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
  43         if (is_qla8022(ha) &&
  44             test_bit(AF_FW_RECOVERY, &ha->flags)) {
  45                 DEBUG2(ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: prematurely "
  46                     "completing mbx cmd as firmware recovery detected\n",
  47                     ha->host_no, __func__));
  48                 return status;
  49         }
  50
  51         if ((is_aer_supported(ha)) &&
  52             (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))) {
  53                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Perm failure on EEH, "
  54                     "timeout MBX Exiting.\n", ha->host_no, __func__));
  55                 return status;
  56         }
  57
  58         /* Mailbox code active */
  59         wait_count = MBOX_TOV * 100;
  60
  61         while (wait_count--) {
  62                 mutex_lock(&ha->mbox_sem);
  63                 if (!test_bit(AF_MBOX_COMMAND, &ha->flags)) {
  64                         set_bit(AF_MBOX_COMMAND, &ha->flags);
  65                         mutex_unlock(&ha->mbox_sem);
  66                         break;
  67                 }
  68                 mutex_unlock(&ha->mbox_sem);
  69                 if (!wait_count) {
  70                         DEBUG2(printk("scsi%ld: %s: mbox_sem failed\n",
  71                                 ha->host_no, __func__));
  72                         return status;
  73                 }
  74                 msleep(10);
  75         }
  76
  77         /* To prevent overwriting mailbox registers for a command that has
  78          * not yet been serviced, check to see if an active command
  79          * (AEN, IOCB, etc.) is interrupting, then service it.
  80          * -----------------------------------------------------------------
  81          */
  82         spin_lock_irqsave(&ha->hardware_lock, flags);
  83
  84         if (is_qla8022(ha)) {
  85                 intr_status = readl(&ha->qla4_8xxx_reg->host_int);
  86                 if (intr_status & ISRX_82XX_RISC_INT) {
  87                         /* Service existing interrupt */
  88                         DEBUG2(printk("scsi%ld: %s: "
  89                             "servicing existing interrupt\n",
  90                             ha->host_no, __func__));
  91                         intr_status = readl(&ha->qla4_8xxx_reg->host_status);
  92                         ha->isp_ops->interrupt_service_routine(ha, intr_status);
  93                         clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
  94                         if (test_bit(AF_INTERRUPTS_ON, &ha->flags) &&
  95                             test_bit(AF_INTx_ENABLED, &ha->flags))
  96                                 qla4_8xxx_wr_32(ha,
  97                                     ha->nx_legacy_intr.tgt_mask_reg,
  98                                     0xfbff);
  99                 }
 100         } else {
 101                 intr_status = readl(&ha->reg->ctrl_status);
 102                 if (intr_status & CSR_SCSI_PROCESSOR_INTR) {
 103                         /* Service existing interrupt */
 104                         ha->isp_ops->interrupt_service_routine(ha, intr_status);
 105                         clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
 106                 }
 107         }
 108
 109         ha->mbox_status_count = outCount;
 110         for (i = 0; i < outCount; i++)
 111                 ha->mbox_status[i] = 0;
 112
 113         if (is_qla8022(ha)) {
 114                 /* Load all mailbox registers, except mailbox 0. */
 115                 DEBUG5(
 116                     printk("scsi%ld: %s: Cmd ", ha->host_no, __func__);
 117                     for (i = 0; i < inCount; i++)
 118                         printk("mb%d=%04x ", i, mbx_cmd[i]);
 119                     printk("\n"));
 120
 121                 for (i = 1; i < inCount; i++)
 122                         writel(mbx_cmd[i], &ha->qla4_8xxx_reg->mailbox_in[i]);
 123                 writel(mbx_cmd[0], &ha->qla4_8xxx_reg->mailbox_in[0]);
 124                 readl(&ha->qla4_8xxx_reg->mailbox_in[0]);
 125                 writel(HINT_MBX_INT_PENDING, &ha->qla4_8xxx_reg->hint);
 126         } else {
 127                 /* Load all mailbox registers, except mailbox 0. */
 128                 for (i = 1; i < inCount; i++)
 129                         writel(mbx_cmd[i], &ha->reg->mailbox[i]);
 130
 131                 /* Wakeup firmware  */
 132                 writel(mbx_cmd[0], &ha->reg->mailbox[0]);
 133                 readl(&ha->reg->mailbox[0]);
 134                 writel(set_rmask(CSR_INTR_RISC), &ha->reg->ctrl_status);
 135                 readl(&ha->reg->ctrl_status);
 136         }
 137
 138         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 139
 140         /* Wait for completion */
 141
 142         /*
 143          * If we don't want status, don't wait for the mailbox command to
 144          * complete.  For example, MBOX_CMD_RESET_FW doesn't return status,
 145          * you must poll the inbound Interrupt Mask for completion.
 146          */
 147         if (outCount == 0) {
 148                 status = QLA_SUCCESS;
 149                 goto mbox_exit;
 150         }
 151
 152         /*
 153          * Wait for completion: Poll or completion queue
 154          */
 155         if (test_bit(AF_IRQ_ATTACHED, &ha->flags) &&
 156             test_bit(AF_INTERRUPTS_ON, &ha->flags) &&
 157             test_bit(AF_ONLINE, &ha->flags) &&
 158             !test_bit(AF_HBA_GOING_AWAY, &ha->flags)) {
 159                 /* Do not poll for completion. Use completion queue */
 160                 set_bit(AF_MBOX_COMMAND_NOPOLL, &ha->flags);
 161                 wait_for_completion_timeout(&ha->mbx_intr_comp, MBOX_TOV * HZ);
 162                 clear_bit(AF_MBOX_COMMAND_NOPOLL, &ha->flags);
 163         } else {
 164                 /* Poll for command to complete */
 165                 wait_count = jiffies + MBOX_TOV * HZ;
 166                 while (test_bit(AF_MBOX_COMMAND_DONE, &ha->flags) == 0) {
 167                         if (time_after_eq(jiffies, wait_count))
 168                                 break;
 169
 170                         /*
 171                          * Service the interrupt.
 172                          * The ISR will save the mailbox status registers
 173                          * to a temporary storage location in the adapter
 174                          * structure.
 175                          */
 176
 177                         spin_lock_irqsave(&ha->hardware_lock, flags);
 178                         if (is_qla8022(ha)) {
 179                                 intr_status =
 180                                     readl(&ha->qla4_8xxx_reg->host_int);
 181                                 if (intr_status & ISRX_82XX_RISC_INT) {
 182                                         ha->mbox_status_count = outCount;
 183                                         intr_status =
 184                                          readl(&ha->qla4_8xxx_reg->host_status);
 185                                         ha->isp_ops->interrupt_service_routine(
 186                                             ha, intr_status);
 187                                         if (test_bit(AF_INTERRUPTS_ON,
 188                                             &ha->flags) &&
 189                                             test_bit(AF_INTx_ENABLED,
 190                                             &ha->flags))
 191                                                 qla4_8xxx_wr_32(ha,
 192                                                 ha->nx_legacy_intr.tgt_mask_reg,
 193                                                 0xfbff);
 194                                 }
 195                         } else {
 196                                 intr_status = readl(&ha->reg->ctrl_status);
 197                                 if (intr_status & INTR_PENDING) {
 198                                         /*
 199                                          * Service the interrupt.
 200                                          * The ISR will save the mailbox status
 201                                          * registers to a temporary storage
 202                                          * location in the adapter structure.
 203                                          */
 204                                         ha->mbox_status_count = outCount;
 205                                         ha->isp_ops->interrupt_service_routine(
 206                                             ha, intr_status);
 207                                 }
 208                         }
 209                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 210                         msleep(10);
 211                 }
 212         }
 213
 214         /* Check for mailbox timeout. */
 215         if (!test_bit(AF_MBOX_COMMAND_DONE, &ha->flags)) {
 216                 if (is_qla8022(ha) &&
 217                     test_bit(AF_FW_RECOVERY, &ha->flags)) {
 218                         DEBUG2(ql4_printk(KERN_INFO, ha,
 219                             "scsi%ld: %s: prematurely completing mbx cmd as "
 220                             "firmware recovery detected\n",
 221                             ha->host_no, __func__));
 222                         goto mbox_exit;
 223                 }
 224                 DEBUG2(printk("scsi%ld: Mailbox Cmd 0x%08X timed out ...,"
 225                               " Scheduling Adapter Reset\n", ha->host_no,
 226                               mbx_cmd[0]));
 227                 ha->mailbox_timeout_count++;
 228                 mbx_sts[0] = (-1);
 229                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
 230                 goto mbox_exit;
 231         }
 232
 233         /*
 234          * Copy the mailbox out registers to the caller's mailbox in/out
 235          * structure.
 236          */
 237         spin_lock_irqsave(&ha->hardware_lock, flags);
 238         for (i = 0; i < outCount; i++)
 239                 mbx_sts[i] = ha->mbox_status[i];
 240
 241         /* Set return status and error flags (if applicable). */
 242         switch (ha->mbox_status[0]) {
 243         case MBOX_STS_COMMAND_COMPLETE:
 244                 status = QLA_SUCCESS;
 245                 break;
 246
 247         case MBOX_STS_INTERMEDIATE_COMPLETION:
 248                 status = QLA_SUCCESS;
 249                 break;
 250
 251         case MBOX_STS_BUSY:
 252                 DEBUG2( printk("scsi%ld: %s: Cmd = %08X, ISP BUSY\n",
 253                                ha->host_no, __func__, mbx_cmd[0]));
 254                 ha->mailbox_timeout_count++;
 255                 break;
 256
 257         default:
 258                 DEBUG2(printk("scsi%ld: %s: **** FAILED, cmd = %08X, "
 259                               "sts = %08X ****\n", ha->host_no, __func__,
 260                               mbx_cmd[0], mbx_sts[0]));
 261                 break;
 262         }
 263         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 264
 265 mbox_exit:
 266         mutex_lock(&ha->mbox_sem);
 267         clear_bit(AF_MBOX_COMMAND, &ha->flags);
 268         mutex_unlock(&ha->mbox_sem);
 269         clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
 270
 271         return status;
 272 }
 273
 274 void qla4xxx_mailbox_premature_completion(struct scsi_qla_host *ha)
 275 {
 276         set_bit(AF_FW_RECOVERY, &ha->flags);
 277         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: set FW RECOVERY!\n",
 278             ha->host_no, __func__);
 279
 280         if (test_bit(AF_MBOX_COMMAND, &ha->flags)) {
 281                 if (test_bit(AF_MBOX_COMMAND_NOPOLL, &ha->flags)) {
 282                         complete(&ha->mbx_intr_comp);
 283                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Due to fw "
 284                             "recovery, doing premature completion of "
 285                             "mbx cmd\n", ha->host_no, __func__);
 286
 287                 } else {
 288                         set_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
 289                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Due to fw "
 290                             "recovery, doing premature completion of "
 291                             "polling mbx cmd\n", ha->host_no, __func__);
 292                 }
 293         }
 294 }
 295
 296 static uint8_t
 297 qla4xxx_set_ifcb(struct scsi_qla_host *ha, uint32_t *mbox_cmd,
 298                  uint32_t *mbox_sts, dma_addr_t init_fw_cb_dma)
 299 {
 300         memset(mbox_cmd, 0, sizeof(mbox_cmd[0]) * MBOX_REG_COUNT);
