drivers/scsi/qla4xxx/ql4_mbx.c

   1 /*
   2  * QLogic iSCSI HBA Driver
   3  * Copyright (c)  2003-2010 QLogic Corporation
   4  *
   5  * See LICENSE.qla4xxx for copyright and licensing details.
   6  */
   7
   8 #include "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->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                         /*
 155                          * Service the interrupt.
 156                          * The ISR will save the mailbox status registers
 157                          * to a temporary storage location in the adapter
 158                          * structure.
 159                          */
 160
 161                         spin_lock_irqsave(&ha->hardware_lock, flags);
 162                         if (is_qla8022(ha)) {
 163                                 intr_status =
 164                                     readl(&ha->qla4_8xxx_reg->host_int);
 165                                 if (intr_status & ISRX_82XX_RISC_INT) {
 166                                         ha->mbox_status_count = outCount;
 167                                         intr_status =
 168                                          readl(&ha->qla4_8xxx_reg->host_status);
 169                                         ha->isp_ops->interrupt_service_routine(
 170                                             ha, intr_status);
 171                                         if (test_bit(AF_INTERRUPTS_ON,
 172                                             &ha->flags) &&
 173                                             test_bit(AF_INTx_ENABLED,
 174                                             &ha->flags))
 175                                                 qla4_8xxx_wr_32(ha,
 176                                                 ha->nx_legacy_intr.tgt_mask_reg,
 177                                                 0xfbff);
 178                                 }
 179                         } else {
 180                                 intr_status = readl(&ha->reg->ctrl_status);
 181                                 if (intr_status & INTR_PENDING) {
 182                                         /*
 183                                          * Service the interrupt.
 184                                          * The ISR will save the mailbox status
 185                                          * registers to a temporary storage
 186                                          * location in the adapter structure.
 187                                          */
 188                                         ha->mbox_status_count = outCount;
 189                                         ha->isp_ops->interrupt_service_routine(
 190                                             ha, intr_status);
 191                                 }
 192                         }
 193                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 194                         msleep(10);
 195                 }
 196         }
 197
 198         /* Check for mailbox timeout. */
 199         if (!test_bit(AF_MBOX_COMMAND_DONE, &ha->flags)) {
 200                 if (is_qla8022(ha) &&
 201                     test_bit(AF_FW_RECOVERY, &ha->flags)) {
 202                         DEBUG2(ql4_printk(KERN_INFO, ha,
 203                             "scsi%ld: %s: prematurely completing mbx cmd as "
 204                             "firmware recovery detected\n",
 205                             ha->host_no, __func__));
 206                         goto mbox_exit;
 207                 }
 208                 DEBUG2(printk("scsi%ld: Mailbox Cmd 0x%08X timed out ...,"
 209                               " Scheduling Adapter Reset\n", ha->host_no,
 210                               mbx_cmd[0]));
 211                 ha->mailbox_timeout_count++;
 212                 mbx_sts[0] = (-1);
 213                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
 214                 goto mbox_exit;
 215         }
 216
 217         /*
 218          * Copy the mailbox out registers to the caller's mailbox in/out
 219          * structure.
 220          */
 221         spin_lock_irqsave(&ha->hardware_lock, flags);
 222         for (i = 0; i < outCount; i++)
 223                 mbx_sts[i] = ha->mbox_status[i];
 224
 225         /* Set return status and error flags (if applicable). */
 226         switch (ha->mbox_status[0]) {
 227         case MBOX_STS_COMMAND_COMPLETE:
 228                 status = QLA_SUCCESS;
 229                 break;
 230
 231         case MBOX_STS_INTERMEDIATE_COMPLETION:
 232                 status = QLA_SUCCESS;
 233                 break;
 234
 235         case MBOX_STS_BUSY:
 236                 DEBUG2( printk("scsi%ld: %s: Cmd = %08X, ISP BUSY\n",
 237                                ha->host_no, __func__, mbx_cmd[0]));
 238                 ha->mailbox_timeout_count++;
 239                 break;
 240
 241         default:
 242                 DEBUG2(printk("scsi%ld: %s: **** FAILED, cmd = %08X, "
 243                               "sts = %08X ****\n", ha->host_no, __func__,
 244                               mbx_cmd[0], mbx_sts[0]));
 245                 break;
 246         }
 247         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 248
 249 mbox_exit:
 250         mutex_lock(&ha->mbox_sem);
 251         clear_bit(AF_MBOX_COMMAND, &ha->flags);
 252         mutex_unlock(&ha->mbox_sem);
 253         clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
 254
 255         return status;
 256 }
 257
 258 void qla4xxx_mailbox_premature_completion(struct scsi_qla_host *ha)
 259 {
 260         set_bit(AF_FW_RECOVERY, &ha->flags);
 261         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: set FW RECOVERY!\n",
 262             ha->host_no, __func__);
 263
 264         if (test_bit(AF_MBOX_COMMAND, &ha->flags)) {
 265                 if (test_bit(AF_MBOX_COMMAND_NOPOLL, &ha->flags)) {
 266                         complete(&ha->mbx_intr_comp);
 267                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Due to fw "
 268                             "recovery, doing premature completion of "
 269                             "mbx cmd\n", ha->host_no, __func__);
 270
 271                 } else {
 272                         set_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
 273                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Due to fw "
 274                             "recovery, doing premature completion of "
