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 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 /**
 286  * qla4xxx_alloc_fw_dump - Allocate memory for minidump data.
 287  * @ha: pointer to host adapter structure.
 288  **/
 289 void qla4xxx_alloc_fw_dump(struct scsi_qla_host *ha)
 290 {
 291         int status;
 292         uint32_t capture_debug_level;
 293         int hdr_entry_bit, k;
 294         void *md_tmp;
 295         dma_addr_t md_tmp_dma;
 296         struct qla4_8xxx_minidump_template_hdr *md_hdr;
 297
 298         if (ha->fw_dump) {
 299                 ql4_printk(KERN_WARNING, ha,
 300                            "Firmware dump previously allocated.\n");
 301                 return;
 302         }
 303
 304         status = qla4xxx_req_template_size(ha);
 305         if (status != QLA_SUCCESS) {
 306                 ql4_printk(KERN_INFO, ha,
 307                            "scsi%ld: Failed to get template size\n",
 308                            ha->host_no);
 309                 return;
 310         }
 311
 312         clear_bit(AF_82XX_FW_DUMPED, &ha->flags);
 313
 314         /* Allocate memory for saving the template */
 315         md_tmp = dma_alloc_coherent(&ha->pdev->dev, ha->fw_dump_tmplt_size,
 316                                     &md_tmp_dma, GFP_KERNEL);
 317
 318         /* Request template */
 319         status =  qla4xxx_get_minidump_template(ha, md_tmp_dma);
 320         if (status != QLA_SUCCESS) {
 321                 ql4_printk(KERN_INFO, ha,
 322                            "scsi%ld: Failed to get minidump template\n",
 323                            ha->host_no);
 324                 goto alloc_cleanup;
 325         }
 326
 327         md_hdr = (struct qla4_8xxx_minidump_template_hdr *)md_tmp;
 328
 329         capture_debug_level = md_hdr->capture_debug_level;
 330
 331         /* Get capture mask based on module loadtime setting. */
 332         if (ql4xmdcapmask >= 0x3 && ql4xmdcapmask <= 0x7F)
 333                 ha->fw_dump_capture_mask = ql4xmdcapmask;
 334         else
 335                 ha->fw_dump_capture_mask = capture_debug_level;
 336
 337         md_hdr->driver_capture_mask = ha->fw_dump_capture_mask;
 338
 339         DEBUG2(ql4_printk(KERN_INFO, ha, "Minimum num of entries = %d\n",
 340                           md_hdr->num_of_entries));
 341         DEBUG2(ql4_printk(KERN_INFO, ha, "Dump template size  = %d\n",
 342                           ha->fw_dump_tmplt_size));
 343         DEBUG2(ql4_printk(KERN_INFO, ha, "Selected Capture mask =0x%x\n",
 344                           ha->fw_dump_capture_mask));
 345
 346         /* Calculate fw_dump_size */
 347         for (hdr_entry_bit = 0x2, k = 1; (hdr_entry_bit & 0xFF);
 348              hdr_entry_bit <<= 1, k++) {
 349                 if (hdr_entry_bit & ha->fw_dump_capture_mask)
 350                         ha->fw_dump_size += md_hdr->capture_size_array[k];
 351         }
 352
 353         /* Total firmware dump size including command header */
 354         ha->fw_dump_size += ha->fw_dump_tmplt_size;
 355         ha->fw_dump = vmalloc(ha->fw_dump_size);
 356         if (!ha->fw_dump)
 357                 goto alloc_cleanup;
 358
 359         DEBUG2(ql4_printk(KERN_INFO, ha,
 360                           "Minidump Tempalate Size = 0x%x KB\n",
 361                           ha->fw_dump_tmplt_size));
 362         DEBUG2(ql4_printk(KERN_INFO, ha,
 363                           "Total Minidump size = 0x%x KB\n", ha->fw_dump_size));
 364
 365         memcpy(ha->fw_dump, md_tmp, ha->fw_dump_tmplt_size);
 366         ha->fw_dump_tmplt_hdr = ha->fw_dump;
 367
 368 alloc_cleanup:
 369         dma_free_coherent(&ha->pdev->dev, ha->fw_dump_tmplt_size,
 370                           md_tmp, md_tmp_dma);
 371 }
 372
 373 static int qla4xxx_fw_ready(struct scsi_qla_host *ha)
 374 {
 375         uint32_t timeout_count;
 376         int ready = 0;
 377
 378         DEBUG2(ql4_printk(KERN_INFO, ha, "Waiting for Firmware Ready..\n"));
 379         for (timeout_count = ADAPTER_INIT_TOV; timeout_count > 0;
 380              timeout_count--) {
 381                 if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
 382                         qla4xxx_get_dhcp_ip_address(ha);
 383
 384                 /* Get firmware state. */
 385                 if (qla4xxx_get_firmware_state(ha) != QLA_SUCCESS) {
 386                         DEBUG2(printk("scsi%ld: %s: unable to get firmware "
 387                                       "state\n", ha->host_no, __func__));
 388                         break;
 389                 }
 390
 391                 if (ha->firmware_state & FW_STATE_ERROR) {
 392                         DEBUG2(printk("scsi%ld: %s: an unrecoverable error has"
 393                                       " occurred\n", ha->host_no, __func__));
 394                         break;
 395
 396                 }
 397                 if (ha->firmware_state & FW_STATE_CONFIG_WAIT) {
 398                         /*
 399                          * The firmware has not yet been issued an Initialize
 400                          * Firmware command, so issue it now.
