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 issue 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         uint32_t dev_state;
  36
  37         /* Make sure that pointers are valid */
  38         if (!mbx_cmd || !mbx_sts) {
  39                 DEBUG2(printk("scsi%ld: %s: Invalid mbx_cmd or mbx_sts "
  40                               "pointer\n", ha->host_no, __func__));
  41                 return status;
  42         }
  43
  44         if (is_qla8022(ha)) {
  45                 if (test_bit(AF_FW_RECOVERY, &ha->flags)) {
  46                         DEBUG2(ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: "
  47                             "prematurely completing mbx cmd as firmware "
  48                             "recovery detected\n", ha->host_no, __func__));
  49                         return status;
  50                 }
  51                 /* Do not send any mbx cmd if h/w is in failed state*/
  52                 qla4_8xxx_idc_lock(ha);
  53                 dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
  54                 qla4_8xxx_idc_unlock(ha);
  55                 if (dev_state == QLA82XX_DEV_FAILED) {
  56                         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: H/W is in "
  57                             "failed state, do not send any mailbox commands\n",
  58                             ha->host_no, __func__);
  59                         return status;
  60                 }
  61         }
  62
  63         if ((is_aer_supported(ha)) &&
  64             (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))) {
  65                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Perm failure on EEH, "
  66                     "timeout MBX Exiting.\n", ha->host_no, __func__));
  67                 return status;
  68         }
  69
  70         /* Mailbox code active */
  71         wait_count = MBOX_TOV * 100;
  72
  73         while (wait_count--) {
  74                 mutex_lock(&ha->mbox_sem);
  75                 if (!test_bit(AF_MBOX_COMMAND, &ha->flags)) {
  76                         set_bit(AF_MBOX_COMMAND, &ha->flags);
  77                         mutex_unlock(&ha->mbox_sem);
  78                         break;
  79                 }
  80                 mutex_unlock(&ha->mbox_sem);
  81                 if (!wait_count) {
  82                         DEBUG2(printk("scsi%ld: %s: mbox_sem failed\n",
  83                                 ha->host_no, __func__));
  84                         return status;
  85                 }
  86                 msleep(10);
  87         }
  88
  89         /* To prevent overwriting mailbox registers for a command that has
  90          * not yet been serviced, check to see if an active command
  91          * (AEN, IOCB, etc.) is interrupting, then service it.
  92          * -----------------------------------------------------------------
  93          */
  94         spin_lock_irqsave(&ha->hardware_lock, flags);
  95
  96         if (!is_qla8022(ha)) {
  97                 intr_status = readl(&ha->reg->ctrl_status);
  98                 if (intr_status & CSR_SCSI_PROCESSOR_INTR) {
  99                         /* Service existing interrupt */
 100                         ha->isp_ops->interrupt_service_routine(ha, intr_status);
 101                         clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
 102                 }
 103         }
 104
 105         ha->mbox_status_count = outCount;
 106         for (i = 0; i < outCount; i++)
 107                 ha->mbox_status[i] = 0;
 108
 109         if (is_qla8022(ha)) {
 110                 /* Load all mailbox registers, except mailbox 0. */
 111                 DEBUG5(
 112                     printk("scsi%ld: %s: Cmd ", ha->host_no, __func__);
 113                     for (i = 0; i < inCount; i++)
 114                         printk("mb%d=%04x ", i, mbx_cmd[i]);
 115                     printk("\n"));
 116
 117                 for (i = 1; i < inCount; i++)
 118                         writel(mbx_cmd[i], &ha->qla4_8xxx_reg->mailbox_in[i]);
 119                 writel(mbx_cmd[0], &ha->qla4_8xxx_reg->mailbox_in[0]);
 120                 readl(&ha->qla4_8xxx_reg->mailbox_in[0]);
 121                 writel(HINT_MBX_INT_PENDING, &ha->qla4_8xxx_reg->hint);
 122         } else {
 123                 /* Load all mailbox registers, except mailbox 0. */
 124                 for (i = 1; i < inCount; i++)
 125                         writel(mbx_cmd[i], &ha->reg->mailbox[i]);
 126
 127                 /* Wakeup firmware  */
 128                 writel(mbx_cmd[0], &ha->reg->mailbox[0]);
 129                 readl(&ha->reg->mailbox[0]);
 130                 writel(set_rmask(CSR_INTR_RISC), &ha->reg->ctrl_status);
 131                 readl(&ha->reg->ctrl_status);
 132         }
 133
 134         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 135
 136         /* Wait for completion */
 137
 138         /*
 139          * If we don't want status, don't wait for the mailbox command to
 140          * complete.  For example, MBOX_CMD_RESET_FW doesn't return status,
 141          * you must poll the inbound Interrupt Mask for completion.
 142          */
 143         if (outCount == 0) {
 144                 status = QLA_SUCCESS;
 145                 goto mbox_exit;
 146         }
 147
 148         /*
 149          * Wait for completion: Poll or completion queue
 150          */
 151         if (test_bit(AF_IRQ_ATTACHED, &ha->flags) &&
 152             test_bit(AF_INTERRUPTS_ON, &ha->flags) &&
 153             test_bit(AF_ONLINE, &ha->flags) &&
 154             !test_bit(AF_HA_REMOVAL, &ha->flags)) {
 155                 /* Do not poll for completion. Use completion queue */
 156                 set_bit(AF_MBOX_COMMAND_NOPOLL, &ha->flags);
 157                 wait_for_completion_timeout(&ha->mbx_intr_comp, MBOX_TOV * HZ);
 158                 clear_bit(AF_MBOX_COMMAND_NOPOLL, &ha->flags);
 159         } else {
 160                 /* Poll for command to complete */
 161                 wait_count = jiffies + MBOX_TOV * HZ;
 162                 while (test_bit(AF_MBOX_COMMAND_DONE, &ha->flags) == 0) {
 163                         if (time_after_eq(jiffies, wait_count))
 164                                 break;
 165
 166                         /*
 167                          * Service the interrupt.
 168                          * The ISR will save the mailbox status registers
 169                          * to a temporary storage location in the adapter
 170                          * structure.
 171                          */
 172
 173                         spin_lock_irqsave(&ha->hardware_lock, flags);
 174                         if (is_qla8022(ha)) {
 175                                 intr_status =
 176                                     readl(&ha->qla4_8xxx_reg->host_int);
 177                                 if (intr_status & ISRX_82XX_RISC_INT) {
 178                                         ha->mbox_status_count = outCount;
 179                                         intr_status =
 180                                          readl(&ha->qla4_8xxx_reg->host_status);
 181                                         ha->isp_ops->interrupt_service_routine(
 182                                             ha, intr_status);
 183                                         if (test_bit(AF_INTERRUPTS_ON,
 184                                             &ha->flags) &&
 185                                             test_bit(AF_INTx_ENABLED,
 186                                             &ha->flags))
 187                                                 qla4_8xxx_wr_32(ha,
 188                                                 ha->nx_legacy_intr.tgt_mask_reg,
 189                                                 0xfbff);
 190                                 }
 191                         } else {
 192                                 intr_status = readl(&ha->reg->ctrl_status);
 193                                 if (intr_status & INTR_PENDING) {
 194                                         /*
 195                                          * Service the interrupt.
 196                                          * The ISR will save the mailbox status
 197                                          * registers to a temporary storage
 198                                          * location in the adapter structure.
 199                                          */
 200                                         ha->mbox_status_count = outCount;
 201                                         ha->isp_ops->interrupt_service_routine(
 202                                             ha, intr_status);
 203                                 }
 204                         }
 205                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 206                         msleep(10);
 207                 }
 208         }
 209
 210         /* Check for mailbox timeout. */
 211         if (!test_bit(AF_MBOX_COMMAND_DONE, &ha->flags)) {
 212                 if (is_qla8022(ha) &&
 213                     test_bit(AF_FW_RECOVERY, &ha->flags)) {
 214                         DEBUG2(ql4_printk(KERN_INFO, ha,
 215                             "scsi%ld: %s: prematurely completing mbx cmd as "
 216                             "firmware recovery detected\n",
 217                             ha->host_no, __func__));
 218                         goto mbox_exit;
 219                 }
 220                 DEBUG2(printk("scsi%ld: Mailbox Cmd 0x%08X timed out ...,"
 221                               " Scheduling Adapter Reset\n", ha->host_no,
 222                               mbx_cmd[0]));
 223                 ha->mailbox_timeout_count++;
 224                 mbx_sts[0] = (-1);
 225                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
 226                 goto mbox_exit;
 227         }
 228
 229         /*
 230          * Copy the mailbox out registers to the caller's mailbox in/out
 231          * structure.
 232          */
 233         spin_lock_irqsave(&ha->hardware_lock, flags);
 234         for (i = 0; i < outCount; i++)
 235                 mbx_sts[i] = ha->mbox_status[i];
 236
 237         /* Set return status and error flags (if applicable). */
 238         switch (ha->mbox_status[0]) {
 239         case MBOX_STS_COMMAND_COMPLETE:
 240                 status = QLA_SUCCESS;
 241                 break;
 242
 243         case MBOX_STS_INTERMEDIATE_COMPLETION:
 244                 status = QLA_SUCCESS;
 245                 break;
 246
 247         case MBOX_STS_BUSY:
 248                 DEBUG2( printk("scsi%ld: %s: Cmd = %08X, ISP BUSY\n",
 249                                ha->host_no, __func__, mbx_cmd[0]));
 250                 ha->mailbox_timeout_count++;
 251                 break;
 252
 253         default:
 254                 DEBUG2(printk("scsi%ld: %s: **** FAILED, cmd = %08X, "
 255                               "sts = %08X ****\n", ha->host_no, __func__,
 256                               mbx_cmd[0], mbx_sts[0]));
 257                 break;
 258         }
 259         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 260
 261 mbox_exit:
 262         mutex_lock(&ha->mbox_sem);
 263         clear_bit(AF_MBOX_COMMAND, &ha->flags);
 264         mutex_unlock(&ha->mbox_sem);
 265         clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
 266
 267         return status;
 268 }
 269
 270 void qla4xxx_mailbox_premature_completion(struct scsi_qla_host *ha)
 271 {
 272         set_bit(AF_FW_RECOVERY, &ha->flags);
 273         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: set FW RECOVERY!\n",
 274             ha->host_no, __func__);
 275
 276         if (test_bit(AF_MBOX_COMMAND, &ha->flags)) {
 277                 if (test_bit(AF_MBOX_COMMAND_NOPOLL, &ha->flags)) {
 278                         complete(&ha->mbx_intr_comp);
 279                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Due to fw "
 280                             "recovery, doing premature completion of "
 281                             "mbx cmd\n", ha->host_no, __func__);
 282
 283                 } else {
 284                         set_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
 285                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Due to fw "
 286                             "recovery, doing premature completion of "
 287                             "polling mbx cmd\n", ha->host_no, __func__);
 288                 }
 289         }
 290 }
 291
 292 static uint8_t
 293 qla4xxx_set_ifcb(struct scsi_qla_host *ha, uint32_t *mbox_cmd,
 294                  uint32_t *mbox_sts, dma_addr_t init_fw_cb_dma)
