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/*
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* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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* implementation of NCM communication interface class
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*
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*/
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#include <es_sock.h>
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#include "ncmcommunicationinterface.h"
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#include "ncmnotificationdescriptor.h"
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#include "OstTraceDefinitions.h"
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#ifdef OST_TRACE_COMPILER_IN_USE
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#include "ncmcommunicationinterfaceTraces.h"
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#endif
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const TUint KUsbRequestLengthIdx = 6;
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const TUint KUsbRequestTypeIdx = 1;
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const TInt KIntEndpoint = 1;
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const TInt KNotificationRequestType = 0xA1;
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#if defined(_DEBUG)
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_LIT(KNcmCommInterfacePanic, "UsbNcmComm"); // must be <=16 chars
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#endif
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// Panic codes
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enum TNcmCommPanicCode
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{
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ENcmCommWrongSetupLength = 1,
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ENcmCommWrongDataLength,
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ENcmCommWriteError,
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ENcmCMEndMark
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};
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// ======== MEMBER FUNCTIONS ========
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//
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CNcmCommunicationInterface::CNcmCommunicationInterface(MNcmControlObserver& aEngine, RDevUsbcScClient& aLdd) : CActive(CActive::EPriorityHigh),
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iEngine(aEngine), iPort(aLdd)
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{
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CActiveScheduler::Add(this);
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}
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void CNcmCommunicationInterface::ConstructL()
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{
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iSenderAndReceiver = CNcmCommInterfaceSenderAndReceiver::NewL(iPort, *this);
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}
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CNcmCommunicationInterface* CNcmCommunicationInterface::NewL(MNcmControlObserver& aEngine, RDevUsbcScClient& aLdd)
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{
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OstTraceFunctionEntry0( CNCMCOMMUNICATIONINTERFACE_NEWL_ENTRY );
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CNcmCommunicationInterface *self=new (ELeave) CNcmCommunicationInterface(aEngine, aLdd);
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CleanupStack::PushL(self);
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self->ConstructL();
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CleanupStack::Pop();
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OstTraceFunctionExit0( CNCMCOMMUNICATIONINTERFACE_NEWL_EXIT );
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return self;
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}
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CNcmCommunicationInterface::~CNcmCommunicationInterface()
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{
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OstTraceFunctionEntry1( CNCMCOMMUNICATIONINTERFACE_CNCMCOMMUNICATIONINTERFACE_ENTRY, this );
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Cancel();
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delete iSenderAndReceiver;
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OstTraceFunctionExit1( CNCMCOMMUNICATIONINTERFACE_CNCMCOMMUNICATIONINTERFACE_EXIT, this );
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}
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//
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//Start the control channel of NCM
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//
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TInt CNcmCommunicationInterface::Start()
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{
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OstTraceFunctionEntry1( CNCMCOMMUNICATIONINTERFACE_START_ENTRY, this );
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if (iStarted)
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{
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OstTrace0( TRACE_WARNING, CNCMCOMMUNICATIONINTERFACE_START, "CNcmCommunicationInterface, already started!" );
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OstTraceFunctionExit1( CNCMCOMMUNICATIONINTERFACE_START_EXIT, this );
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return KErrInUse;
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}
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TInt ret = GetInterfaceNumber();
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if (ret != KErrNone)
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{
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OstTrace1( TRACE_FATAL, CNCMCOMMUNICATIONINTERFACE_START1, "GetInterfaceNumber failed ret=%d", ret);
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OstTraceFunctionExit1( CNCMCOMMUNICATIONINTERFACE_START_EXIT_DUP1, this );
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return ret;
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}
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iStarted = ETrue;
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iRWState = EStateInitial;
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iSenderAndReceiver->Start();
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//force a call to RunL
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SetActive();
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TRequestStatus* status=&iStatus;
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User::RequestComplete(status, KErrNone);
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OstTraceFunctionExit1( CNCMCOMMUNICATIONINTERFACE_START_EXIT_DUP2, this );
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return KErrNone;
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}
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//
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//Listen on the ep0 to receive the NCM control message from host
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//
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void CNcmCommunicationInterface::ReadSetup()
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{
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OstTraceFunctionEntry1( CNCMCOMMUNICATIONINTERFACE_READSETUP_ENTRY, this );
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iRWState = EStateReadSetup;
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iRequestType = 0;
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iDataStageLength = 0;
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TInt ret = iSenderAndReceiver->Read(iStatus, iSetupPacket, KSetupPacketLength);
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if (ret != KErrNone)
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{
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OstTrace1( TRACE_FATAL, CNCMCOMMUNICATIONINTERFACE_READSETUP, "read setup packet error %d", ret);
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ControlMsgError(EInternalError);
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OstTraceFunctionExit1( CNCMCOMMUNICATIONINTERFACE_READSETUP_EXIT, this );
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return;
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}
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SetActive();
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OstTraceFunctionExit1( CNCMCOMMUNICATIONINTERFACE_READSETUP_EXIT_DUP1, this );
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}
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//
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//decode the setup packet to get command information.
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//
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void CNcmCommunicationInterface::DecodeSetup()
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{
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OstTraceFunctionEntry1( CNCMCOMMUNICATIONINTERFACE_DECODESETUP_ENTRY, this );
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__ASSERT_DEBUG(iSetupPacket.Length()==KSetupPacketLength,
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User::Panic(KNcmCommInterfacePanic, ENcmCommWrongSetupLength));
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iRequestType = iSetupPacket[KUsbRequestTypeIdx];
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iDataStageLength = LittleEndian::Get16(&iSetupPacket[KUsbRequestLengthIdx]);
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switch (iRequestType)
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{
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case EGetNtbParameters:
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if (iDataStageLength != KNtbParamStructLength)
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{
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ControlMsgError(EInvalidLengthToRead);
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break;
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}
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iEngine.HandleGetNtbParam(iDataBuffer);
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__ASSERT_DEBUG(iDataBuffer.Length()==KNtbParamStructLength,
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User::Panic(KNcmCommInterfacePanic, ENcmCommWrongDataLength));
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WriteDataIn();
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break;
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case EGetNtbInputSize:
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if (iDataStageLength != KNtbInputSizeStructLength)
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{
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ControlMsgError(EInvalidLengthToRead);
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break;
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}
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iEngine.HandleGetNtbInputSize(iDataBuffer);
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__ASSERT_DEBUG(iDataBuffer.Length()==KNtbInputSizeStructLength,
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User::Panic(KNcmCommInterfacePanic, ENcmCommWrongDataLength));
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WriteDataIn();
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break;
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case ESetNtbInputSize:
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if (iDataStageLength != KNtbInputSizeStructLength)
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{
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ControlMsgError(EInvalidLengthToRead);
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break;
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}
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ReadDataOut();
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break;
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default:
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TInt ret = iPort.EndpointZeroRequestError();
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OstTrace1( TRACE_ERROR, CNCMCOMMUNICATIONINTERFACE_DECODESETUP, "unsupport request, halt endpoint with EndpointZeroRequestError %d", ret);
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ReadSetup();
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break;
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}
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OstTraceFunctionExit1( CNCMCOMMUNICATIONINTERFACE_DECODESETUP_EXIT, this );
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}
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//
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//Read the raw data of a control request message from host
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//
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void CNcmCommunicationInterface::ReadDataOut()
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{
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OstTraceFunctionEntry1( CNCMCOMMUNICATIONINTERFACE_READDATAOUT_ENTRY, this );
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iRWState = EStateReadDataout;
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iSenderAndReceiver->Read(iStatus, iDataBuffer, iDataStageLength);
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SetActive();
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OstTraceFunctionExit1( CNCMCOMMUNICATIONINTERFACE_READDATAOUT_EXIT, this );
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}
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//
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//Parse the data out from host to specific NCM control message
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//
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void CNcmCommunicationInterface::ParseDataOut()
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{
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OstTraceFunctionEntry1( CNCMCOMMUNICATIONINTERFACE_PARSEDATAOUT_ENTRY, this );
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__ASSERT_DEBUG(iDataBuffer.Length()>0,
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User::Panic(KNcmCommInterfacePanic, ENcmCommWrongDataLength));
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TInt ret = KErrNone;
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switch (iRequestType)
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{
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case ESetNtbInputSize:
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ret = iEngine.HandleSetNtbInputSize(iDataBuffer);
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break;
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default:
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ret = KErrNotSupported;
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break;
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}
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if (ret == KErrNone)
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{
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iPort.SendEp0StatusPacket();
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}
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else
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{
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OstTrace1( TRACE_WARNING, CNCMCOMMUNICATIONINTERFACE_PARSEDATAOUT, "handle request iRequestType error %d stall endpoint", ret);
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iPort.EndpointZeroRequestError();
