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1 // Copyright (c) 2008-2009 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 // |
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15 |
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16 /** |
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17 @file |
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18 @internalTechnology |
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19 */ |
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20 |
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21 #include <e32base.h> |
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22 #include "debug.h" |
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23 #include "msdebug.h" |
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24 #include "msctypes.h" |
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25 #include "mscutils.h" |
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26 |
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27 #include "mtransport.h" |
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28 #include "mprotocol.h" |
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29 #include "tscsiclientreq.h" |
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30 #include "tscsiblockcmds.h" |
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31 |
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32 |
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33 // **** MODE SENSE (6) **** |
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34 void TScsiClientModeSense6Resp::DecodeL(const TDesC8& aPtr) |
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35 { |
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36 __MSFNSLOG |
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37 __SCSIPRINT(_L("--> SCSI MODE SENSE (6)")); |
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38 __SCSIPRINT1(_L("len=%d"), aPtr.Length()); |
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39 // Mode Parameter List |
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40 // SPC-3 7.4.2 |
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41 // - Mode Parameter Header |
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42 // - Block Descriptor(s) |
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43 // - Mode Page(s) |
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44 |
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45 // Mode Parameter Header |
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46 // SPC-3 7.4.3 |
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47 // [0] Mode Data Length |
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48 // [1] Medium Type |
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49 // [2] Device-Specific Paramater |
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50 // [3] Block Descriptor Length |
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51 |
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52 |
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53 // validate length |
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54 if (aPtr.Length() < KResponseLength) |
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55 { |
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56 User::Leave(KErrGeneral); |
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57 } |
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58 |
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59 TInt modeDataLength = aPtr[0]; |
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60 if (aPtr.Length() - 1 < modeDataLength) |
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61 { |
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62 User::Leave(KErrGeneral); |
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63 } |
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64 |
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65 TInt mediumType = aPtr[1]; |
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66 TUint8 deviceSpecificParameter = aPtr[2]; |
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67 // TInt blockDescriptorLength = aPtr[3]; |
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68 |
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69 __SCSIPRINT2(_L("Medium Type=%d DSP=0x%x"), mediumType, deviceSpecificParameter); |
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70 // [1] Medium Type |
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71 // 0x00 for SBC |
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72 if (mediumType == 0) |
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73 { |
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74 // [2] Device specific parameter |
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75 // SBC-3 6.3.1 |
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76 // get the WP bit from the Device Specific parameters |
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77 iWriteProtected = (deviceSpecificParameter & 0x80) ? ETrue : EFalse; |
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78 } |
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79 else |
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80 { |
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81 // unsupported medium type |
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82 iWriteProtected = EFalse; |
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83 } |
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84 |
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85 // [3] Block Descriptor Length |
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86 // 0x00 for no descriptors |
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87 |
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88 // No Block Descriptors |
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89 |
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90 // No Mode Pages |
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91 |
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92 } |
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93 |
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94 |
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95 // **** MODE SENSE (10) **** |
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96 void TScsiClientModeSense10Resp::DecodeL(const TDesC8& aPtr) |
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97 { |
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98 __MSFNSLOG |
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99 __SCSIPRINT(_L("--> SCSI MODE SENSE (10)")); |
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100 __SCSIPRINT1(_L("len=%d"), aPtr.Length()); |
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101 // Mode Parameter List |
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102 // SPC-3 7.4.2 |
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103 // - Mode Parameter Header |
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104 // - Block Descriptor(s) |
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105 // - Mode Page(s) |
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106 |
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107 // Mode Parameter Header |
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108 // SPC-3 7.4.3 |
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109 // [0] Mode Data Length |
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110 // [1] Mode Data Length |
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111 // [2] Medium Type |
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112 // [3] Device-Specific Paramater |
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113 // [4] Reserved |
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114 // [5] Reserved |
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115 // [6] Block Descriptor Length |
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116 // [7] Block Descriptor Length |
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117 |
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118 // validate length |
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119 if (aPtr.Length() < KResponseLength) |
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120 { |
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121 User::Leave(KErrGeneral); |
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122 } |
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123 |
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124 TInt modeDataLength = BigEndian::Get32(&aPtr[0]); |
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125 if (aPtr.Length() - 2 < modeDataLength) |
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126 { |
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127 User::Leave(KErrGeneral); |
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128 } |
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129 |
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130 TInt mediumType = aPtr[2]; |
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131 TUint8 deviceSpecificParameter = aPtr[3]; |
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132 // TInt blockDescriptorLength = BigEndian::Get32(&aPtr[6]);; |
