drivers/scsi/qla4xxx/ql4_mbx.c

   1 /*
   2  * QLogic iSCSI HBA Driver
   3  * Copyright (c)  2003-2006 QLogic Corporation
   4  *
   5  * See LICENSE.qla4xxx for copyright and licensing details.
   6  */
   7
   8 #include "ql4_def.h"
   9 #include "ql4_glbl.h"
  10 #include "ql4_dbg.h"
  11 #include "ql4_inline.h"
  12
  13
  14 /**
  15  * qla4xxx_mailbox_command - issues mailbox commands
  16  * @ha: Pointer to host adapter structure.
  17  * @inCount: number of mailbox registers to load.
  18  * @outCount: number of mailbox registers to return.
  19  * @mbx_cmd: data pointer for mailbox in registers.
  20  * @mbx_sts: data pointer for mailbox out registers.
  21  *
  22  * This routine isssue mailbox commands and waits for completion.
  23  * If outCount is 0, this routine completes successfully WITHOUT waiting
  24  * for the mailbox command to complete.
  25  **/
  26 int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount,
  27                             uint8_t outCount, uint32_t *mbx_cmd,
  28                             uint32_t *mbx_sts)
  29 {
  30         int status = QLA_ERROR;
  31         uint8_t i;
  32         u_long wait_count;
  33         uint32_t intr_status;
  34         unsigned long flags = 0;
  35
  36         /* Make sure that pointers are valid */
  37         if (!mbx_cmd || !mbx_sts) {
  38                 DEBUG2(printk("scsi%ld: %s: Invalid mbx_cmd or mbx_sts "
  39                               "pointer\n", ha->host_no, __func__));
  40                 return status;
  41         }
  42         /* Mailbox code active */
  43         wait_count = MBOX_TOV * 100;
  44
  45         while (wait_count--) {
  46                 mutex_lock(&ha->mbox_sem);
  47                 if (!test_bit(AF_MBOX_COMMAND, &ha->flags)) {
  48                         set_bit(AF_MBOX_COMMAND, &ha->flags);
  49                         mutex_unlock(&ha->mbox_sem);
  50                         break;
  51                 }
  52                 mutex_unlock(&ha->mbox_sem);
  53                 if (!wait_count) {
  54                         DEBUG2(printk("scsi%ld: %s: mbox_sem failed\n",
  55                                 ha->host_no, __func__));
  56                         return status;
  57                 }
  58                 msleep(10);
  59         }
  60
  61         /* To prevent overwriting mailbox registers for a command that has
  62          * not yet been serviced, check to see if an active command
  63          * (AEN, IOCB, etc.) is interrupting, then service it.
  64          * -----------------------------------------------------------------
  65          */
  66         spin_lock_irqsave(&ha->hardware_lock, flags);
  67
  68         if (is_qla8022(ha)) {
  69                 intr_status = readl(&ha->qla4_8xxx_reg->host_int);
  70                 if (intr_status & ISRX_82XX_RISC_INT) {
  71                         /* Service existing interrupt */
  72                         DEBUG2(printk("scsi%ld: %s: "
  73                             "servicing existing interrupt\n",
  74                             ha->host_no, __func__));
  75                         intr_status = readl(&ha->qla4_8xxx_reg->host_status);
  76                         ha->isp_ops->interrupt_service_routine(ha, intr_status);
  77                         clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
  78                         if (test_bit(AF_INTERRUPTS_ON, &ha->flags) &&
  79                             test_bit(AF_INTx_ENABLED, &ha->flags))
  80                                 qla4_8xxx_wr_32(ha,
  81                                     ha->nx_legacy_intr.tgt_mask_reg,
  82                                     0xfbff);
  83                 }
  84         } else {
  85                 intr_status = readl(&ha->reg->ctrl_status);
  86                 if (intr_status & CSR_SCSI_PROCESSOR_INTR) {
  87                         /* Service existing interrupt */
  88                         ha->isp_ops->interrupt_service_routine(ha, intr_status);
  89                         clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
  90                 }
  91         }
  92
  93         ha->mbox_status_count = outCount;
  94         for (i = 0; i < outCount; i++)
  95                 ha->mbox_status[i] = 0;
  96
  97         if (is_qla8022(ha)) {
  98                 /* Load all mailbox registers, except mailbox 0. */
  99                 DEBUG5(
 100                     printk("scsi%ld: %s: Cmd ", ha->host_no, __func__);
 101                     for (i = 0; i < inCount; i++)
 102                         printk("mb%d=%04x ", i, mbx_cmd[i]);
 103                     printk("\n"));
 104
 105                 for (i = 1; i < inCount; i++)
 106                         writel(mbx_cmd[i], &ha->qla4_8xxx_reg->mailbox_in[i]);
 107                 writel(mbx_cmd[0], &ha->qla4_8xxx_reg->mailbox_in[0]);
 108                 readl(&ha->qla4_8xxx_reg->mailbox_in[0]);
 109                 writel(HINT_MBX_INT_PENDING, &ha->qla4_8xxx_reg->hint);
 110         } else {
 111                 /* Load all mailbox registers, except mailbox 0. */
 112                 for (i = 1; i < inCount; i++)
 113                         writel(mbx_cmd[i], &ha->reg->mailbox[i]);
 114
 115                 /* Wakeup firmware  */
 116                 writel(mbx_cmd[0], &ha->reg->mailbox[0]);
 117                 readl(&ha->reg->mailbox[0]);
 118                 writel(set_rmask(CSR_INTR_RISC), &ha->reg->ctrl_status);
 119                 readl(&ha->reg->ctrl_status);
 120         }
 121
 122         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 123
 124         /* Wait for completion */
 125
 126         /*
 127          * If we don't want status, don't wait for the mailbox command to
 128          * complete.  For example, MBOX_CMD_RESET_FW doesn't return status,
 129          * you must poll the inbound Interrupt Mask for completion.
 130          */
 131         if (outCount == 0) {
 132                 status = QLA_SUCCESS;
 133                 goto mbox_exit;
 134         }
 135
 136         /*
 137          * Wait for completion: Poll or completion queue
 138          */
 139         if (test_bit(AF_IRQ_ATTACHED, &ha->flags) &&
 140             test_bit(AF_INTERRUPTS_ON, &ha->flags) &&
 141             test_bit(AF_ONLINE, &ha->flags) &&
 142             !test_bit(AF_HBA_GOING_AWAY, &ha->flags)) {
 143                 /* Do not poll for completion. Use completion queue */
 144                 set_bit(AF_MBOX_COMMAND_NOPOLL, &ha->flags);
 145                 wait_for_completion_timeout(&ha->mbx_intr_comp, MBOX_TOV * HZ);
 146                 clear_bit(AF_MBOX_COMMAND_NOPOLL, &ha->flags);
 147         } else {
 148                 /* Poll for command to complete */
 149                 wait_count = jiffies + MBOX_TOV * HZ;
 150                 while (test_bit(AF_MBOX_COMMAND_DONE, &ha->flags) == 0) {
 151                         if (time_after_eq(jiffies, wait_count))
 152                                 break;
 153                         /*
 154                          * Service the interrupt.
 155                          * The ISR will save the mailbox status registers
 156                          * to a temporary storage location in the adapter
 157                          * structure.
 158                          */
 159
 160                         spin_lock_irqsave(&ha->hardware_lock, flags);
 161                         if (is_qla8022(ha)) {
 162                                 intr_status =
 163                                     readl(&ha->qla4_8xxx_reg->host_int);
 164                                 if (intr_status & ISRX_82XX_RISC_INT) {
 165                                         ha->mbox_status_count = outCount;
 166                                         intr_status =
 167                                          readl(&ha->qla4_8xxx_reg->host_status);
 168                                         ha->isp_ops->interrupt_service_routine(
 169                                             ha, intr_status);
 170                                         if (test_bit(AF_INTERRUPTS_ON,
 171                                             &ha->flags) &&
 172                                             test_bit(AF_INTx_ENABLED,
 173                                             &ha->flags))
 174                                                 qla4_8xxx_wr_32(ha,
 175                                                 ha->nx_legacy_intr.tgt_mask_reg,
 176                                                 0xfbff);
 177                                 }
 178                         } else {
 179                                 intr_status = readl(&ha->reg->ctrl_status);
 180                                 if (intr_status & INTR_PENDING) {
 181                                         /*
 182                                          * Service the interrupt.
 183                                          * The ISR will save the mailbox status
 184                                          * registers to a temporary storage
 185                                          * location in the adapter structure.
 186                                          */
 187                                         ha->mbox_status_count = outCount;
 188                                         ha->isp_ops->interrupt_service_routine(
 189                                             ha, intr_status);
 190                                 }
 191                         }
 192                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 193                         msleep(10);
 194                 }
 195         }
 196
 197         /* Check for mailbox timeout. */
 198         if (!test_bit(AF_MBOX_COMMAND_DONE, &ha->flags)) {
 199                 DEBUG2(printk("scsi%ld: Mailbox Cmd 0x%08X timed out ...,"
 200                               " Scheduling Adapter Reset\n", ha->host_no,
 201                               mbx_cmd[0]));
 202                 ha->mailbox_timeout_count++;
 203                 mbx_sts[0] = (-1);
 204                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
 205                 goto mbox_exit;
 206         }
 207
 208         /*
 209          * Copy the mailbox out registers to the caller's mailbox in/out
 210          * structure.
 211          */
 212         spin_lock_irqsave(&ha->hardware_lock, flags);
 213         for (i = 0; i < outCount; i++)
 214                 mbx_sts[i] = ha->mbox_status[i];
 215
 216         /* Set return status and error flags (if applicable). */
 217         switch (ha->mbox_status[0]) {
 218         case MBOX_STS_COMMAND_COMPLETE:
 219                 status = QLA_SUCCESS;
 220                 break;
 221
 222         case MBOX_STS_INTERMEDIATE_COMPLETION:
 223                 status = QLA_SUCCESS;
 224                 break;
 225
 226         case MBOX_STS_BUSY:
 227                 DEBUG2( printk("scsi%ld: %s: Cmd = %08X, ISP BUSY\n",
 228                                ha->host_no, __func__, mbx_cmd[0]));
 229                 ha->mailbox_timeout_count++;
 230                 break;
 231
 232         default:
 233                 DEBUG2(printk("scsi%ld: %s: **** FAILED, cmd = %08X, "
 234                               "sts = %08X ****\n", ha->host_no, __func__,
 235                               mbx_cmd[0], mbx_sts[0]));
 236                 break;
 237         }
 238         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 239
 240 mbox_exit:
 241         mutex_lock(&ha->mbox_sem);
 242         clear_bit(AF_MBOX_COMMAND, &ha->flags);
 243         mutex_unlock(&ha->mbox_sem);
 244         clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
 245
 246         return status;
 247 }
 248
 249 static uint8_t
 250 qla4xxx_set_ifcb(struct scsi_qla_host *ha, uint32_t *mbox_cmd,
 251                  uint32_t *mbox_sts, dma_addr_t init_fw_cb_dma)
 252 {
 253         memset(mbox_cmd, 0, sizeof(mbox_cmd[0]) * MBOX_REG_COUNT);
 254         memset(mbox_sts, 0, sizeof(mbox_sts[0]) * MBOX_REG_COUNT);
 255         mbox_cmd[0] = MBOX_CMD_INITIALIZE_FIRMWARE;
 256         mbox_cmd[1] = 0;
 257         mbox_cmd[2] = LSDW(init_fw_cb_dma);
 258         mbox_cmd[3] = MSDW(init_fw_cb_dma);
 259         mbox_cmd[4] = sizeof(struct addr_ctrl_blk);
 260         mbox_cmd[5] = (IFCB_VER_MAX << 8) | IFCB_VER_MIN;
 261
 262         if (qla4xxx_mailbox_command(ha, 6, 6, mbox_cmd, mbox_sts) !=
 263             QLA_SUCCESS) {
 264                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: "
