usbmgmt/usbmgr/device/classdrivers/ncm/classimplementation/ncmpktdrv/pktdrv/src/ncmcomminterfacesenderandreceiver.cpp
/*
* Copyright (c) 2010 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:
* implementation for read and write data from share chunk LDD
*
*/
/**
@internalComponent
*/
#include "ncmcommunicationinterface.h"
#include "ncmengine.h"
#include "OstTraceDefinitions.h"
#ifdef OST_TRACE_COMPILER_IN_USE
#include "ncmcomminterfacesenderandreceiverTraces.h"
#endif
// ======== MEMBER FUNCTIONS ========
//
CNcmCommInterfaceSenderAndReceiver::CNcmCommInterfaceSenderAndReceiver(RDevUsbcScClient& aPort, CNcmCommunicationInterface& aComm)
: CActive(CActive::EPriorityStandard),
iPort(aPort),
iCommInterface(aComm),
iState(EUnInit)
{
CActiveScheduler::Add(this);
}
CNcmCommInterfaceSenderAndReceiver* CNcmCommInterfaceSenderAndReceiver::NewL(RDevUsbcScClient& aPort, CNcmCommunicationInterface& aComm)
{
return new(ELeave) CNcmCommInterfaceSenderAndReceiver(aPort, aComm);
}
CNcmCommInterfaceSenderAndReceiver::~CNcmCommInterfaceSenderAndReceiver()
{
Stop();
}
void CNcmCommInterfaceSenderAndReceiver::Start()
{
OstTraceFunctionEntry1( CNCMCOMMINTERFACESENDERANDRECEIVER_START_ENTRY, this );
TInt ret = iPort.OpenEndpoint(iEp0Buffer, KEp0Number);
if (ret != KErrNone)
{
OstTrace1( TRACE_FATAL, CNCMCOMMINTERFACESENDERANDRECEIVER_START1, "OpenEndpoint error %d", ret);
iCommInterface.ControlMsgError(EInternalError);
OstTraceFunctionExit1( CNCMCOMMINTERFACESENDERANDRECEIVER_START_EXIT, this );
return;
}
iState = EIdle;
OstTraceFunctionExit1( CNCMCOMMINTERFACESENDERANDRECEIVER_START_EXIT_DUP1, this );
}
void CNcmCommInterfaceSenderAndReceiver::Stop()
{
OstTraceFunctionEntry0( CNCMCOMMINTERFACESENDERANDRECEIVER_STOP_ENTRY );
iState = EIdle;
Cancel();
iEp0Buffer.Close();
OstTraceFunctionExit0( CNCMCOMMINTERFACESENDERANDRECEIVER_STOP_EXIT );
}
//
//Read data of aLength from LDD
//
TInt CNcmCommInterfaceSenderAndReceiver::Read(TRequestStatus& aStatus, TDes8& aBuf, TInt aLength)
{
OstTraceFunctionEntry1( CNCMCOMMINTERFACESENDERANDRECEIVER_READ_ENTRY, this );
OstTrace1( TRACE_NORMAL, CNCMCOMMINTERFACESENDERANDRECEIVER_READ, "CNcmCommInterfaceSenderAndReceiver::Read length %d", aLength );
iCompleteStatus = &aStatus;
*iCompleteStatus = KRequestPending;
if (iState != EIdle)
{
OstTrace0( TRACE_FATAL, CNCMCOMMINTERFACESENDERANDRECEIVER_READ_DUP1, "CNcmCommInterfaceSenderAndReceiver Read In Use" );
OstTraceFunctionExit1( CNCMCOMMINTERFACESENDERANDRECEIVER_READ_EXIT, this );
return KErrInUse;
}
iReceiveBuf = &aBuf;
iReceiveBuf->Zero();
iToReceiveLength = aLength;
iState = EReceiving;
ReadData();
OstTraceFunctionExit1( CNCMCOMMINTERFACESENDERANDRECEIVER_READ_EXIT_DUP1, this );
return KErrNone;
}
//
//write aLength data to ldd
//
TInt CNcmCommInterfaceSenderAndReceiver::Write(TRequestStatus& aStatus, TDesC8& aBuf, TInt aLength)
{
OstTraceFunctionEntry1( CNCMCOMMINTERFACESENDERANDRECEIVER_WRITE_ENTRY, this );
OstTrace1( TRACE_NORMAL, CNCMCOMMINTERFACESENDERANDRECEIVER_WRITE, "CNcmCommInterfaceSenderAndReceiver::Write length %d", aLength );
iCompleteStatus = &aStatus;
*iCompleteStatus = KRequestPending;
if (iState != EIdle)
{
OstTrace0( TRACE_FATAL, CNCMCOMMINTERFACESENDERANDRECEIVER_WRITE1, "CNcmCommInterfaceSenderAndReceiver::Write in Use" );
OstTraceFunctionExit1( CNCMCOMMINTERFACESENDERANDRECEIVER_WRITE_EXIT, this );
return KErrInUse;
}
TAny *buf;
TUint size;
TInt ret = iEp0Buffer.GetInBufferRange(buf, size);
if (ret != KErrNone)
{
OstTrace0( TRACE_FATAL, CNCMCOMMINTERFACESENDERANDRECEIVER_WRITE2, "CNcmCommInterfaceSenderAndReceiver::Write in Use" );
OstTraceFunctionExit1( CNCMCOMMINTERFACESENDERANDRECEIVER_WRITE_EXIT_DUP1, this );
return ret;
}
else if (size < aLength)
{
