drivers/staging/rt2870/common/rtusb_bulk.c

/*
 *************************************************************************
 * Ralink Tech Inc.
 * 5F., No.36, Taiyuan St., Jhubei City,
 * Hsinchu County 302,
 * Taiwan, R.O.C.
 *
 * (c) Copyright 2002-2007, Ralink Technology, Inc.
 *
 * This program is free software; you can redistribute it and/or modify  *
 * it under the terms of the GNU General Public License as published by  *
 * the Free Software Foundation; either version 2 of the License, or     *
 * (at your option) any later version.                                   *
 *                                                                       *
 * This program is distributed in the hope that it will be useful,       *
 * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 * GNU General Public License for more details.                          *
 *                                                                       *
 * You should have received a copy of the GNU General Public License     *
 * along with this program; if not, write to the                         *
 * Free Software Foundation, Inc.,                                       *
 * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 *                                                                       *
 *************************************************************************

	Module Name:
	rtusb_bulk.c

	Abstract:

	Revision History:
	Who			When		What
	--------	----------	----------------------------------------------
	Name		Date		Modification logs
	Paul Lin	06-25-2004	created

*/

#ifdef RTMP_MAC_USB

#include "../rt_config.h"
/* Match total 6 bulkout endpoint to corresponding queue. */
u8 EpToQueue[6] =
    { FIFO_EDCA, FIFO_EDCA, FIFO_EDCA, FIFO_EDCA, FIFO_EDCA, FIFO_MGMT };

/*static BOOLEAN SingleBulkOut = FALSE; */

void RTUSB_FILL_BULK_URB(struct urb *pUrb,
			 struct usb_device *pUsb_Dev,
			 unsigned int bulkpipe,
			 void *pTransferBuf,
			 int BufSize, usb_complete_t Complete, void *pContext)
{

	usb_fill_bulk_urb(pUrb, pUsb_Dev, bulkpipe, pTransferBuf, BufSize,
			  (usb_complete_t) Complete, pContext);

}

void RTUSBInitTxDesc(struct rt_rtmp_adapter *pAd,
		     struct rt_tx_context *pTxContext,
		     u8 BulkOutPipeId, IN usb_complete_t Func)
{
	PURB pUrb;
	u8 *pSrc = NULL;
	struct os_cookie *pObj = (struct os_cookie *)pAd->OS_Cookie;

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

	/* Store BulkOut PipeId */
	pTxContext->BulkOutPipeId = BulkOutPipeId;

	if (pTxContext->bAggregatible) {
		pSrc = &pTxContext->TransferBuffer->Aggregation[2];
	} else {
		pSrc =
		    (u8 *)pTxContext->TransferBuffer->field.WirelessPacket;
	}

	/*Initialize a tx bulk urb */
	RTUSB_FILL_BULK_URB(pUrb,
			    pObj->pUsb_Dev,
			    usb_sndbulkpipe(pObj->pUsb_Dev,
					    pAd->BulkOutEpAddr[BulkOutPipeId]),
			    pSrc, pTxContext->BulkOutSize, Func, pTxContext);

	if (pTxContext->bAggregatible)
		pUrb->transfer_dma =
		    (pTxContext->data_dma + TX_BUFFER_NORMSIZE + 2);
	else
		pUrb->transfer_dma = pTxContext->data_dma;

	pUrb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;

}

void RTUSBInitHTTxDesc(struct rt_rtmp_adapter *pAd,
		       struct rt_ht_tx_context *pTxContext,
		       u8 BulkOutPipeId,
		       unsigned long BulkOutSize, IN usb_complete_t Func)
{
	PURB pUrb;
	u8 *pSrc = NULL;
	struct os_cookie *pObj = (struct os_cookie *)pAd->OS_Cookie;

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

	/* Store BulkOut PipeId */
	pTxContext->BulkOutPipeId = BulkOutPipeId;

	pSrc =
	    &pTxContext->TransferBuffer->field.WirelessPacket[pTxContext->
							      NextBulkOutPosition];

	/*Initialize a tx bulk urb */
	RTUSB_FILL_BULK_URB(pUrb,
			    pObj->pUsb_Dev,
			    usb_sndbulkpipe(pObj->pUsb_Dev,
					    pAd->BulkOutEpAddr[BulkOutPipeId]),
			    pSrc, BulkOutSize, Func, pTxContext);

	pUrb->transfer_dma =
	    (pTxContext->data_dma + pTxContext->NextBulkOutPosition);
	pUrb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;

}

void RTUSBInitRxDesc(struct rt_rtmp_adapter *pAd, struct rt_rx_context *pRxContext)
{
	PURB pUrb;
	struct os_cookie *pObj = (struct os_cookie *)pAd->OS_Cookie;
	unsigned long RX_bulk_size;

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

	if (pAd->BulkInMaxPacketSize == 64)
		RX_bulk_size = 4096;
	else
		RX_bulk_size = MAX_RXBULK_SIZE;

	/*Initialize a rx bulk urb */
	RTUSB_FILL_BULK_URB(pUrb,
			    pObj->pUsb_Dev,
			    usb_rcvbulkpipe(pObj->pUsb_Dev, pAd->BulkInEpAddr),
			    &(pRxContext->
			      TransferBuffer[pAd->NextRxBulkInPosition]),
			    RX_bulk_size - (pAd->NextRxBulkInPosition),
			    (usb_complete_t) RTUSBBulkRxComplete,
			    (void *)pRxContext);

	pUrb->transfer_dma = pRxContext->data_dma + pAd->NextRxBulkInPosition;
	pUrb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;

}

/*
	========================================================================

	Routine Description:

	Arguments:

	Return Value:

	Note:

	========================================================================
*/

#define BULK_OUT_LOCK(pLock, IrqFlags)	\
		if (1 /*!(in_interrupt() & 0xffff0000)*/)	\
			RTMP_IRQ_LOCK((pLock), IrqFlags);

#define BULK_OUT_UNLOCK(pLock, IrqFlags)	\
		if (1 /*!(in_interrupt() & 0xffff0000)*/)	\
			RTMP_IRQ_UNLOCK((pLock), IrqFlags);

void RTUSBBulkOutDataPacket(struct rt_rtmp_adapter *pAd,
			    u8 BulkOutPipeId, u8 Index)
{

	struct rt_ht_tx_context *pHTTXContext;
	PURB pUrb;
	int ret = 0;
	struct rt_txinfo *pTxInfo, *pLastTxInfo = NULL;
	struct rt_txwi *pTxWI;
	unsigned long TmpBulkEndPos, ThisBulkSize;
	unsigned long IrqFlags = 0, IrqFlags2 = 0;
	u8 *pWirelessPkt, *pAppendant;
	BOOLEAN bTxQLastRound = FALSE;
	u8 allzero[4] = { 0x0, 0x0, 0x0, 0x0 };

