cmm_data.c

Linux下的RT系列无线网卡驱动,可以直接在x86平台上编译

/*
 *************************************************************************
 * Ralink Tech Inc.
 * 4F, No. 2 Technology 5th Rd.
 * Science-based Industrial Park
 * Hsin-chu, 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.             * 
 *                                                                       * 
 *************************************************************************
*/ 

#include "rt_config.h"

#define MAX_TX_IN_TBTT		(16)


#define GET_TXRING_FREENO(_pAd, _QueIdx) \
	(_pAd->TxRing[_QueIdx].TxSwFreeIdx > _pAd->TxRing[QueIdx].TxCpuIdx)	? \
			(_pAd->TxRing[_QueIdx].TxSwFreeIdx - _pAd->TxRing[_QueIdx].TxCpuIdx - 1) \
			 :	\
			(_pAd->TxRing[_QueIdx].TxSwFreeIdx + TX_RING_SIZE - _pAd->TxRing[_QueIdx].TxCpuIdx - 1);


#define GET_MGMTRING_FREENO(_pAd) \
	(_pAd->MgmtRing.TxSwFreeIdx > _pAd->MgmtRing.TxCpuIdx)	? \
			(_pAd->MgmtRing.TxSwFreeIdx - _pAd->MgmtRing.TxCpuIdx - 1) \
			 :	\
			(_pAd->MgmtRing.TxSwFreeIdx + MGMT_RING_SIZE - _pAd->MgmtRing.TxCpuIdx - 1);

UCHAR	SNAP_802_1H[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};
UCHAR	SNAP_BRIDGE_TUNNEL[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8};
// Add Cisco Aironet SNAP heade for CCX2 support
UCHAR	SNAP_AIRONET[] = {0xaa, 0xaa, 0x03, 0x00, 0x40, 0x96, 0x00, 0x00};
UCHAR	CKIP_LLC_SNAP[] = {0xaa, 0xaa, 0x03, 0x00, 0x40, 0x96, 0x00, 0x02};
UCHAR	EAPOL_LLC_SNAP[]= {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00, 0x88, 0x8e};
UCHAR	EAPOL[] = {0x88, 0x8e};
UCHAR   TPID[] = {0x81, 0x00}; /* VLAN related */

UCHAR	IPX[] = {0x81, 0x37};
UCHAR	APPLE_TALK[] = {0x80, 0xf3};
UCHAR	RateIdToPlcpSignal[12] = { 
	 0, /* RATE_1 */	1, /* RATE_2 */ 	2, /* RATE_5_5 */	3, /* RATE_11 */	// see BBP spec
	11, /* RATE_6 */   15, /* RATE_9 */    10, /* RATE_12 */   14, /* RATE_18 */	// see IEEE802.11a-1999 p.14
	 9, /* RATE_24 */  13, /* RATE_36 */	8, /* RATE_48 */   12  /* RATE_54 */ }; // see IEEE802.11a-1999 p.14

UCHAR	 OfdmSignalToRateId[16] = {
	RATE_54,  RATE_54,	RATE_54,  RATE_54,	// OFDM PLCP Signal = 0,  1,  2,  3 respectively
	RATE_54,  RATE_54,	RATE_54,  RATE_54,	// OFDM PLCP Signal = 4,  5,  6,  7 respectively
	RATE_48,  RATE_24,	RATE_12,  RATE_6,	// OFDM PLCP Signal = 8,  9,  10, 11 respectively
	RATE_54,  RATE_36,	RATE_18,  RATE_9,	// OFDM PLCP Signal = 12, 13, 14, 15 respectively
};

UCHAR	 OfdmRateToRxwiMCS[12] = {
	0,  0,	0,  0,	 
	0,  1,	2,  3,	// OFDM rate 6,9,12,18 = rxwi mcs 0,1,2,3
	4,  5,	6,  7,	// OFDM rate 24,36,48,54 = rxwi mcs 4,5,6,7
};
UCHAR	 RxwiMCSToOfdmRate[12] = {
	RATE_6,  RATE_9,	RATE_12,  RATE_18,	 
	RATE_24,  RATE_36,	RATE_48,  RATE_54,	// OFDM rate 6,9,12,18 = rxwi mcs 0,1,2,3
	4,  5,	6,  7,	// OFDM rate 24,36,48,54 = rxwi mcs 4,5,6,7
};

char*   MCSToMbps[] = {"1Mbps","2Mbps","5.5Mbps","11Mbps","06Mbps","09Mbps","12Mbps","18Mbps","24Mbps","36Mbps","48Mbps","54Mbps","MM-0","MM-1","MM-2","MM-3","MM-4","MM-5","MM-6","MM-7","MM-8","MM-9","MM-10","MM-11","MM-12","MM-13","MM-14","MM-15","MM-32","ee1","ee2","ee3"};

