/*
********************************************************************************
**        OS    : FreeBSD
**   FILE NAME  : arcmsr.c
**        BY    : Erich Chen, Ching Huang
**   Description: SCSI RAID Device Driver for
**                ARECA (ARC11XX/ARC12XX/ARC13XX/ARC16XX/ARC188x)
**                SATA/SAS RAID HOST Adapter
********************************************************************************
********************************************************************************
**
** Copyright (C) 2002 - 2012, Areca Technology Corporation All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
** 1. Redistributions of source code must retain the above copyright
**    notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
**    notice, this list of conditions and the following disclaimer in the
**    documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
**    derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
********************************************************************************
** History
**
**    REV#         DATE         NAME        DESCRIPTION
** 1.00.00.00   03/31/2004  Erich Chen      First release
** 1.20.00.02   11/29/2004  Erich Chen      bug fix with arcmsr_bus_reset when PHY error
** 1.20.00.03   04/19/2005  Erich Chen      add SATA 24 Ports adapter type support
**                                          clean unused function
** 1.20.00.12   09/12/2005  Erich Chen      bug fix with abort command handling,
**                                          firmware version check
**                                          and firmware update notify for hardware bug fix
**                                          handling if none zero high part physical address
**                                          of srb resource
** 1.20.00.13   08/18/2006  Erich Chen      remove pending srb and report busy
**                                          add iop message xfer
**                                          with scsi pass-through command
**                                          add new device id of sas raid adapters
**                                          code fit for SPARC64 & PPC
** 1.20.00.14   02/05/2007  Erich Chen      bug fix for incorrect ccb_h.status report
**                                          and cause g_vfs_done() read write error
** 1.20.00.15   10/10/2007  Erich Chen      support new RAID adapter type ARC120x
** 1.20.00.16   10/10/2009  Erich Chen      Bug fix for RAID adapter type ARC120x
**                                          bus_dmamem_alloc() with BUS_DMA_ZERO
** 1.20.00.17   07/15/2010  Ching Huang     Added support ARC1880
**                                          report CAM_DEV_NOT_THERE instead of CAM_SEL_TIMEOUT when device failed,
**                                          prevent cam_periph_error removing all LUN devices of one Target id
**                                          for any one LUN device failed
** 1.20.00.18   10/14/2010  Ching Huang     Fixed "inquiry data fails comparion at DV1 step"
**              10/25/2010  Ching Huang     Fixed bad range input in bus_alloc_resource for ADAPTER_TYPE_B
** 1.20.00.19   11/11/2010  Ching Huang     Fixed arcmsr driver prevent arcsas support for Areca SAS HBA ARC13x0
** 1.20.00.20   12/08/2010  Ching Huang     Avoid calling atomic_set_int function
** 1.20.00.21   02/08/2011  Ching Huang     Implement I/O request timeout
**              02/14/2011  Ching Huang     Modified pktRequestCount
** 1.20.00.21   03/03/2011  Ching Huang     if a command timeout, then wait its ccb back before free it
** 1.20.00.22   07/04/2011  Ching Huang     Fixed multiple MTX panic
** 1.20.00.23   10/28/2011  Ching Huang     Added TIMEOUT_DELAY in case of too many HDDs need to start
** 1.20.00.23   11/08/2011  Ching Huang     Added report device transfer speed
** 1.20.00.23   01/30/2012  Ching Huang     Fixed Request requeued and Retrying command
** 1.20.00.24   06/11/2012  Ching Huang     Fixed return sense data condition
** 1.20.00.25   08/17/2012  Ching Huang     Fixed hotplug device no function on type A adapter
** 1.20.00.26   12/14/2012  Ching Huang     Added support ARC1214,1224,1264,1284
** 1.20.00.27   05/06/2013  Ching Huang     Fixed out standing cmd full on ARC-12x4
** 1.20.00.28   09/13/2013  Ching Huang     Removed recursive mutex in arcmsr_abort_dr_ccbs
** 1.20.00.29   12/18/2013  Ching Huang     Change simq allocation number, support ARC1883
** 1.30.00.00   11/30/2015  Ching Huang     Added support ARC1203
** 1.40.00.00   10/26/2017  Ching Huang     Added support ARC1884
******************************************************************************************
* $FreeBSD: head/sys/dev/arcmsr/arcmsr.c 259565 2013-12-18 19:25:40Z delphij $
*/
#if 0
#define ARCMSR_DEBUG1           1
#endif
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/queue.h>
#include <sys/stat.h>
#include <sys/kthread.h>
#include <sys/module.h>
#include <sys/proc.h>
#include <sys/lock.h>
#include <sys/sysctl.h>
#include <sys/thread2.h>
#include <sys/poll.h>
#include <sys/device.h>
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/pmap.h>

#include <machine/atomic.h>
#include <sys/conf.h>
#include <sys/rman.h>

#include <bus/cam/cam.h>
#include <bus/cam/cam_ccb.h>
#include <bus/cam/cam_sim.h>
#include <bus/cam/cam_periph.h>
#include <bus/cam/cam_xpt_periph.h>
#include <bus/cam/cam_xpt_sim.h>
#include <bus/cam/cam_debug.h>
#include <bus/cam/scsi/scsi_all.h>
#include <bus/cam/scsi/scsi_message.h>
/*
**************************************************************************
**************************************************************************
*/
#include <sys/endian.h>
#include <bus/pci/pcivar.h>
#include <bus/pci/pcireg.h>

#define arcmsr_callout_init(a)  callout_init_mp(a);

#define ARCMSR_DRIVER_VERSION   "arcmsr version 1.40.00.00 2017-10-26"
#include <dev/raid/arcmsr/arcmsr.h>
/*
**************************************************************************
**************************************************************************
*/
static void arcmsr_free_srb(struct CommandControlBlock *srb);
static struct CommandControlBlock *arcmsr_get_freesrb(struct AdapterControlBlock *acb);
static u_int8_t arcmsr_seek_cmd2abort(union ccb *abortccb);
static int arcmsr_probe(device_t dev);
static int arcmsr_attach(device_t dev);
static int arcmsr_detach(device_t dev);
static u_int32_t arcmsr_iop_ioctlcmd(struct AdapterControlBlock *acb, u_int32_t ioctl_cmd, caddr_t arg);
static void arcmsr_iop_parking(struct AdapterControlBlock *acb);
static int arcmsr_shutdown(device_t dev);
static void arcmsr_interrupt(struct AdapterControlBlock *acb);
static void arcmsr_polling_srbdone(struct AdapterControlBlock *acb, struct CommandControlBlock *poll_srb);
static void arcmsr_free_resource(struct AdapterControlBlock *acb);
static void arcmsr_bus_reset(struct AdapterControlBlock *acb);
static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb);
static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb);
static void arcmsr_iop_init(struct AdapterControlBlock *acb);
static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb);
static u_int32_t arcmsr_Read_iop_rqbuffer_data(struct AdapterControlBlock *acb, struct QBUFFER *prbuffer);
static void arcmsr_Write_data_2iop_wqbuffer(struct AdapterControlBlock *acb);
static void arcmsr_abort_allcmd(struct AdapterControlBlock *acb);
static void arcmsr_srb_complete(struct CommandControlBlock *srb, int stand_flag);
static void arcmsr_iop_reset(struct AdapterControlBlock *acb);
static void arcmsr_report_sense_info(struct CommandControlBlock *srb);
static void arcmsr_build_srb(struct CommandControlBlock *srb, bus_dma_segment_t *dm_segs, u_int32_t nseg);
static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, union ccb *pccb);
static int arcmsr_resume(device_t dev);
static int arcmsr_suspend(device_t dev);
static void arcmsr_rescanLun_cb(struct cam_periph *periph, union ccb *ccb);
static void arcmsr_polling_devmap(void *arg);
static void arcmsr_srb_timeout(void *arg);
static void arcmsr_hbd_postqueue_isr(struct AdapterControlBlock *acb);
static void arcmsr_hbe_postqueue_isr(struct AdapterControlBlock *acb);
static void arcmsr_teardown_intr(device_t dev, struct AdapterControlBlock *acb);
#ifdef ARCMSR_DEBUG1
static void arcmsr_dump_data(struct AdapterControlBlock *acb);
#endif
/*
**************************************************************************
**************************************************************************
*/
static void UDELAY(u_int32_t us) { DELAY(us); }
/*
**************************************************************************
**************************************************************************
*/
static bus_dmamap_callback_t arcmsr_map_free_srb;
static bus_dmamap_callback_t arcmsr_execute_srb;
/*
**************************************************************************
**************************************************************************
*/
static d_open_t arcmsr_open;
static d_close_t arcmsr_close;
static d_ioctl_t arcmsr_ioctl;

static device_method_t arcmsr_methods[]={
        DEVMETHOD(device_probe,         arcmsr_probe),
        DEVMETHOD(device_attach,        arcmsr_attach),
        DEVMETHOD(device_detach,        arcmsr_detach),
        DEVMETHOD(device_shutdown,      arcmsr_shutdown),
        DEVMETHOD(device_suspend,       arcmsr_suspend),
        DEVMETHOD(device_resume,        arcmsr_resume),
        DEVMETHOD(bus_print_child,      bus_generic_print_child),
        DEVMETHOD(bus_driver_added,     bus_generic_driver_added),
        DEVMETHOD_END
};

static driver_t arcmsr_driver={
        "arcmsr", arcmsr_methods, sizeof(struct AdapterControlBlock)
};

static devclass_t arcmsr_devclass;
DRIVER_MODULE(arcmsr, pci, arcmsr_driver, arcmsr_devclass, NULL, NULL);
MODULE_VERSION(arcmsr, 1);
MODULE_DEPEND(arcmsr, pci, 1, 1, 1);
MODULE_DEPEND(arcmsr, cam, 1, 1, 1);
#ifndef BUS_DMA_COHERENT
        #define BUS_DMA_COHERENT        0x04    /* hint: map memory in a coherent way */
#endif
static struct dev_ops arcmsr_ops = {
        { "arcmsr", 0, D_MPSAFE },
        .d_open    = arcmsr_open,       /* open     */
        .d_close   = arcmsr_close,      /* close    */
        .d_ioctl   = arcmsr_ioctl,      /* ioctl    */
};

static int      arcmsr_msi_enable = 1;
TUNABLE_INT("hw.arcmsr.msi.enable", &arcmsr_msi_enable);

/*
**************************************************************************
**************************************************************************
*/
static int
arcmsr_open(struct dev_open_args *ap)
{
        cdev_t dev = ap->a_head.a_dev;
        struct AdapterControlBlock *acb = dev->si_drv1;

        if(acb == NULL) {
                return ENXIO;
        }
        return (0);
}
/*
**************************************************************************
**************************************************************************
*/
static int
arcmsr_close(struct dev_close_args *ap)
{
        cdev_t dev = ap->a_head.a_dev;
        struct AdapterControlBlock *acb = dev->si_drv1;

        if(acb == NULL) {
                return ENXIO;
        }
        return 0;
}
/*
**************************************************************************
**************************************************************************
*/
static int
arcmsr_ioctl(struct dev_ioctl_args *ap)
{
        cdev_t dev = ap->a_head.a_dev;
        u_long ioctl_cmd = ap->a_cmd;
        caddr_t arg = ap->a_data;
        struct AdapterControlBlock *acb = dev->si_drv1;

        if(acb == NULL) {
                return ENXIO;
        }
        return (arcmsr_iop_ioctlcmd(acb, ioctl_cmd, arg));
}
/*
**********************************************************************
**********************************************************************
*/
static u_int32_t arcmsr_disable_allintr( struct AdapterControlBlock *acb)
{
        u_int32_t intmask_org = 0;

        switch (acb->adapter_type) {
        case ACB_ADAPTER_TYPE_A: {
                        /* disable all outbound interrupt */
                        intmask_org = CHIP_REG_READ32(HBA_MessageUnit, 0, outbound_intmask); /* disable outbound message0 int */
                        CHIP_REG_WRITE32(HBA_MessageUnit, 0, outbound_intmask, intmask_org|ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE);
                }
                break;
        case ACB_ADAPTER_TYPE_B: {
                        struct HBB_MessageUnit *phbbmu = (struct HBB_MessageUnit *)acb->pmu;
                        /* disable all outbound interrupt */
                        intmask_org = READ_CHIP_REG32(0, phbbmu->iop2drv_doorbell_mask)
                                                & (~ARCMSR_IOP2DRV_MESSAGE_CMD_DONE); /* disable outbound message0 int */
                        WRITE_CHIP_REG32(0, phbbmu->iop2drv_doorbell_mask, 0); /* disable all interrupt */
                }
                break;
        case ACB_ADAPTER_TYPE_C: {
                        /* disable all outbound interrupt */
                        intmask_org = CHIP_REG_READ32(HBC_MessageUnit, 0, host_int_mask)        ; /* disable outbound message0 int */
                        CHIP_REG_WRITE32(HBC_MessageUnit, 0, host_int_mask, intmask_org|ARCMSR_HBCMU_ALL_INTMASKENABLE);
                }
                break;
        case ACB_ADAPTER_TYPE_D: {
                        /* disable all outbound interrupt */
                        intmask_org = CHIP_REG_READ32(HBD_MessageUnit, 0, pcief0_int_enable)    ; /* disable outbound message0 int */
                        CHIP_REG_WRITE32(HBD_MessageUnit, 0, pcief0_int_enable, ARCMSR_HBDMU_ALL_INT_DISABLE);
                }
                break;
        case ACB_ADAPTER_TYPE_E: {
                        /* disable all outbound interrupt */
                        intmask_org = CHIP_REG_READ32(HBC_MessageUnit, 0, host_int_mask)        ; /* disable outbound message0 int */
                        CHIP_REG_WRITE32(HBE_MessageUnit, 0, host_int_mask, intmask_org | ARCMSR_HBEMU_ALL_INTMASKENABLE);
                }
                break;
        }
        return (intmask_org);
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_enable_allintr( struct AdapterControlBlock *acb, u_int32_t intmask_org)
{
        u_int32_t mask;

        switch (acb->adapter_type) {
        case ACB_ADAPTER_TYPE_A: {
                        /* enable outbound Post Queue, outbound doorbell Interrupt */
                        mask = ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE|ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE|ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE);
                        CHIP_REG_WRITE32(HBA_MessageUnit, 0, outbound_intmask, intmask_org & mask);
                        acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff;
                }
                break;
        case ACB_ADAPTER_TYPE_B: {
                        struct HBB_MessageUnit *phbbmu = (struct HBB_MessageUnit *)acb->pmu;
                        /* enable ARCMSR_IOP2DRV_MESSAGE_CMD_DONE */
                        mask = (ARCMSR_IOP2DRV_DATA_WRITE_OK|ARCMSR_IOP2DRV_DATA_READ_OK|ARCMSR_IOP2DRV_CDB_DONE|ARCMSR_IOP2DRV_MESSAGE_CMD_DONE);
                        WRITE_CHIP_REG32(0, phbbmu->iop2drv_doorbell_mask, intmask_org | mask); /*1=interrupt enable, 0=interrupt disable*/
                        acb->outbound_int_enable = (intmask_org | mask) & 0x0000000f;
                }
                break;
        case ACB_ADAPTER_TYPE_C: {
                        /* enable outbound Post Queue, outbound doorbell Interrupt */
                        mask = ~(ARCMSR_HBCMU_UTILITY_A_ISR_MASK | ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR_MASK | ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR_MASK);
                        CHIP_REG_WRITE32(HBC_MessageUnit, 0, host_int_mask, intmask_org & mask);
                        acb->outbound_int_enable = ~(intmask_org & mask) & 0x0000000f;
                }
                break;
        case ACB_ADAPTER_TYPE_D: {
                        /* enable outbound Post Queue, outbound doorbell Interrupt */
                        mask = ARCMSR_HBDMU_ALL_INT_ENABLE;
                        CHIP_REG_WRITE32(HBD_MessageUnit, 0, pcief0_int_enable, intmask_org | mask);
                        CHIP_REG_READ32(HBD_MessageUnit, 0, pcief0_int_enable);
                        acb->outbound_int_enable = mask;
                }
                break;
        case ACB_ADAPTER_TYPE_E: {
                        /* enable outbound Post Queue, outbound doorbell Interrupt */
                        mask = ~(ARCMSR_HBEMU_OUTBOUND_DOORBELL_ISR | ARCMSR_HBEMU_OUTBOUND_POSTQUEUE_ISR);
                        CHIP_REG_WRITE32(HBE_MessageUnit, 0, host_int_mask, intmask_org & mask);
                        acb->outbound_int_enable = ~(intmask_org & mask) & 0x0000000f;
                }
                break;
        }
}
/*
**********************************************************************
**********************************************************************
*/
static u_int8_t arcmsr_hba_wait_msgint_ready(struct AdapterControlBlock *acb)
{
        u_int32_t Index;
        u_int8_t Retries = 0x00;

        do {
                for(Index=0; Index < 100; Index++) {
                        if(CHIP_REG_READ32(HBA_MessageUnit, 0, outbound_intstatus) & ARCMSR_MU_OUTBOUND_MESSAGE0_INT) {
                                CHIP_REG_WRITE32(HBA_MessageUnit, 0, outbound_intstatus, ARCMSR_MU_OUTBOUND_MESSAGE0_INT);/*clear interrupt*/
                                return TRUE;
                        }
                        UDELAY(10000);
                }/*max 1 seconds*/
        }while(Retries++ < 20);/*max 20 sec*/
        return (FALSE);
}
/*
**********************************************************************
**********************************************************************
*/
static u_int8_t arcmsr_hbb_wait_msgint_ready(struct AdapterControlBlock *acb)
{
        u_int32_t Index;
        u_int8_t Retries = 0x00;
        struct HBB_MessageUnit *phbbmu = (struct HBB_MessageUnit *)acb->pmu;

        do {
                for(Index=0; Index < 100; Index++) {
                        if(READ_CHIP_REG32(0, phbbmu->iop2drv_doorbell) & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
                                WRITE_CHIP_REG32(0, phbbmu->iop2drv_doorbell, ARCMSR_MESSAGE_INT_CLEAR_PATTERN);/*clear interrupt*/
                                WRITE_CHIP_REG32(0, phbbmu->drv2iop_doorbell, ARCMSR_DRV2IOP_END_OF_INTERRUPT);
                                return TRUE;
                        }
                        UDELAY(10000);
                }/*max 1 seconds*/
        }while(Retries++ < 20);/*max 20 sec*/
        return (FALSE);
}
/*
**********************************************************************
**********************************************************************
*/
static u_int8_t arcmsr_hbc_wait_msgint_ready(struct AdapterControlBlock *acb)
{
        u_int32_t Index;
        u_int8_t Retries = 0x00;

        do {
                for(Index=0; Index < 100; Index++) {
                        if(CHIP_REG_READ32(HBC_MessageUnit, 0, outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
                                CHIP_REG_WRITE32(HBC_MessageUnit, 0, outbound_doorbell_clear, ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR);/*clear interrupt*/
                                return TRUE;
                        }
                        UDELAY(10000);
                }/*max 1 seconds*/
        }while(Retries++ < 20);/*max 20 sec*/
        return (FALSE);
}
/*
**********************************************************************
**********************************************************************
*/
static u_int8_t arcmsr_hbd_wait_msgint_ready(struct AdapterControlBlock *acb)
{
        u_int32_t Index;
        u_int8_t Retries = 0x00;

        do {
                for(Index=0; Index < 100; Index++) {
                        if(CHIP_REG_READ32(HBD_MessageUnit, 0, outbound_doorbell) & ARCMSR_HBDMU_IOP2DRV_MESSAGE_CMD_DONE) {
                                CHIP_REG_WRITE32(HBD_MessageUnit, 0, outbound_doorbell, ARCMSR_HBDMU_IOP2DRV_MESSAGE_CMD_DONE_CLEAR);/*clear interrupt*/
                                return TRUE;
                        }
                        UDELAY(10000);
                }/*max 1 seconds*/
        }while(Retries++ < 20);/*max 20 sec*/
        return (FALSE);
}
/*
**********************************************************************
**********************************************************************
*/
static u_int8_t arcmsr_hbe_wait_msgint_ready(struct AdapterControlBlock *acb)
{
        u_int32_t Index, read_doorbell;
        u_int8_t Retries = 0x00;

        do {
                for(Index=0; Index < 100; Index++) {
                        read_doorbell = CHIP_REG_READ32(HBE_MessageUnit, 0, iobound_doorbell);
                        if((read_doorbell ^ acb->in_doorbell) & ARCMSR_HBEMU_IOP2DRV_MESSAGE_CMD_DONE) {
                                CHIP_REG_WRITE32(HBE_MessageUnit, 0, host_int_status, 0);/*clear interrupt*/
                                acb->in_doorbell = read_doorbell;
                                return TRUE;
                        }
                        UDELAY(10000);
                }/*max 1 seconds*/
        }while(Retries++ < 20);/*max 20 sec*/
        return (FALSE);
}
/*
************************************************************************
************************************************************************
*/
static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb)
{
        int retry_count = 30;/* enlarge wait flush adapter cache time: 10 minute */

        CHIP_REG_WRITE32(HBA_MessageUnit, 0, inbound_msgaddr0, ARCMSR_INBOUND_MESG0_FLUSH_CACHE);
        do {
                if(arcmsr_hba_wait_msgint_ready(acb)) {
                        break;
                } else {
                        retry_count--;
                }
        }while(retry_count != 0);
}
/*
************************************************************************
************************************************************************
*/
static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb)
{
        int retry_count = 30;/* enlarge wait flush adapter cache time: 10 minute */
        struct HBB_MessageUnit *phbbmu = (struct HBB_MessageUnit *)acb->pmu;

        WRITE_CHIP_REG32(0, phbbmu->drv2iop_doorbell, ARCMSR_MESSAGE_FLUSH_CACHE);
        do {
                if(arcmsr_hbb_wait_msgint_ready(acb)) {
                        break;
                } else {
                        retry_count--;
                }
        }while(retry_count != 0);
}
/*
************************************************************************
************************************************************************
*/
static void arcmsr_flush_hbc_cache(struct AdapterControlBlock *acb)
{
        int retry_count = 30;/* enlarge wait flush adapter cache time: 10 minute */

        CHIP_REG_WRITE32(HBC_MessageUnit, 0, inbound_msgaddr0, ARCMSR_INBOUND_MESG0_FLUSH_CACHE);
        CHIP_REG_WRITE32(HBC_MessageUnit, 0, inbound_doorbell, ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE);
        do {
                if(arcmsr_hbc_wait_msgint_ready(acb)) {
                        break;
                } else {
                        retry_count--;
                }
        }while(retry_count != 0);
}
/*
************************************************************************
************************************************************************
*/
static void arcmsr_flush_hbd_cache(struct AdapterControlBlock *acb)
{
        int retry_count = 30; /* enlarge wait flush adapter cache time: 10 minute */

        CHIP_REG_WRITE32(HBD_MessageUnit, 0, inbound_msgaddr0, ARCMSR_INBOUND_MESG0_FLUSH_CACHE);
        do {
                if(arcmsr_hbd_wait_msgint_ready(acb)) {
                        break;
                } else {
                        retry_count--;
                }
        }while(retry_count != 0);
}
/*
************************************************************************
************************************************************************
*/
static void arcmsr_flush_hbe_cache(struct AdapterControlBlock *acb)
{
        int retry_count = 30;/* enlarge wait flush adapter cache time: 10 minute */

        CHIP_REG_WRITE32(HBE_MessageUnit, 0, inbound_msgaddr0, ARCMSR_INBOUND_MESG0_FLUSH_CACHE);
        acb->out_doorbell ^= ARCMSR_HBEMU_DRV2IOP_MESSAGE_CMD_DONE;
        CHIP_REG_WRITE32(HBE_MessageUnit, 0, iobound_doorbell, acb->out_doorbell);
        do {
                if(arcmsr_hbe_wait_msgint_ready(acb)) {
                        break;
                } else {
                        retry_count--;
                }
        }while(retry_count != 0);
}
/*
************************************************************************
************************************************************************
*/
static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb)
{
        switch (acb->adapter_type) {
        case ACB_ADAPTER_TYPE_A: {
                        arcmsr_flush_hba_cache(acb);
                }
                break;
        case ACB_ADAPTER_TYPE_B: {
                        arcmsr_flush_hbb_cache(acb);
                }
                break;
        case ACB_ADAPTER_TYPE_C: {
                        arcmsr_flush_hbc_cache(acb);
                }
                break;
        case ACB_ADAPTER_TYPE_D: {
                        arcmsr_flush_hbd_cache(acb);
                }
                break;
        case ACB_ADAPTER_TYPE_E: {
                        arcmsr_flush_hbe_cache(acb);
                }
                break;
        }
}
/*
*******************************************************************************
*******************************************************************************
*/
static int arcmsr_suspend(device_t dev)
{
        struct AdapterControlBlock      *acb = device_get_softc(dev);

        /* flush controller */
        arcmsr_iop_parking(acb);
        /* disable all outbound interrupt */
        arcmsr_disable_allintr(acb);
        return(0);
}
/*
*******************************************************************************
*******************************************************************************
*/
static int arcmsr_resume(device_t dev)
{
        struct AdapterControlBlock      *acb = device_get_softc(dev);

        arcmsr_iop_init(acb);
        return(0);
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_report_sense_info(struct CommandControlBlock *srb)
{
        union ccb *pccb = srb->pccb;

        pccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR;
        pccb->csio.scsi_status = SCSI_STATUS_CHECK_COND;
        if(pccb->csio.sense_len) {
                memset(&pccb->csio.sense_data, 0, sizeof(pccb->csio.sense_data));
                memcpy(&pccb->csio.sense_data, srb->arcmsr_cdb.SenseData,
                get_min(sizeof(struct SENSE_DATA), sizeof(pccb->csio.sense_data)));
                ((u_int8_t *)&pccb->csio.sense_data)[0] = (0x1 << 7 | 0x70); /* Valid,ErrorCode */
                pccb->ccb_h.status |= CAM_AUTOSNS_VALID;
        }
}
/*
*********************************************************************
*********************************************************************
*/
static void arcmsr_abort_hba_allcmd(struct AdapterControlBlock *acb)
{
        CHIP_REG_WRITE32(HBA_MessageUnit, 0, inbound_msgaddr0, ARCMSR_INBOUND_MESG0_ABORT_CMD);
        if(!arcmsr_hba_wait_msgint_ready(acb)) {
                kprintf("arcmsr%d: wait 'abort all outstanding command' timeout \n", acb->pci_unit);
        }
}
/*
*********************************************************************
*********************************************************************
*/
static void arcmsr_abort_hbb_allcmd(struct AdapterControlBlock *acb)
{
        struct HBB_MessageUnit *phbbmu = (struct HBB_MessageUnit *)acb->pmu;
        WRITE_CHIP_REG32(0, phbbmu->drv2iop_doorbell, ARCMSR_MESSAGE_ABORT_CMD);
        if(!arcmsr_hbb_wait_msgint_ready(acb)) {
                kprintf("arcmsr%d: wait 'abort all outstanding command' timeout \n", acb->pci_unit);
        }
}
/*
*********************************************************************
*********************************************************************
*/
static void arcmsr_abort_hbc_allcmd(struct AdapterControlBlock *acb)
{
        CHIP_REG_WRITE32(HBC_MessageUnit, 0, inbound_msgaddr0, ARCMSR_INBOUND_MESG0_ABORT_CMD);
        CHIP_REG_WRITE32(HBC_MessageUnit, 0, inbound_doorbell, ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE);
        if(!arcmsr_hbc_wait_msgint_ready(acb)) {
                kprintf("arcmsr%d: wait 'abort all outstanding command' timeout \n", acb->pci_unit);
        }
}
/*
*********************************************************************
*********************************************************************
*/
static void arcmsr_abort_hbd_allcmd(struct AdapterControlBlock *acb)
{
        CHIP_REG_WRITE32(HBD_MessageUnit, 0, inbound_msgaddr0, ARCMSR_INBOUND_MESG0_ABORT_CMD);
        if(!arcmsr_hbd_wait_msgint_ready(acb)) {
                kprintf("arcmsr%d: wait 'abort all outstanding command' timeout \n", acb->pci_unit);
        }
}
/*
*********************************************************************
*********************************************************************
*/
static void arcmsr_abort_hbe_allcmd(struct AdapterControlBlock *acb)
{
        CHIP_REG_WRITE32(HBE_MessageUnit, 0, inbound_msgaddr0, ARCMSR_INBOUND_MESG0_ABORT_CMD);
        acb->out_doorbell ^= ARCMSR_HBEMU_DRV2IOP_MESSAGE_CMD_DONE;
        CHIP_REG_WRITE32(HBE_MessageUnit, 0, iobound_doorbell, acb->out_doorbell);
        if(!arcmsr_hbe_wait_msgint_ready(acb)) {
                kprintf("arcmsr%d: wait 'abort all outstanding command' timeout \n", acb->pci_unit);
        }
}
/*
*********************************************************************
*********************************************************************
*/
static void arcmsr_abort_allcmd(struct AdapterControlBlock *acb)
{
        switch (acb->adapter_type) {
        case ACB_ADAPTER_TYPE_A: {
                        arcmsr_abort_hba_allcmd(acb);
                }
                break;
        case ACB_ADAPTER_TYPE_B: {
                        arcmsr_abort_hbb_allcmd(acb);
                }
                break;
        case ACB_ADAPTER_TYPE_C: {
                        arcmsr_abort_hbc_allcmd(acb);
                }
                break;
        case ACB_ADAPTER_TYPE_D: {
                        arcmsr_abort_hbd_allcmd(acb);
                }
                break;
        case ACB_ADAPTER_TYPE_E: {
                        arcmsr_abort_hbe_allcmd(acb);
                }
                break;
        }
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_srb_complete(struct CommandControlBlock *srb, int stand_flag)
{
        struct AdapterControlBlock *acb = srb->acb;
        union ccb *pccb = srb->pccb;

        if(srb->srb_flags & SRB_FLAG_TIMER_START)
                callout_stop(&srb->ccb_callout);
        if((pccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
                bus_dmasync_op_t op;

                if((pccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
                        op = BUS_DMASYNC_POSTREAD;
                } else {
                        op = BUS_DMASYNC_POSTWRITE;
                }
                bus_dmamap_sync(acb->dm_segs_dmat, srb->dm_segs_dmamap, op);
                ARCMSR_LOCK_ACQUIRE(&acb->io_lock);
                bus_dmamap_unload(acb->dm_segs_dmat, srb->dm_segs_dmamap);
                ARCMSR_LOCK_RELEASE(&acb->io_lock);
        }
        if(stand_flag == 1) {
                atomic_subtract_int(&acb->srboutstandingcount, 1);
                if((acb->acb_flags & ACB_F_CAM_DEV_QFRZN) && (
                acb->srboutstandingcount < (acb->maxOutstanding -10))) {
                        acb->acb_flags &= ~ACB_F_CAM_DEV_QFRZN;
                        pccb->ccb_h.status |= CAM_RELEASE_SIMQ;
                }
        }
        if(srb->srb_state != ARCMSR_SRB_TIMEOUT)
                arcmsr_free_srb(srb);
        acb->pktReturnCount++;
        ARCMSR_LOCK_ACQUIRE(&acb->sim_lock);
        xpt_done(pccb);
        ARCMSR_LOCK_RELEASE(&acb->sim_lock);
}
/*
**************************************************************************
**************************************************************************
*/
static void arcmsr_report_srb_state(struct AdapterControlBlock *acb, struct CommandControlBlock *srb, u_int16_t error)
{
        int target, lun;

        target = srb->pccb->ccb_h.target_id;
        lun = srb->pccb->ccb_h.target_lun;
        if(error == FALSE) {
                if(acb->devstate[target][lun] == ARECA_RAID_GONE) {
                        acb->devstate[target][lun] = ARECA_RAID_GOOD;
                }
                srb->pccb->ccb_h.status |= CAM_REQ_CMP;
                arcmsr_srb_complete(srb, 1);
        } else {
                switch(srb->arcmsr_cdb.DeviceStatus) {
                case ARCMSR_DEV_SELECT_TIMEOUT: {
                                if(acb->devstate[target][lun] == ARECA_RAID_GOOD) {
                                        kprintf( "arcmsr%d: Target=%x, Lun=%x, selection timeout, raid volume was lost\n", acb->pci_unit, target, lun);
                                }
                                acb->devstate[target][lun] = ARECA_RAID_GONE;
                                srb->pccb->ccb_h.status |= CAM_DEV_NOT_THERE;
                                arcmsr_srb_complete(srb, 1);
                        }
                        break;
                case ARCMSR_DEV_ABORTED:
                case ARCMSR_DEV_INIT_FAIL: {
                                acb->devstate[target][lun] = ARECA_RAID_GONE;
                                srb->pccb->ccb_h.status |= CAM_DEV_NOT_THERE;
                                arcmsr_srb_complete(srb, 1);
                        }
                        break;
                case SCSISTAT_CHECK_CONDITION: {
                                acb->devstate[target][lun] = ARECA_RAID_GOOD;
                                arcmsr_report_sense_info(srb);
                                arcmsr_srb_complete(srb, 1);
                        }
                        break;
                default:
                        kprintf("arcmsr%d: scsi id=%d lun=%d isr got command error done,but got unknown DeviceStatus=0x%x \n"
                                        , acb->pci_unit, target, lun ,srb->arcmsr_cdb.DeviceStatus);
                        acb->devstate[target][lun] = ARECA_RAID_GONE;
                        srb->pccb->ccb_h.status |= CAM_UNCOR_PARITY;
                        /*unknown error or crc error just for retry*/
                        arcmsr_srb_complete(srb, 1);
                        break;
                }
        }
}
/*
**************************************************************************
**************************************************************************
*/
static void arcmsr_drain_donequeue(struct AdapterControlBlock *acb, u_int32_t flag_srb, u_int16_t error)
{
        struct CommandControlBlock *srb;

        /* check if command done with no error*/
        switch (acb->adapter_type) {
        case ACB_ADAPTER_TYPE_C:
        case ACB_ADAPTER_TYPE_D:
                srb = (struct CommandControlBlock *)(acb->vir2phy_offset+(flag_srb & 0xFFFFFFE0)); /*frame must be 32 bytes aligned*/
                break;
        case ACB_ADAPTER_TYPE_E:
                srb = acb->psrb_pool[flag_srb];
                break;
        case ACB_ADAPTER_TYPE_A:
        case ACB_ADAPTER_TYPE_B:
        default:
                srb = (struct CommandControlBlock *)(acb->vir2phy_offset+(flag_srb << 5));/*frame must be 32 bytes aligned*/
                break;
        }
        if((srb->acb != acb) || (srb->srb_state != ARCMSR_SRB_START)) {
                if(srb->srb_state == ARCMSR_SRB_TIMEOUT) {
                        arcmsr_free_srb(srb);
                        kprintf("arcmsr%d: srb='%p' return srb has been timeouted\n", acb->pci_unit, srb);
                        return;
                }
                kprintf("arcmsr%d: return srb has been completed\n"
                        "srb='%p' srb_state=0x%x outstanding srb count=%d \n",
                        acb->pci_unit, srb, srb->srb_state, acb->srboutstandingcount);
                return;
        }
        arcmsr_report_srb_state(acb, srb, error);
}
/*
**************************************************************************
**************************************************************************
*/
static void     arcmsr_srb_timeout(void *arg)
{
        struct CommandControlBlock *srb = (struct CommandControlBlock *)arg;
        struct AdapterControlBlock *acb;
        int target, lun;
        u_int8_t cmd;

        target = srb->pccb->ccb_h.target_id;
        lun = srb->pccb->ccb_h.target_lun;
        acb = srb->acb;
        if(srb->srb_state == ARCMSR_SRB_START)
        {
                cmd = srb->pccb->csio.cdb_io.cdb_bytes[0];
                srb->srb_state = ARCMSR_SRB_TIMEOUT;
                srb->pccb->ccb_h.status |= CAM_CMD_TIMEOUT;
                arcmsr_srb_complete(srb, 1);
                kprintf("arcmsr%d: scsi id %d lun %d cmd=0x%x srb='%p' ccb command time out!\n",
                                 acb->pci_unit, target, lun, cmd, srb);
        }
#ifdef ARCMSR_DEBUG1
        arcmsr_dump_data(acb);
#endif
}

/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_done4abort_postqueue(struct AdapterControlBlock *acb)
{
        int i=0;
        u_int32_t flag_srb;
        u_int16_t error;

        switch (acb->adapter_type) {
        case ACB_ADAPTER_TYPE_A: {
                        u_int32_t outbound_intstatus;

                        /*clear and abort all outbound posted Q*/
                        outbound_intstatus = CHIP_REG_READ32(HBA_MessageUnit, 0, outbound_intstatus) & acb->outbound_int_enable;
                        CHIP_REG_WRITE32(HBA_MessageUnit, 0, outbound_intstatus, outbound_intstatus);/*clear interrupt*/
                        while(((flag_srb=CHIP_REG_READ32(HBA_MessageUnit, 0, outbound_queueport)) != 0xFFFFFFFF) && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) {
                                error = (flag_srb & ARCMSR_SRBREPLY_FLAG_ERROR_MODE0)?TRUE:FALSE;
                                arcmsr_drain_donequeue(acb, flag_srb, error);
                        }
                }
                break;
        case ACB_ADAPTER_TYPE_B: {
                        struct HBB_MessageUnit *phbbmu=(struct HBB_MessageUnit *)acb->pmu;

                        /*clear all outbound posted Q*/
                        WRITE_CHIP_REG32(0, phbbmu->iop2drv_doorbell, ARCMSR_DOORBELL_INT_CLEAR_PATTERN); /* clear doorbell interrupt */
                        for(i=0; i < ARCMSR_MAX_HBB_POSTQUEUE; i++) {
                                if((flag_srb = phbbmu->done_qbuffer[i]) != 0) {
                                        phbbmu->done_qbuffer[i] = 0;
                                        error = (flag_srb & ARCMSR_SRBREPLY_FLAG_ERROR_MODE0)?TRUE:FALSE;
                                        arcmsr_drain_donequeue(acb, flag_srb, error);
                                }
                                phbbmu->post_qbuffer[i] = 0;
                        }/*drain reply FIFO*/
                        phbbmu->doneq_index = 0;
                        phbbmu->postq_index = 0;
                }
                break;
        case ACB_ADAPTER_TYPE_C: {

                        while((CHIP_REG_READ32(HBC_MessageUnit, 0, host_int_status) & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) {
                                flag_srb = CHIP_REG_READ32(HBC_MessageUnit, 0, outbound_queueport_low);
                                error = (flag_srb & ARCMSR_SRBREPLY_FLAG_ERROR_MODE1) ? TRUE : FALSE;
                                arcmsr_drain_donequeue(acb, flag_srb, error);
                        }
                }
                break;
        case ACB_ADAPTER_TYPE_D: {
                        arcmsr_hbd_postqueue_isr(acb);
                }
                break;
        case ACB_ADAPTER_TYPE_E: {
                        arcmsr_hbe_postqueue_isr(acb);
                }
                break;
        }
}
/*
****************************************************************************
****************************************************************************
*/
static void arcmsr_iop_reset(struct AdapterControlBlock *acb)
{
        struct CommandControlBlock *srb;
        u_int32_t intmask_org;
        u_int32_t i=0;

        if(acb->srboutstandingcount>0) {
                /* disable all outbound interrupt */
                intmask_org = arcmsr_disable_allintr(acb);
                /*clear and abort all outbound posted Q*/
                arcmsr_done4abort_postqueue(acb);
                /* talk to iop 331 outstanding command aborted*/
                arcmsr_abort_allcmd(acb);
                for(i=0; i < ARCMSR_MAX_FREESRB_NUM; i++) {
                        srb = acb->psrb_pool[i];
                        if(srb->srb_state == ARCMSR_SRB_START) {
                                srb->srb_state = ARCMSR_SRB_ABORTED;
                                srb->pccb->ccb_h.status |= CAM_REQ_ABORTED;
                                arcmsr_srb_complete(srb, 1);
                                kprintf("arcmsr%d: scsi id=%d lun=%jx srb='%p' aborted\n"
                                                , acb->pci_unit, srb->pccb->ccb_h.target_id
                                                , (uintmax_t)srb->pccb->ccb_h.target_lun, srb);
                        }
                }
                /* enable all outbound interrupt */
                arcmsr_enable_allintr(acb, intmask_org);
        }
        acb->srboutstandingcount = 0;
        acb->workingsrb_doneindex = 0;
        acb->workingsrb_startindex = 0;
        acb->pktRequestCount = 0;
        acb->pktReturnCount = 0;
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_build_srb(struct CommandControlBlock *srb,
                bus_dma_segment_t *dm_segs, u_int32_t nseg)
{
        struct ARCMSR_CDB *arcmsr_cdb = &srb->arcmsr_cdb;
        u_int8_t *psge = (u_int8_t *)&arcmsr_cdb->u;
        u_int32_t address_lo, address_hi;
        union ccb *pccb = srb->pccb;
        struct ccb_scsiio *pcsio = &pccb->csio;
        u_int32_t arccdbsize = 0x30;

        memset(arcmsr_cdb, 0, sizeof(struct ARCMSR_CDB));
        arcmsr_cdb->Bus = 0;
        arcmsr_cdb->TargetID = pccb->ccb_h.target_id;
        arcmsr_cdb->LUN = pccb->ccb_h.target_lun;
        arcmsr_cdb->Function = 1;
        arcmsr_cdb->CdbLength = (u_int8_t)pcsio->cdb_len;
        bcopy(pcsio->cdb_io.cdb_bytes, arcmsr_cdb->Cdb, pcsio->cdb_len);
        if(nseg != 0) {
                struct AdapterControlBlock *acb = srb->acb;
                bus_dmasync_op_t op;
                u_int32_t length, i, cdb_sgcount = 0;

                if((pccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
                        op = BUS_DMASYNC_PREREAD;
                } else {
                        op = BUS_DMASYNC_PREWRITE;
                        arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE;
                        srb->srb_flags |= SRB_FLAG_WRITE;
                }
                bus_dmamap_sync(acb->dm_segs_dmat, srb->dm_segs_dmamap, op);
                for(i=0; i < nseg; i++) {
                        /* Get the physical address of the current data pointer */
                        length = arcmsr_htole32(dm_segs[i].ds_len);
                        address_lo = arcmsr_htole32(dma_addr_lo32(dm_segs[i].ds_addr));
                        address_hi = arcmsr_htole32(dma_addr_hi32(dm_segs[i].ds_addr));
                        if(address_hi == 0) {
                                struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge;
                                pdma_sg->address = address_lo;
                                pdma_sg->length = length;
                                psge += sizeof(struct SG32ENTRY);
                                arccdbsize += sizeof(struct SG32ENTRY);
                        } else {
                                u_int32_t sg64s_size = 0, tmplength = length;

                                while(1) {
                                        u_int64_t span4G, length0;
                                        struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge;

                                        span4G = (u_int64_t)address_lo + tmplength;
                                        pdma_sg->addresshigh = address_hi;
                                        pdma_sg->address = address_lo;
                                        if(span4G > 0x100000000) {
                                                /*see if cross 4G boundary*/
                                                length0 = 0x100000000-address_lo;
                                                pdma_sg->length = (u_int32_t)length0 | IS_SG64_ADDR;
                                                address_hi = address_hi+1;
                                                address_lo = 0;
                                                tmplength = tmplength - (u_int32_t)length0;
                                                sg64s_size += sizeof(struct SG64ENTRY);
                                                psge += sizeof(struct SG64ENTRY);
                                                cdb_sgcount++;
                                        } else {
                                                pdma_sg->length = tmplength | IS_SG64_ADDR;
                                                sg64s_size += sizeof(struct SG64ENTRY);
                                                psge += sizeof(struct SG64ENTRY);
                                                break;
                                        }
                                }
                                arccdbsize += sg64s_size;
                        }
                        cdb_sgcount++;
                }
                arcmsr_cdb->sgcount = (u_int8_t)cdb_sgcount;
                arcmsr_cdb->DataLength = pcsio->dxfer_len;
                if( arccdbsize > 256) {
                        arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE;
                }
        } else {
                arcmsr_cdb->DataLength = 0;
        }
        srb->arc_cdb_size = arccdbsize;
        arcmsr_cdb->msgPages = (arccdbsize/256) + ((arccdbsize % 256) ? 1 : 0);
}
/*
**************************************************************************
**************************************************************************
*/
static void arcmsr_post_srb(struct AdapterControlBlock *acb, struct CommandControlBlock *srb)
{
        u_int32_t cdb_phyaddr_low = (u_int32_t) srb->cdb_phyaddr_low;
        struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&srb->arcmsr_cdb;

        bus_dmamap_sync(acb->srb_dmat, acb->srb_dmamap, (srb->srb_flags & SRB_FLAG_WRITE) ? BUS_DMASYNC_POSTWRITE:BUS_DMASYNC_POSTREAD);
        atomic_add_int(&acb->srboutstandingcount, 1);
        srb->srb_state = ARCMSR_SRB_START;

        switch (acb->adapter_type) {
        case ACB_ADAPTER_TYPE_A: {
                        if(arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) {
                                CHIP_REG_WRITE32(HBA_MessageUnit, 0, inbound_queueport, cdb_phyaddr_low|ARCMSR_SRBPOST_FLAG_SGL_BSIZE);
                        } else {
                                CHIP_REG_WRITE32(HBA_MessageUnit, 0, inbound_queueport, cdb_phyaddr_low);
                        }
                }
                break;
        case ACB_ADAPTER_TYPE_B: {
                        struct HBB_MessageUnit *phbbmu = (struct HBB_MessageUnit *)acb->pmu;
                        int ending_index, index;

                        index = phbbmu->postq_index;
                        ending_index = ((index+1) % ARCMSR_MAX_HBB_POSTQUEUE);
                        phbbmu->post_qbuffer[ending_index] = 0;
                        if(arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) {
                                phbbmu->post_qbuffer[index] = cdb_phyaddr_low | ARCMSR_SRBPOST_FLAG_SGL_BSIZE;
                        } else {
                                phbbmu->post_qbuffer[index] = cdb_phyaddr_low;
                        }
                        index++;
                        index %= ARCMSR_MAX_HBB_POSTQUEUE;     /*if last index number set it to 0 */
                        phbbmu->postq_index = index;
                        WRITE_CHIP_REG32(0, phbbmu->drv2iop_doorbell, ARCMSR_DRV2IOP_CDB_POSTED);
                }
                break;
        case ACB_ADAPTER_TYPE_C: {
                        u_int32_t ccb_post_stamp, arc_cdb_size, cdb_phyaddr_hi32;

                        arc_cdb_size = (srb->arc_cdb_size > 0x300) ? 0x300 : srb->arc_cdb_size;
                        ccb_post_stamp = (cdb_phyaddr_low | ((arc_cdb_size-1) >> 6) | 1);
                        cdb_phyaddr_hi32 = acb->srb_phyaddr.B.phyadd_high;
                        if(cdb_phyaddr_hi32)
                        {
                                CHIP_REG_WRITE32(HBC_MessageUnit,0,inbound_queueport_high, cdb_phyaddr_hi32);
                                CHIP_REG_WRITE32(HBC_MessageUnit,0,inbound_queueport_low, ccb_post_stamp);
                        }
                        else
                        {
                                CHIP_REG_WRITE32(HBC_MessageUnit,0,inbound_queueport_low, ccb_post_stamp);
                        }
                }
                break;
        case ACB_ADAPTER_TYPE_D: {
                        struct HBD_MessageUnit0 *phbdmu = (struct HBD_MessageUnit0 *)acb->pmu;
                        u_int16_t index_stripped;
                        u_int16_t postq_index;
                        struct InBound_SRB *pinbound_srb;

                        ARCMSR_LOCK_ACQUIRE(&acb->postDone_lock);
                        postq_index = phbdmu->postq_index;
                        pinbound_srb = (struct InBound_SRB *)&phbdmu->post_qbuffer[postq_index & 0xFF];
                        pinbound_srb->addressHigh = srb->cdb_phyaddr_high;
                        pinbound_srb->addressLow = srb->cdb_phyaddr_low;
                        pinbound_srb->length = srb->arc_cdb_size >> 2;
                        arcmsr_cdb->Context = srb->cdb_phyaddr_low;
                        if (postq_index & 0x4000) {
                                index_stripped = postq_index & 0xFF;
                                index_stripped += 1;
                                index_stripped %= ARCMSR_MAX_HBD_POSTQUEUE;
                                phbdmu->postq_index = index_stripped ? (index_stripped | 0x4000) : index_stripped;
                        } else {
                                index_stripped = postq_index;
                                index_stripped += 1;
                                index_stripped %= ARCMSR_MAX_HBD_POSTQUEUE;
                                phbdmu->postq_index = index_stripped ? index_stripped : (index_stripped | 0x4000);
                        }
                        CHIP_REG_WRITE32(HBD_MessageUnit, 0, inboundlist_write_pointer, postq_index);
                        ARCMSR_LOCK_RELEASE(&acb->postDone_lock);
                }
                break;
        case ACB_ADAPTER_TYPE_E: {
                        u_int32_t ccb_post_stamp, arc_cdb_size;

                        arc_cdb_size = (srb->arc_cdb_size > 0x300) ? 0x300 : srb->arc_cdb_size;
                        ccb_post_stamp = (srb->smid | ((arc_cdb_size-1) >> 6));
                        CHIP_REG_WRITE32(HBE_MessageUnit, 0, inbound_queueport_high, 0);
                        CHIP_REG_WRITE32(HBE_MessageUnit, 0, inbound_queueport_low, ccb_post_stamp);
                }
                break;
        }
}
/*
************************************************************************
************************************************************************
*/
static struct QBUFFER *arcmsr_get_iop_rqbuffer( struct AdapterControlBlock *acb)
{
        struct QBUFFER *qbuffer=NULL;

        switch (acb->adapter_type) {
        case ACB_ADAPTER_TYPE_A: {
                        struct HBA_MessageUnit *phbamu = (struct HBA_MessageUnit *)acb->pmu;

                        qbuffer = (struct QBUFFER *)&phbamu->message_rbuffer;
                }
                break;
        case ACB_ADAPTER_TYPE_B: {
                        struct HBB_MessageUnit *phbbmu = (struct HBB_MessageUnit *)acb->pmu;

                        qbuffer = (struct QBUFFER *)&phbbmu->hbb_rwbuffer->message_rbuffer;
                }
                break;
        case ACB_ADAPTER_TYPE_C: {
                        struct HBC_MessageUnit *phbcmu = (struct HBC_MessageUnit *)acb->pmu;

                        qbuffer = (struct QBUFFER *)&phbcmu->message_rbuffer;
                }
                break;
        case ACB_ADAPTER_TYPE_D: {
                        struct HBD_MessageUnit0 *phbdmu = (struct HBD_MessageUnit0 *)acb->pmu;

                        qbuffer = (struct QBUFFER *)&phbdmu->phbdmu->message_rbuffer;
                }
                break;
        case ACB_ADAPTER_TYPE_E: {
                        struct HBE_MessageUnit *phbcmu = (struct HBE_MessageUnit *)acb->pmu;

                        qbuffer = (struct QBUFFER *)&phbcmu->message_rbuffer;
                }
                break;
        }
        return(qbuffer);
}
/*
************************************************************************
************************************************************************
*/
static struct QBUFFER *arcmsr_get_iop_wqbuffer( struct AdapterControlBlock *acb)
{
        struct QBUFFER *qbuffer = NULL;

        switch (acb->adapter_type) {
        case ACB_ADAPTER_TYPE_A: {
                        struct HBA_MessageUnit *phbamu = (struct HBA_MessageUnit *)acb->pmu;

                        qbuffer = (struct QBUFFER *)&phbamu->message_wbuffer;
                }
                break;
        case ACB_ADAPTER_TYPE_B: {
                        struct HBB_MessageUnit *phbbmu = (struct HBB_MessageUnit *)acb->pmu;

                        qbuffer = (struct QBUFFER *)&phbbmu->hbb_rwbuffer->message_wbuffer;
                }
                break;
        case ACB_ADAPTER_TYPE_C: {
                        struct HBC_MessageUnit *phbcmu = (struct HBC_MessageUnit *)acb->pmu;

                        qbuffer = (struct QBUFFER *)&phbcmu->message_wbuffer;
                }
                break;
        case ACB_ADAPTER_TYPE_D: {
                        struct HBD_MessageUnit0 *phbdmu = (struct HBD_MessageUnit0 *)acb->pmu;

                        qbuffer = (struct QBUFFER *)&phbdmu->phbdmu->message_wbuffer;
                }
                break;
        case ACB_ADAPTER_TYPE_E: {
                        struct HBE_MessageUnit *phbcmu = (struct HBE_MessageUnit *)acb->pmu;

