linux/drivers/scsi/qla4xxx/ql4_init.c
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   1/*
   2 * QLogic iSCSI HBA Driver
   3 * Copyright (c)  2003-2013 QLogic Corporation
   4 *
   5 * See LICENSE.qla4xxx for copyright and licensing details.
   6 */
   7
   8#include <scsi/iscsi_if.h>
   9#include "ql4_def.h"
  10#include "ql4_glbl.h"
  11#include "ql4_dbg.h"
  12#include "ql4_inline.h"
  13
  14static 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 **/
  50void 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 **/
  66static 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 **/
  86int qla4xxx_init_rings(struct scsi_qla_host *ha)
  87{
  88        unsigned long flags = 0;
  89        int i;
  90
  91        /* Initialize request queue. */
  92        spin_lock_irqsave(&ha->hardware_lock, flags);
  93        ha->request_out = 0;
  94        ha->request_in = 0;
  95        ha->request_ptr = &ha->request_ring[ha->request_in];
  96        ha->req_q_count = REQUEST_QUEUE_DEPTH;
  97
  98        /* Initialize response queue. */
  99        ha->response_in = 0;
 100        ha->response_out = 0;
 101        ha->response_ptr = &ha->response_ring[ha->response_out];
 102
 103        if (is_qla8022(ha)) {
 104                writel(0,
 105                    (unsigned long  __iomem *)&ha->qla4_82xx_reg->req_q_out);
 106                writel(0,
 107                    (unsigned long  __iomem *)&ha->qla4_82xx_reg->rsp_q_in);
 108                writel(0,
 109                    (unsigned long  __iomem *)&ha->qla4_82xx_reg->rsp_q_out);
 110        } else if (is_qla8032(ha) || is_qla8042(ha)) {
 111                writel(0,
 112                       (unsigned long __iomem *)&ha->qla4_83xx_reg->req_q_in);
 113                writel(0,
 114                       (unsigned long __iomem *)&ha->qla4_83xx_reg->rsp_q_in);
 115                writel(0,
 116                       (unsigned long __iomem *)&ha->qla4_83xx_reg->rsp_q_out);
 117        } else {
 118                /*
 119                 * Initialize DMA Shadow registers.  The firmware is really
 120                 * supposed to take care of this, but on some uniprocessor
 121                 * systems, the shadow registers aren't cleared-- causing
 122                 * the interrupt_handler to think there are responses to be
 123                 * processed when there aren't.
 124                 */
 125                ha->shadow_regs->req_q_out = __constant_cpu_to_le32(0);
 126                ha->shadow_regs->rsp_q_in = __constant_cpu_to_le32(0);
 127                wmb();
 128
 129                writel(0, &ha->reg->req_q_in);
 130                writel(0, &ha->reg->rsp_q_out);
 131                readl(&ha->reg->rsp_q_out);
 132        }
 133
 134        qla4xxx_init_response_q_entries(ha);
 135
 136        /* Initialize mailbox active array */
 137        for (i = 0; i < MAX_MRB; i++)
 138                ha->active_mrb_array[i] = NULL;
 139
 140        spin_unlock_irqrestore(&ha->hardware_lock, flags);
 141
 142        return QLA_SUCCESS;
 143}
 144
 145/**
 146 * qla4xxx_get_sys_info - validate adapter MAC address(es)
 147 * @ha: pointer to host adapter structure.
 148 *
 149 **/
 150int 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_zalloc_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
 165        /* Get flash sys info */
 166        if (qla4xxx_get_flash(ha, sys_info_dma, FLASH_OFFSET_SYS_INFO,
 167                              sizeof(*sys_info)) != QLA_SUCCESS) {
 168                DEBUG2(printk("scsi%ld: %s: get_flash FLASH_OFFSET_SYS_INFO "
 169                              "failed\n", ha->host_no, __func__));
 170
 171                goto exit_get_sys_info;
 172        }
 173
 174        /* Save M.A.C. address & serial_number */
 175        memcpy(ha->my_mac, &sys_info->physAddr[0].address[0],
 176               min(sizeof(ha->my_mac),
 177                   sizeof(sys_info->physAddr[0].address)));
 178        memcpy(ha->serial_number, &sys_info->acSerialNumber,
 179               min(sizeof(ha->serial_number),
 180                   sizeof(sys_info->acSerialNumber)));
 181
 182        status = QLA_SUCCESS;
 183
 184exit_get_sys_info:
 185        dma_free_coherent(&ha->pdev->dev, sizeof(*sys_info), sys_info,
 186                          sys_info_dma);
 187
 188exit_get_sys_info_no_free:
 189        return status;
 190}
 191
 192/**
 193 * qla4xxx_init_local_data - initialize adapter specific local data
 194 * @ha: pointer to host adapter structure.
 195 *
 196 **/
 197static void qla4xxx_init_local_data(struct scsi_qla_host *ha)
 198{
 199        /* Initialize aen queue */
 200        ha->aen_q_count = MAX_AEN_ENTRIES;
 201}
 202
 203static uint8_t
 204qla4xxx_wait_for_ip_config(struct scsi_qla_host *ha)
 205{
 206        uint8_t ipv4_wait = 0;
 207        uint8_t ipv6_wait = 0;
 208        int8_t ip_address[IPv6_ADDR_LEN] = {0} ;
 209
 210        /* If both IPv4 & IPv6 are enabled, possibly only one
 211         * IP address may be acquired, so check to see if we
 212         * need to wait for another */
 213        if (is_ipv4_enabled(ha) && is_ipv6_enabled(ha)) {
 214                if (((ha->addl_fw_state & FW_ADDSTATE_DHCPv4_ENABLED) != 0) &&
 215                    ((ha->addl_fw_state &
 216                                    FW_ADDSTATE_DHCPv4_LEASE_ACQUIRED) == 0)) {
 217                        ipv4_wait = 1;
 218                }
 219                if (((ha->ip_config.ipv6_addl_options &
 220                      IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) != 0) &&
 221                    ((ha->ip_config.ipv6_link_local_state ==
 222                      IP_ADDRSTATE_ACQUIRING) ||
 223                     (ha->ip_config.ipv6_addr0_state ==
 224                      IP_ADDRSTATE_ACQUIRING) ||
 225                     (ha->ip_config.ipv6_addr1_state ==
 226                      IP_ADDRSTATE_ACQUIRING))) {
 227
 228                        ipv6_wait = 1;
 229
 230                        if ((ha->ip_config.ipv6_link_local_state ==
 231                             IP_ADDRSTATE_PREFERRED) ||
 232                            (ha->ip_config.ipv6_addr0_state ==
 233                             IP_ADDRSTATE_PREFERRED) ||
 234                            (ha->ip_config.ipv6_addr1_state ==
 235                             IP_ADDRSTATE_PREFERRED)) {
 236                                DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
 237                                              "Preferred IP configured."
