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