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133 |
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134 __SCSIPRINT2(_L("Medium Type=%d DSP=0x%x"), mediumType, deviceSpecificParameter); |
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135 // [1] Medium Type |
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136 // 0x00 for SBC |
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137 if (mediumType == 0) |
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138 { |
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139 // [2] Device specific parameter |
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140 // SBC-3 6.3.1 |
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141 // get the WP bit from the Device Specific parameters |
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142 iWriteProtected = (deviceSpecificParameter & 0x80) ? ETrue : EFalse; |
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143 } |
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144 else |
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145 { |
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146 // unsupported medium type |
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147 iWriteProtected = EFalse; |
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148 } |
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149 |
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150 // [3] Block Descriptor Length |
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151 // 0x00 for no descriptors |
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152 |
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153 // No Block Descriptors |
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154 |
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155 // No Mode Pages |
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156 |
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157 } |
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158 |
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159 |
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160 |
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161 // **** READ CAPACITY (10) *** |
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162 TInt TScsiClientReadCapacity10Req::EncodeRequestL(TDes8& aBuffer) const |
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163 { |
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164 __MSFNSLOG |
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165 __SCSIPRINT(_L("<-- READ CAPACITY 10")); |
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166 TInt length = TScsiClientReq::EncodeRequestL(aBuffer); |
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167 |
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168 if (iLba) |
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169 { |
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170 // PMI bit |
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171 aBuffer[8] = 0x01; |
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172 // LBA |
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173 BigEndian::Put32(&aBuffer[2], iLba); |
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174 } |
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175 return length; |
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176 } |
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177 |
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178 |
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179 void TScsiClientReadCapacity10Resp::DecodeL(const TDesC8& aPtr) |
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180 { |
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181 __MSFNSLOG |
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182 __SCSIPRINT(_L("--> SCSI READ CAPACITY (10)")); |
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183 iLba = BigEndian::Get32(&aPtr[0]); |
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184 iBlockSize = BigEndian::Get32(&aPtr[4]); |
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185 } |
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186 |
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187 |
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188 // **** RdWr10 **** |
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189 TInt TScsiClientRdWr10Req::EncodeRequestL(TDes8& aBuffer) const |
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190 { |
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191 __MSFNSLOG |
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192 TInt length = TScsiClientReq::EncodeRequestL(aBuffer); |
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193 |
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194 // PROTECT |
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195 if (iProtect) |
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196 aBuffer[1] = iProtect << 5; |
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197 |
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198 __SCSIPRINT2(_L("LBA=%08x LEN=%08x"), iLogicalBlockAddress, iBlockTransferLength); |
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199 // LOGICAL BLOCK ADDRESS |
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200 BigEndian::Put32(&aBuffer[2], iLogicalBlockAddress); |
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201 // TRANSFER LENGTH |
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202 BigEndian::Put16(&aBuffer[7], iBlockTransferLength); |
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203 return length; |
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204 } |
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205 |
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206 // **** READ (10) **** |
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207 TInt TScsiClientRead10Req::EncodeRequestL(TDes8& aBuffer) const |
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208 { |
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209 __MSFNSLOG |
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210 __SCSIPRINT(_L("<-- SCSI READ (10)")); |
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211 TInt length = TScsiClientRdWr10Req::EncodeRequestL(aBuffer); |
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212 return length; |
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213 } |
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214 |
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215 |
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216 // **** START STOP UNIT **** |
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217 TInt TScsiClientStartStopUnitReq::EncodeRequestL(TDes8& aBuffer) const |
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218 { |
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219 __MSFNSLOG |
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220 __SCSIPRINT(_L("--> SCSI START STOP UNIT")); |
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221 TInt length = TScsiClientReq::EncodeRequestL(aBuffer); |
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222 |
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223 // byte 1 mask |
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224 const TUint8 KImmedMask = 0x01; |
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225 |
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226 // byte 4 mask |
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227 const TUint8 KStartMask = 0x01; |
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228 const TUint8 KLoejMask = 0x02; |
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229 |
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230 if (iImmed) |
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231 aBuffer[1] |= KImmedMask; |
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232 if (iStart) |
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233 aBuffer[4] |= KStartMask; |
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234 if (iLoej) |
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235 aBuffer[4] |= KLoejMask; |
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236 return length; |
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237 } |
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238 |
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239 |
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240 // **** WRITE (10) **** |
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241 TInt TScsiClientWrite10Req::EncodeRequestL(TDes8& aBuffer) const |
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242 { |
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243 __MSFNSLOG |
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244 __SCSIPRINT(_L("<-- SCSI WRITE 10")); |
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245 |
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246 TInt length = TScsiClientRdWr10Req::EncodeRequestL(aBuffer); |
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247 return length; |
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248 } |
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249 |