drivers/scsi/qla4xxx/ql4_mbx.c

   1 /*
   2  * QLogic iSCSI HBA Driver
   3  * Copyright (c)  2003-2006 QLogic Corporation
   4  *
   5  * See LICENSE.qla4xxx for copyright and licensing details.
   6  */
   7
   8 #include "ql4_def.h"
   9 #include "ql4_glbl.h"
  10 #include "ql4_dbg.h"
  11 #include "ql4_inline.h"
  12
  13
  14 /**
  15  * qla4xxx_mailbox_command - issues mailbox commands
  16  * @ha: Pointer to host adapter structure.
  17  * @inCount: number of mailbox registers to load.
  18  * @outCount: number of mailbox registers to return.
  19  * @mbx_cmd: data pointer for mailbox in registers.
  20  * @mbx_sts: data pointer for mailbox out registers.
  21  *
  22  * This routine isssue mailbox commands and waits for completion.
  23  * If outCount is 0, this routine completes successfully WITHOUT waiting
  24  * for the mailbox command to complete.
  25  **/
  26 int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount,
  27                             uint8_t outCount, uint32_t *mbx_cmd,
  28                             uint32_t *mbx_sts)
  29 {
  30         int status = QLA_ERROR;
  31         uint8_t i;
  32         u_long wait_count;
  33         uint32_t intr_status;
  34         unsigned long flags = 0;
  35
  36         /* Make sure that pointers are valid */
  37         if (!mbx_cmd || !mbx_sts) {
  38                 DEBUG2(printk("scsi%ld: %s: Invalid mbx_cmd or mbx_sts "
  39                               "pointer\n", ha->host_no, __func__));
  40                 return status;
  41         }
  42
  43         if (is_qla8022(ha) &&
  44             test_bit(AF_FW_RECOVERY, &ha->flags)) {
  45                 DEBUG2(ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: prematurely "
  46                     "completing mbx cmd as firmware recovery detected\n",
  47                     ha->host_no, __func__));
  48                 return status;
  49         }
  50
  51         if ((is_aer_supported(ha)) &&
  52             (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))) {
  53                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Perm failure on EEH, "
  54                     "timeout MBX Exiting.\n", ha->host_no, __func__));
  55                 return status;
  56         }
  57
  58         /* Mailbox code active */
  59         wait_count = MBOX_TOV * 100;
  60
  61         while (wait_count--) {
  62                 mutex_lock(&ha->mbox_sem);
  63                 if (!test_bit(AF_MBOX_COMMAND, &ha->flags)) {
  64                         set_bit(AF_MBOX_COMMAND, &ha->flags);
  65                         mutex_unlock(&ha->mbox_sem);
  66                         break;
  67                 }
  68                 mutex_unlock(&ha->mbox_sem);
  69                 if (!wait_count) {
  70                         DEBUG2(printk("scsi%ld: %s: mbox_sem failed\n",
  71                                 ha->host_no, __func__));
  72                         return status;
  73                 }
  74                 msleep(10);
  75         }
  76
  77         /* To prevent overwriting mailbox registers for a command that has
  78          * not yet been serviced, check to see if an active command
  79          * (AEN, IOCB, etc.) is interrupting, then service it.
  80          * -----------------------------------------------------------------
  81          */
  82         spin_lock_irqsave(&ha->hardware_lock, flags);
  83
  84         if (is_qla8022(ha)) {
  85                 intr_status = readl(&ha->qla4_8xxx_reg->host_int);
  86                 if (intr_status & ISRX_82XX_RISC_INT) {
  87                         /* Service existing interrupt */
  88                         DEBUG2(printk("scsi%ld: %s: "
  89                             "servicing existing interrupt\n",
  90                             ha->host_no, __func__));
  91                         intr_status = readl(&ha->qla4_8xxx_reg->host_status);
  92                         ha->isp_ops->interrupt_service_routine(ha, intr_status);
  93                         clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
  94                         if (test_bit(AF_INTERRUPTS_ON, &ha->flags) &&
  95                             test_bit(AF_INTx_ENABLED, &ha->flags))
  96                                 qla4_8xxx_wr_32(ha,
  97                                     ha->nx_legacy_intr.tgt_mask_reg,
  98                                     0xfbff);
  99                 }
 100         } else {
 101                 intr_status = readl(&ha->reg->ctrl_status);
 102                 if (intr_status & CSR_SCSI_PROCESSOR_INTR) {
 103                         /* Service existing interrupt */
 104                         ha->isp_ops->interrupt_service_routine(ha, intr_status);
 105                         clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
 106                 }
 107         }
 108
 109         ha->mbox_status_count = outCount;
 110         for (i = 0; i < outCount; i++)
 111                 ha->mbox_status[i] = 0;
 112
 113         if (is_qla8022(ha)) {
 114                 /* Load all mailbox registers, except mailbox 0. */
 115                 DEBUG5(
 116                     printk("scsi%ld: %s: Cmd ", ha->host_no, __func__);
 117                     for (i = 0; i < inCount; i++)
 118                         printk("mb%d=%04x ", i, mbx_cmd[i]);
 119                     printk("\n"));
 120
 121                 for (i = 1; i < inCount; i++)
 122                         writel(mbx_cmd[i], &ha->qla4_8xxx_reg->mailbox_in[i]);
 123                 writel(mbx_cmd[0], &ha->qla4_8xxx_reg->mailbox_in[0]);
 124                 readl(&ha->qla4_8xxx_reg->mailbox_in[0]);
 125                 writel(HINT_MBX_INT_PENDING, &ha->qla4_8xxx_reg->hint);
 126         } else {
 127                 /* Load all mailbox registers, except mailbox 0. */
 128                 for (i = 1; i < inCount; i++)
 129                         writel(mbx_cmd[i], &ha->reg->mailbox[i]);
 130
 131                 /* Wakeup firmware  */
 132                 writel(mbx_cmd[0], &ha->reg->mailbox[0]);
 133                 readl(&ha->reg->mailbox[0]);
 134                 writel(set_rmask(CSR_INTR_RISC), &ha->reg->ctrl_status);
 135                 readl(&ha->reg->ctrl_status);
 136         }
 137
 138         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 139
 140         /* Wait for completion */
 141
 142         /*
 143          * If we don't want status, don't wait for the mailbox command to
 144          * complete.  For example, MBOX_CMD_RESET_FW doesn't return status,
 145          * you must poll the inbound Interrupt Mask for completion.