 295 {
 296         memset(mbox_cmd, 0, sizeof(mbox_cmd[0]) * MBOX_REG_COUNT);
 297         memset(mbox_sts, 0, sizeof(mbox_sts[0]) * MBOX_REG_COUNT);
 298
 299         if (is_qla8022(ha))
 300                 qla4_8xxx_wr_32(ha, ha->nx_db_wr_ptr, 0);
 301
 302         mbox_cmd[0] = MBOX_CMD_INITIALIZE_FIRMWARE;
 303         mbox_cmd[1] = 0;
 304         mbox_cmd[2] = LSDW(init_fw_cb_dma);
 305         mbox_cmd[3] = MSDW(init_fw_cb_dma);
 306         mbox_cmd[4] = sizeof(struct addr_ctrl_blk);
 307         mbox_cmd[5] = (IFCB_VER_MAX << 8) | IFCB_VER_MIN;
 308
 309         if (qla4xxx_mailbox_command(ha, 6, 6, mbox_cmd, mbox_sts) !=
 310             QLA_SUCCESS) {
 311                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: "
 312                               "MBOX_CMD_INITIALIZE_FIRMWARE"
 313                               " failed w/ status %04X\n",
 314                               ha->host_no, __func__, mbox_sts[0]));
 315                 return QLA_ERROR;
 316         }
 317         return QLA_SUCCESS;
 318 }
 319
 320 static uint8_t
 321 qla4xxx_get_ifcb(struct scsi_qla_host *ha, uint32_t *mbox_cmd,
 322                  uint32_t *mbox_sts, dma_addr_t init_fw_cb_dma)
 323 {
 324         memset(mbox_cmd, 0, sizeof(mbox_cmd[0]) * MBOX_REG_COUNT);
 325         memset(mbox_sts, 0, sizeof(mbox_sts[0]) * MBOX_REG_COUNT);
 326         mbox_cmd[0] = MBOX_CMD_GET_INIT_FW_CTRL_BLOCK;
 327         mbox_cmd[2] = LSDW(init_fw_cb_dma);
 328         mbox_cmd[3] = MSDW(init_fw_cb_dma);
 329         mbox_cmd[4] = sizeof(struct addr_ctrl_blk);
 330
 331         if (qla4xxx_mailbox_command(ha, 5, 5, mbox_cmd, mbox_sts) !=
 332             QLA_SUCCESS) {
 333                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: "
 334                               "MBOX_CMD_GET_INIT_FW_CTRL_BLOCK"
 335                               " failed w/ status %04X\n",
 336                               ha->host_no, __func__, mbox_sts[0]));
 337                 return QLA_ERROR;
 338         }
 339         return QLA_SUCCESS;
 340 }
 341
 342 static void
 343 qla4xxx_update_local_ip(struct scsi_qla_host *ha,
 344                          struct addr_ctrl_blk  *init_fw_cb)
 345 {
 346         /* Save IPv4 Address Info */
 347         memcpy(ha->ip_address, init_fw_cb->ipv4_addr,
 348                 min(sizeof(ha->ip_address), sizeof(init_fw_cb->ipv4_addr)));
 349         memcpy(ha->subnet_mask, init_fw_cb->ipv4_subnet,
 350                 min(sizeof(ha->subnet_mask), sizeof(init_fw_cb->ipv4_subnet)));
 351         memcpy(ha->gateway, init_fw_cb->ipv4_gw_addr,
 352                 min(sizeof(ha->gateway), sizeof(init_fw_cb->ipv4_gw_addr)));
 353
 354         if (is_ipv6_enabled(ha)) {
 355                 /* Save IPv6 Address */
 356                 ha->ipv6_link_local_state = init_fw_cb->ipv6_lnk_lcl_addr_state;
 357                 ha->ipv6_addr0_state = init_fw_cb->ipv6_addr0_state;
 358                 ha->ipv6_addr1_state = init_fw_cb->ipv6_addr1_state;
 359                 ha->ipv6_default_router_state = init_fw_cb->ipv6_dflt_rtr_state;
 360                 ha->ipv6_link_local_addr.in6_u.u6_addr8[0] = 0xFE;
 361                 ha->ipv6_link_local_addr.in6_u.u6_addr8[1] = 0x80;
 362
 363                 memcpy(&ha->ipv6_link_local_addr.in6_u.u6_addr8[8],
 364                         init_fw_cb->ipv6_if_id,
 365                         min(sizeof(ha->ipv6_link_local_addr)/2,
 366                         sizeof(init_fw_cb->ipv6_if_id)));
 367                 memcpy(&ha->ipv6_addr0, init_fw_cb->ipv6_addr0,
 368                         min(sizeof(ha->ipv6_addr0),
 369                         sizeof(init_fw_cb->ipv6_addr0)));
 370                 memcpy(&ha->ipv6_addr1, init_fw_cb->ipv6_addr1,
 371                         min(sizeof(ha->ipv6_addr1),
 372                         sizeof(init_fw_cb->ipv6_addr1)));
 373                 memcpy(&ha->ipv6_default_router_addr,
 374                         init_fw_cb->ipv6_dflt_rtr_addr,
 375                         min(sizeof(ha->ipv6_default_router_addr),
 376                         sizeof(init_fw_cb->ipv6_dflt_rtr_addr)));
 377         }
 378 }
 379
 380 static uint8_t
 381 qla4xxx_update_local_ifcb(struct scsi_qla_host *ha,
 382                           uint32_t *mbox_cmd,
 383                           uint32_t *mbox_sts,
 384                           struct addr_ctrl_blk  *init_fw_cb,
 385                           dma_addr_t init_fw_cb_dma)
 386 {
 387         if (qla4xxx_get_ifcb(ha, mbox_cmd, mbox_sts, init_fw_cb_dma)
 388             != QLA_SUCCESS) {
 389                 DEBUG2(printk(KERN_WARNING
 390                               "scsi%ld: %s: Failed to get init_fw_ctrl_blk\n",
 391                               ha->host_no, __func__));
 392                 return QLA_ERROR;
 393         }
 394
 395         DEBUG2(qla4xxx_dump_buffer(init_fw_cb, sizeof(struct addr_ctrl_blk)));
 396
 397         /* Save some info in adapter structure. */
 398         ha->acb_version = init_fw_cb->acb_version;
 399         ha->firmware_options = le16_to_cpu(init_fw_cb->fw_options);
 400         ha->tcp_options = le16_to_cpu(init_fw_cb->ipv4_tcp_opts);
 401         ha->ipv4_options = le16_to_cpu(init_fw_cb->ipv4_ip_opts);
 402         ha->ipv4_addr_state = le16_to_cpu(init_fw_cb->ipv4_addr_state);
 403         ha->heartbeat_interval = init_fw_cb->hb_interval;
 404         memcpy(ha->name_string, init_fw_cb->iscsi_name,
 405                 min(sizeof(ha->name_string),
 406                 sizeof(init_fw_cb->iscsi_name)));
 407         /*memcpy(ha->alias, init_fw_cb->Alias,
 408                min(sizeof(ha->alias), sizeof(init_fw_cb->Alias)));*/
 409
 410         if (ha->acb_version == ACB_SUPPORTED) {
 411                 ha->ipv6_options = init_fw_cb->ipv6_opts;
 412                 ha->ipv6_addl_options = init_fw_cb->ipv6_addtl_opts;
 413         }
 414         qla4xxx_update_local_ip(ha, init_fw_cb);
 415
 416         return QLA_SUCCESS;
 417 }
 418
 419 /**
 420  * qla4xxx_initialize_fw_cb - initializes firmware control block.
 421  * @ha: Pointer to host adapter structure.