UCHAR default_cwmin[]={CW_MIN_IN_BITS, CW_MIN_IN_BITS, CW_MIN_IN_BITS-1, CW_MIN_IN_BITS-2};
UCHAR default_cwmax[]={CW_MAX_IN_BITS, CW_MAX_IN_BITS, CW_MIN_IN_BITS, CW_MIN_IN_BITS-1};
UCHAR default_sta_aifsn[]={3,7,2,2};

UCHAR MapUserPriorityToAccessCategory[8] = {QID_AC_BE, QID_AC_BK, QID_AC_BK, QID_AC_BE, QID_AC_VI, QID_AC_VI, QID_AC_VO, QID_AC_VO};

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

	Routine Description:
		API for MLME to transmit management frame to AP (BSS Mode)
	or station (IBSS Mode)
		
	Arguments:
		pAd Pointer to our adapter
		pData		Pointer to the outgoing 802.11 frame
		Length		Size of outgoing management frame
		
	Return Value:
		NDIS_STATUS_FAILURE
		NDIS_STATUS_PENDING
		NDIS_STATUS_SUCCESS

	IRQL = PASSIVE_LEVEL
	IRQL = DISPATCH_LEVEL
	
	Note:
	
	========================================================================
*/
NDIS_STATUS MiniportMMRequest(
	IN	PRTMP_ADAPTER	pAd,
	IN	UCHAR			QueIdx,
	IN	PUCHAR			pData,
	IN	UINT			Length)
{
	PNDIS_PACKET	pPacket;
	NDIS_STATUS  Status = NDIS_STATUS_SUCCESS;
	ULONG	 FreeNum;
	TXWI_STRUC		TXWI;
	ULONG	SW_TX_IDX; //TEMP, SW_TX_IDX;
	PTXD_STRUC		pTxD;
	unsigned long	IrqFlags = 0;
	UCHAR			IrqState;
	
	QueIdx=3;
	
	ASSERT(Length <= MGMT_DMA_BUFFER_SIZE);

	// 2860C use Tx Ring
	
	IrqState = pAd->irq_disabled;
	if ((pAd->MACVersion == 0x28600100) && (!IrqState))
		RTMP_IRQ_LOCK(&pAd->irq_lock, IrqFlags);

	do 
	{
		// Reset is in progress, stop immediately
		if ( RTMP_TEST_FLAG(pAd, fRTMP_ADAPTER_RESET_IN_PROGRESS) ||
			 RTMP_TEST_FLAG(pAd, fRTMP_ADAPTER_HALT_IN_PROGRESS)||
			 !RTMP_TEST_FLAG(pAd, fRTMP_ADAPTER_START_UP))
	{
			Status = NDIS_STATUS_FAILURE;
			break;
	}

		// Check Free priority queue
		// Since we use PBF Queue2 for management frame.  Its corresponding DMA ring should be using TxRing.
	
	// 2860C use Tx Ring
	if (pAd->MACVersion == 0x28600100)
	{
		FreeNum = GET_TXRING_FREENO(pAd, QueIdx);
		SW_TX_IDX = pAd->TxRing[QueIdx].TxCpuIdx;
		pTxD  = (PTXD_STRUC) pAd->TxRing[QueIdx].Cell[SW_TX_IDX].AllocVa;
	}
	else
	{
		FreeNum = GET_MGMTRING_FREENO(pAd);		
		SW_TX_IDX = pAd->MgmtRing.TxCpuIdx;
		pTxD  = (PTXD_STRUC) pAd->MgmtRing.Cell[SW_TX_IDX].AllocVa;
	}
		if ((FreeNum > 0))
			{
			NdisZeroMemory(&TXWI, TXWI_SIZE);
			Status = RTMPAllocateNdisPacket(pAd, &pPacket, (PUCHAR)&TXWI, TXWI_SIZE, pData, Length);
			if (Status != NDIS_STATUS_SUCCESS)
				{					
				DBGPRINT(RT_DEBUG_WARN, ("MiniportMMRequest (error:: can't allocate NDIS PACKET)\n"));
					break;
				}

