drivers/scsi/qla4xxx/ql4_init.c

   1 /*
   2  * QLogic iSCSI HBA Driver
   3  * Copyright (c)  2003-2010 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
  90         /* Initialize request queue. */
  91         spin_lock_irqsave(&ha->hardware_lock, flags);
  92         ha->request_out = 0;
  93         ha->request_in = 0;
  94         ha->request_ptr = &ha->request_ring[ha->request_in];
  95         ha->req_q_count = REQUEST_QUEUE_DEPTH;
  96
  97         /* Initialize response queue. */
  98         ha->response_in = 0;
  99         ha->response_out = 0;
 100         ha->response_ptr = &ha->response_ring[ha->response_out];
 101
 102         if (is_qla8022(ha)) {
 103                 writel(0,
 104                     (unsigned long  __iomem *)&ha->qla4_8xxx_reg->req_q_out);
 105                 writel(0,
 106                     (unsigned long  __iomem *)&ha->qla4_8xxx_reg->rsp_q_in);
 107                 writel(0,
 108                     (unsigned long  __iomem *)&ha->qla4_8xxx_reg->rsp_q_out);
 109         } else {
 110                 /*
 111                  * Initialize DMA Shadow registers.  The firmware is really
 112                  * supposed to take care of this, but on some uniprocessor
 113                  * systems, the shadow registers aren't cleared-- causing
 114                  * the interrupt_handler to think there are responses to be
 115                  * processed when there aren't.
 116                  */
 117                 ha->shadow_regs->req_q_out = __constant_cpu_to_le32(0);
 118                 ha->shadow_regs->rsp_q_in = __constant_cpu_to_le32(0);
 119                 wmb();
 120
 121                 writel(0, &ha->reg->req_q_in);
 122                 writel(0, &ha->reg->rsp_q_out);
 123                 readl(&ha->reg->rsp_q_out);
 124         }
 125
 126         qla4xxx_init_response_q_entries(ha);
 127
 128         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 129
 130         return QLA_SUCCESS;
 131 }
 132
 133 /**
 134  * qla4xxx_get_sys_info - validate adapter MAC address(es)
 135  * @ha: pointer to host adapter structure.
 136  *
 137  **/
 138 int qla4xxx_get_sys_info(struct scsi_qla_host *ha)
 139 {
 140         struct flash_sys_info *sys_info;
 141         dma_addr_t sys_info_dma;
 142         int status = QLA_ERROR;
 143
 144         sys_info = dma_alloc_coherent(&ha->pdev->dev, sizeof(*sys_info),
 145                                       &sys_info_dma, GFP_KERNEL);
 146         if (sys_info == NULL) {
 147                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
 148                               ha->host_no, __func__));
 149
 150                 goto exit_get_sys_info_no_free;
 151         }
 152         memset(sys_info, 0, sizeof(*sys_info));
 153
 154         /* Get flash sys info */
 155         if (qla4xxx_get_flash(ha, sys_info_dma, FLASH_OFFSET_SYS_INFO,
 156                               sizeof(*sys_info)) != QLA_SUCCESS) {
 157                 DEBUG2(printk("scsi%ld: %s: get_flash FLASH_OFFSET_SYS_INFO "
 158                               "failed\n", ha->host_no, __func__));
 159
 160                 goto exit_get_sys_info;
 161         }
 162
 163         /* Save M.A.C. address & serial_number */
 164         memcpy(ha->my_mac, &sys_info->physAddr[0].address[0],
 165                min(sizeof(ha->my_mac),
 166                    sizeof(sys_info->physAddr[0].address)));
 167         memcpy(ha->serial_number, &sys_info->acSerialNumber,
 168                min(sizeof(ha->serial_number),
 169                    sizeof(sys_info->acSerialNumber)));
 170
 171         status = QLA_SUCCESS;
 172
 173 exit_get_sys_info:
 174         dma_free_coherent(&ha->pdev->dev, sizeof(*sys_info), sys_info,
 175                           sys_info_dma);
 176
 177 exit_get_sys_info_no_free:
 178         return status;
 179 }
 180
 181 /**
 182  * qla4xxx_init_local_data - initialize adapter specific local data
 183  * @ha: pointer to host adapter structure.
