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
  10
  11 /**
  12  * qla4xxx_mailbox_command - issues mailbox commands
  13  * @ha: Pointer to host adapter structure.
  14  * @inCount: number of mailbox registers to load.
  15  * @outCount: number of mailbox registers to return.
  16  * @mbx_cmd: data pointer for mailbox in registers.
  17  * @mbx_sts: data pointer for mailbox out registers.
  18  *
  19  * This routine sssue mailbox commands and waits for completion.
  20  * If outCount is 0, this routine completes successfully WITHOUT waiting
  21  * for the mailbox command to complete.
  22  **/
  23 int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount,
  24                             uint8_t outCount, uint32_t *mbx_cmd,
  25                             uint32_t *mbx_sts)
  26 {
  27         int status = QLA_ERROR;
  28         uint8_t i;
  29         u_long wait_count;
  30         uint32_t intr_status;
  31         unsigned long flags = 0;
  32
  33         /* Make sure that pointers are valid */
  34         if (!mbx_cmd || !mbx_sts) {
  35                 DEBUG2(printk("scsi%ld: %s: Invalid mbx_cmd or mbx_sts "
  36                               "pointer\n", ha->host_no, __func__));
  37                 return status;
  38         }
  39         /* Mailbox code active */
  40         wait_count = MBOX_TOV * 100;
  41
  42         while (wait_count--) {
  43                 mutex_lock(&ha->mbox_sem);
  44                 if (!test_bit(AF_MBOX_COMMAND, &ha->flags)) {
  45                         set_bit(AF_MBOX_COMMAND, &ha->flags);
  46                         mutex_unlock(&ha->mbox_sem);
  47                         break;
  48                 }
  49                 mutex_unlock(&ha->mbox_sem);
  50                 if (!wait_count) {
  51                         DEBUG2(printk("scsi%ld: %s: mbox_sem failed\n",
  52                                 ha->host_no, __func__));
  53                         return status;
  54                 }
  55                 msleep(10);
  56         }
  57
  58         /* To prevent overwriting mailbox registers for a command that has
  59          * not yet been serviced, check to see if a previously issued
  60          * mailbox command is interrupting.
  61          * -----------------------------------------------------------------
  62          */
  63         spin_lock_irqsave(&ha->hardware_lock, flags);
  64         intr_status = readl(&ha->reg->ctrl_status);
  65         if (intr_status & CSR_SCSI_PROCESSOR_INTR) {
  66                 /* Service existing interrupt */
  67                 qla4xxx_interrupt_service_routine(ha, intr_status);
  68                 clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
  69         }
  70
  71         /* Send the mailbox command to the firmware */
  72         ha->mbox_status_count = outCount;
  73         for (i = 0; i < outCount; i++)
  74                 ha->mbox_status[i] = 0;
  75
  76         /* Load all mailbox registers, except mailbox 0. */
  77         for (i = 1; i < inCount; i++)
  78                 writel(mbx_cmd[i], &ha->reg->mailbox[i]);
  79
  80         /* Wakeup firmware  */
  81         writel(mbx_cmd[0], &ha->reg->mailbox[0]);
  82         readl(&ha->reg->mailbox[0]);
  83         writel(set_rmask(CSR_INTR_RISC), &ha->reg->ctrl_status);
  84         readl(&ha->reg->ctrl_status);
  85         spin_unlock_irqrestore(&ha->hardware_lock, flags);
  86
  87         /* Wait for completion */
  88
  89         /*
  90          * If we don't want status, don't wait for the mailbox command to
  91          * complete.  For example, MBOX_CMD_RESET_FW doesn't return status,
  92          * you must poll the inbound Interrupt Mask for completion.
  93          */
  94         if (outCount == 0) {
  95                 status = QLA_SUCCESS;
  96                 goto mbox_exit;
  97         }
  98         /* Wait for command to complete */
  99         wait_count = jiffies + MBOX_TOV * HZ;
 100         while (test_bit(AF_MBOX_COMMAND_DONE, &ha->flags) == 0) {
 101                 if (time_after_eq(jiffies, wait_count))
 102                         break;
 103
 104                 spin_lock_irqsave(&ha->hardware_lock, flags);
 105                 intr_status = readl(&ha->reg->ctrl_status);
 106                 if (intr_status & INTR_PENDING) {
 107                         /*
 108                          * Service the interrupt.
 109                          * The ISR will save the mailbox status registers
 110                          * to a temporary storage location in the adapter
 111                          * structure.
 112                          */
 113                         ha->mbox_status_count = outCount;
 114                         qla4xxx_interrupt_service_routine(ha, intr_status);
 115                 }
 116                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 117                 msleep(10);
 118         }
 119
 120         /* Check for mailbox timeout. */
 121         if (!test_bit(AF_MBOX_COMMAND_DONE, &ha->flags)) {
 122                 DEBUG2(printk("scsi%ld: Mailbox Cmd 0x%08X timed out ...,"
 123                               " Scheduling Adapter Reset\n", ha->host_no,
 124                               mbx_cmd[0]));
 125                 ha->mailbox_timeout_count++;
 126                 mbx_sts[0] = (-1);
 127                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
 128                 goto mbox_exit;
 129         }
 130
 131         /*
 132          * Copy the mailbox out registers to the caller's mailbox in/out
 133          * structure.
