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1 /* |
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2 * Copyright (c) 2004-2009 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 - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * |
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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 #include "cbulkonlytransport.h" |
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25 #include "cbulkonlytransportusbcscldd.h" |
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26 #include "usbmsshared.h" |
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27 #include "massstoragedebug.h" |
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28 #include "cusbmassstorageserver.h" |
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29 |
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30 |
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31 //This value defined in USB Mass Storage Bulk Only Transrt spec and not supposed to be changed |
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32 LOCAL_D const TInt KRequiredNumberOfEndpoints = 2; // in addition to endpoint 0. |
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33 |
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34 LOCAL_D const TInt KUsbNumInterfacesOffset = 4; |
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35 |
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36 #ifdef MSDC_MULTITHREADED |
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37 //Only used in DB. The first 2K of KMaxScBufferSize for sending CSW |
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38 static const TUint32 KCswBufferSize = 2 * 1024; |
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39 #endif |
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40 |
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41 //////////////////////////////////// |
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42 /** |
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43 Called by CBulkOnlyTransportUsbcScLdd to create an instance of CControlInterfaceUsbcScLdd |
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44 |
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45 @param aParent reference to the CBulkOnlyTransportUsbcScLdd |
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46 */ |
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47 |
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48 |
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49 CControlInterfaceUsbcScLdd* CControlInterfaceUsbcScLdd::NewL(CBulkOnlyTransportUsbcScLdd& aParent) |
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50 { |
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51 CControlInterfaceUsbcScLdd* self = new(ELeave) CControlInterfaceUsbcScLdd(aParent); |
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52 CleanupStack::PushL(self); |
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53 self->ConstructL(); |
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54 CActiveScheduler::Add(self); |
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55 CleanupStack::Pop(); |
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56 return self; |
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57 } |
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58 |
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59 |
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60 void CControlInterfaceUsbcScLdd::ConstructL() |
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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 /** |
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66 c'tor |
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67 |
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68 @param aParent reference to the CBulkOnlyTransportUsbcScLdd |
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69 */ |
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70 CControlInterfaceUsbcScLdd::CControlInterfaceUsbcScLdd(CBulkOnlyTransportUsbcScLdd& aParent) |
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71 :CActive(EPriorityStandard), |
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72 iParent(aParent), |
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73 iCurrentState(ENone) |
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74 { |
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75 } |
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76 |
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77 |
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78 /** |
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79 d'tor |
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80 */ |
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81 CControlInterfaceUsbcScLdd::~CControlInterfaceUsbcScLdd() |
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82 { |
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83 __FNLOG("CControlInterfaceUsbcScLdd::~CControlInterfaceUsbcScLdd "); |
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84 Cancel(); |
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85 iEp0Buf.Close(); |
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86 } |
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87 |
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88 TInt CControlInterfaceUsbcScLdd::OpenEp0() |
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89 { |
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90 TInt res = iParent.Ldd().OpenEndpoint(iEp0Buf,0); |
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91 return res; |
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92 } |
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93 |
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94 /** |
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95 Called by CBulkOnlyTransport HwStart to start control interface |
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96 */ |
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97 TInt CControlInterfaceUsbcScLdd::Start() |
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98 { |
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99 __FNLOG("CControlInterfaceUsbcScLdd::Start "); |
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100 TInt res = ReadEp0Data(); |
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101 return (res); |
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102 } |
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103 |
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104 |
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105 /** |
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106 Called by desctructor of CBulkOnlyTransportUsbcScLdd to stop control interface |
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107 */ |
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108 void CControlInterfaceUsbcScLdd::Stop() |
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109 { |