 184  *
 185  **/
 186 static int qla4xxx_init_local_data(struct scsi_qla_host *ha)
 187 {
 188         /* Initialize aen queue */
 189         ha->aen_q_count = MAX_AEN_ENTRIES;
 190
 191         return qla4xxx_get_firmware_status(ha);
 192 }
 193
 194 static uint8_t
 195 qla4xxx_wait_for_ip_config(struct scsi_qla_host *ha)
 196 {
 197         uint8_t ipv4_wait = 0;
 198         uint8_t ipv6_wait = 0;
 199         int8_t ip_address[IPv6_ADDR_LEN] = {0} ;
 200
 201         /* If both IPv4 & IPv6 are enabled, possibly only one
 202          * IP address may be acquired, so check to see if we
 203          * need to wait for another */
 204         if (is_ipv4_enabled(ha) && is_ipv6_enabled(ha)) {
 205                 if (((ha->addl_fw_state & FW_ADDSTATE_DHCPv4_ENABLED) != 0) &&
 206                     ((ha->addl_fw_state &
 207                                     FW_ADDSTATE_DHCPv4_LEASE_ACQUIRED) == 0)) {
 208                         ipv4_wait = 1;
 209                 }
 210                 if (((ha->ip_config.ipv6_addl_options &
 211                       IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) != 0) &&
 212                     ((ha->ip_config.ipv6_link_local_state ==
 213                       IP_ADDRSTATE_ACQUIRING) ||
 214                      (ha->ip_config.ipv6_addr0_state ==
 215                       IP_ADDRSTATE_ACQUIRING) ||
 216                      (ha->ip_config.ipv6_addr1_state ==
 217                       IP_ADDRSTATE_ACQUIRING))) {
 218
 219                         ipv6_wait = 1;
 220
 221                         if ((ha->ip_config.ipv6_link_local_state ==
 222                              IP_ADDRSTATE_PREFERRED) ||
 223                             (ha->ip_config.ipv6_addr0_state ==
 224                              IP_ADDRSTATE_PREFERRED) ||
 225                             (ha->ip_config.ipv6_addr1_state ==
 226                              IP_ADDRSTATE_PREFERRED)) {
 227                                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
 228                                               "Preferred IP configured."
 229                                               " Don't wait!\n", ha->host_no,
 230                                               __func__));
 231                                 ipv6_wait = 0;
 232                         }
 233                         if (memcmp(&ha->ip_config.ipv6_default_router_addr,
 234                                    ip_address, IPv6_ADDR_LEN) == 0) {
 235                                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
 236                                               "No Router configured. "
 237                                               "Don't wait!\n", ha->host_no,
 238                                               __func__));
 239                                 ipv6_wait = 0;
 240                         }
 241                         if ((ha->ip_config.ipv6_default_router_state ==
 242                              IPV6_RTRSTATE_MANUAL) &&
 243                             (ha->ip_config.ipv6_link_local_state ==
 244                              IP_ADDRSTATE_TENTATIVE) &&
 245                             (memcmp(&ha->ip_config.ipv6_link_local_addr,
 246                              &ha->ip_config.ipv6_default_router_addr, 4) ==
 247                              0)) {
 248                                 DEBUG2(printk("scsi%ld: %s: LinkLocal Router & "
 249                                         "IP configured. Don't wait!\n",
 250                                         ha->host_no, __func__));
 251                                 ipv6_wait = 0;
 252                         }
 253                 }
 254                 if (ipv4_wait || ipv6_wait) {
 255                         DEBUG2(printk("scsi%ld: %s: Wait for additional "
 256                                       "IP(s) \"", ha->host_no, __func__));
 257                         if (ipv4_wait)
 258                                 DEBUG2(printk("IPv4 "));
 259                         if (ha->ip_config.ipv6_link_local_state ==
 260                             IP_ADDRSTATE_ACQUIRING)
 261                                 DEBUG2(printk("IPv6LinkLocal "));
 262                         if (ha->ip_config.ipv6_addr0_state ==
 263                             IP_ADDRSTATE_ACQUIRING)
 264                                 DEBUG2(printk("IPv6Addr0 "));
 265                         if (ha->ip_config.ipv6_addr1_state ==
 266                             IP_ADDRSTATE_ACQUIRING)
 267                                 DEBUG2(printk("IPv6Addr1 "));
 268                         DEBUG2(printk("\"\n"));
 269                 }
 270         }
 271
 272         return ipv4_wait|ipv6_wait;
 273 }
 274
 275 static int qla4xxx_fw_ready(struct scsi_qla_host *ha)
 276 {
 277         uint32_t timeout_count;
 278         int ready = 0;
 279
 280         DEBUG2(ql4_printk(KERN_INFO, ha, "Waiting for Firmware Ready..\n"));
 281         for (timeout_count = ADAPTER_INIT_TOV; timeout_count > 0;
 282              timeout_count--) {
 283                 if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
 284                         qla4xxx_get_dhcp_ip_address(ha);
 285
 286                 /* Get firmware state. */
 287                 if (qla4xxx_get_firmware_state(ha) != QLA_SUCCESS) {
 288                         DEBUG2(printk("scsi%ld: %s: unable to get firmware "
 289                                       "state\n", ha->host_no, __func__));
 290                         break;
 291                 }
 292
 293                 if (ha->firmware_state & FW_STATE_ERROR) {
 294                         DEBUG2(printk("scsi%ld: %s: an unrecoverable error has"
 295                                       " occurred\n", ha->host_no, __func__));
 296                         break;
 297
 298                 }
 299                 if (ha->firmware_state & FW_STATE_CONFIG_WAIT) {
 300                         /*
 301                          * The firmware has not yet been issued an Initialize
 302                          * Firmware command, so issue it now.
