// Copyright (c) 2004-2009 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\mmu\d_memorytest.cpp

// 

//

#include <kernel/kern_priv.h>

#include <kernel/cache.h>

#include "d_memorytest.h"

//

// Class definitions

//

class DMemoryTestFactory : public DLogicalDevice

	{

public:

	~DMemoryTestFactory();

	virtual TInt Install();

	virtual void GetCaps(TDes8& aDes) const;

	virtual TInt Create(DLogicalChannelBase*& aChannel);

	};

class DMemoryTestChannel : public DLogicalChannelBase

	{

public:

	DMemoryTestChannel();

	~DMemoryTestChannel();

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

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

private:

	TInt TestAllocZerosMemory();

	TInt TestReAllocZerosMemory();

	TInt AllocTest1(TInt aSize);

	TInt ReAllocTest1();

	TInt ReAllocTest2(TUint8*& mem1, TUint8*& mem2, TUint8*& mem3);

	TInt AllocPhysTest(TUint32 aIters, TUint32 aSize); 

	TInt AllocPhysTest1(TUint32 aIters, TUint32 aSize); 

public:

	DMemoryTestFactory*	iFactory;

	TVirtualPinObject* iVirtualPinObject;

	struct{

		TPhysicalPinObject* iObject;

		TPhysAddr iPhysAddr;

		TPhysAddr iPhysPageList[KUCPageCount];

		TUint 	iColour;

		TUint32 iActualMapAttr;

		}iPhysicalPinning;

	struct{

		TKernelMapObject* iObject;

		TPhysAddr iPhysPageList[KUCPageCount];

		TLinAddr iLinAddr;

		}iKernelMapping;

	TUint32 iPageSize;

	};

//

// DMemoryTestFactory

//

TInt DMemoryTestFactory::Install()

	{

	return SetName(&KMemoryTestLddName);

	}

DMemoryTestFactory::~DMemoryTestFactory()

	{

	}

void DMemoryTestFactory::GetCaps(TDes8& /*aDes*/) const

	{

	// Not used but required as DLogicalDevice::GetCaps is pure virtual

	}

TInt DMemoryTestFactory::Create(DLogicalChannelBase*& aChannel)

	{

	aChannel = NULL;

	DMemoryTestChannel* channel=new DMemoryTestChannel;

	if(!channel)

		return KErrNoMemory;

	channel->iFactory = this;

	aChannel = channel;

	return KErrNone;

	}

DECLARE_STANDARD_LDD()

	{

	return new DMemoryTestFactory;

	}

//

// DMemoryTestChannel

//

TInt DMemoryTestChannel::DoCreate(TInt /*aUnit*/, const TDesC8* /*aInfo*/, const TVersion& /*aVer*/)

	{

	return KErrNone;

	}

DMemoryTestChannel::DMemoryTestChannel()

	{

	iPageSize = Kern::RoundToPageSize(1);

	}

DMemoryTestChannel::~DMemoryTestChannel()

	{

	Kern::DestroyVirtualPinObject(iVirtualPinObject);

	}

TInt DMemoryTestChannel::Request(TInt aFunction, TAny* a1, TAny* a2)

	{

	TInt r=KErrNotSupported;

	switch(aFunction)

		{

	case RMemoryTestLdd::EReadWriteMemory:

	case RMemoryTestLdd::EReadMemory:

	case RMemoryTestLdd::EWriteMemory:

		{

		TUint32 value=(TUint32)a2;

#ifdef _DEBUG

		TInt debugMask = Kern::CurrentThread().iDebugMask;

		Kern::CurrentThread().iDebugMask = debugMask&~(1U<<KPANIC);

#endif

		XTRAP(r, XT_DEFAULT,

			if(aFunction==RMemoryTestLdd::EReadWriteMemory)

				{

				kumemget32(&value,a1,4);

				kumemput32(a1,&value,4);

				}

			else if(aFunction==RMemoryTestLdd::EReadMemory)

				kumemget32(&value,a1,4);

			else if(aFunction==RMemoryTestLdd::EWriteMemory)

				kumemput32(a1,&value,4);

			);

#ifdef _DEBUG

		Kern::CurrentThread().iDebugMask = debugMask;

#endif

		if(aFunction==RMemoryTestLdd::EReadMemory)

			kumemput32(a2,&value,sizeof(value));

		return r;

		}

	case RMemoryTestLdd::ETestAllocZerosMemory:

	case RMemoryTestLdd::ETestReAllocZerosMemory:

		{

		NKern::ThreadEnterCS();		

		TInt r;

		if (aFunction==RMemoryTestLdd::ETestAllocZerosMemory)

			r=TestAllocZerosMemory();

		else

			r=TestReAllocZerosMemory();

