// Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of the License "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:

// f32\sfat\inc\sl_disk.h

// 

//

/**

 @file

 @internalTechnology

*/

#if !defined(__SL_DISK_H__)

#define __SL_DISK_H__

#include "sl_std.h"

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

class MWTCacheInterface;

class CAtaDisk : public CRawDisk

	{

public:

	static CAtaDisk* NewL(CFatMountCB& aFatMount);

     CAtaDisk(CFatMountCB& aFatMount);

	~CAtaDisk();

    void ConstructL();  

    void InitializeL();

public:

	void ReadCachedL(TInt64 aPos,TInt aLength,TDes8& aDes) const; 

	void WriteCachedL(TInt64 aPos,const TDesC8& aDes);

    void InvalidateUidCache();

    virtual void InvalidateUidCachePage(TUint64 aPos);

    void ReadL(TInt64 aPos,TInt aLength,const TAny* aTrg,const RMessagePtr2 &aMessage,TInt anOffset) const;

	void WriteL(TInt64 aPos,TInt aLength,const TAny* aSrc,const RMessagePtr2 &aMessage,TInt anOffset);

	virtual TInt GetLastErrorInfo(TDes8& aErrorInfo) const;

    MWTCacheInterface* DirCacheInterface();

private:

	TDriveInterface&    iDrive;     ///< Driver's interface to access the media

    MWTCacheInterface*  ipDirCache; ///< pointer to the FAT Directory cache object

    MWTCacheInterface*  iUidCache;  ///< pointer to the UID cache object

    };

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

class CRamDisk : public CRawDisk

	{

public:

    static CRamDisk* NewL(CFatMountCB& aFatMount);

	CRamDisk(CFatMountCB& aFatMount);

    void InitializeL();

public:

	void ReadCachedL(TInt64 aPos,TInt aLength,TDes8& aDes) const;

	void WriteCachedL(TInt64 aPos,const TDesC8& aDes);

	void ReadL(TInt64 aPos,TInt aLength,const TAny* aTrg,const RMessagePtr2 &aMessage,TInt anOffset) const;

	void WriteL(TInt64 aPos,TInt aLength,const TAny* aSrc,const RMessagePtr2 &aMessage,TInt anOffset);

private:

	inline TUint8 *RamDiskBase() const;

private:

	TUint8* iRamDiskBase; ///< pointer to the beginning of the RAM disk memory area

	};

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

#include "sl_disk.inl"

#endif //__SL_DISK_H__