drivers/scsi/qla4xxx/ql4_init.c

   1 /*
   2  * QLogic iSCSI HBA Driver
   3  * Copyright (c)  2003-2013 QLogic Corporation
   4  *
   5  * See LICENSE.qla4xxx for copyright and licensing details.
   6  */
   7
   8 #include <scsi/iscsi_if.h>
   9 #include "ql4_def.h"
  10 #include "ql4_glbl.h"
  11 #include "ql4_dbg.h"
  12 #include "ql4_inline.h"
  13
  14 static void ql4xxx_set_mac_number(struct scsi_qla_host *ha)
  15 {
  16         uint32_t value;
  17         uint8_t func_number;
  18         unsigned long flags;
  19
  20         /* Get the function number */
  21         spin_lock_irqsave(&ha->hardware_lock, flags);
  22         value = readw(&ha->reg->ctrl_status);
  23         spin_unlock_irqrestore(&ha->hardware_lock, flags);
  24
  25         func_number = (uint8_t) ((value >> 4) & 0x30);
  26         switch (value & ISP_CONTROL_FN_MASK) {
  27         case ISP_CONTROL_FN0_SCSI:
  28                 ha->mac_index = 1;
  29                 break;
  30         case ISP_CONTROL_FN1_SCSI:
  31                 ha->mac_index = 3;
  32                 break;
  33         default:
  34                 DEBUG2(printk("scsi%ld: %s: Invalid function number, "
  35                               "ispControlStatus = 0x%x\n", ha->host_no,
  36                               __func__, value));
  37                 break;
  38         }
  39         DEBUG2(printk("scsi%ld: %s: mac_index %d.\n", ha->host_no, __func__,
  40                       ha->mac_index));
  41 }
  42
  43 /**
  44  * qla4xxx_free_ddb - deallocate ddb
  45  * @ha: pointer to host adapter structure.
  46  * @ddb_entry: pointer to device database entry
  47  *
  48  * This routine marks a DDB entry INVALID
  49  **/
  50 void qla4xxx_free_ddb(struct scsi_qla_host *ha,
  51     struct ddb_entry *ddb_entry)
  52 {
  53         /* Remove device pointer from index mapping arrays */
  54         ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] =
  55                 (struct ddb_entry *) INVALID_ENTRY;
  56         ha->tot_ddbs--;
  57 }
  58
  59 /**
  60  * qla4xxx_init_response_q_entries() - Initializes response queue entries.
  61  * @ha: HA context
  62  *
  63  * Beginning of request ring has initialization control block already built
  64  * by nvram config routine.
  65  **/
  66 static void qla4xxx_init_response_q_entries(struct scsi_qla_host *ha)
  67 {
  68         uint16_t cnt;
  69         struct response *pkt;
  70
  71         pkt = (struct response *)ha->response_ptr;
  72         for (cnt = 0; cnt < RESPONSE_QUEUE_DEPTH; cnt++) {
  73                 pkt->signature = RESPONSE_PROCESSED;
  74                 pkt++;
  75         }
  76 }
  77
  78 /**
  79  * qla4xxx_init_rings - initialize hw queues
  80  * @ha: pointer to host adapter structure.
  81  *
  82  * This routine initializes the internal queues for the specified adapter.
  83  * The QLA4010 requires us to restart the queues at index 0.
  84  * The QLA4000 doesn't care, so just default to QLA4010's requirement.
