeof(ha->my_mac),
 178                    sizeof(sys_info->physAddr[0].address)));
 179         memcpy(ha->serial_number, &sys_info->acSerialNumber,
 180                min(sizeof(ha->serial_number),
 181                    sizeof(sys_info->acSerialNumber)));
 182
 183         status = QLA_SUCCESS;
 184
 185 exit_get_sys_info:
 186         dma_free_coherent(&ha->pdev->dev, sizeof(*sys_info), sys_info,
 187                           sys_info_dma);
 188
 189 exit_get_sys_info_no_free:
 190         return status;
 191 }
 192
 193 /**
 194  * qla4xxx_init_local_data - initialize adapter specific local data
 195  * @ha: pointer to host adapter structure.
 196  *
 197  **/
 198 static void qla4xxx_init_local_data(struct scsi_qla_host *ha)
 199 {
 200         /* Initialize aen queue */
 201         ha->aen_q_count = MAX_AEN_ENTRIES;
 202 }
 203
 204 static uint8_t
 205 qla4xxx_wait_for_ip_config(struct scsi_qla_host *ha)
 206 {
 207         uint8_t ipv4_wait = 0;
 208         uint8_t ipv6_wait = 0;
 209         int8_t ip_address[IPv6_ADDR_LEN] = {0} ;
 210
 211         /* If both IPv4 & IPv6 are enabled, possibly only one
 212          * IP address may be acquired, so check to see if we
 213          * need to wait for another */
 214         if (is_ipv4_enabled(ha) && is_ipv6_enabled(ha)) {
 215                 if (((ha->addl_fw_state & FW_ADDSTATE_DHCPv4_ENABLED) != 0) &&
 216                     ((ha->addl_fw_state &
 217                                     FW_ADDSTATE_DHCPv4_LEASE_ACQUIRED) == 0)) {
 218                         ipv4_wait = 1;
 219                 }
 220                 if (((ha->ip_config.ipv6_addl_options &
 221                       IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) != 0) &&
 222                     ((ha->ip_config.ipv6_link_local_state ==
 223                       IP_ADDRSTATE_ACQUIRING) ||
 224                      (ha->ip_config.ipv6_addr0_state ==
 225                       IP_ADDRSTATE_ACQUIRING) ||
 226                      (ha->ip_config.ipv6_addr1_state ==
 227                       IP_ADDRSTATE_ACQUIRING))) {
 228
 229                         ipv6_wait = 1;
 230
 231                         if ((ha->ip_config.ipv6_link_local_state ==
 232                              IP_ADDRSTATE_PREFERRED) ||
 233                             (ha->ip_config.ipv6_addr0_state ==
 234                              IP_ADDRSTATE_PREFERRED) ||
 235                             (ha->ip_config.ipv6_addr1_state ==
 236                              IP_ADDRSTATE_PREFERRED)) {
 237                                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
 238                                               "Preferred IP configured."
 239                                               " Don't wait!\n", ha->host_no,
 240                                               __func__));
 241                                 ipv6_wait = 0;
 242                         }
 243                         if (memcmp(&ha->ip_config.ipv6_default_router_addr,
 244                                    ip_address, IPv6_ADDR_LEN) == 0) {
 245                                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
 246                                               "No Router configured. "
 247                                               "Don't wait!\n", ha->host_no,
 248                                               __func__));
 249                                 ipv6_wait = 0;
 250                         }
 251                         if ((ha->ip_config.ipv6_default_router_state ==
 252                              IPV6_RTRSTATE_MANUAL) &&
 253                             (ha->ip_config.ipv6_link_local_state ==
 254                              IP_ADDRSTATE_TENTATIVE) &&
 255                             (memcmp(&ha->ip_config.ipv6_link_local_addr,
 256                              &ha->ip_config.ipv6_default_router_addr, 4) ==
 257                              0)) {
 258                                 DEBUG2(printk("scsi%ld: %s: LinkLocal Router & "
 259                                         "IP configured. Don't wait!\n",
 260                                         ha->host_no, __func__));
 261                                 ipv6_wait = 0;
 262                         }
 263                 }
 264                 if (ipv4_wait || ipv6_wait) {
 265                         DEBUG2(printk("scsi%ld: %s: Wait for additional "
 266                                       "IP(s) \"", ha->host_no, __func__));
 267                         if (ipv4_wait)
 268                                 DEBUG2(printk("IPv4 "));
 269                         if (ha->ip_config.ipv6_link_local_state ==
 270                             IP_ADDRSTATE_ACQUIRING)
 271                                 DEBUG2(printk("IPv6LinkLocal "));
 272                         if (ha->ip_config.ipv6_addr0_state ==
 273                             IP_ADDRSTATE_ACQUIRING)
 274                                 DEBUG2(printk("IPv6Addr0 "));
 275                         if (ha->ip_config.ipv6_addr1_state ==
 276                             IP_ADDRSTATE_ACQUIRING)
 277                                 DEBUG2(printk("IPv6Addr1 "));
 278                         DEBUG2(printk("\"\n"));
 279                 }
 280         }
 281
 282         return ipv4_wait|ipv6_wait;
 283 }
 284
 285 static int qla4_80xx_is_minidump_dma_capable(struct scsi_qla_host *ha,
 286                 struct qla4_8xxx_minidump_template_hdr *md_hdr)
 287 {
 288         int offset = (is_qla8022(ha)) ? QLA8022_TEMPLATE_CAP_OFFSET :
 289                                         QLA83XX_TEMPLATE_CAP_OFFSET;
 290         int rval = 1;
 291         uint32_t *cap_offset;
 292
 293         cap_offset = (uint32_t *)((char *)md_hdr + offset);
 294
 295         if (!(le32_to_cpu(*cap_offset) & BIT_0)) {
 296                 ql4_printk(KERN_INFO, ha, "PEX DMA Not supported %d\n",
 297                            *cap_offset);
 298                 rval = 0;
 299         }
 300
 301         return rval;
 302 }
 303
 304 /**
 305  * qla4xxx_alloc_fw_dump - Allocate memory for minidump data.
