// Copyright (c) 2000-2009 Nokia Corporation and/or its subsidiary(-ies).

 // All rights reserved.

 // This component and the accompanying materials are made available

 // under the terms of "Eclipse Public License v1.0"

 // which accompanies this distribution, and is available

 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

 //

 // Initial Contributors:

 // Nokia Corporation - initial contribution.

 //

 // Contributors:

 //

 // Description:

 //

 #include "plat_priv.h"

 #include <property.h>

 #include <variant.h>

 #include "pp_sdc.h" 

 const TInt  KDiskSectorSize=512;

 const TInt KTotalMDiskSize=0x100000; // 1MB (if changing this then also change CSD response)

 // ======== error code conversion ========

 GLDEF_C TInt MapLastErrorEpoc()

 //

 // map an Win32 error code to Epoc32 value

 //

 	{

 	TInt res=KErrGeneral;

 	switch (GetLastError())

 		{

 		case ERROR_SHARING_VIOLATION : res=KErrAccessDenied; break;

 		case ERROR_LOCK_VIOLATION : res=KErrLocked; break;

 		case ERROR_FILE_NOT_FOUND: res=KErrNotFound; break;

 		case ERROR_PATH_NOT_FOUND: res=KErrPathNotFound; break;

 		case ERROR_ALREADY_EXISTS:

 		case ERROR_FILE_EXISTS:

 			res=KErrAlreadyExists;

 			break;

 		case ERROR_NOT_READY: res=KErrNotReady; break;

 		case ERROR_UNRECOGNIZED_VOLUME:

 		case ERROR_NOT_DOS_DISK:

 			res=KErrUnknown;

 			break;

 		case ERROR_UNRECOGNIZED_MEDIA: res=KErrCorrupt; break;

 		case ERROR_INVALID_NAME: res=KErrBadName; break;

 		case ERROR_NO_MORE_FILES: res=KErrEof; break;

 		}

 	return(res);

 	}

 GLDEF_C TMMCErr MapLastErrorMmc()

 //

 // map Win32 error to a TMMCErr error.

 //

 	{

 	DWORD r=GetLastError();

 	TInt res=KErrGeneral;

 	switch (r)

 		{

 		case ERROR_SHARING_VIOLATION:

 		case ERROR_LOCK_VIOLATION:

 			res=KMMCErrLocked;			// KErrLocked

 			break;

 		case ERROR_FILE_NOT_FOUND:

 		case ERROR_PATH_NOT_FOUND:

 			res=KMMCErrNotFound;		// KErrNotFound

 			break;

 		case ERROR_ALREADY_EXISTS:

 		case ERROR_FILE_EXISTS:

 			res=KMMCErrAlreadyExists;	// KErrAlreadyExists

 			break;

 		case ERROR_NOT_READY: res=KMMCErrNoCard; break;

 		case ERROR_UNRECOGNIZED_VOLUME:

 		case ERROR_NOT_DOS_DISK:

 			res=KMMCErrGeneral;			// KErrGeneral

 			break;

 		case ERROR_UNRECOGNIZED_MEDIA:

 		case ERROR_INVALID_NAME:

 		case ERROR_NO_MORE_FILES:

 			res=KMMCErrResponseCRC; 	// KErrCorrupt

 			break;

 		}

 	return(res);

 	}

 // ======== DWinsSDStack ========

 DWinsSDStack::DWinsSDStack(TInt aBus, DMMCSocket* aSocket)

 : DSDStack(aBus, aSocket)

 	{	

 	iAddressedCard=KBroadcastToAllCards;

 //	iCMD42Failed=EFalse;

 	}

 TInt DWinsSDStack::Init()

 //

 // Allocate any resources. Only created once on kernel initialization so dont

 // worry about cleanup if it leaves.

 //

 	{

 	if((iCardArray = new TSDCardArray(this)) == NULL)

 		return KErrNoMemory;

 	TInt r=DMMCStack::Init();

 	if(r!=KErrNone)

 		return r;

 	DMediaChangeBase* pMCBase = MMCSocket()->iMediaChange;

 	static_cast<DWinsMMCMediaChange*>(pMCBase)->SetStackP(this);

 	Wins::SetMediaChangeCallBackPtr(DWinsMMCMediaChange::MediaChangeCallBack, (TAny*)pMCBase);

 	//

 	// Over time memory can become fragmented, and so it is not possible to

 	// allocate physically contiguous pages.  Therefore, the buffers for IO

 	// are allocated at startup.

 	//

 	// block and erase sector size characteristics depend on the specific

 	// card model, and so the initial values are estimates based on a typical

 	// card.  If these do not match the actual card's block size (or erase

 	// size, for SD,) then the media driver just gets a reduced or increased

 	// buffer area, and its efficiency varies accordingly.

 	//

 	// For the WINS implementation, fragmentation does not matter because

 	// DMA is not used.  The memory must still be allocated here so MEDMMC is

 	// able to use it.

 	//

 	// The constant calculations could be folded, but this illustrates how the

 	// values are derived.

 	//

 	// MMC - values from Hitachi 16Mb card, datasheet HB288016MM1

 	// minor buffer must contain enough space for MBR or block

 	const TUint mmcBlkSzLog2 = 9;				// READ_BLK_LEN and WRITE_BLK_LEN

 	const TUint mmcBlkSz = 1 << mmcBlkSzLog2;

 	const TInt mmcMinorBufLen = Max(KDiskSectorSize, mmcBlkSz);

 	const TInt KMinMMCBlocksInBuffer = 8;

 	const TInt mmcCchBufLen = KMinMMCBlocksInBuffer << mmcBlkSzLog2;

 	const TInt mmcTotalBufLen = mmcMinorBufLen + mmcCchBufLen;

 	// SDCard - values from 64Mb Panasonic RP-SD064

 	const TUint sdBlkSzLog2 = 9;				// READ_BL_LEN and WRITE_BLK_LEN

 	const TUint sdBlkSz = 1 << sdBlkSzLog2;

 	const TInt sdMinorBufLen = Max(KDiskSectorSize, sdBlkSz);

 	const TUint ss = 0x1f;						// SECTOR_SIZE, add 1 for sector count

 	const TInt KMinSDBlocksInBuffer = 8;

 	const TInt sdCchBufLen = Max(KMinSDBlocksInBuffer, ss + 1) << sdBlkSzLog2;

 	const TInt sdTotalBufLen = sdMinorBufLen + sdCchBufLen;

 	const TInt totalBufLen = Max(mmcTotalBufLen, sdTotalBufLen);

 	iMDBuf = reinterpret_cast<TUint8*>(Kern::Alloc(totalBufLen));

 	iMDBufLen = totalBufLen;

