drivers/scsi/qla4xxx/ql4_init.c

   1 /*
   2  * QLogic iSCSI HBA Driver
   3  * Copyright (c)  2003-2012 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)) {
 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 int qla4xxx_init_local_data(struct scsi_qla_host *ha)
 199 {
 200         /* Initialize aen queue */
 201         ha->aen_q_count = MAX_AEN_ENTRIES;
 202
 203         return qla4xxx_get_firmware_status(ha);
 204 }
 205
 206 static uint8_t
 207 qla4xxx_wait_for_ip_config(struct scsi_qla_host *ha)
 208 {
 209         uint8_t ipv4_wait = 0;
 210         uint8_t ipv6_wait = 0;
 211         int8_t ip_address[IPv6_ADDR_LEN] = {0} ;
 212
 213         /* If both IPv4 & IPv6 are enabled, possibly only one
 214          * IP address may be acquired, so check to see if we
 215          * need to wait for another */
 216         if (is_ipv4_enabled(ha) && is_ipv6_enabled(ha)) {
 217                 if (((ha->addl_fw_state & FW_ADDSTATE_DHCPv4_ENABLED) != 0) &&
 218                     ((ha->addl_fw_state &
 219                                     FW_ADDSTATE_DHCPv4_LEASE_ACQUIRED) == 0)) {
 220                         ipv4_wait = 1;
 221                 }
 222                 if (((ha->ip_config.ipv6_addl_options &
 223                       IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) != 0) &&
 224                     ((ha->ip_config.ipv6_link_local_state ==
 225                       IP_ADDRSTATE_ACQUIRING) ||
 226                      (ha->ip_config.ipv6_addr0_state ==
 227                       IP_ADDRSTATE_ACQUIRING) ||
 228                      (ha->ip_config.ipv6_addr1_state ==
 229                       IP_ADDRSTATE_ACQUIRING))) {
 230
 231                         ipv6_wait = 1;
 232
 233                         if ((ha->ip_config.ipv6_link_local_state ==
 234                              IP_ADDRSTATE_PREFERRED) ||
 235                             (ha->ip_config.ipv6_addr0_state ==
 236                              IP_ADDRSTATE_PREFERRED) ||
 237                             (ha->ip_config.ipv6_addr1_state ==
 238                              IP_ADDRSTATE_PREFERRED)) {
 239                                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
 240                                               "Preferred IP configured."
 241                                               " Don't wait!\n", ha->host_no,
 242                                               __func__));
 243                                 ipv6_wait = 0;
 244                         }
 245                         if (memcmp(&ha->ip_config.ipv6_default_router_addr,
 246                                    ip_address, IPv6_ADDR_LEN) == 0) {
 247                                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
 248                                               "No Router configured. "
 249                                               "Don't wait!\n", ha->host_no,
 250                                               __func__));
 251                                 ipv6_wait = 0;
 252                         }
 253                         if ((ha->ip_config.ipv6_default_router_state ==
 254                              IPV6_RTRSTATE_MANUAL) &&
 255                             (ha->ip_config.ipv6_link_local_state ==
 256                              IP_ADDRSTATE_TENTATIVE) &&
 257                             (memcmp(&ha->ip_config.ipv6_link_local_addr,
 258                              &ha->ip_config.ipv6_default_router_addr, 4) ==
 259                              0)) {
 260                                 DEBUG2(printk("scsi%ld: %s: LinkLocal Router & "
 261                                         "IP configured. Don't wait!\n",
 262                                         ha->host_no, __func__));
 263                                 ipv6_wait = 0;
 264                         }
 265                 }
 266                 if (ipv4_wait || ipv6_wait) {
 267                         DEBUG2(printk("scsi%ld: %s: Wait for additional "
 268                                       "IP(s) \"", ha->host_no, __func__));
 269                         if (ipv4_wait)
 270                                 DEBUG2(printk("IPv4 "));
 271                         if (ha->ip_config.ipv6_link_local_state ==
 272                             IP_ADDRSTATE_ACQUIRING)
 273                                 DEBUG2(printk("IPv6LinkLocal "));
 274                         if (ha->ip_config.ipv6_addr0_state ==
 275                             IP_ADDRSTATE_ACQUIRING)
 276                                 DEBUG2(printk("IPv6Addr0 "));
 277                         if (ha->ip_config.ipv6_addr1_state ==
 278                             IP_ADDRSTATE_ACQUIRING)
 279                                 DEBUG2(printk("IPv6Addr1 "));
 280                         DEBUG2(printk("\"\n"));
 281                 }
 282         }
 283
 284         return ipv4_wait|ipv6_wait;
 285 }
 286
 287 /**
 288  * qla4xxx_alloc_fw_dump - Allocate memory for minidump data.
 289  * @ha: pointer to host adapter structure.
 290  **/
 291 void qla4xxx_alloc_fw_dump(struct scsi_qla_host *ha)
 292 {
 293         int status;
 294         uint32_t capture_debug_level;
 295         int hdr_entry_bit, k;
 296         void *md_tmp;
 297         dma_addr_t md_tmp_dma;
 298         struct qla4_8xxx_minidump_template_hdr *md_hdr;
 299
 300         if (ha->fw_dump) {
 301                 ql4_printk(KERN_WARNING, ha,
 302                            "Firmware dump previously allocated.\n");
 303                 return;
 304         }
 305
 306         status = qla4xxx_req_template_size(ha);
 307         if (status != QLA_SUCCESS) {
 308                 ql4_printk(KERN_INFO, ha,
 309                            "scsi%ld: Failed to get template size\n",
 310                            ha->host_no);
 311                 return;
 312         }
 313
 314         clear_bit(AF_82XX_FW_DUMPED, &ha->flags);
 315
 316         /* Allocate memory for saving the template */
 317         md_tmp = dma_alloc_coherent(&ha->pdev->dev, ha->fw_dump_tmplt_size,
 318                                     &md_tmp_dma, GFP_KERNEL);
 319
 320         /* Request template */
 321         status =  qla4xxx_get_minidump_template(ha, md_tmp_dma);
 322         if (status != QLA_SUCCESS) {
 323                 ql4_printk(KERN_INFO, ha,
 324                            "scsi%ld: Failed to get minidump template\n",
 325                            ha->host_no);
 326                 goto alloc_cleanup;
 327         }
 328
 329         md_hdr = (struct qla4_8xxx_minidump_template_hdr *)md_tmp;
 330
 331         capture_debug_level = md_hdr->capture_debug_level;
 332
 333         /* Get capture mask based on module loadtime setting. */
 334         if (ql4xmdcapmask >= 0x3 && ql4xmdcapmask <= 0x7F)
 335                 ha->fw_dump_capture_mask = ql4xmdcapmask;
 336         else
 337                 ha->fw_dump_capture_mask = capture_debug_level;
 338
 339         md_hdr->driver_capture_mask = ha->fw_dump_capture_mask;
 340
 341         DEBUG2(ql4_printk(KERN_INFO, ha, "Minimum num of entries = %d\n",
 342                           md_hdr->num_of_entries));
 343         DEBUG2(ql4_printk(KERN_INFO, ha, "Dump template size  = %d\n",
 344                           ha->fw_dump_tmplt_size));
 345         DEBUG2(ql4_printk(KERN_INFO, ha, "Selected Capture mask =0x%x\n",
 346                           ha->fw_dump_capture_mask));
 347
 348         /* Calculate fw_dump_size */
 349         for (hdr_entry_bit = 0x2, k = 1; (hdr_entry_bit & 0xFF);
 350              hdr_entry_bit <<= 1, k++) {
 351                 if (hdr_entry_bit & ha->fw_dump_capture_mask)
 352                         ha->fw_dump_size += md_hdr->capture_size_array[k];
 353         }
 354
 355         /* Total firmware dump size including command header */
 356         ha->fw_dump_size += ha->fw_dump_tmplt_size;
 357         ha->fw_dump = vmalloc(ha->fw_dump_size);
 358         if (!ha->fw_dump)
 359                 goto alloc_cleanup;
 360
 361         DEBUG2(ql4_printk(KERN_INFO, ha,
 362                           "Minidump Tempalate Size = 0x%x KB\n",
 363                           ha->fw_dump_tmplt_size));
 364         DEBUG2(ql4_printk(KERN_INFO, ha,
 365                           "Total Minidump size = 0x%x KB\n", ha->fw_dump_size));
 366
 367         memcpy(ha->fw_dump, md_tmp, ha->fw_dump_tmplt_size);
 368         ha->fw_dump_tmplt_hdr = ha->fw_dump;
 369
 370 alloc_cleanup:
 371         dma_free_coherent(&ha->pdev->dev, ha->fw_dump_tmplt_size,
 372                           md_tmp, md_tmp_dma);
 373 }
 374
 375 static int qla4xxx_fw_ready(struct scsi_qla_host *ha)
 376 {
 377         uint32_t timeout_count;
 378         int ready = 0;
 379
 380         DEBUG2(ql4_printk(KERN_INFO, ha, "Waiting for Firmware Ready..\n"));
 381         for (timeout_count = ADAPTER_INIT_TOV; timeout_count > 0;
 382              timeout_count--) {
 383                 if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
 384                         qla4xxx_get_dhcp_ip_address(ha);
 385
 386                 /* Get firmware state. */
 387                 if (qla4xxx_get_firmware_state(ha) != QLA_SUCCESS) {
 388                         DEBUG2(printk("scsi%ld: %s: unable to get firmware "
 389                                       "state\n", ha->host_no, __func__));
 390                         break;
 391                 }
 392
 393                 if (ha->firmware_state & FW_STATE_ERROR) {
 394                         DEBUG2(printk("scsi%ld: %s: an unrecoverable error has"
 395                                       " occurred\n", ha->host_no, __func__));
 396                         break;
 397
 398                 }
 399                 if (ha->firmware_state & FW_STATE_CONFIG_WAIT) {
 400                         /*
 401                          * The firmware has not yet been issued an Initialize
 402                          * Firmware command, so issue it now.
 403                          */
 404                         if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR)
 405                                 break;
 406
 407                         /* Go back and test for ready state - no wait. */
 408                         continue;
 409                 }
 410
 411                 if (ha->firmware_state & FW_STATE_WAIT_AUTOCONNECT) {
 412                         DEBUG2(printk(KERN_INFO "scsi%ld: %s: fwstate:"
 413                                       "AUTOCONNECT in progress\n",
 414                                       ha->host_no, __func__));
 415                 }
 416
 417                 if (ha->firmware_state & FW_STATE_CONFIGURING_IP) {
 418                         DEBUG2(printk(KERN_INFO "scsi%ld: %s: fwstate:"
 419                                       " CONFIGURING IP\n",
 420                                       ha->host_no, __func__));
 421                         /*
 422                          * Check for link state after 15 secs and if link is
 423                          * still DOWN then, cable is unplugged. Ignore "DHCP
 424                          * in Progress/CONFIGURING IP" bit to check if firmware
 425                          * is in ready state or not after 15 secs.