			//pAd->CommonCfg.MlmeTransmit.field.MODE = MODE_CCK;
			//pAd->CommonCfg.MlmeRate = RATE_2; 			


			Status = MlmeHardTransmit(pAd, QueIdx, pPacket);
				if (Status != NDIS_STATUS_SUCCESS)
				RTMPFreeNdisPacket(pAd, pPacket);
			}
		else
			{
			pAd->RalinkCounters.MgmtRingFullCount++;
			DBGPRINT(RT_DEBUG_ERROR, ("Qidx(%d), not enough space in MgmtRing\n", QueIdx));
		}

	} while (FALSE);

	// 2860C use Tx Ring
	if ((pAd->MACVersion == 0x28600100) && (!IrqState))
		RTMP_IRQ_UNLOCK(&pAd->irq_lock, IrqFlags);

	return Status;
}


NDIS_STATUS MiniportMMRequestUnlock(
	IN	PRTMP_ADAPTER	pAd,
	IN	UCHAR			QueIdx,
	IN	PUCHAR			pData,
	IN	UINT			Length)
{
	PNDIS_PACKET	pPacket;
	NDIS_STATUS  Status = NDIS_STATUS_SUCCESS;
	ULONG	 FreeNum;
	TXWI_STRUC		TXWI;
	ULONG	SW_TX_IDX; //TEMP, SW_TX_IDX;
	PTXD_STRUC		pTxD;
	//ULONG			IrqFlags = 0;

	QueIdx = 3;
	ASSERT(Length <= MGMT_DMA_BUFFER_SIZE);

	do 
	{
		// Reset is in progress, stop immediately
		if ( RTMP_TEST_FLAG(pAd, fRTMP_ADAPTER_RESET_IN_PROGRESS) ||
			 RTMP_TEST_FLAG(pAd, fRTMP_ADAPTER_HALT_IN_PROGRESS)||
			 !RTMP_TEST_FLAG(pAd, fRTMP_ADAPTER_START_UP))
		{
			Status = NDIS_STATUS_FAILURE;
			break;
		}

		// Check Free priority queue
		// Since we use PBF Queue2 for management frame.  Its corresponding DMA ring should be using TxRing.
		// 2860C use Tx Ring
		if (pAd->MACVersion == 0x28600100)
		{	
			FreeNum = GET_TXRING_FREENO(pAd, QueIdx);
			SW_TX_IDX = pAd->TxRing[QueIdx].TxCpuIdx;
			pTxD  = (PTXD_STRUC) pAd->TxRing[QueIdx].Cell[SW_TX_IDX].AllocVa;
		}
		else
		{
			FreeNum = GET_MGMTRING_FREENO(pAd);		
			SW_TX_IDX = pAd->MgmtRing.TxCpuIdx;
			pTxD  = (PTXD_STRUC) pAd->MgmtRing.Cell[SW_TX_IDX].AllocVa;
		}
		if ((FreeNum > 0))
			{
			NdisZeroMemory(&TXWI, TXWI_SIZE);
			Status = RTMPAllocateNdisPacket(pAd, &pPacket, (PUCHAR)&TXWI, TXWI_SIZE, pData, Length);
			if (Status != NDIS_STATUS_SUCCESS)
				{					
				DBGPRINT(RT_DEBUG_WARN, ("MiniportMMRequest (error:: can't allocate NDIS PACKET)\n"));
					break;
				}

			//pAd->CommonCfg.MlmeTransmit.field.MODE = MODE_CCK;
			//pAd->CommonCfg.MlmeRate = RATE_2; 			


			Status = MlmeHardTransmit(pAd, QueIdx, pPacket);
				if (Status != NDIS_STATUS_SUCCESS)
				RTMPFreeNdisPacket(pAd, pPacket);
			}
			else
			{
			pAd->RalinkCounters.MgmtRingFullCount++;
			DBGPRINT(RT_DEBUG_ERROR, ("Qidx(%d), not enough space in MgmtRing\n", QueIdx));
		}

