// Copyright (c) 2008-2009 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:

//

/**

 @file

 @internalTechnology

*/

#ifndef TSCSICLIENTREQ_H

#define TSCSICLIENTREQ_H

/**

Data type for GROUP CODE

SAM-2 5.2.2

SPC-3 4.3.4.1

*/

typedef TUint8 TGroupCode;

/**

Data type for ALLOCATION LENGTH

SPC-2 4.3.4.6

SPC-3 4.3.4.6

*/

typedef TUint TAllocationLength;    // 1 Byte

/**

Base class to decode SCSI RESPONSE

*/

class TScsiClientResp: public MClientCommandServiceResp

    {

public:

    TScsiClientResp() {};

    };

/**

Base class to encode a SCSI REQUEST which implements the SCSI header encoding

*/

class TScsiClientReq: public MClientCommandServiceReq

    {

public:

    /** SCSI OPERATION CODE */

    enum TOperationCode

        {

        ETestUnitReady			= 0x00,

        ERequestSense			= 0x03,

        EInquiry 				= 0x12,

        EModeSense6				= 0x1A,

        EStartStopUnit			= 0x1B,

        EPreventMediaRemoval	= 0x1E,

        EReadFormatCapacities	= 0x23,

        EReadCapacity10			= 0x25,

        ERead10 				= 0x28,

        EWrite10				= 0x2A,

        EVerify10				= 0x2f,

        EModeSense10			= 0x5A,

        EUndefinedCommand		= 0xFF

        };

    TScsiClientReq(TOperationCode aOperationCode);

    virtual TInt EncodeRequestL(TDes8& aBuffer) const;

private:

    TUint8 GetControlByte() const;

    TGroupCode GetGroupCode() const;

    TBool IsDataDirectionOut() const;

    TUint32 DataLength() const;

public:

    /** SCSI OPERATION CODE of CDB byte, SAM-2 5.2.2 */

    const TOperationCode iOperationCode;

    /** SCSI NACA field of CDB CONTROL Byte. SAM-2 5.2.3 */

    TBool iNaca;

    /** SCSI LINK field of CDB CONTROL Byte. SAM-2 5.2.3 */

    TBool iLink;

    };

#include "tscsiclientreq.inl"

#endif // TSCSICLIENTREQ_H