1 /* |
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2 * Copyright (c) 2005 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: An example implementation for ISC Driver Reference |
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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 // INCLUDE FILES |
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21 #include <IscDefinitions.h> |
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22 #include <IscMultiplexerBase.h> |
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23 #include "IscMainRcvBuffer.h" |
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24 #include "IscQueue.h" |
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25 #include "IscDevice.h" |
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26 #include "IscChannel.h" |
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27 #include "IscChannelContainer.h" |
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28 #include "IscTrace.h" |
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29 |
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30 |
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31 // EXTERNAL DATA STRUCTURES |
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32 |
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33 // EXTERNAL FUNCTION PROTOTYPES |
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34 |
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35 // CONSTANTS |
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36 DIscMainRcvBuffer* DIscMainRcvBuffer::iThisPointer = NULL; |
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37 const TInt KBufferCleanUpDfcPriority( 4 ); |
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38 |
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39 // MACROS |
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40 |
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41 // LOCAL CONSTANTS AND MACROS |
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42 |
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43 // MODULE DATA STRUCTURES |
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44 |
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45 // LOCAL FUNCTION PROTOTYPES |
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46 |
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47 // FORWARD DECLARATIONS |
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48 |
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49 |
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50 // ============================ MEMBER FUNCTIONS =============================== |
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51 |
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52 // ----------------------------------------------------------------------------- |
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53 // DIscMainRcvBuffer::DIscMainRcvBuffer |
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54 // C++ default constructor |
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55 // ( other items were commented in a header ). |
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56 // ----------------------------------------------------------------------------- |
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57 // |
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58 DIscMainRcvBuffer::DIscMainRcvBuffer( DIscDevice *aDevice, TUint16 aIscMainRcvBufferQueueSize ) |
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59 :iDevice ( aDevice ), |
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60 iDfc( NULL ), |
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61 iMainRcvBufferQueue( NULL ) |
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62 { |
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63 iIscMainRcvBufferQueueSize = aIscMainRcvBufferQueueSize; |
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64 iMainRcvBuffer = new TUint32*[iIscMainRcvBufferQueueSize]; |
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65 ASSERT_RESET_ALWAYS( iMainRcvBuffer, "IscDriver",EIscMemoryAllocationFailure ); |
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66 |
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67 for ( TInt i = 0; i < iIscMainRcvBufferQueueSize; i++ ) |
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68 { |
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69 iMainRcvBuffer[i] = NULL; |
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70 } |
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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 // DIscMainRcvBuffer::DoCreate |
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76 // Second-phase constructor to complete construction. |
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77 // ( other items were commented in a header ). |
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78 // ----------------------------------------------------------------------------- |
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79 // |
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80 void DIscMainRcvBuffer::DoCreate() |
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81 { |
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82 if ( iThisPointer ) //Only one instance of this class is allowed |
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83 { |
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84 ASSERT_RESET_ALWAYS( 0,"IscDriver",EIscMainRcvBufferInitialize ); |
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85 } |
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86 |
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87 iDfc = new TDfc( BufferCleanUp, this, Kern::DfcQue0(), KBufferCleanUpDfcPriority ); |
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88 ASSERT_RESET_ALWAYS( iDfc, "IscDriver",EIscMemoryAllocationFailure ); |
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89 |
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90 iMainRcvBufferQueue = new DIscQueue( iMainRcvBuffer, iIscMainRcvBufferQueueSize ); |
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91 ASSERT_RESET_ALWAYS( iMainRcvBufferQueue, "IscDriver",EIscMemoryAllocationFailure ); |
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92 |
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93 //Store pointer of this instance that can be used from static functions |
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94 iThisPointer = this; |
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95 } |
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96 |
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97 //Destructor |
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98 DIscMainRcvBuffer::~DIscMainRcvBuffer() |
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99 { |
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100 delete iDfc; |
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101 delete iMainRcvBufferQueue; |
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102 iDfc = NULL; |
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103 iMainRcvBufferQueue = NULL; |
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104 iThisPointer = NULL; |
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105 iDevice = NULL; |
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106 } |
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107 |
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108 // ----------------------------------------------------------------------------- |
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109 // DIscMainRcvBuffer::MsgReceive |
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110 // Function that should be called to store incoming frame |
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111 // ( other items were commented in a header ). |
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112 // ----------------------------------------------------------------------------- |
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113 // |
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114 void DIscMainRcvBuffer::MsgReceive( TDesC8* aData ) |
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115 { |
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116 E_TRACE( ( _T( "IMRB:MR(0x%x)" ), aData ) ); |
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117 //Check that instance of this class is created |
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118 if ( !iThisPointer ) |
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119 { |
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120 // MainRcvBuffer not initialized -> panic |
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121 ASSERT_RESET_ALWAYS( 0,"IscDriver",EIscMainRcvBufferInitialize ); |
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122 } |
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123 |
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124 TInt r = iThisPointer->iMainRcvBufferQueue->Add( aData ); |
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125 ASSERT_RESET_ALWAYS( r == KErrNone, "IscDriver",EIscMainRcvBufferOverflow ); |
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126 iThisPointer->AddDfc(); |
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127 } |
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128 |
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129 // ----------------------------------------------------------------------------- |
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130 // DIscMainRcvBuffer::AddDfc |
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131 // Function for adding Dfc |
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132 // ( other items were commented in a header ). |
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133 // ----------------------------------------------------------------------------- |
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134 // |
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135 void DIscMainRcvBuffer::AddDfc() |
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136 { |
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137 #ifndef __WINS__ |
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138 if ( NKern::CurrentContext() == NKern::EInterrupt ) |
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139 { |
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140 iDfc->Add(); |
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141 } |
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142 else |
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143 { |
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144 iDfc->Enque(); |
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145 } |
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146 #else |
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147 // Have to do DoEnque since Enque() & Add() cannot be called from pure |
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148 // win32 thread context. And this call might come directly in win32 thread |
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149 // since the implementation of ISC Data Transmission API can do virtually |
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150 // anything in WINS |
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151 iDfc->DoEnque(); |
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152 #endif |
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153 } |
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154 |
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155 // ----------------------------------------------------------------------------- |
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156 // DIscMainRcvBuffer::BufferCleanUp |
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157 // Function to empty messages in main buffer |
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158 // ( other items were commented in a header ). |
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159 // ----------------------------------------------------------------------------- |
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160 // |
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161 void DIscMainRcvBuffer::BufferCleanUp( TAny* aPtr ) |
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162 { |
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163 C_TRACE( ( _T( "DIscMainRcvBuffer::BufferCleanUp(0x%x)" ), aPtr ) ); |
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164 |
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165 DIscMainRcvBuffer* Buffer = ( DIscMainRcvBuffer* )aPtr; |
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166 |
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167 |
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168 TUint16 rcvChannelId( KIscFrameReceiverNotFound ); |
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169 TAny* channelPtr = NULL; |
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170 DIscChannel* tempPtr = NULL; |
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171 TBool channelFound( EFalse ); |
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172 |
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173 TDesC8* ptr = NULL; |
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174 ptr = ( TDesC8* )Buffer->iMainRcvBufferQueue->RemoveFirst(); |
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175 |
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176 while ( ptr ) |
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177 { |
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178 Buffer->iDevice->iIscMultiplexerInterface->GetRcvChannelId( *ptr, rcvChannelId, channelPtr ); |
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179 |
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180 C_TRACE( ( _T( "DIscMainRcvBuffer::BufferCleanUp channelId (0x%x) channelPtr (0x%x)" ), rcvChannelId, channelPtr ) ); |
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181 if ( rcvChannelId >= KIscFirstChannel && rcvChannelId < KIscNumberOfUnits && channelPtr ) |
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182 { |
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183 channelFound = EFalse; |
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184 for ( TUint16 i( 0 ); ( i < KIscMaxNumberOfChannelSharers ) && ( !channelFound ); i++ ) |
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185 { |
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186 tempPtr = IscChannelContainer::Channel( rcvChannelId, i ); |
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187 if ( tempPtr == channelPtr ) |
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188 { |
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189 // correct channel found |
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190 ( ( DIscChannel* )channelPtr )->StoreFrame( ptr ); |
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191 channelFound = ETrue; |
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192 } |
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193 tempPtr = NULL; |
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194 } |
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195 if ( !channelFound ) |
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196 { |
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197 TRACE_ASSERT_ALWAYS; |
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198 // correct channel was not found -> release frame |
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199 Buffer->iDevice->ReleaseMemoryBlock( ( TDes8* ) ptr ); |
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200 } |
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201 } |
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202 else if ( rcvChannelId == KIscFrameReceiverNotFound ) |
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203 { |
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204 C_TRACE( ( _T( "DIscMainRcvBuffer::BufferCleanUp Frame Receiver not found!" ) ) ); |
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205 Buffer->iDevice->ReleaseMemoryBlock( ( TDes8* ) ptr ); |
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206 } |
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207 // Frame going to control channel |
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208 else if ( rcvChannelId == 0x00 ) |
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209 { |
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210 Buffer->iDevice->iIscMultiplexerInterface->HandleControlFrame( *ptr ); |
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211 } |
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212 else |
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213 { |
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214 TRACE_ASSERT_ALWAYS; |
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215 Buffer->iDevice->ReleaseMemoryBlock( ( TDes8* ) ptr ); |
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216 } |
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217 |
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218 // get the next frame from the queue |
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219 ptr = ( TDes8* )Buffer->iMainRcvBufferQueue->RemoveFirst(); |
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220 } |
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221 |
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222 IscChannelContainer::ChannelComplition( NULL ); |
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223 |
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224 C_TRACE( ( _T( "DIscMainRcvBuffer::BufferCleanUp - return 0x%x" ) ) ); |
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225 |
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226 } |
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227 |
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228 // ========================== OTHER EXPORTED FUNCTIONS ========================= |
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229 |
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230 // End of File |
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