 275                             "polling mbx cmd\n", ha->host_no, __func__);
 276                 }
 277         }
 278 }
 279
 280 static uint8_t
 281 qla4xxx_set_ifcb(struct scsi_qla_host *ha, uint32_t *mbox_cmd,
 282                  uint32_t *mbox_sts, dma_addr_t init_fw_cb_dma)
 283 {
 284         memset(mbox_cmd, 0, sizeof(mbox_cmd[0]) * MBOX_REG_COUNT);
 285         memset(mbox_sts, 0, sizeof(mbox_sts[0]) * MBOX_REG_COUNT);
 286
 287         if (is_qla8022(ha))
 288                 qla4_8xxx_wr_32(ha, ha->nx_db_wr_ptr, 0);
 289
 290         mbox_cmd[0] = MBOX_CMD_INITIALIZE_FIRMWARE;
 291         mbox_cmd[1] = 0;
 292         mbox_cmd[2] = LSDW(init_fw_cb_dma);
 293         mbox_cmd[3] = MSDW(init_fw_cb_dma);
 294         mbox_cmd[4] = sizeof(struct addr_ctrl_blk);
 295         mbox_cmd[5] = (IFCB_VER_MAX << 8) | IFCB_VER_MIN;
 296
 297         if (qla4xxx_mailbox_command(ha, 6, 6, mbox_cmd, mbox_sts) !=
 298             QLA_SUCCESS) {
 299                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: "
 300                               "MBOX_CMD_INITIALIZE_FIRMWARE"
 301                               " failed w/ status %04X\n",
 302                               ha->host_no, __func__, mbox_sts[0]));
 303                 return QLA_ERROR;
 304         }
 305         return QLA_SUCCESS;
 306 }
 307
 308 static uint8_t
 309 qla4xxx_get_ifcb(struct scsi_qla_host *ha, uint32_t *mbox_cmd,
 310                  uint32_t *mbox_sts, dma_addr_t init_fw_cb_dma)
 311 {
 312         memset(mbox_cmd, 0, sizeof(mbox_cmd[0]) * MBOX_REG_COUNT);
 313         memset(mbox_sts, 0, sizeof(mbox_sts[0]) * MBOX_REG_COUNT);
 314         mbox_cmd[0] = MBOX_CMD_GET_INIT_FW_CTRL_BLOCK;
 315         mbox_cmd[2] = LSDW(init_fw_cb_dma);
 316         mbox_cmd[3] = MSDW(init_fw_cb_dma);
 317         mbox_cmd[4] = sizeof(struct addr_ctrl_blk);
 318
 319         if (qla4xxx_mailbox_command(ha, 5, 5, mbox_cmd, mbox_sts) !=
 320             QLA_SUCCESS) {
 321                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: "
 322                               "MBOX_CMD_GET_INIT_FW_CTRL_BLOCK"
 323                               " failed w/ status %04X\n",
 324                               ha->host_no, __func__, mbox_sts[0]));
 325                 return QLA_ERROR;
 326         }
 327         return QLA_SUCCESS;
 328 }
 329
 330 static void
 331 qla4xxx_update_local_ip(struct scsi_qla_host *ha,
 332                          struct addr_ctrl_blk  *init_fw_cb)
 333 {
 334         /* Save IPv4 Address Info */
 335         memcpy(ha->ip_address, init_fw_cb->ipv4_addr,
 336                 min(sizeof(ha->ip_address), sizeof(init_fw_cb->ipv4_addr)));
 337         memcpy(ha->subnet_mask, init_fw_cb->ipv4_subnet,
 338                 min(sizeof(ha->subnet_mask), sizeof(init_fw_cb->ipv4_subnet)));
 339         memcpy(ha->gateway, init_fw_cb->ipv4_gw_addr,
 340                 min(sizeof(ha->gateway), sizeof(init_fw_cb->ipv4_gw_addr)));
 341
 342         if (is_ipv6_enabled(ha)) {
 343                 /* Save IPv6 Address */
 344                 ha->ipv6_link_local_state = init_fw_cb->ipv6_lnk_lcl_addr_state;
 345                 ha->ipv6_addr0_state = init_fw_cb->ipv6_addr0_state;
 346                 ha->ipv6_addr1_state = init_fw_cb->ipv6_addr1_state;
 347                 ha->ipv6_default_router_state = init_fw_cb->ipv6_dflt_rtr_state;
 348                 ha->ipv6_link_local_addr.in6_u.u6_addr8[0] = 0xFE;
 349                 ha->ipv6_link_local_addr.in6_u.u6_addr8[1] = 0x80;
 350
 351                 memcpy(&ha->ipv6_link_local_addr.in6_u.u6_addr8[8],
 352                         init_fw_cb->ipv6_if_id,
 353                         min(sizeof(ha->ipv6_link_local_addr)/2,
 354                         sizeof(init_fw_cb->ipv6_if_id)));
 355                 memcpy(&ha->ipv6_addr0, init_fw_cb->ipv6_addr0,
 356                         min(sizeof(ha->ipv6_addr0),
 357                         sizeof(init_fw_cb->ipv6_addr0)));
 358                 memcpy(&ha->ipv6_addr1, init_fw_cb->ipv6_addr1,
 359                         min(sizeof(ha->ipv6_addr1),
 360                         sizeof(init_fw_cb->ipv6_addr1)));
 361                 memcpy(&ha->ipv6_default_router_addr,
 362                         init_fw_cb->ipv6_dflt_rtr_addr,
 363                         min(sizeof(ha->ipv6_default_router_addr),
 364                         sizeof(init_fw_cb->ipv6_dflt_rtr_addr)));
 365         }
 366 }
 367
 368 static uint8_t
 369 qla4xxx_update_local_ifcb(struct scsi_qla_host *ha,
 370                           uint32_t *mbox_cmd,
 371                           uint32_t *mbox_sts,
 372                           struct addr_ctrl_blk  *init_fw_cb,
 373                           dma_addr_t init_fw_cb_dma)
 374 {
 375         if (qla4xxx_get_ifcb(ha, mbox_cmd, mbox_sts, init_fw_cb_dma)
 376             != QLA_SUCCESS) {
 377                 DEBUG2(printk(KERN_WARNING
 378                               "scsi%ld: %s: Failed to get init_fw_ctrl_blk\n",
 379                               ha->host_no, __func__));
 380                 return QLA_ERROR;
 381         }
 382
 383         DEBUG2(qla4xxx_dump_buffer(init_fw_cb, sizeof(struct addr_ctrl_blk)));
 384
 385         /* Save some info in adapter structure. */
 386         ha->acb_version = init_fw_cb->acb_version;
 387         ha->firmware_options = le16_to_cpu(init_fw_cb->fw_options);
 388         ha->tcp_options = le16_to_cpu(init_fw_cb->ipv4_tcp_opts);
 389         ha->ipv4_options = le16_to_cpu(init_fw_cb->ipv4_ip_opts);
 390         ha->ipv4_addr_state = le16_to_cpu(init_fw_cb->ipv4_addr_state);
 391         ha->heartbeat_interval = init_fw_cb->hb_interval;
 392         memcpy(ha->name_string, init_fw_cb->iscsi_name,
 393                 min(sizeof(ha->name_string),
 394                 sizeof(init_fw_cb->iscsi_name)));
 395         /*memcpy(ha->alias, init_fw_cb->Alias,
 396                min(sizeof(ha->alias), sizeof(init_fw_cb->Alias)));*/
 397
 398         /* Save Command Line Paramater info */
 399         ha->discovery_wait = ql4xdiscoverywait;
 400
 401         if (ha->acb_version == ACB_SUPPORTED) {
 402                 ha->ipv6_options = init_fw_cb->ipv6_opts;
 403                 ha->ipv6_addl_options = init_fw_cb->ipv6_addtl_opts;
 404         }
 405         qla4xxx_update_local_ip(ha, init_fw_cb);
 406
 407         return QLA_SUCCESS;
 408 }
 409
 410 /**
 411  * qla4xxx_initialize_fw_cb - initializes firmware control block.
