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1 /* |
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2 * Copyright (c) 2010 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 the License "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 - contribution. |
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11 * |
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12 * Contributors: |
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13 * Gareth Long - Symbian Foundation |
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14 * |
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15 * Description: Minimalistic non volatile memory driver |
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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 #include "locmedia.h" |
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21 #include "platform.h" |
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22 #include "\sf\adaptation\beagleboard\omap3530\beagleboard\inc\variantmediadef.h" |
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23 #include "beagle_medstaticrd.h" |
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24 //#include "syborg.h" |
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25 |
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26 #define NVMEM1_DRIVENAME "STATICRD" |
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27 #define NVMEM1_DRIVECOUNT 1 |
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28 #define NVMEM1_DRIVELIST 1 |
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29 #define NVMEM1_NUMMEDIA 1 |
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30 |
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31 _LIT(KNVMemPddName, "Media.MEDTATICRD"); |
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32 _LIT(KNVMemDriveName,NVMEM1_DRIVENAME); |
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33 |
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34 class DPhysicalDeviceMediaStaticRD : public DPhysicalDevice |
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35 { |
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36 public: |
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37 DPhysicalDeviceMediaStaticRD(); |
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38 public: |
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39 // Implementing the interface |
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40 virtual TInt Install(); |
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41 virtual void GetCaps(TDes8& aDes) const; |
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42 virtual TInt Create(DBase*& aChannel, TInt aMediaId, const TDesC8* anInfo, const TVersion& aVer); |
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43 virtual TInt Validate(TInt aDeviceType, const TDesC8* anInfo, const TVersion& aVer); |
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44 virtual TInt Info(TInt aFunction, TAny* a1); |
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45 }; |
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46 |
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47 class DMediaDriverStaticRD : public DMediaDriver |
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48 { |
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49 public: |
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50 DMediaDriverStaticRD(TInt aMediaId); |
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51 public: |
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52 // Implementing the interface |
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53 virtual TInt Request(TLocDrvRequest& aRequest); |
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54 virtual void Disconnect(DLocalDrive* aLocalDrive, TThreadMessage* aMsg); |
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55 virtual TInt PartitionInfo(TPartitionInfo &anInfo); |
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56 virtual void NotifyPowerDown(); |
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57 virtual void NotifyEmergencyPowerDown(); |
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58 public: |
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59 void CompleteRequest(TInt aReason); |
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60 TInt DoCreate(TInt aMediaId); |
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61 TInt Caps(TLocDrvRequest& aRequest); |
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62 TInt Read(); |
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63 TInt Write(); |
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64 TInt Format(); |
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65 static void TransactionLaunchDfc(TAny* aMediaDriver); |
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66 void DoTransactionLaunchDfc(); |
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67 static void SessionEndDfc(TAny* aMediaDriver); |
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68 void DoSessionEndDfc(); |
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69 TUint32 GetNVMemSize( void ); |
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70 |
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71 public: |
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72 TUint32 iLatestTransferSectorCount; |
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73 TDfc iSessionEndDfc; |
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74 |
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75 private: |
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76 TInt ContinueTransaction( TUint32 aTransactionSectorOffset, TUint32 aTransactionSectorCount, TUint32 aDirection ); |
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77 static void Isr(TAny* aPtr); |
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78 |
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79 private: |
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80 TLocDrvRequest* iCurrentRequest; // Current Request |
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81 Int64 iTotalLength; |
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82 Int64 iProsessedLength; |
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83 Int64 iPos; |
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84 TPhysAddr iTransferBufferPhys; |
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85 TUint8* iTransferBufferLin; |
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86 TUint8* iDiscBufferLin; |
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87 TUint32 iHead; |
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88 TUint32 iTail; |
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89 TUint32 iSplitted; |
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90 TUint32 iAlignmentOverhead; |
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91 TBool iReadModifyWrite; |
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92 TDfc iTransactionLaunchDfc; |
