// 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:

 // Provides utilities to build SCSI commands

 // 

 //

 /**

  @file

  @internalTechnology

 */

 #ifndef __SCSICMDBUILDER_H__

 #define __SCSICMDBUILDER_H__

 #include <e32std.h>

 #include <f32file.h>

 const TInt KScsiCmdMaxLen 	= 10;

 const TInt KCbwLength       = 31;

 const TInt KCswLength       = 13;

 const TInt KKiloBytes		= 1024;

 GLREF_D TBuf8<KScsiCmdMaxLen> scsiCmdBuf;

 /**

  builds read/write SCSI command

  */

 GLREF_C void BuildReadWrite(TInt aFlag, TInt aLogicalBlkAddr, TInt aTotalBlks);

 /**

  Builds prevent/allow medium removal SCSI command

  @param aFlag: indicating if the command is to allow or prevent medium removal

  */ 

 GLREF_C void BuildMediumRemoval(TInt aFlag);

 /**

  Builds a test unit ready SCSI command

  */

 GLREF_C void BuildTestUnitReady();

 /**

  Builds a start/stop unit command

  @param aFlag: indicating if the command is to start or stop unit

  */ 

 GLREF_C void BuildStartStopUnit(TInt aFlag);

 /**

  Copy an int. Little endian

  @param dest the destination

  @param source the source

  */

 GLREF_C void fillInt(TUint8* dest, TInt source);

 /**

  Extracts an integer from a buffer. Assume little endian 

  */

 GLREF_C TInt extractInt(const TUint8* aBuf);

 /**

  Builds a CBW message

  @param aCbw:            stores CBW

  @param aDCBWTag:        a command block tag sent by the host. Used to associates a CSW

          				 with corresponding CBW

  @param aDataTranferLen: the number of bytes the host expects to transfer

  @param aInOutFlag:      value for bmCBWFlags field, indicating the direction of transfer

  @param aCBWCB:			 the actual command to be wrapped

  @param aTestLun:	 	 local unit number

  */

 GLREF_C void createCBW(TDes8& aCbw, TInt aDCBWTag, TInt aDataTransferLen, TUint8 aInOutFlag, TDes8& aCBWCB, TUint8 aTestLun);

 #endif // __SCSICMDBUILDER_H__