C++ A_FAILED函數代碼示例

/* set HTC/Mbox operational parameters, this can only be called when the target is in the
 * BMI phase */
A_STATUS ar6000_set_htc_params(HIF_DEVICE *hifDevice,
                               A_UINT32    TargetType,
                               A_UINT32    MboxIsrYieldValue,
                               A_UINT8     HtcControlBuffers)
{
    A_STATUS status;
    A_UINT32 blocksizes[HTC_MAILBOX_NUM_MAX];

    do {
            /* get the block sizes */
        status = HIFConfigureDevice(hifDevice, HIF_DEVICE_GET_MBOX_BLOCK_SIZE,
                                    blocksizes, sizeof(blocksizes));

        if (A_FAILED(status)) {
            AR_DEBUG_PRINTF(ATH_LOG_ERR,("Failed to get block size info from HIF layer...\n"));
            break;
        }
            /* note: we actually get the block size for mailbox 1, for SDIO the block
             * size on mailbox 0 is artificially set to 1 */
            /* must be a power of 2 */
        A_ASSERT((blocksizes[1] & (blocksizes[1] - 1)) == 0);

        if (HtcControlBuffers != 0) {
                /* set override for number of control buffers to use */
            blocksizes[1] |=  ((A_UINT32)HtcControlBuffers) << 16;
        }

            /* set the host interest area for the block size */
        status = BMIWriteMemory(hifDevice,
                                HOST_INTEREST_ITEM_ADDRESS(TargetType, hi_mbox_io_block_sz),
                                (A_UCHAR *)&blocksizes[1],
                                4);

        if (A_FAILED(status)) {
            AR_DEBUG_PRINTF(ATH_LOG_ERR,("BMIWriteMemory for IO block size failed \n"));
            break;
        }

        AR_DEBUG_PRINTF(ATH_LOG_INF,("Block Size Set: %d (target address:0x%X)\n",
                blocksizes[1], HOST_INTEREST_ITEM_ADDRESS(TargetType, hi_mbox_io_block_sz)));

        if (MboxIsrYieldValue != 0) {
                /* set the host interest area for the mbox ISR yield limit */
            status = BMIWriteMemory(hifDevice,
                                    HOST_INTEREST_ITEM_ADDRESS(TargetType, hi_mbox_isr_yield_limit),
                                    (A_UCHAR *)&MboxIsrYieldValue,
                                    4);

            if (A_FAILED(status)) {
                AR_DEBUG_PRINTF(ATH_LOG_ERR,("BMIWriteMemory for yield limit failed \n"));
                break;
            }
        }

    } while (FALSE);

    return status;
}

A_STATUS
Abf_WlanIssueFrontEndConfig(ATHBT_FILTER_INFO * pInfo)
{
    WMI_SET_BTCOEX_FE_ANT_CMD btcoexFeAntCmd;
    WMI_SET_BTCOEX_COLOCATED_BT_DEV_CMD btcoexCoLocatedBtCmd;
    A_UINT32  buf_fe_ant_cmd[sizeof(A_UINT32) + sizeof(WMI_SET_BTCOEX_FE_ANT_CMD)];
    A_UINT32  buf_co_located_bt_cmd[sizeof(A_UINT32) + sizeof(WMI_SET_BTCOEX_COLOCATED_BT_DEV_CMD)];
    A_STATUS status;

    /* Set co-located bt type to 1, generic for any PTA based bluetooth */
    buf_co_located_bt_cmd[0] = AR6000_XIOCTL_WMI_SET_BTCOEX_COLOCATED_BT_DEV;

    if (pInfo->Flags & ABF_BT_CHIP_IS_QCOM) {
        btcoexCoLocatedBtCmd.btcoexCoLocatedBTdev = 2;
    } else {
        btcoexCoLocatedBtCmd.btcoexCoLocatedBTdev = 1;
    }

    A_MEMCPY(&buf_co_located_bt_cmd[1], (void *)&btcoexCoLocatedBtCmd,
             sizeof(WMI_SET_BTCOEX_COLOCATED_BT_DEV_CMD));

    status = Abf_WlanDispatchIO(pInfo, AR6000_IOCTL_EXTENDED,
                                (void *)buf_co_located_bt_cmd,
                                (sizeof(WMI_SET_BTCOEX_COLOCATED_BT_DEV_CMD) + sizeof(A_UINT32)));

    if (A_FAILED(status)) {
        A_ERR("[%s] Failed to issue Co-located BT configuration\n", __FUNCTION__);
        return A_ERROR;
    }

    if(pInfo->Flags & ABF_FE_ANT_IS_SA) {
        /* Indicate front end antenna configuration as single antenna  */
        A_INFO("FLAGS = %x, Issue FE antenna configuration as single \n", pInfo->Flags);
        btcoexFeAntCmd.btcoexFeAntType = WMI_BTCOEX_FE_ANT_SINGLE;
    }else {
        A_INFO("FLAGS = %x, Issue FE antenna configuration as dual \n", pInfo->Flags);
        btcoexFeAntCmd.btcoexFeAntType = WMI_BTCOEX_FE_ANT_DUAL;
    }

    buf_fe_ant_cmd[0] = AR6000_XIOCTL_WMI_SET_BTCOEX_FE_ANT;

    A_MEMCPY(&buf_fe_ant_cmd[1], (void *)&btcoexFeAntCmd, sizeof(WMI_SET_BTCOEX_FE_ANT_CMD));


    status = Abf_WlanDispatchIO(pInfo, AR6000_IOCTL_EXTENDED,
                                (void *)buf_fe_ant_cmd,
                                (sizeof(WMI_SET_BTCOEX_FE_ANT_CMD) + sizeof(A_UINT32)));

    if (A_FAILED(status)) {
        A_ERR("[%s] Failed to issue FE ant configuration\n", __FUNCTION__);
        return A_ERROR;
    }

    return A_OK;

}

A_STATUS DevSetupGMbox(AR6K_DEVICE *pDev)
{
    A_STATUS    status = A_OK;
    A_UINT8     muxControl[4];
    
    do {
        
        if (0 == pDev->MailBoxInfo.GMboxAddress) {
            break;    
        }
    
        AR_DEBUG_PRINTF(ATH_DEBUG_ANY,(" GMBOX Advertised: Address:0x%X , size:%d \n",
                    pDev->MailBoxInfo.GMboxAddress, pDev->MailBoxInfo.GMboxSize));
                    
        status = DevGMboxIRQAction(pDev, GMBOX_DISABLE_ALL, PROC_IO_SYNC);
        
        if (A_FAILED(status)) {
            break;    
        }
       
            /* write to mailbox look ahead mux control register, we want the
             * GMBOX lookaheads to appear on lookaheads 2 and 3 
             * the register is 1-byte wide so we need to hit it 4 times to align the operation 
             * to 4-bytes */            
        muxControl[0] = GMBOX_LA_MUX_OVERRIDE_2_3;
        muxControl[1] = GMBOX_LA_MUX_OVERRIDE_2_3;
        muxControl[2] = GMBOX_LA_MUX_OVERRIDE_2_3;
        muxControl[3] = GMBOX_LA_MUX_OVERRIDE_2_3;
                
        status = HIFReadWrite(pDev->HIFDevice,
                              GMBOX_LOOKAHEAD_MUX_REG,
                              muxControl,
                              sizeof(muxControl),
                              HIF_WR_SYNC_BYTE_FIX,  /* hit this register 4 times */
                              NULL);
        
        if (A_FAILED(status)) {
            break;    
        }
        
        status = GMboxProtocolInstall(pDev);
        
        if (A_FAILED(status)) {
            break;    
        }
        
        pDev->GMboxEnabled = TRUE;
        