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93 }; |
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94 |
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95 DPhysicalDeviceMediaStaticRD::DPhysicalDeviceMediaStaticRD() |
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96 // |
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97 // Constructor |
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98 // |
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99 { |
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100 __DEBUG_PRINT(">DPhysicalDeviceMediaStaticRD::DPhysicalDeviceMediaStaticRD"); |
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101 iUnitsMask=0x1; |
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102 iVersion=TVersion(KMediaDriverInterfaceMajorVersion,KMediaDriverInterfaceMinorVersion,KMediaDriverInterfaceBuildVersion); |
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103 } |
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104 |
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105 TInt DPhysicalDeviceMediaStaticRD::Install() |
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106 // |
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107 // Install the Internal NVMem PDD. |
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108 // |
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109 { |
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110 __DEBUG_PRINT("DPhysicalDeviceMediaStaticRD::Install()"); |
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111 return SetName(&KNVMemPddName); |
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112 } |
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113 |
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114 void DPhysicalDeviceMediaStaticRD::GetCaps(TDes8& /*aDes*/) const |
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115 // |
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116 // Return the media drivers capabilities. |
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117 // |
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118 { |
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119 __DEBUG_PRINT("DPhysicalDeviceMediaStaticRD::GetCaps()"); |
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120 } |
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121 |
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122 TInt DPhysicalDeviceMediaStaticRD::Create(DBase*& aChannel, TInt aMediaId, const TDesC8* /* anInfo */,const TVersion &aVer) |
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123 // |
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124 // Create an Internal Ram media driver. |
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125 // |
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126 { |
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127 __DEBUG_PRINT("DPhysicalDeviceMediaStaticRD::Create()"); |
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128 if (!Kern::QueryVersionSupported(iVersion,aVer)) |
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129 return KErrNotSupported; |
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130 TInt r=KErrNoMemory; |
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131 DMediaDriverStaticRD* pD=new DMediaDriverStaticRD(aMediaId); |
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132 aChannel=pD; |
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133 if (pD) |
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134 { |
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135 r=pD->DoCreate(aMediaId); |
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136 } |
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137 if( r==KErrNone ) |
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138 { |
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139 pD->OpenMediaDriverComplete(KErrNone); |
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140 } |
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141 |
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142 return r; |
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143 } |
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144 |
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145 TInt DPhysicalDeviceMediaStaticRD::Validate(TInt aDeviceType, const TDesC8* /*anInfo*/, const TVersion& aVer) |
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146 { |
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147 __DEBUG_PRINT("DPhysicalDeviceMediaStaticRD::Validate()"); |
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148 if (!Kern::QueryVersionSupported(iVersion,aVer)) |
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149 return KErrNotSupported; |
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150 if (aDeviceType!=EFixedMedia1) |
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151 return KErrNotSupported; |
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152 return KErrNone; |
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153 } |
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154 |
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155 TInt DPhysicalDeviceMediaStaticRD::Info(TInt aFunction, TAny*) |
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156 // |
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157 // Return the priority of this media driver |
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158 // |
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159 { |
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160 __DEBUG_PRINT("DPhysicalDeviceMediaStaticRD::Info()"); |
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161 if (aFunction==EPriority) |
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162 return KMediaDriverPriorityNormal; |
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163 return KErrNotSupported; |
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164 } |
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165 |
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166 DMediaDriverStaticRD::DMediaDriverStaticRD(TInt aMediaId) |
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167 // |
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168 // Constructor. |
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169 // |
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170 : DMediaDriver(aMediaId), |
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171 iSessionEndDfc(DMediaDriverStaticRD::SessionEndDfc, this, 1), |
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172 iTransferBufferPhys(0), |
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173 iTransactionLaunchDfc(DMediaDriverStaticRD::TransactionLaunchDfc, this, KMaxDfcPriority) |
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174 { |
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175 __DEBUG_PRINT("DMediaDriverStaticRD::DMediaDriverStaticRD()"); |
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176 } |
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177 |
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178 TInt DMediaDriverStaticRD::DoCreate(TInt /*aMediaId*/) |
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179 // |
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180 // Create the media driver. |
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181 // |
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182 { |
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183 __DEBUG_PRINT(">DMediaDriverStaticRD::DoCreate"); |
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184 TInt r = KErrNone; |
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185 // Inform our size |
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186 Int64 size=GetNVMemSize()<<KDiskSectorShift; |
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187 if( size<=0 ) |
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188 { |
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189 Kern::Fault("DMediaDriverStaticRD zero size nv memory array", 0); |
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190 } |
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191 SetTotalSizeInBytes(size); |
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192 // Some dfc initialization |
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193 if( r==KErrNone ) |
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194 { |
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195 iSessionEndDfc.SetDfcQ( this->iPrimaryMedia->iDfcQ ); |
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196 iTransactionLaunchDfc.SetDfcQ( this->iPrimaryMedia->iDfcQ ); |
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197 } |
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198 // Create our piece of physically contiguous transfer buffer. |
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199 r = Epoc::AllocPhysicalRam( KNVMemTransferBufferSize, iTransferBufferPhys ); |
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200 if( r != KErrNone ) |
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201 { |
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202 Kern::Fault("DMediaDriverStaticRD Allocate Ram %d",r); |
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203 } |
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204 |
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205 DPlatChunkHw* bufChunk = NULL; |
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206 DPlatChunkHw* bufChunk2 = NULL; |
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207 |
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208 // Create HW Memory Chunk |
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209 r = DPlatChunkHw::New( bufChunk, iTransferBufferPhys, KNVMemTransferBufferSize, EMapAttrUserRw | EMapAttrFullyBlocking ); |
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210 |
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211 if( r != KErrNone ) |
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212 { |
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213 // Check Physical Memory |
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214 if( iTransferBufferPhys ) |
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215 { |
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216 // Free Physical Memory |
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217 Epoc::FreePhysicalRam( iTransferBufferPhys, KNVMemTransferBufferSize ); |
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218 } |
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219 Kern::Fault("DMediaDriverStaticRD error in creating transfer buffer", r); |
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220 } |
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221 |
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222 |
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223 // Set Main Buffer Pointer |
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224 iTransferBufferLin = reinterpret_cast<TUint8*>(bufChunk->LinearAddress()); |
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225 |
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226 |
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227 |
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228 // Create HW Memory Chunk for drive image |
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229 r = DPlatChunkHw::New( bufChunk2, 0x81000000, 0x1000000, EMapAttrUserRw | EMapAttrFullyBlocking ); |
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230 if( r != KErrNone ) |
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231 { |
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232 Kern::Fault("DMediaDriverStaticRD error in creating disc image linear address", r); |
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233 } |
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234 |
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235 |
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236 // Set Main Buffer Pointer |
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237 iDiscBufferLin = reinterpret_cast<TUint8*>(bufChunk2->LinearAddress()); |
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238 |
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239 |
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240 // Inform "hardware" about the shared memory |
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241 //WriteReg( KHwNVMemoryDevice, R_NVMEM_SHARED_MEMORY_BASE, iTransferBufferPhys ); |
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242 //WriteReg( KHwNVMemoryDevice, R_NVMEM_SHARED_MEMORY_SIZE, KNVMemTransferBufferSize ); |
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243 //WriteReg( KHwNVMemoryDevice, R_NVMEM_ENABLE, 1 ); |
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244 |
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245 // Set up interrupt service |
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246 //r = Interrupt::Bind( EIntNVMemoryDevice, Isr, this ); |
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247 //Interrupt::Enable( EIntNVMemoryDevice ); |
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248 |
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249 |
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250 __DEBUG_PRINT("<DMediaDriverStaticRD::DoCreate %d", r); |
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251 return(r); |
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252 } |
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253 |
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254 TInt DMediaDriverStaticRD::Request(TLocDrvRequest& m) |
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255 { |
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256 TInt request=m.Id(); |
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257 __DEBUG_PRINT(">DMediaDriverStaticRD::Request %d",request); |
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258 TInt r=KErrNone; |
