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1 /* |
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2 * Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * |
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16 */ |
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17 |
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18 |
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19 |
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20 #ifndef __MAPMAN_H__ |
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21 #define __MAPMAN_H__ |
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22 |
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23 #include <e32cmn.h> |
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24 |
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25 //helper maths functions |
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26 TUint32 Clp2(TUint32 aNumber); |
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27 TUint32 Log2(TUint32 aNumber); |
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28 |
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29 class TAddressAllocator; |
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30 class DMutex; |
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31 |
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32 /** |
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33 Responsible for creating outbound mappings so that |
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34 PCI peripherals can access system memory. |
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35 */ |
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36 class TMappingManager |
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37 { |
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38 public: |
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39 TMappingManager(TInt aNumOfBars, TAddressAllocator& aAllocator, TUint32 aBaseAddress); |
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40 ~TMappingManager(); |
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41 TInt CreateMapping(TUint32 aPhysicalAddress, TInt aSize, TUint32& aPciAddress); |
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42 TInt RemoveMapping(TUint32 aPhysicalAddress); |
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43 |
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44 TInt GetPciAddress(TUint32 aPhysicalAddress, TUint32& aPciAddress); |
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45 TInt GetPhysicalAddress(TUint32 aPciAddress, TUint32& aPhysicalAddress); |
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46 |
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47 private: |
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48 /** |
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49 Associates BAR with an allocated PCI address |
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50 */ |
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51 struct TMapping |
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52 { |
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53 TMapping(); |
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54 static TBool UsedCompare(const TMapping& aKeyMapping, const TMapping& aMapping); |
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55 static TBool PhysAddrCompare(const TUint32*, const TMapping& aMapping); |
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56 static TBool ContainsPhysical(const TUint32*, const TMapping& aMapping); |
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57 static TBool ContainsPci(const TUint32*, const TMapping& aMapping); |
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58 |
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59 inline TUint32 PciAddress(TUint32 aPhysAddress); |
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60 inline TUint32 PhysAddress(TUint32 aPciAddress); |
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61 |
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62 TUint32 iPciAddr; |
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63 TUint32 iPhysAddr; |
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64 TUint32 iSize; |
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65 TBool iUsed; |
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66 }; |
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67 |
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68 void DoCreateMapping(TInt aBarIndex, TUint32 aPhysicalAddress, TInt& aSize, TUint32& aPciAddress); |
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69 |
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70 TAddressAllocator& iAllocator; |
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71 const TInt iNumOfBars; |
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72 const TUint32 iBaseAddress; |
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73 |
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74 RArray<TMapping> iMappings; |
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75 DMutex* iMutex; |
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76 }; |
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77 #endif // __MAPMAN_H__ |