	BULK_OUT_LOCK(&pAd->BulkOutLock[BulkOutPipeId], IrqFlags);
	if ((pAd->BulkOutPending[BulkOutPipeId] == TRUE)
	    || RTMP_TEST_FLAG(pAd, fRTMP_ADAPTER_NEED_STOP_TX)) {
		BULK_OUT_UNLOCK(&pAd->BulkOutLock[BulkOutPipeId], IrqFlags);
		return;
	}
	pAd->BulkOutPending[BulkOutPipeId] = TRUE;

	if (!OPSTATUS_TEST_FLAG(pAd, fOP_STATUS_MEDIA_STATE_CONNECTED)
	    ) {
		pAd->BulkOutPending[BulkOutPipeId] = FALSE;
		BULK_OUT_UNLOCK(&pAd->BulkOutLock[BulkOutPipeId], IrqFlags);
		return;
	}
	BULK_OUT_UNLOCK(&pAd->BulkOutLock[BulkOutPipeId], IrqFlags);

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

	BULK_OUT_LOCK(&pAd->TxContextQueueLock[BulkOutPipeId], IrqFlags2);
	if ((pHTTXContext->ENextBulkOutPosition ==
	     pHTTXContext->CurWritePosition)
	    || ((pHTTXContext->ENextBulkOutPosition - 8) ==
		pHTTXContext->CurWritePosition)) {
		BULK_OUT_UNLOCK(&pAd->TxContextQueueLock[BulkOutPipeId],
				IrqFlags2);

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

		/* 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));

		BULK_OUT_UNLOCK(&pAd->BulkOutLock[BulkOutPipeId], IrqFlags);
		return;
	}
	/* 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));

	/*DBGPRINT(RT_DEBUG_TRACE,("BulkOut-B:I=0x%lx, CWPos=%ld, CWRPos=%ld, NBPos=%ld, ENBPos=%ld, bCopy=%d!\n", in_interrupt(), */
	/*                                                      pHTTXContext->CurWritePosition, pHTTXContext->CurWriteRealPos, pHTTXContext->NextBulkOutPosition, */
	/*                                                      pHTTXContext->ENextBulkOutPosition, pHTTXContext->bCopySavePad)); */
	pHTTXContext->NextBulkOutPosition = pHTTXContext->ENextBulkOutPosition;
	ThisBulkSize = 0;
	TmpBulkEndPos = pHTTXContext->NextBulkOutPosition;
	pWirelessPkt = &pHTTXContext->TransferBuffer->field.WirelessPacket[0];

	if ((pHTTXContext->bCopySavePad == TRUE)) {
		if (RTMPEqualMemory(pHTTXContext->SavedPad, allzero, 4)) {
			DBGPRINT_RAW(RT_DEBUG_ERROR,
				     ("e1, allzero : %x  %x  %x  %x  %x  %x  %x  %x \n",
				      pHTTXContext->SavedPad[0],
				      pHTTXContext->SavedPad[1],
				      pHTTXContext->SavedPad[2],
				      pHTTXContext->SavedPad[3]
				      , pHTTXContext->SavedPad[4],
				      pHTTXContext->SavedPad[5],
				      pHTTXContext->SavedPad[6],
				      pHTTXContext->SavedPad[7]));
		}
		NdisMoveMemory(&pWirelessPkt[TmpBulkEndPos],
			       pHTTXContext->SavedPad, 8);
		pHTTXContext->bCopySavePad = FALSE;
		if (pAd->bForcePrintTX == TRUE)
			DBGPRINT(RT_DEBUG_TRACE,
				 ("RTUSBBulkOutDataPacket --> COPY PAD. CurWrite = %ld, NextBulk = %ld.   ENextBulk = %ld.\n",
				  pHTTXContext->CurWritePosition,
				  pHTTXContext->NextBulkOutPosition,
				  pHTTXContext->ENextBulkOutPosition));
	}

	do {
		pTxInfo = (struct rt_txinfo *)&pWirelessPkt[TmpBulkEndPos];
		pTxWI =
			(struct rt_txwi *)&pWirelessPkt[TmpBulkEndPos + TXINFO_SIZE];

		if (pAd->bForcePrintTX == TRUE)
			DBGPRINT(RT_DEBUG_TRACE,
				 ("RTUSBBulkOutDataPacket AMPDU = %d.\n",
				  pTxWI->AMPDU));

		/* add by Iverson, limit BulkOut size to 4k to pass WMM b mode 2T1R test items */
		/*if ((ThisBulkSize != 0)  && (pTxWI->AMPDU == 0)) */
		if ((ThisBulkSize != 0) && (pTxWI->PHYMODE == MODE_CCK)) {
			if (((ThisBulkSize & 0xffff8000) != 0)
			    || ((ThisBulkSize & 0x1000) == 0x1000)) {
				/* Limit BulkOut size to about 4k bytes. */
				pHTTXContext->ENextBulkOutPosition =
				    TmpBulkEndPos;
				break;
			} else
			    if (((pAd->BulkOutMaxPacketSize < 512)
				 && ((ThisBulkSize & 0xfffff800) !=
				     0))
				/*|| ( (ThisBulkSize != 0)  && (pTxWI->AMPDU == 0)) */
				) {
				/* For USB 1.1 or peer which didn't support AMPDU, limit the BulkOut size. */
				/* For performence in b/g mode, now just check for USB 1.1 and didn't care about the APMDU or not! 2008/06/04. */
				pHTTXContext->ENextBulkOutPosition =
				    TmpBulkEndPos;
				break;
			}
		}
		/* end Iverson */
		else {
			if (((ThisBulkSize & 0xffff8000) != 0) || ((ThisBulkSize & 0x6000) == 0x6000)) {	/* Limit BulkOut size to about 24k bytes. */
				pHTTXContext->ENextBulkOutPosition =
				    TmpBulkEndPos;
				break;
			} else if (((pAd->BulkOutMaxPacketSize < 512) && ((ThisBulkSize & 0xfffff800) != 0)) /*|| ( (ThisBulkSize != 0)  && (pTxWI->AMPDU == 0)) */) {	/* For USB 1.1 or peer which didn't support AMPDU, limit the BulkOut size. */
				/* For performence in b/g mode, now just check for USB 1.1 and didn't care about the APMDU or not! 2008/06/04. */
				pHTTXContext->ENextBulkOutPosition =
				    TmpBulkEndPos;
				break;
			}
		}

