serialserver/packetloopbackcsy/inc/Loopback.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 14 May 2010 17:04:36 +0300
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// Copyright (c) 2004-2009 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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// Loopback.cpp
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// This file implements a loopback driver for use with 3GNIF test harness.
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// 
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//
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/**
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 @file
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*/
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#ifndef __LOOPBACK_H__
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#define __LOOPBACK_H__
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#include <c32comm.h>
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#include "LoopbackConfig.h"
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#include "LoopbackTimer.h"
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#include "LoopbackQueue.h"
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const TUint KCommLowUnit=0;
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#if defined(__WINS__)
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const TUint KCommHighUnit=1;
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#else // _MARM_
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const TUint KCommHighUnit=0;
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#endif
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_LIT(KSerialDescription, "Packet Loopback CSY");
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_LIT(KSerialName, "PKTLOOPBACK");
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_LIT(KPortLoopBackCsyPanic, "PortLoopBack.csy");
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enum TPortLoopBackCsyPanic
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    {       
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    /** Input / Output Argument Invalid */
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    EPLBArgument
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    };
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0
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class CHWPort;
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/**
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 * This class is the factory port object.  It drives the "entry point object" which
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 * makes the reset of the objects do their work.  It is based on the basic serial port
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 * class CSerial.
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 */
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NONSHARABLE_CLASS(CHWPortFactory) : public CSerial
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	{
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public:
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    CHWPortFactory();
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    ~CHWPortFactory();
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	virtual CPort * NewPortL(const TUint aUnit);
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	virtual void Info(TSerialInfo &aSerialInfo);
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	void Remove(CHWPort* aPort);
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	CHWPort* FindPort(TUint aUnit);
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	TPortType PortType() const;
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public: //CSerial
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	TSecurityPolicy PortPlatSecCapability(TUint aPort) const;
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private:
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	/** All ports created by this factory */
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	RArray<CHWPort*> iPorts;
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	/** Retrieves settings from the 'loopback.ini' file */
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	CLoopbackConfig* iLoopbackConfig;
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	TPortType iPortType;
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	};
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/**
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 *	This class is the object that interfaces with the commserver.  An instance of this class
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 *	represents one port in the loopback driver.
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 */
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NONSHARABLE_CLASS(CHWPort) : public CPort, public MTimerCallBack, public MFlowControlChangeCallBack
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	{
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public:
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	static CHWPort * NewSerialLoopbackL(TUint aUnit, TUint aDelay, TUint aBufferSize);
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	static CHWPort * NewPacketLoopbackL(TUint aUnit, TUint aDelay, TUint aPacketLength, TUint aQueueLength);
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private:
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	CHWPort(TUint aUnit);
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	void ConstructPacketLoopbackL(TUint aDelay, TUint aPacketLength, TUint aQueueLength);
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	void ConstructSerialLoopbackL(TUint aDelay, TUint aBufferSize);
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public:
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	TUint PortName() const;
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	virtual void StartRead(const TAny* aClientBuffer,TInt aLength);
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	virtual void ReadCancel();
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	virtual TInt QueryReceiveBuffer(TInt& aLength) const;
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	virtual void ResetBuffers(TUint aFlags);
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	virtual void StartWrite(const TAny* aClientBuffer,TInt aLength);
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	virtual void WriteCancel();
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	virtual void Break(TInt aTime);
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	virtual void BreakCancel();
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	virtual TInt GetConfig(TDes8& aDes) const;
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	virtual TInt SetConfig(const TDesC8& aDes);
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	virtual TInt SetServerConfig(const TDesC8& aDes);
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	virtual TInt GetServerConfig(TDes8& aDes);
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	virtual TInt GetCaps(TDes8& aDes);
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	virtual TInt GetSignals(TUint& aSignals);
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	virtual TInt SetSignalsToMark(TUint aSignals);
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	virtual TInt SetSignalsToSpace(TUint aSignals);
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	virtual TInt GetReceiveBufferLength(TInt& aLength) const;
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	virtual TInt SetReceiveBufferLength(TInt aSignals);
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	virtual void Destruct();
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	virtual void FreeMemory();
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	virtual void NotifySignalChange(TUint aSignalMask);
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	virtual void NotifySignalChangeCancel();
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	virtual void NotifyConfigChange();
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	virtual void NotifyConfigChangeCancel();
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	virtual void NotifyFlowControlChange();
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	virtual void NotifyFlowControlChangeCancel();
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	virtual void NotifyBreak();
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	virtual void NotifyBreakCancel();
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	virtual void NotifyDataAvailable();
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	virtual void NotifyDataAvailableCancel();
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	virtual void NotifyOutputEmpty();
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	virtual void NotifyOutputEmptyCancel();
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	virtual TInt GetFlowControlStatus(TFlowControl& aFlowControl);
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	virtual TInt GetRole(TCommRole& aRole);
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	virtual TInt SetRole(TCommRole aRole);
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	virtual void StartFlowControl();
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	virtual void StopFlowControl();
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	TInt GetReadRequestStatus();
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	TInt GetWriteRequestStatus();
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	virtual ~CHWPort();
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public:
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	void SetLoopbackPort(CHWPort* aHWPort);
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	TInt WriteBuf(const TAny* aClientBuffer,TInt aLength);
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	void TryToCompleteRead();
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	TInt GetFlowControl() const;
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private:
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	void StartWriteDelayTimer();
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public:
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	void TimerCallBack();
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	/** Timer to control how long a given CPort::Write takes */
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	CLoopbackTimer *iWriteDelayTimer;
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private:
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	/** The configuration of this port */
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	TPckgBuf<TCommConfigV01> iConfig;
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	/** Contains buffer for all reads and writes on this port */
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	MLoopbackQueue* iReadWriteQueue;
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	/** The role for this port */
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	TCommRole iRole;
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	/** This port's loopback port, which can be NULL before a loopback port is assigned */
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	CHWPort* iLoopbackPort;
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	/** Indicates if there is a read pending for later completion */
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	TBool iReadPending;
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	/** Should the current read (even if it is pending) complete before the buffer is full? */
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	TBool iReadOneOrMore;
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	/** Pointer to the client buffer to be filled by a read */
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	const TAny* iClientReadBuffer;
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	/** Length of the client buffer to be filled by a read */
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	TInt iClientReadBufferLength;
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	/** The port number for this port */
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	TUint iPortName;
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	/** The configured port type (either packet or serial) */
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	TPortType iPortType;
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	/** Pointer to object that listens to changes in flow control for this port - it is created on construction */
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	CFlowControlChange *iFlowControlChange;
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	};
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#endif
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