 303                          */
 304                         if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR)
 305                                 break;
 306
 307                         /* Go back and test for ready state - no wait. */
 308                         continue;
 309                 }
 310
 311                 if (ha->firmware_state & FW_STATE_WAIT_AUTOCONNECT) {
 312                         DEBUG2(printk(KERN_INFO "scsi%ld: %s: fwstate:"
 313                                       "AUTOCONNECT in progress\n",
 314                                       ha->host_no, __func__));
 315                 }
 316
 317                 if (ha->firmware_state & FW_STATE_CONFIGURING_IP) {
 318                         DEBUG2(printk(KERN_INFO "scsi%ld: %s: fwstate:"
 319                                       " CONFIGURING IP\n",
 320                                       ha->host_no, __func__));
 321                         /*
 322                          * Check for link state after 15 secs and if link is
 323                          * still DOWN then, cable is unplugged. Ignore "DHCP
 324                          * in Progress/CONFIGURING IP" bit to check if firmware
 325                          * is in ready state or not after 15 secs.
 326                          * This is applicable for both 2.x & 3.x firmware
 327                          */
 328                         if (timeout_count <= (ADAPTER_INIT_TOV - 15)) {
 329                                 if (ha->addl_fw_state & FW_ADDSTATE_LINK_UP) {
 330                                         DEBUG2(printk(KERN_INFO "scsi%ld: %s:"
 331                                                   " LINK UP (Cable plugged)\n",
 332                                                   ha->host_no, __func__));
 333                                 } else if (ha->firmware_state &
 334                                           (FW_STATE_CONFIGURING_IP |
 335                                                              FW_STATE_READY)) {
 336                                         DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
 337                                                 "LINK DOWN (Cable unplugged)\n",
 338                                                 ha->host_no, __func__));
 339                                         ha->firmware_state = FW_STATE_READY;
 340                                 }
 341                         }
 342                 }
 343
 344                 if (ha->firmware_state == FW_STATE_READY) {
 345                         /* If DHCP IP Addr is available, retrieve it now. */
 346                         if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR,
 347                                                                 &ha->dpc_flags))
 348                                 qla4xxx_get_dhcp_ip_address(ha);
 349
 350                         if (!qla4xxx_wait_for_ip_config(ha) ||
 351                                                         timeout_count == 1) {
 352                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 353                                     "Firmware Ready..\n"));
 354                                 /* The firmware is ready to process SCSI
 355                                    commands. */
 356                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 357                                         "scsi%ld: %s: MEDIA TYPE"
 358                                         " - %s\n", ha->host_no,
 359                                         __func__, (ha->addl_fw_state &
 360                                         FW_ADDSTATE_OPTICAL_MEDIA)
 361                                         != 0 ? "OPTICAL" : "COPPER"));
 362                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 363                                         "scsi%ld: %s: DHCPv4 STATE"
 364                                         " Enabled %s\n", ha->host_no,
 365                                          __func__, (ha->addl_fw_state &
 366                                          FW_ADDSTATE_DHCPv4_ENABLED) != 0 ?
 367                                         "YES" : "NO"));
 368                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 369                                         "scsi%ld: %s: LINK %s\n",
 370                                         ha->host_no, __func__,
 371                                         (ha->addl_fw_state &
 372                                          FW_ADDSTATE_LINK_UP) != 0 ?
 373                                         "UP" : "DOWN"));
 374                                 DEBUG2(ql4_printk(KERN_INFO, ha,
 375                                         "scsi%ld: %s: iSNS Service "
