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1498 | serge | 1 | /****************************************************************************** |
2 | * |
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3 | * Module Name: dtsubtable.c - handling of subtables within ACPI tables |
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4 | * |
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5 | *****************************************************************************/ |
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6 | |||
7 | /****************************************************************************** |
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8 | * |
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9 | * 1. Copyright Notice |
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10 | * |
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2216 | Serge | 11 | * Some or all of this work - Copyright (c) 1999 - 2011, Intel Corp. |
1498 | serge | 12 | * All rights reserved. |
13 | * |
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14 | * 2. License |
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15 | * |
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16 | * 2.1. This is your license from Intel Corp. under its intellectual property |
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17 | * rights. You may have additional license terms from the party that provided |
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18 | * you this software, covering your right to use that party's intellectual |
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19 | * property rights. |
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20 | * |
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21 | * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a |
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22 | * copy of the source code appearing in this file ("Covered Code") an |
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23 | * irrevocable, perpetual, worldwide license under Intel's copyrights in the |
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24 | * base code distributed originally by Intel ("Original Intel Code") to copy, |
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25 | * make derivatives, distribute, use and display any portion of the Covered |
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26 | * Code in any form, with the right to sublicense such rights; and |
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27 | * |
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28 | * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent |
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29 | * license (with the right to sublicense), under only those claims of Intel |
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30 | * patents that are infringed by the Original Intel Code, to make, use, sell, |
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31 | * offer to sell, and import the Covered Code and derivative works thereof |
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32 | * solely to the minimum extent necessary to exercise the above copyright |
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33 | * license, and in no event shall the patent license extend to any additions |
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34 | * to or modifications of the Original Intel Code. No other license or right |
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35 | * is granted directly or by implication, estoppel or otherwise; |
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36 | * |
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37 | * The above copyright and patent license is granted only if the following |
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38 | * conditions are met: |
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39 | * |
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40 | * 3. Conditions |
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41 | * |
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42 | * 3.1. Redistribution of Source with Rights to Further Distribute Source. |
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43 | * Redistribution of source code of any substantial portion of the Covered |
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44 | * Code or modification with rights to further distribute source must include |
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45 | * the above Copyright Notice, the above License, this list of Conditions, |
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46 | * and the following Disclaimer and Export Compliance provision. In addition, |
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47 | * Licensee must cause all Covered Code to which Licensee contributes to |
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48 | * contain a file documenting the changes Licensee made to create that Covered |
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49 | * Code and the date of any change. Licensee must include in that file the |
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50 | * documentation of any changes made by any predecessor Licensee. Licensee |
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51 | * must include a prominent statement that the modification is derived, |
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52 | * directly or indirectly, from Original Intel Code. |
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53 | * |
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54 | * 3.2. Redistribution of Source with no Rights to Further Distribute Source. |
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55 | * Redistribution of source code of any substantial portion of the Covered |
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56 | * Code or modification without rights to further distribute source must |
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57 | * include the following Disclaimer and Export Compliance provision in the |
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58 | * documentation and/or other materials provided with distribution. In |
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59 | * addition, Licensee may not authorize further sublicense of source of any |
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60 | * portion of the Covered Code, and must include terms to the effect that the |
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61 | * license from Licensee to its licensee is limited to the intellectual |
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62 | * property embodied in the software Licensee provides to its licensee, and |
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63 | * not to intellectual property embodied in modifications its licensee may |
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64 | * make. |
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65 | * |
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66 | * 3.3. Redistribution of Executable. Redistribution in executable form of any |
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67 | * substantial portion of the Covered Code or modification must reproduce the |
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68 | * above Copyright Notice, and the following Disclaimer and Export Compliance |
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69 | * provision in the documentation and/or other materials provided with the |
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70 | * distribution. |
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71 | * |
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72 | * 3.4. Intel retains all right, title, and interest in and to the Original |
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73 | * Intel Code. |
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74 | * |
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75 | * 3.5. Neither the name Intel nor any other trademark owned or controlled by |
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76 | * Intel shall be used in advertising or otherwise to promote the sale, use or |
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77 | * other dealings in products derived from or relating to the Covered Code |
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78 | * without prior written authorization from Intel. |
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79 | * |
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80 | * 4. Disclaimer and Export Compliance |