		if (TmpBulkEndPos == pHTTXContext->CurWritePosition) {
			pHTTXContext->ENextBulkOutPosition = TmpBulkEndPos;
			break;
		}

		if (pTxInfo->QSEL != FIFO_EDCA) {
			DBGPRINT(RT_DEBUG_ERROR,
				 ("%s(): ====> pTxInfo->QueueSel(%d)!= FIFO_EDCA!!!!\n",
				  __func__, pTxInfo->QSEL));
			DBGPRINT(RT_DEBUG_ERROR,
				 ("\tCWPos=%ld, NBPos=%ld, ENBPos=%ld, bCopy=%d!\n",
				  pHTTXContext->CurWritePosition,
				  pHTTXContext->NextBulkOutPosition,
				  pHTTXContext->ENextBulkOutPosition,
				  pHTTXContext->bCopySavePad));
			hex_dump("Wrong QSel Pkt:",
				 (u8 *)&pWirelessPkt[TmpBulkEndPos],
				 (pHTTXContext->CurWritePosition -
				  pHTTXContext->NextBulkOutPosition));
		}

		if (pTxInfo->USBDMATxPktLen <= 8) {
			BULK_OUT_UNLOCK(&pAd->TxContextQueueLock[BulkOutPipeId],
					IrqFlags2);
			DBGPRINT(RT_DEBUG_ERROR /*RT_DEBUG_TRACE */ ,
				 ("e2, USBDMATxPktLen==0, Size=%ld, bCSPad=%d, CWPos=%ld, NBPos=%ld, CWRPos=%ld!\n",
				  pHTTXContext->BulkOutSize,
				  pHTTXContext->bCopySavePad,
				  pHTTXContext->CurWritePosition,
				  pHTTXContext->NextBulkOutPosition,
				  pHTTXContext->CurWriteRealPos));
			{
				DBGPRINT_RAW(RT_DEBUG_ERROR /*RT_DEBUG_TRACE */
					     ,
					     ("%x  %x  %x  %x  %x  %x  %x  %x \n",
					      pHTTXContext->SavedPad[0],
					      pHTTXContext->SavedPad[1],
					      pHTTXContext->SavedPad[2],
					      pHTTXContext->SavedPad[3]
					      , pHTTXContext->SavedPad[4],
					      pHTTXContext->SavedPad[5],
					      pHTTXContext->SavedPad[6],
					      pHTTXContext->SavedPad[7]));
			}
			pAd->bForcePrintTX = TRUE;
			BULK_OUT_LOCK(&pAd->BulkOutLock[BulkOutPipeId],
				      IrqFlags);
			pAd->BulkOutPending[BulkOutPipeId] = FALSE;
			BULK_OUT_UNLOCK(&pAd->BulkOutLock[BulkOutPipeId],
					IrqFlags);
			/*DBGPRINT(RT_DEBUG_LOUD,("Out:pTxInfo->USBDMATxPktLen=%d!\n", pTxInfo->USBDMATxPktLen)); */
			return;
		}
		/* Increase Total transmit byte counter */
		pAd->RalinkCounters.OneSecTransmittedByteCount +=
		    pTxWI->MPDUtotalByteCount;
		pAd->RalinkCounters.TransmittedByteCount +=
		    pTxWI->MPDUtotalByteCount;

		pLastTxInfo = pTxInfo;

		/* Make sure we use EDCA QUEUE. */
		pTxInfo->QSEL = FIFO_EDCA;
		ThisBulkSize += (pTxInfo->USBDMATxPktLen + 4);
		TmpBulkEndPos += (pTxInfo->USBDMATxPktLen + 4);

		if (TmpBulkEndPos != pHTTXContext->CurWritePosition)
			pTxInfo->USBDMANextVLD = 1;

		if (pTxInfo->SwUseLastRound == 1) {
			if (pHTTXContext->CurWritePosition == 8)
				pTxInfo->USBDMANextVLD = 0;
			pTxInfo->SwUseLastRound = 0;

			bTxQLastRound = TRUE;
			pHTTXContext->ENextBulkOutPosition = 8;

			break;
		}

	} while (TRUE);

	/* adjust the pTxInfo->USBDMANextVLD value of last pTxInfo. */
	if (pLastTxInfo)
		pLastTxInfo->USBDMANextVLD = 0;

	/*
	   We need to copy SavedPad when following condition matched!
	   1. Not the last round of the TxQueue and
	   2. any match of following cases:
	   (1). The End Position of this bulk out is reach to the Currenct Write position and
	   the TxInfo and related header already write to the CurWritePosition.
	   =>(ENextBulkOutPosition == CurWritePosition) && (CurWriteRealPos > CurWritePosition)

	   (2). The EndPosition of the bulk out is not reach to the Current Write Position.
	   =>(ENextBulkOutPosition != CurWritePosition)
	 */
	if ((bTxQLastRound == FALSE) &&
	    (((pHTTXContext->ENextBulkOutPosition ==
	       pHTTXContext->CurWritePosition)
	      && (pHTTXContext->CurWriteRealPos >
		  pHTTXContext->CurWritePosition))
	     || (pHTTXContext->ENextBulkOutPosition !=
		 pHTTXContext->CurWritePosition))
	    ) {
		NdisMoveMemory(pHTTXContext->SavedPad,
			       &pWirelessPkt[pHTTXContext->
					     ENextBulkOutPosition], 8);
		pHTTXContext->bCopySavePad = TRUE;
		if (RTMPEqualMemory(pHTTXContext->SavedPad, allzero, 4)) {
			u8 *pBuf = &pHTTXContext->SavedPad[0];
			DBGPRINT_RAW(RT_DEBUG_ERROR,
				     ("WARNING-Zero-3:%02x%02x%02x%02x%02x%02x%02x%02x,CWPos=%ld, CWRPos=%ld, bCW=%d, NBPos=%ld, TBPos=%ld, TBSize=%ld\n",
				      pBuf[0], pBuf[1], pBuf[2], pBuf[3],
				      pBuf[4], pBuf[5], pBuf[6], pBuf[7],
				      pHTTXContext->CurWritePosition,
				      pHTTXContext->CurWriteRealPos,
				      pHTTXContext->bCurWriting,
				      pHTTXContext->NextBulkOutPosition,
				      TmpBulkEndPos, ThisBulkSize));