 426                          * This is applicable for both 2.x & 3.x firmware
 427                          */
 428                         if (timeout_count <= (ADAPTER_INIT_TOV - 15)) {
 429                                 if (ha->addl_fw_state & FW_ADDSTATE_LINK_UP) {
 430                                         DEBUG2(printk(KERN_INFO "scsi%ld: %s:"
 431                                                   " LINK UP (Cable plugged)\n",
 432                                                   ha->host_no, __func__));
 433                                 } else if (ha->firmware_state &
 434                                           (FW_STATE_CONFIGURING_IP |
 435                                                              FW_STATE_READY)) {
 436                                         DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
 437                                                 "LINK DOWN (Cable unplugged)\n",
 438                                                 ha->host_no, __func__));
 439                                         ha->firmware_state = FW_STATE_READY;
 440                                 }
 441                         }
 442                 }
 443
 444                 if (ha->firmware_state == FW_STATE_READY) {
 445                         /* If DHCP IP Addr is available, retrieve it now. */
 446                         if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR,
 447                                                                 &ha->dpc_flags))
 448                                 qla4xxx_get_dhcp_ip_address(ha);
 449
 450                         if (!qla4xxx_wait_for_ip_config(ha) ||
 451                                                         timeout_count == 1) {
 452                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 453                                     "Firmware Ready..\n"));
 454                                 /* The firmware is ready to process SCSI
 455                                    commands. */
 456                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 457                                         "scsi%ld: %s: MEDIA TYPE"
 458                                         " - %s\n", ha->host_no,
 459                                         __func__, (ha->addl_fw_state &
 460                                         FW_ADDSTATE_OPTICAL_MEDIA)
 461                                         != 0 ? "OPTICAL" : "COPPER"));
 462                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 463                                         "scsi%ld: %s: DHCPv4 STATE"
 464                                         " Enabled %s\n", ha->host_no,
 465                                          __func__, (ha->addl_fw_state &
 466                                          FW_ADDSTATE_DHCPv4_ENABLED) != 0 ?
 467                                         "YES" : "NO"));
 468                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 469                                         "scsi%ld: %s: LINK %s\n",
 470                                         ha->host_no, __func__,
 471                                         (ha->addl_fw_state &
 472                                          FW_ADDSTATE_LINK_UP) != 0 ?
 473                                         "UP" : "DOWN"));
 474                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 475                                         "scsi%ld: %s: iSNS Service "
 476                                         "Started %s\n",
 477                                         ha->host_no, __func__,
 478                                         (ha->addl_fw_state &
 479                                          FW_ADDSTATE_ISNS_SVC_ENABLED) != 0 ?
 480                                         "YES" : "NO"));
 481
 482                                 ready = 1;
 483                                 break;
 484                         }
 485                 }
 486                 DEBUG2(printk("scsi%ld: %s: waiting on fw, state=%x:%x - "
 487                               "seconds expired= %d\n", ha->host_no, __func__,
 488                               ha->firmware_state, ha->addl_fw_state,
 489                               timeout_count));
 490                 if (is_qla4032(ha) &&
 491                         !(ha->addl_fw_state & FW_ADDSTATE_LINK_UP) &&
 492                         (timeout_count < ADAPTER_INIT_TOV - 5)) {
 493                         break;
 494                 }
 495
 496                 msleep(1000);
 497         }                       /* end of for */
 498
 499         if (timeout_count <= 0)
 500                 DEBUG2(printk("scsi%ld: %s: FW Initialization timed out!\n",
 501                               ha->host_no, __func__));
 502
 503         if (ha->firmware_state & FW_STATE_CONFIGURING_IP) {
 504                 DEBUG2(printk("scsi%ld: %s: FW initialized, but is reporting "
 505                               "it's waiting to configure an IP address\n",
 506                                ha->host_no, __func__));
 507                 ready = 1;
 508         } else if (ha->firmware_state & FW_STATE_WAIT_AUTOCONNECT) {
 509                 DEBUG2(printk("scsi%ld: %s: FW initialized, but "
 510                               "auto-discovery still in process\n",
 511                                ha->host_no, __func__));
 512                 ready = 1;
 513         }
 514
 515         return ready;
 516 }
 517
 518 /**
 519  * qla4xxx_init_firmware - initializes the firmware.
 520  * @ha: pointer to host adapter structure.
