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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 "cbulkonlytransportusbcldd.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 #define InEndpoint EEndpoint1 |
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31 #define OutEndpoint EEndpoint2 |
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32 |
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33 //This value defined in USB Mass Storage Bulk Only Transrt spec and not supposed to be changed |
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34 LOCAL_D const TInt KRequiredNumberOfEndpoints = 2; // in addition to endpoint 0. |
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35 |
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36 LOCAL_D const TInt KUsbNumInterfacesOffset = 4; |
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37 |
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38 //////////////////////////////////// |
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39 /** |
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40 Called by CBulkOnlyTransportUsbcLdd to create an instance of CControlInterfaceUsbcLdd |
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41 |
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42 @param aParent reference to the CBulkOnlyTransportUsbcLdd |
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43 */ |
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44 |
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45 |
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46 CControlInterfaceUsbcLdd* CControlInterfaceUsbcLdd::NewL(CBulkOnlyTransportUsbcLdd& aParent) |
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47 { |
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48 CControlInterfaceUsbcLdd* self = new(ELeave) CControlInterfaceUsbcLdd(aParent); |
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49 CleanupStack::PushL(self); |
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50 self->ConstructL(); |
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51 CActiveScheduler::Add(self); |
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52 CleanupStack::Pop(); |
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53 return self; |
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54 } |
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55 |
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56 |
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57 void CControlInterfaceUsbcLdd::ConstructL() |
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58 { |
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59 } |
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60 |
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61 |
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62 /** |
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63 c'tor |
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64 |
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65 @param aParent reference to the CBulkOnlyTransportUsbcLdd |
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66 */ |
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67 CControlInterfaceUsbcLdd::CControlInterfaceUsbcLdd(CBulkOnlyTransportUsbcLdd& aParent) |
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68 :CActive(EPriorityStandard), |
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69 iParent(aParent), |
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70 iCurrentState(ENone) |
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71 { |
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72 } |
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73 |
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74 |
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75 /** |
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76 d'tor |
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77 */ |
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78 CControlInterfaceUsbcLdd::~CControlInterfaceUsbcLdd() |
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79 { |
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80 __FNLOG("CControlInterfaceUsbcLdd::~CControlInterfaceUsbcLdd "); |
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81 Cancel(); |
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82 } |
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83 |
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84 |
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85 /** |
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86 Called by CBulkOnlyTransport HwStart to start control interface |
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87 */ |
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88 TInt CControlInterfaceUsbcLdd::Start() |
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89 { |
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90 __FNLOG("CControlInterfaceUsbcLdd::Start "); |
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91 TInt res = ReadEp0Data(); |
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92 return (res); |
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93 } |
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94 |
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95 |
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96 /** |
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97 Called by desctructor of CBulkOnlyTransportUsbcLdd to stop control interface |
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98 */ |
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99 void CControlInterfaceUsbcLdd::Stop() |
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100 { |
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101 __FNLOG("CControlInterfaceUsbcLdd::Stop "); |
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102 if (!IsActive()) |
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103 { |
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104 __PRINT(_L("Not active\n")); |
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105 return; |
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106 } |
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107 |
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108 __PRINT(_L("\nStopping...\n")); |
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109 |
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110 |
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111 iCurrentState = ENone; |
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112 |
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113 Cancel(); |
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114 } |
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115 |
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116 |