 265                               "MBOX_CMD_INITIALIZE_FIRMWARE"
 266                               " failed w/ status %04X\n",
 267                               ha->host_no, __func__, mbox_sts[0]));
 268                 return QLA_ERROR;
 269         }
 270         return QLA_SUCCESS;
 271 }
 272
 273 static uint8_t
 274 qla4xxx_get_ifcb(struct scsi_qla_host *ha, uint32_t *mbox_cmd,
 275                  uint32_t *mbox_sts, dma_addr_t init_fw_cb_dma)
 276 {
 277         memset(mbox_cmd, 0, sizeof(mbox_cmd[0]) * MBOX_REG_COUNT);
 278         memset(mbox_sts, 0, sizeof(mbox_sts[0]) * MBOX_REG_COUNT);
 279         mbox_cmd[0] = MBOX_CMD_GET_INIT_FW_CTRL_BLOCK;
 280         mbox_cmd[2] = LSDW(init_fw_cb_dma);
 281         mbox_cmd[3] = MSDW(init_fw_cb_dma);
 282         mbox_cmd[4] = sizeof(struct addr_ctrl_blk);
 283
 284         if (qla4xxx_mailbox_command(ha, 5, 5, mbox_cmd, mbox_sts) !=
 285             QLA_SUCCESS) {
 286                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: "
 287                               "MBOX_CMD_GET_INIT_FW_CTRL_BLOCK"
 288                               " failed w/ status %04X\n",
 289                               ha->host_no, __func__, mbox_sts[0]));
 290                 return QLA_ERROR;
 291         }
 292         return QLA_SUCCESS;
 293 }
 294
 295 static void
 296 qla4xxx_update_local_ip(struct scsi_qla_host *ha,
 297                          struct addr_ctrl_blk  *init_fw_cb)
 298 {
 299         /* Save IPv4 Address Info */
 300         memcpy(ha->ip_address, init_fw_cb->ipv4_addr,
 301                 min(sizeof(ha->ip_address), sizeof(init_fw_cb->ipv4_addr)));
 302         memcpy(ha->subnet_mask, init_fw_cb->ipv4_subnet,
 303                 min(sizeof(ha->subnet_mask), sizeof(init_fw_cb->ipv4_subnet)));
 304         memcpy(ha->gateway, init_fw_cb->ipv4_gw_addr,
 305                 min(sizeof(ha->gateway), sizeof(init_fw_cb->ipv4_gw_addr)));
 306
 307         if (is_ipv6_enabled(ha)) {
 308                 /* Save IPv6 Address */
 309                 ha->ipv6_link_local_state = init_fw_cb->ipv6_lnk_lcl_addr_state;
 310                 ha->ipv6_addr0_state = init_fw_cb->ipv6_addr0_state;
 311                 ha->ipv6_addr1_state = init_fw_cb->ipv6_addr1_state;
 312                 ha->ipv6_default_router_state = init_fw_cb->ipv6_dflt_rtr_state;
 313                 ha->ipv6_link_local_addr.in6_u.u6_addr8[0] = 0xFE;
 314                 ha->ipv6_link_local_addr.in6_u.u6_addr8[1] = 0x80;
 315
 316                 memcpy(&ha->ipv6_link_local_addr.in6_u.u6_addr8[8],
 317                         init_fw_cb->ipv6_if_id,
 318                         min(sizeof(ha->ipv6_link_local_addr)/2,
 319                         sizeof(init_fw_cb->ipv6_if_id)));
 320                 memcpy(&ha->ipv6_addr0, init_fw_cb->ipv6_addr0,
 321                         min(sizeof(ha->ipv6_addr0),
 322                         sizeof(init_fw_cb->ipv6_addr0)));
 323                 memcpy(&ha->ipv6_addr1, init_fw_cb->ipv6_addr1,
 324                         min(sizeof(ha->ipv6_addr1),
 325                         sizeof(init_fw_cb->ipv6_addr1)));
 326                 memcpy(&ha->ipv6_default_router_addr,
 327                         init_fw_cb->ipv6_dflt_rtr_addr,
 328                         min(sizeof(ha->ipv6_default_router_addr),
 329                         sizeof(init_fw_cb->ipv6_dflt_rtr_addr)));
 330         }
 331 }
 332
 333 static uint8_t
 334 qla4xxx_update_local_ifcb(struct scsi_qla_host *ha,
 335                           uint32_t *mbox_cmd,
 336                           uint32_t *mbox_sts,
 337                           struct addr_ctrl_blk  *init_fw_cb,
 338                           dma_addr_t init_fw_cb_dma)
 339 {
 340         if (qla4xxx_get_ifcb(ha, mbox_cmd, mbox_sts, init_fw_cb_dma)
 341             != QLA_SUCCESS) {
 342                 DEBUG2(printk(KERN_WARNING
 343                               "scsi%ld: %s: Failed to get init_fw_ctrl_blk\n",
 344                               ha->host_no, __func__));
 345                 return QLA_ERROR;
 346         }
 347
 348         DEBUG2(qla4xxx_dump_buffer(init_fw_cb, sizeof(struct addr_ctrl_blk)));
 349
 350         /* Save some info in adapter structure. */
 351         ha->acb_version = init_fw_cb->acb_version;
 352         ha->firmware_options = le16_to_cpu(init_fw_cb->fw_options);
 353         ha->tcp_options = le16_to_cpu(init_fw_cb->ipv4_tcp_opts);
 354         ha->ipv4_options = le16_to_cpu(init_fw_cb->ipv4_ip_opts);
 355         ha->ipv4_addr_state = le16_to_cpu(init_fw_cb->ipv4_addr_state);
 356         ha->heartbeat_interval = init_fw_cb->hb_interval;
 357         memcpy(ha->name_string, init_fw_cb->iscsi_name,
 358                 min(sizeof(ha->name_string),
 359                 sizeof(init_fw_cb->iscsi_name)));
 360         /*memcpy(ha->alias, init_fw_cb->Alias,
 361                min(sizeof(ha->alias), sizeof(init_fw_cb->Alias)));*/
 362
 363         /* Save Command Line Paramater info */
 364         ha->discovery_wait = ql4xdiscoverywait;
 365
 366         if (ha->acb_version == ACB_SUPPORTED) {
 367                 ha->ipv6_options = init_fw_cb->ipv6_opts;
 368                 ha->ipv6_addl_options = init_fw_cb->ipv6_addtl_opts;
 369         }
 370         qla4xxx_update_local_ip(ha, init_fw_cb);
 371
 372         return QLA_SUCCESS;
 373 }
 374
 375 /**
 376  * qla4xxx_initialize_fw_cb - initializes firmware control block.
 377  * @ha: Pointer to host adapter structure.
 378  **/
 379 int qla4xxx_initialize_fw_cb(struct scsi_qla_host * ha)
 380 {
 381         struct addr_ctrl_blk *init_fw_cb;
 382         dma_addr_t init_fw_cb_dma;
 383         uint32_t mbox_cmd[MBOX_REG_COUNT];
 384         uint32_t mbox_sts[MBOX_REG_COUNT];
 385         int status = QLA_ERROR;
 386
 387         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
 388                                         sizeof(struct addr_ctrl_blk),
 389                                         &init_fw_cb_dma, GFP_KERNEL);
 390         if (init_fw_cb == NULL) {
 391                 DEBUG2(printk("scsi%ld: %s: Unable to alloc init_cb\n",
 392                               ha->host_no, __func__));
 393                 goto exit_init_fw_cb_no_free;
 394         }
 395         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
 396
 397         /* Get Initialize Firmware Control Block. */
 398         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 399         memset(&mbox_sts, 0, sizeof(mbox_sts));
 400
 401         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma) !=
 402             QLA_SUCCESS) {
 403                 dma_free_coherent(&ha->pdev->dev,
 404                                   sizeof(struct addr_ctrl_blk),
 405                                   init_fw_cb, init_fw_cb_dma);
 406                 goto exit_init_fw_cb;
 407         }
 408
 409         /* Initialize request and response queues. */
 410         qla4xxx_init_rings(ha);
 411
 412         /* Fill in the request and response queue information. */
 413         init_fw_cb->rqq_consumer_idx = cpu_to_le16(ha->request_out);
 414         init_fw_cb->compq_producer_idx = cpu_to_le16(ha->response_in);
 415         init_fw_cb->rqq_len = __constant_cpu_to_le16(REQUEST_QUEUE_DEPTH);
 416         init_fw_cb->compq_len = __constant_cpu_to_le16(RESPONSE_QUEUE_DEPTH);
 417         init_fw_cb->rqq_addr_lo = cpu_to_le32(LSDW(ha->request_dma));
 418         init_fw_cb->rqq_addr_hi = cpu_to_le32(MSDW(ha->request_dma));
 419         init_fw_cb->compq_addr_lo = cpu_to_le32(LSDW(ha->response_dma));
 420         init_fw_cb->compq_addr_hi = cpu_to_le32(MSDW(ha->response_dma));
 421         init_fw_cb->shdwreg_addr_lo = cpu_to_le32(LSDW(ha->shadow_regs_dma));
 422         init_fw_cb->shdwreg_addr_hi = cpu_to_le32(MSDW(ha->shadow_regs_dma));
 423
 424         /* Set up required options. */
 425         init_fw_cb->fw_options |=
 426                 __constant_cpu_to_le16(FWOPT_SESSION_MODE |
 427                                        FWOPT_INITIATOR_MODE);
 428         init_fw_cb->fw_options &= __constant_cpu_to_le16(~FWOPT_TARGET_MODE);
 429
 430         if (qla4xxx_set_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)
 431                 != QLA_SUCCESS) {
 432                 DEBUG2(printk(KERN_WARNING
 433                               "scsi%ld: %s: Failed to set init_fw_ctrl_blk\n",
 434                               ha->host_no, __func__));
 435                 goto exit_init_fw_cb;
 436         }
 437
 438         if (qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0],
 439                 init_fw_cb, init_fw_cb_dma) != QLA_SUCCESS) {
 440                 DEBUG2(printk("scsi%ld: %s: Failed to update local ifcb\n",
 441                                 ha->host_no, __func__));
 442                 goto exit_init_fw_cb;
 443         }
 444         status = QLA_SUCCESS;
 445
 446 exit_init_fw_cb:
 447         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
 448                                 init_fw_cb, init_fw_cb_dma);
 449 exit_init_fw_cb_no_free:
 450         return status;
 451 }
 452
 453 /**
 454  * qla4xxx_get_dhcp_ip_address - gets HBA ip address via DHCP
 455  * @ha: Pointer to host adapter structure.
 456  **/
 457 int qla4xxx_get_dhcp_ip_address(struct scsi_qla_host * ha)
 458 {
 459         struct addr_ctrl_blk *init_fw_cb;
 460         dma_addr_t init_fw_cb_dma;
 461         uint32_t mbox_cmd[MBOX_REG_COUNT];
 462         uint32_t mbox_sts[MBOX_REG_COUNT];
 463
 464         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
 465                                         sizeof(struct addr_ctrl_blk),
 466                                         &init_fw_cb_dma, GFP_KERNEL);
 467         if (init_fw_cb == NULL) {
 468                 printk("scsi%ld: %s: Unable to alloc init_cb\n", ha->host_no,
 469                        __func__);
 470                 return QLA_ERROR;
 471         }
 472
 473         /* Get Initialize Firmware Control Block. */
 474         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
 475         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma) !=
 476             QLA_SUCCESS) {
 477                 DEBUG2(printk("scsi%ld: %s: Failed to get init_fw_ctrl_blk\n",
 478                               ha->host_no, __func__));
 479                 dma_free_coherent(&ha->pdev->dev,
 480                                   sizeof(struct addr_ctrl_blk),
 481                                   init_fw_cb, init_fw_cb_dma);
 482                 return QLA_ERROR;
 483         }
 484
 485         /* Save IP Address. */
 486         qla4xxx_update_local_ip(ha, init_fw_cb);
 487         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
 488                                 init_fw_cb, init_fw_cb_dma);
 489
 490         return QLA_SUCCESS;
 491 }
 492
 493 /**
 494  * qla4xxx_get_firmware_state - gets firmware state of HBA
 495  * @ha: Pointer to host adapter structure.
 496  **/
 497 int qla4xxx_get_firmware_state(struct scsi_qla_host * ha)
 498 {
 499         uint32_t mbox_cmd[MBOX_REG_COUNT];
 500         uint32_t mbox_sts[MBOX_REG_COUNT];
 501
 502         /* Get firmware version */
 503         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 504         memset(&mbox_sts, 0, sizeof(mbox_sts));
 505
 506         mbox_cmd[0] = MBOX_CMD_GET_FW_STATE;
 507
 508         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 4, &mbox_cmd[0], &mbox_sts[0]) !=
 509             QLA_SUCCESS) {
 510                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATE failed w/ "
 511                               "status %04X\n", ha->host_no, __func__,
 512                               mbox_sts[0]));
 513                 return QLA_ERROR;
 514         }
 515         ha->firmware_state = mbox_sts[1];
 516         ha->board_id = mbox_sts[2];
 517         ha->addl_fw_state = mbox_sts[3];
 518         DEBUG2(printk("scsi%ld: %s firmware_state=0x%x\n",
 519                       ha->host_no, __func__, ha->firmware_state);)
 520
 521         return QLA_SUCCESS;
 522 }
 523
 524 /**
 525  * qla4xxx_get_firmware_status - retrieves firmware status
 526  * @ha: Pointer to host adapter structure.
