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1 // Copyright (c) 2010 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 // Guest Video Driver Implementation |
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15 |
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16 #include <e32cmn.h> |
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17 #include <e32des8.h> |
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18 #include <e32std.h> |
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19 #include <e32debug.h> |
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20 |
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21 #include <graphics/guestvideodriver.h> |
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22 #include <graphics/guestvideodriverprotocol.h> |
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23 #include <graphics/guestvideodriverinterfaceconstants.h> |
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24 |
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25 #include "remotefunctioncall.h" |
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26 #include "serializedfunctioncall.h" |
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27 |
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28 // tracing |
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29 #ifdef _DEBUG |
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30 #include <e32debug.h> |
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31 #define UTIL_TRACE(fmt, args...) RDebug::Printf(fmt, ##args) |
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32 #define DRVRPANIC_ASSERT(condition, panic) if (!(condition)) { DriverPanic(panic, #condition, __LINE__); } |
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33 #define DRVRPANIC_ASSERT_DEBUG(condition, panic) if (!(condition)) { DriverPanic(panic, #condition, __LINE__); } |
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34 #else |
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35 #define UTIL_TRACE(fmt, args...) |
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36 #define DRVRPANIC_ASSERT(condition, panic) if (!(condition)) { DriverPanic(panic, NULL, __LINE__); } |
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37 #define DRVRPANIC_ASSERT_DEBUG(condition, panic) |
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38 #endif |
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39 |
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40 //Max supported request size |
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41 const TUint32 KMaxRequestSize( VVI_PARAMETERS_INPUT_MEMORY_SIZE ); |
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42 |
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43 typedef enum |
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44 { |
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45 EDriverPanicSendBufferFailed=1, |
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46 EDriverPanicInvalidOperationType, |
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47 EDriverPanicOperationDataTooBig, |
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48 EDriverPanicDriverAlreadyOpen, |
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49 EDriverPanicCreateDriverChannelFailed, |
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50 EDriverPanicCreateThreadLockFailed, |
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51 EDriverPanicSendBufferFnDoesNotHaveThreadLock, |
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52 EDriverPanicBufferCommandFnDoesNotHaveThreadLock, |
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53 EDriverPanicDriverNotOpenForExecuteCommandFn, |
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54 EDriverPanicRequestStatusErrorInExecuteCommandFn, // 10 |
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55 EDriverPanicBufferWriteFailed, |
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56 } TDriverPanic; |
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57 |
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58 _LIT(KDriverPanicCategory, "Guest VidDrv"); |
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59 |
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60 void DriverPanic(TDriverPanic aPanicCode, char* aCondition, TInt aLine) |
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61 { |
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62 UTIL_TRACE("Guest Video Driver Panic %d for failed Assert (%s), at guestvideodriver.cpp:%d", aPanicCode, aCondition, aLine); |
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63 |
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64 User::Panic(KDriverPanicCategory, aPanicCode); |
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65 } |
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66 |
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67 |
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68 // ============================ MEMBER FUNCTIONS =============================== |
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69 |
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70 // ----------------------------------------------------------------------------- |
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71 // RGuestVideoDriver::RGuestVideoDriver |
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72 // ----------------------------------------------------------------------------- |
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73 // |
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74 EXPORT_C RGuestVideoDriver::RGuestVideoDriver() : iIsOpen(EFalse), iProcessId(0) |
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75 { |
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76 } |
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77 |
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78 // ----------------------------------------------------------------------------- |
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79 // RGuestVideoDriver::Open |
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80 // ----------------------------------------------------------------------------- |
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81 // |
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82 EXPORT_C TInt RGuestVideoDriver::Open() |
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83 { |
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84 UTIL_TRACE("RGuestVideoDriver::Open start iProcessId=0x%x, iIsOpen=%d", iProcessId, iIsOpen); |
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85 DRVRPANIC_ASSERT(iIsOpen == EFalse, EDriverPanicDriverAlreadyOpen); |
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86 iProcessId = RProcess().Id(); |
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87 TInt error = iThreadLock.CreateLocal(EOwnerProcess); |
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88 DRVRPANIC_ASSERT_DEBUG( error == KErrNone, EDriverPanicCreateThreadLockFailed); |
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89 if (!error) |
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90 { |
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91 error = DoCreate( |
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92 GuestVideoDriver::KDeviceName, |
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93 TVersion( GuestVideoDriver::KMajorVer, |
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94 GuestVideoDriver::KMinorVer, |
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95 GuestVideoDriver::KBuildVer ), |
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96 KNullUnit, |
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97 NULL, |