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117 /** |
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118 Cancel outstanding request (if any) |
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119 */ |
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120 void CControlInterfaceUsbcLdd::DoCancel() |
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121 { |
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122 __FNLOG("CControlInterfaceUsbcLdd::DoCancel "); |
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123 switch(iCurrentState) |
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124 { |
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125 case EReadEp0Data: |
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126 iParent.Ldd().ReadCancel(EEndpoint0); |
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127 break; |
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128 case ESendMaxLun: |
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129 iParent.Ldd().WriteCancel(EEndpoint0); |
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130 break; |
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131 default: |
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132 __PRINT(_L("\nWrong state !\n")); |
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133 __ASSERT_DEBUG(EFalse, User::Panic(KUsbMsSvrPncCat, EMsControlInterfaceBadState)); |
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134 } |
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135 } |
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136 |
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137 |
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138 /** |
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139 Implement CControlInterfaceUsbcLdd state machine |
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140 */ |
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141 void CControlInterfaceUsbcLdd::RunL() |
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142 { |
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143 __FNLOG("CControlInterfaceUsbcLdd::RunL "); |
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144 if (iStatus != KErrNone) |
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145 { |
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146 __PRINT1(_L("Error %d in RunL\n"), iStatus.Int()); |
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147 |
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148 //read EP0 again |
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149 ReadEp0Data(); |
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150 return; |
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151 } |
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152 |
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153 switch (iCurrentState) |
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154 { |
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155 case ESendMaxLun: |
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156 ReadEp0Data(); |
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157 break; |
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158 |
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159 case EReadEp0Data: |
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160 DecodeEp0Data(); |
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161 break; |
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162 |
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163 default: |
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164 __PRINT(_L(" error: (Shouldn't end up here...)\n")); |
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165 __ASSERT_DEBUG(EFalse, User::Panic(KUsbMsSvrPncCat, EMsControlInterfaceBadState)); |
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166 break; |
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167 } |
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168 return; |
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169 } |
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170 |
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171 |
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172 /** |
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173 Post a read request to EEndpoint0 to read request header |
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174 */ |
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175 TInt CControlInterfaceUsbcLdd::ReadEp0Data() |
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176 { |
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177 __FNLOG("CControlInterfaceUsbcLdd::ReadEp0Data "); |
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178 if (IsActive()) |
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179 { |
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180 __PRINT(_L("Still active\n")); |
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181 return KErrServerBusy; |
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182 } |
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183 iParent.Ldd().Read(iStatus, EEndpoint0, iData, KRequestHdrSize); |
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184 |
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185 iCurrentState = EReadEp0Data; |
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186 |
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187 SetActive(); |
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188 return KErrNone; |
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189 } |
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190 |
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191 |
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192 /** |
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193 Decode request header and do appropriate action - get max LUN info or post a reset request |
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194 */ |
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195 void CControlInterfaceUsbcLdd::DecodeEp0Data() |
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196 { |
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197 __FNLOG("CControlInterfaceUsbcLdd::DecodeEp0Data "); |
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198 if (IsActive()) |
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199 { |
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200 __PRINT(_L("Still active\n")); |
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201 __ASSERT_DEBUG(EFalse, User::Panic(KUsbMsSvrPncCat, EMsControlInterfaceStillActive)); |
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202 return; |
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203 } |
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204 |