 521  *
 522  **/
 523 static int qla4xxx_init_firmware(struct scsi_qla_host *ha)
 524 {
 525         int status = QLA_ERROR;
 526
 527         if (is_aer_supported(ha) &&
 528             test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
 529                 return status;
 530
 531         /* For 82xx, stop firmware before initializing because if BIOS
 532          * has previously initialized firmware, then driver's initialize
 533          * firmware will fail. */
 534         if (is_qla80XX(ha))
 535                 qla4_8xxx_stop_firmware(ha);
 536
 537         ql4_printk(KERN_INFO, ha, "Initializing firmware..\n");
 538         if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR) {
 539                 DEBUG2(printk("scsi%ld: %s: Failed to initialize firmware "
 540                               "control block\n", ha->host_no, __func__));
 541                 return status;
 542         }
 543
 544         if (!qla4xxx_fw_ready(ha))
 545                 return status;
 546
 547         if (is_qla80XX(ha) && !test_bit(AF_INIT_DONE, &ha->flags))
 548                 qla4xxx_alloc_fw_dump(ha);
 549
 550         return qla4xxx_get_firmware_status(ha);
 551 }
 552
 553 static void qla4xxx_set_model_info(struct scsi_qla_host *ha)
 554 {
 555         uint16_t board_id_string[8];
 556         int i;
 557         int size = sizeof(ha->nvram->isp4022.boardIdStr);
 558         int offset = offsetof(struct eeprom_data, isp4022.boardIdStr) / 2;
 559
 560         for (i = 0; i < (size / 2) ; i++) {
 561                 board_id_string[i] = rd_nvram_word(ha, offset);
 562                 offset += 1;
 563         }
 564
 565         memcpy(ha->model_name, board_id_string, size);
 566 }
 567
 568 static int qla4xxx_config_nvram(struct scsi_qla_host *ha)
 569 {
 570         unsigned long flags;
 571         union external_hw_config_reg extHwConfig;
 572
 573         DEBUG2(printk("scsi%ld: %s: Get EEProm parameters \n", ha->host_no,
 574                       __func__));
 575         if (ql4xxx_lock_flash(ha) != QLA_SUCCESS)
 576                 return QLA_ERROR;
 577         if (ql4xxx_lock_nvram(ha) != QLA_SUCCESS) {
 578                 ql4xxx_unlock_flash(ha);
 579                 return QLA_ERROR;
 580         }
 581
 582         /* Get EEPRom Parameters from NVRAM and validate */
 583         ql4_printk(KERN_INFO, ha, "Configuring NVRAM ...\n");
 584         if (qla4xxx_is_nvram_configuration_valid(ha) == QLA_SUCCESS) {
 585                 spin_lock_irqsave(&ha->hardware_lock, flags);
 586                 extHwConfig.Asuint32_t =
 587                         rd_nvram_word(ha, eeprom_ext_hw_conf_offset(ha));
 588                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 589         } else {
 590                 ql4_printk(KERN_WARNING, ha,
 591                     "scsi%ld: %s: EEProm checksum invalid.  "
 592                     "Please update your EEPROM\n", ha->host_no,
 593                     __func__);
 594
 595                 /* Attempt to set defaults */
 596                 if (is_qla4010(ha))
 597                         extHwConfig.Asuint32_t = 0x1912;
 598                 else if (is_qla4022(ha) | is_qla4032(ha))
 599                         extHwConfig.Asuint32_t = 0x0023;
 600                 else
 601                         return QLA_ERROR;
 602         }
 603
 604         if (is_qla4022(ha) || is_qla4032(ha))
 605                 qla4xxx_set_model_info(ha);
 606         else
 607                 strcpy(ha->model_name, "QLA4010");
 608
 609         DEBUG(printk("scsi%ld: %s: Setting extHwConfig to 0xFFFF%04x\n",
 610                      ha->host_no, __func__, extHwConfig.Asuint32_t));
 611
 612         spin_lock_irqsave(&ha->hardware_lock, flags);
 613         writel((0xFFFF << 16) | extHwConfig.Asuint32_t, isp_ext_hw_conf(ha));
 614         readl(isp_ext_hw_conf(ha));
 615         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 616
 617         ql4xxx_unlock_nvram(ha);
 618         ql4xxx_unlock_flash(ha);
 619
 620         return QLA_SUCCESS;
 621 }
 622
 623 /**
 624  * qla4_8xxx_pci_config() - Setup ISP82xx PCI configuration registers.
 625  * @ha: HA context
 626  */
 627 void qla4_8xxx_pci_config(struct scsi_qla_host *ha)
 628 {
 629         pci_set_master(ha->pdev);
 630 }
 631
 632 void qla4xxx_pci_config(struct scsi_qla_host *ha)
 633 {
 634         uint16_t w;
 635         int status;
 636
 637         ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
 638
 639         pci_set_master(ha->pdev);
 640         status = pci_set_mwi(ha->pdev);
 641         /*
 642          * We want to respect framework's setting of PCI configuration space
 643          * command register and also want to make sure that all bits of
 644          * interest to us are properly set in command register.
 645          */
 646         pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
 647         w |= PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
 648         w &= ~PCI_COMMAND_INTX_DISABLE;
 649         pci_write_config_word(ha->pdev, PCI_COMMAND, w);
 650 }
 651
 652 static int qla4xxx_start_firmware_from_flash(struct scsi_qla_host *ha)
 653 {
 654         int status = QLA_ERROR;
 655         unsigned long max_wait_time;
 656         unsigned long flags;
 657         uint32_t mbox_status;
 658
 659         ql4_printk(KERN_INFO, ha, "Starting firmware ...\n");
 660
 661         /*
 662          * Start firmware from flash ROM
 663          *
 664          * WORKAROUND: Stuff a non-constant value that the firmware can
 665          * use as a seed for a random number generator in MB7 prior to
 666          * setting BOOT_ENABLE.  Fixes problem where the TCP
 667          * connections use the same TCP ports after each reboot,
 668          * causing some connections to not get re-established.