 146          */
 147         if (outCount == 0) {
 148                 status = QLA_SUCCESS;
 149                 goto mbox_exit;
 150         }
 151
 152         /*
 153          * Wait for completion: Poll or completion queue
 154          */
 155         if (test_bit(AF_IRQ_ATTACHED, &ha->flags) &&
 156             test_bit(AF_INTERRUPTS_ON, &ha->flags) &&
 157             test_bit(AF_ONLINE, &ha->flags) &&
 158             !test_bit(AF_HBA_GOING_AWAY, &ha->flags)) {
 159                 /* Do not poll for completion. Use completion queue */
 160                 set_bit(AF_MBOX_COMMAND_NOPOLL, &ha->flags);
 161                 wait_for_completion_timeout(&ha->mbx_intr_comp, MBOX_TOV * HZ);
 162                 clear_bit(AF_MBOX_COMMAND_NOPOLL, &ha->flags);
 163         } else {
 164                 /* Poll for command to complete */
 165                 wait_count = jiffies + MBOX_TOV * HZ;
 166                 while (test_bit(AF_MBOX_COMMAND_DONE, &ha->flags) == 0) {
 167                         if (time_after_eq(jiffies, wait_count))
 168                                 break;
 169
 170                         /*
 171                          * Service the interrupt.
 172                          * The ISR will save the mailbox status registers
 173                          * to a temporary storage location in the adapter
 174                          * structure.
 175                          */
 176
 177                         spin_lock_irqsave(&ha->hardware_lock, flags);
 178                         if (is_qla8022(ha)) {
 179                                 intr_status =
 180                                     readl(&ha->qla4_8xxx_reg->host_int);
 181                                 if (intr_status & ISRX_82XX_RISC_INT) {
 182                                         ha->mbox_status_count = outCount;
 183                                         intr_status =
 184                                          readl(&ha->qla4_8xxx_reg->host_status);
 185                                         ha->isp_ops->interrupt_service_routine(
 186                                             ha, intr_status);
 187                                         if (test_bit(AF_INTERRUPTS_ON,
 188                                             &ha->flags) &&
 189                                             test_bit(AF_INTx_ENABLED,
 190                                             &ha->flags))
 191                                                 qla4_8xxx_wr_32(ha,
 192                                                 ha->nx_legacy_intr.tgt_mask_reg,
 193                                                 0xfbff);
 194                                 }
 195                         } else {
 196                                 intr_status = readl(&ha->reg->ctrl_status);
 197                                 if (intr_status & INTR_PENDING) {
 198                                         /*
 199                                          * Service the interrupt.
 200                                          * The ISR will save the mailbox status
 201                                          * registers to a temporary storage
 202                                          * location in the adapter structure.
 203                                          */
 204                                         ha->mbox_status_count = outCount;
 205                                         ha->isp_ops->interrupt_service_routine(
 206                                             ha, intr_status);
 207                                 }
 208                         }
 209                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 210                         msleep(10);
 211                 }
 212         }
 213
 214         /* Check for mailbox timeout. */
 215         if (!test_bit(AF_MBOX_COMMAND_DONE, &ha->flags)) {
 216                 if (is_qla8022(ha) &&
 217                     test_bit(AF_FW_RECOVERY, &ha->flags)) {
 218                         DEBUG2(ql4_printk(KERN_INFO, ha,
 219                             "scsi%ld: %s: prematurely completing mbx cmd as "
 220                             "firmware recovery detected\n",
 221                             ha->host_no, __func__));
 222                         goto mbox_exit;
 223                 }
 224                 DEBUG2(printk("scsi%ld: Mailbox Cmd 0x%08X timed out ...,"
 225                               " Scheduling Adapter Reset\n", ha->host_no,
 226                               mbx_cmd[0]));
 227                 ha->mailbox_timeout_count++;
 228                 mbx_sts[0] = (-1);
 229                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
 230                 goto mbox_exit;
 231         }
 232
 233         /*
 234          * Copy the mailbox out registers to the caller's mailbox in/out
 235          * structure.