  85  **/
  86 int qla4xxx_init_rings(struct scsi_qla_host *ha)
  87 {
  88         unsigned long flags = 0;
  89         int i;
  90
  91         /* Initialize request queue. */
  92         spin_lock_irqsave(&ha->hardware_lock, flags);
  93         ha->request_out = 0;
  94         ha->request_in = 0;
  95         ha->request_ptr = &ha->request_ring[ha->request_in];
  96         ha->req_q_count = REQUEST_QUEUE_DEPTH;
  97
  98         /* Initialize response queue. */
  99         ha->response_in = 0;
 100         ha->response_out = 0;
 101         ha->response_ptr = &ha->response_ring[ha->response_out];
 102
 103         if (is_qla8022(ha)) {
 104                 writel(0,
 105                     (unsigned long  __iomem *)&ha->qla4_82xx_reg->req_q_out);
 106                 writel(0,
 107                     (unsigned long  __iomem *)&ha->qla4_82xx_reg->rsp_q_in);
 108                 writel(0,
 109                     (unsigned long  __iomem *)&ha->qla4_82xx_reg->rsp_q_out);
 110         } else if (is_qla8032(ha) || is_qla8042(ha)) {
 111                 writel(0,
 112                        (unsigned long __iomem *)&ha->qla4_83xx_reg->req_q_in);
 113                 writel(0,
 114                        (unsigned long __iomem *)&ha->qla4_83xx_reg->rsp_q_in);
 115                 writel(0,
 116                        (unsigned long __iomem *)&ha->qla4_83xx_reg->rsp_q_out);
 117         } else {
 118                 /*
 119                  * Initialize DMA Shadow registers.  The firmware is really
 120                  * supposed to take care of this, but on some uniprocessor
 121                  * systems, the shadow registers aren't cleared-- causing
 122                  * the interrupt_handler to think there are responses to be
 123                  * processed when there aren't.
 124                  */
 125                 ha->shadow_regs->req_q_out = __constant_cpu_to_le32(0);
 126                 ha->shadow_regs->rsp_q_in = __constant_cpu_to_le32(0);
 127                 wmb();
 128
 129                 writel(0, &ha->reg->req_q_in);
 130                 writel(0, &ha->reg->rsp_q_out);
 131                 readl(&ha->reg->rsp_q_out);
 132         }
 133
 134         qla4xxx_init_response_q_entries(ha);
 135
 136         /* Initialize mailbox active array */
 137         for (i = 0; i < MAX_MRB; i++)
 138                 ha->active_mrb_array[i] = NULL;
 139
 140         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 141
 142         return QLA_SUCCESS;
 143 }
 144
 145 /**
 146  * qla4xxx_get_sys_info - validate adapter MAC address(es)
 147  * @ha: pointer to host adapter structure.
 148  *
 149  **/
 150 int qla4xxx_get_sys_info(struct scsi_qla_host *ha)
 151 {
 152         struct flash_sys_info *sys_info;
 153         dma_addr_t sys_info_dma;
 154         int status = QLA_ERROR;
 155
 156         sys_info = dma_alloc_coherent(&ha->pdev->dev, sizeof(*sys_info),
 157                                       &sys_info_dma, GFP_KERNEL);
 158         if (sys_info == NULL) {
 159                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
 160                               ha->host_no, __func__));
 161
 162                 goto exit_get_sys_info_no_free;
 163         }
 164
 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
 184 exit_get_sys_info:
 185         dma_free_coherent(&ha->pdev->dev, sizeof(*sys_info), sys_info,
 186                           sys_info_dma);
 187
 188 exit_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  **/
 197 static 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
 203 static uint8_t
 204 qla4xxx_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
 284 static 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  **/
 307 void 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
 399 alloc_cleanup:
 400         dma_free_coherent(&ha->pdev->dev, ha->fw_dump_tmplt_size,
 401                           md_tmp, md_tmp_dma);
 402 }
 403
 404 static 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  **/
 552 static 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
 582 static 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
 597 static 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  */
 656 void qla4_8xxx_pci_config(struct scsi_qla_host *ha)
 657 {
 658         pci_set_master(ha->pdev);
 659 }
 660
 661 void 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
 681 static 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
 760 int 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                         DEBUG2(printk("scsi%ld: %s: Waiting for "
 770                                       "Global Init Semaphore(%d)...\n",
 771                                       a->host_no,
 772                                       __func__, drvr_wait));
 773                         drvr_wait -= QL4_LOCK_DRVR_SLEEP;
 774                 } else {
 775                         DEBUG2(printk("scsi%ld: %s: Global Init Semaphore "
 776                                       "acquired\n", a->host_no, __func__));
 777                         return QLA_SUCCESS;
 778                 }
 779         }
 780         return QLA_ERROR;
 781 }
 782
 783 /**
 784  * qla4xxx_start_firmware - starts qla4xxx firmware
 785  * @ha: Pointer to host adapter structure.
