1 // Copyright (c) 1996-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of the License "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

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

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 // f32\sfat32\fat_config.h

    15 // FAT fsy configurator

    16 // 

    17 //

    18 

    19 /**

    20  @file

    21  @internalTechnology

    22 */

    23 

    24 //!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

    25 //!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

    26 //!!

    27 //!! WARNING!! DO NOT edit this file !! '\sfat' component is obsolete and is not being used. '\sfat32'replaces it

    28 //!!

    29 //!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

    30 //!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

    31 

    32 

    33 #ifndef FAT_CONFIGURATOR_H

    34 #define FAT_CONFIGURATOR_H

    35 

    36 #include <f32dbg.h>

    37 //-----------------------------------------------------------------------------

    38 

    39 /**

    40     This class provides access to the FAT settings in estart.txt file and the interface to 

    41     get these setting to the client (CFatMountCB).

    42 */

    43 class TFatConfig

    44     {

    45  public:   

    46 

    47     TFatConfig();

    48     void ReadConfig(TInt aDrvNumber, TBool aForceRead = EFalse);

    49 

    50     //-- parameters getters

    51     inline TBool ScanDrvSkipFinalisedVolume() const;

    52     inline TBool FAT32_AsynchMount() const;

    53     inline TBool FAT32_UseFSInfoOnMount() const;

    54     inline TBool FAT32_UseBitSupercache() const;

    55 

    56 

    57     inline TUint32 DirCacheSize() const;

    58     inline TUint32 DirCacheMaxPageSizeLog2() const;

    59 

    60     inline void Fat16FixedCacheParams(TUint32& aRdGrLog2, TUint32& aWrGrLog2) const;

    61     inline void Fat32LruCacheParams(TUint32& aRdGrLog2, TUint32& aWrGrLog2, TUint32& aCacheSize) const;

    62     inline TBool FAT16_UseCleanShutDownBit() const;

    63 

    64     inline TUint32 LeafDirCacheSize() const;

    65     inline TUint32 DynamicDirCacheSizeMin() const;

    66     inline TUint32 DynamicDirCacheSizeMax() const;

    67     inline TUint32 DynamicDirCacheMaxPageSizeLog2() const;

    68 

    69  protected:

    70 

    71     TFatConfig(const TFatConfig&);

    72     TFatConfig& operator=(const TFatConfig&);

    73 

    74     TUint32 ReadUint(const TDesC8& aSection, const TDesC8& aKeyName, TUint32 aDefaultValue) const; 

    75 

    76  private:

    77     

    78     void DumpParameters() const;   

    79     void DoDumpUintParam(const TDesC8& aKeyName, TUint32 aParam) const; 

    80 

    81     void ProcessDirCacheParams(const TDesC8& aSection);

    82     void ProcessFatCacheParams(const TDesC8& aSection);

    83     void ProcessDynamicDirCacheParams(const TDesC8& aSection);

    84 

    85  private:

    86     

    87     TUint32 iInitialised : 1; //-- ETrue if the object is initialised, i.e. ReadConfig() called

    88 

    89     //-- cached FAT parameters, see appropriate methods description

    90     

    91     //-- boolean values

    92     TUint32 iScanDrvSkipFinalisedVolume :1; ///< if 1 ScanDrive will skip properly finalised volumes

    93     TUint32 iFAT32_AsynchMount          :1; ///< if 1 FAT3 Asynchronous mounting is enabled  

    94     TUint32 iFAT32_UseFSInfoOnMount     :1; ///< 1 enables using FSInfo sector on FAT32 volumes

    95     TUint32 iFAT32_UseBitSupercache     :1; ///< 1 enables using FAT32 bit supercache for fast free cluster lookup

    96     TUint32 iFAT16_UseCleanShutDownBit  :1; ///< if 1 "clean shutdown mask" bit in FAT16[1] will be used during volume finalisations.

    97 

    98     //---

    99 

   100     TUint16 iDirCacheSizeKB;                ///< directory cache size, Kbytes

   101     TUint16 iDirCacheMaxPageSizeLog2;       ///< Log2(Max. dir. cache page size)

   102 

   103     TUint16 iFat16FixedCacheReadGrLog2;     ///< Log2(FAT16 fixed cache read granularity)

   104     TUint16 iFat16FixedCacheWriteGrLog2;    ///< Log2(FAT16 fixed cache write granularity)

   105 

   106     TUint16 iFat32LRUCacheSizeKB;           ///< FAT32 LRU cache size, Kbytes

   107     TUint16 iFat32LRUCacheReadGrLog2;       ///< Log2(FAT32 LRU cache read granularity)

   108     TUint16 iFat32LRUCacheWriteGrLog2;      ///< Log2(FAT32 LRU cache write granularity)

   109     

   110     TUint32 iLeafDirCacheSize;              ///< leaf directory cache size, maximum number of most recently visited leaf dirs to be cached

   111     TUint32 iDynamicDirCacheSizeMinKB;      ///< minimum directory cache size, Kbytes

   112     TUint32 iDynamicDirCacheSizeMaxKB;      ///< maximum directory cache size, Kbytes

   113     TUint32 iDynamicDirCacheMaxPageSizeLog2;///< Log2(maximum dynamic dir cache page size)

   114 

   115     };

   116 

   117 #include"fat_config.inl"

   118 

   119 #endif //FAT_CONFIGURATOR_H

   120 

   121 

   122 

   123 

   124 

   125