 301         memset(mbox_sts, 0, sizeof(mbox_sts[0]) * MBOX_REG_COUNT);
 302
 303         if (is_qla8022(ha))
 304                 qla4_8xxx_wr_32(ha, ha->nx_db_wr_ptr, 0);
 305
 306         mbox_cmd[0] = MBOX_CMD_INITIALIZE_FIRMWARE;
 307         mbox_cmd[1] = 0;
 308         mbox_cmd[2] = LSDW(init_fw_cb_dma);
 309         mbox_cmd[3] = MSDW(init_fw_cb_dma);
 310         mbox_cmd[4] = sizeof(struct addr_ctrl_blk);
 311         mbox_cmd[5] = (IFCB_VER_MAX << 8) | IFCB_VER_MIN;
 312
 313         if (qla4xxx_mailbox_command(ha, 6, 6, mbox_cmd, mbox_sts) !=
 314             QLA_SUCCESS) {
 315                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: "
 316                               "MBOX_CMD_INITIALIZE_FIRMWARE"
 317                               " failed w/ status %04X\n",
 318                               ha->host_no, __func__, mbox_sts[0]));
 319                 return QLA_ERROR;
 320         }
 321         return QLA_SUCCESS;
 322 }
 323
 324 static uint8_t
 325 qla4xxx_get_ifcb(struct scsi_qla_host *ha, uint32_t *mbox_cmd,
 326                  uint32_t *mbox_sts, dma_addr_t init_fw_cb_dma)
 327 {
 328         memset(mbox_cmd, 0, sizeof(mbox_cmd[0]) * MBOX_REG_COUNT);
 329         memset(mbox_sts, 0, sizeof(mbox_sts[0]) * MBOX_REG_COUNT);
 330         mbox_cmd[0] = MBOX_CMD_GET_INIT_FW_CTRL_BLOCK;
 331         mbox_cmd[2] = LSDW(init_fw_cb_dma);
 332         mbox_cmd[3] = MSDW(init_fw_cb_dma);
 333         mbox_cmd[4] = sizeof(struct addr_ctrl_blk);
 334
 335         if (qla4xxx_mailbox_command(ha, 5, 5, mbox_cmd, mbox_sts) !=
 336             QLA_SUCCESS) {
 337                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: "
 338                               "MBOX_CMD_GET_INIT_FW_CTRL_BLOCK"
 339                               " failed w/ status %04X\n",
 340                               ha->host_no, __func__, mbox_sts[0]));
 341                 return QLA_ERROR;
 342         }
 343         return QLA_SUCCESS;
 344 }
 345
 346 static void
 347 qla4xxx_update_local_ip(struct scsi_qla_host *ha,
 348                          struct addr_ctrl_blk  *init_fw_cb)
 349 {
 350         /* Save IPv4 Address Info */
 351         memcpy(ha->ip_address, init_fw_cb->ipv4_addr,
 352                 min(sizeof(ha->ip_address), sizeof(init_fw_cb->ipv4_addr)));
 353         memcpy(ha->subnet_mask, init_fw_cb->ipv4_subnet,
 354                 min(sizeof(ha->subnet_mask), sizeof(init_fw_cb->ipv4_subnet)));
 355         memcpy(ha->gateway, init_fw_cb->ipv4_gw_addr,
 356                 min(sizeof(ha->gateway), sizeof(init_fw_cb->ipv4_gw_addr)));
 357
 358         if (is_ipv6_enabled(ha)) {
 359                 /* Save IPv6 Address */
 360                 ha->ipv6_link_local_state = init_fw_cb->ipv6_lnk_lcl_addr_state;
 361                 ha->ipv6_addr0_state = init_fw_cb->ipv6_addr0_state;
 362                 ha->ipv6_addr1_state = init_fw_cb->ipv6_addr1_state;
 363                 ha->ipv6_default_router_state = init_fw_cb->ipv6_dflt_rtr_state;
 364                 ha->ipv6_link_local_addr.in6_u.u6_addr8[0] = 0xFE;
 365                 ha->ipv6_link_local_addr.in6_u.u6_addr8[1] = 0x80;
 366
 367                 memcpy(&ha->ipv6_link_local_addr.in6_u.u6_addr8[8],
 368                         init_fw_cb->ipv6_if_id,
 369                         min(sizeof(ha->ipv6_link_local_addr)/2,
 370                         sizeof(init_fw_cb->ipv6_if_id)));
 371                 memcpy(&ha->ipv6_addr0, init_fw_cb->ipv6_addr0,
 372                         min(sizeof(ha->ipv6_addr0),
 373                         sizeof(init_fw_cb->ipv6_addr0)));
 374                 memcpy(&ha->ipv6_addr1, init_fw_cb->ipv6_addr1,
 375                         min(sizeof(ha->ipv6_addr1),
 376                         sizeof(init_fw_cb->ipv6_addr1)));
 377                 memcpy(&ha->ipv6_default_router_addr,
 378                         init_fw_cb->ipv6_dflt_rtr_addr,
 379                         min(sizeof(ha->ipv6_default_router_addr),
 380                         sizeof(init_fw_cb->ipv6_dflt_rtr_addr)));
 381         }
 382 }
 383
 384 static uint8_t
 385 qla4xxx_update_local_ifcb(struct scsi_qla_host *ha,
 386                           uint32_t *mbox_cmd,
 387                           uint32_t *mbox_sts,
 388                           struct addr_ctrl_blk  *init_fw_cb,
 389                           dma_addr_t init_fw_cb_dma)
 390 {
 391         if (qla4xxx_get_ifcb(ha, mbox_cmd, mbox_sts, init_fw_cb_dma)
 392             != QLA_SUCCESS) {
 393                 DEBUG2(printk(KERN_WARNING
 394                               "scsi%ld: %s: Failed to get init_fw_ctrl_blk\n",
 395                               ha->host_no, __func__));
 396                 return QLA_ERROR;
 397         }
 398
 399         DEBUG2(qla4xxx_dump_buffer(init_fw_cb, sizeof(struct addr_ctrl_blk)));
 400
 401         /* Save some info in adapter structure. */
 402         ha->acb_version = init_fw_cb->acb_version;
 403         ha->firmware_options = le16_to_cpu(init_fw_cb->fw_options);
 404         ha->tcp_options = le16_to_cpu(init_fw_cb->ipv4_tcp_opts);
 405         ha->ipv4_options = le16_to_cpu(init_fw_cb->ipv4_ip_opts);
 406         ha->ipv4_addr_state = le16_to_cpu(init_fw_cb->ipv4_addr_state);
 407         ha->heartbeat_interval = init_fw_cb->hb_interval;
 408         memcpy(ha->name_string, init_fw_cb->iscsi_name,
 409                 min(sizeof(ha->name_string),
 410                 sizeof(init_fw_cb->iscsi_name)));
 411         /*memcpy(ha->alias, init_fw_cb->Alias,
 412                min(sizeof(ha->alias), sizeof(init_fw_cb->Alias)));*/
 413
 414         /* Save Command Line Paramater info */
 415         ha->discovery_wait = ql4xdiscoverywait;
 416
 417         if (ha->acb_version == ACB_SUPPORTED) {
 418                 ha->ipv6_options = init_fw_cb->ipv6_opts;
 419                 ha->ipv6_addl_options = init_fw_cb->ipv6_addtl_opts;
 420         }
 421         qla4xxx_update_local_ip(ha, init_fw_cb);
 422
 423         return QLA_SUCCESS;
 424 }
 425
 426 /**
 427  * qla4xxx_initialize_fw_cb - initializes firmware control block.
 428  * @ha: Pointer to host adapter structure.