 401                          */
 402                         if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR)
 403                                 break;
 404
 405                         /* Go back and test for ready state - no wait. */
 406                         continue;
 407                 }
 408
 409                 if (ha->firmware_state & FW_STATE_WAIT_AUTOCONNECT) {
 410                         DEBUG2(printk(KERN_INFO "scsi%ld: %s: fwstate:"
 411                                       "AUTOCONNECT in progress\n",
 412                                       ha->host_no, __func__));
 413                 }
 414
 415                 if (ha->firmware_state & FW_STATE_CONFIGURING_IP) {
 416                         DEBUG2(printk(KERN_INFO "scsi%ld: %s: fwstate:"
 417                                       " CONFIGURING IP\n",
 418                                       ha->host_no, __func__));
 419                         /*
 420                          * Check for link state after 15 secs and if link is
 421                          * still DOWN then, cable is unplugged. Ignore "DHCP
 422                          * in Progress/CONFIGURING IP" bit to check if firmware
 423                          * is in ready state or not after 15 secs.
 424                          * This is applicable for both 2.x & 3.x firmware
 425                          */
 426                         if (timeout_count <= (ADAPTER_INIT_TOV - 15)) {
 427                                 if (ha->addl_fw_state & FW_ADDSTATE_LINK_UP) {
 428                                         DEBUG2(printk(KERN_INFO "scsi%ld: %s:"
 429                                                   " LINK UP (Cable plugged)\n",
 430                                                   ha->host_no, __func__));
 431                                 } else if (ha->firmware_state &
 432                                           (FW_STATE_CONFIGURING_IP |
 433                                                              FW_STATE_READY)) {
 434                                         DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
 435                                                 "LINK DOWN (Cable unplugged)\n",
 436                                                 ha->host_no, __func__));
 437                                         ha->firmware_state = FW_STATE_READY;
 438                                 }
 439                         }
 440                 }
 441
 442                 if (ha->firmware_state == FW_STATE_READY) {
 443                         /* If DHCP IP Addr is available, retrieve it now. */
 444                         if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR,
 445                                                                 &ha->dpc_flags))
 446                                 qla4xxx_get_dhcp_ip_address(ha);
 447
 448                         if (!qla4xxx_wait_for_ip_config(ha) ||
 449                                                         timeout_count == 1) {
 450                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 451                                     "Firmware Ready..\n"));
 452                                 /* The firmware is ready to process SCSI
 453                                    commands. */
 454                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 455                                         "scsi%ld: %s: MEDIA TYPE"
 456                                         " - %s\n", ha->host_no,
 457                                         __func__, (ha->addl_fw_state &
 458                                         FW_ADDSTATE_OPTICAL_MEDIA)
 459                                         != 0 ? "OPTICAL" : "COPPER"));
 460                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 461                                         "scsi%ld: %s: DHCPv4 STATE"
 462                                         " Enabled %s\n", ha->host_no,
 463                                          __func__, (ha->addl_fw_state &
 464                                          FW_ADDSTATE_DHCPv4_ENABLED) != 0 ?
 465                                         "YES" : "NO"));
 466                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 467                                         "scsi%ld: %s: LINK %s\n",
 468                                         ha->host_no, __func__,
 469                                         (ha->addl_fw_state &
 470                                          FW_ADDSTATE_LINK_UP) != 0 ?
 471                                         "UP" : "DOWN"));
 472                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 473                                         "scsi%ld: %s: iSNS Service "
 474                                         "Started %s\n",
 475                                         ha->host_no, __func__,
 476                                         (ha->addl_fw_state &
 477                                          FW_ADDSTATE_ISNS_SVC_ENABLED) != 0 ?
 478                                         "YES" : "NO"));
 479
 480                                 ready = 1;
 481                                 break;
 482                         }
 483                 }
 484                 DEBUG2(printk("scsi%ld: %s: waiting on fw, state=%x:%x - "
 485                               "seconds expired= %d\n", ha->host_no, __func__,
 486                               ha->firmware_state, ha->addl_fw_state,
 487                               timeout_count));
 488                 if (is_qla4032(ha) &&
 489                         !(ha->addl_fw_state & FW_ADDSTATE_LINK_UP) &&
 490                         (timeout_count < ADAPTER_INIT_TOV - 5)) {
 491                         break;
 492                 }
 493
 494                 msleep(1000);
 495         }                       /* end of for */
 496
 497         if (timeout_count <= 0)
 498                 DEBUG2(printk("scsi%ld: %s: FW Initialization timed out!\n",
 499                               ha->host_no, __func__));
 500
 501         if (ha->firmware_state & FW_STATE_CONFIGURING_IP) {
 502                 DEBUG2(printk("scsi%ld: %s: FW initialized, but is reporting "
 503                               "it's waiting to configure an IP address\n",
 504                                ha->host_no, __func__));
 505                 ready = 1;
 506         } else if (ha->firmware_state & FW_STATE_WAIT_AUTOCONNECT) {
 507                 DEBUG2(printk("scsi%ld: %s: FW initialized, but "
 508                               "auto-discovery still in process\n",
 509                                ha->host_no, __func__));
 510                 ready = 1;
 511         }
 512
 513         return ready;
 514 }
 515
 516 /**
 517  * qla4xxx_init_firmware - initializes the firmware.