		NKern::ThreadLeaveCS();

		return r;

		}

	case RMemoryTestLdd::ETestAllocPhysTest:

		{

		NKern::ThreadEnterCS();

		r=AllocPhysTest((TUint32)a1,(TUint32)a2);

		NKern::ThreadLeaveCS();

		return r;

		}

	case RMemoryTestLdd::ETestAllocPhysTest1:

		{

		NKern::ThreadEnterCS();

		r=AllocPhysTest1((TUint32)a1,(TUint32)a2);

		NKern::ThreadLeaveCS();

		return r;

		}

	case RMemoryTestLdd::ECreateVirtualPinObject:

		{

		NKern::ThreadEnterCS();

		r=Kern::CreateVirtualPinObject(iVirtualPinObject);

		NKern::ThreadLeaveCS();

		return r;

		}

	case RMemoryTestLdd::EPinVirtualMemory:

		return Kern::PinVirtualMemory(iVirtualPinObject, (TLinAddr)a1, (TUint)a2);

	case RMemoryTestLdd::EUnpinVirtualMemory:

		Kern::UnpinVirtualMemory(iVirtualPinObject);

		return KErrNone;

	case RMemoryTestLdd::EDestroyVirtualPinObject:

		{

		NKern::ThreadEnterCS();

		Kern::DestroyVirtualPinObject(iVirtualPinObject);

		NKern::ThreadLeaveCS();

		return KErrNone;

		}

	case RMemoryTestLdd::ESetPanicTrace:

		{

		TBool old = false;

#ifdef _DEBUG

		DThread& thread = Kern::CurrentThread();

		TInt debugMask = thread.iDebugMask;

		if(debugMask&(1U<<KPANIC))

			old = true;

		if(a1)

			debugMask |= (1U<<KPANIC);

		else

			debugMask &= ~(1U<<KPANIC);

		thread.iDebugMask = debugMask;

#endif

		return old;

		}

	case RMemoryTestLdd::EIsMemoryPresent:

#ifndef __WINS__

		return Epoc::LinearToPhysical((TLinAddr)a1) != KPhysAddrInvalid;

#else

		Kern::PanicCurrentThread(_L("IsMemoryPresent should not be used on the emulator"), KErrNotSupported);

		return KErrNotSupported;

#endif

	case RMemoryTestLdd::ECreatePhysicalPinObject:

		{

		NKern::ThreadEnterCS();

		r=Kern::CreatePhysicalPinObject(iPhysicalPinning.iObject);

		NKern::ThreadLeaveCS();

		return r;

		}

	case RMemoryTestLdd::EPinPhysicalMemory:

		return Kern::PinPhysicalMemory(iPhysicalPinning.iObject, (TLinAddr)a1, (TUint)a2, EFalse, iPhysicalPinning.iPhysAddr,

							iPhysicalPinning.iPhysPageList, iPhysicalPinning.iActualMapAttr, iPhysicalPinning.iColour, NULL);

	case RMemoryTestLdd::EPinPhysicalMemoryRO:

		return Kern::PinPhysicalMemory(iPhysicalPinning.iObject, (TLinAddr)a1, (TUint)a2, ETrue, iPhysicalPinning.iPhysAddr,

							iPhysicalPinning.iPhysPageList, iPhysicalPinning.iActualMapAttr, iPhysicalPinning.iColour, NULL);

	case RMemoryTestLdd::ECheckPageList:

		{

#ifdef __WINS__

		return KErrNotSupported;

#else

		TInt i;

		for (i=0;i<KUCPageCount; i++)

			{

			TPhysAddr addr = Epoc::LinearToPhysical((TLinAddr)a1 + i*iPageSize);

			if (addr==KPhysAddrInvalid) 				 return KErrGeneral;

			if (addr!=iPhysicalPinning.iPhysPageList[i]) return KErrNotFound;

			}

		return KErrNone;

#endif		

		}

	case RMemoryTestLdd::ESyncPinnedPhysicalMemory:

		return Cache::SyncPhysicalMemoryBeforeDmaWrite(iPhysicalPinning.iPhysPageList,

									iPhysicalPinning.iColour, (TUint)a1, (TUint)a2, iPhysicalPinning.iActualMapAttr);

	case RMemoryTestLdd::EMovePinnedPhysicalMemory:

		{

#ifdef __WINS__

		return KErrNotSupported;

#else

		TPhysAddr newPage;

		NKern::ThreadEnterCS();

		r = Epoc::MovePhysicalPage(iPhysicalPinning.iPhysPageList[(TUint)a1], newPage);		

		NKern::ThreadLeaveCS();

		return r;