 429  **/
 430 int qla4xxx_initialize_fw_cb(struct scsi_qla_host * ha)
 431 {
 432         struct addr_ctrl_blk *init_fw_cb;
 433         dma_addr_t init_fw_cb_dma;
 434         uint32_t mbox_cmd[MBOX_REG_COUNT];
 435         uint32_t mbox_sts[MBOX_REG_COUNT];
 436         int status = QLA_ERROR;
 437
 438         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
 439                                         sizeof(struct addr_ctrl_blk),
 440                                         &init_fw_cb_dma, GFP_KERNEL);
 441         if (init_fw_cb == NULL) {
 442                 DEBUG2(printk("scsi%ld: %s: Unable to alloc init_cb\n",
 443                               ha->host_no, __func__));
 444                 goto exit_init_fw_cb_no_free;
 445         }
 446         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
 447
 448         /* Get Initialize Firmware Control Block. */
 449         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 450         memset(&mbox_sts, 0, sizeof(mbox_sts));
 451
 452         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma) !=
 453             QLA_SUCCESS) {
 454                 dma_free_coherent(&ha->pdev->dev,
 455                                   sizeof(struct addr_ctrl_blk),
 456                                   init_fw_cb, init_fw_cb_dma);
 457                 goto exit_init_fw_cb;
 458         }
 459
 460         /* Initialize request and response queues. */
 461         qla4xxx_init_rings(ha);
 462
 463         /* Fill in the request and response queue information. */
 464         init_fw_cb->rqq_consumer_idx = cpu_to_le16(ha->request_out);
 465         init_fw_cb->compq_producer_idx = cpu_to_le16(ha->response_in);
 466         init_fw_cb->rqq_len = __constant_cpu_to_le16(REQUEST_QUEUE_DEPTH);
 467         init_fw_cb->compq_len = __constant_cpu_to_le16(RESPONSE_QUEUE_DEPTH);
 468         init_fw_cb->rqq_addr_lo = cpu_to_le32(LSDW(ha->request_dma));
 469         init_fw_cb->rqq_addr_hi = cpu_to_le32(MSDW(ha->request_dma));
 470         init_fw_cb->compq_addr_lo = cpu_to_le32(LSDW(ha->response_dma));
 471         init_fw_cb->compq_addr_hi = cpu_to_le32(MSDW(ha->response_dma));
 472         init_fw_cb->shdwreg_addr_lo = cpu_to_le32(LSDW(ha->shadow_regs_dma));
 473         init_fw_cb->shdwreg_addr_hi = cpu_to_le32(MSDW(ha->shadow_regs_dma));
 474
 475         /* Set up required options. */
 476         init_fw_cb->fw_options |=
 477                 __constant_cpu_to_le16(FWOPT_SESSION_MODE |
 478                                        FWOPT_INITIATOR_MODE);
 479
 480         if (is_qla8022(ha))
 481                 init_fw_cb->fw_options |=
 482                     __constant_cpu_to_le16(FWOPT_ENABLE_CRBDB);
 483
 484         init_fw_cb->fw_options &= __constant_cpu_to_le16(~FWOPT_TARGET_MODE);
 485
 486         if (qla4xxx_set_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)
 487                 != QLA_SUCCESS) {
 488                 DEBUG2(printk(KERN_WARNING
 489                               "scsi%ld: %s: Failed to set init_fw_ctrl_blk\n",
 490                               ha->host_no, __func__));
 491                 goto exit_init_fw_cb;
 492         }
 493
 494         if (qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0],
 495                 init_fw_cb, init_fw_cb_dma) != QLA_SUCCESS) {
 496                 DEBUG2(printk("scsi%ld: %s: Failed to update local ifcb\n",
 497                                 ha->host_no, __func__));
 498                 goto exit_init_fw_cb;
 499         }
 500         status = QLA_SUCCESS;
 501
 502 exit_init_fw_cb:
 503         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
 504                                 init_fw_cb, init_fw_cb_dma);
 505 exit_init_fw_cb_no_free:
 506         return status;
 507 }
 508
 509 /**
 510  * qla4xxx_get_dhcp_ip_address - gets HBA ip address via DHCP
 511  * @ha: Pointer to host adapter structure.
 512  **/
 513 int qla4xxx_get_dhcp_ip_address(struct scsi_qla_host * ha)
 514 {
 515         struct addr_ctrl_blk *init_fw_cb;
 516         dma_addr_t init_fw_cb_dma;
 517         uint32_t mbox_cmd[MBOX_REG_COUNT];
 518         uint32_t mbox_sts[MBOX_REG_COUNT];
 519
 520         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
 521                                         sizeof(struct addr_ctrl_blk),
 522                                         &init_fw_cb_dma, GFP_KERNEL);
 523         if (init_fw_cb == NULL) {
 524                 printk("scsi%ld: %s: Unable to alloc init_cb\n", ha->host_no,
 525                        __func__);
 526                 return QLA_ERROR;
 527         }
 528
 529         /* Get Initialize Firmware Control Block. */
 530         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
 531         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma) !=
 532             QLA_SUCCESS) {
 533                 DEBUG2(printk("scsi%ld: %s: Failed to get init_fw_ctrl_blk\n",
 534                               ha->host_no, __func__));
 535                 dma_free_coherent(&ha->pdev->dev,
 536                                   sizeof(struct addr_ctrl_blk),
 537                                   init_fw_cb, init_fw_cb_dma);
 538                 return QLA_ERROR;
 539         }
 540
 541         /* Save IP Address. */
 542         qla4xxx_update_local_ip(ha, init_fw_cb);
 543         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
 544                                 init_fw_cb, init_fw_cb_dma);
 545
 546         return QLA_SUCCESS;
 547 }
 548
 549 /**
 550  * qla4xxx_get_firmware_state - gets firmware state of HBA
 551  * @ha: Pointer to host adapter structure.
 552  **/
 553 int qla4xxx_get_firmware_state(struct scsi_qla_host * ha)
 554 {
 555         uint32_t mbox_cmd[MBOX_REG_COUNT];
 556         uint32_t mbox_sts[MBOX_REG_COUNT];
 557
 558         /* Get firmware version */
 559         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 560         memset(&mbox_sts, 0, sizeof(mbox_sts));
 561
 562         mbox_cmd[0] = MBOX_CMD_GET_FW_STATE;
 563
 564         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 4, &mbox_cmd[0], &mbox_sts[0]) !=
 565             QLA_SUCCESS) {
 566                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATE failed w/ "
 567                               "status %04X\n", ha->host_no, __func__,
 568                               mbox_sts[0]));
 569                 return QLA_ERROR;
 570         }
 571         ha->firmware_state = mbox_sts[1];
 572         ha->board_id = mbox_sts[2];
 573         ha->addl_fw_state = mbox_sts[3];
 574         DEBUG2(printk("scsi%ld: %s firmware_state=0x%x\n",
 575                       ha->host_no, __func__, ha->firmware_state);)
 576
 577         return QLA_SUCCESS;
 578 }
 579
 580 /**
 581  * qla4xxx_get_firmware_status - retrieves firmware status
 582  * @ha: Pointer to host adapter structure.
