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