 786  *
 787  * This routine performs the necessary steps to start the firmware for
 788  * the QLA4010 adapter.
 789  **/
 790 int qla4xxx_start_firmware(struct scsi_qla_host *ha)
 791 {
 792         unsigned long flags = 0;
 793         uint32_t mbox_status;
 794         int status = QLA_ERROR;
 795         int soft_reset = 1;
 796         int config_chip = 0;
 797
 798         if (is_qla4022(ha) | is_qla4032(ha))
 799                 ql4xxx_set_mac_number(ha);
 800
 801         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
 802                 return QLA_ERROR;
 803
 804         spin_lock_irqsave(&ha->hardware_lock, flags);
 805
 806         DEBUG2(printk("scsi%ld: %s: port_ctrl   = 0x%08X\n", ha->host_no,
 807                       __func__, readw(isp_port_ctrl(ha))));
 808         DEBUG(printk("scsi%ld: %s: port_status = 0x%08X\n", ha->host_no,
 809                      __func__, readw(isp_port_status(ha))));
 810
 811         /* Is Hardware already initialized? */
 812         if ((readw(isp_port_ctrl(ha)) & 0x8000) != 0) {
 813                 DEBUG(printk("scsi%ld: %s: Hardware has already been "
 814                              "initialized\n", ha->host_no, __func__));
 815
 816                 /* Receive firmware boot acknowledgement */
 817                 mbox_status = readw(&ha->reg->mailbox[0]);
 818
 819                 DEBUG2(printk("scsi%ld: %s: H/W Config complete - mbox[0]= "
 820                               "0x%x\n", ha->host_no, __func__, mbox_status));
 821
 822                 /* Is firmware already booted? */
 823                 if (mbox_status == 0) {
 824                         /* F/W not running, must be config by net driver */
 825                         config_chip = 1;
 826                         soft_reset = 0;
 827                 } else {
 828                         writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
 829                                &ha->reg->ctrl_status);
 830                         readl(&ha->reg->ctrl_status);
 831                         writel(set_rmask(CSR_SCSI_COMPLETION_INTR),
 832                                &ha->reg->ctrl_status);
 833                         readl(&ha->reg->ctrl_status);
 834                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 835                         if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
 836                                 DEBUG2(printk("scsi%ld: %s: Get firmware "
 837                                               "state -- state = 0x%x\n",
 838                                               ha->host_no,
 839                                               __func__, ha->firmware_state));
 840                                 /* F/W is running */
 841                                 if (ha->firmware_state &
 842                                     FW_STATE_CONFIG_WAIT) {
 843                                         DEBUG2(printk("scsi%ld: %s: Firmware "
 844                                                       "in known state -- "
 845                                                       "config and "
 846                                                       "boot, state = 0x%x\n",
 847                                                       ha->host_no, __func__,
 848                                                       ha->firmware_state));
 849                                         config_chip = 1;
 850                                         soft_reset = 0;
 851                                 }
 852                         } else {
 853                                 DEBUG2(printk("scsi%ld: %s: Firmware in "
 854                                               "unknown state -- resetting,"
 855                                               " state = "
 856                                               "0x%x\n", ha->host_no, __func__,
 857                                               ha->firmware_state));
 858                         }
 859                         spin_lock_irqsave(&ha->hardware_lock, flags);
 860                 }
 861         } else {
 862                 DEBUG(printk("scsi%ld: %s: H/W initialization hasn't been "
 863                              "started - resetting\n", ha->host_no, __func__));
 864         }
 865         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 866
