kernel/eka/memmodel/epoc/flexible/mmu/mmu.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 26 Jan 2010 13:13:38 +0200
changeset 47 46fffbe7b5a7
parent 45 329ab0095843
permissions -rw-r--r--
Revision: 201004 Kit: 201004
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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// Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of the License "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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#include "memmodel.h"
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#include "kernel/cache_maintenance.inl"
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#include <kernel/cache.h>
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#include <ramalloc.h>
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#include <defrag.h>
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#include "mm.h"
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#include "mmu.h"
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#include "mpager.h"
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#include "mmapping.h"
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#include "mobject.h"
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#include "mmanager.h"
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#include "mpagearray.h"
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//
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// SPageInfo
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//
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// check enough space for page infos...
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__ASSERT_COMPILE((KPageInfoLinearEnd-KPageInfoLinearBase)/sizeof(SPageInfo)==(1<<(32-KPageShift)));
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// check KPageInfoShift...
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__ASSERT_COMPILE(sizeof(SPageInfo)==(1<<KPageInfoShift));
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SPageInfo* SPageInfo::SafeFromPhysAddr(TPhysAddr aAddress)
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	{
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	__NK_ASSERT_DEBUG((aAddress&KPageMask)==0);
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	TUint index = aAddress>>(KPageShift+KPageShift-KPageInfoShift);
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	TUint flags = ((TUint8*)KPageInfoMap)[index>>3];
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	TUint mask = 1<<(index&7);
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	if(!(flags&mask))
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		return 0; // no SPageInfo for aAddress
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	SPageInfo* info = FromPhysAddr(aAddress);
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	if(info->iType==SPageInfo::EInvalid)
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		return 0;
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	return info;
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	}
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#ifdef _DEBUG
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void SPageInfo::CheckAccess(const char* aMessage, TUint aFlags)
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	{
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	if(K::Initialising || NKern::Crashed())
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		return;
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	if((aFlags&ECheckNotAllocated) && (iType!=EUnknown))
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		{
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		Kern::Printf("SPageInfo[0x%08x]::CheckAccess failed, PhysAddr()=0x%08x, iType==%d : %s",this,PhysAddr(),iType,aMessage);
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		__NK_ASSERT_DEBUG(0);
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		goto fail;
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		}
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	if((aFlags&ECheckNotUnused) && (iType==EUnused))
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		{
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		Kern::Printf("SPageInfo[0x%08x]::CheckAccess failed, PhysAddr()=0x%08x, iType==%d : %s",this,PhysAddr(),iType,aMessage);
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		__NK_ASSERT_DEBUG(0);
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		goto fail;
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		}
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	if((aFlags&ECheckUnused) && (iType!=EUnused))
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		{
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		Kern::Printf("SPageInfo[0x%08x]::CheckAccess failed, PhysAddr()=0x%08x, iType==%d : %s",this,PhysAddr(),iType,aMessage);
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		__NK_ASSERT_DEBUG(0);
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		goto fail;
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		}
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	if((aFlags&ECheckNotPaged) && (iPagedState!=EUnpaged))
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		{
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		Kern::Printf("SPageInfo[0x%08x]::CheckAccess failed, PhysAddr()=0x%08x, iPagedState=%d : %s",this,PhysAddr(),iPagedState,aMessage);
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		__NK_ASSERT_DEBUG(0);
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		goto fail;
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    89
		}
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    90
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	if((aFlags&ECheckRamAllocLock) && !RamAllocLock::IsHeld())
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    92
		{
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    93
		Kern::Printf("SPageInfo[0x%08x]::CheckAccess failed, PhysAddr()=0x%08x, iType==%d : %s",this,PhysAddr(),iType,aMessage);
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		__NK_ASSERT_DEBUG(0);
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    95
		goto fail;
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    96
		}
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    97
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	if((aFlags&ENoCheckMmuLock) || MmuLock::IsHeld())
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    99
		return;
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   100
fail:
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   101
	Kern::Printf("SPageInfo[0x%08x]::CheckAccess failed, PhysAddr()=0x%08x : %s",this,PhysAddr(),aMessage);
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   102
	Mmu::Panic(Mmu::EUnsafePageInfoAccess);
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   103
	}
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   104
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   105
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   106
void SPageInfo::Dump()
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   107
	{
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   108
	Kern::Printf("SPageInfo for page %x = %d,%d,%02x,0x%08x,0x%x,%d",PhysAddr(),iType,iPagedState,iFlags,iOwner,iIndex,iPinCount);
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	}
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#endif
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//
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// SPageTableInfo
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//
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// check enough space for page table infos...
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__ASSERT_COMPILE((KPageTableInfoEnd-KPageTableInfoBase)/sizeof(SPageTableInfo)
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					>=(KPageTableEnd-KPageTableBase)/KPageTableSize);
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// check KPtBlockShift...
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__ASSERT_COMPILE((sizeof(SPageTableInfo)<<KPtBlockShift)==KPageSize);
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#ifdef _DEBUG
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TBool SPageTableInfo::CheckPageCount()
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	{
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	__NK_ASSERT_DEBUG(MmuLock::IsHeld());
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	TPte* pt = PageTable();
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	TUint realCount = 0;
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	do if(*pt++) ++realCount;
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	while(TLinAddr(pt)&(KPageTableMask/sizeof(TPte)*sizeof(TPte)));
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	if(iPageCount==realCount)
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		return true;
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	Kern::Printf("CheckPageCount Failed: pt=0x%08x count=%d realCount=%d",TLinAddr(pt)-KPageTableSize,iPageCount,realCount);
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	return false;
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	}
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   142
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void SPageTableInfo::CheckChangeUse(const char* aName)
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	{
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	if(K::Initialising)
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		return;
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	if(PageTablesLockIsHeld() && MmuLock::IsHeld())
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		return;
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	Kern::Printf("SPageTableInfo::CheckChangeUse failed : %s",aName);
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	Mmu::Panic(Mmu::EUnsafePageTableInfoAccess);
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	}
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void SPageTableInfo::CheckCheckUse(const char* aName)
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	{
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	if(K::Initialising)
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		return;
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	if(PageTablesLockIsHeld() || MmuLock::IsHeld())
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		return;
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	Kern::Printf("SPageTableInfo::CheckCheckUse failed : %s",aName);
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	Mmu::Panic(Mmu::EUnsafePageTableInfoAccess);
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	}
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void SPageTableInfo::CheckAccess(const char* aName)
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	{
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	if(K::Initialising)
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		return;
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	if(MmuLock::IsHeld())
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		return;
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	Kern::Printf("SPageTableInfo::CheckAccess failed : %s",aName);
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	Mmu::Panic(Mmu::EUnsafePageTableInfoAccess);
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	}
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void SPageTableInfo::CheckInit(const char* aName)
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	{
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	if(K::Initialising)
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		return;
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	if(PageTablesLockIsHeld() && iType==EUnused)
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		return;
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	Kern::Printf("SPageTableInfo::CheckInit failed : %s",aName);
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	Mmu::Panic(Mmu::EUnsafePageTableInfoAccess);
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	}
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#endif
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//
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// RamAllocLock
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//
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_LIT(KLitRamAlloc,"RamAlloc");
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_LIT(KLitPhysMemSync,"PhysMemSync");
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void RamAllocLock::Lock()
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	{
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	Mmu& m = TheMmu;
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	Kern::MutexWait(*m.iRamAllocatorMutex);
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	if(!m.iRamAllocLockCount++)
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		{
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		// first lock, so setup memory fail data...
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		m.iRamAllocFailed = EFalse;
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		__NK_ASSERT_DEBUG(m.iRamAllocInitialFreePages==m.FreeRamInPages()); // free RAM shouldn't have changed whilst lock was held
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		}
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	}
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void RamAllocLock::Unlock()
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	{
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	Mmu& m = TheMmu;
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	if(--m.iRamAllocLockCount)
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		{
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		Kern::MutexSignal(*m.iRamAllocatorMutex);
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		return;
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		}
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	TBool failed = m.iRamAllocFailed;
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	TUint initial = m.iRamAllocInitialFreePages;
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	TUint final = m.FreeRamInPages();
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	m.iRamAllocInitialFreePages = final; // new baseline value
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	TUint changes = K::CheckFreeMemoryLevel(initial*KPageSize,final*KPageSize,failed);
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	if(changes)
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		{
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		__KTRACE_OPT(KMMU,Kern::Printf("RamAllocLock::Unlock() changes=%x",changes));
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		}
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	Kern::MutexSignal(*m.iRamAllocatorMutex);
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	}
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TBool RamAllocLock::Flash()
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	{
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	Unlock();
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	Lock();
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	return true; // lock was released
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	}
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TBool RamAllocLock::IsHeld()
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	{
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	Mmu& m = TheMmu;
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	return m.iRamAllocatorMutex->iCleanup.iThread == &Kern::CurrentThread() && m.iRamAllocLockCount;
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	}
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//
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// MmuLock
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//
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#ifdef _DEBUG
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TUint MmuLock::UnlockGuardNest =0;
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TUint MmuLock::UnlockGuardFail =0;
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#endif
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NFastMutex MmuLock::iLock;
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void MmuLock::Lock()
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	{
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	NKern::FMWait(&iLock);
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	}
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void MmuLock::Unlock()
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	{
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	UnlockGuardCheck();
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	NKern::FMSignal(&iLock);
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	}
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TBool MmuLock::Flash()
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	{
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	UnlockGuardCheck();
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	return NKern::FMFlash(&iLock);
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	}
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TBool MmuLock::IsHeld()
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	{
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	NFastMutex& m = iLock;
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	return m.HeldByCurrentThread();
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	}
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//
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// Initialisation
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//
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Mmu TheMmu;
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void Mmu::Init1Common()
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	{
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	__KTRACE_OPT2(KBOOT,KMMU,Kern::Printf("Mmu::Init1Common"));
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	// Mmu data
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	TUint pteType = PteType(ESupervisorReadWrite,true);
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	iTempPteCached = BlankPte((TMemoryAttributes)(EMemoryAttributeNormalCached|EMemoryAttributeDefaultShareable),pteType);
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	iTempPteUncached = BlankPte((TMemoryAttributes)(EMemoryAttributeNormalUncached|EMemoryAttributeDefaultShareable),pteType);
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	iTempPteCacheMaintenance = BlankPte((TMemoryAttributes)(CacheMaintenance::TemporaryMapping()|EMemoryAttributeDefaultShareable),pteType);
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	// other
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	PP::MaxUserThreadStack=0x14000;			// 80K - STDLIB asks for 64K for PosixServer!!!!
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	PP::UserThreadStackGuard=0x2000;		// 8K
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	PP::MaxStackSpacePerProcess=0x200000;	// 2Mb
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	K::SupervisorThreadStackSize=0x1000;	// 4K
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	PP::SupervisorThreadStackGuard=0x1000;	// 4K
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	K::MachineConfig=(TMachineConfig*)KMachineConfigLinAddr;
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	PP::RamDriveStartAddress=0;
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	PP::RamDriveRange=0;
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	PP::RamDriveMaxSize=0x20000000;	// 512MB, probably will be reduced later
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	K::MemModelAttributes=EMemModelTypeFlexible|EMemModelAttrNonExProt|EMemModelAttrKernProt|EMemModelAttrWriteProt|
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						EMemModelAttrVA|EMemModelAttrProcessProt|EMemModelAttrSameVA|EMemModelAttrSvKernProt|
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						EMemModelAttrIPCKernProt|EMemModelAttrRamCodeProt;
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	}
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#if 0
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void Mmu::VerifyRam()
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	{
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	Kern::Printf("Mmu::VerifyRam() pass 1");
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	RamAllocLock::Lock();
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	TPhysAddr p = 0;
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	do
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		{
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		SPageInfo* pi = SPageInfo::SafeFromPhysAddr(p);
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		if(pi)
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			{
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			Kern::Printf("%08x %d",p,pi->Type());
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			if(pi->Type()==SPageInfo::EUnused)
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				{
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				volatile TPhysAddr* b = (volatile TPhysAddr*)MapTemp(p,0);
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				b[0] = p;
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				b[1] = ~p;
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				__NK_ASSERT_DEBUG(b[0]==p);
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				__NK_ASSERT_DEBUG(b[1]==~p);
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				UnmapTemp();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   336
				}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   337
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   338
		p += KPageSize;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   339
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   340
	while(p);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   341
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   342
	TBool fail = false;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   343
	Kern::Printf("Mmu::VerifyRam() pass 2");
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   344
	do
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   345
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   346
		SPageInfo* pi = SPageInfo::SafeFromPhysAddr(p);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   347
		if(pi)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   348
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   349
			if(pi->Type()==SPageInfo::EUnused)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   350
				{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   351
				volatile TPhysAddr* b = (volatile TPhysAddr*)MapTemp(p,0);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   352
				if(b[0]!=p || b[1]!=~p)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   353
					{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   354
					fail = true;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   355
					Kern::Printf("%08x FAILED %x %x",b[0],b[1]);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   356
					}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   357
				UnmapTemp();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   358
				}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   359
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   360
		p += KPageSize;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   361
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   362
	while(p);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   363
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   364
	__NK_ASSERT_DEBUG(!fail);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   365
	RamAllocLock::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   366
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   367
#endif
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   368
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   369
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   370
void Mmu::Init2Common()
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   371
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   372
	__KTRACE_OPT2(KBOOT,KMMU,Kern::Printf("Mmu::Init2Common"));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   373
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   374
	// create allocator...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   375
	const SRamInfo& info = *(const SRamInfo*)TheSuperPage().iRamBootData;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   376
	iRamPageAllocator = DRamAllocator::New(info, iRamZones, iRamZoneCallback);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   377
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   378
	// initialise all pages in banks as unused...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   379
	const SRamBank* bank = info.iBanks;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   380
	while(bank->iSize)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   381
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   382
		TUint32 base = bank->iBase;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   383
		TUint32 size = bank->iSize;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   384
		__KTRACE_OPT2(KBOOT,KMMU,Kern::Printf("Found RAM bank 0x%08x size %d",base,size));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   385
		if(base+size<=base || ((base|size)&KPageMask))
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   386
			Panic(EInvalidRamBankAtBoot);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   387
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   388
		SPageInfo* pi = SPageInfo::FromPhysAddr(base);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   389
		SPageInfo* piEnd = pi+(size>>KPageShift);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   390
		while(pi<piEnd)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   391
			(pi++)->SetUnused();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   392
		++bank;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   393
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   394
	// step over the last bank to get to the reserved banks.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   395
	++bank;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   396
	// mark any reserved regions as allocated...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   397
	while(bank->iSize)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   398
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   399
		TUint32 base = bank->iBase;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   400
		TUint32 size = bank->iSize;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   401
		__KTRACE_OPT2(KBOOT,KMMU,Kern::Printf("Found reserved bank 0x%08x size %d",base,size));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   402
		if(base+size<=base || ((base|size)&KPageMask))
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   403
			Panic(EInvalidReservedBankAtBoot);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   404
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   405
		SPageInfo* pi = SPageInfo::FromPhysAddr(base);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   406
		SPageInfo* piEnd = pi+(size>>KPageShift);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   407
		while(pi<piEnd)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   408
			(pi++)->SetPhysAlloc();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   409
		++bank;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   410
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   411
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   412
	// Clear the inital (and only so far) page table info page so all unused
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   413
	// page tables infos will be marked as unused.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   414
	__ASSERT_COMPILE(SPageTableInfo::EUnused == 0);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   415
	memclr((TAny*)KPageTableInfoBase, KPageSize);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   416
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   417
	// look for page tables - assume first page table maps page tables
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   418
	TPte* pPte = (TPte*)KPageTableBase;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   419
	TInt i;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   420
	for(i=0; i<KChunkSize/KPageSize; ++i)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   421
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   422
		TPte pte = *pPte++;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   423
		if(pte==KPteUnallocatedEntry)	// after boot, page tables are contiguous
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   424
			break;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   425
		TPhysAddr ptpgPhys = Mmu::PtePhysAddr(pte,i);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   426
		__KTRACE_OPT(KBOOT,Kern::Printf("Page Table Group %08x -> Phys %08x", KPageTableBase+i*KPageSize, ptpgPhys));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   427
		SPageInfo* pi = SPageInfo::SafeFromPhysAddr(ptpgPhys);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   428
		__ASSERT_ALWAYS(pi, Panic(EInvalidPageTableAtBoot));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   429
		pi->SetFixed(i); // this also sets the SPageInfo::iOffset so that linear-to-physical works
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   430
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   431
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   432
	// look for mapped pages
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   433
	TPde* pd = Mmu::PageDirectory(KKernelOsAsid);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   434
	for(i=0; i<(1<<(32-KChunkShift)); ++i)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   435
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   436
		TPde pde = pd[i];
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   437
		if(pde==KPdeUnallocatedEntry)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   438
			continue;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   439
		TPhysAddr pdePhys = Mmu::PdePhysAddr(pde);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   440
		TPte* pt = 0;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   441
		if(pdePhys!=KPhysAddrInvalid)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   442
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   443
			__KTRACE_OPT(KBOOT,Kern::Printf("Addr %08x -> Whole PDE Phys %08x", i<<KChunkShift, pdePhys));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   444
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   445
		else
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   446
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   447
			pt = Mmu::PageTableFromPde(pde);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   448
			__KTRACE_OPT(KBOOT,Kern::Printf("Addr %08x -> page table %08x", i<<KChunkShift, pt));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   449
			__ASSERT_ALWAYS(pt,Panic(EInvalidPdeAtBoot)); // bad PDE
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   450
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   451
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   452
		TInt j;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   453
		TInt np = 0;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   454
		for(j=0; j<KChunkSize/KPageSize; ++j)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   455
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   456
			TBool present = ETrue;	// all pages present if whole PDE mapping
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   457
			TPte pte = 0;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   458
			if(pt)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   459
				{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   460
				pte = pt[j];
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   461
				present = pte!=KPteUnallocatedEntry;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   462
				}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   463
			if(present)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   464
				{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   465
				++np;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   466
				TPhysAddr pa = pt ? Mmu::PtePhysAddr(pte,j) : (pdePhys + (j<<KPageShift));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   467
				SPageInfo* pi = SPageInfo::SafeFromPhysAddr(pa);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   468
				__KTRACE_OPT(KBOOT,Kern::Printf("Addr: %08x PA=%08x",
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   469
													(i<<KChunkShift)+(j<<KPageShift), pa));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   470
				if(pi)	// ignore non-RAM mappings
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   471
					{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   472
					TInt r = iRamPageAllocator->MarkPageAllocated(pa, EPageFixed);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   473
					// allow KErrAlreadyExists since it's possible that a page is doubly mapped
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   474
					__ASSERT_ALWAYS(r==KErrNone || r==KErrAlreadyExists, Panic(EBadMappedPageAfterBoot));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   475
					if(pi->Type()==SPageInfo::EUnused)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   476
						pi->SetFixed();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   477
					}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   478
				}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   479
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   480
		__KTRACE_OPT(KBOOT,Kern::Printf("Addr: %08x #PTEs=%d",(i<<KChunkShift),np));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   481
		if(pt)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   482
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   483
			SPageTableInfo* pti = SPageTableInfo::FromPtPtr(pt);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   484
			pti->Boot(np);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   485
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   486
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   487
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   488
	TInt r = K::MutexCreate(iRamAllocatorMutex, KLitRamAlloc, NULL, EFalse, KMutexOrdRamAlloc);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   489
	if(r!=KErrNone)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   490
		Panic(ERamAllocMutexCreateFailed);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   491
	iRamAllocLockCount = 0;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   492
	iRamAllocInitialFreePages = FreeRamInPages();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   493
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   494
	__KTRACE_OPT2(KBOOT,KMMU,Kern::Printf("Mmu::DoInit2"));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   495
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   496
	for(i=0; i<KNumTempMappingSlots; ++i)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   497
		iTempMap[i].Alloc(1);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   498
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   499
	iPhysMemSyncTemp.Alloc(1);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   500
	r = K::MutexCreate(iPhysMemSyncMutex, KLitPhysMemSync, NULL, EFalse, KMutexOrdSyncPhysMem);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   501
	if(r!=KErrNone)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   502
		Panic(EPhysMemSyncMutexCreateFailed);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   503
//	VerifyRam();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   504
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   505
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   506
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   507
void Mmu::Init2FinalCommon()
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   508
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   509
	__KTRACE_OPT2(KBOOT,KMMU,Kern::Printf("Mmu::Init2FinalCommon"));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   510
	// hack, reduce free memory to <2GB...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   511
	while(FreeRamInPages()>=0x80000000/KPageSize)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   512
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   513
		TPhysAddr dummyPage;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   514
		TInt r = iRamPageAllocator->AllocRamPages(&dummyPage,1, EPageFixed);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   515
		__NK_ASSERT_ALWAYS(r==KErrNone);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   516
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   517
	// hack, reduce total RAM to <2GB...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   518
	if(TheSuperPage().iTotalRamSize<0)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   519
		TheSuperPage().iTotalRamSize = 0x80000000-KPageSize;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   520
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   521
	// Save current free RAM size - there can never be more free RAM than this
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   522
	TUint maxFreePages = FreeRamInPages();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   523
	K::MaxFreeRam = maxFreePages*KPageSize;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   524
	if(maxFreePages < (TUint(PP::RamDriveMaxSize)>>KPageShift))
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   525
		PP::RamDriveMaxSize = maxFreePages*KPageSize;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   526
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   527
	// update this to stop assert triggering in RamAllocLock::Lock()
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   528
	iRamAllocInitialFreePages = maxFreePages;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   529
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   530
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   531
 