 583  **/
 584 int qla4xxx_get_firmware_status(struct scsi_qla_host * ha)
 585 {
 586         uint32_t mbox_cmd[MBOX_REG_COUNT];
 587         uint32_t mbox_sts[MBOX_REG_COUNT];
 588
 589         /* Get firmware version */
 590         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 591         memset(&mbox_sts, 0, sizeof(mbox_sts));
 592
 593         mbox_cmd[0] = MBOX_CMD_GET_FW_STATUS;
 594
 595         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 3, &mbox_cmd[0], &mbox_sts[0]) !=
 596             QLA_SUCCESS) {
 597                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATUS failed w/ "
 598                               "status %04X\n", ha->host_no, __func__,
 599                               mbox_sts[0]));
 600                 return QLA_ERROR;
 601         }
 602
 603         ql4_printk(KERN_INFO, ha, "%ld firmare IOCBs available (%d).\n",
 604             ha->host_no, mbox_sts[2]);
 605
 606         return QLA_SUCCESS;
 607 }
 608
 609 /**
 610  * qla4xxx_get_fwddb_entry - retrieves firmware ddb entry
 611  * @ha: Pointer to host adapter structure.
 612  * @fw_ddb_index: Firmware's device database index
 613  * @fw_ddb_entry: Pointer to firmware's device database entry structure
 614  * @num_valid_ddb_entries: Pointer to number of valid ddb entries
 615  * @next_ddb_index: Pointer to next valid device database index
 616  * @fw_ddb_device_state: Pointer to device state
 617  **/
 618 int qla4xxx_get_fwddb_entry(struct scsi_qla_host *ha,
 619                             uint16_t fw_ddb_index,
 620                             struct dev_db_entry *fw_ddb_entry,
 621                             dma_addr_t fw_ddb_entry_dma,
 622                             uint32_t *num_valid_ddb_entries,
 623                             uint32_t *next_ddb_index,
 624                             uint32_t *fw_ddb_device_state,
 625                             uint32_t *conn_err_detail,
 626                             uint16_t *tcp_source_port_num,
 627                             uint16_t *connection_id)
 628 {
 629         int status = QLA_ERROR;
 630         uint16_t options;
 631         uint32_t mbox_cmd[MBOX_REG_COUNT];
 632         uint32_t mbox_sts[MBOX_REG_COUNT];
 633
 634         /* Make sure the device index is valid */
 635         if (fw_ddb_index >= MAX_DDB_ENTRIES) {
 636                 DEBUG2(printk("scsi%ld: %s: ddb [%d] out of range.\n",
 637                               ha->host_no, __func__, fw_ddb_index));
 638                 goto exit_get_fwddb;
 639         }
 640         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 641         memset(&mbox_sts, 0, sizeof(mbox_sts));
 642
 643         mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY;
 644         mbox_cmd[1] = (uint32_t) fw_ddb_index;
 645         mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
 646         mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
 647         mbox_cmd[4] = sizeof(struct dev_db_entry);
 648
 649         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 7, &mbox_cmd[0], &mbox_sts[0]) ==
 650             QLA_ERROR) {
 651                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_DATABASE_ENTRY failed"
 652                               " with status 0x%04X\n", ha->host_no, __func__,
 653                               mbox_sts[0]));
 654                 goto exit_get_fwddb;
 655         }
 656         if (fw_ddb_index != mbox_sts[1]) {
 657                 DEBUG2(printk("scsi%ld: %s: ddb mismatch [%d] != [%d].\n",
 658                               ha->host_no, __func__, fw_ddb_index,
 659                               mbox_sts[1]));
 660                 goto exit_get_fwddb;
 661         }
 662         if (fw_ddb_entry) {
 663                 options = le16_to_cpu(fw_ddb_entry->options);
 664                 if (options & DDB_OPT_IPV6_DEVICE) {
 665                         ql4_printk(KERN_INFO, ha, "%s: DDB[%d] MB0 %04x Tot %d "
 666                                 "Next %d State %04x ConnErr %08x %pI6 "
 667                                 ":%04d \"%s\"\n", __func__, fw_ddb_index,
 668                                 mbox_sts[0], mbox_sts[2], mbox_sts[3],
 669                                 mbox_sts[4], mbox_sts[5],
 670                                 fw_ddb_entry->ip_addr,
 671                                 le16_to_cpu(fw_ddb_entry->port),
 672                                 fw_ddb_entry->iscsi_name);
 673                 } else {
 674                         ql4_printk(KERN_INFO, ha, "%s: DDB[%d] MB0 %04x Tot %d "
 675                                 "Next %d State %04x ConnErr %08x %pI4 "
 676                                 ":%04d \"%s\"\n", __func__, fw_ddb_index,
 677                                 mbox_sts[0], mbox_sts[2], mbox_sts[3],
 678                                 mbox_sts[4], mbox_sts[5],
 679                                 fw_ddb_entry->ip_addr,
 680                                 le16_to_cpu(fw_ddb_entry->port),
 681                                 fw_ddb_entry->iscsi_name);
 682                 }
 683         }
 684         if (num_valid_ddb_entries)
 685                 *num_valid_ddb_entries = mbox_sts[2];
 686         if (next_ddb_index)
 687                 *next_ddb_index = mbox_sts[3];
 688         if (fw_ddb_device_state)
 689                 *fw_ddb_device_state = mbox_sts[4];
 690
 691         /*
 692          * RA: This mailbox has been changed to pass connection error and
 693          * details.  Its true for ISP4010 as per Version E - Not sure when it
 694          * was changed.  Get the time2wait from the fw_dd_entry field :
 695          * default_time2wait which we call it as minTime2Wait DEV_DB_ENTRY
 696          * struct.
 697          */
 698         if (conn_err_detail)
 699                 *conn_err_detail = mbox_sts[5];
 700         if (tcp_source_port_num)
 701                 *tcp_source_port_num = (uint16_t) (mbox_sts[6] >> 16);
 702         if (connection_id)
 703                 *connection_id = (uint16_t) mbox_sts[6] & 0x00FF;
 704         status = QLA_SUCCESS;
 705
 706 exit_get_fwddb:
 707         return status;
 708 }
 709
 710 /**
 711  * qla4xxx_set_fwddb_entry - sets a ddb entry.
 712  * @ha: Pointer to host adapter structure.
 713  * @fw_ddb_index: Firmware's device database index
 714  * @fw_ddb_entry: Pointer to firmware's ddb entry structure, or NULL.
 715  *
 716  * This routine initializes or updates the adapter's device database
 717  * entry for the specified device. It also triggers a login for the
 718  * specified device. Therefore, it may also be used as a secondary
 719  * login routine when a NULL pointer is specified for the fw_ddb_entry.