 867         DEBUG(printk("scsi%ld: %s: Flags soft_rest=%d, config= %d\n ",
 868                      ha->host_no, __func__, soft_reset, config_chip));
 869         if (soft_reset) {
 870                 DEBUG(printk("scsi%ld: %s: Issue Soft Reset\n", ha->host_no,
 871                              __func__));
 872                 status = qla4xxx_soft_reset(ha);        /* NOTE: acquires drvr
 873                                                          * lock again, but ok */
 874                 if (status == QLA_ERROR) {
 875                         DEBUG(printk("scsi%d: %s: Soft Reset failed!\n",
 876                                      ha->host_no, __func__));
 877                         ql4xxx_unlock_drvr(ha);
 878                         return QLA_ERROR;
 879                 }
 880                 config_chip = 1;
 881
 882                 /* Reset clears the semaphore, so acquire again */
 883                 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
 884                         return QLA_ERROR;
 885         }
 886
 887         if (config_chip) {
 888                 if ((status = qla4xxx_config_nvram(ha)) == QLA_SUCCESS)
 889                         status = qla4xxx_start_firmware_from_flash(ha);
 890         }
 891
 892         ql4xxx_unlock_drvr(ha);
 893         if (status == QLA_SUCCESS) {
 894                 if (test_and_clear_bit(AF_GET_CRASH_RECORD, &ha->flags))
 895                         qla4xxx_get_crash_record(ha);
 896
 897                 qla4xxx_init_rings(ha);
 898         } else {
 899                 DEBUG(printk("scsi%ld: %s: Firmware has NOT started\n",
 900                              ha->host_no, __func__));
 901         }
 902         return status;
 903 }
 904 /**
 905  * qla4xxx_free_ddb_index - Free DDBs reserved by firmware
 906  * @ha: pointer to adapter structure
 907  *
 908  * Since firmware is not running in autoconnect mode the DDB indices should
 909  * be freed so that when login happens from user space there are free DDB
 910  * indices available.
 911  **/
 912 void qla4xxx_free_ddb_index(struct scsi_qla_host *ha)
 913 {
 914         int max_ddbs;
 915         int ret;
 916         uint32_t idx = 0, next_idx = 0;
 917         uint32_t state = 0, conn_err = 0;
 918
 919         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
 920                                      MAX_DEV_DB_ENTRIES;
 921
 922         for (idx = 0; idx < max_ddbs; idx = next_idx) {
 923                 ret = qla4xxx_get_fwddb_entry(ha, idx, NULL, 0, NULL,
 924                                               &next_idx, &state, &conn_err,
 925                                                 NULL, NULL);
 926                 if (ret == QLA_ERROR) {
 927                         next_idx++;
 928                         continue;
 929                 }
 930                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
 931                     state == DDB_DS_SESSION_FAILED) {
 932                         DEBUG2(ql4_printk(KERN_INFO, ha,
 933                                           "Freeing DDB index = 0x%x\n", idx));
 934                         ret = qla4xxx_clear_ddb_entry(ha, idx);
 935                         if (ret == QLA_ERROR)
 936                                 ql4_printk(KERN_ERR, ha,
 937                                            "Unable to clear DDB index = "
 938                                            "0x%x\n", idx);
 939                 }
 940                 if (next_idx == 0)
 941                         break;
 942         }
 943 }
 944
 945 /**
 946  * qla4xxx_initialize_adapter - initiailizes hba
 947  * @ha: Pointer to host adapter structure.
 948  *
 949  * This routine parforms all of the steps necessary to initialize the adapter.
 950  *
 951  **/
 952 int qla4xxx_initialize_adapter(struct scsi_qla_host *ha, int is_reset)
 953 {
 954         int status = QLA_ERROR;
 955
 956         ha->eeprom_cmd_data = 0;
 957
 958         ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
 959         ha->isp_ops->pci_config(ha);
 960
 961         ha->isp_ops->disable_intrs(ha);
 962
 963         /* Initialize the Host adapter request/response queues and firmware */
 964         if (ha->isp_ops->start_firmware(ha) == QLA_ERROR)
 965                 goto exit_init_hba;
 966
 967         /*
 968          * For ISP83XX, mailbox and IOCB interrupts are enabled separately.