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   532
void Mmu::Init3()
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   533
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   534
	iDefrag = new Defrag;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   535
	if (!iDefrag)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   536
		Panic(EDefragAllocFailed);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   537
	iDefrag->Init3(TheMmu.iRamPageAllocator);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   538
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   539
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   540
//
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   541
// Utils
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   542
//
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   543
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   544
void Mmu::Panic(TPanic aPanic)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   545
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   546
	Kern::Fault("MMU",aPanic);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   547
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   548
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   549
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   550
TUint Mmu::FreeRamInPages()
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   551
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   552
	return iRamPageAllocator->FreeRamInPages()+ThePager.NumberOfFreePages();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   553
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   554
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   555
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   556
TUint Mmu::TotalPhysicalRamPages()
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   557
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   558
	return iRamPageAllocator->TotalPhysicalRamPages();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   559
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   560
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   561
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   562
const SRamZone* Mmu::RamZoneConfig(TRamZoneCallback& aCallback) const
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   563
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   564
	aCallback = iRamZoneCallback;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   565
	return iRamZones;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   566
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   567
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   568
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   569
void Mmu::SetRamZoneConfig(const SRamZone* aZones, TRamZoneCallback aCallback)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   570
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   571
	iRamZones = aZones;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   572
	iRamZoneCallback = aCallback;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   573
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   574
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   575
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   576
TInt Mmu::ModifyRamZoneFlags(TUint aId, TUint aClearMask, TUint aSetMask)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   577
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   578
	return iRamPageAllocator->ModifyZoneFlags(aId, aClearMask, aSetMask);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   579
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   580
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   581
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   582
TInt Mmu::GetRamZonePageCount(TUint aId, SRamZonePageCount& aPageData)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   583
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   584
	return iRamPageAllocator->GetZonePageCount(aId, aPageData);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   585
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   586
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   587
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   588
TInt Mmu::ZoneAllocPhysicalRam(TUint* aZoneIdList, TUint aZoneIdCount, TInt aBytes, TPhysAddr& aPhysAddr, TInt aAlign)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   589
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   590
	__KTRACE_OPT(KMMU,Kern::Printf("Mmu::ZoneAllocPhysicalRam(?,%d,%d,?,%d)", aZoneIdCount, aBytes, aPhysAddr, aAlign));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   591
	__NK_ASSERT_DEBUG(RamAllocLock::IsHeld());
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   592
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   593
	TInt r = iRamPageAllocator->ZoneAllocContiguousRam(aZoneIdList, aZoneIdCount, aBytes, aPhysAddr, EPageFixed, aAlign);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   594
	if(r!=KErrNone)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   595
		iRamAllocFailed = ETrue;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   596
	else
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   597
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   598
		TUint pages = MM::RoundToPageCount(aBytes);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   599
		AllocatedPhysicalRam(aPhysAddr, pages,  (Mmu::TRamAllocFlags)EMemAttStronglyOrdered);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   600
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   601
	__KTRACE_OPT(KMMU,Kern::Printf("Mmu::ZoneAllocPhysicalRam returns %d and aPhysAddr=0x%08x",r,aPhysAddr));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   602
	return r;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   603
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   604
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   605
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   606
TInt Mmu::ZoneAllocPhysicalRam(TUint* aZoneIdList, TUint aZoneIdCount, TInt aNumPages, TPhysAddr* aPageList)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   607
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   608
	__KTRACE_OPT(KMMU,Kern::Printf("Mmu::ZoneAllocPhysicalRam(?,%d,%d,?)", aZoneIdCount, aNumPages));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   609
	__NK_ASSERT_DEBUG(RamAllocLock::IsHeld());
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   610
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   611
	TInt r = iRamPageAllocator->ZoneAllocRamPages(aZoneIdList, aZoneIdCount, aPageList, aNumPages, EPageFixed);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   612
	if(r!=KErrNone)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   613
		iRamAllocFailed = ETrue;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   614
	else
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   615
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   616
		PagesAllocated(aPageList, aNumPages, (Mmu::TRamAllocFlags)EMemAttStronglyOrdered);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   617
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   618
		// update page infos...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   619
		TUint flash = 0;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   620
		TPhysAddr* pageEnd = aPageList + aNumPages;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   621
		MmuLock::Lock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   622
		TPhysAddr* page = aPageList;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   623
		while (page < pageEnd)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   624
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   625
			MmuLock::Flash(flash,KMaxPageInfoUpdatesInOneGo/2);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   626
			TPhysAddr pagePhys = *page++;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   627
			__NK_ASSERT_DEBUG(pagePhys != KPhysAddrInvalid);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   628
			SPageInfo::FromPhysAddr(pagePhys)->SetPhysAlloc();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   629
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   630
		MmuLock::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   631
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   632
	__KTRACE_OPT(KMMU,Kern::Printf("Mmu::ZoneAllocPhysicalRam returns %d",r));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   633
	return r;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   634
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   635
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   636
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   637
TInt Mmu::RamHalFunction(TInt aFunction, TAny* a1, TAny* a2)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   638
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   639
	// This function should only be registered with hal and therefore can only 
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   640
	// be invoked after the ram allocator has been created.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   641
	__NK_ASSERT_DEBUG(iRamPageAllocator);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   642
	return iRamPageAllocator->HalFunction(aFunction, a1, a2);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   643
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   644
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   645
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   646
void Mmu::ChangePageType(SPageInfo* aPageInfo, TZonePageType aOldPageType, TZonePageType aNewPageType)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   647
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   648
	iRamPageAllocator->ChangePageType(aPageInfo, aOldPageType, aNewPageType);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   649
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   650
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   651
TInt Mmu::HandlePageFault(TLinAddr aPc, TLinAddr aFaultAddress, TUint aAccessPermissions, TAny* aExceptionInfo)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   652
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   653
	TRACE(("Mmu::HandlePageFault(0x%08x,0x%08x,%d)",aPc,aFaultAddress,aAccessPermissions));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   654
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   655
	DMemModelThread* thread = (DMemModelThread*)TheCurrentThread;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   656
	// Get the os asid of the process taking the fault, no need to open a reference 
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   657
	// as it is the current thread's process so can't be freed.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   658
	TUint faultOsAsid = ((DMemModelProcess*)thread->iNThread.iAddressSpace)->OsAsid();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   659
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   660
	// check if any fast mutexes held...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   661
	NFastMutex* fm = NKern::HeldFastMutex();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   662
	TPagingExcTrap* trap = thread->iPagingExcTrap;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   663
	if(fm)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   664
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   665
		// check there is an XTRAP_PAGING in effect...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   666
		if(!trap)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   667
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   668
			// oops, kill system...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   669
			__KTRACE_OPT2(KPAGING,KPANIC,Kern::Printf("Fault with FM Held! addr=0x%08x (%O pc=%x)",aFaultAddress,thread,aPc));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   670
			Exc::Fault(aExceptionInfo);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   671
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   672
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   673
		// release the fast mutex...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   674
		NKern::FMSignal(fm);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   675
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   676
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   677
	NKern::ThreadEnterCS();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   678
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   679
	// work out address space for aFaultAddress...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   680
	TUint osAsid = faultOsAsid;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   681
	TLinAddr addr = aFaultAddress;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   682
	if(thread->iAliasLinAddr && TUint(addr - thread->iAliasLinAddr) < TUint(KPageSize))
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   683
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   684
		// Address in aliased memory...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   685
		addr = (addr - thread->iAliasLinAddr) + thread->iAliasTarget;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   686
		// Get the os asid of the process thread is aliasing, no need to open 
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   687
		// a reference on it as one was already opened when the alias was created.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   688
		osAsid = thread->iAliasProcess->OsAsid();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   689
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   690
	else if(addr>=KGlobalMemoryBase)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   691
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   692
		// Address in global region, so look it up in kernel's address space...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   693
		osAsid = KKernelOsAsid;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   694
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   695
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   696
	// NOTE, osAsid will remain valid for duration of this function because it is either
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   697
	// - The current thread's address space, which can't go away whilst the thread
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   698
	//   is running.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   699
	// - The address space of another thread which we are aliasing memory from,
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   700
	//   and we would only do this if we have a reference on this other thread,
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   701
	//   which has a reference on it's process, which should own the address space!
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   702
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   703
#ifdef __BROADCAST_CACHE_MAINTENANCE__
45
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
   704
	TInt aliasAsid = -1;
43
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   705
	if (thread->iAliasLinAddr)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   706
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   707
		// If an alias is in effect, the the thread will be locked to the current CPU,
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   708
		// but we need to be able to migrate between CPUs for cache maintainance.  This
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   709
		// must be dealt with by removing the alias and restoring it with a paging trap
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   710
		// handler.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   711
		if(!trap)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   712
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   713
			// oops, kill system...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   714
			__KTRACE_OPT2(KPAGING,KPANIC,Kern::Printf("Fault with thread locked to current CPU! addr=0x%08x (%O pc=%x)",aFaultAddress,thread,aPc));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   715
			Exc::Fault(aExceptionInfo);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   716
			}
45
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
   717
		// Open a reference on the aliased process's os asid before removing the alias
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
   718
		// so that the address space can't be freed while we try to access its members.
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
   719
		aliasAsid = thread->iAliasProcess->TryOpenOsAsid();
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
   720
		// This should never fail as until we remove the alias there will 
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
   721
		// always be at least one reference on the os asid.
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
   722
		__NK_ASSERT_DEBUG(aliasAsid >= 0);
43
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   723
		thread->RemoveAlias();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   724
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   725
#endif
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   726
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   727
	// find mapping...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   728
	TUint offsetInMapping;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   729
	TUint mapInstanceCount;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   730
	DMemoryMapping* mapping = MM::FindMappingInAddressSpace(osAsid, addr, 1, offsetInMapping, mapInstanceCount);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   731
//	TRACE(("%O mapping=0x%08x",TheCurrentThread,mapping));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   732
	TInt r = KErrNotFound;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   733
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   734
	if(mapping)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   735
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   736
		MmuLock::Lock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   737
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   738
		// check if we need to process page fault...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   739
		if(!Mmu::CheckPteTypePermissions(mapping->PteType(),aAccessPermissions) ||
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   740
			mapInstanceCount != mapping->MapInstanceCount())
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   741
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   742
			// Invalid access to the page.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   743
			MmuLock::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   744
			r = KErrAbort;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   745
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   746
		else
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   747
			{
47
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
   748
			// Should not be able to take a fault on a pinned mapping if accessing it 
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
   749
			// with the correct permissions.
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
   750
			__NK_ASSERT_DEBUG(!mapping->IsPinned());
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
   751
43
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   752
			// we do need to handle fault so is this a demand paging or page moving fault
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   753
			DMemoryObject* memory = mapping->Memory();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   754
			if(!memory)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   755
				MmuLock::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   756
			else
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   757
				{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   758
				TUint faultIndex = (offsetInMapping >> KPageShift) + mapping->iStartIndex;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   759
				memory->Open();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   760
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   761
				// This is safe as we have the instance count so can detect the mapping 
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   762
				// being reused and we have a reference to the memory object so it can't 
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   763
				// be deleted.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   764
				MmuLock::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   765
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   766
				if(memory->IsDemandPaged())
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   767
					{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   768
					// Let the pager handle the fault...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   769
					r = ThePager.HandlePageFault(	aPc, aFaultAddress, faultOsAsid, faultIndex,
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   770
													aAccessPermissions, memory, mapping, mapInstanceCount,
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   771
													thread, aExceptionInfo);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   772
					}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   773
				else
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   774
					{// The page could be being moved so verify that with its manager.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   775
					DMemoryManager* manager = memory->iManager;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   776
					r = manager->HandleFault(memory, faultIndex, mapping, mapInstanceCount, aAccessPermissions);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   777
					}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   778
				if (r == KErrNone)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   779
					{// alias PDE needs updating because page tables have changed...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   780
					thread->RefreshAlias();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   781
					}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   782
				memory->Close();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   783
				}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   784
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   785
		mapping->Close();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   786
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   787
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   788
	if (trap)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   789
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   790
		// restore address space (because the trap will bypass any code
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   791
		// which would have done this.)...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   792
		DMemModelThread::RestoreAddressSpace();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   793
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   794
45
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
   795
#ifdef __BROADCAST_CACHE_MAINTENANCE__
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
   796
	// Close any reference on the aliased process's os asid before we leave the
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
   797
	// critical section.
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
   798
	if (aliasAsid >= 0)
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
   799
		{
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
   800
		thread->iAliasProcess->CloseOsAsid();
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
   801
		}
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
   802
#endif
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
   803
43
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   804
	NKern::ThreadLeaveCS();  // thread will die now if CheckRealtimeThreadFault caused a panic
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   805
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   806
	// deal with XTRAP_PAGING...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   807
	if(trap)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   808
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   809
		// re-acquire any fast mutex which was held before the page fault...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   810
		if(fm)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   811
			NKern::FMWait(fm);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   812
		if (r == KErrNone)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   813
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   814
			trap->Exception(1); // return from exception trap with result '1' (value>0)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   815
			// code doesn't continue beyond this point.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   816
			__NK_ASSERT_DEBUG(0);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   817
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   818
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   819
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   820
	return r;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   821
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   822
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   823
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   824
//
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   825
// Memory allocation
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   826
//
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   827
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   828
TInt Mmu::AllocRam(	TPhysAddr* aPages, TUint aCount, TRamAllocFlags aFlags, TZonePageType aZonePageType, 
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   829
					TUint aBlockZoneId, TBool aBlockRest)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   830
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   831
	__KTRACE_OPT(KMMU,Kern::Printf("Mmu::AllocRam(?,%d,%x)",aCount,aFlags));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   832
	__NK_ASSERT_DEBUG(RamAllocLock::IsHeld());
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   833
#ifdef _DEBUG
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   834
	if(K::CheckForSimulatedAllocFail())
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   835
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   836
		__KTRACE_OPT(KMMU,Kern::Printf("Mmu::AllocRam returns simulated OOM %d",KErrNoMemory));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   837
		return KErrNoMemory;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   838
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   839
#endif
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   840
	TInt missing = iRamPageAllocator->AllocRamPages(aPages, aCount, aZonePageType, aBlockZoneId, aBlockRest);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   841
	if(missing && !(aFlags&EAllocNoPagerReclaim) && ThePager.GetFreePages(missing))
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   842
		missing = iRamPageAllocator->AllocRamPages(aPages, aCount, aZonePageType, aBlockZoneId, aBlockRest);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   843
	TInt r = missing ? KErrNoMemory : KErrNone;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   844
	if(r!=KErrNone)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   845
		iRamAllocFailed = ETrue;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   846
	else
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   847
		PagesAllocated(aPages,aCount,aFlags);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   848
	__KTRACE_OPT(KMMU,Kern::Printf("Mmu::AllocRam returns %d",r));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   849
	return r;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   850
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   851
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   852
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   853
void Mmu::FreeRam(TPhysAddr* aPages, TUint aCount, TZonePageType aZonePageType)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   854
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   855
	__KTRACE_OPT(KMMU,Kern::Printf("Mmu::FreeRam(?,%d)",aCount));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   856
	__NK_ASSERT_DEBUG(RamAllocLock::IsHeld());
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   857
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   858
	// update page infos...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   859
	TPhysAddr* pages = aPages;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   860
	TPhysAddr* pagesEnd = pages+aCount;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   861
	TPhysAddr* pagesOut = aPages;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   862
	MmuLock::Lock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   863
	TUint flash = 0;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   864
	while(pages<pagesEnd)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   865
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   866
		MmuLock::Flash(flash,KMaxPageInfoUpdatesInOneGo/2);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   867
		TPhysAddr pagePhys = *pages++;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   868
		__NK_ASSERT_DEBUG(pagePhys!=KPhysAddrInvalid);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   869
		SPageInfo* pi = SPageInfo::FromPhysAddr(pagePhys);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   870
		PageFreed(pi);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   871
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   872
		// If this is an old page of a page being moved that was previously pinned
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   873
		// then make sure it is freed as discardable otherwise despite DPager::DonatePages()
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   874
		// having marked it as discardable it would be freed as movable.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   875
		__NK_ASSERT_DEBUG(pi->PagedState() != SPageInfo::EPagedPinnedMoved || aCount == 1);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   876
		if (pi->PagedState() == SPageInfo::EPagedPinnedMoved)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   877
			aZonePageType = EPageDiscard;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   878
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   879
		if(ThePager.PageFreed(pi)==KErrNone)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   880
			--aCount; // pager has dealt with this page, so one less for us
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   881
		else
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   882
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   883
			// All paged pages should have been dealt with by the pager above.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   884
			__NK_ASSERT_DEBUG(pi->PagedState() == SPageInfo::EUnpaged);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   885
			*pagesOut++ = pagePhys; // store page address for freeing later
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   886
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   887
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   888
	MmuLock::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   889
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   890
	iRamPageAllocator->FreeRamPages(aPages, aCount, aZonePageType);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   891
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   892
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   893
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   894
TInt Mmu::AllocContiguousRam(TPhysAddr& aPhysAddr, TUint aCount, TUint aAlign, TRamAllocFlags aFlags)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   895
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   896
	__KTRACE_OPT(KMMU,Kern::Printf("Mmu::AllocContiguousRam(?,0x%x,%d,%x)",aCount,aAlign,aFlags));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   897
	__NK_ASSERT_DEBUG(RamAllocLock::IsHeld());
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   898
#ifdef _DEBUG
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   899
	if(K::CheckForSimulatedAllocFail())
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   900
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   901
		__KTRACE_OPT(KMMU,Kern::Printf("Mmu::AllocContiguousRam returns simulated OOM %d",KErrNoMemory));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   902
		return KErrNoMemory;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   903
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   904
	// Only the page sets EAllocNoPagerReclaim and it shouldn't allocate contiguous ram.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   905
	__NK_ASSERT_DEBUG(!(aFlags&EAllocNoPagerReclaim));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   906
#endif
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   907
	TInt r = iRamPageAllocator->AllocContiguousRam(aCount, aPhysAddr, EPageFixed, aAlign+KPageShift);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   908
	if(r==KErrNoMemory && aCount > KMaxFreeableContiguousPages)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   909
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   910
		// flush paging cache and retry...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   911
		ThePager.FlushAll();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   912
		r = iRamPageAllocator->AllocContiguousRam(aCount, aPhysAddr, EPageFixed, aAlign+KPageShift);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   913
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   914
	if(r!=KErrNone)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   915
		iRamAllocFailed = ETrue;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   916
	else
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   917
		PagesAllocated((TPhysAddr*)(aPhysAddr|1), aCount, aFlags);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   918
	__KTRACE_OPT(KMMU,Kern::Printf("AllocContiguouseRam returns %d and aPhysAddr=0x%08x",r,aPhysAddr));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   919
	return r;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   920
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   921
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   922
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   923
void Mmu::FreeContiguousRam(TPhysAddr aPhysAddr, TUint aCount)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   924
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   925
	__KTRACE_OPT(KMMU,Kern::Printf("Mmu::FreeContiguousRam(0x%08x,0x%x)",aPhysAddr,aCount));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   926
	__NK_ASSERT_DEBUG(RamAllocLock::IsHeld());
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   927
	__NK_ASSERT_DEBUG((aPhysAddr&KPageMask)==0);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   928
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   929
	TUint pageCount = aCount;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   930
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   931
	// update page infos...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   932
	SPageInfo* pi = SPageInfo::FromPhysAddr(aPhysAddr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   933
	SPageInfo* piEnd = pi+pageCount;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   934
	TUint flash = 0;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   935
	MmuLock::Lock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   936
	while(pi<piEnd)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   937
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   938
		MmuLock::Flash(flash,KMaxPageInfoUpdatesInOneGo);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   939
		PageFreed(pi++);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   940
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   941
	MmuLock::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   942
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   943
	// free pages...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   944
	while(pageCount)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   945
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   946
		iRamPageAllocator->FreeRamPage(aPhysAddr, EPageFixed);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   947
		aPhysAddr += KPageSize;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   948
		--pageCount;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   949
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   950
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   951
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   952
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   953
TInt Mmu::AllocPhysicalRam(TPhysAddr* aPages, TUint aCount, TRamAllocFlags aFlags)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   954
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   955
	__KTRACE_OPT(KMMU,Kern::Printf("Mmu::AllocPhysicalRam(?,%d,%x)",aCount,aFlags));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   956
	__NK_ASSERT_DEBUG(RamAllocLock::IsHeld());
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   957
	// Allocate fixed pages as physically allocated pages aren't movable or discardable.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   958
	TInt r = AllocRam(aPages, aCount, aFlags, EPageFixed);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   959
	if (r!=KErrNone)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   960
		return r;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   961
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   962
	// update page infos...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   963
	TPhysAddr* pages = aPages;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   964
	TPhysAddr* pagesEnd = pages+aCount;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   965
	MmuLock::Lock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   966
	TUint flash = 0;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   967
	while(pages<pagesEnd)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   968
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   969
		MmuLock::Flash(flash,KMaxPageInfoUpdatesInOneGo/2);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   970
		TPhysAddr pagePhys = *pages++;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   971
		__NK_ASSERT_DEBUG(pagePhys!=KPhysAddrInvalid);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   972
		SPageInfo* pi = SPageInfo::FromPhysAddr(pagePhys);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   973
		pi->SetPhysAlloc();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   974
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   975
	MmuLock::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   976
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   977
	return KErrNone;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   978
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   979
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   980
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   981
void Mmu::FreePhysicalRam(TPhysAddr* aPages, TUint aCount)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   982
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   983
	__KTRACE_OPT(KMMU,Kern::Printf("Mmu::FreePhysicalRam(?,%d)",aCount));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   984
	__NK_ASSERT_DEBUG(RamAllocLock::IsHeld());
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   985
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   986
	// update page infos...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   987
