sl@0: // Copyright (c) 1996-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of the License "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // f32\sfat32\fat_config.h
sl@0: // FAT fsy configurator
sl@0: // 
sl@0: //
sl@0: 
sl@0: /**
sl@0:  @file
sl@0:  @internalTechnology
sl@0: */
sl@0: 
sl@0: #ifndef FAT_CONFIGURATOR_H
sl@0: #define FAT_CONFIGURATOR_H
sl@0: 
sl@0: #include <f32dbg.h>
sl@0: //-----------------------------------------------------------------------------
sl@0: 
sl@0: /**
sl@0:     This class provides access to the FAT settings in estart.txt file and the interface to 
sl@0:     get these setting to the client (CFatMountCB).
sl@0: */
sl@0: class TFatConfig
sl@0:     {
sl@0:  public:   
sl@0: 
sl@0:     TFatConfig();
sl@0:     void ReadConfig(TInt aDrvNumber, TBool aForceRead = EFalse);
sl@0: 
sl@0:     //-- parameters getters
sl@0:     inline TBool ScanDrvSkipFinalisedVolume() const;
sl@0:     inline TBool FAT32_AsynchMount() const;
sl@0:     inline TBool FAT32_UseFSInfoOnMount() const;
sl@0:     inline TBool FAT32_UseBitSupercache() const;
sl@0: 
sl@0: 
sl@0:     inline TUint32 DirCacheSize() const;
sl@0:     inline TUint32 DirCacheMaxPageSizeLog2() const;
sl@0: 
sl@0:     inline void Fat16FixedCacheParams(TUint32& aRdGrLog2, TUint32& aWrGrLog2) const;
sl@0:     inline void Fat32LruCacheParams(TUint32& aRdGrLog2, TUint32& aWrGrLog2, TUint32& aCacheSize) const;
sl@0:     inline TBool FAT16_UseCleanShutDownBit() const;
sl@0: 
sl@0:     inline TUint32 LeafDirCacheSize() const;
sl@0:     inline TUint32 DynamicDirCacheSizeMin() const;
sl@0:     inline TUint32 DynamicDirCacheSizeMax() const;
sl@0:     inline TUint32 DynamicDirCacheMaxPageSizeLog2() const;
sl@0: 
sl@0:  protected:
sl@0: 
sl@0:     TFatConfig(const TFatConfig&);
sl@0:     TFatConfig& operator=(const TFatConfig&);
sl@0: 
sl@0:     TUint32 ReadUint(const TDesC8& aSection, const TDesC8& aKeyName, TUint32 aDefaultValue) const; 
sl@0: 
sl@0:  private:
sl@0:     
sl@0:     void DumpParameters() const;   
sl@0:     void DoDumpUintParam(const TDesC8& aKeyName, TUint32 aParam) const; 
sl@0: 
sl@0:     void ProcessDirCacheParams(const TDesC8& aSection);
sl@0:     void ProcessFatCacheParams(const TDesC8& aSection);
sl@0:     void ProcessDynamicDirCacheParams(const TDesC8& aSection);
sl@0: 
sl@0:  private:
sl@0:     
sl@0:     TUint32 iInitialised : 1; //-- ETrue if the object is initialised, i.e. ReadConfig() called
sl@0: 
sl@0:     //-- cached FAT parameters, see appropriate methods description
sl@0:     
sl@0:     //-- boolean values
sl@0:     TUint32 iScanDrvSkipFinalisedVolume :1; ///< if 1 ScanDrive will skip properly finalised volumes
sl@0:     TUint32 iFAT32_AsynchMount          :1; ///< if 1 FAT3 Asynchronous mounting is enabled  
sl@0:     TUint32 iFAT32_UseFSInfoOnMount     :1; ///< 1 enables using FSInfo sector on FAT32 volumes
sl@0:     TUint32 iFAT32_UseBitSupercache     :1; ///< 1 enables using FAT32 bit supercache for fast free cluster lookup
sl@0:     TUint32 iFAT16_UseCleanShutDownBit  :1; ///< if 1 "clean shutdown mask" bit in FAT16[1] will be used during volume finalisations.
sl@0: 
sl@0:     //---
sl@0: 
sl@0:     TUint16 iDirCacheSizeKB;                ///< directory cache size, Kbytes
sl@0:     TUint16 iDirCacheMaxPageSizeLog2;       ///< Log2(Max. dir. cache page size)
sl@0: 
sl@0:     TUint16 iFat16FixedCacheReadGrLog2;     ///< Log2(FAT16 fixed cache read granularity)
sl@0:     TUint16 iFat16FixedCacheWriteGrLog2;    ///< Log2(FAT16 fixed cache write granularity)
sl@0: 
sl@0:     TUint16 iFat32LRUCacheSizeKB;           ///< FAT32 LRU cache size, Kbytes
sl@0:     TUint16 iFat32LRUCacheReadGrLog2;       ///< Log2(FAT32 LRU cache read granularity)
sl@0:     TUint16 iFat32LRUCacheWriteGrLog2;      ///< Log2(FAT32 LRU cache write granularity)
sl@0:     
sl@0:     TUint32 iLeafDirCacheSize;              ///< leaf directory cache size, maximum number of most recently visited leaf dirs to be cached
sl@0:     TUint32 iDynamicDirCacheSizeMinKB;      ///< minimum directory cache size, Kbytes
sl@0:     TUint32 iDynamicDirCacheSizeMaxKB;      ///< maximum directory cache size, Kbytes
sl@0:     TUint32 iDynamicDirCacheMaxPageSizeLog2;///< Log2(maximum dynamic dir cache page size)
sl@0: 
sl@0:     };
sl@0: 
sl@0: #include"fat_config.inl"
sl@0: 
sl@0: #endif //FAT_CONFIGURATOR_H
sl@0: 
sl@0: 
sl@0: 
sl@0: 
sl@0: 
sl@0: