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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 the License "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 // e32\drivers\pbus\mmc\mmccd_init.cpp |
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15 // |
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16 // |
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17 |
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18 #include <drivers/mmccd_ifc.h> |
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19 #include <drivers/pbusmedia.h> |
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20 |
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21 |
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22 |
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23 |
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24 /** |
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25 Starts the sequence of operations that creates the platform specific objects, |
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26 registers the socket, and initialises the stack. |
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27 |
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28 The function is called in the Variant DLL's entry point code, i.e. when |
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29 the kernel extension is initialised. |
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30 |
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31 Note that the Variant DLL is a kernel extension. |
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32 |
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33 @return KErrNone if creation and initialisation is successful; |
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34 one of the other system wide error codes otherwise. |
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35 |
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36 @see TMMCardControllerInterface::NewStack() |
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37 @see TMMCardControllerInterface::NewMediaChange() |
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38 @see TMMCardControllerInterface::NewVcc() |
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39 @see TMMCardControllerInterface::Init() |
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40 @see TMMCardControllerInterface::IsMMCStack() |
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41 @see TMMCardControllerInterface::MediaChangeID() |
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42 @see TMMCardControllerInterface::VccID() |
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43 */ |
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44 EXPORT_C TInt TMMCardControllerInterface::Create() |
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45 // |
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46 // Allocate any resources. Only done once on kernel initialization so don't |
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47 // worry about cleanup if it fails. |
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48 // |
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49 { |
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50 TInt r=KErrNone; |
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51 __KTRACE_OPT(KPBUS1,Kern::Printf(">TMMCardControllerInterface::Create")); |
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52 |
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53 // Create the password store (a single password store |
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54 // is allocated for the use of all MMC stacks |
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55 |
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56 TMMCPasswordStore* theMmcPasswordStore = (TMMCPasswordStore*)LocDrv::PasswordStore(); |
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57 if(theMmcPasswordStore == NULL) |
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58 { |
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59 theMmcPasswordStore = new TMMCPasswordStore(); |
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60 if(theMmcPasswordStore) |
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61 { |
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62 if((r = theMmcPasswordStore->Init()) == KErrNone) |
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63 r = LocDrv::RegisterPasswordStore(theMmcPasswordStore); |
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64 |
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65 if(r != KErrNone) |
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66 delete theMmcPasswordStore; |
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67 } |
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68 else |
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69 { |
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70 r = KErrNoMemory; |
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71 } |
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72 } |
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73 |
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74 if(r!= KErrNone) |
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75 return r; |
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76 |
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77 r = Init(); |
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78 if (r != KErrNone) |
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79 return r; |
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80 |
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81 |
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82 SMediaDeviceInfo mdi; |
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83 TInt i; |
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84 for (i=0; i<KMaxPBusSockets && r==KErrNone; i++) |
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85 { |
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86 if (IsMMCSocket(i,mdi)) |
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87 { |
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88 __KTRACE_OPT(KPBUS1,Kern::Printf("Socket %d is MMC card",i)); |
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89 |
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90 // Allocate a new socket |
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91 DMMCSocket* pS = NewSocket(i, theMmcPasswordStore); |
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92 if (!pS) |
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93 { |
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94 r=KErrNoMemory; |
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95 break; |
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96 } |
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97 TheSockets[i]=pS; |
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98 |
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99 // Allocate a variant specific stack object via the interface |
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100 DMMCStack* pStack=NewStack(i, pS); |
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101 if (!pStack) |
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102 { |
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103 r=KErrNoMemory; |
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104 break; |
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105 } |
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106 |
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107 pS->iStack=pStack; |
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108 |
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109 TInt mcid=MediaChangeID(i); |
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110 __KTRACE_OPT(KPBUS1,Kern::Printf("Socket %d Media Change %d",i,mcid)); |
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111 DMMCMediaChange* pM=(DMMCMediaChange*)TheMediaChanges[mcid]; |
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112 if (!pM) |
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113 { |
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114 __KTRACE_OPT(KPBUS1,Kern::Printf("New Media Change")); |