OstTrace0( TRACE_FATAL, CNCMCOMMINTERFACESENDERANDRECEIVER_WRITE3, "write data is bigger than ldd buffer size" );
OstTraceFunctionExit1( CNCMCOMMINTERFACESENDERANDRECEIVER_WRITE_EXIT_DUP2, this );
return KErrArgument;
}
TPtr8 writeBuf((TUint8 *)buf, size);
writeBuf.Copy(aBuf.Ptr(), aLength);
ret = iEp0Buffer.WriteBuffer(buf, writeBuf.Size(), ETrue, iStatus);
if (ret != KErrNone)
{
OstTrace1( TRACE_FATAL, CNCMCOMMINTERFACESENDERANDRECEIVER_WRITE4, "WriteBuffer error %d", ret );
OstTraceFunctionExit1( CNCMCOMMINTERFACESENDERANDRECEIVER_WRITE_EXIT_DUP3, this );
return ret;
}
iState = ESending;
SetActive();
OstTraceFunctionExit1( CNCMCOMMINTERFACESENDERANDRECEIVER_WRITE_EXIT_DUP4, this );
return KErrNone;
}
//
//Read data from USB share chunk LDD
//
void CNcmCommInterfaceSenderAndReceiver::ReadData()
{
OstTraceFunctionEntry1( CNCMCOMMINTERFACESENDERANDRECEIVER_READDATA_ENTRY, this );
TInt ret;
TAny* buf;
TUint8* receivebuf;
TUint receiveLen;
TBool zlp;
FOREVER
{
ret = iEp0Buffer.GetBuffer(buf, receiveLen, zlp, iStatus, iToReceiveLength);
receivebuf = (TUint8*)buf;
if (ret == TEndpointBuffer::KStateChange)
{
OstTrace0( TRACE_NORMAL, CNCMCOMMINTERFACESENDERANDRECEIVER_READDATA, "receive state change, discard it" );
continue;
}
else if (ret == KErrCompletion)
{
OstTrace1( TRACE_NORMAL, CNCMCOMMINTERFACESENDERANDRECEIVER_READDATA1, "read data length %d from ldd", receiveLen );
if (receiveLen > iToReceiveLength)
{
User::RequestComplete(iCompleteStatus, KErrOverflow);
iState = EIdle;
OstTrace0( TRACE_NORMAL, CNCMCOMMINTERFACESENDERANDRECEIVER_READDATA2,"data from ldd is bigger than receive buffer" );
OstTraceFunctionExit1( CNCMCOMMINTERFACESENDERANDRECEIVER_READDATA_EXIT, this );
return;
}
iReceiveBuf->Append(receivebuf, receiveLen);
iToReceiveLength -= receiveLen;
if (!iToReceiveLength)
{
User::RequestComplete(iCompleteStatus, KErrNone);
iState = EIdle;
OstTrace0( TRACE_NORMAL, CNCMCOMMINTERFACESENDERANDRECEIVER_READDATA3,"Complete read request" );
OstTraceFunctionExit1( CNCMCOMMINTERFACESENDERANDRECEIVER_READDATA_EXIT_DUP1, this );
return;
}
continue;
}
else if (ret == KErrNone)
{
break;
}
else
{
OstTrace1( TRACE_NORMAL, CNCMCOMMINTERFACESENDERANDRECEIVER_READDATA4, "GetBuffer error %d", ret);
User::RequestComplete(iCompleteStatus, KErrNone);
iState = EIdle;
OstTraceFunctionExit1( CNCMCOMMINTERFACESENDERANDRECEIVER_READDATA_EXIT_DUP2, this );
return;
}
}
SetActive();
OstTraceFunctionExit1( CNCMCOMMINTERFACESENDERANDRECEIVER_READDATA_EXIT_DUP3, this );
}
//
//RunL, looply receive data from share chunk LDD until receive all required data
//
void CNcmCommInterfaceSenderAndReceiver::RunL()
{
OstTraceFunctionEntry1( CNCMCOMMINTERFACESENDERANDRECEIVER_RUNL_ENTRY, this );
if(iStatus.Int() != KErrNone)
{
if (KErrCancel == iStatus.Int() )
{
OstTrace0( TRACE_NORMAL, CNCMCOMMINTERFACESENDERANDRECEIVER_RUNL,"CNcmCommInterfaceSenderAndReceiver, control channel is cancelled" );
}
else
{
OstTrace1( TRACE_NORMAL, CNCMCOMMINTERFACESENDERANDRECEIVER_RUNL1, "CNcmCommInterfaceSenderAndReceiver::RunL error %d", iStatus.Int());
}
User::RequestComplete(iCompleteStatus, iStatus.Int());
}
else
{
if (iState == EReceiving)
{
ReadData();
}
else if (iState == ESending)
{
User::RequestComplete(iCompleteStatus, KErrNone);
iState = EIdle;
OstTrace0( TRACE_NORMAL, CNCMCOMMINTERFACESENDERANDRECEIVER_RUNL2,"Complete write request" );
}
}
OstTraceFunctionExit1( CNCMCOMMINTERFACESENDERANDRECEIVER_RUNL_EXIT, this );
}
//
//Cancel the outgoing read request
//
void CNcmCommInterfaceSenderAndReceiver::DoCancel()
{
OstTraceFunctionEntry1( CNCMCOMMINTERFACESENDERANDRECEIVER_DOCANCEL_ENTRY, this );
iPort.ReadCancel(KUsbcScEndpointZero);
iPort.WriteCancel(KUsbcScEndpointZero);
OstTraceFunctionExit1( CNCMCOMMINTERFACESENDERANDRECEIVER_DOCANCEL_EXIT, this );
}