diff -r 4122176ea935 -r 56f325a607ea kernel/eka/memmodel/epoc/flexible/mmu/mramalloc.cpp
--- a/kernel/eka/memmodel/epoc/flexible/mmu/mramalloc.cpp	Mon Dec 21 16:14:42 2009 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,695 +0,0 @@
-// Copyright (c) 1998-2009 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 "Symbian Foundation License v1.0"
-// which accompanies this distribution, and is available
-// at the URL "http://www.symbianfoundation.org/legal/sfl-v10.html".
-//
-// Initial Contributors:
-// Nokia Corporation - initial contribution.
-//
-// Contributors:
-//
-// Description:
-//
-
-#include <plat_priv.h>
-#include "mramalloc.h"
-
-struct SGroup
-	{
-	TBitMapAllocator* iBma;
-	TPhysAddr iPhysBase;
-	TInt iNumBase;
-	TUint8 iPwrBlock;
-	};
-
-class DRamAllocator : public DRamAllocatorBase
-	{
-public:
-	virtual TInt Create(const SRamInfo& aInfo, const SRamBank* aPowerBanks);
-	virtual TInt MarkPageAllocated(TPhysAddr aAddr);
-	virtual TInt FreeRamPage(TPhysAddr aAddr);
-	virtual void FreeRamPages(TPhysAddr* aPageList, TInt aNumPages);
-	virtual TInt AllocRamPages(TPhysAddr* aPageList, TInt aNumPages);
-	virtual TInt AllocContiguousRam(TInt aNumPages, TPhysAddr& aPhysAddr, TInt aAlign=0);
-	virtual TInt SetPhysicalRamState(TPhysAddr aBase, TInt aSize, TBool aState);
-	virtual TUint TotalPhysicalRamPages() {return iTotalRamPages;};
-#ifdef KMMU
-	void DebugDump();
-#endif
-private:
-	SGroup* GetGroupAndOffset(TPhysAddr aAddr, TInt& aOffset);
-	void MarkPagesAllocated(TInt aPageNum, TInt aCount);
-	TInt FindContiguousRam(TInt aNumPages, TInt aAlignWrtPage, TUint8* aPermute, TInt& aPageNum);
-private:
-	enum TPanic
-		{
-		// don't use 0
-		EDoNotUse=0,
-		EBytesFromStartInvalid,
-		EBytesFromEndInvalid,
-		EAreasTooSmall,
-		ETooManyPowerBlocks,
-		EInvalidPowerBlocks,
-		EDoMarkPagesAllocated1,
-		EAllocRamPagesInconsistent,
-		};
-private:
-	TInt iTotalRamPages;
-	TInt iNumGroups;				// group corresponds to BMA
-	TInt iAreaSize;					// size of an area in bytes
-	TInt iAreaShift;				// log2(areasize)
-	TUint32 iAreaMask;				// iAreaSize-1
-	TInt iAreaPages;				// size of an area in pages
-	TInt iAreaPageShift;			// log2(areapages)
-	TUint32 iAreaPageMask;			// iAreaPages-1
-	TInt iNumAreas;					// number of areas recognised (size of iPhysAddrLUT)
-	SGroup* iGroups;				// per-group info
-	TUint8* iGroupPowerOrder;		// table of indices into above tables in power block order
-	TUint8* iPhysAddrLUT;			// table of indices indexed by (physaddr-physaddrbase)>>areashift
-	TUint8* iPageNumLUT;			// table of indices indexed by pagenum>>areapageshift