 238                                              " Don't wait!\n", ha->host_no,
 239                                              __func__));
 240                                ipv6_wait = 0;
 241                        }
 242                        if (memcmp(&ha->ip_config.ipv6_default_router_addr,
 243                                   ip_address, IPv6_ADDR_LEN) == 0) {
 244                                DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
 245                                              "No Router configured. "
 246                                              "Don't wait!\n", ha->host_no,
 247                                              __func__));
 248                                ipv6_wait = 0;
 249                        }
 250                        if ((ha->ip_config.ipv6_default_router_state ==
 251                             IPV6_RTRSTATE_MANUAL) &&
 252                            (ha->ip_config.ipv6_link_local_state ==
 253                             IP_ADDRSTATE_TENTATIVE) &&
 254                            (memcmp(&ha->ip_config.ipv6_link_local_addr,
 255                             &ha->ip_config.ipv6_default_router_addr, 4) ==
 256                             0)) {
 257                                DEBUG2(printk("scsi%ld: %s: LinkLocal Router & "
 258                                        "IP configured. Don't wait!\n",
 259                                        ha->host_no, __func__));
 260                                ipv6_wait = 0;
 261                        }
 262                }
 263                if (ipv4_wait || ipv6_wait) {
 264                        DEBUG2(printk("scsi%ld: %s: Wait for additional "
 265                                      "IP(s) \"", ha->host_no, __func__));
 266                        if (ipv4_wait)
 267                                DEBUG2(printk("IPv4 "));
 268                        if (ha->ip_config.ipv6_link_local_state ==
 269                            IP_ADDRSTATE_ACQUIRING)
 270                                DEBUG2(printk("IPv6LinkLocal "));
 271                        if (ha->ip_config.ipv6_addr0_state ==
 272                            IP_ADDRSTATE_ACQUIRING)
 273                                DEBUG2(printk("IPv6Addr0 "));
 274                        if (ha->ip_config.ipv6_addr1_state ==
 275                            IP_ADDRSTATE_ACQUIRING)
 276                                DEBUG2(printk("IPv6Addr1 "));
 277                        DEBUG2(printk("\"\n"));
 278                }
 279        }
 280
 281        return ipv4_wait|ipv6_wait;
 282}
 283
 284static int qla4_80xx_is_minidump_dma_capable(struct scsi_qla_host *ha,
 285                struct qla4_8xxx_minidump_template_hdr *md_hdr)
 286{
 287        int offset = (is_qla8022(ha)) ? QLA8022_TEMPLATE_CAP_OFFSET :
 288                                        QLA83XX_TEMPLATE_CAP_OFFSET;
 289        int rval = 1;
 290        uint32_t *cap_offset;
 291
 292        cap_offset = (uint32_t *)((char *)md_hdr + offset);
 293
 294        if (!(le32_to_cpu(*cap_offset) & BIT_0)) {
 295                ql4_printk(KERN_INFO, ha, "PEX DMA Not supported %d\n",
 296                           *cap_offset);
 297                rval = 0;
 298        }
 299
 300        return rval;
 301}
 302
 303/**
 304 * qla4xxx_alloc_fw_dump - Allocate memory for minidump data.
 305 * @ha: pointer to host adapter structure.
 306 **/
 307void qla4xxx_alloc_fw_dump(struct scsi_qla_host *ha)
 308{
 309        int status;
 310        uint32_t capture_debug_level;
 311        int hdr_entry_bit, k;
 312        void *md_tmp;
 313        dma_addr_t md_tmp_dma;
 314        struct qla4_8xxx_minidump_template_hdr *md_hdr;
 315        int dma_capable;
 316
 317        if (ha->fw_dump) {
 318                ql4_printk(KERN_WARNING, ha,
 319                           "Firmware dump previously allocated.\n");
 320                return;
 321        }
 322
 323        status = qla4xxx_req_template_size(ha);
 324        if (status != QLA_SUCCESS) {
 325                ql4_printk(KERN_INFO, ha,
 326                           "scsi%ld: Failed to get template size\n",
 327                           ha->host_no);
 328                return;
 329        }
 330
 331        clear_bit(AF_82XX_FW_DUMPED, &ha->flags);
 332
 333        /* Allocate memory for saving the template */
 334        md_tmp = dma_alloc_coherent(&ha->pdev->dev, ha->fw_dump_tmplt_size,
 335                                    &md_tmp_dma, GFP_KERNEL);
 336        if (!md_tmp) {
 337                ql4_printk(KERN_INFO, ha,
 338                           "scsi%ld: Failed to allocate DMA memory\n",
 339                           ha->host_no);
 340                return;
 341        }
 342
 343        /* Request template */
 344        status =  qla4xxx_get_minidump_template(ha, md_tmp_dma);
 345        if (status != QLA_SUCCESS) {
 346                ql4_printk(KERN_INFO, ha,
 347                           "scsi%ld: Failed to get minidump template\n",
 348                           ha->host_no);
 349                goto alloc_cleanup;
 350        }
 351
 352        md_hdr = (struct qla4_8xxx_minidump_template_hdr *)md_tmp;
 353
 354        dma_capable = qla4_80xx_is_minidump_dma_capable(ha, md_hdr);
 355
 356        capture_debug_level = md_hdr->capture_debug_level;
 357
 358        /* Get capture mask based on module loadtime setting. */
 359        if ((ql4xmdcapmask >= 0x3 && ql4xmdcapmask <= 0x7F) ||
 360            (ql4xmdcapmask == 0xFF && dma_capable))  {
 361                ha->fw_dump_capture_mask = ql4xmdcapmask;
 362        } else {
 363                if (ql4xmdcapmask == 0xFF)
 364                        ql4_printk(KERN_INFO, ha, "Falling back to default capture mask, as PEX DMA is not supported\n");
 365                ha->fw_dump_capture_mask = capture_debug_level;
 366        }
 367
 368        md_hdr->driver_capture_mask = ha->fw_dump_capture_mask;
 369
 370        DEBUG2(ql4_printk(KERN_INFO, ha, "Minimum num of entries = %d\n",
 371                          md_hdr->num_of_entries));
 372        DEBUG2(ql4_printk(KERN_INFO, ha, "Dump template size  = %d\n",
 373                          ha->fw_dump_tmplt_size));
 374        DEBUG2(ql4_printk(KERN_INFO, ha, "Selected Capture mask =0x%x\n",
 375                          ha->fw_dump_capture_mask));
 376
 377        /* Calculate fw_dump_size */
 378        for (hdr_entry_bit = 0x2, k = 1; (hdr_entry_bit & 0xFF);
 379             hdr_entry_bit <<= 1, k++) {
 380                if (hdr_entry_bit & ha->fw_dump_capture_mask)
 381                        ha->fw_dump_size += md_hdr->capture_size_array[k];
 382        }
 383
 384        /* Total firmware dump size including command header */
 385        ha->fw_dump_size += ha->fw_dump_tmplt_size;
 386        ha->fw_dump = vmalloc(ha->fw_dump_size);
 387        if (!ha->fw_dump)
 388                goto alloc_cleanup;
 389
 390        DEBUG2(ql4_printk(KERN_INFO, ha,
 391                          "Minidump Template Size = 0x%x KB\n",
 392                          ha->fw_dump_tmplt_size));
 393        DEBUG2(ql4_printk(KERN_INFO, ha,
 394                          "Total Minidump size = 0x%x KB\n", ha->fw_dump_size));
 395
 396        memcpy(ha->fw_dump, md_tmp, ha->fw_dump_tmplt_size);
 397        ha->fw_dump_tmplt_hdr = ha->fw_dump;
 398
 399alloc_cleanup:
 400        dma_free_coherent(&ha->pdev->dev, ha->fw_dump_tmplt_size,
 401                          md_tmp, md_tmp_dma);
 402}
 403
 404static int qla4xxx_fw_ready(struct scsi_qla_host *ha)
 405{
 406        uint32_t timeout_count;
 407        int ready = 0;
 408
 409        DEBUG2(ql4_printk(KERN_INFO, ha, "Waiting for Firmware Ready..\n"));
 410        for (timeout_count = ADAPTER_INIT_TOV; timeout_count > 0;
 411             timeout_count--) {
 412                if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
 413                        qla4xxx_get_dhcp_ip_address(ha);
 414
 415                /* Get firmware state. */
 416                if (qla4xxx_get_firmware_state(ha) != QLA_SUCCESS) {
 417                        DEBUG2(printk("scsi%ld: %s: unable to get firmware "
 418                                      "state\n", ha->host_no, __func__));
 419                        break;
 420                }
 421
 422                if (ha->firmware_state & FW_STATE_ERROR) {
 423                        DEBUG2(printk("scsi%ld: %s: an unrecoverable error has"
 424                                      " occurred\n", ha->host_no, __func__));
 425                        break;
 426
 427                }
 428                if (ha->firmware_state & FW_STATE_CONFIG_WAIT) {
 429                        /*
 430                         * The firmware has not yet been issued an Initialize
 431                         * Firmware command, so issue it now.
 432                         */
 433                        if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR)
 434                                break;
 435
 436                        /* Go back and test for ready state - no wait. */
 437                        continue;
 438                }
 439
 440                if (ha->firmware_state & FW_STATE_WAIT_AUTOCONNECT) {
 441                        DEBUG2(printk(KERN_INFO "scsi%ld: %s: fwstate:"
 442                                      "AUTOCONNECT in progress\n",
 443                                      ha->host_no, __func__));
 444                }
 445
 446                if (ha->firmware_state & FW_STATE_CONFIGURING_IP) {
 447                        DEBUG2(printk(KERN_INFO "scsi%ld: %s: fwstate:"
 448                                      " CONFIGURING IP\n",
 449                                      ha->host_no, __func__));
 450                        /*
 451                         * Check for link state after 15 secs and if link is
 452                         * still DOWN then, cable is unplugged. Ignore "DHCP
 453                         * in Progress/CONFIGURING IP" bit to check if firmware
 454                         * is in ready state or not after 15 secs.
 455                         * This is applicable for both 2.x & 3.x firmware
 456                         */
 457                        if (timeout_count <= (ADAPTER_INIT_TOV - 15)) {
 458                                if (ha->addl_fw_state & FW_ADDSTATE_LINK_UP) {
 459                                        DEBUG2(printk(KERN_INFO "scsi%ld: %s:"
 460                                                  " LINK UP (Cable plugged)\n",
 461                                                  ha->host_no, __func__));
 462                                } else if (ha->firmware_state &
 463                                          (FW_STATE_CONFIGURING_IP |
 464                                                             FW_STATE_READY)) {
 465                                        DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
 466                                                "LINK DOWN (Cable unplugged)\n",
 467                                                ha->host_no, __func__));
 468                                        ha->firmware_state = FW_STATE_READY;
 469                                }
 470                        }
 471                }
 472
 473                if (ha->firmware_state == FW_STATE_READY) {
 474                        /* If DHCP IP Addr is available, retrieve it now. */
 475                        if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR,
 476                                                                &ha->dpc_flags))
 477                                qla4xxx_get_dhcp_ip_address(ha);
 478
 479                        if (!qla4xxx_wait_for_ip_config(ha) ||
 480                                                        timeout_count == 1) {
 481                                DEBUG2(ql4_printk(KERN_INFO, ha,
 482                                    "Firmware Ready..\n"));
 483                                /* The firmware is ready to process SCSI
 484                                   commands. */
 485                                DEBUG2(ql4_printk(KERN_INFO, ha,
 486                                        "scsi%ld: %s: MEDIA TYPE"
 487                                        " - %s\n", ha->host_no,
 488                                        __func__, (ha->addl_fw_state &
 489                                        FW_ADDSTATE_OPTICAL_MEDIA)
 490                                        != 0 ? "OPTICAL" : "COPPER"));
 491                                DEBUG2(ql4_printk(KERN_INFO, ha,
 492                                        "scsi%ld: %s: DHCPv4 STATE"