 518  * @ha: pointer to host adapter structure.
 519  *
 520  **/
 521 static int qla4xxx_init_firmware(struct scsi_qla_host *ha)
 522 {
 523         int status = QLA_ERROR;
 524
 525         if (is_aer_supported(ha) &&
 526             test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
 527                 return status;
 528
 529         /* For 82xx, stop firmware before initializing because if BIOS
 530          * has previously initialized firmware, then driver's initialize
 531          * firmware will fail. */
 532         if (is_qla80XX(ha))
 533                 qla4_8xxx_stop_firmware(ha);
 534
 535         ql4_printk(KERN_INFO, ha, "Initializing firmware..\n");
 536         if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR) {
 537                 DEBUG2(printk("scsi%ld: %s: Failed to initialize firmware "
 538                               "control block\n", ha->host_no, __func__));
 539                 return status;
 540         }
 541
 542         if (!qla4xxx_fw_ready(ha))
 543                 return status;
 544
 545         if (is_qla80XX(ha) && !test_bit(AF_INIT_DONE, &ha->flags))
 546                 qla4xxx_alloc_fw_dump(ha);
 547
 548         return qla4xxx_get_firmware_status(ha);
 549 }
 550
 551 static void qla4xxx_set_model_info(struct scsi_qla_host *ha)
 552 {
 553         uint16_t board_id_string[8];
 554         int i;
 555         int size = sizeof(ha->nvram->isp4022.boardIdStr);
 556         int offset = offsetof(struct eeprom_data, isp4022.boardIdStr) / 2;
 557
 558         for (i = 0; i < (size / 2) ; i++) {
 559                 board_id_string[i] = rd_nvram_word(ha, offset);
 560                 offset += 1;
 561         }
 562
 563         memcpy(ha->model_name, board_id_string, size);
 564 }
 565
 566 static int qla4xxx_config_nvram(struct scsi_qla_host *ha)
 567 {
 568         unsigned long flags;
 569         union external_hw_config_reg extHwConfig;
 570
 571         DEBUG2(printk("scsi%ld: %s: Get EEProm parameters \n", ha->host_no,
 572                       __func__));
 573         if (ql4xxx_lock_flash(ha) != QLA_SUCCESS)
 574                 return QLA_ERROR;
 575         if (ql4xxx_lock_nvram(ha) != QLA_SUCCESS) {
 576                 ql4xxx_unlock_flash(ha);
 577                 return QLA_ERROR;
 578         }
 579
 580         /* Get EEPRom Parameters from NVRAM and validate */
 581         ql4_printk(KERN_INFO, ha, "Configuring NVRAM ...\n");
 582         if (qla4xxx_is_nvram_configuration_valid(ha) == QLA_SUCCESS) {
 583                 spin_lock_irqsave(&ha->hardware_lock, flags);
 584                 extHwConfig.Asuint32_t =
 585                         rd_nvram_word(ha, eeprom_ext_hw_conf_offset(ha));
 586                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 587         } else {
 588                 ql4_printk(KERN_WARNING, ha,
 589                     "scsi%ld: %s: EEProm checksum invalid.  "
 590                     "Please update your EEPROM\n", ha->host_no,
 591                     __func__);
 592
 593                 /* Attempt to set defaults */
 594                 if (is_qla4010(ha))
 595                         extHwConfig.Asuint32_t = 0x1912;
 596                 else if (is_qla4022(ha) | is_qla4032(ha))
 597                         extHwConfig.Asuint32_t = 0x0023;
 598                 else
 599                         return QLA_ERROR;
 600         }
 601
 602         if (is_qla4022(ha) || is_qla4032(ha))
 603                 qla4xxx_set_model_info(ha);
 604         else
 605                 strcpy(ha->model_name, "QLA4010");
 606
 607         DEBUG(printk("scsi%ld: %s: Setting extHwConfig to 0xFFFF%04x\n",
 608                      ha->host_no, __func__, extHwConfig.Asuint32_t));
 609
 610         spin_lock_irqsave(&ha->hardware_lock, flags);
 611         writel((0xFFFF << 16) | extHwConfig.Asuint32_t, isp_ext_hw_conf(ha));
 612         readl(isp_ext_hw_conf(ha));
 613         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 614
 615         ql4xxx_unlock_nvram(ha);
 616         ql4xxx_unlock_flash(ha);
 617
 618         return QLA_SUCCESS;
 619 }
 620
 621 /**
 622  * qla4_8xxx_pci_config() - Setup ISP82xx PCI configuration registers.
