1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/kernelhwsrv/kernel/eka/include/memmodel/epoc/flexible/memmodel.h Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,541 @@
1.4 +// Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).
1.5 +// All rights reserved.
1.6 +// This component and the accompanying materials are made available
1.7 +// under the terms of the License "Eclipse Public License v1.0"
1.8 +// which accompanies this distribution, and is available
1.9 +// at the URL "http://www.eclipse.org/legal/epl-v10.html".
1.10 +//
1.11 +// Initial Contributors:
1.12 +// Nokia Corporation - initial contribution.
1.13 +//
1.14 +// Contributors:
1.15 +//
1.16 +// Description:
1.17 +// e32/include/memmodel/epoc/flexible/memmodel.h
1.18 +// Flexible Memory Model header file
1.19 +
1.20 +/**
1.21 + @file
1.22 + @internalComponent
1.23 +*/
1.24 +
1.25 +
1.26 +#ifndef __MEMMODEL_H__
1.27 +#define __MEMMODEL_H__
1.28 +
1.29 +#include <plat_priv.h>
1.30 +#include <memmodel/epoc/mmubase/kblockmap.h>
1.31 +#include <mmtypes.h>
1.32 +#include <mmboot.h>
1.33 +
1.34 +#ifdef __SMP__
1.35 +// SubScheduler fields for each processor
1.36 +#define i_AliasLinAddr iExtras[0]
1.37 +#define i_AliasPdePtr iExtras[1]
1.38 +#endif
1.39 +
1.40 +/********************************************
1.41 + * Deterministic Scheduler Implementation
1.42 + ********************************************/
1.43 +
1.44 +/**
1.45 +@internalComponent
1.46 +*/
1.47 +#define TheCurrentAddressSpace ((DMemModelProcess*&)TheScheduler.iAddressSpace)
1.48 +
1.49 +class DMemoryObject;
1.50 +class DMemoryMapping;
1.51 +
1.52 +/********************************************
1.53 + * Thread Control Block
1.54 + ********************************************/
1.55 +
1.56 +class DMemModelProcess;
1.57 +
1.58 +/**
1.59 +@internalComponent
1.60 +*/
1.61 +class DMemModelThread : public DThread
1.62 + {
1.63 +public:
1.64 + TInt Alias(TLinAddr aAddr, DMemModelProcess* aProcess, TInt aSize, TLinAddr& aAliasAddr, TUint& aAliasSize);
1.65 + void RemoveAlias();
1.66 + void RefreshAlias();
1.67 + virtual void DoExit1();
1.68 + static void RestoreAddressSpace();
1.69 + virtual void BTracePrime(TInt aCategory);
1.70 +protected:
1.71 + virtual void SetPaging(TUint& aCreateFlags);
1.72 +private:
1.73 + void DoRemoveAlias(TLinAddr aAddr);
1.74 +public:
1.75 + TLinAddr iAliasLinAddr; // linear address to access aliased memory (0 means no alias is present).
1.76 + TPde* iAliasPdePtr; // Address of PDE which has been modified to make aliased memory accessible.
1.77 + TPde iAliasPde; // PDE to store at iAliasPdePtr.
1.78 + DMemModelProcess* iAliasProcess; // The process whose memory is aliased.
1.79 + SDblQueLink iAliasLink; // link to make TheMmu.iAliasList.