	TPhysAddr* pages = aPages;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   988
	TPhysAddr* pagesEnd = pages+aCount;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   989
	MmuLock::Lock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   990
	TUint flash = 0;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   991
	while(pages<pagesEnd)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   992
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   993
		MmuLock::Flash(flash,KMaxPageInfoUpdatesInOneGo/2);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   994
		TPhysAddr pagePhys = *pages++;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   995
		__NK_ASSERT_DEBUG(pagePhys!=KPhysAddrInvalid);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   996
		SPageInfo* pi = SPageInfo::FromPhysAddr(pagePhys);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   997
		__ASSERT_ALWAYS(pi->Type()==SPageInfo::EPhysAlloc, Panic(EBadFreePhysicalRam));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   998
		__ASSERT_ALWAYS(!pi->UseCount(), Panic(EBadFreePhysicalRam));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   999
		pi->SetUnused();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1000
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1001
	MmuLock::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1002
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1003
	iRamPageAllocator->FreeRamPages(aPages,aCount, EPageFixed);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1004
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1005
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1006
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1007
TInt Mmu::AllocPhysicalRam(TPhysAddr& aPhysAddr, TUint aCount, TUint aAlign, TRamAllocFlags aFlags)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1008
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1009
	__KTRACE_OPT(KMMU,Kern::Printf("Mmu::AllocPhysicalRam(?,0x%x,d,%x)",aCount,aAlign,aFlags));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1010
	TInt r = AllocContiguousRam(aPhysAddr,aCount,aAlign,aFlags);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1011
	if (r!=KErrNone)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1012
		return r;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1013
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1014
	// update page infos...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1015
	SPageInfo* pi = SPageInfo::FromPhysAddr(aPhysAddr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1016
	SPageInfo* piEnd = pi+aCount;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1017
	TUint flash = 0;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1018
	MmuLock::Lock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1019
	while(pi<piEnd)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1020
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1021
		MmuLock::Flash(flash,KMaxPageInfoUpdatesInOneGo);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1022
		pi->SetPhysAlloc();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1023
		++pi;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1024
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1025
	MmuLock::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1026
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1027
	return KErrNone;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1028
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1029
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1030
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1031
void Mmu::FreePhysicalRam(TPhysAddr aPhysAddr, TUint aCount)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1032
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1033
	__KTRACE_OPT(KMMU,Kern::Printf("Mmu::FreePhysicalRam(0x%08x,0x%x)",aPhysAddr,aCount));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1034
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1035
	// update page infos...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1036
	SPageInfo* pi = SPageInfo::FromPhysAddr(aPhysAddr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1037
	SPageInfo* piEnd = pi+aCount;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1038
	TUint flash = 0;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1039
	MmuLock::Lock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1040
	while(pi<piEnd)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1041
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1042
		MmuLock::Flash(flash,KMaxPageInfoUpdatesInOneGo);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1043
		__ASSERT_ALWAYS(pi->Type()==SPageInfo::EPhysAlloc, Panic(EBadFreePhysicalRam));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1044
		__ASSERT_ALWAYS(!pi->UseCount(), Panic(EBadFreePhysicalRam));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1045
		pi->SetUnused();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1046
		++pi;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1047
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1048
	MmuLock::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1049
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1050
	iRamPageAllocator->FreePhysicalRam(aPhysAddr, aCount << KPageShift);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1051
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1052
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1053
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1054
TInt Mmu::ClaimPhysicalRam(TPhysAddr aPhysAddr, TUint aCount, TRamAllocFlags aFlags)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1055
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1056
	__KTRACE_OPT(KMMU,Kern::Printf("Mmu::ClaimPhysicalRam(0x%08x,0x%x,0x%08x)",aPhysAddr,aCount,aFlags));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1057
	aPhysAddr &= ~KPageMask;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1058
	TInt r = iRamPageAllocator->ClaimPhysicalRam(aPhysAddr,(aCount << KPageShift));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1059
	if(r!=KErrNone)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1060
		return r;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1061
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1062
	PagesAllocated((TPhysAddr*)(aPhysAddr|1), aCount, aFlags);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1063
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1064
	// update page infos...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1065
	SPageInfo* pi = SPageInfo::FromPhysAddr(aPhysAddr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1066
	SPageInfo* piEnd = pi+aCount;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1067
	TUint flash = 0;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1068
	MmuLock::Lock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1069
	while(pi<piEnd)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1070
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1071
		MmuLock::Flash(flash,KMaxPageInfoUpdatesInOneGo);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1072
		pi->SetPhysAlloc();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1073
		++pi;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1074
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1075
	MmuLock::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1076
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1077
	return KErrNone;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1078
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1079
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1080
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1081
void Mmu::AllocatedPhysicalRam(TPhysAddr aPhysAddr, TUint aCount, TRamAllocFlags aFlags)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1082
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1083
	__KTRACE_OPT(KMMU,Kern::Printf("Mmu::AllocatedPhysicalRam(0x%08x,0x%x,d,%x)",aPhysAddr,aCount,aFlags));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1084
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1085
	PagesAllocated((TPhysAddr*)(aPhysAddr|1), aCount, aFlags);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1086
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1087
	// update page infos...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1088
	SPageInfo* pi = SPageInfo::FromPhysAddr(aPhysAddr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1089
	SPageInfo* piEnd = pi+aCount;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1090
	TUint flash = 0;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1091
	MmuLock::Lock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1092
	while(pi<piEnd)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1093
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1094
		MmuLock::Flash(flash,KMaxPageInfoUpdatesInOneGo);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1095
		pi->SetPhysAlloc();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1096
		++pi;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1097
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1098
	MmuLock::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1099
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1100
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1101
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1102
//
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1103
// Misc
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1104
//
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1105
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1106
#ifdef _DEBUG
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1107
/**
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1108
Perform a page table walk to return the physical address of
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1109
the memory mapped at virtual address \a aLinAddr in the
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1110
address space \a aOsAsid.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1111
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1112
If the page table used was not one allocated by the kernel
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1113
then the results are unpredictable and may cause a system fault.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1114
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1115
@pre #MmuLock held.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1116
*/
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1117
TPhysAddr Mmu::LinearToPhysical(TLinAddr aLinAddr, TInt aOsAsid)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1118
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1119
	__NK_ASSERT_DEBUG(MmuLock::IsHeld() || K::Initialising);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1120
	return UncheckedLinearToPhysical(aLinAddr,aOsAsid);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1121
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1122
#endif
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1123
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1124
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1125
/**
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1126
Next virtual address available for allocation by TTempMapping.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1127
This is initialised to #KTempAddr and addresses may be allocated
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1128
until they reach #KTempAddrEnd.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1129
*/
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1130
TLinAddr Mmu::TTempMapping::iNextLinAddr = KTempAddr;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1131
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1132
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1133
/**
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1134
Allocate virtual address space required to map a given number of memory pages.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1135
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1136
The actual size of allocated virtual allocated needs to accommodate \a aNumPages
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1137
number of pages of any colour. For example: if \a aNumPages == 4 and #KPageColourCount == 4,
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1138
then at least 7 pages are required. 
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1139
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1140
@param aNumPages	Maximum number of pages that can be mapped into this temporary mapping.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1141
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1142
@pre Called in single threaded content (boot) only.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1143
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1144
@pre #iNextLinAddr points to virtual page with zero colour.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1145
@post #iNextLinAddr points to virtual page with zero colour.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1146
*/
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1147
void Mmu::TTempMapping::Alloc(TUint aNumPages)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1148
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1149
	__NK_ASSERT_DEBUG(aNumPages<=(KTempAddrEnd-KTempAddr)/KPageSize);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1150
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1151
	// This runs during the boot only (single threaded context) so the access to iNextLinAddr is not guarded by any mutex.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1152
	TLinAddr tempAddr = iNextLinAddr;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1153
	TUint numPages = (KPageColourMask+aNumPages+KPageColourMask)&~KPageColourMask;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1154
	iNextLinAddr = tempAddr+numPages*KPageSize;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1155
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1156
	__NK_ASSERT_ALWAYS(iNextLinAddr<=KTempAddrEnd);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1157
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1158
	__NK_ASSERT_DEBUG(iSize==0);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1159
	iLinAddr = tempAddr;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1160
	MmuLock::Lock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1161
	iPtePtr = Mmu::PtePtrFromLinAddr(tempAddr,KKernelOsAsid);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1162
	__NK_ASSERT_DEBUG(iPtePtr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1163
	MmuLock::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1164
	iBlankPte = TheMmu.iTempPteCached;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1165
	iSize = aNumPages;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1166
	iCount = 0;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1167
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1168
	TRACEB(("Mmu::TTempMapping::Alloc(%d) iLinAddr=0x%08x, iPtePtr=0x%08x",aNumPages,iLinAddr,iPtePtr));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1169
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1170
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1171
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1172
/**
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1173
Map a single physical page into this temporary mapping.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1174
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1175
Supervisor read/write access and EMemoryAttributeStandard memory attributes apply.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1176
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1177
@param aPage		The physical page to map.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1178
@param aColour 		The required colour for the mapping.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1179
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1180
@return 			The linear address at which the page is mapped.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1181
*/
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1182
TLinAddr Mmu::TTempMapping::Map(TPhysAddr aPage, TUint aColour)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1183
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1184
	__NK_ASSERT_DEBUG(iSize>=1);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1185
	__NK_ASSERT_DEBUG(iCount==0);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1186
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1187
	TUint colour = aColour&KPageColourMask;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1188
	TLinAddr addr = iLinAddr+(colour<<KPageShift);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1189
	TPte* pPte = iPtePtr+colour;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1190
	iColour = colour;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1191
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1192
	__ASSERT_DEBUG(*pPte==KPteUnallocatedEntry,MM::Panic(MM::ETempMappingAlreadyInUse));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1193
	*pPte = (aPage&~KPageMask) | iBlankPte;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1194
	CacheMaintenance::SinglePteUpdated((TLinAddr)pPte);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1195
	InvalidateTLBForPage(addr|KKernelOsAsid);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1196
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1197
	iCount = 1;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1198
	return addr;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1199
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1200
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1201
/**
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1202
Map a single physical page into this temporary mapping using the given page table entry (PTE) value.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1203
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1204
@param aPage		The physical page to map.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1205
@param aColour 		The required colour for the mapping.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1206
@param aBlankPte	The PTE value to use for mapping the page,
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1207
					with the physical address component equal to zero.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1208
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1209
@return 			The linear address at which the page is mapped.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1210
*/
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1211
TLinAddr Mmu::TTempMapping::Map(TPhysAddr aPage, TUint aColour, TPte aBlankPte)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1212
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1213
	__NK_ASSERT_DEBUG(iSize>=1);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1214
	__NK_ASSERT_DEBUG(iCount==0);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1215
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1216
	TUint colour = aColour&KPageColourMask;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1217
	TLinAddr addr = iLinAddr+(colour<<KPageShift);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1218
	TPte* pPte = iPtePtr+colour;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1219
	iColour = colour;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1220
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1221
	__ASSERT_DEBUG(*pPte==KPteUnallocatedEntry,MM::Panic(MM::ETempMappingAlreadyInUse));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1222
	*pPte = (aPage&~KPageMask) | aBlankPte;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1223
	CacheMaintenance::SinglePteUpdated((TLinAddr)pPte);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1224
	InvalidateTLBForPage(addr|KKernelOsAsid);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1225
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1226
	iCount = 1;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1227
	return addr;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1228
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1229
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1230
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1231
/**
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1232
Map a number of physical pages into this temporary mapping.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1233
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1234
Supervisor read/write access and EMemoryAttributeStandard memory attributes apply.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1235
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1236
@param aPages		The array of physical pages to map.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1237
@param aCount		The number of pages to map.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1238
@param aColour 		The required colour for the first page.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1239
					Consecutive pages will be coloured accordingly.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1240
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1241
@return 			The linear address at which the first page is mapped.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1242
*/
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1243
TLinAddr Mmu::TTempMapping::Map(TPhysAddr* aPages, TUint aCount, TUint aColour)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1244
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1245
	__NK_ASSERT_DEBUG(iSize>=aCount);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1246
	__NK_ASSERT_DEBUG(iCount==0);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1247
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1248
	TUint colour = aColour&KPageColourMask;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1249
	TLinAddr addr = iLinAddr+(colour<<KPageShift);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1250
	TPte* pPte = iPtePtr+colour;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1251
	iColour = colour;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1252
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1253
	for(TUint i=0; i<aCount; ++i)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1254
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1255
		__ASSERT_DEBUG(pPte[i]==KPteUnallocatedEntry,MM::Panic(MM::ETempMappingAlreadyInUse));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1256
		pPte[i] = (aPages[i]&~KPageMask) | iBlankPte;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1257
		CacheMaintenance::SinglePteUpdated((TLinAddr)&pPte[i]);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1258
		InvalidateTLBForPage((addr+i*KPageSize)|KKernelOsAsid);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1259
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1260
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1261
	iCount = aCount;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1262
	return addr;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1263
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1264
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1265
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1266
/**
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1267
Unmap all pages from this temporary mapping.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1268
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1269
@param aIMBRequired	True if IMB barrier is required prior unmapping.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1270
*/
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1271
void Mmu::TTempMapping::Unmap(TBool aIMBRequired)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1272
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1273
	__NK_ASSERT_DEBUG(iSize>=1);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1274
	if(aIMBRequired)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1275
		CacheMaintenance::CodeChanged(iLinAddr+iColour*KPageSize,iCount*KPageSize);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1276
	Unmap();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1277
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1278
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1279
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1280
/**
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1281
Unmap all pages from this temporary mapping.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1282
*/
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1283
void Mmu::TTempMapping::Unmap()
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1284
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1285
	__NK_ASSERT_DEBUG(iSize>=1);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1286
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1287
	TUint colour = iColour;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1288
	TLinAddr addr = iLinAddr+(colour<<KPageShift);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1289
	TPte* pPte = iPtePtr+colour;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1290
	TUint count = iCount;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1291
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1292
	while(count)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1293
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1294
		*pPte = KPteUnallocatedEntry;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1295
		CacheMaintenance::SinglePteUpdated((TLinAddr)pPte);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1296
		InvalidateTLBForPage(addr|KKernelOsAsid);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1297
		addr += KPageSize;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1298
		++pPte;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1299
		--count;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1300
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1301
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1302
	iCount = 0;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1303
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1304
45
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1305
#ifdef __SMP__
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1306
/**
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1307
Dummy IPI to be invoked when a thread's alias pde members are updated remotely
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1308
by another thread.
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1309
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1310
@internalComponent
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1311
*/
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1312
class TAliasIPI : public TGenericIPI
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1313
	{
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1314
public:
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1315
	static void RefreshIsr(TGenericIPI*);
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1316
	void RefreshAlias();
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1317
	};
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1318
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1319
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1320
/**
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1321
Dummy isr method.
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1322
*/
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1323
void TAliasIPI::RefreshIsr(TGenericIPI*)
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1324
	{
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1325
	TRACE2(("TAliasIPI"));
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1326
	}
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1327
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1328
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1329
/**
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1330
Queue the dummy IPI on all other processors.  This ensures that DoProcessSwitch will
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1331
have completed updating iAliasPdePtr once this method returns.
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1332
*/
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1333
void TAliasIPI::RefreshAlias()
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1334
	{
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1335
	NKern::Lock();
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1336
	QueueAllOther(&RefreshIsr);
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1337
	NKern::Unlock();
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1338
	WaitCompletion();
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1339
	}
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1340
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1341
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1342
/** 
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1343
Perform a dummy ipi on all the other processors to ensure if any of them are 
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1344
executing DoProcessSwitch they will see the new value of iAliasPde before they 
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1345
update iAliasPdePtr or will finish updating iAliasPdePtr before we continue.  
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1346
This works as DoProcessSwitch() has interrupts disabled while reading iAliasPde 
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1347
and updating iAliasPdePtr.
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1348
*/
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1349
void BroadcastAliasRefresh()
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1350
	{
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1351
	TAliasIPI ipi;
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1352
	ipi.RefreshAlias();
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1353
	}
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1354
#endif //__SMP__
43
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1355
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1356
/**
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1357
Remove any thread IPC aliases which use the specified page table.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1358
This is used by the page table allocator when a page table is freed.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1359
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1360
@pre #PageTablesLockIsHeld
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1361
*/
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1362
void Mmu::RemoveAliasesForPageTable(TPhysAddr aPageTable)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1363
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1364
	__NK_ASSERT_DEBUG(PageTablesLockIsHeld());
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1365
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1366
	MmuLock::Lock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1367
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1368
	SDblQue checkedList;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1369
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1370
	TUint ptId = aPageTable>>KPageTableShift;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1371
	while(!iAliasList.IsEmpty())
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1372
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1373
		SDblQueLink* next = iAliasList.First()->Deque();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1374
		checkedList.Add(next);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1375
		DMemModelThread* thread = (DMemModelThread*)((TInt)next-_FOFF(DMemModelThread,iAliasLink));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1376
		if((thread->iAliasPde>>KPageTableShift)==ptId)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1377
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1378
			// the page table is being aliased by the thread, so remove it...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1379
			TRACE2(("Thread %O RemoveAliasesForPageTable", this));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1380
			thread->iAliasPde = KPdeUnallocatedEntry;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1381
#ifdef __SMP__ // we need to also unmap the page table in case thread is running on another core...
45
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1382
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1383
			// Ensure other processors see the update to iAliasPde.
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1384
			BroadcastAliasRefresh();
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1385
43
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1386
			*thread->iAliasPdePtr = KPdeUnallocatedEntry;
45
329ab0095843 Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 43
diff changeset
  1387
43
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1388
			SinglePdeUpdated(thread->iAliasPdePtr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1389
			__NK_ASSERT_DEBUG((thread->iAliasLinAddr&KPageMask)==0);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1390
			// Invalidate the tlb for the page using os asid of the process that created the alias
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1391
			// this is safe as the os asid will be valid as thread must be running otherwise the alias
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1392
			// would have been removed.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1393
			InvalidateTLBForPage(thread->iAliasLinAddr | ((DMemModelProcess*)thread->iOwningProcess)->OsAsid());
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1394
			// note, race condition with 'thread' updating its iAliasLinAddr is
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1395
			// not a problem because 'thread' will not the be accessing the aliased
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1396
			// region and will take care of invalidating the TLB.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1397
#endif
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1398
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1399
		MmuLock::Flash();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1400
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1401
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1402
	// copy checkedList back to iAliasList
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1403
	iAliasList.MoveFrom(&checkedList);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1404
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1405
	MmuLock::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1406
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1407
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1408
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1409
void DMemModelThread::RefreshAlias()
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1410
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1411
	if(iAliasLinAddr)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1412
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1413
		TRACE2(("Thread %O RefreshAlias", this));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1414
		// Get the os asid, this is the current thread so no need to open a reference.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1415
		TUint thisAsid = ((DMemModelProcess*)iOwningProcess)->OsAsid();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1416
		MmuLock::Lock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1417
		TInt osAsid = iAliasProcess->OsAsid();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1418
		TPde pde = *Mmu::PageDirectoryEntry(osAsid,iAliasTarget);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1419
		iAliasPde = pde;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1420
		*iAliasPdePtr = pde;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1421
		SinglePdeUpdated(iAliasPdePtr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1422
		InvalidateTLBForPage(iAliasLinAddr|thisAsid);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1423
		MmuLock::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1424
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1425
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1426
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1427
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1428
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1429
//
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1430
// Mapping/unmapping functions
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1431
//
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1432
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1433
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1434
/**
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1435
Modify page table entries (PTEs) so they map the given memory pages.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1436
Entries are only updated if the current state of the corresponding page
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1437
is RPageArray::ECommitted.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1438
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1439
@param aPtePtr		Pointer into a page table for the PTE of the first page.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1440
@param aCount		The number of pages to modify.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1441
@param aPages		Pointer to the entry for the first page in a memory object's #RPageArray.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1442
					Each entry contains the physical address of a page together with its
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1443
					current state (RPageArray::TState).
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1444
@param aBlankPte	The value to use for each PTE, with the physical address component equal
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1445
					to zero.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1446
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1447
@return False, if the page table no longer maps any entries and may be freed.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1448
		True otherwise, to indicate that the page table is still needed.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1449
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1450
@pre #MmuLock held.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1451
@post #MmuLock held and has not been released by this function.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1452
*/
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1453
TBool Mmu::MapPages(TPte* const aPtePtr, const TUint aCount, TPhysAddr* aPages, TPte aBlankPte)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1454
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1455
	__NK_ASSERT_DEBUG(MmuLock::IsHeld());
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1456
	__NK_ASSERT_DEBUG(aCount);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1457
 	__NK_ASSERT_DEBUG(aBlankPte!=KPteUnallocatedEntry);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1458
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1459
	TUint count = 0;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1460
	if(aCount==1)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1461
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1462
		// get page to map...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1463
		TPhysAddr pagePhys = *aPages;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1464
		TPte pte = *aPtePtr;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1465
		if(!RPageArray::TargetStateIsCommitted(pagePhys))
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1466
			goto done; // page no longer needs mapping
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1467
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1468
		// clear type flags...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1469
		pagePhys &= ~KPageMask;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1470
	