 236          */
 237         spin_lock_irqsave(&ha->hardware_lock, flags);
 238         for (i = 0; i < outCount; i++)
 239                 mbx_sts[i] = ha->mbox_status[i];
 240
 241         /* Set return status and error flags (if applicable). */
 242         switch (ha->mbox_status[0]) {
 243         case MBOX_STS_COMMAND_COMPLETE:
 244                 status = QLA_SUCCESS;
 245                 break;
 246
 247         case MBOX_STS_INTERMEDIATE_COMPLETION:
 248                 status = QLA_SUCCESS;
 249                 break;
 250
 251         case MBOX_STS_BUSY:
 252                 DEBUG2( printk("scsi%ld: %s: Cmd = %08X, ISP BUSY\n",
 253                                ha->host_no, __func__, mbx_cmd[0]));
 254                 ha->mailbox_timeout_count++;
 255                 break;
 256
 257         default:
 258                 DEBUG2(printk("scsi%ld: %s: **** FAILED, cmd = %08X, "
 259                               "sts = %08X ****\n", ha->host_no, __func__,
 260                               mbx_cmd[0], mbx_sts[0]));
 261                 break;
 262         }
 263         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 264
 265 mbox_exit:
 266         mutex_lock(&ha->mbox_sem);
 267         clear_bit(AF_MBOX_COMMAND, &ha->flags);
 268         mutex_unlock(&ha->mbox_sem);
 269         clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
 270
 271         return status;
 272 }
 273
 274 void qla4xxx_mailbox_premature_completion(struct scsi_qla_host *ha)
 275 {
 276         set_bit(AF_FW_RECOVERY, &ha->flags);
 277         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: set FW RECOVERY!\n",
 278             ha->host_no, __func__);
 279
 280         if (test_bit(AF_MBOX_COMMAND, &ha->flags)) {
 281                 if (test_bit(AF_MBOX_COMMAND_NOPOLL, &ha->flags)) {
 282                         complete(&ha->mbx_intr_comp);
 283                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Due to fw "
 284                             "recovery, doing premature completion of "
 285                             "mbx cmd\n", ha->host_no, __func__);
 286
 287                 } else {
 288                         set_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
 289                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Due to fw "
 290                             "recovery, doing premature completion of "
 291                             "polling mbx cmd\n", ha->host_no, __func__);
 292                 }
 293         }
 294 }
 295
 296 static uint8_t
 297 qla4xxx_set_ifcb(struct scsi_qla_host *ha, uint32_t *mbox_cmd,
 298                  uint32_t *mbox_sts, dma_addr_t init_fw_cb_dma)
 299 {
 300         memset(mbox_cmd, 0, sizeof(mbox_cmd[0]) * MBOX_REG_COUNT);
 301         memset(mbox_sts, 0, sizeof(mbox_sts[0]) * MBOX_REG_COUNT);
 302         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         /* Save Command Line Paramater info */
 411         ha->discovery_wait = ql4xdiscoverywait;
 412
 413         if (ha->acb_version == ACB_SUPPORTED) {
 414                 ha->ipv6_options = init_fw_cb->ipv6_opts;
 415                 ha->ipv6_addl_options = init_fw_cb->ipv6_addtl_opts;
 416         }
 417         qla4xxx_update_local_ip(ha, init_fw_cb);
 418
 419         return QLA_SUCCESS;
 420 }
 421
 422 /**
 423  * qla4xxx_initialize_fw_cb - initializes firmware control block.
 424  * @ha: Pointer to host adapter structure.
 425  **/
 426 int qla4xxx_initialize_fw_cb(struct scsi_qla_host * ha)
 427 {
 428         struct addr_ctrl_blk *init_fw_cb;
 429         dma_addr_t init_fw_cb_dma;
 430         uint32_t mbox_cmd[MBOX_REG_COUNT];
 431         uint32_t mbox_sts[MBOX_REG_COUNT];
 432         int status = QLA_ERROR;
 433
 434         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
 435                                         sizeof(struct addr_ctrl_blk),
 436                                         &init_fw_cb_dma, GFP_KERNEL);
 437         if (init_fw_cb == NULL) {
 438                 DEBUG2(printk("scsi%ld: %s: Unable to alloc init_cb\n",
 439                               ha->host_no, __func__));
 440                 goto exit_init_fw_cb_no_free;
 441         }
 442         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
 443
 444         /* Get Initialize Firmware Control Block. */
 445         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 446         memset(&mbox_sts, 0, sizeof(mbox_sts));
 447
 448         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma) !=
 449             QLA_SUCCESS) {
 450                 dma_free_coherent(&ha->pdev->dev,
 451                                   sizeof(struct addr_ctrl_blk),
 452                                   init_fw_cb, init_fw_cb_dma);
 453                 goto exit_init_fw_cb;
 454         }
 455
 456         /* Initialize request and response queues. */
 457         qla4xxx_init_rings(ha);
 458
 459         /* Fill in the request and response queue information. */
 460         init_fw_cb->rqq_consumer_idx = cpu_to_le16(ha->request_out);
 461         init_fw_cb->compq_producer_idx = cpu_to_le16(ha->response_in);
 462         init_fw_cb->rqq_len = __constant_cpu_to_le16(REQUEST_QUEUE_DEPTH);
 463         init_fw_cb->compq_len = __constant_cpu_to_le16(RESPONSE_QUEUE_DEPTH);
 464         init_fw_cb->rqq_addr_lo = cpu_to_le32(LSDW(ha->request_dma));
 465         init_fw_cb->rqq_addr_hi = cpu_to_le32(MSDW(ha->request_dma));
 466         init_fw_cb->compq_addr_lo = cpu_to_le32(LSDW(ha->response_dma));
 467         init_fw_cb->compq_addr_hi = cpu_to_le32(MSDW(ha->response_dma));
 468         init_fw_cb->shdwreg_addr_lo = cpu_to_le32(LSDW(ha->shadow_regs_dma));
 469         init_fw_cb->shdwreg_addr_hi = cpu_to_le32(MSDW(ha->shadow_regs_dma));
 470
 471         /* Set up required options. */
 472         init_fw_cb->fw_options |=
 473                 __constant_cpu_to_le16(FWOPT_SESSION_MODE |
 474                                        FWOPT_INITIATOR_MODE);
 475         init_fw_cb->fw_options &= __constant_cpu_to_le16(~FWOPT_TARGET_MODE);
 476
 477         if (qla4xxx_set_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)
 478                 != QLA_SUCCESS) {
 479                 DEBUG2(printk(KERN_WARNING
 480                               "scsi%ld: %s: Failed to set init_fw_ctrl_blk\n",
 481                               ha->host_no, __func__));
 482                 goto exit_init_fw_cb;
 483         }
 484
 485         if (qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0],
 486                 init_fw_cb, init_fw_cb_dma) != QLA_SUCCESS) {
 487                 DEBUG2(printk("scsi%ld: %s: Failed to update local ifcb\n",
 488                                 ha->host_no, __func__));
 489                 goto exit_init_fw_cb;
 490         }
 491         status = QLA_SUCCESS;
 492
 493 exit_init_fw_cb:
 494         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
 495                                 init_fw_cb, init_fw_cb_dma);
 496 exit_init_fw_cb_no_free:
 497         return status;
 498 }
 499
 500 /**
 501  * qla4xxx_get_dhcp_ip_address - gets HBA ip address via DHCP
 502  * @ha: Pointer to host adapter structure.