 669          */
 670         DEBUG(printk("scsi%d: %s: Start firmware from flash ROM\n",
 671                      ha->host_no, __func__));
 672
 673         spin_lock_irqsave(&ha->hardware_lock, flags);
 674         writel(jiffies, &ha->reg->mailbox[7]);
 675         if (is_qla4022(ha) | is_qla4032(ha))
 676                 writel(set_rmask(NVR_WRITE_ENABLE),
 677                        &ha->reg->u1.isp4022.nvram);
 678
 679         writel(2, &ha->reg->mailbox[6]);
 680         readl(&ha->reg->mailbox[6]);
 681
 682         writel(set_rmask(CSR_BOOT_ENABLE), &ha->reg->ctrl_status);
 683         readl(&ha->reg->ctrl_status);
 684         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 685
 686         /* Wait for firmware to come UP. */
 687         DEBUG2(printk(KERN_INFO "scsi%ld: %s: Wait up to %d seconds for "
 688                       "boot firmware to complete...\n",
 689                       ha->host_no, __func__, FIRMWARE_UP_TOV));
 690         max_wait_time = jiffies + (FIRMWARE_UP_TOV * HZ);
 691         do {
 692                 uint32_t ctrl_status;
 693
 694                 spin_lock_irqsave(&ha->hardware_lock, flags);
 695                 ctrl_status = readw(&ha->reg->ctrl_status);
 696                 mbox_status = readw(&ha->reg->mailbox[0]);
 697                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 698
 699                 if (ctrl_status & set_rmask(CSR_SCSI_PROCESSOR_INTR))
 700                         break;
 701                 if (mbox_status == MBOX_STS_COMMAND_COMPLETE)
 702                         break;
 703
 704                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: Waiting for boot "
 705                     "firmware to complete... ctrl_sts=0x%x, remaining=%ld\n",
 706                     ha->host_no, __func__, ctrl_status, max_wait_time));
 707
 708                 msleep_interruptible(250);
 709         } while (!time_after_eq(jiffies, max_wait_time));
 710
 711         if (mbox_status == MBOX_STS_COMMAND_COMPLETE) {
 712                 DEBUG(printk(KERN_INFO "scsi%ld: %s: Firmware has started\n",
 713                              ha->host_no, __func__));
 714
 715                 spin_lock_irqsave(&ha->hardware_lock, flags);
 716                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
 717                        &ha->reg->ctrl_status);
 718                 readl(&ha->reg->ctrl_status);
 719                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 720
 721                 status = QLA_SUCCESS;
 722         } else {
 723                 printk(KERN_INFO "scsi%ld: %s: Boot firmware failed "
 724                        "-  mbox status 0x%x\n", ha->host_no, __func__,
 725                        mbox_status);
 726                 status = QLA_ERROR;
 727         }
 728         return status;
 729 }
 730
 731 int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
 732 {
 733 #define QL4_LOCK_DRVR_WAIT      60
 734 #define QL4_LOCK_DRVR_SLEEP     1
 735
 736         int drvr_wait = QL4_LOCK_DRVR_WAIT;
 737         while (drvr_wait) {
 738                 if (ql4xxx_lock_drvr(a) == 0) {
 739                         ssleep(QL4_LOCK_DRVR_SLEEP);
 740                         if (drvr_wait) {
 741                                 DEBUG2(printk("scsi%ld: %s: Waiting for "
 742                                               "Global Init Semaphore(%d)...\n",
 743                                               a->host_no,
 744                                               __func__, drvr_wait));
 745                         }
 746                         drvr_wait -= QL4_LOCK_DRVR_SLEEP;
 747                 } else {
 748                         DEBUG2(printk("scsi%ld: %s: Global Init Semaphore "
 749                                       "acquired\n", a->host_no, __func__));
 750                         return QLA_SUCCESS;
 751                 }
 752         }
 753         return QLA_ERROR;
 754 }
 755
 756 /**
 757  * qla4xxx_start_firmware - starts qla4xxx firmware
 758  * @ha: Pointer to host adapter structure.
 759  *
 760  * This routine performs the necessary steps to start the firmware for
 761  * the QLA4010 adapter.
 762  **/
 763 int qla4xxx_start_firmware(struct scsi_qla_host *ha)
 764 {
 765         unsigned long flags = 0;
 766         uint32_t mbox_status;
 767         int status = QLA_ERROR;
 768         int soft_reset = 1;
 769         int config_chip = 0;
 770
 771         if (is_qla4022(ha) | is_qla4032(ha))
 772                 ql4xxx_set_mac_number(ha);
 773
 774         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
 775                 return QLA_ERROR;
 776
 777         spin_lock_irqsave(&ha->hardware_lock, flags);
 778
 779         DEBUG2(printk("scsi%ld: %s: port_ctrl   = 0x%08X\n", ha->host_no,
 780                       __func__, readw(isp_port_ctrl(ha))));
 781         DEBUG(printk("scsi%ld: %s: port_status = 0x%08X\n", ha->host_no,
 782                      __func__, readw(isp_port_status(ha))));
 783
 784         /* Is Hardware already initialized? */
 785         if ((readw(isp_port_ctrl(ha)) & 0x8000) != 0) {
 786                 DEBUG(printk("scsi%ld: %s: Hardware has already been "
 787                              "initialized\n", ha->host_no, __func__));
 788
 789                 /* Receive firmware boot acknowledgement */
 790                 mbox_status = readw(&ha->reg->mailbox[0]);
 791
 792                 DEBUG2(printk("scsi%ld: %s: H/W Config complete - mbox[0]= "
 793                               "0x%x\n", ha->host_no, __func__, mbox_status));
 794
 795                 /* Is firmware already booted? */
 796                 if (mbox_status == 0) {
 797                         /* F/W not running, must be config by net driver */
 798                         config_chip = 1;
 799                         soft_reset = 0;
 800                 } else {
 801                         writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
 802                                &ha->reg->ctrl_status);