			pBuf = &pWirelessPkt[pHTTXContext->CurWritePosition];
			DBGPRINT_RAW(RT_DEBUG_ERROR,
				     ("\tCWPos=%02x%02x%02x%02x%02x%02x%02x%02x\n",
				      pBuf[0], pBuf[1], pBuf[2], pBuf[3],
				      pBuf[4], pBuf[5], pBuf[6], pBuf[7]));
		}
		/*DBGPRINT(RT_DEBUG_LOUD,("ENPos==CWPos=%ld, CWRPos=%ld, bCSPad=%d!\n", pHTTXContext->CurWritePosition, pHTTXContext->CurWriteRealPos, pHTTXContext->bCopySavePad)); */
	}

	if (pAd->bForcePrintTX == TRUE)
		DBGPRINT(RT_DEBUG_TRACE,
			 ("BulkOut-A:Size=%ld, CWPos=%ld, NBPos=%ld, ENBPos=%ld, bCopy=%d!\n",
			  ThisBulkSize, pHTTXContext->CurWritePosition,
			  pHTTXContext->NextBulkOutPosition,
			  pHTTXContext->ENextBulkOutPosition,
			  pHTTXContext->bCopySavePad));
	/*DBGPRINT(RT_DEBUG_LOUD,("BulkOut-A:Size=%ld, CWPos=%ld, CWRPos=%ld, NBPos=%ld, ENBPos=%ld, bCopy=%d, bLRound=%d!\n", ThisBulkSize, pHTTXContext->CurWritePosition, pHTTXContext->CurWriteRealPos, pHTTXContext->NextBulkOutPosition, pHTTXContext->ENextBulkOutPosition, pHTTXContext->bCopySavePad, bTxQLastRound)); */

	/* USB DMA engine requires to pad extra 4 bytes. This pad doesn't count into real bulkoutsize. */
	pAppendant = &pWirelessPkt[TmpBulkEndPos];
	NdisZeroMemory(pAppendant, 8);
	ThisBulkSize += 4;
	pHTTXContext->LastOne = TRUE;
	if ((ThisBulkSize % pAd->BulkOutMaxPacketSize) == 0)
		ThisBulkSize += 4;
	pHTTXContext->BulkOutSize = ThisBulkSize;

	pAd->watchDogTxPendingCnt[BulkOutPipeId] = 1;
	BULK_OUT_UNLOCK(&pAd->TxContextQueueLock[BulkOutPipeId], IrqFlags2);

	/* Init Tx context descriptor */
	RTUSBInitHTTxDesc(pAd, pHTTXContext, BulkOutPipeId, ThisBulkSize,
			  (usb_complete_t) RTUSBBulkOutDataPacketComplete);

	pUrb = pHTTXContext->pUrb;
	ret = RTUSB_SUBMIT_URB(pUrb);
	if (ret != 0) {
		DBGPRINT(RT_DEBUG_ERROR,
			 ("RTUSBBulkOutDataPacket: Submit Tx URB failed %d\n",
			  ret));

		BULK_OUT_LOCK(&pAd->BulkOutLock[BulkOutPipeId], IrqFlags);
		pAd->BulkOutPending[BulkOutPipeId] = FALSE;
		pAd->watchDogTxPendingCnt[BulkOutPipeId] = 0;
		BULK_OUT_UNLOCK(&pAd->BulkOutLock[BulkOutPipeId], IrqFlags);

		return;
	}

	BULK_OUT_LOCK(&pAd->BulkOutLock[BulkOutPipeId], IrqFlags);
	pHTTXContext->IRPPending = TRUE;
	BULK_OUT_UNLOCK(&pAd->BulkOutLock[BulkOutPipeId], IrqFlags);
	pAd->BulkOutReq++;

}

void RTUSBBulkOutDataPacketComplete(struct urb *pUrb, struct pt_regs * pt_regs)
{
	struct rt_ht_tx_context *pHTTXContext;
	struct rt_rtmp_adapter *pAd;
	struct os_cookie *pObj;
	u8 BulkOutPipeId;

	pHTTXContext = (struct rt_ht_tx_context *)pUrb->context;
	pAd = pHTTXContext->pAd;
	pObj = (struct os_cookie *)pAd->OS_Cookie;

	/* Store BulkOut PipeId */
	BulkOutPipeId = pHTTXContext->BulkOutPipeId;
	pAd->BulkOutDataOneSecCount++;

	switch (BulkOutPipeId) {
	case 0:
		pObj->ac0_dma_done_task.data = (unsigned long)pUrb;
		tasklet_hi_schedule(&pObj->ac0_dma_done_task);
		break;
	case 1:
		pObj->ac1_dma_done_task.data = (unsigned long)pUrb;
		tasklet_hi_schedule(&pObj->ac1_dma_done_task);
		break;
	case 2:
		pObj->ac2_dma_done_task.data = (unsigned long)pUrb;
		tasklet_hi_schedule(&pObj->ac2_dma_done_task);
		break;
	case 3:
		pObj->ac3_dma_done_task.data = (unsigned long)pUrb;
		tasklet_hi_schedule(&pObj->ac3_dma_done_task);
		break;
	}

}

/*
	========================================================================

	Routine Description:

	Arguments:

	Return Value:

	Note: NULL frame use BulkOutPipeId = 0

	========================================================================
*/
void RTUSBBulkOutNullFrame(struct rt_rtmp_adapter *pAd)
{
	struct rt_tx_context *pNullContext = &(pAd->NullContext);
	PURB pUrb;
	int ret = 0;
	unsigned long IrqFlags;

	RTMP_IRQ_LOCK(&pAd->BulkOutLock[0], IrqFlags);
	if ((pAd->BulkOutPending[0] == TRUE)
	    || RTMP_TEST_FLAG(pAd, fRTMP_ADAPTER_NEED_STOP_TX)) {
		RTMP_IRQ_UNLOCK(&pAd->BulkOutLock[0], IrqFlags);
		return;
	}
	pAd->BulkOutPending[0] = TRUE;
	pAd->watchDogTxPendingCnt[0] = 1;
	pNullContext->IRPPending = TRUE;
	RTMP_IRQ_UNLOCK(&pAd->BulkOutLock[0], IrqFlags);

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

	/* Clear Null frame bulk flag */
	RTUSB_CLEAR_BULK_FLAG(pAd, fRTUSB_BULK_OUT_DATA_NULL);