 306  * @ha: pointer to host adapter structure.
 307  **/
 308 void qla4xxx_alloc_fw_dump(struct scsi_qla_host *ha)
 309 {
 310         int status;
 311         uint32_t capture_debug_level;
 312         int hdr_entry_bit, k;
 313         void *md_tmp;
 314         dma_addr_t md_tmp_dma;
 315         struct qla4_8xxx_minidump_template_hdr *md_hdr;
 316         int dma_capable;
 317
 318         if (ha->fw_dump) {
 319                 ql4_printk(KERN_WARNING, ha,
 320                            "Firmware dump previously allocated.\n");
 321                 return;
 322         }
 323
 324         status = qla4xxx_req_template_size(ha);
 325         if (status != QLA_SUCCESS) {
 326                 ql4_printk(KERN_INFO, ha,
 327                            "scsi%ld: Failed to get template size\n",
 328                            ha->host_no);
 329                 return;
 330         }
 331
 332         clear_bit(AF_82XX_FW_DUMPED, &ha->flags);
 333
 334         /* Allocate memory for saving the template */
 335         md_tmp = dma_alloc_coherent(&ha->pdev->dev, ha->fw_dump_tmplt_size,
 336                                     &md_tmp_dma, GFP_KERNEL);
 337         if (!md_tmp) {
 338                 ql4_printk(KERN_INFO, ha,
 339                            "scsi%ld: Failed to allocate DMA memory\n",
 340                            ha->host_no);
 341                 return;
 342         }
 343
 344         /* Request template */
 345         status =  qla4xxx_get_minidump_template(ha, md_tmp_dma);
 346         if (status != QLA_SUCCESS) {
 347                 ql4_printk(KERN_INFO, ha,
 348                            "scsi%ld: Failed to get minidump template\n",
 349                            ha->host_no);
 350                 goto alloc_cleanup;
 351         }
 352
 353         md_hdr = (struct qla4_8xxx_minidump_template_hdr *)md_tmp;
 354
 355         dma_capable = qla4_80xx_is_minidump_dma_capable(ha, md_hdr);
 356
 357         capture_debug_level = md_hdr->capture_debug_level;
 358
 359         /* Get capture mask based on module loadtime setting. */
 360         if ((ql4xmdcapmask >= 0x3 && ql4xmdcapmask <= 0x7F) ||
 361             (ql4xmdcapmask == 0xFF && dma_capable))  {
 362                 ha->fw_dump_capture_mask = ql4xmdcapmask;
 363         } else {
 364                 if (ql4xmdcapmask == 0xFF)
 365                         ql4_printk(KERN_INFO, ha, "Falling back to default capture mask, as PEX DMA is not supported\n");
 366                 ha->fw_dump_capture_mask = capture_debug_level;
 367         }
 368
 369         md_hdr->driver_capture_mask = ha->fw_dump_capture_mask;
 370
 371         DEBUG2(ql4_printk(KERN_INFO, ha, "Minimum num of entries = %d\n",
 372                           md_hdr->num_of_entries));
 373         DEBUG2(ql4_printk(KERN_INFO, ha, "Dump template size  = %d\n",
 374                           ha->fw_dump_tmplt_size));
 375         DEBUG2(ql4_printk(KERN_INFO, ha, "Selected Capture mask =0x%x\n",
 376                           ha->fw_dump_capture_mask));
 377
 378         /* Calculate fw_dump_size */
 379         for (hdr_entry_bit = 0x2, k = 1; (hdr_entry_bit & 0xFF);
 380              hdr_entry_bit <<= 1, k++) {
 381                 if (hdr_entry_bit & ha->fw_dump_capture_mask)
 382                         ha->fw_dump_size += md_hdr->capture_size_array[k];
 383         }
 384
 385         /* Total firmware dump size including command header */
 386         ha->fw_dump_size += ha->fw_dump_tmplt_size;
 387         ha->fw_dump = vmalloc(ha->fw_dump_size);
 388         if (!ha->fw_dump)
 389                 goto alloc_cleanup;
 390
 391         DEBUG2(ql4_printk(KERN_INFO, ha,
 392                           "Minidump Tempalate Size = 0x%x KB\n",
 393                           ha->fw_dump_tmplt_size));
 394         DEBUG2(ql4_printk(KERN_INFO, ha,
 395                           "Total Minidump size = 0x%x KB\n", ha->fw_dump_size));
 396
 397         memcpy(ha->fw_dump, md_tmp, ha->fw_dump_tmplt_size);
 398         ha->fw_dump_tmplt_hdr = ha->fw_dump;
 399
 400 alloc_cleanup:
 401         dma_free_coherent(&ha->pdev->dev, ha->fw_dump_tmplt_size,
 402                           md_tmp, md_tmp_dma);
 403 }
 404
 405 static int qla4xxx_fw_ready(struct scsi_qla_host *ha)
 406 {
 407         uint32_t timeout_count;
 408         int ready = 0;
 409
 410         DEBUG2(ql4_printk(KERN_INFO, ha, "Waiting for Firmware Ready..\n"));
 411         for (timeout_count = ADAPTER_INIT_TOV; timeout_count > 0;
 412              timeout_count--) {
 413                 if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
 414                         qla4xxx_get_dhcp_ip_address(ha);
 415
 416                 /* Get firmware state. */
 417                 if (qla4xxx_get_firmware_state(ha) != QLA_SUCCESS) {
 418                         DEBUG2(printk("scsi%ld: %s: unable to get firmware "
 419                                       "state\n", ha->host_no, __func__));
 420                         break;
 421                 }
 422
 423                 if (ha->firmware_state & FW_STATE_ERROR) {
 424                         DEBUG2(printk("scsi%ld: %s: an unrecoverable error has"
 425                                       " occurred\n", ha->host_no, __func__));
 426                         break;
 427
 428                 }
 429                 if (ha->firmware_state & FW_STATE_CONFIG_WAIT) {
 430                         /*
 431                          * The firmware has not yet been issued an Initialize
 432                          * Firmware command, so issue it now.