 412  * @ha: Pointer to host adapter structure.
 413  **/
 414 int qla4xxx_initialize_fw_cb(struct scsi_qla_host * ha)
 415 {
 416         struct addr_ctrl_blk *init_fw_cb;
 417         dma_addr_t init_fw_cb_dma;
 418         uint32_t mbox_cmd[MBOX_REG_COUNT];
 419         uint32_t mbox_sts[MBOX_REG_COUNT];
 420         int status = QLA_ERROR;
 421
 422         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
 423                                         sizeof(struct addr_ctrl_blk),
 424                                         &init_fw_cb_dma, GFP_KERNEL);
 425         if (init_fw_cb == NULL) {
 426                 DEBUG2(printk("scsi%ld: %s: Unable to alloc init_cb\n",
 427                               ha->host_no, __func__));
 428                 goto exit_init_fw_cb_no_free;
 429         }
 430         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
 431
 432         /* Get Initialize Firmware Control Block. */
 433         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 434         memset(&mbox_sts, 0, sizeof(mbox_sts));
 435
 436         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma) !=
 437             QLA_SUCCESS) {
 438                 dma_free_coherent(&ha->pdev->dev,
 439                                   sizeof(struct addr_ctrl_blk),
 440                                   init_fw_cb, init_fw_cb_dma);
 441                 goto exit_init_fw_cb;
 442         }
 443
 444         /* Initialize request and response queues. */
 445         qla4xxx_init_rings(ha);
 446
 447         /* Fill in the request and response queue information. */
 448         init_fw_cb->rqq_consumer_idx = cpu_to_le16(ha->request_out);
 449         init_fw_cb->compq_producer_idx = cpu_to_le16(ha->response_in);
 450         init_fw_cb->rqq_len = __constant_cpu_to_le16(REQUEST_QUEUE_DEPTH);
 451         init_fw_cb->compq_len = __constant_cpu_to_le16(RESPONSE_QUEUE_DEPTH);
 452         init_fw_cb->rqq_addr_lo = cpu_to_le32(LSDW(ha->request_dma));
 453         init_fw_cb->rqq_addr_hi = cpu_to_le32(MSDW(ha->request_dma));
 454         init_fw_cb->compq_addr_lo = cpu_to_le32(LSDW(ha->response_dma));
 455         init_fw_cb->compq_addr_hi = cpu_to_le32(MSDW(ha->response_dma));
 456         init_fw_cb->shdwreg_addr_lo = cpu_to_le32(LSDW(ha->shadow_regs_dma));
 457         init_fw_cb->shdwreg_addr_hi = cpu_to_le32(MSDW(ha->shadow_regs_dma));
 458
 459         /* Set up required options. */
 460         init_fw_cb->fw_options |=
 461                 __constant_cpu_to_le16(FWOPT_SESSION_MODE |
 462                                        FWOPT_INITIATOR_MODE);
 463
 464         if (is_qla8022(ha))
 465                 init_fw_cb->fw_options |=
 466                     __constant_cpu_to_le16(FWOPT_ENABLE_CRBDB);
 467
 468         init_fw_cb->fw_options &= __constant_cpu_to_le16(~FWOPT_TARGET_MODE);
 469
 470         if (qla4xxx_set_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)
 471                 != QLA_SUCCESS) {
 472                 DEBUG2(printk(KERN_WARNING
 473                               "scsi%ld: %s: Failed to set init_fw_ctrl_blk\n",
 474                               ha->host_no, __func__));
 475                 goto exit_init_fw_cb;
 476         }
 477
 478         if (qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0],
 479                 init_fw_cb, init_fw_cb_dma) != QLA_SUCCESS) {
 480                 DEBUG2(printk("scsi%ld: %s: Failed to update local ifcb\n",
 481                                 ha->host_no, __func__));
 482                 goto exit_init_fw_cb;
 483         }
 484         status = QLA_SUCCESS;
 485
 486 exit_init_fw_cb:
 487         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
 488                                 init_fw_cb, init_fw_cb_dma);
 489 exit_init_fw_cb_no_free:
 490         return status;
 491 }
 492
 493 /**
 494  * qla4xxx_get_dhcp_ip_address - gets HBA ip address via DHCP
 495  * @ha: Pointer to host adapter structure.
