Staging: add rt2860 wireless driver

This is the Ralink RT2860 driver from the company that does horrible
things like reading a config file from /etc.  However, the driver that
is currently under development from the wireless development community
is not working at all yet, so distros and users are using this version
instead (quite common hardware on a lot of netbook machines).

So here is this driver, for now, until the wireless developers get a
"clean" version into the main tree, or until this version is cleaned up
sufficiently to move out of the staging tree.

Ported to the Linux build system and cleaned up a bit already by me.

Cc: Linux wireless <linux-wireless@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 922 insertions, 0 deletions

diff --git a/drivers/staging/rt2860/common/2860_rtmp_init.c b/drivers/staging/rt2860/common/2860_rtmp_init.c
new file mode 100644
index 000000000000..546f304ec330
--- /dev/null
+++ b/drivers/staging/rt2860/common/2860_rtmp_init.c
@@ -0,0 +1,922 @@
+/*
+ *************************************************************************
+ * 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:
+	2860_rtmp_init.c
+
+	Abstract:
+	Miniport generic portion header file
+
+	Revision History:
+	Who         When          What
+	--------    ----------    ----------------------------------------------
+	Paul Lin    2002-08-01    created
+    John Chang  2004-08-20    RT2561/2661 use scatter-gather scheme
+    Jan Lee  2006-09-15    RT2860. Change for 802.11n , EEPROM, Led, BA, HT.
+*/
+#include "../rt_config.h"
+
+
+
+
+/*
+	========================================================================
+
+	Routine Description:
+		Allocate DMA memory blocks for send, receive
+
+	Arguments:
+		Adapter		Pointer to our adapter
+
+	Return Value:
+		NDIS_STATUS_SUCCESS
+		NDIS_STATUS_FAILURE
+		NDIS_STATUS_RESOURCES
+
+	IRQL = PASSIVE_LEVEL
+
+	Note:
+
+	========================================================================
+*/
+NDIS_STATUS	RTMPAllocTxRxRingMemory(
+	IN	PRTMP_ADAPTER	pAd)
+{
+	NDIS_STATUS		Status = NDIS_STATUS_SUCCESS;
+	ULONG			RingBasePaHigh;
+	ULONG			RingBasePaLow;
+	PVOID			RingBaseVa;
+	INT				index, num;
+	PTXD_STRUC		pTxD;
+	PRXD_STRUC		pRxD;
+	ULONG			ErrorValue = 0;
+	PRTMP_TX_RING	pTxRing;
+	PRTMP_DMABUF	pDmaBuf;
+	PNDIS_PACKET	pPacket;
+
+	DBGPRINT(RT_DEBUG_TRACE, ("--> RTMPAllocTxRxRingMemory\n"));
+	do
+	{
+		//
+		// Allocate all ring descriptors, include TxD, RxD, MgmtD.
+		// Although each size is different, to prevent cacheline and alignment
+		// issue, I intentional set them all to 64 bytes.
+		//
+		for (num=0; num<NUM_OF_TX_RING; num++)
+		{
+			ULONG  BufBasePaHigh;
+			ULONG  BufBasePaLow;
+			PVOID  BufBaseVa;
+
+			//
+			// Allocate Tx ring descriptor's memory (5 TX rings = 4 ACs + 1 HCCA)
+			//
+			pAd->TxDescRing[num].AllocSize = TX_RING_SIZE * TXD_SIZE;
+			RTMP_AllocateTxDescMemory(
+				pAd,
+				num,
+				pAd->TxDescRing[num].AllocSize,
+				FALSE,
+				&pAd->TxDescRing[num].AllocVa,
+				&pAd->TxDescRing[num].AllocPa);
+
+			if (pAd->TxDescRing[num].AllocVa == NULL)
+			{
+				ErrorValue = ERRLOG_OUT_OF_SHARED_MEMORY;
+				DBGPRINT_ERR(("Failed to allocate a big buffer\n"));
+				Status = NDIS_STATUS_RESOURCES;
+				break;
+			}
+
+			// Zero init this memory block
+			NdisZeroMemory(pAd->TxDescRing[num].AllocVa, pAd->TxDescRing[num].AllocSize);
+
+			// Save PA & VA for further operation
+			RingBasePaHigh = RTMP_GetPhysicalAddressHigh(pAd->TxDescRing[num].AllocPa);
+			RingBasePaLow  = RTMP_GetPhysicalAddressLow (pAd->TxDescRing[num].AllocPa);
+			RingBaseVa     = pAd->TxDescRing[num].AllocVa;
+
+			//
+			// Allocate all 1st TXBuf's memory for this TxRing
+			//
+			pAd->TxBufSpace[num].AllocSize = TX_RING_SIZE * TX_DMA_1ST_BUFFER_SIZE;
+			RTMP_AllocateFirstTxBuffer(
+				pAd,
+				num,
+				pAd->TxBufSpace[num].AllocSize,
