5017 use 64bit DMA in mpt_sas

[illumos-gate.git] / usr / src / uts / common / io / scsi / adapters / mpt_sas / mptsas_raid.c

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 * Copyright (c) 2014, Tegile Systems Inc. All rights reserved.
 */

/*
 * Copyright (c) 2000 to 2010, LSI Corporation.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms of all code within
 * this file that is exclusively owned by LSI, with or without
 * modification, is permitted provided that, in addition to the CDDL 1.0
 * License requirements, the following conditions are met:
 *
 *    Neither the name of the author nor the names of its contributors may be
 *    used to endorse or promote products derived from this software without
 *    specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */

/*
 * mptsas_raid - This file contains all the RAID related functions for the
 * MPT interface.
 */

#if defined(lint) || defined(DEBUG)
#define MPTSAS_DEBUG
#endif

#define MPI_RAID_VOL_PAGE_0_PHYSDISK_MAX        2

/*
 * standard header files
 */
#include <sys/note.h>
#include <sys/scsi/scsi.h>
#include <sys/byteorder.h>
#include <sys/raidioctl.h>

#pragma pack(1)

#include <sys/scsi/adapters/mpt_sas/mpi/mpi2_type.h>
#include <sys/scsi/adapters/mpt_sas/mpi/mpi2.h>
#include <sys/scsi/adapters/mpt_sas/mpi/mpi2_cnfg.h>
#include <sys/scsi/adapters/mpt_sas/mpi/mpi2_init.h>
#include <sys/scsi/adapters/mpt_sas/mpi/mpi2_ioc.h>
#include <sys/scsi/adapters/mpt_sas/mpi/mpi2_raid.h>
#include <sys/scsi/adapters/mpt_sas/mpi/mpi2_tool.h>

#pragma pack()

/*
 * private header files.
 */
#include <sys/scsi/adapters/mpt_sas/mptsas_var.h>

static int mptsas_get_raid_wwid(mptsas_t *mpt, mptsas_raidvol_t *raidvol);

extern int mptsas_check_dma_handle(ddi_dma_handle_t handle);
extern int mptsas_check_acc_handle(ddi_acc_handle_t handle);
extern mptsas_target_t *mptsas_tgt_alloc(mptsas_t *, uint16_t,
    uint64_t, uint32_t, mptsas_phymask_t, uint8_t);

static int
mptsas_raidconf_page_0_cb(mptsas_t *mpt, caddr_t page_memp,
    ddi_acc_handle_t accessp, uint16_t iocstatus, uint32_t iocloginfo,
    va_list ap)
{
#ifndef __lock_lint
        _NOTE(ARGUNUSED(ap))
#endif
        pMpi2RaidConfigurationPage0_t   raidconfig_page0;
        pMpi2RaidConfig0ConfigElement_t element;
        uint32_t *confignum;
        int rval = DDI_SUCCESS, i;
        uint8_t numelements, vol, disk;
        uint16_t elementtype, voldevhandle;
        uint16_t etype_vol, etype_pd, etype_hs;
        uint16_t etype_oce;
        m_raidconfig_t *raidconfig;
        uint64_t raidwwn;
        uint32_t native;
        mptsas_target_t *ptgt;
        uint32_t configindex;

        if (iocstatus == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE) {
                return (DDI_FAILURE);
        }

        if (iocstatus != MPI2_IOCSTATUS_SUCCESS) {
                mptsas_log(mpt, CE_WARN, "mptsas_get_raid_conf_page0 "
                    "config: IOCStatus=0x%x, IOCLogInfo=0x%x",
                    iocstatus, iocloginfo);
                rval = DDI_FAILURE;
                return (rval);
        }
        confignum = va_arg(ap,  uint32_t *);
        configindex = va_arg(ap, uint32_t);
        raidconfig_page0 = (pMpi2RaidConfigurationPage0_t)page_memp;
        /*
         * Get all RAID configurations.
         */
        etype_vol = MPI2_RAIDCONFIG0_EFLAGS_VOLUME_ELEMENT;
        etype_pd = MPI2_RAIDCONFIG0_EFLAGS_VOL_PHYS_DISK_ELEMENT;
        etype_hs = MPI2_RAIDCONFIG0_EFLAGS_HOT_SPARE_ELEMENT;
        etype_oce = MPI2_RAIDCONFIG0_EFLAGS_OCE_ELEMENT;
        /*
         * Set up page address for next time through.
         */
        *confignum =  ddi_get8(accessp,
            &raidconfig_page0->ConfigNum);

        /*
         * Point to the right config in the structure.
         * Increment the number of valid RAID configs.
         */
        raidconfig = &mpt->m_raidconfig[configindex];
        mpt->m_num_raid_configs++;

        /*
         * Set the native flag if this is not a foreign
         * configuration.
         */
        native = ddi_get32(accessp, &raidconfig_page0->Flags);
        if (native & MPI2_RAIDCONFIG0_FLAG_FOREIGN_CONFIG) {
                native = FALSE;
        } else {
                native = TRUE;
        }
        raidconfig->m_native = (uint8_t)native;

        /*
         * Get volume information for the volumes in the
         * config.
         */
        numelements = ddi_get8(accessp, &raidconfig_page0->NumElements);
        vol = 0;
        disk = 0;
        element = (pMpi2RaidConfig0ConfigElement_t)
            &raidconfig_page0->ConfigElement;

        for (i = 0; ((i < numelements) && native); i++, element++) {
                /*
                 * Get the element type.  Could be Volume,
                 * PhysDisk, Hot Spare, or Online Capacity
                 * Expansion PhysDisk.
                 */
                elementtype = ddi_get16(accessp, &element->ElementFlags);
                elementtype &= MPI2_RAIDCONFIG0_EFLAGS_MASK_ELEMENT_TYPE;

                /*
                 * For volumes, get the RAID settings and the
                 * WWID.
                 */
                if (elementtype == etype_vol) {
                        voldevhandle = ddi_get16(accessp,
                            &element->VolDevHandle);
                        raidconfig->m_raidvol[vol].m_israid = 1;
                        raidconfig->m_raidvol[vol].
                            m_raidhandle = voldevhandle;
                        /*
                         * Get the settings for the raid
                         * volume.  This includes the
                         * DevHandles for the disks making up
                         * the raid volume.
                         */
                        if (mptsas_get_raid_settings(mpt,
                            &raidconfig->m_raidvol[vol]))
                                continue;

                        /*
                         * Get the WWID of the RAID volume for
                         * SAS HBA
                         */
                        if (mptsas_get_raid_wwid(mpt,
                            &raidconfig->m_raidvol[vol]))
                                continue;

                        raidwwn = raidconfig->m_raidvol[vol].
                            m_raidwwid;

                        /*
                         * RAID uses phymask of 0.
                         */
                        ptgt = mptsas_tgt_alloc(mpt,
                            voldevhandle, raidwwn, 0, 0, 0);

                        raidconfig->m_raidvol[vol].m_raidtgt =
                            ptgt;

                        /*
                         * Increment volume index within this
                         * raid config.
                         */
                        vol++;
                } else if ((elementtype == etype_pd) ||
                    (elementtype == etype_hs) ||
                    (elementtype == etype_oce)) {
                        /*
                         * For all other element types, put
                         * their DevHandles in the phys disk
                         * list of the config.  These are all
                         * some variation of a Phys Disk and
                         * this list is used to keep these
                         * disks from going online.
                         */
                        raidconfig->m_physdisk_devhdl[disk] = ddi_get16(accessp,
                            &element->PhysDiskDevHandle);

                        /*
                         * Increment disk index within this
                         * raid config.
                         */
                        disk++;
                }
        }

        return (rval);
}

int
mptsas_get_raid_info(mptsas_t *mpt)
{
        int rval = DDI_SUCCESS;
        uint32_t confignum, pageaddress;
        uint8_t configindex;

        ASSERT(mutex_owned(&mpt->m_mutex));