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259 |
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260 // Requests that can be handled synchronously |
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261 if( request == DLocalDrive::ECaps ) |
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262 { |
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263 r=Caps(m); |
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264 return r; |
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265 } |
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266 |
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267 // All other requests must be deferred if a request is currently in progress |
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268 if (iCurrentRequest) |
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269 { |
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270 // a request is already in progress, so hold on to this one |
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271 r = KMediaDriverDeferRequest; |
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272 } |
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273 else |
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274 { |
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275 |
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276 iCurrentRequest=&m; |
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277 iProsessedLength = 0; |
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278 iHead = 0; |
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279 iTail = 0; |
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280 iSplitted = 0; |
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281 iAlignmentOverhead = 0; |
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282 |
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283 iPos = m.Pos(); |
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284 iTotalLength = m.Length(); |
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285 |
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286 |
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287 __DEBUG_PRINT(">DMediaDriverStaticRD::Request pos:0x%lx len:0x%lx", iPos, iTotalLength); |
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288 if( iTotalLength<0 || iPos<0 ) |
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289 { |
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290 Kern::Fault("DMediaDriverStaticRD::Request: illegal access!", 0); |
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291 } |
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292 // Handle unaligned operations |
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293 iHead = iPos % KDiskSectorSize; |
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294 TUint32 tailAlignment = ((iHead + iTotalLength) % KDiskSectorSize); |
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295 if( tailAlignment ) |
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296 { |
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297 iTail = KDiskSectorSize - tailAlignment; |
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298 } |
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299 |
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300 iSplitted = (iTotalLength + iHead + iTail) / KNVMemTransferBufferSize; |
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301 |
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302 __DEBUG_PRINT(">DMediaDriverStaticRD::Request head: %d tail: %d splitted: %d\n", iHead, iTail, iSplitted ); |
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303 __DEBUG_PRINT(">DMediaDriverStaticRD::Request partitionlen: %lx", iCurrentRequest->Drive()->iPartitionLen ); |
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304 |
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305 if( (iTotalLength + iPos) > iCurrentRequest->Drive()->iPartitionLen ) |
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306 { |
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307 Kern::Fault("DMediaDriverStaticRD::Request: Access over partition boundary!", 0); |
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308 } |
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309 if( iTotalLength > KMaxTInt32 ) |
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310 { |
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311 Kern::Fault("DMediaDriverStaticRD::Request: Access length overflow!", 0); |
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312 } |
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313 switch (request) |
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314 { |
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315 case DLocalDrive::ERead: |
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316 case DLocalDrive::EWrite: |
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317 case DLocalDrive::EFormat: |
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318 __DEBUG_PRINT("DMediaDriverStaticRD::Request iTransactionLaunchDfc.Enque()>"); |
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319 iTransactionLaunchDfc.Enque(); |
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320 __DEBUG_PRINT("DMediaDriverStaticRD::Request iTransactionLaunchDfc.Enque()<"); |
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321 break; |
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322 case DLocalDrive::EEnlarge: |
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323 case DLocalDrive::EReduce: |
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324 default: |
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325 r=KErrNotSupported; |
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326 break; |
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327 } |
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328 } |
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329 |
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330 __DEBUG_PRINT("<DMediaDriverStaticRD::Request %d",r); |
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331 return r; |
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332 } |
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333 |
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334 void DMediaDriverStaticRD::CompleteRequest(TInt aReason) |
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335 // |
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336 // completes the request which is being currently processed |
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337 // |
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338 { |
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339 __DEBUG_PRINT("DMediaDriverStaticRD::CompleteRequest() reason: %d", aReason); |
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340 TLocDrvRequest* pR=iCurrentRequest; |
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341 if (pR) |