 527  **/
 528 int qla4xxx_get_firmware_status(struct scsi_qla_host * ha)
 529 {
 530         uint32_t mbox_cmd[MBOX_REG_COUNT];
 531         uint32_t mbox_sts[MBOX_REG_COUNT];
 532
 533         /* Get firmware version */
 534         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 535         memset(&mbox_sts, 0, sizeof(mbox_sts));
 536
 537         mbox_cmd[0] = MBOX_CMD_GET_FW_STATUS;
 538
 539         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 3, &mbox_cmd[0], &mbox_sts[0]) !=
 540             QLA_SUCCESS) {
 541                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATUS failed w/ "
 542                               "status %04X\n", ha->host_no, __func__,
 543                               mbox_sts[0]));
 544                 return QLA_ERROR;
 545         }
 546
 547         ql4_printk(KERN_INFO, ha, "%ld firmare IOCBs available (%d).\n",
 548             ha->host_no, mbox_cmd[2]);
 549
 550         return QLA_SUCCESS;
 551 }
 552
 553 /**
 554  * qla4xxx_get_fwddb_entry - retrieves firmware ddb entry
 555  * @ha: Pointer to host adapter structure.
 556  * @fw_ddb_index: Firmware's device database index
 557  * @fw_ddb_entry: Pointer to firmware's device database entry structure
 558  * @num_valid_ddb_entries: Pointer to number of valid ddb entries
 559  * @next_ddb_index: Pointer to next valid device database index
 560  * @fw_ddb_device_state: Pointer to device state
 561  **/
 562 int qla4xxx_get_fwddb_entry(struct scsi_qla_host *ha,
 563                             uint16_t fw_ddb_index,
 564                             struct dev_db_entry *fw_ddb_entry,
 565                             dma_addr_t fw_ddb_entry_dma,
 566                             uint32_t *num_valid_ddb_entries,
 567                             uint32_t *next_ddb_index,
 568                             uint32_t *fw_ddb_device_state,
 569                             uint32_t *conn_err_detail,
 570                             uint16_t *tcp_source_port_num,
 571                             uint16_t *connection_id)
 572 {
 573         int status = QLA_ERROR;
 574         uint16_t options;
 575         uint32_t mbox_cmd[MBOX_REG_COUNT];
 576         uint32_t mbox_sts[MBOX_REG_COUNT];
 577
 578         /* Make sure the device index is valid */
 579         if (fw_ddb_index >= MAX_DDB_ENTRIES) {
 580                 DEBUG2(printk("scsi%ld: %s: ddb [%d] out of range.\n",
 581                               ha->host_no, __func__, fw_ddb_index));
 582                 goto exit_get_fwddb;
 583         }
 584         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 585         memset(&mbox_sts, 0, sizeof(mbox_sts));
 586
 587         mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY;
 588         mbox_cmd[1] = (uint32_t) fw_ddb_index;
 589         mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
 590         mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
 591         mbox_cmd[4] = sizeof(struct dev_db_entry);
 592
 593         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 7, &mbox_cmd[0], &mbox_sts[0]) ==
 594             QLA_ERROR) {
 595                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_DATABASE_ENTRY failed"
 596                               " with status 0x%04X\n", ha->host_no, __func__,
 597                               mbox_sts[0]));
 598                 goto exit_get_fwddb;
 599         }
 600         if (fw_ddb_index != mbox_sts[1]) {
 601                 DEBUG2(printk("scsi%ld: %s: ddb mismatch [%d] != [%d].\n",
 602                               ha->host_no, __func__, fw_ddb_index,
 603                               mbox_sts[1]));
 604                 goto exit_get_fwddb;
 605         }
 606         if (fw_ddb_entry) {
 607                 options = le16_to_cpu(fw_ddb_entry->options);
 608                 if (options & DDB_OPT_IPV6_DEVICE) {
 609                         ql4_printk(KERN_INFO, ha, "%s: DDB[%d] MB0 %04x Tot %d "
 610                                 "Next %d State %04x ConnErr %08x %pI6 "
 611                                 ":%04d \"%s\"\n", __func__, fw_ddb_index,
 612                                 mbox_sts[0], mbox_sts[2], mbox_sts[3],
 613                                 mbox_sts[4], mbox_sts[5],
 614                                 fw_ddb_entry->ip_addr,
 615                                 le16_to_cpu(fw_ddb_entry->port),
 616                                 fw_ddb_entry->iscsi_name);
 617                 } else {
 618                         ql4_printk(KERN_INFO, ha, "%s: DDB[%d] MB0 %04x Tot %d "
 619                                 "Next %d State %04x ConnErr %08x %pI4 "
 620                                 ":%04d \"%s\"\n", __func__, fw_ddb_index,
 621                                 mbox_sts[0], mbox_sts[2], mbox_sts[3],
 622                                 mbox_sts[4], mbox_sts[5],
 623                                 fw_ddb_entry->ip_addr,
 624                                 le16_to_cpu(fw_ddb_entry->port),
 625                                 fw_ddb_entry->iscsi_name);
 626                 }
 627         }
 628         if (num_valid_ddb_entries)
 629                 *num_valid_ddb_entries = mbox_sts[2];
 630         if (next_ddb_index)
 631                 *next_ddb_index = mbox_sts[3];
 632         if (fw_ddb_device_state)
 633                 *fw_ddb_device_state = mbox_sts[4];
 634
 635         /*
 636          * RA: This mailbox has been changed to pass connection error and
 637          * details.  Its true for ISP4010 as per Version E - Not sure when it
 638          * was changed.  Get the time2wait from the fw_dd_entry field :
 639          * default_time2wait which we call it as minTime2Wait DEV_DB_ENTRY
 640          * struct.
 641          */
 642         if (conn_err_detail)
 643                 *conn_err_detail = mbox_sts[5];
 644         if (tcp_source_port_num)
 645                 *tcp_source_port_num = (uint16_t) (mbox_sts[6] >> 16);
 646         if (connection_id)
 647                 *connection_id = (uint16_t) mbox_sts[6] & 0x00FF;
 648         status = QLA_SUCCESS;
 649
 650 exit_get_fwddb:
 651         return status;
 652 }
 653
 654 /**
 655  * qla4xxx_set_fwddb_entry - sets a ddb entry.
 656  * @ha: Pointer to host adapter structure.
 657  * @fw_ddb_index: Firmware's device database index
 658  * @fw_ddb_entry: Pointer to firmware's ddb entry structure, or NULL.
 659  *
 660  * This routine initializes or updates the adapter's device database
 661  * entry for the specified device. It also triggers a login for the
 662  * specified device. Therefore, it may also be used as a secondary
 663  * login routine when a NULL pointer is specified for the fw_ddb_entry.
