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 int qla4xxx_config_nvram(struct scsi_qla_host *ha)
 450 {
 451         unsigned long flags;
 452         union external_hw_config_reg extHwConfig;
 453
 454         DEBUG2(printk("scsi%ld: %s: Get EEProm parameters \n", ha->host_no,
 455                       __func__));
 456         if (ql4xxx_lock_flash(ha) != QLA_SUCCESS)
 457                 return QLA_ERROR;
 458         if (ql4xxx_lock_nvram(ha) != QLA_SUCCESS) {
 459                 ql4xxx_unlock_flash(ha);
 460                 return QLA_ERROR;
 461         }
 462
 463         /* Get EEPRom Parameters from NVRAM and validate */
 464         ql4_printk(KERN_INFO, ha, "Configuring NVRAM ...\n");
 465         if (qla4xxx_is_nvram_configuration_valid(ha) == QLA_SUCCESS) {
 466                 spin_lock_irqsave(&ha->hardware_lock, flags);
 467                 extHwConfig.Asuint32_t =
 468                         rd_nvram_word(ha, eeprom_ext_hw_conf_offset(ha));
 469                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 470         } else {
 471                 ql4_printk(KERN_WARNING, ha,
 472                     "scsi%ld: %s: EEProm checksum invalid.  "
 473                     "Please update your EEPROM\n", ha->host_no,
 474                     __func__);
 475
 476                 /* Attempt to set defaults */
 477                 if (is_qla4010(ha))
 478                         extHwConfig.Asuint32_t = 0x1912;
 479                 else if (is_qla4022(ha) | is_qla4032(ha))
 480                         extHwConfig.Asuint32_t = 0x0023;
 481                 else
 482                         return QLA_ERROR;
 483         }
 484         DEBUG(printk("scsi%ld: %s: Setting extHwConfig to 0xFFFF%04x\n",
 485                      ha->host_no, __func__, extHwConfig.Asuint32_t));
 486
 487         spin_lock_irqsave(&ha->hardware_lock, flags);
 488         writel((0xFFFF << 16) | extHwConfig.Asuint32_t, isp_ext_hw_conf(ha));
 489         readl(isp_ext_hw_conf(ha));
 490         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 491
 492         ql4xxx_unlock_nvram(ha);
 493         ql4xxx_unlock_flash(ha);
 494
 495         return QLA_SUCCESS;
 496 }
 497
 498 /**
 499  * qla4_8xxx_pci_config() - Setup ISP82xx PCI configuration registers.
 500  * @ha: HA context
 501  */
 502 void qla4_8xxx_pci_config(struct scsi_qla_host *ha)
 503 {
 504         pci_set_master(ha->pdev);
 505 }
 506
 507 void qla4xxx_pci_config(struct scsi_qla_host *ha)
 508 {
 509         uint16_t w;
 510         int status;
 511
 512         ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
 513
 514         pci_set_master(ha->pdev);
 515         status = pci_set_mwi(ha->pdev);
 516         /*
 517          * We want to respect framework's setting of PCI configuration space
 518          * command register and also want to make sure that all bits of
 519          * interest to us are properly set in command register.
 520          */
 521         pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
 522         w |= PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
 523         w &= ~PCI_COMMAND_INTX_DISABLE;
 524         pci_write_config_word(ha->pdev, PCI_COMMAND, w);
 525 }
 526
 527 static int qla4xxx_start_firmware_from_flash(struct scsi_qla_host *ha)
 528 {
 529         int status = QLA_ERROR;
 530         unsigned long max_wait_time;
 531         unsigned long flags;
 532         uint32_t mbox_status;
 533
 534         ql4_printk(KERN_INFO, ha, "Starting firmware ...\n");
 535
 536         /*
 537          * Start firmware from flash ROM
 538          *
 539          * WORKAROUND: Stuff a non-constant value that the firmware can
 540          * use as a seed for a random number generator in MB7 prior to
 541          * setting BOOT_ENABLE.  Fixes problem where the TCP
 542          * connections use the same TCP ports after each reboot,
 543          * causing some connections to not get re-established.
 544          */
 545         DEBUG(printk("scsi%d: %s: Start firmware from flash ROM\n",
 546                      ha->host_no, __func__));
 547
 548         spin_lock_irqsave(&ha->hardware_lock, flags);
 549         writel(jiffies, &ha->reg->mailbox[7]);
 550         if (is_qla4022(ha) | is_qla4032(ha))
 551                 writel(set_rmask(NVR_WRITE_ENABLE),
 552                        &ha->reg->u1.isp4022.nvram);
 553
 554         writel(2, &ha->reg->mailbox[6]);
 555         readl(&ha->reg->mailbox[6]);
 556
 557         writel(set_rmask(CSR_BOOT_ENABLE), &ha->reg->ctrl_status);
 558         readl(&ha->reg->ctrl_status);
 559         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 560
 561         /* Wait for firmware to come UP. */
 562         DEBUG2(printk(KERN_INFO "scsi%ld: %s: Wait up to %d seconds for "
 563                       "boot firmware to complete...\n",
 564                       ha->host_no, __func__, FIRMWARE_UP_TOV));
 565         max_wait_time = jiffies + (FIRMWARE_UP_TOV * HZ);
 566         do {
 567                 uint32_t ctrl_status;
 568
 569                 spin_lock_irqsave(&ha->hardware_lock, flags);
 570                 ctrl_status = readw(&ha->reg->ctrl_status);
 571                 mbox_status = readw(&ha->reg->mailbox[0]);
 572                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 573
 574                 if (ctrl_status & set_rmask(CSR_SCSI_PROCESSOR_INTR))
 575                         break;
 576                 if (mbox_status == MBOX_STS_COMMAND_COMPLETE)
 577                         break;
 578
 579                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: Waiting for boot "
 580                     "firmware to complete... ctrl_sts=0x%x, remaining=%ld\n",
 581                     ha->host_no, __func__, ctrl_status, max_wait_time));
 582
 583                 msleep_interruptible(250);
 584         } while (!time_after_eq(jiffies, max_wait_time));
 585
 586         if (mbox_status == MBOX_STS_COMMAND_COMPLETE) {
 587                 DEBUG(printk(KERN_INFO "scsi%ld: %s: Firmware has started\n",
 588                              ha->host_no, __func__));
 589
 590                 spin_lock_irqsave(&ha->hardware_lock, flags);
 591                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
 592                        &ha->reg->ctrl_status);
 593                 readl(&ha->reg->ctrl_status);
 594                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 595
 596                 status = QLA_SUCCESS;
 597         } else {
 598                 printk(KERN_INFO "scsi%ld: %s: Boot firmware failed "
 599                        "-  mbox status 0x%x\n", ha->host_no, __func__,
 600                        mbox_status);
 601                 status = QLA_ERROR;
 602         }
 603         return status;
 604 }
 605
 606 int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
 607 {
 608 #define QL4_LOCK_DRVR_WAIT      60
 609 #define QL4_LOCK_DRVR_SLEEP     1
 610
 611         int drvr_wait = QL4_LOCK_DRVR_WAIT;
 612         while (drvr_wait) {
 613                 if (ql4xxx_lock_drvr(a) == 0) {
 614                         ssleep(QL4_LOCK_DRVR_SLEEP);
 615                         if (drvr_wait) {
 616                                 DEBUG2(printk("scsi%ld: %s: Waiting for "
 617                                               "Global Init Semaphore(%d)...\n",
 618                                               a->host_no,
 619                                               __func__, drvr_wait));
 620                         }
 621                         drvr_wait -= QL4_LOCK_DRVR_SLEEP;
 622                 } else {
 623                         DEBUG2(printk("scsi%ld: %s: Global Init Semaphore "
 624                                       "acquired\n", a->host_no, __func__));
 625                         return QLA_SUCCESS;
 626                 }
 627         }
 628         return QLA_ERROR;
 629 }
 630
 631 /**
 632  * qla4xxx_start_firmware - starts qla4xxx firmware
 633  * @ha: Pointer to host adapter structure.
 634  *
 635  * This routine performs the necessary steps to start the firmware for
 636  * the QLA4010 adapter.
 637  **/
 638 int qla4xxx_start_firmware(struct scsi_qla_host *ha)
 639 {
 640         unsigned long flags = 0;
 641         uint32_t mbox_status;
 642         int status = QLA_ERROR;
 643         int soft_reset = 1;
 644         int config_chip = 0;
 645
 646         if (is_qla4022(ha) | is_qla4032(ha))
 647                 ql4xxx_set_mac_number(ha);
 648
 649         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
 650                 return QLA_ERROR;
 651
 652         spin_lock_irqsave(&ha->hardware_lock, flags);
 653
 654         DEBUG2(printk("scsi%ld: %s: port_ctrl   = 0x%08X\n", ha->host_no,
 655                       __func__, readw(isp_port_ctrl(ha))));
 656         DEBUG(printk("scsi%ld: %s: port_status = 0x%08X\n", ha->host_no,
 657                      __func__, readw(isp_port_status(ha))));
 658
 659         /* Is Hardware already initialized? */
 660         if ((readw(isp_port_ctrl(ha)) & 0x8000) != 0) {
 661                 DEBUG(printk("scsi%ld: %s: Hardware has already been "
 662                              "initialized\n", ha->host_no, __func__));
 663
 664                 /* Receive firmware boot acknowledgement */
 665                 mbox_status = readw(&ha->reg->mailbox[0]);
 666
 667                 DEBUG2(printk("scsi%ld: %s: H/W Config complete - mbox[0]= "
 668                               "0x%x\n", ha->host_no, __func__, mbox_status));
 669
 670                 /* Is firmware already booted? */
 671                 if (mbox_status == 0) {
 672                         /* F/W not running, must be config by net driver */
 673                         config_chip = 1;
 674                         soft_reset = 0;
 675                 } else {
 676                         writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
 677                                &ha->reg->ctrl_status);
 678                         readl(&ha->reg->ctrl_status);
 679                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 680                         if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
 681                                 DEBUG2(printk("scsi%ld: %s: Get firmware "
 682                                               "state -- state = 0x%x\n",
 683                                               ha->host_no,
 684                                               __func__, ha->firmware_state));
 685                                 /* F/W is running */
 686                                 if (ha->firmware_state &
 687                                     FW_STATE_CONFIG_WAIT) {
 688                                         DEBUG2(printk("scsi%ld: %s: Firmware "
 689                                                       "in known state -- "
 690                                                       "config and "
 691                                                       "boot, state = 0x%x\n",
 692                                                       ha->host_no, __func__,
 693                                                       ha->firmware_state));
 694                                         config_chip = 1;
 695                                         soft_reset = 0;
 696                                 }
 697                         } else {
 698                                 DEBUG2(printk("scsi%ld: %s: Firmware in "
 699                                               "unknown state -- resetting,"
 700                                               " state = "
 701                                               "0x%x\n", ha->host_no, __func__,
 702                                               ha->firmware_state));
 703                         }
 704                         spin_lock_irqsave(&ha->hardware_lock, flags);
 705                 }
 706         } else {
 707                 DEBUG(printk("scsi%ld: %s: H/W initialization hasn't been "
 708                              "started - resetting\n", ha->host_no, __func__));
 709         }
 710         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 711
 712         DEBUG(printk("scsi%ld: %s: Flags soft_rest=%d, config= %d\n ",
 713                      ha->host_no, __func__, soft_reset, config_chip));
 714         if (soft_reset) {
 715                 DEBUG(printk("scsi%ld: %s: Issue Soft Reset\n", ha->host_no,
 716                              __func__));
 717                 status = qla4xxx_soft_reset(ha);        /* NOTE: acquires drvr
 718                                                          * lock again, but ok */
 719                 if (status == QLA_ERROR) {
 720                         DEBUG(printk("scsi%d: %s: Soft Reset failed!\n",
 721                                      ha->host_no, __func__));
 722                         ql4xxx_unlock_drvr(ha);
 723                         return QLA_ERROR;
 724                 }
 725                 config_chip = 1;
 726
 727                 /* Reset clears the semaphore, so acquire again */
 728                 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
 729                         return QLA_ERROR;
 730         }
 731
 732         if (config_chip) {
 733                 if ((status = qla4xxx_config_nvram(ha)) == QLA_SUCCESS)
 734                         status = qla4xxx_start_firmware_from_flash(ha);
 735         }
 736
 737         ql4xxx_unlock_drvr(ha);
 738         if (status == QLA_SUCCESS) {
 739                 if (test_and_clear_bit(AF_GET_CRASH_RECORD, &ha->flags))
 740                         qla4xxx_get_crash_record(ha);
 741         } else {
 742                 DEBUG(printk("scsi%ld: %s: Firmware has NOT started\n",
 743                              ha->host_no, __func__));
 744         }
 745         return status;
 746 }
 747
 748
 749 /**
 750  * qla4xxx_initialize_adapter - initiailizes hba
 751  * @ha: Pointer to host adapter structure.
 752  *
 753  * This routine parforms all of the steps necessary to initialize the adapter.
 754  *
 755  **/
 756 int qla4xxx_initialize_adapter(struct scsi_qla_host *ha)
 757 {
 758         int status = QLA_ERROR;
 759
 760         ha->eeprom_cmd_data = 0;
 761
 762         ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
 763         ha->isp_ops->pci_config(ha);
 764
 765         ha->isp_ops->disable_intrs(ha);
 766
 767         /* Initialize the Host adapter request/response queues and firmware */
 768         if (ha->isp_ops->start_firmware(ha) == QLA_ERROR)
 769                 goto exit_init_hba;
 770
 771         if (qla4xxx_about_firmware(ha) == QLA_ERROR)
 772                 goto exit_init_hba;
 773
 774         if (ha->isp_ops->get_sys_info(ha) == QLA_ERROR)
 775                 goto exit_init_hba;
 776
 777         if (qla4xxx_init_local_data(ha) == QLA_ERROR)
 778                 goto exit_init_hba;
 779
 780         status = qla4xxx_init_firmware(ha);
 781         if (status == QLA_ERROR)
 782                 goto exit_init_hba;
 783
 784         set_bit(AF_ONLINE, &ha->flags);
 785 exit_init_hba:
 786         if (is_qla8022(ha) && (status == QLA_ERROR)) {
 787                 /* Since interrupts are registered in start_firmware for
 788                  * 82xx, release them here if initialize_adapter fails */
 789                 qla4xxx_free_irqs(ha);
 790         }
 791
 792         DEBUG2(printk("scsi%ld: initialize adapter: %s\n", ha->host_no,
 793             status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
 794         return status;
 795 }
 796
 797 /**
 798  * qla4xxx_process_ddb_changed - process ddb state change
 799  * @ha - Pointer to host adapter structure.
 800  * @fw_ddb_index - Firmware's device database index
 801  * @state - Device state
 802  *
 803  * This routine processes a Decive Database Changed AEN Event.
 804  **/
 805 int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
 806                 uint32_t state, uint32_t conn_err)
 807 {
 808         struct ddb_entry * ddb_entry;
 809         uint32_t old_fw_ddb_device_state;
 810         int status = QLA_ERROR;
 811
 812         /* check for out of range index */
 813         if (fw_ddb_index >= MAX_DDB_ENTRIES)
 814                 goto exit_ddb_event;
 815
 816         /* Get the corresponging ddb entry */
 817         ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
 818         /* Device does not currently exist in our database. */
 819         if (ddb_entry == NULL) {
 820                 ql4_printk(KERN_ERR, ha, "%s: No ddb_entry at FW index [%d]\n",
 821                            __func__, fw_ddb_index);
 822                 goto exit_ddb_event;
 823         }
 824
 825         old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
 826         DEBUG2(ql4_printk(KERN_INFO, ha,
 827                           "%s: DDB - old state = 0x%x, new state = 0x%x for "
 828                           "index [%d]\n", __func__,
 829                           ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
 830
 831         ddb_entry->fw_ddb_device_state = state;
 832
 833         switch (old_fw_ddb_device_state) {
 834         case DDB_DS_LOGIN_IN_PROCESS:
 835                 switch (state) {
 836                 case DDB_DS_SESSION_ACTIVE:
 837                 case DDB_DS_DISCOVERY:
 838                         iscsi_conn_login_event(ddb_entry->conn,
 839                                                ISCSI_CONN_STATE_LOGGED_IN);
 840                         qla4xxx_update_session_conn_param(ha, ddb_entry);
 841                         status = QLA_SUCCESS;
 842                         break;
 843                 case DDB_DS_SESSION_FAILED:
 844                 case DDB_DS_NO_CONNECTION_ACTIVE:
 845                         iscsi_conn_login_event(ddb_entry->conn,
 846                                                ISCSI_CONN_STATE_FREE);
 847                         status = QLA_SUCCESS;
 848                         break;
 849                 }
 850                 break;
 851         case DDB_DS_SESSION_ACTIVE:
 852                 if (state == DDB_DS_SESSION_FAILED) {
 853                         /*
 854                          * iscsi_session failure  will cause userspace to
 855                          * stop the connection which in turn would block the
 856                          * iscsi_session and start relogin
 857                          */
 858                         iscsi_session_failure(ddb_entry->sess->dd_data,
 859                                               ISCSI_ERR_CONN_FAILED);
 860                         status = QLA_SUCCESS;
 861                 }
 862                 break;
 863         default:
 864                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unknown Event\n",
 865                                 __func__));
 866                 break;
 867         }
 868
 869 exit_ddb_event:
 870         return status;
 871 }