// Copyright (c) 2004-2009 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:

// e32test\mmu\d_sharedchunk.h

// 

//

#ifndef __D_SHAREDCHUNK_H__

#define __D_SHAREDCHUNK_H__

#include <e32cmn.h>

#ifndef __KERNEL_MODE__

#include <e32std.h>

#endif

_LIT(KSharedChunkLddName,"D_SHAREDCHUNK");

enum TCreateFlags

	{

	ESingle				= 0x00,

	EMultiple			= 0x01,

	EOwnsMemory			= 0x02,

	EBlocking			= 0x00,

	EBuffered			= 0x04,

	ECached				= 0x08,

	EBadType			= 0x80,

	ECreateFlagsMask	= 0xff

	};

enum TCommitType

	{

	EDiscontiguous			= 0x00,

	EContiguous				= 0x01,

	EPhysicalMask			= 0x02,

	EDiscontiguousPhysical	= EDiscontiguous|EPhysicalMask,

	EContiguousPhysical		= EContiguous|EPhysicalMask,

	EBadPhysicalAddress		= 0x04,

	ECommitTypeMask			= 0x0f

	};

class RSharedChunkLdd : public RBusLogicalChannel

	{

public:

	enum TControl

		{

		ECreateChunk,

		EGetChunkHandle,

		ECommitMemory,

		ECloseChunk,

		ECheckMemory,

		EReadMemory,

		EWriteMemory,

		EDfcReadWrite,

		EIsrReadWrite,

		EIsDestroyed,

		ETestOpenAddress,

		ETestOpenHandle,

		ETestAddress,

		ECloseChunkHandle,

		EChunkUserBase,

		EChunkCloseAndFree,

		};

#ifndef __KERNEL_MODE__

public:

	inline TInt Open()

		{ return DoCreate(KSharedChunkLddName,TVersion(),KNullUnit,NULL,NULL,EOwnerProcess,ETrue); }

	inline TInt CreateChunk(TInt aSize, TAny** aKernelAddress=0)

		{ return DoControl(ECreateChunk,(TAny*)aSize,aKernelAddress); }

	inline TInt GetChunkHandle(RChunk& aChunk)

		{ return aChunk.SetReturnedHandle(DoControl(EGetChunkHandle)); }

	inline TInt CommitMemory(TInt aOffset, TInt aSize)

		{ return DoControl(ECommitMemory,(TAny*)aOffset,(TAny*)aSize); }

	inline TInt CloseChunk()

		{ return DoControl(ECloseChunk); }

	inline TInt CheckMemory(TInt aOffset)

		{ return DoControl(ECheckMemory,(TAny*)aOffset); }

	inline TInt ReadMemory(TInt aOffset,TUint32& aValue)

		{ return DoControl(EReadMemory,(TAny*)aOffset,&aValue); }

	inline TInt WriteMemory(TInt aOffset,TUint32 aValue)

		{ return DoControl(EWriteMemory,(TAny*)aOffset,(TAny*)aValue); }

	inline TInt DfcReadWrite(TInt aOffset,TUint32& aValue)

		{ return DoControl(EDfcReadWrite,(TAny*)aOffset,&aValue); }

	inline TInt IsrReadWrite(TInt aOffset,TUint32& aValue)

		{ return DoControl(EIsrReadWrite,(TAny*)aOffset,&aValue); }

	inline TBool IsDestroyed()

		{ return DoControl(EIsDestroyed); }

	inline TInt TestOpenAddress(TAny* aAddress)

		{ return DoControl(ETestOpenAddress,aAddress); }

	inline TInt TestOpenHandle(TInt aHandle)

		{ return DoControl(ETestOpenHandle,(TAny*)aHandle); }

	inline TInt TestAddress(TInt aOffset, TInt aSize)

		{ return DoControl(ETestAddress,(TAny*)aOffset,(TAny*)aSize); }

	inline TInt CloseChunkHandle(RChunk aChunk)

		{ return DoControl(ECloseChunkHandle,(TAny*)aChunk.Handle()); }

	inline TInt GetChunkUserBase(TAny *aAddress)

		{ return DoControl(EChunkUserBase, aAddress); }

	inline TInt TestChunkCloseAndFree()

		{ return DoControl(EChunkCloseAndFree); }

#endif

	};

#endif