sl@0: // Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of the License "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: //
sl@0: 
sl@0: #include "k32bm.h"
sl@0: 
sl@0: #include <emulator.h>
sl@0: 
sl@0: class DBMWinsDevice : public DPhysicalDevice
sl@0: 	{
sl@0: public:
sl@0: 	DBMWinsDevice();
sl@0: 	virtual TInt Install();
sl@0: 	virtual void GetCaps(TDes8& aDes) const;
sl@0: 	virtual TInt Create(DBase*& aChannel, TInt aUnit, const TDesC8* anInfo, const TVersion& aVer);
sl@0: 	virtual TInt Validate(TInt aUnit, const TDesC8* anInfo, const TVersion& aVer);
sl@0: 	};
sl@0: 
sl@0: class DBMWinsChannel : public DBMPChannel
sl@0: 	{
sl@0: public:
sl@0: 	DBMWinsChannel();
sl@0: 	~DBMWinsChannel();
sl@0: 	virtual TBMTicks TimerPeriod();
sl@0: 	virtual TBMTicks TimerStamp();
sl@0: 	virtual TBMNs TimerTicksToNs(TBMTicks);
sl@0: 	virtual TBMTicks TimerNsToTicks(TBMNs);
sl@0: 	virtual TInt BindInterrupt(MBMIsr*);
sl@0: 	virtual TInt BindInterrupt(MBMInterruptLatencyIsr*);
sl@0: 	virtual void RequestInterrupt();
sl@0: 	virtual void CancelInterrupt();
sl@0: 
sl@0: private:
sl@0: 
sl@0: 	static const TInt		KBMWinsInterruptDelayMs;
sl@0: 	static const TBMNs		KBMWinsNsPerTick;
sl@0: 	static const TBMTicks	KBMWinsPeriod;
sl@0: 
sl@0: 	static void Isr(TAny*);
sl@0: 	static void InterruptLatencyIsr(TAny*);
sl@0: 
sl@0: 	TInt						iRequestedTime;
sl@0: 	MBMIsr*						iIsr;
sl@0: 	MBMInterruptLatencyIsr*		iInterruptLatencyIsr;
sl@0: 	NTimer						iTimer;
sl@0: 	};
sl@0: 	
sl@0: const TInt		DBMWinsChannel::KBMWinsInterruptDelayMs = 4;
sl@0: const TBMNs		DBMWinsChannel::KBMWinsNsPerTick = 100;
sl@0: const TBMTicks	DBMWinsChannel::KBMWinsPeriod = (((TBMTicks) 1) << 32);
sl@0: 
sl@0: DECLARE_STANDARD_PDD()
sl@0: //
sl@0: // Create a new device
sl@0: //
sl@0: 	{
sl@0: 	__ASSERT_CRITICAL;
sl@0: 	return new DBMWinsDevice;
sl@0: 	}
sl@0: 
sl@0: DBMWinsDevice::DBMWinsDevice()
sl@0: //
sl@0: // Constructor
sl@0: //
sl@0: 	{
sl@0: 	//iUnitsMask=0;
sl@0: 	iVersion = TVersion(1,0,1);
sl@0: 	}
sl@0: 
sl@0: TInt DBMWinsDevice::Install()
sl@0: //
sl@0: // Install the device driver.
sl@0: //
sl@0: 	{
sl@0: 	TInt r = SetName(&KBMPdName);
sl@0: 	return r;
sl@0: 	}
sl@0: 
sl@0: void DBMWinsDevice::GetCaps(TDes8&) const
sl@0: //
sl@0: // Return the Comm capabilities.
sl@0: //
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: TInt DBMWinsDevice::Create(DBase*& aChannel, TInt /*aUnit*/, const TDesC8* /*aInfo*/, const TVersion& /*aVer*/)
sl@0: //
sl@0: // Create a channel on the device.