 433                          */
 434                         if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR)
 435                                 break;
 436
 437                         /* Go back and test for ready state - no wait. */
 438                         continue;
 439                 }
 440
 441                 if (ha->firmware_state & FW_STATE_WAIT_AUTOCONNECT) {
 442                         DEBUG2(printk(KERN_INFO "scsi%ld: %s: fwstate:"
 443                                       "AUTOCONNECT in progress\n",
 444                                       ha->host_no, __func__));
 445                 }
 446
 447                 if (ha->firmware_state & FW_STATE_CONFIGURING_IP) {
 448                         DEBUG2(printk(KERN_INFO "scsi%ld: %s: fwstate:"
 449                                       " CONFIGURING IP\n",
 450                                       ha->host_no, __func__));
 451                         /*
 452                          * Check for link state after 15 secs and if link is
 453                          * still DOWN then, cable is unplugged. Ignore "DHCP
 454                          * in Progress/CONFIGURING IP" bit to check if firmware
 455                          * is in ready state or not after 15 secs.
 456                          * This is applicable for both 2.x & 3.x firmware
 457                          */
 458                         if (timeout_count <= (ADAPTER_INIT_TOV - 15)) {
 459                                 if (ha->addl_fw_state & FW_ADDSTATE_LINK_UP) {
 460                                         DEBUG2(printk(KERN_INFO "scsi%ld: %s:"
 461                                                   " LINK UP (Cable plugged)\n",
 462                                                   ha->host_no, __func__));
 463                                 } else if (ha->firmware_state &
 464                                           (FW_STATE_CONFIGURING_IP |
 465                                                              FW_STATE_READY)) {
 466                                         DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
 467                                                 "LINK DOWN (Cable unplugged)\n",
 468                                                 ha->host_no, __func__));
 469                                         ha->firmware_state = FW_STATE_READY;
 470                                 }
 471                         }
 472                 }
 473
 474                 if (ha->firmware_state == FW_STATE_READY) {
 475                         /* If DHCP IP Addr is available, retrieve it now. */
 476                         if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR,
 477                                                                 &ha->dpc_flags))
 478                                 qla4xxx_get_dhcp_ip_address(ha);
 479
 480                         if (!qla4xxx_wait_for_ip_config(ha) ||
 481                                                         timeout_count == 1) {
 482                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 483                                     "Firmware Ready..\n"));
 484                                 /* The firmware is ready to process SCSI
 485                                    commands. */
 486                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 487                                         "scsi%ld: %s: MEDIA TYPE"
 488                                         " - %s\n", ha->host_no,
 489                                         __func__, (ha->addl_fw_state &
 490                                         FW_ADDSTATE_OPTICAL_MEDIA)
 491                                         != 0 ? "OPTICAL" : "COPPER"));
 492                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 493                                         "scsi%ld: %s: DHCPv4 STATE"
 494                                         " Enabled %s\n", ha->host_no,
 495                                          __func__, (ha->addl_fw_state &
 496                                          FW_ADDSTATE_DHCPv4_ENABLED) != 0 ?
 497                                         "YES" : "NO"));
 498                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 499                                         "scsi%ld: %s: LINK %s\n",
 500                                         ha->host_no, __func__,
 501                                         (ha->addl_fw_state &
 502                                          FW_ADDSTATE_LINK_UP) != 0 ?
 503                                         "UP" : "DOWN"));
 504                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 505                                         "scsi%ld: %s: iSNS Service "
 506                                         "Started %s\n",
 507                                         ha->host_no, __func__,
 508                                         (ha->addl_fw_state &
 509                                          FW_ADDSTATE_ISNS_SVC_ENABLED) != 0 ?
 510                                         "YES" : "NO"));
 511
 512                                 ready = 1;
 513                                 break;
 514                         }
 515                 }
 516                 DEBUG2(printk("scsi%ld: %s: waiting on fw, state=%x:%x - "
 517                               "seconds expired= %d\n", ha->host_no, __func__,
 518                               ha->firmware_state, ha->addl_fw_state,
 519                               timeout_count));
 520                 if (is_qla4032(ha) &&
 521                         !(ha->addl_fw_state & FW_ADDSTATE_LINK_UP) &&
 522                         (timeout_count < ADAPTER_INIT_TOV - 5)) {
 523                         break;
 524                 }
 525
 526                 msleep(1000);
 527         }                       /* end of for */
 528
 529         if (timeout_count <= 0)
 530                 DEBUG2(printk("scsi%ld: %s: FW Initialization timed out!\n",
 531                               ha->host_no, __func__));
 532
 533         if (ha->firmware_state & FW_STATE_CONFIGURING_IP) {
 534                 DEBUG2(printk("scsi%ld: %s: FW initialized, but is reporting "
 535                               "it's waiting to configure an IP address\n",
 536                                ha->host_no, __func__));
 537                 ready = 1;
 538         } else if (ha->firmware_state & FW_STATE_WAIT_AUTOCONNECT) {
 539                 DEBUG2(printk("scsi%ld: %s: FW initialized, but "
 540                               "auto-discovery still in process\n",
 541                                ha->host_no, __func__));
 542                 ready = 1;
 543         }
 544
 545         return ready;
 546 }
 547
 548 /**
 549  * qla4xxx_init_firmware - initializes the firmware.
 550  * @ha: pointer to host adapter structure.