 720  **/
 721 int qla4xxx_set_ddb_entry(struct scsi_qla_host * ha, uint16_t fw_ddb_index,
 722                           dma_addr_t fw_ddb_entry_dma)
 723 {
 724         uint32_t mbox_cmd[MBOX_REG_COUNT];
 725         uint32_t mbox_sts[MBOX_REG_COUNT];
 726         int status;
 727
 728         /* Do not wait for completion. The firmware will send us an
 729          * ASTS_DATABASE_CHANGED (0x8014) to notify us of the login status.
 730          */
 731         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 732         memset(&mbox_sts, 0, sizeof(mbox_sts));
 733
 734         mbox_cmd[0] = MBOX_CMD_SET_DATABASE_ENTRY;
 735         mbox_cmd[1] = (uint32_t) fw_ddb_index;
 736         mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
 737         mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
 738         mbox_cmd[4] = sizeof(struct dev_db_entry);
 739
 740         status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0],
 741             &mbox_sts[0]);
 742         DEBUG2(printk("scsi%ld: %s: status=%d mbx0=0x%x mbx4=0x%x\n",
 743             ha->host_no, __func__, status, mbox_sts[0], mbox_sts[4]);)
 744
 745         return status;
 746 }
 747
 748 /**
 749  * qla4xxx_get_crash_record - retrieves crash record.
 750  * @ha: Pointer to host adapter structure.
 751  *
 752  * This routine retrieves a crash record from the QLA4010 after an 8002h aen.
 753  **/
 754 void qla4xxx_get_crash_record(struct scsi_qla_host * ha)
 755 {
 756         uint32_t mbox_cmd[MBOX_REG_COUNT];
 757         uint32_t mbox_sts[MBOX_REG_COUNT];
 758         struct crash_record *crash_record = NULL;
 759         dma_addr_t crash_record_dma = 0;
 760         uint32_t crash_record_size = 0;
 761
 762         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 763         memset(&mbox_sts, 0, sizeof(mbox_cmd));
 764
 765         /* Get size of crash record. */
 766         mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
 767
 768         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 769             QLA_SUCCESS) {
 770                 DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve size!\n",
 771                               ha->host_no, __func__));
 772                 goto exit_get_crash_record;
 773         }
 774         crash_record_size = mbox_sts[4];
 775         if (crash_record_size == 0) {
 776                 DEBUG2(printk("scsi%ld: %s: ERROR: Crash record size is 0!\n",
 777                               ha->host_no, __func__));
 778                 goto exit_get_crash_record;
 779         }
 780
 781         /* Alloc Memory for Crash Record. */
 782         crash_record = dma_alloc_coherent(&ha->pdev->dev, crash_record_size,
 783                                           &crash_record_dma, GFP_KERNEL);
 784         if (crash_record == NULL)
 785                 goto exit_get_crash_record;
 786
 787         /* Get Crash Record. */
 788         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 789         memset(&mbox_sts, 0, sizeof(mbox_cmd));
 790
 791         mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
 792         mbox_cmd[2] = LSDW(crash_record_dma);
 793         mbox_cmd[3] = MSDW(crash_record_dma);
 794         mbox_cmd[4] = crash_record_size;
 795
 796         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 797             QLA_SUCCESS)
 798                 goto exit_get_crash_record;
 799
 800         /* Dump Crash Record. */
 801
 802 exit_get_crash_record:
 803         if (crash_record)
 804                 dma_free_coherent(&ha->pdev->dev, crash_record_size,
 805                                   crash_record, crash_record_dma);
 806 }
 807
 808 /**
 809  * qla4xxx_get_conn_event_log - retrieves connection event log
 810  * @ha: Pointer to host adapter structure.
 811  **/
 812 void qla4xxx_get_conn_event_log(struct scsi_qla_host * ha)
 813 {
 814         uint32_t mbox_cmd[MBOX_REG_COUNT];
 815         uint32_t mbox_sts[MBOX_REG_COUNT];
 816         struct conn_event_log_entry *event_log = NULL;
 817         dma_addr_t event_log_dma = 0;
 818         uint32_t event_log_size = 0;
 819         uint32_t num_valid_entries;
 820         uint32_t      oldest_entry = 0;
 821         uint32_t        max_event_log_entries;
 822         uint8_t         i;
 823
 824
 825         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 826         memset(&mbox_sts, 0, sizeof(mbox_cmd));
 827
 828         /* Get size of crash record. */
 829         mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
 830
 831         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 832             QLA_SUCCESS)
 833                 goto exit_get_event_log;
 834
 835         event_log_size = mbox_sts[4];
 836         if (event_log_size == 0)
 837                 goto exit_get_event_log;
 838
 839         /* Alloc Memory for Crash Record. */
 840         event_log = dma_alloc_coherent(&ha->pdev->dev, event_log_size,
 841                                        &event_log_dma, GFP_KERNEL);
 842         if (event_log == NULL)
 843                 goto exit_get_event_log;
 844
 845         /* Get Crash Record. */
 846         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 847         memset(&mbox_sts, 0, sizeof(mbox_cmd));
 848
 849         mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
 850         mbox_cmd[2] = LSDW(event_log_dma);
 851         mbox_cmd[3] = MSDW(event_log_dma);
 852
 853         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 854             QLA_SUCCESS) {
 855                 DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve event "
 856                               "log!\n", ha->host_no, __func__));
 857                 goto exit_get_event_log;
 858         }
 859
 860         /* Dump Event Log. */
 861         num_valid_entries = mbox_sts[1];
 862
 863         max_event_log_entries = event_log_size /
 864                 sizeof(struct conn_event_log_entry);
 865
 866         if (num_valid_entries > max_event_log_entries)
 867                 oldest_entry = num_valid_entries % max_event_log_entries;
 868
 869         DEBUG3(printk("scsi%ld: Connection Event Log Dump (%d entries):\n",
 870                       ha->host_no, num_valid_entries));
 871
 872         if (ql4xextended_error_logging == 3) {
 873                 if (oldest_entry == 0) {
 874                         /* Circular Buffer has not wrapped around */
 875                         for (i=0; i < num_valid_entries; i++) {
 876                                 qla4xxx_dump_buffer((uint8_t *)event_log+
 877                                                     (i*sizeof(*event_log)),
 878                                                     sizeof(*event_log));
 879                         }
 880                 }
 881                 else {
 882                         /* Circular Buffer has wrapped around -
 883                          * display accordingly*/
 884                         for (i=oldest_entry; i < max_event_log_entries; i++) {
 885                                 qla4xxx_dump_buffer((uint8_t *)event_log+
 886                                                     (i*sizeof(*event_log)),
 887                                                     sizeof(*event_log));
 888                         }
 889                         for (i=0; i < oldest_entry; i++) {
 890                                 qla4xxx_dump_buffer((uint8_t *)event_log+
 891                                                     (i*sizeof(*event_log)),
 892                                                     sizeof(*event_log));
 893                         }
 894                 }
 895         }
 896
 897 exit_get_event_log:
 898         if (event_log)
 899                 dma_free_coherent(&ha->pdev->dev, event_log_size, event_log,
 900                                   event_log_dma);
 901 }
 902
 903 /**
 904  * qla4xxx_abort_task - issues Abort Task
 905  * @ha: Pointer to host adapter structure.