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342 { |
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343 iCurrentRequest=NULL; |
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344 DMediaDriver::Complete(*pR,aReason); |
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345 } |
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346 } |
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347 |
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348 void DMediaDriverStaticRD::Disconnect( DLocalDrive* aLocalDrive, TThreadMessage* aMsg ) |
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349 { |
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350 __DEBUG_PRINT(">DMediaDriverStaticRD::Disconnect()"); |
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351 // Complete using the default implementation |
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352 DMediaDriver::Disconnect(aLocalDrive, aMsg); |
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353 __DEBUG_PRINT("<DMediaDriverStaticRD::Disconnect()"); |
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354 } |
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355 |
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356 void DMediaDriverStaticRD::NotifyPowerDown() |
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357 { |
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358 __DEBUG_PRINT("DMediaDriverStaticRD::NotifyPowerDown()"); |
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359 // no action required |
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360 } |
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361 |
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362 void DMediaDriverStaticRD::NotifyEmergencyPowerDown() |
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363 { |
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364 __DEBUG_PRINT("DMediaDriverStaticRD::NotifyEmergencyPowerDown()"); |
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365 // no action required |
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366 } |
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367 |
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368 TInt DMediaDriverStaticRD::Caps(TLocDrvRequest& m) |
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369 { |
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370 __DEBUG_PRINT("DMediaDriverStaticRD::Caps()"); |
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371 TLocalDriveCapsV6& caps=*(TLocalDriveCapsV6*)m.RemoteDes(); |
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372 caps.iType=EMediaHardDisk; |
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373 caps.iConnectionBusType=EConnectionBusInternal; |
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374 caps.iDriveAtt=KDriveAttLocal|KDriveAttInternal; |
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375 caps.iMediaAtt=KMediaAttFormattable; |
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376 caps.iFileSystemId=KDriveFileSysFAT; |
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377 caps.iPartitionType=KPartitionTypeFAT16; |
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378 caps.iSize=m.Drive()->iPartitionLen; |
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379 caps.iHiddenSectors=0; |
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380 caps.iEraseBlockSize = KNVMemTransferBufferSize; |
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381 caps.iBlockSize=KDiskSectorSize; |
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382 caps.iMaxBytesPerFormat = KNVMemTransferBufferSize; |
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383 |
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384 return KErrCompletion; |
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385 } |
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386 |
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387 TInt DMediaDriverStaticRD::Read() |
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388 { |
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389 __DEBUG_PRINT(">DMediaDriverStaticRD::Read() pos: %lx, size: %lx", iPos, iTotalLength); |
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390 // Set our sector offset |
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391 TUint32 transactionSectorOffset = (TUint32)(iPos / KDiskSectorSize); |
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392 TUint32 transactionLength = 0; |
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393 TUint32 transactionDirection = NVMEM_TRANSACTION_READ; |
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394 // Do we have an operation longer than our shared memory? |
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395 if( iSplitted > 0 ) |
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396 { |
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397 transactionLength = KNVMemTransferBufferSize; |
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398 } |
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399 else |
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400 { |
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401 // Do the whole operation in one go since we have enough room in our memory |
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402 transactionLength = I64LOW(iTotalLength); |
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403 // Read the "broken" tail sector |
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404 if( iTail ) |
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405 { |
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406 transactionLength += iTail; |
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407 iAlignmentOverhead += iTail; |
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408 } |
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409 } |
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410 // Read the "broken" head sector |
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411 if( iHead > 0 ) |
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412 { |
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413 transactionLength += iHead; |
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414 iAlignmentOverhead += iHead; |
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415 } |
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416 |
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417 // We should be ok to continue |
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418 ContinueTransaction( transactionSectorOffset, transactionLength/KDiskSectorSize, transactionDirection ); |
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419 __DEBUG_PRINT("<DMediaDriverStaticRD::Read()"); |
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420 return KErrNone; |
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421 } |
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422 |
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423 TInt DMediaDriverStaticRD::Write() |