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1471
		// check nobody has already mapped the page...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1472
		if(pte!=KPteUnallocatedEntry)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1473
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1474
			// already mapped...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1475
#ifdef _DEBUG
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1476
			if((pte^pagePhys)>=TPte(KPageSize))
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1477
				{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1478
				// but different!
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1479
				Kern::Printf("Mmu::MapPages already mapped %x->%x",pagePhys,pte);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1480
				__NK_ASSERT_DEBUG(0);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1481
				}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1482
#endif
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1483
			return true; // return true to keep page table (it already had at least page mapped)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1484
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1485
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1486
		// map page...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1487
		pte = pagePhys|aBlankPte;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1488
		TRACE2(("!PTE %x=%x",aPtePtr,pte));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1489
		*aPtePtr = pte;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1490
		count = 1;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1491
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1492
		// clean cache...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1493
		CacheMaintenance::SinglePteUpdated((TLinAddr)aPtePtr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1494
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1495
	else
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1496
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1497
		// check we are only updating a single page table...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1498
		__NK_ASSERT_DEBUG(((TLinAddr(aPtePtr)^TLinAddr(aPtePtr+aCount-1))>>KPageTableShift)==0);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1499
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1500
		// map pages...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1501
		TPte* pPte = aPtePtr;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1502
		TPte* pPteEnd = aPtePtr+aCount;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1503
		do
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1504
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1505
			// map page...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1506
			TPhysAddr pagePhys = *aPages++;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1507
			TPte pte = *pPte++;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1508
			if(RPageArray::TargetStateIsCommitted(pagePhys))
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1509
				{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1510
				// clear type flags...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1511
				pagePhys &= ~KPageMask;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1512
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1513
				// page not being freed, so try and map it...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1514
				if(pte!=KPteUnallocatedEntry)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1515
					{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1516
					// already mapped...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1517
#ifdef _DEBUG
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1518
					if((pte^pagePhys)>=TPte(KPageSize))
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1519
						{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1520
						// but different!
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1521
						Kern::Printf("Mmu::MapPages already mapped %x->%x",pagePhys,pte);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1522
						__NK_ASSERT_DEBUG(0);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1523
						}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1524
#endif
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1525
					}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1526
				else
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1527
					{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1528
					// map page...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1529
					pte = pagePhys|aBlankPte;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1530
					TRACE2(("!PTE %x=%x",pPte-1,pte));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1531
					pPte[-1] = pte;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1532
					++count;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1533
					}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1534
				}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1535
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1536
		while(pPte!=pPteEnd);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1537
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1538
		// clean cache...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1539
		CacheMaintenance::MultiplePtesUpdated((TLinAddr)aPtePtr,(TLinAddr)pPte-(TLinAddr)aPtePtr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1540
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1541
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1542
done:
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1543
	// update page counts...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1544
	SPageTableInfo* pti = SPageTableInfo::FromPtPtr(aPtePtr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1545
	count = pti->IncPageCount(count);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1546
	TRACE2(("pt %x page count=%d",TLinAddr(aPtePtr)&~KPageTableMask,pti->PageCount()));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1547
	__NK_ASSERT_DEBUG(pti->CheckPageCount());
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1548
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1549
	// see if page table needs freeing...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1550
	TUint keepPt = count | pti->PermanenceCount();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1551
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1552
	__NK_ASSERT_DEBUG(!pti->IsDemandPaged()); // check not demand paged page table
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1553
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1554
	return keepPt;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1555
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1556
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1557
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1558
/**
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1559
Modify page table entries (PTEs) so they map a new page.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1560
Entries are only updated if the current state of the corresponding page
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1561
is RPageArray::ECommitted or RPageArray::EMoving.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1562
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1563
@param aPtePtr		Pointer into a page table for the PTE of the page.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1564
@param aPage		Pointer to the entry for the page in a memory object's #RPageArray.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1565
					The entry contains the physical address of a page together with its
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1566
					current state (RPageArray::TState).
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1567
@param aBlankPte	The value to use for each PTE, with the physical address component equal
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1568
					to zero.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1569
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1570
@pre #MmuLock held.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1571
@post #MmuLock held and has not been released by this function.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1572
*/
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1573
void Mmu::RemapPage(TPte* const aPtePtr, TPhysAddr& aPage, TPte aBlankPte)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1574
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1575
	__NK_ASSERT_DEBUG(MmuLock::IsHeld());
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1576
 	__NK_ASSERT_DEBUG(aBlankPte!=KPteUnallocatedEntry);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1577
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1578
	// get page to remap...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1579
	TPhysAddr pagePhys = aPage;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1580
	
