--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/kerneltest/e32test/benchmark/bm_mi920_pdd.cpp	Mon Oct 19 15:55:17 2009 +0100
@@ -0,0 +1,250 @@
+// 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 <integratorap.h>
+#include <iolines.h>
+
+//	NOTE:
+//	We use 2 different timers on this test:
+//		1) the Core module FRC - 32-bit clocked at 24MHz, non-interruptible, for the time stamps
+//		2) IntegratorAP Timer 1 - 16-bit, clocked at 1.5MHz , interruptible, for the Interrupts latency measurements
+//
+
+#define KHwFrcFreqHz	24000000			// uses the core module FRC clocked at 24MHz
+#define KHwApFreqHz		24000000			// uses the IntegratorAP Timer 1 clocked at 24MHz
+
+#include "k32bm.h"
+
+class DBMMi920Device : public DPhysicalDevice
+	{
+public:
+	DBMMi920Device();
+	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 DBMMi920Channel : public DBMPChannel
+	{
+public:
+	DBMMi920Channel();
+	~DBMMi920Channel();
+	TInt InitialiseTimer();
+	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 void ClearAp1TimerInt();
+	TInt BindInterrupt();
+
+	static const TBMTicks	KBMMi920FrcPeriod = (((TBMTicks) 1) << 32);				// FRC
+	static const TUint		KBMMi920ApPeriod = (((TBMTicks) 1) << 16);				// FRC
+	static const TBMNs		KBMMi920NsPerTick = (1000*1000*1000) / KHwFrcFreqHz;	// FRC
+	static const TUint		KBMMi920InterruptDelayTicks = KHwApFreqHz / 1000;		// 1ms in AP Timer 1 ticks
+	
+	static void Isr(TAny*);
+	
+	MBMIsr*						iIsr;
+	MBMInterruptLatencyIsr*		iInterruptLatencyIsr;
+	TInt				iInterruptId;
+	};
+
+DECLARE_STANDARD_PDD()
+//
+// Create a new device
+//
+	{
+	__ASSERT_CRITICAL;
+	return new DBMMi920Device;
+	}
+
+DBMMi920Device::DBMMi920Device()
+//
+// Constructor
+//
+	{
+	//iUnitsMask=0;
+	iVersion = TVersion(1,0,1);
+	}
+
+TInt DBMMi920Device::Install()
+//
+// Install the device driver.
+//
+	{
+	TInt r = SetName(&KBMPdName);
+	return r;
+	}
+
+void DBMMi920Device::GetCaps(TDes8& aDes) const
+//
+// Return the Comm capabilities.
+//
+	{
+	}
+
+TInt DBMMi920Device::Create(DBase*& aChannel, TInt /*aUnit*/, const TDesC8* /*aInfo*/, const TVersion& /*aVer*/)
+//
+// Create a channel on the device.
+//
+	{
+	__ASSERT_CRITICAL;
+	DBMMi920Channel* pD= new DBMMi920Channel;
+	aChannel = pD;
+	TInt r=KErrNoMemory;
+	if (pD)
+		r=pD->InitialiseTimer();
+	return r;
+	}
+
+TInt DBMMi920Device::Validate(TInt /*aUnit*/, const TDesC8* /*anInfo*/, const TVersion& aVer)
+	{
+	if (!Kern::QueryVersionSupported(iVersion,aVer))
+		{
+		return KErrNotSupported;
+		}
+	return KErrNone;
+	}
+
+void DBMMi920Channel::ClearAp1TimerInt()
+	{
+	do
+		TIntegratorAP::ClearTimerInt(TIntegratorAP::ECounterTimer1);
+		// WARNING: Integrator bug! The timer interrupts are not always cleared the first time round
+		// so keep on clearing them until they are no longer active.