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424 { |
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425 __DEBUG_PRINT("DMediaDriverStaticRD::Write() pos: 0x%lx, size: 0x%lx", iPos, iTotalLength); |
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426 TInt r = KErrNone; |
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427 // Set our sector offset |
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428 TUint32 transactionSectorOffset = (TUint32)(iPos / KDiskSectorSize); |
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429 TUint32 transactionLength = 0; |
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430 TUint32 transactionDirection = NVMEM_TRANSACTION_WRITE; |
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431 // Do we have an operation longer than our shared memory? |
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432 if( iSplitted > 0 ) |
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433 { |
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434 transactionLength = KNVMemTransferBufferSize; |
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435 } |
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436 else |
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437 { |
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438 // Do the whole operation in one go since we have enough room in our memory |
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439 transactionLength = I64LOW(iTotalLength); |
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440 if( iTail ) |
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441 { |
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442 iReadModifyWrite = ETrue; |
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443 // Read the "broken" tail sector |
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444 transactionLength += iTail; |
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445 iAlignmentOverhead += iTail; |
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446 } |
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447 } |
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448 // Is there a need to read modify write the "broken" head sector of the operation |
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449 if( iHead > 0 ) |
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450 { |
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451 iReadModifyWrite = ETrue; |
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452 // If splitted operation we only need the broken sector |
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453 if( iSplitted > 0 ) |
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454 { |
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455 transactionLength = KDiskSectorSize; |
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456 iAlignmentOverhead += iHead; |
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457 } |
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458 else |
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459 { |
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460 // Read the "broken" head sector in addition to everything else |
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461 transactionLength += iHead; |
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462 iAlignmentOverhead += iHead; |
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463 } |
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464 } |
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465 |
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466 // Was there a need to read-modify before writing |
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467 if( iReadModifyWrite ) |
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468 { |
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469 transactionDirection = NVMEM_TRANSACTION_READ; |
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470 } |
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471 else |
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472 { |
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473 // Handle format here |
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474 if( iCurrentRequest->Id() == DLocalDrive::EFormat ) |
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475 { |
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476 // Not much handling just flow through since we have filled the shared memory with zeroes already |
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477 } |
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478 else |
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479 { |
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480 // Read from client |
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481 TPtr8 targetDescriptor(iTransferBufferLin, transactionLength); |
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482 r = iCurrentRequest->ReadRemote(&targetDescriptor,0); |
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483 } |
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484 } |
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485 |
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486 // We should be ok to continue |
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487 ContinueTransaction( transactionSectorOffset, transactionLength/KDiskSectorSize, transactionDirection ); |
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488 |
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489 return r; |
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490 } |
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491 |
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492 |
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493 TInt DMediaDriverStaticRD::Format() |
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494 { |
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495 __DEBUG_PRINT("DMediaDriverStaticRD::Format() pos: 0x%lx, size: 0x%lx", iPos, iTotalLength); |
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496 memset( iTransferBufferLin, 0x00, KNVMemTransferBufferSize ); |
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497 // Stop the nonsense here. Write operations should be used for partial sector data removal operations |
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498 if( iHead > 0 || iTail > 0 ) |
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499 { |
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500 Kern::Fault("DMediaDriverStaticRD::Format: alignment violation!", 0); |
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501 } |
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502 Write(); |
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503 // DoTransaction( m, NVMEM_TRANSACTION_WRITE ); |
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504 return KErrNone; |
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505 } |
