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1 /* |
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2 * Copyright (c) 2007 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 "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 #ifdef __WINS__ |
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20 #error - this driver cannot be built for emulation |
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21 #endif |
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22 |
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23 #include <e32def.h> |
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24 #include <e32cmn.h> |
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25 #include <kernel.h> |
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26 #include <kern_priv.h> |
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27 #include <arm.h> |
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28 |
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29 #include "TrkXtiComm.h" |
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30 #include "TrkXtiDriver.h" |
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31 |
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32 #define KTrkAppSecurUid 0x200170BB |
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33 #define KTrkExeSecurUid 0x200159E2 |
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34 |
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35 // |
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36 // Static function definitions |
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37 // |
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38 |
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39 |
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40 // |
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41 // |
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42 // DTrkXtiDriverFactory implementation |
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43 // |
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44 // |
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45 |
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46 // |
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47 // DTrkXtiDriverFactory constructor |
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48 // |
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49 DTrkXtiDriverFactory::DTrkXtiDriverFactory() |
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50 { |
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51 iVersion = TVersion(KMajorXtiVersionNumber, KMinorXtiVersionNumber, KBuildXtiVersionNumber); |
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52 } |
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53 |
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54 // |
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55 // DTrkXtiDriverFactory::Create |
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56 // |
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57 TInt DTrkXtiDriverFactory::Create(DLogicalChannelBase*& aChannel) |
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58 { |
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59 if (iOpenChannels != 0) |
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60 return KErrInUse; // a channel is already open |
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61 |
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62 aChannel = new DTrkXtiChannel(this); |
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63 |
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64 return aChannel ? KErrNone : KErrNoMemory; |
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65 } |
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66 |
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67 // |
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68 // DTrkXtiDriverFactory::Install |
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69 // |
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70 TInt DTrkXtiDriverFactory::Install() |
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71 { |
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72 return(SetName(&KTrkXtiDriverName)); |
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73 } |
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74 |
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75 // |
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76 // DTrkXtiDriverFactory::Install |
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77 // |
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78 void DTrkXtiDriverFactory::GetCaps(TDes8& aDes) const |
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79 { |
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80 TCapsTrkXtiDriver b; |
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81 b.iVersion = TVersion(KMajorXtiVersionNumber, KMinorXtiVersionNumber, KBuildXtiVersionNumber); |
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82 |
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83 Kern::InfoCopy(aDes,(TUint8*)&b, sizeof(b)); |
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84 } |
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85 |
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86 |
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87 // |
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88 // |
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89 // DTrkXtiChannel implementation |
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90 // |
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91 // |
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92 |
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93 // |
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94 // DTrkXtiChannel constructor |
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95 // |
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96 DTrkXtiChannel::DTrkXtiChannel(DLogicalDevice* aLogicalDevice) |
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97 : iRxPendingMsg(EFalse), |
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98 iInterruptId(76) |
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99 { |
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100 |
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101 LOG_MSG("DTrkXtiChannel::DTrkXtiChannel()"); |
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102 |
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103 iDevice = aLogicalDevice; |
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104 |
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105 iClientThread = &Kern::CurrentThread(); |
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106 TInt err = iClientThread->Open(); |
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107 |
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108 |
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109 LOG_MSG("DTrkXtiChannel::DTrkXtiChannel() End"); |
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110 } |
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111 |
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112 // |
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113 // DTrkXtiChannel destructor |
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114 // |
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115 DTrkXtiChannel::~DTrkXtiChannel() |
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116 { |
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117 LOG_MSG("DTrkXtiChannel::~DTrkXtiChannel()"); |
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118 |
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119 Kern::SafeClose((DObject*&)iClientThread, NULL); |
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120 |
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121 if (iLock) |
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122 iLock->Close(NULL); |
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123 } |
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124 |
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125 // |
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126 // DTrkXtiChannel::DoCreate |
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127 // |
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128 TInt DTrkXtiChannel::DoCreate(TInt /*aUnit*/, const TDesC* /*anInfo*/, const TVersion& aVer) |
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129 { |
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130 LOG_MSG("DTrkXtiChannel::DoCreate()"); |
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131 |
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132 if (!Kern::QueryVersionSupported(TVersion(KMajorXtiVersionNumber, KMinorXtiVersionNumber, KBuildXtiVersionNumber), aVer)) |
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133 return KErrNotSupported; |