#endif

		}

	case RMemoryTestLdd::EInvalidatePinnedPhysicalMemory:

		{

		r = Cache::SyncPhysicalMemoryBeforeDmaRead(iPhysicalPinning.iPhysPageList,

									iPhysicalPinning.iColour, (TUint)a1, (TUint)a2, iPhysicalPinning.iActualMapAttr);

		if (r==KErrNone)

			r = Cache::SyncPhysicalMemoryAfterDmaRead(iPhysicalPinning.iPhysPageList,

										iPhysicalPinning.iColour, (TUint)a1, (TUint)a2, iPhysicalPinning.iActualMapAttr);

		return r;	

		}

	case RMemoryTestLdd::EUnpinPhysicalMemory:

		return Kern::UnpinPhysicalMemory(iPhysicalPinning.iObject);

	case RMemoryTestLdd::EDestroyPhysicalPinObject:

		{

		NKern::ThreadEnterCS();

		r=Kern::DestroyPhysicalPinObject(iPhysicalPinning.iObject);

		NKern::ThreadLeaveCS();

		return r;

		}

	case RMemoryTestLdd::EPinKernelPhysicalMemory:

		{

		TPhysicalPinObject* pinObject;

		TPhysAddr aAddress;

		TPhysAddr aPages[2];

		TUint aColour=0;

		TUint32 actualMemAttr;

		NKern::ThreadEnterCS();

		Kern::CreatePhysicalPinObject(pinObject);

		r = Kern::PinPhysicalMemory(pinObject, (TLinAddr)&aAddress, 4, EFalse, aAddress, aPages, actualMemAttr, aColour, NULL);

		Cache::SyncPhysicalMemoryBeforeDmaWrite(aPages, aColour, 10, 30, actualMemAttr);

		Kern::UnpinPhysicalMemory(pinObject);

		Kern::DestroyPhysicalPinObject(pinObject);

		NKern::ThreadLeaveCS();

		return r;

		}

	case RMemoryTestLdd::ECreateKernelMapObject:

		{

		NKern::ThreadEnterCS();

		r=Kern::CreateKernelMapObject(iKernelMapping.iObject, (TUint)a1);

		NKern::ThreadLeaveCS();

		return r;

		}

	case RMemoryTestLdd::EKernelMapMemory:

		return Kern::MapAndPinMemory(	iKernelMapping.iObject, NULL, (TLinAddr)a1, (TUint)a2, 0,

										iKernelMapping.iLinAddr, iKernelMapping.iPhysPageList);

	case RMemoryTestLdd::EKernelMapMemoryRO:

		return Kern::MapAndPinMemory(	iKernelMapping.iObject, NULL, (TLinAddr)a1, (TUint)a2, Kern::EKernelMap_ReadOnly,

										iKernelMapping.iLinAddr, iKernelMapping.iPhysPageList);

	case RMemoryTestLdd::EKernelMapMemoryInvalid:

		return Kern::MapAndPinMemory(	iKernelMapping.iObject, NULL, (TLinAddr)a1, (TUint)a2, (TUint)~Kern::EKernelMap_ReadOnly,

										iKernelMapping.iLinAddr, iKernelMapping.iPhysPageList);

	case RMemoryTestLdd::EKernelMapCheckPageList:

		{

#ifdef __WINS__

		return KErrNotSupported;

#else

		TUint i = 0;

		for (; i < (TUint)KUCPageCount; i++)

			{

			// Compare the user side address to physical addresses

			TPhysAddr addr = Epoc::LinearToPhysical((TLinAddr)a1 + i*iPageSize);

			if (addr == KPhysAddrInvalid) 				 

				return KErrGeneral;

			if (addr != iKernelMapping.iPhysPageList[i]) 

				return KErrNotFound;

			// Compare the kernel side address to physical addresses

			addr = Epoc::LinearToPhysical(iKernelMapping.iLinAddr + i*iPageSize);

			if (addr == KPhysAddrInvalid) 				 

				return KErrGeneral;

			if (addr != iKernelMapping.iPhysPageList[i])

				return KErrNotFound;

			}

		return KErrNone;

#endif		

		}

	case RMemoryTestLdd::EKernelMapSyncMemory:

		Cache::SyncMemoryBeforeDmaWrite(iKernelMapping.iLinAddr, KUCPageCount*iPageSize);

		return KErrNone;

	case RMemoryTestLdd::EKernelMapInvalidateMemory:

		{

		Cache::SyncMemoryBeforeDmaRead(iKernelMapping.iLinAddr, KUCPageCount*iPageSize);

		Cache::SyncMemoryAfterDmaRead(iKernelMapping.iLinAddr, KUCPageCount*iPageSize);

		return KErrNone;

		}

	case RMemoryTestLdd::EKernelMapMoveMemory:

		{

#ifdef __WINS__

		return KErrNotSupported;

#else

		TPhysAddr newPage;

		NKern::ThreadEnterCS();

		r = Epoc::MovePhysicalPage(iKernelMapping.iPhysPageList[(TUint)a1], newPage);		

		NKern::ThreadLeaveCS();

		return r;

#endif

		}

	case RMemoryTestLdd::EKernelMapReadModifyMemory:

		{

		TUint8* p = (TUint8*)iKernelMapping.iLinAddr;

		// Verify the contents of the data when accessed via the kernel mapping.