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110 __FNLOG("CControlInterfaceUsbcScLdd::Stop "); |
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111 if (!IsActive()) |
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112 { |
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113 __PRINT(_L("Not active\n")); |
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114 return; |
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115 } |
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116 |
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117 __PRINT(_L("\nStopping...\n")); |
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118 |
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119 |
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120 iCurrentState = ENone; |
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121 |
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122 Cancel(); |
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123 } |
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124 |
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125 |
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126 /** |
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127 Cancel outstanding request (if any) |
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128 */ |
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129 void CControlInterfaceUsbcScLdd::DoCancel() |
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130 { |
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131 __FNLOG("CControlInterfaceUsbcScLdd::DoCancel "); |
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132 switch(iCurrentState) |
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133 { |
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134 case EReadEp0Data: |
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135 iParent.Ldd().ReadCancel(KUsbcScEndpointZero); |
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136 break; |
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137 case ESendMaxLun: |
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138 iParent.Ldd().WriteCancel(KUsbcScEndpointZero); |
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139 break; |
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140 default: |
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141 __PRINT(_L("\nWrong state !\n")); |
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142 __ASSERT_DEBUG(EFalse, User::Panic(KUsbMsSvrPncCat, EMsControlInterfaceBadState)); |
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143 } |
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144 } |
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145 |
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146 |
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147 /** |
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148 Implement CControlInterfaceUsbcScLdd state machine |
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149 */ |
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150 void CControlInterfaceUsbcScLdd::RunL() |
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151 { |
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152 __FNLOG("CControlInterfaceUsbcScLdd::RunL "); |
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153 if (iStatus != KErrNone) |
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154 { |
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155 __PRINT1(_L("Error %d in RunL\n"), iStatus.Int()); |
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156 |
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157 //read EP0 again |
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158 ReadEp0Data(); |
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159 return; |
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160 } |
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161 |
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162 ReadEp0Data(); |
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163 } |
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164 |
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165 /** |
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166 Actual Read to RDevUsbcScClient BIL |
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167 */ |
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168 TInt CControlInterfaceUsbcScLdd::ReadUsbEp0() |
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169 { |
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170 iCurrentState = EReadEp0Data; |
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171 iStatus = KRequestPending; |
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172 return iEp0Buf.GetBuffer (iEp0Packet,iEp0Size,iEp0Zlp,iStatus); |
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173 } |
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174 |
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175 |
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176 /** |
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177 Post a read request to EEndpoint0 to read request header |
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178 */ |
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179 TInt CControlInterfaceUsbcScLdd::ReadEp0Data() |
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180 { |
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181 __FNLOG("CControlInterfaceUsbcScLdd::ReadEp0Data "); |
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182 if (IsActive()) |
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183 { |
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184 __PRINT(_L("Still active\n")); |
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185 return KErrServerBusy; |
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186 } |
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187 |
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188 TInt r = KErrNone; |
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189 do |
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190 { |
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191 r = ReadUsbEp0(); |
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192 if (r == KErrCompletion) |
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193 { |
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194 iStatus = KErrNone; |
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195 DecodeEp0Data(); |
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196 } |
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197 else if (r == KErrNone) |
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198 { |
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199 SetActive(); |
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200 } |
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201 } while (((r == KErrCompletion) || (r == TEndpointBuffer::KStateChange)) && (!IsActive())); |
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202 return KErrNone; |