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1581
	// Only remap the page if it is committed or it is being moved and
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1582
	// no other operation has been performed on the page.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1583
	if(!RPageArray::TargetStateIsCommitted(pagePhys))
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1584
		return; // page no longer needs mapping
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1585
	
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1586
	// Only remap the page if it is currently mapped, i.e. doesn't have an unallocated pte.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1587
	// This will only be true if a new mapping is being added but it hasn't yet updated 
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1588
	// all the ptes for the pages that it maps.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1589
	TPte pte = *aPtePtr;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1590
	if (pte == KPteUnallocatedEntry)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1591
		return;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1592
	
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1593
	// clear type flags...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1594
	pagePhys &= ~KPageMask;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1595
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1596
	SPageInfo* pi = SPageInfo::SafeFromPhysAddr(pagePhys);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1597
	if (pi)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1598
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1599
		SPageInfo::TPagedState pagedState = pi->PagedState();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1600
		if (pagedState != SPageInfo::EUnpaged)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1601
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1602
			// The page is demand paged.  Only remap the page if it is pinned or is currently
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1603
			// accessible but to the old physical page.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1604
			if (pagedState != SPageInfo::EPagedPinned &&
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1605
				 (Mmu::IsPteInaccessible(pte) || (pte^pagePhys) < TPte(KPageSize)))
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1606
				return;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1607
			if (!pi->IsDirty())
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1608
				{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1609
				// Ensure that the page is mapped as read only to prevent pages being marked dirty
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1610
				// by page moving despite not having been written to
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1611
				Mmu::MakePteInaccessible(aBlankPte, EFalse);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1612
				}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1613
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1614
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1615
	
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1616
	// Map the page in the page array entry as this is always the physical
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1617
	// page that the memory object's page should be mapped to.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1618
	pte = pagePhys|aBlankPte;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1619
	TRACE2(("!PTE %x=%x",aPtePtr,pte));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1620
	*aPtePtr = pte;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1621
	
