rtusb_bulk.c

经过修改的在uClinux2.6上正常运行的ralink rt2571芯片组的设备驱动程序.

	status = pUrb->status;
	atomic_set(&pRxContext->IrpLock, IRPLOCK_COMPLETED);
	atomic_dec(&pAd->PendingRx);
	
	switch (status)
	{
		case 0:
			 if ((status == USB_ST_NOERROR) && (atomic_read(&pRxContext->IrpLock) != IRPLOCK_CANCE_START))
			{
				//RTUSBRxPacket(pUrb);
				pAd->rx_bh.data = (unsigned long)pUrb;
				tasklet_schedule(&pAd->rx_bh);
				break;
				
			}// STATUS_SUCCESS
			DBGPRINT(RT_DEBUG_INFO,"==> RTUSBBulkRxComplete  (IrpLock) = %d\n", atomic_read(&pRxContext->IrpLock));
			break;
		
		case -ECONNRESET:		// async unlink
		case -ESHUTDOWN:		// hardware gone = -108
			pUrb = NULL;
			DBGPRINT(RT_DEBUG_ERROR,"==> RTUSBBulkRxComplete Error code = %d\n", status);
			//tasklet_schedule(&pAd->rx_bh);
			break;

	}
#if 0
	 if ((status == USB_ST_NOERROR) && (atomic_read(&pRxContext->IrpLock) != IRPLOCK_CANCE_START))
	{
		RTUSBRxPacket(pUrb);
		//tasklet_schedule(&pAd->rx_bh);
		
	}// STATUS_SUCCESS
	else
	{
		DBGPRINT(RT_DEBUG_TEMP,"==> RTUSBBulkRxComplete Error code = %d\n", status);
		pRxContext->InUse = FALSE;

		if ((!RTMP_TEST_FLAG(pAd, fRTMP_ADAPTER_RESET_IN_PROGRESS)) &&
			(!RTMP_TEST_FLAG(pAd, fRTMP_ADAPTER_BULKIN_RESET)) &&
			(!RTMP_TEST_FLAG(pAd, fRTMP_ADAPTER_HALT_IN_PROGRESS)) &&
			(!RTMP_TEST_FLAG(pAd, fRTMP_ADAPTER_NIC_NOT_EXIST)))
		{
			DBGPRINT_RAW(RT_DEBUG_ERROR, "Bulk In Failed\n");
			RTMP_SET_FLAG(pAd, fRTMP_ADAPTER_BULKIN_RESET);
			RTUSBEnqueueInternalCmd(pAd, RT_OID_USB_RESET_BULK_IN);
		}
	}

#endif
}

VOID	RTUSBInitTxDesc(
	IN	PRTMP_ADAPTER	pAd,
	IN	PTX_CONTEXT 	pTxContext,
	IN	UCHAR			BulkOutPipeId,
	IN	usb_complete_t	Func)
{
	PURB				pUrb;
	PUCHAR				pSrc = NULL;

	pUrb = pTxContext->pUrb;
	ASSERT(pUrb);

	// Store BulkOut PipeId
	pTxContext->BulkOutPipeId = BulkOutPipeId;
	
    pSrc = (PUCHAR) &pTxContext->TransferBuffer->TxDesc;


	//Initialize a tx bulk urb
	RTusb_fill_bulk_urb(pUrb,
						pAd->pUsb_Dev,
						usb_sndbulkpipe(pAd->pUsb_Dev, 1),
						pSrc,
						pTxContext->BulkOutSize,
						Func,
						pTxContext);
		
}

VOID	RTUSBInitRxDesc(
	IN	PRTMP_ADAPTER	pAd,
	IN	PRX_CONTEXT		pRxContext)
{
	PURB				pUrb;
	
	pUrb = pRxContext->pUrb;
	ASSERT(pUrb);

	//Initialize a rx bulk urb
	RTusb_fill_bulk_urb(pUrb,
						pAd->pUsb_Dev,
						usb_rcvbulkpipe(pAd->pUsb_Dev, 1),
						pRxContext->TransferBuffer,
						BUFFER_SIZE,
						RTUSBBulkRxComplete,
						pRxContext);
}

/*
	========================================================================
	
	Routine Description:

	Arguments:

	Return Value:

	Note:
	
	========================================================================
*/
VOID	RTUSBBulkOutDataPacket(
	IN	PRTMP_ADAPTER	pAd,
	IN	UCHAR			BulkOutPipeId,
	IN	UCHAR			Index)
{
	PTX_CONTEXT	pTxContext;
	PURB		pUrb;
	int 		ret = 0;
	ULONG		IrqFlags;
	
