1 /* |
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2 * Copyright (c) 2009 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 the License "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 #include "svpsnapdriver.h" |
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19 #include "rsvpsnapdriver.h" |
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20 #include "system.h" |
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21 |
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22 static inline TUint32 ReadReg(ESVPSnapReg aReg) |
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23 { |
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24 DP("** (SVPSNAPDRIVER) ReadReg(%d)",aReg); |
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25 |
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26 return *(volatile TUint32 *)(KHwSVPSnapDevice + (aReg << 2)); |
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27 } |
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28 |
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29 static inline void WriteReg(ESVPSnapReg aReg, TUint32 aVal) |
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30 { |
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31 DP("** (SVPSNAPDRIVER) WriteReg(%d,%d)",aReg,aVal); |
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32 |
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33 *(volatile TUint32*)(KHwSVPSnapDevice + (aReg << 2)) = aVal; |
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34 } |
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35 |
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36 // |
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37 // DSVPSnapDriverFactory |
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38 // |
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39 |
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40 DSVPSnapDriverFactory::DSVPSnapDriverFactory() |
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41 { |
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42 DP("** (SVPSNAPDRIVER) DSVPSnapDriverFactory::DSVPSnapDriverFactory()"); |
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43 |
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44 iVersion = TVersion(KMajorVersionNumber,KMinorVersionNumber,KBuildVersionNumber); |
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45 } |
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46 |
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47 TInt DSVPSnapDriverFactory::Create(DLogicalChannelBase*& aChannel) |
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48 { |
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49 DP("** (SVPSNAPDRIVER) DSVPSnapDriverFactory::Create()"); |
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50 |
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51 #if 0 |
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52 if (iOpenChannels != 0) |
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53 return KErrInUse; // a channel is already open |
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54 #endif |
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55 |
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56 aChannel = new DSVPSnapChannel(this); |
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57 |
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58 return aChannel ? KErrNone : KErrNoMemory; |
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59 } |
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60 |
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61 TInt DSVPSnapDriverFactory::Install() |
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62 { |
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63 DP("** (SVPSNAPDRIVER) DSVPSnapDriverFactory::Install()"); |
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64 |
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65 return(SetName(&KSVPSnapDriverName)); |
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66 } |
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67 |
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68 void DSVPSnapDriverFactory::GetCaps(TDes8& aDes) const |
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69 { |
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70 DP("** (SVPSNAPDRIVER) DSVPSnapDriverFactory::GetCaps()"); |
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71 |
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72 TCapsSVPSnapDriver b; |
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73 b.iVersion = TVersion(KMajorVersionNumber, KMinorVersionNumber, KBuildVersionNumber); |
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74 aDes.FillZ(aDes.MaxLength()); |
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75 aDes.Copy((TUint8 *)&b, Min(aDes.MaxLength(), sizeof(b))); |
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76 } |
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77 |
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78 // |
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79 // DSVPSnapChannel |
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80 // |
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81 |
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82 DSVPSnapChannel::DSVPSnapChannel(DLogicalDevice* aLogicalDevice) |
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83 { |
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84 DP("** (SVPSNAPDRIVER) DSVPSnapChannel::DSVPSnapChannel()"); |
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85 |
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86 iDevice = aLogicalDevice; |
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87 |
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88 iClientThread = &Kern::CurrentThread(); |
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89 iClientThread->Open(); |
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90 } |
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91 |
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92 DSVPSnapChannel::~DSVPSnapChannel() |
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93 { |
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94 DP("** (SVPSNAPDRIVER) DSVPSnapChannel::~DSVPSnapChannel() ->"); |
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95 Kern::SafeClose((DObject*&)iClientThread, NULL); |
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96 DP("** (SVPSNAPDRIVER) DSVPSnapChannel::~DSVPSnapChannel() <-"); |
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97 } |
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98 |
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99 TInt DSVPSnapChannel::DoCreate(TInt /*aUnit*/, const TDesC* anInfo, const TVersion& aVer) |
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100 { |
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101 DP("** (SVPSNAPDRIVER) DSVPSnapChannel::DoCreate()"); |
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102 |
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103 if (!Kern::QueryVersionSupported(TVersion(KMajorVersionNumber, KMinorVersionNumber, KBuildVersionNumber), aVer)) |
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104 return KErrNotSupported; |
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105 |
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106 //Setup the driver for receiving client messages |
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107 SetDfcQ(Kern::DfcQue0()); |
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108 iMsgQ.Receive(); |
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109 |
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110 DP("** (SVPSNAPDRIVER) DSVPSnapChannel::DoCreate()- checking device"); |
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111 TUint id = ReadReg(ESnapshot_Id); |
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112 DP("** (SVPSNAPDRIVER) DSVPSnapChannel::DoCreate()- checked device- 0x%08x", id); |
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113 WriteReg(ESnapshot_Address, 0); |
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114 return KErrNone; |
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115 } |
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116 |
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117 void DSVPSnapChannel::DoCancel(TInt aReqNo) |
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118 { |
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119 DP("** (SVPSNAPDRIVER) DSVPSnapChannel::DoCancel() %x(%d)", aReqNo, aReqNo); |
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120 } |
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121 |
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122 TInt DSVPSnapChannel::DoRequest(TInt aReqNo, TRequestStatus* aStatus, TAny* a1, TAny* a2) |
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123 { |
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124 DP("** (SVPSNAPDRIVER) DSVPSnapChannel::DoRequest() %x(%d)", aReqNo, aReqNo); |
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125 |
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126 TInt err = KErrGeneral; |
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127 |
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128 switch(aReqNo) |
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129 { |