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205 TInt err = iRequestHeader.Decode(iData); |
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206 |
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207 if(err != KErrNone) |
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208 return; |
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209 |
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210 switch(iRequestHeader.iRequest) |
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211 { |
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212 // |
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213 // GET MAX LUN (0xFE) |
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214 // |
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215 case TUsbRequestHdr::EReqGetMaxLun: |
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216 { |
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217 __PRINT1(_L("DecodeEp0Data : 'Get Max LUN' Request MaxLun = %d"),iParent.MaxLun() ); |
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218 |
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219 if ( iRequestHeader.iRequestType != 0xA1 //value from USB MS BOT spec |
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220 || iRequestHeader.iIndex > 15 |
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221 || iRequestHeader.iValue != 0 |
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222 || iRequestHeader.iLength != 1) |
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223 { |
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224 __PRINT(_L("GetMaxLun command packet check error")); |
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225 iParent.Ldd().EndpointZeroRequestError(); |
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226 break; |
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227 } |
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228 iData.FillZ(1); //Return only 1 byte to host |
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229 iData[0] = static_cast<TUint8>(iParent.MaxLun()); // Supported Units |
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230 iParent.Ldd().Write(iStatus, EEndpoint0, iData, 1); |
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231 |
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232 iCurrentState = ESendMaxLun; |
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233 SetActive(); |
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234 |
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235 return; |
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236 } |
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237 // |
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238 // RESET (0xFF) |
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239 // |
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240 case TUsbRequestHdr::EReqReset: |
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241 { |
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242 __PRINT(_L("DecodeEp0Data : 'Mass Storage Reset' Request")); |
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243 |
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244 if ( iRequestHeader.iRequestType != 0x21 //value from USB MS BOT spec |
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245 || iRequestHeader.iIndex > 15 |
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246 || iRequestHeader.iValue != 0 |
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247 || iRequestHeader.iLength != 0) |
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248 { |
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249 __PRINT(_L("MSC Reset command packet check error")); |
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250 iParent.Ldd().EndpointZeroRequestError(); |
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251 break; |
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252 } |
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253 iParent.HwStop(); |
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254 iParent.Controller().Reset(); |
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255 iParent.HwStart(ETrue); |
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256 |
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257 err = iParent.Ldd().SendEp0StatusPacket(); |
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258 |
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259 return; |
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260 } |
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261 // |
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262 // Unknown? |
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263 // |
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264 default: |
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265 { |
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266 __PRINT(_L("DecodeEp0Data : Unknown Request")); |
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267 |
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268 } |
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269 } |
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270 ReadEp0Data(); //try to get another request |
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271 } |
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272 |
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273 |
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274 // |
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275 // --- class CBulkOnlyTransportUsbcLdd --------------------------------------------------------- |
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276 // |
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277 |
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278 CBulkOnlyTransportUsbcLdd::CBulkOnlyTransportUsbcLdd(TInt aNumDrives,CUsbMassStorageController& aController) |
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279 :CBulkOnlyTransport(aNumDrives, aController), |
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280 iSwap(ETrue) |
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281 { |
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282 __FNLOG("CBulkOnlyTransportUsbcLdd::CBulkOnlyTransportUsbcLdd"); |
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283 } |
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284 |
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285 /** |
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286 Constructs the CBulkOnlyTransportUsbcLdd object |
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287 */ |
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288 void CBulkOnlyTransportUsbcLdd::ConstructL() |
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289 { |