1.80 + TLinAddr iAliasTarget; // linear address of the memory which has been aliased
1.81 + DMemoryMapping* iKernelStackMapping;
1.82 + DMemoryMapping* iUserStackMapping;
1.83 +#ifdef __SMP__
1.84 + TInt iCpuRestoreCookie;
1.85 +#endif
1.86 + };
1.87 +
1.88 +
1.89 +/********************************************
1.90 + * Process Control Block
1.91 + ********************************************/
1.92 +
1.93 +class DMemModelChunk;
1.94 +class DMemModelCodeSegMemory;
1.95 +class RAddressedContainer;
1.96 +
1.97 +#ifdef INCLUDED_FROM_ASM
1.98 +#define PRIVATE_EXCEPT_ASM public
1.99 +#else
1.100 +#define PRIVATE_EXCEPT_ASM private
1.101 +#endif
1.102 +
1.103 +
1.104 +/**
1.105 +@internalComponent
1.106 +*/
1.107 +class DMemModelProcess : public DEpocProcess
1.108 + {
1.109 +public:
1.110 + ~DMemModelProcess();
1.111 +private:
1.112 + void Destruct();
1.113 +protected:
1.114 + virtual TInt AttachExistingCodeSeg(TProcessCreateInfo& aInfo);
1.115 + virtual TInt SetPaging(const TProcessCreateInfo& aInfo);
1.116 +public:
1.117 + virtual TInt DoCreate(TBool aKernelProcess, TProcessCreateInfo& aInfo);
1.118 + virtual TInt NewChunk(DChunk*& aChunk, SChunkCreateInfo& aInfo, TLinAddr& aRunAddr);
1.119 + virtual TInt AddChunk(DChunk* aChunk,TBool aIsReadOnly);
1.120 + virtual TInt NewShPool(DShPool*& aPool, TShPoolCreateInfo& aInfo);
1.121 + virtual TInt CreateDataBssStackArea(TProcessCreateInfo& aInfo);
1.122 + virtual TInt MapCodeSeg(DCodeSeg* aCodeSeg);
1.123 + virtual void UnmapCodeSeg(DCodeSeg* aCodeSeg);
1.124 + virtual void RemoveDllData();
1.125 + virtual void FinalRelease();
1.126 + virtual void BTracePrime(TInt aCategory);
1.127 +public:
1.128 + TInt DoAddChunk(DMemModelChunk* aChunk, TBool aIsReadOnly);
1.129 + TInt AllocateDataSectionBase(DMemModelChunk& aChunk, TUint& aBase);
1.130 + TUint8* DataSectionBase(DMemModelChunk* aChunk);
1.131 + void RemoveChunk(DMemModelChunk *aChunk);
1.132 + void DoRemoveChunk(TInt aIndex);
1.133 + TInt ChunkIndex(DMemModelChunk* aChunk);
1.134 + TUint ChunkInsertIndex(DMemModelChunk* aChunk);
1.135 + TInt CommitDllData(TLinAddr aBase, TInt aSize, DCodeSeg* aCodeSeg);
1.136 + void DecommitDllData(TLinAddr aBase, TInt aSize);
1.137 + TInt MapUserRamCode(DMemModelCodeSegMemory* aMemory);
1.138 + void UnmapUserRamCode(DMemModelCodeSegMemory* aMemory);
1.139 + inline TInt OsAsid()
1.140 + {__NK_ASSERT_DEBUG( TheCurrentThread->iOwningProcess == this || // current thread's process so asid can't be freed.
1.141 + iOsAsid == (TInt)KKernelOsAsid || // kernel process so asid can't be freed.
1.142 + iContainerID != EProcess || // process not fully created yet so asid can't be freed.
1.143 + iOsAsidRefCount > 1); // if none of the others are true then should have a reference
1.144 + // to prevent asid being freed (this check isn't very
1.145 + // robust but best we can do).
1.146 + return iOsAsid;
1.147 + };
1.148 +
1.149 + TInt TryOpenOsAsid();
1.150 + void CloseOsAsid();
1.151 + void AsyncCloseOsAsid();
1.152 +public:
1.153 + struct SChunkInfo
1.154 + {
1.155 + DMemModelChunk* iChunk;
1.156 + DMemoryMapping* iMapping;
1.157 + TInt16 iAccessCount;
1.158 + TInt16 iIsReadOnly;
1.159 + };
1.160 +
1.161 + TInt iChunkCount;
1.162 + TInt iChunkAlloc;
1.163 + SChunkInfo* iChunks;
1.164 + RAddressedContainer* iSharedChunks;
1.165 + TPhysAddr iPageDir;
1.166 + DMemoryMapping* iDataBssMapping;
1.167 + /**
1.168 + Size of virtual memory allocated in process for EXE code, but which hasn't yet been been
1.169 + adopted by the codeseg memory mapping.
1.170 + */
1.171 + TUint iCodeVirtualAllocSize;
1.172 + /**
1.173 + Address of virtual memory allocated in process for EXE code.
1.174 + */
1.175 + TLinAddr iCodeVirtualAllocAddress;
1.176 +
1.177 +PRIVATE_EXCEPT_ASM:
1.178 + TInt iOsAsid; // This should only be accessed directly by the scheduler,
1.179 + // in all other cases use either OsAsid() or TryOpenOsAsid().
1.180 +private:
1.181 + TUint iOsAsidRefCount;
1.182 +public:
1.183 + friend class Monitor;
1.184 + };
1.185 +
1.186 +
1.187 +/********************************************
1.188 + * Chunk Control Block
1.189 + ********************************************/
1.190 +
1.191 +/**
1.192 +@internalComponent
1.193 +*/
1.194 +class DMemModelChunk : public DChunk
1.195 + {
1.196 +public:
1.197 + /**
1.198 + @see DChunk::TChunkAttributes for generic attribute flags
1.199 + */
1.200 + enum TMemModelChunkAttributes
1.201 + {
1.202 + EPrivate =0x00000000, // need to be iOwningProcess in order to map or change chunk
1.203 + EPublic =0x80000000, // not EPrivate
1.204 + ECode =0x40000000, // contents are executable
1.205 + EMMChunkAttributesMask = EPrivate | EPublic | ECode,
1.206 + };
1.207 +
1.208 +public:
1.209 + DMemModelChunk();
1.210 + ~DMemModelChunk();
1.211 +public:
1.212 + virtual TInt Close(TAny* aPtr);
1.213 + virtual TInt DoCreate(SChunkCreateInfo& aInfo);
1.214 + virtual TInt Adjust(TInt aNewSize);
1.215 + virtual TInt AdjustDoubleEnded(TInt aBottom, TInt aTop);
1.216 + virtual TInt CheckAccess();
1.217 + virtual TInt Commit(TInt aOffset, TInt aSize, TCommitType aCommitType=DChunk::ECommitDiscontiguous, TUint32* aExtraArg=0);
1.218 + virtual TInt Allocate(TInt aSize, TInt aGuard=0, TInt aAlign=0);
1.219 + virtual TInt Decommit(TInt aOffset, TInt aSize);
1.220 + virtual TInt Lock(TInt aOffset, TInt aSize);
1.221 + virtual TInt Unlock(TInt aOffset, TInt aSize);
1.222 + virtual TInt Address(TInt aOffset, TInt aSize, TLinAddr& aKernelAddress);
1.223 + virtual TInt PhysicalAddress(TInt aOffset, TInt aSize, TLinAddr& aKernelAddress, TUint32& aPhysicalAddress, TUint32* aPhysicalPageList=NULL);
1.224 + virtual void BTracePrime(TInt aCategory);
1.225 + virtual void Substitute(TInt aOffset, TPhysAddr aOldAddr, TPhysAddr aNewAddr);
1.226 + virtual TUint8* Base(DProcess* aProcess);
1.227 +protected:
1.228 + virtual void SetPaging(TUint aCreateAtt);
1.229 +public:
1.230 + void SetFixedAddress(TLinAddr aAddr, TInt aInitialSize);
1.231 + TInt SetAttributes(SChunkCreateInfo& aInfo);
1.232 + TInt DoCommit(TInt aOffset, TInt aSize, TCommitType aCommitType=DChunk::ECommitDiscontiguous, TUint32* aExtraArg=0);
1.233 + void DoDecommit(TInt aOffset, TInt aSize);
1.234 + TInt CheckRegion(TInt& aOffset, TInt& aSize);
1.235 +public:
1.236 + TBitMapAllocator* iPageBitMap; // NULL if not disconnected chunk
1.237 + TBitMapAllocator* iPermanentPageBitMap;
1.238 +
1.239 + /**
1.240 + The memory object containing this chunk's memory.
1.241 + */
1.242 + DMemoryObject* iMemoryObject;
1.243 +
1.244 + /**
1.245 + For shared chunks and shared i/o buffers this is the mapping
1.246 + which maps #iMemoryObject into the kernel's address space.