 376                                         "Started %s\n",
 377                                         ha->host_no, __func__,
 378                                         (ha->addl_fw_state &
 379                                          FW_ADDSTATE_ISNS_SVC_ENABLED) != 0 ?
 380                                         "YES" : "NO"));
 381
 382                                 ready = 1;
 383                                 break;
 384                         }
 385                 }
 386                 DEBUG2(printk("scsi%ld: %s: waiting on fw, state=%x:%x - "
 387                               "seconds expired= %d\n", ha->host_no, __func__,
 388                               ha->firmware_state, ha->addl_fw_state,
 389                               timeout_count));
 390                 if (is_qla4032(ha) &&
 391                         !(ha->addl_fw_state & FW_ADDSTATE_LINK_UP) &&
 392                         (timeout_count < ADAPTER_INIT_TOV - 5)) {
 393                         break;
 394                 }
 395
 396                 msleep(1000);
 397         }                       /* end of for */
 398
 399         if (timeout_count <= 0)
 400                 DEBUG2(printk("scsi%ld: %s: FW Initialization timed out!\n",
 401                               ha->host_no, __func__));
 402
 403         if (ha->firmware_state & FW_STATE_CONFIGURING_IP) {
 404                 DEBUG2(printk("scsi%ld: %s: FW initialized, but is reporting "
 405                               "it's waiting to configure an IP address\n",
 406                                ha->host_no, __func__));
 407                 ready = 1;
 408         } else if (ha->firmware_state & FW_STATE_WAIT_AUTOCONNECT) {
 409                 DEBUG2(printk("scsi%ld: %s: FW initialized, but "
 410                               "auto-discovery still in process\n",
 411                                ha->host_no, __func__));
 412                 ready = 1;
 413         }
 414
 415         return ready;
 416 }
 417
 418 /**
 419  * qla4xxx_init_firmware - initializes the firmware.
 420  * @ha: pointer to host adapter structure.
 421  *
 422  **/
 423 static int qla4xxx_init_firmware(struct scsi_qla_host *ha)
 424 {
 425         int status = QLA_ERROR;
 426
 427         if (is_aer_supported(ha) &&
 428             test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
 429                 return status;
 430
 431         /* For 82xx, stop firmware before initializing because if BIOS
 432          * has previously initialized firmware, then driver's initialize
 433          * firmware will fail. */
 434         if (is_qla8022(ha))
 435                 qla4_8xxx_stop_firmware(ha);
 436
 437         ql4_printk(KERN_INFO, ha, "Initializing firmware..\n");
 438         if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR) {
 439                 DEBUG2(printk("scsi%ld: %s: Failed to initialize firmware "
 440                               "control block\n", ha->host_no, __func__));
 441                 return status;
 442         }
 443         if (!qla4xxx_fw_ready(ha))
 444                 return status;
 445
 446         return qla4xxx_get_firmware_status(ha);
 447 }
 448
 449 static void qla4xxx_set_model_info(struct scsi_qla_host *ha)
 450 {
 451         uint16_t board_id_string[8];
 452         int i;
 453         int size = sizeof(ha->nvram->isp4022.boardIdStr);
 454         int offset = offsetof(struct eeprom_data, isp4022.boardIdStr) / 2;
 455
 456         for (i = 0; i < (size / 2) ; i++) {
 457                 board_id_string[i] = rd_nvram_word(ha, offset);
 458                 offset += 1;
 459         }
 460
 461         memcpy(ha->model_name, board_id_string, size);
 462 }
 463
 464 static int qla4xxx_config_nvram(struct scsi_qla_host *ha)
 465 {
 466         unsigned long flags;
 467         union external_hw_config_reg extHwConfig;
 468
 469         DEBUG2(printk("scsi%ld: %s: Get EEProm parameters \n", ha->host_no,
 470                       __func__));
 471         if (ql4xxx_lock_flash(ha) != QLA_SUCCESS)
 472                 return QLA_ERROR;
 473         if (ql4xxx_lock_nvram(ha) != QLA_SUCCESS) {
 474                 ql4xxx_unlock_flash(ha);
 475                 return QLA_ERROR;
 476         }
 477
 478         /* Get EEPRom Parameters from NVRAM and validate */
 479         ql4_printk(KERN_INFO, ha, "Configuring NVRAM ...\n");
 480         if (qla4xxx_is_nvram_configuration_valid(ha) == QLA_SUCCESS) {
 481                 spin_lock_irqsave(&ha->hardware_lock, flags);
 482                 extHwConfig.Asuint32_t =
 483                         rd_nvram_word(ha, eeprom_ext_hw_conf_offset(ha));
 484                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 485         } else {
 486                 ql4_printk(KERN_WARNING, ha,
 487                     "scsi%ld: %s: EEProm checksum invalid.  "
 488                     "Please update your EEPROM\n", ha->host_no,
 489                     __func__);
 490
 491                 /* Attempt to set defaults */
 492                 if (is_qla4010(ha))
 493                         extHwConfig.Asuint32_t = 0x1912;
 494                 else if (is_qla4022(ha) | is_qla4032(ha))
 495                         extHwConfig.Asuint32_t = 0x0023;
 496                 else
 497                         return QLA_ERROR;
 498         }
 499
 500         if (is_qla4022(ha) || is_qla4032(ha))
 501                 qla4xxx_set_model_info(ha);
 502         else
 503                 strcpy(ha->model_name, "QLA4010");
 504
 505         DEBUG(printk("scsi%ld: %s: Setting extHwConfig to 0xFFFF%04x\n",
 506                      ha->host_no, __func__, extHwConfig.Asuint32_t));
 507
 508         spin_lock_irqsave(&ha->hardware_lock, flags);
 509         writel((0xFFFF << 16) | extHwConfig.Asuint32_t, isp_ext_hw_conf(ha));
 510         readl(isp_ext_hw_conf(ha));
 511         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 512
 513         ql4xxx_unlock_nvram(ha);
 514         ql4xxx_unlock_flash(ha);
 515
 516         return QLA_SUCCESS;
 517 }
 518
 519 /**
 520  * qla4_8xxx_pci_config() - Setup ISP82xx PCI configuration registers.
 521  * @ha: HA context
 522  */
 523 void qla4_8xxx_pci_config(struct scsi_qla_host *ha)
 524 {
 525         pci_set_master(ha->pdev);
 526 }
 527
 528 void qla4xxx_pci_config(struct scsi_qla_host *ha)
 529 {
 530         uint16_t w;
 531         int status;
 532
 533         ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
 534
 535         pci_set_master(ha->pdev);
 536         status = pci_set_mwi(ha->pdev);
 537         /*
 538          * We want to respect framework's setting of PCI configuration space
 539          * command register and also want to make sure that all bits of
 540          * interest to us are properly set in command register.
 541          */
 542         pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
 543         w |= PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
 544         w &= ~PCI_COMMAND_INTX_DISABLE;
 545         pci_write_config_word(ha->pdev, PCI_COMMAND, w);
 546 }
 547
 548 static int qla4xxx_start_firmware_from_flash(struct scsi_qla_host *ha)
 549 {
 550         int status = QLA_ERROR;
 551         unsigned long max_wait_time;
 552         unsigned long flags;
 553         uint32_t mbox_status;
 554
 555         ql4_printk(KERN_INFO, ha, "Starting firmware ...\n");
 556
 557         /*
 558          * Start firmware from flash ROM
 559          *
 560          * WORKAROUND: Stuff a non-constant value that the firmware can
 561          * use as a seed for a random number generator in MB7 prior to
 562          * setting BOOT_ENABLE.  Fixes problem where the TCP
 563          * connections use the same TCP ports after each reboot,
 564          * causing some connections to not get re-established.
 565          */
 566         DEBUG(printk("scsi%d: %s: Start firmware from flash ROM\n",
 567                      ha->host_no, __func__));
 568
 569         spin_lock_irqsave(&ha->hardware_lock, flags);
 570         writel(jiffies, &ha->reg->mailbox[7]);
 571         if (is_qla4022(ha) | is_qla4032(ha))
 572                 writel(set_rmask(NVR_WRITE_ENABLE),
 573                        &ha->reg->u1.isp4022.nvram);
 574
 575         writel(2, &ha->reg->mailbox[6]);
 576         readl(&ha->reg->mailbox[6]);
 577
 578         writel(set_rmask(CSR_BOOT_ENABLE), &ha->reg->ctrl_status);
 579         readl(&ha->reg->ctrl_status);
 580         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 581
 582         /* Wait for firmware to come UP. */
 583         DEBUG2(printk(KERN_INFO "scsi%ld: %s: Wait up to %d seconds for "
 584                       "boot firmware to complete...\n",
 585                       ha->host_no, __func__, FIRMWARE_UP_TOV));
 586         max_wait_time = jiffies + (FIRMWARE_UP_TOV * HZ);
 587         do {
 588                 uint32_t ctrl_status;
 589
 590                 spin_lock_irqsave(&ha->hardware_lock, flags);
 591                 ctrl_status = readw(&ha->reg->ctrl_status);
 592                 mbox_status = readw(&ha->reg->mailbox[0]);
 593                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 594
 595                 if (ctrl_status & set_rmask(CSR_SCSI_PROCESSOR_INTR))
 596                         break;
 597                 if (mbox_status == MBOX_STS_COMMAND_COMPLETE)
 598                         break;
 599
 600                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: Waiting for boot "
 601                     "firmware to complete... ctrl_sts=0x%x, remaining=%ld\n",
 602                     ha->host_no, __func__, ctrl_status, max_wait_time));
 603
 604                 msleep_interruptible(250);
 605         } while (!time_after_eq(jiffies, max_wait_time));
 606
 607         if (mbox_status == MBOX_STS_COMMAND_COMPLETE) {
 608                 DEBUG(printk(KERN_INFO "scsi%ld: %s: Firmware has started\n",
 609                              ha->host_no, __func__));
 610
 611                 spin_lock_irqsave(&ha->hardware_lock, flags);
 612                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
 613                        &ha->reg->ctrl_status);
 614                 readl(&ha->reg->ctrl_status);
 615                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 616
 617                 status = QLA_SUCCESS;
 618         } else {
 619                 printk(KERN_INFO "scsi%ld: %s: Boot firmware failed "
 620                        "-  mbox status 0x%x\n", ha->host_no, __func__,
 621                        mbox_status);
 622                 status = QLA_ERROR;
 623         }
 624         return status;
 625 }
 626
 627 int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
 628 {
 629 #define QL4_LOCK_DRVR_WAIT      60
 630 #define QL4_LOCK_DRVR_SLEEP     1
 631
 632         int drvr_wait = QL4_LOCK_DRVR_WAIT;
 633         while (drvr_wait) {
 634                 if (ql4xxx_lock_drvr(a) == 0) {
 635                         ssleep(QL4_LOCK_DRVR_SLEEP);
 636                         if (drvr_wait) {
 637                                 DEBUG2(printk("scsi%ld: %s: Waiting for "
 638                                               "Global Init Semaphore(%d)...\n",
 639                                               a->host_no,
 640                                               __func__, drvr_wait));
 641                         }
 642                         drvr_wait -= QL4_LOCK_DRVR_SLEEP;
 643                 } else {
 644                         DEBUG2(printk("scsi%ld: %s: Global Init Semaphore "
 645                                       "acquired\n", a->host_no, __func__));
 646                         return QLA_SUCCESS;
 647                 }
 648         }
 649         return QLA_ERROR;
 650 }
 651
 652 /**
 653  * qla4xxx_start_firmware - starts qla4xxx firmware
 654  * @ha: Pointer to host adapter structure.
 655  *
 656  * This routine performs the necessary steps to start the firmware for
 657  * the QLA4010 adapter.
 658  **/
 659 int qla4xxx_start_firmware(struct scsi_qla_host *ha)
 660 {
 661         unsigned long flags = 0;
 662         uint32_t mbox_status;
 663         int status = QLA_ERROR;
 664         int soft_reset = 1;
 665         int config_chip = 0;
 666
 667         if (is_qla4022(ha) | is_qla4032(ha))
 668                 ql4xxx_set_mac_number(ha);
 669
 670         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
 671                 return QLA_ERROR;
 672
 673         spin_lock_irqsave(&ha->hardware_lock, flags);
 674
 675         DEBUG2(printk("scsi%ld: %s: port_ctrl   = 0x%08X\n", ha->host_no,
 676                       __func__, readw(isp_port_ctrl(ha))));
 677         DEBUG(printk("scsi%ld: %s: port_status = 0x%08X\n", ha->host_no,
 678                      __func__, readw(isp_port_status(ha))));
 679
 680         /* Is Hardware already initialized? */
 681         if ((readw(isp_port_ctrl(ha)) & 0x8000) != 0) {
 682                 DEBUG(printk("scsi%ld: %s: Hardware has already been "
 683                              "initialized\n", ha->host_no, __func__));
 684
 685                 /* Receive firmware boot acknowledgement */
 686                 mbox_status = readw(&ha->reg->mailbox[0]);
 687
 688                 DEBUG2(printk("scsi%ld: %s: H/W Config complete - mbox[0]= "
 689                               "0x%x\n", ha->host_no, __func__, mbox_status));
 690
 691                 /* Is firmware already booted? */
 692                 if (mbox_status == 0) {
 693                         /* F/W not running, must be config by net driver */
 694                         config_chip = 1;
 695                         soft_reset = 0;
 696                 } else {
 697                         writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
 698                                &ha->reg->ctrl_status);
 699                         readl(&ha->reg->ctrl_status);
 700                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 701                         if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
 702                                 DEBUG2(printk("scsi%ld: %s: Get firmware "
 703                                               "state -- state = 0x%x\n",
 704                                               ha->host_no,
 705                                               __func__, ha->firmware_state));
 706                                 /* F/W is running */
 707                                 if (ha->firmware_state &
 708                                     FW_STATE_CONFIG_WAIT) {
 709                                         DEBUG2(printk("scsi%ld: %s: Firmware "
 710                                                       "in known state -- "
 711                                                       "config and "
 712                                                       "boot, state = 0x%x\n",
 713                                                       ha->host_no, __func__,
 714                                                       ha->firmware_state));
 715                                         config_chip = 1;
 716                                         soft_reset = 0;
 717                                 }
 718                         } else {
 719                                 DEBUG2(printk("scsi%ld: %s: Firmware in "
 720                                               "unknown state -- resetting,"
 721                                               " state = "
 722                                               "0x%x\n", ha->host_no, __func__,
 723                                               ha->firmware_state));
 724                         }
 725                         spin_lock_irqsave(&ha->hardware_lock, flags);
 726                 }
 727         } else {
 728                 DEBUG(printk("scsi%ld: %s: H/W initialization hasn't been "
 729                              "started - resetting\n", ha->host_no, __func__));
 730         }
 731         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 732
 733         DEBUG(printk("scsi%ld: %s: Flags soft_rest=%d, config= %d\n ",
 734                      ha->host_no, __func__, soft_reset, config_chip));
 735         if (soft_reset) {
 736                 DEBUG(printk("scsi%ld: %s: Issue Soft Reset\n", ha->host_no,