		TUint i = 0;

		for (i = 0; i < KUCPageCount*iPageSize; i++)

			{

			if (*p++ != (TUint8)i)

				return KErrCorrupt;

			}

		// Modify the data via the kernel mapping.

		p = (TUint8*)iKernelMapping.iLinAddr;

		for (i = 0; i < KUCPageCount*iPageSize; i++)

			{

			*p++ = (TUint8)(i + 1);

			}

		return KErrNone;

		}

	case RMemoryTestLdd::EKernelUnmapMemory:

		Kern::UnmapAndUnpinMemory(iKernelMapping.iObject);

		return KErrNone;

	case RMemoryTestLdd::EDestroyKernelMapObject:

		{

		NKern::ThreadEnterCS();

		Kern::DestroyKernelMapObject(iKernelMapping.iObject);

		NKern::ThreadLeaveCS();

		return KErrNone;

		}

	default:

		return KErrNotSupported;

		}

	}

// Fail a test by returning an error code indicating the problem

#define FAIL_ALLOC_TEST(testIndex, byteOffset, unexepectedValue) \

	err = ((testIndex) << 16) | ((byteOffset) << 8) | (unexepectedValue)

TInt DMemoryTestChannel::TestAllocZerosMemory()

	{

	TInt count = 100;

	TInt r = KErrNotSupported;

	TInt size = 256;

	do	{	//re-try up to 100 times if memory conditions are not correct

		r=AllocTest1(size);

		size -= 2;

		} while(((r == KErrNoMemory)||(r == KErrUnknown)) && --count );

	return r;

	}

TInt DMemoryTestChannel::AllocTest1(TInt aSize)

	{

	TInt err = KErrNone;

	TUint8* mem1 = (TUint8*)Kern::Alloc(aSize);

	if (!mem1)

		return KErrNoMemory;

  	memset(mem1, 0xff, aSize);	

	Kern::Free(mem1);

	TUint8* mem2 = (TUint8*)Kern::Alloc(aSize);

	if (!mem2)

		return KErrNoMemory;

	if (mem1 != mem2)

		err = KErrUnknown;	// Test inconclusive, can retry

	for (TInt i = 0 ; i<aSize && err==KErrNone; ++i)

		{

		if (mem2[i] != 0)

			FAIL_ALLOC_TEST(1, i, mem2[i]);

		}

	Kern::Free(mem2);

	return err;

	}

TInt DMemoryTestChannel::TestReAllocZerosMemory()

	{

	TInt count = 100;

	TInt r = KErrNotSupported;

	do	{	//re-try up to 100 times if memory conditions are not correct

		r=ReAllocTest1();

		} while(((r == KErrNoMemory)||(r == KErrUnknown)) && --count);

	if (r!=KErrNone)	

		return r;

	count = 100;

	do	{	//	re-try up to 100 times if memory conditions are not correct

		TUint8* mem1 = NULL;

		TUint8* mem2 = NULL;

		TUint8* mem3 = NULL;

		r=ReAllocTest2(mem1, mem2, mem3);

		if (mem1)

			Kern::Free(mem1);

		if (mem2)

			Kern::Free(mem2);

		if (mem3)

			Kern::Free(mem3);

		} while(((r == KErrNoMemory)||(r == KErrUnknown)) && --count);

	return r;

	}

// The actual size of the block allocated given the size requested.

#define ALIGNED_SIZE(aReqSize) (_ALIGN_UP(aReqSize + RHeap::EAllocCellSize, RHeap::ECellAlignment) - RHeap::EAllocCellSize)

// We only allocate blocks where the size we get is the size we ask for - this

// just makes testing easier.

const TInt KSize = ALIGNED_SIZE(200), KHalfSize = ALIGNED_SIZE(100), KSmallSize = ALIGNED_SIZE(50);

TInt DMemoryTestChannel::ReAllocTest1()

	{

	// Test case where cell grows

	// 

	// Expected heap layout:

	//   1: [-mem1-------]

	//   2: [-mem1-]

	//   3: [-mem1-------]

	TInt err = KErrNone;