 906  * @srb: Pointer to srb entry
 907  *
 908  * This routine performs a LUN RESET on the specified target/lun.
 909  * The caller must ensure that the ddb_entry and lun_entry pointers
 910  * are valid before calling this routine.
 911  **/
 912 int qla4xxx_abort_task(struct scsi_qla_host *ha, struct srb *srb)
 913 {
 914         uint32_t mbox_cmd[MBOX_REG_COUNT];
 915         uint32_t mbox_sts[MBOX_REG_COUNT];
 916         struct scsi_cmnd *cmd = srb->cmd;
 917         int status = QLA_SUCCESS;
 918         unsigned long flags = 0;
 919         uint32_t index;
 920
 921         /*
 922          * Send abort task command to ISP, so that the ISP will return
 923          * request with ABORT status
 924          */
 925         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 926         memset(&mbox_sts, 0, sizeof(mbox_sts));
 927
 928         spin_lock_irqsave(&ha->hardware_lock, flags);
 929         index = (unsigned long)(unsigned char *)cmd->host_scribble;
 930         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 931
 932         /* Firmware already posted completion on response queue */
 933         if (index == MAX_SRBS)
 934                 return status;
 935
 936         mbox_cmd[0] = MBOX_CMD_ABORT_TASK;
 937         mbox_cmd[1] = srb->fw_ddb_index;
 938         mbox_cmd[2] = index;
 939         /* Immediate Command Enable */
 940         mbox_cmd[5] = 0x01;
 941
 942         qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0],
 943             &mbox_sts[0]);
 944         if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE) {
 945                 status = QLA_ERROR;
 946
 947                 DEBUG2(printk(KERN_WARNING "scsi%ld:%d:%d: abort task FAILED: "
 948                     "mbx0=%04X, mb1=%04X, mb2=%04X, mb3=%04X, mb4=%04X\n",
 949                     ha->host_no, cmd->device->id, cmd->device->lun, mbox_sts[0],
 950                     mbox_sts[1], mbox_sts[2], mbox_sts[3], mbox_sts[4]));
 951         }
 952
 953         return status;
 954 }
 955
 956 /**
 957  * qla4xxx_reset_lun - issues LUN Reset
 958  * @ha: Pointer to host adapter structure.
 959  * @ddb_entry: Pointer to device database entry
 960  * @lun: lun number
 961  *
 962  * This routine performs a LUN RESET on the specified target/lun.
 963  * The caller must ensure that the ddb_entry and lun_entry pointers
 964  * are valid before calling this routine.
 965  **/
 966 int qla4xxx_reset_lun(struct scsi_qla_host * ha, struct ddb_entry * ddb_entry,
 967                       int lun)
 968 {
 969         uint32_t mbox_cmd[MBOX_REG_COUNT];
 970         uint32_t mbox_sts[MBOX_REG_COUNT];
 971         int status = QLA_SUCCESS;
 972
 973         DEBUG2(printk("scsi%ld:%d:%d: lun reset issued\n", ha->host_no,
 974                       ddb_entry->fw_ddb_index, lun));
 975
 976         /*
 977          * Send lun reset command to ISP, so that the ISP will return all
 978          * outstanding requests with RESET status
 979          */
 980         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 981         memset(&mbox_sts, 0, sizeof(mbox_sts));
 982
 983         mbox_cmd[0] = MBOX_CMD_LUN_RESET;
 984         mbox_cmd[1] = ddb_entry->fw_ddb_index;
 985         mbox_cmd[2] = lun << 8;
 986         mbox_cmd[5] = 0x01;     /* Immediate Command Enable */
 987
 988         qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], &mbox_sts[0]);
 989         if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
 990             mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
 991                 status = QLA_ERROR;
 992
 993         return status;
 994 }
 995
 996 /**
 997  * qla4xxx_reset_target - issues target Reset
 998  * @ha: Pointer to host adapter structure.
 999  * @db_entry: Pointer to device database entry
1000  * @un_entry: Pointer to lun entry structure
1001  *
1002  * This routine performs a TARGET RESET on the specified target.
1003  * The caller must ensure that the ddb_entry pointers
1004  * are valid before calling this routine.
1005  **/
1006 int qla4xxx_reset_target(struct scsi_qla_host *ha,
1007                          struct ddb_entry *ddb_entry)
1008 {
1009         uint32_t mbox_cmd[MBOX_REG_COUNT];
1010         uint32_t mbox_sts[MBOX_REG_COUNT];
1011         int status = QLA_SUCCESS;
1012
1013         DEBUG2(printk("scsi%ld:%d: target reset issued\n", ha->host_no,
1014                       ddb_entry->fw_ddb_index));
1015
1016         /*
1017          * Send target reset command to ISP, so that the ISP will return all
1018          * outstanding requests with RESET status
1019          */
1020         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1021         memset(&mbox_sts, 0, sizeof(mbox_sts));
1022
1023         mbox_cmd[0] = MBOX_CMD_TARGET_WARM_RESET;
1024         mbox_cmd[1] = ddb_entry->fw_ddb_index;
1025         mbox_cmd[5] = 0x01;     /* Immediate Command Enable */
1026
1027         qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0],
1028                                 &mbox_sts[0]);
1029         if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
1030             mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
1031                 status = QLA_ERROR;
1032
1033         return status;
1034 }
1035
1036 int qla4xxx_get_flash(struct scsi_qla_host * ha, dma_addr_t dma_addr,
1037                       uint32_t offset, uint32_t len)
1038 {
1039         uint32_t mbox_cmd[MBOX_REG_COUNT];
1040         uint32_t mbox_sts[MBOX_REG_COUNT];
1041
1042         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1043         memset(&mbox_sts, 0, sizeof(mbox_sts));
1044
1045         mbox_cmd[0] = MBOX_CMD_READ_FLASH;
1046         mbox_cmd[1] = LSDW(dma_addr);
1047         mbox_cmd[2] = MSDW(dma_addr);
1048         mbox_cmd[3] = offset;
1049         mbox_cmd[4] = len;
1050
1051         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 2, &mbox_cmd[0], &mbox_sts[0]) !=
1052             QLA_SUCCESS) {
1053                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_READ_FLASH, failed w/ "
1054                     "status %04X %04X, offset %08x, len %08x\n", ha->host_no,
1055                     __func__, mbox_sts[0], mbox_sts[1], offset, len));
1056                 return QLA_ERROR;
1057         }
1058         return QLA_SUCCESS;
1059 }
1060
1061 /**
1062  * qla4xxx_get_fw_version - gets firmware version
1063  * @ha: Pointer to host adapter structure.