 422  **/
 423 int qla4xxx_initialize_fw_cb(struct scsi_qla_host * ha)
 424 {
 425         struct addr_ctrl_blk *init_fw_cb;
 426         dma_addr_t init_fw_cb_dma;
 427         uint32_t mbox_cmd[MBOX_REG_COUNT];
 428         uint32_t mbox_sts[MBOX_REG_COUNT];
 429         int status = QLA_ERROR;
 430
 431         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
 432                                         sizeof(struct addr_ctrl_blk),
 433                                         &init_fw_cb_dma, GFP_KERNEL);
 434         if (init_fw_cb == NULL) {
 435                 DEBUG2(printk("scsi%ld: %s: Unable to alloc init_cb\n",
 436                               ha->host_no, __func__));
 437                 goto exit_init_fw_cb_no_free;
 438         }
 439         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
 440
 441         /* Get Initialize Firmware Control Block. */
 442         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 443         memset(&mbox_sts, 0, sizeof(mbox_sts));
 444
 445         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma) !=
 446             QLA_SUCCESS) {
 447                 dma_free_coherent(&ha->pdev->dev,
 448                                   sizeof(struct addr_ctrl_blk),
 449                                   init_fw_cb, init_fw_cb_dma);
 450                 goto exit_init_fw_cb;
 451         }
 452
 453         /* Initialize request and response queues. */
 454         qla4xxx_init_rings(ha);
 455
 456         /* Fill in the request and response queue information. */
 457         init_fw_cb->rqq_consumer_idx = cpu_to_le16(ha->request_out);
 458         init_fw_cb->compq_producer_idx = cpu_to_le16(ha->response_in);
 459         init_fw_cb->rqq_len = __constant_cpu_to_le16(REQUEST_QUEUE_DEPTH);
 460         init_fw_cb->compq_len = __constant_cpu_to_le16(RESPONSE_QUEUE_DEPTH);
 461         init_fw_cb->rqq_addr_lo = cpu_to_le32(LSDW(ha->request_dma));
 462         init_fw_cb->rqq_addr_hi = cpu_to_le32(MSDW(ha->request_dma));
 463         init_fw_cb->compq_addr_lo = cpu_to_le32(LSDW(ha->response_dma));
 464         init_fw_cb->compq_addr_hi = cpu_to_le32(MSDW(ha->response_dma));
 465         init_fw_cb->shdwreg_addr_lo = cpu_to_le32(LSDW(ha->shadow_regs_dma));
 466         init_fw_cb->shdwreg_addr_hi = cpu_to_le32(MSDW(ha->shadow_regs_dma));
 467
 468         /* Set up required options. */
 469         init_fw_cb->fw_options |=
 470                 __constant_cpu_to_le16(FWOPT_SESSION_MODE |
 471                                        FWOPT_INITIATOR_MODE);
 472
 473         if (is_qla8022(ha))
 474                 init_fw_cb->fw_options |=
 475                     __constant_cpu_to_le16(FWOPT_ENABLE_CRBDB);
 476
 477         init_fw_cb->fw_options &= __constant_cpu_to_le16(~FWOPT_TARGET_MODE);
 478
 479         /* Set bit for "serialize task mgmt" all other bits need to be zero */
 480         init_fw_cb->add_fw_options = 0;
 481         init_fw_cb->add_fw_options |=
 482             __constant_cpu_to_le16(SERIALIZE_TASK_MGMT);
 483
 484         if (qla4xxx_set_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)
 485                 != QLA_SUCCESS) {
 486                 DEBUG2(printk(KERN_WARNING
 487                               "scsi%ld: %s: Failed to set init_fw_ctrl_blk\n",
 488                               ha->host_no, __func__));
 489                 goto exit_init_fw_cb;
 490         }
 491
 492         if (qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0],
 493                 init_fw_cb, init_fw_cb_dma) != QLA_SUCCESS) {
 494                 DEBUG2(printk("scsi%ld: %s: Failed to update local ifcb\n",
 495                                 ha->host_no, __func__));
 496                 goto exit_init_fw_cb;
 497         }
 498         status = QLA_SUCCESS;
 499
 500 exit_init_fw_cb:
 501         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
 502                                 init_fw_cb, init_fw_cb_dma);
 503 exit_init_fw_cb_no_free:
 504         return status;
 505 }
 506
 507 /**
 508  * qla4xxx_get_dhcp_ip_address - gets HBA ip address via DHCP
 509  * @ha: Pointer to host adapter structure.
 510  **/
 511 int qla4xxx_get_dhcp_ip_address(struct scsi_qla_host * ha)
 512 {
 513         struct addr_ctrl_blk *init_fw_cb;
 514         dma_addr_t init_fw_cb_dma;
 515         uint32_t mbox_cmd[MBOX_REG_COUNT];
 516         uint32_t mbox_sts[MBOX_REG_COUNT];
 517
 518         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
 519                                         sizeof(struct addr_ctrl_blk),
 520                                         &init_fw_cb_dma, GFP_KERNEL);
 521         if (init_fw_cb == NULL) {
 522                 printk("scsi%ld: %s: Unable to alloc init_cb\n", ha->host_no,
 523                        __func__);
 524                 return QLA_ERROR;
 525         }
 526
 527         /* Get Initialize Firmware Control Block. */
 528         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
 529         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma) !=
 530             QLA_SUCCESS) {
 531                 DEBUG2(printk("scsi%ld: %s: Failed to get init_fw_ctrl_blk\n",
 532                               ha->host_no, __func__));
 533                 dma_free_coherent(&ha->pdev->dev,
 534                                   sizeof(struct addr_ctrl_blk),
 535                                   init_fw_cb, init_fw_cb_dma);
 536                 return QLA_ERROR;
 537         }
 538
 539         /* Save IP Address. */
 540         qla4xxx_update_local_ip(ha, init_fw_cb);
 541         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
 542                                 init_fw_cb, init_fw_cb_dma);
 543
 544         return QLA_SUCCESS;
 545 }
 546
 547 /**
 548  * qla4xxx_get_firmware_state - gets firmware state of HBA
 549  * @ha: Pointer to host adapter structure.
 550  **/
 551 int qla4xxx_get_firmware_state(struct scsi_qla_host * ha)
 552 {
 553         uint32_t mbox_cmd[MBOX_REG_COUNT];
 554         uint32_t mbox_sts[MBOX_REG_COUNT];
 555
 556         /* Get firmware version */
 557         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 558         memset(&mbox_sts, 0, sizeof(mbox_sts));
 559
 560         mbox_cmd[0] = MBOX_CMD_GET_FW_STATE;
 561
 562         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 4, &mbox_cmd[0], &mbox_sts[0]) !=
 563             QLA_SUCCESS) {
 564                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATE failed w/ "
 565                               "status %04X\n", ha->host_no, __func__,
 566                               mbox_sts[0]));
 567                 return QLA_ERROR;
 568         }
 569         ha->firmware_state = mbox_sts[1];
 570         ha->board_id = mbox_sts[2];
 571         ha->addl_fw_state = mbox_sts[3];
 572         DEBUG2(printk("scsi%ld: %s firmware_state=0x%x\n",
 573                       ha->host_no, __func__, ha->firmware_state);)
 574
 575         return QLA_SUCCESS;
 576 }
 577
 578 /**
 579  * qla4xxx_get_firmware_status - retrieves firmware status
 580  * @ha: Pointer to host adapter structure.