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203 } |
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204 |
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205 |
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206 /** |
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207 Decode request header and do appropriate action - get max LUN info or post a reset request |
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208 */ |
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209 void CControlInterfaceUsbcScLdd::DecodeEp0Data() |
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210 { |
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211 __FNLOG("CControlInterfaceUsbcScLdd::DecodeEp0Data "); |
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212 |
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213 if (IsActive()) |
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214 { |
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215 __PRINT(_L("Still active\n")); |
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216 __ASSERT_DEBUG(EFalse, User::Panic(KUsbMsSvrPncCat, EMsControlInterfaceStillActive)); |
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217 return; |
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218 } |
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219 |
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220 TPtrC8 ep0ReadDataPtr((TUint8*)iEp0Packet, iEp0Size); |
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221 TInt err = iRequestHeader.Decode(ep0ReadDataPtr); |
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222 |
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223 if(err != KErrNone) |
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224 return; |
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225 |
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226 switch(iRequestHeader.iRequest) |
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227 { |
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228 // |
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229 // GET MAX LUN (0xFE) |
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230 // |
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231 case TUsbRequestHdr::EReqGetMaxLun: |
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232 { |
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233 __PRINT1(_L("DecodeEp0Data : 'Get Max LUN' Request MaxLun = %d"),iParent.MaxLun() ); |
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234 |
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235 if ( iRequestHeader.iRequestType != 0xA1 //value from USB MS BOT spec |
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236 || iRequestHeader.iIndex > 15 |
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237 || iRequestHeader.iValue != 0 |
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238 || iRequestHeader.iLength != 1) |
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239 { |
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240 __PRINT(_L("GetMaxLun command packet check error")); |
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241 iParent.Ldd().EndpointZeroRequestError(); |
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242 break; |
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243 } |
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244 |
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245 TPtr8* ep0WriteDataPtr = NULL; |
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246 TUint ep0Length; |
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247 iEp0Buf.GetInBufferRange(((TAny*&)ep0WriteDataPtr),ep0Length); |
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248 ep0WriteDataPtr->SetLength(1); //Return only 1 byte to host |
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249 ep0WriteDataPtr->Fill(0); |
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250 ep0WriteDataPtr->Fill(iParent.MaxLun()); // Supported Units |
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251 TInt length = ep0WriteDataPtr->Length(); |
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252 err = iEp0Buf.WriteBuffer((TPtr8*)(ep0WriteDataPtr->Ptr()),length,ETrue,iStatus); |
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253 |
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254 iCurrentState = ESendMaxLun; |
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255 SetActive(); |
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256 |
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257 return; |
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258 } |
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259 // |
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260 // RESET (0xFF) |
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261 // |
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262 case TUsbRequestHdr::EReqReset: |
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263 { |
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264 __PRINT(_L("DecodeEp0Data : 'Mass Storage Reset' Request")); |
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265 |
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266 if ( iRequestHeader.iRequestType != 0x21 //value from USB MS BOT spec |
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267 || iRequestHeader.iIndex > 15 |
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268 || iRequestHeader.iValue != 0 |
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269 || iRequestHeader.iLength != 0) |
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270 { |
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271 __PRINT(_L("MSC Reset command packet check error")); |
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272 iParent.Ldd().EndpointZeroRequestError(); |
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273 break; |
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274 } |
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275 |
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276 iParent.HwStop(); |
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277 iParent.Controller().Reset(); |
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278 iParent.HwStart(ETrue); |
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279 |
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280 err = iParent.Ldd().SendEp0StatusPacket(); |
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281 return; |
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282 } |
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283 // |
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284 // Unknown? |
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285 // |
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286 default: |
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287 { |
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288 __PRINT(_L("DecodeEp0Data : Unknown Request")); |