	} while (FALSE);


	return Status;
}

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

	Routine Description:
		Copy frame from waiting queue into relative ring buffer and set 
	appropriate ASIC register to kick hardware transmit function
	
	Arguments:
		pAd Pointer to our adapter
		pBuffer 	Pointer to	memory of outgoing frame
		Length		Size of outgoing management frame
		
	Return Value:
		NDIS_STATUS_FAILURE
		NDIS_STATUS_PENDING
		NDIS_STATUS_SUCCESS

	IRQL = PASSIVE_LEVEL
	IRQL = DISPATCH_LEVEL
	
	Note:
	
	========================================================================
*/
NDIS_STATUS MlmeHardTransmit(
	IN	PRTMP_ADAPTER	pAd,
	IN	UCHAR	QueIdx,
	IN	PNDIS_PACKET	pPacket)
{	
	if ((pAd->CommonCfg.RadarDetect.RDMode != RD_NORMAL_MODE)
#ifdef CARRIER_DETECTION_SUPPORT
		||(isCarrierDetectExist(pAd) == TRUE)
#endif // CARRIER_DETECTION_SUPPORT //
		)
	{
		return NDIS_STATUS_FAILURE;
	}

	if ( pAd->MACVersion == 0x28600100 )
		return MlmeHardTransmitTxRing(pAd,QueIdx,pPacket);
	else
		return MlmeHardTransmitMgmtRing(pAd,QueIdx,pPacket);

}

NDIS_STATUS MlmeHardTransmitTxRing(
	IN	PRTMP_ADAPTER	pAd,
	IN	UCHAR	QueIdx,
	IN	PNDIS_PACKET	pPacket)
{
	PACKET_INFO 	PacketInfo;
	PUCHAR			pSrcBufVA;
	UINT			SrcBufLen;
	PTXD_STRUC		pTxD;
#ifdef BIG_ENDIAN
    PTXD_STRUC      pDestTxD;
    TXD_STRUC       TxD;
#endif
	PHEADER_802_11	pHeader_802_11;
	BOOLEAN 		bAckRequired, bInsertTimestamp;
	ULONG			SrcBufPA;
	//UCHAR			TxBufIdx;
	UCHAR			MlmeRate;
	ULONG			SwIdx = pAd->TxRing[QueIdx].TxCpuIdx;
	PTXWI_STRUC 	pFirstTxWI;
	//ULONG	i;
	//HTTRANSMIT_SETTING	MlmeTransmit;   //Rate for this MGMT frame.
	ULONG	 FreeNum;


	RTMP_QueryPacketInfo(pPacket, &PacketInfo, &pSrcBufVA, &SrcBufLen);	

	if (pSrcBufVA == NULL)
	{
		// The buffer shouldn't be NULL
		return NDIS_STATUS_FAILURE;
	}

	// Make sure MGMT ring resource won't be used by other threads
	//NdisAcquireSpinLock(&pAd->TxRingLock);

	FreeNum = GET_TXRING_FREENO(pAd, QueIdx);

	if (FreeNum == 0)
	{
		//NdisReleaseSpinLock(&pAd->TxRingLock);
		return NDIS_STATUS_FAILURE;
	}

	SwIdx = pAd->TxRing[QueIdx].TxCpuIdx;

#ifndef BIG_ENDIAN	
	pTxD  = (PTXD_STRUC) pAd->TxRing[QueIdx].Cell[SwIdx].AllocVa;
#else
    pDestTxD  = (PTXD_STRUC)pAd->TxRing[QueIdx].Cell[SwIdx].AllocVa;
    TxD = *pDestTxD;
    pTxD = &TxD;
    RTMPDescriptorEndianChange((PUCHAR)pTxD, TYPE_TXD);
#endif

	if (pAd->TxRing[QueIdx].Cell[SwIdx].pNdisPacket)
	{
		printk("MlmeHardTransmit Error\n");
		//NdisReleaseSpinLock(&pAd->TxRingLock);
		return NDIS_STATUS_FAILURE;
	}