 496  **/
 497 int qla4xxx_get_dhcp_ip_address(struct scsi_qla_host * ha)
 498 {
 499         struct addr_ctrl_blk *init_fw_cb;
 500         dma_addr_t init_fw_cb_dma;
 501         uint32_t mbox_cmd[MBOX_REG_COUNT];
 502         uint32_t mbox_sts[MBOX_REG_COUNT];
 503
 504         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
 505                                         sizeof(struct addr_ctrl_blk),
 506                                         &init_fw_cb_dma, GFP_KERNEL);
 507         if (init_fw_cb == NULL) {
 508                 printk("scsi%ld: %s: Unable to alloc init_cb\n", ha->host_no,
 509                        __func__);
 510                 return QLA_ERROR;
 511         }
 512
 513         /* Get Initialize Firmware Control Block. */
 514         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
 515         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma) !=
 516             QLA_SUCCESS) {
 517                 DEBUG2(printk("scsi%ld: %s: Failed to get init_fw_ctrl_blk\n",
 518                               ha->host_no, __func__));
 519                 dma_free_coherent(&ha->pdev->dev,
 520                                   sizeof(struct addr_ctrl_blk),
 521                                   init_fw_cb, init_fw_cb_dma);
 522                 return QLA_ERROR;
 523         }
 524
 525         /* Save IP Address. */
 526         qla4xxx_update_local_ip(ha, init_fw_cb);
 527         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
 528                                 init_fw_cb, init_fw_cb_dma);
 529
 530         return QLA_SUCCESS;
 531 }
 532
 533 /**
 534  * qla4xxx_get_firmware_state - gets firmware state of HBA
 535  * @ha: Pointer to host adapter structure.
 536  **/
 537 int qla4xxx_get_firmware_state(struct scsi_qla_host * ha)
 538 {
 539         uint32_t mbox_cmd[MBOX_REG_COUNT];
 540         uint32_t mbox_sts[MBOX_REG_COUNT];
 541
 542         /* Get firmware version */
 543         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 544         memset(&mbox_sts, 0, sizeof(mbox_sts));
 545
 546         mbox_cmd[0] = MBOX_CMD_GET_FW_STATE;
 547
 548         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 4, &mbox_cmd[0], &mbox_sts[0]) !=
 549             QLA_SUCCESS) {
 550                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATE failed w/ "
 551                               "status %04X\n", ha->host_no, __func__,
 552                               mbox_sts[0]));
 553                 return QLA_ERROR;
 554         }
 555         ha->firmware_state = mbox_sts[1];
 556         ha->board_id = mbox_sts[2];
 557         ha->addl_fw_state = mbox_sts[3];
 558         DEBUG2(printk("scsi%ld: %s firmware_state=0x%x\n",
 559                       ha->host_no, __func__, ha->firmware_state);)
 560
 561         return QLA_SUCCESS;
 562 }
 563
 564 /**
 565  * qla4xxx_get_firmware_status - retrieves firmware status
 566  * @ha: Pointer to host adapter structure.
 567  **/
 568 int qla4xxx_get_firmware_status(struct scsi_qla_host * ha)
 569 {
 570         uint32_t mbox_cmd[MBOX_REG_COUNT];
 571         uint32_t mbox_sts[MBOX_REG_COUNT];
 572
 573         /* Get firmware version */
 574         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 575         memset(&mbox_sts, 0, sizeof(mbox_sts));
 576
 577         mbox_cmd[0] = MBOX_CMD_GET_FW_STATUS;
 578
 579         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 3, &mbox_cmd[0], &mbox_sts[0]) !=
 580             QLA_SUCCESS) {
 581                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATUS failed w/ "
 582                               "status %04X\n", ha->host_no, __func__,
 583                               mbox_sts[0]));
 584                 return QLA_ERROR;
 585         }
 586
 587         ql4_printk(KERN_INFO, ha, "%ld firmare IOCBs available (%d).\n",
 588             ha->host_no, mbox_sts[2]);
 589
 590         return QLA_SUCCESS;
 591 }
 592
 593 /**
 594  * qla4xxx_get_fwddb_entry - retrieves firmware ddb entry
 595  * @ha: Pointer to host adapter structure.
