// Copyright (c) 1997-2009 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:

// e32test\system\d_tick.cpp

// LDD for testing tick-based timers

// 

//

#include "platform.h"

#include <assp.h>

#if defined(__MEIG__)

#include <cl7211.h>

#elif defined(__MAWD__)

#include <windermere.h>

#elif defined(__MISA__)

#include <sa1100.h>

#elif defined(__MCOT__)

#include <cotulla.h>

#elif defined(__MI920__) || defined(__NI1136__)

#include <integratorap.h>

#elif defined(__IS_OMAP1510__) || defined(__IS_OMAP1610__) 

#include <omap.h>

#include <omap_timer.h>

#elif defined(__WINS__)

#include "nk_priv.h"

#elif defined(__RVEMUBOARD__)

#include <rvemuboard.h>

#elif defined(__NE1_TB__)

#include <upd35001_timer.h>

#endif

#include <kernel/kern_priv.h>

#include "d_tick.h"

#include "../misc/prbs.h"

#if defined(__WINS__)

typedef Int64 TCounter;

typedef Int64 TDelta;

#else

typedef TUint TCounter;

typedef TInt TDelta;

#endif

#if defined(__MISA__)|| defined(__MCOT__)

inline TCounter TIMER()

	{ return *(volatile TUint*)KHwRwOstOscr; }

#endif

#if defined(__IS_OMAP1510__) || defined(__IS_OMAP1610__) 

inline TCounter TIMER()

	{ return TOmapTimer::Timer3Value(); }

#endif

#ifdef __MAWD__

inline TCounter TIMER()

	{ return *(volatile TUint*)(KWindBaseAddress+KWindTimer1Value16)&0xffff; }

#endif

#ifdef __MEIG__

inline TCounter TIMER()

	{ return *(volatile TUint*)(KEigerBaseAddress+KEigerTimer1Data16)&0xffff; }

#endif

#if defined(__MI920__) || defined(__NI1136__)

inline TCounter TIMER()

	{ return *(volatile TUint*)(KHwCounterTimer1+KHoTimerValue)&0xffff;}

#endif

#if defined(__RVEMUBOARD__)

inline TCounter TIMER()

	{ return *(volatile TUint*)(KHwCounterTimer1+KHoTimerValue)&0xffff;}

#endif

#if defined(__NE1_TB__)

inline TCounter TIMER()

	{ return NETimer::Timer(2).iTimerCount; }

#endif

#if defined(__EPOC32__) && defined(__CPU_X86)

TCounter TIMER();

void SetUpTimerChannel2();

#endif

#ifdef __WINS__

inline TCounter TIMER()

	{

	LARGE_INTEGER c;

	QueryPerformanceCounter(&c);

	return c.QuadPart;

	}

#endif

#if defined(__MISA__) || defined(__MCOT__)

inline TDelta TimeDelta(TCounter initial, TCounter final)

	{ return final-initial; }				// SA1100 timer counts up

inline TInt LongTimeDelta(TCounter initial, TCounter final, TUint, TUint)

	{ return final-initial; }				// SA1100 timer counts up

#endif

#if defined(__IS_OMAP1510__) || defined(__IS_OMAP1610__)

inline TDelta TimeDelta(TCounter initial, TCounter final)

	{ return initial-final; }				// OMAP timer counts down

inline TInt LongTimeDelta(TCounter initial, TCounter final, TUint, TUint)

	{ return initial-final; }

#endif

#if defined(__MI920__) || defined(__NI1136__)

inline TDelta TimeDelta(TCounter initial, TCounter final)

	{ return (initial-final)&0xffff; }		// Integrator timer counts down

TInt LongTimeDelta(TCounter initial, TCounter final, TUint init_ms, TUint final_ms)

	{

	TUint r=(initial-final)&0xffff;			// Integrator timer counts down

	TUint ms=final_ms-init_ms;

	ms=2*ms-r;

	ms=(ms+32768)&~0xffff;

	return r+ms;

	}

#endif

#if defined(__RVEMUBOARD__)

inline TDelta TimeDelta(TCounter initial, TCounter final)

	{ return (initial-final)&0xffff; }		// Timer counts down

TInt LongTimeDelta(TCounter initial, TCounter final, TUint init_ms, TUint final_ms)

	{

	TUint r=(initial-final)&0xffff;			// Timer counts down

	TUint ms=final_ms-init_ms;

	ms=2*ms-r;

	ms=(ms+32768)&~0xffff;

	return r+ms;

	}

#endif

#if defined(__NE1_TB__)

inline TDelta TimeDelta(TCounter initial, TCounter final)

	{ return final - initial; }

inline TDelta LongTimeDelta(TCounter initial, TCounter final, TUint, TUint)

	{ return final - initial; }

#endif

#if defined(__MAWD__) || defined(__MEIG__)

inline TDelta TimeDelta(TCounter initial, TCounter final)

	{ return (initial-final)&0xffff; }		// Eiger/Windermere timer counts down

TInt LongTimeDelta(TCounter initial, TCounter final, TUint init_ms, TUint final_ms)

	{

	TUint r=(initial-final)&0xffff;			// Eiger/Windermere timer counts down

	TUint ms=final_ms-init_ms;

	ms=2*ms-r;

	ms=(ms+32768)&~0xffff;

	return r+ms;

	}

#endif

#if defined(__EPOC32__) && defined(__CPU_X86)

TDelta TimeDelta(TUint initial, TUint final)

	{

	TUint tickdiff=(initial-final)&0xffff;

	TUint msdiff=((final>>16)-(initial>>16))&0xffff;

	msdiff=1193*msdiff-tickdiff;

	msdiff=(msdiff+32768)&~0xffff;

	return msdiff+tickdiff;

	}

TInt LongTimeDelta(TUint initial, TUint final, TUint init_ms, TUint final_ms)

	{

	TUint r=(initial-final)&0xffff;			// PC timer counts down

	TUint ms=final_ms-init_ms;

	ms=1193*ms-r;

	ms=(ms+32768)&~0xffff;

	return r+ms;

	}

#endif

#ifdef __WINS__

inline TDelta TimeDelta(TCounter initial, TCounter final)

	{ return final-initial; }		// counts up

inline TDelta LongTimeDelta(TCounter initial, TCounter final, TUint, TUint)

	{ return final-initial; }		// counts up

#endif

const TInt KMajorVersionNumber=0;

const TInt KMinorVersionNumber=1;

const TInt KBuildVersionNumber=1;

const TInt KDaysFrom0ADTo2000AD=730497;		// See US_TIME.CPP to verify this

const TInt KSecondsPerDay=86400;

TUint TicksToMicroseconds(TDelta aTicks)

	{

#if defined(__MISA__) || defined(__MCOT__)

	Int64 ticks(aTicks);

	ticks*=(1000000);

	ticks+=KHwOscFreqHz/2;		// 3.6864MHz tick

	ticks/=KHwOscFreqHz;

	return (TUint)ticks;

#endif

#if defined(__IS_OMAP1510__) || defined(__IS_OMAP1610__) 

	// Timer runs at 12Mhz/32 = 375kHz. Each tick is 2.66...us which is 16/6us

	aTicks<<=4;		// * 16

	aTicks+=3;	    // rounding to the closest number of us

	return (TInt)(aTicks/6);	// us = (ticks*16+3)/6

#endif

#if defined(__MI920__) || defined(__NI1136__)

	aTicks<<=14;	// 1 tick = 32/3 us

	aTicks+=768;	// round

	return (TInt)(aTicks/1536);

#endif

#if defined(__RVEMUBOARD__)

	return (TInt)(aTicks*256);  // 1 tick = 256 us

#endif

#if defined(__NE1_TB__)

	NETimer& T2 = NETimer::Timer(2);

	TUint prescale = __e32_find_ms1_32(T2.iPrescaler & 0x3f);

	TUint f = 66666667 >> prescale;

	TUint64 x = I64LIT(1000000);

	x *= TUint64(aTicks);

	x += TUint64(f>>1);

	x /= TUint64(f);

	return (TUint)x;

#endif

#if defined(__MAWD__) || defined(__MEIG__)

	return aTicks*500;					// 2kHz tick

#endif

#if defined(__EPOC32__) && defined(__CPU_X86)

	return (aTicks*8381+4190)/10000;

#endif

#ifdef __WINS__

	LARGE_INTEGER f;

	QueryPerformanceFrequency(&f);

	aTicks*=1000000;

	aTicks+=f.QuadPart/2;

	aTicks/=f.QuadPart;

	return (TUint)aTicks;

#endif

	}

class DTick;

class TTickTimer

	{

public:

	enum TMode

		{

		EOneShot,

		EPeriodic,

		EAbsolute,

		ETickDelay,

		};

public:

	TTickTimer();

	TInt Start(TInt aMode, TUint aMin, TUint aRange, TInt aCount);

	void Cancel();

	void CompleteClient(TInt aValue);

	static void TickCallBack(TAny* aPtr);

	static void SecondCallBack(TAny* aPtr);

public:

	TTickLink iTickLink;

	TSecondLink iSecondLink;

	TMode iMode;

	TInt iInterval;

	TTimeK iExpiryTime;

	TUint iMin;

	TUint iRange;

	TInt iParam;

	TCounter iStartTime0;

	TUint iStartTime1;

	TCounter iStartTime;

	TInt iMinErr;

	TInt iMaxErr;

	Int64 iTotalErr;

	TInt iCount;

	TInt iRequestedCount;

	TInt iIgnore;

	DTick* iLdd;

	TInt iId;

	TClientRequest* iRequest;

	};

class DTickFactory : public DLogicalDevice

//

// Tick timer LDD factory

//

	{

public:

	DTickFactory();

	virtual TInt Install();						//overriding pure virtual

	virtual void GetCaps(TDes8& aDes) const;	//overriding pure virtual

	virtual TInt Create(DLogicalChannelBase*& aChannel);	//overriding pure virtual

	};

class DTick : public DLogicalChannelBase

//

// Tick timer LDD channel

//

	{

public:

	DTick();

	~DTick();

protected:

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

	virtual TInt Request(TInt aFunction, TAny* a1, TAny* a2);

public:

	void TimerExpired(TInt anId);

	inline DThread* Client() { return iThread; }

public:

	DThread* iThread;

	TInt iTickPeriodUs;

	TTimeK iYear2000;

	TTickTimer iTickTimer[KMaxTimers];

	TUint iSeed[2];

	};

TTickTimer::TTickTimer()

	:	iMode(EOneShot),

		iInterval(0),

		iExpiryTime(0),

		iMin(0),

		iRange(1),

		iParam(0),

		iStartTime0(0),

		iStartTime1(0),

		iStartTime(0),

		iMinErr(KMaxTInt),

		iMaxErr(KMinTInt),

		iTotalErr(0),

		iCount(0),

		iRequestedCount(0),

		iIgnore(0),

		iLdd(NULL),

		iId(0),

		iRequest(NULL)

	{

	}

void TTickTimer::TickCallBack(TAny* aPtr)

	{

	TCounter timer_val=TIMER();

	TTickTimer& m=*(TTickTimer*)aPtr;

	TDelta time=TimeDelta(m.iStartTime, timer_val);

	TInt time_us=TicksToMicroseconds(time);

	TInt rounded_interval=((m.iInterval+500)/1000)*1000;

	TInt error=time_us-rounded_interval;

	if (!m.iIgnore)

		{

		if (error<m.iMinErr)

			m.iMinErr=error;

		if (error>m.iMaxErr)

			m.iMaxErr=error;

		m.iTotalErr+=error;

		}

	if (m.iIgnore==1 && m.iMode==EPeriodic)

		{

		m.iStartTime0=timer_val;

		m.iStartTime1=NKern::TickCount();

		}

	if ((m.iIgnore && m.iIgnore--) || (++m.iCount<m.iRequestedCount))

		{

		if (m.iMode==EOneShot)

			{

			TUint rnd=Random(m.iLdd->iSeed);

			TUint ticks=(rnd%m.iRange)+m.iMin;

			m.iInterval=ticks*m.iLdd->iTickPeriodUs;

			m.iStartTime=TIMER();

			m.iTickLink.OneShot(m.iInterval, TickCallBack, &m);

			}

		else if (m.iMode==ETickDelay)

			{

			m.iStartTime=TIMER();

			m.iTickLink.OneShot(m.iInterval, TickCallBack, &m);

			NKern::Sleep(m.iRange);

			}

		else

			m.iStartTime=timer_val;

		return;

		}

	m.CompleteClient(KErrNone);

	if (m.iMode==EPeriodic)

		{

		m.iStartTime0=LongTimeDelta(m.iStartTime0, timer_val, m.iStartTime1, NKern::TickCount());

		m.iTickLink.Cancel();

		}

	}

void TTickTimer::SecondCallBack(TAny* aPtr)

	{

	TTickTimer& m=*(TTickTimer*)aPtr;

	TTimeK now=Kern::SystemTime();

	Int64 error=now-m.iExpiryTime;

	if (error>KMaxTInt)

		error=KMaxTInt;

	if (error<KMinTInt)

		error=KMinTInt;

	if (error<m.iMinErr)

		m.iMinErr=(TInt)error;

	if (error>m.iMaxErr)

		m.iMaxErr=(TInt)error;

	m.iTotalErr+=error;

	if (++m.iCount<m.iRequestedCount)

		{

		TUint rnd=Random(m.iLdd->iSeed);

		TUint secs=(rnd%m.iRange)+m.iMin;

		m.iExpiryTime=now+secs*1000000+999999;

		m.iExpiryTime/=1000000;

		m.iExpiryTime*=1000000;

		m.iSecondLink.At(m.iExpiryTime, SecondCallBack, &m);

		return;

		}

	m.CompleteClient(KErrNone);

	}

TInt TTickTimer::Start(TInt aMode, TUint a1, TUint a2, TInt aCount)

	{

	TInt r=KErrGeneral;

	iMode=(TMode)aMode;

	iMin=a1;

	iRange=a2;

	iMinErr=KMaxTInt;

	iMaxErr=KMinTInt;

	iTotalErr=0;

	iCount=0;

	iRequestedCount=aCount;

	switch (aMode)

		{

		case EOneShot:

			{

			TUint rnd=Random(iLdd->iSeed);

			TUint ticks=(rnd%iRange)+iMin;

			iInterval=ticks*iLdd->iTickPeriodUs;

			iStartTime=TIMER();

			iStartTime0=0;

			iStartTime1=0;

			iTickLink.OneShot(iInterval, TickCallBack, this);

			iIgnore=Min(aCount-1,1);

			r=KErrNone;

			break;

			}

		case EPeriodic:

			{

			iInterval=iMin*iLdd->iTickPeriodUs;

			iStartTime=TIMER();

			iStartTime0=iStartTime;

			iStartTime1=NKern::TickCount();

			iTickLink.Periodic(iInterval, TickCallBack, this);

			iIgnore=Min(aCount-1,1);

			r=KErrNone;

			break;

			}

		case EAbsolute:

			{

			TUint rnd=Random(iLdd->iSeed);

			TUint secs=(rnd%iRange)+iMin;

			TTimeK now=Kern::SystemTime();

			iExpiryTime=now+secs*1000000+999999;

			iExpiryTime/=1000000;

			iExpiryTime*=1000000;

			iSecondLink.At(iExpiryTime, SecondCallBack, this);

			iIgnore=0;

			iStartTime0=0;

			iStartTime1=0;

			r=KErrNone;

			break;

			}

		case ETickDelay:

			{

			iInterval=iMin*iLdd->iTickPeriodUs;

			iStartTime=TIMER();

			iStartTime0=0;

			iStartTime1=0;

			iTickLink.OneShot(iInterval, TickCallBack, this);

			iIgnore=Min(aCount-1,1);

			r=KErrNone;

			break;

			}

		default:

			break;

		}

	return r;

	}

void TTickTimer::CompleteClient(TInt aValue)

	{

	Kern::QueueRequestComplete(iLdd->Client(),iRequest,aValue);

	}

void TTickTimer::Cancel()

	{

	iTickLink.Cancel();

	iSecondLink.Cancel();

	CompleteClient(KErrCancel);

	}

DECLARE_STANDARD_LDD()

	{

    return new DTickFactory;

    }

DTickFactory::DTickFactory()

    {

    iVersion=TVersion(KMajorVersionNumber,KMinorVersionNumber,KBuildVersionNumber);

    //iParseMask=0;//No units, no info, no PDD

    //iUnitsMask=0;//Only one thing

    }

TInt DTickFactory::Create(DLogicalChannelBase*& aChannel)

//

// Create a new DTick on this logical device

//

    {

	aChannel=new DTick;

	return aChannel?KErrNone:KErrNoMemory;

    }