// Copyright (c) 2008-2010 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 <d32usbdi_hubdriver.h>
#include <d32usbdi.h>
#include <d32otgdi.h>
#include <d32usbdescriptors.h>
#include <d32usbtransfers.h>
#include "botmsctypes.h"
#include "msctypes.h"
#include "mtransport.h"
#include "mprotocol.h"
#include "cusbifacehandler.h"
#include "cbulkonlytransport.h"

#include "OstTraceDefinitions.h"
#ifdef OST_TRACE_COMPILER_IN_USE
#include "cusbifacehandlerTraces.h"
#endif

CUsbInterfaceHandler* CUsbInterfaceHandler::NewL(RUsbInterface &aInterface, RUsbPipe& aBulkPipeIn)
    {
    return new (ELeave) CUsbInterfaceHandler(aInterface, aBulkPipeIn);
    }

CUsbInterfaceHandler::CUsbInterfaceHandler(RUsbInterface &aInterface, RUsbPipe& aBulkPipeIn)
:   CActive(EPriorityStandard),
    iInterface(aInterface),
    iBulkPipeIn(aBulkPipeIn)
    {
    CActiveScheduler::Add(this);
    }

CUsbInterfaceHandler::~CUsbInterfaceHandler()
    {
    if (iState != ENone)
        {
        iState = ENone;
        iBotGetMaxLun.Complete(KErrCancel);
        Cancel();
        }
    }

/**
Cancellation of outstanding request
*/
void CUsbInterfaceHandler::DoCancel()
    {
    }

/**
Completion of USB transport request.
*/
void CUsbInterfaceHandler::RunL()
    {
    TInt error = iStatus.Int();

    if (error == KErrUsbStalled && iState == EGetMaxLun)
        {
        // Devices that do not support multiple LUNs may STALL this command
        OstTrace0(TRACE_SHOSTMASSSTORAGE_BOT, CUSBIFACEHANLDER_10,
                  "...KErrUsbStalled");
        iBulkPipeIn.ClearRemoteStall();
        error = KErrNone;
        }

    else if (error == KErrNone)
        {
        OstTrace0(TRACE_SHOSTMASSSTORAGE_BOT, CUSBIFACEHANLDER_11,
                  "...KErrNone");
        if (iState == EGetMaxLun)
            {
            OstTrace0(TRACE_SHOSTMASSSTORAGE_BOT, CUSBIFACEHANLDER_12,
                      "...sending GetMaxLun response");
            *ipGetMaxLun = iBuffer[0];
            }
        }
    else
        {
        OstTrace0(TRACE_SHOSTMASSSTORAGE_BOT, CUSBIFACEHANLDER_13,
                  "...completeing with KErrGeneral");
        error = KErrGeneral;
        }

    iState = ENone;
    iBotGetMaxLun.Complete(error);
    }


void CUsbInterfaceHandler::GetMaxLun(TLun* aMaxLun, const RMessage2& aMessage)
    {
    /* Send the Get max lun command in the ep0 */
    RUsbInterface::TUsbTransferRequestDetails reqDetails;
    _LIT8(KNullDesC8,"");
    iBotGetMaxLun = aMessage;
    iState = EGetMaxLun;
    ipGetMaxLun = aMaxLun;
    *ipGetMaxLun = 0;       // default response is MaxLUN=0

    reqDetails.iRequestType = 0xA1;
    reqDetails.iRequest = 0xFE;
    reqDetails.iValue = 0x0000;
    reqDetails.iIndex = 0x0000;
    reqDetails.iFlags = 0x04;       // Short transfer OK

    iBuffer.SetLength(1);
    iInterface.Ep0Transfer(reqDetails, KNullDesC8, iBuffer, iStatus);
    SetActive();
    }