 803                         readl(&ha->reg->ctrl_status);
 804                         writel(set_rmask(CSR_SCSI_COMPLETION_INTR),
 805                                &ha->reg->ctrl_status);
 806                         readl(&ha->reg->ctrl_status);
 807                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 808                         if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
 809                                 DEBUG2(printk("scsi%ld: %s: Get firmware "
 810                                               "state -- state = 0x%x\n",
 811                                               ha->host_no,
 812                                               __func__, ha->firmware_state));
 813                                 /* F/W is running */
 814                                 if (ha->firmware_state &
 815                                     FW_STATE_CONFIG_WAIT) {
 816                                         DEBUG2(printk("scsi%ld: %s: Firmware "
 817                                                       "in known state -- "
 818                                                       "config and "
 819                                                       "boot, state = 0x%x\n",
 820                                                       ha->host_no, __func__,
 821                                                       ha->firmware_state));
 822                                         config_chip = 1;
 823                                         soft_reset = 0;
 824                                 }
 825                         } else {
 826                                 DEBUG2(printk("scsi%ld: %s: Firmware in "
 827                                               "unknown state -- resetting,"
 828                                               " state = "
 829                                               "0x%x\n", ha->host_no, __func__,
 830                                               ha->firmware_state));
 831                         }
 832                         spin_lock_irqsave(&ha->hardware_lock, flags);
 833                 }
 834         } else {
 835                 DEBUG(printk("scsi%ld: %s: H/W initialization hasn't been "
 836                              "started - resetting\n", ha->host_no, __func__));
 837         }
 838         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 839
 840         DEBUG(printk("scsi%ld: %s: Flags soft_rest=%d, config= %d\n ",
 841                      ha->host_no, __func__, soft_reset, config_chip));
 842         if (soft_reset) {
 843                 DEBUG(printk("scsi%ld: %s: Issue Soft Reset\n", ha->host_no,
 844                              __func__));
 845                 status = qla4xxx_soft_reset(ha);        /* NOTE: acquires drvr
 846                                                          * lock again, but ok */
 847                 if (status == QLA_ERROR) {
 848                         DEBUG(printk("scsi%d: %s: Soft Reset failed!\n",
 849                                      ha->host_no, __func__));
 850                         ql4xxx_unlock_drvr(ha);
 851                         return QLA_ERROR;
 852                 }
 853                 config_chip = 1;
 854
 855                 /* Reset clears the semaphore, so acquire again */
 856                 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
 857                         return QLA_ERROR;
 858         }
 859
 860         if (config_chip) {
 861                 if ((status = qla4xxx_config_nvram(ha)) == QLA_SUCCESS)
 862                         status = qla4xxx_start_firmware_from_flash(ha);
 863         }
 864
 865         ql4xxx_unlock_drvr(ha);
 866         if (status == QLA_SUCCESS) {
 867                 if (test_and_clear_bit(AF_GET_CRASH_RECORD, &ha->flags))
 868                         qla4xxx_get_crash_record(ha);
 869         } else {
 870                 DEBUG(printk("scsi%ld: %s: Firmware has NOT started\n",
 871                              ha->host_no, __func__));
 872         }
 873         return status;
 874 }
 875 /**
 876  * qla4xxx_free_ddb_index - Free DDBs reserved by firmware
 877  * @ha: pointer to adapter structure
 878  *
 879  * Since firmware is not running in autoconnect mode the DDB indices should
 880  * be freed so that when login happens from user space there are free DDB
 881  * indices available.
 882  **/
 883 void qla4xxx_free_ddb_index(struct scsi_qla_host *ha)
 884 {
 885         int max_ddbs;
 886         int ret;
 887         uint32_t idx = 0, next_idx = 0;
 888         uint32_t state = 0, conn_err = 0;
 889
 890         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
 891                                      MAX_DEV_DB_ENTRIES;
 892
 893         for (idx = 0; idx < max_ddbs; idx = next_idx) {
 894                 ret = qla4xxx_get_fwddb_entry(ha, idx, NULL, 0, NULL,
 895                                               &next_idx, &state, &conn_err,
 896                                                 NULL, NULL);
 897                 if (ret == QLA_ERROR) {
 898                         next_idx++;
 899                         continue;
 900                 }
 901                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
 902                     state == DDB_DS_SESSION_FAILED) {
 903                         DEBUG2(ql4_printk(KERN_INFO, ha,
 904                                           "Freeing DDB index = 0x%x\n", idx));
 905                         ret = qla4xxx_clear_ddb_entry(ha, idx);
 906                         if (ret == QLA_ERROR)
 907                                 ql4_printk(KERN_ERR, ha,
 908                                            "Unable to clear DDB index = "
 909                                            "0x%x\n", idx);
 910                 }
 911                 if (next_idx == 0)
 912                         break;
 913         }
 914 }
 915
 916 /**
 917  * qla4xxx_initialize_adapter - initiailizes hba
 918  * @ha: Pointer to host adapter structure.
 919  *
 920  * This routine parforms all of the steps necessary to initialize the adapter.