                        qbuffer = (struct QBUFFER *)&phbcmu->message_wbuffer;
                }
                break;
        }
        return(qbuffer);
}
/*
**************************************************************************
**************************************************************************
*/
static void arcmsr_iop_message_read(struct AdapterControlBlock *acb)
{
        switch (acb->adapter_type) {
        case ACB_ADAPTER_TYPE_A: {
                        /* let IOP know data has been read */
                        CHIP_REG_WRITE32(HBA_MessageUnit, 0, inbound_doorbell, ARCMSR_INBOUND_DRIVER_DATA_READ_OK);
                }
                break;
        case ACB_ADAPTER_TYPE_B: {
                        struct HBB_MessageUnit *phbbmu = (struct HBB_MessageUnit *)acb->pmu;
                        /* let IOP know data has been read */
                        WRITE_CHIP_REG32(0, phbbmu->drv2iop_doorbell, ARCMSR_DRV2IOP_DATA_READ_OK);
                }
                break;
        case ACB_ADAPTER_TYPE_C: {
                        /* let IOP know data has been read */
                        CHIP_REG_WRITE32(HBC_MessageUnit, 0, inbound_doorbell, ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK);
                }
                break;
        case ACB_ADAPTER_TYPE_D: {
                        /* let IOP know data has been read */
                        CHIP_REG_WRITE32(HBD_MessageUnit, 0, inbound_doorbell, ARCMSR_HBDMU_DRV2IOP_DATA_OUT_READ);
                }
                break;
        case ACB_ADAPTER_TYPE_E: {
                        /* let IOP know data has been read */
                        acb->out_doorbell ^= ARCMSR_HBEMU_DRV2IOP_DATA_READ_OK;
                        CHIP_REG_WRITE32(HBE_MessageUnit, 0, iobound_doorbell, acb->out_doorbell);
                }
                break;
        }
}
/*
**************************************************************************
**************************************************************************
*/
static void arcmsr_iop_message_wrote(struct AdapterControlBlock *acb)
{
        switch (acb->adapter_type) {
        case ACB_ADAPTER_TYPE_A: {
                        /*
                        ** push inbound doorbell tell iop, driver data write ok
                        ** and wait reply on next hwinterrupt for next Qbuffer post
                        */
                        CHIP_REG_WRITE32(HBA_MessageUnit, 0, inbound_doorbell, ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK);
                }
                break;
        case ACB_ADAPTER_TYPE_B: {
                        struct HBB_MessageUnit *phbbmu = (struct HBB_MessageUnit *)acb->pmu;
                        /*
                        ** push inbound doorbell tell iop, driver data write ok
                        ** and wait reply on next hwinterrupt for next Qbuffer post
                        */
                        WRITE_CHIP_REG32(0, phbbmu->drv2iop_doorbell, ARCMSR_DRV2IOP_DATA_WRITE_OK);
                }
                break;
        case ACB_ADAPTER_TYPE_C: {
                        /*
                        ** push inbound doorbell tell iop, driver data write ok
                        ** and wait reply on next hwinterrupt for next Qbuffer post
                        */
                        CHIP_REG_WRITE32(HBC_MessageUnit, 0, inbound_doorbell, ARCMSR_HBCMU_DRV2IOP_DATA_WRITE_OK);
                }
                break;
        case ACB_ADAPTER_TYPE_D: {
                        /*
                        ** push inbound doorbell tell iop, driver data write ok
                        ** and wait reply on next hwinterrupt for next Qbuffer post
                        */
                        CHIP_REG_WRITE32(HBD_MessageUnit, 0, inbound_doorbell, ARCMSR_HBDMU_DRV2IOP_DATA_IN_READY);
                }
                break;
        case ACB_ADAPTER_TYPE_E: {
                        /*
                        ** push inbound doorbell tell iop, driver data write ok
                        ** and wait reply on next hwinterrupt for next Qbuffer post
                        */
                        acb->out_doorbell ^= ARCMSR_HBEMU_DRV2IOP_DATA_WRITE_OK;
                        CHIP_REG_WRITE32(HBE_MessageUnit, 0, iobound_doorbell, acb->out_doorbell);
                }
                break;
        }
}
/*
************************************************************************
************************************************************************
*/
static void arcmsr_stop_hba_bgrb(struct AdapterControlBlock *acb)
{
        acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
        CHIP_REG_WRITE32(HBA_MessageUnit,
                0, inbound_msgaddr0, ARCMSR_INBOUND_MESG0_STOP_BGRB);
        if(!arcmsr_hba_wait_msgint_ready(acb)) {
                kprintf("arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
                        , acb->pci_unit);
        }
}
/*
************************************************************************
************************************************************************
*/
static void arcmsr_stop_hbb_bgrb(struct AdapterControlBlock *acb)
{
        struct HBB_MessageUnit *phbbmu = (struct HBB_MessageUnit *)acb->pmu;
        acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
        WRITE_CHIP_REG32(0, phbbmu->drv2iop_doorbell, ARCMSR_MESSAGE_STOP_BGRB);
        if(!arcmsr_hbb_wait_msgint_ready(acb)) {
                kprintf("arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
                        , acb->pci_unit);
        }
}
/*
************************************************************************
************************************************************************
*/
static void arcmsr_stop_hbc_bgrb(struct AdapterControlBlock *acb)
{
        acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
        CHIP_REG_WRITE32(HBC_MessageUnit, 0, inbound_msgaddr0, ARCMSR_INBOUND_MESG0_STOP_BGRB);
        CHIP_REG_WRITE32(HBC_MessageUnit, 0, inbound_doorbell,ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE);
        if(!arcmsr_hbc_wait_msgint_ready(acb)) {
                kprintf("arcmsr%d: wait 'stop adapter background rebulid' timeout \n", acb->pci_unit);
        }
}
/*
************************************************************************
************************************************************************
*/
static void arcmsr_stop_hbd_bgrb(struct AdapterControlBlock *acb)
{
        acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
        CHIP_REG_WRITE32(HBD_MessageUnit, 0, inbound_msgaddr0, ARCMSR_INBOUND_MESG0_STOP_BGRB);
        if(!arcmsr_hbd_wait_msgint_ready(acb)) {
                kprintf("arcmsr%d: wait 'stop adapter background rebulid' timeout \n", acb->pci_unit);
        }
}
/*
************************************************************************
************************************************************************
*/
static void arcmsr_stop_hbe_bgrb(struct AdapterControlBlock *acb)
{
        acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
        CHIP_REG_WRITE32(HBE_MessageUnit, 0, inbound_msgaddr0, ARCMSR_INBOUND_MESG0_STOP_BGRB);
        acb->out_doorbell ^= ARCMSR_HBEMU_DRV2IOP_MESSAGE_CMD_DONE;
        CHIP_REG_WRITE32(HBE_MessageUnit, 0, iobound_doorbell, acb->out_doorbell);
        if(!arcmsr_hbe_wait_msgint_ready(acb)) {
                kprintf("arcmsr%d: wait 'stop adapter background rebulid' timeout \n", acb->pci_unit);
        }
}
/*
************************************************************************
************************************************************************
*/
static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb)
{
        switch (acb->adapter_type) {
        case ACB_ADAPTER_TYPE_A: {
                        arcmsr_stop_hba_bgrb(acb);
                }
                break;
        case ACB_ADAPTER_TYPE_B: {
                        arcmsr_stop_hbb_bgrb(acb);
                }
                break;
        case ACB_ADAPTER_TYPE_C: {
                        arcmsr_stop_hbc_bgrb(acb);
                }
                break;
        case ACB_ADAPTER_TYPE_D: {
                        arcmsr_stop_hbd_bgrb(acb);
                }
                break;
        case ACB_ADAPTER_TYPE_E: {
                        arcmsr_stop_hbe_bgrb(acb);
                }
                break;
        }
}
/*
************************************************************************
************************************************************************
*/
static void arcmsr_poll(struct cam_sim *psim)
{
        struct AdapterControlBlock *acb;
        int     mutex;

        acb = (struct AdapterControlBlock *)cam_sim_softc(psim);
        mutex = lockstatus(&acb->isr_lock, curthread);
        if( mutex == 0 )
                ARCMSR_LOCK_ACQUIRE(&acb->isr_lock);
        arcmsr_interrupt(acb);
        if( mutex == 0 )
                ARCMSR_LOCK_RELEASE(&acb->isr_lock);
}
/*
**************************************************************************
**************************************************************************
*/
static u_int32_t arcmsr_Read_iop_rqbuffer_data_D(struct AdapterControlBlock *acb,
        struct QBUFFER *prbuffer) {

        u_int8_t *pQbuffer;
        u_int8_t *buf1 = NULL;
        u_int32_t *iop_data, *buf2 = NULL;
        u_int32_t iop_len, data_len;

        iop_data = (u_int32_t *)prbuffer->data;
        iop_len = (u_int32_t)prbuffer->data_len;
        if ( iop_len > 0 )
        {
                buf1 = kmalloc(128, M_DEVBUF, M_NOWAIT | M_ZERO);
                buf2 = (u_int32_t *)buf1;
                if( buf1 == NULL)
                        return (0);
                data_len = iop_len;
                while(data_len >= 4)
                {
                        *buf2++ = *iop_data++;
                        data_len -= 4;
                }
                if(data_len)
                        *buf2 = *iop_data;
                buf2 = (u_int32_t *)buf1;
        }
        while (iop_len > 0) {
                pQbuffer = &acb->rqbuffer[acb->rqbuf_lastindex];
                *pQbuffer = *buf1;
                acb->rqbuf_lastindex++;
                /* if last, index number set it to 0 */
                acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
                buf1++;
                iop_len--;
        }
        if(buf2)
                kfree( (u_int8_t *)buf2, M_DEVBUF);
        /* let IOP know data has been read */
        arcmsr_iop_message_read(acb);
        return (1);
}
/*
**************************************************************************
**************************************************************************
*/
static u_int32_t arcmsr_Read_iop_rqbuffer_data(struct AdapterControlBlock *acb,
        struct QBUFFER *prbuffer) {

        u_int8_t *pQbuffer;
        u_int8_t *iop_data;
        u_int32_t iop_len;

        if(acb->adapter_type >= ACB_ADAPTER_TYPE_B) {
                return(arcmsr_Read_iop_rqbuffer_data_D(acb, prbuffer));
        }
        iop_data = (u_int8_t *)prbuffer->data;
        iop_len = (u_int32_t)prbuffer->data_len;
        while (iop_len > 0) {
                pQbuffer = &acb->rqbuffer[acb->rqbuf_lastindex];
                *pQbuffer = *iop_data;
                acb->rqbuf_lastindex++;
                /* if last, index number set it to 0 */
                acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
                iop_data++;
                iop_len--;
        }
        /* let IOP know data has been read */
        arcmsr_iop_message_read(acb);
        return (1);
}
/*
**************************************************************************
**************************************************************************
*/
static void arcmsr_iop2drv_data_wrote_handle(struct AdapterControlBlock *acb)
{
        struct QBUFFER *prbuffer;
        int my_empty_len;

        /*check this iop data if overflow my rqbuffer*/
        ARCMSR_LOCK_ACQUIRE(&acb->qbuffer_lock);
        prbuffer = arcmsr_get_iop_rqbuffer(acb);
        my_empty_len = (acb->rqbuf_lastindex - acb->rqbuf_firstindex - 1) &
                (ARCMSR_MAX_QBUFFER-1);
        if(my_empty_len >= prbuffer->data_len) {
                if(arcmsr_Read_iop_rqbuffer_data(acb, prbuffer) == 0)
                        acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
        } else {
                acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
        }
        ARCMSR_LOCK_RELEASE(&acb->qbuffer_lock);
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_Write_data_2iop_wqbuffer_D(struct AdapterControlBlock *acb)
{
        u_int8_t *pQbuffer;
        struct QBUFFER *pwbuffer;
        u_int8_t *buf1 = NULL;
        u_int32_t *iop_data, *buf2 = NULL;
        u_int32_t allxfer_len = 0, data_len;

        if(acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READ) {
                buf1 = kmalloc(128, M_DEVBUF, M_NOWAIT | M_ZERO);
                buf2 = (u_int32_t *)buf1;
                if( buf1 == NULL)
                        return;

                acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READ);
                pwbuffer = arcmsr_get_iop_wqbuffer(acb);
                iop_data = (u_int32_t *)pwbuffer->data;
                while((acb->wqbuf_firstindex != acb->wqbuf_lastindex)
                        && (allxfer_len < 124)) {
                        pQbuffer = &acb->wqbuffer[acb->wqbuf_firstindex];
                        *buf1 = *pQbuffer;
                        acb->wqbuf_firstindex++;
                        acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
                        buf1++;
                        allxfer_len++;
                }
                pwbuffer->data_len = allxfer_len;
                data_len = allxfer_len;
                buf1 = (u_int8_t *)buf2;
                while(data_len >= 4)
                {
                        *iop_data++ = *buf2++;
                        data_len -= 4;
                }
                if(data_len)
                        *iop_data = *buf2;
                kfree( buf1, M_DEVBUF);
                arcmsr_iop_message_wrote(acb);
        }
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_Write_data_2iop_wqbuffer(struct AdapterControlBlock *acb)
{
        u_int8_t *pQbuffer;
        struct QBUFFER *pwbuffer;
        u_int8_t *iop_data;
        int32_t allxfer_len=0;

        if(acb->adapter_type >= ACB_ADAPTER_TYPE_B) {
                arcmsr_Write_data_2iop_wqbuffer_D(acb);
                return;
        }
        if(acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READ) {
                acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READ);
                pwbuffer = arcmsr_get_iop_wqbuffer(acb);
                iop_data = (u_int8_t *)pwbuffer->data;
                while((acb->wqbuf_firstindex != acb->wqbuf_lastindex)
                        && (allxfer_len < 124)) {
                        pQbuffer = &acb->wqbuffer[acb->wqbuf_firstindex];
                        *iop_data = *pQbuffer;
                        acb->wqbuf_firstindex++;
                        acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
                        iop_data++;
                        allxfer_len++;
                }
                pwbuffer->data_len = allxfer_len;
                arcmsr_iop_message_wrote(acb);
        }
}
/*
**************************************************************************
**************************************************************************
*/
static void arcmsr_iop2drv_data_read_handle(struct AdapterControlBlock *acb)
{
        ARCMSR_LOCK_ACQUIRE(&acb->qbuffer_lock);
        acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READ;
        /*
        *****************************************************************
        **   check if there are any mail packages from user space program
        **   in my post bag, now is the time to send them into Areca's firmware
        *****************************************************************
        */
        if(acb->wqbuf_firstindex != acb->wqbuf_lastindex) {
                arcmsr_Write_data_2iop_wqbuffer(acb);
        }
        if(acb->wqbuf_firstindex == acb->wqbuf_lastindex) {
                acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED;
        }
        ARCMSR_LOCK_RELEASE(&acb->qbuffer_lock);
}
/*
**************************************************************************
**************************************************************************
*/
static void arcmsr_rescanLun_cb(struct cam_periph *periph, union ccb *ccb)
{
/*
        if (ccb->ccb_h.status != CAM_REQ_CMP)
                kprintf("arcmsr_rescanLun_cb: Rescan Target=%x, lun=%x,"
                        "failure status=%x\n", ccb->ccb_h.target_id,
                        ccb->ccb_h.target_lun, ccb->ccb_h.status);
        else
                kprintf("arcmsr_rescanLun_cb: Rescan lun successfully!\n");
*/
        xpt_free_path(ccb->ccb_h.path);
        xpt_free_ccb(&ccb->ccb_h);
}

static void     arcmsr_rescan_lun(struct AdapterControlBlock *acb, int target, int lun)
{
        struct cam_path     *path;
        union ccb           *ccb;

        if ((ccb = (union ccb *)xpt_alloc_ccb()) == NULL)
                return;
        if (xpt_create_path(&path, xpt_periph, cam_sim_path(acb->psim), target, lun) != CAM_REQ_CMP)
        {
                xpt_free_ccb(&ccb->ccb_h);
                return;
        }
        xpt_setup_ccb(&ccb->ccb_h, path, 5);
        ccb->ccb_h.func_code = XPT_SCAN_LUN;
        ccb->ccb_h.cbfcnp = arcmsr_rescanLun_cb;
        ccb->crcn.flags = CAM_FLAG_NONE;
        xpt_action(ccb);
}


static void arcmsr_abort_dr_ccbs(struct AdapterControlBlock *acb, int target, int lun)
{
        struct CommandControlBlock *srb;
        u_int32_t intmask_org;
        int i;

        /* disable all outbound interrupts */
        intmask_org = arcmsr_disable_allintr(acb);
        for (i = 0; i < ARCMSR_MAX_FREESRB_NUM; i++)
        {
                srb = acb->psrb_pool[i];
                if (srb->srb_state == ARCMSR_SRB_START)
                {
                        if((target == srb->pccb->ccb_h.target_id) && (lun == srb->pccb->ccb_h.target_lun))
                        {
                                srb->srb_state = ARCMSR_SRB_ABORTED;
                                srb->pccb->ccb_h.status |= CAM_REQ_ABORTED;
                                arcmsr_srb_complete(srb, 1);
                                kprintf("arcmsr%d: abort scsi id %d lun %d srb=%p \n", acb->pci_unit, target, lun, srb);
                        }
                }
        }
        /* enable outbound Post Queue, outbound doorbell Interrupt */
        arcmsr_enable_allintr(acb, intmask_org);
}
/*
**************************************************************************
**************************************************************************
*/
static void arcmsr_dr_handle(struct AdapterControlBlock *acb) {
        u_int32_t       devicemap;
        u_int32_t       target, lun;
        u_int32_t       deviceMapCurrent[4]={0};
        u_int8_t        *pDevMap;

        switch (acb->adapter_type) {
        case ACB_ADAPTER_TYPE_A:
                devicemap = offsetof(struct HBA_MessageUnit, msgcode_rwbuffer[ARCMSR_FW_DEVMAP_OFFSET]);
                for (target = 0; target < 4; target++)
                {
                        deviceMapCurrent[target]=bus_space_read_4(acb->btag[0], acb->bhandle[0],  devicemap);
                        devicemap += 4;
                }
                break;

        case ACB_ADAPTER_TYPE_B:
                devicemap = offsetof(struct HBB_RWBUFFER, msgcode_rwbuffer[ARCMSR_FW_DEVMAP_OFFSET]);
                for (target = 0; target < 4; target++)
                {
                        deviceMapCurrent[target]=bus_space_read_4(acb->btag[1], acb->bhandle[1],  devicemap);
                        devicemap += 4;
                }
                break;

        case ACB_ADAPTER_TYPE_C:
                devicemap = offsetof(struct HBC_MessageUnit, msgcode_rwbuffer[ARCMSR_FW_DEVMAP_OFFSET]);
                for (target = 0; target < 4; target++)
                {
                        deviceMapCurrent[target]=bus_space_read_4(acb->btag[0], acb->bhandle[0],  devicemap);
                        devicemap += 4;
                }
                break;
        case ACB_ADAPTER_TYPE_D:
                devicemap = offsetof(struct HBD_MessageUnit, msgcode_rwbuffer[ARCMSR_FW_DEVMAP_OFFSET]);
                for (target = 0; target < 4; target++)
                {
                        deviceMapCurrent[target]=bus_space_read_4(acb->btag[0], acb->bhandle[0],  devicemap);
                        devicemap += 4;
                }
                break;
        case ACB_ADAPTER_TYPE_E:
                devicemap = offsetof(struct HBE_MessageUnit, msgcode_rwbuffer[ARCMSR_FW_DEVMAP_OFFSET]);
                for (target = 0; target < 4; target++)
                {
                        deviceMapCurrent[target]=bus_space_read_4(acb->btag[0], acb->bhandle[0],  devicemap);
                        devicemap += 4;
                }
                break;
        }

        if(acb->acb_flags & ACB_F_BUS_HANG_ON)
        {
                acb->acb_flags &= ~ACB_F_BUS_HANG_ON;
        }
        /*
        ** adapter posted CONFIG message
        ** copy the new map, note if there are differences with the current map
        */
        pDevMap = (u_int8_t *)&deviceMapCurrent[0];
        for (target = 0; target < ARCMSR_MAX_TARGETID - 1; target++)
        {
                if (*pDevMap != acb->device_map[target])
                {
                        u_int8_t difference, bit_check;

                        difference = *pDevMap ^ acb->device_map[target];
                        for(lun=0; lun < ARCMSR_MAX_TARGETLUN; lun++)
                        {
                                bit_check = (1 << lun);         /*check bit from 0....31*/
                                if(difference & bit_check)
                                {
                                        if(acb->device_map[target] & bit_check)
                                        {/* unit departed */
                                                kprintf("arcmsr_dr_handle: Target=%x, lun=%x, GONE!!!\n",target,lun);
                                                arcmsr_abort_dr_ccbs(acb, target, lun);
                                                arcmsr_rescan_lun(acb, target, lun);
                                                acb->devstate[target][lun] = ARECA_RAID_GONE;
                                        }
                                        else
                                        {/* unit arrived */
                                                kprintf("arcmsr_dr_handle: Target=%x, lun=%x, Plug-IN!!!\n",target,lun);
                                                arcmsr_rescan_lun(acb, target, lun);
                                                acb->devstate[target][lun] = ARECA_RAID_GOOD;
                                        }
                                }
                        }
/*                      kprintf("arcmsr_dr_handle: acb->device_map[%x]=0x%x, deviceMapCurrent[%x]=%x\n",target,acb->device_map[target],target,*pDevMap); */
                        acb->device_map[target] = *pDevMap;
                }
                pDevMap++;
        }
}
/*
**************************************************************************
**************************************************************************
*/
static void arcmsr_hba_message_isr(struct AdapterControlBlock *acb) {
        u_int32_t outbound_message;

        CHIP_REG_WRITE32(HBA_MessageUnit, 0, outbound_intstatus, ARCMSR_MU_OUTBOUND_MESSAGE0_INT);
        outbound_message = CHIP_REG_READ32(HBA_MessageUnit, 0, msgcode_rwbuffer[0]);
        if (outbound_message == ARCMSR_SIGNATURE_GET_CONFIG)
                arcmsr_dr_handle( acb );
}
/*
**************************************************************************
**************************************************************************
*/
static void arcmsr_hbb_message_isr(struct AdapterControlBlock *acb) {
        u_int32_t outbound_message;
        struct HBB_MessageUnit *phbbmu = (struct HBB_MessageUnit *)acb->pmu;

        /* clear interrupts */
        WRITE_CHIP_REG32(0, phbbmu->iop2drv_doorbell, ARCMSR_MESSAGE_INT_CLEAR_PATTERN);
        outbound_message = CHIP_REG_READ32(HBB_RWBUFFER, 1, msgcode_rwbuffer[0]);
        if (outbound_message == ARCMSR_SIGNATURE_GET_CONFIG)
                arcmsr_dr_handle( acb );
}
/*
**************************************************************************
**************************************************************************
*/
static void arcmsr_hbc_message_isr(struct AdapterControlBlock *acb) {
        u_int32_t outbound_message;

        CHIP_REG_WRITE32(HBC_MessageUnit, 0, outbound_doorbell_clear, ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR);
        outbound_message = CHIP_REG_READ32(HBC_MessageUnit, 0, msgcode_rwbuffer[0]);
        if (outbound_message == ARCMSR_SIGNATURE_GET_CONFIG)
                arcmsr_dr_handle( acb );
}
/*
**************************************************************************
**************************************************************************
*/
static void arcmsr_hbd_message_isr(struct AdapterControlBlock *acb) {
        u_int32_t outbound_message;

        CHIP_REG_WRITE32(HBD_MessageUnit, 0, outbound_doorbell, ARCMSR_HBDMU_IOP2DRV_MESSAGE_CMD_DONE_CLEAR);
        outbound_message = CHIP_REG_READ32(HBD_MessageUnit, 0, msgcode_rwbuffer[0]);
        if (outbound_message == ARCMSR_SIGNATURE_GET_CONFIG)
                arcmsr_dr_handle( acb );
}
/*
**************************************************************************
**************************************************************************
*/
static void arcmsr_hbe_message_isr(struct AdapterControlBlock *acb) {
        u_int32_t outbound_message;

        CHIP_REG_WRITE32(HBE_MessageUnit, 0, host_int_status, 0);
        outbound_message = CHIP_REG_READ32(HBE_MessageUnit, 0, msgcode_rwbuffer[0]);
        if (outbound_message == ARCMSR_SIGNATURE_GET_CONFIG)
                arcmsr_dr_handle( acb );
}
/*
**************************************************************************
**************************************************************************
*/
static void arcmsr_hba_doorbell_isr(struct AdapterControlBlock *acb)
{
        u_int32_t doorbell_status;

        /*
        *******************************************************************
        **  Maybe here we need to check wrqbuffer_lock is lock or not
        **  DOORBELL: din! don!
        **  check if there are any mail need to pack from firmware
        *******************************************************************
        */
        doorbell_status = CHIP_REG_READ32(HBA_MessageUnit, 0, outbound_doorbell);
        CHIP_REG_WRITE32(HBA_MessageUnit, 0, outbound_doorbell, doorbell_status); /* clear doorbell interrupt */
        if(doorbell_status & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK) {
                arcmsr_iop2drv_data_wrote_handle(acb);
        }
        if(doorbell_status & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK) {
                arcmsr_iop2drv_data_read_handle(acb);
        }
}
/*
**************************************************************************
**************************************************************************
*/
static void arcmsr_hbc_doorbell_isr(struct AdapterControlBlock *acb)
{
        u_int32_t doorbell_status;

        /*
        *******************************************************************
        **  Maybe here we need to check wrqbuffer_lock is lock or not
        **  DOORBELL: din! don!
        **  check if there are any mail need to pack from firmware
        *******************************************************************
        */
        doorbell_status = CHIP_REG_READ32(HBC_MessageUnit, 0, outbound_doorbell);
        CHIP_REG_WRITE32(HBC_MessageUnit, 0, outbound_doorbell_clear, doorbell_status); /* clear doorbell interrupt */
        if(doorbell_status & ARCMSR_HBCMU_IOP2DRV_DATA_WRITE_OK) {
                arcmsr_iop2drv_data_wrote_handle(acb);
        }
        if(doorbell_status & ARCMSR_HBCMU_IOP2DRV_DATA_READ_OK) {
                arcmsr_iop2drv_data_read_handle(acb);
        }
        if(doorbell_status & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
                arcmsr_hbc_message_isr(acb);    /* messenger of "driver to iop commands" */
        }
}
/*
**************************************************************************
**************************************************************************
*/
static void arcmsr_hbd_doorbell_isr(struct AdapterControlBlock *acb)
{
        u_int32_t doorbell_status;

        /*
        *******************************************************************
        **  Maybe here we need to check wrqbuffer_lock is lock or not
        **  DOORBELL: din! don!
        **  check if there are any mail need to pack from firmware
        *******************************************************************
        */
        doorbell_status = CHIP_REG_READ32(HBD_MessageUnit, 0, outbound_doorbell) & ARCMSR_HBDMU_F0_DOORBELL_CAUSE;
        if(doorbell_status)
                CHIP_REG_WRITE32(HBD_MessageUnit, 0, outbound_doorbell, doorbell_status); /* clear doorbell interrupt */
        while( doorbell_status & ARCMSR_HBDMU_F0_DOORBELL_CAUSE ) {
                if(doorbell_status & ARCMSR_HBDMU_IOP2DRV_DATA_WRITE_OK) {
                        arcmsr_iop2drv_data_wrote_handle(acb);
                }
                if(doorbell_status & ARCMSR_HBDMU_IOP2DRV_DATA_READ_OK) {
                        arcmsr_iop2drv_data_read_handle(acb);
                }
                if(doorbell_status & ARCMSR_HBDMU_IOP2DRV_MESSAGE_CMD_DONE) {
                        arcmsr_hbd_message_isr(acb);    /* messenger of "driver to iop commands" */
                }
                doorbell_status = CHIP_REG_READ32(HBD_MessageUnit, 0, outbound_doorbell) & ARCMSR_HBDMU_F0_DOORBELL_CAUSE;
                if(doorbell_status)
                        CHIP_REG_WRITE32(HBD_MessageUnit, 0, outbound_doorbell, doorbell_status); /* clear doorbell interrupt */
        }
}
/*
**************************************************************************
**************************************************************************
*/
static void arcmsr_hbe_doorbell_isr(struct AdapterControlBlock *acb)
{
        u_int32_t doorbell_status, in_doorbell;

        /*
        *******************************************************************
        **  Maybe here we need to check wrqbuffer_lock is lock or not
        **  DOORBELL: din! don!
        **  check if there are any mail need to pack from firmware
        *******************************************************************
        */
        in_doorbell = CHIP_REG_READ32(HBE_MessageUnit, 0, iobound_doorbell);
        CHIP_REG_WRITE32(HBE_MessageUnit, 0, host_int_status, 0); /* clear doorbell interrupt */
        doorbell_status = in_doorbell ^ acb->in_doorbell;
        if(doorbell_status & ARCMSR_HBEMU_IOP2DRV_DATA_WRITE_OK) {
                arcmsr_iop2drv_data_wrote_handle(acb);
        }
        if(doorbell_status & ARCMSR_HBEMU_IOP2DRV_DATA_READ_OK) {
                arcmsr_iop2drv_data_read_handle(acb);
        }
        if(doorbell_status & ARCMSR_HBEMU_IOP2DRV_MESSAGE_CMD_DONE) {
                arcmsr_hbe_message_isr(acb);    /* messenger of "driver to iop commands" */
        }
        acb->in_doorbell = in_doorbell;
}
/*
**************************************************************************
**************************************************************************
*/
static void arcmsr_hba_postqueue_isr(struct AdapterControlBlock *acb)
{
        u_int32_t flag_srb;
        u_int16_t error;