 596  * @fw_ddb_index: Firmware's device database index
 597  * @fw_ddb_entry: Pointer to firmware's device database entry structure
 598  * @num_valid_ddb_entries: Pointer to number of valid ddb entries
 599  * @next_ddb_index: Pointer to next valid device database index
 600  * @fw_ddb_device_state: Pointer to device state
 601  **/
 602 int qla4xxx_get_fwddb_entry(struct scsi_qla_host *ha,
 603                             uint16_t fw_ddb_index,
 604                             struct dev_db_entry *fw_ddb_entry,
 605                             dma_addr_t fw_ddb_entry_dma,
 606                             uint32_t *num_valid_ddb_entries,
 607                             uint32_t *next_ddb_index,
 608                             uint32_t *fw_ddb_device_state,
 609                             uint32_t *conn_err_detail,
 610                             uint16_t *tcp_source_port_num,
 611                             uint16_t *connection_id)
 612 {
 613         int status = QLA_ERROR;
 614         uint16_t options;
 615         uint32_t mbox_cmd[MBOX_REG_COUNT];
 616         uint32_t mbox_sts[MBOX_REG_COUNT];
 617
 618         /* Make sure the device index is valid */
 619         if (fw_ddb_index >= MAX_DDB_ENTRIES) {
 620                 DEBUG2(printk("scsi%ld: %s: ddb [%d] out of range.\n",
 621                               ha->host_no, __func__, fw_ddb_index));
 622                 goto exit_get_fwddb;
 623         }
 624         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 625         memset(&mbox_sts, 0, sizeof(mbox_sts));
 626
 627         mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY;
 628         mbox_cmd[1] = (uint32_t) fw_ddb_index;
 629         mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
 630         mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
 631         mbox_cmd[4] = sizeof(struct dev_db_entry);
 632
 633         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 7, &mbox_cmd[0], &mbox_sts[0]) ==
 634             QLA_ERROR) {
 635                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_DATABASE_ENTRY failed"
 636                               " with status 0x%04X\n", ha->host_no, __func__,
 637                               mbox_sts[0]));
 638                 goto exit_get_fwddb;
 639         }
 640         if (fw_ddb_index != mbox_sts[1]) {
 641                 DEBUG2(printk("scsi%ld: %s: ddb mismatch [%d] != [%d].\n",
 642                               ha->host_no, __func__, fw_ddb_index,
 643                               mbox_sts[1]));
 644                 goto exit_get_fwddb;
 645         }
 646         if (fw_ddb_entry) {
 647                 options = le16_to_cpu(fw_ddb_entry->options);
 648                 if (options & DDB_OPT_IPV6_DEVICE) {
 649                         ql4_printk(KERN_INFO, ha, "%s: DDB[%d] MB0 %04x Tot %d "
 650                                 "Next %d State %04x ConnErr %08x %pI6 "
 651                                 ":%04d \"%s\"\n", __func__, fw_ddb_index,
 652                                 mbox_sts[0], mbox_sts[2], mbox_sts[3],
 653                                 mbox_sts[4], mbox_sts[5],
 654                                 fw_ddb_entry->ip_addr,
 655                                 le16_to_cpu(fw_ddb_entry->port),
 656                                 fw_ddb_entry->iscsi_name);
 657                 } else {
 658                         ql4_printk(KERN_INFO, ha, "%s: DDB[%d] MB0 %04x Tot %d "
 659                                 "Next %d State %04x ConnErr %08x %pI4 "
 660                                 ":%04d \"%s\"\n", __func__, fw_ddb_index,
 661                                 mbox_sts[0], mbox_sts[2], mbox_sts[3],
 662                                 mbox_sts[4], mbox_sts[5],
 663                                 fw_ddb_entry->ip_addr,
 664                                 le16_to_cpu(fw_ddb_entry->port),
 665                                 fw_ddb_entry->iscsi_name);
 666                 }
 667         }
 668         if (num_valid_ddb_entries)
 669                 *num_valid_ddb_entries = mbox_sts[2];
 670         if (next_ddb_index)
 671                 *next_ddb_index = mbox_sts[3];
 672         if (fw_ddb_device_state)
 673                 *fw_ddb_device_state = mbox_sts[4];
 674
 675         /*
 676          * RA: This mailbox has been changed to pass connection error and
 677          * details.  Its true for ISP4010 as per Version E - Not sure when it
 678          * was changed.  Get the time2wait from the fw_dd_entry field :
 679          * default_time2wait which we call it as minTime2Wait DEV_DB_ENTRY
 680          * struct.
 681          */
 682         if (conn_err_detail)
 683                 *conn_err_detail = mbox_sts[5];
 684         if (tcp_source_port_num)
 685                 *tcp_source_port_num = (uint16_t) (mbox_sts[6] >> 16);
 686         if (connection_id)
 687                 *connection_id = (uint16_t) mbox_sts[6] & 0x00FF;
 688         status = QLA_SUCCESS;
 689
 690 exit_get_fwddb:
 691         return status;
 692 }
 693
 694 /**
 695  * qla4xxx_set_fwddb_entry - sets a ddb entry.
 696  * @ha: Pointer to host adapter structure.
 697  * @fw_ddb_index: Firmware's device database index
 698  * @fw_ddb_entry: Pointer to firmware's ddb entry structure, or NULL.
 699  *
 700  * This routine initializes or updates the adapter's device database
 701  * entry for the specified device. It also triggers a login for the
 702  * specified device. Therefore, it may also be used as a secondary
 703  * login routine when a NULL pointer is specified for the fw_ddb_entry.
 704  **/
 705 int qla4xxx_set_ddb_entry(struct scsi_qla_host * ha, uint16_t fw_ddb_index,
 706                           dma_addr_t fw_ddb_entry_dma)
 707 {
 708         uint32_t mbox_cmd[MBOX_REG_COUNT];
 709         uint32_t mbox_sts[MBOX_REG_COUNT];
 710         int status;
 711
 712         /* Do not wait for completion. The firmware will send us an
 713          * ASTS_DATABASE_CHANGED (0x8014) to notify us of the login status.
 714          */
 715         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 716         memset(&mbox_sts, 0, sizeof(mbox_sts));
 717
 718         mbox_cmd[0] = MBOX_CMD_SET_DATABASE_ENTRY;
 719         mbox_cmd[1] = (uint32_t) fw_ddb_index;
 720         mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
 721         mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
 722         mbox_cmd[4] = sizeof(struct dev_db_entry);
 723
 724         status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0],
 725             &mbox_sts[0]);
 726         DEBUG2(printk("scsi%ld: %s: status=%d mbx0=0x%x mbx4=0x%x\n",
 727             ha->host_no, __func__, status, mbox_sts[0], mbox_sts[4]);)
 728
 729         return status;
 730 }
 731
 732 /**
 733  * qla4xxx_get_crash_record - retrieves crash record.
 734  * @ha: Pointer to host adapter structure.
 735  *
 736  * This routine retrieves a crash record from the QLA4010 after an 8002h aen.