 134          */
 135         spin_lock_irqsave(&ha->hardware_lock, flags);
 136         for (i = 0; i < outCount; i++)
 137                 mbx_sts[i] = ha->mbox_status[i];
 138
 139         /* Set return status and error flags (if applicable). */
 140         switch (ha->mbox_status[0]) {
 141         case MBOX_STS_COMMAND_COMPLETE:
 142                 status = QLA_SUCCESS;
 143                 break;
 144
 145         case MBOX_STS_INTERMEDIATE_COMPLETION:
 146                 status = QLA_SUCCESS;
 147                 break;
 148
 149         case MBOX_STS_BUSY:
 150                 DEBUG2( printk("scsi%ld: %s: Cmd = %08X, ISP BUSY\n",
 151                                ha->host_no, __func__, mbx_cmd[0]));
 152                 ha->mailbox_timeout_count++;
 153                 break;
 154
 155         default:
 156                 DEBUG2(printk("scsi%ld: %s: **** FAILED, cmd = %08X, "
 157                               "sts = %08X ****\n", ha->host_no, __func__,
 158                               mbx_cmd[0], mbx_sts[0]));
 159                 break;
 160         }
 161         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 162
 163 mbox_exit:
 164         mutex_lock(&ha->mbox_sem);
 165         clear_bit(AF_MBOX_COMMAND, &ha->flags);
 166         mutex_unlock(&ha->mbox_sem);
 167         clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
 168
 169         return status;
 170 }
 171
 172
 173 /**
 174  * qla4xxx_issue_iocb - issue mailbox iocb command
 175  * @ha: adapter state pointer.
 176  * @buffer: buffer pointer.
 177  * @phys_addr: physical address of buffer.
 178  * @size: size of buffer.
 179  *
 180  * Issues iocbs via mailbox commands.
 181  * TARGET_QUEUE_LOCK must be released.
 182  * ADAPTER_STATE_LOCK must be released.
 183  **/
 184 int
 185 qla4xxx_issue_iocb(struct scsi_qla_host * ha, void *buffer,
 186                    dma_addr_t phys_addr, size_t size)
 187 {
 188         uint32_t mbox_cmd[MBOX_REG_COUNT];
 189         uint32_t mbox_sts[MBOX_REG_COUNT];
 190         int status;
 191
 192         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 193         memset(&mbox_sts, 0, sizeof(mbox_sts));
 194         mbox_cmd[0] = MBOX_CMD_EXECUTE_IOCB_A64;
 195         mbox_cmd[1] = 0;
 196         mbox_cmd[2] = LSDW(phys_addr);
 197         mbox_cmd[3] = MSDW(phys_addr);
 198         status = qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]);
 199         return status;
 200 }
 201
 202 int qla4xxx_conn_close_sess_logout(struct scsi_qla_host * ha,
 203                                    uint16_t fw_ddb_index,
 204                                    uint16_t connection_id,
 205                                    uint16_t option)
 206 {
 207         uint32_t mbox_cmd[MBOX_REG_COUNT];
 208         uint32_t mbox_sts[MBOX_REG_COUNT];
 209
 210         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 211         memset(&mbox_sts, 0, sizeof(mbox_sts));
 212         mbox_cmd[0] = MBOX_CMD_CONN_CLOSE_SESS_LOGOUT;
 213         mbox_cmd[1] = fw_ddb_index;
 214         mbox_cmd[2] = connection_id;
 215         mbox_cmd[3] = LOGOUT_OPTION_RELOGIN;
 216         if (qla4xxx_mailbox_command(ha, 4, 2, &mbox_cmd[0], &mbox_sts[0]) !=
 217             QLA_SUCCESS) {
 218                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_CONN_CLOSE_SESS_LOGOUT "
 219                               "option %04x failed sts %04X %04X",
 220                               ha->host_no, __func__,
 221                               option, mbox_sts[0], mbox_sts[1]));
 222                 if (mbox_sts[0] == 0x4005)
 223                         DEBUG2(printk("%s reason %04X\n", __func__,
 224                                       mbox_sts[1]));
 225         }
 226         return QLA_SUCCESS;
 227 }
 228
 229 int qla4xxx_clear_database_entry(struct scsi_qla_host * ha,
 230                                  uint16_t fw_ddb_index)
 231 {
 232         uint32_t mbox_cmd[MBOX_REG_COUNT];
 233         uint32_t mbox_sts[MBOX_REG_COUNT];
 234
 235         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 236         memset(&mbox_sts, 0, sizeof(mbox_sts));
 237         mbox_cmd[0] = MBOX_CMD_CLEAR_DATABASE_ENTRY;
 238         mbox_cmd[1] = fw_ddb_index;
 239         if (qla4xxx_mailbox_command(ha, 2, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 240             QLA_SUCCESS)
 241                 return QLA_ERROR;
 242
 243         return QLA_SUCCESS;
 244 }
 245
 246 /**
 247  * qla4xxx_initialize_fw_cb - initializes firmware control block.
 248  * @ha: Pointer to host adapter structure.