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1622
	// clean cache...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1623
	CacheMaintenance::SinglePteUpdated((TLinAddr)aPtePtr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1624
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1625
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1626
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1627
/**
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1628
Modify page table entries (PTEs) so they no longer map any memory pages.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1629
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1630
@param aPtePtr		Pointer into a page table for the PTE of the first page.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1631
@param aCount		The number of pages to modify.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1632
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1633
@return False, if the page table no longer maps any entries and may be freed.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1634
		True otherwise, to indicate that the page table is still needed.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1635
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1636
@pre #MmuLock held.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1637
@post #MmuLock held and has not been released by this function.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1638
*/
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1639
TBool Mmu::UnmapPages(TPte* const aPtePtr, TUint aCount)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1640
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1641
	__NK_ASSERT_DEBUG(MmuLock::IsHeld());
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1642
	__NK_ASSERT_DEBUG(aCount);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1643
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1644
	TUint count = 0;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1645
	if(aCount==1)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1646
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1647
		if(*aPtePtr==KPteUnallocatedEntry)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1648
			return true; // page already unmapped
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1649
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1650
		// unmap page...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1651
		++count;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1652
		TPte pte = KPteUnallocatedEntry;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1653
		TRACE2(("!PTE %x=%x",aPtePtr,pte));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1654
		*aPtePtr = pte;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1655
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1656
		// clean cache...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1657
		CacheMaintenance::SinglePteUpdated((TLinAddr)aPtePtr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1658
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1659
	else
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1660
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1661
		// check we are only updating a single page table...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1662
		__NK_ASSERT_DEBUG(((TLinAddr(aPtePtr)^TLinAddr(aPtePtr+aCount-1))>>KPageTableShift)==0);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1663
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1664
		// unmap pages...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1665
		TPte* pPte = aPtePtr;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1666
		TPte* pPteEnd = aPtePtr+aCount;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1667
		do
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1668
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1669
			if(*pPte!=KPteUnallocatedEntry)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1670
				{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1671
				// unmap page...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1672
				++count;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1673
				TPte pte = KPteUnallocatedEntry;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1674
				TRACE2(("!PTE %x=%x",pPte,pte));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1675
				*pPte = pte;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1676
				}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1677
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1678
		while(++pPte<pPteEnd);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1679
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1680
		if(!count)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1681
			return true; // no PTEs changed, so nothing more to do
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1682
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1683
		// clean cache...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1684
		CacheMaintenance::MultiplePtesUpdated((TLinAddr)aPtePtr,(TLinAddr)pPte-(TLinAddr)aPtePtr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1685
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1686
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1687
	// update page table info...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1688
	SPageTableInfo* pti = SPageTableInfo::FromPtPtr(aPtePtr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1689
	count = pti->DecPageCount(count);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1690
	TRACE2(("pt %x page count=%d",TLinAddr(aPtePtr)&~KPageTableMask,count));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1691
	__NK_ASSERT_DEBUG(pti->CheckPageCount());
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1692
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1693
	// see if page table needs freeing...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1694
	TUint keepPt = count | pti->PermanenceCount();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1695
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1696
	return keepPt;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1697
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1698
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1699
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1700
/**
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1701
Modify page table entries (PTEs) so they no longer map the given memory pages.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1702
Entries are only updated if the current state of the corresponding page
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1703
is 'decommitted' i.e. RPageArray::TargetStateIsDecommitted returns true.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1704
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1705
@param aPtePtr		Pointer into a page table for the PTE of the first page.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1706
@param aCount		The number of pages to modify.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1707
@param aPages		Pointer to the entry for the first page in a memory object's #RPageArray.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1708
					Each entry contains the physical address of a page together with its
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1709
					current state (RPageArray::TState).
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1710
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1711
@return False, if the page table no longer maps any entries and may be freed.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1712
		True otherwise, to indicate that the page table is still needed.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1713
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1714
@pre #MmuLock held.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1715
@post #MmuLock held and has not been released by this function.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1716
*/
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1717
TBool Mmu::UnmapPages(TPte* const aPtePtr, TUint aCount, TPhysAddr* aPages)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1718
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1719
	__NK_ASSERT_DEBUG(MmuLock::IsHeld());
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1720
	__NK_ASSERT_DEBUG(aCount);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1721
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1722
	TUint count = 0;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1723
	if(aCount==1)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1724
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1725
		if(*aPtePtr==KPteUnallocatedEntry)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1726
			return true; // page already unmapped
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1727
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1728
		if(!RPageArray::TargetStateIsDecommitted(*aPages))
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1729
			return true; // page has been reallocated
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1730
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1731
		// unmap page...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1732
		++count;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1733
		TPte pte = KPteUnallocatedEntry;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1734
		TRACE2(("!PTE %x=%x",aPtePtr,pte));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1735
		*aPtePtr = pte;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1736
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1737
		// clean cache...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1738
		CacheMaintenance::SinglePteUpdated((TLinAddr)aPtePtr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1739
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1740
	else
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1741
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1742
		// check we are only updating a single page table...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1743
		__NK_ASSERT_DEBUG(((TLinAddr(aPtePtr)^TLinAddr(aPtePtr+aCount-1))>>KPageTableShift)==0);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1744
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1745
		// unmap pages...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1746
		TPte* pPte = aPtePtr;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1747
		TPte* pPteEnd = aPtePtr+aCount;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1748
		do
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1749
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1750
			if(RPageArray::TargetStateIsDecommitted(*aPages++) && *pPte!=KPteUnallocatedEntry)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1751
				{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1752
				// unmap page...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1753
				++count;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1754
				TPte pte = KPteUnallocatedEntry;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1755
				TRACE2(("!PTE %x=%x",pPte,pte));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1756
				*pPte = pte;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1757
				}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1758
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1759
		while(++pPte<pPteEnd);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1760
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1761
		if(!count)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1762
			return true; // no PTEs changed, so nothing more to do
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1763
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1764
		// clean cache...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1765
		CacheMaintenance::MultiplePtesUpdated((TLinAddr)aPtePtr,(TLinAddr)pPte-(TLinAddr)aPtePtr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1766
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1767
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1768
	// update page table info...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1769
	SPageTableInfo* pti = SPageTableInfo::FromPtPtr(aPtePtr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1770
	count = pti->DecPageCount(count);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1771
	TRACE2(("pt %x page count=%d",TLinAddr(aPtePtr)&~KPageTableMask,count));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1772
	__NK_ASSERT_DEBUG(pti->CheckPageCount());
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1773
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1774
	// see if page table needs freeing...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1775
	TUint keepPt = count | pti->PermanenceCount();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1776
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1777
	return keepPt;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1778
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1779
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1780
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1781
/**
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1782
Modify page table entries (PTEs) so the given memory pages are not accessible.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1783
Entries are only updated if the current state of the corresponding page
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1784
is RPageArray::ERestrictingNA.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1785
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1786
@param aPtePtr		Pointer into a page table for the PTE of the first page.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1787
@param aCount		The number of pages to modify.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1788
@param aPages		Pointer to the entry for the first page in a memory object's #RPageArray.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1789
					Each entry contains the physical address of a page together with its
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1790
					current state (RPageArray::TState).
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1791
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1792
@pre #MmuLock held.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1793
@post #MmuLock held and has not been released by this function.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1794
*/
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1795
void Mmu::RestrictPagesNA(TPte* const aPtePtr, TUint aCount, TPhysAddr* aPages)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1796
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1797
	__NK_ASSERT_DEBUG(MmuLock::IsHeld());
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1798
	__NK_ASSERT_DEBUG(aCount);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1799
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1800
	if(aCount==1)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1801
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1802
		TPhysAddr page = *aPages;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1803
		TPte pte = *aPtePtr;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1804
		RPageArray::TState state = RPageArray::State(page);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1805
		if(state != RPageArray::ERestrictingNA && state != RPageArray::EMoving)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1806
			return; // page no longer needs restricting
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1807
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1808
		if(pte==KPteUnallocatedEntry)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1809
			return; // page gone
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1810
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1811
		// restrict page...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1812
		pte = Mmu::MakePteInaccessible(pte,false);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1813
		TRACE2(("!PTE %x=%x",aPtePtr,pte));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1814
		*aPtePtr = pte;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1815
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1816
		// clean cache...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1817
		CacheMaintenance::SinglePteUpdated((TLinAddr)aPtePtr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1818
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1819
	else
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1820
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1821
		// check we are only updating a single page table...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1822
		__NK_ASSERT_DEBUG(((TLinAddr(aPtePtr)^TLinAddr(aPtePtr+aCount-1))>>KPageTableShift)==0);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1823
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1824
		// restrict pages...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1825
		TPte* pPte = aPtePtr;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1826
		TPte* pPteEnd = aPtePtr+aCount;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1827
		do
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1828
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1829
			TPhysAddr page = *aPages++;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1830
			TPte pte = *pPte++;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1831
			if(RPageArray::State(page)==RPageArray::ERestrictingNA && pte!=KPteUnallocatedEntry)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1832
				{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1833
				pte = Mmu::MakePteInaccessible(pte,false);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1834
				TRACE2(("!PTE %x=%x",pPte-1,pte));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1835
				pPte[-1] = pte;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1836
				}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1837
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1838
		while(pPte<pPteEnd);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1839
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1840
		// clean cache...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1841
		CacheMaintenance::MultiplePtesUpdated((TLinAddr)aPtePtr,(TLinAddr)pPte-(TLinAddr)aPtePtr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1842
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1843
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1844
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1845
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1846
/**
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1847
Modify page table entries (PTEs) so they map the given demand paged memory pages.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1848
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1849
Entries are only updated if the current state of the corresponding page
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1850
is RPageArray::ECommitted.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1851
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1852
This function is used for demand paged memory when handling a page fault or
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1853
memory pinning operation. It will widen the access permission of existing entries
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1854
if required to match \a aBlankPte and will 'rejuvenate' the page table.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1855
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1856
@param aPtePtr		Pointer into a page table for the PTE of the first page.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1857
@param aCount		The number of pages to modify.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1858
@param aPages		Pointer to the entry for the first page in a memory object's #RPageArray.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1859
					Each entry contains the physical address of a page together with its
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1860
					current state (RPageArray::TState).
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1861
@param aBlankPte	The value to use for each PTE, with the physical address component equal
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1862
					to zero.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1863
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1864
@return False, if the page table no longer maps any entries and may be freed.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1865
		True otherwise, to indicate that the page table is still needed.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1866
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1867
@pre #MmuLock held.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1868
@post MmuLock held (but may have been released by this function)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1869
*/
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1870
TBool Mmu::PageInPages(TPte* const aPtePtr, const TUint aCount, TPhysAddr* aPages, TPte aBlankPte)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1871
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1872
	__NK_ASSERT_DEBUG(MmuLock::IsHeld());
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1873
	__NK_ASSERT_DEBUG(aCount);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1874
	__NK_ASSERT_DEBUG(aBlankPte!=KPteUnallocatedEntry);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1875
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1876
	TUint count = 0;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1877
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1878
	if(aCount==1)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1879
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1880
		// get page to map...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1881
		TPhysAddr page = *aPages;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1882
		TPte pte = *aPtePtr;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1883
		if(!RPageArray::TargetStateIsCommitted(page))
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1884
			goto done; // page no longer needs mapping
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1885
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1886
#ifdef _DEBUG
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1887
		if(pte!=KPteUnallocatedEntry)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1888
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1889
			if ((pte^page)>=TPte(KPageSize) && !Mmu::IsPteInaccessible(pte) &&
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1890
				!Mmu::IsPteReadOnly(pte))
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1891
				{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1892
				// Page has been mapped before but the physical address is different
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1893
				// and the page hasn't been moved as it is not inaccessible.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1894
				Kern::Printf("Mmu::PageInPages already mapped %x->%x",page,pte);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1895
				__NK_ASSERT_DEBUG(0);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1896
				}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1897
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1898
#endif
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1899
		if(!Mmu::IsPteMoreAccessible(aBlankPte,pte))
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1900
			return true; // return true to keep page table (it already had at least page mapped)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1901
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1902
		// remap page with new increased permissions...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1903
		if(pte==KPteUnallocatedEntry)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1904
			count = 1; // we'll be adding a new pte entry, count it
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1905
		if(!Mmu::IsPteReadOnly(aBlankPte))
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1906
			ThePager.SetWritable(*SPageInfo::FromPhysAddr(page));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1907
		pte = (page&~KPageMask)|aBlankPte;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1908
		TRACE2(("!PTE %x=%x",aPtePtr,pte));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1909
		*aPtePtr = pte;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1910
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1911
		// clean cache...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1912
		CacheMaintenance::SinglePteUpdated((TLinAddr)aPtePtr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1913
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1914
	else
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1915
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1916
		// check we are only updating a single page table...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1917
		__NK_ASSERT_DEBUG(((TLinAddr(aPtePtr)^TLinAddr(aPtePtr+aCount-1))>>KPageTableShift)==0);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1918
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1919
		// map pages...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1920
		TPte* pPte = aPtePtr;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1921
		TPte* pPteEnd = aPtePtr+aCount;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1922
		do
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1923
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1924
			// map page...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1925
			TPhysAddr page = *aPages++;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1926
			TPte pte = *pPte++;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1927
			if(RPageArray::TargetStateIsCommitted(page))
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1928
				{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1929
#ifdef _DEBUG
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1930
				if(pte!=KPteUnallocatedEntry)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1931
					{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1932
					if ((pte^page)>=TPte(KPageSize) && !Mmu::IsPteInaccessible(pte) &&
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1933
						!Mmu::IsPteReadOnly(pte))
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1934
						{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1935
						// Page has been mapped before but the physical address is different
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1936
						// and the page hasn't been moved as it is not inaccessible.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1937
						Kern::Printf("Mmu::PageInPages already mapped %x->%x",page,pte);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1938
						__NK_ASSERT_DEBUG(0);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1939
						}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1940
					}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1941
#endif
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1942
				if(Mmu::IsPteMoreAccessible(aBlankPte,pte))
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1943
					{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1944
					// remap page with new increased permissions...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1945
					if(pte==KPteUnallocatedEntry)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1946
						++count; // we'll be adding a new pte entry, count it
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1947
					if(!Mmu::IsPteReadOnly(aBlankPte))
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1948
						ThePager.SetWritable(*SPageInfo::FromPhysAddr(page));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1949
					pte = (page&~KPageMask)|aBlankPte;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1950
					TRACE2(("!PTE %x=%x",pPte-1,pte));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1951
					pPte[-1] = pte;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1952
					}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1953
				}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1954
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1955
		while(pPte!=pPteEnd);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1956
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1957
		// clean cache...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1958
		CacheMaintenance::MultiplePtesUpdated((TLinAddr)aPtePtr,(TLinAddr)pPte-(TLinAddr)aPtePtr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1959
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1960
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1961
done:
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1962
	// update page counts...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1963
	SPageTableInfo* pti = SPageTableInfo::FromPtPtr(aPtePtr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1964
	count = pti->IncPageCount(count);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1965
	TRACE2(("pt %x page count=%d",TLinAddr(aPtePtr)&~KPageTableMask,pti->PageCount()));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1966
	__NK_ASSERT_DEBUG(pti->CheckPageCount());
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1967
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1968
	// see if page table needs freeing...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1969
	TUint keepPt = count | pti->PermanenceCount();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1970
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1971
	// rejuvenate demand paged page tables...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1972
	ThePager.RejuvenatePageTable(aPtePtr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1973
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1974
	return keepPt;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1975
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1976
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1977
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1978
//
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1979
// CodeModifier
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1980
//
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1981
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1982
#ifdef __DEBUGGER_SUPPORT__
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1983
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1984
void DoWriteCode(TUint32* aAddress, TUint32 aValue);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1985
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1986
#ifdef __SMP__
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1987
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1988
extern "C" void __e32_instruction_barrier();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1989
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1990
class TCodeModifierBroadcast : public TGenericIPI
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1991
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1992
public:
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1993
	TCodeModifierBroadcast(TUint32* aAddress, TUint32 aValue);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1994
	static void Isr(TGenericIPI*);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1995
	void Go();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1996
public:
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1997
	TUint32*		iAddress;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1998
	TUint32			iValue;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  1999
	volatile TInt	iFlag;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2000
	};
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2001
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2002
TCodeModifierBroadcast::TCodeModifierBroadcast(TUint32* aAddress, TUint32 aValue)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2003
	:	iAddress(aAddress), iValue(aValue), iFlag(0)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2004
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2005
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2006
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2007
void TCodeModifierBroadcast::Isr(TGenericIPI* aPtr)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2008
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2009
	TCodeModifierBroadcast& a = *(TCodeModifierBroadcast*)aPtr;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2010
	while (!__e32_atomic_load_acq32(&a.iFlag))
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2011
		__chill();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2012
#ifdef __BROADCAST_CACHE_MAINTENANCE__
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2013
	CacheMaintenance::CodeChanged((TLinAddr)a.iAddress, sizeof (TInt), CacheMaintenance::ECodeModifier);	// need to do separate Clean-D, Purge-I on each core
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2014
#else
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2015
	__e32_instruction_barrier();		// synchronize instruction execution
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2016
#endif
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2017
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2018
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2019
void TCodeModifierBroadcast::Go()
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2020
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2021
	NKern::Lock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2022
	QueueAllOther(&Isr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2023
	WaitEntry();					// wait for other cores to stop
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2024
	DoWriteCode(iAddress, iValue);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2025
	iFlag = 1;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2026
	__e32_instruction_barrier();	// synchronize instruction execution
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2027
	WaitCompletion();				// wait for other cores to resume
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2028
	NKern::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2029
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2030
#endif
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2031
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2032
/**
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2033
@pre Calling thread must be in critical section
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2034
@pre CodeSeg mutex held
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2035
*/
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2036
TInt CodeModifier::SafeWriteCode(DProcess* aProcess, TLinAddr aAddress, TInt aSize, TUint aValue, void* aOldValue)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2037
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2038
	__ASSERT_CRITICAL;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2039
	Mmu& m=TheMmu;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2040
	RamAllocLock::Lock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2041
	MmuLock::Lock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2042
	__UNLOCK_GUARD_START(MmuLock);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2043
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2044
	// Check aProcess is still alive by opening a reference on its os asid.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2045
	TInt osAsid = ((DMemModelProcess*)aProcess)->TryOpenOsAsid();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2046
	if (osAsid < 0)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2047
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2048
		__KTRACE_OPT(KDEBUGGER,Kern::Printf("CodeModifier::SafeWriteCode - zombie process"));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2049
		__UNLOCK_GUARD_END(MmuLock);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2050
		MmuLock::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2051
		RamAllocLock::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2052
		return KErrBadDescriptor;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2053
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2054
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2055
	// Find physical address of the page, the breakpoint belongs to
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2056
	TPhysAddr physAddr = Mmu::LinearToPhysical(aAddress, osAsid);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2057
	__KTRACE_OPT(KDEBUGGER,Kern::Printf("CodeModifier::SafeWriteCode - PA:%x", physAddr));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2058
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2059
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2060
	if (physAddr==KPhysAddrInvalid)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2061
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2062
		__KTRACE_OPT(KDEBUGGER,Kern::Printf("CodeModifier::SafeWriteCode - invalid VA"));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2063
		__UNLOCK_GUARD_END(MmuLock);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2064
		MmuLock::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2065
		RamAllocLock::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2066
		// The os asid is no longer required.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2067
		((DMemModelProcess*)aProcess)->CloseOsAsid();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2068
		return KErrBadDescriptor;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2069
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2070
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2071
	// Temporary map physical page
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2072
	TLinAddr tempAddr = m.MapTemp(physAddr&~KPageMask, aAddress>>KPageShift);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2073
	tempAddr |=  aAddress & KPageMask;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2074
	__KTRACE_OPT(KDEBUGGER,Kern::Printf("CodeModifier::SafeWriteCode - tempAddr:%x",tempAddr));
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2075
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2076
	TInt r = KErrBadDescriptor;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2077
	TUint32* ptr = (TUint32*)(tempAddr&~3);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2078
	TUint32 oldWord;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2079
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2080
	if(Kern::SafeRead(ptr,&oldWord,sizeof(oldWord))==0 // safely read the original value...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2081
		&& Kern::SafeWrite(ptr,&oldWord,sizeof(oldWord))==0 ) // and write it back
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2082
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2083
		// We have successfully probed the memory by reading and writing to it
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2084
		// so we assume it is now safe to access without generating exceptions.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2085
		// If this is wrong it will kill the system horribly.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2086
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2087
		TUint32 newWord;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2088
		TUint badAlign;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2089
		TUint shift = (aAddress&3)*8;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2090
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2091
		switch(aSize)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2092
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2093
		case 1: // 1 byte value
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2094
			badAlign = 0;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2095
			*(TUint8*)aOldValue = oldWord>>shift;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2096
			newWord = (oldWord&~(0xff<<shift)) | ((aValue&0xff)<<shift);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2097
			break;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2098
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2099
		case 2: // 2 byte value
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2100
			badAlign = tempAddr&1;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2101
			if(!badAlign)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2102
				*(TUint16*)aOldValue = oldWord>>shift;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2103
			newWord = (oldWord&~(0xffff<<shift)) | ((aValue&0xffff)<<shift);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2104
			break;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2105
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2106
		default: // 4 byte value
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2107
			badAlign = tempAddr&3;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2108
			if(!badAlign)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2109
				*(TUint32*)aOldValue = oldWord;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2110
			newWord = aValue;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2111
			break;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2112
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2113
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2114
		if(!badAlign)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2115
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2116
			// write the new value...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2117
#ifdef __SMP__
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2118
			TCodeModifierBroadcast b(ptr, newWord);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2119
			b.Go();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2120
#else
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2121
			DoWriteCode(ptr, newWord);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2122
#endif
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2123
			r = KErrNone;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2124
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2125
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2126
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2127
	__UNLOCK_GUARD_END(MmuLock);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2128
	m.UnmapTemp();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2129
	MmuLock::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2130
	RamAllocLock::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2131
	// The os asid is no longer required.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2132
	((DMemModelProcess*)aProcess)->CloseOsAsid();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2133
	return r;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2134
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2135
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2136
/**
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2137
@pre Calling thread must be in critical section
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2138
@pre CodeSeg mutex held
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2139
*/
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2140
void DoWriteCode(TUint32* aAddress, TUint32 aValue)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2141
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2142
	// We do not want to be interrupted by e.g. ISR that will run altered code before IMB-Range.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2143
	// Therefore, copy data and clean/invalidate caches with interrupts disabled.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2144
	TInt irq = NKern::DisableAllInterrupts();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2145
	*aAddress = aValue;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2146
	CacheMaintenance::CodeChanged((TLinAddr)aAddress, sizeof(TUint32), CacheMaintenance::ECodeModifier);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2147
	NKern::RestoreInterrupts(irq);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2148
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2149
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2150
#endif //__DEBUGGER_SUPPORT__
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2151
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2152
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2153
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2154
//
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2155
// Virtual pinning
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2156
//
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2157
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2158
TInt M::CreateVirtualPinObject(TVirtualPinObject*& aPinObject)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2159
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2160
	aPinObject = (TVirtualPinObject*)new DVirtualPinMapping;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2161
	return aPinObject != NULL ? KErrNone : KErrNoMemory;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2162
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2163
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2164
TInt M::PinVirtualMemory(TVirtualPinObject* aPinObject, TLinAddr aStart, TUint aSize, DThread* aThread)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2165
	{
47
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2166
	__ASSERT_CRITICAL;
43
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2167
	TUint offsetInMapping;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2168
	TUint mapInstanceCount;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2169
	DMemoryMapping* mapping = MM::FindMappingInThread(	(DMemModelThread*)aThread, 
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2170
														aStart, 
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2171
														aSize, 
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2172
														offsetInMapping, 
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2173
														mapInstanceCount);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2174
	TInt r = KErrBadDescriptor;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2175
	if (mapping)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2176
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2177
		TInt count = ((aStart & KPageMask) + aSize + KPageMask) >> KPageShift;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2178
		if(mapping->IsPinned())
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2179
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2180
			// Mapping for specified virtual address is pinned so we don't need to
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2181
			// do anything. Also, we can't safely pin the memory in this case
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2182
			// anyway, as pinned mappings may move between memory objects
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2183
			r = KErrNone;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2184
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2185
		else
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2186
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2187
			MmuLock::Lock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2188
			DMemoryObject* memory = mapping->Memory();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2189
			if (mapInstanceCount != mapping->MapInstanceCount() || 
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2190
				!memory || !memory->IsDemandPaged())
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2191
				{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2192
				// mapping has been reused, no memory, or it's not paged, so no need to pin...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2193
				MmuLock::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2194
				r = KErrNone;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2195
				}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2196
			else
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2197
				{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2198
				// paged memory needs pinning...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2199
				// Open a reference on the memory so it doesn't get deleted.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2200
				memory->Open();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2201
				MmuLock::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2202
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2203
				TUint startInMemory = (offsetInMapping >> KPageShift) + mapping->iStartIndex;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2204
				r = ((DVirtualPinMapping*)aPinObject)->Pin(	memory, startInMemory, count, mapping->Permissions(),
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2205
															mapping, mapInstanceCount);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2206
				memory->Close();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2207
				}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2208
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2209
		mapping->Close();
47
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2210
		}	
43
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2211
	return r;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2212
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2213
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2214
TInt M::CreateAndPinVirtualMemory(TVirtualPinObject*& aPinObject, TLinAddr aStart, TUint aSize)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2215
	{
47
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2216
	__ASSERT_CRITICAL;
43
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2217
	aPinObject = 0;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2218
	TUint offsetInMapping;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2219
	TUint mapInstanceCount;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2220
	DMemoryMapping* mapping = MM::FindMappingInThread(	(DMemModelThread*)&Kern::CurrentThread(), 
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2221
														aStart, 
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2222
														aSize, 
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2223
														offsetInMapping,
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2224
														mapInstanceCount);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2225
	TInt r = KErrBadDescriptor;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2226
	if (mapping)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2227
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2228
		TInt count = ((aStart & KPageMask) + aSize + KPageMask) >> KPageShift;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2229
		if(mapping->IsPinned())
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2230
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2231
			// Mapping for specified virtual address is pinned so we don't need to
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2232
			// do anything. Also, we can't safely pin the memory in this case
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2233
			// anyway, as pinned mappings may move between memory objects
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2234
			r = KErrNone;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2235
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2236
		else
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2237
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2238
			MmuLock::Lock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2239
			DMemoryObject* memory = mapping->Memory();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2240
			if (mapInstanceCount != mapping->MapInstanceCount() || 
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2241
				!memory || !memory->IsDemandPaged())
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2242
				{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2243
				// mapping has been reused, no memory, or it's not paged, so no need to pin...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2244
				MmuLock::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2245
				r = KErrNone;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2246
				}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2247
			else
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2248
				{// The memory is demand paged so create a pin object and pin it.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2249
				// Open a reference on the memory so it doesn't get deleted.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2250
				memory->Open();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2251
				MmuLock::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2252
				r = CreateVirtualPinObject(aPinObject);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2253
				if (r == KErrNone)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2254
					{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2255
					TUint startInMemory = (offsetInMapping >> KPageShift) + mapping->iStartIndex;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2256
					r = ((DVirtualPinMapping*)aPinObject)->Pin(	memory, startInMemory, count, mapping->Permissions(), 
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2257
																mapping, mapInstanceCount);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2258
					if (r != KErrNone)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2259
						{// Failed to pin the memory so pin object is not required.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2260
						DestroyVirtualPinObject(aPinObject);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2261
						}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2262
					}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2263
				memory->Close();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2264
				}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2265
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2266
		mapping->Close();
47
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2267
		}	
43
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2268
	return r;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2269
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2270
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2271
void M::UnpinVirtualMemory(TVirtualPinObject* aPinObject)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2272
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2273
	DVirtualPinMapping* mapping = (DVirtualPinMapping*)aPinObject;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2274
	if (mapping->IsAttached())
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2275
		mapping->Unpin();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2276
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2277
	