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289 |
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290 } |
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291 } |
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292 ReadEp0Data(); //try to get another request |
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293 } |
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294 |
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295 |
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296 // |
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297 // --- class CBulkOnlyTransportUsbcScLdd --------------------------------------------------------- |
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298 // |
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299 |
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300 CBulkOnlyTransportUsbcScLdd::CBulkOnlyTransportUsbcScLdd(TInt aNumDrives,CUsbMassStorageController& aController) |
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301 :CBulkOnlyTransport(aNumDrives, aController) |
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302 { |
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303 __FNLOG("CBulkOnlyTransportUsbcScLdd::CBulkOnlyTransportUsbcScLdd"); |
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304 } |
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305 |
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306 /** |
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307 Constructs the CBulkOnlyTransportUsbcScLdd object |
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308 */ |
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309 void CBulkOnlyTransportUsbcScLdd::ConstructL() |
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310 { |
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311 __FNLOG("CBulkOnlyTransportUsbcScLdd::ConstructL()"); |
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312 iControlInterface = CControlInterfaceUsbcScLdd::NewL(*this); |
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313 iDeviceStateNotifier = CActiveDeviceStateNotifierBase::NewL(*this, *this); |
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314 iChunk = new RChunk(); |
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315 CActiveScheduler::Add(this); |
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316 } |
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317 |
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318 |
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319 CBulkOnlyTransportUsbcScLdd::~CBulkOnlyTransportUsbcScLdd() |
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320 { |
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321 __FNLOG("CBulkOnlyTransportUsbcScLdd::~CBulkOnlyTransportUsbcScLdd"); |
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322 if (iInterfaceConfigured) |
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323 { |
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324 TInt err = iSCReadEndpointBuf.Close(); |
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325 err = iSCWriteEndpointBuf.Close(); |
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326 delete iControlInterface ; |
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327 delete iDeviceStateNotifier; |
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328 delete iChunk; |
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329 } |
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330 } |
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331 |
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332 RDevUsbcScClient& CBulkOnlyTransportUsbcScLdd::Ldd() |
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333 { |
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334 return iLdd; |
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335 } |
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336 |
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337 /** |
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338 Set or unset configuration descriptor for USB MassStorage Bulk Only transport |
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339 |
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340 @param aUnset indicate whether set or unset descriptor |
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341 @return KErrNone if operation was completed successfully, errorcode otherwise |
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342 */ |
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343 TInt CBulkOnlyTransportUsbcScLdd::SetupConfigurationDescriptor(TBool aUnset) |
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344 { |
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345 __FNLOG("CBulkOnlyTransportUsbcScLdd::SetupConfigurationDescriptor"); |
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346 TInt ret(KErrNone); |
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347 |
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348 if ((ret = iLdd.Open(0)) != KErrNone) |
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349 return ret; |
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350 |
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351 TInt configDescriptorSize(0); |
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352 iLdd.GetConfigurationDescriptorSize(configDescriptorSize); |
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353 if (static_cast<TUint>(configDescriptorSize) != KUsbDescSize_Config) |
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354 { |
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355 return KErrCorrupt; |
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356 } |
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357 |
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358 TBuf8<KUsbDescSize_Config> configDescriptor; |
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359 ret = iLdd.GetConfigurationDescriptor(configDescriptor); |
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360 if (ret != KErrNone) |
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361 { |
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362 return ret; |
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363 } |
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364 |
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365 // I beleive that other fields setted up during LDD initialisation |
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366 if (aUnset) |
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367 { |
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368 --configDescriptor[KUsbNumInterfacesOffset]; |
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369 } |
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370 else |
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371 { |
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372 ++configDescriptor[KUsbNumInterfacesOffset]; |
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373 } |
