// Copyright (c) 2002-2009 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:

 //

 #include "k32bm.h"

 #include <emulator.h>

 class DBMWinsDevice : public DPhysicalDevice

 	{

 public:

 	DBMWinsDevice();

 	virtual TInt Install();

 	virtual void GetCaps(TDes8& aDes) const;

 	virtual TInt Create(DBase*& aChannel, TInt aUnit, const TDesC8* anInfo, const TVersion& aVer);

 	virtual TInt Validate(TInt aUnit, const TDesC8* anInfo, const TVersion& aVer);

 	};

 class DBMWinsChannel : public DBMPChannel

 	{

 public:

 	DBMWinsChannel();

 	~DBMWinsChannel();

 	virtual TBMTicks TimerPeriod();

 	virtual TBMTicks TimerStamp();

 	virtual TBMNs TimerTicksToNs(TBMTicks);

 	virtual TBMTicks TimerNsToTicks(TBMNs);

 	virtual TInt BindInterrupt(MBMIsr*);

 	virtual TInt BindInterrupt(MBMInterruptLatencyIsr*);

 	virtual void RequestInterrupt();

 	virtual void CancelInterrupt();

 private:

 	static const TInt		KBMWinsInterruptDelayMs;

 	static const TBMNs		KBMWinsNsPerTick;

 	static const TBMTicks	KBMWinsPeriod;

 	static void Isr(TAny*);

 	static void InterruptLatencyIsr(TAny*);

 	TInt						iRequestedTime;

 	MBMIsr*						iIsr;

 	MBMInterruptLatencyIsr*		iInterruptLatencyIsr;

 	NTimer						iTimer;

 	};

 const TInt		DBMWinsChannel::KBMWinsInterruptDelayMs = 4;

 const TBMNs		DBMWinsChannel::KBMWinsNsPerTick = 100;

 const TBMTicks	DBMWinsChannel::KBMWinsPeriod = (((TBMTicks) 1) << 32);

 DECLARE_STANDARD_PDD()

 //

 // Create a new device

 //

 	{

 	__ASSERT_CRITICAL;

 	return new DBMWinsDevice;

 	}

 DBMWinsDevice::DBMWinsDevice()

 //

 // Constructor

 //

 	{

 	//iUnitsMask=0;

 	iVersion = TVersion(1,0,1);

 	}

 TInt DBMWinsDevice::Install()

 //

 // Install the device driver.

 //

 	{

 	TInt r = SetName(&KBMPdName);

 	return r;

 	}

 void DBMWinsDevice::GetCaps(TDes8&) const

 //

 // Return the Comm capabilities.

 //

 	{

 	}

 TInt DBMWinsDevice::Create(DBase*& aChannel, TInt /*aUnit*/, const TDesC8* /*aInfo*/, const TVersion& /*aVer*/)

 //

 // Create a channel on the device.

 //

 	{

 	__ASSERT_CRITICAL;

 	aChannel = new DBMWinsChannel();

 	return aChannel ? KErrNone : KErrNoMemory;

 	}

 TInt DBMWinsDevice::Validate(TInt /*aUnit*/, const TDesC8* /*anInfo*/, const TVersion& aVer)

 	{

 	if (!Kern::QueryVersionSupported(iVersion,aVer))

 		{

 		return KErrNotSupported;

 		}

 	return KErrNone;

 	}

 DBMWinsChannel::DBMWinsChannel() : iTimer(Isr, this)

 	{

 	// iIsr = NULL;

 	// iInterruptLatencyIsr = NULL;

 	}

 DBMWinsChannel::~DBMWinsChannel()

 	{

 	}

 TBMTicks DBMWinsChannel::TimerPeriod()

 	{

 	return KBMWinsPeriod;

 	}

 TBMTicks DBMWinsChannel::TimerStamp()

 	{

 	FILETIME now;

 	GetSystemTimeAsFileTime(&now);

 	return now.dwLowDateTime; 

 	}

 TBMNs DBMWinsChannel::TimerTicksToNs(TBMTicks ticks)

 	{

 	return ticks * KBMWinsNsPerTick;

 	}

 TBMTicks DBMWinsChannel::TimerNsToTicks(TBMNs ns)

 	{

 	return ns / KBMWinsNsPerTick;

 	}

 void DBMWinsChannel::Isr(TAny* ptr)

 	{

 	FILETIME now;

 	GetSystemTimeAsFileTime(&now);

 	DBMWinsChannel* pCh = (DBMWinsChannel*) ptr;

 	BM_ASSERT(pCh->iIsr);

 	pCh->iIsr->Isr(now.dwLowDateTime);

 	}

 TInt DBMWinsChannel::BindInterrupt(MBMIsr* aIsr)

 	{

 	BM_ASSERT(!iIsr);

 	BM_ASSERT(!iInterruptLatencyIsr);

 	iIsr = aIsr;

 	return KErrNone;

 	}

 void DBMWinsChannel::InterruptLatencyIsr(TAny* ptr)

 	{

 	FILETIME now;

 	GetSystemTimeAsFileTime(&now);

 	DBMWinsChannel* pCh = (DBMWinsChannel*) ptr;

 	TBMTicks latency = now.dwLowDateTime - pCh->iRequestedTime;

 	BM_ASSERT(pCh->iInterruptLatencyIsr);

 	pCh->iInterruptLatencyIsr->InterruptLatencyIsr(latency);

 	}

 TInt DBMWinsChannel::BindInterrupt(MBMInterruptLatencyIsr* aIsr)

 	{

 	BM_ASSERT(!iIsr);

 	BM_ASSERT(!iInterruptLatencyIsr);

 	iInterruptLatencyIsr = aIsr;

 	iTimer.iFunction = InterruptLatencyIsr;

 	return KErrNone;

 	}

 void DBMWinsChannel::RequestInterrupt()

 	{

 	BM_ASSERT(iIsr || iInterruptLatencyIsr);

 	FILETIME now;

 	GetSystemTimeAsFileTime(&now);

 	iRequestedTime = now.dwLowDateTime + ((KBMWinsInterruptDelayMs * ((1000 * 1000) / (TInt) KBMWinsNsPerTick)));

 	iTimer.OneShot(KBMWinsInterruptDelayMs);

 	}

 void DBMWinsChannel::CancelInterrupt()

 	{

 	iTimer.Cancel();

 	}