	/* Init Tx context descriptor */
	RTUSBInitTxDesc(pAd, pNullContext, 0,
			(usb_complete_t) RTUSBBulkOutNullFrameComplete);

	pUrb = pNullContext->pUrb;
	ret = RTUSB_SUBMIT_URB(pUrb);
	if (ret != 0) {
		RTMP_IRQ_LOCK(&pAd->BulkOutLock[0], IrqFlags);
		pAd->BulkOutPending[0] = FALSE;
		pAd->watchDogTxPendingCnt[0] = 0;
		pNullContext->IRPPending = FALSE;
		RTMP_IRQ_UNLOCK(&pAd->BulkOutLock[0], IrqFlags);

		DBGPRINT(RT_DEBUG_ERROR,
			 ("RTUSBBulkOutNullFrame: Submit Tx URB failed %d\n",
			  ret));
		return;
	}

}

/* NULL frame use BulkOutPipeId = 0 */
void RTUSBBulkOutNullFrameComplete(struct urb *pUrb, struct pt_regs * pt_regs)
{
	struct rt_rtmp_adapter *pAd;
	struct rt_tx_context *pNullContext;
	int Status;
	struct os_cookie *pObj;

	pNullContext = (struct rt_tx_context *)pUrb->context;
	pAd = pNullContext->pAd;
	Status = pUrb->status;

	pObj = (struct os_cookie *)pAd->OS_Cookie;
	pObj->null_frame_complete_task.data = (unsigned long)pUrb;
	tasklet_hi_schedule(&pObj->null_frame_complete_task);
}

/*
	========================================================================

	Routine Description:

	Arguments:

	Return Value:

	Note: MLME use BulkOutPipeId = 0

	========================================================================
*/
void RTUSBBulkOutMLMEPacket(struct rt_rtmp_adapter *pAd, u8 Index)
{
	struct rt_tx_context *pMLMEContext;
	PURB pUrb;
	int ret = 0;
	unsigned long IrqFlags;

	pMLMEContext =
	    (struct rt_tx_context *)pAd->MgmtRing.Cell[pAd->MgmtRing.TxDmaIdx].AllocVa;
	pUrb = pMLMEContext->pUrb;

	if ((pAd->MgmtRing.TxSwFreeIdx >= MGMT_RING_SIZE) ||
	    (pMLMEContext->InUse == FALSE) ||
	    (pMLMEContext->bWaitingBulkOut == FALSE)) {

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

		return;
	}

	RTMP_IRQ_LOCK(&pAd->BulkOutLock[MGMTPIPEIDX], IrqFlags);
	if ((pAd->BulkOutPending[MGMTPIPEIDX] == TRUE)
	    || RTMP_TEST_FLAG(pAd, fRTMP_ADAPTER_NEED_STOP_TX)) {
		RTMP_IRQ_UNLOCK(&pAd->BulkOutLock[MGMTPIPEIDX], IrqFlags);
		return;
	}

	pAd->BulkOutPending[MGMTPIPEIDX] = TRUE;
	pAd->watchDogTxPendingCnt[MGMTPIPEIDX] = 1;
	pMLMEContext->IRPPending = TRUE;
	pMLMEContext->bWaitingBulkOut = FALSE;
	RTMP_IRQ_UNLOCK(&pAd->BulkOutLock[MGMTPIPEIDX], IrqFlags);

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

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

	/* Init Tx context descriptor */
	RTUSBInitTxDesc(pAd, pMLMEContext, MGMTPIPEIDX,
			(usb_complete_t) RTUSBBulkOutMLMEPacketComplete);

	/*For mgmt urb buffer, because we use sk_buff, so we need to notify the USB controller do dma mapping. */
	pUrb->transfer_dma = 0;
	pUrb->transfer_flags &= (~URB_NO_TRANSFER_DMA_MAP);

	pUrb = pMLMEContext->pUrb;
	ret = RTUSB_SUBMIT_URB(pUrb);
	if (ret != 0) {
		DBGPRINT(RT_DEBUG_ERROR,
			 ("RTUSBBulkOutMLMEPacket: Submit MLME URB failed %d\n",
			  ret));
		RTMP_IRQ_LOCK(&pAd->BulkOutLock[MGMTPIPEIDX], IrqFlags);
		pAd->BulkOutPending[MGMTPIPEIDX] = FALSE;
		pAd->watchDogTxPendingCnt[MGMTPIPEIDX] = 0;
		pMLMEContext->IRPPending = FALSE;
		pMLMEContext->bWaitingBulkOut = TRUE;
		RTMP_IRQ_UNLOCK(&pAd->BulkOutLock[MGMTPIPEIDX], IrqFlags);

		return;
	}
	/*DBGPRINT_RAW(RT_DEBUG_INFO, ("<---RTUSBBulkOutMLMEPacket \n")); */
/*      printk("<---RTUSBBulkOutMLMEPacket,Cpu=%d!, Dma=%d, SwIdx=%d!\n", pAd->MgmtRing.TxCpuIdx, pAd->MgmtRing.TxDmaIdx, pAd->MgmtRing.TxSwFreeIdx); */
}

void RTUSBBulkOutMLMEPacketComplete(struct urb *pUrb, struct pt_regs * pt_regs)
{
	struct rt_tx_context *pMLMEContext;
	struct rt_rtmp_adapter *pAd;
	int Status;
	struct os_cookie *pObj;
	int index;

	/*DBGPRINT_RAW(RT_DEBUG_INFO, ("--->RTUSBBulkOutMLMEPacketComplete\n")); */
	pMLMEContext = (struct rt_tx_context *)pUrb->context;
	pAd = pMLMEContext->pAd;
	pObj = (struct os_cookie *)pAd->OS_Cookie;
	Status = pUrb->status;
	index = pMLMEContext->SelfIdx;

	pObj->mgmt_dma_done_task.data = (unsigned long)pUrb;
	tasklet_hi_schedule(&pObj->mgmt_dma_done_task);
}

/*
	========================================================================

	Routine Description:

	Arguments:

	Return Value:

	Note: PsPoll use BulkOutPipeId = 0

	========================================================================
*/
void RTUSBBulkOutPsPoll(struct rt_rtmp_adapter *pAd)
{
	struct rt_tx_context *pPsPollContext = &(pAd->PsPollContext);
	PURB pUrb;
	int ret = 0;
	unsigned long IrqFlags;

	RTMP_IRQ_LOCK(&pAd->BulkOutLock[0], IrqFlags);
	if ((pAd->BulkOutPending[0] == TRUE)
	    || RTMP_TEST_FLAG(pAd, fRTMP_ADAPTER_NEED_STOP_TX)) {
		RTMP_IRQ_UNLOCK(&pAd->BulkOutLock[0], IrqFlags);
		return;
	}
	pAd->BulkOutPending[0] = TRUE;
	pAd->watchDogTxPendingCnt[0] = 1;
	pPsPollContext->IRPPending = TRUE;
	RTMP_IRQ_UNLOCK(&pAd->BulkOutLock[0], IrqFlags);