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374 ret = iLdd.SetConfigurationDescriptor(configDescriptor); |
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375 |
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376 if (aUnset) |
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377 { |
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378 iLdd.Close(); |
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379 } |
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380 |
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381 return ret; |
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382 } |
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383 |
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384 /** |
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385 Set up interface descriptor |
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386 |
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387 @return KErrNone if operation was completed successfully, errorcode otherwise |
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388 */ |
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389 TInt CBulkOnlyTransportUsbcScLdd::SetupInterfaceDescriptors() |
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390 { |
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391 __FNLOG("CBulkOnlyTransportUsbcScLdd::SetupInterfaceDescriptors"); |
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392 // Device caps |
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393 TUsbDeviceCaps d_caps; |
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394 TInt ret = iLdd.DeviceCaps(d_caps); |
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395 if (ret != KErrNone) |
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396 { |
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397 return ret; |
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398 } |
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399 TInt totalEndpoints = d_caps().iTotalEndpoints; |
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400 if (totalEndpoints < KRequiredNumberOfEndpoints) |
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401 { |
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402 return KErrHardwareNotAvailable; |
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403 } |
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404 |
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405 // Endpoint caps |
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406 TUsbcEndpointData data[KUsbcMaxEndpoints]; |
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407 TPtr8 dataptr(reinterpret_cast<TUint8*>(data), sizeof(data), sizeof(data)); |
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408 ret = iLdd.EndpointCaps(dataptr); |
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409 if (ret != KErrNone) |
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410 { |
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411 return ret; |
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412 } |
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413 |
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414 // Set the active interface |
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415 TUsbcScInterfaceInfoBuf ifc; |
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416 TInt ep_found = 0; |
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417 TBool foundBulkIN = EFalse; |
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418 TBool foundBulkOUT = EFalse; |
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419 |
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420 for (TInt i = 0; i < totalEndpoints ; i++) |
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421 { |
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422 const TUsbcEndpointCaps* caps = &data[i].iCaps; |
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423 const TInt maxPacketSize = caps->MaxPacketSize(); |
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424 if (!foundBulkIN && |
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425 (caps->iTypesAndDir & (KUsbEpTypeBulk | KUsbEpDirIn)) == (KUsbEpTypeBulk | KUsbEpDirIn)) |
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426 { |
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427 // InEndpoint is going to be our TX (IN, write) endpoint |
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428 ifc().iEndpointData[0].iType = KUsbEpTypeBulk; |
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429 ifc().iEndpointData[0].iDir = KUsbEpDirIn; |
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430 ifc().iEndpointData[0].iSize = maxPacketSize; |
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431 ifc().iEndpointData[0].iInterval_Hs = 0; |
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432 ifc().iEndpointData[0].iBufferSize = KMaxScBufferSize; |
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433 foundBulkIN = ETrue; |
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434 if (++ep_found == KRequiredNumberOfEndpoints) |
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435 { |
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436 break; |
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437 } |
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438 continue; |
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439 } |
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440 if (!foundBulkOUT && |
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441 (caps->iTypesAndDir & (KUsbEpTypeBulk | KUsbEpDirOut)) == (KUsbEpTypeBulk | KUsbEpDirOut)) |
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442 { |
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443 // OutEndpoint is going to be our RX (OUT, read) endpoint |
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444 ifc().iEndpointData[1].iType = KUsbEpTypeBulk; |
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445 ifc().iEndpointData[1].iDir = KUsbEpDirOut; |
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446 ifc().iEndpointData[1].iSize = maxPacketSize; |
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447 ifc().iEndpointData[1].iInterval_Hs = 0; |
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448 ifc().iEndpointData[1].iBufferSize = KMaxScBufferSize; |
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449 ifc().iEndpointData[1].iReadSize = KMaxScReadSize; |
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450 |
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451 foundBulkOUT = ETrue; |
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452 if (++ep_found == KRequiredNumberOfEndpoints) |
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453 { |
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454 break; |
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455 } |
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456 continue; |
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457 } |
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458 } |
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459 if (ep_found != KRequiredNumberOfEndpoints) |
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460 { |
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461 return KErrHardwareNotAvailable; |
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462 } |
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463 |
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464 _LIT16(string, "USB Mass Storage Interface"); |
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465 ifc().iString = const_cast<TDesC16*>(&string); |
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466 ifc().iTotalEndpointsUsed = KRequiredNumberOfEndpoints; |
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467 ifc().iClass.iClassNum = 0x08; // Mass Storage |
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468 ifc().iClass.iSubClassNum = 0x06; // SCSI Transparent Command Set |
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469 ifc().iClass.iProtocolNum = 0x50; // Bulk Only Transport |
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470 |
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471 if (d_caps().iHighSpeed) |
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472 { |
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473 // Tell the Protocol about it, because it might want to do some |
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474 // optimizing too. |
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475 iProtocol->ReportHighSpeedDevice(); |
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476 } |
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477 |
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478 if ((ret = iLdd.SetInterface(0, ifc)) == KErrNone) |
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479 { |
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480 return (iLdd.FinalizeInterface(iChunk)); |
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481 } |
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482 return ret; |
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483 } |
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484 |
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485 void CBulkOnlyTransportUsbcScLdd::ReleaseInterface() |
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486 { |
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487 iLdd.ReleaseInterface(0); |
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488 } |
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489 |
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490 |
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491 TInt CBulkOnlyTransportUsbcScLdd::StartControlInterface() |
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492 { |
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493 return iControlInterface->Start(); |
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494 } |
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495 |
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496 void CBulkOnlyTransportUsbcScLdd::CancelControlInterface() |
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497 { |
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498 iControlInterface->Cancel(); |
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499 } |
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500 |
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501 void CBulkOnlyTransportUsbcScLdd::ActivateDeviceStateNotifier() |
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502 { |
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503 iDeviceStateNotifier->Activate(); |
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504 } |
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505 |
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506 void CBulkOnlyTransportUsbcScLdd::CancelDeviceStateNotifier() |
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507 { |
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508 iDeviceStateNotifier->Cancel(); |
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509 } |
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510 |
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511 |
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512 void CBulkOnlyTransportUsbcScLdd::CancelReadWriteRequests() |
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513 { |
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514 __FNLOG("CBulkOnlyTransportUsbcScLdd::CancelReadWriteRequests"); |
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515 TUsbcScChunkHeader chunkHeader(*iChunk); |
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516 for (TInt i = 0; i < chunkHeader.iAltSettings->iNumOfAltSettings; i++) |
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517 { |
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518 TInt8* endpoint = (TInt8*) (chunkHeader.iAltSettings->iAltTableOffset[i] + (TInt) iChunk->Base()); |
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519 TInt numOfEps = chunkHeader.GetNumberOfEndpoints(i); |
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520 __ASSERT_DEBUG(numOfEps >= 0, User::Invariant()); |
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521 for (TInt j = 1; j <= numOfEps; j++) |
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522 { |
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523 TUsbcScHdrEndpointRecord* endpointInf = (TUsbcScHdrEndpointRecord*) &(endpoint[j * chunkHeader.iAltSettings->iEpRecordSize]); |
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524 if (endpointInf->Direction() == KUsbScHdrEpDirectionOut) |
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525 { |
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526 iLdd.ReadCancel(endpointInf->iBufferNo); |
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527 } |
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528 if (endpointInf->Direction() == KUsbScHdrEpDirectionIn) |
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529 { |
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530 iLdd.WriteCancel(endpointInf->iBufferNo); |
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531 } |
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532 } |
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533 } |
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534 } |
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535 |
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536 void CBulkOnlyTransportUsbcScLdd::AllocateEndpointResources() |
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537 { |
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538 TUsbcScChunkHeader chunkHeader(*iChunk); |
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539 for (TInt i = 0; i < chunkHeader.iAltSettings->iNumOfAltSettings; i++) |
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540 { |