	NdisAcquireSpinLock(&pAd->BulkOutLock[BulkOutPipeId], IrqFlags);
	if (pAd->BulkOutPending[BulkOutPipeId] == TRUE)
	{
		NdisReleaseSpinLock(&pAd->BulkOutLock[BulkOutPipeId], IrqFlags);
		return;
	}
	pAd->BulkOutPending[BulkOutPipeId] = TRUE;
	NdisReleaseSpinLock(&pAd->BulkOutLock[BulkOutPipeId], IrqFlags);

	pTxContext = &(pAd->TxContext[BulkOutPipeId][Index]);

	// Increase Total transmit byte counter
	pAd->RalinkCounters.TransmittedByteCount +=  pTxContext->BulkOutSize;


	// Clear Data flag
	RTUSB_CLEAR_BULK_FLAG(pAd, (fRTUSB_BULK_OUT_DATA_FRAG << BulkOutPipeId));
	RTUSB_CLEAR_BULK_FLAG(pAd, (fRTUSB_BULK_OUT_DATA_NORMAL << BulkOutPipeId));

	if (pTxContext->bWaitingBulkOut	!= TRUE)
	{
		DBGPRINT(RT_DEBUG_ERROR, "RTUSBBulkOutDataPacket failed, pTxContext->bWaitingBulkOut != TRUE, Index %d, NextBulkOutIndex %d\n", 
			Index, pAd->NextBulkOutIndex[BulkOutPipeId]);
		NdisAcquireSpinLock(&pAd->BulkOutLock[BulkOutPipeId], IrqFlags);
		pAd->BulkOutPending[BulkOutPipeId] = FALSE;
		NdisReleaseSpinLock(&pAd->BulkOutLock[BulkOutPipeId], IrqFlags);
		return;
	}
	else if (pTxContext->BulkOutSize == 0)
	{
		//
		// This may happen on CCX Leap Ckip or Cmic
		// When the Key was been set not on time.
		// We will break it when the Key was Zero on RTUSBHardTransmit
		// And this will cause deadlock that the TxContext always InUse.
		//
		NdisAcquireSpinLock(&pAd->BulkOutLock[BulkOutPipeId], IrqFlags);
		
		pTxContext->InUse	   = FALSE;
		pTxContext->LastOne    = FALSE;
		pTxContext->IRPPending = FALSE;
		pTxContext->bWaitingBulkOut = FALSE;
		pTxContext->BulkOutSize= 0;
		pAd->NextBulkOutIndex[BulkOutPipeId] = (pAd->NextBulkOutIndex[BulkOutPipeId] + 1) % TX_RING_SIZE;
		pAd->BulkOutPending[BulkOutPipeId] = FALSE;
		NdisReleaseSpinLock(&pAd->BulkOutLock[BulkOutPipeId], IrqFlags);

		return;		
	}
	else if (!OPSTATUS_TEST_FLAG(pAd, fOP_STATUS_MEDIA_STATE_CONNECTED))
	{
		//
		// Since there is no connection, so we need to empty the Tx Bulk out Ring.
		//
		while (atomic_read(&pAd->TxCount) > 0)
		{
			DBGPRINT(RT_DEBUG_ERROR, "RTUSBBulkOutDataPacket failed, snice NdisMediaStateDisconnected discard NextBulkOutIndex %d, NextIndex = %d\n", 
				pAd->NextBulkOutIndex[BulkOutPipeId], pAd->NextTxIndex[BulkOutPipeId]);
				
			FREE_TX_RING(pAd, BulkOutPipeId, pTxContext);			
			pAd->TxRingTotalNumber[BulkOutPipeId]--;    // sync. to TxCount
			pTxContext = &(pAd->TxContext[BulkOutPipeId][pAd->NextBulkOutIndex[BulkOutPipeId]]);
		}

		NdisAcquireSpinLock(&pAd->BulkOutLock[BulkOutPipeId], IrqFlags);
		pAd->BulkOutPending[BulkOutPipeId] = FALSE;
		NdisReleaseSpinLock(&pAd->BulkOutLock[BulkOutPipeId], IrqFlags);

		return;
	}
	

	// Init Tx context descriptor
	RTUSBInitTxDesc(pAd, pTxContext, BulkOutPipeId, RTUSBBulkOutDataPacketComplete);

	
	pTxContext->IRPPending = TRUE;

	pUrb = pTxContext->pUrb;
	if((ret = rtusb_submit_urb(pUrb))!=0)
	{
		DBGPRINT(RT_DEBUG_ERROR, "Submit Tx URB failed %d\n", ret);
		return;
	}