 623  * @ha: HA context
 624  */
 625 void qla4_8xxx_pci_config(struct scsi_qla_host *ha)
 626 {
 627         pci_set_master(ha->pdev);
 628 }
 629
 630 void qla4xxx_pci_config(struct scsi_qla_host *ha)
 631 {
 632         uint16_t w;
 633         int status;
 634
 635         ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
 636
 637         pci_set_master(ha->pdev);
 638         status = pci_set_mwi(ha->pdev);
 639         /*
 640          * We want to respect framework's setting of PCI configuration space
 641          * command register and also want to make sure that all bits of
 642          * interest to us are properly set in command register.
 643          */
 644         pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
 645         w |= PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
 646         w &= ~PCI_COMMAND_INTX_DISABLE;
 647         pci_write_config_word(ha->pdev, PCI_COMMAND, w);
 648 }
 649
 650 static int qla4xxx_start_firmware_from_flash(struct scsi_qla_host *ha)
 651 {
 652         int status = QLA_ERROR;
 653         unsigned long max_wait_time;
 654         unsigned long flags;
 655         uint32_t mbox_status;
 656
 657         ql4_printk(KERN_INFO, ha, "Starting firmware ...\n");
 658
 659         /*
 660          * Start firmware from flash ROM
 661          *
 662          * WORKAROUND: Stuff a non-constant value that the firmware can
 663          * use as a seed for a random number generator in MB7 prior to
 664          * setting BOOT_ENABLE.  Fixes problem where the TCP
 665          * connections use the same TCP ports after each reboot,
 666          * causing some connections to not get re-established.
 667          */
 668         DEBUG(printk("scsi%d: %s: Start firmware from flash ROM\n",
 669                      ha->host_no, __func__));
 670
 671         spin_lock_irqsave(&ha->hardware_lock, flags);
 672         writel(jiffies, &ha->reg->mailbox[7]);
 673         if (is_qla4022(ha) | is_qla4032(ha))
 674                 writel(set_rmask(NVR_WRITE_ENABLE),
 675                        &ha->reg->u1.isp4022.nvram);
 676
 677         writel(2, &ha->reg->mailbox[6]);
 678         readl(&ha->reg->mailbox[6]);
 679
 680         writel(set_rmask(CSR_BOOT_ENABLE), &ha->reg->ctrl_status);
 681         readl(&ha->reg->ctrl_status);
 682         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 683
 684         /* Wait for firmware to come UP. */
 685         DEBUG2(printk(KERN_INFO "scsi%ld: %s: Wait up to %d seconds for "
 686                       "boot firmware to complete...\n",
 687                       ha->host_no, __func__, FIRMWARE_UP_TOV));
 688         max_wait_time = jiffies + (FIRMWARE_UP_TOV * HZ);
 689         do {
 690                 uint32_t ctrl_status;
 691
 692                 spin_lock_irqsave(&ha->hardware_lock, flags);
 693                 ctrl_status = readw(&ha->reg->ctrl_status);
 694                 mbox_status = readw(&ha->reg->mailbox[0]);
 695                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 696
 697                 if (ctrl_status & set_rmask(CSR_SCSI_PROCESSOR_INTR))
 698                         break;
 699                 if (mbox_status == MBOX_STS_COMMAND_COMPLETE)
 700                         break;
 701
 702                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: Waiting for boot "
 703                     "firmware to complete... ctrl_sts=0x%x, remaining=%ld\n",
 704                     ha->host_no, __func__, ctrl_status, max_wait_time));
 705
 706                 msleep_interruptible(250);
 707         } while (!time_after_eq(jiffies, max_wait_time));
 708
 709         if (mbox_status == MBOX_STS_COMMAND_COMPLETE) {
 710                 DEBUG(printk(KERN_INFO "scsi%ld: %s: Firmware has started\n",
 711                              ha->host_no, __func__));
 712
 713                 spin_lock_irqsave(&ha->hardware_lock, flags);
 714                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
 715                        &ha->reg->ctrl_status);
 716                 readl(&ha->reg->ctrl_status);
 717                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 718
 719                 status = QLA_SUCCESS;
 720         } else {
 721                 printk(KERN_INFO "scsi%ld: %s: Boot firmware failed "
 722                        "-  mbox status 0x%x\n", ha->host_no, __func__,
 723                        mbox_status);
 724                 status = QLA_ERROR;
 725         }
 726         return status;
 727 }
 728
 729 int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
 730 {
 731 #define QL4_LOCK_DRVR_WAIT      60
 732 #define QL4_LOCK_DRVR_SLEEP     1
 733
 734         int drvr_wait = QL4_LOCK_DRVR_WAIT;
 735         while (drvr_wait) {
 736                 if (ql4xxx_lock_drvr(a) == 0) {
 737                         ssleep(QL4_LOCK_DRVR_SLEEP);
 738                         if (drvr_wait) {
 739                                 DEBUG2(printk("scsi%ld: %s: Waiting for "
 740                                               "Global Init Semaphore(%d)...\n",
 741                                               a->host_no,
 742                                               __func__, drvr_wait));
 743                         }
 744                         drvr_wait -= QL4_LOCK_DRVR_SLEEP;
 745                 } else {
 746                         DEBUG2(printk("scsi%ld: %s: Global Init Semaphore "
 747                                       "acquired\n", a->host_no, __func__));
 748                         return QLA_SUCCESS;
 749                 }
 750         }
 751         return QLA_ERROR;
 752 }
 753
 754 /**
 755  * qla4xxx_start_firmware - starts qla4xxx firmware
 756  * @ha: Pointer to host adapter structure.
 757  *
 758  * This routine performs the necessary steps to start the firmware for
 759  * the QLA4010 adapter.
 760  **/
 761 int qla4xxx_start_firmware(struct scsi_qla_host *ha)
 762 {
 763         unsigned long flags = 0;
 764         uint32_t mbox_status;
 765         int status = QLA_ERROR;
 766         int soft_reset = 1;
 767         int config_chip = 0;
 768
 769         if (is_qla4022(ha) | is_qla4032(ha))
 770                 ql4xxx_set_mac_number(ha);
 771
 772         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
 773                 return QLA_ERROR;
 774
 775         spin_lock_irqsave(&ha->hardware_lock, flags);
 776
 777         DEBUG2(printk("scsi%ld: %s: port_ctrl   = 0x%08X\n", ha->host_no,
 778                       __func__, readw(isp_port_ctrl(ha))));
 779         DEBUG(printk("scsi%ld: %s: port_status = 0x%08X\n", ha->host_no,
 780                      __func__, readw(isp_port_status(ha))));
 781
 782         /* Is Hardware already initialized? */
 783         if ((readw(isp_port_ctrl(ha)) & 0x8000) != 0) {
 784                 DEBUG(printk("scsi%ld: %s: Hardware has already been "
 785                              "initialized\n", ha->host_no, __func__));
 786
 787                 /* Receive firmware boot acknowledgement */
 788                 mbox_status = readw(&ha->reg->mailbox[0]);
 789
 790                 DEBUG2(printk("scsi%ld: %s: H/W Config complete - mbox[0]= "
 791                               "0x%x\n", ha->host_no, __func__, mbox_status));
 792
 793                 /* Is firmware already booted? */
 794                 if (mbox_status == 0) {
 795                         /* F/W not running, must be config by net driver */
 796                         config_chip = 1;
 797                         soft_reset = 0;
 798                 } else {
 799                         writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
 800                                &ha->reg->ctrl_status);
 801                         readl(&ha->reg->ctrl_status);
 802                         writel(set_rmask(CSR_SCSI_COMPLETION_INTR),
 803                                &ha->reg->ctrl_status);
 804                         readl(&ha->reg->ctrl_status);
 805                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 806                         if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
 807                                 DEBUG2(printk("scsi%ld: %s: Get firmware "
 808                                               "state -- state = 0x%x\n",
 809                                               ha->host_no,
 810                                               __func__, ha->firmware_state));
 811                                 /* F/W is running */
 812                                 if (ha->firmware_state &
 813                                     FW_STATE_CONFIG_WAIT) {
 814                                         DEBUG2(printk("scsi%ld: %s: Firmware "
 815                                                       "in known state -- "
 816                                                       "config and "
 817                                                       "boot, state = 0x%x\n",
 818                                                       ha->host_no, __func__,
 819                                                       ha->firmware_state));
 820                                         config_chip = 1;
 821                                         soft_reset = 0;
 822                                 }
 823                         } else {
 824                                 DEBUG2(printk("scsi%ld: %s: Firmware in "
 825                                               "unknown state -- resetting,"
 826                                               " state = "
 827                                               "0x%x\n", ha->host_no, __func__,
 828                                               ha->firmware_state));
 829                         }
 830                         spin_lock_irqsave(&ha->hardware_lock, flags);
 831                 }
 832         } else {
 833                 DEBUG(printk("scsi%ld: %s: H/W initialization hasn't been "
 834                              "started - resetting\n", ha->host_no, __func__));
 835         }
 836         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 837
 838         DEBUG(printk("scsi%ld: %s: Flags soft_rest=%d, config= %d\n ",
 839                      ha->host_no, __func__, soft_reset, config_chip));
 840         if (soft_reset) {
 841                 DEBUG(printk("scsi%ld: %s: Issue Soft Reset\n", ha->host_no,
 842                              __func__));
 843                 status = qla4xxx_soft_reset(ha);        /* NOTE: acquires drvr
 844                                                          * lock again, but ok */
 845                 if (status == QLA_ERROR) {
 846                         DEBUG(printk("scsi%d: %s: Soft Reset failed!\n",
 847                                      ha->host_no, __func__));
 848                         ql4xxx_unlock_drvr(ha);
 849                         return QLA_ERROR;
 850                 }
 851                 config_chip = 1;
 852
 853                 /* Reset clears the semaphore, so acquire again */
 854                 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
 855                         return QLA_ERROR;
 856         }
 857
 858         if (config_chip) {
 859                 if ((status = qla4xxx_config_nvram(ha)) == QLA_SUCCESS)
 860                         status = qla4xxx_start_firmware_from_flash(ha);
 861         }
 862
 863         ql4xxx_unlock_drvr(ha);
 864         if (status == QLA_SUCCESS) {
 865                 if (test_and_clear_bit(AF_GET_CRASH_RECORD, &ha->flags))
 866                         qla4xxx_get_crash_record(ha);
 867         } else {
 868                 DEBUG(printk("scsi%ld: %s: Firmware has NOT started\n",
 869                              ha->host_no, __func__));
 870         }
 871         return status;
 872 }
 873 /**
 874  * qla4xxx_free_ddb_index - Free DDBs reserved by firmware
 875  * @ha: pointer to adapter structure
 876  *
 877  * Since firmware is not running in autoconnect mode the DDB indices should
 878  * be freed so that when login happens from user space there are free DDB
 879  * indices available.