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130 case RSVPSnapDriver::ESaveVM: |
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131 DP("RSVPSnapDriver::ESaveVM"); |
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132 err = SaveVM((const TDesC8*)a1); |
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133 break; |
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134 case RSVPSnapDriver::ELoadVM: |
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135 DP("RSVPSnapDriver::ELoadVM"); |
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136 err= LoadVM((const TDesC8*)a1); |
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137 break; |
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138 default: |
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139 DP("default"); |
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140 err = KErrGeneral; |
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141 break; |
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142 } |
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143 |
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144 if (KErrNone != err) |
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145 DP("** (SVPSNAPDRIVER) Error %d from DoRequest", err); |
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146 |
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147 return err; |
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148 } |
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149 |
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150 TInt DSVPSnapChannel::DoControl(TInt aFunction, TAny* a1, TAny* a2) |
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151 { |
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152 DP("** (SVPSNAPDRIVER) DSVPSnapChannel::DoControl(%d)", aFunction); |
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153 |
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154 TInt err = KErrGeneral; |
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155 /* There should be a good reason to use a control rather than a request. */ |
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156 |
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157 if (KErrNone != err) { |
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158 DP("** (SVPSNAPDRIVER) Error %d from control function", err); |
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159 } |
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160 |
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161 return err; |
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162 } |
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163 |
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164 void DSVPSnapChannel::HandleMsg(TMessageBase* aMsg) |
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165 { |
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166 |
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167 TThreadMessage& m = *(TThreadMessage*)aMsg; |
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168 TInt id = m.iValue; |
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169 |
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170 DP("** (SVPSNAPDRIVER) DSVPSnapChannel::HandleMsg() %x(%d)", id, id); |
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171 |
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172 if (id == (TInt)ECloseMsg) |
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173 { |
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174 m.Complete(KErrNone, EFalse); |
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175 return; |
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176 } |
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177 if (id == KMaxTInt) |
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178 { |
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179 // DoCancel |
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180 DoCancel(m.Int0()); |
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181 m.Complete(KErrNone, ETrue); |
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182 return; |
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183 } |
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184 if (id < 0) |
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185 { |
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186 // DoRequest |
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187 TRequestStatus* pStatus = (TRequestStatus*)m.Ptr0(); |
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188 TInt r = DoRequest(~id, pStatus, m.Ptr1(), m.Ptr2()); |
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189 // if (r != KErrNone) |
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190 Kern::RequestComplete(iClientThread,pStatus,r); |
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191 m.Complete(KErrNone, ETrue); |
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192 } |
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193 else |
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194 { |
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195 // DoControl |
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196 TInt r = DoControl(id, m.Ptr0(), m.Ptr1()); |
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197 m.Complete(r, ETrue); |
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198 } |
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199 } |
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200 |
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201 TInt DSVPSnapChannel::SaveVM(const TDesC8* aData) |
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202 { |
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203 DP("** DSVPSnapChannel::SaveVM()"); |
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204 |
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205 TInt err = KErrNone; |
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206 RET_IF_ERROR(err, Kern::ThreadDesRead(iClientThread, aData, iSendDataBuffer,0)); |
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207 TUint32 * ptr = (TUint32*) iSendDataBuffer.Ptr(); |
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208 |
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209 WriteReg(ESnapshot_Address, Epoc::LinearToPhysical((TUint32)ptr)); |
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210 WriteReg(ESnapshot_Length, (TUint32) (iSendDataBuffer.Length())); |
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211 WriteReg(ESnapshot_Trigger, RSVPSnapDriver::ESaveVM); |
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212 |
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213 return err; |
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214 } |
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215 |
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216 TInt DSVPSnapChannel::LoadVM(const TDesC8* aData) |
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217 { |
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218 DP("** DSVPSnapChannel::LoadVM()"); |
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219 |
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220 TInt err = KErrNone; |
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221 RET_IF_ERROR(err, Kern::ThreadDesRead(iClientThread, aData, iSendDataBuffer,0)); |
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222 |
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223 TUint32 * ptr = (TUint32*) iSendDataBuffer.Ptr(); |
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224 WriteReg(ESnapshot_Address, Epoc::LinearToPhysical((TUint32)ptr)); |
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225 |
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226 return ReadReg(ESnapshot_Address); |
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227 } |
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228 |
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229 DECLARE_EXTENSION_LDD() |
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230 { |
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231 // FIXME: Not needed? |
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232 DP("** (SVPSNAPDRIVER) DSVPSnapDriverFactory created"); |
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233 return new DSVPSnapDriverFactory; |
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234 } |
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235 |
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236 DECLARE_STANDARD_EXTENSION() |
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237 { |
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238 DP("** (SVPSNAPDRIVER) SVPSnap extension entry point"); |
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239 TInt r; |
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240 DSVPSnapDriverFactory* device = new DSVPSnapDriverFactory; |
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241 if (device==NULL) |
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242 r=KErrNoMemory; |
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243 else |
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244 r=Kern::InstallLogicalDevice(device); |
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245 |
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246 return r; |
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247 } |
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