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->port_down_retry_count = le16_to_cpu(init_fw_cb->conn_ka_timeout);
 365         ha->discovery_wait = ql4xdiscoverywait;
 366
 367         if (ha->acb_version == ACB_SUPPORTED) {
 368                 ha->ipv6_options = init_fw_cb->ipv6_opts;
 369                 ha->ipv6_addl_options = init_fw_cb->ipv6_addtl_opts;
 370         }
 371         qla4xxx_update_local_ip(ha, init_fw_cb);
 372
 373         return QLA_SUCCESS;
 374 }
 375
 376 /**
 377  * qla4xxx_initialize_fw_cb - initializes firmware control block.
 378  * @ha: Pointer to host adapter structure.
 379  **/
 380 int qla4xxx_initialize_fw_cb(struct scsi_qla_host * ha)
 381 {
 382         struct addr_ctrl_blk *init_fw_cb;
 383         dma_addr_t init_fw_cb_dma;
 384         uint32_t mbox_cmd[MBOX_REG_COUNT];
 385         uint32_t mbox_sts[MBOX_REG_COUNT];
 386         int status = QLA_ERROR;
 387
 388         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
 389                                         sizeof(struct addr_ctrl_blk),
 390                                         &init_fw_cb_dma, GFP_KERNEL);
 391         if (init_fw_cb == NULL) {
 392                 DEBUG2(printk("scsi%ld: %s: Unable to alloc init_cb\n",
 393                               ha->host_no, __func__));
 394                 goto exit_init_fw_cb_no_free;
 395         }
 396         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
 397
 398         /* Get Initialize Firmware Control Block. */
 399         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 400         memset(&mbox_sts, 0, sizeof(mbox_sts));
 401
 402         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma) !=
 403             QLA_SUCCESS) {
 404                 dma_free_coherent(&ha->pdev->dev,
 405                                   sizeof(struct addr_ctrl_blk),
 406                                   init_fw_cb, init_fw_cb_dma);
 407                 goto exit_init_fw_cb;
 408         }
 409
 410         /* Initialize request and response queues. */
 411         qla4xxx_init_rings(ha);
 412
 413         /* Fill in the request and response queue information. */
 414         init_fw_cb->rqq_consumer_idx = cpu_to_le16(ha->request_out);
 415         init_fw_cb->compq_producer_idx = cpu_to_le16(ha->response_in);
 416         init_fw_cb->rqq_len = __constant_cpu_to_le16(REQUEST_QUEUE_DEPTH);
 417         init_fw_cb->compq_len = __constant_cpu_to_le16(RESPONSE_QUEUE_DEPTH);
 418         init_fw_cb->rqq_addr_lo = cpu_to_le32(LSDW(ha->request_dma));
 419         init_fw_cb->rqq_addr_hi = cpu_to_le32(MSDW(ha->request_dma));
 420         init_fw_cb->compq_addr_lo = cpu_to_le32(LSDW(ha->response_dma));
 421         init_fw_cb->compq_addr_hi = cpu_to_le32(MSDW(ha->response_dma));
 422         init_fw_cb->shdwreg_addr_lo = cpu_to_le32(LSDW(ha->shadow_regs_dma));
 423         init_fw_cb->shdwreg_addr_hi = cpu_to_le32(MSDW(ha->shadow_regs_dma));
 424
 425         /* Set up required options. */
 426         init_fw_cb->fw_options |=
 427                 __constant_cpu_to_le16(FWOPT_SESSION_MODE |
 428                                        FWOPT_INITIATOR_MODE);
 429         init_fw_cb->fw_options &= __constant_cpu_to_le16(~FWOPT_TARGET_MODE);
 430
 431         if (qla4xxx_set_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)
 432                 != QLA_SUCCESS) {
 433                 DEBUG2(printk(KERN_WARNING
 434                               "scsi%ld: %s: Failed to set init_fw_ctrl_blk\n",
 435                               ha->host_no, __func__));
 436                 goto exit_init_fw_cb;
 437         }
 438
 439         if (qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0],
 440                 init_fw_cb, init_fw_cb_dma) != QLA_SUCCESS) {
 441                 DEBUG2(printk("scsi%ld: %s: Failed to update local ifcb\n",
 442                                 ha->host_no, __func__));
 443                 goto exit_init_fw_cb;
 444         }
 445         status = QLA_SUCCESS;
 446
 447 exit_init_fw_cb:
 448         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
 449                                 init_fw_cb, init_fw_cb_dma);
 450 exit_init_fw_cb_no_free:
 451         return status;
 452 }
 453
 454 /**
 455  * qla4xxx_get_dhcp_ip_address - gets HBA ip address via DHCP
 456  * @ha: Pointer to host adapter structure.