 	// initialize each card on the stack

 	TInt i;

 	for (i = 0; i < KTotalWinsCards; ++i)

 		{

 		TInt r = SetupSimulatedCard(i);

 		if (r != KErrNone)

 			return r;

 		}

 	// initialize pointers to currently present cards

 	// Slot zero can toggle between no card; card 0 and card 1.  The current state is

 	// determined by *Wins::CurrentPBusDevicePtr() and toggled by pressing F4 when F5

 	// (door open) is held down.  Because this function is only executed at startup,

 	// assume start with card zero.

 	iCardInfo[0] = iCardPool[0];

 	for (i = 1; i < KTotalWinsCardSlots; ++i)

 		{

 		iCardInfo[i]=iCardPool[i+1];

 		}

 	return KErrNone;

 	}

 void DWinsSDStack::MachineInfo(TMMCMachineInfo& aMachineInfo)

 	{

 	aMachineInfo.iTotalSockets=KTotalWinsCardSlots;

 	aMachineInfo.iTotalMediaChanges=0;  		// Not used at present

 	aMachineInfo.iTotalPrimarySupplies=0;		// Not used at present

 	aMachineInfo.iSPIMode=EFalse;

     aMachineInfo.iBaseBusNumber=0;

 	__ASSERT_DEBUG(aMachineInfo.iTotalSockets<=KMaxMMCardsPerStack,

 					DWinsSDStack::Panic(DWinsSDStack::EWinsMMCBadMachineInfo));

 	}

 void DWinsSDStack::AdjustPartialRead(

 #ifdef _DEBUG

 	const TMMCard* aCard,

 #else

 	const TMMCard* /*aCard*/,

 #endif

 	TUint32 aStart, TUint32 aEnd, TUint32* aPhysStart, TUint32* aPhysEnd) const

 	{

 #ifdef _DEBUG

 	const TUint32 blkLen = aCard->CSD().ReadBlockLength();

 	const TUint32 blkMsk = blkLen - 1;

 	__ASSERT_DEBUG(aCard->CSD().ReadBlPartial(), Panic(EWinsMMCAPRNotSupp));

 	__ASSERT_DEBUG(aEnd - aStart <= blkLen, Panic(EWinsMMCAPRRange));

 	__ASSERT_DEBUG((aEnd & ~blkMsk) > (aStart & ~blkMsk), Panic(EWinsMMCAPRBoundary));

 #endif

 	*aPhysStart = aStart & ~0x3;

 	*aPhysEnd = (aEnd + 0x3) & ~0x3;

 	}

 void DWinsSDStack::GetBufferInfo(TUint8** aMDBuf, TInt* aMDBufLen)

 	{

 	*aMDBuf = iMDBuf;

 	*aMDBufLen = iMDBufLen;

 	}

 void DWinsSDStack::Panic(TWinsMMCPanic aPanic)

 	{

 	_LIT(KPncNm,"PBUS-MMCSD-WINS");

 	Kern::PanicCurrentThread(KPncNm,aPanic);

 	}

 TInt DWinsSDStack::SetupSimulatedCard(TInt aCardNum)

 //

 // allocate individual card with Win32 file.  Only called at bootup, so no cleanup if fails.

 //

 	{

 	TWinsCardInfo* cip = new TWinsCardInfo;

 	if (cip == 0)

 		return KErrNoMemory;

 	TUint8 cid[KMMCCIDLength];

 	cid[0] = 'C';

 	cid[1] = 'I';

 	cid[2] = 'D';

 	cid[3] = TUint8('0' + aCardNum);

 	TInt j;

 	for (j = 4; j < KMMCCIDLength - 1; ++j)

 		cid[j] = 'c';

 	cid[KMMCCIDLength - 1] = '#';				// '#' = 0x23, bit zero must be 1

 	cip->iCID=cid;

 	cip->iPWD = new TMediaPassword;

 	if (! cip->iPWD)

 		{

 		delete cip;

 		return KErrNoMemory;

 		}

 	// cards in slot zero are SD

 	TInt mediaAreas;

 	if (aCardNum <= 1)

 		{

 		cip->iIsSDCard = ETrue;

 		mediaAreas = 2;

 		}

 	else

 		{

 		cip->iIsSDCard = EFalse;

 		mediaAreas = 1;

 		}

 	cip->iState=ECardStateIdle;

 	for (TInt area = 0; area < mediaAreas; ++area)

 		{

 		TInt r = CreateBinFileForCard(aCardNum, area, &cip->iAreaHandles[area]);

 		if (r != KErrNone)

 			return r;

 		}

 	iCardPool[aCardNum]=cip;

 	return(KErrNone);

 	}

 TInt DWinsSDStack::CreateBinFileForCard(TInt aCardNum, TInt aAreaNum, HANDLE* aHandle)

 //

 // create .bin file in temp directory to contain media area of card.

 //

 	{

 	const char* emulatorPath = Property::GetString("EmulatorMediaPath");

 	if (!Emulator::CreateAllDirectories(emulatorPath))

 		return Emulator::LastError();

 	TBuf8<KMaxFileName> fn8(_L8(emulatorPath));

 	fn8.Append(_L8("MMCCRD"));

 	fn8.AppendNum(aCardNum);

 	fn8.Append('A'+aAreaNum);

 	fn8.Append(_L8(".BIN"));

 	fn8.Append('\0');

 	*aHandle = CreateFileA(

 		(LPCSTR) fn8.Ptr(),					// LPCSTR lpFileName,

 		GENERIC_READ | GENERIC_WRITE,		// DWORD dwDesiredAccess

 		FILE_SHARE_READ | FILE_SHARE_WRITE,	// DWORD dwShareMode

 		NULL,								// LPSECURITY_ATTRIBUTES lpSecurityAttributes

 		OPEN_ALWAYS,						// DWORD dwCreationDisposition

 		FILE_FLAG_RANDOM_ACCESS,			// DWORD dwFlagsAndAttributes

 		NULL);								// HANDLE hTemplateFile

 	if (*aHandle == INVALID_HANDLE_VALUE)

 	    return MapLastErrorEpoc();

 	if (	SetFilePointer(*aHandle, KTotalMDiskSize, NULL, FILE_BEGIN) == 0xffffffffu

 		||	! SetEndOfFile(*aHandle) )

 		{

 		CloseHandle(*aHandle);

 	    return MapLastErrorEpoc();

 		}

 	return KErrNone;

 	}

 void DWinsSDStack::SetBusConfigDefaults(TMMCBusConfig& aConfig, TUint aClock)

 	{

 	const TUint KWinsMaxHwInterfaceClk=104000;

 	const TUint KWinsResponseTimeOut=6400;

 	const TUint KWinsDataTimeOut=40000;

 	const TUint KWinsBusyTimeOut=200000;

 	aConfig.iBusClock = (aClock > KWinsMaxHwInterfaceClk) ? KWinsMaxHwInterfaceClk : aClock;

 	aConfig.iResponseTimeOut=KWinsResponseTimeOut;

 	aConfig.iDataTimeOut=KWinsDataTimeOut;

 	aConfig.iBusyTimeOut=KWinsBusyTimeOut;

 	}

 void DWinsSDStack::InitClockOff()

 	{

 	// empty.