        /*
         * Clear all RAID info before starting.
         */
        bzero(mpt->m_raidconfig, sizeof (mpt->m_raidconfig));
        mpt->m_num_raid_configs = 0;

        configindex = 0;
        confignum = 0xff;
        pageaddress = MPI2_RAID_PGAD_FORM_GET_NEXT_CONFIGNUM | confignum;
        while (rval == DDI_SUCCESS) {
                /*
                 * Get the header and config page.  reply contains the reply
                 * frame, which holds status info for the request.
                 */
                rval = mptsas_access_config_page(mpt,
                    MPI2_CONFIG_ACTION_PAGE_READ_CURRENT,
                    MPI2_CONFIG_EXTPAGETYPE_RAID_CONFIG, 0, pageaddress,
                    mptsas_raidconf_page_0_cb, &confignum, configindex);
                configindex++;
                pageaddress = MPI2_RAID_PGAD_FORM_GET_NEXT_CONFIGNUM |
                    confignum;
        }

        return (rval);
}

static int
mptsas_raidvol_page_0_cb(mptsas_t *mpt, caddr_t page_memp,
    ddi_acc_handle_t accessp, uint16_t iocstatus, uint32_t iocloginfo,
    va_list ap)
{
#ifndef __lock_lint
        _NOTE(ARGUNUSED(ap))
#endif
        pMpi2RaidVolPage0_t raidpage;
        int rval = DDI_SUCCESS, i;
        mptsas_raidvol_t *raidvol;
        uint8_t numdisks, volstate, voltype, physdisknum;
        uint32_t volsetting;
        uint32_t statusflags, resync_flag;

        if (iocstatus == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
                return (DDI_FAILURE);

        if (iocstatus != MPI2_IOCSTATUS_SUCCESS) {
                mptsas_log(mpt, CE_WARN, "mptsas_raidvol_page0_cb "
                    "config: IOCStatus=0x%x, IOCLogInfo=0x%x",
                    iocstatus, iocloginfo);
                rval = DDI_FAILURE;
                return (rval);
        }

        raidvol = va_arg(ap,  mptsas_raidvol_t *);

        raidpage = (pMpi2RaidVolPage0_t)page_memp;
        volstate = ddi_get8(accessp, &raidpage->VolumeState);
        volsetting = ddi_get32(accessp,
            (uint32_t *)(void *)&raidpage->VolumeSettings);
        statusflags = ddi_get32(accessp, &raidpage->VolumeStatusFlags);
        voltype = ddi_get8(accessp, &raidpage->VolumeType);

        raidvol->m_state = volstate;
        raidvol->m_statusflags = statusflags;
        /*
         * Volume size is not used right now. Set to 0.
         */
        raidvol->m_raidsize = 0;
        raidvol->m_settings = volsetting;
        raidvol->m_raidlevel = voltype;

        if (statusflags & MPI2_RAIDVOL0_STATUS_FLAG_QUIESCED) {
                mptsas_log(mpt, CE_NOTE, "?Volume %d is quiesced\n",
                    raidvol->m_raidhandle);
        }

        if (statusflags &
            MPI2_RAIDVOL0_STATUS_FLAG_RESYNC_IN_PROGRESS) {
                mptsas_log(mpt, CE_NOTE, "?Volume %d is resyncing\n",
                    raidvol->m_raidhandle);
        }

        resync_flag = MPI2_RAIDVOL0_STATUS_FLAG_RESYNC_IN_PROGRESS;
        switch (volstate) {
        case MPI2_RAID_VOL_STATE_OPTIMAL:
                mptsas_log(mpt, CE_NOTE, "?Volume %d is "
                    "optimal\n", raidvol->m_raidhandle);
                break;
        case MPI2_RAID_VOL_STATE_DEGRADED:
                if ((statusflags & resync_flag) == 0) {
                        mptsas_log(mpt, CE_WARN, "Volume %d "
                            "is degraded\n",
                            raidvol->m_raidhandle);
                }
                break;
        case MPI2_RAID_VOL_STATE_FAILED:
                mptsas_log(mpt, CE_WARN, "Volume %d is "
                    "failed\n", raidvol->m_raidhandle);
                break;
        case MPI2_RAID_VOL_STATE_MISSING:
                mptsas_log(mpt, CE_WARN, "Volume %d is "
                    "missing\n", raidvol->m_raidhandle);
                break;
        default:
                break;
        }
        numdisks = raidpage->NumPhysDisks;
        raidvol->m_ndisks = numdisks;
        for (i = 0; i < numdisks; i++) {
                physdisknum = raidpage->PhysDisk[i].PhysDiskNum;
                raidvol->m_disknum[i] = physdisknum;
                if (mptsas_get_physdisk_settings(mpt, raidvol,
                    physdisknum))
                        break;
        }
        return (rval);
}

int
mptsas_get_raid_settings(mptsas_t *mpt, mptsas_raidvol_t *raidvol)
{
        int rval = DDI_SUCCESS;
        uint32_t page_address;

        ASSERT(mutex_owned(&mpt->m_mutex));

        /*
         * Get the header and config page.  reply contains the reply frame,
         * which holds status info for the request.
         */
        page_address = (MPI2_RAID_VOLUME_PGAD_FORM_MASK &
            MPI2_RAID_VOLUME_PGAD_FORM_HANDLE) | raidvol->m_raidhandle;
        rval = mptsas_access_config_page(mpt,
            MPI2_CONFIG_ACTION_PAGE_READ_CURRENT,
            MPI2_CONFIG_PAGETYPE_RAID_VOLUME, 0, page_address,
            mptsas_raidvol_page_0_cb, raidvol);

        return (rval);
}

static int
mptsas_raidvol_page_1_cb(mptsas_t *mpt, caddr_t page_memp,
    ddi_acc_handle_t accessp, uint16_t iocstatus, uint32_t iocloginfo,
    va_list ap)
{
#ifndef __lock_lint
        _NOTE(ARGUNUSED(ap))
#endif
        pMpi2RaidVolPage1_t     raidpage;
        int                     rval = DDI_SUCCESS, i;
        uint8_t                 *sas_addr = NULL;
        uint8_t                 tmp_sas_wwn[SAS_WWN_BYTE_SIZE];
        uint64_t                *sas_wwn;

        if (iocstatus != MPI2_IOCSTATUS_SUCCESS) {
                mptsas_log(mpt, CE_WARN, "mptsas_raidvol_page_1_cb "
                    "config: IOCStatus=0x%x, IOCLogInfo=0x%x",
                    iocstatus, iocloginfo);
                rval = DDI_FAILURE;
                return (rval);
        }
        sas_wwn = va_arg(ap, uint64_t *);

        raidpage = (pMpi2RaidVolPage1_t)page_memp;
        sas_addr = (uint8_t *)(&raidpage->WWID);
        for (i = 0; i < SAS_WWN_BYTE_SIZE; i++) {
                tmp_sas_wwn[i] = ddi_get8(accessp, sas_addr + i);
        }
        bcopy(tmp_sas_wwn, sas_wwn, SAS_WWN_BYTE_SIZE);
        *sas_wwn = LE_64(*sas_wwn);
        return (rval);
}

static int
mptsas_get_raid_wwid(mptsas_t *mpt, mptsas_raidvol_t *raidvol)
{
        int rval = DDI_SUCCESS;
        uint32_t page_address;
        uint64_t sas_wwn;

        ASSERT(mutex_owned(&mpt->m_mutex));

        /*
         * Get the header and config page.  reply contains the reply frame,
         * which holds status info for the request.
         */
        page_address = (MPI2_RAID_VOLUME_PGAD_FORM_MASK &
            MPI2_RAID_VOLUME_PGAD_FORM_HANDLE) | raidvol->m_raidhandle;
        rval = mptsas_access_config_page(mpt,
            MPI2_CONFIG_ACTION_PAGE_READ_CURRENT,
            MPI2_CONFIG_PAGETYPE_RAID_VOLUME, 1, page_address,
            mptsas_raidvol_page_1_cb, &sas_wwn);

        /*
         * Get the required information from the page.
         */
        if (rval == DDI_SUCCESS) {