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541 TInt8* endpoint = (TInt8*) (chunkHeader.iAltSettings->iAltTableOffset[i] + (TInt) iChunk->Base()); |
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542 |
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543 for (TInt j = 1; j <= chunkHeader.GetNumberOfEndpoints(i); j++) |
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544 { |
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545 TUsbcScHdrEndpointRecord* endpointInf = (TUsbcScHdrEndpointRecord*) &(endpoint[j * chunkHeader.iAltSettings->iEpRecordSize]); |
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546 if (endpointInf->Direction() == KUsbScHdrEpDirectionOut) |
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547 { |
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548 iOutEndpoint = j; |
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549 } |
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550 if (endpointInf->Direction() == KUsbScHdrEpDirectionIn) |
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551 { |
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552 iInEndpoint = j; |
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553 } |
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554 } |
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555 } |
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556 |
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557 __PRINT(_L("CBulkOnlyTransportUsbcScLdd::Start - Setting up DMA and double buffering\n")); |
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558 // Set up DMA if possible (errors are non-critical) |
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559 TInt err = iLdd.AllocateEndpointResource(iOutEndpoint, EUsbcEndpointResourceDMA); |
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560 if (err != KErrNone) |
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561 { |
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562 __PRINT1(_L("Set DMA on OUT endpoint failed with error code: %d"), err); |
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563 } |
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564 err = iLdd.AllocateEndpointResource(iInEndpoint, EUsbcEndpointResourceDMA); |
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565 if (err != KErrNone) |
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566 { |
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567 __PRINT1(_L("Set DMA on IN endpoint failed with error code: %d"), err); |
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568 } |
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569 |
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570 // Set up Double Buffering if possible (errors are non-critical) |
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571 err = iLdd.AllocateEndpointResource(iOutEndpoint, EUsbcEndpointResourceDoubleBuffering); |
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572 if (err != KErrNone) |
|
573 { |
|
574 __PRINT1(_L("Set Double Buffering on OUT endpoint failed with error code: %d"), err); |
|
575 } |
|
576 err = iLdd.AllocateEndpointResource(iInEndpoint, EUsbcEndpointResourceDoubleBuffering); |
|
577 if (err != KErrNone) |
|
578 { |
|
579 __PRINT1(_L("Set Double Buffering on IN endpoint failed with error code: %d"), err); |
|
580 } |
|
581 |
|
582 |
|
583 err = OpenEndpoints(); |
|
584 } |
|
585 |
|
586 TInt CBulkOnlyTransportUsbcScLdd::OpenEndpoints() |
|
587 { |
|
588 TInt res = iLdd.OpenEndpoint(iSCReadEndpointBuf, iOutEndpoint); |
|
589 if (res == KErrNone) |
|
590 { |
|
591 res = iLdd.OpenEndpoint(iSCWriteEndpointBuf, iInEndpoint); |
|
592 if (res == KErrNone) |
|
593 { |
|
594 iSCWriteEndpointBuf.GetInBufferRange((TAny*&)iDataPtr, iInBufferLength); |
|
595 res = iControlInterface->OpenEp0(); |
|
596 } |
|
597 return res; |
|
598 } |
|
599 |
|
600 return res; |
|
601 } |
|
602 |
|
603 |
|
604 TInt CBulkOnlyTransportUsbcScLdd::GetDeviceStatus(TUsbcDeviceState& deviceStatus) |
|
605 { |
|
606 return iLdd.DeviceStatus(deviceStatus); |
|
607 } |
|
608 |
|
609 void CBulkOnlyTransportUsbcScLdd::FlushData() |
|
610 { |
|
611 // Intentionally Left Blank Do Nothing |
|
612 } |
|
613 |
|
614 /** |
|
615 * Read out rest data from OutEndpoint and discard them |
|
616 */ |
|
617 void CBulkOnlyTransportUsbcScLdd::ReadAndDiscardData(TInt /*aBytes*/) |
|
618 { |
|
619 __FNLOG("CBulkOnlyTransport::ReadAndDiscardData"); |
|
620 TRequestStatus status; |
|
621 TInt r = KErrNone; // Lets assume there is no data |
|
622 do |
|
623 { |
|
624 iSCReadSize = 0; |
|
625 status = KErrNone; |
|
626 r = iSCReadEndpointBuf.TakeBuffer(iSCReadData,iSCReadSize,iReadZlp,status); |
|
627 iSCReadEndpointBuf.Expire(); |
|
628 } |
|
629 while (r == KErrCompletion); |
|
630 |
|
631 if (r == KErrNone) |
|
632 { |
|
633 TRequestStatus* stat = &status; |
|
634 User::RequestComplete(stat, KErrNone); |
|
635 } |
|
636 } |
|
637 |
|
638 /** |
|
639 Called by the protocol to determine how many bytes of data are available in the read buffer. |
|
640 |
|
641 @return The number of bytes available in the read buffer |
|
642 */ |
|
643 TInt CBulkOnlyTransportUsbcScLdd::BytesAvailable() |
|
644 { |
|
645 // Intentionally Left Blank Do Nothing |
|
646 return 0; |
|
647 } |
|
648 |
|
649 void CBulkOnlyTransportUsbcScLdd::StallEndpointAndWaitForClear() |
|
650 { |
|
651 __FNLOG("CBulkOnlyTransportUsbcScLdd::StallEndpointAndWaitForClear"); |
|
652 |
|
653 // Now stall this endpoint |
|
654 __PRINT1(_L("Stalling endpoint %d"), iInEndpoint); |
|
655 TInt r = iLdd.HaltEndpoint(iInEndpoint); |
|
656 if (r != KErrNone) |
|
657 { |
|
658 __PRINT2(_L("Error: stalling ep %d failed: %d"), iInEndpoint, r); |
|
659 } |
|
660 TEndpointState ep_state; |
|
661 TInt i = 0; |
|
662 do |
|
663 { |
|
664 // Wait for 10ms before checking the ep status |
|
665 User::After(10000); |
|
666 iLdd.EndpointStatus(iInEndpoint, ep_state); |
|
667 if (++i >= 550) |
|
668 { |
|
669 // 5.5 secs should be enough (see 9.2.6.1 Request Processing Timing) |
|
670 __PRINT1(_L("Error: Checked for ep %d de-stall for 5.5s - giving up now"), iInEndpoint); |
|
671 // We can now only hope for a Reset Recovery |
|
672 return; |
|
673 } |
|
674 } while ((ep_state == EEndpointStateStalled) && iStarted); |
|
675 __PRINT2(_L("Checked for ep %d de-stall: %d time(s)"), iInEndpoint, i); |
|
676 } |
|
677 |
|
678 /** |
|
679 Read CBW data from the host and decode it. |
|
680 */ |
|
681 void CBulkOnlyTransportUsbcScLdd::ReadCBW() |
|
682 { |
|
683 __FNLOG("CBulkOnlyTransportUsbcScLdd::ReadCBW"); |
|
684 if (IsActive()) |
|
685 { |
|
686 __PRINT(_L("Still active\n")); |
|
687 __ASSERT_DEBUG(EFalse, User::Panic(KUsbMsSvrPncCat, EMsBulkOnlyStillActive)); |
|
688 return; |
|
689 } |
|
690 TInt r = KErrNone; |
|
691 do |
|
692 { |
|
693 r = ReadUsb(); |
|
694 if ((r == KErrCompletion) && (iSCReadSize == KCbwLength)) |
|
695 { |
|
696 iCurrentState = EWaitForCBW; |
|
697 iStatus = KErrNone; |
|
698 DecodeCBW(); |
|
699 iSCReadSize = 0; |
|
700 } |