 493                                        " Enabled %s\n", ha->host_no,
 494                                         __func__, (ha->addl_fw_state &
 495                                         FW_ADDSTATE_DHCPv4_ENABLED) != 0 ?
 496                                        "YES" : "NO"));
 497                                DEBUG2(ql4_printk(KERN_INFO, ha,
 498                                        "scsi%ld: %s: LINK %s\n",
 499                                        ha->host_no, __func__,
 500                                        (ha->addl_fw_state &
 501                                         FW_ADDSTATE_LINK_UP) != 0 ?
 502                                        "UP" : "DOWN"));
 503                                DEBUG2(ql4_printk(KERN_INFO, ha,
 504                                        "scsi%ld: %s: iSNS Service "
 505                                        "Started %s\n",
 506                                        ha->host_no, __func__,
 507                                        (ha->addl_fw_state &
 508                                         FW_ADDSTATE_ISNS_SVC_ENABLED) != 0 ?
 509                                        "YES" : "NO"));
 510
 511                                ready = 1;
 512                                break;
 513                        }
 514                }
 515                DEBUG2(printk("scsi%ld: %s: waiting on fw, state=%x:%x - "
 516                              "seconds expired= %d\n", ha->host_no, __func__,
 517                              ha->firmware_state, ha->addl_fw_state,
 518                              timeout_count));
 519                if (is_qla4032(ha) &&
 520                        !(ha->addl_fw_state & FW_ADDSTATE_LINK_UP) &&
 521                        (timeout_count < ADAPTER_INIT_TOV - 5)) {
 522                        break;
 523                }
 524
 525                msleep(1000);
 526        }                       /* end of for */
 527
 528        if (timeout_count <= 0)
 529                DEBUG2(printk("scsi%ld: %s: FW Initialization timed out!\n",
 530                              ha->host_no, __func__));
 531
 532        if (ha->firmware_state & FW_STATE_CONFIGURING_IP) {
 533                DEBUG2(printk("scsi%ld: %s: FW initialized, but is reporting "
 534                              "it's waiting to configure an IP address\n",
 535                               ha->host_no, __func__));
 536                ready = 1;
 537        } else if (ha->firmware_state & FW_STATE_WAIT_AUTOCONNECT) {
 538                DEBUG2(printk("scsi%ld: %s: FW initialized, but "
 539                              "auto-discovery still in process\n",
 540                               ha->host_no, __func__));
 541                ready = 1;
 542        }
 543
 544        return ready;
 545}
 546
 547/**
 548 * qla4xxx_init_firmware - initializes the firmware.
 549 * @ha: pointer to host adapter structure.
 550 *
 551 **/
 552static int qla4xxx_init_firmware(struct scsi_qla_host *ha)
 553{
 554        int status = QLA_ERROR;
 555
 556        if (is_aer_supported(ha) &&
 557            test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
 558                return status;
 559
 560        /* For 82xx, stop firmware before initializing because if BIOS
 561         * has previously initialized firmware, then driver's initialize
 562         * firmware will fail. */
 563        if (is_qla80XX(ha))
 564                qla4_8xxx_stop_firmware(ha);
 565
 566        ql4_printk(KERN_INFO, ha, "Initializing firmware..\n");
 567        if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR) {
 568                DEBUG2(printk("scsi%ld: %s: Failed to initialize firmware "
 569                              "control block\n", ha->host_no, __func__));
 570                return status;
 571        }
 572
 573        if (!qla4xxx_fw_ready(ha))
 574                return status;
 575
 576        if (is_qla80XX(ha) && !test_bit(AF_INIT_DONE, &ha->flags))
 577                qla4xxx_alloc_fw_dump(ha);
 578
 579        return qla4xxx_get_firmware_status(ha);
 580}
 581
 582static void qla4xxx_set_model_info(struct scsi_qla_host *ha)
 583{
 584        uint16_t board_id_string[8];
 585        int i;
 586        int size = sizeof(ha->nvram->isp4022.boardIdStr);
 587        int offset = offsetof(struct eeprom_data, isp4022.boardIdStr) / 2;
 588
 589        for (i = 0; i < (size / 2) ; i++) {
 590                board_id_string[i] = rd_nvram_word(ha, offset);
 591                offset += 1;
 592        }
 593
 594        memcpy(ha->model_name, board_id_string, size);
 595}
 596
 597static int qla4xxx_config_nvram(struct scsi_qla_host *ha)
 598{
 599        unsigned long flags;
 600        union external_hw_config_reg extHwConfig;
 601
 602        DEBUG2(printk("scsi%ld: %s: Get EEProm parameters \n", ha->host_no,
 603                      __func__));
 604        if (ql4xxx_lock_flash(ha) != QLA_SUCCESS)
 605                return QLA_ERROR;
 606        if (ql4xxx_lock_nvram(ha) != QLA_SUCCESS) {
 607                ql4xxx_unlock_flash(ha);
 608                return QLA_ERROR;
 609        }
 610
 611        /* Get EEPRom Parameters from NVRAM and validate */
 612        ql4_printk(KERN_INFO, ha, "Configuring NVRAM ...\n");
 613        if (qla4xxx_is_nvram_configuration_valid(ha) == QLA_SUCCESS) {
 614                spin_lock_irqsave(&ha->hardware_lock, flags);
 615                extHwConfig.Asuint32_t =
 616                        rd_nvram_word(ha, eeprom_ext_hw_conf_offset(ha));
 617                spin_unlock_irqrestore(&ha->hardware_lock, flags);
 618        } else {
 619                ql4_printk(KERN_WARNING, ha,
 620                    "scsi%ld: %s: EEProm checksum invalid.  "
 621                    "Please update your EEPROM\n", ha->host_no,
 622                    __func__);
 623
 624                /* Attempt to set defaults */
 625                if (is_qla4010(ha))
 626                        extHwConfig.Asuint32_t = 0x1912;
 627                else if (is_qla4022(ha) | is_qla4032(ha))
 628                        extHwConfig.Asuint32_t = 0x0023;
 629                else
 630                        return QLA_ERROR;
 631        }
 632
 633        if (is_qla4022(ha) || is_qla4032(ha))
 634                qla4xxx_set_model_info(ha);
 635        else
 636                strcpy(ha->model_name, "QLA4010");
 637
 638        DEBUG(printk("scsi%ld: %s: Setting extHwConfig to 0xFFFF%04x\n",
 639                     ha->host_no, __func__, extHwConfig.Asuint32_t));
 640
 641        spin_lock_irqsave(&ha->hardware_lock, flags);
 642        writel((0xFFFF << 16) | extHwConfig.Asuint32_t, isp_ext_hw_conf(ha));
 643        readl(isp_ext_hw_conf(ha));
 644        spin_unlock_irqrestore(&ha->hardware_lock, flags);
 645
 646        ql4xxx_unlock_nvram(ha);
 647        ql4xxx_unlock_flash(ha);
 648
 649        return QLA_SUCCESS;
 650}
 651
 652/**
 653 * qla4_8xxx_pci_config() - Setup ISP82xx PCI configuration registers.
 654 * @ha: HA context
 655 */
 656void qla4_8xxx_pci_config(struct scsi_qla_host *ha)
 657{
 658        pci_set_master(ha->pdev);
 659}
 660
 661void qla4xxx_pci_config(struct scsi_qla_host *ha)
 662{
 663        uint16_t w;
 664        int status;
 665
 666        ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
 667
 668        pci_set_master(ha->pdev);
 669        status = pci_set_mwi(ha->pdev);
 670        /*
 671         * We want to respect framework's setting of PCI configuration space
 672         * command register and also want to make sure that all bits of
 673         * interest to us are properly set in command register.
 674         */
 675        pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
 676        w |= PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
 677        w &= ~PCI_COMMAND_INTX_DISABLE;
 678        pci_write_config_word(ha->pdev, PCI_COMMAND, w);
 679}
 680
 681static int qla4xxx_start_firmware_from_flash(struct scsi_qla_host *ha)
 682{
 683        int status = QLA_ERROR;
 684        unsigned long max_wait_time;
 685        unsigned long flags;
 686        uint32_t mbox_status;
 687
 688        ql4_printk(KERN_INFO, ha, "Starting firmware ...\n");
 689
 690        /*
 691         * Start firmware from flash ROM
 692         *
 693         * WORKAROUND: Stuff a non-constant value that the firmware can
 694         * use as a seed for a random number generator in MB7 prior to
 695         * setting BOOT_ENABLE.  Fixes problem where the TCP
 696         * connections use the same TCP ports after each reboot,
 697         * causing some connections to not get re-established.
 698         */
 699        DEBUG(printk("scsi%d: %s: Start firmware from flash ROM\n",
 700                     ha->host_no, __func__));
 701
 702        spin_lock_irqsave(&ha->hardware_lock, flags);
 703        writel(jiffies, &ha->reg->mailbox[7]);
 704        if (is_qla4022(ha) | is_qla4032(ha))
 705                writel(set_rmask(NVR_WRITE_ENABLE),
 706                       &ha->reg->u1.isp4022.nvram);
 707
 708        writel(2, &ha->reg->mailbox[6]);
 709        readl(&ha->reg->mailbox[6]);
 710
 711        writel(set_rmask(CSR_BOOT_ENABLE), &ha->reg->ctrl_status);
 712        readl(&ha->reg->ctrl_status);
 713        spin_unlock_irqrestore(&ha->hardware_lock, flags);
 714
 715        /* Wait for firmware to come UP. */
 716        DEBUG2(printk(KERN_INFO "scsi%ld: %s: Wait up to %d seconds for "
 717                      "boot firmware to complete...\n",
 718                      ha->host_no, __func__, FIRMWARE_UP_TOV));
 719        max_wait_time = jiffies + (FIRMWARE_UP_TOV * HZ);
 720        do {
 721                uint32_t ctrl_status;
 722
 723                spin_lock_irqsave(&ha->hardware_lock, flags);
 724                ctrl_status = readw(&ha->reg->ctrl_status);
 725                mbox_status = readw(&ha->reg->mailbox[0]);
 726                spin_unlock_irqrestore(&ha->hardware_lock, flags);
 727
 728                if (ctrl_status & set_rmask(CSR_SCSI_PROCESSOR_INTR))
 729                        break;
 730                if (mbox_status == MBOX_STS_COMMAND_COMPLETE)
 731                        break;
 732
 733                DEBUG2(printk(KERN_INFO "scsi%ld: %s: Waiting for boot "
 734                    "firmware to complete... ctrl_sts=0x%x, remaining=%ld\n",
 735                    ha->host_no, __func__, ctrl_status, max_wait_time));
 736
 737                msleep_interruptible(250);
 738        } while (!time_after_eq(jiffies, max_wait_time));
 739
 740        if (mbox_status == MBOX_STS_COMMAND_COMPLETE) {
 741                DEBUG(printk(KERN_INFO "scsi%ld: %s: Firmware has started\n",
 742                             ha->host_no, __func__));
 743
 744                spin_lock_irqsave(&ha->hardware_lock, flags);
 745                writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
 746                       &ha->reg->ctrl_status);
 747                readl(&ha->reg->ctrl_status);
 748                spin_unlock_irqrestore(&ha->hardware_lock, flags);
 749
 750                status = QLA_SUCCESS;
 751        } else {
 752                printk(KERN_INFO "scsi%ld: %s: Boot firmware failed "
 753                       "-  mbox status 0x%x\n", ha->host_no, __func__,
 754                       mbox_status);
 755                status = QLA_ERROR;
 756        }
 757        return status;
 758}
 759
 760int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
 761{
 762#define QL4_LOCK_DRVR_WAIT      60
 763#define QL4_LOCK_DRVR_SLEEP     1
 764
 765        int drvr_wait = QL4_LOCK_DRVR_WAIT;
 766        while (drvr_wait) {
 767                if (ql4xxx_lock_drvr(a) == 0) {
 768                        ssleep(QL4_LOCK_DRVR_SLEEP);
 769                        if (drvr_wait) {
 770                                DEBUG2(printk("scsi%ld: %s: Waiting for "
 771                                              "Global Init Semaphore(%d)...\n",
 772                                              a->host_no,
 773                                              __func__, drvr_wait));
 774                        }
 775                        drvr_wait -= QL4_LOCK_DRVR_SLEEP;
 776                } else {
 777                        DEBUG2(printk("scsi%ld: %s: Global Init Semaphore "
 778                                      "acquired\n", a->host_no, __func__));
 779                        return QLA_SUCCESS;
 780                }
 781        }
 782        return QLA_ERROR;
 783}
 784
 785/**
 786 * qla4xxx_start_firmware - starts qla4xxx firmware
 787 * @ha: Pointer to host adapter structure.