        /*
        *****************************************************************************
        **               areca cdb command done
        *****************************************************************************
        */
        bus_dmamap_sync(acb->srb_dmat, acb->srb_dmamap,
                BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
        while((flag_srb = CHIP_REG_READ32(HBA_MessageUnit,
                0, outbound_queueport)) != 0xFFFFFFFF) {
                /* check if command done with no error*/
        error = (flag_srb & ARCMSR_SRBREPLY_FLAG_ERROR_MODE0) ? TRUE : FALSE;
                arcmsr_drain_donequeue(acb, flag_srb, error);
        }       /*drain reply FIFO*/
}
/*
**************************************************************************
**************************************************************************
*/
static void arcmsr_hbb_postqueue_isr(struct AdapterControlBlock *acb)
{
        struct HBB_MessageUnit *phbbmu = (struct HBB_MessageUnit *)acb->pmu;
        u_int32_t flag_srb;
        int index;
        u_int16_t error;

        /*
        *****************************************************************************
        **               areca cdb command done
        *****************************************************************************
        */
        bus_dmamap_sync(acb->srb_dmat, acb->srb_dmamap,
                BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
        index = phbbmu->doneq_index;
        while((flag_srb = phbbmu->done_qbuffer[index]) != 0) {
                phbbmu->done_qbuffer[index] = 0;
                index++;
                index %= ARCMSR_MAX_HBB_POSTQUEUE;     /*if last index number set it to 0 */
                phbbmu->doneq_index = index;
                /* check if command done with no error*/
        error = (flag_srb & ARCMSR_SRBREPLY_FLAG_ERROR_MODE0)?TRUE:FALSE;
                arcmsr_drain_donequeue(acb, flag_srb, error);
        }       /*drain reply FIFO*/
}
/*
**************************************************************************
**************************************************************************
*/
static void arcmsr_hbc_postqueue_isr(struct AdapterControlBlock *acb)
{
        u_int32_t flag_srb,throttling = 0;
        u_int16_t error;

        /*
        *****************************************************************************
        **               areca cdb command done
        *****************************************************************************
        */
        bus_dmamap_sync(acb->srb_dmat, acb->srb_dmamap, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
        do {
                flag_srb = CHIP_REG_READ32(HBC_MessageUnit, 0, outbound_queueport_low);
                if (flag_srb == 0xFFFFFFFF)
                        break;
                /* check if command done with no error*/
                error = (flag_srb & ARCMSR_SRBREPLY_FLAG_ERROR_MODE1)?TRUE:FALSE;
                arcmsr_drain_donequeue(acb, flag_srb, error);
                throttling++;
                if(throttling == ARCMSR_HBC_ISR_THROTTLING_LEVEL) {
                        CHIP_REG_WRITE32(HBC_MessageUnit, 0, inbound_doorbell,ARCMSR_HBCMU_DRV2IOP_POSTQUEUE_THROTTLING);
                        throttling = 0;
                }
        } while(CHIP_REG_READ32(HBC_MessageUnit, 0, host_int_status) & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR);
}
/*
**********************************************************************
**
**********************************************************************
*/
static uint16_t arcmsr_get_doneq_index(struct HBD_MessageUnit0 *phbdmu)
{
        uint16_t doneq_index, index_stripped;

        doneq_index = phbdmu->doneq_index;
        if (doneq_index & 0x4000) {
                index_stripped = doneq_index & 0xFF;
                index_stripped += 1;
                index_stripped %= ARCMSR_MAX_HBD_POSTQUEUE;
                phbdmu->doneq_index = index_stripped ?
                    (index_stripped | 0x4000) : index_stripped;
        } else {
                index_stripped = doneq_index;
                index_stripped += 1;
                index_stripped %= ARCMSR_MAX_HBD_POSTQUEUE;
                phbdmu->doneq_index = index_stripped ?
                    index_stripped : (index_stripped | 0x4000);
        }
        return (phbdmu->doneq_index);
}
/*
**************************************************************************
**************************************************************************
*/
static void arcmsr_hbd_postqueue_isr(struct AdapterControlBlock *acb)
{
        struct HBD_MessageUnit0 *phbdmu = (struct HBD_MessageUnit0 *)acb->pmu;
        u_int32_t outbound_write_pointer;
        u_int32_t addressLow;
        uint16_t doneq_index;
        u_int16_t error;
        /*
        *****************************************************************************
        **               areca cdb command done
        *****************************************************************************
        */
        if((CHIP_REG_READ32(HBD_MessageUnit, 0, outboundlist_interrupt_cause) &
                ARCMSR_HBDMU_OUTBOUND_LIST_INTERRUPT) == 0)
                return;
        bus_dmamap_sync(acb->srb_dmat, acb->srb_dmamap,
                BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
        outbound_write_pointer = phbdmu->done_qbuffer[0].addressLow;
        doneq_index = phbdmu->doneq_index;
        while ((doneq_index & 0xFF) != (outbound_write_pointer & 0xFF)) {
                doneq_index = arcmsr_get_doneq_index(phbdmu);
                addressLow = phbdmu->done_qbuffer[(doneq_index & 0xFF)+1].addressLow;
                error = (addressLow & ARCMSR_SRBREPLY_FLAG_ERROR_MODE1) ? TRUE : FALSE;
                arcmsr_drain_donequeue(acb, addressLow, error); /*Check if command done with no error */
                CHIP_REG_WRITE32(HBD_MessageUnit, 0, outboundlist_read_pointer, doneq_index);
                outbound_write_pointer = phbdmu->done_qbuffer[0].addressLow;
        }
        CHIP_REG_WRITE32(HBD_MessageUnit, 0, outboundlist_interrupt_cause, ARCMSR_HBDMU_OUTBOUND_LIST_INTERRUPT_CLEAR);
        CHIP_REG_READ32(HBD_MessageUnit, 0, outboundlist_interrupt_cause); /*Dummy ioread32 to force pci flush */
}
/*
**************************************************************************
**************************************************************************
*/
static void arcmsr_hbe_postqueue_isr(struct AdapterControlBlock *acb)
{
        u_int16_t error;
        uint32_t doneq_index;
        uint16_t cmdSMID;

        /*
        *****************************************************************************
        **               areca cdb command done
        *****************************************************************************
        */
        bus_dmamap_sync(acb->srb_dmat, acb->srb_dmamap, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
        doneq_index = acb->doneq_index;
        while ((CHIP_REG_READ32(HBE_MessageUnit, 0, reply_post_producer_index) & 0xFFFF) != doneq_index) {
                cmdSMID = acb->pCompletionQ[doneq_index].cmdSMID;
                error = (acb->pCompletionQ[doneq_index].cmdFlag & ARCMSR_SRBREPLY_FLAG_ERROR_MODE1) ? TRUE : FALSE;
                arcmsr_drain_donequeue(acb, (u_int32_t)cmdSMID, error);
                doneq_index++;
                if (doneq_index >= acb->completionQ_entry)
                        doneq_index = 0;
        }
        acb->doneq_index = doneq_index;
        CHIP_REG_WRITE32(HBE_MessageUnit, 0, reply_post_consumer_index, doneq_index);
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_handle_hba_isr( struct AdapterControlBlock *acb)
{
        u_int32_t outbound_intStatus;
        /*
        *********************************************
        **   check outbound intstatus
        *********************************************
        */
        outbound_intStatus = CHIP_REG_READ32(HBA_MessageUnit, 0, outbound_intstatus) & acb->outbound_int_enable;
        if(!outbound_intStatus) {
                /*it must be share irq*/
                return;
        }
        CHIP_REG_WRITE32(HBA_MessageUnit, 0, outbound_intstatus, outbound_intStatus); /*clear interrupt*/
        /* MU doorbell interrupts*/
        if(outbound_intStatus & ARCMSR_MU_OUTBOUND_DOORBELL_INT) {
                arcmsr_hba_doorbell_isr(acb);
        }
        /* MU post queue interrupts*/
        if(outbound_intStatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT) {
                arcmsr_hba_postqueue_isr(acb);
        }
        if(outbound_intStatus & ARCMSR_MU_OUTBOUND_MESSAGE0_INT) {
                arcmsr_hba_message_isr(acb);
        }
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_handle_hbb_isr( struct AdapterControlBlock *acb)
{
        u_int32_t outbound_doorbell;
        struct HBB_MessageUnit *phbbmu = (struct HBB_MessageUnit *)acb->pmu;
        /*
        *********************************************
        **   check outbound intstatus
        *********************************************
        */
        outbound_doorbell = READ_CHIP_REG32(0, phbbmu->iop2drv_doorbell) & acb->outbound_int_enable;
        if(!outbound_doorbell) {
                /*it must be share irq*/
                return;
        }
        WRITE_CHIP_REG32(0, phbbmu->iop2drv_doorbell, ~outbound_doorbell); /* clear doorbell interrupt */
        READ_CHIP_REG32(0, phbbmu->iop2drv_doorbell);
        WRITE_CHIP_REG32(0, phbbmu->drv2iop_doorbell, ARCMSR_DRV2IOP_END_OF_INTERRUPT);
        /* MU ioctl transfer doorbell interrupts*/
        if(outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK) {
                arcmsr_iop2drv_data_wrote_handle(acb);
        }
        if(outbound_doorbell & ARCMSR_IOP2DRV_DATA_READ_OK) {
                arcmsr_iop2drv_data_read_handle(acb);
        }
        /* MU post queue interrupts*/
        if(outbound_doorbell & ARCMSR_IOP2DRV_CDB_DONE) {
                arcmsr_hbb_postqueue_isr(acb);
        }
        if(outbound_doorbell & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
                arcmsr_hbb_message_isr(acb);
        }
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_handle_hbc_isr( struct AdapterControlBlock *acb)
{
        u_int32_t host_interrupt_status;
        /*
        *********************************************
        **   check outbound intstatus
        *********************************************
        */
        host_interrupt_status = CHIP_REG_READ32(HBC_MessageUnit, 0, host_int_status) &
                (ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR |
                ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR);
        if(!host_interrupt_status) {
                /*it must be share irq*/
                return;
        }
        do {
                /* MU doorbell interrupts*/
                if(host_interrupt_status & ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR) {
                        arcmsr_hbc_doorbell_isr(acb);
                }
                /* MU post queue interrupts*/
                if(host_interrupt_status & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) {
                        arcmsr_hbc_postqueue_isr(acb);
                }
                host_interrupt_status = CHIP_REG_READ32(HBC_MessageUnit, 0, host_int_status);
        } while (host_interrupt_status & (ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR | ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR));
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_handle_hbd_isr( struct AdapterControlBlock *acb)
{
        u_int32_t host_interrupt_status;
        u_int32_t intmask_org;
        /*
        *********************************************
        **   check outbound intstatus
        *********************************************
        */
        host_interrupt_status = CHIP_REG_READ32(HBD_MessageUnit, 0, host_int_status) & acb->outbound_int_enable;
        if(!(host_interrupt_status & ARCMSR_HBDMU_OUTBOUND_INT)) {
                /*it must be share irq*/
                return;
        }
        /* disable outbound interrupt */
        intmask_org = CHIP_REG_READ32(HBD_MessageUnit, 0, pcief0_int_enable)    ; /* disable outbound message0 int */
        CHIP_REG_WRITE32(HBD_MessageUnit, 0, pcief0_int_enable, ARCMSR_HBDMU_ALL_INT_DISABLE);
        /* MU doorbell interrupts*/
        if(host_interrupt_status & ARCMSR_HBDMU_OUTBOUND_DOORBELL_INT) {
                arcmsr_hbd_doorbell_isr(acb);
        }
        /* MU post queue interrupts*/
        if(host_interrupt_status & ARCMSR_HBDMU_OUTBOUND_POSTQUEUE_INT) {
                arcmsr_hbd_postqueue_isr(acb);
        }
        /* enable all outbound interrupt */
        CHIP_REG_WRITE32(HBD_MessageUnit, 0, pcief0_int_enable, intmask_org | ARCMSR_HBDMU_ALL_INT_ENABLE);
//      CHIP_REG_READ32(HBD_MessageUnit, 0, pcief0_int_enable);
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_handle_hbe_isr( struct AdapterControlBlock *acb)
{
        u_int32_t host_interrupt_status;
        /*
        *********************************************
        **   check outbound intstatus
        *********************************************
        */
        host_interrupt_status = CHIP_REG_READ32(HBE_MessageUnit, 0, host_int_status) &
                (ARCMSR_HBEMU_OUTBOUND_POSTQUEUE_ISR |
                ARCMSR_HBEMU_OUTBOUND_DOORBELL_ISR);
        if(!host_interrupt_status) {
                /*it must be share irq*/
                return;
        }
        do {
                /* MU doorbell interrupts*/
                if(host_interrupt_status & ARCMSR_HBEMU_OUTBOUND_DOORBELL_ISR) {
                        arcmsr_hbe_doorbell_isr(acb);
                }
                /* MU post queue interrupts*/
                if(host_interrupt_status & ARCMSR_HBEMU_OUTBOUND_POSTQUEUE_ISR) {
                        arcmsr_hbe_postqueue_isr(acb);
                }
                host_interrupt_status = CHIP_REG_READ32(HBE_MessageUnit, 0, host_int_status);
        } while (host_interrupt_status & (ARCMSR_HBEMU_OUTBOUND_POSTQUEUE_ISR | ARCMSR_HBEMU_OUTBOUND_DOORBELL_ISR));
}
/*
******************************************************************************
******************************************************************************
*/
static void arcmsr_interrupt(struct AdapterControlBlock *acb)
{
        switch (acb->adapter_type) {
        case ACB_ADAPTER_TYPE_A:
                arcmsr_handle_hba_isr(acb);
                break;
        case ACB_ADAPTER_TYPE_B:
                arcmsr_handle_hbb_isr(acb);
                break;
        case ACB_ADAPTER_TYPE_C:
                arcmsr_handle_hbc_isr(acb);
                break;
        case ACB_ADAPTER_TYPE_D:
                arcmsr_handle_hbd_isr(acb);
                break;
        case ACB_ADAPTER_TYPE_E:
                arcmsr_handle_hbe_isr(acb);
                break;
        default:
                kprintf("arcmsr%d: interrupt service,"
                " unknown adapter type =%d\n", acb->pci_unit, acb->adapter_type);
                break;
        }
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_intr_handler(void *arg)
{
        struct AdapterControlBlock *acb = (struct AdapterControlBlock *)arg;

        arcmsr_interrupt(acb);
}
/*
******************************************************************************
******************************************************************************
*/
static void     arcmsr_polling_devmap(void *arg)
{
        struct AdapterControlBlock *acb = (struct AdapterControlBlock *)arg;
        switch (acb->adapter_type) {
        case ACB_ADAPTER_TYPE_A:
                CHIP_REG_WRITE32(HBA_MessageUnit, 0, inbound_msgaddr0, ARCMSR_INBOUND_MESG0_GET_CONFIG);
                break;

        case ACB_ADAPTER_TYPE_B: {
                        struct HBB_MessageUnit *phbbmu = (struct HBB_MessageUnit *)acb->pmu;
                        WRITE_CHIP_REG32(0, phbbmu->drv2iop_doorbell, ARCMSR_MESSAGE_GET_CONFIG);
                }
                break;

        case ACB_ADAPTER_TYPE_C:
                CHIP_REG_WRITE32(HBC_MessageUnit, 0, inbound_msgaddr0, ARCMSR_INBOUND_MESG0_GET_CONFIG);
                CHIP_REG_WRITE32(HBC_MessageUnit, 0, inbound_doorbell, ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE);
                break;

        case ACB_ADAPTER_TYPE_D:
                CHIP_REG_WRITE32(HBD_MessageUnit, 0, inbound_msgaddr0, ARCMSR_INBOUND_MESG0_GET_CONFIG);
                break;

        case ACB_ADAPTER_TYPE_E:
                CHIP_REG_WRITE32(HBE_MessageUnit, 0, inbound_msgaddr0, ARCMSR_INBOUND_MESG0_GET_CONFIG);
                acb->out_doorbell ^= ARCMSR_HBEMU_DRV2IOP_MESSAGE_CMD_DONE;
                CHIP_REG_WRITE32(HBE_MessageUnit, 0, iobound_doorbell, acb->out_doorbell);
                break;
        }

        if((acb->acb_flags & ACB_F_SCSISTOPADAPTER) == 0)
        {
                callout_reset(&acb->devmap_callout, 5 * hz, arcmsr_polling_devmap, acb);        /* polling per 5 seconds */
        }
}

/*
*******************************************************************************
**
*******************************************************************************
*/
static void arcmsr_iop_parking(struct AdapterControlBlock *acb)
{
        u_int32_t intmask_org;

        if(acb != NULL) {
                /* stop adapter background rebuild */
                if(acb->acb_flags & ACB_F_MSG_START_BGRB) {
                        intmask_org = arcmsr_disable_allintr(acb);
                        arcmsr_stop_adapter_bgrb(acb);
                        arcmsr_flush_adapter_cache(acb);
                        arcmsr_enable_allintr(acb, intmask_org);
                }
        }
}
/*
***********************************************************************
**
************************************************************************
*/
static u_int32_t arcmsr_iop_ioctlcmd(struct AdapterControlBlock *acb, u_int32_t ioctl_cmd, caddr_t arg)
{
        struct CMD_MESSAGE_FIELD *pcmdmessagefld;
        u_int32_t retvalue = EINVAL;

        pcmdmessagefld = (struct CMD_MESSAGE_FIELD *) arg;
        if(memcmp(pcmdmessagefld->cmdmessage.Signature, "ARCMSR", 6)!=0) {
                return retvalue;
        }
        ARCMSR_LOCK_ACQUIRE(&acb->qbuffer_lock);
        switch(ioctl_cmd) {
        case ARCMSR_MESSAGE_READ_RQBUFFER: {
                        u_int8_t *pQbuffer;
                        u_int8_t *ptmpQbuffer = pcmdmessagefld->messagedatabuffer;
                        u_int32_t allxfer_len=0;

                        while((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
                                && (allxfer_len < 1031)) {
                                /*copy READ QBUFFER to srb*/
                                pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
                                *ptmpQbuffer = *pQbuffer;
                                acb->rqbuf_firstindex++;
                                acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
                                /*if last index number set it to 0 */
                                ptmpQbuffer++;
                                allxfer_len++;
                        }
                        if(acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
                                struct QBUFFER *prbuffer;

                                acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
                                prbuffer = arcmsr_get_iop_rqbuffer(acb);
                                if(arcmsr_Read_iop_rqbuffer_data(acb, prbuffer) == 0)
                                        acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
                        }
                        pcmdmessagefld->cmdmessage.Length = allxfer_len;
                        pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
                        retvalue = ARCMSR_MESSAGE_SUCCESS;
                }
                break;
        case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
                        u_int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
                        u_int8_t *pQbuffer;
                        u_int8_t *ptmpuserbuffer = pcmdmessagefld->messagedatabuffer;

                        user_len = pcmdmessagefld->cmdmessage.Length;
                        /*check if data xfer length of this request will overflow my array qbuffer */
                        wqbuf_lastindex = acb->wqbuf_lastindex;
                        wqbuf_firstindex = acb->wqbuf_firstindex;
                        if(wqbuf_lastindex != wqbuf_firstindex) {
                                arcmsr_Write_data_2iop_wqbuffer(acb);
                                pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_ERROR;
                        } else {
                                my_empty_len = (wqbuf_firstindex - wqbuf_lastindex - 1) &
                                        (ARCMSR_MAX_QBUFFER - 1);
                                if(my_empty_len >= user_len) {
                                        while(user_len > 0) {
                                                /*copy srb data to wqbuffer*/
                                                pQbuffer = &acb->wqbuffer[acb->wqbuf_lastindex];
                                                *pQbuffer = *ptmpuserbuffer;
                                                acb->wqbuf_lastindex++;
                                                acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
                                                /*if last index number set it to 0 */
                                                ptmpuserbuffer++;
                                                user_len--;
                                        }
                                        /*post fist Qbuffer*/
                                        if(acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
                                                acb->acb_flags &= ~ACB_F_MESSAGE_WQBUFFER_CLEARED;
                                                arcmsr_Write_data_2iop_wqbuffer(acb);
                                        }
                                        pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
                                } else {
                                        pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_ERROR;
                                }
                        }
                        retvalue = ARCMSR_MESSAGE_SUCCESS;
                }
                break;
        case ARCMSR_MESSAGE_CLEAR_RQBUFFER: {
                        u_int8_t *pQbuffer = acb->rqbuffer;

                        if(acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
                                acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
                                arcmsr_iop_message_read(acb);
                                /*signature, let IOP know data has been readed */
                        }
                        acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
                        acb->rqbuf_firstindex = 0;
                        acb->rqbuf_lastindex = 0;
                        memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
                        pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
                        retvalue = ARCMSR_MESSAGE_SUCCESS;
                }
                break;
        case ARCMSR_MESSAGE_CLEAR_WQBUFFER:
                {
                        u_int8_t *pQbuffer = acb->wqbuffer;

                        if(acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
                                acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
                                arcmsr_iop_message_read(acb);
                                /*signature, let IOP know data has been readed */
                        }
                        acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED|ACB_F_MESSAGE_WQBUFFER_READ);
                        acb->wqbuf_firstindex = 0;
                        acb->wqbuf_lastindex = 0;
                        memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
                        pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
                        retvalue = ARCMSR_MESSAGE_SUCCESS;
                }
                break;
        case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: {
                        u_int8_t *pQbuffer;

                        if(acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
                                acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
                                arcmsr_iop_message_read(acb);
                                /*signature, let IOP know data has been readed */
                        }
                        acb->acb_flags  |= (ACB_F_MESSAGE_WQBUFFER_CLEARED
                                        |ACB_F_MESSAGE_RQBUFFER_CLEARED
                                        |ACB_F_MESSAGE_WQBUFFER_READ);
                        acb->rqbuf_firstindex = 0;
                        acb->rqbuf_lastindex = 0;
                        acb->wqbuf_firstindex = 0;
                        acb->wqbuf_lastindex = 0;
                        pQbuffer = acb->rqbuffer;
                        memset(pQbuffer, 0, sizeof(struct QBUFFER));
                        pQbuffer = acb->wqbuffer;
                        memset(pQbuffer, 0, sizeof(struct QBUFFER));
                        pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
                        retvalue = ARCMSR_MESSAGE_SUCCESS;
                }
                break;
        case ARCMSR_MESSAGE_REQUEST_RETURNCODE_3F: {
                        pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_3F;
                        retvalue = ARCMSR_MESSAGE_SUCCESS;
                }
                break;
        case ARCMSR_MESSAGE_SAY_HELLO: {
                        u_int8_t *hello_string = "Hello! I am ARCMSR";
                        u_int8_t *puserbuffer = (u_int8_t *)pcmdmessagefld->messagedatabuffer;

                        if(memcpy(puserbuffer, hello_string, (int16_t)strlen(hello_string))) {
                                pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_ERROR;
                                ARCMSR_LOCK_RELEASE(&acb->qbuffer_lock);
                                return ENOIOCTL;
                        }
                        pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
                        retvalue = ARCMSR_MESSAGE_SUCCESS;
                }
                break;
        case ARCMSR_MESSAGE_SAY_GOODBYE: {
                        arcmsr_iop_parking(acb);
                        retvalue = ARCMSR_MESSAGE_SUCCESS;
                }
                break;
        case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE: {
                        arcmsr_flush_adapter_cache(acb);
                        retvalue = ARCMSR_MESSAGE_SUCCESS;
                }
                break;
        }
        ARCMSR_LOCK_RELEASE(&acb->qbuffer_lock);
        return (retvalue);
}
/*
**************************************************************************
**************************************************************************
*/
static void arcmsr_free_srb(struct CommandControlBlock *srb)
{
        struct AdapterControlBlock      *acb;

        acb = srb->acb;
        ARCMSR_LOCK_ACQUIRE(&acb->srb_lock);
        srb->srb_state = ARCMSR_SRB_DONE;
        srb->srb_flags = 0;
        acb->srbworkingQ[acb->workingsrb_doneindex] = srb;
        acb->workingsrb_doneindex++;
        acb->workingsrb_doneindex %= ARCMSR_MAX_FREESRB_NUM;
        ARCMSR_LOCK_RELEASE(&acb->srb_lock);
}
/*
**************************************************************************
**************************************************************************
*/
static struct CommandControlBlock *arcmsr_get_freesrb(struct AdapterControlBlock *acb)
{
        struct CommandControlBlock *srb = NULL;
        u_int32_t workingsrb_startindex, workingsrb_doneindex;

        ARCMSR_LOCK_ACQUIRE(&acb->srb_lock);
        workingsrb_doneindex = acb->workingsrb_doneindex;
        workingsrb_startindex = acb->workingsrb_startindex;
        srb = acb->srbworkingQ[workingsrb_startindex];
        workingsrb_startindex++;
        workingsrb_startindex %= ARCMSR_MAX_FREESRB_NUM;
        if(workingsrb_doneindex != workingsrb_startindex) {
                acb->workingsrb_startindex = workingsrb_startindex;
        } else {
                srb = NULL;
        }
        ARCMSR_LOCK_RELEASE(&acb->srb_lock);
        return(srb);
}
/*
**************************************************************************
**************************************************************************
*/
static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, union ccb *pccb)
{
        struct CMD_MESSAGE_FIELD *pcmdmessagefld;
        int retvalue = 0, transfer_len = 0;
        char *buffer;
        u_int32_t controlcode = (u_int32_t ) pccb->csio.cdb_io.cdb_bytes[5] << 24 |
                                (u_int32_t ) pccb->csio.cdb_io.cdb_bytes[6] << 16 |
                                (u_int32_t ) pccb->csio.cdb_io.cdb_bytes[7] << 8  |
                                (u_int32_t ) pccb->csio.cdb_io.cdb_bytes[8];
                                        /* 4 bytes: Areca io control code */
        if((pccb->ccb_h.flags & CAM_SCATTER_VALID) == 0) {
                buffer = pccb->csio.data_ptr;
                transfer_len = pccb->csio.dxfer_len;
        } else {
                retvalue = ARCMSR_MESSAGE_FAIL;
                goto message_out;
        }
        if (transfer_len > sizeof(struct CMD_MESSAGE_FIELD)) {
                retvalue = ARCMSR_MESSAGE_FAIL;
                goto message_out;
        }
        pcmdmessagefld = (struct CMD_MESSAGE_FIELD *) buffer;
        switch(controlcode) {
        case ARCMSR_MESSAGE_READ_RQBUFFER: {
                        u_int8_t *pQbuffer;
                        u_int8_t *ptmpQbuffer = pcmdmessagefld->messagedatabuffer;
                        int32_t allxfer_len = 0;

                        ARCMSR_LOCK_ACQUIRE(&acb->qbuffer_lock);
                        while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
                                && (allxfer_len < 1031)) {
                                pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
                                *ptmpQbuffer = *pQbuffer;
                                acb->rqbuf_firstindex++;
                                acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
                                ptmpQbuffer++;
                                allxfer_len++;
                        }
                        if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
                                struct QBUFFER  *prbuffer;

                                acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
                                prbuffer = arcmsr_get_iop_rqbuffer(acb);
                                if(arcmsr_Read_iop_rqbuffer_data(acb, prbuffer) == 0)
                                        acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
                        }
                        pcmdmessagefld->cmdmessage.Length = allxfer_len;
                        pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
                        retvalue = ARCMSR_MESSAGE_SUCCESS;
                        ARCMSR_LOCK_RELEASE(&acb->qbuffer_lock);
                }
                break;
        case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
                        int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
                        u_int8_t *pQbuffer;
                        u_int8_t *ptmpuserbuffer = pcmdmessagefld->messagedatabuffer;