 503  **/
 504 int qla4xxx_get_dhcp_ip_address(struct scsi_qla_host * ha)
 505 {
 506         struct addr_ctrl_blk *init_fw_cb;
 507         dma_addr_t init_fw_cb_dma;
 508         uint32_t mbox_cmd[MBOX_REG_COUNT];
 509         uint32_t mbox_sts[MBOX_REG_COUNT];
 510
 511         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
 512                                         sizeof(struct addr_ctrl_blk),
 513                                         &init_fw_cb_dma, GFP_KERNEL);
 514         if (init_fw_cb == NULL) {
 515                 printk("scsi%ld: %s: Unable to alloc init_cb\n", ha->host_no,
 516                        __func__);
 517                 return QLA_ERROR;
 518         }
 519
 520         /* Get Initialize Firmware Control Block. */
 521         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
 522         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma) !=
 523             QLA_SUCCESS) {
 524                 DEBUG2(printk("scsi%ld: %s: Failed to get init_fw_ctrl_blk\n",
 525                               ha->host_no, __func__));
 526                 dma_free_coherent(&ha->pdev->dev,
 527                                   sizeof(struct addr_ctrl_blk),
 528                                   init_fw_cb, init_fw_cb_dma);
 529                 return QLA_ERROR;
 530         }
 531
 532         /* Save IP Address. */
 533         qla4xxx_update_local_ip(ha, init_fw_cb);
 534         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
 535                                 init_fw_cb, init_fw_cb_dma);
 536
 537         return QLA_SUCCESS;
 538 }
 539
 540 /**
 541  * qla4xxx_get_firmware_state - gets firmware state of HBA
 542  * @ha: Pointer to host adapter structure.
 543  **/
 544 int qla4xxx_get_firmware_state(struct scsi_qla_host * ha)
 545 {
 546         uint32_t mbox_cmd[MBOX_REG_COUNT];
 547         uint32_t mbox_sts[MBOX_REG_COUNT];
 548
 549         /* Get firmware version */
 550         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 551         memset(&mbox_sts, 0, sizeof(mbox_sts));
 552
 553         mbox_cmd[0] = MBOX_CMD_GET_FW_STATE;
 554
 555         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 4, &mbox_cmd[0], &mbox_sts[0]) !=
 556             QLA_SUCCESS) {
 557                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATE failed w/ "
 558                               "status %04X\n", ha->host_no, __func__,
 559                               mbox_sts[0]));
 560                 return QLA_ERROR;
 561         }
 562         ha->firmware_state = mbox_sts[1];
 563         ha->board_id = mbox_sts[2];
 564         ha->addl_fw_state = mbox_sts[3];
 565         DEBUG2(printk("scsi%ld: %s firmware_state=0x%x\n",
 566                       ha->host_no, __func__, ha->firmware_state);)
 567
 568         return QLA_SUCCESS;
 569 }
 570
 571 /**
 572  * qla4xxx_get_firmware_status - retrieves firmware status
 573  * @ha: Pointer to host adapter structure.
 574  **/
 575 int qla4xxx_get_firmware_status(struct scsi_qla_host * ha)
 576 {
 577         uint32_t mbox_cmd[MBOX_REG_COUNT];
 578         uint32_t mbox_sts[MBOX_REG_COUNT];
 579
 580         /* Get firmware version */
 581         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 582         memset(&mbox_sts, 0, sizeof(mbox_sts));
 583
 584         mbox_cmd[0] = MBOX_CMD_GET_FW_STATUS;
 585
 586         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 3, &mbox_cmd[0], &mbox_sts[0]) !=
 587             QLA_SUCCESS) {
 588                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATUS failed w/ "
 589                               "status %04X\n", ha->host_no, __func__,
 590                               mbox_sts[0]));
 591                 return QLA_ERROR;
 592         }
 593
 594         ql4_printk(KERN_INFO, ha, "%ld firmare IOCBs available (%d).\n",
 595             ha->host_no, mbox_cmd[2]);
 596
 597         return QLA_SUCCESS;
 598 }
 599
 600 /**
 601  * qla4xxx_get_fwddb_entry - retrieves firmware ddb entry
 602  * @ha: Pointer to host adapter structure.