 880  **/
 881 void qla4xxx_free_ddb_index(struct scsi_qla_host *ha)
 882 {
 883         int max_ddbs;
 884         int ret;
 885         uint32_t idx = 0, next_idx = 0;
 886         uint32_t state = 0, conn_err = 0;
 887
 888         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
 889                                      MAX_DEV_DB_ENTRIES;
 890
 891         for (idx = 0; idx < max_ddbs; idx = next_idx) {
 892                 ret = qla4xxx_get_fwddb_entry(ha, idx, NULL, 0, NULL,
 893                                               &next_idx, &state, &conn_err,
 894                                                 NULL, NULL);
 895                 if (ret == QLA_ERROR) {
 896                         next_idx++;
 897                         continue;
 898                 }
 899                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
 900                     state == DDB_DS_SESSION_FAILED) {
 901                         DEBUG2(ql4_printk(KERN_INFO, ha,
 902                                           "Freeing DDB index = 0x%x\n", idx));
 903                         ret = qla4xxx_clear_ddb_entry(ha, idx);
 904                         if (ret == QLA_ERROR)
 905                                 ql4_printk(KERN_ERR, ha,
 906                                            "Unable to clear DDB index = "
 907                                            "0x%x\n", idx);
 908                 }
 909                 if (next_idx == 0)
 910                         break;
 911         }
 912 }
 913
 914 /**
 915  * qla4xxx_initialize_adapter - initiailizes hba
 916  * @ha: Pointer to host adapter structure.
 917  *
 918  * This routine parforms all of the steps necessary to initialize the adapter.
 919  *
 920  **/
 921 int qla4xxx_initialize_adapter(struct scsi_qla_host *ha, int is_reset)
 922 {
 923         int status = QLA_ERROR;
 924
 925         ha->eeprom_cmd_data = 0;
 926
 927         ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
 928         ha->isp_ops->pci_config(ha);
 929
 930         ha->isp_ops->disable_intrs(ha);
 931
 932         /* Initialize the Host adapter request/response queues and firmware */
 933         if (ha->isp_ops->start_firmware(ha) == QLA_ERROR)
 934                 goto exit_init_hba;
 935
 936         /*
 937          * For ISP83XX, mailbox and IOCB interrupts are enabled separately.
 938          * Mailbox interrupts must be enabled prior to issuing any mailbox
 939          * command in order to prevent the possibility of losing interrupts
 940          * while switching from polling to interrupt mode. IOCB interrupts are
 941          * enabled via isp_ops->enable_intrs.