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290 __FNLOG("CBulkOnlyTransportUsbcLdd::ConstructL()"); |
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291 iControlInterface = CControlInterfaceUsbcLdd::NewL(*this); |
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292 iDeviceStateNotifier = CActiveDeviceStateNotifierBase::NewL(*this, *this); |
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293 CActiveScheduler::Add(this); |
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294 } |
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295 |
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296 CBulkOnlyTransportUsbcLdd::~CBulkOnlyTransportUsbcLdd() |
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297 { |
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298 __FNLOG("CBulkOnlyTransportUsbcLdd::~CBulkOnlyTransportUsbcLdd"); |
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299 if (iInterfaceConfigured) |
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300 { |
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301 delete iControlInterface ; |
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302 delete iDeviceStateNotifier; |
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303 } |
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304 } |
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305 |
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306 RDevUsbcClient& CBulkOnlyTransportUsbcLdd::Ldd() |
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307 { |
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308 return iLdd; |
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309 } |
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310 |
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311 |
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312 /** |
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313 Set or unset configuration descriptor for USB MassStorage Bulk Only transport |
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314 |
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315 @param aUnset indicate whether set or unset descriptor |
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316 @return KErrNone if operation was completed successfully, errorcode otherwise |
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317 */ |
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318 TInt CBulkOnlyTransportUsbcLdd::SetupConfigurationDescriptor(TBool aUnset) |
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319 { |
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320 __FNLOG("CBulkOnlyTransportUsbcLdd::SetupConfigurationDescriptor"); |
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321 TInt ret(KErrNone); |
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322 |
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323 if ((ret = iLdd.Open(0)) != KErrNone) |
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324 return ret; |
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325 |
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326 TInt configDescriptorSize(0); |
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327 iLdd.GetConfigurationDescriptorSize(configDescriptorSize); |
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328 if (static_cast<TUint>(configDescriptorSize) != KUsbDescSize_Config) |
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329 { |
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330 return KErrCorrupt; |
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331 } |
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332 |
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333 TBuf8<KUsbDescSize_Config> configDescriptor; |
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334 ret = iLdd.GetConfigurationDescriptor(configDescriptor); |
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335 if (ret != KErrNone) |
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336 { |
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337 return ret; |
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338 } |
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339 |
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340 // I beleive that other fields setted up during LDD initialisation |
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341 if (aUnset) |
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342 { |
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343 --configDescriptor[KUsbNumInterfacesOffset]; |
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344 } |
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345 else |
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346 { |
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347 ++configDescriptor[KUsbNumInterfacesOffset]; |
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348 } |
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349 ret = iLdd.SetConfigurationDescriptor(configDescriptor); |
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350 |
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351 if (aUnset) |
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352 { |
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353 iLdd.Close(); |
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354 } |
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355 return ret; |
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356 } |
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357 |
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358 /** |
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359 Set up interface descriptor |
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360 |
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361 @return KErrNone if operation was completed successfully, errorcode otherwise |
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362 */ |
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363 TInt CBulkOnlyTransportUsbcLdd::SetupInterfaceDescriptors() |
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364 { |
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365 __FNLOG("CBulkOnlyTransportUsbcLdd::SetupInterfaceDescriptors"); |
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366 // Device caps |
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367 TUsbDeviceCaps d_caps; |
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368 TInt ret = iLdd.DeviceCaps(d_caps); |
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369 if (ret != KErrNone) |
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370 { |
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371 return ret; |
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372 } |
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373 TInt totalEndpoints = d_caps().iTotalEndpoints; |
