1 /*

     2 * Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:  

    15 *

    16 */

    17 

    18 

    19 

    20 #ifndef __MAPMAN_H__

    21 #define __MAPMAN_H__

    22 

    23 #include <e32cmn.h>

    24 

    25 //helper maths functions

    26 TUint32 Clp2(TUint32 aNumber);

    27 TUint32 Log2(TUint32 aNumber);

    28 

    29 class TAddressAllocator;

    30 class DMutex;

    31 

    32 /**

    33 Responsible for creating outbound mappings so that

    34 PCI peripherals can access system memory.

    35 */

    36 class TMappingManager

    37 	{

    38 public:

    39 	TMappingManager(TInt aNumOfBars, TAddressAllocator& aAllocator, TUint32 aBaseAddress);

    40 	~TMappingManager();

    41 	TInt CreateMapping(TUint32 aPhysicalAddress, TInt aSize, TUint32& aPciAddress);

    42 	TInt RemoveMapping(TUint32 aPhysicalAddress);

    43 

    44 	TInt GetPciAddress(TUint32 aPhysicalAddress, TUint32& aPciAddress);

    45 	TInt GetPhysicalAddress(TUint32 aPciAddress, TUint32& aPhysicalAddress);

    46 

    47 private:

    48 	/**

    49 	Associates BAR with an allocated PCI address

    50 	*/

    51 	struct TMapping

    52 		{

    53 		TMapping();

    54 		static TBool UsedCompare(const TMapping& aKeyMapping, const TMapping& aMapping);

    55 		static TBool PhysAddrCompare(const TUint32*, const TMapping& aMapping);

    56 		static TBool ContainsPhysical(const TUint32*, const TMapping& aMapping);

    57 		static TBool ContainsPci(const TUint32*, const TMapping& aMapping);

    58 

    59 		inline TUint32 PciAddress(TUint32 aPhysAddress);

    60 		inline TUint32 PhysAddress(TUint32 aPciAddress);

    61 

    62 		TUint32 iPciAddr;

    63 		TUint32 iPhysAddr;

    64 		TUint32 iSize;

    65 		TBool iUsed;

    66 		};

    67 

    68 	void DoCreateMapping(TInt aBarIndex, TUint32 aPhysicalAddress, TInt& aSize, TUint32& aPciAddress);

    69 

    70 	TAddressAllocator& iAllocator;

    71 	const TInt iNumOfBars;

    72 	const TUint32 iBaseAddress;

    73 

    74 	RArray<TMapping> iMappings;

    75 	DMutex* iMutex;

    76 	};

    77 #endif // __MAPMAN_H__