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}
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ReadSetup();
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OstTraceFunctionExit1( CNCMCOMMUNICATIONINTERFACE_PARSEDATAOUT_EXIT, this );
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}
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//
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// send connection status notification, aConnected = ETrue if connection up, otherwise EFalse if connection discnnected
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//
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TInt CNcmCommunicationInterface::SendConnectionNotification(TBool aConnected)
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{
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OstTraceFunctionEntry1( CNCMCOMMUNICATIONINTERFACE_SENDCONNECTIONNOTIFICATION_ENTRY, this );
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const TUint8 KConnectionNotificationCode = 0x00;
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const TUint16 KConnectedCode = 0x0001;
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const TUint16 KDisconnectCode = 0x0000;
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TUSBNotificationNetworkConnection netNotify;
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netNotify.iRequestType = KNotificationRequestType;
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netNotify.iNotification = KConnectionNotificationCode;
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netNotify.iValue = (aConnected)?KConnectedCode:KDisconnectCode;
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netNotify.iIndex = iInterfaceNumber;
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netNotify.iLength = 0;
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return WriteInterruptData(KIntEndpoint, netNotify.Des(),
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netNotify.Des().Length());
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}
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//
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// send speed notification
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//
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TInt CNcmCommunicationInterface::SendSpeedNotification(TInt aUSBitRate, TInt aDSBitRate)
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{
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OstTraceFunctionEntry1( CNCMCOMMUNICATIONINTERFACE_SENDSPEEDNOTIFICATION_ENTRY, this );
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const TUint8 KSpeedNotificationCode = 0x2A;
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TUSBNotificationConnectionSpeedChange speedNotify;
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speedNotify.iRequestType = KNotificationRequestType;
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speedNotify.iNotification = KSpeedNotificationCode;
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speedNotify.iValue = 0x00;
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speedNotify.iIndex = iInterfaceNumber;
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speedNotify.iLength = 0x08;
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speedNotify.iUSBitRate = aUSBitRate;
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speedNotify.iDSBitRate = aDSBitRate;
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return WriteInterruptData(KIntEndpoint, speedNotify.Des(),
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speedNotify.Des().Length());
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}
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//
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//According to the receving request message, send back a response to the host
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//
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void CNcmCommunicationInterface::WriteDataIn()
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{
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OstTraceFunctionEntry1( CNCMCOMMUNICATIONINTERFACE_WRITEDATAIN_ENTRY, this );
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iRWState = EStateWriteDatain;
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TInt ret = iSenderAndReceiver->Write(iStatus, iDataBuffer, iDataBuffer.Length());
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__ASSERT_DEBUG(ret==KErrNone, User::Panic(KNcmCommInterfacePanic, ENcmCommWriteError));
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SetActive();
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OstTraceFunctionExit1( CNCMCOMMUNICATIONINTERFACE_WRITEDATAIN_EXIT, this );
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}
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//
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//Cancel the outgoing request
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//
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void CNcmCommunicationInterface::DoCancel()
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{
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OstTraceFunctionEntry1( CNCMCOMMUNICATIONINTERFACE_DOCANCEL_ENTRY, this );
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TRequestStatus* status = &iStatus;
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User::RequestComplete(status, KErrCancel);
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OstTraceFunctionExit1( CNCMCOMMUNICATIONINTERFACE_DOCANCEL_EXIT, this );
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}
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//
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//Stop the control channel to stop the NCM
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//
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void CNcmCommunicationInterface::Stop()
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{
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OstTraceFunctionEntry1( CNCMCOMMUNICATIONINTERFACE_STOP_ENTRY, this );
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iStarted = EFalse;
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iSenderAndReceiver->Stop();
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Cancel();
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OstTraceFunctionExit1( CNCMCOMMUNICATIONINTERFACE_STOP_EXIT, this );
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}
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//
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//AO RunL
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//
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void CNcmCommunicationInterface::RunL()
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{
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OstTraceFunctionEntry1( CNCMCOMMUNICATIONINTERFACE_RUNL_ENTRY, this );
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if(iStatus.Int() != KErrNone)