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134 |
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135 //Setup the driver for receiving client messages |
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136 iDFCQue = NULL; |
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137 TBuf8<KMaxInfoName> xtiDFC = _L8("XTI DFC");; |
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138 |
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139 TInt err = Kern::DfcQCreate(iDFCQue, 27, &xtiDFC); |
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140 if (err == KErrNone) |
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141 { |
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142 SetDfcQ(iDFCQue); |
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143 } |
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144 else |
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145 { |
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146 SetDfcQ(Kern::DfcQue0()); |
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147 } |
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148 |
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149 iMsgQ.Receive(); |
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150 |
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151 // create subscriber and subscribe to receive trk messages from TraceCore |
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152 iTrkXtiSubscriber = new DTrkXtiSubscriber; |
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153 if (!iTrkXtiSubscriber) |
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154 return KErrNoMemory; |
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155 |
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156 err = iTrkXtiSubscriber->Create(this, iClientThread); |
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157 if (err != KErrNone) |
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158 return err; |
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159 |
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160 err = Kern::SemaphoreCreate(iLock, _L("TrkXtiDriverWriteLock"), 1 /* Initial count */); |
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161 if (err != KErrNone) |
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162 return err; |
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163 |
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164 return KErrNone; |
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165 } |
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166 |
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167 // |
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168 // DTrkXtiChannel::DoCancel |
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169 // |
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170 void DTrkXtiChannel::DoCancel(TInt aReqNo) |
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171 { |
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172 LOG_MSG("DTrkXtiChannel::DoCancel()"); |
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173 |
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174 switch(aReqNo) |
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175 { |
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176 case RTrkXtiDriver::ERequestReadCancel: |
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177 { |
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178 Kern::RequestComplete(iClientThread, iRxRequestStatus, KErrCancel); |
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179 iRxClientBuffer = NULL; |
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180 iRxRequestStatus = NULL; |
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181 iRxClientBufferLength = 0; |
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182 } |
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183 break; |
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184 } |
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185 |
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186 } |
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187 |
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188 // |
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189 // DTrkXtiChannel::DoRequest |
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190 // |
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191 void DTrkXtiChannel::DoRequest(TInt aReqNo, TRequestStatus* aStatus, TAny* a1, TAny* a2) |
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192 { |
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193 LOG_MSG("DTrkXtiChannel::DoRequest()"); |
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194 |
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195 switch(aReqNo) |
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196 { |
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197 case RTrkXtiDriver::ERequestRead: |
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198 { |
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199 iRxRequestStatus = aStatus; |
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200 iRxClientBuffer = a1; |
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201 iRxClientBufferLength = (TUint32)a2; |
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202 |
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203 if (iRxPendingMsg) |
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204 { |
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205 TInt err = Kern::ThreadDesWrite(iClientThread, iRxClientBuffer, iRxPendingMsgBuffer, 0, KChunkShiftBy0, iClientThread); |
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206 Kern::RequestComplete(iClientThread, iRxRequestStatus, err); |
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207 |
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208 iRxRequestStatus = NULL; |
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209 iRxPendingMsg = EFalse; |
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210 } |
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211 |
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212 break; |
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213 } |
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214 default: |
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215 Kern::RequestComplete(iClientThread, aStatus, KErrNotSupported); |
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216 } |
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217 } |
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218 |
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219 // |
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220 // DTrkXtiChannel::DoControl |
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221 // |
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222 TInt DTrkXtiChannel::DoControl(TInt aFunction, TAny* a1, TAny* a2) |
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223 { |
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224 LOG_MSG("DTrkXtiChannel::DoControl()"); |
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225 |
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226 TInt err = KErrNone; |
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227 |
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228 switch(aFunction) |
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229 { |
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230 case RTrkXtiDriver::EControlWrite: |
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231 { |
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232 //lock the Semaphore so that write doesn't happen when a write is already in progress. |
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233 Kern::SemaphoreWait(*iLock); |
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234 err = DoWrite((TUint32)a1, a2); |
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235 Kern::SemaphoreSignal(*iLock); |
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236 break; |
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237 } |
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238 default: |
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239 { |
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240 return KErrGeneral; |
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241 } |
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242 |
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243 } |
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244 if (KErrNone != err) |
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245 { |
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246 LOG_MSG2("Error %d from control function", err); |
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247 } |
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248 return err; |
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249 } |