 737                              __func__));
 738                 status = qla4xxx_soft_reset(ha);        /* NOTE: acquires drvr
 739                                                          * lock again, but ok */
 740                 if (status == QLA_ERROR) {
 741                         DEBUG(printk("scsi%d: %s: Soft Reset failed!\n",
 742                                      ha->host_no, __func__));
 743                         ql4xxx_unlock_drvr(ha);
 744                         return QLA_ERROR;
 745                 }
 746                 config_chip = 1;
 747
 748                 /* Reset clears the semaphore, so acquire again */
 749                 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
 750                         return QLA_ERROR;
 751         }
 752
 753         if (config_chip) {
 754                 if ((status = qla4xxx_config_nvram(ha)) == QLA_SUCCESS)
 755                         status = qla4xxx_start_firmware_from_flash(ha);
 756         }
 757
 758         ql4xxx_unlock_drvr(ha);
 759         if (status == QLA_SUCCESS) {
 760                 if (test_and_clear_bit(AF_GET_CRASH_RECORD, &ha->flags))
 761                         qla4xxx_get_crash_record(ha);
 762         } else {
 763                 DEBUG(printk("scsi%ld: %s: Firmware has NOT started\n",
 764                              ha->host_no, __func__));
 765         }
 766         return status;
 767 }
 768 /**
 769  * qla4xxx_free_ddb_index - Free DDBs reserved by firmware
 770  * @ha: pointer to adapter structure
 771  *
 772  * Since firmware is not running in autoconnect mode the DDB indices should
 773  * be freed so that when login happens from user space there are free DDB
 774  * indices available.
 775  **/
 776 static void qla4xxx_free_ddb_index(struct scsi_qla_host *ha)
 777 {
 778         int max_ddbs;
 779         int ret;
 780         uint32_t idx = 0, next_idx = 0;
 781         uint32_t state = 0, conn_err = 0;
 782
 783         max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
 784                                      MAX_DEV_DB_ENTRIES;
 785
 786         for (idx = 0; idx < max_ddbs; idx = next_idx) {
 787                 ret = qla4xxx_get_fwddb_entry(ha, idx, NULL, 0, NULL,
 788                                               &next_idx, &state, &conn_err,
 789                                                 NULL, NULL);
 790                 if (ret == QLA_ERROR)
 791                         continue;
 792                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
 793                     state == DDB_DS_SESSION_FAILED) {
 794                         DEBUG2(ql4_printk(KERN_INFO, ha,
 795                                           "Freeing DDB index = 0x%x\n", idx));
 796                         ret = qla4xxx_clear_ddb_entry(ha, idx);
 797                         if (ret == QLA_ERROR)
 798                                 ql4_printk(KERN_ERR, ha,
 799                                            "Unable to clear DDB index = "
 800                                            "0x%x\n", idx);
 801                 }
 802                 if (next_idx == 0)
 803                         break;
 804         }
 805 }
 806
 807
 808 /**
 809  * qla4xxx_initialize_adapter - initiailizes hba
 810  * @ha: Pointer to host adapter structure.
 811  *
 812  * This routine parforms all of the steps necessary to initialize the adapter.
 813  *
 814  **/
 815 int qla4xxx_initialize_adapter(struct scsi_qla_host *ha)
 816 {
 817         int status = QLA_ERROR;
 818
 819         ha->eeprom_cmd_data = 0;
 820
 821         ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
 822         ha->isp_ops->pci_config(ha);
 823
 824         ha->isp_ops->disable_intrs(ha);
 825
 826         /* Initialize the Host adapter request/response queues and firmware */
 827         if (ha->isp_ops->start_firmware(ha) == QLA_ERROR)
 828                 goto exit_init_hba;
 829
 830         if (qla4xxx_about_firmware(ha) == QLA_ERROR)
 831                 goto exit_init_hba;
 832
 833         if (ha->isp_ops->get_sys_info(ha) == QLA_ERROR)
 834                 goto exit_init_hba;
 835
 836         if (qla4xxx_init_local_data(ha) == QLA_ERROR)
 837                 goto exit_init_hba;
 838
 839         status = qla4xxx_init_firmware(ha);
 840         if (status == QLA_ERROR)
 841                 goto exit_init_hba;
 842
 843         qla4xxx_free_ddb_index(ha);
 844
 845         set_bit(AF_ONLINE, &ha->flags);
 846 exit_init_hba:
 847         if (is_qla8022(ha) && (status == QLA_ERROR)) {
 848                 /* Since interrupts are registered in start_firmware for
 849                  * 82xx, release them here if initialize_adapter fails */
 850                 qla4xxx_free_irqs(ha);
 851         }
 852
 853         DEBUG2(printk("scsi%ld: initialize adapter: %s\n", ha->host_no,
 854             status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
 855         return status;
 856 }
 857
 858 /**
 859  * qla4xxx_process_ddb_changed - process ddb state change
 860  * @ha - Pointer to host adapter structure.