	DBGPRINT_RAW(RT_DEBUG_INFO, "<---RTUSBBulkOutDataPacket \n");
	return;
}

/*
	========================================================================
	
	Routine Description:

	Arguments:

	Return Value:

	Note: NULL frame use BulkOutPipeId = 0
	
	========================================================================
*/
VOID	RTUSBBulkOutNullFrame(
	IN	PRTMP_ADAPTER	pAd)
{
	PTX_CONTEXT	pNullContext = &(pAd->NullContext);
	PURB		pUrb;
	int 		ret = 0;
	ULONG		IrqFlags;
	
	NdisAcquireSpinLock(&pAd->BulkOutLock[0], IrqFlags);
	if (pAd->BulkOutPending[0] == TRUE)
	{
		NdisReleaseSpinLock(&pAd->BulkOutLock[0], IrqFlags);
		return;
	}
	pAd->BulkOutPending[0] = TRUE;
	NdisReleaseSpinLock(&pAd->BulkOutLock[0], IrqFlags);

	// Increase Total transmit byte counter
	pAd->RalinkCounters.TransmittedByteCount +=  pNullContext->BulkOutSize;

	DBGPRINT_RAW(RT_DEBUG_INFO, "--->RTUSBBulkOutNullFrame \n");
	
	// Clear Null frame bulk flag
	RTUSB_CLEAR_BULK_FLAG(pAd, fRTUSB_BULK_OUT_DATA_NULL);


	// Init Tx context descriptor
	RTUSBInitTxDesc(pAd, pNullContext, 0, RTUSBBulkOutNullFrameComplete);
	pNullContext->IRPPending = TRUE;

	pUrb = pNullContext->pUrb;
	if((ret = rtusb_submit_urb(pUrb))!=0)
	{
		DBGPRINT(RT_DEBUG_ERROR,"Submit Tx URB failed %d\n", ret);
		return;
	}	
	
	DBGPRINT_RAW(RT_DEBUG_INFO, "<---RTUSBBulkOutNullFrame \n");
	return;
}

/*
	========================================================================
	
	Routine Description:

	Arguments:

	Return Value:

	Note: 
	
	========================================================================
*/
VOID	RTUSBBulkOutRTSFrame(
	IN	PRTMP_ADAPTER	pAd)
{
	PTX_CONTEXT	pRTSContext = &(pAd->RTSContext);
	PURB		pUrb;
	int 		ret = 0;
	ULONG		IrqFlags;
	UCHAR		PipeID=0;
	
	if (RTUSB_TEST_BULK_FLAG(pAd, fRTUSB_BULK_OUT_DATA_NORMAL_4))
		PipeID= 3;
	else if (RTUSB_TEST_BULK_FLAG(pAd, fRTUSB_BULK_OUT_DATA_NORMAL_3))
		PipeID= 2;
	else if (RTUSB_TEST_BULK_FLAG(pAd, fRTUSB_BULK_OUT_DATA_NORMAL_2))
		PipeID= 1;
	else if (RTUSB_TEST_BULK_FLAG(pAd, fRTUSB_BULK_OUT_DATA_NORMAL))
		PipeID= 0;


	NdisAcquireSpinLock(&pAd->BulkOutLock[PipeID], IrqFlags);
	if (pAd->BulkOutPending[PipeID] == TRUE)
	{
		NdisReleaseSpinLock(&pAd->BulkOutLock[PipeID], IrqFlags);
		return;
	}
	pAd->BulkOutPending[PipeID] = TRUE;
	NdisReleaseSpinLock(&pAd->BulkOutLock[PipeID], IrqFlags);

	// Increase Total transmit byte counter
	pAd->RalinkCounters.TransmittedByteCount +=  pRTSContext->BulkOutSize;

	DBGPRINT_RAW(RT_DEBUG_INFO, "--->RTUSBBulkOutRTSFrame \n");
	
	// Clear RTS frame bulk flag
	RTUSB_CLEAR_BULK_FLAG(pAd, fRTUSB_BULK_OUT_RTS);