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81 | * |
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82 | * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED |
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83 | * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE |
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84 | * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, |
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85 | * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY |
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86 | * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY |
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87 | * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A |
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88 | * PARTICULAR PURPOSE. |
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89 | * |
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90 | * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES |
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91 | * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR |
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92 | * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, |
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93 | * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY |
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94 | * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL |
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95 | * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS |
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96 | * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY |
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97 | * LIMITED REMEDY. |
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98 | * |
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99 | * 4.3. Licensee shall not export, either directly or indirectly, any of this |
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100 | * software or system incorporating such software without first obtaining any |
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101 | * required license or other approval from the U. S. Department of Commerce or |
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102 | * any other agency or department of the United States Government. In the |
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103 | * event Licensee exports any such software from the United States or |
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104 | * re-exports any such software from a foreign destination, Licensee shall |
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105 | * ensure that the distribution and export/re-export of the software is in |
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106 | * compliance with all laws, regulations, orders, or other restrictions of the |
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107 | * U.S. Export Administration Regulations. Licensee agrees that neither it nor |
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108 | * any of its subsidiaries will export/re-export any technical data, process, |
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109 | * software, or service, directly or indirectly, to any country for which the |
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110 | * United States government or any agency thereof requires an export license, |
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111 | * other governmental approval, or letter of assurance, without first obtaining |
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112 | * such license, approval or letter. |
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113 | * |
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114 | *****************************************************************************/ |
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115 | |||
116 | #define __DTSUBTABLE_C__ |
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117 | |||
118 | #include "aslcompiler.h" |
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119 | #include "dtcompiler.h" |
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120 | |||
121 | #define _COMPONENT DT_COMPILER |
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122 | ACPI_MODULE_NAME ("dtsubtable") |
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123 | |||
124 | |||
125 | /****************************************************************************** |
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126 | * |
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127 | * FUNCTION: DtCreateSubtable |
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128 | * |
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129 | * PARAMETERS: Buffer - Input buffer |
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130 | * Length - Buffer length |
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131 | * RetSubtable - Returned newly created subtable |
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132 | * |
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133 | * RETURN: None |
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134 | * |
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135 | * DESCRIPTION: Create a subtable that is not listed with ACPI_DMTABLE_INFO |
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136 | * For example, FACS has 24 bytes reserved at the end |
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137 | * and it's not listed at AcpiDmTableInfoFacs |
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138 | * |
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139 | *****************************************************************************/ |
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140 | |||
141 | void |
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142 | DtCreateSubtable ( |
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143 | UINT8 *Buffer, |
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144 | UINT32 Length, |
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145 | DT_SUBTABLE **RetSubtable) |
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146 | { |
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147 | DT_SUBTABLE *Subtable; |
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148 | |||
149 | |||
150 | Subtable = UtLocalCalloc (sizeof (DT_SUBTABLE)); |
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151 | |||
152 | /* Create a new buffer for the subtable data */ |
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153 | |||
154 | Subtable->Buffer = UtLocalCalloc (Length); |
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155 | ACPI_MEMCPY (Subtable->Buffer, Buffer, Length); |
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156 | |||
157 | Subtable->Length = Length; |
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158 | Subtable->TotalLength = Length; |
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159 | |||
160 | *RetSubtable = Subtable; |
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161 | } |
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162 | |||
163 | |||
164 | /****************************************************************************** |
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165 | * |
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166 | * FUNCTION: DtInsertSubtable |
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167 | * |
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168 | * PARAMETERS: ParentTable - The Parent of the new subtable |
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169 | * Subtable - The new subtable to insert |
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170 | * |
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171 | * RETURN: None |
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172 | * |
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173 | * DESCRIPTION: Insert the new subtable to the parent table |
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174 | * |
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175 | *****************************************************************************/ |
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176 | |||
177 | void |
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178 | DtInsertSubtable ( |
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179 | DT_SUBTABLE *ParentTable, |
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180 | DT_SUBTABLE *Subtable) |
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181 | { |