	/* Clear PS-Poll bulk flag */
	RTUSB_CLEAR_BULK_FLAG(pAd, fRTUSB_BULK_OUT_PSPOLL);

	/* Init Tx context descriptor */
	RTUSBInitTxDesc(pAd, pPsPollContext, MGMTPIPEIDX,
			(usb_complete_t) RTUSBBulkOutPsPollComplete);

	pUrb = pPsPollContext->pUrb;
	ret = RTUSB_SUBMIT_URB(pUrb);
	if (ret != 0) {
		RTMP_IRQ_LOCK(&pAd->BulkOutLock[0], IrqFlags);
		pAd->BulkOutPending[0] = FALSE;
		pAd->watchDogTxPendingCnt[0] = 0;
		pPsPollContext->IRPPending = FALSE;
		RTMP_IRQ_UNLOCK(&pAd->BulkOutLock[0], IrqFlags);

		DBGPRINT(RT_DEBUG_ERROR,
			 ("RTUSBBulkOutPsPoll: Submit Tx URB failed %d\n",
			  ret));
		return;
	}

}

/* PS-Poll frame use BulkOutPipeId = 0 */
void RTUSBBulkOutPsPollComplete(struct urb *pUrb, struct pt_regs * pt_regs)
{
	struct rt_rtmp_adapter *pAd;
	struct rt_tx_context *pPsPollContext;
	int Status;
	struct os_cookie *pObj;

	pPsPollContext = (struct rt_tx_context *)pUrb->context;
	pAd = pPsPollContext->pAd;
	Status = pUrb->status;

	pObj = (struct os_cookie *)pAd->OS_Cookie;
	pObj->pspoll_frame_complete_task.data = (unsigned long)pUrb;
	tasklet_hi_schedule(&pObj->pspoll_frame_complete_task);
}

void DoBulkIn(struct rt_rtmp_adapter *pAd)
{
	struct rt_rx_context *pRxContext;
	PURB pUrb;
	int ret = 0;
	unsigned long IrqFlags;

	RTMP_IRQ_LOCK(&pAd->BulkInLock, IrqFlags);
	pRxContext = &(pAd->RxContext[pAd->NextRxBulkInIndex]);
	if ((pAd->PendingRx > 0) || (pRxContext->Readable == TRUE)
	    || (pRxContext->InUse == TRUE)) {
		RTMP_IRQ_UNLOCK(&pAd->BulkInLock, IrqFlags);
		return;
	}
	pRxContext->InUse = TRUE;
	pRxContext->IRPPending = TRUE;
	pAd->PendingRx++;
	pAd->BulkInReq++;
	RTMP_IRQ_UNLOCK(&pAd->BulkInLock, IrqFlags);

	/* Init Rx context descriptor */
	NdisZeroMemory(pRxContext->TransferBuffer, pRxContext->BulkInOffset);
	RTUSBInitRxDesc(pAd, pRxContext);

	pUrb = pRxContext->pUrb;
	ret = RTUSB_SUBMIT_URB(pUrb);
	if (ret != 0) {	/* fail */

		RTMP_IRQ_LOCK(&pAd->BulkInLock, IrqFlags);
		pRxContext->InUse = FALSE;
		pRxContext->IRPPending = FALSE;
		pAd->PendingRx--;
		pAd->BulkInReq--;
		RTMP_IRQ_UNLOCK(&pAd->BulkInLock, IrqFlags);
		DBGPRINT(RT_DEBUG_ERROR,
			 ("RTUSBBulkReceive: Submit Rx URB failed %d\n", ret));
	} else {		/* success */
		ASSERT((pRxContext->InUse == pRxContext->IRPPending));
		/*printk("BIDone, Pend=%d,BIIdx=%d,BIRIdx=%d!\n", pAd->PendingRx, pAd->NextRxBulkInIndex, pAd->NextRxBulkInReadIndex); */
	}
}

/*
	========================================================================

	Routine Description:
	USB_RxPacket initializes a URB and uses the Rx IRP to submit it
	to USB. It checks if an Rx Descriptor is available and passes the
	the coresponding buffer to be filled. If no descriptor is available
	fails the request. When setting the completion routine we pass our
	Adapter Object as Context.

	Arguments:

	Return Value:
		TRUE			found matched tuple cache
		FALSE			no matched found

	Note:

	========================================================================
*/
#define fRTMP_ADAPTER_NEED_STOP_RX		\
		(fRTMP_ADAPTER_NIC_NOT_EXIST | fRTMP_ADAPTER_HALT_IN_PROGRESS |	\
		 fRTMP_ADAPTER_RADIO_OFF | fRTMP_ADAPTER_RESET_IN_PROGRESS | \
		 fRTMP_ADAPTER_REMOVE_IN_PROGRESS | fRTMP_ADAPTER_BULKIN_RESET)

#define fRTMP_ADAPTER_NEED_STOP_HANDLE_RX	\
		(fRTMP_ADAPTER_NIC_NOT_EXIST | fRTMP_ADAPTER_HALT_IN_PROGRESS |	\
		 fRTMP_ADAPTER_RADIO_OFF | fRTMP_ADAPTER_RESET_IN_PROGRESS | \
		 fRTMP_ADAPTER_REMOVE_IN_PROGRESS)

void RTUSBBulkReceive(struct rt_rtmp_adapter *pAd)
{
	struct rt_rx_context *pRxContext;
	unsigned long IrqFlags;

	/* sanity check */
	if (RTMP_TEST_FLAG(pAd, fRTMP_ADAPTER_NEED_STOP_HANDLE_RX))
		return;

	while (1) {

		RTMP_IRQ_LOCK(&pAd->BulkInLock, IrqFlags);
		pRxContext = &(pAd->RxContext[pAd->NextRxBulkInReadIndex]);
		if (((pRxContext->InUse == FALSE)
		     && (pRxContext->Readable == TRUE))
		    && (pRxContext->bRxHandling == FALSE)) {
			pRxContext->bRxHandling = TRUE;
			RTMP_IRQ_UNLOCK(&pAd->BulkInLock, IrqFlags);

			/* read RxContext, Since not */
			STARxDoneInterruptHandle(pAd, TRUE);

			/* Finish to handle this bulkIn buffer. */
			RTMP_IRQ_LOCK(&pAd->BulkInLock, IrqFlags);
			pRxContext->BulkInOffset = 0;
			pRxContext->Readable = FALSE;
			pRxContext->bRxHandling = FALSE;
			pAd->ReadPosition = 0;
			pAd->TransferBufferLength = 0;
			INC_RING_INDEX(pAd->NextRxBulkInReadIndex,
				       RX_RING_SIZE);
			RTMP_IRQ_UNLOCK(&pAd->BulkInLock, IrqFlags);

		} else {
			RTMP_IRQ_UNLOCK(&pAd->BulkInLock, IrqFlags);
			break;
		}
	}

	if (!(RTMP_TEST_FLAG(pAd, fRTMP_ADAPTER_NEED_STOP_RX)))
		DoBulkIn(pAd);

}

/*
	========================================================================

	Routine Description:
		This routine process Rx Irp and call rx complete function.

	Arguments:
		DeviceObject	Pointer to the device object for next lower
						device. DeviceObject passed in here belongs to
						the next lower driver in the stack because we
						were invoked via IoCallDriver in USB_RxPacket
						AND it is not OUR device object
	  Irp				Ptr to completed IRP
	  Context			Ptr to our Adapter object (context specified
						in IoSetCompletionRoutine

	Return Value:
		Always returns STATUS_MORE_PROCESSING_REQUIRED

	Note:
		Always returns STATUS_MORE_PROCESSING_REQUIRED
	========================================================================
*/
void RTUSBBulkRxComplete(struct urb *pUrb, struct pt_regs *pt_regs)
{
	/* use a receive tasklet to handle received packets; */
	/* or sometimes hardware IRQ will be disabled here, so we can not */
	/* use spin_lock_bh()/spin_unlock_bh() after IRQ is disabled. :< */
	struct rt_rx_context *pRxContext;
	struct rt_rtmp_adapter *pAd;
	struct os_cookie *pObj;

	pRxContext = (struct rt_rx_context *)pUrb->context;
	pAd = pRxContext->pAd;
	pObj = (struct os_cookie *)pAd->OS_Cookie;

	pObj->rx_done_task.data = (unsigned long)pUrb;
	tasklet_hi_schedule(&pObj->rx_done_task);

}

/*
	========================================================================

	Routine Description:

	Arguments:

	Return Value:

	Note:

	========================================================================
*/
void RTUSBKickBulkOut(struct rt_rtmp_adapter *pAd)
{
	/* BulkIn Reset will reset whole USB PHY. So we need to make sure fRTMP_ADAPTER_BULKIN_RESET not flaged. */
	if (!RTMP_TEST_FLAG(pAd, fRTMP_ADAPTER_NEED_STOP_TX)
	    ) {
		/* 2. PS-Poll frame is next */
		if (RTUSB_TEST_BULK_FLAG(pAd, fRTUSB_BULK_OUT_PSPOLL))
			RTUSBBulkOutPsPoll(pAd);
		/* 5. Mlme frame is next */
		else if ((RTUSB_TEST_BULK_FLAG(pAd, fRTUSB_BULK_OUT_MLME)) ||
			 (pAd->MgmtRing.TxSwFreeIdx < MGMT_RING_SIZE)) {
			RTUSBBulkOutMLMEPacket(pAd, pAd->MgmtRing.TxDmaIdx);
		}
		/* 6. Data frame normal is next */
		if (RTUSB_TEST_BULK_FLAG(pAd, fRTUSB_BULK_OUT_DATA_NORMAL)) {
			if (((!RTMP_TEST_FLAG
			      (pAd, fRTMP_ADAPTER_BSS_SCAN_IN_PROGRESS))
			     ||
			     (!OPSTATUS_TEST_FLAG
			      (pAd, fOP_STATUS_MEDIA_STATE_CONNECTED))
			    )) {
				RTUSBBulkOutDataPacket(pAd, 0,
						       pAd->
						       NextBulkOutIndex[0]);
			}
		}
		if (RTUSB_TEST_BULK_FLAG(pAd, fRTUSB_BULK_OUT_DATA_NORMAL_2)) {
			if (((!RTMP_TEST_FLAG
			      (pAd, fRTMP_ADAPTER_BSS_SCAN_IN_PROGRESS))
			     ||
			     (!OPSTATUS_TEST_FLAG
			      (pAd, fOP_STATUS_MEDIA_STATE_CONNECTED))
			    )) {
				RTUSBBulkOutDataPacket(pAd, 1,
						       pAd->
						       NextBulkOutIndex[1]);
			}
		}
		if (RTUSB_TEST_BULK_FLAG(pAd, fRTUSB_BULK_OUT_DATA_NORMAL_3)) {
			if (((!RTMP_TEST_FLAG
			      (pAd, fRTMP_ADAPTER_BSS_SCAN_IN_PROGRESS))
			     ||
			     (!OPSTATUS_TEST_FLAG
			      (pAd, fOP_STATUS_MEDIA_STATE_CONNECTED))
			    )) {
				RTUSBBulkOutDataPacket(pAd, 2,
						       pAd->
						       NextBulkOutIndex[2]);
			}
		}
		if (RTUSB_TEST_BULK_FLAG(pAd, fRTUSB_BULK_OUT_DATA_NORMAL_4)) {
			if (((!RTMP_TEST_FLAG
			      (pAd, fRTMP_ADAPTER_BSS_SCAN_IN_PROGRESS))
			     ||
			     (!OPSTATUS_TEST_FLAG
			      (pAd, fOP_STATUS_MEDIA_STATE_CONNECTED))
			    )) {
				RTUSBBulkOutDataPacket(pAd, 3,
						       pAd->
						       NextBulkOutIndex[3]);
			}
		}
		/* 7. Null frame is the last */
		else if (RTUSB_TEST_BULK_FLAG(pAd, fRTUSB_BULK_OUT_DATA_NULL)) {
			if (!RTMP_TEST_FLAG
			    (pAd, fRTMP_ADAPTER_BSS_SCAN_IN_PROGRESS)) {
				RTUSBBulkOutNullFrame(pAd);
			}
		}
		/* 8. No data avaliable */
		else
			;
	}
}

/*
	========================================================================

	Routine Description:
	Call from Reset action after BulkOut failed.
	Arguments:

	Return Value:

	Note:

	========================================================================
*/
void RTUSBCleanUpDataBulkOutQueue(struct rt_rtmp_adapter *pAd)
{
	u8 Idx;
	struct rt_ht_tx_context *pTxContext;