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98 NULL); |
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99 DRVRPANIC_ASSERT_DEBUG( error == KErrNone, EDriverPanicCreateDriverChannelFailed); |
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100 if (!error) |
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101 { |
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102 iIsOpen = ETrue; |
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103 } |
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104 } |
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105 UTIL_TRACE("RGuestVideoDriver::Open end iProcessId=0x%x, error=%d", iProcessId, error); |
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106 return error; |
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107 } |
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108 |
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109 // ----------------------------------------------------------------------------- |
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110 // RGuestVideoDriver::~RGuestVideoDriver |
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111 // ----------------------------------------------------------------------------- |
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112 // |
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113 EXPORT_C RGuestVideoDriver::~RGuestVideoDriver() |
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114 { |
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115 UTIL_TRACE("RGuestVideoDriver::~RGuestVideoDriver iProcessId=0x%x", iProcessId); |
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116 iThreadLock.Close(); |
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117 } |
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118 |
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119 // ----------------------------------------------------------------------------- |
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120 // RGuestVideoDriver::ExecuteCommand |
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121 // Syncrhonous version with local buffering |
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122 // ----------------------------------------------------------------------------- |
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123 // |
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124 EXPORT_C void RGuestVideoDriver::ExecuteCommand(RemoteFunctionCallData& aRequestData) |
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125 { |
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126 DRVRPANIC_ASSERT(iIsOpen, EDriverPanicDriverNotOpenForExecuteCommandFn); |
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127 DRVRPANIC_ASSERT( (RemoteFunctionCallData::EOpRequestWithReply == aRequestData.Header().iOpType) || |
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128 (RemoteFunctionCallData::EOpRequest == aRequestData.Header().iOpType), |
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129 EDriverPanicInvalidOperationType); |
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130 |
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131 //Set thread and process id |
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132 aRequestData.SetThreadInformation(iProcessId, RThread().Id()); |
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133 TBool sendNow = (RemoteFunctionCallData::EOpRequest != aRequestData.Header().iOpType); |
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134 if (!sendNow) |
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135 { |
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136 iThreadLock.Wait(); |
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137 while (!BufferCommand(aRequestData)) |
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138 { |
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139 // Flush any queued commands & retry |
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140 if (iBuffer.Length()) |
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141 { |
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142 SendBuffer(); |
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143 } |
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144 else |
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145 { // Too big for buffer |
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146 sendNow = ETrue; |
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147 break; |
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148 } |
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149 } |
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150 iThreadLock.Signal(); |
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151 } |
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152 |
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153 if (sendNow) |
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154 { |
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155 // Maintain order of operations by flushing queue |
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156 iThreadLock.Wait(); |
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157 if (iBuffer.Length()) |
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158 { |
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159 SendBuffer(); |
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160 } |
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161 iThreadLock.Signal(); |
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162 |
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163 TRequestStatus status; |
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164 TPckg<RemoteFunctionCallData> data(aRequestData); |
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165 DRVRPANIC_ASSERT(data().SerialisedLength() <= KMaxRequestSize, EDriverPanicOperationDataTooBig); |
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166 UTIL_TRACE("RGuestVideoDriver::ExecuteCommand direct send, req length=%d", data().SerialisedLength()); |
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167 DoRequest(GuestVideoDriver::ERequestExecuteCommand, status, (TAny*)&data); |
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168 User::WaitForRequest(status); |
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169 // status <> 0 if write of reply data failed |
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170 DRVRPANIC_ASSERT_DEBUG(status.Int() == KErrNone, EDriverPanicRequestStatusErrorInExecuteCommandFn); |
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171 } |
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172 } |
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173 |
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174 // Flush video Command buffer |
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175 EXPORT_C void RGuestVideoDriver::Flush() |
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176 { |
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177 iThreadLock.Wait(); |
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178 if (iIsOpen && iBuffer.Length()) |
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179 { |
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180 SendBuffer(); |
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181 } |
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182 iThreadLock.Signal(); |
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183 } |
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184 |
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185 |
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186 // ----------------------------------------------------------------------------- |