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115 pM=NewMediaChange(mcid); |
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116 if (!pM) |
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117 { |
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118 r=KErrNoMemory; |
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119 break; |
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120 } |
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121 TheMediaChanges[mcid]=pM; |
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122 __KTRACE_OPT(KPBUS1,Kern::Printf("Media Change %d at %08x",mcid,pM)); |
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123 r=pM->Create(); |
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124 if (r!=KErrNone) |
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125 break; |
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126 } |
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127 else |
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128 { |
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129 __KTRACE_OPT(KPBUS1,Kern::Printf("Media Change %d already exists at %08x",mcid,pM)); |
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130 ++pM->iReplyCount; |
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131 } |
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132 TInt vcc=VccID(i); |
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133 __KTRACE_OPT(KPBUS1,Kern::Printf("Socket %d Vcc %d",i,vcc)); |
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134 DMMCPsu* pV=(DMMCPsu*)TheVccs[vcc]; |
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135 if (!pV) |
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136 { |
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137 __KTRACE_OPT(KPBUS1,Kern::Printf("New Vcc")); |
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138 pV=NewVcc(vcc,mcid); |
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139 if (!pV) |
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140 { |
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141 r=KErrNoMemory; |
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142 break; |
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143 } |
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144 TheVccs[vcc]=pV; |
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145 |
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146 // Assign Socket here such that iDFc can be obtained |
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147 pV->iSocket=pS; |
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148 |
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149 __KTRACE_OPT(KPBUS1,Kern::Printf("Vcc %d at %08x",vcc,pV)); |
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150 r=pV->Create(); |
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151 if (r!=KErrNone) |
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152 break; |
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153 } |
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154 else |
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155 { |
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156 __KTRACE_OPT(KPBUS1,Kern::Printf("Vcc %d already exists at %08x, mcid=%d",vcc,pV,pV->iMediaChangeNum)); |
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157 // DISALLOW SHARED PSUs UNTIL SOMEONE NEEDS THEM |
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158 // if (pV->iMediaChangeNum!=mcid) |
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159 // { |
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160 r=KErrInUse; |
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161 // break; |
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162 // } |
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163 } |
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164 |
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165 DMMCPsu* pVCore=(DMMCPsu*)TheVccCores[vcc]; |
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166 // N.B. Assume paired vcc & vccQ unit are numbered identically! |
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167 pVCore=NewVccCore(vcc,mcid); |
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168 if (pVCore) |
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169 { |
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170 TheVccCores[vcc]=pVCore; |
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171 __KTRACE_OPT(KPBUS1,Kern::Printf("VccCore %d at %08x",vcc,pVCore)); |
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172 |
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173 // Assign Socket here such that iDFcQ can be obtained |
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174 pVCore->iSocket=pS; |
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175 |
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176 r=pVCore->Create(); |
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177 if (r!=KErrNone) |
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178 break; |
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179 |
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180 // VccCore must issue sleep instead of power down |
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181 pVCore->iPwrDownCheckFn = DMMCPsu::SleepCheck; |
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182 } |
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183 //else do nothing doesn't matter if its not supported |
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184 |
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185 r=pS->Create(mdi.iDeviceName); |
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186 if (r!=KErrNone) |
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187 break; |
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188 |
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189 pS->iMediaChangeNumber=mcid; |
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190 pS->iMediaChange=pM; |
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191 pS->iVcc=pV; |
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192 if (pVCore) |
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193 { |
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194 pS->iVccCore = pVCore; |
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195 } |
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196 |
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197 r=pS->Init(); |
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198 if (r!=KErrNone) |
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199 break; |
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200 |
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201 r = RegisterMediaDevices(i); |
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202 if(r != KErrNone) |
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203 break; |
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204 |
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205 __KTRACE_OPT(KPBUS1,Kern::Printf("Socket %d Created OK",i)); |
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206 } |
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207 else |
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208 __KTRACE_OPT(KPBUS1,Kern::Printf("Socket %d not MMC card",i)); |
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209 } |
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210 |
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211 __KTRACE_OPT(KPBUS1,Kern::Printf("<TMMCardControllerInterface::Create, ret %d",r)); |
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212 return r; |
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213 } |
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214 |
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215 EXPORT_C TInt TMMCardControllerInterface::RegisterMediaDevices(TInt aSocket) |
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216 /** |
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217 Registers the media devices for the specified socket. |
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218 By default, All MMC derivatives register at least an MMC driver |