	// outgoing frame always wakeup PHY to prevent frame lost 
	// if (pAd->StaCfg.Psm == PWR_SAVE)
	if (OPSTATUS_TEST_FLAG(pAd, fOP_STATUS_DOZE))
		AsicForceWakeup(pAd);

	pFirstTxWI	=(PTXWI_STRUC)pSrcBufVA;
	
	pHeader_802_11			 = (PHEADER_802_11) (pSrcBufVA + TXWI_SIZE);
	if (pHeader_802_11->Addr1[0] & 0x01)
	{
		MlmeRate = pAd->CommonCfg.BasicMlmeRate;
	}
	else
	{
		MlmeRate = pAd->CommonCfg.MlmeRate;
	}
	
	// Verify Mlme rate for a / g bands.	
	if ((pAd->LatchRfRegs.Channel > 14) && (MlmeRate < RATE_6)) // 11A band
		MlmeRate = RATE_6;

	//
	// Should not be hard code to set PwrMgmt to 0 (PWR_ACTIVE)
	// Snice it's been set to 0 while on MgtMacHeaderInit
	// By the way this will cause frame to be send on PWR_SAVE failed.
	// 
	// pHeader_802_11->FC.PwrMgmt = 0; // (pAd->StaCfg.Psm == PWR_SAVE);
	//
	// In WMM-UAPSD, mlme frame should be set psm as power saving but probe request frame
#ifdef CONFIG_STA_SUPPORT
    // Data-Null packets alse pass through MMRequest in RT2860, however, we hope control the psm bit to pass APSD
	if (pHeader_802_11->FC.Type != BTYPE_DATA)        
    {
#endif // CONFIG_STA_SUPPORT //    
    	if ((pHeader_802_11->FC.SubType == SUBTYPE_PROBE_REQ) || !(pAd->CommonCfg.bAPSDCapable && pAd->CommonCfg.APEdcaParm.bAPSDCapable))
    	{
    		pHeader_802_11->FC.PwrMgmt = PWR_ACTIVE;
    	}
    	else
    	{
    		pHeader_802_11->FC.PwrMgmt = pAd->CommonCfg.bAPSDForcePowerSave;
    	}
#ifdef CONFIG_STA_SUPPORT        
    }
#endif // CONFIG_STA_SUPPORT //
	
	bInsertTimestamp = FALSE;
	if (pHeader_802_11->FC.Type == BTYPE_CNTL) // must be PS-POLL
	{
		bAckRequired = FALSE;
	}
	else // BTYPE_MGMT or BTYPE_DATA(must be NULL frame)
	{
		if (pHeader_802_11->Addr1[0] & 0x01) // MULTICAST, BROADCAST
		{
			bAckRequired = FALSE;
			pHeader_802_11->Duration = 0;
		}
		else
		{
			bAckRequired = TRUE;
			pHeader_802_11->Duration = RTMPCalcDuration(pAd, MlmeRate, 14);
			if (pHeader_802_11->FC.SubType == SUBTYPE_PROBE_RSP)
			{
				bInsertTimestamp = TRUE;
			}
		}
	}
	pHeader_802_11->Sequence = pAd->Sequence++;
	if (pAd->Sequence > 0xfff)
		pAd->Sequence = 0;
	// Before radar detection done, mgmt frame can not be sent but probe req
	// Because we need to use probe req to trigger driver to send probe req in passive scan
	if ((pHeader_802_11->FC.SubType != SUBTYPE_PROBE_REQ)
		&& (pAd->CommonCfg.bIEEE80211H == 1)
		&& (pAd->CommonCfg.RadarDetect.RDMode != RD_NORMAL_MODE))
	{
		DBGPRINT(RT_DEBUG_ERROR,("MlmeHardTransmit --> radar detect not in normal mode !!!\n"));
		//NdisReleaseSpinLock(&pAd->TxRingLock);
		return (NDIS_STATUS_FAILURE);
	}

#ifdef BIG_ENDIAN
	RTMPFrameEndianChange(pAd, (PUCHAR)pHeader_802_11, DIR_WRITE, FALSE);
#endif
	//
	// fill scatter-and-gather buffer list into TXD. Internally created NDIS PACKET
	// should always has only one ohysical buffer, and the whole frame size equals