    } while (FALSE);
    
    return status;
}

    /* function to set up virtual scatter support if HIF layer has not implemented the interface */
static A_STATUS DevSetupVirtualScatterSupport(AR6K_DEVICE *pDev)
{
    A_STATUS                     status = A_OK;
    int                          bufferSize, sgreqSize;
    int                          i;
    DEV_SCATTER_DMA_VIRTUAL_INFO *pVirtualInfo;
    HIF_SCATTER_REQ              *pReq;

    bufferSize = sizeof(DEV_SCATTER_DMA_VIRTUAL_INFO) +
                2 * (A_GET_CACHE_LINE_BYTES()) + AR6K_MAX_TRANSFER_SIZE_PER_SCATTER;

    sgreqSize = sizeof(HIF_SCATTER_REQ) +
                    (AR6K_SCATTER_ENTRIES_PER_REQ - 1) * (sizeof(HIF_SCATTER_ITEM));

    for (i = 0; i < AR6K_SCATTER_REQS; i++) {
            /* allocate the scatter request, buffer info and the actual virtual buffer itself */
        pReq = (HIF_SCATTER_REQ *)A_MALLOC(sgreqSize + bufferSize);

        if (NULL == pReq) {
            status = A_NO_MEMORY;
            break;
        }

        A_MEMZERO(pReq, sgreqSize);

            /* the virtual DMA starts after the scatter request struct */
        pVirtualInfo = (DEV_SCATTER_DMA_VIRTUAL_INFO *)((A_UINT8 *)pReq + sgreqSize);
        A_MEMZERO(pVirtualInfo, sizeof(DEV_SCATTER_DMA_VIRTUAL_INFO));

        pVirtualInfo->pVirtDmaBuffer = &pVirtualInfo->DataArea[0];
            /* align buffer to cache line in case host controller can actually DMA this */
        pVirtualInfo->pVirtDmaBuffer = A_ALIGN_TO_CACHE_LINE(pVirtualInfo->pVirtDmaBuffer);
            /* store the structure in the private area */
        pReq->HIFPrivate[0] = pVirtualInfo;
            /* we emulate a DMA bounce interface */
        pReq->ScatterMethod = HIF_SCATTER_DMA_BOUNCE;
        pReq->pScatterBounceBuffer = pVirtualInfo->pVirtDmaBuffer;
            /* free request to the list */
        DevFreeScatterReq((HIF_DEVICE *)pDev,pReq);
    }

    if (A_FAILED(status)) {
        DevCleanupVirtualScatterSupport(pDev);
    } else {
        pDev->HifScatterInfo.pAllocateReqFunc = DevAllocScatterReq;
        pDev->HifScatterInfo.pFreeReqFunc = DevFreeScatterReq;
        pDev->HifScatterInfo.pReadWriteScatterFunc = DevReadWriteScatter;
        if (pDev->MailBoxInfo.MboxBusIFType == MBOX_BUS_IF_SPI) {
            AR_DEBUG_PRINTF(ATH_DEBUG_WARN, ("AR6K: SPI bus requires RX scatter limits\n"));
            pDev->HifScatterInfo.MaxScatterEntries = AR6K_MIN_SCATTER_ENTRIES_PER_REQ;
            pDev->HifScatterInfo.MaxTransferSizePerScatterReq = AR6K_MIN_TRANSFER_SIZE_PER_SCATTER;
        } else {
            pDev->HifScatterInfo.MaxScatterEntries = AR6K_SCATTER_ENTRIES_PER_REQ;
            pDev->HifScatterInfo.MaxTransferSizePerScatterReq = AR6K_MAX_TRANSFER_SIZE_PER_SCATTER;
        }
        pDev->ScatterIsVirtual = TRUE;
    }

    return status;
}

A_STATUS HTCStart(HTC_HANDLE HTCHandle)
{
    adf_nbuf_t netbuf;
    A_STATUS   status = A_OK;
    HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle);
    HTC_SETUP_COMPLETE_MSG *SetupComp;

    AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("HTCStart Enter\n"));
    do {
         
        HTCConfigTargetHIFPipe(HTCHandle);

#ifdef HTC_HOST_CREDIT_DIST
        adf_os_assert(target->InitCredits != NULL);
        adf_os_assert(target->EpCreditDistributionListHead != NULL);
        adf_os_assert(target->EpCreditDistributionListHead->pNext != NULL);