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506 |
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507 TInt DMediaDriverStaticRD::ContinueTransaction( TUint32 aTransactionSectorOffset, TUint32 aTransactionSectorCount, TUint32 aTransactionDirection ) |
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508 { |
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509 __DEBUG_PRINT("DMediaDriverStaticRD::ContinueTransaction() sectoroffset: %d, sectorcount: %d, direction: %d", aTransactionSectorOffset, aTransactionSectorCount, aTransactionDirection); |
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510 if( aTransactionDirection != NVMEM_TRANSACTION_UNDEFINED ) |
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511 { |
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512 //WriteReg( KHwNVMemoryDevice, R_NVMEM_TRANSACTION_OFFSET, aTransactionSectorOffset ); |
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513 //WriteReg( KHwNVMemoryDevice, R_NVMEM_TRANSACTION_SIZE, aTransactionSectorCount ); |
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514 //WriteReg( KHwNVMemoryDevice, R_NVMEM_TRANSACTION_DIRECTION, aTransactionDirection ); |
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515 //WriteReg( KHwNVMemoryDevice, R_NVMEM_TRANSACTION_EXECUTE, aTransactionDirection ); |
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516 if ( aTransactionDirection == NVMEM_TRANSACTION_WRITE ) |
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517 { |
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518 memcpy( (TAny *)(iDiscBufferLin+(aTransactionSectorOffset<<9)), iTransferBufferLin, aTransactionSectorCount*512 ); |
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519 } |
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520 else if ( aTransactionDirection == NVMEM_TRANSACTION_READ ) |
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521 { |
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522 memcpy( iTransferBufferLin, (TAny *)(iDiscBufferLin+(aTransactionSectorOffset<<9)), aTransactionSectorCount*512 ); |
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523 } |
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524 iLatestTransferSectorCount = aTransactionSectorCount; |
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525 Isr(this); // terrible hack, we've yransferred all the sectors and now we pretend to generate an interrupt |
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526 } |
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527 else |
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528 { |
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529 Kern::Fault("DMediaDriverStaticRD::ContinueTransaction: Undefined transaction!", 0); |
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530 } |
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531 return KErrNone; |
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532 } |
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533 |
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534 |
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535 TInt DMediaDriverStaticRD::PartitionInfo(TPartitionInfo& anInfo) |
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536 // |
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537 // Return partition information on the media. |
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538 // |
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539 { |
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540 __DEBUG_PRINT("DMediaDriverStaticRD::PartitionInfo()"); |
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541 anInfo.iPartitionCount=1; |
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542 anInfo.iEntry[0].iPartitionBaseAddr=0; |
|
543 anInfo.iEntry[0].iPartitionLen=anInfo.iMediaSizeInBytes=TotalSizeInBytes(); |
|
544 anInfo.iEntry[0].iPartitionType=KPartitionTypeFAT16; |
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545 return KErrCompletion; |
|
546 } |
|
547 |
|
548 void DMediaDriverStaticRD::TransactionLaunchDfc(TAny* aMediaDriver) |
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549 { |
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550 static_cast<DMediaDriverStaticRD*>(aMediaDriver)->DoTransactionLaunchDfc(); |
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551 } |
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552 |
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553 void DMediaDriverStaticRD::DoTransactionLaunchDfc() |
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554 { |
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555 __DEBUG_PRINT(">DMediaDriverStaticRD::DoTransactionLaunchDfc()"); |
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556 TInt request = iCurrentRequest->Id(); |
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557 TInt r(KErrNone); |
|
558 switch (request) |
|
559 { |
|
560 case DLocalDrive::ERead: |
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561 r=Read(); |
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562 break; |
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563 case DLocalDrive::EWrite: |
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564 r=Write(); |
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565 break; |
|
566 case DLocalDrive::EFormat: |
|
567 r=Format(); |
|
568 break; |
|
569 case DLocalDrive::EEnlarge: |
|
570 case DLocalDrive::EReduce: |
|
571 default: |
|
572 r=KErrNotSupported; |
|
573 break; |
|
574 } |
|
575 if( r != KErrNone ) |
|
576 { |
|
577 // TODO some proper error handling here |
|
578 } |
|
579 __DEBUG_PRINT("<MediaDriverStaticRD::DoTransactionLaunchDfc %d",r); |
|
580 } |
|
581 |
|
582 void DMediaDriverStaticRD::SessionEndDfc(TAny* aMediaDriver) |
|
583 { |
|
584 static_cast<DMediaDriverStaticRD*>(aMediaDriver)->DoSessionEndDfc(); |
|
585 } |
|
586 |
|
587 void DMediaDriverStaticRD::DoSessionEndDfc() |
|
588 { |
|
589 __DEBUG_PRINT(">DMediaDriverStaticRD::DoSessionEndDfc()"); |
|
590 TInt r = KErrNone; |
|
591 // Check that we have a request in process |
|
592 if( iCurrentRequest ) |
|
593 { |
|
594 // Transaction variables |
|
595 TUint32 transactionSectorOffset(0); |
|
596 TUint32 transactionLength(0); |
|
597 TUint32 transactionDirection( NVMEM_TRANSACTION_UNDEFINED ); |
|
598 // How much did we actually transfer? |
|
599 TUint32 latestTransferSize = (iLatestTransferSectorCount * KDiskSectorSize); |
|
600 __DEBUG_PRINT("DMediaDriverStaticRD::DoSessionEndDfc() latestTransferSize: %d", latestTransferSize ); |
|
601 // Subtract alignment overhead |
|
602 latestTransferSize = latestTransferSize - iAlignmentOverhead; |
|
603 // For decision whether the buffer is ready for operation already |
|
604 TBool bufferReady(EFalse); |
|
605 // For decision whether we have finished the latest request |
|
606 TBool sessionComplete(EFalse); |
|
607 |
|
608 // Was there a read-modify-write (RWM) for which we need to do some buffer manipulation before proceeding? |
|