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374 if (totalEndpoints < KRequiredNumberOfEndpoints) |
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375 { |
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376 return KErrHardwareNotAvailable; |
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377 } |
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378 |
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379 // Endpoint caps |
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380 TUsbcEndpointData data[KUsbcMaxEndpoints]; |
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381 TPtr8 dataptr(reinterpret_cast<TUint8*>(data), sizeof(data), sizeof(data)); |
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382 ret = iLdd.EndpointCaps(dataptr); |
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383 if (ret != KErrNone) |
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384 { |
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385 return ret; |
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386 } |
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387 |
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388 // Set the active interface |
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389 TUsbcInterfaceInfoBuf ifc; |
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390 TInt ep_found = 0; |
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391 TBool foundBulkIN = EFalse; |
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392 TBool foundBulkOUT = EFalse; |
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393 |
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394 for (TInt i = 0; i < totalEndpoints ; i++) |
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395 { |
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396 const TUsbcEndpointCaps* caps = &data[i].iCaps; |
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397 const TInt maxPacketSize = caps->MaxPacketSize(); |
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398 if (!foundBulkIN && |
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399 (caps->iTypesAndDir & (KUsbEpTypeBulk | KUsbEpDirIn)) == (KUsbEpTypeBulk | KUsbEpDirIn)) |
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400 { |
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401 // InEndpoint is going to be our TX (IN, write) endpoint |
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402 ifc().iEndpointData[0].iType = KUsbEpTypeBulk; |
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403 ifc().iEndpointData[0].iDir = KUsbEpDirIn; |
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404 ifc().iEndpointData[0].iSize = maxPacketSize; |
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405 ifc().iEndpointData[0].iInterval_Hs = 0; |
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406 foundBulkIN = ETrue; |
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407 if (++ep_found == KRequiredNumberOfEndpoints) |
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408 { |
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409 break; |
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410 } |
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411 continue; |
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412 } |
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413 if (!foundBulkOUT && |
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414 (caps->iTypesAndDir & (KUsbEpTypeBulk | KUsbEpDirOut)) == (KUsbEpTypeBulk | KUsbEpDirOut)) |
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415 { |
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416 // OutEndpoint is going to be our RX (OUT, read) endpoint |
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417 ifc().iEndpointData[1].iType = KUsbEpTypeBulk; |
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418 ifc().iEndpointData[1].iDir = KUsbEpDirOut; |
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419 ifc().iEndpointData[1].iSize = maxPacketSize; |
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420 ifc().iEndpointData[1].iInterval_Hs = 0; |
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421 foundBulkOUT = ETrue; |
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422 if (++ep_found == KRequiredNumberOfEndpoints) |
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423 { |
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424 break; |
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425 } |
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426 continue; |
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427 } |
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428 } |
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429 if (ep_found != KRequiredNumberOfEndpoints) |
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430 { |
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431 return KErrHardwareNotAvailable; |
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432 } |
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433 |
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434 _LIT16(string, "USB Mass Storage Interface"); |
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435 ifc().iString = const_cast<TDesC16*>(&string); |
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436 ifc().iTotalEndpointsUsed = KRequiredNumberOfEndpoints; |
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437 ifc().iClass.iClassNum = 0x08; // Mass Storage |
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438 ifc().iClass.iSubClassNum = 0x06; // SCSI Transparent Command Set |
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439 ifc().iClass.iProtocolNum = 0x50; // Bulk Only Transport |
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440 |
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441 TUint bandwidth_priority = (EUsbcBandwidthOUTDefault | EUsbcBandwidthINDefault); |
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442 if (d_caps().iHighSpeed) |
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443 { |
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444 // If this device supports USB High-speed, then we request 64KB buffers |
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445 // (otherwise the default 4KB ones will do). |
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446 bandwidth_priority = (EUsbcBandwidthOUTPlus2 | EUsbcBandwidthINPlus2); |
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447 // Also, tell the Protocol about it, because it might want to do some |
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448 // optimizing too. |
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449 iProtocol->ReportHighSpeedDevice(); |
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450 } |
