// 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 <kernel/kernel.h>

 #include <sa1100.h>

 #include "k32bm.h"

 class DBMMisaDevice : public DPhysicalDevice

 	{

 public:

 	DBMMisaDevice();

 	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 DBMMisaChannel : public DBMPChannel

 	{

 public:

 	DBMMisaChannel();

 	~DBMMisaChannel();

 	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:

 	TInt BindInterrupt();

 	static const TInt		KBMMisaInterruptDelayTicks = KHwOscFreqHz / 1000;

 	static const TBMTicks	KBMMisaPeriod = (((TBMTicks) 1) << 32);

 	static const TBMNs		KBMMisaNsPerTick = (1000*1000*1000) / KHwOscFreqHz;

 	static void Isr(TAny*);

 	MBMIsr*						iIsr;

 	MBMInterruptLatencyIsr*		iInterruptLatencyIsr;

 	};

 DECLARE_STANDARD_PDD()

 //

 // Create a new device

 //

 	{

 	__ASSERT_CRITICAL;

 	return new DBMMisaDevice;

 	}

 DBMMisaDevice::DBMMisaDevice()

 //

 // Constructor

 //

 	{

 	//iUnitsMask=0;

 	iVersion = TVersion(1,0,1);

 	}

 TInt DBMMisaDevice::Install()

 //

 // Install the device driver.

 //

 	{

 	TInt r = SetName(&KBMPdName);

 	return r;

 	}

 void DBMMisaDevice::GetCaps(TDes8& aDes) const

 //

 // Return the Comm capabilities.

 //

 	{

 	}

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

 //

 // Create a channel on the device.

 //

 	{

 	__ASSERT_CRITICAL;

 	aChannel = new DBMMisaChannel;

 	return aChannel?KErrNone:KErrNoMemory;

 	}

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

 	{

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

 		{

 		return KErrNotSupported;

 		}

 	return KErrNone;

 	}

 DBMMisaChannel::DBMMisaChannel()

 	{

 	//	iIsr = NULL;

 	//	iInterruptLatencyIsr = NULL;

 	}

 DBMMisaChannel::~DBMMisaChannel()

 	{

 	if (iIsr || iInterruptLatencyIsr)

 		{

 		TSa1100::DisableOstInterrupt(KHwOstMatchGeneral);

 		TSa1100::SetOstMatchEOI(KHwOstMatchGeneral);

 		Interrupt::Disable(KIntIdOstMatchGeneral);

 		TSa1100::ModifyIntLevels(KHtIntsOstMatchGeneral,0);

 		Interrupt::Unbind(KIntIdOstMatchGeneral);

 		}

 	}

 TBMTicks DBMMisaChannel::TimerPeriod()

 	{

 	return KBMMisaPeriod;

 	}

 TBMTicks DBMMisaChannel::TimerStamp()

 	{

 	return TUint(TSa1100::OstData());

 	}

 TBMNs DBMMisaChannel::TimerTicksToNs(TBMTicks ticks)

 	{

 	return ticks * KBMMisaNsPerTick;

 	}

 TBMTicks DBMMisaChannel::TimerNsToTicks(TBMNs ns)

 	{

 	return ns / KBMMisaNsPerTick;

 	}

 void DBMMisaChannel::Isr(TAny* ptr)

 	{

 	DBMMisaChannel* mCh = (DBMMisaChannel*) ptr;

 	BM_ASSERT(mCh->iIsr || mCh->iInterruptLatencyIsr);

 	if (mCh->iIsr)

 		{

 		mCh->iIsr->Isr(TUint(TSa1100::OstData()));

 		}

 	else

 		{

 		mCh->iInterruptLatencyIsr->InterruptLatencyIsr(TSa1100::OstData() - TSa1100::OstMatch(KHwOstMatchGeneral));

 		}

 	TSa1100::DisableOstInterrupt(KHwOstMatchGeneral);

 	TSa1100::SetOstMatchEOI(KHwOstMatchGeneral);

 	}

 TInt DBMMisaChannel::BindInterrupt()

 	{

 	TInt r = Interrupt::Bind(KIntIdOstMatchGeneral, Isr, this);

 	if (r != KErrNone)

 		{

 		return r;

 		}

 	TSa1100::ModifyIntLevels(0, KHtIntsOstMatchGeneral);	// route new timer interrupt to FIQ

 	TSa1100::SetOstMatchEOI(KHwOstMatchGeneral);

 	Interrupt::Enable(KIntIdOstMatchGeneral);

 	return KErrNone;

 	}

 TInt DBMMisaChannel::BindInterrupt(MBMIsr* aIsr)

 	{

 	BM_ASSERT(!iIsr);

 	BM_ASSERT(!iInterruptLatencyIsr);

 	iIsr = aIsr;

 	return BindInterrupt();

 	}

 TInt DBMMisaChannel::BindInterrupt(MBMInterruptLatencyIsr* aIsr)

 	{

 	BM_ASSERT(!iIsr);

 	BM_ASSERT(!iInterruptLatencyIsr);

 	iInterruptLatencyIsr = aIsr;

 	return BindInterrupt();

 	}

 void DBMMisaChannel::RequestInterrupt()

 	{

 	BM_ASSERT(iIsr || iInterruptLatencyIsr);

 	TSa1100::SetOstMatch(KHwOstMatchGeneral, TSa1100::OstData() + KBMMisaInterruptDelayTicks);

 	TSa1100::SetOstMatchEOI(KHwOstMatchGeneral);

 	TSa1100::EnableOstInterrupt(KHwOstMatchGeneral);

 	}

 void DBMMisaChannel::CancelInterrupt()

 	{	

 	if (iIsr || iInterruptLatencyIsr)

 		{

 		TSa1100::DisableOstInterrupt(KHwOstMatchGeneral);

 		TSa1100::SetOstMatchEOI(KHwOstMatchGeneral);

 		}

 	}