 664  **/
 665 int qla4xxx_set_ddb_entry(struct scsi_qla_host * ha, uint16_t fw_ddb_index,
 666                           dma_addr_t fw_ddb_entry_dma)
 667 {
 668         uint32_t mbox_cmd[MBOX_REG_COUNT];
 669         uint32_t mbox_sts[MBOX_REG_COUNT];
 670         int status;
 671
 672         /* Do not wait for completion. The firmware will send us an
 673          * ASTS_DATABASE_CHANGED (0x8014) to notify us of the login status.
 674          */
 675         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 676         memset(&mbox_sts, 0, sizeof(mbox_sts));
 677
 678         mbox_cmd[0] = MBOX_CMD_SET_DATABASE_ENTRY;
 679         mbox_cmd[1] = (uint32_t) fw_ddb_index;
 680         mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
 681         mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
 682         mbox_cmd[4] = sizeof(struct dev_db_entry);
 683
 684         status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0],
 685             &mbox_sts[0]);
 686         DEBUG2(printk("scsi%ld: %s: status=%d mbx0=0x%x mbx4=0x%x\n",
 687             ha->host_no, __func__, status, mbox_sts[0], mbox_sts[4]);)
 688
 689         return status;
 690 }
 691
 692 /**
 693  * qla4xxx_get_crash_record - retrieves crash record.
 694  * @ha: Pointer to host adapter structure.
 695  *
 696  * This routine retrieves a crash record from the QLA4010 after an 8002h aen.
 697  **/
 698 void qla4xxx_get_crash_record(struct scsi_qla_host * ha)
 699 {
 700         uint32_t mbox_cmd[MBOX_REG_COUNT];
 701         uint32_t mbox_sts[MBOX_REG_COUNT];
 702         struct crash_record *crash_record = NULL;
 703         dma_addr_t crash_record_dma = 0;
 704         uint32_t crash_record_size = 0;
 705
 706         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 707         memset(&mbox_sts, 0, sizeof(mbox_cmd));
 708
 709         /* Get size of crash record. */
 710         mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
 711
 712         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 713             QLA_SUCCESS) {
 714                 DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve size!\n",
 715                               ha->host_no, __func__));
 716                 goto exit_get_crash_record;
 717         }
 718         crash_record_size = mbox_sts[4];
 719         if (crash_record_size == 0) {
 720                 DEBUG2(printk("scsi%ld: %s: ERROR: Crash record size is 0!\n",
 721                               ha->host_no, __func__));
 722                 goto exit_get_crash_record;
 723         }
 724
 725         /* Alloc Memory for Crash Record. */
 726         crash_record = dma_alloc_coherent(&ha->pdev->dev, crash_record_size,
 727                                           &crash_record_dma, GFP_KERNEL);
 728         if (crash_record == NULL)
 729                 goto exit_get_crash_record;
 730
 731         /* Get Crash Record. */
 732         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 733         memset(&mbox_sts, 0, sizeof(mbox_cmd));
 734
 735         mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
 736         mbox_cmd[2] = LSDW(crash_record_dma);
 737         mbox_cmd[3] = MSDW(crash_record_dma);
 738         mbox_cmd[4] = crash_record_size;
 739
 740         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 741             QLA_SUCCESS)
 742                 goto exit_get_crash_record;
 743
 744         /* Dump Crash Record. */
 745
 746 exit_get_crash_record:
 747         if (crash_record)
 748                 dma_free_coherent(&ha->pdev->dev, crash_record_size,
 749                                   crash_record, crash_record_dma);
 750 }
 751
 752 /**
 753  * qla4xxx_get_conn_event_log - retrieves connection event log
 754  * @ha: Pointer to host adapter structure.
 755  **/
 756 void qla4xxx_get_conn_event_log(struct scsi_qla_host * ha)
 757 {
 758         uint32_t mbox_cmd[MBOX_REG_COUNT];
 759         uint32_t mbox_sts[MBOX_REG_COUNT];
 760         struct conn_event_log_entry *event_log = NULL;
 761         dma_addr_t event_log_dma = 0;
 762         uint32_t event_log_size = 0;
 763         uint32_t num_valid_entries;
 764         uint32_t      oldest_entry = 0;
 765         uint32_t        max_event_log_entries;
 766         uint8_t         i;
 767
 768
 769         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 770         memset(&mbox_sts, 0, sizeof(mbox_cmd));
 771
 772         /* Get size of crash record. */
 773         mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
 774
 775         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 776             QLA_SUCCESS)
 777                 goto exit_get_event_log;
 778
 779         event_log_size = mbox_sts[4];
 780         if (event_log_size == 0)
 781                 goto exit_get_event_log;
 782
 783         /* Alloc Memory for Crash Record. */
 784         event_log = dma_alloc_coherent(&ha->pdev->dev, event_log_size,
 785                                        &event_log_dma, GFP_KERNEL);
 786         if (event_log == NULL)
 787                 goto exit_get_event_log;
 788
 789         /* Get Crash Record. */
 790         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 791         memset(&mbox_sts, 0, sizeof(mbox_cmd));
 792
 793         mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
 794         mbox_cmd[2] = LSDW(event_log_dma);
 795         mbox_cmd[3] = MSDW(event_log_dma);
 796
 797         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 798             QLA_SUCCESS) {
 799                 DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve event "
 800                               "log!\n", ha->host_no, __func__));
 801                 goto exit_get_event_log;
 802         }
 803
 804         /* Dump Event Log. */
 805         num_valid_entries = mbox_sts[1];
 806
 807         max_event_log_entries = event_log_size /
 808                 sizeof(struct conn_event_log_entry);
 809
 810         if (num_valid_entries > max_event_log_entries)
 811                 oldest_entry = num_valid_entries % max_event_log_entries;
 812
 813         DEBUG3(printk("scsi%ld: Connection Event Log Dump (%d entries):\n",
 814                       ha->host_no, num_valid_entries));
 815
 816         if (ql4xextended_error_logging == 3) {
 817                 if (oldest_entry == 0) {
 818                         /* Circular Buffer has not wrapped around */
 819                         for (i=0; i < num_valid_entries; i++) {
 820                                 qla4xxx_dump_buffer((uint8_t *)event_log+
 821                                                     (i*sizeof(*event_log)),
 822                                                     sizeof(*event_log));
 823                         }
 824                 }
 825                 else {
 826                         /* Circular Buffer has wrapped around -
 827                          * display accordingly*/
 828                         for (i=oldest_entry; i < max_event_log_entries; i++) {
 829                                 qla4xxx_dump_buffer((uint8_t *)event_log+
 830                                                     (i*sizeof(*event_log)),
 831                                                     sizeof(*event_log));
 832                         }
 833                         for (i=0; i < oldest_entry; i++) {
 834                                 qla4xxx_dump_buffer((uint8_t *)event_log+
 835                                                     (i*sizeof(*event_log)),
 836                                                     sizeof(*event_log));
 837                         }
 838                 }
 839         }
 840
 841 exit_get_event_log:
 842         if (event_log)
 843                 dma_free_coherent(&ha->pdev->dev, event_log_size, event_log,
 844                                   event_log_dma);
 845 }
 846
 847 /**
 848  * qla4xxx_abort_task - issues Abort Task
 849  * @ha: Pointer to host adapter structure.
