--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/navienginebsp/naviengine_assp/pci/chunkman.h	Tue Sep 28 18:00:05 2010 +0100
@@ -0,0 +1,96 @@
+/*
+* Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  
+*
+*/
+
+
+
+#ifndef __CHUNKMAN_H__
+#define __CHUNKMAN_H__
+
+#include <e32cmn.h>
+
+class TAddressAllocator;
+class DPlatChunkHw;
+class DChunk;
+class TChunkCreateInfo;
+class DMutex;
+
+
+/**
+Responsible for allocating and deallocating chunks which
+are accessible from the PCI bus.
+
+At present there can be only 1 chunk associated with each BAR.
+It would be possible to access more than one chunk per BAR, providing
+the chunks were physically contiguous with each other,
+*/
+class TChunkManager
+	{
+public:
+	TChunkManager(TMappingManager& aMapMan);
+	~TChunkManager();
+	TInt AddChunk(DPlatChunkHw*& aChunk, TInt& aSize, TUint aAttributes, TUint32& aPciAddress);
+	TInt RemoveChunk(DPlatChunkHw* aChunk);
+
+	TInt AddChunk(DChunk*& aChunk, TChunkCreateInfo& aAttributes, TUint aOffset, TUint& aSize, TUint32& aPciAddress);
+	void RemoveChunk(TUint32 aPhysicalAddress);
+
+private:
+	/**
+	Used to keep a record of an allocated chunk
+	*/
+	struct TChunkRecord
+		{
+		TChunkRecord(DPlatChunkHw* aChunk, TInt32 aSize);
+		static TBool ChunkComparator(const TChunkRecord& aKeyRecord, const TChunkRecord& aRecord);
+
+		DPlatChunkHw* iChunk;
+		// DPlayChunkHw do not know the size which has been allocated to them.
+		TInt32 iSize;
+		};
+
+	/**
+	Used to keep a record of a shared chunk
+	*/
+	struct TSCRecord
+		{
+		TSCRecord(DChunk* aChunk, TUint32 aPhysAddr);
+		static TBool ChunkComparator(const TSCRecord& aKeyRecord, const TSCRecord& aRecord);
+
+		DChunk* iChunk;
+		TUint32 iPhysAddr; //we need to remember this as it allows PCI mapping to be freed
+		TBool iMapped; //says whether this chunk is mapped into PCI
+		TInt32 iSize;
+		};
+
+	TInt DoAddChunk(DPlatChunkHw*& aChunk, TInt aSize, TUint aAttributes, TUint32& aPciAddress);
+	TInt CreateChunk(DPlatChunkHw*& aChunk, TInt& aSize, TUint aAttributes);
+	TInt DeleteChunk(DPlatChunkHw* aChunk, TInt aSize);
+
+	TInt DoAddChunk(DChunk*& aChunk, TChunkCreateInfo& aAttributes, TUint aOffset, TUint& aSize, TUint32& aPciAddress);
+	TInt CreateChunk(DChunk*& aChunk, TChunkCreateInfo& aAttributes, TUint aOffset, TUint& aSize, TSCRecord& aRecord);
+
+	typedef DPlatChunkHw* DPlatChunkHwP;
+
+	TMappingManager& iMapMan;
+
+	RArray<TChunkRecord> iChunks;
+	RArray<TSCRecord> iSharedChunks;
+	DMutex* iMutex;
+
+
+	};
+#endif // __CHUNKMAN_H__