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451 ret = iLdd.SetInterface(0, ifc, bandwidth_priority); |
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452 return ret; |
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453 } |
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454 |
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455 void CBulkOnlyTransportUsbcLdd::ReleaseInterface() |
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456 { |
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457 iLdd.ReleaseInterface(0); |
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458 } |
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459 |
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460 TInt CBulkOnlyTransportUsbcLdd::StartControlInterface() |
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461 { |
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462 return iControlInterface->Start(); |
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463 } |
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464 |
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465 void CBulkOnlyTransportUsbcLdd::CancelControlInterface() |
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466 { |
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467 iControlInterface->Cancel(); |
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468 } |
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469 |
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470 void CBulkOnlyTransportUsbcLdd::ActivateDeviceStateNotifier() |
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471 { |
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472 iDeviceStateNotifier->Activate(); |
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473 } |
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474 |
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475 void CBulkOnlyTransportUsbcLdd::CancelDeviceStateNotifier() |
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476 { |
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477 iDeviceStateNotifier->Cancel(); |
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478 } |
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479 |
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480 void CBulkOnlyTransportUsbcLdd::CancelReadWriteRequests() |
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481 { |
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482 __FNLOG("CBulkOnlyTransportUsbcLdd::CancelReadWriteRequests"); |
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483 iLdd.WriteCancel(InEndpoint); |
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484 iLdd.ReadCancel(OutEndpoint); |
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485 } |
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486 |
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487 void CBulkOnlyTransportUsbcLdd::AllocateEndpointResources() |
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488 { |
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489 // Set up DMA if possible (errors are non-critical) |
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490 TInt err = iLdd.AllocateEndpointResource(OutEndpoint, EUsbcEndpointResourceDMA); |
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491 if (err != KErrNone) |
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492 { |
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493 __PRINT1(_L("Set DMA on OUT endpoint failed with error code: %d"), err); |
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494 } |
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495 err = iLdd.AllocateEndpointResource(InEndpoint, EUsbcEndpointResourceDMA); |
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496 if (err != KErrNone) |
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497 { |
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498 __PRINT1(_L("Set DMA on IN endpoint failed with error code: %d"), err); |
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499 } |
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500 |
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501 // Set up Double Buffering if possible (errors are non-critical) |
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502 err = iLdd.AllocateEndpointResource(OutEndpoint, EUsbcEndpointResourceDoubleBuffering); |
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503 if (err != KErrNone) |
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504 { |
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505 __PRINT1(_L("Set Double Buffering on OUT endpoint failed with error code: %d"), err); |
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506 } |
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507 err = iLdd.AllocateEndpointResource(InEndpoint, EUsbcEndpointResourceDoubleBuffering); |
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508 if (err != KErrNone) |
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509 { |
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510 __PRINT1(_L("Set Double Buffering on IN endpoint failed with error code: %d"), err); |
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511 } |
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512 } |
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513 |
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514 TInt CBulkOnlyTransportUsbcLdd::GetDeviceStatus(TUsbcDeviceState& deviceStatus) |
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515 { |
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516 return iLdd.DeviceStatus(deviceStatus); |
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517 } |
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518 |
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519 void CBulkOnlyTransportUsbcLdd::FlushData() |
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520 { |
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521 TInt bytes; |
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522 const TInt err = iLdd.QueryReceiveBuffer(OutEndpoint, bytes); |
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523 if (err != KErrNone || bytes <= 0) |
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524 { |
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525 __PRINT1(_L("Error: err=%d bytes=%d"), bytes); |
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526 } |
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527 else |
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528 { |
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529 __PRINT1(_L("RxBuffer has %d bytes"), bytes); |
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530 ReadAndDiscardData(bytes); |
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531 } |