 551  *
 552  **/
 553 static int qla4xxx_init_firmware(struct scsi_qla_host *ha)
 554 {
 555         int status = QLA_ERROR;
 556
 557         if (is_aer_supported(ha) &&
 558             test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
 559                 return status;
 560
 561         /* For 82xx, stop firmware before initializing because if BIOS
 562          * has previously initialized firmware, then driver's initialize
 563          * firmware will fail. */
 564         if (is_qla80XX(ha))
 565                 qla4_8xxx_stop_firmware(ha);
 566
 567         ql4_printk(KERN_INFO, ha, "Initializing firmware..\n");
 568         if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR) {
 569                 DEBUG2(printk("scsi%ld: %s: Failed to initialize firmware "
 570                               "control block\n", ha->host_no, __func__));
 571                 return status;
 572         }
 573
 574         if (!qla4xxx_fw_ready(ha))
 575                 return status;
 576
 577         if (is_qla80XX(ha) && !test_bit(AF_INIT_DONE, &ha->flags))
 578                 qla4xxx_alloc_fw_dump(ha);
 579
 580         return qla4xxx_get_firmware_status(ha);
 581 }
 582
 583 static void qla4xxx_set_model_info(struct scsi_qla_host *ha)
 584 {
 585         uint16_t board_id_string[8];
 586         int i;
 587         int size = sizeof(ha->nvram->isp4022.boardIdStr);
 588         int offset = offsetof(struct eeprom_data, isp4022.boardIdStr) / 2;
 589
 590         for (i = 0; i < (size / 2) ; i++) {
 591                 board_id_string[i] = rd_nvram_word(ha, offset);
 592                 offset += 1;
 593         }
 594
 595         memcpy(ha->model_name, board_id_string, size);
 596 }
 597
 598 static int qla4xxx_config_nvram(struct scsi_qla_host *ha)
 599 {
 600         unsigned long flags;
 601         union external_hw_config_reg extHwConfig;
 602
 603         DEBUG2(printk("scsi%ld: %s: Get EEProm parameters \n", ha->host_no,
 604                       __func__));
 605         if (ql4xxx_lock_flash(ha) != QLA_SUCCESS)
 606                 return QLA_ERROR;
 607         if (ql4xxx_lock_nvram(ha) != QLA_SUCCESS) {
 608                 ql4xxx_unlock_flash(ha);
 609                 return QLA_ERROR;
 610         }
 611
 612         /* Get EEPRom Parameters from NVRAM and validate */
 613         ql4_printk(KERN_INFO, ha, "Configuring NVRAM ...\n");
 614         if (qla4xxx_is_nvram_configuration_valid(ha) == QLA_SUCCESS) {
 615                 spin_lock_irqsave(&ha->hardware_lock, flags);
 616                 extHwConfig.Asuint32_t =
 617                         rd_nvram_word(ha, eeprom_ext_hw_conf_offset(ha));
 618                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 619         } else {
 620                 ql4_printk(KERN_WARNING, ha,
 621                     "scsi%ld: %s: EEProm checksum invalid.  "
 622                     "Please update your EEPROM\n", ha->host_no,
 623                     __func__);
 624
 625                 /* Attempt to set defaults */
 626                 if (is_qla4010(ha))
 627                         extHwConfig.Asuint32_t = 0x1912;
 628                 else if (is_qla4022(ha) | is_qla4032(ha))
 629                         extHwConfig.Asuint32_t = 0x0023;
 630                 else
 631                         return QLA_ERROR;
 632         }
 633
 634         if (is_qla4022(ha) || is_qla4032(ha))
 635                 qla4xxx_set_model_info(ha);
 636         else
 637                 strcpy(ha->model_name, "QLA4010");
 638
 639         DEBUG(printk("scsi%ld: %s: Setting extHwConfig to 0xFFFF%04x\n",
 640                      ha->host_no, __func__, extHwConfig.Asuint32_t));
 641
 642         spin_lock_irqsave(&ha->hardware_lock, flags);
 643         writel((0xFFFF << 16) | extHwConfig.Asuint32_t, isp_ext_hw_conf(ha));
 644         readl(isp_ext_hw_conf(ha));
 645         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 646
 647         ql4xxx_unlock_nvram(ha);
 648         ql4xxx_unlock_flash(ha);
 649
 650         return QLA_SUCCESS;
 651 }
 652
 653 /**
 654  * qla4_8xxx_pci_config() - Setup ISP82xx PCI configuration registers.
 655  * @ha: HA context
 656  */
 657 void qla4_8xxx_pci_config(struct scsi_qla_host *ha)
 658 {
 659         pci_set_master(ha->pdev);
 660 }
 661
 662 void qla4xxx_pci_config(struct scsi_qla_host *ha)
 663 {
 664         uint16_t w;
 665         int status;
 666
 667         ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
 668
 669         pci_set_master(ha->pdev);
 670         status = pci_set_mwi(ha->pdev);
 671         /*
 672          * We want to respect framework's setting of PCI configuration space
 673          * command register and also want to make sure that all bits of
 674          * interest to us are properly set in command register.
 675          */
 676         pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
 677         w |= PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
 678         w &= ~PCI_COMMAND_INTX_DISABLE;
 679         pci_write_config_word(ha->pdev, PCI_COMMAND, w);
 680 }
 681
 682 static int qla4xxx_start_firmware_from_flash(struct scsi_qla_host *ha)
 683 {
 684         int status = QLA_ERROR;
 685         unsigned long max_wait_time;
 686         unsigned long flags;
 687         uint32_t mbox_status;
 688
 689         ql4_printk(KERN_INFO, ha, "Starting firmware ...\n");
 690
 691         /*
 692          * Start firmware from flash ROM
 693          *
 694          * WORKAROUND: Stuff a non-constant value that the firmware can
 695          * use as a seed for a random number generator in MB7 prior to
 696          * setting BOOT_ENABLE.  Fixes problem where the TCP
 697          * connections use the same TCP ports after each reboot,
 698          * causing some connections to not get re-established.