+				FALSE,
+				&pAd->TxBufSpace[num].AllocVa,
+				&pAd->TxBufSpace[num].AllocPa);
+
+			if (pAd->TxBufSpace[num].AllocVa == NULL)
+			{
+				ErrorValue = ERRLOG_OUT_OF_SHARED_MEMORY;
+				DBGPRINT_ERR(("Failed to allocate a big buffer\n"));
+				Status = NDIS_STATUS_RESOURCES;
+				break;
+			}
+
+			// Zero init this memory block
+			NdisZeroMemory(pAd->TxBufSpace[num].AllocVa, pAd->TxBufSpace[num].AllocSize);
+
+			// Save PA & VA for further operation
+			BufBasePaHigh = RTMP_GetPhysicalAddressHigh(pAd->TxBufSpace[num].AllocPa);
+			BufBasePaLow  = RTMP_GetPhysicalAddressLow (pAd->TxBufSpace[num].AllocPa);
+			BufBaseVa     = pAd->TxBufSpace[num].AllocVa;
+
+			//
+			// Initialize Tx Ring Descriptor and associated buffer memory
+			//
+			pTxRing = &pAd->TxRing[num];
+			for (index = 0; index < TX_RING_SIZE; index++)
+			{
+				pTxRing->Cell[index].pNdisPacket = NULL;
+				pTxRing->Cell[index].pNextNdisPacket = NULL;
+				// Init Tx Ring Size, Va, Pa variables
+				pTxRing->Cell[index].AllocSize = TXD_SIZE;
+				pTxRing->Cell[index].AllocVa = RingBaseVa;
+				RTMP_SetPhysicalAddressHigh(pTxRing->Cell[index].AllocPa, RingBasePaHigh);
+				RTMP_SetPhysicalAddressLow (pTxRing->Cell[index].AllocPa, RingBasePaLow);
+
+				// Setup Tx Buffer size & address. only 802.11 header will store in this space
+				pDmaBuf = &pTxRing->Cell[index].DmaBuf;
+				pDmaBuf->AllocSize = TX_DMA_1ST_BUFFER_SIZE;
+				pDmaBuf->AllocVa = BufBaseVa;
+				RTMP_SetPhysicalAddressHigh(pDmaBuf->AllocPa, BufBasePaHigh);
+				RTMP_SetPhysicalAddressLow(pDmaBuf->AllocPa, BufBasePaLow);
+
+				// link the pre-allocated TxBuf to TXD
+				pTxD = (PTXD_STRUC) pTxRing->Cell[index].AllocVa;
+				pTxD->SDPtr0 = BufBasePaLow;
+				// advance to next ring descriptor address
+				pTxD->DMADONE = 1;
+#ifdef RT_BIG_ENDIAN
+				RTMPDescriptorEndianChange((PUCHAR)pTxD, TYPE_TXD);
+#endif
+				RingBasePaLow += TXD_SIZE;
+				RingBaseVa = (PUCHAR) RingBaseVa + TXD_SIZE;
+
+				// advance to next TxBuf address
+				BufBasePaLow += TX_DMA_1ST_BUFFER_SIZE;
+				BufBaseVa = (PUCHAR) BufBaseVa + TX_DMA_1ST_BUFFER_SIZE;
+			}
+			DBGPRINT(RT_DEBUG_TRACE, ("TxRing[%d]: total %d entry allocated\n", num, index));
+		}
+		if (Status == NDIS_STATUS_RESOURCES)
+			break;
+
+		//
+		// Allocate MGMT ring descriptor's memory except Tx ring which allocated eariler
+		//
+		pAd->MgmtDescRing.AllocSize = MGMT_RING_SIZE * TXD_SIZE;
+		RTMP_AllocateMgmtDescMemory(
+			pAd,
+			pAd->MgmtDescRing.AllocSize,
+			FALSE,
+			&pAd->MgmtDescRing.AllocVa,
+			&pAd->MgmtDescRing.AllocPa);
+
+		if (pAd->MgmtDescRing.AllocVa == NULL)
+		{
+			ErrorValue = ERRLOG_OUT_OF_SHARED_MEMORY;
+			DBGPRINT_ERR(("Failed to allocate a big buffer\n"));
+			Status = NDIS_STATUS_RESOURCES;
+			break;
+		}
+
+		// Zero init this memory block
+		NdisZeroMemory(pAd->MgmtDescRing.AllocVa, pAd->MgmtDescRing.AllocSize);
+
+		// Save PA & VA for further operation
+		RingBasePaHigh = RTMP_GetPhysicalAddressHigh(pAd->MgmtDescRing.AllocPa);
+		RingBasePaLow  = RTMP_GetPhysicalAddressLow (pAd->MgmtDescRing.AllocPa);
+		RingBaseVa     = pAd->MgmtDescRing.AllocVa;
+
+		//
+		// Initialize MGMT Ring and associated buffer memory
+		//
+		for (index = 0; index < MGMT_RING_SIZE; index++)
+		{
+			pAd->MgmtRing.Cell[index].pNdisPacket = NULL;
+			pAd->MgmtRing.Cell[index].pNextNdisPacket = NULL;
+			// Init MGMT Ring Size, Va, Pa variables
+			pAd->MgmtRing.Cell[index].AllocSize = TXD_SIZE;
+			pAd->MgmtRing.Cell[index].AllocVa = RingBaseVa;
+			RTMP_SetPhysicalAddressHigh(pAd->MgmtRing.Cell[index].AllocPa, RingBasePaHigh);
+			RTMP_SetPhysicalAddressLow (pAd->MgmtRing.Cell[index].AllocPa, RingBasePaLow);
+
+			// Offset to next ring descriptor address
+			RingBasePaLow += TXD_SIZE;
+			RingBaseVa = (PUCHAR) RingBaseVa + TXD_SIZE;
+
+			// link the pre-allocated TxBuf to TXD
