sl@0: // Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of the License "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // e32\include\drivers\crashflashnand.h
sl@0: // 
sl@0: // WARNING: This file contains some APIs which are internal and are subject
sl@0: //          to change without notice. Such APIs should therefore not be used
sl@0: //          outside the Kernel and Hardware Services package.
sl@0: //
sl@0: 
sl@0: #ifndef __CRASHFLASHNAND_H__
sl@0: #define __CRASHFLASHNAND_H__
sl@0: #include <crashflash.h>
sl@0: 
sl@0: class TPib;
sl@0: class TPibExtension;
sl@0: 
sl@0: /**
sl@0: The maximum number of bytes in a nand flash main array
sl@0: @internalTechnology
sl@0: */
sl@0: const TUint KCFNandMaxBytesMain = 512;
sl@0: 
sl@0: /**
sl@0: An implementation of the CrashFlash interface for nand flash.
sl@0: @internalTechnology
sl@0: */
sl@0: class CrashFlashNand : public CrashFlash
sl@0: 	{
sl@0: public:
sl@0: 	//From CrashFlash
sl@0: 	virtual TInt Initialise();
sl@0: 	virtual void StartTransaction();
sl@0: 	virtual void EndTransaction();
sl@0: 	virtual void Write(const TDesC8& aDes);
sl@0: 	virtual void WriteSignature(const TDesC8& aDes);
sl@0: 	virtual void Read(TDes8& aDes);
sl@0: 	virtual void SetReadPos(TUint aPos);
sl@0: 	virtual void SetWritePos(const TUint aPos);
sl@0: 	virtual void EraseLogArea();
sl@0: 	virtual void EraseFlashBlock(const TUint aBlock);
sl@0: 	virtual TUint BytesWritten();
sl@0: #ifdef _CRASHLOG_COMPR	
sl@0: 	virtual TUint GetOutputLimit(void);
sl@0: 	virtual TUint GetLogOffset(void);
sl@0: #endif
sl@0: 
sl@0: public:
sl@0: 	/** @publishedPartner
sl@0: 	@released */
sl@0: 	virtual TInt GetDeviceId(TUint8& aDeviceId, TUint8& aManufacturerId)=0;
sl@0: 	/** @publishedPartner
sl@0: 	@released */
sl@0: 	virtual TInt DeviceRead(const TUint aPageAddress, TAny* aBuf, const TUint aLength)=0;
sl@0: 	/** @publishedPartner
sl@0: 	@released */
sl@0: 	virtual TInt DeviceWrite(const TUint aPageAddress, TAny* aBuf, const TUint aLength)=0;
sl@0: 	/** @publishedPartner
sl@0: 	@released */
sl@0: 	virtual TInt DeviceErase(const TUint aBlockAddress)=0;
sl@0: public:
sl@0: 	/** @publishedPartner
sl@0: 	@released */
sl@0: 	TUint iNumPagesPerBlock;
sl@0: 	/** @publishedPartner
sl@0: 	@released */
sl@0: 	TUint iNumBytesMain;
sl@0: 	/** @publishedPartner
sl@0: 	@released */
sl@0: 	TUint iNumBytesSpare;
sl@0: 	/** @publishedPartner
sl@0: 	@released */
sl@0: 	TUint iNumReservoirBlocks;
sl@0: 	/** @publishedPartner
sl@0: 	@released */
sl@0: 	TUint iNumBlocks;
sl@0: 	/** @publishedPartner
sl@0: 	@released */
sl@0: 	TUint iNumBytesPage;
sl@0: 
sl@0: protected:
sl@0: 	/** @publishedPartner
sl@0: 	@released */
sl@0: 	virtual TInt VariantInitialise()=0;
sl@0: 
sl@0: private:
sl@0: 	TInt InitialiseFlashParameters(const TUint8 aDevId, const TUint8 aManId);
sl@0: 	TInt ReadPib(TPib& aPib, TPibExtension& aPibExtension, TUint& aLastGoodBlock);
sl@0: 	TInt ParsePib(TPib& aPib, TPibExtension& aPibExt);
sl@0: 	void DoWriteRead();	
sl@0: 	void DoWrite();
sl@0: 	void DoRead();
sl@0: private:
sl@0: 	TBool iIs16Bit;
sl@0: 	TUint8 iLogWordSize;
sl@0: 
sl@0: 	TUint iCrashLogStartBlock;
sl@0: 	TUint iNumCrashLogBlocks;
sl@0: 
sl@0: 	TUint iWriteBufIndex;
sl@0: 	TUint iReadBufIndex;
sl@0: 	TUint iWritePageIndex;
sl@0: 	TUint iReadPageIndex;
sl@0: 	TUint iWriteTotal;
sl@0: 
sl@0: 	TUint8 iWriteBuf[KCFNandMaxBytesMain];
sl@0: 	TUint8 iReadBuf[KCFNandMaxBytesMain];
sl@0: 	};
sl@0: 
sl@0: #endif