 861  * @fw_ddb_index - Firmware's device database index
 862  * @state - Device state
 863  *
 864  * This routine processes a Decive Database Changed AEN Event.
 865  **/
 866 int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
 867                 uint32_t state, uint32_t conn_err)
 868 {
 869         struct ddb_entry * ddb_entry;
 870         uint32_t old_fw_ddb_device_state;
 871         int status = QLA_ERROR;
 872
 873         /* check for out of range index */
 874         if (fw_ddb_index >= MAX_DDB_ENTRIES)
 875                 goto exit_ddb_event;
 876
 877         /* Get the corresponging ddb entry */
 878         ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
 879         /* Device does not currently exist in our database. */
 880         if (ddb_entry == NULL) {
 881                 ql4_printk(KERN_ERR, ha, "%s: No ddb_entry at FW index [%d]\n",
 882                            __func__, fw_ddb_index);
 883
 884                 if (state == DDB_DS_NO_CONNECTION_ACTIVE)
 885                         clear_bit(fw_ddb_index, ha->ddb_idx_map);
 886
 887                 goto exit_ddb_event;
 888         }
 889
 890         old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
 891         DEBUG2(ql4_printk(KERN_INFO, ha,
 892                           "%s: DDB - old state = 0x%x, new state = 0x%x for "
 893                           "index [%d]\n", __func__,
 894                           ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
 895
 896         ddb_entry->fw_ddb_device_state = state;
 897
 898         switch (old_fw_ddb_device_state) {
 899         case DDB_DS_LOGIN_IN_PROCESS:
 900                 switch (state) {
 901                 case DDB_DS_SESSION_ACTIVE:
 902                 case DDB_DS_DISCOVERY:
 903                         iscsi_conn_start(ddb_entry->conn);
 904                         iscsi_conn_login_event(ddb_entry->conn,
 905                                                ISCSI_CONN_STATE_LOGGED_IN);
 906                         qla4xxx_update_session_conn_param(ha, ddb_entry);
 907                         status = QLA_SUCCESS;
 908                         break;
 909                 case DDB_DS_SESSION_FAILED:
 910                 case DDB_DS_NO_CONNECTION_ACTIVE:
 911                         iscsi_conn_login_event(ddb_entry->conn,
 912                                                ISCSI_CONN_STATE_FREE);
 913                         status = QLA_SUCCESS;
 914                         break;
 915                 }
 916                 break;
 917         case DDB_DS_SESSION_ACTIVE:
 918                 switch (state) {
 919                 case DDB_DS_SESSION_FAILED:
 920                         /*
 921                          * iscsi_session failure  will cause userspace to
 922                          * stop the connection which in turn would block the
 923                          * iscsi_session and start relogin
 924                          */
 925                         iscsi_session_failure(ddb_entry->sess->dd_data,
 926                                               ISCSI_ERR_CONN_FAILED);
 927                         status = QLA_SUCCESS;
 928                         break;
 929                 case DDB_DS_NO_CONNECTION_ACTIVE:
 930                         clear_bit(fw_ddb_index, ha->ddb_idx_map);
 931                         status = QLA_SUCCESS;
 932                         break;
 933                 }
 934                 break;
 935         case DDB_DS_SESSION_FAILED:
 936                 switch (state) {
 937                 case DDB_DS_SESSION_ACTIVE:
 938                 case DDB_DS_DISCOVERY:
 939                         iscsi_conn_start(ddb_entry->conn);
 940                         iscsi_conn_login_event(ddb_entry->conn,
 941                                                ISCSI_CONN_STATE_LOGGED_IN);
 942                         qla4xxx_update_session_conn_param(ha, ddb_entry);
 943                         status = QLA_SUCCESS;
 944                         break;
 945                 case DDB_DS_SESSION_FAILED:
 946                         iscsi_session_failure(ddb_entry->sess->dd_data,
 947                                               ISCSI_ERR_CONN_FAILED);
 948                         status = QLA_SUCCESS;
 949                         break;
 950                 }
 951                 break;
 952         default:
 953                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unknown Event\n",
 954                                 __func__));
 955                 break;
 956         }
 957
 958 exit_ddb_event:
 959         return status;
 960 }