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182 | DT_SUBTABLE *ChildTable; |
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183 | |||
184 | |||
185 | Subtable->Peer = NULL; |
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186 | Subtable->Parent = ParentTable; |
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187 | |||
188 | /* Link the new entry into the child list */ |
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189 | |||
190 | if (!ParentTable->Child) |
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191 | { |
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192 | ParentTable->Child = Subtable; |
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193 | } |
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194 | else |
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195 | { |
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196 | /* Walk to the end of the child list */ |
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197 | |||
198 | ChildTable = ParentTable->Child; |
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199 | while (ChildTable->Peer) |
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200 | { |
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201 | ChildTable = ChildTable->Peer; |
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202 | } |
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203 | |||
204 | /* Add new subtable at the end of the child list */ |
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205 | |||
206 | ChildTable->Peer = Subtable; |
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207 | } |
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208 | } |
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209 | |||
210 | |||
211 | /****************************************************************************** |
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212 | * |
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213 | * FUNCTION: DtPushSubtable |
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214 | * |
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215 | * PARAMETERS: Subtable - Subtable to push |
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216 | * |
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217 | * RETURN: None |
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218 | * |
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219 | * DESCRIPTION: Push a subtable onto a subtable stack |
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220 | * |
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221 | *****************************************************************************/ |
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222 | |||
223 | void |
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224 | DtPushSubtable ( |
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225 | DT_SUBTABLE *Subtable) |
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226 | { |
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227 | |||
228 | Subtable->StackTop = Gbl_SubtableStack; |
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229 | Gbl_SubtableStack = Subtable; |
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230 | } |
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231 | |||
232 | |||
233 | /****************************************************************************** |
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234 | * |
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235 | * FUNCTION: DtPopSubtable |
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236 | * |
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237 | * PARAMETERS: None |
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238 | * |
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239 | * RETURN: None |
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240 | * |
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241 | * DESCRIPTION: Pop a subtable from a subtable stack. Uses global SubtableStack |
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242 | * |
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243 | *****************************************************************************/ |
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244 | |||
245 | void |
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246 | DtPopSubtable ( |
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247 | void) |
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248 | { |
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249 | DT_SUBTABLE *Subtable; |
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250 | |||
251 | |||
252 | Subtable = Gbl_SubtableStack; |
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253 | |||
254 | if (Subtable) |
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255 | { |
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256 | Gbl_SubtableStack = Subtable->StackTop; |
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257 | } |
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258 | } |
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259 | |||
260 | |||
261 | /****************************************************************************** |
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262 | * |
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263 | * FUNCTION: DtPeekSubtable |
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264 | * |
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265 | * PARAMETERS: None |
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266 | * |
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267 | * RETURN: The subtable on top of stack |
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268 | * |
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269 | * DESCRIPTION: Get the subtable on top of stack |
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270 | * |
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271 | *****************************************************************************/ |
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272 | |||
273 | DT_SUBTABLE * |
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274 | DtPeekSubtable ( |
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275 | void) |
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276 | { |
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277 | |||
278 | return (Gbl_SubtableStack); |
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279 | } |
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280 | |||
281 | |||
282 | /****************************************************************************** |
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283 | * |
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284 | * FUNCTION: DtGetNextSubtable |
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285 | * |
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286 | * PARAMETERS: ParentTable - Parent table whose children we are |
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287 | * getting |
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288 | * ChildTable - Previous child that was found. |
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289 | * The NEXT child will be returned |
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290 | * |
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291 | * RETURN: Pointer to the NEXT child or NULL if none is found. |
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292 | * |
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293 | * DESCRIPTION: Return the next peer subtable within the tree. |
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294 | * |
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295 | *****************************************************************************/ |
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296 | |||
297 | DT_SUBTABLE * |
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298 | DtGetNextSubtable ( |
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299 | DT_SUBTABLE *ParentTable, |
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300 | DT_SUBTABLE *ChildTable) |
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301 | { |
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302 | ACPI_FUNCTION_ENTRY (); |
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303 | |||
304 | |||
305 | if (!ChildTable) |
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306 | { |
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307 | /* It's really the parent's _scope_ that we want */ |
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308 | |||
309 | return (ParentTable->Child); |
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310 | } |
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311 | |||
312 | /* Otherwise just return the next peer (NULL if at end-of-list) */ |
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313 | |||
314 | return (ChildTable->Peer); |
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315 | } |
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316 | |||
317 | |||
318 | /****************************************************************************** |
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319 | * |
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320 | * FUNCTION: DtGetParentSubtable |
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321 | * |
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322 | * PARAMETERS: Subtable - Current subtable |
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323 | * |
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324 | * RETURN: Parent of the given subtable |
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325 | * |
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326 | * DESCRIPTION: Get the parent of the given subtable in the tree |
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327 | * |
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328 | *****************************************************************************/ |
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329 | |||
330 | DT_SUBTABLE * |
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331 | DtGetParentSubtable ( |
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332 | DT_SUBTABLE *Subtable) |
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333 | { |
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334 | |||
335 | if (!Subtable) |
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336 | { |
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337 | return (NULL); |
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338 | } |
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339 | |||
340 | return (Subtable->Parent); |
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341 | } |
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342 | |||
343 | |||
344 | /****************************************************************************** |
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345 | * |
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346 | * FUNCTION: DtGetSubtableLength |
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347 | * |
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348 | * PARAMETERS: Field - Current field list pointer |
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349 | * Info - Data table info |
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350 | * |
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351 | * RETURN: Subtable length |
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352 | * |
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353 | * DESCRIPTION: Get length of bytes needed to compile the subtable |
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354 | * |
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355 | *****************************************************************************/ |
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356 | |||
357 | UINT32 |
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358 | DtGetSubtableLength ( |
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359 | DT_FIELD *Field, |
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360 | ACPI_DMTABLE_INFO *Info) |
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361 | { |
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362 | UINT32 ByteLength = 0; |
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2216 | Serge | 363 | UINT8 Step; |
364 | UINT8 i; |
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1498 | serge | 365 | |
366 | |||
367 | /* Walk entire Info table; Null name terminates */ |
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368 | |||
369 | for (; Info->Name; Info++) |
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370 | { |
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2216 | Serge | 371 | if (!Field) |
372 | { |
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373 | goto Error; |
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374 | } |
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375 | |||
1498 | serge | 376 | ByteLength += DtGetFieldLength (Field, Info); |
2216 | Serge | 377 | |
378 | switch (Info->Opcode) |
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379 | { |
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380 | case ACPI_DMT_GAS: |
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381 | Step = 5; |
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382 | break; |
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383 | |||
384 | case ACPI_DMT_HESTNTFY: |
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385 | Step = 9; |
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386 | break; |
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387 | |||
388 | default: |
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389 | Step = 1; |
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390 | break; |
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391 | } |
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392 | |||
393 | for (i = 0; i < Step; i++) |
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394 | { |
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395 | if (!Field) |
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396 | { |
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397 | goto Error; |
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398 | } |
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399 | |||
400 | Field = Field->Next; |
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401 | } |
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1498 | serge | 402 | } |
403 | |||
404 | return (ByteLength); |
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2216 | Serge | 405 | |
406 | Error: |
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407 | if (!Field) |
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408 | { |
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409 | sprintf (MsgBuffer, "Found NULL field - Field name \"%s\" needed", |
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410 | Info->Name); |
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411 | DtFatal (ASL_MSG_COMPILER_INTERNAL, NULL, MsgBuffer); |
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412 | } |
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413 | |||
414 | return (ASL_EOF); |
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1498 | serge | 415 | } |
416 | |||
417 | |||
418 | /****************************************************************************** |
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419 | * |
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420 | * FUNCTION: DtSetSubtableLength |
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421 | * |
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422 | * PARAMETERS: Subtable - Subtable |
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423 | * |
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424 | * RETURN: None |
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425 | * |
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426 | * DESCRIPTION: Set length of the subtable into its length field |
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427 | * |
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428 | *****************************************************************************/ |
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429 | |||
430 | void |
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431 | DtSetSubtableLength ( |
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432 | DT_SUBTABLE *Subtable) |
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433 | { |
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434 | |||
435 | if (!Subtable->LengthField) |
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436 | { |
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437 | return; |
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438 | } |
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439 | |||
440 | ACPI_MEMCPY (Subtable->LengthField, &Subtable->TotalLength, |
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441 | Subtable->SizeOfLengthField); |
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442 | }> |