 	}

 void DWinsSDStack::ASSPReset()

 	{

 	// empty.

 	}

 void DWinsSDStack::ASSPDisengage()

 	{

 	// empty.

 	}

 void DWinsSDStack::DoPowerDown()

 	{

 	// empty.

 	}

 LOCAL_C TInt SetMediaPasswordEnvironmentVar(TInt aSocketNum,TInt aCardNum,const TDesC8& aPasswd)

 // 

 // Set the password for local drive 'aLocalDrive', card number 'aCardNum' to 'aPasswd' - as an

 // environment variable. Note that the card number is only relevant where the emulated drive

 // supports card hot-swapping (i.e. F4 whilst F5 is held down).

 //

 	{

 	// Setup the appropriate environment variable string '_EPOC_LocDrv_<locDrvNum>_PWORD_<cardNum>'

 	TUint16 envVar[]=L"_EPOC_Socket_X_PWORD_Y";

 	envVar[13]=(TUint16)('0'+aSocketNum);

 	envVar[21]=(TUint16)('0'+aCardNum);

 	// Setup the new value of the environment variable

 	TUint16	envVal[100];

 	TInt len=aPasswd.Length();

 	// the password may be empty if a card's password is cleared

 	if (len>(100-1))

 		return(KErrArgument);

 	memcpy(&envVal[0],reinterpret_cast<const TUint16 *>(aPasswd.Ptr()),len);

 	envVal[len>>1]='\0';

 	// Now set the new value for the environment variable

 	if (SetEnvironmentVariable(envVar,&envVal[0]))

 		return(KErrNone);

 	return KErrGeneral;

 	}

 LOCAL_C TInt MediaPasswordEnvironmentVar(TInt aSocketNum,TInt aCardNum,TDes8& aPasswd)

 // 

 // Get the password for local drive 'aLocalDrive', card number 'aCardNum' into 'aPasswd' - from

 // an environment variable. Note that the card number is only relevant where the emulated drive

 // supports card hot-swapping (i.e. F4 whilst F5 is held down).

 //

 	{

 	TUint16 envVar[]=L"_EPOC_Socket_X_PWORD_Y";

 	envVar[13]=(TUint16)('0'+aSocketNum);

 	envVar[21]=(TUint16)('0'+aCardNum);

 	TUint16 envVal[100];	// To hold the value of the retreived environment variable

 	DWORD len=GetEnvironmentVariable(envVar,&envVal[0],100);

 	if (len>(TUint)100)

 		return(KErrGeneral);

 	if (len)

 		{

 		// Found the requested environment variable so there is a password for this local drive / card. 

 		if ((len<<1)<=KMaxMediaPassword)

 			{

 			aPasswd.FillZ(KMaxMediaPassword);

 			aPasswd.Zero();

 			aPasswd.Copy(reinterpret_cast<TUint8*>(&envVal[0]),len<<1);

 			return(KErrNone);	

 			}

 		else	

 			return(KErrGeneral);	

 		}

 	return(KErrNotFound);

 	}

 TMMCErr DWinsSDStack::DoPowerUpSM()

 	{

 	enum states

 		{

 		EStBegin=0,

 		EStEnd

 		};

 	SMF_BEGIN

 		if(MMCSocket()->iVcc->SetState(EPsuOnCurLimit) != KErrNone)

 			return KMMCErrHardware;

 		for (TInt i = 0; i < KTotalWinsCardSlots; ++i)

 			{

 			// if card has a password, it will be locked on power up

 			TInt cardNum = (i==0) ? *Wins::CurrentPBusDevicePtr() : i;

 			if (	cardNum >= 0

 				&&	MediaPasswordEnvironmentVar(

 						MMCSocket()->iSocketNumber, cardNum, *(iCardInfo[i]->iPWD))

 					==	KErrNone)

 				{

 				iCardInfo[i]->iIsLocked = (iCardInfo[i]->iPWD->Length() > 0);

 				}

 			else	

 				iCardInfo[i]->iIsLocked=EFalse;

 			iCardInfo[i]->iState = ECardStateIdle;

 			iCardInfo[i]->iRCA=0x0001;		// Default RCA - spec 2.2, s4.2.1, 5.4

 			}

 		ReportPowerUp();

 	SMF_END

 	}

 TMMCErr DWinsSDStack::InitClockOnSM()

 	{

 	enum states

 		{

 		EStBegin=0,

 		EStEnd

 		};

 	SMF_BEGIN

 	SMF_END

 	}

 void DWinsSDStack::AddressCard(TInt aCardNumber)

 	{

 	iAddressedCard = aCardNumber;

 	}

 TInt DWinsSDStack::GetTargetSlotNumber(const TRCA& anRCA)

 //

 // when the controller is given a command with an embedded RCA, this function

 // works out which physical card slot it corresponds to.  If no card has been

 // assigned the RCA then it returns -1.

 //

 	{

 	TInt targetIdx = -1;

 	for (TInt i = 0; i < KTotalWinsCardSlots; ++i)

 		{

 		if (iCardInfo[i]->iRCA==anRCA)

 			{

 			targetIdx=i;

 			break;

 			}

 		}

 	return(targetIdx);

 	}

 TMMCErr DWinsSDStack::IssueMMCCommandSM()

 	{

 	enum states

 		{

 		EStBegin=0,

 		EStEnd

 		};

 	TMMCCommandDesc& cmd = Command();

 	// If the command contains an embedded RCA then extract it	

 	TRCA tgtRCA=0;

 	TBool supRCA=EFalse;

 	if (/*cmd.iCommand == ECmdSetRelativeAddr	||	*/cmd.iCommand == ECmdSelectCard

 	||	cmd.iCommand == ECmdSendCSD			||	cmd.iCommand == ECmdSendCID

 	||	cmd.iCommand == ECmdSendStatus		||	cmd.iCommand == ECmdGoInactiveState

 	||	cmd.iCommand == ECmdFastIO 			||  cmd.iCommand == ECmdAppCmd )

 		{

 		if ((cmd.iArgument >> 16) != 0)

 			{

 			supRCA=ETrue;

 			tgtRCA=TUint16(cmd.iArgument >> 16);

 			}

 		}

 	// if the card contains an embedded RCA, work out which slot it corresponds to.

 	// At the end of the function, this card is used to generate the R1 response.

 	// Assume that if rca is supplied it either corresponds to the selected card or

 	// broadcast mode is on.  (An exception is CMD7 with arg0 to deselect all cards.)

 	TInt targetCard = supRCA ? GetTargetSlotNumber(tgtRCA) : iAddressedCard;

 	TBool rto = EFalse;							// response timeout

 	// if try to access card zero has been set to holding no card via F5 / F4 then timeout.

 	if ((targetCard == 0) && *Wins::CurrentPBusDevicePtr() < 0)

 		return KMMCErrResponseTimeOut;

 	HANDLE winHandle;

 	// CMD42 is a data transfer command.  That means the R1 response that it returns

 	// immediately is the state it is in on receiving the data block, and not after

 	// processing it.  If the data block is invalid then LOCK_UNLOCK_FAILED will be

 	// set in the R1 response which is sent in reply to the next command.

 	TBool nextCMD42Failed = EFalse;

 	TBool lock_unlock_failed=EFalse;

 	// When the card is locked, it will only respond to basic command class (0) and

 	// lock card command class (7).  An exception is CMD16.  This is sent before CMD42,

 	// but is classified (MMC Spec 23.2, table 5) as belonging to classes 2 and 4.

 	// For data transfer commands, LOCK_UNLOCK_FAIL is set in response to the following

 	TMMCCommandEnum origCmd = cmd.iCommand;

 	// if targetting locked card...

 	if (targetCard != KBroadcastToAllCards && iCardInfo[targetCard]->iIsLocked)

 		{

 		// ...and not command used in init or CMD42 sequence...

 		if (!(	((cmd.iSpec.iCommandClass & (KMMCCmdClassApplication | KMMCCmdClassBasic | KMMCCmdClassLockCard)) != 0)

 			||	(cmd.iCommand == ECmdSetBlockLen) || (cmd.iCommand == ECmdAppCmd) ))

 			{

 			lock_unlock_failed = ETrue;

 			cmd.iCommand = (TMMCCommandEnum) -1;	// skip case processing

 			}

 		}

 	SMF_BEGIN

 	switch (cmd.iCommand)

 		{

 		case ECmdGoIdleState:	// CMD0

 			if (iAddressedCard != KBroadcastToAllCards)

 				iCardInfo[iAddressedCard]->iState = ECardStateIdle;

 			else

 				{

 				for (TInt i = 0; i < KTotalWinsCardSlots; ++i)

 					iCardInfo[i]->iState = ECardStateIdle;

 				}

 			break;

 		case ECmd41:

 		case ECmdSendOpCond:	// CMD1

 			{

 			if (iAddressedCard != KBroadcastToAllCards)

 				iCardInfo[iAddressedCard]->iState = ECardStateReady;

 			else

 				{

 				for (TInt i = 0; i < KTotalWinsCardSlots; ++i)

 					iCardInfo[i]->iState = ECardStateReady;

 				}

 			// bit31 is set to indicate cards are not still powering up

 			TUint32 r3 = KMMCWinsCardOCRValue | KMMCOCRBusy;

 			TMMC::BigEndian4Bytes(cmd.iResponse, r3);

 			}

 			break;

 		case ECmdAllSendCID:	// CMD2

 			{

 			TInt idx;

 			if (iAddressedCard != KBroadcastToAllCards)

 				{

 				idx = iAddressedCard;

 				__ASSERT_DEBUG(

 					iCardInfo[iAddressedCard]->iState == ECardStateReady,

 					DWinsSDStack::Panic(DWinsSDStack::EStkIMCBadStateCmd2));

 				}

 			else

 				idx = FindAnyCardInStack(ECardStateReady);

 			if (idx == -1)

 				rto = ETrue;

 			else

 				{

 				iCardInfo[idx]->iCID.Copy(cmd.iResponse);

 				iCardInfo[idx]->iState = ECardStateIdent;

 				}

 			}

 			break;

 		case ECmdSetRelativeAddr:	// CMD3

 			{

 			TInt idx;

 			if (iAddressedCard != KBroadcastToAllCards)

 				{

 				__ASSERT_DEBUG(

 					iCardInfo[iAddressedCard]->iState == ECardStateIdent,

 					DWinsSDStack::Panic(DWinsSDStack::EStkIMCBadStateCmd3));

 				if (iCardInfo[iAddressedCard]->iIsSDCard)

 					{

 					static TUint16 RCACounter = 0x1234;

 					// SD Cards publish RCAs

 					++RCACounter;

 					iCardInfo[iAddressedCard]->iRCA = RCACounter;

 					iCardInfo[iAddressedCard]->iState = ECardStateStby;

 					TUint32 r6 = TUint32(RCACounter) << 16;

 					TMMC::BigEndian4Bytes(&cmd.iResponse[0],r6); // Ignore bits 47-40

 					}

 				else

 					{

 					iCardInfo[iAddressedCard]->iRCA = TUint16(cmd.iArgument >> 16);

 					iCardInfo[iAddressedCard]->iState=ECardStateStby;

 					}

 				}

 			else

 				{

 				// MultiMediaCards are assigned RCAs

 				idx = FindOneCardInStack(ECardStateIdent);

 				iCardInfo[iAddressedCard]->iRCA = TUint16(cmd.iArgument >> 16);

 				iCardInfo[iAddressedCard]->iState=ECardStateStby;

 				targetCard = iAddressedCard;

 				}

 			}

 			break;

 		case ECmd6:

 			// if ACMD6 then change bus width

 			if (cmd.iSpec.iCommandClass == KMMCCmdClassApplication)

 				{

 				switch (cmd.iArgument)

 					{

 				case 0x00:

 					iCardInfo[iAddressedCard]->iBusWidth = 1;

 					break;

 				case 0x02:

 					iCardInfo[iAddressedCard]->iBusWidth = 4;

 					break;

 				default:

 					DWinsSDStack::Panic(DWinsSDStack::EStkIMCCmd6InvalidWidth);

 					break;

 					}

 				}

 			break;

 		case ECmdSelectCard:		// CMD7

 			{

 			// switch to broadcast mode so the currently selected and new cards

 			// receive the command simultaneously.

 			TInt idx = FindAnyCardInStack(ECardStateTran);

 			if (idx != -1)

 				iCardInfo[idx]->iState = ECardStateStby;

 			if ((iAddressedCard=targetCard) == KBroadcastToAllCards)

 				rto = ETrue;

 			else

 				{

 				iCardInfo[targetCard]->iState = ECardStateTran;

 				targetCard = targetCard;

 				}

 			}

 			break;

 		case ECmdSendStatus:

 			// R1 response so status return as for any other R1 command.

 			if (cmd.iSpec.iCommandClass == KMMCCmdClassApplication)

 				{

 				__ASSERT_DEBUG(

 					iCardInfo[targetCard]->iIsSDCard,

 					DWinsSDStack::Panic(DWinsSDStack::EStkICMACMD13NotSD));

 				memset(cmd.iDataMemoryP, 0, KSDStatusBlockLength);

 				if (iCardInfo[targetCard]->iBusWidth == 1)

 					cmd.iDataMemoryP[0] = 0x00 << 6;

 				else	// if (iCardInfo[targetCard]->iBusWidth == 4)

 					cmd.iDataMemoryP[0] = 0x02 << 6;

 				cmd.iDataMemoryP[7] = 0x28;		// PROTECTED_AREA_SIZE

 				}

 			break;

 		case ECmdReadSingleBlock:

 		case ECmdReadMultipleBlock:

 			{

 			winHandle=iCardInfo[targetCard]->iAreaHandles[KSDUserArea];

 			if ( cmd.iSpec.iUseStopTransmission && cmd.iBlockLength >= cmd.iTotalLength)

 				return( KMMCErrNotSupported );

     		TMMCErr err;

 			TInt pos = cmd.iArgument;

     		if (SetFilePointer(winHandle,pos,NULL,FILE_BEGIN)==0xffffffffu)

         		err=MapLastErrorMmc();

     		else

         		{

 	    		DWORD res;

 				TInt len = cmd.iTotalLength;

 		        if (ReadFile(winHandle,(TAny*)cmd.iDataMemoryP,len,&res,NULL)==FALSE)

                     err=MapLastErrorMmc();

                 else if (res!=(DWORD)len)

                     err=KMMCErrGeneral;

                 else

                     err=KMMCErrNone;

 				}

 			if (err!=KMMCErrNone)

 				return(err);

 			break;

 			}

 		case ECmd22:

 			if (cmd.iSpec.iCommandClass == KMMCCmdClassApplication)

 				{

 				TMMC::BigEndian4Bytes(cmd.iResponse, iMBWOKBlocks);

 				}

 			break;

 		// ------------------------------------------------------------------

 		case ECmdWriteBlock:

 		case ECmdWriteMultipleBlock:

 			{

 			TUint32 writeLen;

 			// periodically fail multi-block writes to test ACMD22 error recovery

 			if (cmd.iCommand != ECmdWriteMultipleBlock)

 				writeLen = cmd.iTotalLength;

 			else

 				{

 				const TInt KMaxFailCnt = 4;

 				static TInt failCnt = 0;

 				const TInt KMaxFailBlock = 4;

 				static TInt failBlocks = 0;

 				failCnt = (failCnt + 1) % KMaxFailCnt;

 				if (failCnt != 0)

 					writeLen = cmd.iTotalLength;

 				else

 					{

 					failBlocks = (failBlocks + 1) % KMaxFailBlock;

 					// fail at least one block

 					TInt totalBlocks = cmd.iTotalLength / cmd.iBlockLength;

 					TInt blocksToFail = Min(failBlocks + 1, totalBlocks);	// fail at least one block

 					iMBWOKBlocks = (totalBlocks - blocksToFail);

 					writeLen = iMBWOKBlocks * cmd.iBlockLength;

 					if (writeLen == 0)

 						return KMMCErrDataTimeOut;

 					}

 				}

 			HANDLE h=iCardInfo[targetCard]->iAreaHandles[KSDUserArea];

     		TMMCErr err;

 			TInt pos = cmd.iArgument;

     		if (SetFilePointer(h, pos, NULL, FILE_BEGIN)==0xffffffffu)

         		err = MapLastErrorMmc();

     		else

         		{

 	    		DWORD res;

 				if (! WriteFile(h, (LPCVOID)cmd.iDataMemoryP,writeLen,&res,NULL))

                     err=MapLastErrorMmc();

                 else if (res!=(DWORD)writeLen)

                     err=KMMCErrGeneral;

                 else

                     err=KMMCErrNone;

 				}

 			if (err!=KMMCErrNone)

 				return(err);

 			if (writeLen != cmd.iTotalLength)

 				return KMMCErrDataTimeOut;

 			}

 			break;

 		case ECmdAppCmd:

 			// targetCard == -1 when ACMD41 being sent because not yet supplied

 			if (iAddressedCard != KBroadcastToAllCards)

 				{

 				// timeout if addressed card is not SD

 				if (! iCardInfo[iAddressedCard]->iIsSDCard)

 					rto = ETrue;

 				}

 			else

 				{

 				// request sent to specific non-SD card

 				if (targetCard != -1 && ! iCardInfo[targetCard]->iIsSDCard)

 					rto = ETrue;

 				}

 			break;

 		case ECmdSendCSD:

 			{

 			iCardInfo[targetCard]->GetCSD(cmd.iResponse);

 			break;

 			}

 		// ------------------------------------------------------------------

 		case ECmdLockUnlock:

 			// in EPOC, Lock() does not actually lock the card.  It just sets the

 			// password.  This means that the card is still accessible to the user,

 			// but must be unlocked the next time it is powered up.

 			// a real card will transiently go into rcv and prg state while processing

 			// this command.  When finished, it will fall back into tran state.

 			// The R1 response is sent immediately after CMD42.  CIMReadWriteBlocksSM()

 			// sends CMD13 to find out whether or not LOCK_UNLOCK_FAIL was set.

 			// the asserts in this case protect against invalid data being sent from the

 			// media driver.  A real card would fail these corrupt data blocks.