 969          * Mailbox interrupts must be enabled prior to issuing any mailbox
 970          * command in order to prevent the possibility of losing interrupts
 971          * while switching from polling to interrupt mode. IOCB interrupts are
 972          * enabled via isp_ops->enable_intrs.
 973          */
 974         if (is_qla8032(ha) || is_qla8042(ha))
 975                 qla4_83xx_enable_mbox_intrs(ha);
 976
 977         if (qla4xxx_about_firmware(ha) == QLA_ERROR)
 978                 goto exit_init_hba;
 979
 980         if (ha->isp_ops->get_sys_info(ha) == QLA_ERROR)
 981                 goto exit_init_hba;
 982
 983         qla4xxx_init_local_data(ha);
 984
 985         status = qla4xxx_init_firmware(ha);
 986         if (status == QLA_ERROR)
 987                 goto exit_init_hba;
 988
 989         if (is_reset == RESET_ADAPTER)
 990                 qla4xxx_build_ddb_list(ha, is_reset);
 991
 992         set_bit(AF_ONLINE, &ha->flags);
 993
 994 exit_init_hba:
 995         DEBUG2(printk("scsi%ld: initialize adapter: %s\n", ha->host_no,
 996             status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
 997         return status;
 998 }
 999
1000 int qla4xxx_ddb_change(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
1001                        struct ddb_entry *ddb_entry, uint32_t state)
1002 {
1003         uint32_t old_fw_ddb_device_state;
1004         int status = QLA_ERROR;
1005
1006         old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
1007         DEBUG2(ql4_printk(KERN_INFO, ha,
1008                           "%s: DDB - old state = 0x%x, new state = 0x%x for "
1009                           "index [%d]\n", __func__,
1010                           ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
1011
1012         ddb_entry->fw_ddb_device_state = state;
1013
1014         switch (old_fw_ddb_device_state) {
1015         case DDB_DS_LOGIN_IN_PROCESS:
1016                 switch (state) {
1017                 case DDB_DS_SESSION_ACTIVE:
1018                 case DDB_DS_DISCOVERY:
1019                         qla4xxx_update_session_conn_param(ha, ddb_entry);
1020                         ddb_entry->unblock_sess(ddb_entry->sess);
1021                         status = QLA_SUCCESS;
1022                         break;
1023                 case DDB_DS_SESSION_FAILED:
1024                 case DDB_DS_NO_CONNECTION_ACTIVE:
1025                         iscsi_conn_login_event(ddb_entry->conn,
1026                                                ISCSI_CONN_STATE_FREE);
1027                         status = QLA_SUCCESS;
1028                         break;
1029                 }
1030                 break;
1031         case DDB_DS_SESSION_ACTIVE:
1032         case DDB_DS_DISCOVERY:
1033                 switch (state) {
1034                 case DDB_DS_SESSION_FAILED:
1035                         /*
1036                          * iscsi_session failure  will cause userspace to
1037                          * stop the connection which in turn would block the
1038                          * iscsi_session and start relogin
1039                          */
1040                         iscsi_session_failure(ddb_entry->sess->dd_data,
1041                                               ISCSI_ERR_CONN_FAILED);
1042                         status = QLA_SUCCESS;
1043                         break;
1044                 case DDB_DS_NO_CONNECTION_ACTIVE:
1045                         clear_bit(fw_ddb_index, ha->ddb_idx_map);
1046                         status = QLA_SUCCESS;
1047                         break;
1048                 }
1049                 break;
1050         case DDB_DS_SESSION_FAILED:
1051                 switch (state) {
1052                 case DDB_DS_SESSION_ACTIVE:
1053                 case DDB_DS_DISCOVERY:
1054                         ddb_entry->unblock_sess(ddb_entry->sess);
1055                         qla4xxx_update_session_conn_param(ha, ddb_entry);
1056                         status = QLA_SUCCESS;
1057                         break;
1058                 case DDB_DS_SESSION_FAILED:
1059                         iscsi_session_failure(ddb_entry->sess->dd_data,
1060                                               ISCSI_ERR_CONN_FAILED);
1061                         status = QLA_SUCCESS;
1062                         break;
1063                 }
1064                 break;
1065         default:
1066                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unknown Event\n",
1067                                 __func__));
1068                 break;
1069         }
1070         return status;
1071 }
1072
1073 void qla4xxx_arm_relogin_timer(struct ddb_entry *ddb_entry)
1074 {
1075         /*
1076          * This triggers a relogin.  After the relogin_timer
1077          * expires, the relogin gets scheduled.  We must wait a
1078          * minimum amount of time since receiving an 0x8014 AEN
1079          * with failed device_state or a logout response before
1080          * we can issue another relogin.