 850  * @srb: Pointer to srb entry
 851  *
 852  * This routine performs a LUN RESET on the specified target/lun.
 853  * The caller must ensure that the ddb_entry and lun_entry pointers
 854  * are valid before calling this routine.
 855  **/
 856 int qla4xxx_abort_task(struct scsi_qla_host *ha, struct srb *srb)
 857 {
 858         uint32_t mbox_cmd[MBOX_REG_COUNT];
 859         uint32_t mbox_sts[MBOX_REG_COUNT];
 860         struct scsi_cmnd *cmd = srb->cmd;
 861         int status = QLA_SUCCESS;
 862         unsigned long flags = 0;
 863         uint32_t index;
 864
 865         /*
 866          * Send abort task command to ISP, so that the ISP will return
 867          * request with ABORT status
 868          */
 869         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 870         memset(&mbox_sts, 0, sizeof(mbox_sts));
 871
 872         spin_lock_irqsave(&ha->hardware_lock, flags);
 873         index = (unsigned long)(unsigned char *)cmd->host_scribble;
 874         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 875
 876         /* Firmware already posted completion on response queue */
 877         if (index == MAX_SRBS)
 878                 return status;
 879
 880         mbox_cmd[0] = MBOX_CMD_ABORT_TASK;
 881         mbox_cmd[1] = srb->fw_ddb_index;
 882         mbox_cmd[2] = index;
 883         /* Immediate Command Enable */
 884         mbox_cmd[5] = 0x01;
 885
 886         qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0],
 887             &mbox_sts[0]);
 888         if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE) {
 889                 status = QLA_ERROR;
 890
 891                 DEBUG2(printk(KERN_WARNING "scsi%ld:%d:%d: abort task FAILED: "
 892                     "mbx0=%04X, mb1=%04X, mb2=%04X, mb3=%04X, mb4=%04X\n",
 893                     ha->host_no, cmd->device->id, cmd->device->lun, mbox_sts[0],
 894                     mbox_sts[1], mbox_sts[2], mbox_sts[3], mbox_sts[4]));
 895         }
 896
 897         return status;
 898 }
 899
 900 /**
 901  * qla4xxx_reset_lun - issues LUN Reset
 902  * @ha: Pointer to host adapter structure.
 903  * @ddb_entry: Pointer to device database entry
 904  * @lun: lun number
 905  *
 906  * This routine performs a LUN RESET on the specified target/lun.
 907  * The caller must ensure that the ddb_entry and lun_entry pointers
 908  * are valid before calling this routine.
 909  **/
 910 int qla4xxx_reset_lun(struct scsi_qla_host * ha, struct ddb_entry * ddb_entry,
 911                       int lun)
 912 {
 913         uint32_t mbox_cmd[MBOX_REG_COUNT];
 914         uint32_t mbox_sts[MBOX_REG_COUNT];
 915         int status = QLA_SUCCESS;
 916
 917         DEBUG2(printk("scsi%ld:%d:%d: lun reset issued\n", ha->host_no,
 918                       ddb_entry->fw_ddb_index, lun));
 919
 920         /*
 921          * Send lun reset command to ISP, so that the ISP will return all
 922          * outstanding requests with RESET status
 923          */
 924         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 925         memset(&mbox_sts, 0, sizeof(mbox_sts));
 926
 927         mbox_cmd[0] = MBOX_CMD_LUN_RESET;
 928         mbox_cmd[1] = ddb_entry->fw_ddb_index;
 929         mbox_cmd[2] = lun << 8;
 930         mbox_cmd[5] = 0x01;     /* Immediate Command Enable */
 931
 932         qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], &mbox_sts[0]);
 933         if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
 934             mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
 935                 status = QLA_ERROR;
 936
 937         return status;
 938 }
 939
 940 /**
 941  * qla4xxx_reset_target - issues target Reset
 942  * @ha: Pointer to host adapter structure.
 943  * @db_entry: Pointer to device database entry
 944  * @un_entry: Pointer to lun entry structure
 945  *
 946  * This routine performs a TARGET RESET on the specified target.
 947  * The caller must ensure that the ddb_entry pointers
 948  * are valid before calling this routine.
 949  **/
 950 int qla4xxx_reset_target(struct scsi_qla_host *ha,
 951                          struct ddb_entry *ddb_entry)
 952 {
 953         uint32_t mbox_cmd[MBOX_REG_COUNT];
 954         uint32_t mbox_sts[MBOX_REG_COUNT];
 955         int status = QLA_SUCCESS;
 956
 957         DEBUG2(printk("scsi%ld:%d: target reset issued\n", ha->host_no,
 958                       ddb_entry->fw_ddb_index));
 959
 960         /*
 961          * Send target reset command to ISP, so that the ISP will return all
 962          * outstanding requests with RESET status
 963          */
 964         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 965         memset(&mbox_sts, 0, sizeof(mbox_sts));
 966
 967         mbox_cmd[0] = MBOX_CMD_TARGET_WARM_RESET;
 968         mbox_cmd[1] = ddb_entry->fw_ddb_index;
 969         mbox_cmd[5] = 0x01;     /* Immediate Command Enable */
 970
 971         qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0],
 972                                 &mbox_sts[0]);
 973         if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
 974             mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
 975                 status = QLA_ERROR;
 976
 977         return status;
 978 }
 979
 980 int qla4xxx_get_flash(struct scsi_qla_host * ha, dma_addr_t dma_addr,
 981                       uint32_t offset, uint32_t len)
 982 {
 983         uint32_t mbox_cmd[MBOX_REG_COUNT];
 984         uint32_t mbox_sts[MBOX_REG_COUNT];
 985
 986         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 987         memset(&mbox_sts, 0, sizeof(mbox_sts));
 988
 989         mbox_cmd[0] = MBOX_CMD_READ_FLASH;
 990         mbox_cmd[1] = LSDW(dma_addr);
 991         mbox_cmd[2] = MSDW(dma_addr);
 992         mbox_cmd[3] = offset;
 993         mbox_cmd[4] = len;
 994
 995         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 2, &mbox_cmd[0], &mbox_sts[0]) !=
 996             QLA_SUCCESS) {
 997                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_READ_FLASH, failed w/ "
 998                     "status %04X %04X, offset %08x, len %08x\n", ha->host_no,
 999                     __func__, mbox_sts[0], mbox_sts[1], offset, len));
1000                 return QLA_ERROR;
1001         }
1002         return QLA_SUCCESS;
1003 }
1004
1005 /**
1006  * qla4xxx_get_fw_version - gets firmware version
1007  * @ha: Pointer to host adapter structure.