 737  **/
 738 void qla4xxx_get_crash_record(struct scsi_qla_host * ha)
 739 {
 740         uint32_t mbox_cmd[MBOX_REG_COUNT];
 741         uint32_t mbox_sts[MBOX_REG_COUNT];
 742         struct crash_record *crash_record = NULL;
 743         dma_addr_t crash_record_dma = 0;
 744         uint32_t crash_record_size = 0;
 745
 746         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 747         memset(&mbox_sts, 0, sizeof(mbox_cmd));
 748
 749         /* Get size of crash record. */
 750         mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
 751
 752         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 753             QLA_SUCCESS) {
 754                 DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve size!\n",
 755                               ha->host_no, __func__));
 756                 goto exit_get_crash_record;
 757         }
 758         crash_record_size = mbox_sts[4];
 759         if (crash_record_size == 0) {
 760                 DEBUG2(printk("scsi%ld: %s: ERROR: Crash record size is 0!\n",
 761                               ha->host_no, __func__));
 762                 goto exit_get_crash_record;
 763         }
 764
 765         /* Alloc Memory for Crash Record. */
 766         crash_record = dma_alloc_coherent(&ha->pdev->dev, crash_record_size,
 767                                           &crash_record_dma, GFP_KERNEL);
 768         if (crash_record == NULL)
 769                 goto exit_get_crash_record;
 770
 771         /* Get Crash Record. */
 772         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 773         memset(&mbox_sts, 0, sizeof(mbox_cmd));
 774
 775         mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
 776         mbox_cmd[2] = LSDW(crash_record_dma);
 777         mbox_cmd[3] = MSDW(crash_record_dma);
 778         mbox_cmd[4] = crash_record_size;
 779
 780         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 781             QLA_SUCCESS)
 782                 goto exit_get_crash_record;
 783
 784         /* Dump Crash Record. */
 785
 786 exit_get_crash_record:
 787         if (crash_record)
 788                 dma_free_coherent(&ha->pdev->dev, crash_record_size,
 789                                   crash_record, crash_record_dma);
 790 }
 791
 792 /**
 793  * qla4xxx_get_conn_event_log - retrieves connection event log
 794  * @ha: Pointer to host adapter structure.
 795  **/
 796 void qla4xxx_get_conn_event_log(struct scsi_qla_host * ha)
 797 {
 798         uint32_t mbox_cmd[MBOX_REG_COUNT];
 799         uint32_t mbox_sts[MBOX_REG_COUNT];
 800         struct conn_event_log_entry *event_log = NULL;
 801         dma_addr_t event_log_dma = 0;
 802         uint32_t event_log_size = 0;
 803         uint32_t num_valid_entries;
 804         uint32_t      oldest_entry = 0;
 805         uint32_t        max_event_log_entries;
 806         uint8_t         i;
 807
 808
 809         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 810         memset(&mbox_sts, 0, sizeof(mbox_cmd));
 811
 812         /* Get size of crash record. */
 813         mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
 814
 815         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 816             QLA_SUCCESS)
 817                 goto exit_get_event_log;
 818
 819         event_log_size = mbox_sts[4];
 820         if (event_log_size == 0)
 821                 goto exit_get_event_log;
 822
 823         /* Alloc Memory for Crash Record. */
 824         event_log = dma_alloc_coherent(&ha->pdev->dev, event_log_size,
 825                                        &event_log_dma, GFP_KERNEL);
 826         if (event_log == NULL)
 827                 goto exit_get_event_log;
 828
 829         /* Get Crash Record. */
 830         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 831         memset(&mbox_sts, 0, sizeof(mbox_cmd));
 832
 833         mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
 834         mbox_cmd[2] = LSDW(event_log_dma);
 835         mbox_cmd[3] = MSDW(event_log_dma);
 836
 837         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 838             QLA_SUCCESS) {
 839                 DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve event "
 840                               "log!\n", ha->host_no, __func__));
 841                 goto exit_get_event_log;
 842         }
 843
 844         /* Dump Event Log. */
 845         num_valid_entries = mbox_sts[1];
 846
 847         max_event_log_entries = event_log_size /
 848                 sizeof(struct conn_event_log_entry);
 849
 850         if (num_valid_entries > max_event_log_entries)
 851                 oldest_entry = num_valid_entries % max_event_log_entries;
 852
 853         DEBUG3(printk("scsi%ld: Connection Event Log Dump (%d entries):\n",
 854                       ha->host_no, num_valid_entries));
 855
 856         if (ql4xextended_error_logging == 3) {
 857                 if (oldest_entry == 0) {
 858                         /* Circular Buffer has not wrapped around */
 859                         for (i=0; i < num_valid_entries; i++) {
 860                                 qla4xxx_dump_buffer((uint8_t *)event_log+
 861                                                     (i*sizeof(*event_log)),
 862                                                     sizeof(*event_log));
 863                         }
 864                 }
 865                 else {
 866                         /* Circular Buffer has wrapped around -
 867                          * display accordingly*/
 868                         for (i=oldest_entry; i < max_event_log_entries; i++) {
 869                                 qla4xxx_dump_buffer((uint8_t *)event_log+
 870                                                     (i*sizeof(*event_log)),
 871                                                     sizeof(*event_log));
 872                         }
 873                         for (i=0; i < oldest_entry; i++) {
 874                                 qla4xxx_dump_buffer((uint8_t *)event_log+
 875                                                     (i*sizeof(*event_log)),
 876                                                     sizeof(*event_log));
 877                         }
 878                 }
 879         }
 880
 881 exit_get_event_log:
 882         if (event_log)
 883                 dma_free_coherent(&ha->pdev->dev, event_log_size, event_log,
 884                                   event_log_dma);
 885 }
 886
 887 /**
 888  * qla4xxx_abort_task - issues Abort Task
 889  * @ha: Pointer to host adapter structure.
 890  * @srb: Pointer to srb entry
 891  *
 892  * This routine performs a LUN RESET on the specified target/lun.
 893  * The caller must ensure that the ddb_entry and lun_entry pointers
 894  * are valid before calling this routine.