        /* call init credits callback to do the distribution , 
         * NOTE: the first entry in the distribution list is ENDPOINT_0, so
         * we pass the start of the list after this one. */
        target->InitCredits(target->pCredDistContext, 
                            target->EpCreditDistributionListHead->pNext,
                            target->TargetCredits);

#if 1
        adf_os_timer_init(target->os_handle, &target->host_htc_credit_debug_timer, host_htc_credit_show, target);
        adf_os_timer_start(&target->host_htc_credit_debug_timer, 10000);
#endif
#endif

        /* allocate a buffer to send */
        //netbuf = adf_nbuf_alloc(anet, sizeof(HTC_SETUP_COMPLETE_MSG), HTC_HDR_LENGTH, 0);
        netbuf = adf_nbuf_alloc(50, HTC_HDR_LENGTH, 0);

        if (netbuf == ADF_NBUF_NULL) {
            status = A_NO_MEMORY;
            break;
        }

        /* assemble setup complete message */
        SetupComp = (HTC_SETUP_COMPLETE_MSG *)adf_nbuf_put_tail(netbuf, sizeof(HTC_SETUP_COMPLETE_MSG));
        SetupComp->MessageID = adf_os_htons(HTC_MSG_SETUP_COMPLETE_ID);

        /* assemble the HTC header and send to HIF layer */
        status = HTCIssueSend(target, 
                              ADF_NBUF_NULL, 
                              netbuf, 
                              0, 
                              sizeof(HTC_SETUP_COMPLETE_MSG),
                              ENDPOINT0);
        
        if (A_FAILED(status)) {
            break;    
        }

    } while (FALSE);

    AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("HTCStart Exit\n"));
    return status;
}

/* APIs exported to other modules */
A_STATUS
Abf_WlanStackNotificationInit(ATH_BT_FILTER_INSTANCE *pInstance, A_UINT32 flags)
{
    A_STATUS status;
    ATHBT_FILTER_INFO *pInfo;
    ABF_WLAN_INFO *pAbfWlanInfo;

    pInfo = (ATHBT_FILTER_INFO *)pInstance->pContext;
    if (pInfo->pWlanInfo) {
        return A_OK;
    }

    pAbfWlanInfo = (ABF_WLAN_INFO *)A_MALLOC(sizeof(ABF_WLAN_INFO));
    A_MEMZERO(pAbfWlanInfo,sizeof(ABF_WLAN_INFO));

    A_MUTEX_INIT(&pAbfWlanInfo->hWaitEventLock);
    A_COND_INIT(&pAbfWlanInfo->hWaitEvent);
    A_MEMZERO(pAbfWlanInfo, sizeof(ABF_WLAN_INFO));
    pAbfWlanInfo->pInfo = pInfo;
    pAbfWlanInfo->Loop = TRUE;
    pInfo->pWlanInfo = pAbfWlanInfo;

    /* Spawn a thread which will be used to process events from WLAN */
    status = A_TASK_CREATE(&pInfo->hWlanThread, WlanEventThread, pAbfWlanInfo);
    if (A_FAILED(status)) {
        A_ERR("[%s] Failed to spawn a WLAN thread\n", __FUNCTION__);
        return A_ERROR;
    }

    A_INFO("WLAN Stack Notification init complete\n");

    return A_OK;
}

void DumpAR6KDevState(AR6K_DEVICE *pDev)
{
    A_STATUS                    status;
    AR6K_IRQ_ENABLE_REGISTERS   regs;
    AR6K_IRQ_PROC_REGISTERS     procRegs;

    LOCK_AR6K(pDev);
        /* copy into our temp area */
    A_MEMCPY(&regs,&pDev->IrqEnableRegisters,AR6K_IRQ_ENABLE_REGS_SIZE);
    UNLOCK_AR6K(pDev);
    
        /* load the register table from the device */
    status = HIFReadWrite(pDev->HIFDevice,
                          HOST_INT_STATUS_ADDRESS,
                          (A_UINT8 *)&procRegs,
                          AR6K_IRQ_PROC_REGS_SIZE,
                          HIF_RD_SYNC_BYTE_INC,
                          NULL);

    if (A_FAILED(status)) {
        AR_DEBUG_PRINTF(ATH_DEBUG_ERR,
            ("DumpAR6KDevState : Failed to read register table (%d) \n",status));
        return;
    }
            