 603  * @fw_ddb_index: Firmware's device database index
 604  * @fw_ddb_entry: Pointer to firmware's device database entry structure
 605  * @num_valid_ddb_entries: Pointer to number of valid ddb entries
 606  * @next_ddb_index: Pointer to next valid device database index
 607  * @fw_ddb_device_state: Pointer to device state
 608  **/
 609 int qla4xxx_get_fwddb_entry(struct scsi_qla_host *ha,
 610                             uint16_t fw_ddb_index,
 611                             struct dev_db_entry *fw_ddb_entry,
 612                             dma_addr_t fw_ddb_entry_dma,
 613                             uint32_t *num_valid_ddb_entries,
 614                             uint32_t *next_ddb_index,
 615                             uint32_t *fw_ddb_device_state,
 616                             uint32_t *conn_err_detail,
 617                             uint16_t *tcp_source_port_num,
 618                             uint16_t *connection_id)
 619 {
 620         int status = QLA_ERROR;
 621         uint16_t options;
 622         uint32_t mbox_cmd[MBOX_REG_COUNT];
 623         uint32_t mbox_sts[MBOX_REG_COUNT];
 624
 625         /* Make sure the device index is valid */
 626         if (fw_ddb_index >= MAX_DDB_ENTRIES) {
 627                 DEBUG2(printk("scsi%ld: %s: ddb [%d] out of range.\n",
 628                               ha->host_no, __func__, fw_ddb_index));
 629                 goto exit_get_fwddb;
 630         }
 631         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 632         memset(&mbox_sts, 0, sizeof(mbox_sts));
 633
 634         mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY;
 635         mbox_cmd[1] = (uint32_t) fw_ddb_index;
 636         mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
 637         mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
 638         mbox_cmd[4] = sizeof(struct dev_db_entry);
 639
 640         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 7, &mbox_cmd[0], &mbox_sts[0]) ==
 641             QLA_ERROR) {
 642                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_DATABASE_ENTRY failed"
 643                               " with status 0x%04X\n", ha->host_no, __func__,
 644                               mbox_sts[0]));
 645                 goto exit_get_fwddb;
 646         }
 647         if (fw_ddb_index != mbox_sts[1]) {
 648                 DEBUG2(printk("scsi%ld: %s: ddb mismatch [%d] != [%d].\n",
 649                               ha->host_no, __func__, fw_ddb_index,
 650                               mbox_sts[1]));
 651                 goto exit_get_fwddb;
 652         }
 653         if (fw_ddb_entry) {
 654                 options = le16_to_cpu(fw_ddb_entry->options);
 655                 if (options & DDB_OPT_IPV6_DEVICE) {
 656                         ql4_printk(KERN_INFO, ha, "%s: DDB[%d] MB0 %04x Tot %d "
 657                                 "Next %d State %04x ConnErr %08x %pI6 "
 658                                 ":%04d \"%s\"\n", __func__, fw_ddb_index,
 659                                 mbox_sts[0], mbox_sts[2], mbox_sts[3],
 660                                 mbox_sts[4], mbox_sts[5],
 661                                 fw_ddb_entry->ip_addr,
 662                                 le16_to_cpu(fw_ddb_entry->port),
 663                                 fw_ddb_entry->iscsi_name);
 664                 } else {
 665                         ql4_printk(KERN_INFO, ha, "%s: DDB[%d] MB0 %04x Tot %d "
 666                                 "Next %d State %04x ConnErr %08x %pI4 "
 667                                 ":%04d \"%s\"\n", __func__, fw_ddb_index,
 668                                 mbox_sts[0], mbox_sts[2], mbox_sts[3],
 669                                 mbox_sts[4], mbox_sts[5],
 670                                 fw_ddb_entry->ip_addr,
 671                                 le16_to_cpu(fw_ddb_entry->port),
 672                                 fw_ddb_entry->iscsi_name);
 673                 }
 674         }
 675         if (num_valid_ddb_entries)
 676                 *num_valid_ddb_entries = mbox_sts[2];
 677         if (next_ddb_index)
 678                 *next_ddb_index = mbox_sts[3];
 679         if (fw_ddb_device_state)
 680                 *fw_ddb_device_state = mbox_sts[4];
 681
 682         /*
 683          * RA: This mailbox has been changed to pass connection error and
 684          * details.  Its true for ISP4010 as per Version E - Not sure when it
 685          * was changed.  Get the time2wait from the fw_dd_entry field :
 686          * default_time2wait which we call it as minTime2Wait DEV_DB_ENTRY
 687          * struct.
 688          */
 689         if (conn_err_detail)
 690                 *conn_err_detail = mbox_sts[5];
 691         if (tcp_source_port_num)
 692                 *tcp_source_port_num = (uint16_t) (mbox_sts[6] >> 16);
 693         if (connection_id)
 694                 *connection_id = (uint16_t) mbox_sts[6] & 0x00FF;
 695         status = QLA_SUCCESS;
 696
 697 exit_get_fwddb:
 698         return status;
 699 }
 700
 701 /**
 702  * qla4xxx_set_fwddb_entry - sets a ddb entry.
 703  * @ha: Pointer to host adapter structure.
 704  * @fw_ddb_index: Firmware's device database index
 705  * @fw_ddb_entry: Pointer to firmware's ddb entry structure, or NULL.
 706  *
 707  * This routine initializes or updates the adapter's device database
 708  * entry for the specified device. It also triggers a login for the
 709  * specified device. Therefore, it may also be used as a secondary
 710  * login routine when a NULL pointer is specified for the fw_ddb_entry.
 711  **/
 712 int qla4xxx_set_ddb_entry(struct scsi_qla_host * ha, uint16_t fw_ddb_index,
 713                           dma_addr_t fw_ddb_entry_dma)
 714 {
 715         uint32_t mbox_cmd[MBOX_REG_COUNT];
 716         uint32_t mbox_sts[MBOX_REG_COUNT];
 717         int status;
 718
 719         /* Do not wait for completion. The firmware will send us an
 720          * ASTS_DATABASE_CHANGED (0x8014) to notify us of the login status.
 721          */
 722         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 723         memset(&mbox_sts, 0, sizeof(mbox_sts));
 724
 725         mbox_cmd[0] = MBOX_CMD_SET_DATABASE_ENTRY;
 726         mbox_cmd[1] = (uint32_t) fw_ddb_index;
 727         mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
 728         mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
 729         mbox_cmd[4] = sizeof(struct dev_db_entry);
 730
 731         status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0],
 732             &mbox_sts[0]);
 733         DEBUG2(printk("scsi%ld: %s: status=%d mbx0=0x%x mbx4=0x%x\n",
 734             ha->host_no, __func__, status, mbox_sts[0], mbox_sts[4]);)
 735
 736         return status;
 737 }
 738
 739 /**
 740  * qla4xxx_get_crash_record - retrieves crash record.
 741  * @ha: Pointer to host adapter structure.
 742  *
 743  * This routine retrieves a crash record from the QLA4010 after an 8002h aen.
 744  **/
 745 void qla4xxx_get_crash_record(struct scsi_qla_host * ha)
 746 {
 747         uint32_t mbox_cmd[MBOX_REG_COUNT];
 748         uint32_t mbox_sts[MBOX_REG_COUNT];
 749         struct crash_record *crash_record = NULL;
 750         dma_addr_t crash_record_dma = 0;
 751         uint32_t crash_record_size = 0;
 752
 753         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 754         memset(&mbox_sts, 0, sizeof(mbox_cmd));
 755
 756         /* Get size of crash record. */
 757         mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
 758
 759         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 760             QLA_SUCCESS) {
 761                 DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve size!\n",
 762                               ha->host_no, __func__));
 763                 goto exit_get_crash_record;
 764         }
 765         crash_record_size = mbox_sts[4];
 766         if (crash_record_size == 0) {
 767                 DEBUG2(printk("scsi%ld: %s: ERROR: Crash record size is 0!\n",
 768                               ha->host_no, __func__));
 769                 goto exit_get_crash_record;
 770         }
 771
 772         /* Alloc Memory for Crash Record. */
 773         crash_record = dma_alloc_coherent(&ha->pdev->dev, crash_record_size,
 774                                           &crash_record_dma, GFP_KERNEL);
 775         if (crash_record == NULL)
 776                 goto exit_get_crash_record;
 777
 778         /* Get Crash Record. */
 779         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 780         memset(&mbox_sts, 0, sizeof(mbox_cmd));
 781
 782         mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
 783         mbox_cmd[2] = LSDW(crash_record_dma);
 784         mbox_cmd[3] = MSDW(crash_record_dma);
 785         mbox_cmd[4] = crash_record_size;
 786
 787         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 788             QLA_SUCCESS)
 789                 goto exit_get_crash_record;
 790
 791         /* Dump Crash Record. */
 792
 793 exit_get_crash_record:
 794         if (crash_record)
 795                 dma_free_coherent(&ha->pdev->dev, crash_record_size,
 796                                   crash_record, crash_record_dma);
 797 }
 798
 799 /**
 800  * qla4xxx_get_conn_event_log - retrieves connection event log
 801  * @ha: Pointer to host adapter structure.
 802  **/
 803 void qla4xxx_get_conn_event_log(struct scsi_qla_host * ha)
 804 {
 805         uint32_t mbox_cmd[MBOX_REG_COUNT];
 806         uint32_t mbox_sts[MBOX_REG_COUNT];
 807         struct conn_event_log_entry *event_log = NULL;
 808         dma_addr_t event_log_dma = 0;
 809         uint32_t event_log_size = 0;
 810         uint32_t num_valid_entries;
 811         uint32_t      oldest_entry = 0;
 812         uint32_t        max_event_log_entries;
 813         uint8_t         i;
 814
 815
 816         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 817         memset(&mbox_sts, 0, sizeof(mbox_cmd));
 818
 819         /* Get size of crash record. */
 820         mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
 821
 822         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 823             QLA_SUCCESS)
 824                 goto exit_get_event_log;
 825
 826         event_log_size = mbox_sts[4];
 827         if (event_log_size == 0)
 828                 goto exit_get_event_log;
 829
 830         /* Alloc Memory for Crash Record. */
 831         event_log = dma_alloc_coherent(&ha->pdev->dev, event_log_size,
 832                                        &event_log_dma, GFP_KERNEL);
 833         if (event_log == NULL)
 834                 goto exit_get_event_log;
 835
 836         /* Get Crash Record. */
 837         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 838         memset(&mbox_sts, 0, sizeof(mbox_cmd));
 839
 840         mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
 841         mbox_cmd[2] = LSDW(event_log_dma);
 842         mbox_cmd[3] = MSDW(event_log_dma);
 843
 844         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 845             QLA_SUCCESS) {
 846                 DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve event "
 847                               "log!\n", ha->host_no, __func__));
 848                 goto exit_get_event_log;
 849         }
 850
 851         /* Dump Event Log. */
 852         num_valid_entries = mbox_sts[1];
 853
 854         max_event_log_entries = event_log_size /
 855                 sizeof(struct conn_event_log_entry);
 856
 857         if (num_valid_entries > max_event_log_entries)
 858                 oldest_entry = num_valid_entries % max_event_log_entries;
 859
 860         DEBUG3(printk("scsi%ld: Connection Event Log Dump (%d entries):\n",
 861                       ha->host_no, num_valid_entries));
 862
 863         if (ql4xextended_error_logging == 3) {
 864                 if (oldest_entry == 0) {
 865                         /* Circular Buffer has not wrapped around */
 866                         for (i=0; i < num_valid_entries; i++) {
 867                                 qla4xxx_dump_buffer((uint8_t *)event_log+
 868                                                     (i*sizeof(*event_log)),
 869                                                     sizeof(*event_log));
 870                         }
 871                 }
 872                 else {
 873                         /* Circular Buffer has wrapped around -
 874                          * display accordingly*/
 875                         for (i=oldest_entry; i < max_event_log_entries; i++) {
 876                                 qla4xxx_dump_buffer((uint8_t *)event_log+
 877                                                     (i*sizeof(*event_log)),
 878                                                     sizeof(*event_log));
 879                         }
 880                         for (i=0; i < oldest_entry; i++) {
 881                                 qla4xxx_dump_buffer((uint8_t *)event_log+
 882                                                     (i*sizeof(*event_log)),
 883                                                     sizeof(*event_log));
 884                         }
 885                 }
 886         }
 887
 888 exit_get_event_log:
 889         if (event_log)
 890                 dma_free_coherent(&ha->pdev->dev, event_log_size, event_log,
 891                                   event_log_dma);
 892 }
 893
 894 /**
 895  * qla4xxx_abort_task - issues Abort Task
 896  * @ha: Pointer to host adapter structure.
 897  * @srb: Pointer to srb entry
 898  *
 899  * This routine performs a LUN RESET on the specified target/lun.
 900  * The caller must ensure that the ddb_entry and lun_entry pointers
 901  * are valid before calling this routine.