+			pTxD = (PTXD_STRUC) pAd->MgmtRing.Cell[index].AllocVa;
+			pTxD->DMADONE = 1;
+
+#ifdef RT_BIG_ENDIAN
+			RTMPDescriptorEndianChange((PUCHAR)pTxD, TYPE_TXD);
+#endif
+			// no pre-allocated buffer required in MgmtRing for scatter-gather case
+		}
+		DBGPRINT(RT_DEBUG_TRACE, ("MGMT Ring: total %d entry allocated\n", index));
+
+		//
+		// Allocate RX ring descriptor's memory except Tx ring which allocated eariler
+		//
+		pAd->RxDescRing.AllocSize = RX_RING_SIZE * RXD_SIZE;
+		RTMP_AllocateRxDescMemory(
+			pAd,
+			pAd->RxDescRing.AllocSize,
+			FALSE,
+			&pAd->RxDescRing.AllocVa,
+			&pAd->RxDescRing.AllocPa);
+
+		if (pAd->RxDescRing.AllocVa == NULL)
+		{
+			ErrorValue = ERRLOG_OUT_OF_SHARED_MEMORY;
+			DBGPRINT_ERR(("Failed to allocate a big buffer\n"));
+			Status = NDIS_STATUS_RESOURCES;
+			break;
+		}
+
+		// Zero init this memory block
+		NdisZeroMemory(pAd->RxDescRing.AllocVa, pAd->RxDescRing.AllocSize);
+
+
+		printk("RX DESC %p  size = %ld\n", pAd->RxDescRing.AllocVa,
+					pAd->RxDescRing.AllocSize);
+
+		// Save PA & VA for further operation
+		RingBasePaHigh = RTMP_GetPhysicalAddressHigh(pAd->RxDescRing.AllocPa);
+		RingBasePaLow  = RTMP_GetPhysicalAddressLow (pAd->RxDescRing.AllocPa);
+		RingBaseVa     = pAd->RxDescRing.AllocVa;
+
+		//
+		// Initialize Rx Ring and associated buffer memory
+		//
+		for (index = 0; index < RX_RING_SIZE; index++)
+		{
+			// Init RX Ring Size, Va, Pa variables
+			pAd->RxRing.Cell[index].AllocSize = RXD_SIZE;
+			pAd->RxRing.Cell[index].AllocVa = RingBaseVa;
+			RTMP_SetPhysicalAddressHigh(pAd->RxRing.Cell[index].AllocPa, RingBasePaHigh);
+			RTMP_SetPhysicalAddressLow (pAd->RxRing.Cell[index].AllocPa, RingBasePaLow);
+
+			// Offset to next ring descriptor address
+			RingBasePaLow += RXD_SIZE;
+			RingBaseVa = (PUCHAR) RingBaseVa + RXD_SIZE;
+
+			// Setup Rx associated Buffer size & allocate share memory
+			pDmaBuf = &pAd->RxRing.Cell[index].DmaBuf;
+			pDmaBuf->AllocSize = RX_BUFFER_AGGRESIZE;
+			pPacket = RTMP_AllocateRxPacketBuffer(
+				pAd,
+				pDmaBuf->AllocSize,
+				FALSE,
+				&pDmaBuf->AllocVa,
+				&pDmaBuf->AllocPa);
+
+			/* keep allocated rx packet */
+			pAd->RxRing.Cell[index].pNdisPacket = pPacket;
+
+			// Error handling
+			if (pDmaBuf->AllocVa == NULL)
+			{
+				ErrorValue = ERRLOG_OUT_OF_SHARED_MEMORY;
+				DBGPRINT_ERR(("Failed to allocate RxRing's 1st buffer\n"));
+				Status = NDIS_STATUS_RESOURCES;
+				break;
+			}
+
+			// Zero init this memory block
+			NdisZeroMemory(pDmaBuf->AllocVa, pDmaBuf->AllocSize);
+
+			// Write RxD buffer address & allocated buffer length
+			pRxD = (PRXD_STRUC) pAd->RxRing.Cell[index].AllocVa;
+			pRxD->SDP0 = RTMP_GetPhysicalAddressLow(pDmaBuf->AllocPa);
+			pRxD->DDONE = 0;
+
+#ifdef RT_BIG_ENDIAN
+			RTMPDescriptorEndianChange((PUCHAR)pRxD, TYPE_RXD);
+#endif
+		}
+
+		DBGPRINT(RT_DEBUG_TRACE, ("Rx Ring: total %d entry allocated\n", index));
+
+	}	while (FALSE);
+
+
+	NdisZeroMemory(&pAd->FragFrame, sizeof(FRAGMENT_FRAME));
+	pAd->FragFrame.pFragPacket =  RTMP_AllocateFragPacketBuffer(pAd, RX_BUFFER_NORMSIZE);
+
+	if (pAd->FragFrame.pFragPacket == NULL)
+	{
+		Status = NDIS_STATUS_RESOURCES;
+	}
+
+	if (Status != NDIS_STATUS_SUCCESS)
+	{
+		// Log error inforamtion
+		NdisWriteErrorLogEntry(
+			pAd->AdapterHandle,
+			NDIS_ERROR_CODE_OUT_OF_RESOURCES,
+			1,
+			ErrorValue);
+	}
+
+	DBGPRINT_S(Status, ("<-- RTMPAllocTxRxRingMemory, Status=%x\n", Status));
+	return Status;
+}
+
+
+/*
+	========================================================================
+
+	Routine Description:
+		Initialize transmit data structures
+
+	Arguments:
+		Adapter						Pointer to our adapter
+
+	Return Value:
+		None
+
+	IRQL = PASSIVE_LEVEL
+
+	Note:
+		Initialize all transmit releated private buffer, include those define
+		in RTMP_ADAPTER structure and all private data structures.