-	TPhysAddr iPhysAddrBase;		// lowest valid physical address
-	TPhysAddr iPhysAddrTop;			// highest valid physical address+1
-	};
-
-DRamAllocatorBase* DRamAllocatorBase::New()
-	{
-	return new DRamAllocator;
-	}
-
-DRamAllocatorBase* DRamAllocatorBase::New(const SRamInfo& aInfo, TInt aPageShift, const SRamBank* aPowerBanks)
-	{
-	DRamAllocatorBase* pA=New();
-	if (!pA)
-		Panic(KErrNoMemory);
-	pA->iPageShift=aPageShift;
-	pA->iPageSize=1<<aPageShift;
-	TInt r=pA->Create(aInfo,aPowerBanks);
-	if (r!=KErrNone)
-		Panic(r);
-	return pA;
-	}
-
-void DRamAllocatorBase::Panic(TInt aPanic)
-	{
-	Kern::Fault("RAM-ALLOC", aPanic);
-	}
-
-#ifdef KMMU
-void HexDump32(const TAny* a, TInt n, const char* s)
-	{
-	const TUint32* p=(const TUint32*)a;
-	Kern::Printf(s);
-	TInt i=0;
-	while(n)
-		{
-		TBuf8<80> b;
-		b.AppendNumFixedWidth(i,EHex,4);
-		b.Append(':');
-		TInt m=Min(n,4);
-		n-=m;
-		i+=m;
-		while(m--)
-			{
-			b.Append(' ');
-			b.AppendNumFixedWidth(*p++,EHex,8);
-			}
-		Kern::Printf("%S",&b);
-		}
-	}
-
-void HexDump8(const TAny* a, TInt n, const char* s)
-	{
-	const TUint8* p=(const TUint8*)a;
-	Kern::Printf(s);
-	TInt i=0;
-	while(n)
-		{
-		TBuf8<80> b;
-		b.AppendNumFixedWidth(i,EHex,4);
-		b.Append(':');
-		TInt m=Min(n,16);
-		n-=m;
-		i+=m;
-		while(m--)
-			{
-			b.Append(' ');
-			b.AppendNumFixedWidth(*p++,EHex,2);
-			}
-		Kern::Printf("%S",&b);
-		}
-	}
-
-void DRamAllocator::DebugDump()
-	{
-	Kern::Printf("PageSize=%08x PageShift=%d",iPageSize,iPageShift);
-	Kern::Printf("AreaSize=%08x AreaShift=%d AreaMask=%08x",iAreaSize,iAreaShift,iAreaMask);
-	Kern::Printf("AreaPages=%08x AreaPageShift=%d AreaPageMask=%08x",iAreaPages,iAreaPageShift,iAreaPageMask);
-	Kern::Printf("Total Pages=%08x Total Free=%08x",iTotalRamPages,iTotalFreeRamPages);
-	Kern::Printf("Number of areas=%08x, number of groups=%08x",iNumAreas,iNumGroups);
-	Kern::Printf("Number of power blocks=%d, PowerState=%08x",iNumPowerBlocks,iPowerState);
-	Kern::Printf("PhysAddrBase=%08x, PhysAddrTop=%08x",iPhysAddrBase,iPhysAddrTop);
-
-	TInt i;
-	Kern::Printf("Group Info:");
-	for (i=0; i<iNumGroups; ++i)
-		{
-		SGroup& g=iGroups[i];
-		TBitMapAllocator& b=*g.iBma;
-		Kern::Printf("%02x: Avail %08x Size %08x Phys %08x Num %08x Pwr %02x",i,b.iAvail,b.iSize,
-										g.iPhysBase,g.iNumBase,g.iPwrBlock);
-		}
-	if (iGroupPowerOrder)
-		HexDump8(iGroupPowerOrder,iNumGroups,"GroupPowerOrder:");
-	HexDump8(iPhysAddrLUT,iNumAreas,"PhysAddrLUT:");
-	HexDump8(iPageNumLUT,iTotalRamPages>>iAreaPageShift,"PageNumLUT:");
-	HexDump32(iPowerBlockPages,iNumPowerBlocks,"PowerBlockPages:");
-	}
-#endif
-