 581  **/
 582 int qla4xxx_get_firmware_status(struct scsi_qla_host * ha)
 583 {
 584         uint32_t mbox_cmd[MBOX_REG_COUNT];
 585         uint32_t mbox_sts[MBOX_REG_COUNT];
 586
 587         /* Get firmware version */
 588         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 589         memset(&mbox_sts, 0, sizeof(mbox_sts));
 590
 591         mbox_cmd[0] = MBOX_CMD_GET_FW_STATUS;
 592
 593         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 3, &mbox_cmd[0], &mbox_sts[0]) !=
 594             QLA_SUCCESS) {
 595                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATUS failed w/ "
 596                               "status %04X\n", ha->host_no, __func__,
 597                               mbox_sts[0]));
 598                 return QLA_ERROR;
 599         }
 600
 601         ql4_printk(KERN_INFO, ha, "%ld firmare IOCBs available (%d).\n",
 602             ha->host_no, mbox_sts[2]);
 603
 604         return QLA_SUCCESS;
 605 }
 606
 607 /**
 608  * qla4xxx_get_fwddb_entry - retrieves firmware ddb entry
 609  * @ha: Pointer to host adapter structure.
 610  * @fw_ddb_index: Firmware's device database index
 611  * @fw_ddb_entry: Pointer to firmware's device database entry structure
 612  * @num_valid_ddb_entries: Pointer to number of valid ddb entries
 613  * @next_ddb_index: Pointer to next valid device database index
 614  * @fw_ddb_device_state: Pointer to device state
 615  **/
 616 int qla4xxx_get_fwddb_entry(struct scsi_qla_host *ha,
 617                             uint16_t fw_ddb_index,
 618                             struct dev_db_entry *fw_ddb_entry,
 619                             dma_addr_t fw_ddb_entry_dma,
 620                             uint32_t *num_valid_ddb_entries,
 621                             uint32_t *next_ddb_index,
 622                             uint32_t *fw_ddb_device_state,
 623                             uint32_t *conn_err_detail,
 624                             uint16_t *tcp_source_port_num,
 625                             uint16_t *connection_id)
 626 {
 627         int status = QLA_ERROR;
 628         uint16_t options;
 629         uint32_t mbox_cmd[MBOX_REG_COUNT];
 630         uint32_t mbox_sts[MBOX_REG_COUNT];
 631
 632         /* Make sure the device index is valid */
 633         if (fw_ddb_index >= MAX_DDB_ENTRIES) {
 634                 DEBUG2(printk("scsi%ld: %s: ddb [%d] out of range.\n",
 635                               ha->host_no, __func__, fw_ddb_index));
 636                 goto exit_get_fwddb;
 637         }
 638         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 639         memset(&mbox_sts, 0, sizeof(mbox_sts));
 640
 641         mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY;
 642         mbox_cmd[1] = (uint32_t) fw_ddb_index;
 643         mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
 644         mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
 645         mbox_cmd[4] = sizeof(struct dev_db_entry);
 646
 647         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 7, &mbox_cmd[0], &mbox_sts[0]) ==
 648             QLA_ERROR) {
 649                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_DATABASE_ENTRY failed"
 650                               " with status 0x%04X\n", ha->host_no, __func__,
 651                               mbox_sts[0]));
 652                 goto exit_get_fwddb;
 653         }
 654         if (fw_ddb_index != mbox_sts[1]) {
 655                 DEBUG2(printk("scsi%ld: %s: ddb mismatch [%d] != [%d].\n",
 656                               ha->host_no, __func__, fw_ddb_index,
 657                               mbox_sts[1]));
 658                 goto exit_get_fwddb;
 659         }
 660         if (fw_ddb_entry) {
 661                 options = le16_to_cpu(fw_ddb_entry->options);
 662                 if (options & DDB_OPT_IPV6_DEVICE) {
 663                         ql4_printk(KERN_INFO, ha, "%s: DDB[%d] MB0 %04x Tot %d "
 664                                 "Next %d State %04x ConnErr %08x %pI6 "
 665                                 ":%04d \"%s\"\n", __func__, fw_ddb_index,
 666                                 mbox_sts[0], mbox_sts[2], mbox_sts[3],
 667                                 mbox_sts[4], mbox_sts[5],
 668                                 fw_ddb_entry->ip_addr,
 669                                 le16_to_cpu(fw_ddb_entry->port),
 670                                 fw_ddb_entry->iscsi_name);
 671                 } else {
 672                         ql4_printk(KERN_INFO, ha, "%s: DDB[%d] MB0 %04x Tot %d "
 673                                 "Next %d State %04x ConnErr %08x %pI4 "
 674                                 ":%04d \"%s\"\n", __func__, fw_ddb_index,
 675                                 mbox_sts[0], mbox_sts[2], mbox_sts[3],
 676                                 mbox_sts[4], mbox_sts[5],
 677                                 fw_ddb_entry->ip_addr,
 678                                 le16_to_cpu(fw_ddb_entry->port),
 679                                 fw_ddb_entry->iscsi_name);
 680                 }
 681         }
 682         if (num_valid_ddb_entries)
 683                 *num_valid_ddb_entries = mbox_sts[2];
 684         if (next_ddb_index)
 685                 *next_ddb_index = mbox_sts[3];
 686         if (fw_ddb_device_state)
 687                 *fw_ddb_device_state = mbox_sts[4];
 688
 689         /*
 690          * RA: This mailbox has been changed to pass connection error and
 691          * details.  Its true for ISP4010 as per Version E - Not sure when it
 692          * was changed.  Get the time2wait from the fw_dd_entry field :
 693          * default_time2wait which we call it as minTime2Wait DEV_DB_ENTRY
 694          * struct.
 695          */
 696         if (conn_err_detail)
 697                 *conn_err_detail = mbox_sts[5];
 698         if (tcp_source_port_num)
 699                 *tcp_source_port_num = (uint16_t) (mbox_sts[6] >> 16);
 700         if (connection_id)
 701                 *connection_id = (uint16_t) mbox_sts[6] & 0x00FF;
 702         status = QLA_SUCCESS;
 703
 704 exit_get_fwddb:
 705         return status;
 706 }
 707
 708 /**
 709  * qla4xxx_set_fwddb_entry - sets a ddb entry.
 710  * @ha: Pointer to host adapter structure.
 711  * @fw_ddb_index: Firmware's device database index
 712  * @fw_ddb_entry: Pointer to firmware's ddb entry structure, or NULL.
 713  *
 714  * This routine initializes or updates the adapter's device database
 715  * entry for the specified device. It also triggers a login for the
 716  * specified device. Therefore, it may also be used as a secondary
 717  * login routine when a NULL pointer is specified for the fw_ddb_entry.
 718  **/
 719 int qla4xxx_set_ddb_entry(struct scsi_qla_host * ha, uint16_t fw_ddb_index,
 720                           dma_addr_t fw_ddb_entry_dma)
 721 {
 722         uint32_t mbox_cmd[MBOX_REG_COUNT];
 723         uint32_t mbox_sts[MBOX_REG_COUNT];
 724         int status;
 725
 726         /* Do not wait for completion. The firmware will send us an
 727          * ASTS_DATABASE_CHANGED (0x8014) to notify us of the login status.
 728          */
 729         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 730         memset(&mbox_sts, 0, sizeof(mbox_sts));
 731
 732         mbox_cmd[0] = MBOX_CMD_SET_DATABASE_ENTRY;
 733         mbox_cmd[1] = (uint32_t) fw_ddb_index;
 734         mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
 735         mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
 736         mbox_cmd[4] = sizeof(struct dev_db_entry);
 737
 738         status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0],
 739             &mbox_sts[0]);
 740         DEBUG2(printk("scsi%ld: %s: status=%d mbx0=0x%x mbx4=0x%x\n",
 741             ha->host_no, __func__, status, mbox_sts[0], mbox_sts[4]);)
 742
 743         return status;
 744 }
 745
 746 /**
 747  * qla4xxx_get_crash_record - retrieves crash record.
 748  * @ha: Pointer to host adapter structure.
 749  *
 750  * This routine retrieves a crash record from the QLA4010 after an 8002h aen.
 751  **/
 752 void qla4xxx_get_crash_record(struct scsi_qla_host * ha)
 753 {
 754         uint32_t mbox_cmd[MBOX_REG_COUNT];
 755         uint32_t mbox_sts[MBOX_REG_COUNT];
 756         struct crash_record *crash_record = NULL;
 757         dma_addr_t crash_record_dma = 0;
 758         uint32_t crash_record_size = 0;
 759
 760         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 761         memset(&mbox_sts, 0, sizeof(mbox_cmd));
 762
 763         /* Get size of crash record. */
 764         mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
 765
 766         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 767             QLA_SUCCESS) {
 768                 DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve size!\n",
 769                               ha->host_no, __func__));
 770                 goto exit_get_crash_record;
 771         }
 772         crash_record_size = mbox_sts[4];
 773         if (crash_record_size == 0) {
 774                 DEBUG2(printk("scsi%ld: %s: ERROR: Crash record size is 0!\n",
 775                               ha->host_no, __func__));
 776                 goto exit_get_crash_record;
 777         }
 778
 779         /* Alloc Memory for Crash Record. */
 780         crash_record = dma_alloc_coherent(&ha->pdev->dev, crash_record_size,
 781                                           &crash_record_dma, GFP_KERNEL);
 782         if (crash_record == NULL)
 783                 goto exit_get_crash_record;
 784
 785         /* Get Crash Record. */
 786         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 787         memset(&mbox_sts, 0, sizeof(mbox_cmd));
 788
 789         mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
 790         mbox_cmd[2] = LSDW(crash_record_dma);
 791         mbox_cmd[3] = MSDW(crash_record_dma);
 792         mbox_cmd[4] = crash_record_size;
 793
 794         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 795             QLA_SUCCESS)
 796                 goto exit_get_crash_record;
 797
 798         /* Dump Crash Record. */
 799
 800 exit_get_crash_record:
 801         if (crash_record)
 802                 dma_free_coherent(&ha->pdev->dev, crash_record_size,
 803                                   crash_record, crash_record_dma);
 804 }
 805
 806 /**
 807  * qla4xxx_get_conn_event_log - retrieves connection event log
 808  * @ha: Pointer to host adapter structure.
 809  **/
 810 void qla4xxx_get_conn_event_log(struct scsi_qla_host * ha)
 811 {
 812         uint32_t mbox_cmd[MBOX_REG_COUNT];
 813         uint32_t mbox_sts[MBOX_REG_COUNT];
 814         struct conn_event_log_entry *event_log = NULL;
 815         dma_addr_t event_log_dma = 0;
 816         uint32_t event_log_size = 0;
 817         uint32_t num_valid_entries;
 818         uint32_t      oldest_entry = 0;
 819         uint32_t        max_event_log_entries;
 820         uint8_t         i;
 821
 822
 823         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 824         memset(&mbox_sts, 0, sizeof(mbox_cmd));
 825
 826         /* Get size of crash record. */
 827         mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
 828
 829         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 830             QLA_SUCCESS)
 831                 goto exit_get_event_log;
 832
 833         event_log_size = mbox_sts[4];
 834         if (event_log_size == 0)
 835                 goto exit_get_event_log;
 836
 837         /* Alloc Memory for Crash Record. */
 838         event_log = dma_alloc_coherent(&ha->pdev->dev, event_log_size,
 839                                        &event_log_dma, GFP_KERNEL);
 840         if (event_log == NULL)
 841                 goto exit_get_event_log;
 842
 843         /* Get Crash Record. */
 844         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 845         memset(&mbox_sts, 0, sizeof(mbox_cmd));
 846
 847         mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
 848         mbox_cmd[2] = LSDW(event_log_dma);
 849         mbox_cmd[3] = MSDW(event_log_dma);
 850
 851         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 852             QLA_SUCCESS) {
 853                 DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve event "
 854                               "log!\n", ha->host_no, __func__));
 855                 goto exit_get_event_log;
 856         }
 857
 858         /* Dump Event Log. */
 859         num_valid_entries = mbox_sts[1];
 860
 861         max_event_log_entries = event_log_size /
 862                 sizeof(struct conn_event_log_entry);
 863
 864         if (num_valid_entries > max_event_log_entries)
 865                 oldest_entry = num_valid_entries % max_event_log_entries;
 866
 867         DEBUG3(printk("scsi%ld: Connection Event Log Dump (%d entries):\n",
 868                       ha->host_no, num_valid_entries));
 869
 870         if (ql4xextended_error_logging == 3) {
 871                 if (oldest_entry == 0) {
 872                         /* Circular Buffer has not wrapped around */
 873                         for (i=0; i < num_valid_entries; i++) {
 874                                 qla4xxx_dump_buffer((uint8_t *)event_log+
 875                                                     (i*sizeof(*event_log)),
 876                                                     sizeof(*event_log));
 877                         }
 878                 }
 879                 else {
 880                         /* Circular Buffer has wrapped around -
 881                          * display accordingly*/
 882                         for (i=oldest_entry; i < max_event_log_entries; i++) {
 883                                 qla4xxx_dump_buffer((uint8_t *)event_log+
 884                                                     (i*sizeof(*event_log)),
 885                                                     sizeof(*event_log));
 886                         }
 887                         for (i=0; i < oldest_entry; i++) {
 888                                 qla4xxx_dump_buffer((uint8_t *)event_log+
 889                                                     (i*sizeof(*event_log)),
 890                                                     sizeof(*event_log));
 891                         }
 892                 }
 893         }
 894
 895 exit_get_event_log:
 896         if (event_log)
 897                 dma_free_coherent(&ha->pdev->dev, event_log_size, event_log,
 898                                   event_log_dma);
 899 }
 900
 901 /**
 902  * qla4xxx_abort_task - issues Abort Task
 903  * @ha: Pointer to host adapter structure.
 904  * @srb: Pointer to srb entry
 905  *
 906  * This routine performs a LUN RESET on the specified target/lun.
 907  * The caller must ensure that the ddb_entry and lun_entry pointers
 908  * are valid before calling this routine.
 909  **/
 910 int qla4xxx_abort_task(struct scsi_qla_host *ha, struct srb *srb)
 911 {
 912         uint32_t mbox_cmd[MBOX_REG_COUNT];
 913         uint32_t mbox_sts[MBOX_REG_COUNT];
 914         struct scsi_cmnd *cmd = srb->cmd;
 915         int status = QLA_SUCCESS;
 916         unsigned long flags = 0;
 917         uint32_t index;
 918
 919         /*
 920          * Send abort task command to ISP, so that the ISP will return
 921          * request with ABORT status
 922          */
 923         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 924         memset(&mbox_sts, 0, sizeof(mbox_sts));
 925
 926         spin_lock_irqsave(&ha->hardware_lock, flags);
 927         index = (unsigned long)(unsigned char *)cmd->host_scribble;
 928         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 929
 930         /* Firmware already posted completion on response queue */
 931         if (index == MAX_SRBS)
 932                 return status;
 933
 934         mbox_cmd[0] = MBOX_CMD_ABORT_TASK;
 935         mbox_cmd[1] = srb->ddb->fw_ddb_index;
 936         mbox_cmd[2] = index;
 937         /* Immediate Command Enable */
 938         mbox_cmd[5] = 0x01;
 939
 940         qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0],
 941             &mbox_sts[0]);
 942         if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE) {
 943                 status = QLA_ERROR;
 944
 945                 DEBUG2(printk(KERN_WARNING "scsi%ld:%d:%d: abort task FAILED: "
 946                     "mbx0=%04X, mb1=%04X, mb2=%04X, mb3=%04X, mb4=%04X\n",
 947                     ha->host_no, cmd->device->id, cmd->device->lun, mbox_sts[0],
 948                     mbox_sts[1], mbox_sts[2], mbox_sts[3], mbox_sts[4]));
 949         }
 950
 951         return status;
 952 }
 953
 954 /**
 955  * qla4xxx_reset_lun - issues LUN Reset
 956  * @ha: Pointer to host adapter structure.
 957  * @ddb_entry: Pointer to device database entry
 958  * @lun: lun number
 959  *
 960  * This routine performs a LUN RESET on the specified target/lun.
 961  * The caller must ensure that the ddb_entry and lun_entry pointers
 962  * are valid before calling this routine.
 963  **/
 964 int qla4xxx_reset_lun(struct scsi_qla_host * ha, struct ddb_entry * ddb_entry,
 965                       int lun)
 966 {
 967         uint32_t mbox_cmd[MBOX_REG_COUNT];
 968         uint32_t mbox_sts[MBOX_REG_COUNT];
 969         int status = QLA_SUCCESS;
 970
 971         DEBUG2(printk("scsi%ld:%d:%d: lun reset issued\n", ha->host_no,
 972                       ddb_entry->fw_ddb_index, lun));
 973
 974         /*
 975          * Send lun reset command to ISP, so that the ISP will return all
 976          * outstanding requests with RESET status
 977          */
 978         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 979         memset(&mbox_sts, 0, sizeof(mbox_sts));
 980
 981         mbox_cmd[0] = MBOX_CMD_LUN_RESET;
 982         mbox_cmd[1] = ddb_entry->fw_ddb_index;
 983         mbox_cmd[2] = lun << 8;
 984         mbox_cmd[5] = 0x01;     /* Immediate Command Enable */
 985
 986         qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], &mbox_sts[0]);
 987         if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
 988             mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
 989                 status = QLA_ERROR;
 990
 991         return status;
 992 }
 993
 994 /**
 995  * qla4xxx_reset_target - issues target Reset
 996  * @ha: Pointer to host adapter structure.
 997  * @db_entry: Pointer to device database entry
 998  * @un_entry: Pointer to lun entry structure
 999  *
1000  * This routine performs a TARGET RESET on the specified target.
1001  * The caller must ensure that the ddb_entry pointers
1002  * are valid before calling this routine.
1003  **/
1004 int qla4xxx_reset_target(struct scsi_qla_host *ha,
1005                          struct ddb_entry *ddb_entry)
1006 {
1007         uint32_t mbox_cmd[MBOX_REG_COUNT];
1008         uint32_t mbox_sts[MBOX_REG_COUNT];
1009         int status = QLA_SUCCESS;
1010
1011         DEBUG2(printk("scsi%ld:%d: target reset issued\n", ha->host_no,
1012                       ddb_entry->fw_ddb_index));
1013
1014         /*
1015          * Send target reset command to ISP, so that the ISP will return all
1016          * outstanding requests with RESET status
1017          */
1018         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1019         memset(&mbox_sts, 0, sizeof(mbox_sts));
1020
1021         mbox_cmd[0] = MBOX_CMD_TARGET_WARM_RESET;
1022         mbox_cmd[1] = ddb_entry->fw_ddb_index;
1023         mbox_cmd[5] = 0x01;     /* Immediate Command Enable */
1024
1025         qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0],
1026                                 &mbox_sts[0]);
1027         if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
1028             mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
1029                 status = QLA_ERROR;
1030
1031         return status;
1032 }
1033
1034 int qla4xxx_get_flash(struct scsi_qla_host * ha, dma_addr_t dma_addr,
1035                       uint32_t offset, uint32_t len)
1036 {
1037         uint32_t mbox_cmd[MBOX_REG_COUNT];
1038         uint32_t mbox_sts[MBOX_REG_COUNT];
1039
1040         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1041         memset(&mbox_sts, 0, sizeof(mbox_sts));
1042
1043         mbox_cmd[0] = MBOX_CMD_READ_FLASH;
1044         mbox_cmd[1] = LSDW(dma_addr);
1045         mbox_cmd[2] = MSDW(dma_addr);
1046         mbox_cmd[3] = offset;
1047         mbox_cmd[4] = len;
1048
1049         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 2, &mbox_cmd[0], &mbox_sts[0]) !=
1050             QLA_SUCCESS) {
1051                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_READ_FLASH, failed w/ "
1052                     "status %04X %04X, offset %08x, len %08x\n", ha->host_no,
1053                     __func__, mbox_sts[0], mbox_sts[1], offset, len));
1054                 return QLA_ERROR;
1055         }
1056         return QLA_SUCCESS;
1057 }
1058
1059 /**
1060  * qla4xxx_get_fw_version - gets firmware version
1061  * @ha: Pointer to host adapter structure.
1062  *
1063  * Retrieves the firmware version on HBA. In QLA4010, mailboxes 2 & 3 may
1064  * hold an address for data.  Make sure that we write 0 to those mailboxes,
1065  * if unused.
1066  **/
1067 int qla4xxx_get_fw_version(struct scsi_qla_host * ha)
1068 {
1069         uint32_t mbox_cmd[MBOX_REG_COUNT];
1070         uint32_t mbox_sts[MBOX_REG_COUNT];
1071
1072         /* Get firmware version. */
1073         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1074         memset(&mbox_sts, 0, sizeof(mbox_sts));
1075
1076         mbox_cmd[0] = MBOX_CMD_ABOUT_FW;
1077
1078         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
1079             QLA_SUCCESS) {
1080                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_ABOUT_FW failed w/ "
1081                     "status %04X\n", ha->host_no, __func__, mbox_sts[0]));
1082                 return QLA_ERROR;
1083         }
1084
1085         /* Save firmware version information. */
1086         ha->firmware_version[0] = mbox_sts[1];
1087         ha->firmware_version[1] = mbox_sts[2];
1088         ha->patch_number = mbox_sts[3];
1089         ha->build_number = mbox_sts[4];
1090
1091         return QLA_SUCCESS;
1092 }
1093
1094 static int qla4xxx_get_default_ddb(struct scsi_qla_host *ha,
1095                                    dma_addr_t dma_addr)
1096 {
1097         uint32_t mbox_cmd[MBOX_REG_COUNT];
1098         uint32_t mbox_sts[MBOX_REG_COUNT];
1099
1100         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1101         memset(&mbox_sts, 0, sizeof(mbox_sts));
1102
1103         mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY_DEFAULTS;
1104         mbox_cmd[2] = LSDW(dma_addr);
1105         mbox_cmd[3] = MSDW(dma_addr);
1106
1107         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], &mbox_sts[0]) !=
1108             QLA_SUCCESS) {
1109                 DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
1110                      ha->host_no, __func__, mbox_sts[0]));
1111                 return QLA_ERROR;
1112         }
1113         return QLA_SUCCESS;
1114 }
1115
1116 static int qla4xxx_req_ddb_entry(struct scsi_qla_host *ha, uint32_t *ddb_index)
1117 {
1118         uint32_t mbox_cmd[MBOX_REG_COUNT];
1119         uint32_t mbox_sts[MBOX_REG_COUNT];
1120
1121         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1122         memset(&mbox_sts, 0, sizeof(mbox_sts));
1123
1124         mbox_cmd[0] = MBOX_CMD_REQUEST_DATABASE_ENTRY;
1125         mbox_cmd[1] = MAX_PRST_DEV_DB_ENTRIES;
1126
1127         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 3, &mbox_cmd[0], &mbox_sts[0]) !=
1128             QLA_SUCCESS) {
1129                 if (mbox_sts[0] == MBOX_STS_COMMAND_ERROR) {
1130                         *ddb_index = mbox_sts[2];
1131                 } else {
1132                         DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
1133                              ha->host_no, __func__, mbox_sts[0]));
1134                         return QLA_ERROR;
1135                 }
1136         } else {
1137                 *ddb_index = MAX_PRST_DEV_DB_ENTRIES;
1138         }
1139
1140         return QLA_SUCCESS;
1141 }
1142
1143
1144 int qla4xxx_send_tgts(struct scsi_qla_host *ha, char *ip, uint16_t port)
1145 {
1146         struct dev_db_entry *fw_ddb_entry;
1147         dma_addr_t fw_ddb_entry_dma;
1148         uint32_t ddb_index;
1149         int ret_val = QLA_SUCCESS;
1150
1151
1152         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
1153                                           sizeof(*fw_ddb_entry),
1154                                           &fw_ddb_entry_dma, GFP_KERNEL);
1155         if (!fw_ddb_entry) {
1156                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
1157                               ha->host_no, __func__));
1158                 ret_val = QLA_ERROR;
1159                 goto exit_send_tgts_no_free;
1160         }
1161
1162         ret_val = qla4xxx_get_default_ddb(ha, fw_ddb_entry_dma);
1163         if (ret_val != QLA_SUCCESS)
1164                 goto exit_send_tgts;
1165
1166         ret_val = qla4xxx_req_ddb_entry(ha, &ddb_index);
1167         if (ret_val != QLA_SUCCESS)
1168                 goto exit_send_tgts;
1169
1170         memset(fw_ddb_entry->iscsi_alias, 0,
1171                sizeof(fw_ddb_entry->iscsi_alias));
1172
1173         memset(fw_ddb_entry->iscsi_name, 0,
1174                sizeof(fw_ddb_entry->iscsi_name));
1175
1176         memset(fw_ddb_entry->ip_addr, 0, sizeof(fw_ddb_entry->ip_addr));
1177         memset(fw_ddb_entry->tgt_addr, 0,
1178                sizeof(fw_ddb_entry->tgt_addr));
1179
1180         fw_ddb_entry->options = (DDB_OPT_DISC_SESSION | DDB_OPT_TARGET);
1181         fw_ddb_entry->port = cpu_to_le16(ntohs(port));
1182
1183         fw_ddb_entry->ip_addr[0] = *ip;
1184         fw_ddb_entry->ip_addr[1] = *(ip + 1);
1185         fw_ddb_entry->ip_addr[2] = *(ip + 2);
1186         fw_ddb_entry->ip_addr[3] = *(ip + 3);
1187
1188         ret_val = qla4xxx_set_ddb_entry(ha, ddb_index, fw_ddb_entry_dma);
1189
1190 exit_send_tgts:
1191         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1192                           fw_ddb_entry, fw_ddb_entry_dma);
1193 exit_send_tgts_no_free:
1194         return ret_val;
1195 }
1196