                        user_len = pcmdmessagefld->cmdmessage.Length;
                        ARCMSR_LOCK_ACQUIRE(&acb->qbuffer_lock);
                        wqbuf_lastindex = acb->wqbuf_lastindex;
                        wqbuf_firstindex = acb->wqbuf_firstindex;
                        if (wqbuf_lastindex != wqbuf_firstindex) {
                                arcmsr_Write_data_2iop_wqbuffer(acb);
                                /* has error report sensedata */
                                if(pccb->csio.sense_len) {
                                ((u_int8_t *)&pccb->csio.sense_data)[0] = (0x1 << 7 | 0x70);
                                /* Valid,ErrorCode */
                                ((u_int8_t *)&pccb->csio.sense_data)[2] = 0x05;
                                /* FileMark,EndOfMedia,IncorrectLength,Reserved,SenseKey */
                                ((u_int8_t *)&pccb->csio.sense_data)[7] = 0x0A;
                                /* AdditionalSenseLength */
                                ((u_int8_t *)&pccb->csio.sense_data)[12] = 0x20;
                                /* AdditionalSenseCode */
                                }
                                retvalue = ARCMSR_MESSAGE_FAIL;
                        } else {
                                my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
                                                &(ARCMSR_MAX_QBUFFER - 1);
                                if (my_empty_len >= user_len) {
                                        while (user_len > 0) {
                                                pQbuffer = &acb->wqbuffer[acb->wqbuf_lastindex];
                                                *pQbuffer = *ptmpuserbuffer;
                                                acb->wqbuf_lastindex++;
                                                acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
                                                ptmpuserbuffer++;
                                                user_len--;
                                        }
                                        if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
                                                acb->acb_flags &=
                                                    ~ACB_F_MESSAGE_WQBUFFER_CLEARED;
                                                arcmsr_Write_data_2iop_wqbuffer(acb);
                                        }
                                } else {
                                        /* has error report sensedata */
                                        if(pccb->csio.sense_len) {
                                        ((u_int8_t *)&pccb->csio.sense_data)[0] = (0x1 << 7 | 0x70);
                                        /* Valid,ErrorCode */
                                        ((u_int8_t *)&pccb->csio.sense_data)[2] = 0x05;
                                        /* FileMark,EndOfMedia,IncorrectLength,Reserved,SenseKey */
                                        ((u_int8_t *)&pccb->csio.sense_data)[7] = 0x0A;
                                        /* AdditionalSenseLength */
                                        ((u_int8_t *)&pccb->csio.sense_data)[12] = 0x20;
                                        /* AdditionalSenseCode */
                                        }
                                        retvalue = ARCMSR_MESSAGE_FAIL;
                                }
                        }
                        ARCMSR_LOCK_RELEASE(&acb->qbuffer_lock);
                }
                break;
        case ARCMSR_MESSAGE_CLEAR_RQBUFFER: {
                        u_int8_t *pQbuffer = acb->rqbuffer;

                        ARCMSR_LOCK_ACQUIRE(&acb->qbuffer_lock);
                        if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
                                acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
                                arcmsr_iop_message_read(acb);
                        }
                        acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
                        acb->rqbuf_firstindex = 0;
                        acb->rqbuf_lastindex = 0;
                        memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
                        pcmdmessagefld->cmdmessage.ReturnCode =
                            ARCMSR_MESSAGE_RETURNCODE_OK;
                        ARCMSR_LOCK_RELEASE(&acb->qbuffer_lock);
                }
                break;
        case ARCMSR_MESSAGE_CLEAR_WQBUFFER: {
                        u_int8_t *pQbuffer = acb->wqbuffer;

                        ARCMSR_LOCK_ACQUIRE(&acb->qbuffer_lock);
                        if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
                                acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
                                arcmsr_iop_message_read(acb);
                        }
                        acb->acb_flags |=
                                (ACB_F_MESSAGE_WQBUFFER_CLEARED |
                                        ACB_F_MESSAGE_WQBUFFER_READ);
                        acb->wqbuf_firstindex = 0;
                        acb->wqbuf_lastindex = 0;
                        memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
                        pcmdmessagefld->cmdmessage.ReturnCode =
                                ARCMSR_MESSAGE_RETURNCODE_OK;
                        ARCMSR_LOCK_RELEASE(&acb->qbuffer_lock);
                }
                break;
        case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: {
                        u_int8_t *pQbuffer;

                        ARCMSR_LOCK_ACQUIRE(&acb->qbuffer_lock);
                        if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
                                acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
                                arcmsr_iop_message_read(acb);
                        }
                        acb->acb_flags |=
                                (ACB_F_MESSAGE_WQBUFFER_CLEARED
                                | ACB_F_MESSAGE_RQBUFFER_CLEARED
                                | ACB_F_MESSAGE_WQBUFFER_READ);
                        acb->rqbuf_firstindex = 0;
                        acb->rqbuf_lastindex = 0;
                        acb->wqbuf_firstindex = 0;
                        acb->wqbuf_lastindex = 0;
                        pQbuffer = acb->rqbuffer;
                        memset(pQbuffer, 0, sizeof (struct QBUFFER));
                        pQbuffer = acb->wqbuffer;
                        memset(pQbuffer, 0, sizeof (struct QBUFFER));
                        pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
                        ARCMSR_LOCK_RELEASE(&acb->qbuffer_lock);
                }
                break;
        case ARCMSR_MESSAGE_REQUEST_RETURNCODE_3F: {
                        pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_3F;
                }
                break;
        case ARCMSR_MESSAGE_SAY_HELLO: {
                        int8_t *hello_string = "Hello! I am ARCMSR";

                        memcpy(pcmdmessagefld->messagedatabuffer, hello_string
                                , (int16_t)strlen(hello_string));
                        pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
                }
                break;
        case ARCMSR_MESSAGE_SAY_GOODBYE:
                arcmsr_iop_parking(acb);
                break;
        case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE:
                arcmsr_flush_adapter_cache(acb);
                break;
        default:
                retvalue = ARCMSR_MESSAGE_FAIL;
        }
message_out:
        return (retvalue);
}
/*
*********************************************************************
*********************************************************************
*/
static void arcmsr_execute_srb(void *arg, bus_dma_segment_t *dm_segs, int nseg, int error)
{
        struct CommandControlBlock *srb = (struct CommandControlBlock *)arg;
        struct AdapterControlBlock *acb = (struct AdapterControlBlock *)srb->acb;
        union ccb *pccb;
        int target, lun;

        pccb = srb->pccb;
        target = pccb->ccb_h.target_id;
        lun = pccb->ccb_h.target_lun;
        acb->pktRequestCount++;
        if(error != 0) {
                if(error != EFBIG) {
                        kprintf("arcmsr%d: unexpected error %x"
                                " returned from 'bus_dmamap_load' \n"
                                , acb->pci_unit, error);
                }
                if((pccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INPROG) {
                        pccb->ccb_h.status |= CAM_REQ_TOO_BIG;
                }
                arcmsr_srb_complete(srb, 0);
                return;
        }
        if(nseg > ARCMSR_MAX_SG_ENTRIES) {
                pccb->ccb_h.status |= CAM_REQ_TOO_BIG;
                arcmsr_srb_complete(srb, 0);
                return;
        }
        if(acb->acb_flags & ACB_F_BUS_RESET) {
                kprintf("arcmsr%d: bus reset and return busy \n", acb->pci_unit);
                pccb->ccb_h.status |= CAM_SCSI_BUS_RESET;
                arcmsr_srb_complete(srb, 0);
                return;
        }
        if(acb->devstate[target][lun] == ARECA_RAID_GONE) {
                u_int8_t block_cmd, cmd;

                cmd = pccb->csio.cdb_io.cdb_bytes[0];
                block_cmd = cmd & 0x0f;
                if(block_cmd == 0x08 || block_cmd == 0x0a) {
                        kprintf("arcmsr%d:block 'read/write' command "
                                "with gone raid volume Cmd=0x%2x, TargetId=%d, Lun=%d \n"
                                , acb->pci_unit, cmd, target, lun);
                        pccb->ccb_h.status |= CAM_DEV_NOT_THERE;
                        arcmsr_srb_complete(srb, 0);
                        return;
                }
        }
        if((pccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
                if(nseg != 0) {
                        ARCMSR_LOCK_ACQUIRE(&acb->io_lock);
                        bus_dmamap_unload(acb->dm_segs_dmat, srb->dm_segs_dmamap);
                        ARCMSR_LOCK_RELEASE(&acb->io_lock);
                }
                arcmsr_srb_complete(srb, 0);
                return;
        }
        if(acb->srboutstandingcount >= acb->maxOutstanding) {
                if((acb->acb_flags & ACB_F_CAM_DEV_QFRZN) == 0)
                {
                        xpt_freeze_simq(acb->psim, 1);
                        acb->acb_flags |= ACB_F_CAM_DEV_QFRZN;
                }
                pccb->ccb_h.status &= ~CAM_SIM_QUEUED;
                pccb->ccb_h.status |= CAM_REQUEUE_REQ;
                arcmsr_srb_complete(srb, 0);
                return;
        }
        pccb->ccb_h.status |= CAM_SIM_QUEUED;
        arcmsr_build_srb(srb, dm_segs, nseg);
        arcmsr_post_srb(acb, srb);
        if (pccb->ccb_h.timeout != CAM_TIME_INFINITY)
        {
                callout_init_lk(&srb->ccb_callout, &srb->acb->isr_lock);
                callout_reset(&srb->ccb_callout, ((pccb->ccb_h.timeout + (ARCMSR_TIMEOUT_DELAY * 1000)) * hz) / 1000, arcmsr_srb_timeout, srb);
                srb->srb_flags |= SRB_FLAG_TIMER_START;
        }
}
/*
*****************************************************************************************
*****************************************************************************************
*/
static u_int8_t arcmsr_seek_cmd2abort(union ccb *abortccb)
{
        struct CommandControlBlock *srb;
        struct AdapterControlBlock *acb = (struct AdapterControlBlock *) abortccb->ccb_h.arcmsr_ccbacb_ptr;
        u_int32_t intmask_org;
        int i = 0;

        acb->num_aborts++;
        /*
        ***************************************************************************
        ** It is the upper layer do abort command this lock just prior to calling us.
        ** First determine if we currently own this command.
        ** Start by searching the device queue. If not found
        ** at all, and the system wanted us to just abort the
        ** command return success.
        ***************************************************************************
        */
        if(acb->srboutstandingcount != 0) {
                /* disable all outbound interrupt */
                intmask_org = arcmsr_disable_allintr(acb);
                for(i=0; i < ARCMSR_MAX_FREESRB_NUM; i++) {
                        srb = acb->psrb_pool[i];
                        if(srb->srb_state == ARCMSR_SRB_START) {
                                if(srb->pccb == abortccb) {
                                        srb->srb_state = ARCMSR_SRB_ABORTED;
                                        kprintf("arcmsr%d:scsi id=%d lun=%jx abort srb '%p'"
                                                "outstanding command \n"
                                                , acb->pci_unit, abortccb->ccb_h.target_id
                                                , (uintmax_t)abortccb->ccb_h.target_lun, srb);
                                        arcmsr_polling_srbdone(acb, srb);
                                        /* enable outbound Post Queue, outbound doorbell Interrupt */
                                        arcmsr_enable_allintr(acb, intmask_org);
                                        return (TRUE);
                                }
                        }
                }
                /* enable outbound Post Queue, outbound doorbell Interrupt */
                arcmsr_enable_allintr(acb, intmask_org);
        }
        return(FALSE);
}
/*
****************************************************************************
****************************************************************************
*/
static void arcmsr_bus_reset(struct AdapterControlBlock *acb)
{
        int retry = 0;

        acb->num_resets++;
        acb->acb_flags |= ACB_F_BUS_RESET;
        while(acb->srboutstandingcount != 0 && retry < 400) {
                arcmsr_interrupt(acb);
                UDELAY(25000);
                retry++;
        }
        arcmsr_iop_reset(acb);
        acb->acb_flags &= ~ACB_F_BUS_RESET;
}
/*
**************************************************************************
**************************************************************************
*/
static void arcmsr_handle_virtual_command(struct AdapterControlBlock *acb,
                union ccb *pccb)
{
        if (pccb->ccb_h.target_lun) {
                pccb->ccb_h.status |= CAM_DEV_NOT_THERE;
                xpt_done(pccb);
                return;
        }
        pccb->ccb_h.status |= CAM_REQ_CMP;
        switch (pccb->csio.cdb_io.cdb_bytes[0]) {
        case INQUIRY: {
                unsigned char inqdata[36];
                char *buffer = pccb->csio.data_ptr;

                inqdata[0] = T_PROCESSOR;       /* Periph Qualifier & Periph Dev Type */
                inqdata[1] = 0;                 /* rem media bit & Dev Type Modifier */
                inqdata[2] = 0;                 /* ISO, ECMA, & ANSI versions */
                inqdata[3] = 0;
                inqdata[4] = 31;                /* length of additional data */
                inqdata[5] = 0;
                inqdata[6] = 0;
                inqdata[7] = 0;
                strncpy(&inqdata[8], "Areca   ", 8);    /* Vendor Identification */
                strncpy(&inqdata[16], "RAID controller ", 16);  /* Product Identification */
                strncpy(&inqdata[32], "R001", 4); /* Product Revision */
                memcpy(buffer, inqdata, sizeof(inqdata));
                xpt_done(pccb);
        }
        break;
        case WRITE_BUFFER:
        case READ_BUFFER: {
                if (arcmsr_iop_message_xfer(acb, pccb)) {
                        pccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR;
                        pccb->csio.scsi_status = SCSI_STATUS_CHECK_COND;
                }
                xpt_done(pccb);
        }
        break;
        default:
                xpt_done(pccb);
        }
}
/*
*********************************************************************
*********************************************************************
*/
static void arcmsr_action(struct cam_sim *psim, union ccb *pccb)
{
        struct AdapterControlBlock *acb;

        acb = (struct AdapterControlBlock *) cam_sim_softc(psim);
        if(acb == NULL) {
                pccb->ccb_h.status |= CAM_REQ_INVALID;
                xpt_done(pccb);
                return;
        }
        switch (pccb->ccb_h.func_code) {
        case XPT_SCSI_IO: {
                        struct CommandControlBlock *srb;
                        int target = pccb->ccb_h.target_id;

                        if(target == 16) {
                                /* virtual device for iop message transfer */
                                arcmsr_handle_virtual_command(acb, pccb);
                                return;
                        }
                        if((srb = arcmsr_get_freesrb(acb)) == NULL) {
                                pccb->ccb_h.status |= CAM_RESRC_UNAVAIL;
                                xpt_done(pccb);
                                return;
                        }
                        pccb->ccb_h.arcmsr_ccbsrb_ptr = srb;
                        pccb->ccb_h.arcmsr_ccbacb_ptr = acb;
                        srb->pccb = pccb;
                        if((pccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
                                if(!(pccb->ccb_h.flags & CAM_SCATTER_VALID)) {
                                        /* Single buffer */
                                        if(!(pccb->ccb_h.flags & CAM_DATA_PHYS)) {
                                                /* Buffer is virtual */
                                                u_int32_t error;

                                                crit_enter();
                                                ARCMSR_LOCK_ACQUIRE(&acb->io_lock);
                                                error = bus_dmamap_load(acb->dm_segs_dmat
                                                        , srb->dm_segs_dmamap
                                                        , pccb->csio.data_ptr
                                                        , pccb->csio.dxfer_len
                                                        , arcmsr_execute_srb, srb, /*flags*/0);
                                                ARCMSR_LOCK_RELEASE(&acb->io_lock);
                                                if(error == EINPROGRESS) {
                                                        xpt_freeze_simq(acb->psim, 1);
                                                        pccb->ccb_h.status |= CAM_RELEASE_SIMQ;
                                                }
                                                crit_exit();
                                        }
                                        else {          /* Buffer is physical */
                                                struct bus_dma_segment seg;

                                                seg.ds_addr = (bus_addr_t)pccb->csio.data_ptr;
                                                seg.ds_len = pccb->csio.dxfer_len;
                                                arcmsr_execute_srb(srb, &seg, 1, 0);
                                        }
                                } else {
                                        /* Scatter/gather list */
                                        struct bus_dma_segment *segs;

                                        if((pccb->ccb_h.flags & CAM_SG_LIST_PHYS) == 0
                                        || (pccb->ccb_h.flags & CAM_DATA_PHYS) != 0) {
                                                pccb->ccb_h.status |= CAM_PROVIDE_FAIL;
                                                xpt_done(pccb);
                                                kfree(srb, M_DEVBUF);
                                                return;
                                        }
                                        segs=(struct bus_dma_segment *)pccb->csio.data_ptr;
                                        arcmsr_execute_srb(srb, segs, pccb->csio.sglist_cnt, 0);
                                }
                        } else {
                                arcmsr_execute_srb(srb, NULL, 0, 0);
                        }
                        break;
                }
        case XPT_TARGET_IO: {
                        /* target mode not yet support vendor specific commands. */
                        pccb->ccb_h.status |= CAM_REQ_CMP;
                        xpt_done(pccb);
                        break;
                }
        case XPT_PATH_INQ: {
                        struct ccb_pathinq *cpi = &pccb->cpi;

                        cpi->version_num = 1;
                        cpi->hba_inquiry = PI_SDTR_ABLE | PI_TAG_ABLE;
                        cpi->target_sprt = 0;
                        cpi->hba_misc = 0;
                        cpi->hba_eng_cnt = 0;
                        cpi->max_target = ARCMSR_MAX_TARGETID;        /* 0-16 */
                        cpi->max_lun = ARCMSR_MAX_TARGETLUN;        /* 0-7 */
                        cpi->initiator_id = ARCMSR_SCSI_INITIATOR_ID; /* 255 */
                        cpi->bus_id = cam_sim_bus(psim);
                        strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
                        strncpy(cpi->hba_vid, "ARCMSR", HBA_IDLEN);
                        strncpy(cpi->dev_name, cam_sim_name(psim), DEV_IDLEN);
                        cpi->unit_number = cam_sim_unit(psim);
                        if(acb->adapter_bus_speed == ACB_BUS_SPEED_12G)
                                cpi->base_transfer_speed = 1200000;
                        else if(acb->adapter_bus_speed == ACB_BUS_SPEED_6G)
                                cpi->base_transfer_speed = 600000;
                        else
                                cpi->base_transfer_speed = 300000;
                        if((acb->vendor_device_id == PCIDevVenIDARC1880) ||
                           (acb->vendor_device_id == PCIDevVenIDARC1884) ||
                           (acb->vendor_device_id == PCIDevVenIDARC1680) ||
                           (acb->vendor_device_id == PCIDevVenIDARC1214))
                        {
                                cpi->transport = XPORT_SAS;
                                cpi->transport_version = 0;
                                cpi->protocol_version = SCSI_REV_SPC2;
                        }
                        else
                        {
                                cpi->transport = XPORT_SPI;
                                cpi->transport_version = 2;
                                cpi->protocol_version = SCSI_REV_2;
                        }
                        cpi->protocol = PROTO_SCSI;
                        cpi->ccb_h.status |= CAM_REQ_CMP;
                        xpt_done(pccb);
                        break;
                }
        case XPT_ABORT: {
                        union ccb *pabort_ccb;

                        pabort_ccb = pccb->cab.abort_ccb;
                        switch (pabort_ccb->ccb_h.func_code) {
                        case XPT_ACCEPT_TARGET_IO:
                        case XPT_IMMED_NOTIFY:
                        case XPT_CONT_TARGET_IO:
                                if(arcmsr_seek_cmd2abort(pabort_ccb)==TRUE) {
                                        pabort_ccb->ccb_h.status |= CAM_REQ_ABORTED;
                                        xpt_done(pabort_ccb);
                                        pccb->ccb_h.status |= CAM_REQ_CMP;
                                } else {
                                        xpt_print_path(pabort_ccb->ccb_h.path);
                                        kprintf("Not found\n");
                                        pccb->ccb_h.status |= CAM_PATH_INVALID;
                                }
                                break;
                        case XPT_SCSI_IO:
                                pccb->ccb_h.status |= CAM_UA_ABORT;
                                break;
                        default:
                                pccb->ccb_h.status |= CAM_REQ_INVALID;
                                break;
                        }
                        xpt_done(pccb);
                        break;
                }
        case XPT_RESET_BUS:
        case XPT_RESET_DEV: {
                        u_int32_t       i;

                        arcmsr_bus_reset(acb);
                        for (i=0; i < 500; i++) {
                                DELAY(1000);
                        }
                        pccb->ccb_h.status |= CAM_REQ_CMP;
                        xpt_done(pccb);
                        break;
                }
        case XPT_TERM_IO: {
                        pccb->ccb_h.status |= CAM_REQ_INVALID;
                        xpt_done(pccb);
                        break;
                }
        case XPT_GET_TRAN_SETTINGS: {
                        struct ccb_trans_settings *cts;

                        if(pccb->ccb_h.target_id == 16) {
                                pccb->ccb_h.status |= CAM_FUNC_NOTAVAIL;
                                xpt_done(pccb);
                                break;
                        }
                        cts = &pccb->cts;
                        {
                                struct ccb_trans_settings_scsi *scsi;
                                struct ccb_trans_settings_spi *spi;
                                struct ccb_trans_settings_sas *sas;

                                scsi = &cts->proto_specific.scsi;
                                scsi->flags = CTS_SCSI_FLAGS_TAG_ENB;
                                scsi->valid = CTS_SCSI_VALID_TQ;
                                cts->protocol = PROTO_SCSI;

                                if((acb->vendor_device_id == PCIDevVenIDARC1880) ||
                                   (acb->vendor_device_id == PCIDevVenIDARC1884) ||
                                   (acb->vendor_device_id == PCIDevVenIDARC1680) ||
                                   (acb->vendor_device_id == PCIDevVenIDARC1214))
                                {
                                        cts->protocol_version = SCSI_REV_SPC2;
                                        cts->transport_version = 0;
                                        cts->transport = XPORT_SAS;
                                        sas = &cts->xport_specific.sas;
                                        sas->valid = CTS_SAS_VALID_SPEED;
                                        if (acb->adapter_bus_speed == ACB_BUS_SPEED_12G)
                                                sas->bitrate = 1200000;
                                        else if(acb->adapter_bus_speed == ACB_BUS_SPEED_6G)
                                                sas->bitrate = 600000;
                                        else if(acb->adapter_bus_speed == ACB_BUS_SPEED_3G)
                                                sas->bitrate = 300000;
                                }
                                else
                                {
                                        cts->protocol_version = SCSI_REV_2;
                                        cts->transport_version = 2;
                                        cts->transport = XPORT_SPI;
                                        spi = &cts->xport_specific.spi;
                                        spi->flags = CTS_SPI_FLAGS_DISC_ENB;
                                        if (acb->adapter_bus_speed == ACB_BUS_SPEED_6G)
                                                spi->sync_period = 1;
                                        else
                                                spi->sync_period = 2;
                                        spi->sync_offset = 32;
                                        spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
                                        spi->valid = CTS_SPI_VALID_DISC
                                                | CTS_SPI_VALID_SYNC_RATE
                                                | CTS_SPI_VALID_SYNC_OFFSET
                                                | CTS_SPI_VALID_BUS_WIDTH;
                                }
                        }
                        pccb->ccb_h.status |= CAM_REQ_CMP;
                        xpt_done(pccb);
                        break;
                }
        case XPT_SET_TRAN_SETTINGS: {
                        pccb->ccb_h.status |= CAM_FUNC_NOTAVAIL;
                        xpt_done(pccb);
                        break;
                }
        case XPT_CALC_GEOMETRY:
                        if(pccb->ccb_h.target_id == 16) {
                                pccb->ccb_h.status |= CAM_FUNC_NOTAVAIL;
                                xpt_done(pccb);
                                break;
                        }
                        cam_calc_geometry(&pccb->ccg, 1);
                        xpt_done(pccb);
                        break;
        default:
                pccb->ccb_h.status |= CAM_REQ_INVALID;
                xpt_done(pccb);
                break;
        }
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_start_hba_bgrb(struct AdapterControlBlock *acb)
{
        acb->acb_flags |= ACB_F_MSG_START_BGRB;
        CHIP_REG_WRITE32(HBA_MessageUnit, 0, inbound_msgaddr0, ARCMSR_INBOUND_MESG0_START_BGRB);
        if(!arcmsr_hba_wait_msgint_ready(acb)) {
                kprintf("arcmsr%d: wait 'start adapter background rebulid' timeout \n", acb->pci_unit);
        }
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_start_hbb_bgrb(struct AdapterControlBlock *acb)
{
        struct HBB_MessageUnit *phbbmu = (struct HBB_MessageUnit *)acb->pmu;
        acb->acb_flags |= ACB_F_MSG_START_BGRB;
        WRITE_CHIP_REG32(0, phbbmu->drv2iop_doorbell, ARCMSR_MESSAGE_START_BGRB);
        if(!arcmsr_hbb_wait_msgint_ready(acb)) {
                kprintf( "arcmsr%d: wait 'start adapter background rebulid' timeout \n", acb->pci_unit);
        }
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_start_hbc_bgrb(struct AdapterControlBlock *acb)
{
        acb->acb_flags |= ACB_F_MSG_START_BGRB;
        CHIP_REG_WRITE32(HBC_MessageUnit, 0, inbound_msgaddr0, ARCMSR_INBOUND_MESG0_START_BGRB);
        CHIP_REG_WRITE32(HBC_MessageUnit, 0, inbound_doorbell, ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE);
        if(!arcmsr_hbc_wait_msgint_ready(acb)) {
                kprintf("arcmsr%d: wait 'start adapter background rebulid' timeout \n", acb->pci_unit);
        }
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_start_hbd_bgrb(struct AdapterControlBlock *acb)
{
        acb->acb_flags |= ACB_F_MSG_START_BGRB;
        CHIP_REG_WRITE32(HBD_MessageUnit, 0, inbound_msgaddr0, ARCMSR_INBOUND_MESG0_START_BGRB);
        if(!arcmsr_hbd_wait_msgint_ready(acb)) {
                kprintf("arcmsr%d: wait 'start adapter background rebulid' timeout \n", acb->pci_unit);
        }
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_start_hbe_bgrb(struct AdapterControlBlock *acb)
{
        acb->acb_flags |= ACB_F_MSG_START_BGRB;
        CHIP_REG_WRITE32(HBE_MessageUnit, 0, inbound_msgaddr0, ARCMSR_INBOUND_MESG0_START_BGRB);
        acb->out_doorbell ^= ARCMSR_HBEMU_DRV2IOP_MESSAGE_CMD_DONE;
        CHIP_REG_WRITE32(HBE_MessageUnit, 0, iobound_doorbell, acb->out_doorbell);
        if(!arcmsr_hbe_wait_msgint_ready(acb)) {
                kprintf("arcmsr%d: wait 'start adapter background rebulid' timeout \n", acb->pci_unit);
        }
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb)
{
        switch (acb->adapter_type) {
        case ACB_ADAPTER_TYPE_A:
                arcmsr_start_hba_bgrb(acb);
                break;
        case ACB_ADAPTER_TYPE_B:
                arcmsr_start_hbb_bgrb(acb);
                break;
        case ACB_ADAPTER_TYPE_C:
                arcmsr_start_hbc_bgrb(acb);
                break;
        case ACB_ADAPTER_TYPE_D:
                arcmsr_start_hbd_bgrb(acb);
                break;
        case ACB_ADAPTER_TYPE_E:
                arcmsr_start_hbe_bgrb(acb);
                break;
        }
}
/*
**********************************************************************
**
**********************************************************************
*/
static void arcmsr_polling_hba_srbdone(struct AdapterControlBlock *acb, struct CommandControlBlock *poll_srb)
{
        struct CommandControlBlock *srb;
        u_int32_t flag_srb, outbound_intstatus, poll_srb_done=0, poll_count=0;
        u_int16_t       error;