-TInt CountBanks(const SRamBank* aBankList)
-	{
-	TInt banks=0;
-	for (; aBankList->iSize; ++banks, ++aBankList);
-	return banks;
-	}
-
-TInt CalcAreaShift(const SRamBank* aBankList)
-	{
-	TUint32 mask=0;
-	for (; aBankList->iSize; ++aBankList)
-		{
-		TUint32 base=aBankList->iBase;
-		TUint32 end=base+aBankList->iSize-1;
-		__KTRACE_OPT(KBOOT,Kern::Printf("Base=%08x End=%08x",base,end));
-		mask|=base;
-		mask|=~end;
-		}
-	return __e32_find_ls1_32(mask);
-	}
-
-TUint32 TotalBankSize(const SRamBank* aBankList)
-	{
-	TUint32 size=0;
-	for (; aBankList->iSize; ++aBankList)
-		size+=aBankList->iSize;
-	return size;
-	}
-
-TInt DRamAllocator::Create(const SRamInfo& a, const SRamBank* aP)
-	{
-	__KTRACE_OPT(KMMU,Kern::Printf("DRamAllocator::Create"));
-
-	TInt num_boot_banks=CountBanks(a.iBanks);
-	TUint32 total_ram_size=TotalBankSize(a.iBanks);
-	__KTRACE_OPT(KMMU,Kern::Printf("#banks from bootstrap=%d",num_boot_banks));
-	__KTRACE_OPT(KMMU,Kern::Printf("Total size=%08x",total_ram_size));
-	iTotalRamPages=total_ram_size>>iPageShift;
-	iTotalFreeRamPages=iTotalRamPages;
-	__KTRACE_OPT(KMMU,Kern::Printf("Total size=%08x, total pages=%08x",total_ram_size,iTotalRamPages));
-
-	__KTRACE_OPT(KMMU,Kern::Printf("Calculate area shift from bootstrap blocks"));
-	iAreaShift=CalcAreaShift(a.iBanks);
-	__KTRACE_OPT(KMMU,Kern::Printf("iAreaShift=%d",iAreaShift));
-	iNumPowerBlocks=1;
-	if (aP)
-		{
-		iNumPowerBlocks=CountBanks(aP);
-		__KTRACE_OPT(KMMU,Kern::Printf("iNumPowerBlocks=%d",iNumPowerBlocks));
-		if (iNumPowerBlocks>32)
-			return ETooManyPowerBlocks;
-		__KTRACE_OPT(KMMU,Kern::Printf("Calculate area shift from power blocks"));
-		TInt as=CalcAreaShift(aP);
-		__KTRACE_OPT(KMMU,Kern::Printf("area shift=%d",as));
-		if (as<iAreaShift)
-			iAreaShift=as;
-		}
-	if (iAreaShift<16 || iAreaShift<iPageShift)
-		return EAreasTooSmall;
-	iAreaSize=1<<iAreaShift;
-	iAreaMask=iAreaSize-1;
-	iAreaPageShift=iAreaShift-iPageShift;
-	iAreaPages=1<<iAreaPageShift;
-	iAreaPageMask=iAreaPages-1;
-	__KTRACE_OPT(KMMU,Kern::Printf("iAreaShift=%d",iAreaShift));
-	
-	iPhysAddrBase=a.iBanks[0].iBase;
-	const SRamBank& last_boot_bank=a.iBanks[num_boot_banks-1];
-	iPhysAddrTop=last_boot_bank.iBase+last_boot_bank.iSize;
-	__KTRACE_OPT(KMMU,Kern::Printf("PA base=%08x, PA top=%08x",iPhysAddrBase,iPhysAddrTop));
-	iNumAreas=(iPhysAddrTop-iPhysAddrBase)>>iAreaShift;
-	__KTRACE_OPT(KMMU,Kern::Printf("iNumAreas=%08x",iNumAreas));
-
-	iPhysAddrLUT=(TUint8*)Kern::Alloc(iNumAreas);
-	if (!iPhysAddrLUT)
-		return KErrNoMemory;
-	iPageNumLUT=(TUint8*)Kern::Alloc(iNumAreas);	// overallocate temporarily
-	if (!iPageNumLUT)
-		return KErrNoMemory;
-	iPowerBlockPages=(TInt*)Kern::AllocZ(iNumPowerBlocks*sizeof(TInt));
-	if (!iPowerBlockPages)
-		return KErrNoMemory;
-
-	// coalesce contiguous boot banks
-	SRamBank* phys_banks = (SRamBank*)Kern::Alloc(num_boot_banks*sizeof(SRamBank));
-	if (!phys_banks)
-		return KErrNoMemory;
-	SRamBank* pD=phys_banks;
-	const SRamBank* pBoot=a.iBanks;
-	const SRamBank* pE=pBoot+num_boot_banks;
-	TPhysAddr base=0;
-	TPhysAddr end=0;
-	for (; pBoot<=pE; ++pBoot)
-		{
-		if (pBoot==pE || pBoot->iBase!=end)
-			{
-			if (end)
-				{
-				pD->iBase=base;
-				pD->iSize=end-base;
-				++pD;
-				__KTRACE_OPT(KMMU,Kern::Printf("Coalesced bank: %08x-%08x",base,end));
-				}
-			if (pBoot<pE)
-				{
-				base=pBoot->iBase;
-				end=base+pBoot->iSize;
-				}
-			}
-		else
-			end+=pBoot->iSize;
-		}
-	SRamBank* pPhysEnd=pD;
-	__KTRACE_OPT(KMMU,Kern::Printf("#Coalesced banks: %d",pD-phys_banks));
-
-	// work out groups
-	TInt start_area;
-	TInt num_areas;
-	TInt phys_bank;
-	TInt pwr_bank;
-	memset(iPhysAddrLUT,0xff,iNumAreas);
-	pD=phys_banks;
-	for (; pD<pPhysEnd; ++pD)
-		{
-		start_area=(pD->iBase-iPhysAddrBase)>>iAreaShift;
-		num_areas=pD->iSize>>iAreaShift;
-		phys_bank=pD-phys_banks;
-		memset(iPhysAddrLUT+start_area, phys_bank, num_areas);
-		}
-
-	if (aP)
-		{
-		memset(iPageNumLUT,0xff,iNumAreas);
-		const SRamBank* pB=aP;
-		const SRamBank* pPwrEnd=aP+iNumPowerBlocks;
-		for (; pB<pPwrEnd; ++pB)
-			{
-			start_area=(Max(pB->iBase,iPhysAddrBase)-iPhysAddrBase)>>iAreaShift;
-			num_areas=(TInt)Min(TUint32(pB->iSize)>>iAreaShift, TUint32(iNumAreas-start_area));
-			pwr_bank=pB-aP;
-			memset(iPageNumLUT+start_area, pwr_bank, num_areas);
-			}
-		}
-	Kern::Free(phys_banks);
-
-	phys_bank=0xff;
-	pwr_bank=-1;
-	TInt area;
-	iNumGroups=0;
-	for (area=0; area<=iNumAreas; ++area)
-		{
-		TInt pb=(area<iNumAreas)?iPhysAddrLUT[area]:0xff;
-		TInt pwb=aP?((area<iNumAreas)?iPageNumLUT[area]:0xff):-1;
-		__KTRACE_OPT(KMMU,Kern::Printf("Area %04x (%08x) : pb=%02x pwb=%02x",area,iPhysAddrBase+(area<<iAreaShift),pb,pwb));
-		if (pb!=phys_bank || pwb!=pwr_bank)
-			{
-			if (pb!=0xff && pwb==0xff)
-				return EInvalidPowerBlocks;
-			if (phys_bank!=0xff)
-				++iNumGroups;
-			phys_bank=pb;
-			if (aP)
-				pwr_bank=pwb;
-			}
-		}
-	__KTRACE_OPT(KMMU,Kern::Printf("iNumGroups=%d",iNumGroups));
-	iGroups=(SGroup*)Kern::Alloc(iNumGroups*sizeof(SGroup));
-	if (!iGroups)
-		return KErrNoMemory;
-	if (aP)
-		{
-		iGroupPowerOrder = (TUint8*)Kern::Alloc(iNumGroups);
-		if (!iGroupPowerOrder)
-			return KErrNoMemory;
-		}
-	start_area=0;
-	phys_bank=0xff;
-	pwr_bank=0;