 249  **/
 250 int qla4xxx_initialize_fw_cb(struct scsi_qla_host * ha)
 251 {
 252         struct init_fw_ctrl_blk *init_fw_cb;
 253         dma_addr_t init_fw_cb_dma;
 254         uint32_t mbox_cmd[MBOX_REG_COUNT];
 255         uint32_t mbox_sts[MBOX_REG_COUNT];
 256         int status = QLA_ERROR;
 257
 258         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
 259                                         sizeof(struct init_fw_ctrl_blk),
 260                                         &init_fw_cb_dma, GFP_KERNEL);
 261         if (init_fw_cb == NULL) {
 262                 DEBUG2(printk("scsi%ld: %s: Unable to alloc init_cb\n",
 263                               ha->host_no, __func__));
 264                 return 10;
 265         }
 266         memset(init_fw_cb, 0, sizeof(struct init_fw_ctrl_blk));
 267
 268         /* Get Initialize Firmware Control Block. */
 269         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 270         memset(&mbox_sts, 0, sizeof(mbox_sts));
 271         mbox_cmd[0] = MBOX_CMD_GET_INIT_FW_CTRL_BLOCK;
 272         mbox_cmd[2] = LSDW(init_fw_cb_dma);
 273         mbox_cmd[3] = MSDW(init_fw_cb_dma);
 274         if (qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]) !=
 275             QLA_SUCCESS) {
 276                 dma_free_coherent(&ha->pdev->dev,
 277                                   sizeof(struct init_fw_ctrl_blk),
 278                                   init_fw_cb, init_fw_cb_dma);
 279                 return status;
 280         }
 281
 282         /* Initialize request and response queues. */
 283         qla4xxx_init_rings(ha);
 284
 285         /* Fill in the request and response queue information. */
 286         init_fw_cb->ReqQConsumerIndex = cpu_to_le16(ha->request_out);
 287         init_fw_cb->ComplQProducerIndex = cpu_to_le16(ha->response_in);
 288         init_fw_cb->ReqQLen = __constant_cpu_to_le16(REQUEST_QUEUE_DEPTH);
 289         init_fw_cb->ComplQLen = __constant_cpu_to_le16(RESPONSE_QUEUE_DEPTH);
 290         init_fw_cb->ReqQAddrLo = cpu_to_le32(LSDW(ha->request_dma));
 291         init_fw_cb->ReqQAddrHi = cpu_to_le32(MSDW(ha->request_dma));
 292         init_fw_cb->ComplQAddrLo = cpu_to_le32(LSDW(ha->response_dma));
 293         init_fw_cb->ComplQAddrHi = cpu_to_le32(MSDW(ha->response_dma));
 294         init_fw_cb->ShadowRegBufAddrLo =
 295                 cpu_to_le32(LSDW(ha->shadow_regs_dma));
 296         init_fw_cb->ShadowRegBufAddrHi =
 297                 cpu_to_le32(MSDW(ha->shadow_regs_dma));
 298
 299         /* Set up required options. */
 300         init_fw_cb->FwOptions |=
 301                 __constant_cpu_to_le16(FWOPT_SESSION_MODE |
 302                                        FWOPT_INITIATOR_MODE);
 303         init_fw_cb->FwOptions &= __constant_cpu_to_le16(~FWOPT_TARGET_MODE);
 304
 305         /* Save some info in adapter structure. */
 306         ha->firmware_options = le16_to_cpu(init_fw_cb->FwOptions);
 307         ha->tcp_options = le16_to_cpu(init_fw_cb->TCPOptions);
 308         ha->heartbeat_interval = init_fw_cb->HeartbeatInterval;
 309         memcpy(ha->ip_address, init_fw_cb->IPAddr,
 310                min(sizeof(ha->ip_address), sizeof(init_fw_cb->IPAddr)));
 311         memcpy(ha->subnet_mask, init_fw_cb->SubnetMask,
 312                min(sizeof(ha->subnet_mask), sizeof(init_fw_cb->SubnetMask)));
 313         memcpy(ha->gateway, init_fw_cb->GatewayIPAddr,
 314                min(sizeof(ha->gateway), sizeof(init_fw_cb->GatewayIPAddr)));
 315         memcpy(ha->name_string, init_fw_cb->iSCSINameString,
 316                min(sizeof(ha->name_string),
 317                    sizeof(init_fw_cb->iSCSINameString)));
 318         memcpy(ha->alias, init_fw_cb->Alias,
 319                min(sizeof(ha->alias), sizeof(init_fw_cb->Alias)));
 320
 321         /* Save Command Line Paramater info */
 322         ha->port_down_retry_count = le16_to_cpu(init_fw_cb->KeepAliveTimeout);
 323         ha->discovery_wait = ql4xdiscoverywait;
 324
 325         /* Send Initialize Firmware Control Block. */
 326         mbox_cmd[0] = MBOX_CMD_INITIALIZE_FIRMWARE;
 327         mbox_cmd[1] = 0;
 328         mbox_cmd[2] = LSDW(init_fw_cb_dma);
 329         mbox_cmd[3] = MSDW(init_fw_cb_dma);
 330         if (qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]) ==
 331             QLA_SUCCESS)
 332                 status = QLA_SUCCESS;
 333          else {
 334                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_INITIALIZE_FIRMWARE "
 335                               "failed w/ status %04X\n", ha->host_no, __func__,
 336                               mbox_sts[0]));
 337         }
 338         dma_free_coherent(&ha->pdev->dev, sizeof(struct init_fw_ctrl_blk),
 339                           init_fw_cb, init_fw_cb_dma);
 340
 341         return status;
 342 }
 343
 344 /**
 345  * qla4xxx_get_dhcp_ip_address - gets HBA ip address via DHCP
 346  * @ha: Pointer to host adapter structure.