1.247 + */
1.248 + DMemoryMapping* iKernelMapping;
1.249 +public:
1.250 + friend class Monitor;
1.251 + };
1.252 +
1.253 +
1.254 +/**
1.255 +@internalComponent
1.256 +*/
1.257 +class DMemModelChunkHw : public DPlatChunkHw
1.258 + {
1.259 +public:
1.260 + virtual TInt Close(TAny* aPtr);
1.261 +public:
1.262 + DMemoryObject* iMemoryObject;
1.263 + DMemoryMapping* iKernelMapping;
1.264 + };
1.265 +
1.266 +
1.267 +
1.268 +/********************************************
1.269 + * Code segment
1.270 + ********************************************/
1.271 +
1.272 +class TPagedCodeInfo;
1.273 +
1.274 +/**
1.275 +@internalComponent
1.276 +*/
1.277 +class DMemModelCodeSegMemory : public DEpocCodeSegMemory
1.278 + {
1.279 +public:
1.280 + DMemModelCodeSegMemory(DEpocCodeSeg* aCodeSeg);
1.281 + ~DMemModelCodeSegMemory();
1.282 + TInt Create(TCodeSegCreateInfo& aInfo, DMemModelProcess* aProcess);
1.283 + TInt Loaded(TCodeSegCreateInfo& aInfo);
1.284 + void Destroy();
1.285 +public:
1.286 + /**
1.287 + The process loading this code segment.
1.288 + */
1.289 + DMemModelProcess* iCreator;
1.290 +
1.291 + /**
1.292 + Kernel side copy of the codeseg's export directory or NULL.
1.293 + */
1.294 + TLinAddr* iCopyOfExportDir;
1.295 +
1.296 + /**
1.297 + For demand paged codeseg's, pointer to saved copy of the data section.
1.298 + */
1.299 + TAny* iDataSectionMemory;
1.300 +
1.301 + /**
1.302 + The memory object containing the memory for the codeseg.
1.303 + */
1.304 + DMemoryObject* iCodeMemoryObject;
1.305 +
1.306 + /**
1.307 + A writable mapping which maps #iCodeMemoryObject into the loader
1.308 + process's memory so it can be accessed by the loader.
1.309 +
1.310 + This mapping is destroyed once #Loaded is called.
1.311 + */
1.312 + DMemoryMapping* iCodeLoadMapping;
1.313 +
1.314 + /**
1.315 + For demand paged codeseg's, this is a writable mapping added to the
1.316 + loader process's address space which maps a memory object used to
1.317 + hold the initial contents of the codeseg's data section.
1.318 +
1.319 + This mapping, and it's memory object, is destroyed once #Loaded is called.
1.320 + */
1.321 + DMemoryMapping* iDataLoadMapping;
1.322 +
1.323 + /**
1.324 + Size of any shared virtual memory allocated for the code.
1.325 + */
1.326 + TUint iVirtualAllocCommonSize;
1.327 +
1.328 + /**
1.329 + For demand paged codeseg's, a pointer to the #TPagedCodeInfo
1.330 + used with #iCodeMemoryObject.
1.331 + */
1.332 + TPagedCodeInfo* iPagedCodeInfo;
1.333 + };
1.334 +
1.335 +
1.336 +/**
1.337 +@internalComponent
1.338 +*/
1.339 +class DMemModelCodeSeg: public DEpocCodeSeg
1.340 + {
1.341 +public:
1.342 + DMemModelCodeSeg();
1.343 + virtual ~DMemModelCodeSeg();
1.344 + virtual TInt DoCreateRam(TCodeSegCreateInfo& aInfo, DProcess* aProcess);
1.345 + virtual TInt DoCreateXIP(DProcess* aProcess);
1.346 + virtual TInt Loaded(TCodeSegCreateInfo& aInfo);
1.347 + virtual void ReadExportDir(TUint32* aDest);
1.348 + virtual TBool FindCheck(DProcess* aProcess);
1.349 + virtual TBool OpenCheck(DProcess* aProcess);
1.350 + inline DMemModelCodeSegMemory* Memory()
1.351 + { return (DMemModelCodeSegMemory*)iMemory; }
1.352 + virtual void BTracePrime(TInt aCategory);
1.353 +public:
1.354 + /**
1.355 + For kernel codesegs, the address of the memory allocated for its static data.
1.356 + */
1.357 + TAny* iKernelData;
1.358 +
1.359 + /**
1.360 + The memory object containing the memory for this codeseg.