 921  *
 922  **/
 923 int qla4xxx_initialize_adapter(struct scsi_qla_host *ha, int is_reset)
 924 {
 925         int status = QLA_ERROR;
 926
 927         ha->eeprom_cmd_data = 0;
 928
 929         ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
 930         ha->isp_ops->pci_config(ha);
 931
 932         ha->isp_ops->disable_intrs(ha);
 933
 934         /* Initialize the Host adapter request/response queues and firmware */
 935         if (ha->isp_ops->start_firmware(ha) == QLA_ERROR)
 936                 goto exit_init_hba;
 937
 938         if (qla4xxx_about_firmware(ha) == QLA_ERROR)
 939                 goto exit_init_hba;
 940
 941         if (ha->isp_ops->get_sys_info(ha) == QLA_ERROR)
 942                 goto exit_init_hba;
 943
 944         if (qla4xxx_init_local_data(ha) == QLA_ERROR)
 945                 goto exit_init_hba;
 946
 947         status = qla4xxx_init_firmware(ha);
 948         if (status == QLA_ERROR)
 949                 goto exit_init_hba;
 950
 951         if (is_reset == RESET_ADAPTER)
 952                 qla4xxx_build_ddb_list(ha, is_reset);
 953
 954         set_bit(AF_ONLINE, &ha->flags);
 955 exit_init_hba:
 956         if (is_qla80XX(ha) && (status == QLA_ERROR)) {
 957                 /* Since interrupts are registered in start_firmware for
 958                  * 80XX, release them here if initialize_adapter fails */
 959                 qla4xxx_free_irqs(ha);
 960         }
 961
 962         DEBUG2(printk("scsi%ld: initialize adapter: %s\n", ha->host_no,
 963             status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
 964         return status;
 965 }
 966
 967 int qla4xxx_ddb_change(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
 968                        struct ddb_entry *ddb_entry, uint32_t state)
 969 {
 970         uint32_t old_fw_ddb_device_state;
 971         int status = QLA_ERROR;
 972
 973         old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
 974         DEBUG2(ql4_printk(KERN_INFO, ha,
 975                           "%s: DDB - old state = 0x%x, new state = 0x%x for "
 976                           "index [%d]\n", __func__,
 977                           ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
 978
 979         ddb_entry->fw_ddb_device_state = state;
 980
 981         switch (old_fw_ddb_device_state) {
 982         case DDB_DS_LOGIN_IN_PROCESS:
 983                 switch (state) {
 984                 case DDB_DS_SESSION_ACTIVE:
 985                 case DDB_DS_DISCOVERY:
 986                         qla4xxx_update_session_conn_param(ha, ddb_entry);
 987                         ddb_entry->unblock_sess(ddb_entry->sess);
 988                         status = QLA_SUCCESS;
 989                         break;
 990                 case DDB_DS_SESSION_FAILED:
 991                 case DDB_DS_NO_CONNECTION_ACTIVE:
 992                         iscsi_conn_login_event(ddb_entry->conn,
 993                                                ISCSI_CONN_STATE_FREE);
 994                         status = QLA_SUCCESS;
 995                         break;
 996                 }
 997                 break;
 998         case DDB_DS_SESSION_ACTIVE:
 999         case DDB_DS_DISCOVERY:
1000                 switch (state) {
1001                 case DDB_DS_SESSION_FAILED:
1002                         /*
1003                          * iscsi_session failure  will cause userspace to
1004                          * stop the connection which in turn would block the
1005                          * iscsi_session and start relogin
1006                          */
1007                         iscsi_session_failure(ddb_entry->sess->dd_data,
1008                                               ISCSI_ERR_CONN_FAILED);
1009                         status = QLA_SUCCESS;
1010                         break;
1011                 case DDB_DS_NO_CONNECTION_ACTIVE:
1012                         clear_bit(fw_ddb_index, ha->ddb_idx_map);
1013                         status = QLA_SUCCESS;
1014                         break;
1015                 }
1016                 break;
1017         case DDB_DS_SESSION_FAILED:
1018                 switch (state) {
1019                 case DDB_DS_SESSION_ACTIVE:
1020                 case DDB_DS_DISCOVERY:
1021                         ddb_entry->unblock_sess(ddb_entry->sess);
1022                         qla4xxx_update_session_conn_param(ha, ddb_entry);
1023                         status = QLA_SUCCESS;
1024                         break;
1025                 case DDB_DS_SESSION_FAILED:
1026                         iscsi_session_failure(ddb_entry->sess->dd_data,
1027                                               ISCSI_ERR_CONN_FAILED);
1028                         status = QLA_SUCCESS;
1029                         break;
1030                 }
1031                 break;
1032         default:
1033                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unknown Event\n",
1034                                 __func__));
1035                 break;
1036         }
1037         return status;
1038 }
1039
1040 void qla4xxx_arm_relogin_timer(struct ddb_entry *ddb_entry)
1041 {
1042         /*
1043          * This triggers a relogin.  After the relogin_timer
1044          * expires, the relogin gets scheduled.  We must wait a
1045          * minimum amount of time since receiving an 0x8014 AEN
1046          * with failed device_state or a logout response before
1047          * we can issue another relogin.
1048          *
1049          * Firmware pads this timeout: (time2wait +1).
1050          * Driver retry to login should be longer than F/W.
1051          * Otherwise F/W will fail
1052          * set_ddb() mbx cmd with 0x4005 since it still
1053          * counting down its time2wait.