 699          */
 700         DEBUG(printk("scsi%d: %s: Start firmware from flash ROM\n",
 701                      ha->host_no, __func__));
 702
 703         spin_lock_irqsave(&ha->hardware_lock, flags);
 704         writel(jiffies, &ha->reg->mailbox[7]);
 705         if (is_qla4022(ha) | is_qla4032(ha))
 706                 writel(set_rmask(NVR_WRITE_ENABLE),
 707                        &ha->reg->u1.isp4022.nvram);
 708
 709         writel(2, &ha->reg->mailbox[6]);
 710         readl(&ha->reg->mailbox[6]);
 711
 712         writel(set_rmask(CSR_BOOT_ENABLE), &ha->reg->ctrl_status);
 713         readl(&ha->reg->ctrl_status);
 714         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 715
 716         /* Wait for firmware to come UP. */
 717         DEBUG2(printk(KERN_INFO "scsi%ld: %s: Wait up to %d seconds for "
 718                       "boot firmware to complete...\n",
 719                       ha->host_no, __func__, FIRMWARE_UP_TOV));
 720         max_wait_time = jiffies + (FIRMWARE_UP_TOV * HZ);
 721         do {
 722                 uint32_t ctrl_status;
 723
 724                 spin_lock_irqsave(&ha->hardware_lock, flags);
 725                 ctrl_status = readw(&ha->reg->ctrl_status);
 726                 mbox_status = readw(&ha->reg->mailbox[0]);
 727                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 728
 729                 if (ctrl_status & set_rmask(CSR_SCSI_PROCESSOR_INTR))
 730                         break;
 731                 if (mbox_status == MBOX_STS_COMMAND_COMPLETE)
 732                         break;
 733
 734                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: Waiting for boot "
 735                     "firmware to complete... ctrl_sts=0x%x, remaining=%ld\n",
 736                     ha->host_no, __func__, ctrl_status, max_wait_time));
 737
 738                 msleep_interruptible(250);
 739         } while (!time_after_eq(jiffies, max_wait_time));
 740
 741         if (mbox_status == MBOX_STS_COMMAND_COMPLETE) {
 742                 DEBUG(printk(KERN_INFO "scsi%ld: %s: Firmware has started\n",
 743                              ha->host_no, __func__));
 744
 745                 spin_lock_irqsave(&ha->hardware_lock, flags);
 746                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
 747                        &ha->reg->ctrl_status);
 748                 readl(&ha->reg->ctrl_status);
 749                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 750
 751                 status = QLA_SUCCESS;
 752         } else {
 753                 printk(KERN_INFO "scsi%ld: %s: Boot firmware failed "
 754                        "-  mbox status 0x%x\n", ha->host_no, __func__,
 755                        mbox_status);
 756                 status = QLA_ERROR;
 757         }
 758         return status;
 759 }
 760
 761 int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
 762 {
 763 #define QL4_LOCK_DRVR_WAIT      60
 764 #define QL4_LOCK_DRVR_SLEEP     1
 765
 766         int drvr_wait = QL4_LOCK_DRVR_WAIT;
 767         while (drvr_wait) {
 768                 if (ql4xxx_lock_drvr(a) == 0) {
 769                         ssleep(QL4_LOCK_DRVR_SLEEP);
 770                         if (drvr_wait) {
 771                                 DEBUG2(printk("scsi%ld: %s: Waiting for "
 772                                               "Global Init Semaphore(%d)...\n",
 773                                               a->host_no,
 774                                               __func__, drvr_wait));
 775                         }
 776                         drvr_wait -= QL4_LOCK_DRVR_SLEEP;
 777                 } else {
 778                         DEBUG2(printk("scsi%ld: %s: Global Init Semaphore "
 779                                       "acquired\n", a->host_no, __func__));
 780                         return QLA_SUCCESS;
 781                 }
 782         }
 783         return QLA_ERROR;
 784 }
 785
 786 /**
 787  * qla4xxx_start_firmware - starts qla4xxx firmware
 788  * @ha: Pointer to host adapter structure.
 789  *
 790  * This routine performs the necessary steps to start the firmware for
 791  * the QLA4010 adapter.