-	TInt group=0;
-	TInt page_number=0;
-	for (area=0; area<=iNumAreas; ++area)
-		{
-		TInt pb=(area<iNumAreas)?iPhysAddrLUT[area]:0xff;
-		TInt pwb=aP?((area<iNumAreas)?iPageNumLUT[area]:0xff):0;
-		if (pb!=phys_bank || (aP && pwb!=pwr_bank))
-			{
-			TInt group_num_areas=area-start_area;
-			if (phys_bank!=0xff)
-				{
-				SGroup& g=iGroups[group];
-				TInt group_num_pages=TUint32(group_num_areas)<<iAreaPageShift;
-				g.iBma=TBitMapAllocator::New(group_num_pages, ETrue);
-				if (!g.iBma)
-					return KErrNoMemory;
-				g.iPhysBase=(TPhysAddr(start_area)<<iAreaShift)+iPhysAddrBase;
-				g.iNumBase=page_number;
-				memset(iPhysAddrLUT+start_area, group, group_num_areas);
-				memset(iPageNumLUT+(page_number>>iAreaPageShift), group, group_num_areas);
-				page_number+=group_num_pages;
-				g.iPwrBlock=pwr_bank;
-				__KTRACE_OPT(KMMU,Kern::Printf("Group %d: PhysBase=%08x NumBase=%08x PwrBlock=%02x NumPages=%08x",
-													group, g.iPhysBase, g.iNumBase, g.iPwrBlock, group_num_pages));
-				++group;
-				}
-			start_area=area;
-			phys_bank=pb;
-			if (aP)
-				pwr_bank=pwb;
-			}
-		}
-
-	// shrink iPageNumLUT to correct size
-	iPageNumLUT=(TUint8*)Kern::ReAlloc(iPageNumLUT, iTotalRamPages>>iAreaPageShift);
-
-	if (aP)
-		{
-		// work out power block ordering of groups
-		TBool identity=ETrue;
-		TInt last_pwb=-1;
-		group=0;
-		while(group<iNumGroups)
-			{
-			TInt first_pwb=256;
-			TInt i=0;
-			TInt j=0;
-			for (; i<iNumGroups; ++i)
-				{
-				TInt gpwb=iGroups[i].iPwrBlock;
-				if (gpwb>last_pwb && gpwb<first_pwb)
-					{
-					j=i;
-					first_pwb=gpwb;
-					}
-				}
-			do	{
-				if (j!=group)
-					identity=EFalse;
-				iGroupPowerOrder[group++]=j++;
-				} while (j<iNumGroups && iGroups[j].iPwrBlock==first_pwb);
-			last_pwb=first_pwb;
-			}
-		if (identity)
-			{
-			// power order and physical address order coincide so no need to keep iGroupPowerOrder
-			Kern::Free(iGroupPowerOrder);
-			iGroupPowerOrder=NULL;
-			}
-		}
-
-	// Now mark any reserved regions as allocated
-	const SRamBank* pB = pE + 1;	// first reserved block specifier
-	for (; pB->iSize; ++pB)
-		{
-		__KTRACE_OPT(KMMU, Kern::Printf("Reserve physical block %08x+%x", pB->iBase, pB->iSize));
-		TInt r = SetPhysicalRamState(pB->iBase, pB->iSize, EFalse);
-		__KTRACE_OPT(KMMU, Kern::Printf("Reserve returns %d", r));
-		if (r!=KErrNone)
-			return r;
-		}
-
-	__KTRACE_OPT(KMMU,DebugDump());
-	return KErrNone;
-	}
-
-SGroup* DRamAllocator::GetGroupAndOffset(TPhysAddr aAddr, TInt& aOffset)
-	{
-	if (aAddr<iPhysAddrBase || aAddr>=iPhysAddrTop)
-		return NULL;
-	TInt area=TInt((aAddr-iPhysAddrBase)>>iAreaShift);