 942          */
 943         if (is_qla8032(ha))
 944                 qla4_83xx_enable_mbox_intrs(ha);
 945
 946         if (qla4xxx_about_firmware(ha) == QLA_ERROR)
 947                 goto exit_init_hba;
 948
 949         if (ha->isp_ops->get_sys_info(ha) == QLA_ERROR)
 950                 goto exit_init_hba;
 951
 952         qla4xxx_init_local_data(ha);
 953
 954         status = qla4xxx_init_firmware(ha);
 955         if (status == QLA_ERROR)
 956                 goto exit_init_hba;
 957
 958         if (is_reset == RESET_ADAPTER)
 959                 qla4xxx_build_ddb_list(ha, is_reset);
 960
 961         set_bit(AF_ONLINE, &ha->flags);
 962 exit_init_hba:
 963         if (is_qla80XX(ha) && (status == QLA_ERROR)) {
 964                 /* Since interrupts are registered in start_firmware for
 965                  * 80XX, release them here if initialize_adapter fails */
 966                 qla4xxx_free_irqs(ha);
 967         }
 968
 969         DEBUG2(printk("scsi%ld: initialize adapter: %s\n", ha->host_no,
 970             status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
 971         return status;
 972 }
 973
 974 int qla4xxx_ddb_change(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
 975                        struct ddb_entry *ddb_entry, uint32_t state)
 976 {
 977         uint32_t old_fw_ddb_device_state;
 978         int status = QLA_ERROR;
 979
 980         old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
 981         DEBUG2(ql4_printk(KERN_INFO, ha,
 982                           "%s: DDB - old state = 0x%x, new state = 0x%x for "
 983                           "index [%d]\n", __func__,
 984                           ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
 985
 986         ddb_entry->fw_ddb_device_state = state;
 987
 988         switch (old_fw_ddb_device_state) {
 989         case DDB_DS_LOGIN_IN_PROCESS:
 990                 switch (state) {
 991                 case DDB_DS_SESSION_ACTIVE:
 992                 case DDB_DS_DISCOVERY:
 993                         qla4xxx_update_session_conn_param(ha, ddb_entry);
 994                         ddb_entry->unblock_sess(ddb_entry->sess);
 995                         status = QLA_SUCCESS;
 996                         break;
 997                 case DDB_DS_SESSION_FAILED:
 998                 case DDB_DS_NO_CONNECTION_ACTIVE:
 999                         iscsi_conn_login_event(ddb_entry->conn,
1000                                                ISCSI_CONN_STATE_FREE);
1001                         status = QLA_SUCCESS;
1002                         break;
1003                 }
1004                 break;
1005         case DDB_DS_SESSION_ACTIVE:
1006         case DDB_DS_DISCOVERY:
1007                 switch (state) {
1008                 case DDB_DS_SESSION_FAILED:
1009                         /*
1010                          * iscsi_session failure  will cause userspace to
1011                          * stop the connection which in turn would block the
1012                          * iscsi_session and start relogin
1013                          */
1014                         iscsi_session_failure(ddb_entry->sess->dd_data,
1015                                               ISCSI_ERR_CONN_FAILED);
1016                         status = QLA_SUCCESS;
1017                         break;
1018                 case DDB_DS_NO_CONNECTION_ACTIVE:
1019                         clear_bit(fw_ddb_index, ha->ddb_idx_map);
1020                         status = QLA_SUCCESS;
1021                         break;
1022                 }
1023                 break;
1024         case DDB_DS_SESSION_FAILED:
1025                 switch (state) {
1026                 case DDB_DS_SESSION_ACTIVE:
1027                 case DDB_DS_DISCOVERY:
1028                         ddb_entry->unblock_sess(ddb_entry->sess);
1029                         qla4xxx_update_session_conn_param(ha, ddb_entry);
1030                         status = QLA_SUCCESS;
1031                         break;
1032                 case DDB_DS_SESSION_FAILED:
1033                         iscsi_session_failure(ddb_entry->sess->dd_data,
1034                                               ISCSI_ERR_CONN_FAILED);
1035                         status = QLA_SUCCESS;
1036                         break;
1037                 }
1038                 break;
1039         default:
1040                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unknown Event\n",
1041                                 __func__));
1042                 break;
1043         }
1044         return status;
1045 }
1046
1047 void qla4xxx_arm_relogin_timer(struct ddb_entry *ddb_entry)
1048 {
1049         /*
1050          * This triggers a relogin.  After the relogin_timer
1051          * expires, the relogin gets scheduled.  We must wait a
1052          * minimum amount of time since receiving an 0x8014 AEN
1053          * with failed device_state or a logout response before
1054          * we can issue another relogin.
1055          *
1056          * Firmware pads this timeout: (time2wait +1).
1057          * Driver retry to login should be longer than F/W.
1058          * Otherwise F/W will fail
1059          * set_ddb() mbx cmd with 0x4005 since it still
1060          * counting down its time2wait.
1061          */
1062         atomic_set(&ddb_entry->relogin_timer, 0);
1063         atomic_set(&ddb_entry->retry_relogin_timer,
1064                    ddb_entry->default_time2wait + 4);
1065
1066 }
1067
1068 int qla4xxx_flash_ddb_change(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
1069                              struct ddb_entry *ddb_entry, uint32_t state)
1070 {
1071         uint32_t old_fw_ddb_device_state;
1072         int status = QLA_ERROR;
1073
1074         old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
1075         DEBUG2(ql4_printk(KERN_INFO, ha,
1076                           "%s: DDB - old state = 0x%x, new state = 0x%x for "
1077                           "index [%d]\n", __func__,
1078                           ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
1079
1080         ddb_entry->fw_ddb_device_state = state;
1081
1082         switch (old_fw_ddb_device_state) {
1083         case DDB_DS_LOGIN_IN_PROCESS:
1084         case DDB_DS_NO_CONNECTION_ACTIVE:
1085                 switch (state) {
1086                 case DDB_DS_SESSION_ACTIVE:
1087                         ddb_entry->unblock_sess(ddb_entry->sess);
1088                         qla4xxx_update_session_conn_fwddb_param(ha, ddb_entry);
1089                         status = QLA_SUCCESS;
1090                         break;
1091                 case DDB_DS_SESSION_FAILED:
1092                         iscsi_block_session(ddb_entry->sess);
1093                         if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
1094                                 qla4xxx_arm_relogin_timer(ddb_entry);
1095                         status = QLA_SUCCESS;
1096                         break;
1097                 }
1098                 break;
1099         case DDB_DS_SESSION_ACTIVE:
1100                 switch (state) {
1101                 case DDB_DS_SESSION_FAILED:
1102                         iscsi_block_session(ddb_entry->sess);
1103                         if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
1104                                 qla4xxx_arm_relogin_timer(ddb_entry);
1105                         status = QLA_SUCCESS;
1106                         break;
1107                 }
1108                 break;
1109         case DDB_DS_SESSION_FAILED:
1110                 switch (state) {
1111                 case DDB_DS_SESSION_ACTIVE:
1112                         ddb_entry->unblock_sess(ddb_entry->sess);
1113                         qla4xxx_update_session_conn_fwddb_param(ha, ddb_entry);
1114                         status = QLA_SUCCESS;
1115                         break;
1116                 case DDB_DS_SESSION_FAILED:
1117                         if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
1118                                 qla4xxx_arm_relogin_timer(ddb_entry);
1119                         status = QLA_SUCCESS;
1120                         break;
1121                 }
1122                 break;
1123         default:
1124                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unknown Event\n",
1125                                   __func__));
1126                 break;
1127         }
1128         return status;
1129 }
1130
1131 /**
1132  * qla4xxx_process_ddb_changed - process ddb state change
1133  * @ha - Pointer to host adapter structure.