polling_ccb_retry:
        poll_count++;
        outbound_intstatus=CHIP_REG_READ32(HBA_MessageUnit, 0, outbound_intstatus) & acb->outbound_int_enable;
        CHIP_REG_WRITE32(HBA_MessageUnit, 0, outbound_intstatus, outbound_intstatus);   /*clear interrupt*/
        bus_dmamap_sync(acb->srb_dmat, acb->srb_dmamap, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
        while(1) {
                if((flag_srb = CHIP_REG_READ32(HBA_MessageUnit,
                        0, outbound_queueport)) == 0xFFFFFFFF) {
                        if(poll_srb_done) {
                                break;/*chip FIFO no ccb for completion already*/
                        } else {
                                UDELAY(25000);
                                if ((poll_count > 100) && (poll_srb != NULL)) {
                                        break;
                                }
                                goto polling_ccb_retry;
                        }
                }
                /* check if command done with no error*/
                srb = (struct CommandControlBlock *)
                        (acb->vir2phy_offset+(flag_srb << 5));/*frame must be 32 bytes aligned*/
                error = (flag_srb & ARCMSR_SRBREPLY_FLAG_ERROR_MODE0)?TRUE:FALSE;
                poll_srb_done = (srb == poll_srb) ? 1:0;
                if((srb->acb != acb) || (srb->srb_state != ARCMSR_SRB_START)) {
                        if(srb->srb_state == ARCMSR_SRB_ABORTED) {
                                kprintf("arcmsr%d: scsi id=%d lun=%jx srb='%p'"
                                        "poll command abort successfully \n"
                                        , acb->pci_unit
                                        , srb->pccb->ccb_h.target_id
                                        , (uintmax_t)srb->pccb->ccb_h.target_lun, srb);
                                srb->pccb->ccb_h.status |= CAM_REQ_ABORTED;
                                arcmsr_srb_complete(srb, 1);
                                continue;
                        }
                        kprintf("arcmsr%d: polling get an illegal srb command done srb='%p'"
                                "srboutstandingcount=%d \n"
                                , acb->pci_unit
                                , srb, acb->srboutstandingcount);
                        continue;
                }
                arcmsr_report_srb_state(acb, srb, error);
        }       /*drain reply FIFO*/
}
/*
**********************************************************************
**
**********************************************************************
*/
static void arcmsr_polling_hbb_srbdone(struct AdapterControlBlock *acb, struct CommandControlBlock *poll_srb)
{
        struct HBB_MessageUnit *phbbmu = (struct HBB_MessageUnit *)acb->pmu;
        struct CommandControlBlock *srb;
        u_int32_t flag_srb, poll_srb_done=0, poll_count=0;
        int index;
        u_int16_t       error;

polling_ccb_retry:
        poll_count++;
        WRITE_CHIP_REG32(0, phbbmu->iop2drv_doorbell, ARCMSR_DOORBELL_INT_CLEAR_PATTERN); /* clear doorbell interrupt */
        bus_dmamap_sync(acb->srb_dmat, acb->srb_dmamap, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
        while(1) {
                index = phbbmu->doneq_index;
                if((flag_srb = phbbmu->done_qbuffer[index]) == 0) {
                        if(poll_srb_done) {
                                break;/*chip FIFO no ccb for completion already*/
                        } else {
                                UDELAY(25000);
                                if ((poll_count > 100) && (poll_srb != NULL)) {
                                        break;
                                }
                                goto polling_ccb_retry;
                        }
                }
                phbbmu->done_qbuffer[index] = 0;
                index++;
                index %= ARCMSR_MAX_HBB_POSTQUEUE;     /*if last index number set it to 0 */
                phbbmu->doneq_index = index;
                /* check if command done with no error*/
                srb = (struct CommandControlBlock *)
                        (acb->vir2phy_offset+(flag_srb << 5));/*frame must be 32 bytes aligned*/
                error = (flag_srb & ARCMSR_SRBREPLY_FLAG_ERROR_MODE0)?TRUE:FALSE;
                poll_srb_done = (srb == poll_srb) ? 1:0;
                if((srb->acb != acb) || (srb->srb_state != ARCMSR_SRB_START)) {
                        if(srb->srb_state == ARCMSR_SRB_ABORTED) {
                                kprintf("arcmsr%d: scsi id=%d lun=%jx srb='%p'"
                                        "poll command abort successfully \n"
                                        , acb->pci_unit
                                        , srb->pccb->ccb_h.target_id
                                        , (uintmax_t)srb->pccb->ccb_h.target_lun, srb);
                                srb->pccb->ccb_h.status |= CAM_REQ_ABORTED;
                                arcmsr_srb_complete(srb, 1);
                                continue;
                        }
                        kprintf("arcmsr%d: polling get an illegal srb command done srb='%p'"
                                "srboutstandingcount=%d \n"
                                , acb->pci_unit
                                , srb, acb->srboutstandingcount);
                        continue;
                }
                arcmsr_report_srb_state(acb, srb, error);
        }       /*drain reply FIFO*/
}
/*
**********************************************************************
**
**********************************************************************
*/
static void arcmsr_polling_hbc_srbdone(struct AdapterControlBlock *acb, struct CommandControlBlock *poll_srb)
{
        struct CommandControlBlock *srb;
        u_int32_t flag_srb, poll_srb_done=0, poll_count=0;
        u_int16_t       error;

polling_ccb_retry:
        poll_count++;
        bus_dmamap_sync(acb->srb_dmat, acb->srb_dmamap, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
        while(1) {
                if(!(CHIP_REG_READ32(HBC_MessageUnit, 0, host_int_status) & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR)) {
                        if(poll_srb_done) {
                                break;/*chip FIFO no ccb for completion already*/
                        } else {
                                UDELAY(25000);
                                if ((poll_count > 100) && (poll_srb != NULL)) {
                                        break;
                                }
                                if (acb->srboutstandingcount == 0) {
                                    break;
                                }
                                goto polling_ccb_retry;
                        }
                }
                flag_srb = CHIP_REG_READ32(HBC_MessageUnit, 0, outbound_queueport_low);
                /* check if command done with no error*/
                srb = (struct CommandControlBlock *)(acb->vir2phy_offset+(flag_srb & 0xFFFFFFE0));/*frame must be 32 bytes aligned*/
                error = (flag_srb & ARCMSR_SRBREPLY_FLAG_ERROR_MODE1)?TRUE:FALSE;
                if (poll_srb != NULL)
                        poll_srb_done = (srb == poll_srb) ? 1:0;
                if((srb->acb != acb) || (srb->srb_state != ARCMSR_SRB_START)) {
                        if(srb->srb_state == ARCMSR_SRB_ABORTED) {
                                kprintf("arcmsr%d: scsi id=%d lun=%jx srb='%p'poll command abort successfully \n"
                                                , acb->pci_unit, srb->pccb->ccb_h.target_id, (uintmax_t)srb->pccb->ccb_h.target_lun, srb);
                                srb->pccb->ccb_h.status |= CAM_REQ_ABORTED;
                                arcmsr_srb_complete(srb, 1);
                                continue;
                        }
                        kprintf("arcmsr%d: polling get an illegal srb command done srb='%p'srboutstandingcount=%d \n"
                                        , acb->pci_unit, srb, acb->srboutstandingcount);
                        continue;
                }
                arcmsr_report_srb_state(acb, srb, error);
        }       /*drain reply FIFO*/
}
/*
**********************************************************************
**
**********************************************************************
*/
static void arcmsr_polling_hbd_srbdone(struct AdapterControlBlock *acb, struct CommandControlBlock *poll_srb)
{
        struct HBD_MessageUnit0 *phbdmu = (struct HBD_MessageUnit0 *)acb->pmu;
        struct CommandControlBlock *srb;
        u_int32_t flag_srb, poll_srb_done=0, poll_count=0;
        u_int32_t outbound_write_pointer;
        u_int16_t       error, doneq_index;

polling_ccb_retry:
        poll_count++;
        bus_dmamap_sync(acb->srb_dmat, acb->srb_dmamap, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
        while(1) {
                outbound_write_pointer = phbdmu->done_qbuffer[0].addressLow;
                doneq_index = phbdmu->doneq_index;
                if ((outbound_write_pointer & 0xFF) == (doneq_index & 0xFF)) {
                        if(poll_srb_done) {
                                break;/*chip FIFO no ccb for completion already*/
                        } else {
                                UDELAY(25000);
                                if ((poll_count > 100) && (poll_srb != NULL)) {
                                        break;
                                }
                                if (acb->srboutstandingcount == 0) {
                                        break;
                                }
                                goto polling_ccb_retry;
                        }
                }
                doneq_index = arcmsr_get_doneq_index(phbdmu);
                flag_srb = phbdmu->done_qbuffer[(doneq_index & 0xFF)+1].addressLow;
                /* check if command done with no error*/
                srb = (struct CommandControlBlock *)(acb->vir2phy_offset+(flag_srb & 0xFFFFFFE0));/*frame must be 32 bytes aligned*/
                error = (flag_srb & ARCMSR_SRBREPLY_FLAG_ERROR_MODE1) ? TRUE : FALSE;
                CHIP_REG_WRITE32(HBD_MessageUnit, 0, outboundlist_read_pointer, doneq_index);
                if (poll_srb != NULL)
                        poll_srb_done = (srb == poll_srb) ? 1:0;
                if((srb->acb != acb) || (srb->srb_state != ARCMSR_SRB_START)) {
                        if(srb->srb_state == ARCMSR_SRB_ABORTED) {
                                kprintf("arcmsr%d: scsi id=%d lun=%jx srb='%p'poll command abort successfully \n"
                                                , acb->pci_unit, srb->pccb->ccb_h.target_id, (uintmax_t)srb->pccb->ccb_h.target_lun, srb);
                                srb->pccb->ccb_h.status |= CAM_REQ_ABORTED;
                                arcmsr_srb_complete(srb, 1);
                                continue;
                        }
                        kprintf("arcmsr%d: polling get an illegal srb command done srb='%p'srboutstandingcount=%d \n"
                                        , acb->pci_unit, srb, acb->srboutstandingcount);
                        continue;
                }
                arcmsr_report_srb_state(acb, srb, error);
        }       /*drain reply FIFO*/
}
/*
**********************************************************************
**
**********************************************************************
*/
static void arcmsr_polling_hbe_srbdone(struct AdapterControlBlock *acb, struct CommandControlBlock *poll_srb)
{
        struct CommandControlBlock *srb;
        u_int32_t poll_srb_done=0, poll_count=0, doneq_index;
        u_int16_t       error, cmdSMID;

polling_ccb_retry:
        poll_count++;
        bus_dmamap_sync(acb->srb_dmat, acb->srb_dmamap, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
        while(1) {
                doneq_index = acb->doneq_index;
                if((CHIP_REG_READ32(HBE_MessageUnit, 0, reply_post_producer_index) & 0xFFFF) == doneq_index) {
                        if(poll_srb_done) {
                                break;/*chip FIFO no ccb for completion already*/
                        } else {
                                UDELAY(25000);
                            if ((poll_count > 100) && (poll_srb != NULL)) {
                                        break;
                                }
                            if (acb->srboutstandingcount == 0) {
                                    break;
                            }
                                goto polling_ccb_retry;
                        }
                }
                cmdSMID = acb->pCompletionQ[doneq_index].cmdSMID;
                doneq_index++;
                if (doneq_index >= acb->completionQ_entry)
                        doneq_index = 0;
                acb->doneq_index = doneq_index;
                srb = acb->psrb_pool[cmdSMID];
                error = (acb->pCompletionQ[doneq_index].cmdFlag & ARCMSR_SRBREPLY_FLAG_ERROR_MODE1) ? TRUE : FALSE;
                if (poll_srb != NULL)
                        poll_srb_done = (srb == poll_srb) ? 1:0;
                if((srb->acb != acb) || (srb->srb_state != ARCMSR_SRB_START)) {
                        if(srb->srb_state == ARCMSR_SRB_ABORTED) {
                                kprintf("arcmsr%d: scsi id=%d lun=%jx srb='%p'poll command abort successfully \n"
                                                , acb->pci_unit, srb->pccb->ccb_h.target_id, (uintmax_t)srb->pccb->ccb_h.target_lun, srb);
                                srb->pccb->ccb_h.status |= CAM_REQ_ABORTED;
                                arcmsr_srb_complete(srb, 1);
                                continue;
                        }
                        kprintf("arcmsr%d: polling get an illegal srb command done srb='%p'srboutstandingcount=%d \n"
                                        , acb->pci_unit, srb, acb->srboutstandingcount);
                        continue;
                }
                arcmsr_report_srb_state(acb, srb, error);
        }       /*drain reply FIFO*/
        CHIP_REG_WRITE32(HBE_MessageUnit, 0, reply_post_producer_index, doneq_index);
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_polling_srbdone(struct AdapterControlBlock *acb, struct CommandControlBlock *poll_srb)
{
        switch (acb->adapter_type) {
        case ACB_ADAPTER_TYPE_A: {
                        arcmsr_polling_hba_srbdone(acb, poll_srb);
                }
                break;
        case ACB_ADAPTER_TYPE_B: {
                        arcmsr_polling_hbb_srbdone(acb, poll_srb);
                }
                break;
        case ACB_ADAPTER_TYPE_C: {
                        arcmsr_polling_hbc_srbdone(acb, poll_srb);
                }
                break;
        case ACB_ADAPTER_TYPE_D: {
                        arcmsr_polling_hbd_srbdone(acb, poll_srb);
                }
                break;
        case ACB_ADAPTER_TYPE_E: {
                        arcmsr_polling_hbe_srbdone(acb, poll_srb);
                }
                break;
        }
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_get_hba_config(struct AdapterControlBlock *acb)
{
        char *acb_firm_model = acb->firm_model;
        char *acb_firm_version = acb->firm_version;
        char *acb_device_map = acb->device_map;
        size_t iop_firm_model = offsetof(struct HBA_MessageUnit,msgcode_rwbuffer[ARCMSR_FW_MODEL_OFFSET]);      /*firm_model,15,60-67*/
        size_t iop_firm_version = offsetof(struct HBA_MessageUnit,msgcode_rwbuffer[ARCMSR_FW_VERS_OFFSET]);     /*firm_version,17,68-83*/
        size_t iop_device_map = offsetof(struct HBA_MessageUnit,msgcode_rwbuffer[ARCMSR_FW_DEVMAP_OFFSET]);
        int i;

        CHIP_REG_WRITE32(HBA_MessageUnit, 0, inbound_msgaddr0, ARCMSR_INBOUND_MESG0_GET_CONFIG);
        if(!arcmsr_hba_wait_msgint_ready(acb)) {
                kprintf("arcmsr%d: wait 'get adapter firmware miscellaneous data' timeout \n", acb->pci_unit);
        }
        i = 0;
        while(i < 8) {
                *acb_firm_model = bus_space_read_1(acb->btag[0], acb->bhandle[0], iop_firm_model+i);
                /* 8 bytes firm_model, 15, 60-67*/
                acb_firm_model++;
                i++;
        }
        i=0;
        while(i < 16) {
                *acb_firm_version = bus_space_read_1(acb->btag[0], acb->bhandle[0], iop_firm_version+i);
                /* 16 bytes firm_version, 17, 68-83*/
                acb_firm_version++;
                i++;
        }
        i=0;
        while(i < 16) {
                *acb_device_map = bus_space_read_1(acb->btag[0], acb->bhandle[0], iop_device_map+i);
                acb_device_map++;
                i++;
        }
        kprintf("Areca RAID adapter%d: %s F/W version %s \n", acb->pci_unit, acb->firm_model, acb->firm_version);
        acb->firm_request_len = CHIP_REG_READ32(HBA_MessageUnit, 0, msgcode_rwbuffer[1]);   /*firm_request_len, 1, 04-07*/
        acb->firm_numbers_queue = CHIP_REG_READ32(HBA_MessageUnit, 0, msgcode_rwbuffer[2]); /*firm_numbers_queue, 2, 08-11*/
        acb->firm_sdram_size = CHIP_REG_READ32(HBA_MessageUnit, 0, msgcode_rwbuffer[3]);    /*firm_sdram_size, 3, 12-15*/
        acb->firm_ide_channels = CHIP_REG_READ32(HBA_MessageUnit, 0, msgcode_rwbuffer[4]);  /*firm_ide_channels, 4, 16-19*/
        acb->firm_cfg_version = CHIP_REG_READ32(HBA_MessageUnit, 0, msgcode_rwbuffer[ARCMSR_FW_CFGVER_OFFSET]); /*firm_cfg_version,  25,          */
        if(acb->firm_numbers_queue > ARCMSR_MAX_OUTSTANDING_CMD)
                acb->maxOutstanding = ARCMSR_MAX_OUTSTANDING_CMD - 1;
        else
                acb->maxOutstanding = acb->firm_numbers_queue - 1;
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_get_hbb_config(struct AdapterControlBlock *acb)
{
        struct HBB_MessageUnit *phbbmu = (struct HBB_MessageUnit *)acb->pmu;
        char *acb_firm_model = acb->firm_model;
        char *acb_firm_version = acb->firm_version;
        char *acb_device_map = acb->device_map;
        size_t iop_firm_model = offsetof(struct HBB_RWBUFFER, msgcode_rwbuffer[ARCMSR_FW_MODEL_OFFSET]);        /*firm_model,15,60-67*/
        size_t iop_firm_version = offsetof(struct HBB_RWBUFFER, msgcode_rwbuffer[ARCMSR_FW_VERS_OFFSET]);       /*firm_version,17,68-83*/
        size_t iop_device_map = offsetof(struct HBB_RWBUFFER, msgcode_rwbuffer[ARCMSR_FW_DEVMAP_OFFSET]);
        int i;

        WRITE_CHIP_REG32(0, phbbmu->drv2iop_doorbell, ARCMSR_MESSAGE_GET_CONFIG);
        if(!arcmsr_hbb_wait_msgint_ready(acb)) {
                kprintf( "arcmsr%d: wait" "'get adapter firmware miscellaneous data' timeout \n", acb->pci_unit);
        }
        i = 0;
        while(i < 8) {
                *acb_firm_model = bus_space_read_1(acb->btag[1], acb->bhandle[1], iop_firm_model+i);
                /* 8 bytes firm_model, 15, 60-67*/
                acb_firm_model++;
                i++;
        }
        i = 0;
        while(i < 16) {
                *acb_firm_version = bus_space_read_1(acb->btag[1], acb->bhandle[1], iop_firm_version+i);
                /* 16 bytes firm_version, 17, 68-83*/
                acb_firm_version++;
                i++;
        }
        i = 0;
        while(i < 16) {
                *acb_device_map = bus_space_read_1(acb->btag[1], acb->bhandle[1], iop_device_map+i);
                acb_device_map++;
                i++;
        }
        kprintf("Areca RAID adapter%d: %s F/W version %s \n", acb->pci_unit, acb->firm_model, acb->firm_version);
        acb->firm_request_len = CHIP_REG_READ32(HBB_RWBUFFER, 1, msgcode_rwbuffer[1]);   /*firm_request_len, 1, 04-07*/
        acb->firm_numbers_queue = CHIP_REG_READ32(HBB_RWBUFFER, 1, msgcode_rwbuffer[2]); /*firm_numbers_queue, 2, 08-11*/
        acb->firm_sdram_size = CHIP_REG_READ32(HBB_RWBUFFER, 1, msgcode_rwbuffer[3]);    /*firm_sdram_size, 3, 12-15*/
        acb->firm_ide_channels = CHIP_REG_READ32(HBB_RWBUFFER, 1, msgcode_rwbuffer[4]);  /*firm_ide_channels, 4, 16-19*/
        acb->firm_cfg_version = CHIP_REG_READ32(HBB_RWBUFFER, 1, msgcode_rwbuffer[ARCMSR_FW_CFGVER_OFFSET]);    /*firm_cfg_version,  25,          */
        if(acb->firm_numbers_queue > ARCMSR_MAX_HBB_POSTQUEUE)
                acb->maxOutstanding = ARCMSR_MAX_HBB_POSTQUEUE - 1;
        else
                acb->maxOutstanding = acb->firm_numbers_queue - 1;
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_get_hbc_config(struct AdapterControlBlock *acb)
{
        char *acb_firm_model = acb->firm_model;
        char *acb_firm_version = acb->firm_version;
        char *acb_device_map = acb->device_map;
        size_t iop_firm_model = offsetof(struct HBC_MessageUnit,msgcode_rwbuffer[ARCMSR_FW_MODEL_OFFSET]);   /*firm_model,15,60-67*/
        size_t iop_firm_version = offsetof(struct HBC_MessageUnit,msgcode_rwbuffer[ARCMSR_FW_VERS_OFFSET]); /*firm_version,17,68-83*/
        size_t iop_device_map = offsetof(struct HBC_MessageUnit,msgcode_rwbuffer[ARCMSR_FW_DEVMAP_OFFSET]);
        int i;

        CHIP_REG_WRITE32(HBC_MessageUnit, 0, inbound_msgaddr0, ARCMSR_INBOUND_MESG0_GET_CONFIG);
        CHIP_REG_WRITE32(HBC_MessageUnit, 0, inbound_doorbell, ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE);
        if(!arcmsr_hbc_wait_msgint_ready(acb)) {
                kprintf("arcmsr%d: wait 'get adapter firmware miscellaneous data' timeout \n", acb->pci_unit);
        }
        i = 0;
        while(i < 8) {
                *acb_firm_model = bus_space_read_1(acb->btag[0], acb->bhandle[0], iop_firm_model+i);
                /* 8 bytes firm_model, 15, 60-67*/
                acb_firm_model++;
                i++;
        }
        i = 0;
        while(i < 16) {
                *acb_firm_version = bus_space_read_1(acb->btag[0], acb->bhandle[0], iop_firm_version+i);
                /* 16 bytes firm_version, 17, 68-83*/
                acb_firm_version++;
                i++;
        }
        i = 0;
        while(i < 16) {
                *acb_device_map = bus_space_read_1(acb->btag[0], acb->bhandle[0], iop_device_map+i);
                acb_device_map++;
                i++;
        }
        kprintf("Areca RAID adapter%d: %s F/W version %s \n", acb->pci_unit, acb->firm_model, acb->firm_version);
        acb->firm_request_len   = CHIP_REG_READ32(HBC_MessageUnit, 0, msgcode_rwbuffer[1]);     /*firm_request_len,   1, 04-07*/
        acb->firm_numbers_queue = CHIP_REG_READ32(HBC_MessageUnit, 0, msgcode_rwbuffer[2]);     /*firm_numbers_queue, 2, 08-11*/
        acb->firm_sdram_size    = CHIP_REG_READ32(HBC_MessageUnit, 0, msgcode_rwbuffer[3]);     /*firm_sdram_size,    3, 12-15*/
        acb->firm_ide_channels  = CHIP_REG_READ32(HBC_MessageUnit, 0, msgcode_rwbuffer[4]);     /*firm_ide_channels,  4, 16-19*/
        acb->firm_cfg_version   = CHIP_REG_READ32(HBC_MessageUnit, 0, msgcode_rwbuffer[ARCMSR_FW_CFGVER_OFFSET]);       /*firm_cfg_version,  25,          */
        if(acb->firm_numbers_queue > ARCMSR_MAX_OUTSTANDING_CMD)
                acb->maxOutstanding = ARCMSR_MAX_OUTSTANDING_CMD - 1;
        else
                acb->maxOutstanding = acb->firm_numbers_queue - 1;
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_get_hbd_config(struct AdapterControlBlock *acb)
{
        char *acb_firm_model = acb->firm_model;
        char *acb_firm_version = acb->firm_version;
        char *acb_device_map = acb->device_map;
        size_t iop_firm_model = offsetof(struct HBD_MessageUnit, msgcode_rwbuffer[ARCMSR_FW_MODEL_OFFSET]);   /*firm_model,15,60-67*/
        size_t iop_firm_version = offsetof(struct HBD_MessageUnit, msgcode_rwbuffer[ARCMSR_FW_VERS_OFFSET]); /*firm_version,17,68-83*/
        size_t iop_device_map = offsetof(struct HBD_MessageUnit, msgcode_rwbuffer[ARCMSR_FW_DEVMAP_OFFSET]);
        int i;

        if(CHIP_REG_READ32(HBD_MessageUnit, 0, outbound_doorbell) & ARCMSR_HBDMU_IOP2DRV_MESSAGE_CMD_DONE)
                CHIP_REG_WRITE32(HBD_MessageUnit, 0, outbound_doorbell, ARCMSR_HBDMU_IOP2DRV_MESSAGE_CMD_DONE_CLEAR);
        CHIP_REG_WRITE32(HBD_MessageUnit, 0, inbound_msgaddr0, ARCMSR_INBOUND_MESG0_GET_CONFIG);
        if(!arcmsr_hbd_wait_msgint_ready(acb)) {
                kprintf("arcmsr%d: wait 'get adapter firmware miscellaneous data' timeout \n", acb->pci_unit);
        }
        i = 0;
        while(i < 8) {
                *acb_firm_model = bus_space_read_1(acb->btag[0], acb->bhandle[0], iop_firm_model+i);
                /* 8 bytes firm_model, 15, 60-67*/
                acb_firm_model++;
                i++;
        }
        i = 0;
        while(i < 16) {
                *acb_firm_version = bus_space_read_1(acb->btag[0], acb->bhandle[0], iop_firm_version+i);
                /* 16 bytes firm_version, 17, 68-83*/
                acb_firm_version++;
                i++;
        }
        i = 0;
        while(i < 16) {
                *acb_device_map = bus_space_read_1(acb->btag[0], acb->bhandle[0], iop_device_map+i);
                acb_device_map++;
                i++;
        }
        kprintf("Areca RAID adapter%d: %s F/W version %s \n", acb->pci_unit, acb->firm_model, acb->firm_version);
        acb->firm_request_len   = CHIP_REG_READ32(HBD_MessageUnit, 0, msgcode_rwbuffer[1]);     /*firm_request_len,   1, 04-07*/
        acb->firm_numbers_queue = CHIP_REG_READ32(HBD_MessageUnit, 0, msgcode_rwbuffer[2]);     /*firm_numbers_queue, 2, 08-11*/
        acb->firm_sdram_size    = CHIP_REG_READ32(HBD_MessageUnit, 0, msgcode_rwbuffer[3]);     /*firm_sdram_size,    3, 12-15*/
        acb->firm_ide_channels  = CHIP_REG_READ32(HBD_MessageUnit, 0, msgcode_rwbuffer[4]);     /*firm_ide_channels,  4, 16-19*/
        acb->firm_cfg_version   = CHIP_REG_READ32(HBD_MessageUnit, 0, msgcode_rwbuffer[ARCMSR_FW_CFGVER_OFFSET]);       /*firm_cfg_version,  25,          */
        if(acb->firm_numbers_queue > ARCMSR_MAX_HBD_POSTQUEUE)
                acb->maxOutstanding = ARCMSR_MAX_HBD_POSTQUEUE - 1;
        else
                acb->maxOutstanding = acb->firm_numbers_queue - 1;
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_get_hbe_config(struct AdapterControlBlock *acb)
{
        char *acb_firm_model = acb->firm_model;
        char *acb_firm_version = acb->firm_version;
        char *acb_device_map = acb->device_map;
        size_t iop_firm_model = offsetof(struct HBE_MessageUnit,msgcode_rwbuffer[ARCMSR_FW_MODEL_OFFSET]);   /*firm_model,15,60-67*/
        size_t iop_firm_version = offsetof(struct HBE_MessageUnit,msgcode_rwbuffer[ARCMSR_FW_VERS_OFFSET]); /*firm_version,17,68-83*/
        size_t iop_device_map = offsetof(struct HBE_MessageUnit,msgcode_rwbuffer[ARCMSR_FW_DEVMAP_OFFSET]);
        int i;