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187 // RGuestVideoDriver::BufferCommand |
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188 // ----------------------------------------------------------------------------- |
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189 // |
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190 TBool RGuestVideoDriver::BufferCommand( RemoteFunctionCallData& aRequestData ) |
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191 { |
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192 DRVRPANIC_ASSERT_DEBUG(iThreadLock.IsHeld(), EDriverPanicBufferCommandFnDoesNotHaveThreadLock); |
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193 TBool result = EFalse; |
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194 SerializedFunctionCall data( aRequestData ); |
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195 |
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196 const TUint32 len = aRequestData.SerialisedLength(); |
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197 const TInt alignmentAdjIndex( RemoteFunctionCallData::AlignIndex( iBuffer.Length(), 4 ) ); |
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198 |
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199 if ( (alignmentAdjIndex + len) < iBuffer.MaxLength() ) |
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200 { |
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201 //There is enough space left on local buffer |
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202 iBuffer.SetLength( alignmentAdjIndex + len ); |
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203 TPtrC8 serialisedDataPtr = iBuffer.Right( len ); |
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204 TInt wlen = data.WriteToBuffer( const_cast<TUint8*>(serialisedDataPtr.Ptr()), len, 0 ); |
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205 DRVRPANIC_ASSERT(wlen == len, EDriverPanicBufferWriteFailed); |
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206 result = ETrue; |
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207 } |
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208 |
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209 UTIL_TRACE("RGuestVideoDriver::BufferCommand length=%d, Req len=%d, result=%d", |
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210 iBuffer.Length(), len, result); |
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211 return result; |
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212 } |
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213 |
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214 // ----------------------------------------------------------------------------- |
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215 // RGuestVideoDriver::MapToHWAddress |
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216 // ----------------------------------------------------------------------------- |
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217 // |
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218 EXPORT_C TInt RGuestVideoDriver::MapToHWAddress( const TInt aChunkHandle, TUint32& aHWAddress ) |
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219 { |
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220 TPckgBuf<TInt> handle( aChunkHandle ); |
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221 TPckg<TUint32> address( aHWAddress ); |
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222 return DoControl( GuestVideoDriver::ERequestMapAddress, (TAny*)&handle, (TAny*)&address ); |
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223 } |
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224 |
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225 // ----------------------------------------------------------------------------- |
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226 // RGuestVideDriver::GetSurfaceBufferBaseAddress |
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227 // ----------------------------------------------------------------------------- |
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228 // |
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229 EXPORT_C TInt RGuestVideoDriver::GetSurfaceBufferBaseAddress( TUint32& aSurfaceBufferBaseAddress ) |
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230 { |
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231 TPckg<TUint32> address( aSurfaceBufferBaseAddress ); |
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232 return DoControl( GuestVideoDriver::ERequestSurfaceBufferBaseAddress, (TAny*)&address ); |
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233 } |
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234 |
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235 // ----------------------------------------------------------------------------- |
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236 // RGuestVideoDriver::EglGetSgHandles |
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237 // ----------------------------------------------------------------------------- |
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238 // |
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239 EXPORT_C TInt RGuestVideoDriver::EglGetSgHandles( const TUint64 aId, TUint64 *aSgHandles ) |
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240 { |
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241 TPckg<TUint64> sgId( aId ); |
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242 TPckg<TUint64> sgHandles( *aSgHandles ); |
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243 return DoControl( GuestVideoDriver::ERequestSgHandles, (TAny*)&sgId, (TAny*)&sgHandles ); |
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244 } |
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245 |
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246 // ----------------------------------------------------------------------------- |
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247 // RGuestVideoDriver::SendBuffer |
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248 // ----------------------------------------------------------------------------- |
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249 // |
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250 void RGuestVideoDriver::SendBuffer() |
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251 { |
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252 UTIL_TRACE("RGuestVideoDriver::SendBuffer length=%d", iBuffer.Length()); |
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253 DRVRPANIC_ASSERT_DEBUG(iThreadLock.IsHeld(), EDriverPanicSendBufferFnDoesNotHaveThreadLock); |
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254 TRequestStatus status; |
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255 |
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256 DoRequest(GuestVideoDriver::ERequestLoadCommands, status, (TAny*)&iBuffer); |
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257 |
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258 User::WaitForRequest( status ); |
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259 |
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260 iBuffer.Zero(); |
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261 UTIL_TRACE("RGuestVideoDriver::SendBuffer status=%d", status.Int()); |
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262 // Commands expecting a reply should never come through here, so status should always be KErrNone |
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263 DRVRPANIC_ASSERT(status.Int() == KErrNone, EDriverPanicSendBufferFailed); |
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264 } |