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2278
void M::DestroyVirtualPinObject(TVirtualPinObject*& aPinObject)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2279
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2280
	DVirtualPinMapping* mapping = (DVirtualPinMapping*)__e32_atomic_swp_ord_ptr(&aPinObject, 0);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2281
	if (mapping)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2282
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2283
		if (mapping->IsAttached())
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2284
			mapping->Unpin();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2285
		mapping->AsyncClose();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2286
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2287
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2288
47
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2289
//
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2290
// Physical pinning
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2291
//
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2292
43
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2293
TInt M::CreatePhysicalPinObject(TPhysicalPinObject*& aPinObject)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2294
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2295
	aPinObject = (TPhysicalPinObject*)new DPhysicalPinMapping;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2296
	return aPinObject != NULL ? KErrNone : KErrNoMemory;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2297
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2298
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2299
TInt M::PinPhysicalMemory(TPhysicalPinObject* aPinObject, TLinAddr aStart, TUint aSize, TBool aReadOnly,
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2300
				TPhysAddr& aAddress, TPhysAddr* aPages, TUint32& aMapAttr, TUint& aColour, DThread* aThread)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2301
	{
47
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2302
	__ASSERT_CRITICAL;
43
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2303
	TUint offsetInMapping;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2304
	TUint mapInstanceCount;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2305
	DMemoryMapping* mapping = MM::FindMappingInThread(	(DMemModelThread*)aThread, 
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2306
														aStart, 
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2307
														aSize, 
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2308
														offsetInMapping, 
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2309
														mapInstanceCount);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2310
	TInt r = KErrBadDescriptor;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2311
	if (mapping)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2312
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2313
		TInt count = ((aStart & KPageMask) + aSize + KPageMask) >> KPageShift;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2314
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2315
		MmuLock::Lock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2316
		DMemoryObject* memory = mapping->Memory();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2317
		if (mapInstanceCount == mapping->MapInstanceCount() && memory)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2318
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2319
			memory->Open();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2320
			MmuLock::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2321
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2322
			TUint startInMemory = (offsetInMapping >> KPageShift) + mapping->iStartIndex;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2323
			TMappingPermissions permissions = aReadOnly ? ESupervisorReadOnly : ESupervisorReadWrite;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2324
			r = ((DPhysicalPinMapping*)aPinObject)->Pin(memory, startInMemory, count, permissions);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2325
			if (r == KErrNone)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2326
				{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2327
				r = ((DPhysicalPinMapping*)aPinObject)->PhysAddr(0, count, aAddress, aPages);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2328
				if (r>=KErrNone)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2329
					{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2330
					r = KErrNone; //Do not report discontiguous memory in return value.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2331
					const TMappingAttributes2& mapAttr2 =
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2332
											MM::LegacyMappingAttributes(memory->Attributes(), mapping->Permissions());
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2333
					*(TMappingAttributes2*)&aMapAttr = mapAttr2;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2334
					}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2335
				else
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2336
					UnpinPhysicalMemory(aPinObject);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2337
				}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2338
			memory->Close();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2339
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2340
		else // mapping has been reused or no memory...
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2341
			{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2342
			MmuLock::Unlock();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2343
			}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2344
		mapping->Close();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2345
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2346
	aColour = (aStart >>KPageShift) & KPageColourMask;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2347
	return r;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2348
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2349
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2350
void M::UnpinPhysicalMemory(TPhysicalPinObject* aPinObject)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2351
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2352
	DPhysicalPinMapping* mapping = (DPhysicalPinMapping*)aPinObject;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2353
	if (mapping->IsAttached())
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2354
		mapping->Unpin();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2355
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2356
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2357
void M::DestroyPhysicalPinObject(TPhysicalPinObject*& aPinObject)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2358
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2359
	DPhysicalPinMapping* mapping = (DPhysicalPinMapping*)__e32_atomic_swp_ord_ptr(&aPinObject, 0);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2360
	if (mapping)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2361
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2362
		if (mapping->IsAttached())
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2363
			mapping->Unpin();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2364
		mapping->AsyncClose();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2365
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2366
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2367
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2368
47
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2369
//
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2370
// Kernel map and pin.
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2371
//
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2372
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2373
TInt M::CreateKernelMapObject(TKernelMapObject*& aMapObject, TUint aMaxReserveSize)
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2374
	{
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2375
	DKernelPinMapping*  pinObject = new DKernelPinMapping();
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2376
	aMapObject = (TKernelMapObject*) pinObject;
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2377
	if (pinObject == NULL)
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2378
		{
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2379
		return KErrNoMemory;
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2380
		}
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2381
	// Ensure we reserve enough bytes for all possible alignments of the start and 
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2382
	// end of the region to map.
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2383
	TUint reserveBytes = aMaxReserveSize? ((aMaxReserveSize + KPageMask) & ~KPageMask) + KPageSize : 0;
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2384
	TInt r = pinObject->Construct(reserveBytes);
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2385
	if (r != KErrNone)
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2386
		{// Failed so delete the kernel mapping object.
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2387
		pinObject->Close();
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2388
		aMapObject = NULL;
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2389
		}
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2390
	return r;
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2391
	}
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2392
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2393
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2394
TInt M::MapAndPinMemory(TKernelMapObject* aMapObject, DThread* aThread, TLinAddr aStart, 
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2395
						TUint aSize, TUint aMapAttributes, TLinAddr& aKernelAddr, TPhysAddr* aPages)
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2396
	{
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2397
	__ASSERT_CRITICAL;
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2398
	TUint offsetInMapping;
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2399
	TUint mapInstanceCount;
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2400
	DMemoryMapping* mapping = MM::FindMappingInThread(	(DMemModelThread*)aThread, 
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2401
														aStart, 
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2402
														aSize, 
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2403
														offsetInMapping, 
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2404
														mapInstanceCount);
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2405
	TInt r = KErrBadDescriptor;
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2406
	if (mapping)
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2407
		{
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2408
		DKernelPinMapping* kernelMap = (DKernelPinMapping*)aMapObject;
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2409
		TInt count = (((aStart + aSize + KPageMask) & ~KPageMask) - (aStart & ~KPageMask)) >> KPageShift;
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2410
		if (kernelMap->iReservePages && kernelMap->iReservePages < count)
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2411
			{
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2412
			mapping->Close();
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2413
			return KErrArgument;
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2414
			}
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2415
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2416
		MmuLock::Lock();
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2417
		DMemoryObject* memory = mapping->Memory();
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2418
		if (mapInstanceCount == mapping->MapInstanceCount() && memory)
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2419
			{
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2420
			memory->Open();
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2421
			MmuLock::Unlock();
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2422
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2423
			TUint startInMemory = (offsetInMapping >> KPageShift) + mapping->iStartIndex;
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2424
			TBool readOnly = aMapAttributes & Kern::EKernelMap_ReadOnly;
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2425
			TMappingPermissions permissions =  readOnly ? ESupervisorReadOnly : ESupervisorReadWrite;
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2426
			r = kernelMap->MapAndPin(memory, startInMemory, count, permissions);
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2427
			if (r == KErrNone)
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2428
				{
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2429
				__NK_ASSERT_DEBUG(!kernelMap->IsUserMapping());
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2430
				aKernelAddr = kernelMap->Base();
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2431
				TPhysAddr contigAddr;	// Ignore this value as aPages will be populated 
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2432
										// whether the memory is contiguous or not.
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2433
				r = kernelMap->PhysAddr(0, count, contigAddr, aPages);
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2434
				if (r>=KErrNone)
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2435
					{
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2436
					r = KErrNone; //Do not report discontiguous memory in return value.
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2437
					}
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2438
				else
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2439
					{
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2440
					UnmapAndUnpinMemory((TKernelMapObject*)kernelMap);
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2441
					}
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2442
				}
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2443
			memory->Close();
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2444
			}
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2445
		else // mapping has been reused or no memory...
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2446
			{
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2447
			MmuLock::Unlock();
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2448
			}
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2449
		mapping->Close();
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2450
		}
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2451
	return r;
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2452
	}
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2453
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2454
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2455
void M::UnmapAndUnpinMemory(TKernelMapObject* aMapObject)
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2456
	{
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2457
	DKernelPinMapping* mapping = (DKernelPinMapping*)aMapObject;
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2458
	if (mapping->IsAttached())
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2459
		mapping->UnmapAndUnpin();
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2460
	}
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2461
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2462
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2463
void M::DestroyKernelMapObject(TKernelMapObject*& aMapObject)
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2464
	{
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2465
	DKernelPinMapping* mapping = (DKernelPinMapping*)__e32_atomic_swp_ord_ptr(&aMapObject, 0);
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2466
	if (mapping)
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2467
		{
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2468
		if (mapping->IsAttached())
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2469
			mapping->UnmapAndUnpin();
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2470
		mapping->AsyncClose();
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2471
		}
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2472
	}
46fffbe7b5a7 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 45
diff changeset
  2473
43
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2474
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2475
//
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2476
// Cache sync operations
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2477
//
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2478
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2479
//@pre	As for MASK_THREAD_STANDARD
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2480
void Mmu::SyncPhysicalMemoryBeforeDmaWrite(TPhysAddr* aPages, TUint aColour, TUint aOffset, TUint aSize, TUint32 aMapAttr)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2481
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2482
	//Jump over the pages we do not have to sync
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2483
	aPages += aOffset>>KPageShift;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2484
	aOffset &=KPageMask;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2485
	aColour  = (aColour + (aOffset>>KPageShift)) & KPageColourMask;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2486
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2487
	//Calculate page table entry for the temporary mapping.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2488
	TUint pteType = PteType(ESupervisorReadWrite,true);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2489
	TMappingAttributes2 mapAttr2(aMapAttr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2490
	TPte pte = Mmu::BlankPte((TMemoryAttributes)mapAttr2.Type(), pteType);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2491
	