 457  **/
 458 int qla4xxx_get_dhcp_ip_address(struct scsi_qla_host * ha)
 459 {
 460         struct addr_ctrl_blk *init_fw_cb;
 461         dma_addr_t init_fw_cb_dma;
 462         uint32_t mbox_cmd[MBOX_REG_COUNT];
 463         uint32_t mbox_sts[MBOX_REG_COUNT];
 464
 465         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
 466                                         sizeof(struct addr_ctrl_blk),
 467                                         &init_fw_cb_dma, GFP_KERNEL);
 468         if (init_fw_cb == NULL) {
 469                 printk("scsi%ld: %s: Unable to alloc init_cb\n", ha->host_no,
 470                        __func__);
 471                 return QLA_ERROR;
 472         }
 473
 474         /* Get Initialize Firmware Control Block. */
 475         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
 476         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma) !=
 477             QLA_SUCCESS) {
 478                 DEBUG2(printk("scsi%ld: %s: Failed to get init_fw_ctrl_blk\n",
 479                               ha->host_no, __func__));
 480                 dma_free_coherent(&ha->pdev->dev,
 481                                   sizeof(struct addr_ctrl_blk),
 482                                   init_fw_cb, init_fw_cb_dma);
 483                 return QLA_ERROR;
 484         }
 485
 486         /* Save IP Address. */
 487         qla4xxx_update_local_ip(ha, init_fw_cb);
 488         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
 489                                 init_fw_cb, init_fw_cb_dma);
 490
 491         return QLA_SUCCESS;
 492 }
 493
 494 /**
 495  * qla4xxx_get_firmware_state - gets firmware state of HBA
 496  * @ha: Pointer to host adapter structure.
 497  **/
 498 int qla4xxx_get_firmware_state(struct scsi_qla_host * ha)
 499 {
 500         uint32_t mbox_cmd[MBOX_REG_COUNT];
 501         uint32_t mbox_sts[MBOX_REG_COUNT];
 502
 503         /* Get firmware version */
 504         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 505         memset(&mbox_sts, 0, sizeof(mbox_sts));
 506
 507         mbox_cmd[0] = MBOX_CMD_GET_FW_STATE;
 508
 509         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 4, &mbox_cmd[0], &mbox_sts[0]) !=
 510             QLA_SUCCESS) {
 511                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATE failed w/ "
 512                               "status %04X\n", ha->host_no, __func__,
 513                               mbox_sts[0]));
 514                 return QLA_ERROR;
 515         }
 516         ha->firmware_state = mbox_sts[1];
 517         ha->board_id = mbox_sts[2];
 518         ha->addl_fw_state = mbox_sts[3];
 519         DEBUG2(printk("scsi%ld: %s firmware_state=0x%x\n",
 520                       ha->host_no, __func__, ha->firmware_state);)
 521
 522         return QLA_SUCCESS;
 523 }
 524
 525 /**
 526  * qla4xxx_get_firmware_status - retrieves firmware status
 527  * @ha: Pointer to host adapter structure.
 528  **/
 529 int qla4xxx_get_firmware_status(struct scsi_qla_host * ha)
 530 {
 531         uint32_t mbox_cmd[MBOX_REG_COUNT];
 532         uint32_t mbox_sts[MBOX_REG_COUNT];
 533
 534         /* Get firmware version */
 535         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 536         memset(&mbox_sts, 0, sizeof(mbox_sts));
 537
 538         mbox_cmd[0] = MBOX_CMD_GET_FW_STATUS;
 539
 540         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 3, &mbox_cmd[0], &mbox_sts[0]) !=
 541             QLA_SUCCESS) {
 542                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATUS failed w/ "
 543                               "status %04X\n", ha->host_no, __func__,
 544                               mbox_sts[0]));
 545                 return QLA_ERROR;
 546         }
 547
 548         ql4_printk(KERN_INFO, ha, "%ld firmare IOCBs available (%d).\n",
 549             ha->host_no, mbox_cmd[2]);
 550
 551         return QLA_SUCCESS;
 552 }
 553
 554 /**
 555  * qla4xxx_get_fwddb_entry - retrieves firmware ddb entry
 556  * @ha: Pointer to host adapter structure.