 788 *
 789 * This routine performs the necessary steps to start the firmware for
 790 * the QLA4010 adapter.
 791 **/
 792int qla4xxx_start_firmware(struct scsi_qla_host *ha)
 793{
 794        unsigned long flags = 0;
 795        uint32_t mbox_status;
 796        int status = QLA_ERROR;
 797        int soft_reset = 1;
 798        int config_chip = 0;
 799
 800        if (is_qla4022(ha) | is_qla4032(ha))
 801                ql4xxx_set_mac_number(ha);
 802
 803        if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
 804                return QLA_ERROR;
 805
 806        spin_lock_irqsave(&ha->hardware_lock, flags);
 807
 808        DEBUG2(printk("scsi%ld: %s: port_ctrl   = 0x%08X\n", ha->host_no,
 809                      __func__, readw(isp_port_ctrl(ha))));
 810        DEBUG(printk("scsi%ld: %s: port_status = 0x%08X\n", ha->host_no,
 811                     __func__, readw(isp_port_status(ha))));
 812
 813        /* Is Hardware already initialized? */
 814        if ((readw(isp_port_ctrl(ha)) & 0x8000) != 0) {
 815                DEBUG(printk("scsi%ld: %s: Hardware has already been "
 816                             "initialized\n", ha->host_no, __func__));
 817
 818                /* Receive firmware boot acknowledgement */
 819                mbox_status = readw(&ha->reg->mailbox[0]);
 820
 821                DEBUG2(printk("scsi%ld: %s: H/W Config complete - mbox[0]= "
 822                              "0x%x\n", ha->host_no, __func__, mbox_status));
 823
 824                /* Is firmware already booted? */
 825                if (mbox_status == 0) {
 826                        /* F/W not running, must be config by net driver */
 827                        config_chip = 1;
 828                        soft_reset = 0;
 829                } else {
 830                        writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
 831                               &ha->reg->ctrl_status);
 832                        readl(&ha->reg->ctrl_status);
 833                        writel(set_rmask(CSR_SCSI_COMPLETION_INTR),
 834                               &ha->reg->ctrl_status);
 835                        readl(&ha->reg->ctrl_status);
 836                        spin_unlock_irqrestore(&ha->hardware_lock, flags);
 837                        if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
 838                                DEBUG2(printk("scsi%ld: %s: Get firmware "
 839                                              "state -- state = 0x%x\n",
 840                                              ha->host_no,
 841                                              __func__, ha->firmware_state));
 842                                /* F/W is running */
 843                                if (ha->firmware_state &
 844                                    FW_STATE_CONFIG_WAIT) {
 845                                        DEBUG2(printk("scsi%ld: %s: Firmware "
 846                                                      "in known state -- "
 847                                                      "config and "
 848                                                      "boot, state = 0x%x\n",
 849                                                      ha->host_no, __func__,
 850                                                      ha->firmware_state));
 851                                        config_chip = 1;
 852                                        soft_reset = 0;
 853                                }
 854                        } else {
 855                                DEBUG2(printk("scsi%ld: %s: Firmware in "
 856                                              "unknown state -- resetting,"
 857                                              " state = "
 858                                              "0x%x\n", ha->host_no, __func__,
 859                                              ha->firmware_state));
 860                        }
 861                        spin_lock_irqsave(&ha->hardware_lock, flags);
 862                }
 863        } else {
 864                DEBUG(printk("scsi%ld: %s: H/W initialization hasn't been "
 865                             "started - resetting\n", ha->host_no, __func__));
 866        }
 867        spin_unlock_irqrestore(&ha->hardware_lock, flags);
 868
 869        DEBUG(printk("scsi%ld: %s: Flags soft_rest=%d, config= %d\n ",
 870                     ha->host_no, __func__, soft_reset, config_chip));
 871        if (soft_reset) {
 872                DEBUG(printk("scsi%ld: %s: Issue Soft Reset\n", ha->host_no,
 873                             __func__));
 874                status = qla4xxx_soft_reset(ha);        /* NOTE: acquires drvr
 875                                                         * lock again, but ok */
 876                if (status == QLA_ERROR) {
 877                        DEBUG(printk("scsi%d: %s: Soft Reset failed!\n",
 878                                     ha->host_no, __func__));
 879                        ql4xxx_unlock_drvr(ha);
 880                        return QLA_ERROR;
 881                }
 882                config_chip = 1;
 883
 884                /* Reset clears the semaphore, so acquire again */
 885                if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
 886                        return QLA_ERROR;
 887        }
 888
 889        if (config_chip) {
 890                if ((status = qla4xxx_config_nvram(ha)) == QLA_SUCCESS)
 891                        status = qla4xxx_start_firmware_from_flash(ha);
 892        }
 893
 894        ql4xxx_unlock_drvr(ha);
 895        if (status == QLA_SUCCESS) {
 896                if (test_and_clear_bit(AF_GET_CRASH_RECORD, &ha->flags))
 897                        qla4xxx_get_crash_record(ha);
 898
 899                qla4xxx_init_rings(ha);
 900        } else {
 901                DEBUG(printk("scsi%ld: %s: Firmware has NOT started\n",
 902                             ha->host_no, __func__));
 903        }
 904        return status;
 905}
 906/**
 907 * qla4xxx_free_ddb_index - Free DDBs reserved by firmware
 908 * @ha: pointer to adapter structure
 909 *
 910 * Since firmware is not running in autoconnect mode the DDB indices should
 911 * be freed so that when login happens from user space there are free DDB
 912 * indices available.
 913 **/
 914void qla4xxx_free_ddb_index(struct scsi_qla_host *ha)
 915{
 916        int max_ddbs;
 917        int ret;
 918        uint32_t idx = 0, next_idx = 0;
 919        uint32_t state = 0, conn_err = 0;
 920
 921        max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
 922                                     MAX_DEV_DB_ENTRIES;
 923
 924        for (idx = 0; idx < max_ddbs; idx = next_idx) {
 925                ret = qla4xxx_get_fwddb_entry(ha, idx, NULL, 0, NULL,
 926                                              &next_idx, &state, &conn_err,
 927                                                NULL, NULL);
 928                if (ret == QLA_ERROR) {
 929                        next_idx++;
 930                        continue;
 931                }
 932                if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
 933                    state == DDB_DS_SESSION_FAILED) {
 934                        DEBUG2(ql4_printk(KERN_INFO, ha,
 935                                          "Freeing DDB index = 0x%x\n", idx));
 936                        ret = qla4xxx_clear_ddb_entry(ha, idx);
 937                        if (ret == QLA_ERROR)
 938                                ql4_printk(KERN_ERR, ha,
 939                                           "Unable to clear DDB index = "
 940                                           "0x%x\n", idx);
 941                }
 942                if (next_idx == 0)
 943                        break;
 944        }
 945}
 946
 947/**
 948 * qla4xxx_initialize_adapter - initiailizes hba
 949 * @ha: Pointer to host adapter structure.