 902  **/
 903 int qla4xxx_abort_task(struct scsi_qla_host *ha, struct srb *srb)
 904 {
 905         uint32_t mbox_cmd[MBOX_REG_COUNT];
 906         uint32_t mbox_sts[MBOX_REG_COUNT];
 907         struct scsi_cmnd *cmd = srb->cmd;
 908         int status = QLA_SUCCESS;
 909         unsigned long flags = 0;
 910         uint32_t index;
 911
 912         /*
 913          * Send abort task command to ISP, so that the ISP will return
 914          * request with ABORT status
 915          */
 916         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 917         memset(&mbox_sts, 0, sizeof(mbox_sts));
 918
 919         spin_lock_irqsave(&ha->hardware_lock, flags);
 920         index = (unsigned long)(unsigned char *)cmd->host_scribble;
 921         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 922
 923         /* Firmware already posted completion on response queue */
 924         if (index == MAX_SRBS)
 925                 return status;
 926
 927         mbox_cmd[0] = MBOX_CMD_ABORT_TASK;
 928         mbox_cmd[1] = srb->fw_ddb_index;
 929         mbox_cmd[2] = index;
 930         /* Immediate Command Enable */
 931         mbox_cmd[5] = 0x01;
 932
 933         qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0],
 934             &mbox_sts[0]);
 935         if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE) {
 936                 status = QLA_ERROR;
 937
 938                 DEBUG2(printk(KERN_WARNING "scsi%ld:%d:%d: abort task FAILED: "
 939                     "mbx0=%04X, mb1=%04X, mb2=%04X, mb3=%04X, mb4=%04X\n",
 940                     ha->host_no, cmd->device->id, cmd->device->lun, mbox_sts[0],
 941                     mbox_sts[1], mbox_sts[2], mbox_sts[3], mbox_sts[4]));
 942         }
 943
 944         return status;
 945 }
 946
 947 /**
 948  * qla4xxx_reset_lun - issues LUN Reset
 949  * @ha: Pointer to host adapter structure.
 950  * @ddb_entry: Pointer to device database entry
 951  * @lun: lun number
 952  *
 953  * This routine performs a LUN RESET on the specified target/lun.
 954  * The caller must ensure that the ddb_entry and lun_entry pointers
 955  * are valid before calling this routine.
 956  **/
 957 int qla4xxx_reset_lun(struct scsi_qla_host * ha, struct ddb_entry * ddb_entry,
 958                       int lun)
 959 {
 960         uint32_t mbox_cmd[MBOX_REG_COUNT];
 961         uint32_t mbox_sts[MBOX_REG_COUNT];
 962         int status = QLA_SUCCESS;
 963
 964         DEBUG2(printk("scsi%ld:%d:%d: lun reset issued\n", ha->host_no,
 965                       ddb_entry->fw_ddb_index, lun));
 966
 967         /*
 968          * Send lun reset command to ISP, so that the ISP will return all
 969          * outstanding requests with RESET status
 970          */
 971         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 972         memset(&mbox_sts, 0, sizeof(mbox_sts));
 973
 974         mbox_cmd[0] = MBOX_CMD_LUN_RESET;
 975         mbox_cmd[1] = ddb_entry->fw_ddb_index;
 976         mbox_cmd[2] = lun << 8;
 977         mbox_cmd[5] = 0x01;     /* Immediate Command Enable */
 978
 979         qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], &mbox_sts[0]);
 980         if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
 981             mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
 982                 status = QLA_ERROR;
 983
 984         return status;
 985 }
 986
 987 /**
 988  * qla4xxx_reset_target - issues target Reset
 989  * @ha: Pointer to host adapter structure.
 990  * @db_entry: Pointer to device database entry
 991  * @un_entry: Pointer to lun entry structure
 992  *
 993  * This routine performs a TARGET RESET on the specified target.
 994  * The caller must ensure that the ddb_entry pointers
 995  * are valid before calling this routine.
 996  **/
 997 int qla4xxx_reset_target(struct scsi_qla_host *ha,
 998                          struct ddb_entry *ddb_entry)
 999 {
1000         uint32_t mbox_cmd[MBOX_REG_COUNT];
1001         uint32_t mbox_sts[MBOX_REG_COUNT];
1002         int status = QLA_SUCCESS;
1003
1004         DEBUG2(printk("scsi%ld:%d: target reset issued\n", ha->host_no,
1005                       ddb_entry->fw_ddb_index));
1006
1007         /*
1008          * Send target reset command to ISP, so that the ISP will return all
1009          * outstanding requests with RESET status
1010          */
1011         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1012         memset(&mbox_sts, 0, sizeof(mbox_sts));
1013
1014         mbox_cmd[0] = MBOX_CMD_TARGET_WARM_RESET;
1015         mbox_cmd[1] = ddb_entry->fw_ddb_index;
1016         mbox_cmd[5] = 0x01;     /* Immediate Command Enable */
1017
1018         qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0],
1019                                 &mbox_sts[0]);
1020         if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
1021             mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
1022                 status = QLA_ERROR;
1023
1024         return status;
1025 }
1026
1027 int qla4xxx_get_flash(struct scsi_qla_host * ha, dma_addr_t dma_addr,
1028                       uint32_t offset, uint32_t len)
1029 {
1030         uint32_t mbox_cmd[MBOX_REG_COUNT];
1031         uint32_t mbox_sts[MBOX_REG_COUNT];
1032
1033         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1034         memset(&mbox_sts, 0, sizeof(mbox_sts));
1035
1036         mbox_cmd[0] = MBOX_CMD_READ_FLASH;
1037         mbox_cmd[1] = LSDW(dma_addr);
1038         mbox_cmd[2] = MSDW(dma_addr);
1039         mbox_cmd[3] = offset;
1040         mbox_cmd[4] = len;
1041
1042         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 2, &mbox_cmd[0], &mbox_sts[0]) !=
1043             QLA_SUCCESS) {
1044                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_READ_FLASH, failed w/ "
1045                     "status %04X %04X, offset %08x, len %08x\n", ha->host_no,
1046                     __func__, mbox_sts[0], mbox_sts[1], offset, len));
1047                 return QLA_ERROR;
1048         }
1049         return QLA_SUCCESS;
1050 }
1051
1052 /**
1053  * qla4xxx_get_fw_version - gets firmware version
1054  * @ha: Pointer to host adapter structure.