 792  **/
 793 int qla4xxx_start_firmware(struct scsi_qla_host *ha)
 794 {
 795         unsigned long flags = 0;
 796         uint32_t mbox_status;
 797         int status = QLA_ERROR;
 798         int soft_reset = 1;
 799         int config_chip = 0;
 800
 801         if (is_qla4022(ha) | is_qla4032(ha))
 802                 ql4xxx_set_mac_number(ha);
 803
 804         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
 805                 return QLA_ERROR;
 806
 807         spin_lock_irqsave(&ha->hardware_lock, flags);
 808
 809         DEBUG2(printk("scsi%ld: %s: port_ctrl   = 0x%08X\n", ha->host_no,
 810                       __func__, readw(isp_port_ctrl(ha))));
 811         DEBUG(printk("scsi%ld: %s: port_status = 0x%08X\n", ha->host_no,
 812                      __func__, readw(isp_port_status(ha))));
 813
 814         /* Is Hardware already initialized? */
 815         if ((readw(isp_port_ctrl(ha)) & 0x8000) != 0) {
 816                 DEBUG(printk("scsi%ld: %s: Hardware has already been "
 817                              "initialized\n", ha->host_no, __func__));
 818
 819                 /* Receive firmware boot acknowledgement */
 820                 mbox_status = readw(&ha->reg->mailbox[0]);
 821
 822                 DEBUG2(printk("scsi%ld: %s: H/W Config complete - mbox[0]= "
 823                               "0x%x\n", ha->host_no, __func__, mbox_status));
 824
 825                 /* Is firmware already booted? */
 826                 if (mbox_status == 0) {
 827                         /* F/W not running, must be config by net driver */
 828                         config_chip = 1;
 829                         soft_reset = 0;
 830                 } else {
 831                         writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
 832                                &ha->reg->ctrl_status);
 833                         readl(&ha->reg->ctrl_status);
 834                         writel(set_rmask(CSR_SCSI_COMPLETION_INTR),
 835                                &ha->reg->ctrl_status);
 836                         readl(&ha->reg->ctrl_status);
 837                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 838                         if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
 839                                 DEBUG2(printk("scsi%ld: %s: Get firmware "
 840                                               "state -- state = 0x%x\n",
 841                                               ha->host_no,
 842                                               __func__, ha->firmware_state));
 843                                 /* F/W is running */
 844                                 if (ha->firmware_state &
 845                                     FW_STATE_CONFIG_WAIT) {
 846                                         DEBUG2(printk("scsi%ld: %s: Firmware "
 847                                                       "in known state -- "
 848                                                       "config and "
 849                                                       "boot, state = 0x%x\n",
 850                                                       ha->host_no, __func__,
 851                                                       ha->firmware_state));
 852                                         config_chip = 1;
 853                                         soft_reset = 0;
 854                                 }
 855                         } else {
 856                                 DEBUG2(printk("scsi%ld: %s: Firmware in "
 857                                               "unknown state -- resetting,"
 858                                               " state = "
 859                                               "0x%x\n", ha->host_no, __func__,
 860                                               ha->firmware_state));
 861                         }
 862                         spin_lock_irqsave(&ha->hardware_lock, flags);
 863                 }
 864         } else {
 865                 DEBUG(printk("scsi%ld: %s: H/W initialization hasn't been "
 866                              "started - resetting\n", ha->host_no, __func__));
 867         }
 868         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 869
 870         DEBUG(printk("scsi%ld: %s: Flags soft_rest=%d, config= %d\n ",
 871                      ha->host_no, __func__, soft_reset, config_chip));
 872         if (soft_reset) {
 873                 DEBUG(printk("scsi%ld: %s: Issue Soft Reset\n", ha->host_no,
 874                              __func__));
 875                 status = qla4xxx_soft_reset(ha);        /* NOTE: acquires drvr
 876                                                          * lock again, but ok */
 877                 if (status == QLA_ERROR) {
 878                         DEBUG(printk("scsi%d: %s: Soft Reset failed!\n",
 879                                      ha->host_no, __func__));
 880                         ql4xxx_unlock_drvr(ha);
 881                         return QLA_ERROR;
 882                 }
 883                 config_chip = 1;
 884
 885                 /* Reset clears the semaphore, so acquire again */
 886                 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
 887                         return QLA_ERROR;
 888         }
 889
 890         if (config_chip) {
 891                 if ((status = qla4xxx_config_nvram(ha)) == QLA_SUCCESS)
 892                         status = qla4xxx_start_firmware_from_flash(ha);
 893         }
 894
 895         ql4xxx_unlock_drvr(ha);
 896         if (status == QLA_SUCCESS) {
 897                 if (test_and_clear_bit(AF_GET_CRASH_RECORD, &ha->flags))
 898                         qla4xxx_get_crash_record(ha);
 899
 900                 qla4xxx_init_rings(ha);
 901         } else {
 902                 DEBUG(printk("scsi%ld: %s: Firmware has NOT started\n",
 903                              ha->host_no, __func__));
 904         }
 905         return status;
 906 }
 907 /**
 908  * qla4xxx_free_ddb_index - Free DDBs reserved by firmware
 909  * @ha: pointer to adapter structure
 910  *
 911  * Since firmware is not running in autoconnect mode the DDB indices should
 912  * be freed so that when login happens from user space there are free DDB
 913  * indices available.
 914  **/
 915 void qla4xxx_free_ddb_index(struct scsi_qla_host *ha)
 916 {
 917         int max_ddbs;
 918         int ret;
 919         uint32_t idx = 0, next_idx = 0;
 920         uint32_t state = 0, conn_err = 0;
 921
 922         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
 923                                      MAX_DEV_DB_ENTRIES;
 924
 925         for (idx = 0; idx < max_ddbs; idx = next_idx) {
 926                 ret = qla4xxx_get_fwddb_entry(ha, idx, NULL, 0, NULL,
 927                                               &next_idx, &state, &conn_err,
 928                                                 NULL, NULL);
 929                 if (ret == QLA_ERROR) {
 930                         next_idx++;
 931                         continue;
 932                 }
 933                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
 934                     state == DDB_DS_SESSION_FAILED) {
 935                         DEBUG2(ql4_printk(KERN_INFO, ha,
 936                                           "Freeing DDB index = 0x%x\n", idx));
 937                         ret = qla4xxx_clear_ddb_entry(ha, idx);
 938                         if (ret == QLA_ERROR)
 939                                 ql4_printk(KERN_ERR, ha,
 940                                            "Unable to clear DDB index = "
 941                                            "0x%x\n", idx);
 942                 }
 943                 if (next_idx == 0)
 944                         break;
 945         }
 946 }
 947
 948 /**
 949  * qla4xxx_initialize_adapter - initiailizes hba
 950  * @ha: Pointer to host adapter structure.
 951  *
 952  * This routine parforms all of the steps necessary to initialize the adapter.
 953  *
 954  **/
 955 int qla4xxx_initialize_adapter(struct scsi_qla_host *ha, int is_reset)
 956 {
 957         int status = QLA_ERROR;
 958
 959         ha->eeprom_cmd_data = 0;
 960
 961         ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
 962         ha->isp_ops->pci_config(ha);
 963
 964         ha->isp_ops->disable_intrs(ha);
 965
 966         /* Initialize the Host adapter request/response queues and firmware */
 967         if (ha->isp_ops->start_firmware(ha) == QLA_ERROR)
 968                 goto exit_init_hba;
 969
 970         /*
 971          * For ISP83XX, mailbox and IOCB interrupts are enabled separately.