 			{

 			const TInt8 cmd_byte(*cmd.iDataMemoryP);

 			__ASSERT_DEBUG(										// ensure not CLR_PWD && SET_PWD

 				!((cmd_byte & KMMCLockUnlockClrPwd) && (cmd_byte & KMMCLockUnlockSetPwd)),

 				DWinsSDStack::Panic(DWinsSDStack::EWinsMMCCorruptCommand) );

 			__ASSERT_DEBUG(										// not actually lock a card while setting the password

 				((cmd_byte & (KMMCLockUnlockLockUnlock | KMMCLockUnlockSetPwd)) != (KMMCLockUnlockLockUnlock | KMMCLockUnlockSetPwd)),

 				DWinsSDStack::Panic(DWinsSDStack::EWinsMMCLockAttempt) );

 			if (cmd_byte & KMMCLockUnlockErase)					// ERASE (not supported)

 				return KMMCErrNotSupported;

 			const TInt8 pwd_len = *(cmd.iDataMemoryP + 1);

 			const TPtrC8 pwd(cmd.iDataMemoryP + 2, pwd_len);

 			if ((cmd_byte & KMMCLockUnlockClrPwd) != 0)			// CLR_PWD == 1

 				{

 				__ASSERT_DEBUG(

 					pwd_len >= 0 && pwd_len <= KMaxMediaPassword,

 					DWinsSDStack::Panic(DWinsSDStack::EWinsMMCCorruptCommand));

 				if (iCardInfo[targetCard]->iIsLocked)						// clear when locked

 					nextCMD42Failed = ETrue;

 				else														// clear when unlocked

 					{

 					if (iCardInfo[targetCard]->iPWD->Compare(pwd) != 0)		// clear when unlocked with wrong password

 						{

 						nextCMD42Failed = ETrue;

 						lock_unlock_failed = ETrue;

 						}

 					else													// clear when unlocked with right password

 						{

 						// Clear from password store 

 						iCardInfo[targetCard]->iPWD->Zero();

 						iCardInfo[targetCard]->iIsLocked = EFalse;

 						nextCMD42Failed = EFalse;

 						// Clear from environment settings

 						TInt cardNum=(targetCard==0) ? *Wins::CurrentPBusDevicePtr() : targetCard; // Can't be -1 at this stage

 						SetMediaPasswordEnvironmentVar(MMCSocket()->iSocketNumber,cardNum,*(iCardInfo[targetCard]->iPWD));

 						}

 					}

 				}

 			else if ((cmd_byte & KMMCLockUnlockSetPwd) == 0)	// SET_PWD == 0: unlock

 				{

 				__ASSERT_DEBUG(

 					pwd_len >= 0 && pwd_len <= KMaxMediaPassword,

 					DWinsSDStack::Panic(DWinsSDStack::EWinsMMCCorruptCommand) );

 				if (! iCardInfo[targetCard]->iIsLocked)						// unlock when unlocked

 					nextCMD42Failed = ETrue;

 				else

 					{

 					if (iCardInfo[targetCard]->iPWD->Compare(pwd) != 0)		// unlock when locked with wrong password

 						{

 						nextCMD42Failed = ETrue;

 						lock_unlock_failed = ETrue;

 						}

 					else													// unlock when locked with right password

 						{

 						iCardInfo[targetCard]->iIsLocked = EFalse;

 						nextCMD42Failed = EFalse;

 						}

 					}

 				}

 			else  if ((cmd_byte & KMMCLockUnlockSetPwd) == KMMCLockUnlockSetPwd)	// SET_PWD == 1

 				{

 				__ASSERT_DEBUG(

 					cmd_byte & KMMCLockUnlockSetPwd,

 					DWinsSDStack::Panic(DWinsSDStack::EWinsMMCCorruptCommand) );

 				// if pwd_len < iCardInfo[targetCard]->iPWD->Length() then data block must be invalid.

 				// This can be caused by bad user input rather than inaccurate formation.

 				if (!(	pwd_len >= iCardInfo[targetCard]->iPWD->Length()

 					&&	pwd_len <= iCardInfo[targetCard]->iPWD->Length() + KMaxMediaPassword ))

 					{

 					nextCMD42Failed = ETrue;

 					}

 				else

 					{

 					const TInt old_pwd_len = iCardInfo[targetCard]->iPWD->Length();

 					TPtrC8 old_pwd(cmd.iDataMemoryP + 2, old_pwd_len);

 					TPtrC8 new_pwd(cmd.iDataMemoryP + 2 + old_pwd_len, pwd_len - old_pwd_len);

 					// card must not be locked and supplied current password must be correct

 					if (iCardInfo[targetCard]->iIsLocked || iCardInfo[targetCard]->iPWD->Compare(old_pwd) != 0)

 						{

 						nextCMD42Failed = ETrue;

 						lock_unlock_failed = ETrue;

 						}

 					else

 						{

 						// Set in password store

 						iCardInfo[targetCard]->iPWD->Copy(new_pwd);

 						nextCMD42Failed = EFalse;

 						// Set in environment settings

 						TInt cardNum=(targetCard==0) ? *Wins::CurrentPBusDevicePtr() : targetCard; // Can't be -1 at this stage

 						SetMediaPasswordEnvironmentVar(MMCSocket()->iSocketNumber,cardNum,*(iCardInfo[targetCard]->iPWD));

 						}

 					}

 				}

 			else  if ((cmd_byte & KMMCLockUnlockLockUnlock) == KMMCLockUnlockLockUnlock)

 				{

 				__ASSERT_DEBUG(

 					pwd_len >= 0 && pwd_len <= KMaxMediaPassword,

 					DWinsSDStack::Panic(DWinsSDStack::EWinsMMCCorruptCommand) );

 				if (iCardInfo[targetCard]->iIsLocked)						// lock when locked

 					nextCMD42Failed = ETrue;

 				else

 					{

 					if (iCardInfo[targetCard]->iPWD->Compare(pwd) != 0)		// lock with wrong password

 						{

 						nextCMD42Failed = ETrue;

 						lock_unlock_failed = ETrue;

 						}

 					else													// lock with right password

 						{

 						iCardInfo[targetCard]->iIsLocked = ETrue;

 						nextCMD42Failed = EFalse;

 						}

 					}

 				}

 			else

 				{

 				__ASSERT_DEBUG(EFalse, DWinsSDStack::Panic(DWinsSDStack::EWinsMMCLockAttempt) );

 				}

 			}	// case ECmdLockUnlock

 		// ------------------------------------------------------------------

 		default:

 			break;

 		}

 	if (rto)

 		return(KMMCErrResponseTimeOut);

 	cmd.iCommand = origCmd;

 	// If this is an R1 or R1b response type command then return card status as a response

 	if (	targetCard != -1

 		&&	(cmd.iSpec.iResponseType==ERespTypeR1 || cmd.iSpec.iResponseType==ERespTypeR1B) )

 		{

 		TUint32 resp(

 				iCardInfo[targetCard]->iState

 			|	((iCardInfo[targetCard]->iIsLocked ? 1 : 0) << 25)

 			|	((lock_unlock_failed ? 1 : 0) << 24) );

 		if (iCMD42Failed)								// previous CMD42

 			{

 			resp |= KMMCStatErrLockUnlock;

 			nextCMD42Failed = EFalse;

 			}

 		iCMD42Failed = nextCMD42Failed;

 		TMMC::BigEndian4Bytes(&cmd.iResponse[0],resp); // Ignore bits 47-40

 		}

 	SMF_END

 	}

 TMMCErr DWinsSDStack::ModifyCardCapabilitySM()

 //

 // This function provides a chance to modify the capability of paticular cards.