1.361 + */
1.362 + DMemoryObject* iCodeMemoryObject;
1.363 +
1.364 + /**
1.365 + A writable mapping which maps #iCodeMemoryObject into the loader
1.366 + process's memory so it can be accessed by the loader.
1.367 +
1.368 + This mapping is destroyed once #Loaded is called.
1.369 + */
1.370 + DMemoryMapping* iCodeLoadMapping;
1.371 +
1.372 + /**
1.373 + The read=only mapping used for kernel and global codesegs to map
1.374 + #iCodeMemoryObject into the global address region.
1.375 + */
1.376 + DMemoryMapping* iCodeGlobalMapping;
1.377 +
1.378 + /**
1.379 + Base address of virtual memory allocated for the codeseg's static data.
1.380 + */
1.381 + TLinAddr iDataAllocBase;
1.382 +
1.383 + /**
1.384 + Size of virtual memory allocated for the codeseg's static data.
1.385 + */
1.386 + TUint iDataAllocSize;
1.387 + };
1.388 +
1.389 +
1.390 +/********************************************
1.391 + * Shared buffers and pools
1.392 + ********************************************/
1.393 +
1.394 +#include <kernel/sshbuf.h>
1.395 +
1.396 +class DShBufMapping;
1.397 +
1.398 +
1.399 +class DMemModelNonAlignedShBuf : public DShBuf
1.400 + {
1.401 +public:
1.402 + DMemModelNonAlignedShBuf(DShPool* aPool, TLinAddr aRelAddr);
1.403 + ~DMemModelNonAlignedShBuf();
1.404 +
1.405 + TInt Close(TAny*);
1.406 + TInt AddToProcess(DProcess* aProcess, TUint aAttr);
1.407 +
1.408 +protected:
1.409 + virtual TInt Pin(TPhysicalPinObject* aPinObject, TBool aReadOnly, TPhysAddr& aAddress, TPhysAddr* aPages, TUint32& aMapAttr, TUint& aColour);
1.410 + virtual TInt Map(TUint, DProcess*, TLinAddr&);
1.411 + virtual TInt UnMap(DProcess*);
1.412 + virtual TUint8* Base(DProcess* aProcess);
1.413 + virtual TUint8* Base();
1.414 + };
1.415 +
1.416 +
1.417 +class DMemModelAlignedShBuf : public DShBuf
1.418 + {
1.419 +public:
1.420 + DMemModelAlignedShBuf(DShPool* aPool);
1.421 + virtual ~DMemModelAlignedShBuf();
1.422 +
1.423 + TInt Create();
1.424 + virtual TInt Construct();
1.425 +
1.426 + TInt Close(TAny*);
1.427 + TInt AddToProcess(DProcess* aProcess, TUint aAttr);
1.428 +
1.429 +protected:
1.430 + TUint8* Base(DProcess* aProcess);
1.431 + TUint8* Base();
1.432 + TInt Map(TUint, DProcess*, TLinAddr&);
1.433 + TInt UnMap(DProcess*);
1.434 + TInt Pin(TPhysicalPinObject* aPinObject, TBool aReadOnly, TPhysAddr& Address, TPhysAddr* aPages, TUint32& aMapAttr, TUint& aColour);
1.435 +
1.436 +private:
1.437 + TInt FindMapping(DShBufMapping*&, DMemModelProcess*);
1.438 + DMemoryObject* iMemoryObject;
1.439 + DMemoryMapping* iKernelMapping;
1.440 + SDblQue iMappings;
1.441 + friend class DMemModelAlignedShPool;
1.442 + };
1.443 +
1.444 +class DMemModelShPool : public DShPool
1.445 + {
1.446 +public:
1.447 + DMemModelShPool();
1.448 + virtual ~DMemModelShPool();
1.449 +protected:
1.450 + void DestroyClientResources(DProcess* aProcess);
1.451 + virtual TInt DestroyAllMappingsAndReservedHandles(DProcess* aProcess) = 0;
1.452 + };
1.453 +