|
701 else if (r == KErrNone) |
|
702 { |
|
703 iCurrentState = EWaitForCBW; |
|
704 SetActive(); |
|
705 } |
|
706 else if ((r == KErrCompletion) && (iSCReadSize != KCbwLength)) |
|
707 { |
|
708 ExpireData(iSCReadData); |
|
709 } |
|
710 }while ((r == KErrCompletion) && (!IsActive())); |
|
711 } |
|
712 |
|
713 void CBulkOnlyTransportUsbcScLdd::ExpireData(TAny* aAddress) |
|
714 { |
|
715 if (aAddress) |
|
716 { |
|
717 iSCReadEndpointBuf.Expire(aAddress); |
|
718 } |
|
719 else |
|
720 { |
|
721 iSCReadEndpointBuf.Expire(); |
|
722 } |
|
723 } |
|
724 |
|
725 void CBulkOnlyTransportUsbcScLdd::ProcessCbwEvent() |
|
726 { |
|
727 ReadCBW(); |
|
728 } |
|
729 |
|
730 /** |
|
731 Request data form the host for the protocol |
|
732 |
|
733 @param aLength amount of data (in bytes) to be received from the host |
|
734 */ |
|
735 void CBulkOnlyTransportUsbcScLdd::ReadData(TUint /*aLength*/) |
|
736 { |
|
737 __FNLOG("CBulkOnlyTransportUsbcScLdd::ReadData"); |
|
738 if (IsActive()) |
|
739 { |
|
740 __PRINT(_L("Still active\n")); |
|
741 __ASSERT_DEBUG(EFalse, User::Panic(KUsbMsSvrPncCat, EMsBulkOnlyStillActive)); |
|
742 return; |
|
743 } |
|
744 TInt r = KErrNone; |
|
745 do |
|
746 { |
|
747 r = ReadUsb(); |
|
748 iCurrentState = EReadingData; |
|
749 if (r == KErrCompletion) |
|
750 { |
|
751 iReadBufPtr.Set((TUint8*) iSCReadData, iSCReadSize, iSCReadSize); |
|
752 iStatus = KErrNone; |
|
753 ProcessDataFromHost(); |
|
754 iSCReadSize = 0; |
|
755 } |
|
756 else if (r == KErrNone) |
|
757 { |
|
758 iSCReadSize = 0; |
|
759 SetActive(); |
|
760 } |
|
761 |
|
762 }while ((r == KErrCompletion) && (!IsActive())); |
|
763 } |
|
764 |
|
765 void CBulkOnlyTransportUsbcScLdd::ProcessDataFromHost() |
|
766 { |
|
767 TInt ret = KErrNone; |
|
768 { |
|
769 if (iReadSetUp) |
|
770 { |
|
771 ret = iProtocol->ReadComplete(KErrNone); |
|
772 } |
|
773 #ifndef MSDC_MULTITHREADED |
|
774 ExpireData(iSCReadData); |
|
775 #endif |
|
776 TUint deviceDataLength = iSCReadSize; // What was written to the disk // static_cast<TUint>(iReadBuf.Length()); |
|
777 if(ret == KErrCompletion) |
|
778 { |
|
779 // The protocol has indicated with KErrCompletion that sufficient |
|
780 // data is available in the buffer to process the transfer immediately. |
|
781 |
|
782 //iDataResidue is initially set to host data length as we do not know how much data is there in the 'LDD transfer'. |
|
783 //After a TakeBuffer call, iSCReadSize in updated and set to deviceDataLength |
|
784 iDataResidue -= deviceDataLength; |
|
785 } |
|
786 else |
|
787 { |
|
788 iDataResidue -= deviceDataLength; |
|
789 |
|
790 // The protocol has indicated that transfer is |
|
791 // complete, so send the CSW response to the host. |
|
792 iReadSetUp = EFalse; |
|
793 |
|
794 if (ret != KErrNone) |
|
795 { |
|
796 iCmdStatus = ECommandFailed; |
|
797 } |
|
798 |
|
799 if (iDataResidue) |
|
800 { |
|
801 __PRINT(_L("Discarding residue")); |
|
802 // we have to read as much data as available that host PC sends; |
|
803 // otherwise, bulk-out endpoint will need to keep sending NAK back. |
|
804 ReadAndDiscardData(iDataResidue); |
|
805 } |
|
806 |
|
807 SendCSW(iCbwTag, iDataResidue, iCmdStatus); |
|
808 } |
|
809 } |
|
810 } |
|
811 |
|
812 void CBulkOnlyTransportUsbcScLdd::WriteUsb(TRequestStatus& aStatus, TPtrC8& aDes, TUint aLength, TBool aZlpRequired) |
|
813 { |
|
814 TUint aOffset = (TUint) aDes.Ptr() - (TUint) iChunk->Base(); |
|
815 iSCWriteEndpointBuf.WriteBuffer(aOffset, aLength, aZlpRequired, aStatus); |
|
816 } |
|
817 |
|
818 void CBulkOnlyTransportUsbcScLdd::SetCbwPtr() |
|
819 { |
|
820 iCbwBufPtr.Set((TUint8*)iSCReadData, iSCReadSize); |
|
821 } |
|
822 |
|
823 TPtr8& CBulkOnlyTransportUsbcScLdd::SetCommandBufPtr(TUint aLength) |
|
824 { |
|
825 TPtr8 writeBuf((TUint8*) iDataPtr, aLength); |
|
826 iCommandBufPtr.Set(writeBuf); |
|
827 return iCommandBufPtr; |
|
828 } |
|
829 |
|
830 void CBulkOnlyTransportUsbcScLdd::SetReadDataBufPtr(TUint /*aLength*/) |
|
831 { |
|
832 // Do nothing for now |
|
833 } |
|
834 |
|
835 TPtr8& CBulkOnlyTransportUsbcScLdd::SetDataBufPtr() |
|
836 { |
|
837 TPtr8 writeBuf((TUint8*) iDataPtr, iInBufferLength); |
|
838 iDataBufPtr.Set(writeBuf); |
|
839 return iDataBufPtr; |
|
840 } |
|
841 |
|
842 void CBulkOnlyTransportUsbcScLdd::SetPaddingBufPtr(TUint aLength) |
|
843 { |
|
844 TPtr8 writeBuf((TUint8*) iDataPtr, aLength, aLength); |
|
845 iPaddingBufPtr.Set(writeBuf); |
|
846 } |
|
847 |
|
848 void CBulkOnlyTransportUsbcScLdd::SetCswBufPtr(TUint aLength) |
|
849 { |
|
850 TPtr8 writeBuf((TUint8*) iDataPtr, aLength, aLength); |
|
851 iCswBufPtr.Set(writeBuf); |
|
852 } |
|
853 |
|
854 void CBulkOnlyTransportUsbcScLdd::ProcessReadingDataEvent() |
|
855 { |
|
856 ReadData(); |
|
857 } |
|
858 |
|
859 TInt CBulkOnlyTransportUsbcScLdd::ReadUsb(TUint /*aLength*/) |
|
860 { |
|
861 __FNLOG("CBulkOnlyTransportUsbcScLdd::ReadUSB"); |
|
862 return iSCReadEndpointBuf.TakeBuffer(iSCReadData,iSCReadSize,iReadZlp,iStatus); |
|
863 } |
|
864 |
|
865 void CBulkOnlyTransportUsbcScLdd::DiscardData(TUint aLength) |
|
866 { |
|
867 TUint c = 0; |
|
868 TRequestStatus status; |
|
869 TInt r = KErrNone; |
|
870 while (c < aLength) |
|
871 { |
|
872 iSCReadSize = 0; |
|
873 status = KErrNone; |
|
874 r = iSCReadEndpointBuf.TakeBuffer(iSCReadData,iSCReadSize,iReadZlp,status); |
|
875 c += iSCReadSize; |
|
876 if (r == KErrNone) |
|
877 User::WaitForRequest(status); |
|
878 if (r == KErrCompletion) |
|
879 { |
|
880 iSCReadEndpointBuf.Expire(); |
|
881 } |
|
882 iSCReadSize = 0; |
|
883 } |
|
884 } |
|
885 |
|
886 void CBulkOnlyTransportUsbcScLdd::WriteToClient(TUint aLength) |
|
887 { |
|
888 TUint c = 0; |
|
889 TRequestStatus status; |
|
890 TInt r = KErrNone; |
|
891 while (c < aLength) |
|
892 { |
|
893 iSCReadSize = 0; |
|
894 status = KErrNone; |
|
895 r = iSCReadEndpointBuf.TakeBuffer(iSCReadData,iSCReadSize,iReadZlp,status); |
|
896 c += iSCReadSize; |
|
897 iProtocol->ReadComplete(KErrGeneral); |
|
898 if (r == KErrNone) |
|
899 User::WaitForRequest(status); |
|
900 if (r == KErrCompletion) |
|
901 { |
|
902 iSCReadEndpointBuf.Expire(); |
|
903 } |
|
904 iSCReadSize = 0; |
|
905 } |
|
906 } |
|
907 |
|
908 #ifdef MSDC_MULTITHREADED |
|
909 void CBulkOnlyTransportUsbcScLdd::GetBufferPointers(TPtr8& aDes1, TPtr8& aDes2) |
|
910 { |
|
911 //for DB |
|
912 TUint length = (TUint) (iInBufferLength - KCswBufferSize) / 2; |
|
913 |
|
914 TUint8* start = (TUint8*) (iDataPtr) + KCswBufferSize ; // 'first' buffer |
|
915 aDes1.Set(start, length, length); |
|
916 |
|
917 start = (TUint8*) (iDataPtr) + KCswBufferSize + length; // 'second' buffer |
|
918 aDes2.Set(start, length, length); |
|
919 } |
|
920 #endif |
|
921 |
|
922 void CBulkOnlyTransportUsbcScLdd::Activate(TRequestStatus& aStatus, TUint& aDeviceState) |
|
923 { |
|
924 iLdd.AlternateDeviceStatusNotify(aStatus, aDeviceState); |
|
925 } |
|
926 |
|
927 |
|
928 void CBulkOnlyTransportUsbcScLdd::Cancel() |
|
929 { |
|
930 iLdd.AlternateDeviceStatusNotifyCancel(); |
|
931 } |
|
932 |
|
933 |
|
934 |
|
935 |