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1 // Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // |
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15 |
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16 #include <e32std.h> |
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17 #include <e32base.h> |
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18 |
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19 #define __KERNEL_MODE__ |
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20 #include <kernel.h> |
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21 #undef __KERNEL_MODE__ |
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22 |
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23 #include <d32comm.h> |
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24 #include <e32ver.h> |
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25 |
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26 #include "d_comm.h" |
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27 #include <e32hal.h> |
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28 #include "DParams.h" |
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29 |
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30 const TUint KXoffSignal=0x80000000; |
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31 // |
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32 const TInt KInputHeldFree=(-1); |
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33 const TInt KInputHeld=(-2); |
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34 // |
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35 const TUint KTransmitting=0x01; |
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36 const TUint KBreaking=0x02; |
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37 const TUint KBreakPending=0x04; |
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38 // |
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39 enum TPanic |
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40 { |
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41 ESetConfigWhileRequestPending, |
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42 ESetSignalsSetAndClear, |
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43 EResetBuffers, |
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44 ESetReceiveBufferLength, |
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45 // EDoubleTxBufFill, |
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46 }; |
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47 |
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48 EXPORT_C DLogicalDevice *CreateLogicalDevice() |
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49 // |
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50 // Create a new device |
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51 // |
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52 { |
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53 return(new DDeviceComm); |
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54 } |
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55 |
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56 DDeviceComm::DDeviceComm() |
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57 // |
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58 // Constructor |
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59 // |
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60 { |
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61 //iParseMask=KDeviceAllowAll; |
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62 iParseMask=KDeviceAllowUnit|KDeviceAllowInfo; |
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63 iUnitsMask=0xffffffff; // Leave units decision to the driver |
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64 iVersion=TVersion(KCommsMajorVersionNumber,KCommsMinorVersionNumber,KCommsBuildVersionNumber); |
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65 } |
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66 |
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67 TInt DDeviceComm::Install() |
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68 // |
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69 // Install the device driver. |
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70 // |
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71 { |
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72 TPtrC name=_L("CommDCE"); |
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73 return(SetName(&name)); |
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74 } |
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75 |
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76 void DDeviceComm::GetCaps(TDes8 &aDes) const |
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77 // |
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78 // Return the Comm capabilities. |
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79 // |
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80 { |
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81 |
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82 TCapsDevCommV01 b; |
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83 b.version=iVersion; |
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84 aDes.FillZ(aDes.MaxLength()); |
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85 aDes.Copy((TUint8 *)&b,Min(aDes.MaxLength(),sizeof(b))); |
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86 } |
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87 |
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88 DLogicalChannel *DDeviceComm::CreateL() |
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89 // |
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90 // Create a channel on the device. |
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91 // |
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92 { |
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93 |
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94 return(new(ELeave) DChannelComm(this)); |
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95 } |
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96 |
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97 |
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98 #pragma warning( disable : 4705 ) // statement has no effect |
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99 #pragma warning( disable : 4355 ) // this used in intializer list |
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100 DChannelComm::DChannelComm(DLogicalDevice *aDevice) |
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101 // |
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102 // Constructor |
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103 // |
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104 : DLogicalChannel(aDevice) |
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105 { |
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106 |
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107 SetBehaviour(RBusDevComm::ERequestReadCancel| |
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108 RBusDevComm::ERequestWriteCancel| |
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109 RBusDevComm::ERequestBreakCancel| |
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110 RBusDevCommDCE::ERequestNotifySignalChangeCancel| |
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111 RBusDevCommDCE::ERequestNotifyFlowControlChangeCancel| |
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112 RBusDevCommDCE::ERequestNotifyConfigChangeCancel); |
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113 // |
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114 // Setup the default config |
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115 // |
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116 iConfig.iRate=DUMMYCONFIGRATE; |
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117 iConfig.iDataBits=DUMMYDATABITS; |
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118 iConfig.iStopBits=DUMMYSTOPBITS; |
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119 iConfig.iHandshake=DUMMYHANDSHAKE; |
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120 } |
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121 #pragma warning( default : 4705 ) |
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122 #pragma warning( disable : 4355 ) |
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123 |
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124 DChannelComm::~DChannelComm() |
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125 // |
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126 // Destructor |
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127 // |
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128 { |
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129 CompleteAll(KErrAbort); |
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130 delete iDriver; |
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131 } |
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132 |
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133 void DChannelComm::DoCreateL(TInt /*aUnit*/,CBase *aDriver,const TDesC * /*anInfo*/,const TVersion &aVer) |
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134 // |
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135 // Create the channel from the passed info. |
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136 // |
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137 { |
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138 iDriver=(DComm *)aDriver; // Must do this to ensure the driver is destroyed by the destructor |
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139 if (!User::QueryVersionSupported(TVersion(KCommsMajorVersionNumber,KCommsMinorVersionNumber,KCommsBuildVersionNumber),aVer)) |
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140 User::Leave(KErrNotSupported); |
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141 |
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142 // ((DComm *)aDriver)->SetComm(this); // Rog |
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143 } |
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144 |
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145 void DChannelComm::DoCancel(TInt aReqNo) |
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146 // |
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147 // Cancel an outstanding request. |
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148 // |
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149 { |
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150 |
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151 switch (aReqNo) |
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152 { |
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153 case RBusDevComm::ERequestRead: |
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154 iRxDataAvailablePending=EFalse; |
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155 break; |
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156 case RBusDevCommDCE::ERequestNotifySignalChange: |
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157 iSignalCount++; |
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158 iSignalNotifyPending=EFalse; |
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159 break; |
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160 case RBusDevCommDCE::ERequestNotifyFlowControlChange: |
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161 iFlowControlChangePending=EFalse; |
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162 break; |
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163 case RBusDevCommDCE::ERequestNotifyConfigChange: |
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164 iConfigChangePending=EFalse; |
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165 break; |
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166 default: |
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167 __ASSERT_ALWAYS(0,User::Invariant()); |
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168 } |
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169 } |
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170 |
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171 void DChannelComm::DoRequest(TInt aReqNo,TAny *a1,TAny *a2) |
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172 // |
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173 // Async requests. |
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174 // |
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175 { |
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176 aReqNo &= (~KDataAvailableNotifyFlag); |
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177 switch (aReqNo) |
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178 { |
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179 case RBusDevCommDCE::ERequestWrite: |
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180 { |
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181 __ASSERT_ALWAYS(iWritePending==EFalse,User::Invariant()); |
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182 iWritePending=ETrue; |
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183 iQueuedWrite.OneShotInMicroSeconds(KDummyTimeOut,DChannelComm::WriteCompleted,this); |
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184 } |
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185 break; |
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186 case RBusDevCommDCE::ERequestRead: // this is the RxDataAvailable notification. Base have chosen |
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187 // to use the enum for both this and Read(). |
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188 { |
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189 __ASSERT_ALWAYS(iRxDataAvailablePending==EFalse,User::Invariant()); |
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190 iRxDataAvailablePending=ETrue; |
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191 iQueuedRxDataAvailable.OneShotInMicroSeconds(KDummyTimeOut,DChannelComm::RxDataAvailableCompleted,this); |
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192 } |
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193 break; |
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194 case RBusDevCommDCE::ERequestNotifySignalChange: |
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195 { |
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196 __ASSERT_ALWAYS(iSignalNotifyPending==EFalse,User::Invariant()); |
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197 iSignalNotifyPending=ETrue; |
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198 switch (iSignalCount) |
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199 { |
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200 case 0: |
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201 case 2: |
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202 __ASSERT_ALWAYS(*((TUint*)a2) == (DUMMYSIGNALMASK),User::Invariant()); // and wait for cancel |
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203 break; |
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204 case 1: |
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205 __ASSERT_ALWAYS(*((TUint*)a2) == (DUMMYSIGNALMASK|KSignalBreak),User::Invariant());// and wait for cancel |
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206 break; |
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207 case 3: |
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208 case 4: |
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209 { |
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210 iSignals=(TUint*)a1; |
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211 iSignalMask=*((TUint*)a2); |
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212 iQueuedSignalNotify.OneShotInMicroSeconds(KDummyTimeOut,DChannelComm::SignalChangeCompleted,this); |
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213 break; |
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214 } |
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215 default: |
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216 __ASSERT_ALWAYS(0,User::Invariant()); |
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217 } |
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218 break; |