 // Licensee may overide this function to modify certain card's capability as needed.

 // A state machine is needed in derived function and function of base class should be

 // called in order to act more generic behaviour.

 //

     {

 		enum states

 			{

 			EStBegin=0,

 			EStDone,

 			EStEnd

 			};

     SMF_BEGIN

 		SMF_INVOKES( DSDStack::BaseModifyCardCapabilitySMST, EStDone )

     SMF_STATE(EStDone)

     SMF_END

     }

 TInt DWinsSDStack::FindAnyCardInStack(TMMCardStateEnum aState)

 //

 // first first active card in supplied state.  Return -1 if

 // no active card is in supplied state.

 //

 	{

 	if (iAddressedCard != KBroadcastToAllCards)

 		return (iCardInfo[iAddressedCard]->iState == aState) ? iAddressedCard : -1;

 	else

 		{

 		for (TInt i = 0; i < KTotalWinsCardSlots; ++i)

 			{

 			if (iCardInfo[i]->iState == aState)

 				return i;

 			}

 		return -1;

 		}

 	}

 TInt DWinsSDStack::FindFirstCardInStack(TMMCardStateEnum aState)

 //

 // find card which is active on bus and in supplied state.

 // There can be more than one active card in the the supplied state,

 // but there should be at least one.

 //

 	{

 	if (iAddressedCard != KBroadcastToAllCards)

 		{

 		__ASSERT_DEBUG(iCardInfo[iAddressedCard]->iState == aState, DWinsSDStack::Panic(DWinsSDStack::EStkFFCNotSelCard));

 		return iAddressedCard;

 		}

 	else

 		{

 		TInt idx = -1;

 		for (TInt i = 0; idx != -1 && i < KTotalWinsCardSlots; ++i)

 			{

 			if (iCardInfo[i]->iState == aState)

 				idx = i;

 			}

 		__ASSERT_DEBUG(idx != -1, DWinsSDStack::Panic(DWinsSDStack::EStkFFCNoneSel));

 		return idx;

 		}

 	}

 TInt DWinsSDStack::FindOneCardInStack(TMMCardStateEnum aState)

 //

 // find card which is active on bus and in supplied state.

 // There should be exactly one active card in the supplied state.

 //

 	{

 	if (iAddressedCard != KBroadcastToAllCards)

 		{

 		__ASSERT_DEBUG(iCardInfo[iAddressedCard]->iState == aState, DWinsSDStack::Panic(DWinsSDStack::EStkFOCNotSelCard));

 		return iAddressedCard;

 		}

 	else

 		{

 		TInt idx = -1;

 		for (TInt i = 0; i < KTotalWinsCardSlots; ++i)

 			{

 			if (iCardInfo[i]->iState == aState)

 				{

 				__ASSERT_DEBUG(idx == -1, DWinsSDStack::Panic(DWinsSDStack::EStkFOCMultiSel));

 				idx = i;

 				}

 			}

 		__ASSERT_DEBUG(idx != -1, DWinsSDStack::Panic(DWinsSDStack::EStkFOCNoneSel));

 		return idx;

 		}

 	}

 // ======== DWinsMMCMediaChange ========

 #pragma warning( disable : 4355 )	// this used in initializer list

 DWinsMMCMediaChange::DWinsMMCMediaChange(TInt aMediaChangeNum)

 	: DMMCMediaChange(aMediaChangeNum),

       iDoorClosedCount(0),

 	  iMediaChangeEnable(ETrue),

 	  iStackP(NULL)

 	{

 	iMediaDoorCloseReload=2; 	// Units: In theory-20ms, Actual-100ms

 	}

 #pragma warning( default : 4355 )

 TInt DWinsMMCMediaChange::Create()

 //

 // Initialiser.

 //

 	{	

 	return(DMediaChangeBase::Create());

 	}

 void DWinsMMCMediaChange::DoorOpenService()

 //

 // Handle the media change (this function, never postponed is called on media

 // change interrupt). 

 //

 	{

 	Disable();		// Disable interrupt until door closes again.

 	iDoorOpenDfc.Enque();

 	}

 void DWinsMMCMediaChange::DoDoorOpen()

 //

 // Handle media door open (called on media door open interrupt). 

 //

 	{

 	iDoorClosedCount=iMediaDoorCloseReload;

 	// Just start a ticklink to poll for door closing

 	iTickLink.Periodic(KMediaChangeTickInterval,DWinsMMCMediaChange::Tick,this);

     }

 void DWinsMMCMediaChange::DoDoorClosed()

 //

 // Handle media door closing (called on media door open interrupt).

 //

 	{

 	iTickLink.Cancel();	// Doesn't matter if wasn't enabled

 	Enable();	// Re-enable door interrupts

 	// While the door was open the user may have changed the card in slot 0

 	if (iStackP && *Wins::CurrentPBusDevicePtr()>=0)

 		iStackP->iCardInfo[0]=iStackP->iCardPool[*Wins::CurrentPBusDevicePtr()];

 	}

 void DWinsMMCMediaChange::ForceMediaChange()

 //

 // Force media change

 //

 	{

 	DoorOpenService();

 	}

 TMediaState DWinsMMCMediaChange::MediaState()

 //

 // Return status of media changed signal.

 //

 	{

 	if (iDoorClosedCount>0)

 		return(EDoorOpen);

 	return( (*Wins::MediaDoorOpenPtr())?EDoorOpen:EDoorClosed);

 	}

 void DWinsMMCMediaChange::Tick(TAny *aPtr)

 //

 // Called on the tick to poll for door closing (called on DFC).

 //

 	{

 	((DWinsMMCMediaChange*)aPtr)->TickService();

 	}

 void DWinsMMCMediaChange::TickService()

 //

 // Called on the tick to poll for door closing (called on DFC).

 //

 	{

 	__ASSERT_DEBUG(iDoorClosedCount>=0,DWinsSDStack::Panic(DWinsSDStack::EWinsMMCMediaChangeTickFault));

 	if (!(*Wins::MediaDoorOpenPtr()))

 		{

 		if (iDoorClosedCount > 0)

 			iDoorClosedCount--;

 		if (iDoorClosedCount == 0)

 			DoorClosedService();

 		}

 	else

 		iDoorClosedCount=iMediaDoorCloseReload; // Door open so start again.