+
+	========================================================================
+*/
+VOID	NICInitTxRxRingAndBacklogQueue(
+	IN	PRTMP_ADAPTER	pAd)
+{
+	//WPDMA_GLO_CFG_STRUC	GloCfg;
+	int i;
+
+	DBGPRINT(RT_DEBUG_TRACE, ("<--> NICInitTxRxRingAndBacklogQueue\n"));
+
+	// Initialize all transmit related software queues
+	InitializeQueueHeader(&pAd->TxSwQueue[QID_AC_BE]);
+	InitializeQueueHeader(&pAd->TxSwQueue[QID_AC_BK]);
+	InitializeQueueHeader(&pAd->TxSwQueue[QID_AC_VI]);
+	InitializeQueueHeader(&pAd->TxSwQueue[QID_AC_VO]);
+	InitializeQueueHeader(&pAd->TxSwQueue[QID_HCCA]);
+
+	// Init RX Ring index pointer
+	pAd->RxRing.RxSwReadIdx = 0;
+	pAd->RxRing.RxCpuIdx = RX_RING_SIZE - 1;
+
+	// Init TX rings index pointer
+		for (i=0; i<NUM_OF_TX_RING; i++)
+		{
+			pAd->TxRing[i].TxSwFreeIdx = 0;
+			pAd->TxRing[i].TxCpuIdx = 0;
+		}
+
+	// init MGMT ring index pointer
+	pAd->MgmtRing.TxSwFreeIdx = 0;
+	pAd->MgmtRing.TxCpuIdx = 0;
+
+	pAd->PrivateInfo.TxRingFullCnt       = 0;
+}
+
+
+/*
+	========================================================================
+
+	Routine Description:
+		Reset NIC Asics. Call after rest DMA. So reset TX_CTX_IDX to zero.
+
+	Arguments:
+		Adapter						Pointer to our adapter
+
+	Return Value:
+		None
+
+	IRQL = PASSIVE_LEVEL
+	IRQL = DISPATCH_LEVEL
+
+	Note:
+		Reset NIC to initial state AS IS system boot up time.
+
+	========================================================================
+*/
+VOID	RTMPRingCleanUp(
+	IN	PRTMP_ADAPTER	pAd,
+	IN	UCHAR			RingType)
+{
+	PTXD_STRUC		pTxD;
+	PRXD_STRUC		pRxD;
+	PQUEUE_ENTRY	pEntry;
+	PNDIS_PACKET	pPacket;
+	int				i;
+	PRTMP_TX_RING	pTxRing;
+	unsigned long	IrqFlags;
+
+	DBGPRINT(RT_DEBUG_TRACE,("RTMPRingCleanUp(RingIdx=%d, Pending-NDIS=%ld)\n", RingType, pAd->RalinkCounters.PendingNdisPacketCount));
+	switch (RingType)
+	{
+		case QID_AC_BK:
+		case QID_AC_BE:
+		case QID_AC_VI:
+		case QID_AC_VO:
+		case QID_HCCA:
+			RTMP_IRQ_LOCK(&pAd->irq_lock, IrqFlags);
+			pTxRing = &pAd->TxRing[RingType];
+
+			// We have to clean all descriptors in case some error happened with reset
+			for (i=0; i<TX_RING_SIZE; i++) // We have to scan all TX ring
+			{
+				pTxD  = (PTXD_STRUC) pTxRing->Cell[i].AllocVa;
+
+				pPacket = (PNDIS_PACKET) pTxRing->Cell[i].pNdisPacket;
+				// release scatter-and-gather NDIS_PACKET
+				if (pPacket)
+				{
+					RELEASE_NDIS_PACKET(pAd, pPacket, NDIS_STATUS_FAILURE);
+					pTxRing->Cell[i].pNdisPacket = NULL;
+				}
+
+				pPacket = (PNDIS_PACKET) pTxRing->Cell[i].pNextNdisPacket;
+				// release scatter-and-gather NDIS_PACKET
+				if (pPacket)
+				{
+					RELEASE_NDIS_PACKET(pAd, pPacket, NDIS_STATUS_FAILURE);
+					pTxRing->Cell[i].pNextNdisPacket = NULL;
+				}
+			}
+
+			RTMP_IO_READ32(pAd, TX_DTX_IDX0 + RingType * 0x10, &pTxRing->TxDmaIdx);
+			pTxRing->TxSwFreeIdx = pTxRing->TxDmaIdx;
+			pTxRing->TxCpuIdx = pTxRing->TxDmaIdx;
+			RTMP_IO_WRITE32(pAd, TX_CTX_IDX0 + RingType * 0x10, pTxRing->TxCpuIdx);
+
+			RTMP_IRQ_UNLOCK(&pAd->irq_lock, IrqFlags);
+			RTMP_IRQ_LOCK(&pAd->irq_lock, IrqFlags);
+			while (pAd->TxSwQueue[RingType].Head != NULL)
+			{
+				pEntry = RemoveHeadQueue(&pAd->TxSwQueue[RingType]);