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{
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if (KErrCancel == iStatus.Int() )
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{
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}
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else
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{
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ControlMsgError(EInternalError);
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}
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OstTraceFunctionExit1( CNCMCOMMUNICATIONINTERFACE_RUNL_EXIT, this );
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return;
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}
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switch(iRWState)
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{
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case EStateInitial:
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{
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ReadSetup();
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break;
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}
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case EStateReadSetup:
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{
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DecodeSetup();
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break;
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}
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case EStateReadDataout:
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{
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ParseDataOut();
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break;
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}
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case EStateWriteDatain:
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{
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ReadSetup();
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break;
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}
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}
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OstTraceFunctionExit1( CNCMCOMMUNICATIONINTERFACE_RUNL_EXIT_DUP1, this );
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}
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//
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//Any fatal error occurs when reading/sending a NCM control message via USB interface
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//
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void CNcmCommunicationInterface::ControlMsgError(TNcmCommErrorCode aCode)
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{
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OstTraceFunctionEntry1( CNCMCOMMUNICATIONINTERFACE_CONTROLMSGERROR_ENTRY, this );
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OstTrace1( TRACE_NORMAL, CNCMCOMMUNICATIONINTERFACE_CONTROLMSGERROR, "CNcmCommunicationInterface, Handle Ncm Control Message with err=%d", aCode);
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// Stall bus, there's nothing else we can do
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iPort.EndpointZeroRequestError();
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iEngine.ControlError(aCode);
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OstTraceFunctionExit1( CNCMCOMMUNICATIONINTERFACE_CONTROLMSGERROR_EXIT, this );
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}
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TInt CNcmCommunicationInterface::WriteInterruptData(TInt aEndPoint,
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TDesC8& aDes,
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TInt aLength)
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{
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OstTraceFunctionEntry1( CNCMCOMMUNICATIONINTERFACE_WRITEINTERRUPTDATA_ENTRY, this );
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TInt ret;
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RTimer timer;
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ret = timer.CreateLocal();
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if ( ret )
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{
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OstTrace1( TRACE_FATAL, CNCMCOMMUNICATIONINTERFACE_WRITEINTERRUPTDATA, "\ttimer.CreateLocal = %d- returning", ret);
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OstTraceFunctionExit1( CNCMCOMMUNICATIONINTERFACE_WRITEINTERRUPTDATA_EXIT, this );
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return ret;
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}
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TRequestStatus status;
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TRequestStatus timerStatus;
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TEndpointBuffer epBuffer;
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ret = iPort.OpenEndpoint(epBuffer, aEndPoint);
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if (ret != KErrNone)
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{
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timer.Close();
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OstTraceFunctionExit1( CNCMCOMMUNICATIONINTERFACE_WRITEINTERRUPTDATA_EXIT_DUP1, this );
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return ret;
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}
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TAny *buf;
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TUint size;
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ret = epBuffer.GetInBufferRange(buf, size);
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if (ret != KErrNone)
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{
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426 |
timer.Close();
|
|
427 |
OstTraceFunctionExit1( CNCMCOMMUNICATIONINTERFACE_WRITEINTERRUPTDATA_EXIT_DUP2, this );
|
|
428 |
return ret;
|
|
429 |
}
|
|
430 |
else if (size < aLength)
|
|
431 |
{
|
|
432 |
timer.Close();
|
|
433 |
OstTraceFunctionExit1( CNCMCOMMUNICATIONINTERFACE_WRITEINTERRUPTDATA_EXIT_DUP3, this );
|
|
434 |
return KErrArgument;
|
|
435 |
}
|
|
436 |
|
|
437 |
TPtr8 writeBuf((TUint8 *)buf, size);
|
|
438 |
writeBuf.Copy(aDes.Ptr(), aLength);
|
|
439 |
ret = epBuffer.WriteBuffer(buf, writeBuf.Size(), ETrue, status);
|
|
440 |
if (ret != KErrNone)
|
|
441 |
{
|
|
442 |
timer.Close();
|
|
443 |
OstTraceFunctionExit1( CNCMCOMMUNICATIONINTERFACE_WRITEINTERRUPTDATA_EXIT_DUP4, this );
|
|
444 |
return ret;
|
|
445 |
}
|
|
446 |
|
|
447 |
const TInt KWriteDataTimeout = 1000000;
|
|
448 |
timer.After(timerStatus, KWriteDataTimeout);
|
|
449 |
User::WaitForRequest(status, timerStatus);
|
|
450 |
if ( timerStatus != KRequestPending )
|
|
451 |
{
|
|
452 |
// Timeout occurred, silently ignore error condition.