1134  * @fw_ddb_index - Firmware's device database index
1135  * @state - Device state
1136  *
1137  * This routine processes a Decive Database Changed AEN Event.
1138  **/
1139 int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha,
1140                                 uint32_t fw_ddb_index,
1141                                 uint32_t state, uint32_t conn_err)
1142 {
1143         struct ddb_entry *ddb_entry;
1144         int status = QLA_ERROR;
1145
1146         /* check for out of range index */
1147         if (fw_ddb_index >= MAX_DDB_ENTRIES)
1148                 goto exit_ddb_event;
1149
1150         /* Get the corresponging ddb entry */
1151         ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
1152         /* Device does not currently exist in our database. */
1153         if (ddb_entry == NULL) {
1154                 ql4_printk(KERN_ERR, ha, "%s: No ddb_entry at FW index [%d]\n",
1155                            __func__, fw_ddb_index);
1156
1157                 if (state == DDB_DS_NO_CONNECTION_ACTIVE)
1158                         clear_bit(fw_ddb_index, ha->ddb_idx_map);
1159
1160                 goto exit_ddb_event;
1161         }
1162
1163         ddb_entry->ddb_change(ha, fw_ddb_index, ddb_entry, state);
1164
1165 exit_ddb_event:
1166         return status;
1167 }
1168
1169 /**
1170  * qla4xxx_login_flash_ddb - Login to target (DDB)
1171  * @cls_session: Pointer to the session to login
1172  *
1173  * This routine logins to the target.
1174  * Issues setddb and conn open mbx
1175  **/
1176 void qla4xxx_login_flash_ddb(struct iscsi_cls_session *cls_session)
1177 {
1178         struct iscsi_session *sess;
1179         struct ddb_entry *ddb_entry;
1180         struct scsi_qla_host *ha;
1181         struct dev_db_entry *fw_ddb_entry = NULL;
1182         dma_addr_t fw_ddb_dma;
1183         uint32_t mbx_sts = 0;
1184         int ret;
1185
1186         sess = cls_session->dd_data;
1187         ddb_entry = sess->dd_data;
1188         ha =  ddb_entry->ha;
1189
1190         if (!test_bit(AF_LINK_UP, &ha->flags))
1191                 return;
1192
1193         if (ddb_entry->ddb_type != FLASH_DDB) {
1194                 DEBUG2(ql4_printk(KERN_INFO, ha,
1195                                   "Skipping login to non FLASH DB"));
1196                 goto exit_login;
1197         }
1198
1199         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
1200                                       &fw_ddb_dma);
1201         if (fw_ddb_entry == NULL) {
1202                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
1203                 goto exit_login;
1204         }
1205
1206         if (ddb_entry->fw_ddb_index == INVALID_ENTRY) {
1207                 ret = qla4xxx_get_ddb_index(ha, &ddb_entry->fw_ddb_index);
1208                 if (ret == QLA_ERROR)
1209                         goto exit_login;
1210
1211                 ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
1212                 ha->tot_ddbs++;
1213         }
1214
1215         memcpy(fw_ddb_entry, &ddb_entry->fw_ddb_entry,
1216                sizeof(struct dev_db_entry));
1217         ddb_entry->sess->target_id = ddb_entry->fw_ddb_index;
1218
1219         ret = qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index,
1220                                     fw_ddb_dma, &mbx_sts);
1221         if (ret == QLA_ERROR) {
1222                 DEBUG2(ql4_printk(KERN_ERR, ha, "Set DDB failed\n"));
1223                 goto exit_login;
1224         }
1225
1226         ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
1227         ret = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
1228         if (ret == QLA_ERROR) {
1229                 ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
1230                            sess->targetname);
1231                 goto exit_login;
1232         }
1233
1234 exit_login:
1235         if (fw_ddb_entry)
1236                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
1237 }
1238