1064  *
1065  * Retrieves the firmware version on HBA. In QLA4010, mailboxes 2 & 3 may
1066  * hold an address for data.  Make sure that we write 0 to those mailboxes,
1067  * if unused.
1068  **/
1069 int qla4xxx_get_fw_version(struct scsi_qla_host * ha)
1070 {
1071         uint32_t mbox_cmd[MBOX_REG_COUNT];
1072         uint32_t mbox_sts[MBOX_REG_COUNT];
1073
1074         /* Get firmware version. */
1075         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1076         memset(&mbox_sts, 0, sizeof(mbox_sts));
1077
1078         mbox_cmd[0] = MBOX_CMD_ABOUT_FW;
1079
1080         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
1081             QLA_SUCCESS) {
1082                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_ABOUT_FW failed w/ "
1083                     "status %04X\n", ha->host_no, __func__, mbox_sts[0]));
1084                 return QLA_ERROR;
1085         }
1086
1087         /* Save firmware version information. */
1088         ha->firmware_version[0] = mbox_sts[1];
1089         ha->firmware_version[1] = mbox_sts[2];
1090         ha->patch_number = mbox_sts[3];
1091         ha->build_number = mbox_sts[4];
1092
1093         return QLA_SUCCESS;
1094 }
1095
1096 static int qla4xxx_get_default_ddb(struct scsi_qla_host *ha,
1097                                    dma_addr_t dma_addr)
1098 {
1099         uint32_t mbox_cmd[MBOX_REG_COUNT];
1100         uint32_t mbox_sts[MBOX_REG_COUNT];
1101
1102         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1103         memset(&mbox_sts, 0, sizeof(mbox_sts));
1104
1105         mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY_DEFAULTS;
1106         mbox_cmd[2] = LSDW(dma_addr);
1107         mbox_cmd[3] = MSDW(dma_addr);
1108
1109         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], &mbox_sts[0]) !=
1110             QLA_SUCCESS) {
1111                 DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
1112                      ha->host_no, __func__, mbox_sts[0]));
1113                 return QLA_ERROR;
1114         }
1115         return QLA_SUCCESS;
1116 }
1117
1118 static int qla4xxx_req_ddb_entry(struct scsi_qla_host *ha, uint32_t *ddb_index)
1119 {
1120         uint32_t mbox_cmd[MBOX_REG_COUNT];
1121         uint32_t mbox_sts[MBOX_REG_COUNT];
1122
1123         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1124         memset(&mbox_sts, 0, sizeof(mbox_sts));
1125
1126         mbox_cmd[0] = MBOX_CMD_REQUEST_DATABASE_ENTRY;
1127         mbox_cmd[1] = MAX_PRST_DEV_DB_ENTRIES;
1128
1129         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 3, &mbox_cmd[0], &mbox_sts[0]) !=
1130             QLA_SUCCESS) {
1131                 if (mbox_sts[0] == MBOX_STS_COMMAND_ERROR) {
1132                         *ddb_index = mbox_sts[2];
1133                 } else {
1134                         DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
1135                              ha->host_no, __func__, mbox_sts[0]));
1136                         return QLA_ERROR;
1137                 }
1138         } else {
1139                 *ddb_index = MAX_PRST_DEV_DB_ENTRIES;
1140         }
1141
1142         return QLA_SUCCESS;
1143 }
1144
1145
1146 int qla4xxx_send_tgts(struct scsi_qla_host *ha, char *ip, uint16_t port)
1147 {
1148         struct dev_db_entry *fw_ddb_entry;
1149         dma_addr_t fw_ddb_entry_dma;
1150         uint32_t ddb_index;
1151         int ret_val = QLA_SUCCESS;
1152
1153
1154         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
1155                                           sizeof(*fw_ddb_entry),
1156                                           &fw_ddb_entry_dma, GFP_KERNEL);
1157         if (!fw_ddb_entry) {
1158                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
1159                               ha->host_no, __func__));
1160                 ret_val = QLA_ERROR;
1161                 goto exit_send_tgts_no_free;
1162         }
1163
1164         ret_val = qla4xxx_get_default_ddb(ha, fw_ddb_entry_dma);
1165         if (ret_val != QLA_SUCCESS)
1166                 goto exit_send_tgts;
1167
1168         ret_val = qla4xxx_req_ddb_entry(ha, &ddb_index);
1169         if (ret_val != QLA_SUCCESS)
1170                 goto exit_send_tgts;
1171
1172         memset(fw_ddb_entry->iscsi_alias, 0,
1173                sizeof(fw_ddb_entry->iscsi_alias));
1174
1175         memset(fw_ddb_entry->iscsi_name, 0,
1176                sizeof(fw_ddb_entry->iscsi_name));
1177
1178         memset(fw_ddb_entry->ip_addr, 0, sizeof(fw_ddb_entry->ip_addr));
1179         memset(fw_ddb_entry->tgt_addr, 0,
1180                sizeof(fw_ddb_entry->tgt_addr));
1181
1182         fw_ddb_entry->options = (DDB_OPT_DISC_SESSION | DDB_OPT_TARGET);
1183         fw_ddb_entry->port = cpu_to_le16(ntohs(port));
1184
1185         fw_ddb_entry->ip_addr[0] = *ip;
1186         fw_ddb_entry->ip_addr[1] = *(ip + 1);
1187         fw_ddb_entry->ip_addr[2] = *(ip + 2);
1188         fw_ddb_entry->ip_addr[3] = *(ip + 3);
1189
1190         ret_val = qla4xxx_set_ddb_entry(ha, ddb_index, fw_ddb_entry_dma);
1191
1192 exit_send_tgts:
1193         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1194                           fw_ddb_entry, fw_ddb_entry_dma);
1195 exit_send_tgts_no_free:
1196         return ret_val;
1197 }
1198