                /*
                 * replace top nibble of WWID of RAID to '3' for OBP
                 */
                sas_wwn = MPTSAS_RAID_WWID(sas_wwn);
                raidvol->m_raidwwid = sas_wwn;
        }

        return (rval);
}

static int
mptsas_raidphydsk_page_0_cb(mptsas_t *mpt, caddr_t page_memp,
    ddi_acc_handle_t accessp, uint16_t iocstatus, uint32_t iocloginfo,
    va_list ap)
{
#ifndef __lock_lint
        _NOTE(ARGUNUSED(ap))
#endif
        pMpi2RaidPhysDiskPage0_t        diskpage;
        int                     rval = DDI_SUCCESS;
        uint16_t                *devhdl;
        uint8_t                 *state;

        if (iocstatus == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
                return (DDI_FAILURE);

        if (iocstatus != MPI2_IOCSTATUS_SUCCESS) {
                mptsas_log(mpt, CE_WARN, "mptsas_raidphydsk_page0_cb "
                    "config: IOCStatus=0x%x, IOCLogInfo=0x%x",
                    iocstatus, iocloginfo);
                rval = DDI_FAILURE;
                return (rval);
        }
        devhdl = va_arg(ap, uint16_t *);
        state = va_arg(ap, uint8_t *);
        diskpage = (pMpi2RaidPhysDiskPage0_t)page_memp;
        *devhdl = ddi_get16(accessp, &diskpage->DevHandle);
        *state = ddi_get8(accessp, &diskpage->PhysDiskState);
        return (rval);
}

int
mptsas_get_physdisk_settings(mptsas_t *mpt, mptsas_raidvol_t *raidvol,
    uint8_t physdisknum)
{
        int                     rval = DDI_SUCCESS, i;
        uint8_t                 state;
        uint16_t                devhdl;
        uint32_t                page_address;

        ASSERT(mutex_owned(&mpt->m_mutex));

        /*
         * Get the header and config page.  reply contains the reply frame,
         * which holds status info for the request.
         */
        page_address = (MPI2_PHYSDISK_PGAD_FORM_MASK &
            MPI2_PHYSDISK_PGAD_FORM_PHYSDISKNUM) | physdisknum;
        rval = mptsas_access_config_page(mpt,
            MPI2_CONFIG_ACTION_PAGE_READ_CURRENT,
            MPI2_CONFIG_PAGETYPE_RAID_PHYSDISK, 0, page_address,
            mptsas_raidphydsk_page_0_cb, &devhdl, &state);

        /*
         * Get the required information from the page.
         */
        if (rval == DDI_SUCCESS) {
                for (i = 0; i < MPTSAS_MAX_DISKS_IN_VOL; i++) {
                        /* find the correct position in the arrays */
                        if (raidvol->m_disknum[i] == physdisknum)
                                break;
                }
                raidvol->m_devhdl[i] = devhdl;

                switch (state) {
                        case MPI2_RAID_PD_STATE_OFFLINE:
                                raidvol->m_diskstatus[i] =
                                    RAID_DISKSTATUS_FAILED;
                                break;

                        case MPI2_RAID_PD_STATE_HOT_SPARE:
                        case MPI2_RAID_PD_STATE_NOT_CONFIGURED:
                        case MPI2_RAID_PD_STATE_NOT_COMPATIBLE:
                                break;

                        case MPI2_RAID_PD_STATE_DEGRADED:
                        case MPI2_RAID_PD_STATE_OPTIMAL:
                        case MPI2_RAID_PD_STATE_REBUILDING:
                        case MPI2_RAID_PD_STATE_ONLINE:
                        default:
                                raidvol->m_diskstatus[i] =
                                    RAID_DISKSTATUS_GOOD;
                                break;
                }
        }

        return (rval);
}

/*
 * RAID Action for System Shutdown. This request uses the dedicated TM slot to
 * avoid a call to mptsas_save_cmd.  Since Solaris requires that the mutex is
 * not held during the mptsas_quiesce function, this RAID action must not use
 * the normal code path of requests and replies.
 */
void
mptsas_raid_action_system_shutdown(mptsas_t *mpt)
{
        pMpi2RaidActionRequest_t        action;
        uint8_t                         ir_active = FALSE, reply_type;
        uint8_t                         function, found_reply = FALSE;
        uint16_t                        SMID, action_type;
        mptsas_slots_t                  *slots = mpt->m_active;
        int                             config, vol;
        mptsas_cmd_t                    *cmd;
        uint32_t                        reply_addr;
        uint64_t                        request_desc;
        int                             cnt;
        pMpi2ReplyDescriptorsUnion_t    reply_desc_union;
        pMPI2DefaultReply_t             reply;
        pMpi2AddressReplyDescriptor_t   address_reply;

        /*
         * Before doing the system shutdown RAID Action, make sure that the IOC
         * supports IR and make sure there is a valid volume for the request.
         */
        if (mpt->m_ir_capable) {
                for (config = 0; (config < mpt->m_num_raid_configs) &&
                    (!ir_active); config++) {
                        for (vol = 0; vol < MPTSAS_MAX_RAIDVOLS; vol++) {
                                if (mpt->m_raidconfig[config].m_raidvol[vol].
                                    m_israid) {
                                        ir_active = TRUE;
                                        break;
                                }
                        }
                }
        }
        if (!ir_active) {
                return;
        }

        /*
         * If TM slot is already being used (highly unlikely), show message and
         * don't issue the RAID action.
         */
        if (slots->m_slot[MPTSAS_TM_SLOT(mpt)] != NULL) {
                mptsas_log(mpt, CE_WARN, "RAID Action slot in use.  Cancelling"
                    " System Shutdown RAID Action.\n");
                return;
        }

        /*
         * Create the cmd and put it in the dedicated TM slot.
         */
        cmd = &(mpt->m_event_task_mgmt.m_event_cmd);
        bzero((caddr_t)cmd, sizeof (*cmd));
        cmd->cmd_pkt = NULL;
        cmd->cmd_slot = MPTSAS_TM_SLOT(mpt);
        slots->m_slot[MPTSAS_TM_SLOT(mpt)] = cmd;

        /*
         * Form message for raid action.
         */
        action = (pMpi2RaidActionRequest_t)(mpt->m_req_frame +
            (mpt->m_req_frame_size * cmd->cmd_slot));
        bzero(action, mpt->m_req_frame_size);
        action->Function = MPI2_FUNCTION_RAID_ACTION;
        action->Action = MPI2_RAID_ACTION_SYSTEM_SHUTDOWN_INITIATED;

        /*
         * Send RAID Action.
         */
        (void) ddi_dma_sync(mpt->m_dma_req_frame_hdl, 0, 0,
            DDI_DMA_SYNC_FORDEV);
        request_desc = (cmd->cmd_slot << 16) +
            MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
        MPTSAS_START_CMD(mpt, request_desc);

        /*
         * Even though reply does not matter because the system is shutting
         * down, wait no more than 5 seconds here to get the reply just because
         * we don't want to leave it hanging if it's coming.  Poll because
         * interrupts are disabled when this function is called.
         */
        for (cnt = 0; cnt < 5000; cnt++) {
                /*
                 * Check for a reply.
                 */
                (void) ddi_dma_sync(mpt->m_dma_post_queue_hdl, 0, 0,
                    DDI_DMA_SYNC_FORCPU);

                reply_desc_union = (pMpi2ReplyDescriptorsUnion_t)
                    MPTSAS_GET_NEXT_REPLY(mpt, mpt->m_post_index);

                if (ddi_get32(mpt->m_acc_post_queue_hdl,
                    &reply_desc_union->Words.Low) == 0xFFFFFFFF ||
                    ddi_get32(mpt->m_acc_post_queue_hdl,
                    &reply_desc_union->Words.High) == 0xFFFFFFFF) {
                        drv_usecwait(1000);
                        continue;
                }

                /*
                 * There is a reply.  If it's not an address reply, ignore it.
                 */
                reply_type = ddi_get8(mpt->m_acc_post_queue_hdl,
                    &reply_desc_union->Default.ReplyFlags);
                reply_type &= MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
                if (reply_type != MPI2_RPY_DESCRIPT_FLAGS_ADDRESS_REPLY) {
                        goto clear_and_continue;
                }