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219 @internal |
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220 */ |
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221 { |
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222 TInt err = KErrNone; |
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223 |
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224 SMediaDeviceInfo mdi; |
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225 |
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226 if (IsMMCSocket(aSocket, mdi) == EFalse) |
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227 return(KErrNotSupported); |
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228 |
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229 DMMCSocket* pS = (DMMCSocket*) TheSockets[aSocket]; |
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230 if(pS == NULL) |
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231 return(KErrNoMemory); |
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232 |
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233 TMMCMachineInfo mi; |
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234 pS->iStack->MachineInfo(mi); |
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235 |
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236 // There may be more than one physical card slot for this socket/stack; |
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237 // if this is the case, then we have to create a separate DPBusPrimaryMedia |
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238 // for each one. This is the only way to get the local media sub-system to iterate |
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239 // through the installed set of media drivers repeatedly for each card slot |
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240 // (rather than once for the entire stack). We also need to share the number of |
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241 // drives/partitions (SMediaDeviceInfo.iDriveCount) and the number of media |
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242 // (SMediaDeviceInfo.iNumMedia) equally between the slots... |
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243 __ASSERT_ALWAYS(mdi.iDriveCount >= mi.iTotalSockets, DMMCSocket::Panic(DMMCSocket::EMMCInvalidNumberOfCardSlots) ); |
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244 __ASSERT_ALWAYS(mdi.iNumMedia >= mi.iTotalSockets, DMMCSocket::Panic(DMMCSocket::EMMCInvalidNumberOfCardSlots) ); |
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245 |
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246 TInt physicalCardSlots = mi.iTotalSockets; |
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247 TInt drivesPerSlot = mdi.iDriveCount / physicalCardSlots; |
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248 TInt numMediaPerSlot = mdi.iNumMedia / physicalCardSlots; |
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249 TInt driveListIndex = 0; |
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250 |
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251 #if !defined(__WINS__) |
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252 DMMCStack::TDemandPagingInfo demandPagingInfo; |
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253 demandPagingInfo.iPagingDriveList = NULL; |
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254 demandPagingInfo.iDriveCount = 0; |
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255 TBool demandPagingSupported = |
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256 pS->iStack->DemandPagingInfo(demandPagingInfo) == KErrNone ? (TBool)ETrue : (TBool)EFalse; |
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257 |
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258 #endif // __WINS__ |
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259 |
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260 |
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261 for (TInt i=0; i<physicalCardSlots ; i++) |
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262 { |
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263 DPBusPrimaryMedia* pMedia = new DPBusPrimaryMedia(pS); |
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264 if (pMedia == NULL) |
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265 return(KErrNoMemory); |
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266 // store the slot number in DPBusPrimaryMedia so that it can |
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267 // subsequently be passed to the media driver. |
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268 pMedia->iSlotNumber = i; |
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269 |
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270 err = LocDrv::RegisterMediaDevice( |
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271 mdi.iDevice, |
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272 drivesPerSlot, |
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273 mdi.iDriveList+driveListIndex, |
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274 pMedia, |
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275 numMediaPerSlot, |
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276 *mdi.iDeviceName); |
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277 if (err != KErrNone) |
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278 break; |
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279 |
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280 #if !defined(__WINS__) |
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281 if (demandPagingSupported && demandPagingInfo.iSlotNumber == i) |
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282 { |
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283 err = LocDrv::RegisterPagingDevice( |
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284 pMedia, |
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285 demandPagingInfo.iPagingDriveList, |
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286 demandPagingInfo.iDriveCount, |
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287 demandPagingInfo.iPagingType, |
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288 demandPagingInfo.iReadShift, |
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289 demandPagingInfo.iNumPages); |
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290 |
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291 // Ignore error if demand paging not supported by kernel |
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292 if (err == KErrNotSupported) |
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293 err = KErrNone; |
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294 |
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295 if (err != KErrNone) |
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296 break; |
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297 } |
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298 |
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299 if (mi.iFlags & TMMCMachineInfo::ESupportsDMA) |
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300 { |
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301 err = LocDrv::RegisterDmaDevice(pMedia, |
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302 KMMCardHighCapBlockSize, |
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303 pS->MaxDataTransferLength(), |
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304 pS->DmaAlignment()); |
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305 if (err != KErrNone) |
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306 break; |
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307 } |
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308 #endif // __WINS__ |
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309 |
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310 driveListIndex+= drivesPerSlot; |
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311 } |
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312 |
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313 return(err); |
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314 } |