 972          * Mailbox interrupts must be enabled prior to issuing any mailbox
 973          * command in order to prevent the possibility of losing interrupts
 974          * while switching from polling to interrupt mode. IOCB interrupts are
 975          * enabled via isp_ops->enable_intrs.
 976          */
 977         if (is_qla8032(ha) || is_qla8042(ha))
 978                 qla4_83xx_enable_mbox_intrs(ha);
 979
 980         if (qla4xxx_about_firmware(ha) == QLA_ERROR)
 981                 goto exit_init_hba;
 982
 983         if (ha->isp_ops->get_sys_info(ha) == QLA_ERROR)
 984                 goto exit_init_hba;
 985
 986         qla4xxx_init_local_data(ha);
 987
 988         status = qla4xxx_init_firmware(ha);
 989         if (status == QLA_ERROR)
 990                 goto exit_init_hba;
 991
 992         if (is_reset == RESET_ADAPTER)
 993                 qla4xxx_build_ddb_list(ha, is_reset);
 994
 995         set_bit(AF_ONLINE, &ha->flags);
 996
 997 exit_init_hba:
 998         DEBUG2(printk("scsi%ld: initialize adapter: %s\n", ha->host_no,
 999             status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
1000         return status;
1001 }
1002
1003 int qla4xxx_ddb_change(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
1004                        struct ddb_entry *ddb_entry, uint32_t state)
1005 {
1006         uint32_t old_fw_ddb_device_state;
1007         int status = QLA_ERROR;
1008
1009         old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
1010         DEBUG2(ql4_printk(KERN_INFO, ha,
1011                           "%s: DDB - old state = 0x%x, new state = 0x%x for "
1012                           "index [%d]\n", __func__,
1013                           ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
1014
1015         ddb_entry->fw_ddb_device_state = state;
1016
1017         switch (old_fw_ddb_device_state) {
1018         case DDB_DS_LOGIN_IN_PROCESS:
1019                 switch (state) {
1020                 case DDB_DS_SESSION_ACTIVE:
1021                 case DDB_DS_DISCOVERY:
1022                         qla4xxx_update_session_conn_param(ha, ddb_entry);
1023                         ddb_entry->unblock_sess(ddb_entry->sess);
1024                         status = QLA_SUCCESS;
1025                         break;
1026                 case DDB_DS_SESSION_FAILED:
1027                 case DDB_DS_NO_CONNECTION_ACTIVE:
1028                         iscsi_conn_login_event(ddb_entry->conn,
1029                                                ISCSI_CONN_STATE_FREE);
1030                         status = QLA_SUCCESS;
1031                         break;
1032                 }
1033                 break;
1034         case DDB_DS_SESSION_ACTIVE:
1035         case DDB_DS_DISCOVERY:
1036                 switch (state) {
1037                 case DDB_DS_SESSION_FAILED:
1038                         /*
1039                          * iscsi_session failure  will cause userspace to
1040                          * stop the connection which in turn would block the
1041                          * iscsi_session and start relogin
1042                          */
1043                         iscsi_session_failure(ddb_entry->sess->dd_data,
1044                                               ISCSI_ERR_CONN_FAILED);
1045                         status = QLA_SUCCESS;
1046                         break;
1047                 case DDB_DS_NO_CONNECTION_ACTIVE:
1048                         clear_bit(fw_ddb_index, ha->ddb_idx_map);
1049                         status = QLA_SUCCESS;
1050                         break;
1051                 }
1052                 break;
1053         case DDB_DS_SESSION_FAILED:
1054                 switch (state) {
1055                 case DDB_DS_SESSION_ACTIVE:
1056                 case DDB_DS_DISCOVERY:
1057                         ddb_entry->unblock_sess(ddb_entry->sess);
1058                         qla4xxx_update_session_conn_param(ha, ddb_entry);
1059                         status = QLA_SUCCESS;
1060                         break;
1061                 case DDB_DS_SESSION_FAILED:
1062                         iscsi_session_failure(ddb_entry->sess->dd_data,
1063                                               ISCSI_ERR_CONN_FAILED);
1064                         status = QLA_SUCCESS;
1065                         break;
1066                 }
1067                 break;
1068         default:
1069                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unknown Event\n",
1070                                 __func__));
1071                 break;
1072         }
1073         return status;
1074 }
1075
1076 void qla4xxx_arm_relogin_timer(struct ddb_entry *ddb_entry)
1077 {
1078         /*
1079          * This triggers a relogin.  After the relogin_timer
1080          * expires, the relogin gets scheduled.  We must wait a
1081          * minimum amount of time since receiving an 0x8014 AEN
1082          * with failed device_state or a logout response before
1083          * we can issue another relogin.
1084          *
1085          * Firmware pads this timeout: (time2wait +1).
1086          * Driver retry to login should be longer than F/W.
1087          * Otherwise F/W will fail
1088          * set_ddb() mbx cmd with 0x4005 since it still
1089          * counting down its time2wait.
1090          */
1091         atomic_set(&ddb_entry->relogin_timer, 0);
1092         atomic_set(&ddb_entry->retry_relogin_timer,
1093                    ddb_entry->default_time2wait + 4);
1094
1095 }
1096
1097 int qla4xxx_flash_ddb_change(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
1098                              struct ddb_entry *ddb_entry, uint32_t state)
1099 {
1100         uint32_t old_fw_ddb_device_state;
1101         int status = QLA_ERROR;
1102
1103         old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
1104         DEBUG2(ql4_printk(KERN_INFO, ha,
1105                           "%s: DDB - old state = 0x%x, new state = 0x%x for "
1106                           "index [%d]\n", __func__,
1107                           ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
1108
1109         ddb_entry->fw_ddb_device_state = state;
1110
1111         switch (old_fw_ddb_device_state) {
1112         case DDB_DS_LOGIN_IN_PROCESS:
1113         case DDB_DS_NO_CONNECTION_ACTIVE:
1114                 switch (state) {
1115                 case DDB_DS_SESSION_ACTIVE:
1116                         ddb_entry->unblock_sess(ddb_entry->sess);
1117                         qla4xxx_update_session_conn_fwddb_param(ha, ddb_entry);
1118                         status = QLA_SUCCESS;
1119                         break;
1120                 case DDB_DS_SESSION_FAILED:
1121                         iscsi_block_session(ddb_entry->sess);
1122                         if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
1123                                 qla4xxx_arm_relogin_timer(ddb_entry);
1124                         status = QLA_SUCCESS;
1125                         break;
1126                 }
1127                 break;
1128         case DDB_DS_SESSION_ACTIVE:
1129                 switch (state) {
1130                 case DDB_DS_SESSION_FAILED:
1131                         iscsi_block_session(ddb_entry->sess);
1132                         if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
1133                                 qla4xxx_arm_relogin_timer(ddb_entry);
1134                         status = QLA_SUCCESS;
1135                         break;
1136                 }
1137                 break;
1138         case DDB_DS_SESSION_FAILED:
1139                 switch (state) {
1140                 case DDB_DS_SESSION_ACTIVE:
1141                         ddb_entry->unblock_sess(ddb_entry->sess);
1142                         qla4xxx_update_session_conn_fwddb_param(ha, ddb_entry);
1143                         status = QLA_SUCCESS;
1144                         break;
1145                 case DDB_DS_SESSION_FAILED:
1146                         if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
1147                                 qla4xxx_arm_relogin_timer(ddb_entry);
1148                         status = QLA_SUCCESS;
1149                         break;
1150                 }
1151                 break;
1152         default:
1153                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unknown Event\n",
1154                                   __func__));
1155                 break;
1156         }
1157         return status;
1158 }
1159
1160 /**
1161  * qla4xxx_process_ddb_changed - process ddb state change
1162  * @ha - Pointer to host adapter structure.
1163  * @fw_ddb_index - Firmware's device database index
1164  * @state - Device state
1165  *
1166  * This routine processes a Decive Database Changed AEN Event.
1167  **/
1168 int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha,
1169                                 uint32_t fw_ddb_index,
1170                                 uint32_t state, uint32_t conn_err)
1171 {
1172         struct ddb_entry *ddb_entry;
1173         int status = QLA_ERROR;
1174
1175         /* check for out of range index */
1176         if (fw_ddb_index >= MAX_DDB_ENTRIES)
1177                 goto exit_ddb_event;
1178
1179         /* Get the corresponging ddb entry */
1180         ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
1181         /* Device does not currently exist in our database. */
1182         if (ddb_entry == NULL) {
1183                 ql4_printk(KERN_ERR, ha, "%s: No ddb_entry at FW index [%d]\n",
1184                            __func__, fw_ddb_index);
1185
1186                 if (state == DDB_DS_NO_CONNECTION_ACTIVE)
1187                         clear_bit(fw_ddb_index, ha->ddb_idx_map);
1188
1189                 goto exit_ddb_event;
1190         }
1191
1192         ddb_entry->ddb_change(ha, fw_ddb_index, ddb_entry, state);
1193
1194 exit_ddb_event:
1195         return status;
1196 }
1197
1198 /**
1199  * qla4xxx_login_flash_ddb - Login to target (DDB)
1200  * @cls_session: Pointer to the session to login
1201  *
1202  * This routine logins to the target.
1203  * Issues setddb and conn open mbx
1204  **/
1205 void qla4xxx_login_flash_ddb(struct iscsi_cls_session *cls_session)
1206 {
1207         struct iscsi_session *sess;
1208         struct ddb_entry *ddb_entry;
1209         struct scsi_qla_host *ha;
1210         struct dev_db_entry *fw_ddb_entry = NULL;
1211         dma_addr_t fw_ddb_dma;
1212         uint32_t mbx_sts = 0;
1213         int ret;
1214
1215         sess = cls_session->dd_data;
1216         ddb_entry = sess->dd_data;
1217         ha =  ddb_entry->ha;
1218
1219         if (!test_bit(AF_LINK_UP, &ha->flags))
1220                 return;
1221
1222         if (ddb_entry->ddb_type != FLASH_DDB) {
1223                 DEBUG2(ql4_printk(KERN_INFO, ha,
1224                                   "Skipping login to non FLASH DB"));
1225                 goto exit_login;
1226         }
1227
1228         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
1229                                       &fw_ddb_dma);
1230         if (fw_ddb_entry == NULL) {
1231                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
1232                 goto exit_login;
1233         }
1234
1235         if (ddb_entry->fw_ddb_index == INVALID_ENTRY) {
1236                 ret = qla4xxx_get_ddb_index(ha, &ddb_entry->fw_ddb_index);
1237                 if (ret == QLA_ERROR)
1238                         goto exit_login;
1239
1240                 ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
1241                 ha->tot_ddbs++;
1242         }
1243
1244         memcpy(fw_ddb_entry, &ddb_entry->fw_ddb_entry,
1245                sizeof(struct dev_db_entry));
1246         ddb_entry->sess->target_id = ddb_entry->fw_ddb_index;
1247
1248         ret = qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index,
1249                                     fw_ddb_dma, &mbx_sts);
1250         if (ret == QLA_ERROR) {
1251                 DEBUG2(ql4_printk(KERN_ERR, ha, "Set DDB failed\n"));
1252                 goto exit_login;
1253         }
1254
1255         ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
1256         ret = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
1257         if (ret == QLA_ERROR) {
1258                 ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
1259                            sess->targetname);
1260                 goto exit_login;
1261         }
1262
1263 exit_login:
1264         if (fw_ddb_entry)
1265                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
1266 }
1267