	DBGPRINT(RT_DEBUG_TRACE, ("--->CleanUpDataBulkOutQueue\n"));

	for (Idx = 0; Idx < 4; Idx++) {
		pTxContext = &pAd->TxContext[Idx];

		pTxContext->CurWritePosition = pTxContext->NextBulkOutPosition;
		pTxContext->LastOne = FALSE;
		NdisAcquireSpinLock(&pAd->BulkOutLock[Idx]);
		pAd->BulkOutPending[Idx] = FALSE;
		NdisReleaseSpinLock(&pAd->BulkOutLock[Idx]);
	}

	DBGPRINT(RT_DEBUG_TRACE, ("<---CleanUpDataBulkOutQueue\n"));
}

/*
	========================================================================

	Routine Description:

	Arguments:

	Return Value:

	Note:

	========================================================================
*/
void RTUSBCleanUpMLMEBulkOutQueue(struct rt_rtmp_adapter *pAd)
{
	DBGPRINT(RT_DEBUG_TRACE, ("--->CleanUpMLMEBulkOutQueue\n"));
	DBGPRINT(RT_DEBUG_TRACE, ("<---CleanUpMLMEBulkOutQueue\n"));
}

/*
	========================================================================

	Routine Description:

	Arguments:

	Return Value:

	Note:

	========================================================================
*/
void RTUSBCancelPendingIRPs(struct rt_rtmp_adapter *pAd)
{
	RTUSBCancelPendingBulkInIRP(pAd);
	RTUSBCancelPendingBulkOutIRP(pAd);
}

/*
	========================================================================

	Routine Description:

	Arguments:

	Return Value:

	Note:

	========================================================================
*/
void RTUSBCancelPendingBulkInIRP(struct rt_rtmp_adapter *pAd)
{
	struct rt_rx_context *pRxContext;
	u32 i;

	DBGPRINT_RAW(RT_DEBUG_TRACE, ("--->RTUSBCancelPendingBulkInIRP\n"));
	for (i = 0; i < (RX_RING_SIZE); i++) {
		pRxContext = &(pAd->RxContext[i]);
		if (pRxContext->IRPPending == TRUE) {
			RTUSB_UNLINK_URB(pRxContext->pUrb);
			pRxContext->IRPPending = FALSE;
			pRxContext->InUse = FALSE;
			/*NdisInterlockedDecrement(&pAd->PendingRx); */
			/*pAd->PendingRx--; */
		}
	}
	DBGPRINT_RAW(RT_DEBUG_TRACE, ("<---RTUSBCancelPendingBulkInIRP\n"));
}

/*
	========================================================================

	Routine Description:

	Arguments:

	Return Value:

	Note:

	========================================================================
*/
void RTUSBCancelPendingBulkOutIRP(struct rt_rtmp_adapter *pAd)
{
	struct rt_ht_tx_context *pHTTXContext;
	struct rt_tx_context *pMLMEContext;
	struct rt_tx_context *pBeaconContext;
	struct rt_tx_context *pNullContext;
	struct rt_tx_context *pPsPollContext;
	struct rt_tx_context *pRTSContext;
	u32 i, Idx;
/*      unsigned int            IrqFlags; */
/*      spinlock_t          *pLock; */
/*      BOOLEAN                         *pPending; */

/*      pLock = &pAd->BulkOutLock[MGMTPIPEIDX]; */
/*      pPending = &pAd->BulkOutPending[MGMTPIPEIDX]; */

	for (Idx = 0; Idx < 4; Idx++) {
		pHTTXContext = &(pAd->TxContext[Idx]);

		if (pHTTXContext->IRPPending == TRUE) {

			/* Get the USB_CONTEXT and cancel it's IRP; the completion routine will itself */
			/* remove it from the HeadPendingSendList and NULL out HeadPendingSendList */
			/*      when the last IRP on the list has been  cancelled; that's how we exit this loop */
			/* */

			RTUSB_UNLINK_URB(pHTTXContext->pUrb);

			/* Sleep 200 microseconds to give cancellation time to work */
			RTMPusecDelay(200);
		}

		pAd->BulkOutPending[Idx] = FALSE;
	}

	/*RTMP_IRQ_LOCK(pLock, IrqFlags); */
	for (i = 0; i < MGMT_RING_SIZE; i++) {
		pMLMEContext = (struct rt_tx_context *)pAd->MgmtRing.Cell[i].AllocVa;
		if (pMLMEContext && (pMLMEContext->IRPPending == TRUE)) {

			/* Get the USB_CONTEXT and cancel it's IRP; the completion routine will itself */
			/* remove it from the HeadPendingSendList and NULL out HeadPendingSendList */
			/*      when the last IRP on the list has been  cancelled; that's how we exit this loop */
			/* */

			RTUSB_UNLINK_URB(pMLMEContext->pUrb);
			pMLMEContext->IRPPending = FALSE;

			/* Sleep 200 microsecs to give cancellation time to work */
			RTMPusecDelay(200);
		}
	}
	pAd->BulkOutPending[MGMTPIPEIDX] = FALSE;
	/*RTMP_IRQ_UNLOCK(pLock, IrqFlags); */

	for (i = 0; i < BEACON_RING_SIZE; i++) {
		pBeaconContext = &(pAd->BeaconContext[i]);

		if (pBeaconContext->IRPPending == TRUE) {

			/* Get the USB_CONTEXT and cancel it's IRP; the completion routine will itself */
			/* remove it from the HeadPendingSendList and NULL out HeadPendingSendList */
			/*      when the last IRP on the list has been  cancelled; that's how we exit this loop */
			/* */

			RTUSB_UNLINK_URB(pBeaconContext->pUrb);

			/* Sleep 200 microsecs to give cancellation time to work */
			RTMPusecDelay(200);
		}
	}

	pNullContext = &(pAd->NullContext);
	if (pNullContext->IRPPending == TRUE)
		RTUSB_UNLINK_URB(pNullContext->pUrb);

	pRTSContext = &(pAd->RTSContext);
	if (pRTSContext->IRPPending == TRUE)
		RTUSB_UNLINK_URB(pRTSContext->pUrb);

	pPsPollContext = &(pAd->PsPollContext);
	if (pPsPollContext->IRPPending == TRUE)
		RTUSB_UNLINK_URB(pPsPollContext->pUrb);

	for (Idx = 0; Idx < 4; Idx++) {
		NdisAcquireSpinLock(&pAd->BulkOutLock[Idx]);
		pAd->BulkOutPending[Idx] = FALSE;
		NdisReleaseSpinLock(&pAd->BulkOutLock[Idx]);
	}
}

#endif /* RTMP_MAC_USB // */