    DevDumpRegisters(pDev,&procRegs,&regs);
    
    if (pDev->GMboxInfo.pStateDumpCallback != NULL) {
        pDev->GMboxInfo.pStateDumpCallback(pDev->GMboxInfo.pProtocolContext);        
    }
    
        /* dump any bus state at the HIF layer */
    HIFConfigureDevice(pDev->HIFDevice,HIF_DEVICE_DEBUG_BUS_STATE,NULL,0);
            
}

/* registered target arrival callback from the HIF layer */
HTC_HANDLE HTCCreate(void *hHIF, HTC_INIT_INFO *pInfo)
{
    A_STATUS    status = A_OK;
    HTC_TARGET  *target = NULL;
    
    do {
        
        if ((target = (HTC_TARGET *)A_MALLOC(sizeof(HTC_TARGET))) == NULL) {
            AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("HTC : Unable to allocate memory\n"));
            status = A_ERROR;
            break;
        }    
        
        A_MEMCPY(&target->HTCInitInfo,pInfo,sizeof(HTC_INIT_INFO));


        adf_os_mem_zero(target, sizeof(HTC_TARGET));

        adf_os_spinlock_init(&target->HTCLock);
        adf_os_spinlock_init(&target->HTCRxLock);
        adf_os_spinlock_init(&target->HTCTxLock);

        /* setup HIF layer callbacks */
        adf_os_mem_zero(&htcCallbacks, sizeof(completion_callbacks_t));
        htcCallbacks.Context = target;
        htcCallbacks.rxCompletionHandler = HTCRxCompletionHandler;
        htcCallbacks.txCompletionHandler = HTCTxCompletionHandler;

        HIFPostInit(hHIF, target, &htcCallbacks);
        
        target->hif_dev = hHIF;

        adf_os_init_mutex(&target->htc_rdy_mutex);
        adf_os_mutex_acquire(&target->htc_rdy_mutex);

        /* Get HIF default pipe for HTC message exchange */
        pEndpoint = &target->EndPoint[ENDPOINT0];
        HIFGetDefaultPipe(hHIF, &pEndpoint->UL_PipeID, &pEndpoint->DL_PipeID);
        adf_os_print("[Default Pipe]UL: %x, DL: %x\n", pEndpoint->UL_PipeID, pEndpoint->DL_PipeID);


        
        /* TODO : other init */
        
    } while (FALSE);


    target->host_handle = htcInfo.pContext;
   /* TODO INTEGRATION supply from host os handle for any os specific calls*/

    target->os_handle = NULL;

    if (A_FAILED(status)) {
        HTCCleanup(target); 
        target = NULL;
    }
    
    return (HTC_HANDLE)target;
}

A_STATUS
ar6002_REV1_reset_force_host (HIF_DEVICE *hifDevice)
{
    A_INT32 i;
    struct forceROM_s {
        A_UINT32 addr;
        A_UINT32 data;
    };
    struct forceROM_s *ForceROM;
    A_INT32 szForceROM;
    A_STATUS status = A_OK;
    A_UINT32 address;
    A_UINT32 data;

    static struct forceROM_s ForceROM_NEW[] = {
        {0x52df80, 0x20f31c07},
        {0x52df84, 0x92374420},
        {0x52df88, 0x1d120c03},
        {0x52df8c, 0xff8216f0},
        {0x52df90, 0xf01d120c},
        {0x52df94, 0x81004136},
        {0x52df98, 0xbc9100bd},
        {0x52df9c, 0x00bba100},

        {0x00008000|MC_TCAM_TARGET_ADDRESS, 0x0012dfe0}, /* Use remap entry 0 */
        {0x00008000|MC_TCAM_COMPARE_ADDRESS, 0x000e2380},
        {0x00008000|MC_TCAM_MASK_ADDRESS, 0x00000000},
        {0x00008000|MC_TCAM_VALID_ADDRESS, 0x00000001},