+	while (*(volatile TUint*)(KHwIrqBaseSet0) & KHtIntTimer1);
+	}
+
+DBMMi920Channel::DBMMi920Channel()
+	{
+	//	iIsr = NULL;
+	//	iInterruptLatencyIsr = NULL;
+	iInterruptId = KIntIdMatchGeneral2;
+	}
+
+DBMMi920Channel::~DBMMi920Channel()
+	{
+	// Disable the IntegratorAP Timer 1 and associated interrupt
+	if (iIsr || iInterruptLatencyIsr)
+		{
+		ClearAp1TimerInt();
+		Interrupt::Disable(iInterruptId);
+		Interrupt::Unbind(iInterruptId);
+		}
+	TIntegratorAP::EnableTimer(TIntegratorAP::ECounterTimer1, TIntegratorAP::EDisable);
+	}
+
+TInt DBMMi920Channel::InitialiseTimer()
+	{
+	// Set up the IntegratorAP Timer 1 to run at 1.5MHz, free-running mode, and enable it
+    TIntegratorAP::SetTimerMode(TIntegratorAP::ECounterTimer1, TIntegratorAP::ETimerModeFreeRunning);
+	TIntegratorAP::SetTimerPreScale(TIntegratorAP::ECounterTimer1, TIntegratorAP::ETimerPreScaleNone);	// 24MHz
+    TIntegratorAP::EnableTimer(TIntegratorAP::ECounterTimer1, TIntegratorAP::EEnable);
+	return KErrNone;
+	}
+
+TBMTicks DBMMi920Channel::TimerPeriod()
+	{
+	return KBMMi920FrcPeriod;
+	}
+
+TBMTicks DBMMi920Channel::TimerStamp()
+	{
+	return (*(volatile TUint*)(KHwRwCoreClkCounter));		// FRC
+	}
+
+TBMNs DBMMi920Channel::TimerTicksToNs(TBMTicks ticks)
+	{
+	return ticks * KBMMi920NsPerTick;						// FRC
+	}
+
+TBMTicks DBMMi920Channel::TimerNsToTicks(TBMNs ns)
+	{
+	return ns / KBMMi920NsPerTick;							// FRC
+	}
+
+
+void DBMMi920Channel::Isr(TAny* ptr)
+	{
+	DBMMi920Channel* mCh = (DBMMi920Channel*) ptr;
+	BM_ASSERT(mCh->iIsr || mCh->iInterruptLatencyIsr);
+	if (mCh->iIsr)
+		{
+		mCh->iIsr->Isr(*(volatile TUint*)(KHwRwCoreClkCounter));	// read timestamp off FRC
+		}
+	else
+		{ // calculate time elapsed between the interrupt going off and now in FRC ticks
+		TUint value = TIntegratorAP::TimerValue(TIntegratorAP::ECounterTimer1);
+		BM_ASSERT(((KHwFrcFreqHz/KHwApFreqHz)*KHwApFreqHz) == KHwFrcFreqHz);
+		mCh->iInterruptLatencyIsr->InterruptLatencyIsr((KBMMi920ApPeriod - value) * (KHwFrcFreqHz/KHwApFreqHz));
+		}
+	ClearAp1TimerInt();
+	Interrupt::Disable(mCh->iInterruptId);
+	}
+
+TInt DBMMi920Channel::BindInterrupt()
+	{
+	BM_ASSERT(iInterruptId==KIntIdMatchGeneral2);
+	TInt r=Interrupt::Bind(iInterruptId, Isr, this);
+	if (r<0)
+		{
+		return r;
+		}
+	iInterruptId = r;
+	return KErrNone;
+	}
+
+TInt DBMMi920Channel::BindInterrupt(MBMIsr* aIsr)
+	{
+	BM_ASSERT(!iIsr);
+	BM_ASSERT(!iInterruptLatencyIsr);
+	iIsr = aIsr;
+	return BindInterrupt();
+	}
+
+TInt DBMMi920Channel::BindInterrupt(MBMInterruptLatencyIsr* aIsr)
+	{
+	BM_ASSERT(!iIsr);
+	BM_ASSERT(!iInterruptLatencyIsr);
+	iInterruptLatencyIsr = aIsr;
+	return BindInterrupt();
+	}
+
+
+void DBMMi920Channel::RequestInterrupt()
+	{
+	BM_ASSERT(iIsr || iInterruptLatencyIsr);
+	TIntegratorAP::SetTimerLoad(TIntegratorAP::ECounterTimer1, KBMMi920InterruptDelayTicks);
+	ClearAp1TimerInt();
+	Interrupt::Enable(iInterruptId);					// Timer interrupts on Integrator are always enabled!
+	}
+
+void DBMMi920Channel::CancelInterrupt()
+	{	
+	if (iIsr || iInterruptLatencyIsr)
+		{
+		TIntegratorAP::EnableTimer(TIntegratorAP::ECounterTimer1, TIntegratorAP::EDisable);
+		}
+	}
+