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

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "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: CMscFileController implementation.

// 

// 

#include "mscfilecontroller.h"

#include "scsiprot.h"

#include "bulkonlytransport.h"

#include "debug.h"

CMscFileController* CMscFileController::NewL()

    {

    TRACE_FUNC

    CMscFileController* self = new (ELeave) CMscFileController;

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

/**

Destructor

*/

CMscFileController::~CMscFileController()

	{

	delete iProtocol;

	delete iTransport;

	delete iFsImage;

	}

CMscFileController::CMscFileController()

    {

    }

/**

Creates the drive manager, transport, protocol and server

@param aMaxDrives Maximum number of Mass Storage drives supported.

*/

void CMscFileController::ConstructL()

	{

	TRACE_FUNC_ENTRY

	iMaxDrives = 1; 

    TRACE_INFO(( _L( "Creating transport" ) ))

    iTransport = CBulkOnlyTransport::NewL(iMaxDrives, *this);

	TRACE_FUNC_EXIT

	}

void CMscFileController::SetupLogicalUnitL( const TDesC& aFileName, 

                                            const TInt /*aProtocol*/, 

                                            const TInt aLun )

    {

    TRACE_FUNC_ENTRY

    if ( aLun != 0 )

        {

        // More than one logical unit is not supported in this version

        LEAVE( KErrArgument );

        }

    if(iFsImage)

        {

        delete iFsImage;

        iFsImage = NULL;

        }

    iFsImage = CFileSystemImage::NewL( aFileName );

    TRACE_INFO(( _L( "Creating protocol" ) ))

    //create protocol according to aProtocol

    if(iProtocol)

        {

        delete iProtocol;

        iProtocol = NULL;

        }

    iProtocol = CScsiProtocol::NewL( *this );

    iTransport->RegisterProtocol( *iProtocol );

    iProtocol->RegisterTransport( iTransport );

    TRACE_FUNC_EXIT

    }

/**

Starts the transport and initializes the protocol.

@param aConfig Reference to Mass Storage configuration data

*/

TInt CMscFileController::Start( TMassStorageConfig& aConfig )

	{

	TRACE_FUNC_ENTRY

	//Save this value for use in the Reset method.

	iConfig = aConfig;

	TInt err = KErrNotReady;

	if ( iProtocol && iTransport )

		{

		TRACE_INFO(( _L( "Starting" ) ))

		((CScsiProtocol*)iProtocol)->SetScsiParameters(aConfig);

		err = iTransport->Start();

		}

	TRACE_FUNC_EXIT

	return err;

	}

/**

Stops the transport.

*/

TInt CMscFileController::Stop()

	{

	TRACE_FUNC_ENTRY

	TInt err = KErrNotReady;

	if ( iTransport )

		{

		TRACE_INFO(( _L( "Stopping" ) ))

		err = iTransport->Stop();

		}

	TRACE_FUNC_EXIT

	return err;

	}

/**

Delete the transport and protocol and start new ones.

*/

void CMscFileController::Reset()

	{

	TRACE_FUNC

	delete iProtocol;

	iProtocol = NULL;

	//Create transport and protocol and initialize them

	TRACE_INFO(_L("Creating  protocol"));

	TRAPD(err,iProtocol = CScsiProtocol::NewL(*this));

	err = err;

	__ASSERT_DEBUG(err==KErrNone, User::Invariant());

	iTransport->RegisterProtocol(*iProtocol);

	iProtocol->RegisterTransport(iTransport);

	}

CFileSystemImage* CMscFileController::FsImage( TInt aLun )

    {

    // Only 1 LUN supported in this version

    if ( aLun == 0 )

        {

        return iFsImage;

        }

    else

        {

        return NULL;

        }

    }