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532 } |
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533 /** |
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534 * Read out rest data from OutEndpoint and discard them |
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535 */ |
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536 void CBulkOnlyTransportUsbcLdd::ReadAndDiscardData(TInt aBytes) |
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537 { |
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538 __FNLOG("CBulkOnlyTransportUsbcLdd::ReadAndDiscardData"); |
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539 iDiscardBuf.SetMax(); |
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540 const TUint bufsize = static_cast<TUint>(iDiscardBuf.Length()); |
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541 TRequestStatus status; |
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542 while (aBytes > 0) |
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543 { |
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544 __PRINT1(_L("Bytes still to be read: %d\n"), aBytes); |
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545 iLdd.ReadOneOrMore(status, OutEndpoint, iDiscardBuf, bufsize); |
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546 User::WaitForRequest(status); |
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547 TInt err = status.Int(); |
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548 if (err != KErrNone) |
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549 { |
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550 // Bad. |
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551 break; |
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552 } |
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553 aBytes -= iDiscardBuf.Length(); |
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554 } |
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555 } |
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556 |
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557 /** |
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558 Called by the protocol to determine how many bytes of data are available in the read buffer. |
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559 |
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560 @return The number of bytes available in the read buffer |
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561 */ |
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562 TInt CBulkOnlyTransportUsbcLdd::BytesAvailable() |
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563 { |
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564 TInt bytes = 0; |
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565 TInt err = iLdd.QueryReceiveBuffer(OutEndpoint, bytes); |
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566 if (err != KErrNone) |
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567 bytes = 0; |
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568 return bytes; |
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569 } |
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570 |
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571 |
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572 void CBulkOnlyTransportUsbcLdd::StallEndpointAndWaitForClear() |
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573 { |
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574 __FNLOG("CBulkOnlyTransportUsbcLdd::StallEndpointAndWaitForClear"); |
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575 |
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576 // Now stall this endpoint |
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577 __PRINT1(_L("Stalling endpoint %d"), InEndpoint); |
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578 TInt r = iLdd.HaltEndpoint(InEndpoint); |
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579 if (r != KErrNone) |
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580 { |
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581 __PRINT2(_L("Error: stalling ep %d failed: %d"), InEndpoint, r); |
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582 } |
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583 TEndpointState ep_state; |
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584 TInt i = 0; |
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585 do |
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586 { |
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587 // Wait for 10ms before checking the ep status |
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588 User::After(10000); |
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589 iLdd.EndpointStatus(InEndpoint, ep_state); |
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590 if (++i >= 550) |
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591 { |
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592 // 5.5 secs should be enough (see 9.2.6.1 Request Processing Timing) |
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593 __PRINT1(_L("Error: Checked for ep %d de-stall for 5.5s - giving up now"), InEndpoint); |
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594 // We can now only hope for a Reset Recovery |
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595 return; |
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596 } |
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597 } while ((ep_state == EEndpointStateStalled) && iStarted); |
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598 __PRINT2(_L("Checked for ep %d de-stall: %d time(s)"), InEndpoint, i); |
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599 } |
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600 |
|
601 |
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602 /** |
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603 Read CBW data (KCbwLength) from the host into the read buffer. |
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604 */ |
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605 void CBulkOnlyTransportUsbcLdd::ReadCBW() |
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606 { |
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607 __FNLOG("CBulkOnlyTransportUsbcLdd::ReadCBW"); |
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608 if (IsActive()) |
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609 { |
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610 __PRINT(_L("Still active\n")); |
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611 __ASSERT_DEBUG(EFalse, User::Panic(KUsbMsSvrPncCat, EMsBulkOnlyStillActive)); |
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612 return; |
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613 } |