1081          *
1082          * Firmware pads this timeout: (time2wait +1).
1083          * Driver retry to login should be longer than F/W.
1084          * Otherwise F/W will fail
1085          * set_ddb() mbx cmd with 0x4005 since it still
1086          * counting down its time2wait.
1087          */
1088         atomic_set(&ddb_entry->relogin_timer, 0);
1089         atomic_set(&ddb_entry->retry_relogin_timer,
1090                    ddb_entry->default_time2wait + 4);
1091
1092 }
1093
1094 int qla4xxx_flash_ddb_change(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
1095                              struct ddb_entry *ddb_entry, uint32_t state)
1096 {
1097         uint32_t old_fw_ddb_device_state;
1098         int status = QLA_ERROR;
1099
1100         old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
1101         DEBUG2(ql4_printk(KERN_INFO, ha,
1102                           "%s: DDB - old state = 0x%x, new state = 0x%x for "
1103                           "index [%d]\n", __func__,
1104                           ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
1105
1106         ddb_entry->fw_ddb_device_state = state;
1107
1108         switch (old_fw_ddb_device_state) {
1109         case DDB_DS_LOGIN_IN_PROCESS:
1110         case DDB_DS_NO_CONNECTION_ACTIVE:
1111                 switch (state) {
1112                 case DDB_DS_SESSION_ACTIVE:
1113                         ddb_entry->unblock_sess(ddb_entry->sess);
1114                         qla4xxx_update_session_conn_fwddb_param(ha, ddb_entry);
1115                         status = QLA_SUCCESS;
1116                         break;
1117                 case DDB_DS_SESSION_FAILED:
1118                         iscsi_block_session(ddb_entry->sess);
1119                         if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
1120                                 qla4xxx_arm_relogin_timer(ddb_entry);
1121                         status = QLA_SUCCESS;
1122                         break;
1123                 }
1124                 break;
1125         case DDB_DS_SESSION_ACTIVE:
1126                 switch (state) {
1127                 case DDB_DS_SESSION_FAILED:
1128                         iscsi_block_session(ddb_entry->sess);
1129                         if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
1130                                 qla4xxx_arm_relogin_timer(ddb_entry);
1131                         status = QLA_SUCCESS;
1132                         break;
1133                 }
1134                 break;
1135         case DDB_DS_SESSION_FAILED:
1136                 switch (state) {
1137                 case DDB_DS_SESSION_ACTIVE:
1138                         ddb_entry->unblock_sess(ddb_entry->sess);
1139                         qla4xxx_update_session_conn_fwddb_param(ha, ddb_entry);
1140                         status = QLA_SUCCESS;
1141                         break;
1142                 case DDB_DS_SESSION_FAILED:
1143                         if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
1144                                 qla4xxx_arm_relogin_timer(ddb_entry);
1145                         status = QLA_SUCCESS;
1146                         break;
1147                 }
1148                 break;
1149         default:
1150                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unknown Event\n",
1151                                   __func__));
1152                 break;
1153         }
1154         return status;
1155 }
1156
1157 /**
1158  * qla4xxx_process_ddb_changed - process ddb state change
1159  * @ha - Pointer to host adapter structure.