+				pPacket = QUEUE_ENTRY_TO_PACKET(pEntry);
+				RELEASE_NDIS_PACKET(pAd, pPacket, NDIS_STATUS_FAILURE);
+				DBGPRINT(RT_DEBUG_TRACE,("Release 1 NDIS packet from s/w backlog queue\n"));
+			}
+			RTMP_IRQ_UNLOCK(&pAd->irq_lock, IrqFlags);
+			break;
+
+		case QID_MGMT:
+			// We have to clean all descriptors in case some error happened with reset
+			NdisAcquireSpinLock(&pAd->MgmtRingLock);
+
+			for (i=0; i<MGMT_RING_SIZE; i++)
+			{
+				pTxD  = (PTXD_STRUC) pAd->MgmtRing.Cell[i].AllocVa;
+
+				pPacket = (PNDIS_PACKET) pAd->MgmtRing.Cell[i].pNdisPacket;
+				// rlease scatter-and-gather NDIS_PACKET
+				if (pPacket)
+				{
+					PCI_UNMAP_SINGLE(pAd, pTxD->SDPtr0, pTxD->SDLen0, PCI_DMA_TODEVICE);
+					RELEASE_NDIS_PACKET(pAd, pPacket, NDIS_STATUS_FAILURE);
+				}
+				pAd->MgmtRing.Cell[i].pNdisPacket = NULL;
+
+				pPacket = (PNDIS_PACKET) pAd->MgmtRing.Cell[i].pNextNdisPacket;
+				// release scatter-and-gather NDIS_PACKET
+				if (pPacket)
+				{
+					PCI_UNMAP_SINGLE(pAd, pTxD->SDPtr1, pTxD->SDLen1, PCI_DMA_TODEVICE);
+					RELEASE_NDIS_PACKET(pAd, pPacket, NDIS_STATUS_FAILURE);
+				}
+				pAd->MgmtRing.Cell[i].pNextNdisPacket = NULL;
+
+			}
+
+			RTMP_IO_READ32(pAd, TX_MGMTDTX_IDX, &pAd->MgmtRing.TxDmaIdx);
+			pAd->MgmtRing.TxSwFreeIdx = pAd->MgmtRing.TxDmaIdx;
+			pAd->MgmtRing.TxCpuIdx = pAd->MgmtRing.TxDmaIdx;
+			RTMP_IO_WRITE32(pAd, TX_MGMTCTX_IDX, pAd->MgmtRing.TxCpuIdx);
+
+			NdisReleaseSpinLock(&pAd->MgmtRingLock);
+			pAd->RalinkCounters.MgmtRingFullCount = 0;
+			break;
+
+		case QID_RX:
+			// We have to clean all descriptors in case some error happened with reset
+			NdisAcquireSpinLock(&pAd->RxRingLock);
+
+			for (i=0; i<RX_RING_SIZE; i++)
+			{
+				pRxD  = (PRXD_STRUC) pAd->RxRing.Cell[i].AllocVa;
+				pRxD->DDONE = 0 ;
+			}
+
+			RTMP_IO_READ32(pAd, RX_DRX_IDX, &pAd->RxRing.RxDmaIdx);
+			pAd->RxRing.RxSwReadIdx = pAd->RxRing.RxDmaIdx;
+			pAd->RxRing.RxCpuIdx = ((pAd->RxRing.RxDmaIdx == 0) ? (RX_RING_SIZE-1) : (pAd->RxRing.RxDmaIdx-1));
+			RTMP_IO_WRITE32(pAd, RX_CRX_IDX, pAd->RxRing.RxCpuIdx);
+
+			NdisReleaseSpinLock(&pAd->RxRingLock);
+			break;
+
+		default:
+			break;
+	}
+}
+
+
+NDIS_STATUS AdapterBlockAllocateMemory(
+	IN PVOID	handle,
+	OUT	PVOID	*ppAd)
+{
+	PPCI_DEV pci_dev;
+	dma_addr_t	*phy_addr;
+	POS_COOKIE pObj = (POS_COOKIE) handle;
+
+	pci_dev = pObj->pci_dev;
+	phy_addr = &pObj->pAd_pa;
+
+	*ppAd = (PVOID)vmalloc(sizeof(RTMP_ADAPTER)); //pci_alloc_consistent(pci_dev, sizeof(RTMP_ADAPTER), phy_addr);
+
+	if (*ppAd)
+	{
+		NdisZeroMemory(*ppAd, sizeof(RTMP_ADAPTER));
+		((PRTMP_ADAPTER)*ppAd)->OS_Cookie = handle;
+		return (NDIS_STATUS_SUCCESS);
+	} else {
+		return (NDIS_STATUS_FAILURE);
+	}
+}
+
+
+void RTMP_AllocateTxDescMemory(
+	IN	PRTMP_ADAPTER pAd,
+	IN	UINT	Index,
+	IN	ULONG	Length,
+	IN	BOOLEAN	Cached,
+	OUT	PVOID	*VirtualAddress,
+	OUT	PNDIS_PHYSICAL_ADDRESS PhysicalAddress)
+{
+	POS_COOKIE pObj = (POS_COOKIE)pAd->OS_Cookie;
+
+	*VirtualAddress = (PVOID)PCI_ALLOC_CONSISTENT(pObj->pci_dev,sizeof(char)*Length, PhysicalAddress);
+
+}
+
+void RTMP_AllocateMgmtDescMemory(
+	IN	PRTMP_ADAPTER pAd,
+	IN	ULONG	Length,
+	IN	BOOLEAN	Cached,
+	OUT	PVOID	*VirtualAddress,
+	OUT	PNDIS_PHYSICAL_ADDRESS PhysicalAddress)
+{
+	POS_COOKIE pObj = (POS_COOKIE)pAd->OS_Cookie;
+
+	*VirtualAddress = (PVOID)PCI_ALLOC_CONSISTENT(pObj->pci_dev,sizeof(char)*Length, PhysicalAddress);
+
+}
+
+void RTMP_AllocateRxDescMemory(
+	IN	PRTMP_ADAPTER pAd,
+	IN	ULONG	Length,
+	IN	BOOLEAN	Cached,
+	OUT	PVOID	*VirtualAddress,
+	OUT	PNDIS_PHYSICAL_ADDRESS PhysicalAddress)
+{
+	POS_COOKIE pObj = (POS_COOKIE)pAd->OS_Cookie;
+
+	*VirtualAddress = (PVOID)PCI_ALLOC_CONSISTENT(pObj->pci_dev,sizeof(char)*Length, PhysicalAddress);
+
+}
+
+void RTMP_FreeRxDescMemory(
+	IN	PRTMP_ADAPTER pAd,
+	IN	ULONG	Length,
+	IN	PVOID	VirtualAddress,
+	IN	NDIS_PHYSICAL_ADDRESS PhysicalAddress)
+{
+	POS_COOKIE pObj = (POS_COOKIE)pAd->OS_Cookie;
+
+	PCI_FREE_CONSISTENT(pObj->pci_dev, Length, VirtualAddress, PhysicalAddress);
+}
+
+
+void RTMP_AllocateFirstTxBuffer(
+	IN	PRTMP_ADAPTER pAd,
+	IN	UINT	Index,
+	IN	ULONG	Length,
+	IN	BOOLEAN	Cached,
+	OUT	PVOID	*VirtualAddress,
+	OUT	PNDIS_PHYSICAL_ADDRESS PhysicalAddress)
+{
+	POS_COOKIE pObj = (POS_COOKIE)pAd->OS_Cookie;
+
+	*VirtualAddress = (PVOID)PCI_ALLOC_CONSISTENT(pObj->pci_dev,sizeof(char)*Length, PhysicalAddress);
+}
+
+/*
+ * FUNCTION: Allocate a common buffer for DMA
+ * ARGUMENTS:
+ *     AdapterHandle:  AdapterHandle
+ *     Length:  Number of bytes to allocate
+ *     Cached:  Whether or not the memory can be cached
+ *     VirtualAddress:  Pointer to memory is returned here
+ *     PhysicalAddress:  Physical address corresponding to virtual address
+ */
+
+void RTMP_AllocateSharedMemory(
+	IN	PRTMP_ADAPTER pAd,
+	IN	ULONG	Length,
+	IN	BOOLEAN	Cached,
+	OUT	PVOID	*VirtualAddress,
+	OUT	PNDIS_PHYSICAL_ADDRESS PhysicalAddress)
+{
+	POS_COOKIE pObj = (POS_COOKIE)pAd->OS_Cookie;
+
+	*VirtualAddress = (PVOID)PCI_ALLOC_CONSISTENT(pObj->pci_dev,sizeof(char)*Length, PhysicalAddress);
+}
+
+VOID RTMPFreeTxRxRingMemory(
+    IN  PRTMP_ADAPTER   pAd)
+{
+	int index, num , j;
+	PRTMP_TX_RING pTxRing;
+	PTXD_STRUC	  pTxD;
+	PNDIS_PACKET  pPacket;
+	unsigned int  IrqFlags;
+
+	POS_COOKIE pObj =(POS_COOKIE) pAd->OS_Cookie;
+
+	DBGPRINT(RT_DEBUG_TRACE, ("--> RTMPFreeTxRxRingMemory\n"));
+
+	// Free TxSwQueue Packet
+	for (index=0; index <NUM_OF_TX_RING; index++)
+	{
+		PQUEUE_ENTRY pEntry;
+		PNDIS_PACKET pPacket;
+		PQUEUE_HEADER   pQueue;
+
+		RTMP_IRQ_LOCK(&pAd->irq_lock, IrqFlags);
+		pQueue = &pAd->TxSwQueue[index];
+		while (pQueue->Head)
+		{
+			pEntry = RemoveHeadQueue(pQueue);
+			pPacket = QUEUE_ENTRY_TO_PACKET(pEntry);
+			RELEASE_NDIS_PACKET(pAd, pPacket, NDIS_STATUS_FAILURE);
+		}
+		RTMP_IRQ_UNLOCK(&pAd->irq_lock, IrqFlags);
+	}
+
+	// Free Tx Ring Packet
+	for (index=0;index< NUM_OF_TX_RING;index++)
+	{
+		pTxRing = &pAd->TxRing[index];
+
+		for (j=0; j< TX_RING_SIZE; j++)
+		{
+			pTxD = (PTXD_STRUC) (pTxRing->Cell[j].AllocVa);
+			pPacket = pTxRing->Cell[j].pNdisPacket;
+
+			if (pPacket)
+			{
+            	PCI_UNMAP_SINGLE(pAd, pTxD->SDPtr0, pTxD->SDLen0, PCI_DMA_TODEVICE);
+				RELEASE_NDIS_PACKET(pAd, pPacket, NDIS_STATUS_SUCCESS);
+			}
+			//Always assign pNdisPacket as NULL after clear
+			pTxRing->Cell[j].pNdisPacket = NULL;
+
+			pPacket = pTxRing->Cell[j].pNextNdisPacket;
+