 950 *
 951 * This routine parforms all of the steps necessary to initialize the adapter.
 952 *
 953 **/
 954int qla4xxx_initialize_adapter(struct scsi_qla_host *ha, int is_reset)
 955{
 956        int status = QLA_ERROR;
 957
 958        ha->eeprom_cmd_data = 0;
 959
 960        ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
 961        ha->isp_ops->pci_config(ha);
 962
 963        ha->isp_ops->disable_intrs(ha);
 964
 965        /* Initialize the Host adapter request/response queues and firmware */
 966        if (ha->isp_ops->start_firmware(ha) == QLA_ERROR)
 967                goto exit_init_hba;
 968
 969        /*
 970         * For ISP83XX, mailbox and IOCB interrupts are enabled separately.
 971         * Mailbox interrupts must be enabled prior to issuing any mailbox
 972         * command in order to prevent the possibility of losing interrupts
 973         * while switching from polling to interrupt mode. IOCB interrupts are
 974         * enabled via isp_ops->enable_intrs.
 975         */
 976        if (is_qla8032(ha) || is_qla8042(ha))
 977                qla4_83xx_enable_mbox_intrs(ha);
 978
 979        if (qla4xxx_about_firmware(ha) == QLA_ERROR)
 980                goto exit_init_hba;
 981
 982        if (ha->isp_ops->get_sys_info(ha) == QLA_ERROR)
 983                goto exit_init_hba;
 984
 985        qla4xxx_init_local_data(ha);
 986
 987        status = qla4xxx_init_firmware(ha);
 988        if (status == QLA_ERROR)
 989                goto exit_init_hba;
 990
 991        if (is_reset == RESET_ADAPTER)
 992                qla4xxx_build_ddb_list(ha, is_reset);
 993
 994        set_bit(AF_ONLINE, &ha->flags);
 995
 996exit_init_hba:
 997        DEBUG2(printk("scsi%ld: initialize adapter: %s\n", ha->host_no,
 998            status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
 999        return status;
1000}
1001
1002int qla4xxx_ddb_change(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
1003                       struct ddb_entry *ddb_entry, uint32_t state)
1004{
1005        uint32_t old_fw_ddb_device_state;
1006        int status = QLA_ERROR;
1007
1008        old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
1009        DEBUG2(ql4_printk(KERN_INFO, ha,
1010                          "%s: DDB - old state = 0x%x, new state = 0x%x for "
1011                          "index [%d]\n", __func__,
1012                          ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
1013
1014        ddb_entry->fw_ddb_device_state = state;
1015
1016        switch (old_fw_ddb_device_state) {
1017        case DDB_DS_LOGIN_IN_PROCESS:
1018                switch (state) {
1019                case DDB_DS_SESSION_ACTIVE:
1020                case DDB_DS_DISCOVERY:
1021                        qla4xxx_update_session_conn_param(ha, ddb_entry);
1022                        ddb_entry->unblock_sess(ddb_entry->sess);
1023                        status = QLA_SUCCESS;
1024                        break;
1025                case DDB_DS_SESSION_FAILED:
1026                case DDB_DS_NO_CONNECTION_ACTIVE:
1027                        iscsi_conn_login_event(ddb_entry->conn,
1028                                               ISCSI_CONN_STATE_FREE);
1029                        status = QLA_SUCCESS;
1030                        break;
1031                }
1032                break;
1033        case DDB_DS_SESSION_ACTIVE:
1034        case DDB_DS_DISCOVERY:
1035                switch (state) {
1036                case DDB_DS_SESSION_FAILED:
1037                        /*
1038                         * iscsi_session failure  will cause userspace to
1039                         * stop the connection which in turn would block the
1040                         * iscsi_session and start relogin
1041                         */
1042                        iscsi_session_failure(ddb_entry->sess->dd_data,
1043                                              ISCSI_ERR_CONN_FAILED);
1044                        status = QLA_SUCCESS;
1045                        break;
1046                case DDB_DS_NO_CONNECTION_ACTIVE:
1047                        clear_bit(fw_ddb_index, ha->ddb_idx_map);
1048                        status = QLA_SUCCESS;
1049                        break;
1050                }
1051                break;
1052        case DDB_DS_SESSION_FAILED:
1053                switch (state) {
1054                case DDB_DS_SESSION_ACTIVE:
1055                case DDB_DS_DISCOVERY:
1056                        ddb_entry->unblock_sess(ddb_entry->sess);
1057                        qla4xxx_update_session_conn_param(ha, ddb_entry);
1058                        status = QLA_SUCCESS;
1059                        break;
1060                case DDB_DS_SESSION_FAILED:
1061                        iscsi_session_failure(ddb_entry->sess->dd_data,
1062                                              ISCSI_ERR_CONN_FAILED);
1063                        status = QLA_SUCCESS;
1064                        break;
1065                }
1066                break;
1067        default:
1068                DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unknown Event\n",
1069                                __func__));
1070                break;
1071        }
1072        return status;
1073}
1074
1075void qla4xxx_arm_relogin_timer(struct ddb_entry *ddb_entry)
1076{
1077        /*
1078         * This triggers a relogin.  After the relogin_timer
1079         * expires, the relogin gets scheduled.  We must wait a
1080         * minimum amount of time since receiving an 0x8014 AEN
1081         * with failed device_state or a logout response before
1082         * we can issue another relogin.
1083         *
1084         * Firmware pads this timeout: (time2wait +1).
1085         * Driver retry to login should be longer than F/W.
1086         * Otherwise F/W will fail
1087         * set_ddb() mbx cmd with 0x4005 since it still
1088         * counting down its time2wait.
1089         */
1090        atomic_set(&ddb_entry->relogin_timer, 0);
1091        atomic_set(&ddb_entry->retry_relogin_timer,
1092                   ddb_entry->default_time2wait + 4);
1093
1094}
1095
1096int qla4xxx_flash_ddb_change(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
1097                             struct ddb_entry *ddb_entry, uint32_t state)
1098{
1099        uint32_t old_fw_ddb_device_state;
1100        int status = QLA_ERROR;
1101
1102        old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
1103        DEBUG2(ql4_printk(KERN_INFO, ha,
1104                          "%s: DDB - old state = 0x%x, new state = 0x%x for "
1105                          "index [%d]\n", __func__,
1106                          ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
1107
1108        ddb_entry->fw_ddb_device_state = state;
1109
1110        switch (old_fw_ddb_device_state) {
1111        case DDB_DS_LOGIN_IN_PROCESS:
1112        case DDB_DS_NO_CONNECTION_ACTIVE:
1113                switch (state) {
1114                case DDB_DS_SESSION_ACTIVE:
1115                        ddb_entry->unblock_sess(ddb_entry->sess);
1116                        qla4xxx_update_session_conn_fwddb_param(ha, ddb_entry);
1117                        status = QLA_SUCCESS;
1118                        break;
1119                case DDB_DS_SESSION_FAILED:
1120                        iscsi_block_session(ddb_entry->sess);
1121                        if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
1122                                qla4xxx_arm_relogin_timer(ddb_entry);
1123                        status = QLA_SUCCESS;
1124                        break;
1125                }
1126                break;
1127        case DDB_DS_SESSION_ACTIVE:
1128                switch (state) {
1129                case DDB_DS_SESSION_FAILED:
1130                        iscsi_block_session(ddb_entry->sess);
1131                        if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
1132                                qla4xxx_arm_relogin_timer(ddb_entry);
1133                        status = QLA_SUCCESS;
1134                        break;
1135                }
1136                break;
1137        case DDB_DS_SESSION_FAILED:
1138                switch (state) {
1139                case DDB_DS_SESSION_ACTIVE:
1140                        ddb_entry->unblock_sess(ddb_entry->sess);
1141                        qla4xxx_update_session_conn_fwddb_param(ha, ddb_entry);
1142                        status = QLA_SUCCESS;
1143                        break;
1144                case DDB_DS_SESSION_FAILED:
1145                        if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
1146                                qla4xxx_arm_relogin_timer(ddb_entry);
1147                        status = QLA_SUCCESS;
1148                        break;
1149                }
1150                break;
1151        default:
1152                DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unknown Event\n",
1153                                  __func__));
1154                break;
1155        }
1156        return status;
1157}
1158
1159/**
1160 * qla4xxx_process_ddb_changed - process ddb state change
1161 * @ha - Pointer to host adapter structure.
1162 * @fw_ddb_index - Firmware's device database index
1163 * @state - Device state
1164 *
1165 * This routine processes a Decive Database Changed AEN Event.
1166 **/
1167int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha,
1168                                uint32_t fw_ddb_index,
1169                                uint32_t state, uint32_t conn_err)
1170{
1171        struct ddb_entry *ddb_entry;
1172        int status = QLA_ERROR;
1173
1174        /* check for out of range index */
1175        if (fw_ddb_index >= MAX_DDB_ENTRIES)
1176                goto exit_ddb_event;
1177
1178        /* Get the corresponging ddb entry */
1179        ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
1180        /* Device does not currently exist in our database. */
1181        if (ddb_entry == NULL) {
1182                ql4_printk(KERN_ERR, ha, "%s: No ddb_entry at FW index [%d]\n",
1183                           __func__, fw_ddb_index);
1184
1185                if (state == DDB_DS_NO_CONNECTION_ACTIVE)
1186                        clear_bit(fw_ddb_index, ha->ddb_idx_map);
1187
1188                goto exit_ddb_event;
1189        }
1190
1191        ddb_entry->ddb_change(ha, fw_ddb_index, ddb_entry, state);
1192
1193exit_ddb_event:
1194        return status;
1195}
1196
1197/**
1198 * qla4xxx_login_flash_ddb - Login to target (DDB)
1199 * @cls_session: Pointer to the session to login
1200 *
1201 * This routine logins to the target.
1202 * Issues setddb and conn open mbx
1203 **/
1204void qla4xxx_login_flash_ddb(struct iscsi_cls_session *cls_session)
1205{
1206        struct iscsi_session *sess;
1207        struct ddb_entry *ddb_entry;
1208        struct scsi_qla_host *ha;
1209        struct dev_db_entry *fw_ddb_entry = NULL;
1210        dma_addr_t fw_ddb_dma;
1211        uint32_t mbx_sts = 0;
1212        int ret;
1213
1214        sess = cls_session->dd_data;
1215        ddb_entry = sess->dd_data;
1216        ha =  ddb_entry->ha;
1217
1218        if (!test_bit(AF_LINK_UP, &ha->flags))
1219                return;
1220
1221        if (ddb_entry->ddb_type != FLASH_DDB) {
1222                DEBUG2(ql4_printk(KERN_INFO, ha,
1223                                  "Skipping login to non FLASH DB"));
1224                goto exit_login;
1225        }
1226
1227        fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
1228                                      &fw_ddb_dma);
1229        if (fw_ddb_entry == NULL) {
1230                DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
1231                goto exit_login;
1232        }
1233
1234        if (ddb_entry->fw_ddb_index == INVALID_ENTRY) {
1235                ret = qla4xxx_get_ddb_index(ha, &ddb_entry->fw_ddb_index);
1236                if (ret == QLA_ERROR)
1237                        goto exit_login;
1238
1239                ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
1240                ha->tot_ddbs++;
1241        }
1242
1243        memcpy(fw_ddb_entry, &ddb_entry->fw_ddb_entry,
1244               sizeof(struct dev_db_entry));
1245        ddb_entry->sess->target_id = ddb_entry->fw_ddb_index;
1246
1247        ret = qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index,
1248                                    fw_ddb_dma, &mbx_sts);
1249        if (ret == QLA_ERROR) {
1250                DEBUG2(ql4_printk(KERN_ERR, ha, "Set DDB failed\n"));
1251                goto exit_login;
1252        }
1253
1254        ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
1255        ret = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
1256        if (ret == QLA_ERROR) {
1257                ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
1258                           sess->targetname);
1259                goto exit_login;
1260        }
1261
1262exit_login:
1263        if (fw_ddb_entry)
1264                dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
1265}
1266
1267