        {0x00018000|(LOCAL_COUNT_ADDRESS+0x10), 0}, /* clear BMI credit counter */

        {0x00004000|AR6002_RESET_CONTROL_ADDRESS, RESET_CONTROL_WARM_RST_MASK},
    };

    address = 0x004ed4b0; /* REV1 target software ID is stored here */
    status = ar6000_ReadRegDiag(hifDevice, &address, &data);
    if (A_FAILED(status) || (data != AR6002_VERSION_REV1)) {
        return A_ERROR; /* Not AR6002 REV1 */
    }

    ForceROM = ForceROM_NEW;
    szForceROM = sizeof(ForceROM_NEW)/sizeof(*ForceROM);

    ATH_DEBUG_PRINTF (DBG_MISC_DRV, ATH_DEBUG_TRC, ("Force Target to recognize Host....\n"));
    for (i = 0; i < szForceROM; i++)
    {
        if (ar6000_WriteRegDiag(hifDevice,
                                &ForceROM[i].addr,
                                &ForceROM[i].data) != A_OK)
        {
            ATH_DEBUG_PRINTF (DBG_MISC_DRV, ATH_DEBUG_TRC, ("Cannot force Target to recognize Host!\n"));
            return A_ERROR;
        }
    }

    A_MDELAY(1000);

    return A_OK;
}

A_STATUS HTCStart(HTC_HANDLE HTCHandle)
{
    adf_nbuf_t                 netbuf;
    A_STATUS                   status = A_OK;
    HTC_TARGET                 *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle);
    HTC_SETUP_COMPLETE_EX_MSG  *pSetupComp;
    HTC_PACKET                 *pSendPacket;

    AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("HTCStart Enter\n"));

    do {

        HTCConfigTargetHIFPipe(target);

            /* allocate a buffer to send */
        pSendPacket = HTCAllocControlTxPacket(target);
        if (NULL == pSendPacket) {
            AR_DEBUG_ASSERT(FALSE);
	        adf_os_print("%s: allocControlTxPacket failed\n",__func__);
            status = A_NO_MEMORY;
            break;
        }

        netbuf = (adf_nbuf_t)GET_HTC_PACKET_NET_BUF_CONTEXT(pSendPacket);
            /* assemble setup complete message */
        adf_nbuf_put_tail(netbuf, sizeof(HTC_SETUP_COMPLETE_EX_MSG));
        pSetupComp = (HTC_SETUP_COMPLETE_EX_MSG *) adf_nbuf_data(netbuf);
        A_MEMZERO(pSetupComp,sizeof(HTC_SETUP_COMPLETE_EX_MSG));

        HTC_SET_FIELD(pSetupComp, HTC_SETUP_COMPLETE_EX_MSG,
                    MESSAGEID, HTC_MSG_SETUP_COMPLETE_EX_ID);

        //if (!htc_credit_flow) {
        if (0) {
            AR_DEBUG_PRINTF(ATH_DEBUG_INIT, ("HTC will not use TX credit flow control\n"));
            pSetupComp->SetupFlags |= HTC_SETUP_COMPLETE_FLAGS_DISABLE_TX_CREDIT_FLOW;
        } else {
            AR_DEBUG_PRINTF(ATH_DEBUG_INIT, ("HTC using TX credit flow control\n"));
        }

        SET_HTC_PACKET_INFO_TX(pSendPacket,
                               NULL,
                               (A_UINT8 *)pSetupComp,
                               sizeof(HTC_SETUP_COMPLETE_EX_MSG),
                               ENDPOINT_0,
                               HTC_SERVICE_TX_PACKET_TAG);

        status = HTCSendPkt((HTC_HANDLE)target,pSendPacket);
        if (A_FAILED(status)) {
            break;
        }

    } while (FALSE);

    AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("HTCStart Exit\n"));
    return status;
}