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2492
	while (aSize) //A single pass of loop operates within page boundaries.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2493
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2494
		TUint sizeInLoopPass = Min (KPageSize, aOffset+aSize) - aOffset; //The size of the region in this pass.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2495
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2496
		NKern::ThreadEnterCS();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2497
		Kern::MutexWait(*iPhysMemSyncMutex);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2498
		
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2499
		TLinAddr linAddr = iPhysMemSyncTemp.Map(*aPages, aColour, pte);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2500
		CacheMaintenance::MakeCPUChangesVisible(linAddr+aOffset, sizeInLoopPass, aMapAttr, *aPages+aOffset);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2501
		iPhysMemSyncTemp.Unmap();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2502
		
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2503
		Kern::MutexSignal(*iPhysMemSyncMutex);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2504
		NKern::ThreadLeaveCS();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2505
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2506
		aSize-=sizeInLoopPass;  // Remaining bytes to sync
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2507
		aOffset=0;				// In all the pages after the first, sync will always start with zero offset.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2508
		aPages++;	// Point to the next page
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2509
		aColour  = (aColour+1) & KPageColourMask;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2510
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2511
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2512
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2513
//@pre	As for MASK_THREAD_STANDARD
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2514
void Mmu::SyncPhysicalMemoryBeforeDmaRead(TPhysAddr* aPages, TUint aColour, TUint aOffset, TUint aSize, TUint32 aMapAttr)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2515
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2516
	//Jump over the pages we do not have to sync
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2517
	aPages += aOffset>>KPageShift;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2518
	aOffset &=KPageMask;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2519
	aColour  = (aColour + (aOffset>>KPageShift)) & KPageColourMask;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2520
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2521
	//Calculate page table entry for the temporary mapping.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2522
	TUint pteType = PteType(ESupervisorReadWrite,true);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2523
	TMappingAttributes2 mapAttr2(aMapAttr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2524
	TPte pte = Mmu::BlankPte((TMemoryAttributes)mapAttr2.Type(), pteType);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2525
	
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2526
	while (aSize) //A single pass of loop operates within page boundaries.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2527
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2528
		TUint sizeInLoopPass = Min (KPageSize, aOffset+aSize) - aOffset; //The size of the region in this pass.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2529
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2530
		NKern::ThreadEnterCS();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2531
		Kern::MutexWait(*iPhysMemSyncMutex);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2532
		
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2533
		TLinAddr linAddr = iPhysMemSyncTemp.Map(*aPages, aColour, pte);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2534
		CacheMaintenance::PrepareMemoryForExternalWrites(linAddr+aOffset, sizeInLoopPass, aMapAttr, *aPages+aOffset);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2535
		iPhysMemSyncTemp.Unmap();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2536
		
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2537
		Kern::MutexSignal(*iPhysMemSyncMutex);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2538
		NKern::ThreadLeaveCS();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2539
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2540
		aSize-=sizeInLoopPass;  // Remaining bytes to sync
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2541
		aOffset=0;				// In all the pages after the first, sync will always start with zero offset.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2542
		aPages++;	// Point to the next page
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2543
		aColour  = (aColour+1) & KPageColourMask;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2544
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2545
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2546
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2547
//@pre	As for MASK_THREAD_STANDARD
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2548
void Mmu::SyncPhysicalMemoryAfterDmaRead(TPhysAddr* aPages, TUint aColour, TUint aOffset, TUint aSize, TUint32 aMapAttr)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2549
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2550
	//Jump over the pages we do not have to sync
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2551
	aPages += aOffset>>KPageShift;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2552
	aOffset &=KPageMask;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2553
	aColour  = (aColour + (aOffset>>KPageShift)) & KPageColourMask;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2554
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2555
	//Calculate page table entry for the temporary mapping.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2556
	TUint pteType = PteType(ESupervisorReadWrite,true);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2557
	TMappingAttributes2 mapAttr2(aMapAttr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2558
	TPte pte = Mmu::BlankPte((TMemoryAttributes)mapAttr2.Type(), pteType);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2559
	
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2560
	while (aSize) //A single pass of loop operates within page boundaries.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2561
		{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2562
		TUint sizeInLoopPass = Min (KPageSize, aOffset+aSize) - aOffset; //The size of the region in this pass.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2563
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2564
		NKern::ThreadEnterCS();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2565
		Kern::MutexWait(*iPhysMemSyncMutex);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2566
		
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2567
		TLinAddr linAddr = iPhysMemSyncTemp.Map(*aPages, aColour, pte);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2568
		CacheMaintenance::MakeExternalChangesVisible(linAddr+aOffset, sizeInLoopPass, aMapAttr, *aPages+aOffset);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2569
		iPhysMemSyncTemp.Unmap();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2570
		
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2571
		Kern::MutexSignal(*iPhysMemSyncMutex);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2572
		NKern::ThreadLeaveCS();
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2573
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2574
		aSize-=sizeInLoopPass;  // Remaining bytes to sync
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2575
		aOffset=0;				// In all the pages after the first, sync will always start with zero offset.
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2576
		aPages++;	// Point to the next page
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2577
		aColour  = (aColour+1) & KPageColourMask;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2578
		}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2579
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2580
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2581
EXPORT_C TInt Cache::SyncPhysicalMemoryBeforeDmaWrite(TPhysAddr* aPages, TUint aColour, TUint aOffset, TUint aSize, TUint32 aMapAttr)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2582
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2583
	CHECK_PRECONDITIONS(MASK_THREAD_STANDARD,"Cache::SyncPhysicalMemoryBeforeDmaWrite");
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2584
	TheMmu.SyncPhysicalMemoryBeforeDmaWrite(aPages, aColour, aOffset, aSize, aMapAttr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2585
	return KErrNone;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2586
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2587
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2588
EXPORT_C TInt Cache::SyncPhysicalMemoryBeforeDmaRead(TPhysAddr* aPages, TUint aColour, TUint aOffset, TUint aSize, TUint32 aMapAttr)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2589
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2590
	CHECK_PRECONDITIONS(MASK_THREAD_STANDARD,"Cache::SyncPhysicalMemoryBeforeDmaRead");
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2591
	TheMmu.SyncPhysicalMemoryBeforeDmaRead(aPages, aColour, aOffset, aSize, aMapAttr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2592
	return KErrNone;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2593
	}
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2594
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2595
EXPORT_C TInt Cache::SyncPhysicalMemoryAfterDmaRead(TPhysAddr* aPages, TUint aColour, TUint aOffset, TUint aSize, TUint32 aMapAttr)
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2596
	{
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2597
	CHECK_PRECONDITIONS(MASK_THREAD_STANDARD,"Cache::SyncPhysicalMemoryAfterDmaRead");
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2598
	TheMmu.SyncPhysicalMemoryAfterDmaRead(aPages, aColour, aOffset, aSize, aMapAttr);
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2599
	return KErrNone;
96e5fb8b040d Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
  2600
	}