 347  **/
 348 int qla4xxx_get_dhcp_ip_address(struct scsi_qla_host * ha)
 349 {
 350         struct init_fw_ctrl_blk *init_fw_cb;
 351         dma_addr_t init_fw_cb_dma;
 352         uint32_t mbox_cmd[MBOX_REG_COUNT];
 353         uint32_t mbox_sts[MBOX_REG_COUNT];
 354
 355         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
 356                                         sizeof(struct init_fw_ctrl_blk),
 357                                         &init_fw_cb_dma, GFP_KERNEL);
 358         if (init_fw_cb == NULL) {
 359                 printk("scsi%ld: %s: Unable to alloc init_cb\n", ha->host_no,
 360                        __func__);
 361                 return 10;
 362         }
 363
 364         /* Get Initialize Firmware Control Block. */
 365         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 366         memset(&mbox_sts, 0, sizeof(mbox_sts));
 367         memset(init_fw_cb, 0, sizeof(struct init_fw_ctrl_blk));
 368         mbox_cmd[0] = MBOX_CMD_GET_INIT_FW_CTRL_BLOCK;
 369         mbox_cmd[2] = LSDW(init_fw_cb_dma);
 370         mbox_cmd[3] = MSDW(init_fw_cb_dma);
 371
 372         if (qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]) !=
 373             QLA_SUCCESS) {
 374                 DEBUG2(printk("scsi%ld: %s: Failed to get init_fw_ctrl_blk\n",
 375                               ha->host_no, __func__));
 376                 dma_free_coherent(&ha->pdev->dev,
 377                                   sizeof(struct init_fw_ctrl_blk),
 378                                   init_fw_cb, init_fw_cb_dma);
 379                 return QLA_ERROR;
 380         }
 381
 382         /* Save IP Address. */
 383         memcpy(ha->ip_address, init_fw_cb->IPAddr,
 384                min(sizeof(ha->ip_address), sizeof(init_fw_cb->IPAddr)));
 385         memcpy(ha->subnet_mask, init_fw_cb->SubnetMask,
 386                min(sizeof(ha->subnet_mask), sizeof(init_fw_cb->SubnetMask)));
 387         memcpy(ha->gateway, init_fw_cb->GatewayIPAddr,
 388                min(sizeof(ha->gateway), sizeof(init_fw_cb->GatewayIPAddr)));
 389
 390         dma_free_coherent(&ha->pdev->dev, sizeof(struct init_fw_ctrl_blk),
 391                           init_fw_cb, init_fw_cb_dma);
 392
 393         return QLA_SUCCESS;
 394 }
 395
 396 /**
 397  * qla4xxx_get_firmware_state - gets firmware state of HBA
 398  * @ha: Pointer to host adapter structure.
 399  **/
 400 int qla4xxx_get_firmware_state(struct scsi_qla_host * ha)
 401 {
 402         uint32_t mbox_cmd[MBOX_REG_COUNT];
 403         uint32_t mbox_sts[MBOX_REG_COUNT];
 404
 405         /* Get firmware version */
 406         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 407         memset(&mbox_sts, 0, sizeof(mbox_sts));
 408         mbox_cmd[0] = MBOX_CMD_GET_FW_STATE;
 409         if (qla4xxx_mailbox_command(ha, 1, 4, &mbox_cmd[0], &mbox_sts[0]) !=
 410             QLA_SUCCESS) {
 411                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATE failed w/ "
 412                               "status %04X\n", ha->host_no, __func__,
 413                               mbox_sts[0]));
 414                 return QLA_ERROR;
 415         }
 416         ha->firmware_state = mbox_sts[1];
 417         ha->board_id = mbox_sts[2];
 418         ha->addl_fw_state = mbox_sts[3];
 419         DEBUG2(printk("scsi%ld: %s firmware_state=0x%x\n",
 420                       ha->host_no, __func__, ha->firmware_state);)
 421
 422                 return QLA_SUCCESS;
 423 }
 424
 425 /**
 426  * qla4xxx_get_firmware_status - retrieves firmware status
 427  * @ha: Pointer to host adapter structure.
 428  **/
 429 int qla4xxx_get_firmware_status(struct scsi_qla_host * ha)
 430 {
 431         uint32_t mbox_cmd[MBOX_REG_COUNT];
 432         uint32_t mbox_sts[MBOX_REG_COUNT];
 433
 434         /* Get firmware version */
 435         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 436         memset(&mbox_sts, 0, sizeof(mbox_sts));
 437         mbox_cmd[0] = MBOX_CMD_GET_FW_STATUS;
 438         if (qla4xxx_mailbox_command(ha, 1, 3, &mbox_cmd[0], &mbox_sts[0]) !=
 439             QLA_SUCCESS) {
 440                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATUS failed w/ "
 441                               "status %04X\n", ha->host_no, __func__,
 442                               mbox_sts[0]));
 443                 return QLA_ERROR;
 444         }
 445
 446         /* High-water mark of IOCBs */
 447         ha->iocb_hiwat = mbox_sts[2];
 448         if (ha->iocb_hiwat > IOCB_HIWAT_CUSHION)
 449                 ha->iocb_hiwat -= IOCB_HIWAT_CUSHION;
 450         else
 451                 dev_info(&ha->pdev->dev, "WARNING!!!  You have less than %d "
 452                            "firmare IOCBs available (%d).\n",
 453                            IOCB_HIWAT_CUSHION, ha->iocb_hiwat);
 454
 455         return QLA_SUCCESS;
 456 }
 457
 458 /**
 459  * qla4xxx_get_fwddb_entry - retrieves firmware ddb entry
 460  * @ha: Pointer to host adapter structure.
 461  * @fw_ddb_index: Firmware's device database index
 462  * @fw_ddb_entry: Pointer to firmware's device database entry structure
 463  * @num_valid_ddb_entries: Pointer to number of valid ddb entries
 464  * @next_ddb_index: Pointer to next valid device database index
 465  * @fw_ddb_device_state: Pointer to device state
 466  **/
 467 int qla4xxx_get_fwddb_entry(struct scsi_qla_host *ha,
 468                             uint16_t fw_ddb_index,
 469                             struct dev_db_entry *fw_ddb_entry,
 470                             dma_addr_t fw_ddb_entry_dma,
 471                             uint32_t *num_valid_ddb_entries,
 472                             uint32_t *next_ddb_index,
 473                             uint32_t *fw_ddb_device_state,
 474                             uint32_t *conn_err_detail,
 475                             uint16_t *tcp_source_port_num,
 476                             uint16_t *connection_id)
 477 {
 478         int status = QLA_ERROR;
 479         uint32_t mbox_cmd[MBOX_REG_COUNT];
 480         uint32_t mbox_sts[MBOX_REG_COUNT];
 481
 482         /* Make sure the device index is valid */
 483         if (fw_ddb_index >= MAX_DDB_ENTRIES) {
 484                 DEBUG2(printk("scsi%ld: %s: index [%d] out of range.\n",
 485                               ha->host_no, __func__, fw_ddb_index));
 486                 goto exit_get_fwddb;
 487         }
 488         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 489         memset(&mbox_sts, 0, sizeof(mbox_sts));
 490         mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY;
 491         mbox_cmd[1] = (uint32_t) fw_ddb_index;
 492         mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
 493         mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
 494         if (qla4xxx_mailbox_command(ha, 4, 7, &mbox_cmd[0], &mbox_sts[0]) ==
 495             QLA_ERROR) {
 496                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_DATABASE_ENTRY failed"
 497                               " with status 0x%04X\n", ha->host_no, __func__,
 498                               mbox_sts[0]));
 499                 goto exit_get_fwddb;
 500         }
 501         if (fw_ddb_index != mbox_sts[1]) {
 502                 DEBUG2(printk("scsi%ld: %s: index mismatch [%d] != [%d].\n",
 503                               ha->host_no, __func__, fw_ddb_index,
 504                               mbox_sts[1]));
 505                 goto exit_get_fwddb;
 506         }
 507         if (fw_ddb_entry) {
 508                 dev_info(&ha->pdev->dev, "DDB[%d] MB0 %04x Tot %d Next %d "
 509                            "State %04x ConnErr %08x %d.%d.%d.%d:%04d \"%s\"\n",
 510                            fw_ddb_index, mbox_sts[0], mbox_sts[2], mbox_sts[3],
 511                            mbox_sts[4], mbox_sts[5], fw_ddb_entry->ipAddr[0],
 512                            fw_ddb_entry->ipAddr[1], fw_ddb_entry->ipAddr[2],
 513                            fw_ddb_entry->ipAddr[3],
 514                            le16_to_cpu(fw_ddb_entry->portNumber),
 515                            fw_ddb_entry->iscsiName);
 516         }
 517         if (num_valid_ddb_entries)
 518                 *num_valid_ddb_entries = mbox_sts[2];
 519         if (next_ddb_index)
 520                 *next_ddb_index = mbox_sts[3];
 521         if (fw_ddb_device_state)
 522                 *fw_ddb_device_state = mbox_sts[4];
 523
 524         /*
 525          * RA: This mailbox has been changed to pass connection error and
 526          * details.  Its true for ISP4010 as per Version E - Not sure when it
 527          * was changed.  Get the time2wait from the fw_dd_entry field :
 528          * default_time2wait which we call it as minTime2Wait DEV_DB_ENTRY
 529          * struct.
 530          */
 531         if (conn_err_detail)
 532                 *conn_err_detail = mbox_sts[5];
 533         if (tcp_source_port_num)
 534                 *tcp_source_port_num = (uint16_t) mbox_sts[6] >> 16;
 535         if (connection_id)
 536                 *connection_id = (uint16_t) mbox_sts[6] & 0x00FF;
 537         status = QLA_SUCCESS;
 538
 539 exit_get_fwddb:
 540         return status;
 541 }
 542
 543 /**
 544  * qla4xxx_set_fwddb_entry - sets a ddb entry.
 545  * @ha: Pointer to host adapter structure.
 546  * @fw_ddb_index: Firmware's device database index
 547  * @fw_ddb_entry: Pointer to firmware's ddb entry structure, or NULL.
 548  *
 549  * This routine initializes or updates the adapter's device database
 550  * entry for the specified device. It also triggers a login for the
 551  * specified device. Therefore, it may also be used as a secondary
 552  * login routine when a NULL pointer is specified for the fw_ddb_entry.
 553  **/
 554 int qla4xxx_set_ddb_entry(struct scsi_qla_host * ha, uint16_t fw_ddb_index,
 555                           dma_addr_t fw_ddb_entry_dma)
 556 {
 557         uint32_t mbox_cmd[MBOX_REG_COUNT];
 558         uint32_t mbox_sts[MBOX_REG_COUNT];
 559
 560         /* Do not wait for completion. The firmware will send us an
 561          * ASTS_DATABASE_CHANGED (0x8014) to notify us of the login status.
 562          */
 563         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 564         memset(&mbox_sts, 0, sizeof(mbox_sts));
 565
 566         mbox_cmd[0] = MBOX_CMD_SET_DATABASE_ENTRY;
 567         mbox_cmd[1] = (uint32_t) fw_ddb_index;
 568         mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
 569         mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
 570         return qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]);
 571 }
 572
 573 int qla4xxx_conn_open_session_login(struct scsi_qla_host * ha,
 574                                     uint16_t fw_ddb_index)
 575 {
 576         int status = QLA_ERROR;
 577         uint32_t mbox_cmd[MBOX_REG_COUNT];
 578         uint32_t mbox_sts[MBOX_REG_COUNT];
 579
 580         /* Do not wait for completion. The firmware will send us an
 581          * ASTS_DATABASE_CHANGED (0x8014) to notify us of the login status.
 582          */
 583         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 584         memset(&mbox_sts, 0, sizeof(mbox_sts));
 585         mbox_cmd[0] = MBOX_CMD_CONN_OPEN_SESS_LOGIN;
 586         mbox_cmd[1] = (uint32_t) fw_ddb_index;
 587         mbox_cmd[2] = 0;
 588         mbox_cmd[3] = 0;
 589         mbox_cmd[4] = 0;
 590         status = qla4xxx_mailbox_command(ha, 4, 0, &mbox_cmd[0], &mbox_sts[0]);
 591         DEBUG2(printk("%s fw_ddb_index=%d status=%d mbx0_1=0x%x :0x%x\n",
 592                       __func__, fw_ddb_index, status, mbox_sts[0],
 593                       mbox_sts[1]);)
 594
 595                 return status;
 596 }
 597
 598 /**
 599  * qla4xxx_get_crash_record - retrieves crash record.
 600  * @ha: Pointer to host adapter structure.
 601  *
 602  * This routine retrieves a crash record from the QLA4010 after an 8002h aen.
 603  **/
 604 void qla4xxx_get_crash_record(struct scsi_qla_host * ha)
 605 {
 606         uint32_t mbox_cmd[MBOX_REG_COUNT];
 607         uint32_t mbox_sts[MBOX_REG_COUNT];
 608         struct crash_record *crash_record = NULL;
 609         dma_addr_t crash_record_dma = 0;
 610         uint32_t crash_record_size = 0;
 611         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 612         memset(&mbox_sts, 0, sizeof(mbox_cmd));
 613
 614         /* Get size of crash record. */
 615         mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
 616         if (qla4xxx_mailbox_command(ha, 5, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 617             QLA_SUCCESS) {
 618                 DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve size!\n",
 619                               ha->host_no, __func__));
 620                 goto exit_get_crash_record;
 621         }
 622         crash_record_size = mbox_sts[4];
 623         if (crash_record_size == 0) {
 624                 DEBUG2(printk("scsi%ld: %s: ERROR: Crash record size is 0!\n",
 625                               ha->host_no, __func__));
 626                 goto exit_get_crash_record;
 627         }
 628
 629         /* Alloc Memory for Crash Record. */
 630         crash_record = dma_alloc_coherent(&ha->pdev->dev, crash_record_size,
 631                                           &crash_record_dma, GFP_KERNEL);
 632         if (crash_record == NULL)
 633                 goto exit_get_crash_record;
 634
 635         /* Get Crash Record. */
 636         mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
 637         mbox_cmd[2] = LSDW(crash_record_dma);
 638         mbox_cmd[3] = MSDW(crash_record_dma);
 639         mbox_cmd[4] = crash_record_size;
 640         if (qla4xxx_mailbox_command(ha, 5, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 641             QLA_SUCCESS)
 642                 goto exit_get_crash_record;
 643
 644         /* Dump Crash Record. */
 645
 646 exit_get_crash_record:
 647         if (crash_record)
 648                 dma_free_coherent(&ha->pdev->dev, crash_record_size,
 649                                   crash_record, crash_record_dma);
 650 }
 651
 652 /**
 653  * qla4xxx_get_conn_event_log - retrieves connection event log
 654  * @ha: Pointer to host adapter structure.
 655  **/
 656 void qla4xxx_get_conn_event_log(struct scsi_qla_host * ha)
 657 {
 658         uint32_t mbox_cmd[MBOX_REG_COUNT];
 659         uint32_t mbox_sts[MBOX_REG_COUNT];
 660         struct conn_event_log_entry *event_log = NULL;
 661         dma_addr_t event_log_dma = 0;
 662         uint32_t event_log_size = 0;
 663         uint32_t num_valid_entries;
 664         uint32_t      oldest_entry = 0;
 665         uint32_t        max_event_log_entries;
 666         uint8_t         i;
 667
 668
 669         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 670         memset(&mbox_sts, 0, sizeof(mbox_cmd));
 671
 672         /* Get size of crash record. */
 673         mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
 674         if (qla4xxx_mailbox_command(ha, 4, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 675             QLA_SUCCESS)
 676                 goto exit_get_event_log;
 677
 678         event_log_size = mbox_sts[4];
 679         if (event_log_size == 0)
 680                 goto exit_get_event_log;
 681
 682         /* Alloc Memory for Crash Record. */
 683         event_log = dma_alloc_coherent(&ha->pdev->dev, event_log_size,
 684                                        &event_log_dma, GFP_KERNEL);
 685         if (event_log == NULL)
 686                 goto exit_get_event_log;
 687
 688         /* Get Crash Record. */
 689         mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
 690         mbox_cmd[2] = LSDW(event_log_dma);
 691         mbox_cmd[3] = MSDW(event_log_dma);
 692         if (qla4xxx_mailbox_command(ha, 4, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 693             QLA_SUCCESS) {
 694                 DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve event "
 695                               "log!\n", ha->host_no, __func__));
 696                 goto exit_get_event_log;
 697         }
 698
 699         /* Dump Event Log. */
 700         num_valid_entries = mbox_sts[1];
 701
 702         max_event_log_entries = event_log_size /
 703                 sizeof(struct conn_event_log_entry);
 704
 705         if (num_valid_entries > max_event_log_entries)
 706                 oldest_entry = num_valid_entries % max_event_log_entries;
 707
 708         DEBUG3(printk("scsi%ld: Connection Event Log Dump (%d entries):\n",
 709                       ha->host_no, num_valid_entries));
 710
 711         if (ql4xextended_error_logging == 3) {
 712                 if (oldest_entry == 0) {
 713                         /* Circular Buffer has not wrapped around */
 714                         for (i=0; i < num_valid_entries; i++) {
 715                                 qla4xxx_dump_buffer((uint8_t *)event_log+
 716                                                     (i*sizeof(*event_log)),
 717                                                     sizeof(*event_log));
 718                         }
 719                 }
 720                 else {
 721                         /* Circular Buffer has wrapped around -
 722                          * display accordingly*/
 723                         for (i=oldest_entry; i < max_event_log_entries; i++) {
 724                                 qla4xxx_dump_buffer((uint8_t *)event_log+
 725                                                     (i*sizeof(*event_log)),
 726                                                     sizeof(*event_log));
 727                         }
 728                         for (i=0; i < oldest_entry; i++) {
 729                                 qla4xxx_dump_buffer((uint8_t *)event_log+
 730                                                     (i*sizeof(*event_log)),
 731                                                     sizeof(*event_log));
 732                         }
 733                 }
 734         }
 735
 736 exit_get_event_log:
 737         if (event_log)
 738                 dma_free_coherent(&ha->pdev->dev, event_log_size, event_log,
 739                                   event_log_dma);
 740 }
 741
 742 /**
 743  * qla4xxx_reset_lun - issues LUN Reset
 744  * @ha: Pointer to host adapter structure.
 745  * @db_entry: Pointer to device database entry
 746  * @un_entry: Pointer to lun entry structure
 747  *
 748  * This routine performs a LUN RESET on the specified target/lun.
 749  * The caller must ensure that the ddb_entry and lun_entry pointers
 750  * are valid before calling this routine.
 751  **/
 752 int qla4xxx_reset_lun(struct scsi_qla_host * ha, struct ddb_entry * ddb_entry,
 753                       int lun)
 754 {
 755         uint32_t mbox_cmd[MBOX_REG_COUNT];
 756         uint32_t mbox_sts[MBOX_REG_COUNT];
 757         int status = QLA_SUCCESS;
 758
 759         DEBUG2(printk("scsi%ld:%d:%d: lun reset issued\n", ha->host_no,
 760                       ddb_entry->os_target_id, lun));
 761
 762         /*
 763          * Send lun reset command to ISP, so that the ISP will return all
 764          * outstanding requests with RESET status
 765          */
 766         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 767         memset(&mbox_sts, 0, sizeof(mbox_sts));
 768         mbox_cmd[0] = MBOX_CMD_LUN_RESET;
 769         mbox_cmd[1] = ddb_entry->fw_ddb_index;
 770         mbox_cmd[2] = lun << 8;
 771         mbox_cmd[5] = 0x01;     /* Immediate Command Enable */
 772         qla4xxx_mailbox_command(ha, 6, 1, &mbox_cmd[0], &mbox_sts[0]);
 773         if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
 774             mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
 775                 status = QLA_ERROR;
 776
 777         return status;
 778 }
 779
 780
 781 int qla4xxx_get_flash(struct scsi_qla_host * ha, dma_addr_t dma_addr,
 782                       uint32_t offset, uint32_t len)
 783 {
 784         uint32_t mbox_cmd[MBOX_REG_COUNT];
 785         uint32_t mbox_sts[MBOX_REG_COUNT];
 786
 787         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 788         memset(&mbox_sts, 0, sizeof(mbox_sts));
 789         mbox_cmd[0] = MBOX_CMD_READ_FLASH;
 790         mbox_cmd[1] = LSDW(dma_addr);
 791         mbox_cmd[2] = MSDW(dma_addr);
 792         mbox_cmd[3] = offset;
 793         mbox_cmd[4] = len;
 794         if (qla4xxx_mailbox_command(ha, 5, 2, &mbox_cmd[0], &mbox_sts[0]) !=
 795             QLA_SUCCESS) {
 796                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_READ_FLASH, failed w/ "
 797                     "status %04X %04X, offset %08x, len %08x\n", ha->host_no,
 798                     __func__, mbox_sts[0], mbox_sts[1], offset, len));
 799                 return QLA_ERROR;
 800         }
 801         return QLA_SUCCESS;
 802 }
 803
 804 /**
 805  * qla4xxx_get_fw_version - gets firmware version
 806  * @ha: Pointer to host adapter structure.
 807  *
 808  * Retrieves the firmware version on HBA. In QLA4010, mailboxes 2 & 3 may
 809  * hold an address for data.  Make sure that we write 0 to those mailboxes,
 810  * if unused.
 811  **/
 812 int qla4xxx_get_fw_version(struct scsi_qla_host * ha)
 813 {
 814         uint32_t mbox_cmd[MBOX_REG_COUNT];
 815         uint32_t mbox_sts[MBOX_REG_COUNT];
 816
 817         /* Get firmware version. */
 818         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 819         memset(&mbox_sts, 0, sizeof(mbox_sts));
 820         mbox_cmd[0] = MBOX_CMD_ABOUT_FW;
 821         if (qla4xxx_mailbox_command(ha, 4, 5, &mbox_cmd[0], &mbox_sts[0]) !=
 822             QLA_SUCCESS) {
 823                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_ABOUT_FW failed w/ "
 824                     "status %04X\n", ha->host_no, __func__, mbox_sts[0]));
 825                 return QLA_ERROR;
 826         }
 827
 828         /* Save firmware version information. */
 829         ha->firmware_version[0] = mbox_sts[1];
 830         ha->firmware_version[1] = mbox_sts[2];
 831         ha->patch_number = mbox_sts[3];
 832         ha->build_number = mbox_sts[4];
 833
 834         return QLA_SUCCESS;
 835 }
 836
 837 int qla4xxx_get_default_ddb(struct scsi_qla_host *ha, dma_addr_t dma_addr)
 838 {
 839         uint32_t mbox_cmd[MBOX_REG_COUNT];
 840         uint32_t mbox_sts[MBOX_REG_COUNT];
 841
 842         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 843         memset(&mbox_sts, 0, sizeof(mbox_sts));
 844
 845         mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY_DEFAULTS;
 846         mbox_cmd[2] = LSDW(dma_addr);
 847         mbox_cmd[3] = MSDW(dma_addr);
 848
 849         if (qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]) !=
 850             QLA_SUCCESS) {
 851                 DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
 852                      ha->host_no, __func__, mbox_sts[0]));
 853                 return QLA_ERROR;
 854         }
 855         return QLA_SUCCESS;
 856 }
 857
 858 int qla4xxx_req_ddb_entry(struct scsi_qla_host *ha, uint32_t *ddb_index)
 859 {
 860         uint32_t mbox_cmd[MBOX_REG_COUNT];
 861         uint32_t mbox_sts[MBOX_REG_COUNT];
 862
 863         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
 864         memset(&mbox_sts, 0, sizeof(mbox_sts));
 865
 866         mbox_cmd[0] = MBOX_CMD_REQUEST_DATABASE_ENTRY;
 867         mbox_cmd[1] = MAX_PRST_DEV_DB_ENTRIES;
 868
 869         if (qla4xxx_mailbox_command(ha, 2, 3, &mbox_cmd[0], &mbox_sts[0]) !=
 870             QLA_SUCCESS) {
 871                 if (mbox_sts[0] == MBOX_STS_COMMAND_ERROR) {
 872                         *ddb_index = mbox_sts[2];
 873                 } else {
 874                         DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
 875                              ha->host_no, __func__, mbox_sts[0]));
 876                         return QLA_ERROR;
 877                 }
 878         } else {
 879                 *ddb_index = MAX_PRST_DEV_DB_ENTRIES;
 880         }
 881
 882         return QLA_SUCCESS;
 883 }
 884
 885
 886 int qla4xxx_send_tgts(struct scsi_qla_host *ha, char *ip, uint16_t port)
 887 {
 888         struct dev_db_entry *fw_ddb_entry;
 889         dma_addr_t fw_ddb_entry_dma;
 890         uint32_t ddb_index;
 891         int ret_val = QLA_SUCCESS;
 892
 893
 894         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
 895                                           sizeof(*fw_ddb_entry),
 896                                           &fw_ddb_entry_dma, GFP_KERNEL);
 897         if (!fw_ddb_entry) {
 898                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
 899                               ha->host_no, __func__));
 900                 ret_val = QLA_ERROR;
 901                 goto qla4xxx_send_tgts_exit;
 902         }
 903
 904         ret_val = qla4xxx_get_default_ddb(ha, fw_ddb_entry_dma);
 905         if (ret_val != QLA_SUCCESS)
 906                 goto qla4xxx_send_tgts_exit;
 907
 908         ret_val = qla4xxx_req_ddb_entry(ha, &ddb_index);
 909         if (ret_val != QLA_SUCCESS)
 910                 goto qla4xxx_send_tgts_exit;
 911
 912         memset((void *)fw_ddb_entry->iSCSIAlias, 0,
 913                sizeof(fw_ddb_entry->iSCSIAlias));
 914
 915         memset((void *)fw_ddb_entry->iscsiName, 0,
 916                sizeof(fw_ddb_entry->iscsiName));
 917
 918         memset((void *)fw_ddb_entry->ipAddr, 0, sizeof(fw_ddb_entry->ipAddr));
 919         memset((void *)fw_ddb_entry->targetAddr, 0,
 920                sizeof(fw_ddb_entry->targetAddr));
 921
 922         fw_ddb_entry->options = (DDB_OPT_DISC_SESSION | DDB_OPT_TARGET);
 923         fw_ddb_entry->portNumber = cpu_to_le16(ntohs(port));
 924
 925         fw_ddb_entry->ipAddr[0] = *ip;
 926         fw_ddb_entry->ipAddr[1] = *(ip + 1);
 927         fw_ddb_entry->ipAddr[2] = *(ip + 2);
 928         fw_ddb_entry->ipAddr[3] = *(ip + 3);
 929
 930         ret_val = qla4xxx_set_ddb_entry(ha, ddb_index, fw_ddb_entry_dma);
 931
 932 qla4xxx_send_tgts_exit:
 933         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
 934                           fw_ddb_entry, fw_ddb_entry_dma);
 935         return ret_val;
 936 }
 937