+			if (pPacket)
+			{
+            	PCI_UNMAP_SINGLE(pAd, pTxD->SDPtr1, pTxD->SDLen1, PCI_DMA_TODEVICE);
+				RELEASE_NDIS_PACKET(pAd, pPacket, NDIS_STATUS_SUCCESS);
+			}
+			//Always assign pNextNdisPacket as NULL after clear
+			pTxRing->Cell[pTxRing->TxSwFreeIdx].pNextNdisPacket = NULL;
+
+		}
+	}
+
+	for (index = RX_RING_SIZE - 1 ; index >= 0; index--)
+	{
+		if ((pAd->RxRing.Cell[index].DmaBuf.AllocVa) && (pAd->RxRing.Cell[index].pNdisPacket))
+		{
+			PCI_UNMAP_SINGLE(pObj->pci_dev, pAd->RxRing.Cell[index].DmaBuf.AllocPa, pAd->RxRing.Cell[index].DmaBuf.AllocSize, PCI_DMA_FROMDEVICE);
+			RELEASE_NDIS_PACKET(pAd, pAd->RxRing.Cell[index].pNdisPacket, NDIS_STATUS_SUCCESS);
+		}
+	}
+	NdisZeroMemory(pAd->RxRing.Cell, RX_RING_SIZE * sizeof(RTMP_DMACB));
+
+	if (pAd->RxDescRing.AllocVa)
+    {
+    	PCI_FREE_CONSISTENT(pObj->pci_dev, pAd->RxDescRing.AllocSize, pAd->RxDescRing.AllocVa, pAd->RxDescRing.AllocPa);
+    }
+    NdisZeroMemory(&pAd->RxDescRing, sizeof(RTMP_DMABUF));
+
+	if (pAd->MgmtDescRing.AllocVa)
+	{
+		PCI_FREE_CONSISTENT(pObj->pci_dev, pAd->MgmtDescRing.AllocSize,	pAd->MgmtDescRing.AllocVa, pAd->MgmtDescRing.AllocPa);
+	}
+	NdisZeroMemory(&pAd->MgmtDescRing, sizeof(RTMP_DMABUF));
+
+	for (num = 0; num < NUM_OF_TX_RING; num++)
+	{
+    	if (pAd->TxBufSpace[num].AllocVa)
+	    {
+	    	PCI_FREE_CONSISTENT(pObj->pci_dev, pAd->TxBufSpace[num].AllocSize, pAd->TxBufSpace[num].AllocVa, pAd->TxBufSpace[num].AllocPa);
+	    }
+	    NdisZeroMemory(&pAd->TxBufSpace[num], sizeof(RTMP_DMABUF));
+
+    	if (pAd->TxDescRing[num].AllocVa)
+	    {
+	    	PCI_FREE_CONSISTENT(pObj->pci_dev, pAd->TxDescRing[num].AllocSize, pAd->TxDescRing[num].AllocVa, pAd->TxDescRing[num].AllocPa);
+	    }
+	    NdisZeroMemory(&pAd->TxDescRing[num], sizeof(RTMP_DMABUF));
+	}
+
+	if (pAd->FragFrame.pFragPacket)
+		RELEASE_NDIS_PACKET(pAd, pAd->FragFrame.pFragPacket, NDIS_STATUS_SUCCESS);
+
+	DBGPRINT(RT_DEBUG_TRACE, ("<-- RTMPFreeTxRxRingMemory\n"));
+}
+
+
+/*
+ * FUNCTION: Allocate a packet buffer for DMA
+ * ARGUMENTS:
+ *     AdapterHandle:  AdapterHandle
+ *     Length:  Number of bytes to allocate
+ *     Cached:  Whether or not the memory can be cached
+ *     VirtualAddress:  Pointer to memory is returned here
+ *     PhysicalAddress:  Physical address corresponding to virtual address
+ * Notes:
+ *     Cached is ignored: always cached memory
+ */
+PNDIS_PACKET RTMP_AllocateRxPacketBuffer(
+	IN	PRTMP_ADAPTER pAd,
+	IN	ULONG	Length,
+	IN	BOOLEAN	Cached,
+	OUT	PVOID	*VirtualAddress,
+	OUT	PNDIS_PHYSICAL_ADDRESS PhysicalAddress)
+{
+	PNDIS_PACKET pkt;
+
+	pkt = RTPKT_TO_OSPKT(DEV_ALLOC_SKB(Length));
+
+	if (pkt == NULL) {
+		DBGPRINT(RT_DEBUG_ERROR, ("can't allocate rx %ld size packet\n",Length));
+	}
+
+	if (pkt) {
+		RTMP_SET_PACKET_SOURCE(pkt, PKTSRC_NDIS);
+		*VirtualAddress = (PVOID) RTPKT_TO_OSPKT(pkt)->data;
+		*PhysicalAddress = PCI_MAP_SINGLE(pAd, *VirtualAddress, Length, -1, PCI_DMA_FROMDEVICE);
+	} else {
+		*VirtualAddress = (PVOID) NULL;
+		*PhysicalAddress = (NDIS_PHYSICAL_ADDRESS) NULL;
+	}
+
+	return (PNDIS_PACKET) pkt;
+}
+
+
+VOID Invalid_Remaining_Packet(
+	IN	PRTMP_ADAPTER pAd,
+	IN	 ULONG VirtualAddress)
+{