-	TInt group=iPhysAddrLUT[area];
-	if (group==0xff)
-		return NULL;
-	SGroup& g=iGroups[group];
-	aOffset=(aAddr-g.iPhysBase)>>iPageShift;
-	return &g;
-	}
-
-void DRamAllocator::MarkPagesAllocated(TInt aPageNum, TInt aCount)
-	{
-	__KTRACE_OPT(KMMU,Kern::Printf("DRamAllocator::MarkPagesAllocated(%x+%x)",aPageNum,aCount));
-	if ((TUint32(aPageNum)>=TUint32(iTotalRamPages)) || (TUint32(aCount)>TUint32(iTotalRamPages-aPageNum)))
-		Panic(EDoMarkPagesAllocated1);
-	TInt area=aPageNum>>iAreaPageShift;
-	SGroup* pG=iGroups+iPageNumLUT[area];
-	iTotalFreeRamPages-=aCount;
-	while(aCount)
-		{
-		TInt gpnb=pG->iNumBase;
-		TBitMapAllocator& bma=*pG->iBma;
-		TInt gsz=bma.iSize;
-		TInt ix=aPageNum-gpnb;
-		TInt count=Min(gsz-ix,aCount);
-		bma.Alloc(ix,count);
-		TInt pwb=pG->iPwrBlock;
-		iPowerBlockPages[pwb]+=count;
-		iPowerState|=(1u<<pwb);
-		aCount-=count;
-		aPageNum+=count;
-		++pG;
-		}
-	}
-
-TInt DRamAllocator::MarkPageAllocated(TPhysAddr aAddr)
-	{
-	__KTRACE_OPT(KMMU,Kern::Printf("DRamAllocator::MarkPageAllocated %08x",aAddr));
-	TInt n;
-	SGroup* g=GetGroupAndOffset(aAddr,n);
-	if (!g)
-		return KErrArgument;
-	__KTRACE_OPT(KMMU2,Kern::Printf("Group %d index %04x",g-iGroups,n));
-	TBitMapAllocator& bma=*g->iBma;
-	if (bma.NotFree(n,1))
-		{
-		__KTRACE_OPT(KMMU,Kern::Printf("Page already allocated"));
-		return KErrAlreadyExists;			// page is already allocated
-		}
-	bma.Alloc(n,1);
-	--iTotalFreeRamPages;
-	TInt pwb=g->iPwrBlock;
-	if (++iPowerBlockPages[pwb]==1)
-		iPowerState|=(1u<<pwb);
-	__KTRACE_OPT(KMMU,Kern::Printf("Total free RAM pages now = %d",iTotalFreeRamPages));
-	return KErrNone;
-	}
-
-TInt DRamAllocator::FreeRamPage(TPhysAddr aAddr)
-	{
-	__KTRACE_OPT(KMMU,Kern::Printf("FreeRamPage %08x",aAddr));
-	TInt n;
-	SGroup* g=GetGroupAndOffset(aAddr,n);
-	if (!g)
-		return KErrArgument;
-	__KTRACE_OPT(KMMU2,Kern::Printf("Group %d index %04x",g-iGroups,n));
-	TBitMapAllocator& bma=*g->iBma;
-	bma.Free(n);
-	++iTotalFreeRamPages;
-	TInt pwb=g->iPwrBlock;
-	if (--iPowerBlockPages[pwb]==0)
-		iPowerState&=~(1u<<pwb);
-	return KErrNone;
-	}
-
-void DRamAllocator::FreeRamPages(TPhysAddr* aPageList, TInt aNumPages)
-	{
-	__KTRACE_OPT(KMMU,Kern::Printf("FreeRamPages count=%08x",aNumPages));
-	while(aNumPages--)
-		{
-		TPhysAddr first_pa=*aPageList++;
-		if (first_pa==NULL_PAGE)
-			continue;
-		TInt ix;
-		SGroup* g=GetGroupAndOffset(first_pa,ix);
-		if (!g)
-			continue;
-		TBitMapAllocator& bma=*g->iBma;
-		TInt gp_rem=bma.iSize-ix;
-		__KTRACE_OPT(KMMU,Kern::Printf("1st PA=%08x Group %d index %04x",first_pa,g-iGroups,ix));
-		TInt n=1;