1160  * @fw_ddb_index - Firmware's device database index
1161  * @state - Device state
1162  *
1163  * This routine processes a Decive Database Changed AEN Event.
1164  **/
1165 int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha,
1166                                 uint32_t fw_ddb_index,
1167                                 uint32_t state, uint32_t conn_err)
1168 {
1169         struct ddb_entry *ddb_entry;
1170         int status = QLA_ERROR;
1171
1172         /* check for out of range index */
1173         if (fw_ddb_index >= MAX_DDB_ENTRIES)
1174                 goto exit_ddb_event;
1175
1176         /* Get the corresponging ddb entry */
1177         ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
1178         /* Device does not currently exist in our database. */
1179         if (ddb_entry == NULL) {
1180                 ql4_printk(KERN_ERR, ha, "%s: No ddb_entry at FW index [%d]\n",
1181                            __func__, fw_ddb_index);
1182
1183                 if (state == DDB_DS_NO_CONNECTION_ACTIVE)
1184                         clear_bit(fw_ddb_index, ha->ddb_idx_map);
1185
1186                 goto exit_ddb_event;
1187         }
1188
1189         ddb_entry->ddb_change(ha, fw_ddb_index, ddb_entry, state);
1190
1191 exit_ddb_event:
1192         return status;
1193 }
1194
1195 /**
1196  * qla4xxx_login_flash_ddb - Login to target (DDB)
1197  * @cls_session: Pointer to the session to login
1198  *
1199  * This routine logins to the target.
1200  * Issues setddb and conn open mbx
1201  **/
1202 void qla4xxx_login_flash_ddb(struct iscsi_cls_session *cls_session)
1203 {
1204         struct iscsi_session *sess;
1205         struct ddb_entry *ddb_entry;
1206         struct scsi_qla_host *ha;
1207         struct dev_db_entry *fw_ddb_entry = NULL;
1208         dma_addr_t fw_ddb_dma;
1209         uint32_t mbx_sts = 0;
1210         int ret;
1211
1212         sess = cls_session->dd_data;
1213         ddb_entry = sess->dd_data;
1214         ha =  ddb_entry->ha;
1215
1216         if (!test_bit(AF_LINK_UP, &ha->flags))
1217                 return;
1218
1219         if (ddb_entry->ddb_type != FLASH_DDB) {
1220                 DEBUG2(ql4_printk(KERN_INFO, ha,
1221                                   "Skipping login to non FLASH DB"));
1222                 goto exit_login;
1223         }
1224
1225         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
1226                                       &fw_ddb_dma);
1227         if (fw_ddb_entry == NULL) {
1228                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
1229                 goto exit_login;
1230         }
1231
1232         if (ddb_entry->fw_ddb_index == INVALID_ENTRY) {
1233                 ret = qla4xxx_get_ddb_index(ha, &ddb_entry->fw_ddb_index);
1234                 if (ret == QLA_ERROR)
1235                         goto exit_login;
1236
1237                 ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
1238                 ha->tot_ddbs++;
1239         }
1240
1241         memcpy(fw_ddb_entry, &ddb_entry->fw_ddb_entry,
1242                sizeof(struct dev_db_entry));
1243         ddb_entry->sess->target_id = ddb_entry->fw_ddb_index;
1244
1245         ret = qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index,
1246                                     fw_ddb_dma, &mbx_sts);
1247         if (ret == QLA_ERROR) {
1248                 DEBUG2(ql4_printk(KERN_ERR, ha, "Set DDB failed\n"));
1249                 goto exit_login;
1250         }
1251
1252         ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
1253         ret = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
1254         if (ret == QLA_ERROR) {
1255                 ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
1256                            sess->targetname);
1257                 goto exit_login;
1258         }
1259
1260 exit_login:
1261         if (fw_ddb_entry)
1262                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
1263 }
1264