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1 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of the License "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // f32\sfat\fat_config.inl |
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15 // FAT fsy configurator |
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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 @file |
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21 @internalTechnology |
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22 */ |
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23 |
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24 #ifndef FAT_CONFIGURATOR_INL |
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25 #define FAT_CONFIGURATOR_INL |
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26 |
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27 //----------------------------------------------------------------------------- |
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28 /** |
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29 Meaning of this parameter: |
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30 if not 0, ScanDrive will not run on finalised FAT volume, i.e. that has "CleanShutdown" flag set in FAT[1] by |
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31 proper finalisation. |
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32 See CFatMountCB::ScanDrive(). |
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33 */ |
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34 TBool TFatConfig::ScanDrvSkipFinalisedVolume() const |
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35 { |
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36 ASSERT(iInitialised); |
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37 return iScanDrvSkipFinalisedVolume; |
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38 } |
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39 |
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40 //----------------------------------------------------------------------------- |
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41 /** |
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42 Meaning of this parameter: |
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43 if not 0, enables asynchronous mounting of the FAT32 volumes. |
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44 In particular background FAT32 scan for free clusters. See CAtaFatTable::CountFreeClustersL(). |
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45 */ |
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46 TBool TFatConfig::FAT32_AsynchMount() const |
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47 { |
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48 ASSERT(iInitialised); |
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49 return iFAT32_AsynchMount; |
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50 } |
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51 |
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52 //----------------------------------------------------------------------------- |
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53 /** |
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54 Meaning of this parameter: |
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55 if not 0, enables using FSInfo sector data during FAT32 volumes mounting to determine number of free clusters etc. |
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56 */ |
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57 TBool TFatConfig::FAT32_UseFSInfoOnMount() const |
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58 { |
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59 ASSERT(iInitialised); |
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60 return iFAT32_UseFSInfoOnMount; |
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61 } |
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62 |
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63 //----------------------------------------------------------------------------- |
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64 /** |
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65 Meaning of this parameter: |
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66 if not 0, enables using FAT32 bit supercache that makes free FAT entries lookup faster |
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67 */ |
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68 TBool TFatConfig::FAT32_UseBitSupercache() const |
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69 { |
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70 ASSERT(iInitialised); |
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71 return iFAT32_UseBitSupercache; |
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72 } |
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73 |
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74 //----------------------------------------------------------------------------- |
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75 /** |
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76 Meaning of this parameter: |
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77 Overall FAT directory cache size in bytes |
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78 */ |
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79 TUint32 TFatConfig::DirCacheSize() const |
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80 { |
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81 ASSERT(iInitialised); |
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82 return iDirCacheSizeKB * K1KiloByte; |
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83 } |
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84 |
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85 //----------------------------------------------------------------------------- |
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86 |
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87 /** |
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88 Meaning of this parameter: |
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89 Log2 of the maximal size of the dir. cache page in bytes. (Minimal size will be current cluster size) |
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90 */ |
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91 TUint32 TFatConfig::DirCacheMaxPageSizeLog2() const |
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92 { |
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93 ASSERT(iInitialised); |
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94 return iDirCacheMaxPageSizeLog2; |
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95 } |
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96 |
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97 /** |
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98 Get FAT16 fixed cache parameters |
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99 @param aRdGrLog2 Log2(read granularity) |
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100 @param aWrGrLog2 Log2(write granularity) |
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101 */ |
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102 void TFatConfig::Fat16FixedCacheParams(TUint32& aRdGrLog2, TUint32& aWrGrLog2) const |
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103 { |
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104 ASSERT(iInitialised); |
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105 aRdGrLog2 = iFat16FixedCacheReadGrLog2; |
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106 aWrGrLog2 = iFat16FixedCacheWriteGrLog2; |
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107 } |
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108 /** |
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109 Get FAT32 LRU cache parameters |
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110 @param aRdGrLog2 Log2(read granularity) |
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111 @param aWrGrLog2 Log2(write granularity) |
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112 @param aCacheSize maximal cache size, bytes |
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113 */ |
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114 void TFatConfig::Fat32LruCacheParams(TUint32& aRdGrLog2, TUint32& aWrGrLog2, TUint32& aCacheSize) const |
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115 { |
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116 ASSERT(iInitialised); |
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117 aRdGrLog2 = iFat32LRUCacheReadGrLog2; |
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118 aWrGrLog2 = iFat32LRUCacheWriteGrLog2; |
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119 aCacheSize = iFat32LRUCacheSizeKB * K1KiloByte; |
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120 } |
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121 |
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122 |
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123 /** |
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124 Meaning of this parameter: |
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125 if not 0, "clean shutdown mask" bit in FAT16[1] will be used during volume finalisation. |
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126 Otherwise, FAT16[1] will not be affected during finalisation |
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127 */ |
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128 TBool TFatConfig::FAT16_UseCleanShutDownBit() const |
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129 { |
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130 ASSERT(iInitialised); |
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131 return iFAT16_UseCleanShutDownBit; |
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132 } |
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133 |
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134 |
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135 |
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136 //----------------------------------------------------------------------------- |
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137 /** |
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138 Get leaf dir cache size |
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139 @return leaf dir cache size |
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140 */ |
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141 TUint32 TFatConfig::LeafDirCacheSize() const |
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142 { |
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143 ASSERT(iInitialised); |
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144 return iLeafDirCacheSize; |
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145 } |
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146 |
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147 /** |
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148 get the minimum cache size setting for dynamic dir cache |
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149 @return minimum cache size in bytes |
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150 */ |
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151 TUint32 TFatConfig::DynamicDirCacheSizeMin() const |
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152 { |
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153 ASSERT(iInitialised); |
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154 ASSERT(iDynamicDirCacheSizeMinKB < (KMaxTUint32 >> K1KiloByteLog2)); //check data overflow |
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155 return iDynamicDirCacheSizeMinKB << K1KiloByteLog2; |
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156 } |
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157 |
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158 /** |
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159 get the maximum cache size setting for dynamic dir cache |
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160 @return maximum cache size in bytes |
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161 */ |
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162 TUint32 TFatConfig::DynamicDirCacheSizeMax() const |
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163 { |
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164 ASSERT(iInitialised); |
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165 ASSERT(iDynamicDirCacheSizeMaxKB < (KMaxTUint32 >> K1KiloByteLog2)); //check data overflow |
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166 return iDynamicDirCacheSizeMaxKB << K1KiloByteLog2; |
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167 } |
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168 |
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169 /** |
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170 retrieve the size of the maximal size of the dynamic dir cache page in log2. |
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171 (Minimal size will be current cluster size) |
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172 @return maximum page size in bytes in log2 |
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173 */ |
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174 TUint32 TFatConfig::DynamicDirCacheMaxPageSizeLog2() const |
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175 { |
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176 ASSERT(iInitialised); |
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177 return iDynamicDirCacheMaxPageSizeLog2; |
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178 } |
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179 |
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180 |
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181 #endif //FAT_CONFIGURATOR_INL |
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