 895  **/
 896 int qla4xxx_abort_task(struct scsi_qla_host *ha, struct srb *srb)
 897 {
 898         uint32_t mbox_cmd[MBOX_REG_COUNT];
 899         uint32_t mbox_sts[MBOX_REG_COUNT];
 900         struct scsi_cmnd *cmd = srb->cmd;
 901         int status = QLA_SUCCESS;
 902         unsigned long flags = 0;
 903         uint32_t index;
 904
 905         /*
 906          * Send abort task command to ISP, so that the ISP will return
 907          * request with ABORT status
 908          */
 909         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 910         memset(&mbox_sts, 0, sizeof(mbox_sts));
 911
 912         spin_lock_irqsave(&ha->hardware_lock, flags);
 913         index = (unsigned long)(unsigned char *)cmd->host_scribble;
 914         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 915
 916         /* Firmware already posted completion on response queue */
 917         if (index == MAX_SRBS)
 918                 return status;
 919
 920         mbox_cmd[0] = MBOX_CMD_ABORT_TASK;
 921         mbox_cmd[1] = srb->ddb->fw_ddb_index;
 922         mbox_cmd[2] = index;
 923         /* Immediate Command Enable */
 924         mbox_cmd[5] = 0x01;
 925
 926         qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0],
 927             &mbox_sts[0]);
 928         if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE) {
 929                 status = QLA_ERROR;
 930
 931                 DEBUG2(printk(KERN_WARNING "scsi%ld:%d:%d: abort task FAILED: "
 932                     "mbx0=%04X, mb1=%04X, mb2=%04X, mb3=%04X, mb4=%04X\n",
 933                     ha->host_no, cmd->device->id, cmd->device->lun, mbox_sts[0],
 934                     mbox_sts[1], mbox_sts[2], mbox_sts[3], mbox_sts[4]));
 935         }
 936
 937         return status;
 938 }
 939
 940 /**
 941  * qla4xxx_reset_lun - issues LUN Reset
 942  * @ha: Pointer to host adapter structure.
 943  * @ddb_entry: Pointer to device database entry
 944  * @lun: lun number
 945  *
 946  * This routine performs a LUN RESET on the specified target/lun.
 947  * The caller must ensure that the ddb_entry and lun_entry pointers
 948  * are valid before calling this routine.
 949  **/
 950 int qla4xxx_reset_lun(struct scsi_qla_host * ha, struct ddb_entry * ddb_entry,
 951                       int lun)
 952 {
 953         uint32_t mbox_cmd[MBOX_REG_COUNT];
 954         uint32_t mbox_sts[MBOX_REG_COUNT];
 955         int status = QLA_SUCCESS;
 956
 957         DEBUG2(printk("scsi%ld:%d:%d: lun reset issued\n", ha->host_no,
 958                       ddb_entry->fw_ddb_index, lun));
 959
 960         /*
 961          * Send lun reset command to ISP, so that the ISP will return all
 962          * outstanding requests with RESET status
 963          */
 964         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 965         memset(&mbox_sts, 0, sizeof(mbox_sts));
 966
 967         mbox_cmd[0] = MBOX_CMD_LUN_RESET;
 968         mbox_cmd[1] = ddb_entry->fw_ddb_index;
 969         mbox_cmd[2] = lun << 8;
 970         mbox_cmd[5] = 0x01;     /* Immediate Command Enable */
 971
 972         qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], &mbox_sts[0]);
 973         if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
 974             mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
 975                 status = QLA_ERROR;
 976
 977         return status;
 978 }
 979
 980 /**
 981  * qla4xxx_reset_target - issues target Reset
 982  * @ha: Pointer to host adapter structure.
 983  * @db_entry: Pointer to device database entry
 984  * @un_entry: Pointer to lun entry structure
 985  *
 986  * This routine performs a TARGET RESET on the specified target.
 987  * The caller must ensure that the ddb_entry pointers
 988  * are valid before calling this routine.
 989  **/
 990 int qla4xxx_reset_target(struct scsi_qla_host *ha,
 991                          struct ddb_entry *ddb_entry)
 992 {
 993         uint32_t mbox_cmd[MBOX_REG_COUNT];
 994         uint32_t mbox_sts[MBOX_REG_COUNT];
 995         int status = QLA_SUCCESS;
 996
 997         DEBUG2(printk("scsi%ld:%d: target reset issued\n", ha->host_no,
 998                       ddb_entry->fw_ddb_index));
 999
1000         /*
1001          * Send target reset command to ISP, so that the ISP will return all
1002          * outstanding requests with RESET status
1003          */
1004         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1005         memset(&mbox_sts, 0, sizeof(mbox_sts));
1006
1007         mbox_cmd[0] = MBOX_CMD_TARGET_WARM_RESET;
1008         mbox_cmd[1] = ddb_entry->fw_ddb_index;
1009         mbox_cmd[5] = 0x01;     /* Immediate Command Enable */
1010
1011         qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0],
1012                                 &mbox_sts[0]);
1013         if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
1014             mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
1015                 status = QLA_ERROR;
1016
1017         return status;
1018 }
1019
1020 int qla4xxx_get_flash(struct scsi_qla_host * ha, dma_addr_t dma_addr,
1021                       uint32_t offset, uint32_t len)
1022 {
1023         uint32_t mbox_cmd[MBOX_REG_COUNT];
1024         uint32_t mbox_sts[MBOX_REG_COUNT];
1025
1026         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1027         memset(&mbox_sts, 0, sizeof(mbox_sts));
1028
1029         mbox_cmd[0] = MBOX_CMD_READ_FLASH;
1030         mbox_cmd[1] = LSDW(dma_addr);
1031         mbox_cmd[2] = MSDW(dma_addr);
1032         mbox_cmd[3] = offset;
1033         mbox_cmd[4] = len;
1034
1035         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 2, &mbox_cmd[0], &mbox_sts[0]) !=
1036             QLA_SUCCESS) {
1037                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_READ_FLASH, failed w/ "
1038                     "status %04X %04X, offset %08x, len %08x\n", ha->host_no,
1039                     __func__, mbox_sts[0], mbox_sts[1], offset, len));
1040                 return QLA_ERROR;
1041         }
1042         return QLA_SUCCESS;
1043 }
1044
1045 /**
1046  * qla4xxx_get_fw_version - gets firmware version
1047  * @ha: Pointer to host adapter structure.
1048  *
1049  * Retrieves the firmware version on HBA. In QLA4010, mailboxes 2 & 3 may
1050  * hold an address for data.  Make sure that we write 0 to those mailboxes,
1051  * if unused.
1052  **/
1053 int qla4xxx_get_fw_version(struct scsi_qla_host * ha)
1054 {
1055         uint32_t mbox_cmd[MBOX_REG_COUNT];
1056         uint32_t mbox_sts[MBOX_REG_COUNT];
1057
1058         /* Get firmware version. */
1059         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1060         memset(&mbox_sts, 0, sizeof(mbox_sts));
1061
1062         mbox_cmd[0] = MBOX_CMD_ABOUT_FW;
1063
1064         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
1065             QLA_SUCCESS) {
1066                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_ABOUT_FW failed w/ "
1067                     "status %04X\n", ha->host_no, __func__, mbox_sts[0]));
1068                 return QLA_ERROR;
1069         }
1070
1071         /* Save firmware version information. */
1072         ha->firmware_version[0] = mbox_sts[1];
1073         ha->firmware_version[1] = mbox_sts[2];
1074         ha->patch_number = mbox_sts[3];
1075         ha->build_number = mbox_sts[4];
1076
1077         return QLA_SUCCESS;
1078 }
1079
1080 static int qla4xxx_get_default_ddb(struct scsi_qla_host *ha,
1081                                    dma_addr_t dma_addr)
1082 {
1083         uint32_t mbox_cmd[MBOX_REG_COUNT];
1084         uint32_t mbox_sts[MBOX_REG_COUNT];
1085
1086         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1087         memset(&mbox_sts, 0, sizeof(mbox_sts));
1088
1089         mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY_DEFAULTS;
1090         mbox_cmd[2] = LSDW(dma_addr);
1091         mbox_cmd[3] = MSDW(dma_addr);
1092
1093         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], &mbox_sts[0]) !=
1094             QLA_SUCCESS) {
1095                 DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
1096                      ha->host_no, __func__, mbox_sts[0]));
1097                 return QLA_ERROR;
1098         }
1099         return QLA_SUCCESS;
1100 }
1101
1102 static int qla4xxx_req_ddb_entry(struct scsi_qla_host *ha, uint32_t *ddb_index)
1103 {
1104         uint32_t mbox_cmd[MBOX_REG_COUNT];
1105         uint32_t mbox_sts[MBOX_REG_COUNT];
1106
1107         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1108         memset(&mbox_sts, 0, sizeof(mbox_sts));
1109
1110         mbox_cmd[0] = MBOX_CMD_REQUEST_DATABASE_ENTRY;
1111         mbox_cmd[1] = MAX_PRST_DEV_DB_ENTRIES;
1112
1113         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 3, &mbox_cmd[0], &mbox_sts[0]) !=
1114             QLA_SUCCESS) {
1115                 if (mbox_sts[0] == MBOX_STS_COMMAND_ERROR) {
1116                         *ddb_index = mbox_sts[2];
1117                 } else {
1118                         DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
1119                              ha->host_no, __func__, mbox_sts[0]));
1120                         return QLA_ERROR;
1121                 }
1122         } else {
1123                 *ddb_index = MAX_PRST_DEV_DB_ENTRIES;
1124         }
1125
1126         return QLA_SUCCESS;
1127 }
1128
1129
1130 int qla4xxx_send_tgts(struct scsi_qla_host *ha, char *ip, uint16_t port)
1131 {
1132         struct dev_db_entry *fw_ddb_entry;
1133         dma_addr_t fw_ddb_entry_dma;
1134         uint32_t ddb_index;
1135         int ret_val = QLA_SUCCESS;
1136
1137
1138         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
1139                                           sizeof(*fw_ddb_entry),
1140                                           &fw_ddb_entry_dma, GFP_KERNEL);
1141         if (!fw_ddb_entry) {
1142                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
1143                               ha->host_no, __func__));
1144                 ret_val = QLA_ERROR;
1145                 goto exit_send_tgts_no_free;
1146         }
1147
1148         ret_val = qla4xxx_get_default_ddb(ha, fw_ddb_entry_dma);
1149         if (ret_val != QLA_SUCCESS)
1150                 goto exit_send_tgts;
1151
1152         ret_val = qla4xxx_req_ddb_entry(ha, &ddb_index);
1153         if (ret_val != QLA_SUCCESS)
1154                 goto exit_send_tgts;
1155
1156         memset(fw_ddb_entry->iscsi_alias, 0,
1157                sizeof(fw_ddb_entry->iscsi_alias));
1158
1159         memset(fw_ddb_entry->iscsi_name, 0,
1160                sizeof(fw_ddb_entry->iscsi_name));
1161
1162         memset(fw_ddb_entry->ip_addr, 0, sizeof(fw_ddb_entry->ip_addr));
1163         memset(fw_ddb_entry->tgt_addr, 0,
1164                sizeof(fw_ddb_entry->tgt_addr));
1165
1166         fw_ddb_entry->options = (DDB_OPT_DISC_SESSION | DDB_OPT_TARGET);
1167         fw_ddb_entry->port = cpu_to_le16(ntohs(port));
1168
1169         fw_ddb_entry->ip_addr[0] = *ip;
1170         fw_ddb_entry->ip_addr[1] = *(ip + 1);
1171         fw_ddb_entry->ip_addr[2] = *(ip + 2);
1172         fw_ddb_entry->ip_addr[3] = *(ip + 3);
1173
1174         ret_val = qla4xxx_set_ddb_entry(ha, ddb_index, fw_ddb_entry_dma);
1175
1176 exit_send_tgts:
1177         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1178                           fw_ddb_entry, fw_ddb_entry_dma);
1179 exit_send_tgts_no_free:
1180         return ret_val;
1181 }
1182