                /*
                 * SMID must be the TM slot since that's what we're using for
                 * this RAID action.  If not, ignore this reply.
                 */
                address_reply =
                    (pMpi2AddressReplyDescriptor_t)reply_desc_union;
                SMID = ddi_get16(mpt->m_acc_post_queue_hdl,
                    &address_reply->SMID);
                if (SMID != MPTSAS_TM_SLOT(mpt)) {
                        goto clear_and_continue;
                }

                /*
                 * If reply frame is not in the proper range ignore it.
                 */
                reply_addr = ddi_get32(mpt->m_acc_post_queue_hdl,
                    &address_reply->ReplyFrameAddress);
                if ((reply_addr < mpt->m_reply_frame_dma_addr) ||
                    (reply_addr >= (mpt->m_reply_frame_dma_addr +
                    (mpt->m_reply_frame_size * mpt->m_free_queue_depth))) ||
                    ((reply_addr - mpt->m_reply_frame_dma_addr) %
                    mpt->m_reply_frame_size != 0)) {
                        goto clear_and_continue;
                }

                /*
                 * If not a RAID action reply ignore it.
                 */
                (void) ddi_dma_sync(mpt->m_dma_reply_frame_hdl, 0, 0,
                    DDI_DMA_SYNC_FORCPU);
                reply = (pMPI2DefaultReply_t)(mpt->m_reply_frame +
                    (reply_addr - mpt->m_reply_frame_dma_addr));
                function = ddi_get8(mpt->m_acc_reply_frame_hdl,
                    &reply->Function);
                if (function != MPI2_FUNCTION_RAID_ACTION) {
                        goto clear_and_continue;
                }

                /*
                 * Finally, make sure this is the System Shutdown RAID action.
                 * If not, ignore reply.
                 */
                action_type = ddi_get16(mpt->m_acc_reply_frame_hdl,
                    &reply->FunctionDependent1);
                if (action_type !=
                    MPI2_RAID_ACTION_SYSTEM_SHUTDOWN_INITIATED) {
                        goto clear_and_continue;
                }
                found_reply = TRUE;

clear_and_continue:
                /*
                 * Clear the reply descriptor for re-use and increment index.
                 */
                ddi_put64(mpt->m_acc_post_queue_hdl,
                    &((uint64_t *)(void *)mpt->m_post_queue)[mpt->m_post_index],
                    0xFFFFFFFFFFFFFFFF);
                (void) ddi_dma_sync(mpt->m_dma_post_queue_hdl, 0, 0,
                    DDI_DMA_SYNC_FORDEV);

                /*
                 * Update the global reply index and keep looking for the
                 * reply if not found yet.
                 */
                if (++mpt->m_post_index == mpt->m_post_queue_depth) {
                        mpt->m_post_index = 0;
                }
                ddi_put32(mpt->m_datap, &mpt->m_reg->ReplyPostHostIndex,
                    mpt->m_post_index);
                if (!found_reply) {
                        continue;
                }

                break;
        }

        /*
         * clear the used slot as the last step.
         */
        slots->m_slot[MPTSAS_TM_SLOT(mpt)] = NULL;
}

int
mptsas_delete_volume(mptsas_t *mpt, uint16_t volid)
{
        int             config, i = 0, vol = (-1);

        for (config = 0; (config < mpt->m_num_raid_configs) && (vol != i);
            config++) {
                for (i = 0; i < MPTSAS_MAX_RAIDVOLS; i++) {
                        if (mpt->m_raidconfig[config].m_raidvol[i].
                            m_raidhandle == volid) {
                                vol = i;
                                break;
                        }
                }
        }

        if (vol < 0) {
                mptsas_log(mpt, CE_WARN, "raid doesn't exist at specified "
                    "target.");
                return (-1);
        }

        mpt->m_raidconfig[config].m_raidvol[vol].m_israid = 0;
        mpt->m_raidconfig[config].m_raidvol[vol].m_ndisks = 0;
        for (i = 0; i < MPTSAS_MAX_DISKS_IN_VOL; i++) {
                mpt->m_raidconfig[config].m_raidvol[vol].m_disknum[i] = 0;
                mpt->m_raidconfig[config].m_raidvol[vol].m_devhdl[i] = 0;
        }

        return (0);
}