1055  *
1056  * Retrieves the firmware version on HBA. In QLA4010, mailboxes 2 & 3 may
1057  * hold an address for data.  Make sure that we write 0 to those mailboxes,
1058  * if unused.
1059  **/
1060 int qla4xxx_get_fw_version(struct scsi_qla_host * ha)
1061 {
1062         uint32_t mbox_cmd[MBOX_REG_COUNT];
1063         uint32_t mbox_sts[MBOX_REG_COUNT];
1064
1065         /* Get firmware version. */
1066         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1067         memset(&mbox_sts, 0, sizeof(mbox_sts));
1068
1069         mbox_cmd[0] = MBOX_CMD_ABOUT_FW;
1070
1071         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
1072             QLA_SUCCESS) {
1073                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_ABOUT_FW failed w/ "
1074                     "status %04X\n", ha->host_no, __func__, mbox_sts[0]));
1075                 return QLA_ERROR;
1076         }
1077
1078         /* Save firmware version information. */
1079         ha->firmware_version[0] = mbox_sts[1];
1080         ha->firmware_version[1] = mbox_sts[2];
1081         ha->patch_number = mbox_sts[3];
1082         ha->build_number = mbox_sts[4];
1083
1084         return QLA_SUCCESS;
1085 }
1086
1087 static int qla4xxx_get_default_ddb(struct scsi_qla_host *ha,
1088                                    dma_addr_t dma_addr)
1089 {
1090         uint32_t mbox_cmd[MBOX_REG_COUNT];
1091         uint32_t mbox_sts[MBOX_REG_COUNT];
1092
1093         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1094         memset(&mbox_sts, 0, sizeof(mbox_sts));
1095
1096         mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY_DEFAULTS;
1097         mbox_cmd[2] = LSDW(dma_addr);
1098         mbox_cmd[3] = MSDW(dma_addr);
1099
1100         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], &mbox_sts[0]) !=
1101             QLA_SUCCESS) {
1102                 DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
1103                      ha->host_no, __func__, mbox_sts[0]));
1104                 return QLA_ERROR;
1105         }
1106         return QLA_SUCCESS;
1107 }
1108
1109 static int qla4xxx_req_ddb_entry(struct scsi_qla_host *ha, uint32_t *ddb_index)
1110 {
1111         uint32_t mbox_cmd[MBOX_REG_COUNT];
1112         uint32_t mbox_sts[MBOX_REG_COUNT];
1113
1114         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1115         memset(&mbox_sts, 0, sizeof(mbox_sts));
1116
1117         mbox_cmd[0] = MBOX_CMD_REQUEST_DATABASE_ENTRY;
1118         mbox_cmd[1] = MAX_PRST_DEV_DB_ENTRIES;
1119
1120         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 3, &mbox_cmd[0], &mbox_sts[0]) !=
1121             QLA_SUCCESS) {
1122                 if (mbox_sts[0] == MBOX_STS_COMMAND_ERROR) {
1123                         *ddb_index = mbox_sts[2];
1124                 } else {
1125                         DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
1126                              ha->host_no, __func__, mbox_sts[0]));
1127                         return QLA_ERROR;
1128                 }
1129         } else {
1130                 *ddb_index = MAX_PRST_DEV_DB_ENTRIES;
1131         }
1132
1133         return QLA_SUCCESS;
1134 }
1135
1136
1137 int qla4xxx_send_tgts(struct scsi_qla_host *ha, char *ip, uint16_t port)
1138 {
1139         struct dev_db_entry *fw_ddb_entry;
1140         dma_addr_t fw_ddb_entry_dma;
1141         uint32_t ddb_index;
1142         int ret_val = QLA_SUCCESS;
1143
1144
1145         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
1146                                           sizeof(*fw_ddb_entry),
1147                                           &fw_ddb_entry_dma, GFP_KERNEL);
1148         if (!fw_ddb_entry) {
1149                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
1150                               ha->host_no, __func__));
1151                 ret_val = QLA_ERROR;
1152                 goto exit_send_tgts_no_free;
1153         }
1154
1155         ret_val = qla4xxx_get_default_ddb(ha, fw_ddb_entry_dma);
1156         if (ret_val != QLA_SUCCESS)
1157                 goto exit_send_tgts;
1158
1159         ret_val = qla4xxx_req_ddb_entry(ha, &ddb_index);
1160         if (ret_val != QLA_SUCCESS)
1161                 goto exit_send_tgts;
1162
1163         memset(fw_ddb_entry->iscsi_alias, 0,
1164                sizeof(fw_ddb_entry->iscsi_alias));
1165
1166         memset(fw_ddb_entry->iscsi_name, 0,
1167                sizeof(fw_ddb_entry->iscsi_name));
1168
1169         memset(fw_ddb_entry->ip_addr, 0, sizeof(fw_ddb_entry->ip_addr));
1170         memset(fw_ddb_entry->tgt_addr, 0,
1171                sizeof(fw_ddb_entry->tgt_addr));
1172
1173         fw_ddb_entry->options = (DDB_OPT_DISC_SESSION | DDB_OPT_TARGET);
1174         fw_ddb_entry->port = cpu_to_le16(ntohs(port));
1175
1176         fw_ddb_entry->ip_addr[0] = *ip;
1177         fw_ddb_entry->ip_addr[1] = *(ip + 1);
1178         fw_ddb_entry->ip_addr[2] = *(ip + 2);
1179         fw_ddb_entry->ip_addr[3] = *(ip + 3);
1180
1181         ret_val = qla4xxx_set_ddb_entry(ha, ddb_index, fw_ddb_entry_dma);
1182
1183 exit_send_tgts:
1184         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1185                           fw_ddb_entry, fw_ddb_entry_dma);
1186 exit_send_tgts_no_free:
1187         return ret_val;
1188 }
1189