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614 |
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615 iCbwBuf.SetMax(); |
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616 iLdd.ReadUntilShort(iStatus, OutEndpoint, iCbwBuf, KCbwLength); |
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617 |
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618 iCurrentState = EWaitForCBW; |
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619 SetActive(); |
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620 } |
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621 |
|
622 void CBulkOnlyTransportUsbcLdd::ExpireData(TAny* /*aAddress*/) |
|
623 { |
|
624 // Intentionally left blank |
|
625 } |
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626 |
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627 void CBulkOnlyTransportUsbcLdd::ProcessCbwEvent() |
|
628 { |
|
629 DecodeCBW(); |
|
630 } |
|
631 |
|
632 |
|
633 /** |
|
634 Request data form the host for the protocol |
|
635 |
|
636 @param aLength amount of data (in bytes) to be received from the host |
|
637 */ |
|
638 void CBulkOnlyTransportUsbcLdd::ReadData(TUint aLength) |
|
639 { |
|
640 __FNLOG("CBulkOnlyTransportUsbcLdd::ReadData"); |
|
641 if (IsActive()) |
|
642 { |
|
643 __PRINT(_L("Still active\n")); |
|
644 __ASSERT_DEBUG(EFalse, User::Panic(KUsbMsSvrPncCat, EMsBulkOnlyStillActive)); |
|
645 return; |
|
646 } |
|
647 |
|
648 SetReadDataBufPtr(aLength); |
|
649 iLdd.Read(iStatus, OutEndpoint, iReadBufPtr, aLength); |
|
650 |
|
651 iCurrentState = EReadingData; |
|
652 SetActive(); |
|
653 } |
|
654 |
|
655 void CBulkOnlyTransportUsbcLdd::WriteUsb(TRequestStatus& aStatus, TPtrC8& aDes, TUint aLength, TBool aZlpRequired) |
|
656 { |
|
657 iLdd.Write(aStatus, InEndpoint, aDes, aLength, aZlpRequired); |
|
658 } |
|
659 |
|
660 void CBulkOnlyTransportUsbcLdd::SetCbwPtr() |
|
661 { |
|
662 iCbwBufPtr.Set(iCbwBuf.Ptr(), iCbwBuf.Length()); |
|
663 } |
|
664 |
|
665 TPtr8& CBulkOnlyTransportUsbcLdd::SetCommandBufPtr(TUint aLength) |
|
666 { |
|
667 iCommandBufPtr.Set((TUint8*) iCommandBuf.Ptr(), aLength, aLength ); |
|
668 return iCommandBufPtr; |
|
669 } |
|
670 |
|
671 void CBulkOnlyTransportUsbcLdd::SetReadDataBufPtr(TUint aLength) //Write10(Host->Device |
|
672 { |
|
673 if (iSwap) |
|
674 { |
|
675 iDataBuf1.SetLength(aLength); |
|
676 iReadBufPtr.Set(iDataBuf1.LeftTPtr(iDataBuf1.Length())); |
|
677 iSwap = EFalse; |
|
678 } |
|
679 else |
|
680 { |
|
681 iDataBuf2.SetLength(aLength); |
|
682 iReadBufPtr.Set(iDataBuf2.LeftTPtr(iDataBuf2.Length())); |
|
683 iSwap = ETrue; |
|
684 } |
|
685 } |
|
686 |
|
687 TPtr8& CBulkOnlyTransportUsbcLdd::SetDataBufPtr() //Read10(Device->Host) |
|
688 { |
|
689 if (iSwap) |
|
690 { |
|
691 iDataBufPtr.Set((TUint8*) iDataBuf1.Ptr(), KMaxBufSize, KMaxBufSize); |
|
692 iSwap = EFalse; |
|
693 } |
|
694 else |
|
695 { |
|
696 iDataBufPtr.Set((TUint8*) iDataBuf2.Ptr(), KMaxBufSize, KMaxBufSize); |
|
697 iSwap = ETrue; |
|
698 } |
|
699 return iDataBufPtr; |
|
700 } |
|
701 |
|
702 void CBulkOnlyTransportUsbcLdd::SetPaddingBufPtr(TUint aLength) |
|
703 { |
|
704 iPaddingBufPtr.Set((TUint8*) iBuf.Ptr(), aLength, aLength ); |
|
705 } |
|
706 |
|
707 |
|
708 void CBulkOnlyTransportUsbcLdd::SetCswBufPtr(TUint aLength) |
|
709 { |
|
710 iCswBufPtr.Set((TUint8*) iCswBuf.Ptr(), aLength, aLength ); |
|
711 } |
|
712 |
|
713 void CBulkOnlyTransportUsbcLdd::ProcessReadingDataEvent() |
|
714 { |
|
715 TInt ret = KErrNone; |
|
716 FOREVER |
|
717 { |
|
718 if (iReadSetUp) |
|
719 { |
|
720 ret = iProtocol->ReadComplete(KErrNone); |
|
721 } |
|
722 |
|
723 TUint deviceDataLength = iBufSize; // This is the amount (maximum in case of SC Ldd) to be read next. |
|
724 |
|
725 if(ret == KErrCompletion) |
|
726 { |
|
727 // The protocol has indicated with KErrCompletion that sufficient |
|
728 // data is available in the buffer to process the transfer immediately. |
|
729 |
|
730 iDataResidue -= iReadBufPtr.Length(); |
|
731 SetReadDataBufPtr(deviceDataLength); |
|
732 |
|
733 iLdd.Read(iStatus, OutEndpoint, iReadBufPtr, deviceDataLength); |
|
734 User::WaitForRequest(iStatus); |
|
735 if (iStatus != KErrNone) |
|
736 { |
|
737 // An error occurred - halt endpoints for reset recovery |
|
738 __PRINT1(_L("Error %d in EReadingData, halt endpoints \n"), iStatus.Int()); |
|
739 SetPermError(); |
|
740 return; |
|
741 } |
|
742 } |
|
743 else if(ret == KErrNotReady) |
|
744 { |
|
745 // The protocol has indicated with KErrNotReady that insufficient |
|
746 // data is available in the buffer, so should wait for it to arrive |
|
747 |
|
748 iDataResidue -= iReadBufPtr.Length(); |
|
749 ReadData(deviceDataLength); |
|
750 break; |
|
751 } |
|
752 else |
|
753 { |
|
754 // The protocol has indicated that transfer is |
|
755 // complete, so send the CSW response to the host. |
|
756 iDataResidue -= iReadBufPtr.Length(); |
|
757 iReadSetUp = EFalse; |
|
758 |
|
759 if (ret != KErrNone) |
|
760 { |
|
761 iCmdStatus = ECommandFailed; |
|
762 } |
|
763 |
|
764 if (iDataResidue) |
|
765 { |
|
766 __PRINT(_L("Discarding residue")); |
|
767 // we have to read as much data as available that host PC sends; |
|
768 // otherwise, bulk-out endpoint will need to keep sending NAK back. |
|
769 ReadAndDiscardData(iDataResidue); |
|
770 } |
|
771 SendCSW(iCbwTag, iDataResidue, iCmdStatus); |
|
772 break; |
|
773 } |
|
774 } |
|
775 |
|
776 } |
|
777 |
|
778 void CBulkOnlyTransportUsbcLdd::DiscardData(TUint aLength) |
|
779 { |
|
780 iBuf.SetLength(KBOTMaxBufSize); |
|
781 TUint c = 0; |
|
782 TRequestStatus status; |
|
783 while (c < aLength) |
|
784 { |
|
785 TInt len; |
|
786 if (aLength - c > KBOTMaxBufSize) |
|
787 { |
|
788 len = KBOTMaxBufSize; |
|
789 } |
|
790 else |
|
791 { |
|
792 len = aLength - c; |
|
793 } |
|
794 |
|
795 iLdd.Read(status, OutEndpoint, iBuf, len); |
|
796 User::WaitForRequest(status); |
|
797 c += KBOTMaxBufSize; |
|
798 } |
|
799 } |
|
800 |
|
801 void CBulkOnlyTransportUsbcLdd::WriteToClient(TUint aLength) |
|
802 { |
|
803 SetDataBufPtr(); |
|
804 iLdd.Read(iStatus, OutEndpoint, iDataBufPtr, aLength); |
|
805 User::WaitForRequest(iStatus); |
|
806 iProtocol->ReadComplete(KErrGeneral); |
|
807 } |
|
808 |
|
809 #ifdef MSDC_MULTITHREADED |
|
810 void CBulkOnlyTransportUsbcLdd::GetBufferPointers(TPtr8& aDes1, TPtr8& aDes2) |
|
811 { |
|
812 aDes1.Set((TUint8*) iDataBuf1.Ptr(), KMaxBufSize, KMaxBufSize); |
|
813 aDes2.Set((TUint8*) iDataBuf2.Ptr(), KMaxBufSize, KMaxBufSize); |
|
814 } |
|
815 #endif |
|
816 |
|
817 void CBulkOnlyTransportUsbcLdd::Activate(TRequestStatus& aStatus, TUint& aDeviceState) |
|
818 { |
|
819 iLdd.AlternateDeviceStatusNotify(aStatus, aDeviceState); |
|
820 } |
|
821 |
|
822 |
|
823 void CBulkOnlyTransportUsbcLdd::Cancel() |
|
824 { |
|
825 iLdd.AlternateDeviceStatusNotifyCancel(); |
|
826 } |
|
827 |
|
828 |
|
829 |
|
830 |