        CHIP_REG_WRITE32(HBE_MessageUnit, 0, inbound_msgaddr0, ARCMSR_INBOUND_MESG0_GET_CONFIG);
        acb->out_doorbell ^= ARCMSR_HBEMU_DRV2IOP_MESSAGE_CMD_DONE;
        CHIP_REG_WRITE32(HBE_MessageUnit, 0, iobound_doorbell, acb->out_doorbell);
        if(!arcmsr_hbe_wait_msgint_ready(acb)) {
                kprintf("arcmsr%d: wait 'get adapter firmware miscellaneous data' timeout \n", acb->pci_unit);
        }

        i = 0;
        while(i < 8) {
                *acb_firm_model = bus_space_read_1(acb->btag[0], acb->bhandle[0], iop_firm_model+i);
                /* 8 bytes firm_model, 15, 60-67*/
                acb_firm_model++;
                i++;
        }
        i = 0;
        while(i < 16) {
                *acb_firm_version = bus_space_read_1(acb->btag[0], acb->bhandle[0], iop_firm_version+i);
                /* 16 bytes firm_version, 17, 68-83*/
                acb_firm_version++;
                i++;
        }
        i = 0;
        while(i < 16) {
                *acb_device_map = bus_space_read_1(acb->btag[0], acb->bhandle[0], iop_device_map+i);
                acb_device_map++;
                i++;
        }
        kprintf("Areca RAID adapter%d: %s F/W version %s \n", acb->pci_unit, acb->firm_model, acb->firm_version);
        acb->firm_request_len   = CHIP_REG_READ32(HBE_MessageUnit, 0, msgcode_rwbuffer[1]);     /*firm_request_len,   1, 04-07*/
        acb->firm_numbers_queue = CHIP_REG_READ32(HBE_MessageUnit, 0, msgcode_rwbuffer[2]);     /*firm_numbers_queue, 2, 08-11*/
        acb->firm_sdram_size    = CHIP_REG_READ32(HBE_MessageUnit, 0, msgcode_rwbuffer[3]);     /*firm_sdram_size,    3, 12-15*/
        acb->firm_ide_channels  = CHIP_REG_READ32(HBE_MessageUnit, 0, msgcode_rwbuffer[4]);     /*firm_ide_channels,  4, 16-19*/
        acb->firm_cfg_version   = CHIP_REG_READ32(HBE_MessageUnit, 0, msgcode_rwbuffer[ARCMSR_FW_CFGVER_OFFSET]);       /*firm_cfg_version,  25,          */
        if(acb->firm_numbers_queue > ARCMSR_MAX_OUTSTANDING_CMD)
                acb->maxOutstanding = ARCMSR_MAX_OUTSTANDING_CMD - 1;
        else
                acb->maxOutstanding = acb->firm_numbers_queue - 1;
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_get_firmware_spec(struct AdapterControlBlock *acb)
{
        switch (acb->adapter_type) {
        case ACB_ADAPTER_TYPE_A: {
                        arcmsr_get_hba_config(acb);
                }
                break;
        case ACB_ADAPTER_TYPE_B: {
                        arcmsr_get_hbb_config(acb);
                }
                break;
        case ACB_ADAPTER_TYPE_C: {
                        arcmsr_get_hbc_config(acb);
                }
                break;
        case ACB_ADAPTER_TYPE_D: {
                        arcmsr_get_hbd_config(acb);
                }
                break;
        case ACB_ADAPTER_TYPE_E: {
                        arcmsr_get_hbe_config(acb);
                }
                break;
        }
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_wait_firmware_ready( struct AdapterControlBlock *acb)
{
        int     timeout=0;

        switch (acb->adapter_type) {
        case ACB_ADAPTER_TYPE_A: {
                        while ((CHIP_REG_READ32(HBA_MessageUnit, 0, outbound_msgaddr1) & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0)
                        {
                                if (timeout++ > 2000) /* (2000*15)/1000 = 30 sec */
                                {
                                        kprintf( "arcmsr%d:timed out waiting for firmware \n", acb->pci_unit);
                                        return;
                                }
                                UDELAY(15000); /* wait 15 milli-seconds */
                        }
                }
                break;
        case ACB_ADAPTER_TYPE_B: {
                        struct HBB_MessageUnit *phbbmu = (struct HBB_MessageUnit *)acb->pmu;
                        while ((READ_CHIP_REG32(0, phbbmu->iop2drv_doorbell) & ARCMSR_MESSAGE_FIRMWARE_OK) == 0)
                        {
                                if (timeout++ > 2000) /* (2000*15)/1000 = 30 sec */
                                {
                                        kprintf( "arcmsr%d: timed out waiting for firmware \n", acb->pci_unit);
                                        return;
                                }
                                UDELAY(15000); /* wait 15 milli-seconds */
                        }
                        WRITE_CHIP_REG32(0, phbbmu->drv2iop_doorbell, ARCMSR_DRV2IOP_END_OF_INTERRUPT);
                }
                break;
        case ACB_ADAPTER_TYPE_C: {
                        while ((CHIP_REG_READ32(HBC_MessageUnit, 0, outbound_msgaddr1) & ARCMSR_HBCMU_MESSAGE_FIRMWARE_OK) == 0)
                        {
                                if (timeout++ > 2000) /* (2000*15)/1000 = 30 sec */
                                {
                                        kprintf( "arcmsr%d:timed out waiting for firmware ready\n", acb->pci_unit);
                                        return;
                                }
                                UDELAY(15000); /* wait 15 milli-seconds */
                        }
                }
                break;
        case ACB_ADAPTER_TYPE_D: {
                        while ((CHIP_REG_READ32(HBD_MessageUnit, 0, outbound_msgaddr1) & ARCMSR_HBDMU_MESSAGE_FIRMWARE_OK) == 0)
                        {
                                if (timeout++ > 2000) /* (2000*15)/1000 = 30 sec */
                                {
                                        kprintf( "arcmsr%d:timed out waiting for firmware ready\n", acb->pci_unit);
                                        return;
                                }
                                UDELAY(15000); /* wait 15 milli-seconds */
                        }
                }
                break;
        case ACB_ADAPTER_TYPE_E: {
                        while ((CHIP_REG_READ32(HBE_MessageUnit, 0, outbound_msgaddr1) & ARCMSR_HBEMU_MESSAGE_FIRMWARE_OK) == 0)
                        {
                                if (timeout++ > 4000) /* (4000*15)/1000 = 60 sec */
                                {
                                        kprintf( "arcmsr%d:timed out waiting for firmware ready\n", acb->pci_unit);
                                        return;
                                }
                                UDELAY(15000); /* wait 15 milli-seconds */
                        }
                }
                break;
        }
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_clear_doorbell_queue_buffer( struct AdapterControlBlock *acb)
{
        u_int32_t outbound_doorbell;

        switch (acb->adapter_type) {
        case ACB_ADAPTER_TYPE_A: {
                        /* empty doorbell Qbuffer if door bell ringed */
                        outbound_doorbell = CHIP_REG_READ32(HBA_MessageUnit, 0, outbound_doorbell);
                        CHIP_REG_WRITE32(HBA_MessageUnit, 0, outbound_doorbell, outbound_doorbell);     /*clear doorbell interrupt */
                        CHIP_REG_WRITE32(HBA_MessageUnit, 0, inbound_doorbell, ARCMSR_INBOUND_DRIVER_DATA_READ_OK);
                }
                break;
        case ACB_ADAPTER_TYPE_B: {
                        struct HBB_MessageUnit *phbbmu = (struct HBB_MessageUnit *)acb->pmu;
                        WRITE_CHIP_REG32(0, phbbmu->iop2drv_doorbell, ARCMSR_DOORBELL_INT_CLEAR_PATTERN);/*clear interrupt and message state*/
                        WRITE_CHIP_REG32(0, phbbmu->drv2iop_doorbell, ARCMSR_DRV2IOP_DATA_READ_OK);
                        /* let IOP know data has been read */
                }
                break;
        case ACB_ADAPTER_TYPE_C: {
                        /* empty doorbell Qbuffer if door bell ringed */
                        outbound_doorbell = CHIP_REG_READ32(HBC_MessageUnit, 0, outbound_doorbell);
                        CHIP_REG_WRITE32(HBC_MessageUnit, 0, outbound_doorbell_clear, outbound_doorbell);       /*clear doorbell interrupt */
                        CHIP_REG_WRITE32(HBC_MessageUnit, 0, inbound_doorbell, ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK);
                        CHIP_REG_READ32(HBC_MessageUnit, 0, outbound_doorbell_clear); /* Dummy read to force pci flush */
                        CHIP_REG_READ32(HBC_MessageUnit, 0, inbound_doorbell); /* Dummy read to force pci flush */
                }
                break;
        case ACB_ADAPTER_TYPE_D: {
                        /* empty doorbell Qbuffer if door bell ringed */
                        outbound_doorbell = CHIP_REG_READ32(HBD_MessageUnit, 0, outbound_doorbell);
                        CHIP_REG_WRITE32(HBD_MessageUnit, 0, outbound_doorbell, outbound_doorbell);     /*clear doorbell interrupt */
                        CHIP_REG_WRITE32(HBD_MessageUnit, 0, inbound_doorbell, ARCMSR_HBDMU_DRV2IOP_DATA_OUT_READ);
                }
                break;
        case ACB_ADAPTER_TYPE_E: {
                        /* empty doorbell Qbuffer if door bell ringed */
                        acb->in_doorbell = CHIP_REG_READ32(HBE_MessageUnit, 0, iobound_doorbell);
                        CHIP_REG_WRITE32(HBE_MessageUnit, 0, host_int_status, 0);       /*clear doorbell interrupt */
                        acb->out_doorbell ^= ARCMSR_HBEMU_DRV2IOP_DATA_READ_OK;
                        CHIP_REG_WRITE32(HBE_MessageUnit, 0, iobound_doorbell, acb->out_doorbell);
                }
                break;
        }
}
/*
************************************************************************
************************************************************************
*/
static u_int32_t arcmsr_iop_confirm(struct AdapterControlBlock *acb)
{
        unsigned long srb_phyaddr;
        u_int32_t srb_phyaddr_hi32;
        u_int32_t srb_phyaddr_lo32;

        /*
        ********************************************************************
        ** here we need to tell iop 331 our freesrb.HighPart
        ** if freesrb.HighPart is not zero
        ********************************************************************
        */
        srb_phyaddr = (unsigned long) acb->srb_phyaddr.phyaddr;
        srb_phyaddr_hi32 = acb->srb_phyaddr.B.phyadd_high;
        srb_phyaddr_lo32 = acb->srb_phyaddr.B.phyadd_low;
        switch (acb->adapter_type) {
        case ACB_ADAPTER_TYPE_A: {
                        if(srb_phyaddr_hi32 != 0) {
                                CHIP_REG_WRITE32(HBA_MessageUnit, 0, msgcode_rwbuffer[0], ARCMSR_SIGNATURE_SET_CONFIG);
                                CHIP_REG_WRITE32(HBA_MessageUnit, 0, msgcode_rwbuffer[1], srb_phyaddr_hi32);
                                CHIP_REG_WRITE32(HBA_MessageUnit, 0, inbound_msgaddr0, ARCMSR_INBOUND_MESG0_SET_CONFIG);
                                if(!arcmsr_hba_wait_msgint_ready(acb)) {
                                        kprintf( "arcmsr%d: 'set srb high part physical address' timeout \n", acb->pci_unit);
                                        return FALSE;
                                }
                        }
                }
                break;
                /*
                ***********************************************************************
                **    if adapter type B, set window of "post command Q"
                ***********************************************************************
                */
        case ACB_ADAPTER_TYPE_B: {
                        u_int32_t post_queue_phyaddr;
                        struct HBB_MessageUnit *phbbmu;

                        phbbmu = (struct HBB_MessageUnit *)acb->pmu;
                        phbbmu->postq_index = 0;
                        phbbmu->doneq_index = 0;
                        WRITE_CHIP_REG32(0, phbbmu->drv2iop_doorbell, ARCMSR_MESSAGE_SET_POST_WINDOW);
                        if(!arcmsr_hbb_wait_msgint_ready(acb)) {
                                kprintf( "arcmsr%d: 'set window of post command Q' timeout\n", acb->pci_unit);
                                return FALSE;
                        }
                        post_queue_phyaddr = srb_phyaddr + ARCMSR_SRBS_POOL_SIZE
                                                                + offsetof(struct HBB_MessageUnit, post_qbuffer);
                        CHIP_REG_WRITE32(HBB_RWBUFFER, 1, msgcode_rwbuffer[0], ARCMSR_SIGNATURE_SET_CONFIG); /* driver "set config" signature */
                        CHIP_REG_WRITE32(HBB_RWBUFFER, 1, msgcode_rwbuffer[1], srb_phyaddr_hi32); /* normal should be zero */
                        CHIP_REG_WRITE32(HBB_RWBUFFER, 1, msgcode_rwbuffer[2], post_queue_phyaddr); /* postQ size (256+8)*4 */
                        CHIP_REG_WRITE32(HBB_RWBUFFER, 1, msgcode_rwbuffer[3], post_queue_phyaddr+1056); /* doneQ size (256+8)*4 */
                        CHIP_REG_WRITE32(HBB_RWBUFFER, 1, msgcode_rwbuffer[4], 1056); /* srb maxQ size must be --> [(256+8)*4] */
                        WRITE_CHIP_REG32(0, phbbmu->drv2iop_doorbell, ARCMSR_MESSAGE_SET_CONFIG);
                        if(!arcmsr_hbb_wait_msgint_ready(acb)) {
                                kprintf( "arcmsr%d: 'set command Q window' timeout \n", acb->pci_unit);
                                return FALSE;
                        }
                        WRITE_CHIP_REG32(0, phbbmu->drv2iop_doorbell, ARCMSR_MESSAGE_START_DRIVER_MODE);
                        if(!arcmsr_hbb_wait_msgint_ready(acb)) {
                                kprintf( "arcmsr%d: 'start diver mode' timeout \n", acb->pci_unit);
                                return FALSE;
                        }
                }
                break;
        case ACB_ADAPTER_TYPE_C: {
                        if(srb_phyaddr_hi32 != 0) {
                                CHIP_REG_WRITE32(HBC_MessageUnit, 0, msgcode_rwbuffer[0], ARCMSR_SIGNATURE_SET_CONFIG);
                                CHIP_REG_WRITE32(HBC_MessageUnit, 0, msgcode_rwbuffer[1], srb_phyaddr_hi32);
                                CHIP_REG_WRITE32(HBC_MessageUnit, 0, inbound_msgaddr0, ARCMSR_INBOUND_MESG0_SET_CONFIG);
                                CHIP_REG_WRITE32(HBC_MessageUnit, 0, inbound_doorbell,ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE);
                                if(!arcmsr_hbc_wait_msgint_ready(acb)) {
                                        kprintf( "arcmsr%d: 'set srb high part physical address' timeout \n", acb->pci_unit);
                                        return FALSE;
                                }
                        }
                }
                break;
        case ACB_ADAPTER_TYPE_D: {
                        u_int32_t post_queue_phyaddr, done_queue_phyaddr;
                        struct HBD_MessageUnit0 *phbdmu;

                        phbdmu = (struct HBD_MessageUnit0 *)acb->pmu;
                        phbdmu->postq_index = 0;
                        phbdmu->doneq_index = 0x40FF;
                        post_queue_phyaddr = srb_phyaddr_lo32 + ARCMSR_SRBS_POOL_SIZE
                                                                + offsetof(struct HBD_MessageUnit0, post_qbuffer);
                        done_queue_phyaddr = srb_phyaddr_lo32 + ARCMSR_SRBS_POOL_SIZE
                                                                + offsetof(struct HBD_MessageUnit0, done_qbuffer);
                        CHIP_REG_WRITE32(HBD_MessageUnit, 0, msgcode_rwbuffer[0], ARCMSR_SIGNATURE_SET_CONFIG); /* driver "set config" signature */
                        CHIP_REG_WRITE32(HBD_MessageUnit, 0, msgcode_rwbuffer[1], srb_phyaddr_hi32);
                        CHIP_REG_WRITE32(HBD_MessageUnit, 0, msgcode_rwbuffer[2], post_queue_phyaddr); /* postQ base */
                        CHIP_REG_WRITE32(HBD_MessageUnit, 0, msgcode_rwbuffer[3], done_queue_phyaddr); /* doneQ base */
                        CHIP_REG_WRITE32(HBD_MessageUnit, 0, msgcode_rwbuffer[4], 0x100);
                        CHIP_REG_WRITE32(HBD_MessageUnit, 0, inbound_msgaddr0, ARCMSR_INBOUND_MESG0_SET_CONFIG);
                        if(!arcmsr_hbd_wait_msgint_ready(acb)) {
                                kprintf( "arcmsr%d: 'set srb high part physical address' timeout \n", acb->pci_unit);
                                return FALSE;
                        }
                }
                break;
        case ACB_ADAPTER_TYPE_E: {
                        u_int32_t cdb_phyaddr_lo32;
                        cdb_phyaddr_lo32 = srb_phyaddr_lo32 + offsetof(struct CommandControlBlock, arcmsr_cdb);
                        CHIP_REG_WRITE32(HBE_MessageUnit, 0, msgcode_rwbuffer[0], ARCMSR_SIGNATURE_SET_CONFIG);
                        CHIP_REG_WRITE32(HBE_MessageUnit, 0, msgcode_rwbuffer[1], ARCMSR_SIGNATURE_1884);
                        CHIP_REG_WRITE32(HBE_MessageUnit, 0, msgcode_rwbuffer[2], cdb_phyaddr_lo32);
                        CHIP_REG_WRITE32(HBE_MessageUnit, 0, msgcode_rwbuffer[3], srb_phyaddr_hi32);
                        CHIP_REG_WRITE32(HBE_MessageUnit, 0, msgcode_rwbuffer[4], SRB_SIZE);
                        cdb_phyaddr_lo32 = srb_phyaddr_lo32 + ARCMSR_SRBS_POOL_SIZE;
                        CHIP_REG_WRITE32(HBE_MessageUnit, 0, msgcode_rwbuffer[5], cdb_phyaddr_lo32);
                        CHIP_REG_WRITE32(HBE_MessageUnit, 0, msgcode_rwbuffer[6], srb_phyaddr_hi32);
                        CHIP_REG_WRITE32(HBE_MessageUnit, 0, msgcode_rwbuffer[7], COMPLETION_Q_POOL_SIZE);
                        CHIP_REG_WRITE32(HBE_MessageUnit, 0, inbound_msgaddr0, ARCMSR_INBOUND_MESG0_SET_CONFIG);
                        acb->out_doorbell ^= ARCMSR_HBEMU_DRV2IOP_MESSAGE_CMD_DONE;
                        CHIP_REG_WRITE32(HBE_MessageUnit, 0, iobound_doorbell, acb->out_doorbell);
                        if(!arcmsr_hbe_wait_msgint_ready(acb)) {
                                kprintf( "arcmsr%d: 'set srb high part physical address' timeout \n", acb->pci_unit);
                                return FALSE;
                        }
                }
                break;
        }
        return (TRUE);
}
/*
************************************************************************
************************************************************************
*/
static void arcmsr_enable_eoi_mode(struct AdapterControlBlock *acb)
{
        if (acb->adapter_type == ACB_ADAPTER_TYPE_B)
        {
                struct HBB_MessageUnit *phbbmu = (struct HBB_MessageUnit *)acb->pmu;
                WRITE_CHIP_REG32(0, phbbmu->drv2iop_doorbell, ARCMSR_MESSAGE_ACTIVE_EOI_MODE);
                if(!arcmsr_hbb_wait_msgint_ready(acb)) {
                        kprintf( "arcmsr%d: 'iop enable eoi mode' timeout \n", acb->pci_unit);
                        return;
                }
        }
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_iop_init(struct AdapterControlBlock *acb)
{
        u_int32_t intmask_org;

        /* disable all outbound interrupt */
        intmask_org = arcmsr_disable_allintr(acb);
        arcmsr_wait_firmware_ready(acb);
        arcmsr_iop_confirm(acb);
        arcmsr_get_firmware_spec(acb);
        /*start background rebuild*/
        arcmsr_start_adapter_bgrb(acb);
        /* empty doorbell Qbuffer if door bell ringed */
        arcmsr_clear_doorbell_queue_buffer(acb);
        arcmsr_enable_eoi_mode(acb);
        /* enable outbound Post Queue, outbound doorbell Interrupt */
        arcmsr_enable_allintr(acb, intmask_org);
        acb->acb_flags |= ACB_F_IOP_INITED;
}
/*
**********************************************************************
**********************************************************************
*/
static void arcmsr_map_free_srb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
{
        struct AdapterControlBlock *acb = arg;
        struct CommandControlBlock *srb_tmp;
        u_int32_t i;
        unsigned long srb_phyaddr = (unsigned long)segs->ds_addr;

        acb->srb_phyaddr.phyaddr = srb_phyaddr;
        srb_tmp = (struct CommandControlBlock *)acb->uncacheptr;
        for(i=0; i < ARCMSR_MAX_FREESRB_NUM; i++) {
                if(bus_dmamap_create(acb->dm_segs_dmat,
                         /*flags*/0, &srb_tmp->dm_segs_dmamap) != 0) {
                        acb->acb_flags |= ACB_F_MAPFREESRB_FAILD;
                        kprintf("arcmsr%d:"
                        " srb dmamap bus_dmamap_create error\n", acb->pci_unit);
                        return;
                }
                if((acb->adapter_type == ACB_ADAPTER_TYPE_C) || (acb->adapter_type == ACB_ADAPTER_TYPE_D)
                         || (acb->adapter_type == ACB_ADAPTER_TYPE_E))
                {
                        srb_tmp->cdb_phyaddr_low = srb_phyaddr;
                        srb_tmp->cdb_phyaddr_high = (u_int32_t)((srb_phyaddr >> 16) >> 16);
                }
                else
                        srb_tmp->cdb_phyaddr_low = srb_phyaddr >> 5;
                srb_tmp->acb = acb;
                srb_tmp->smid = i << 16;
                acb->srbworkingQ[i] = acb->psrb_pool[i] = srb_tmp;
                srb_phyaddr = srb_phyaddr + SRB_SIZE;
                srb_tmp = (struct CommandControlBlock *)((unsigned long)srb_tmp + SRB_SIZE);
        }
        acb->pCompletionQ = (pCompletion_Q)srb_tmp;
        acb->vir2phy_offset = (unsigned long)srb_tmp - (unsigned long)srb_phyaddr;
}
/*
************************************************************************
************************************************************************
*/
static void arcmsr_free_resource(struct AdapterControlBlock *acb)
{
        /* remove the control device */
        if(acb->ioctl_dev != NULL) {
                destroy_dev(acb->ioctl_dev);
        }
        bus_dmamap_unload(acb->srb_dmat, acb->srb_dmamap);
        bus_dmamap_destroy(acb->srb_dmat, acb->srb_dmamap);
        bus_dma_tag_destroy(acb->srb_dmat);
        bus_dma_tag_destroy(acb->dm_segs_dmat);
        bus_dma_tag_destroy(acb->parent_dmat);
}
/*
************************************************************************
************************************************************************
*/
static void arcmsr_mutex_init(struct AdapterControlBlock *acb)
{
        ARCMSR_LOCK_INIT(&acb->isr_lock, "arcmsr isr lock");
        ARCMSR_LOCK_INIT(&acb->srb_lock, "arcmsr srb lock");
        ARCMSR_LOCK_INIT(&acb->postDone_lock, "arcmsr postQ lock");
        ARCMSR_LOCK_INIT(&acb->qbuffer_lock, "arcmsr RW buffer lock");
        ARCMSR_LOCK_INIT(&acb->io_lock, "arcmsr io lock");
        ARCMSR_LOCK_INIT(&acb->sim_lock, "arcmsr sim lock");
}
/*
************************************************************************
************************************************************************
*/
static void arcmsr_mutex_destroy(struct AdapterControlBlock *acb)
{
        ARCMSR_LOCK_DESTROY(&acb->sim_lock);
        ARCMSR_LOCK_DESTROY(&acb->io_lock);
        ARCMSR_LOCK_DESTROY(&acb->qbuffer_lock);
        ARCMSR_LOCK_DESTROY(&acb->postDone_lock);
        ARCMSR_LOCK_DESTROY(&acb->srb_lock);
        ARCMSR_LOCK_DESTROY(&acb->isr_lock);
}
/*
************************************************************************
************************************************************************
*/
static u_int32_t arcmsr_initialize(device_t dev)
{
        struct AdapterControlBlock *acb = device_get_softc(dev);
        u_int16_t pci_command;
        int i, j,max_coherent_size;
        u_int32_t vendor_dev_id;

        vendor_dev_id = pci_get_devid(dev);
        acb->vendor_device_id = vendor_dev_id;
        acb->sub_device_id = pci_read_config(dev, PCIR_SUBDEV_0, 2);
        switch (vendor_dev_id) {
        case PCIDevVenIDARC1880:
        case PCIDevVenIDARC1882:
        case PCIDevVenIDARC1213:
        case PCIDevVenIDARC1223: {
                        acb->adapter_type = ACB_ADAPTER_TYPE_C;
                        if ((acb->sub_device_id == ARECA_SUB_DEV_ID_1883) ||
                            (acb->sub_device_id == ARECA_SUB_DEV_ID_1216) ||
                            (acb->sub_device_id == ARECA_SUB_DEV_ID_1226))
                                acb->adapter_bus_speed = ACB_BUS_SPEED_12G;
                        else
                                acb->adapter_bus_speed = ACB_BUS_SPEED_6G;
                        max_coherent_size = ARCMSR_SRBS_POOL_SIZE;
                }
                break;
        case PCIDevVenIDARC1884:
                acb->adapter_type = ACB_ADAPTER_TYPE_E;
                acb->adapter_bus_speed = ACB_BUS_SPEED_12G;
                max_coherent_size = ARCMSR_SRBS_POOL_SIZE + COMPLETION_Q_POOL_SIZE;
                acb->completionQ_entry = COMPLETION_Q_POOL_SIZE / sizeof(struct deliver_completeQ);
                break;
        case PCIDevVenIDARC1214: {
                        acb->adapter_type = ACB_ADAPTER_TYPE_D;
                        acb->adapter_bus_speed = ACB_BUS_SPEED_6G;
                        max_coherent_size = ARCMSR_SRBS_POOL_SIZE + (sizeof(struct HBD_MessageUnit0));
                }
                break;
        case PCIDevVenIDARC1200:
        case PCIDevVenIDARC1201: {
                        acb->adapter_type = ACB_ADAPTER_TYPE_B;
                        acb->adapter_bus_speed = ACB_BUS_SPEED_3G;
                        max_coherent_size = ARCMSR_SRBS_POOL_SIZE + (sizeof(struct HBB_MessageUnit));
                }
                break;
        case PCIDevVenIDARC1203: {
                        acb->adapter_type = ACB_ADAPTER_TYPE_B;
                        acb->adapter_bus_speed = ACB_BUS_SPEED_6G;
                        max_coherent_size = ARCMSR_SRBS_POOL_SIZE + (sizeof(struct HBB_MessageUnit));
                }
                break;
        case PCIDevVenIDARC1110:
        case PCIDevVenIDARC1120:
        case PCIDevVenIDARC1130:
        case PCIDevVenIDARC1160:
        case PCIDevVenIDARC1170:
        case PCIDevVenIDARC1210:
        case PCIDevVenIDARC1220:
        case PCIDevVenIDARC1230:
        case PCIDevVenIDARC1231:
        case PCIDevVenIDARC1260:
        case PCIDevVenIDARC1261:
        case PCIDevVenIDARC1270:
        case PCIDevVenIDARC1280:
        case PCIDevVenIDARC1212:
        case PCIDevVenIDARC1222:
        case PCIDevVenIDARC1380:
        case PCIDevVenIDARC1381:
        case PCIDevVenIDARC1680:
        case PCIDevVenIDARC1681: {
                        acb->adapter_type = ACB_ADAPTER_TYPE_A;
                        acb->adapter_bus_speed = ACB_BUS_SPEED_3G;
                        max_coherent_size = ARCMSR_SRBS_POOL_SIZE;
                }
                break;
        default: {
                        kprintf("arcmsr%d:"
                        " unknown RAID adapter type \n", device_get_unit(dev));
                        return ENOMEM;
                }
        }
        if(bus_dma_tag_create(  /*PCI parent*/          bus_get_dma_tag(dev),
                                /*alignemnt*/           1,
                                /*boundary*/            0,
                                /*lowaddr*/             BUS_SPACE_MAXADDR,
                                /*highaddr*/            BUS_SPACE_MAXADDR,
                                /*maxsize*/             BUS_SPACE_MAXSIZE_32BIT,
                                /*nsegments*/           BUS_SPACE_UNRESTRICTED,
                                /*maxsegsz*/            BUS_SPACE_MAXSIZE_32BIT,
                                /*flags*/               0,
                                                        &acb->parent_dmat) != 0)
        {
                kprintf("arcmsr%d: parent_dmat bus_dma_tag_create failure!\n", device_get_unit(dev));
                return ENOMEM;
        }
        /* Create a single tag describing a region large enough to hold all of the s/g lists we will need. */
        if(bus_dma_tag_create(  /*parent_dmat*/         acb->parent_dmat,
                                /*alignment*/           1,
                                /*boundary*/            0,
                                /*lowaddr*/             BUS_SPACE_MAXADDR,
                                /*highaddr*/            BUS_SPACE_MAXADDR,
                                /*maxsize*/             ARCMSR_MAX_SG_ENTRIES * PAGE_SIZE * ARCMSR_MAX_FREESRB_NUM,
                                /*nsegments*/           ARCMSR_MAX_SG_ENTRIES,
                                /*maxsegsz*/            BUS_SPACE_MAXSIZE_32BIT,
                                /*flags*/               0,
                                                        &acb->dm_segs_dmat) != 0)
        {
                bus_dma_tag_destroy(acb->parent_dmat);
                kprintf("arcmsr%d: dm_segs_dmat bus_dma_tag_create failure!\n", device_get_unit(dev));
                return ENOMEM;
        }