|
|
453 |
// Assuming that the line has been disconnected
|
|
454 |
OstTrace0( TRACE_ERROR, CNCMCOMMUNICATIONINTERFACE_WRITEINTERRUPTDATA1, "CNcmCommunicationInterface::WriteInterruptData() - Timeout occurred");
|
|
455 |
iPort.WriteCancel(epBuffer.BufferNumber());
|
|
456 |
User::WaitForRequest(status);
|
|
457 |
ret = timerStatus.Int();
|
|
458 |
}
|
|
459 |
else
|
|
460 |
{
|
|
461 |
OstTrace0( TRACE_ERROR, CNCMCOMMUNICATIONINTERFACE_WRITEINTERRUPTDATA2, "CNcmCommunicationInterface::WriteInterruptData() - Write completed");
|
|
462 |
timer.Cancel();
|
|
463 |
User::WaitForRequest(timerStatus);
|
|
464 |
ret = status.Int();
|
|
465 |
}
|
|
466 |
|
|
467 |
epBuffer.Close();
|
|
468 |
timer.Close();
|
|
469 |
OstTraceFunctionExit1( CNCMCOMMUNICATIONINTERFACE_WRITEINTERRUPTDATA_EXIT_DUP5, this );
|
|
470 |
return ret;
|
|
471 |
}
|
|
472 |
|
|
473 |
|
|
474 |
//
|
|
475 |
// Get interface number
|
|
476 |
//
|
|
477 |
TInt CNcmCommunicationInterface::GetInterfaceNumber()
|
|
478 |
{
|
|
479 |
OstTraceFunctionEntry1( CNCMCOMMUNICATIONINTERFACE_GETINTERFACENUMBER_ENTRY, this );
|
|
480 |
|
|
481 |
TInt interfaceSize = 0;
|
|
482 |
// 2 is where the interface number is, according to the LDD API
|
|
483 |
const TInt intNumOffsetInDes = 2;
|
|
484 |
|
|
485 |
// 0 means the main interface in the LDD API
|
|
486 |
TInt res = iPort.GetInterfaceDescriptorSize(0, interfaceSize);
|
|
487 |
|
|
488 |
if ( res )
|
|
489 |
{
|
|
490 |
OstTraceFunctionExit1( CNCMCOMMUNICATIONINTERFACE_GETINTERFACENUMBER_EXIT, this );
|
|
491 |
return res;
|
|
492 |
}
|
|
493 |
|
|
494 |
HBufC8* interfaceBuf = HBufC8::New(interfaceSize);
|
|
495 |
if ( !interfaceBuf )
|
|
496 |
{
|
|
497 |
OstTraceFunctionExit1( CNCMCOMMUNICATIONINTERFACE_GETINTERFACENUMBER_EXIT_DUP1, this );
|
|
498 |
return KErrNoMemory;
|
|
499 |
}
|
|
500 |
|
|
501 |
TPtr8 interfacePtr = interfaceBuf->Des();
|
|
502 |
interfacePtr.SetLength(0);
|
|
503 |
// 0 means the main interface in the LDD API
|
|
504 |
res = iPort.GetInterfaceDescriptor(0, interfacePtr);
|
|
505 |
|
|
506 |
if ( res )
|
|
507 |
{
|
|
508 |
delete interfaceBuf;
|
|
509 |
OstTraceFunctionExit1( CNCMCOMMUNICATIONINTERFACE_GETINTERFACENUMBER_EXIT_DUP2, this );
|
|
510 |
return res;
|
|
511 |
}
|
|
512 |
|
|
513 |
const TUint8* buffer = reinterpret_cast<const TUint8*>(interfacePtr.Ptr());
|
|
514 |
iInterfaceNumber = buffer[intNumOffsetInDes];
|
|
515 |
|
|
516 |
delete interfaceBuf;
|
|
517 |
OstTraceFunctionExit1( CNCMCOMMUNICATIONINTERFACE_GETINTERFACENUMBER_EXIT_DUP3, this );
|
|
518 |
return KErrNone;
|
|
519 |
}
|
|
520 |
|
|
521 |
|
|
522 |
|