1008  *
1009  * Retrieves the firmware version on HBA. In QLA4010, mailboxes 2 & 3 may
1010  * hold an address for data.  Make sure that we write 0 to those mailboxes,
1011  * if unused.
1012  **/
1013 int qla4xxx_get_fw_version(struct scsi_qla_host * ha)
1014 {
1015         uint32_t mbox_cmd[MBOX_REG_COUNT];
1016         uint32_t mbox_sts[MBOX_REG_COUNT];
1017
1018         /* Get firmware version. */
1019         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1020         memset(&mbox_sts, 0, sizeof(mbox_sts));
1021
1022         mbox_cmd[0] = MBOX_CMD_ABOUT_FW;
1023
1024         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
1025             QLA_SUCCESS) {
1026                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_ABOUT_FW failed w/ "
1027                     "status %04X\n", ha->host_no, __func__, mbox_sts[0]));
1028                 return QLA_ERROR;
1029         }
1030
1031         /* Save firmware version information. */
1032         ha->firmware_version[0] = mbox_sts[1];
1033         ha->firmware_version[1] = mbox_sts[2];
1034         ha->patch_number = mbox_sts[3];
1035         ha->build_number = mbox_sts[4];
1036
1037         return QLA_SUCCESS;
1038 }
1039
1040 static int qla4xxx_get_default_ddb(struct scsi_qla_host *ha,
1041                                    dma_addr_t dma_addr)
1042 {
1043         uint32_t mbox_cmd[MBOX_REG_COUNT];
1044         uint32_t mbox_sts[MBOX_REG_COUNT];
1045
1046         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1047         memset(&mbox_sts, 0, sizeof(mbox_sts));
1048
1049         mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY_DEFAULTS;
1050         mbox_cmd[2] = LSDW(dma_addr);
1051         mbox_cmd[3] = MSDW(dma_addr);
1052
1053         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], &mbox_sts[0]) !=
1054             QLA_SUCCESS) {
1055                 DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
1056                      ha->host_no, __func__, mbox_sts[0]));
1057                 return QLA_ERROR;
1058         }
1059         return QLA_SUCCESS;
1060 }
1061
1062 static int qla4xxx_req_ddb_entry(struct scsi_qla_host *ha, uint32_t *ddb_index)
1063 {
1064         uint32_t mbox_cmd[MBOX_REG_COUNT];
1065         uint32_t mbox_sts[MBOX_REG_COUNT];
1066
1067         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1068         memset(&mbox_sts, 0, sizeof(mbox_sts));
1069
1070         mbox_cmd[0] = MBOX_CMD_REQUEST_DATABASE_ENTRY;
1071         mbox_cmd[1] = MAX_PRST_DEV_DB_ENTRIES;
1072
1073         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 3, &mbox_cmd[0], &mbox_sts[0]) !=
1074             QLA_SUCCESS) {
1075                 if (mbox_sts[0] == MBOX_STS_COMMAND_ERROR) {
1076                         *ddb_index = mbox_sts[2];
1077                 } else {
1078                         DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
1079                              ha->host_no, __func__, mbox_sts[0]));
1080                         return QLA_ERROR;
1081                 }
1082         } else {
1083                 *ddb_index = MAX_PRST_DEV_DB_ENTRIES;
1084         }
1085
1086         return QLA_SUCCESS;
1087 }
1088
1089
1090 int qla4xxx_send_tgts(struct scsi_qla_host *ha, char *ip, uint16_t port)
1091 {
1092         struct dev_db_entry *fw_ddb_entry;
1093         dma_addr_t fw_ddb_entry_dma;
1094         uint32_t ddb_index;
1095         int ret_val = QLA_SUCCESS;
1096
1097
1098         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
1099                                           sizeof(*fw_ddb_entry),
1100                                           &fw_ddb_entry_dma, GFP_KERNEL);
1101         if (!fw_ddb_entry) {
1102                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
1103                               ha->host_no, __func__));
1104                 ret_val = QLA_ERROR;
1105                 goto exit_send_tgts_no_free;
1106         }
1107
1108         ret_val = qla4xxx_get_default_ddb(ha, fw_ddb_entry_dma);
1109         if (ret_val != QLA_SUCCESS)
1110                 goto exit_send_tgts;
1111
1112         ret_val = qla4xxx_req_ddb_entry(ha, &ddb_index);
1113         if (ret_val != QLA_SUCCESS)
1114                 goto exit_send_tgts;
1115
1116         memset(fw_ddb_entry->iscsi_alias, 0,
1117                sizeof(fw_ddb_entry->iscsi_alias));
1118
1119         memset(fw_ddb_entry->iscsi_name, 0,
1120                sizeof(fw_ddb_entry->iscsi_name));
1121
1122         memset(fw_ddb_entry->ip_addr, 0, sizeof(fw_ddb_entry->ip_addr));
1123         memset(fw_ddb_entry->tgt_addr, 0,
1124                sizeof(fw_ddb_entry->tgt_addr));
1125
1126         fw_ddb_entry->options = (DDB_OPT_DISC_SESSION | DDB_OPT_TARGET);
1127         fw_ddb_entry->port = cpu_to_le16(ntohs(port));
1128
1129         fw_ddb_entry->ip_addr[0] = *ip;
1130         fw_ddb_entry->ip_addr[1] = *(ip + 1);
1131         fw_ddb_entry->ip_addr[2] = *(ip + 2);
1132         fw_ddb_entry->ip_addr[3] = *(ip + 3);
1133
1134         ret_val = qla4xxx_set_ddb_entry(ha, ddb_index, fw_ddb_entry_dma);
1135
1136 exit_send_tgts:
1137         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1138                           fw_ddb_entry, fw_ddb_entry_dma);
1139 exit_send_tgts_no_free:
1140         return ret_val;
1141 }
1142