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: Implementation of DIscBufferAllocator class |
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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 <kernel.h> |
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22 #include <platform.h> |
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23 #include <kern_priv.h> |
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24 |
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25 #include "IscBufferAllocator.h" |
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26 #include "IscBufferQueue.h" |
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27 #include "IscTrace.h" |
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28 |
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29 // EXTERNAL DATA STRUCTURES |
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30 |
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31 // EXTERNAL FUNCTION PROTOTYPES |
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32 |
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33 // CONSTANTS |
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34 |
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35 // MACROS |
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36 |
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37 // LOCAL CONSTANTS AND MACROS |
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38 |
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39 // MODULE DATA STRUCTURES |
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40 |
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41 // LOCAL FUNCTION PROTOTYPES |
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42 |
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43 // FORWARD DECLARATIONS |
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44 |
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45 // ============================ MEMBER FUNCTIONS =============================== |
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46 |
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47 // ----------------------------------------------------------------------------- |
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48 // DIscBufferAllocator::DIscBufferAllocator |
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49 // C++ default constructor can NOT contain any code, that |
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50 // might leave. |
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51 // ----------------------------------------------------------------------------- |
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52 // |
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53 DIscBufferAllocator::DIscBufferAllocator( TIscBufferEntry* aBufferConfig ) |
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54 : iBuffers( NULL ) |
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55 #ifndef __WINS__ |
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56 , iBufferChunk( NULL ) |
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57 , iCurrentAddress( NULL ) |
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58 #endif |
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59 { |
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60 for ( TUint16 i = 0; i < KIscBufferAmount; i++ ) |
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61 { |
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62 iBufferConfig[i].size = aBufferConfig[i].size; |
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63 iBufferConfig[i].count = aBufferConfig[i].count; |
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64 } |
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65 |
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66 C_TRACE( ( _T( "DIscBufferAllocator::DIscBufferAllocator" ) ) ); |
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67 } |
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68 |
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69 // Destructor |
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70 DIscBufferAllocator::~DIscBufferAllocator() |
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71 { |
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72 // delete iBuffers & chunk |
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73 for ( TUint8 i = 0; i < KIscBufferAmount; i++ ) |
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74 { |
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75 delete iBuffers[i]; |
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76 iBuffers[i] = NULL; |
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77 } |
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78 delete [] iBuffers; |
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79 iBuffers=NULL; |
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80 |
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81 #ifndef __WINS__ |
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82 delete iBufferChunk; |
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83 iBufferChunk = NULL; |
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84 // free ram pages.. |
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85 #endif |
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86 } |
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87 |
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88 // ----------------------------------------------------------------------------- |
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89 // DIscBufferAllocator::AllocBuffers |
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90 // Allocate buffers according the multiplexer |
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91 // ( other items were commented in a header ). |
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92 // ----------------------------------------------------------------------------- |
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93 // |
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94 TInt DIscBufferAllocator::AllocBuffers() |
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95 { |
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96 C_TRACE( ( _T( "DIscBufferAllocator::AllocBuffers()" ) ) ); |
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97 TUint8 i = 0; |
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98 #ifndef __WINS__ |
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99 TInt memoryNeeded = 0; |
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100 for ( i = 0; i < KIscBufferAmount; i++ ) |
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101 { |
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102 if ( iBufferConfig[i].size > 0 && iBufferConfig[i].count> 0 ) |
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103 { |
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104 memoryNeeded += ( iBufferConfig[i].size * iBufferConfig[i].count ); |
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105 } |
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106 } |
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107 C_TRACE( ( _T( "DIscBufferAllocator::AllocBuffers memory needed %d" ), memoryNeeded ) ); |
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108 |
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109 // Check if buffers are allocated from ISC |
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110 if ( memoryNeeded > 0 ) |
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111 { |
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112 AllocPhMemory( memoryNeeded ); |
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113 } |
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114 else |
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115 { |
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116 return KErrNone; |
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117 } |
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118 |
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119 TUint8* address = ( TUint8* )iCurrentAddress; |
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120 #else |
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121 TUint8* address = NULL; |
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122 #endif //WINS |
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123 |
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124 |
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125 |
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126 iBuffers = new DIscBufferQueue*[ KIscBufferAmount ]; |
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127 ASSERT_RESET_ALWAYS( iBuffers, "ISCDataTransmissionBase",EIscMemoryAllocationFailure ); |
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128 |
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129 for ( i = 0; i < KIscBufferAmount; i++ ) |
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130 { |
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131 if ( iBufferConfig[i].size > 0 && iBufferConfig[i].count > 0 ) |
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132 { |
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133 iBuffers[i] = DIscBufferQueue::New( iBufferConfig[i].size, iBufferConfig[i].count, address ); |
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134 } |
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135 } |
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136 |
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137 return KErrNone; |
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138 |
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139 } |
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140 |
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141 #ifndef __WINS__ |
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142 // ----------------------------------------------------------------------------- |
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143 // DIscBufferAllocator::AllocPhMemory |
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144 // Physical buffer allocations |
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145 // ( other items were commented in a header ). |
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146 // ----------------------------------------------------------------------------- |
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147 // |
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148 void DIscBufferAllocator::AllocPhMemory( TInt aMemoryNeeded ) |
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149 { |
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150 C_TRACE( ( _T( "DIscBufferAllocator::AllocPhMemory(0x%x)" ), aMemoryNeeded ) ); |
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151 |
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152 TPhysAddr physAddr = 0; |
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153 NKern::ThreadEnterCS(); |
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154 TInt r = Epoc::AllocPhysicalRam( aMemoryNeeded, physAddr ); |
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155 ASSERT_RESET_ALWAYS( r == KErrNone, "IscDataTransmissionBase",EIscMemoryAllocationFailure ); |
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156 r = DPlatChunkHw::New( iBufferChunk, physAddr, aMemoryNeeded, EMapAttrSupRw ); |
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157 NKern::ThreadLeaveCS(); |
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158 ASSERT_RESET_ALWAYS( r == KErrNone, "IscDataTransmissionBase",EIscMemoryAllocationFailure ); |
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159 iCurrentAddress = iBufferChunk->LinearAddress(); |
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160 |
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161 } |
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162 #endif //WINS |
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163 |
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164 // ----------------------------------------------------------------------------- |
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165 // DIscBufferAllocator::ReserveMemoryBlock |
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166 // Reserves pre-allocated memory block |
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167 // ( other items were commented in a header ). |
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168 // ----------------------------------------------------------------------------- |
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169 // |
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170 void DIscBufferAllocator::ReserveMemoryBlock( |
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171 TDes8*& aPtr, |
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172 TUint16 aSize ) |
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173 { |
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174 E_TRACE( ( _T( "IBA:Res (0x%x)" ), aSize ) ); |
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175 |
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176 if ( iBuffers ) |
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177 { |
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178 for ( TUint8 i = 0; i < KIscBufferAmount;i++ ) |
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179 { |
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180 if ( aSize <= iBufferConfig[i].size && iBufferConfig[i].count > 0 ) |
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181 { |
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182 if ( iBuffers[i] ) |
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183 { |
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184 if ( !iBuffers[i]->Empty() ) |
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185 { |
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186 aPtr = ( TPtr8* )iBuffers[i]->Reserve(); |
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187 if ( aPtr ) |
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188 { |
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189 aPtr->SetLength( 0 ); |
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190 E_TRACE( ( _T( "IBA:Res 0x%x %d" ), aPtr, i ) ); |
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191 return; |
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192 } |
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193 } |
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194 } |
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195 } |
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196 } |
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197 } |
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198 // If Memory block is not reserved, set NULL to aPtr |
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199 aPtr = NULL; |
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200 return; |
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201 } |
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202 |
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203 // ----------------------------------------------------------------------------- |
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204 // DIscBufferAllocator::ReleaseMemoryBlock |
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205 // Releases memory block allocated with ReserveMemoryBlock |
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206 // ( other items were commented in a header ). |
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207 // ----------------------------------------------------------------------------- |
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208 // |
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209 void DIscBufferAllocator::ReleaseMemoryBlock( |
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210 TDes8* aPtr ) |
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211 { |
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212 E_TRACE( ( _T( "IBA:Rel 0x%x" ), aPtr ) ); |
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213 if ( !aPtr ) |
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214 { |
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215 TRACE_ASSERT_ALWAYS; |
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216 } |
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217 else if ( KIscBufferAmount != 0 && iBuffers ) |
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218 { |
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219 for ( TUint8 i = 0; i < KIscBufferAmount; i++ ) |
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220 { |
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221 if ( iBufferConfig[i].size == ( ( TDes8* )aPtr )->MaxLength() ) |
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222 { |
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223 iBuffers[i]->Release( aPtr ); |
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224 } |
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225 } |
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226 } |
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227 } |
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228 |
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229 // End of File |
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