-		TPhysAddr pa=first_pa+iPageSize;
-		while (--gp_rem && aNumPages && *aPageList==pa)
-			{
-			++n;
-			--aNumPages;
-			++aPageList;
-			pa+=iPageSize;
-			}
-		__KTRACE_OPT(KMMU2,Kern::Printf("%d consecutive pages, gp_rem=%x, %d remaining pages",n,gp_rem,aNumPages));
-		bma.Free(ix,n);
-		iTotalFreeRamPages+=n;
-		TInt pwb=g->iPwrBlock;
-		if ((iPowerBlockPages[pwb]-=n)==0)
-			iPowerState&=~(1u<<pwb);
-		}
-	}
-
-/**
-@return 0 on success, on failure, the number of extra pages required to fulfill the request
-*/
-TInt DRamAllocator::AllocRamPages(TPhysAddr* aPageList, TInt aNumPages)
-	{
-	__KTRACE_OPT(KMMU,Kern::Printf("AllocRamPages %x",aNumPages));
-	TInt numMissing = aNumPages-iTotalFreeRamPages;
-	if (numMissing>0)
-		return numMissing;
-	iTotalFreeRamPages-=aNumPages;
-	TInt gix;
-	for (gix=0; aNumPages && gix<iNumGroups; ++gix)
-		{
-		TInt group=iGroupPowerOrder?iGroupPowerOrder[gix]:gix;
-		SGroup& g=iGroups[group];
-		TBitMapAllocator& bma=*g.iBma;
-		TPhysAddr gpb=g.iPhysBase;
-		TInt got=bma.AllocList(aNumPages, (TInt*)aPageList);
-		if (got)
-			{
-			TInt pwb=g.iPwrBlock;
-			TPhysAddr* pE=aPageList+got;
-			while(aPageList<pE)
-				{
-				TInt ix=*aPageList;
-				*aPageList++=gpb+(ix<<iPageShift);
-				__KTRACE_OPT(KMMU,Kern::Printf("Got page @%08x",gpb+(ix<<iPageShift)));
-				}
-			aNumPages-=got;
-			iPowerBlockPages[pwb]+=got;
-			iPowerState |= (1u<<pwb);
-			}
-		}
-	__ASSERT_ALWAYS(aNumPages==0, Panic(EAllocRamPagesInconsistent));
-	return 0;
-	}
-
-TInt DRamAllocator::FindContiguousRam(TInt aNumPages, TInt aAlignWrtPage, TUint8* aPermute, TInt& aPageNum)
-	{
-	__KTRACE_OPT(KMMU,Kern::Printf("FindContiguousRam np=%d align=%d",aNumPages,aAlignWrtPage));
-	TUint32 alignsize=1u<<aAlignWrtPage;
-	TUint32 alignmask=alignsize-1;
-	__KTRACE_OPT(KMMU,Kern::Printf("alignsize=%08x alignmask=%08x",alignsize,alignmask));
-	TInt base=KErrNotFound;
-	TInt gplen=0;
-	TInt carry=0;
-	TInt gix;
-	for (gix=0; gix<iNumGroups; ++gix)
-		{
-		TInt group=aPermute?aPermute[gix]:gix;
-		SGroup& g=iGroups[group];
-		TBitMapAllocator& bma=*g.iBma;
-		TInt gpb=TInt(g.iPhysBase>>iPageShift);
-		if (gpb!=base+gplen)
-			{
-			// this group is not contiguous with previous one
-			carry=0;
-			}
-		base=gpb;
-		gplen=bma.iSize;
-		__KTRACE_OPT(KMMU,Kern::Printf("FCR: base=%08x gplen=%08x carry=%08x",base,gplen,carry));
-		TInt l;
-		TInt r=bma.AllocAligned(aNumPages, aAlignWrtPage, base, EFalse, carry, l);
-		__KTRACE_OPT(KMMU,Kern::Printf("FCR: r=%08x",r));
-		if (r>=0)
-			{
-			TInt p=(base+r-carry+alignmask)&~alignmask;
-			aPageNum=g.iNumBase+p-base;
-			return p;