        /* DMA tag for our srb structures.... Allocate the freesrb memory */
        if(bus_dma_tag_create(  /*parent_dmat*/         acb->parent_dmat,
                                /*alignment*/           0x20,
                                /*boundary*/            0,
                                /*lowaddr*/             BUS_SPACE_MAXADDR_32BIT,
                                /*highaddr*/            BUS_SPACE_MAXADDR,
                                /*maxsize*/             max_coherent_size,
                                /*nsegments*/           1,
                                /*maxsegsz*/            BUS_SPACE_MAXSIZE_32BIT,
                                /*flags*/               0,
                                                        &acb->srb_dmat) != 0)
        {
                bus_dma_tag_destroy(acb->dm_segs_dmat);
                bus_dma_tag_destroy(acb->parent_dmat);
                kprintf("arcmsr%d: srb_dmat bus_dma_tag_create failure!\n", device_get_unit(dev));
                return ENXIO;
        }
        /* Allocation for our srbs */
        if(bus_dmamem_alloc(acb->srb_dmat, (void **)&acb->uncacheptr, BUS_DMA_WAITOK | BUS_DMA_COHERENT | BUS_DMA_ZERO, &acb->srb_dmamap) != 0) {
                bus_dma_tag_destroy(acb->srb_dmat);
                bus_dma_tag_destroy(acb->dm_segs_dmat);
                bus_dma_tag_destroy(acb->parent_dmat);
                kprintf("arcmsr%d: srb_dmat bus_dmamem_alloc failure!\n", device_get_unit(dev));
                return ENXIO;
        }
        /* And permanently map them */
        if(bus_dmamap_load(acb->srb_dmat, acb->srb_dmamap, acb->uncacheptr, max_coherent_size, arcmsr_map_free_srb, acb, /*flags*/0)) {
                bus_dma_tag_destroy(acb->srb_dmat);
                bus_dma_tag_destroy(acb->dm_segs_dmat);
                bus_dma_tag_destroy(acb->parent_dmat);
                kprintf("arcmsr%d: srb_dmat bus_dmamap_load failure!\n", device_get_unit(dev));
                return ENXIO;
        }
        pci_command = pci_read_config(dev, PCIR_COMMAND, 2);
        pci_command |= PCIM_CMD_BUSMASTEREN;
        pci_command |= PCIM_CMD_PERRESPEN;
        pci_command |= PCIM_CMD_MWRICEN;
        /* Enable Busmaster */
        pci_write_config(dev, PCIR_COMMAND, pci_command, 2);
        switch(acb->adapter_type) {
        case ACB_ADAPTER_TYPE_A: {
                u_int32_t rid0 = PCIR_BAR(0);
                vm_offset_t     mem_base0;

                acb->sys_res_arcmsr[0] = bus_alloc_resource_any(dev,SYS_RES_MEMORY, &rid0, RF_ACTIVE);
                if(acb->sys_res_arcmsr[0] == NULL) {
                        arcmsr_free_resource(acb);
                        kprintf("arcmsr%d: bus_alloc_resource failure!\n", device_get_unit(dev));
                        return ENOMEM;
                }
                if(rman_get_start(acb->sys_res_arcmsr[0]) <= 0) {
                        arcmsr_free_resource(acb);
                        kprintf("arcmsr%d: rman_get_start failure!\n", device_get_unit(dev));
                        return ENXIO;
                }
                mem_base0 = (vm_offset_t) rman_get_virtual(acb->sys_res_arcmsr[0]);
                if(mem_base0 == 0) {
                        arcmsr_free_resource(acb);
                        kprintf("arcmsr%d: rman_get_virtual failure!\n", device_get_unit(dev));
                        return ENXIO;
                }
                acb->btag[0] = rman_get_bustag(acb->sys_res_arcmsr[0]);
                acb->bhandle[0] = rman_get_bushandle(acb->sys_res_arcmsr[0]);
                acb->pmu = (struct MessageUnit_UNION *)mem_base0;
                acb->rid[0] = rid0;
                }
                break;
        case ACB_ADAPTER_TYPE_B: {
                struct HBB_MessageUnit *phbbmu;
                struct CommandControlBlock *freesrb;
                u_int32_t rid[]={ PCIR_BAR(0), PCIR_BAR(2) };
                vm_offset_t     mem_base[]={0,0};
                u_long  size;
                if (vendor_dev_id == PCIDevVenIDARC1203)
                        size = sizeof(struct HBB_DOORBELL_1203);
                else
                        size = sizeof(struct HBB_DOORBELL);
                for(i=0; i < 2; i++) {
                        acb->sys_res_arcmsr[i] = bus_alloc_resource_any(dev,SYS_RES_MEMORY, &rid[i], RF_ACTIVE);
                        if(acb->sys_res_arcmsr[i] == NULL) {
                                arcmsr_free_resource(acb);
                                kprintf("arcmsr%d: bus_alloc_resource %d failure!\n", device_get_unit(dev), i);
                                return ENOMEM;
                        }
                        if(rman_get_start(acb->sys_res_arcmsr[i]) <= 0) {
                                arcmsr_free_resource(acb);
                                kprintf("arcmsr%d: rman_get_start %d failure!\n", device_get_unit(dev), i);
                                return ENXIO;
                        }
                        mem_base[i] = (vm_offset_t) rman_get_virtual(acb->sys_res_arcmsr[i]);
                        if(mem_base[i] == 0) {
                                arcmsr_free_resource(acb);
                                kprintf("arcmsr%d: rman_get_virtual %d failure!\n", device_get_unit(dev), i);
                                return ENXIO;
                        }
                        acb->btag[i] = rman_get_bustag(acb->sys_res_arcmsr[i]);
                        acb->bhandle[i] = rman_get_bushandle(acb->sys_res_arcmsr[i]);
                }
                freesrb = (struct CommandControlBlock *)acb->uncacheptr;
                acb->pmu = (struct MessageUnit_UNION *)((unsigned long)freesrb+ARCMSR_SRBS_POOL_SIZE);
                phbbmu = (struct HBB_MessageUnit *)acb->pmu;
                phbbmu->hbb_doorbell = (struct HBB_DOORBELL *)mem_base[0];
                phbbmu->hbb_rwbuffer = (struct HBB_RWBUFFER *)mem_base[1];
                if (vendor_dev_id == PCIDevVenIDARC1203) {
                        phbbmu->drv2iop_doorbell = offsetof(struct HBB_DOORBELL_1203, drv2iop_doorbell);
                        phbbmu->drv2iop_doorbell_mask = offsetof(struct HBB_DOORBELL_1203, drv2iop_doorbell_mask);
                        phbbmu->iop2drv_doorbell = offsetof(struct HBB_DOORBELL_1203, iop2drv_doorbell);
                        phbbmu->iop2drv_doorbell_mask = offsetof(struct HBB_DOORBELL_1203, iop2drv_doorbell_mask);
                } else {
                        phbbmu->drv2iop_doorbell = offsetof(struct HBB_DOORBELL, drv2iop_doorbell);
                        phbbmu->drv2iop_doorbell_mask = offsetof(struct HBB_DOORBELL, drv2iop_doorbell_mask);
                        phbbmu->iop2drv_doorbell = offsetof(struct HBB_DOORBELL, iop2drv_doorbell);
                        phbbmu->iop2drv_doorbell_mask = offsetof(struct HBB_DOORBELL, iop2drv_doorbell_mask);
                }
                acb->rid[0] = rid[0];
                acb->rid[1] = rid[1];
                }
                break;
        case ACB_ADAPTER_TYPE_C: {
                u_int32_t rid0 = PCIR_BAR(1);
                vm_offset_t     mem_base0;

                acb->sys_res_arcmsr[0] = bus_alloc_resource_any(dev,SYS_RES_MEMORY, &rid0, RF_ACTIVE);
                if(acb->sys_res_arcmsr[0] == NULL) {
                        arcmsr_free_resource(acb);
                        kprintf("arcmsr%d: bus_alloc_resource failure!\n", device_get_unit(dev));
                        return ENOMEM;
                }
                if(rman_get_start(acb->sys_res_arcmsr[0]) <= 0) {
                        arcmsr_free_resource(acb);
                        kprintf("arcmsr%d: rman_get_start failure!\n", device_get_unit(dev));
                        return ENXIO;
                }
                mem_base0 = (vm_offset_t) rman_get_virtual(acb->sys_res_arcmsr[0]);
                if(mem_base0 == 0) {
                        arcmsr_free_resource(acb);
                        kprintf("arcmsr%d: rman_get_virtual failure!\n", device_get_unit(dev));
                        return ENXIO;
                }
                acb->btag[0] = rman_get_bustag(acb->sys_res_arcmsr[0]);
                acb->bhandle[0] = rman_get_bushandle(acb->sys_res_arcmsr[0]);
                acb->pmu = (struct MessageUnit_UNION *)mem_base0;
                acb->rid[0] = rid0;
                }
                break;
        case ACB_ADAPTER_TYPE_D: {
                struct HBD_MessageUnit0 *phbdmu;
                u_int32_t rid0 = PCIR_BAR(0);
                vm_offset_t     mem_base0;

                acb->sys_res_arcmsr[0] = bus_alloc_resource_any(dev,SYS_RES_MEMORY, &rid0, RF_ACTIVE);
                if(acb->sys_res_arcmsr[0] == NULL) {
                        arcmsr_free_resource(acb);
                        kprintf("arcmsr%d: bus_alloc_resource failure!\n", device_get_unit(dev));
                        return ENOMEM;
                }
                if(rman_get_start(acb->sys_res_arcmsr[0]) <= 0) {
                        arcmsr_free_resource(acb);
                        kprintf("arcmsr%d: rman_get_start failure!\n", device_get_unit(dev));
                        return ENXIO;
                }
                mem_base0 = (vm_offset_t) rman_get_virtual(acb->sys_res_arcmsr[0]);
                if(mem_base0 == 0) {
                        arcmsr_free_resource(acb);
                        kprintf("arcmsr%d: rman_get_virtual failure!\n", device_get_unit(dev));
                        return ENXIO;
                }
                acb->btag[0] = rman_get_bustag(acb->sys_res_arcmsr[0]);
                acb->bhandle[0] = rman_get_bushandle(acb->sys_res_arcmsr[0]);
                acb->pmu = (struct MessageUnit_UNION *)((unsigned long)acb->uncacheptr+ARCMSR_SRBS_POOL_SIZE);
                phbdmu = (struct HBD_MessageUnit0 *)acb->pmu;
                phbdmu->phbdmu = (struct HBD_MessageUnit *)mem_base0;
                acb->rid[0] = rid0;
                }
                break;
        case ACB_ADAPTER_TYPE_E: {
                u_int32_t rid0 = PCIR_BAR(1);
                vm_offset_t     mem_base0;

                acb->sys_res_arcmsr[0] = bus_alloc_resource(dev,SYS_RES_MEMORY, &rid0, 0ul, ~0ul, sizeof(struct HBE_MessageUnit), RF_ACTIVE);
                if(acb->sys_res_arcmsr[0] == NULL) {
                        arcmsr_free_resource(acb);
                        kprintf("arcmsr%d: bus_alloc_resource failure!\n", device_get_unit(dev));
                        return ENOMEM;
                }
                if(rman_get_start(acb->sys_res_arcmsr[0]) <= 0) {
                        arcmsr_free_resource(acb);
                        kprintf("arcmsr%d: rman_get_start failure!\n", device_get_unit(dev));
                        return ENXIO;
                }
                mem_base0 = (vm_offset_t) rman_get_virtual(acb->sys_res_arcmsr[0]);
                if(mem_base0 == 0) {
                        arcmsr_free_resource(acb);
                        kprintf("arcmsr%d: rman_get_virtual failure!\n", device_get_unit(dev));
                        return ENXIO;
                }
                acb->btag[0] = rman_get_bustag(acb->sys_res_arcmsr[0]);
                acb->bhandle[0] = rman_get_bushandle(acb->sys_res_arcmsr[0]);
                acb->pmu = (struct MessageUnit_UNION *)mem_base0;
                acb->doneq_index = 0;
                acb->in_doorbell = 0;
                acb->out_doorbell = 0;
                acb->rid[0] = rid0;
                CHIP_REG_WRITE32(HBE_MessageUnit, 0, host_int_status, 0); /*clear interrupt*/
                CHIP_REG_WRITE32(HBE_MessageUnit, 0, iobound_doorbell, ARCMSR_HBEMU_DOORBELL_SYNC); /* synchronize doorbell to 0 */
                }
                break;
        }
        if(acb->acb_flags & ACB_F_MAPFREESRB_FAILD) {
                arcmsr_free_resource(acb);
                kprintf("arcmsr%d: map free srb failure!\n", device_get_unit(dev));
                return ENXIO;
        }
        acb->acb_flags  |= (ACB_F_MESSAGE_WQBUFFER_CLEARED|ACB_F_MESSAGE_RQBUFFER_CLEARED|ACB_F_MESSAGE_WQBUFFER_READ);
        acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER;
        /*
        ********************************************************************
        ** init raid volume state
        ********************************************************************
        */
        for(i=0; i < ARCMSR_MAX_TARGETID; i++) {
                for(j=0; j < ARCMSR_MAX_TARGETLUN; j++) {
                        acb->devstate[i][j] = ARECA_RAID_GONE;
                }
        }
        arcmsr_iop_init(acb);
        return(0);
}

/*
************************************************************************
************************************************************************
*/
static void arcmsr_teardown_intr(device_t dev, struct AdapterControlBlock *acb)
{
        int i;

        if (acb->acb_flags & ACB_F_MSIX_ENABLED) {
                for (i = 0; i < acb->msix_vectors; i++) {
                        if (acb->ih[i])
                                bus_teardown_intr(dev, acb->irqres[i], acb->ih[i]);
                //      if (acb->irqres[i] != NULL)
                //              bus_release_resource(dev, SYS_RES_IRQ,
                //                  acb->irq_id[i], acb->irqres[i]);

                        acb->ih[i] = NULL;
                }
                pci_release_msi(dev);
        } else {
                if ((acb->ih[0] != NULL) && (acb->irqres[0] != NULL))
                        bus_teardown_intr(dev, acb->irqres[0], acb->ih[0]);
                if (acb->irqres[0] != NULL)
                        bus_release_resource(dev, SYS_RES_IRQ,
                            acb->irq_id[0], acb->irqres[0]);
                if (acb->irq_type == PCI_INTR_TYPE_MSI)
                        pci_release_msi(dev);
                acb->ih[0] = NULL;
                acb->irqres[0] = NULL;
                acb->irq_type = 0;
        }

}
/*
************************************************************************
************************************************************************
*/
static int arcmsr_attach(device_t dev)
{
        struct AdapterControlBlock *acb=(struct AdapterControlBlock *)device_get_softc(dev);
        u_int32_t unit=device_get_unit(dev);
        union ccb *ccb;
        struct cam_devq *devq;  /* Device Queue to use for this SIM */
        struct resource *irqres;
        u_int irq_flags;

        if(acb == NULL) {
                kprintf("arcmsr%d: cannot allocate softc\n", unit);
                return (ENOMEM);
        }
        arcmsr_mutex_init(acb);
        acb->pci_dev = dev;
        acb->pci_unit = unit;
        if(arcmsr_initialize(dev)) {
                kprintf("arcmsr%d: initialize failure!\n", unit);
                goto initialize_failed;
        }
        /* After setting up the adapter, map our interrupt */
        acb->irq_id[0] = 0;
        acb->irq_type = pci_alloc_1intr(dev, arcmsr_msi_enable, &acb->irq_id[0], &irq_flags);
        irqres = bus_alloc_resource_any(dev, SYS_RES_IRQ, &acb->irq_id[0], irq_flags);
        if(irqres == NULL ) {
                kprintf("arcmsr%d: unable to alloc interrupt resource!\n", unit);
                goto alloc_intr_failed;
        }
        if(bus_setup_intr(dev, irqres, INTR_MPSAFE, arcmsr_intr_handler, acb, &acb->ih[0], NULL)) {
                kprintf("arcmsr%d: unable to setup interrupt handler!\n", unit);
                goto setup_intr_failed;
        }
        acb->irqres[0] = irqres;
        /*
         * Now let the CAM generic SCSI layer find the SCSI devices on
         * the bus *  start queue to reset to the idle loop. *
         * Create device queue of SIM(s) *  (MAX_START_JOB - 1) :
         * max_sim_transactions
        */
        devq = cam_simq_alloc(acb->maxOutstanding);
        if(devq == NULL) {
                kprintf("arcmsr%d: cam_simq_alloc failure!\n", unit);
                goto simq_alloc_failed;
        }
        acb->psim = cam_sim_alloc(arcmsr_action, arcmsr_poll, "arcmsr", acb, unit, &acb->isr_lock, 1, ARCMSR_MAX_OUTSTANDING_CMD, devq);
        cam_simq_release(devq);
        if(acb->psim == NULL) {
                kprintf("arcmsr%d: cam_sim_alloc failure!\n", unit);
                goto sim_alloc_failed;
        }
        ARCMSR_LOCK_ACQUIRE(&acb->isr_lock);
        if(xpt_bus_register(acb->psim, 0) != CAM_SUCCESS) {
                kprintf("arcmsr%d: xpt_bus_register failure!\n", unit);
                goto xpt_bus_failed;
        }
        if ((ccb = xpt_alloc_ccb()) == NULL) {
                kprintf("arcmsr%d: xpt_alloc_ccb failure!\n", unit);
                goto xpt_ccb_failed;
        }
        if(xpt_create_path(&ccb->ccb_h.path, xpt_periph, cam_sim_path(acb->psim), CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
                kprintf("arcmsr%d: xpt_create_path failure!\n", unit);
                goto xpt_path_failed;
        }
        /*
        ****************************************************
        */
        xpt_setup_ccb(&ccb->ccb_h, ccb->ccb_h.path, /*priority*/5);
        ccb->ccb_h.func_code = XPT_SCAN_BUS;
        ccb->ccb_h.cbfcnp = arcmsr_rescanLun_cb;
        ccb->crcn.flags = CAM_FLAG_NONE;
        xpt_action(ccb);
        ARCMSR_LOCK_RELEASE(&acb->isr_lock);

        /* Create the control device.  */
        acb->ioctl_dev = make_dev(&arcmsr_ops, unit, UID_ROOT, GID_WHEEL /* GID_OPERATOR */, S_IRUSR | S_IWUSR, "arcmsr%d", unit);
        acb->ioctl_dev->si_drv1 = acb;
        (void)make_dev_alias(acb->ioctl_dev, "arc%d", unit);
        arcmsr_callout_init(&acb->devmap_callout);
        callout_reset(&acb->devmap_callout, 60 * hz, arcmsr_polling_devmap, acb);
        return (0);

xpt_path_failed:
        xpt_free_ccb(&ccb->ccb_h);
xpt_ccb_failed:
        xpt_bus_deregister(cam_sim_path(acb->psim));
xpt_bus_failed:
        ARCMSR_LOCK_RELEASE(&acb->isr_lock);
        cam_sim_free(acb->psim);
sim_alloc_failed:
        cam_simq_release(devq);
simq_alloc_failed:
        arcmsr_teardown_intr(dev, acb);
setup_intr_failed:
        arcmsr_free_resource(acb);
        bus_release_resource(dev, SYS_RES_IRQ, acb->irq_id[0], irqres);
alloc_intr_failed:
        if (acb->irq_type == PCI_INTR_TYPE_MSI)
                pci_release_msi(dev);
initialize_failed:
        arcmsr_mutex_destroy(acb);
        return ENXIO;
}

/*
************************************************************************
************************************************************************
*/
static int arcmsr_probe(device_t dev)
{
        u_int32_t id;
        u_int16_t sub_device_id;
        static char buf[256];
        char x_type[]={"unknown"};
        char *type;
        int raid6 = 1;

        if (pci_get_vendor(dev) != PCI_VENDOR_ID_ARECA) {
                return (ENXIO);
        }
        sub_device_id = pci_read_config(dev, PCIR_SUBDEV_0, 2);
        switch(id = pci_get_devid(dev)) {
        case PCIDevVenIDARC1110:
        case PCIDevVenIDARC1200:
        case PCIDevVenIDARC1201:
        case PCIDevVenIDARC1210:
                raid6 = 0;
                /*FALLTHRU*/
        case PCIDevVenIDARC1120:
        case PCIDevVenIDARC1130:
        case PCIDevVenIDARC1160:
        case PCIDevVenIDARC1170:
        case PCIDevVenIDARC1220:
        case PCIDevVenIDARC1230:
        case PCIDevVenIDARC1231:
        case PCIDevVenIDARC1260:
        case PCIDevVenIDARC1261:
        case PCIDevVenIDARC1270:
        case PCIDevVenIDARC1280:
                type = "SATA 3G";
                break;
        case PCIDevVenIDARC1212:
        case PCIDevVenIDARC1222:
        case PCIDevVenIDARC1380:
        case PCIDevVenIDARC1381:
        case PCIDevVenIDARC1680:
        case PCIDevVenIDARC1681:
                type = "SAS 3G";
                break;
        case PCIDevVenIDARC1880:
        case PCIDevVenIDARC1882:
        case PCIDevVenIDARC1213:
        case PCIDevVenIDARC1223:
                if ((sub_device_id == ARECA_SUB_DEV_ID_1883) ||
                    (sub_device_id == ARECA_SUB_DEV_ID_1216) ||
                    (sub_device_id == ARECA_SUB_DEV_ID_1226))
                        type = "SAS 12G";
                else
                        type = "SAS 6G";
                arcmsr_msi_enable = 0;
                break;
        case PCIDevVenIDARC1884:
                type = "SAS 12G";
                arcmsr_msi_enable = 0;
                break;
        case PCIDevVenIDARC1214:
                arcmsr_msi_enable = 0;
        case PCIDevVenIDARC1203:
                type = "SATA 6G";
                break;
        default:
                type = x_type;
                raid6 = 0;
                break;
        }
        if(type == x_type)
                return(ENXIO);
        ksprintf(buf, "Areca %s Host Adapter RAID Controller %s\n%s\n",
                type, raid6 ? "(RAID6 capable)" : "", ARCMSR_DRIVER_VERSION);
        device_set_desc_copy(dev, buf);
        return (BUS_PROBE_DEFAULT);
}
/*
************************************************************************
************************************************************************
*/
static int arcmsr_shutdown(device_t dev)
{
        u_int32_t  i;
        struct CommandControlBlock *srb;
        struct AdapterControlBlock *acb=(struct AdapterControlBlock *)device_get_softc(dev);

        /* stop adapter background rebuild */
        ARCMSR_LOCK_ACQUIRE(&acb->isr_lock);
        /* disable all outbound interrupt */
        arcmsr_disable_allintr(acb);
        arcmsr_stop_adapter_bgrb(acb);
        arcmsr_flush_adapter_cache(acb);
        /* abort all outstanding command */
        acb->acb_flags |= ACB_F_SCSISTOPADAPTER;
        acb->acb_flags &= ~ACB_F_IOP_INITED;
        if(acb->srboutstandingcount != 0) {
                /*clear and abort all outbound posted Q*/
                arcmsr_done4abort_postqueue(acb);
                /* talk to iop 331 outstanding command aborted*/
                arcmsr_abort_allcmd(acb);
                for(i=0; i < ARCMSR_MAX_FREESRB_NUM; i++) {
                        srb = acb->psrb_pool[i];
                        if(srb->srb_state == ARCMSR_SRB_START) {
                                srb->srb_state = ARCMSR_SRB_ABORTED;
                                srb->pccb->ccb_h.status |= CAM_REQ_ABORTED;
                                arcmsr_srb_complete(srb, 1);
                        }
                }
        }
        acb->srboutstandingcount = 0;
        acb->workingsrb_doneindex = 0;
        acb->workingsrb_startindex = 0;
        acb->pktRequestCount = 0;
        acb->pktReturnCount = 0;
        ARCMSR_LOCK_RELEASE(&acb->isr_lock);
        return (0);
}
/*
************************************************************************
************************************************************************
*/
static int arcmsr_detach(device_t dev)
{
        struct AdapterControlBlock *acb=(struct AdapterControlBlock *)device_get_softc(dev);
        int i;

        callout_stop(&acb->devmap_callout);
        arcmsr_teardown_intr(dev, acb);
        arcmsr_shutdown(dev);
        arcmsr_free_resource(acb);
        for(i=0; (i < 2) && (acb->sys_res_arcmsr[i]!=NULL); i++) {
                bus_release_resource(dev, SYS_RES_MEMORY, acb->rid[i], acb->sys_res_arcmsr[i]);
        }
        ARCMSR_LOCK_ACQUIRE(&acb->isr_lock);
        xpt_bus_deregister(cam_sim_path(acb->psim));
        cam_sim_free(acb->psim);
        ARCMSR_LOCK_RELEASE(&acb->isr_lock);
        arcmsr_mutex_destroy(acb);
        return (0);
}

#ifdef ARCMSR_DEBUG1
static void arcmsr_dump_data(struct AdapterControlBlock *acb)
{
        if((acb->pktRequestCount - acb->pktReturnCount) == 0)
                return;
        kprintf("Command Request Count   =0x%x\n",acb->pktRequestCount);
        kprintf("Command Return Count    =0x%x\n",acb->pktReturnCount);
        kprintf("Command (Req-Rtn) Count =0x%x\n",(acb->pktRequestCount - acb->pktReturnCount));
        kprintf("Queued Command Count    =0x%x\n",acb->srboutstandingcount);
}
#endif