1054          */
1055         atomic_set(&ddb_entry->relogin_timer, 0);
1056         atomic_set(&ddb_entry->retry_relogin_timer,
1057                    ddb_entry->default_time2wait + 4);
1058
1059 }
1060
1061 int qla4xxx_flash_ddb_change(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
1062                              struct ddb_entry *ddb_entry, uint32_t state)
1063 {
1064         uint32_t old_fw_ddb_device_state;
1065         int status = QLA_ERROR;
1066
1067         old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
1068         DEBUG2(ql4_printk(KERN_INFO, ha,
1069                           "%s: DDB - old state = 0x%x, new state = 0x%x for "
1070                           "index [%d]\n", __func__,
1071                           ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
1072
1073         ddb_entry->fw_ddb_device_state = state;
1074
1075         switch (old_fw_ddb_device_state) {
1076         case DDB_DS_LOGIN_IN_PROCESS:
1077         case DDB_DS_NO_CONNECTION_ACTIVE:
1078                 switch (state) {
1079                 case DDB_DS_SESSION_ACTIVE:
1080                         ddb_entry->unblock_sess(ddb_entry->sess);
1081                         qla4xxx_update_session_conn_fwddb_param(ha, ddb_entry);
1082                         status = QLA_SUCCESS;
1083                         break;
1084                 case DDB_DS_SESSION_FAILED:
1085                         iscsi_block_session(ddb_entry->sess);
1086                         if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
1087                                 qla4xxx_arm_relogin_timer(ddb_entry);
1088                         status = QLA_SUCCESS;
1089                         break;
1090                 }
1091                 break;
1092         case DDB_DS_SESSION_ACTIVE:
1093                 switch (state) {
1094                 case DDB_DS_SESSION_FAILED:
1095                         iscsi_block_session(ddb_entry->sess);
1096                         if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
1097                                 qla4xxx_arm_relogin_timer(ddb_entry);
1098                         status = QLA_SUCCESS;
1099                         break;
1100                 }
1101                 break;
1102         case DDB_DS_SESSION_FAILED:
1103                 switch (state) {
1104                 case DDB_DS_SESSION_ACTIVE:
1105                         ddb_entry->unblock_sess(ddb_entry->sess);
1106                         qla4xxx_update_session_conn_fwddb_param(ha, ddb_entry);
1107                         status = QLA_SUCCESS;
1108                         break;
1109                 case DDB_DS_SESSION_FAILED:
1110                         if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
1111                                 qla4xxx_arm_relogin_timer(ddb_entry);
1112                         status = QLA_SUCCESS;
1113                         break;
1114                 }
1115                 break;
1116         default:
1117                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unknown Event\n",
1118                                   __func__));
1119                 break;
1120         }
1121         return status;
1122 }
1123
1124 /**
1125  * qla4xxx_process_ddb_changed - process ddb state change
1126  * @ha - Pointer to host adapter structure.
1127  * @fw_ddb_index - Firmware's device database index
1128  * @state - Device state
1129  *
1130  * This routine processes a Decive Database Changed AEN Event.
1131  **/
1132 int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha,
1133                                 uint32_t fw_ddb_index,
1134                                 uint32_t state, uint32_t conn_err)
1135 {
1136         struct ddb_entry *ddb_entry;
1137         int status = QLA_ERROR;
1138
1139         /* check for out of range index */
1140         if (fw_ddb_index >= MAX_DDB_ENTRIES)
1141                 goto exit_ddb_event;
1142
1143         /* Get the corresponging ddb entry */
1144         ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
1145         /* Device does not currently exist in our database. */
1146         if (ddb_entry == NULL) {
1147                 ql4_printk(KERN_ERR, ha, "%s: No ddb_entry at FW index [%d]\n",
1148                            __func__, fw_ddb_index);
1149
1150                 if (state == DDB_DS_NO_CONNECTION_ACTIVE)
1151                         clear_bit(fw_ddb_index, ha->ddb_idx_map);
1152
1153                 goto exit_ddb_event;
1154         }
1155
1156         ddb_entry->ddb_change(ha, fw_ddb_index, ddb_entry, state);
1157
1158 exit_ddb_event:
1159         return status;
1160 }
1161
1162 /**
1163  * qla4xxx_login_flash_ddb - Login to target (DDB)
1164  * @cls_session: Pointer to the session to login
1165  *
1166  * This routine logins to the target.
1167  * Issues setddb and conn open mbx
1168  **/
1169 void qla4xxx_login_flash_ddb(struct iscsi_cls_session *cls_session)
1170 {
1171         struct iscsi_session *sess;
1172         struct ddb_entry *ddb_entry;
1173         struct scsi_qla_host *ha;
1174         struct dev_db_entry *fw_ddb_entry = NULL;
1175         dma_addr_t fw_ddb_dma;
1176         uint32_t mbx_sts = 0;
1177         int ret;
1178
1179         sess = cls_session->dd_data;
1180         ddb_entry = sess->dd_data;
1181         ha =  ddb_entry->ha;
1182
1183         if (!test_bit(AF_LINK_UP, &ha->flags))
1184                 return;
1185
1186         if (ddb_entry->ddb_type != FLASH_DDB) {
1187                 DEBUG2(ql4_printk(KERN_INFO, ha,
1188                                   "Skipping login to non FLASH DB"));
1189                 goto exit_login;
1190         }
1191
1192         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
1193                                       &fw_ddb_dma);
1194         if (fw_ddb_entry == NULL) {
1195                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
1196                 goto exit_login;
1197         }
1198
1199         if (ddb_entry->fw_ddb_index == INVALID_ENTRY) {
1200                 ret = qla4xxx_get_ddb_index(ha, &ddb_entry->fw_ddb_index);
1201                 if (ret == QLA_ERROR)
1202                         goto exit_login;
1203
1204                 ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
1205                 ha->tot_ddbs++;
1206         }
1207
1208         memcpy(fw_ddb_entry, &ddb_entry->fw_ddb_entry,
1209                sizeof(struct dev_db_entry));
1210         ddb_entry->sess->target_id = ddb_entry->fw_ddb_index;
1211
1212         ret = qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index,
1213                                     fw_ddb_dma, &mbx_sts);
1214         if (ret == QLA_ERROR) {
1215                 DEBUG2(ql4_printk(KERN_ERR, ha, "Set DDB failed\n"));
1216                 goto exit_login;
1217         }
1218
1219         ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
1220         ret = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
1221         if (ret == QLA_ERROR) {
1222                 ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
1223                            sess->targetname);
1224                 goto exit_login;
1225         }
1226
1227 exit_login:
1228         if (fw_ddb_entry)
1229                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
1230 }
1231