-			}
-		}
-	return KErrNotFound;
-	}
-
-TInt DRamAllocator::AllocContiguousRam(TInt aSize, TPhysAddr& aPhysAddr, TInt aAlign)
-	{
-	__KTRACE_OPT(KMMU,Kern::Printf("AllocContiguousRam size %08x align %d",aSize,aAlign));
-	TInt npages=(aSize+iPageSize-1)>>iPageShift;
-	TInt align_wrt_page=Max(aAlign-iPageShift,0);
-
-	TInt pagenum;
-	TInt found=FindContiguousRam(npages, align_wrt_page, iGroupPowerOrder, pagenum);
-	if (found<0 && iGroupPowerOrder)
-		found=FindContiguousRam(npages, align_wrt_page, NULL, pagenum);
-	if (found<0)
-		return KErrNoMemory;
-	aPhysAddr=TPhysAddr(found)<<iPageShift;
-	__KTRACE_OPT(KMMU,Kern::Printf("AllocContiguousRam returns %08x(%x)",aPhysAddr,pagenum));
-	MarkPagesAllocated(pagenum, npages);
-	return KErrNone;
-	}
-
-TInt DRamAllocator::SetPhysicalRamState(TPhysAddr aBase, TInt aSize, TBool aState)
-	{
-	__KTRACE_OPT(KMMU,Kern::Printf("SetPhysicalRamState(%08x,%x,%d)",aBase,aSize,aState?1:0));
-	TUint32 m=iPageSize-1;
-	aSize+=(aBase&m);
-	aBase&=~m;
-	TInt npages=(aSize+m)>>iPageShift;
-	__KTRACE_OPT(KMMU,Kern::Printf("Rounded base %08x npages=%x",aBase,npages));
-	TInt ix0;
-	SGroup* g0=GetGroupAndOffset(aBase,ix0);
-	if (!g0)
-		return KErrArgument;
-	if ((TUint32)aSize>iPhysAddrTop-aBase)
-		return KErrArgument;
-	SGroup* g=g0;
-	SGroup* gE=iGroups+iNumGroups;
-	TPhysAddr base=aBase;
-	TInt n=npages;
-	TInt ix=ix0;
-	TInt r=KErrNone;
-	TInt c=-1;
-	__KTRACE_OPT(KMMU2,Kern::Printf("Group %d index %x g=%08x gE=%08x n=%x base=%08x",g-iGroups,ix,g,gE,n,base));
-	for (; n && g<gE && g->iPhysBase+(ix<<iPageShift)==base ; ++g, n-=c, ix=0, base+=(TPhysAddr(c)<<iPageShift))
-		{
-		TBitMapAllocator& bma=*g->iBma;
-		TInt gp_rem=bma.iSize-ix;
-		c=Min(n, gp_rem);
-		__KTRACE_OPT(KMMU2,Kern::Printf("Group %d pages %x+%x base %08x",g-iGroups,ix,c,base));
-		if(aState)
-			{
-			if(bma.NotAllocated(ix,c))
-				r=KErrGeneral;
-			}
-		else
-			{
-			if(bma.NotFree(ix,c))
-				r=KErrInUse;
-			}
-		}
-	if (n)
-		return KErrArgument;	// not all of the specified range exists
-	if (r!=KErrNone)
-		return r;				// some pages were already free/allocated
-	iTotalFreeRamPages += (aState ? npages : -npages);
-	for (g=g0, n=npages, ix=ix0; n; ++g, n-=c, ix=0)
-		{
-		TBitMapAllocator& bma=*g->iBma;
-		TInt pwb=g->iPwrBlock;
-		TInt& p=iPowerBlockPages[pwb];
-		TUint32 pm=1u<<pwb;
-		TInt gp_rem=bma.iSize-ix;
-		c=Min(n, gp_rem);
-		__KTRACE_OPT(KMMU2,Kern::Printf("Group %d pages %x+%x base %08x",g-iGroups,ix,c,base));
-		aState ? (bma.Free(ix,c), (p||(iPowerState|=pm)), p+=c) : (bma.Alloc(ix,c), ((p-=c)||(iPowerState&=~pm)) );
-		}
-	return KErrNone;
-	}
-