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219 case RBusDevCommDCE::ERequestNotifyFlowControlChange: |
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220 { |
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221 __ASSERT_ALWAYS(iFlowControlChangePending==EFalse,User::Invariant()); |
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222 iFlowControlChangePending=ETrue; |
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223 iQueuedFlowControl.OneShotInMicroSeconds(KDummyTimeOut,DChannelComm::FlowControlChangeCompleted,this); |
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224 } |
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225 break; |
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226 case RBusDevCommDCE::ERequestNotifyConfigChange: |
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227 { |
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228 __ASSERT_ALWAYS(iConfigChangePending==EFalse,User::Invariant()); |
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229 iConfigChangePending=ETrue; |
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230 iConfigPointer = (TCommNotificationPckg*)a1; |
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231 |
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232 iQueuedConfigChange.OneShotInMicroSeconds(KDummyTimeOut,DChannelComm::ConfigChangeCompleted,this); |
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233 } |
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234 break; |
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235 default: |
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236 Complete(aReqNo,KErrNotSupported); |
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237 } |
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238 } |
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239 } |
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240 |
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241 TInt DChannelComm::DoControl(TInt aFunction,TAny *a1,TAny* /*a2*/) |
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242 // |
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243 // Sync requests. |
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244 // |
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245 { |
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246 TInt r=KErrNone; |
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247 switch (aFunction) |
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248 { |
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249 case RBusDevCommDCE::EControlFlowControlStatus: |
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250 { |
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251 iFlowControl=DUMMYFLOWCONTROLSTATUS; |
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252 *((TFlowControl*)a1) = iFlowControl; |
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253 } |
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254 break; |
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255 case RBusDevCommDCE::EControlSetConfig: |
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256 break; |
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257 default: |
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258 r=KErrNotSupported; |
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259 } |
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260 return(r); |
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261 } |
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262 |
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263 |
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264 void DChannelComm::SignalChangeCompleted(TAny* aChannel,TInt) |
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265 { |
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266 DChannelComm* dc = (DChannelComm*)aChannel; |
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267 dc->SetSignals(); |
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268 dc->CompleteReq(RBusDevCommDCE::ERequestNotifySignalChange); |
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269 } |
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270 void DChannelComm::ConfigChangeCompleted(TAny* aChannel,TInt) |
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271 { |
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272 DChannelComm* dc = (DChannelComm*)aChannel; |
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273 dc->ChangeConfig(); |
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274 dc->CompleteReq(RBusDevCommDCE::ERequestNotifyConfigChange); |
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275 } |
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276 void DChannelComm::RxDataAvailableCompleted(TAny* aChannel,TInt) |
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277 { |
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278 ((DChannelComm*)aChannel)->CompleteReq(RBusDevCommDCE::ERequestRead); |
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279 } |
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280 void DChannelComm::FlowControlChangeCompleted(TAny* aChannel,TInt) |
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281 { |
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282 ((DChannelComm*)aChannel)->CompleteReq(RBusDevCommDCE::ERequestNotifyFlowControlChange); |
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283 } |
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284 void DChannelComm::WriteCompleted(TAny* aChannel,TInt) |
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285 { |
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286 ((DChannelComm*)aChannel)->CompleteReq(RBusDevCommDCE::ERequestWrite); |
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287 } |
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288 |
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289 void DChannelComm::CompleteReq(TInt aReqNo) |
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290 { |
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291 |
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292 Complete(aReqNo); |
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293 } |
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294 |
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295 void DChannelComm::SetSignals() |
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296 { |
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297 switch(iSignalCount++) |
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298 { |
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299 case 3: |
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300 (*iSignals)=DUMMYSIGNALS; |
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301 break; |
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302 case 4: |
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303 (*iSignals)=(KSignalBreak|KBreakChanged); |
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304 break; |
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305 default: |
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306 __ASSERT_ALWAYS(0,User::Invariant()); |
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307 }; |
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308 iSignalNotifyPending=EFalse; |
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309 } |
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310 |
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311 void DChannelComm::ChangeConfig() |
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312 { |
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313 iConfig.iChangedMembers = DUMMYCHANGED; |
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314 iConfigPointer->FillZ(iConfigPointer->MaxLength()); |
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315 TInt len=Min(iConfigPointer->MaxLength(),sizeof(iConfig)); |
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316 iConfigPointer->Copy((TUint8 *)&iConfig,len); |
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317 } |
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318 |
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319 |