1.454 +class DMemModelAlignedShPoolClient : public DShPoolClient
1.455 + {
1.456 +public:
1.457 + SDblQue iMappingFreeList;
1.458 + TInt iWindowSize;
1.459 + };
1.460 +
1.461 +class DMemModelNonAlignedShPoolClient : public DShPoolClient
1.462 + {
1.463 +public:
1.464 + DMemoryMapping* iMapping;
1.465 + };
1.466 +
1.467 +class DShBufMapping;
1.468 +
1.469 +class DMemModelAlignedShPool : public DMemModelShPool
1.470 + {
1.471 +public:
1.472 + DMemModelAlignedShPool();
1.473 + virtual ~DMemModelAlignedShPool();
1.474 +
1.475 + TInt Close(TAny* aPtr);
1.476 + TInt CreateInitialBuffers();
1.477 + TInt SetBufferWindow(DProcess* aProcess, TInt aWindowSize);
1.478 + TInt AddToProcess(DProcess* aProcess, TUint aAttr);
1.479 + TInt Alloc(DShBuf*&);
1.480 +
1.481 +private:
1.482 + TInt DoCreate(TShPoolCreateInfo& aInfo);
1.483 + TInt GrowPool();
1.484 + TInt ShrinkPool();
1.485 + TInt MappingNew(DShBufMapping*& aMapping, DMemModelProcess* aProcess);
1.486 + TInt GetFreeMapping(DShBufMapping*& aMapping, DMemModelAlignedShPoolClient* aClient);
1.487 + TInt ReleaseMapping(DShBufMapping*& aMapping, DMemModelAlignedShPoolClient* aClient);
1.488 + TInt UpdateMappingsAndReservedHandles(TInt aNoOfBuffers);
1.489 + TInt UpdateFreeList();
1.490 + void Free(DShBuf* aBuf);
1.491 + TInt CreateMappings(DMemModelAlignedShPoolClient* aClient, TInt aNoOfMappings, DMemModelProcess* aProcess);
1.492 + TInt DestroyAllMappingsAndReservedHandles(DProcess* aProcess);
1.493 + TInt DestroyMappings(DMemModelAlignedShPoolClient* aClient, TInt aNoOfMappings);
1.494 +
1.495 + TInt DeleteInitialBuffers();
1.496 +
1.497 + SDblQue iPendingList;
1.498 + DMemModelAlignedShBuf* iInitialBuffersArray;
1.499 +
1.500 + friend class DMemModelAlignedShBuf;
1.501 + };
1.502 +
1.503 +class DMemModelNonAlignedShPool : public DMemModelShPool
1.504 + {
1.505 +public:
1.506 + DMemModelNonAlignedShPool();
1.507 + virtual ~DMemModelNonAlignedShPool();
1.508 +
1.509 + TInt Close(TAny* aPtr);
1.510 +
1.511 + TInt DoInitFreeList();
1.512 + TUint8* Base(DProcess* aProcess);
1.513 +
1.514 + inline TUint8* Base()
1.515 + {
1.516 + return reinterpret_cast<TUint8*>(iBaseAddress);
1.517 + };
1.518 + TInt AddToProcess(DProcess* aProcess, TUint aAttr);
1.519 + TInt CreateInitialBuffers();
1.520 +
1.521 + TInt Alloc(DShBuf*&);
1.522 +
1.523 +private:
1.524 + void Free(DShBuf* aBuf);
1.525 + TInt UpdateFreeList();
1.526 +
1.527 + TInt DoCreate(TShPoolCreateInfo& aInfo);
1.528 + void FreeBufferPages(TUint aOffset);
1.529 + TInt GrowPool();
1.530 + TInt ShrinkPool();
1.531 + TInt DeleteInitialBuffers();
1.532 + TInt DestroyAllMappingsAndReservedHandles(DProcess* aProcess);
1.533 +
1.534 +private:
1.535 + TLinAddr iBaseAddress;
1.536 + DMemoryObject* iMemoryObject; // the 'real' memory pool (in the kernel)
1.537 + DMemModelNonAlignedShBuf* iInitialBuffersArray;
1.538 + TBitMapAllocator* iBufMap;
1.539 + TBitMapAllocator* iPagesMap;
1.540 +
1.541 + friend class DMemModelNonAlignedShBuf;
1.542 + };
1.543 +
1.544 +#endif