    /* setup scatter DMA resources for each scatter request */
static A_STATUS SetupScatterResource(HIF_DEVICE *device, HIF_SCATTER_REQ *pReq)
{
    A_STATUS status = A_OK;
    void     *pDMAInfo = NULL;
      
    switch (device->ScatterMethod) {
        case HIF_SCATTER_DMA_REAL :
                /* just allocate memory for the scatter list */
            pDMAInfo = A_MALLOC(sizeof(HIF_SCATTER_DMA_REAL_INFO));
            if (NULL == pDMAInfo) {
                status = A_NO_MEMORY;
                break;
            }           
            
            A_MEMZERO(pDMAInfo, sizeof(HIF_SCATTER_DMA_REAL_INFO));           
            pReq->ScatterMethod = HIF_SCATTER_DMA_REAL;
            
            break;
        case HIF_SCATTER_DMA_BOUNCE :               
            {
                HIF_SCATTER_DMA_BOUNCE_INFO *pBounceInfo;    
                
                    /* allocate the management structure */
                pBounceInfo = (HIF_SCATTER_DMA_BOUNCE_INFO *)A_MALLOC(sizeof(HIF_SCATTER_DMA_BOUNCE_INFO));
                if (NULL == pBounceInfo) {
                    status = A_NO_MEMORY;
                    break;    
                }
                
                A_MEMZERO(pBounceInfo, sizeof(HIF_SCATTER_DMA_BOUNCE_INFO));
               
                    /* allocate a bounce buffer for the request */ 
                status = AllocateDMABounceBuffer(device, pBounceInfo);                 
                if (A_FAILED(status)) {
                    A_FREE(pBounceInfo);
                    break;
                }    
                                 
                pDMAInfo = pBounceInfo;
                pReq->ScatterMethod = HIF_SCATTER_DMA_BOUNCE;
                pReq->pScatterBounceBuffer = pBounceInfo->pBounceBuffer + 
                                                        pBounceInfo->AlignmentOffset;     
            }
            break;
        default:
            break;  
    }
    
    if (pDMAInfo != NULL) {
        SET_DMA_INFO_SR(pReq,pDMAInfo);    
    }
    
    return status;
}

A_STATUS ConfigPipeCredits(HTC_TARGET *target, a_uint8_t pipeID, a_uint8_t credits)
{
    A_STATUS status = A_OK;
    adf_nbuf_t netbuf;
    HTC_CONFIG_PIPE_MSG *CfgPipeCdt;


    do {
        /* allocate a buffer to send */
        //netbuf = adf_nbuf_alloc(anet, sizeof(HTC_CONFIG_PIPE_MSG), HTC_HDR_LENGTH, 0);
        netbuf = adf_nbuf_alloc(50, HTC_HDR_LENGTH, 0);

        if (netbuf == ADF_NBUF_NULL) {
            status = A_NO_MEMORY;
            break;
        }

        /* assemble config pipe message */
        CfgPipeCdt = (HTC_CONFIG_PIPE_MSG *)adf_nbuf_put_tail(netbuf, sizeof(HTC_CONFIG_PIPE_MSG));
        CfgPipeCdt->MessageID = adf_os_htons(HTC_MSG_CONFIG_PIPE_ID);
        CfgPipeCdt->PipeID = pipeID;
        CfgPipeCdt->CreditCount = credits;

        /* assemble the HTC header and send to HIF layer */
        
#ifndef MAGPIE_SINGLE_CPU_CASE
        htc_spin_prep(&target->spin);
#endif
        status = HTCIssueSend(target, 
                              ADF_NBUF_NULL,
                              netbuf, 
                              0, 
                              sizeof(HTC_CONFIG_PIPE_MSG),
                              ENDPOINT0);
        
        if (A_FAILED(status)) {
            break;    
        }
        
        htc_spin( &target->spin );
        
        if (target->cfg_pipe_rsp_stat == HTC_CONFIGPIPE_SUCCESS) {
            status = A_OK;
        }
        else {
            status = A_ERROR;
        }

    } while(FALSE);

    return status;
    
}

A_STATUS
BMIFastDownload(HIF_DEVICE *device, A_UINT32 address, A_UCHAR *buffer, A_UINT32 length)
{
    A_STATUS status = A_ERROR;
    A_UINT32  lastWord = 0;
    A_UINT32  lastWordOffset = length & ~0x3;
    A_UINT32  unalignedBytes = length & 0x3;

    status = BMILZStreamStart (device, address);
    if (A_FAILED(status)) {
            return A_ERROR;
    }

    if (unalignedBytes) {
            /* copy the last word into a zero padded buffer */
        A_MEMCPY(&lastWord, &buffer[lastWordOffset], unalignedBytes);
    }

    status = BMILZData(device, buffer, lastWordOffset);

    if (A_FAILED(status)) {
        return A_ERROR;
    }

    if (unalignedBytes) {
        status = BMILZData(device, (A_UINT8 *)&lastWord, 4);
    }

    if (A_SUCCESS(status)) {
        //
        // Close compressed stream and open a new (fake) one.  This serves mainly to flush Target caches.
        //
        status = BMILZStreamStart (device, 0x00);
        if (A_FAILED(status)) {
           return A_ERROR;
        }
    }
	return status;
}

A_STATUS HTCIssueSend(HTC_TARGET *target, 
                      adf_nbuf_t hdr_buf,
                      adf_nbuf_t netbuf, 
                      a_uint8_t SendFlags, 
                      a_uint16_t len, 
                      a_uint8_t EpID)
{
    a_uint8_t pipeID;
    A_STATUS status = A_OK;
    //adf_net_handle_t anet = target->pInstanceContext;
    HTC_ENDPOINT *pEndpoint = &target->EndPoint[EpID];
    HTC_FRAME_HDR *HtcHdr;
    adf_nbuf_t tmp_nbuf;
    //printk("bharath %s \n",__FUNCTION__);
    if (hdr_buf == ADF_NBUF_NULL) {
        /* HTC header needs to be added on the data nbuf */
        tmp_nbuf = netbuf;
    }
    else {
        tmp_nbuf = hdr_buf;
    }

    /* setup HTC frame header */
    HtcHdr = (HTC_FRAME_HDR *)adf_nbuf_push_head(tmp_nbuf, sizeof(HTC_FRAME_HDR));
    adf_os_assert(HtcHdr);
    if ( HtcHdr == NULL ) {
        adf_os_print("%s_%d: HTC Header is NULL !!!\n", __FUNCTION__, __LINE__);
        return A_ERROR;
    }

    HtcHdr->EndpointID = EpID;
    HtcHdr->Flags = SendFlags;
    HtcHdr->PayloadLen = adf_os_htons(len);
    
    HTC_ADD_CREDIT_SEQNO(target,pEndpoint,len,HtcHdr);
   /* lookup the pipe id by the endpoint id */
    pipeID = pEndpoint->UL_PipeID;

//    if (EpID == ENDPOINT0) {
        /* send the buffer to the HIF layer */
        status = HIFSend(target->hif_dev/*anet*/, pipeID, hdr_buf, netbuf);
//    }

#ifdef NBUF_PREALLOC_POOL
    if ( A_FAILED(status) ) {
        adf_nbuf_pull_head(netbuf, HTC_HDR_LENGTH);
    }
#endif

    return status;
}

/* callback when our fetch to enable/disable completes */
static void DevGMboxIRQActionAsyncHandler(void *Context, HTC_PACKET *pPacket)
{
    AR6K_DEVICE *pDev = (AR6K_DEVICE *)Context;

    AR_DEBUG_PRINTF(ATH_DEBUG_IRQ,("+DevGMboxIRQActionAsyncHandler: (dev: 0x%X)\n", (A_UINT32)pDev));

    if (A_FAILED(pPacket->Status)) {
        AR_DEBUG_PRINTF(ATH_DEBUG_ERR,
                ("IRQAction Operation (%d) failed! status:%d \n", pPacket->PktInfo.AsRx.HTCRxFlags,pPacket->Status));
    }
        /* free this IO packet */
    AR6KFreeIOPacket(pDev,pPacket);
    AR_DEBUG_PRINTF(ATH_DEBUG_IRQ,("-DevGMboxIRQActionAsyncHandler \n"));
}