609 // Note that in case of format we triggered to alignment violation in earlier method already and can not enter to following |
|
610 // condition when there is a format operation going on |
|
611 if( iReadModifyWrite ) |
|
612 { |
|
613 bufferReady = ETrue; |
|
614 iReadModifyWrite = EFalse; |
|
615 // Was it a splitted operation for which we only need to take care of the broken head sector. |
|
616 if( iSplitted > 0 ) |
|
617 { |
|
618 // We have a sector here here filled with data from mass memory. Modify with client data. |
|
619 __DEBUG_PRINT("DMediaDriverStaticRD::DoSessionEndDfc() readremote splitted: %d head: %d", latestTransferSize, iHead ); |
|
620 TPtr8 targetDescriptor(&iTransferBufferLin[iHead], KNVMemTransferBufferSize - iHead); |
|
621 r = iCurrentRequest->ReadRemote(&targetDescriptor,0); |
|
622 } |
|
623 // Else we need to take care of both head and tail |
|
624 else |
|
625 { |
|
626 // We have a piece of data read from mass memory. Modify with client data. |
|
627 __DEBUG_PRINT("DMediaDriverStaticRD::DoSessionEndDfc() readremote: %d head: %d", I64LOW(iTotalLength - iProsessedLength), iHead ); |
|
628 TPtr8 targetDescriptor(&iTransferBufferLin[iHead], I64LOW(iTotalLength - iProsessedLength)); |
|
629 r = iCurrentRequest->ReadRemote(&targetDescriptor,0); |
|
630 // latestTransferSize -= (KDiskSectorSize - iTail); |
|
631 iTail = 0; |
|
632 } |
|
633 } |
|
634 else |
|
635 { |
|
636 // Overhead is processed when we enter here |
|
637 iAlignmentOverhead = 0; |
|
638 // Update position |
|
639 iPos += latestTransferSize; |
|
640 // Save the information on how many bytes we transferred already |
|
641 iProsessedLength += latestTransferSize; |
|
642 // Update the splitted information. We don't take head into account here anymore since it is already taken care of |
|
643 iSplitted = (iTotalLength - iProsessedLength + iTail) / KNVMemTransferBufferSize; |
|
644 // Check if we have done already |
|
645 if( iProsessedLength >= iTotalLength ) |
|
646 { |
|
647 // If this was the final transfer for this request let's take tail into account as well (if not taken already) |
|
648 // iProsessedLength -= iTail; |
|
649 // latestTransferSize -= iTail; |
|
650 if( iProsessedLength > iTotalLength ) |
|
651 { |
|
652 Kern::Fault("DMediaDriverStaticRD: Illegal transfer operation!", 0); |
|
653 } |
|
654 sessionComplete = ETrue; |
|
655 } |
|
656 } |
|
657 |
|
658 TInt request = iCurrentRequest->Id(); |
|
659 |
|
660 // Set our sector offset |
|
661 transactionSectorOffset = (TUint32)(iPos / KDiskSectorSize); |
|
662 |
|
663 if( bufferReady ) |
|
664 { |
|
665 // Write as much as we read in RMW operation |
|
666 transactionLength = (iLatestTransferSectorCount * KDiskSectorSize); |
|
667 } |
|
668 else |
|
669 { |
|
670 // Do we have an operation longer than our shared memory? |
|
671 if( iSplitted > 0 ) |
|
672 { |
|
673 transactionLength = KNVMemTransferBufferSize; |
|
674 } |
|
675 else |
|
676 { |
|
677 // Do the whole operation in one go since we have enough room in our memory |
|
678 transactionLength = I64LOW(iTotalLength - iProsessedLength); |
|
679 // Read the "broken" tail sector |
|
680 if( iTail > 0 && request == DLocalDrive::EWrite ) |
|
681 { |
|
682 iReadModifyWrite = ETrue; |
|
683 // Read the "broken" tail sector |
|
684 transactionLength += iTail; |
|
685 iAlignmentOverhead = iTail; |
|
686 } |
|
687 } |
|
688 } |
|
689 |
|
690 // Was there a need to read-modify before writing |
|
691 if( iReadModifyWrite ) |
|
692 { |
|
693 transactionDirection = NVMEM_TRANSACTION_READ; |
|
694 } |
|
695 else |
|
696 { |
|
697 if( request == DLocalDrive::ERead ) |
|
698 { |
|
699 transactionDirection = NVMEM_TRANSACTION_READ; |
|
700 // Write to client |
|
701 __DEBUG_PRINT("DMediaDriverStaticRD::DoSessionEndDfc() WriteRemote: %d head: %d", latestTransferSize, iHead ); |
|
702 TPtrC8 sourceDescriptor(&iTransferBufferLin[iHead], latestTransferSize); |
|
703 r = iCurrentRequest->WriteRemote( &sourceDescriptor, 0 ); |
|
704 } |
|
705 // Head is processed |
|
706 iHead = 0; |
|
707 if( request == DLocalDrive::EWrite && !sessionComplete ) |
|
708 { |
|
709 transactionDirection = NVMEM_TRANSACTION_WRITE; |
|
710 if( bufferReady ) |
|
711 { |
|
712 // Actually no need for any actions here |
|
713 } |
|
714 else |
|
715 { |
|
716 // Prepare a buffer for transfer |
|
717 __DEBUG_PRINT("DMediaDriverStaticRD::DoSessionEndDfc() ReadRemote: %d head: %d", latestTransferSize, iHead ); |
|
718 TPtr8 targetDescriptor(iTransferBufferLin, transactionLength); |
|
719 r = iCurrentRequest->ReadRemote(&targetDescriptor,0); |
|
720 } |
|
721 } |
|
722 if( request == DLocalDrive::EFormat ) |
|
723 { |
|
724 transactionDirection = NVMEM_TRANSACTION_WRITE; |
|
725 } |
|
726 } |
|
727 if( sessionComplete ) |
|
728 { |
|
729 CompleteRequest( r ); |
|
730 } |
|
731 else |
|
732 { |
|
733 ContinueTransaction( transactionSectorOffset, transactionLength/KDiskSectorSize, transactionDirection ); |
|
734 } |
|
735 } |
|
736 else |
|
737 { |
|
738 // Let's just flow through for now |
|
739 } |
|
740 |
|
741 __DEBUG_PRINT("<DMediaDriverStaticRD::DoSessionEndDfc()" ); |
|
742 } |
|
743 |
|
744 |
|
745 TUint32 DMediaDriverStaticRD::GetNVMemSize( void ) |
|
746 { |
|
747 __DEBUG_PRINT("DMediaDriverStaticRD::GetNVMemSize()"); |
|
748 TUint32 sizeInSectors = 32768;//ReadReg( KHwNVMemoryDevice, R_NVMEM_NV_MEMORY_SIZE ); |
|
749 return sizeInSectors; |
|
750 } |
|
751 |
|
752 void DMediaDriverStaticRD::Isr(TAny* aPtr) |
|
753 { |
|
754 __DEBUG_PRINT(">DMediaDriverStaticRD::Isr"); |
|
755 |
|
756 DMediaDriverStaticRD* nvMem = reinterpret_cast<DMediaDriverStaticRD*>(aPtr); |
|
757 |
|
758 // Save the amount of transferred sectors. This clears the interrupt from HW as well |
|
759 //nvMem->iLatestTransferSectorCount = ReadReg( KHwNVMemoryDevice, R_NVMEM_STATUS ); |
|
760 |
|
761 // Clear from framework |
|
762 //Interrupt::Clear( EIntNVMemoryDevice ); |
|
763 |
|
764 nvMem->iSessionEndDfc.Add(); |
|
765 } |
|
766 |
|
767 |
|
768 DECLARE_EXTENSION_PDD() |
|
769 { |
|
770 __DEBUG_PRINT(">MediaDriverStaticRD create device"); |
|
771 return new DPhysicalDeviceMediaStaticRD; |
|
772 } |
|
773 |
|
774 static const TInt NVMemDriveNumbers[NVMEM1_DRIVECOUNT]={NVMEM1_DRIVELIST}; |
|
775 |
|
776 DECLARE_STANDARD_EXTENSION() |
|
777 { |
|
778 __DEBUG_PRINT("Registering STATICRD drive"); |
|
779 TInt r=KErrNoMemory; |
|
780 |
|
781 DPrimaryMediaBase* pM=new DPrimaryMediaBase; |
|
782 |
|
783 TDynamicDfcQue* NVMemoryDfcQ; |
|
784 |
|
785 r = Kern::DynamicDfcQCreate( NVMemoryDfcQ, KNVMemDfcThreadPriority, KNVMemDriveName ); |
|
786 |
|
787 if( r == KErrNone ) |
|
788 { |
|
789 pM->iDfcQ = NVMemoryDfcQ; |
|
790 } |
|
791 else |
|
792 { |
|
793 __DEBUG_PRINT("NVMEM DFCQ initialization failed"); |
|
794 } |
|
795 |
|
796 if (pM) |
|
797 |
|
798 { |
|
799 r=LocDrv::RegisterMediaDevice(EFixedMedia1,NVMEM1_DRIVECOUNT,&NVMemDriveNumbers[0],pM,NVMEM1_NUMMEDIA,KNVMemDriveName); |
|
800 } |
|
801 |
|
802 pM->iMsgQ.Receive(); |
|
803 |
|
804 __DEBUG_PRINT("Registering NVMEM drive - return %d",r); |
|
805 |
|
806 return r; |
|
807 } |