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250 |
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251 // |
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252 // DTrkXtiChannel::HandleMsg |
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253 // |
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254 void DTrkXtiChannel::HandleMsg(TMessageBase* aMsg) |
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255 { |
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256 LOG_MSG("DTrkXtiChannel::HandleMsg()"); |
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257 |
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258 TThreadMessage& m = *(TThreadMessage*)aMsg; |
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259 TInt id = m.iValue; |
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260 |
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261 |
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262 if (id == (TInt)ECloseMsg) |
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263 { |
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264 if (iTrkXtiSubscriber) |
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265 { |
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266 Kern::SemaphoreWait(*iLock); |
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267 delete iTrkXtiSubscriber; |
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268 iTrkXtiSubscriber = NULL; |
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269 Kern::SemaphoreSignal(*iLock); |
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270 } |
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271 m.Complete(KErrNone, EFalse); |
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272 return; |
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273 } |
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274 |
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275 if (id == KMaxTInt) |
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276 { |
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277 // DoCancel |
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278 DoCancel(m.Int0()); |
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279 m.Complete(KErrNone, ETrue); |
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280 return; |
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281 } |
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282 |
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283 if (id < 0) |
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284 { |
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285 // DoRequest |
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286 TRequestStatus* pStatus = (TRequestStatus*)m.Ptr0(); |
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287 DoRequest(~id, pStatus, m.Ptr1(), m.Ptr2()); |
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288 m.Complete(KErrNone, ETrue); |
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289 } |
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290 else |
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291 { |
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292 // DoControl |
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293 TInt err = DoControl(id, m.Ptr0(), m.Ptr1()); |
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294 m.Complete(err, ETrue); |
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295 } |
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296 } |
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297 |
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298 // |
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299 // DTrkXtiChannel::DoWrite |
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300 // |
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301 TInt DTrkXtiChannel::DoWrite(TUint32 aLength, TAny* a2) |
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302 { |
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303 LOG_MSG("DTrkXtiChannel::DoWrite()"); |
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304 |
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305 TInt err = KErrNone; |
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306 |
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307 err = Kern::ThreadDesRead(iClientThread, a2, iTxBuffer, 0, KChunkShiftBy0); |
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308 |
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309 if (err == KErrNone) |
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310 { |
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311 err = WriteXtiChannel(iTxBuffer); |
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312 } |
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313 return err; |
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314 } |
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315 |
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316 // |
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317 // DTrkXtiChannel::WriteXtiChannel |
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318 // |
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319 // This function writes all the data in the descriptor in one message |
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320 TInt DTrkXtiChannel::WriteXtiChannel(TDesC8& aDes) |
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321 { |
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322 TInt err = KErrNone; |
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323 err = iTrkXtiSubscriber->Send(aDes); |
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324 |
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325 return err; |
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326 } |
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327 |
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328 |
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329 |
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330 |
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331 |
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332 // |
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333 // DTrkXtiChannel::DoCompleteRx |
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334 // |
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335 void DTrkXtiChannel::DoCompleteRx(const TDesC8& aMessage) |
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336 { |
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337 LOG_MSG("DTrkXtiChannel::DoCompleteRx()"); |
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338 |
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339 // If there is a pending read request, complete the request with this message. |
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340 // Otherwise store the message, ideally we should queue the messages, but having |
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341 // a large buffer is failing to initialize at the startup. |
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342 // For now, we will just store only one message |
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343 // If for some reason, TRK is waiting on something and doesn't read for a while, |
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344 // then its possible that we will loose messages. |
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345 Kern::SemaphoreWait(*iLock); |
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346 if (iRxRequestStatus) |
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347 { |
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348 TInt err = Kern::ThreadDesWrite(iClientThread, iRxClientBuffer, aMessage, 0, KChunkShiftBy0, iClientThread); |
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349 Kern::RequestComplete(iClientThread, iRxRequestStatus, err); |
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350 |
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351 iRxRequestStatus = NULL; |
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352 } |
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353 else if (!iRxPendingMsg) |
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354 { |
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355 iRxPendingMsgBuffer.Copy(aMessage); |
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356 iRxPendingMsg = ETrue; |
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357 } |
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358 Kern::SemaphoreSignal(*iLock); |
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359 } |
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360 |
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361 DECLARE_STANDARD_LDD() |
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362 { |
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363 return new DTrkXtiDriverFactory; |
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364 } |