	// Init Tx context descriptor
	RTUSBInitTxDesc(pAd, pRTSContext, PipeID, RTUSBBulkOutRTSFrameComplete);
	pRTSContext->IRPPending = TRUE;
	
	pUrb = pRTSContext->pUrb;
	if((ret = rtusb_submit_urb(pUrb))!=0)
	{
		DBGPRINT(RT_DEBUG_ERROR,"Submit Tx URB failed %d\n", ret);
		return;
	}	
	
	DBGPRINT_RAW(RT_DEBUG_INFO, "<---RTUSBBulkOutRTSFrame \n");
	return;
}

/*
	========================================================================
	
	Routine Description:

	Arguments:

	Return Value:

	Note: MLME use BulkOutPipeId = 0
	
	========================================================================
*/
VOID	RTUSBBulkOutMLMEPacket(
	IN	PRTMP_ADAPTER	pAd,
	IN	UCHAR			Index)
{
	PTX_CONTEXT		pMLMEContext;
	PURB			pUrb;
	int 			ret = 0;
	ULONG			IrqFlags;
	
	pMLMEContext = &pAd->MLMEContext[Index];
	
	NdisAcquireSpinLock(&pAd->BulkOutLock[0], IrqFlags);
	if (pAd->BulkOutPending[0] == TRUE)
	{
		NdisReleaseSpinLock(&pAd->BulkOutLock[0], IrqFlags);
		return;
	}
	pAd->BulkOutPending[0] = TRUE;
	NdisReleaseSpinLock(&pAd->BulkOutLock[0], IrqFlags);

	// Increase Total transmit byte counter
	pAd->RalinkCounters.TransmittedByteCount +=  pMLMEContext->BulkOutSize;

	// Clear MLME bulk flag
	RTUSB_CLEAR_BULK_FLAG(pAd, fRTUSB_BULK_OUT_MLME);

	DBGPRINT_RAW(RT_DEBUG_INFO, "RTUSBBulkOutMLMEPacket::PrioRingFirstIndex = %d, PrioRingTxCnt = %d, PopMgmtIndex = %d, PushMgmtIndex = %d, NextMLMEIndex = %d\n", 
			pAd->PrioRingFirstIndex, 
			pAd->PrioRingTxCnt, pAd->PopMgmtIndex, pAd->PushMgmtIndex, pAd->NextMLMEIndex);

	DBGPRINT_RAW(RT_DEBUG_INFO, "--->RTUSBBulkOutMLMEPacket\n");


	// Init Tx context descriptor
	RTUSBInitTxDesc(pAd, pMLMEContext, 0, RTUSBBulkOutMLMEPacketComplete);
	pMLMEContext->IRPPending = TRUE;


	pUrb = pMLMEContext->pUrb;
	if((ret = rtusb_submit_urb(pUrb))!=0)
	{
		DBGPRINT(RT_DEBUG_ERROR,"Submit MLME URB failed %d\n", ret);
		return;
	}
	
	DBGPRINT_RAW(RT_DEBUG_INFO, "<---RTUSBBulkOutMLMEPacket \n");
	return;
}

/*
	========================================================================
	
	Routine Description:

	Arguments:

	Return Value:

	Note: PsPoll use BulkOutPipeId = 0
	
	========================================================================
*/
VOID	RTUSBBulkOutPsPoll(
	IN	PRTMP_ADAPTER	pAd)
{
	PTX_CONTEXT		pPsPollContext = &(pAd->PsPollContext);
	PURB			pUrb;
	int 			ret = 0;
	ULONG			IrqFlags;
	
	NdisAcquireSpinLock(&pAd->BulkOutLock[0], IrqFlags);
	if (pAd->BulkOutPending[0] == TRUE)
	{
		NdisReleaseSpinLock(&pAd->BulkOutLock[0], IrqFlags);
		return;
	}
	pAd->BulkOutPending[0] = TRUE;
	NdisReleaseSpinLock(&pAd->BulkOutLock[0], IrqFlags);

	DBGPRINT_RAW(RT_DEBUG_INFO, "--->RTUSBBulkOutPsPoll \n");
	
	// Clear PS-Poll bulk flag
	RTUSB_CLEAR_BULK_FLAG(pAd, fRTUSB_BULK_OUT_PSPOLL);


	// Init Tx context descriptor
	RTUSBInitTxDesc(pAd, pPsPollContext, 0, RTUSBBulkOutPsPollComplete);
	pPsPollContext->IRPPending = TRUE;
	
	pUrb = pPsPollContext->pUrb;
	if((ret = rtusb_submit_urb(pUrb))!=0)