 557  * @fw_ddb_index: Firmware's device database index
 558  * @fw_ddb_entry: Pointer to firmware's device database entry structure
 559  * @num_valid_ddb_entries: Pointer to number of valid ddb entries
 560  * @next_ddb_index: Pointer to next valid device database index
 561  * @fw_ddb_device_state: Pointer to device state
 562  **/
 563 int qla4xxx_get_fwddb_entry(struct scsi_qla_host *ha,
 564                             uint16_t fw_ddb_index,
 565                             struct dev_db_entry *fw_ddb_entry,
 566                             dma_addr_t fw_ddb_entry_dma,
 567                             uint32_t *num_valid_ddb_entries,
 568                             uint32_t *next_ddb_index,
 569                             uint32_t *fw_ddb_device_state,
 570                             uint32_t *conn_err_detail,
 571                             uint16_t *tcp_source_port_num,
 572                             uint16_t *connection_id)
 573 {
 574         int status = QLA_ERROR;
 575         uint16_t options;
 576         uint32_t mbox_cmd[MBOX_REG_COUNT];
 577         uint32_t mbox_sts[MBOX_REG_COUNT];
 578
 579         /* Make sure the device index is valid */
 580         if (fw_ddb_index >= MAX_DDB_ENTRIES) {
 581                 DEBUG2(printk("scsi%ld: %s: ddb [%d] out of range.\n",
 582                               ha->host_no, __func__, fw_ddb_index));
 583                 goto exit_get_fwddb;
 584         }
 585         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 586         memset(&mbox_sts, 0, sizeof(mbox_sts));
 587
 588         mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY;
 589         mbox_cmd[1] = (uint32_t) fw_ddb_index;
 590         mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
 591         mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
 592         mbox_cmd[4] = sizeof(struct dev_db_entry);
 593
 594         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 7, &mbox_cmd[0], &mbox_sts[0]) ==
 595             QLA_ERROR) {
 596                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_DATABASE_ENTRY failed"
 597                               " with status 0x%04X\n", ha->host_no, __func__,
 598                               mbox_sts[0]));
 599                 goto exit_get_fwddb;
 600         }
 601         if (fw_ddb_index != mbox_sts[1]) {
 602                 DEBUG2(printk("scsi%ld: %s: ddb mismatch [%d] != [%d].\n",
 603                               ha->host_no, __func__, fw_ddb_index,
 604                               mbox_sts[1]));
 605                 goto exit_get_fwddb;
 606         }
 607         if (fw_ddb_entry) {
 608                 options = le16_to_cpu(fw_ddb_entry->options);
 609                 if (options & DDB_OPT_IPV6_DEVICE) {
 610                         ql4_printk(KERN_INFO, ha, "%s: DDB[%d] MB0 %04x Tot %d "
 611                                 "Next %d State %04x ConnErr %08x %pI6 "
 612                                 ":%04d \"%s\"\n", __func__, fw_ddb_index,
 613                                 mbox_sts[0], mbox_sts[2], mbox_sts[3],
 614                                 mbox_sts[4], mbox_sts[5],
 615                                 fw_ddb_entry->ip_addr,
 616                                 le16_to_cpu(fw_ddb_entry->port),
 617                                 fw_ddb_entry->iscsi_name);
 618                 } else {
 619                         ql4_printk(KERN_INFO, ha, "%s: DDB[%d] MB0 %04x Tot %d "
 620                                 "Next %d State %04x ConnErr %08x %pI4 "
 621                                 ":%04d \"%s\"\n", __func__, fw_ddb_index,
 622                                 mbox_sts[0], mbox_sts[2], mbox_sts[3],
 623                                 mbox_sts[4], mbox_sts[5],
 624                                 fw_ddb_entry->ip_addr,
 625                                 le16_to_cpu(fw_ddb_entry->port),
 626                                 fw_ddb_entry->iscsi_name);
 627                 }
 628         }
 629         if (num_valid_ddb_entries)
 630                 *num_valid_ddb_entries = mbox_sts[2];
 631         if (next_ddb_index)
 632                 *next_ddb_index = mbox_sts[3];
 633         if (fw_ddb_device_state)
 634                 *fw_ddb_device_state = mbox_sts[4];
 635
 636         /*
 637          * RA: This mailbox has been changed to pass connection error and
 638          * details.  Its true for ISP4010 as per Version E - Not sure when it
 639          * was changed.  Get the time2wait from the fw_dd_entry field :
 640          * default_time2wait which we call it as minTime2Wait DEV_DB_ENTRY
 641          * struct.
 642          */
 643         if (conn_err_detail)
 644                 *conn_err_detail = mbox_sts[5];
 645         if (tcp_source_port_num)
 646                 *tcp_source_port_num = (uint16_t) (mbox_sts[6] >> 16);
 647         if (connection_id)
 648                 *connection_id = (uint16_t) mbox_sts[6] & 0x00FF;
 649         status = QLA_SUCCESS;
 650
 651 exit_get_fwddb:
 652         return status;
 653 }
 654
 655 /**
 656  * qla4xxx_set_fwddb_entry - sets a ddb entry.
 657  * @ha: Pointer to host adapter structure.
 658  * @fw_ddb_index: Firmware's device database index
 659  * @fw_ddb_entry: Pointer to firmware's ddb entry structure, or NULL.
 660  *
 661  * This routine initializes or updates the adapter's device database
 662  * entry for the specified device. It also triggers a login for the
 663  * specified device. Therefore, it may also be used as a secondary
 664  * login routine when a NULL pointer is specified for the fw_ddb_entry.
 665  **/
 666 int qla4xxx_set_ddb_entry(struct scsi_qla_host * ha, uint16_t fw_ddb_index,
 667                           dma_addr_t fw_ddb_entry_dma)
 668 {
 669         uint32_t mbox_cmd[MBOX_REG_COUNT];
 670         uint32_t mbox_sts[MBOX_REG_COUNT];
 671         int status;
 672
 673         /* Do not wait for completion. The firmware will send us an
 674          * ASTS_DATABASE_CHANGED (0x8014) to notify us of the login status.
 675          */
 676         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 677         memset(&mbox_sts, 0, sizeof(mbox_sts));
 678
 679         mbox_cmd[0] = MBOX_CMD_SET_DATABASE_ENTRY;
 680         mbox_cmd[1] = (uint32_t) fw_ddb_index;
 681         mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
 682         mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
 683         mbox_cmd[4] = sizeof(struct dev_db_entry);
 684
 685         status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0],
 686             &mbox_sts[0]);
 687         DEBUG2(printk("scsi%ld: %s: status=%d mbx0=0x%x mbx4=0x%x\n",
 688             ha->host_no, __func__, status, mbox_sts[0], mbox_sts[4]);)
 689
 690         return status;
 691 }
 692
 693 /**
 694  * qla4xxx_get_crash_record - retrieves crash record.
 695  * @ha: Pointer to host adapter structure.
 696  *
 697  * This routine retrieves a crash record from the QLA4010 after an 8002h aen.
 698  **/
 699 void qla4xxx_get_crash_record(struct scsi_qla_host * ha)
 700 {
 701         uint32_t mbox_cmd[MBOX_REG_COUNT];
 702         uint32_t mbox_sts[MBOX_REG_COUNT];
 703         struct crash_record *crash_record = NULL;
 704         dma_addr_t crash_record_dma = 0;
 705         uint32_t crash_record_size = 0;
 706
 707         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 708         memset(&mbox_sts, 0, sizeof(mbox_cmd));
 709
 710         /* Get size of crash record. */
 711         mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
 712
 713         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 714             QLA_SUCCESS) {
 715                 DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve size!\n",
 716                               ha->host_no, __func__));
 717                 goto exit_get_crash_record;
 718         }
 719         crash_record_size = mbox_sts[4];
 720         if (crash_record_size == 0) {
 721                 DEBUG2(printk("scsi%ld: %s: ERROR: Crash record size is 0!\n",
 722                               ha->host_no, __func__));
 723                 goto exit_get_crash_record;
 724         }
 725
 726         /* Alloc Memory for Crash Record. */
 727         crash_record = dma_alloc_coherent(&ha->pdev->dev, crash_record_size,
 728                                           &crash_record_dma, GFP_KERNEL);
 729         if (crash_record == NULL)
 730                 goto exit_get_crash_record;
 731
 732         /* Get Crash Record. */
 733         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 734         memset(&mbox_sts, 0, sizeof(mbox_cmd));
 735
 736         mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
 737         mbox_cmd[2] = LSDW(crash_record_dma);
 738         mbox_cmd[3] = MSDW(crash_record_dma);
 739         mbox_cmd[4] = crash_record_size;
 740
 741         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 742             QLA_SUCCESS)
 743                 goto exit_get_crash_record;
 744
 745         /* Dump Crash Record. */
 746
 747 exit_get_crash_record:
 748         if (crash_record)
 749                 dma_free_coherent(&ha->pdev->dev, crash_record_size,
 750                                   crash_record, crash_record_dma);
 751 }
 752
 753 /**
 754  * qla4xxx_get_conn_event_log - retrieves connection event log
 755  * @ha: Pointer to host adapter structure.