 	}

 void DWinsMMCMediaChange::Enable()

 //

 // Enable media change 

 //

 	{

 	iMediaChangeEnable=ETrue;

 	}

 void DWinsMMCMediaChange::Disable()

 //

 // Disable media change

 //

 	{

 	iMediaChangeEnable=EFalse;

 	}

 void DWinsMMCMediaChange::MediaChangeCallBack(TAny *aPtr)

 //

 // Static called on media change

 //

 	{

 	DWinsMMCMediaChange* mc=(DWinsMMCMediaChange*)aPtr;

 	if (mc!=NULL&&mc->iMediaChangeEnable)

 		mc->DoorOpenService();

 	}

 // ======== TWinsCardInfo ========

 void TWinsCardInfo::GetCSD(TUint8* aResp) const

 	{

 	// Bits 127-96

 	TUint32 csd=(0x1<<30); 	/* CSD_STRUCTURE: CSD Version No 1.1 */

 	csd|=		(0x2<<26); 	/* SPEC_VERS: Version 2.1 */

 	csd|=		(0x0E<<16);	/* TAAC: 1mS */  

 	csd|=		(0x0A<<8);	/* NSAC: 1000 */  

 	csd|=		(0x59);		/* TRAN_SPEED: 5.0Mbit/s */  

 	TMMC::BigEndian4Bytes(&aResp[0],csd);

 	// Bits 95-64

 	const TUint32 ccc = 

 			KMMCCmdClassBasic | KMMCCmdClassBlockRead

 		|	KMMCCmdClassBlockWrite | KMMCCmdClassLockCard;

 	csd=		(ccc<<20); 	/* CCC: classes 0, 2, 4, and 7 */

 	csd|=		(0x9<<16); 	/* READ_BL_LEN: 512 bytes */

 	csd|=		(0x0<<15);	/* READ_BL_PARTIAL: No */  

 	csd|=		(0x0<<14);	/* WRITE_BLK_MISALIGN: No */  

 	csd|=		(0x0<<13);	/* READ_BLK_MISALIGN: No */  

 	csd|=		(0x0<<12);	/* DSR_IMP: No DSR */ 

 	csd|=		(0x0<<8);	/* C_SIZE: 1Mb */

 	csd|=		(0x7F);		/* C_SIZE: 1Mb (cont)*/  

 	TMMC::BigEndian4Bytes(&aResp[4],csd); 

 	// Bits 63-32

 	csd=		(3UL<<30); 	/* C_SIZE: 2Mb (cont) */

 	csd|=		(0x1<<27); 	/* VDD_R_CURR_MIN: 1mA */

 	csd|=		(0x1<<24);	/* VDD_R_CURR_MAX: 5mA */  

 	csd|=		(0x2<<21); 	/* VDD_W_CURR_MIN: 5mA */

 	csd|=		(0x3<<18);	/* VDD_W_CURR_MAX: 25mA */  

 	csd|=		(0x0<<15);	/* C_SIZE_MULT: 0 */  

 	if (! iIsSDCard)

 		{

 		csd|=		(0x0<<10);	/* SECTOR_SIZE: 1 write block */  

 		csd|=		(0x0<<5);	/* ERASE_GRP_SIZE: 1 sector */  

 		csd|=		(0x0);		/* WP_GRP_SIZE: 1 erase group */  

 		}

 	else

 		{

 		csd |= (0x00 << (46 - 32));	// ERASE_BLK_EN

 		csd |= (0x1f << (39 - 32));	// SECTOR_SIZE: 32 write blocks

 		csd |= (0x00 << (32 - 32));	// WP_GRP_SIZE: 1 erase sector.

 		}

 	TMMC::BigEndian4Bytes(&aResp[8],csd); 

 	// Bits 31-0

 	csd=		(0x0<<31); 	/* WP_GRP_ENABLE: No */

 	csd|=		(0x0<<29); 	/* DEFAULT_ECC: ? */

 	csd|=		(0x3<<26);	/* R2W_FACTOR: 8 */  

 	csd|=		(0x9<<22); 	/* WRITE_BL_LEN: 512 bytes */

 	csd|=		(0x0<<21);	/* WRITE_BL_PARTIAL: No */  

 	csd|=		(0x0<<15);	/* FILE_FORMAT_GRP: Hard disk */  

 	csd|=		(0x0<<14);	/* COPY: original */  

 	csd|=		(0x0<<13);	/* PERM_WRITE_PROTECT: No */  

 	csd|=		(0x0<<12);	/* TMP_WRITE_PROTECT: No */  

 	csd|=		(0x0<<10);	/* FILE_FORMAT: Hard disk */  

 	csd|=		(0x0<<8);	/* ECC: None */  

 	csd|=		(0x0<<1);	/* CRC: ? */  

 	csd|=		(0x1);		/* not used */  

 	TMMC::BigEndian4Bytes(&aResp[12],csd);

 	}

 // ======== DWinsMMCPsu ========

 DWinsMMCPsu::DWinsMMCPsu(TInt aVccNum, TInt aMcId)

 	: DMMCPsu(aVccNum, aMcId)

 	{}

 void DWinsMMCPsu::Init()

 //

 // Initialise the PSU

 //

     {

 	// Nothing to do

     }

 void DWinsMMCPsu::DoSetState(TPBusPsuState aState)

 //

 // Turn on/off the PSU. If it is possible to adjust the output voltage on this

 // PSU then retreive the required voltage level from TMMCPsu::iVoltageSetting

 // (which is in OCR register format).

 //

     {

     switch (aState)

         {

         case EPsuOff:

             break;

         case EPsuOnFull:

             break;

         case EPsuOnCurLimit:

             break;

         }

     }

 TInt DWinsMMCPsu::VoltageInMilliVolts()

 //

 // Return the level of the PSU (in mV) or -ve if error.

 //

     {

     return(0);

     }

 void DWinsMMCPsu::DoCheckVoltage()

 //

 // Check the voltage level of the PSU is as expected. Returns either KErrNone, KErrGeneral 

 // to indicate the pass/fail state or KErrNotReady if the voltage check isn't complete.

 //

     {

 	ReceiveVoltageCheckResult(KErrNone);

     }

 void DWinsMMCPsu::PsuInfo(TPBusPsuInfo &anInfo)

 //

 // Return machine info relating to the MMC PSU supply

 //

     {

 	anInfo.iVoltageSupported=0x00040000; // 3.0V (OCR reg. format).

 	anInfo.iMaxCurrentInMicroAmps=0;

 	anInfo.iVoltCheckInterval=0;

 	anInfo.iVoltCheckMethod=EPsuChkComparator;

     anInfo.iNotLockedTimeOut=0;  // Not enabled

 	anInfo.iInactivityTimeOut=5; // 5 Seconds

     }