+	NDIS_PHYSICAL_ADDRESS PhysicalAddress;
+
+	PhysicalAddress = PCI_MAP_SINGLE(pAd, (void *)(VirtualAddress+1600), RX_BUFFER_NORMSIZE-1600, -1, PCI_DMA_FROMDEVICE);
+}
+
+PNDIS_PACKET GetPacketFromRxRing(
+	IN		PRTMP_ADAPTER	pAd,
+	OUT		PRT28XX_RXD_STRUC	pSaveRxD,
+	OUT		BOOLEAN			*pbReschedule,
+	IN OUT	UINT32			*pRxPending)
+{
+	PRXD_STRUC				pRxD;
+#ifdef RT_BIG_ENDIAN
+	PRXD_STRUC				pDestRxD;
+	RXD_STRUC				RxD;
+#endif
+	PNDIS_PACKET			pRxPacket = NULL;
+	PNDIS_PACKET			pNewPacket;
+	PVOID					AllocVa;
+	NDIS_PHYSICAL_ADDRESS	AllocPa;
+	BOOLEAN					bReschedule = FALSE;
+
+	RTMP_SEM_LOCK(&pAd->RxRingLock);
+
+	if (*pRxPending == 0)
+	{
+		// Get how may packets had been received
+		RTMP_IO_READ32(pAd, RX_DRX_IDX , &pAd->RxRing.RxDmaIdx);
+
+		if (pAd->RxRing.RxSwReadIdx == pAd->RxRing.RxDmaIdx)
+		{
+			// no more rx packets
+			bReschedule = FALSE;
+			goto done;
+		}
+
+		// get rx pending count
+		if (pAd->RxRing.RxDmaIdx > pAd->RxRing.RxSwReadIdx)
+			*pRxPending = pAd->RxRing.RxDmaIdx - pAd->RxRing.RxSwReadIdx;
+		else
+			*pRxPending	= pAd->RxRing.RxDmaIdx + RX_RING_SIZE - pAd->RxRing.RxSwReadIdx;
+
+	}
+
+#ifdef RT_BIG_ENDIAN
+	pDestRxD = (PRXD_STRUC) pAd->RxRing.Cell[pAd->RxRing.RxSwReadIdx].AllocVa;
+	RxD = *pDestRxD;
+	pRxD = &RxD;
+	RTMPDescriptorEndianChange((PUCHAR)pRxD, TYPE_RXD);
+#else
+	// Point to Rx indexed rx ring descriptor
+	pRxD = (PRXD_STRUC) pAd->RxRing.Cell[pAd->RxRing.RxSwReadIdx].AllocVa;
+#endif
+
+	if (pRxD->DDONE == 0)
+	{
+		*pRxPending = 0;
+		// DMAIndx had done but DDONE bit not ready
+		bReschedule = TRUE;
+		goto done;
+	}
+
+
+	// return rx descriptor
+	NdisMoveMemory(pSaveRxD, pRxD, RXD_SIZE);
+
+	pNewPacket = RTMP_AllocateRxPacketBuffer(pAd, RX_BUFFER_AGGRESIZE, FALSE, &AllocVa, &AllocPa);
+
+	if (pNewPacket)
+	{
+		// unmap the rx buffer
+		PCI_UNMAP_SINGLE(pAd, pAd->RxRing.Cell[pAd->RxRing.RxSwReadIdx].DmaBuf.AllocPa,
+					 pAd->RxRing.Cell[pAd->RxRing.RxSwReadIdx].DmaBuf.AllocSize, PCI_DMA_FROMDEVICE);
+		pRxPacket = pAd->RxRing.Cell[pAd->RxRing.RxSwReadIdx].pNdisPacket;
+
+		pAd->RxRing.Cell[pAd->RxRing.RxSwReadIdx].DmaBuf.AllocSize	= RX_BUFFER_AGGRESIZE;
+		pAd->RxRing.Cell[pAd->RxRing.RxSwReadIdx].pNdisPacket		= (PNDIS_PACKET) pNewPacket;
+		pAd->RxRing.Cell[pAd->RxRing.RxSwReadIdx].DmaBuf.AllocVa	= AllocVa;
+		pAd->RxRing.Cell[pAd->RxRing.RxSwReadIdx].DmaBuf.AllocPa	= AllocPa;
+		/* update SDP0 to new buffer of rx packet */
+		pRxD->SDP0 = AllocPa;
+	}
+	else
+	{
+		//printk("No Rx Buffer\n");
+		pRxPacket = NULL;
+		bReschedule = TRUE;
+	}
+
+	pRxD->DDONE = 0;
+
+	// had handled one rx packet
+	*pRxPending = *pRxPending - 1;
+
+	// update rx descriptor and kick rx
+#ifdef RT_BIG_ENDIAN
+	RTMPDescriptorEndianChange((PUCHAR)pRxD, TYPE_RXD);
+	WriteBackToDescriptor((PUCHAR)pDestRxD, (PUCHAR)pRxD, FALSE, TYPE_RXD);
+#endif
+	INC_RING_INDEX(pAd->RxRing.RxSwReadIdx, RX_RING_SIZE);
+
+	pAd->RxRing.RxCpuIdx = (pAd->RxRing.RxSwReadIdx == 0) ? (RX_RING_SIZE-1) : (pAd->RxRing.RxSwReadIdx-1);
+	RTMP_IO_WRITE32(pAd, RX_CRX_IDX, pAd->RxRing.RxCpuIdx);
+
+done:
+	RTMP_SEM_UNLOCK(&pAd->RxRingLock);
+	*pbReschedule = bReschedule;
+	return pRxPacket;
+}
+/* End of 2860_rtmp_init.c */
+