 756  **/
 757 void qla4xxx_get_conn_event_log(struct scsi_qla_host * ha)
 758 {
 759         uint32_t mbox_cmd[MBOX_REG_COUNT];
 760         uint32_t mbox_sts[MBOX_REG_COUNT];
 761         struct conn_event_log_entry *event_log = NULL;
 762         dma_addr_t event_log_dma = 0;
 763         uint32_t event_log_size = 0;
 764         uint32_t num_valid_entries;
 765         uint32_t      oldest_entry = 0;
 766         uint32_t        max_event_log_entries;
 767         uint8_t         i;
 768
 769
 770         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 771         memset(&mbox_sts, 0, sizeof(mbox_cmd));
 772
 773         /* Get size of crash record. */
 774         mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
 775
 776         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 777             QLA_SUCCESS)
 778                 goto exit_get_event_log;
 779
 780         event_log_size = mbox_sts[4];
 781         if (event_log_size == 0)
 782                 goto exit_get_event_log;
 783
 784         /* Alloc Memory for Crash Record. */
 785         event_log = dma_alloc_coherent(&ha->pdev->dev, event_log_size,
 786                                        &event_log_dma, GFP_KERNEL);
 787         if (event_log == NULL)
 788                 goto exit_get_event_log;
 789
 790         /* Get Crash Record. */
 791         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 792         memset(&mbox_sts, 0, sizeof(mbox_cmd));
 793
 794         mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
 795         mbox_cmd[2] = LSDW(event_log_dma);
 796         mbox_cmd[3] = MSDW(event_log_dma);
 797
 798         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 799             QLA_SUCCESS) {
 800                 DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve event "
 801                               "log!\n", ha->host_no, __func__));
 802                 goto exit_get_event_log;
 803         }
 804
 805         /* Dump Event Log. */
 806         num_valid_entries = mbox_sts[1];
 807
 808         max_event_log_entries = event_log_size /
 809                 sizeof(struct conn_event_log_entry);
 810
 811         if (num_valid_entries > max_event_log_entries)
 812                 oldest_entry = num_valid_entries % max_event_log_entries;
 813
 814         DEBUG3(printk("scsi%ld: Connection Event Log Dump (%d entries):\n",
 815                       ha->host_no, num_valid_entries));
 816
 817         if (ql4xextended_error_logging == 3) {
 818                 if (oldest_entry == 0) {
 819                         /* Circular Buffer has not wrapped around */
 820                         for (i=0; i < num_valid_entries; i++) {
 821                                 qla4xxx_dump_buffer((uint8_t *)event_log+
 822                                                     (i*sizeof(*event_log)),
 823                                                     sizeof(*event_log));
 824                         }
 825                 }
 826                 else {
 827                         /* Circular Buffer has wrapped around -
 828                          * display accordingly*/
 829                         for (i=oldest_entry; i < max_event_log_entries; i++) {
 830                                 qla4xxx_dump_buffer((uint8_t *)event_log+
 831                                                     (i*sizeof(*event_log)),
 832                                                     sizeof(*event_log));
 833                         }
 834                         for (i=0; i < oldest_entry; i++) {
 835                                 qla4xxx_dump_buffer((uint8_t *)event_log+
 836                                                     (i*sizeof(*event_log)),
 837                                                     sizeof(*event_log));
 838                         }
 839                 }
 840         }
 841
 842 exit_get_event_log:
 843         if (event_log)
 844                 dma_free_coherent(&ha->pdev->dev, event_log_size, event_log,
 845                                   event_log_dma);
 846 }
 847
 848 /**
 849  * qla4xxx_abort_task - issues Abort Task
 850  * @ha: Pointer to host adapter structure.
 851  * @srb: Pointer to srb entry
 852  *
 853  * This routine performs a LUN RESET on the specified target/lun.
 854  * The caller must ensure that the ddb_entry and lun_entry pointers
 855  * are valid before calling this routine.
 856  **/
 857 int qla4xxx_abort_task(struct scsi_qla_host *ha, struct srb *srb)
 858 {
 859         uint32_t mbox_cmd[MBOX_REG_COUNT];
 860         uint32_t mbox_sts[MBOX_REG_COUNT];
 861         struct scsi_cmnd *cmd = srb->cmd;
 862         int status = QLA_SUCCESS;
 863         unsigned long flags = 0;
 864         uint32_t index;
 865
 866         /*
 867          * Send abort task command to ISP, so that the ISP will return
 868          * request with ABORT status
 869          */
 870         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 871         memset(&mbox_sts, 0, sizeof(mbox_sts));
 872
 873         spin_lock_irqsave(&ha->hardware_lock, flags);
 874         index = (unsigned long)(unsigned char *)cmd->host_scribble;
 875         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 876
 877         /* Firmware already posted completion on response queue */
 878         if (index == MAX_SRBS)
 879                 return status;
 880
 881         mbox_cmd[0] = MBOX_CMD_ABORT_TASK;
 882         mbox_cmd[1] = srb->fw_ddb_index;
 883         mbox_cmd[2] = index;
 884         /* Immediate Command Enable */
 885         mbox_cmd[5] = 0x01;
 886
 887         qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0],
 888             &mbox_sts[0]);
 889         if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE) {
 890                 status = QLA_ERROR;
 891
 892                 DEBUG2(printk(KERN_WARNING "scsi%ld:%d:%d: abort task FAILED: "
 893                     "mbx0=%04X, mb1=%04X, mb2=%04X, mb3=%04X, mb4=%04X\n",
 894                     ha->host_no, cmd->device->id, cmd->device->lun, mbox_sts[0],
 895                     mbox_sts[1], mbox_sts[2], mbox_sts[3], mbox_sts[4]));
 896         }
 897
 898         return status;
 899 }
 900
 901 /**
 902  * qla4xxx_reset_lun - issues LUN Reset
 903  * @ha: Pointer to host adapter structure.
 904  * @ddb_entry: Pointer to device database entry
 905  * @lun: lun number
 906  *
 907  * This routine performs a LUN RESET on the specified target/lun.
 908  * The caller must ensure that the ddb_entry and lun_entry pointers
 909  * are valid before calling this routine.
 910  **/
 911 int qla4xxx_reset_lun(struct scsi_qla_host * ha, struct ddb_entry * ddb_entry,
 912                       int lun)
 913 {
 914         uint32_t mbox_cmd[MBOX_REG_COUNT];
 915         uint32_t mbox_sts[MBOX_REG_COUNT];
 916         int status = QLA_SUCCESS;
 917
 918         DEBUG2(printk("scsi%ld:%d:%d: lun reset issued\n", ha->host_no,
 919                       ddb_entry->fw_ddb_index, lun));
 920
 921         /*
 922          * Send lun reset command to ISP, so that the ISP will return all
 923          * outstanding requests with RESET status
 924          */
 925         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 926         memset(&mbox_sts, 0, sizeof(mbox_sts));
 927
 928         mbox_cmd[0] = MBOX_CMD_LUN_RESET;
 929         mbox_cmd[1] = ddb_entry->fw_ddb_index;
 930         mbox_cmd[2] = lun << 8;
 931         mbox_cmd[5] = 0x01;     /* Immediate Command Enable */
 932
 933         qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], &mbox_sts[0]);
 934         if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
 935             mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
 936                 status = QLA_ERROR;
 937
 938         return status;
 939 }
 940
 941 /**
 942  * qla4xxx_reset_target - issues target Reset
 943  * @ha: Pointer to host adapter structure.