sl@0: //
sl@0: 	{
sl@0: 	__ASSERT_CRITICAL;
sl@0: 	aChannel = new DBMWinsChannel();
sl@0: 	return aChannel ? KErrNone : KErrNoMemory;
sl@0: 	}
sl@0: 
sl@0: TInt DBMWinsDevice::Validate(TInt /*aUnit*/, const TDesC8* /*anInfo*/, const TVersion& aVer)
sl@0: 	{
sl@0: 	if (!Kern::QueryVersionSupported(iVersion,aVer))
sl@0: 		{
sl@0: 		return KErrNotSupported;
sl@0: 		}
sl@0: 	return KErrNone;
sl@0: 	}
sl@0: 
sl@0: DBMWinsChannel::DBMWinsChannel() : iTimer(Isr, this)
sl@0: 	{
sl@0: 	// iIsr = NULL;
sl@0: 	// iInterruptLatencyIsr = NULL;
sl@0: 	}
sl@0: 
sl@0: DBMWinsChannel::~DBMWinsChannel()
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: TBMTicks DBMWinsChannel::TimerPeriod()
sl@0: 	{
sl@0: 	return KBMWinsPeriod;
sl@0: 	}
sl@0: 
sl@0: TBMTicks DBMWinsChannel::TimerStamp()
sl@0: 	{
sl@0: 	FILETIME now;
sl@0: 	GetSystemTimeAsFileTime(&now);
sl@0: 	return now.dwLowDateTime; 
sl@0: 	}
sl@0: 
sl@0: TBMNs DBMWinsChannel::TimerTicksToNs(TBMTicks ticks)
sl@0: 	{
sl@0: 	return ticks * KBMWinsNsPerTick;
sl@0: 	}
sl@0: 
sl@0: TBMTicks DBMWinsChannel::TimerNsToTicks(TBMNs ns)
sl@0: 	{
sl@0: 	return ns / KBMWinsNsPerTick;
sl@0: 	}
sl@0: 
sl@0: void DBMWinsChannel::Isr(TAny* ptr)
sl@0: 	{
sl@0: 	FILETIME now;
sl@0: 	GetSystemTimeAsFileTime(&now);
sl@0: 	DBMWinsChannel* pCh = (DBMWinsChannel*) ptr;
sl@0: 	BM_ASSERT(pCh->iIsr);
sl@0: 	pCh->iIsr->Isr(now.dwLowDateTime);
sl@0: 	}
sl@0: 
sl@0: TInt DBMWinsChannel::BindInterrupt(MBMIsr* aIsr)
sl@0: 	{
sl@0: 	BM_ASSERT(!iIsr);
sl@0: 	BM_ASSERT(!iInterruptLatencyIsr);
sl@0: 	iIsr = aIsr;
sl@0: 	return KErrNone;
sl@0: 	}
sl@0: 
sl@0: void DBMWinsChannel::InterruptLatencyIsr(TAny* ptr)
sl@0: 	{
sl@0: 	FILETIME now;
sl@0: 	GetSystemTimeAsFileTime(&now);
sl@0: 	DBMWinsChannel* pCh = (DBMWinsChannel*) ptr;
sl@0: 	TBMTicks latency = now.dwLowDateTime - pCh->iRequestedTime;
sl@0: 	BM_ASSERT(pCh->iInterruptLatencyIsr);
sl@0: 	pCh->iInterruptLatencyIsr->InterruptLatencyIsr(latency);
sl@0: 	}
sl@0: 
sl@0: TInt DBMWinsChannel::BindInterrupt(MBMInterruptLatencyIsr* aIsr)
sl@0: 	{
sl@0: 	BM_ASSERT(!iIsr);
sl@0: 	BM_ASSERT(!iInterruptLatencyIsr);
sl@0: 	iInterruptLatencyIsr = aIsr;
sl@0: 	iTimer.iFunction = InterruptLatencyIsr;
sl@0: 	return KErrNone;
sl@0: 	}
sl@0: 
sl@0: void DBMWinsChannel::RequestInterrupt()
sl@0: 	{
sl@0: 	BM_ASSERT(iIsr || iInterruptLatencyIsr);
sl@0: 	FILETIME now;
sl@0: 	GetSystemTimeAsFileTime(&now);
sl@0: 	iRequestedTime = now.dwLowDateTime + ((KBMWinsInterruptDelayMs * ((1000 * 1000) / (TInt) KBMWinsNsPerTick)));
sl@0: 	iTimer.OneShot(KBMWinsInterruptDelayMs);
sl@0: 	}
sl@0: 	
sl@0: void DBMWinsChannel::CancelInterrupt()
sl@0: 	{
sl@0: 	iTimer.Cancel();
sl@0: 	}
sl@0: