// 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

*/

#include <e32base.h>

#include "debug.h"

#include "msdebug.h"

#include "msctypes.h"

#include "mscutils.h"

#include "mtransport.h"

#include "mprotocol.h"

#include "tscsiclientreq.h"

#include "tscsiblockcmds.h"

// ****	MODE SENSE (6) ****

void TScsiClientModeSense6Resp::DecodeL(const TDesC8& aPtr)

	{

    __MSFNSLOG

    __SCSIPRINT(_L("--> SCSI MODE SENSE (6)"));

    __SCSIPRINT1(_L("len=%d"), aPtr.Length());

    // Mode Parameter List

    // SPC-3 7.4.2

    // - Mode Parameter Header

    // - Block Descriptor(s)

    // - Mode Page(s)

    // Mode Parameter Header

    // SPC-3 7.4.3

    // [0] Mode Data Length

    // [1] Medium Type

    // [2] Device-Specific Paramater

    // [3] Block Descriptor Length

    // validate length

    if (aPtr.Length() < KResponseLength)

        {

        User::Leave(KErrGeneral);

        }

    TInt modeDataLength = aPtr[0];

    if (aPtr.Length() - 1 > modeDataLength)

        {

        User::Leave(KErrGeneral);

        }

    TInt mediumType = aPtr[1];

    TUint8 deviceSpecificParameter = aPtr[2];

    // TInt blockDescriptorLength = aPtr[3];

    __SCSIPRINT2(_L("Medium Type=%d DSP=0x%x"), mediumType, deviceSpecificParameter);

    // [1] Medium Type

    // 0x00 for SBC

    if (mediumType == 0)

        {

        // [2] Device specific parameter

        // SBC-3 6.3.1

        // get the WP bit from the Device Specific parameters

        iWriteProtected = (deviceSpecificParameter & 0x80) ? ETrue : EFalse;

        }

    else

        {

        // unsupported medium type

        iWriteProtected = EFalse;

        }

    // [3] Block Descriptor Length

    // 0x00 for no descriptors

    // No Block Descriptors

    // No Mode Pages

	}

// ****	MODE SENSE (10) ****

void TScsiClientModeSense10Resp::DecodeL(const TDesC8& aPtr)

	{

    __MSFNSLOG

    __SCSIPRINT(_L("--> SCSI MODE SENSE (10)"));

    __SCSIPRINT1(_L("len=%d"), aPtr.Length());

    // Mode Parameter List

    // SPC-3 7.4.2

    // - Mode Parameter Header

    // - Block Descriptor(s)

    // - Mode Page(s)

    // Mode Parameter Header

    // SPC-3 7.4.3

    // [0] Mode Data Length

    // [1] Mode Data Length

    // [2] Medium Type

    // [3] Device-Specific Paramater

    // [4] Reserved

    // [5] Reserved

    // [6] Block Descriptor Length

    // [7] Block Descriptor Length

    // validate length

    if (aPtr.Length() < KResponseLength)

        {

        User::Leave(KErrGeneral);

        }

    TInt modeDataLength = BigEndian::Get16(&aPtr[0]);

    if (aPtr.Length() - 2 > modeDataLength)

        {

        User::Leave(KErrGeneral);

        }

    TInt mediumType = aPtr[2];

    TUint8 deviceSpecificParameter = aPtr[3];

    // TInt blockDescriptorLength = BigEndian::Get32(&aPtr[6]);;

    __SCSIPRINT2(_L("Medium Type=%d DSP=0x%x"), mediumType, deviceSpecificParameter);

    // [1] Medium Type

    // 0x00 for SBC

    if (mediumType == 0)

        {

        // [2] Device specific parameter

        // SBC-3 6.3.1

        // get the WP bit from the Device Specific parameters

        iWriteProtected = (deviceSpecificParameter & 0x80) ? ETrue : EFalse;

        }

    else

        {

        // unsupported medium type

        iWriteProtected = EFalse;

        }

    // [3] Block Descriptor Length

    // 0x00 for no descriptors

    // No Block Descriptors

    // No Mode Pages

	}

// ****	READ CAPACITY (10) ***

TInt TScsiClientReadCapacity10Req::EncodeRequestL(TDes8& aBuffer) const

    {

    __MSFNSLOG

    __SCSIPRINT(_L("<-- READ CAPACITY 10"));

    TInt length = TScsiClientReq::EncodeRequestL(aBuffer);

    if (iLba)

        {

        // PMI bit

        aBuffer[8] = 0x01;

        // LBA

        BigEndian::Put32(&aBuffer[2], iLba);

        }

    return length;

    }

void TScsiClientReadCapacity10Resp::DecodeL(const TDesC8& aPtr)

	{

    __MSFNSLOG

    __SCSIPRINT(_L("--> SCSI READ CAPACITY (10)"));

    iLba = BigEndian::Get32(&aPtr[0]);

    iBlockSize = BigEndian::Get32(&aPtr[4]);

	}

// ****	RdWr10 ****

TInt TScsiClientRdWr10Req::EncodeRequestL(TDes8& aBuffer) const

    {

    __MSFNSLOG

    TInt length = TScsiClientReq::EncodeRequestL(aBuffer);

    // PROTECT

    if (iProtect)

        aBuffer[1] = iProtect << 5;

    __SCSIPRINT2(_L("LBA=%08x LEN=%08x"), iLogicalBlockAddress, iBlockTransferLength);

    // LOGICAL BLOCK ADDRESS

    BigEndian::Put32(&aBuffer[2], iLogicalBlockAddress);

    // TRANSFER LENGTH

    BigEndian::Put16(&aBuffer[7], iBlockTransferLength);

    return length;

    }

// ****	READ (10) ****

TInt TScsiClientRead10Req::EncodeRequestL(TDes8& aBuffer) const

    {

    __MSFNSLOG

    __SCSIPRINT(_L("<-- SCSI READ (10)"));

	TInt length = TScsiClientRdWr10Req::EncodeRequestL(aBuffer);

    return length;

    }

// ****	START STOP UNIT ****

TInt TScsiClientStartStopUnitReq::EncodeRequestL(TDes8& aBuffer) const

    {

    __MSFNSLOG

    __SCSIPRINT(_L("--> SCSI START STOP UNIT"));

    TInt length = TScsiClientReq::EncodeRequestL(aBuffer);

    // byte 1 mask

    const TUint8 KImmedMask = 0x01;

    // byte 4 mask

    const TUint8 KStartMask = 0x01;

    const TUint8 KLoejMask = 0x02;

    if (iImmed)

        aBuffer[1] |= KImmedMask;

    if (iStart)

        aBuffer[4] |= KStartMask;

    if (iLoej)

        aBuffer[4] |= KLoejMask;

    return length;

    }

// ****	WRITE (10) ****

TInt TScsiClientWrite10Req::EncodeRequestL(TDes8& aBuffer) const

    {

    __MSFNSLOG

    __SCSIPRINT(_L("<-- SCSI WRITE 10"));

    TInt length = TScsiClientRdWr10Req::EncodeRequestL(aBuffer);

    return length;

    }