 944  * @db_entry: Pointer to device database entry
 945  * @un_entry: Pointer to lun entry structure
 946  *
 947  * This routine performs a TARGET RESET on the specified target.
 948  * The caller must ensure that the ddb_entry pointers
 949  * are valid before calling this routine.
 950  **/
 951 int qla4xxx_reset_target(struct scsi_qla_host *ha,
 952                          struct ddb_entry *ddb_entry)
 953 {
 954         uint32_t mbox_cmd[MBOX_REG_COUNT];
 955         uint32_t mbox_sts[MBOX_REG_COUNT];
 956         int status = QLA_SUCCESS;
 957
 958         DEBUG2(printk("scsi%ld:%d: target reset issued\n", ha->host_no,
 959                       ddb_entry->fw_ddb_index));
 960
 961         /*
 962          * Send target reset command to ISP, so that the ISP will return all
 963          * outstanding requests with RESET status
 964          */
 965         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 966         memset(&mbox_sts, 0, sizeof(mbox_sts));
 967
 968         mbox_cmd[0] = MBOX_CMD_TARGET_WARM_RESET;
 969         mbox_cmd[1] = ddb_entry->fw_ddb_index;
 970         mbox_cmd[5] = 0x01;     /* Immediate Command Enable */
 971
 972         qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0],
 973                                 &mbox_sts[0]);
 974         if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
 975             mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
 976                 status = QLA_ERROR;
 977
 978         return status;
 979 }
 980
 981 int qla4xxx_get_flash(struct scsi_qla_host * ha, dma_addr_t dma_addr,
 982                       uint32_t offset, uint32_t len)
 983 {
 984         uint32_t mbox_cmd[MBOX_REG_COUNT];
 985         uint32_t mbox_sts[MBOX_REG_COUNT];
 986
 987         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 988         memset(&mbox_sts, 0, sizeof(mbox_sts));
 989
 990         mbox_cmd[0] = MBOX_CMD_READ_FLASH;
 991         mbox_cmd[1] = LSDW(dma_addr);
 992         mbox_cmd[2] = MSDW(dma_addr);
 993         mbox_cmd[3] = offset;
 994         mbox_cmd[4] = len;
 995
 996         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 2, &mbox_cmd[0], &mbox_sts[0]) !=
 997             QLA_SUCCESS) {
 998                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_READ_FLASH, failed w/ "
 999                     "status %04X %04X, offset %08x, len %08x\n", ha->host_no,
1000                     __func__, mbox_sts[0], mbox_sts[1], offset, len));
1001                 return QLA_ERROR;
1002         }
1003         return QLA_SUCCESS;
1004 }
1005
1006 /**
1007  * qla4xxx_get_fw_version - gets firmware version
1008  * @ha: Pointer to host adapter structure.
1009  *
1010  * Retrieves the firmware version on HBA. In QLA4010, mailboxes 2 & 3 may
1011  * hold an address for data.  Make sure that we write 0 to those mailboxes,
1012  * if unused.
1013  **/
1014 int qla4xxx_get_fw_version(struct scsi_qla_host * ha)
1015 {
1016         uint32_t mbox_cmd[MBOX_REG_COUNT];
1017         uint32_t mbox_sts[MBOX_REG_COUNT];
1018
1019         /* Get firmware version. */
1020         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1021         memset(&mbox_sts, 0, sizeof(mbox_sts));
1022
1023         mbox_cmd[0] = MBOX_CMD_ABOUT_FW;
1024
1025         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
1026             QLA_SUCCESS) {
1027                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_ABOUT_FW failed w/ "
1028                     "status %04X\n", ha->host_no, __func__, mbox_sts[0]));
1029                 return QLA_ERROR;
1030         }
1031
1032         /* Save firmware version information. */
1033         ha->firmware_version[0] = mbox_sts[1];
1034         ha->firmware_version[1] = mbox_sts[2];
1035         ha->patch_number = mbox_sts[3];
1036         ha->build_number = mbox_sts[4];
1037
1038         return QLA_SUCCESS;
1039 }
1040
1041 static int qla4xxx_get_default_ddb(struct scsi_qla_host *ha,
1042                                    dma_addr_t dma_addr)
1043 {
1044         uint32_t mbox_cmd[MBOX_REG_COUNT];
1045         uint32_t mbox_sts[MBOX_REG_COUNT];
1046
1047         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1048         memset(&mbox_sts, 0, sizeof(mbox_sts));
1049
1050         mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY_DEFAULTS;
1051         mbox_cmd[2] = LSDW(dma_addr);
1052         mbox_cmd[3] = MSDW(dma_addr);
1053
1054         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], &mbox_sts[0]) !=
1055             QLA_SUCCESS) {
1056                 DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
1057                      ha->host_no, __func__, mbox_sts[0]));
1058                 return QLA_ERROR;
1059         }
1060         return QLA_SUCCESS;
1061 }
1062
1063 static int qla4xxx_req_ddb_entry(struct scsi_qla_host *ha, uint32_t *ddb_index)
1064 {
1065         uint32_t mbox_cmd[MBOX_REG_COUNT];
1066         uint32_t mbox_sts[MBOX_REG_COUNT];
1067
1068         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1069         memset(&mbox_sts, 0, sizeof(mbox_sts));
1070
1071         mbox_cmd[0] = MBOX_CMD_REQUEST_DATABASE_ENTRY;
1072         mbox_cmd[1] = MAX_PRST_DEV_DB_ENTRIES;
1073
1074         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 3, &mbox_cmd[0], &mbox_sts[0]) !=
1075             QLA_SUCCESS) {
1076                 if (mbox_sts[0] == MBOX_STS_COMMAND_ERROR) {
1077                         *ddb_index = mbox_sts[2];
1078                 } else {
1079                         DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
1080                              ha->host_no, __func__, mbox_sts[0]));
1081                         return QLA_ERROR;
1082                 }
1083         } else {
1084                 *ddb_index = MAX_PRST_DEV_DB_ENTRIES;
1085         }
1086
1087         return QLA_SUCCESS;
1088 }
1089
1090
1091 int qla4xxx_send_tgts(struct scsi_qla_host *ha, char *ip, uint16_t port)
1092 {
1093         struct dev_db_entry *fw_ddb_entry;
1094         dma_addr_t fw_ddb_entry_dma;
1095         uint32_t ddb_index;
1096         int ret_val = QLA_SUCCESS;
1097
1098
1099         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
1100                                           sizeof(*fw_ddb_entry),
1101                                           &fw_ddb_entry_dma, GFP_KERNEL);
1102         if (!fw_ddb_entry) {
1103                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
1104                               ha->host_no, __func__));
1105                 ret_val = QLA_ERROR;
1106                 goto exit_send_tgts_no_free;
1107         }
1108
1109         ret_val = qla4xxx_get_default_ddb(ha, fw_ddb_entry_dma);
1110         if (ret_val != QLA_SUCCESS)
1111                 goto exit_send_tgts;
1112
1113         ret_val = qla4xxx_req_ddb_entry(ha, &ddb_index);
1114         if (ret_val != QLA_SUCCESS)
1115                 goto exit_send_tgts;
1116
1117         memset(fw_ddb_entry->iscsi_alias, 0,
1118                sizeof(fw_ddb_entry->iscsi_alias));
1119
1120         memset(fw_ddb_entry->iscsi_name, 0,
1121                sizeof(fw_ddb_entry->iscsi_name));
1122
1123         memset(fw_ddb_entry->ip_addr, 0, sizeof(fw_ddb_entry->ip_addr));
1124         memset(fw_ddb_entry->tgt_addr, 0,
1125                sizeof(fw_ddb_entry->tgt_addr));
1126
1127         fw_ddb_entry->options = (DDB_OPT_DISC_SESSION | DDB_OPT_TARGET);
1128         fw_ddb_entry->port = cpu_to_le16(ntohs(port));
1129
1130         fw_ddb_entry->ip_addr[0] = *ip;
1131         fw_ddb_entry->ip_addr[1] = *(ip + 1);
1132         fw_ddb_entry->ip_addr[2] = *(ip + 2);
1133         fw_ddb_entry->ip_addr[3] = *(ip + 3);
1134
1135         ret_val = qla4xxx_set_ddb_entry(ha, ddb_index, fw_ddb_entry_dma);
1136
1137 exit_send_tgts:
1138         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1139                           fw_ddb_entry, fw_ddb_entry_dma);
1140 exit_send_tgts_no_free:
1141         return ret_val;
1142 }
1143