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1498 | serge | 1 | /****************************************************************************** |
2 | * |
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3 | * Module Name: dswload - Dispatcher namespace load callbacks |
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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 __ASLLOAD_C__ |
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117 | |||
118 | #include "aslcompiler.h" |
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119 | #include "amlcode.h" |
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120 | #include "acdispat.h" |
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121 | #include "acnamesp.h" |
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122 | |||
123 | #include "aslcompiler.y.h" |
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124 | |||
125 | #define _COMPONENT ACPI_COMPILER |
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126 | ACPI_MODULE_NAME ("aslload") |
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127 | |||
128 | /* Local prototypes */ |
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129 | |||
130 | static ACPI_STATUS |
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131 | LdLoadFieldElements ( |
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132 | ACPI_PARSE_OBJECT *Op, |
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133 | ACPI_WALK_STATE *WalkState); |
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134 | |||
135 | static ACPI_STATUS |
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136 | LdLoadResourceElements ( |
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137 | ACPI_PARSE_OBJECT *Op, |
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138 | ACPI_WALK_STATE *WalkState); |
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139 | |||
140 | static ACPI_STATUS |
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141 | LdNamespace1Begin ( |
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142 | ACPI_PARSE_OBJECT *Op, |
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143 | UINT32 Level, |
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144 | void *Context); |
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145 | |||
146 | static ACPI_STATUS |
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147 | LdNamespace2Begin ( |
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148 | ACPI_PARSE_OBJECT *Op, |
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149 | UINT32 Level, |
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150 | void *Context); |
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151 | |||
152 | static ACPI_STATUS |
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153 | LdCommonNamespaceEnd ( |
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154 | ACPI_PARSE_OBJECT *Op, |
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155 | UINT32 Level, |
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156 | void *Context); |
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157 | |||
158 | |||
159 | /******************************************************************************* |
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160 | * |
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161 | * FUNCTION: LdLoadNamespace |
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162 | * |
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163 | * PARAMETERS: RootOp - Root of the parse tree |
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164 | * |
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165 | * RETURN: Status |
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166 | * |
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167 | * DESCRIPTION: Perform a walk of the parse tree that in turn loads all of the |
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168 | * named ASL/AML objects into the namespace. The namespace is |
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169 | * constructed in order to resolve named references and references |
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170 | * to named fields within resource templates/descriptors. |
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171 | * |
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172 | ******************************************************************************/ |
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173 | |||
174 | ACPI_STATUS |
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175 | LdLoadNamespace ( |
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176 | ACPI_PARSE_OBJECT *RootOp) |
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177 | { |
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178 | ACPI_WALK_STATE *WalkState; |
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179 | |||
180 | |||
181 | DbgPrint (ASL_DEBUG_OUTPUT, "\nCreating namespace\n\n"); |
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182 | |||
183 | /* Create a new walk state */ |
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184 | |||
185 | WalkState = AcpiDsCreateWalkState (0, NULL, NULL, NULL); |
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186 | if (!WalkState) |
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187 | { |
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188 | return AE_NO_MEMORY; |
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189 | } |
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190 | |||
191 | /* Walk the entire parse tree, first pass */ |
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192 | |||
193 | TrWalkParseTree (RootOp, ASL_WALK_VISIT_TWICE, LdNamespace1Begin, |
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194 | LdCommonNamespaceEnd, WalkState); |
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195 | |||
196 | /* Second pass to handle forward references */ |
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197 | |||
198 | TrWalkParseTree (RootOp, ASL_WALK_VISIT_TWICE, LdNamespace2Begin, |
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199 | LdCommonNamespaceEnd, WalkState); |
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200 | |||
201 | /* Dump the namespace if debug is enabled */ |
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202 | |||
203 | AcpiNsDumpTables (ACPI_NS_ALL, ACPI_UINT32_MAX); |
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204 | return AE_OK; |
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205 | } |
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206 | |||
207 | |||
208 | /******************************************************************************* |
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209 | * |
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210 | * FUNCTION: LdLoadFieldElements |
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211 | * |
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212 | * PARAMETERS: Op - Parent node (Field) |
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213 | * WalkState - Current walk state |
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214 | * |
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215 | * RETURN: Status |
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216 | * |
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217 | * DESCRIPTION: Enter the named elements of the field (children of the parent) |
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218 | * into the namespace. |
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219 | * |
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220 | ******************************************************************************/ |
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221 | |||
222 | static ACPI_STATUS |
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223 | LdLoadFieldElements ( |
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224 | ACPI_PARSE_OBJECT *Op, |
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225 | ACPI_WALK_STATE *WalkState) |
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226 | { |
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227 | ACPI_PARSE_OBJECT *Child = NULL; |
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228 | ACPI_NAMESPACE_NODE *Node; |
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229 | ACPI_STATUS Status; |
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230 | |||
231 | |||
232 | /* Get the first named field element */ |
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233 | |||
234 | switch (Op->Asl.AmlOpcode) |
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235 | { |
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236 | case AML_BANK_FIELD_OP: |
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237 | |||
238 | Child = UtGetArg (Op, 6); |
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239 | break; |
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240 | |||
241 | case AML_INDEX_FIELD_OP: |
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242 | |||
243 | Child = UtGetArg (Op, 5); |
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244 | break; |
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245 | |||
246 | case AML_FIELD_OP: |
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247 | |||
248 | Child = UtGetArg (Op, 4); |
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249 | break; |
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250 | |||
251 | default: |
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252 | /* No other opcodes should arrive here */ |
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253 | return (AE_BAD_PARAMETER); |
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254 | } |
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255 | |||
256 | /* Enter all elements into the namespace */ |
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257 | |||
258 | while (Child) |
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259 | { |
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260 | switch (Child->Asl.AmlOpcode) |
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261 | { |
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262 | case AML_INT_RESERVEDFIELD_OP: |
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263 | case AML_INT_ACCESSFIELD_OP: |
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264 | |||
265 | break; |
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266 | |||
267 | default: |
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268 | |||
269 | Status = AcpiNsLookup (WalkState->ScopeInfo, |
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270 | Child->Asl.Value.String, |
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271 | ACPI_TYPE_LOCAL_REGION_FIELD, |
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272 | ACPI_IMODE_LOAD_PASS1, |
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273 | ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE | |
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274 | ACPI_NS_ERROR_IF_FOUND, |
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275 | NULL, &Node); |
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276 | if (ACPI_FAILURE (Status)) |
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277 | { |
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278 | if (Status != AE_ALREADY_EXISTS) |
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279 | { |
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280 | AslError (ASL_ERROR, ASL_MSG_CORE_EXCEPTION, Child, |
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281 | Child->Asl.Value.String); |
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282 | return (Status); |
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283 | } |
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284 | |||
285 | /* |
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286 | * The name already exists in this scope |
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287 | * But continue processing the elements |
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288 | */ |
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289 | AslError (ASL_ERROR, ASL_MSG_NAME_EXISTS, Child, |
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290 | Child->Asl.Value.String); |
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291 | } |
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292 | else |
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293 | { |
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294 | Child->Asl.Node = Node; |
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295 | Node->Op = Child; |
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296 | } |
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297 | break; |
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298 | } |
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299 | Child = Child->Asl.Next; |
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300 | } |
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301 | return (AE_OK); |
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302 | } |
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303 | |||
304 | |||
305 | /******************************************************************************* |
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306 | * |
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307 | * FUNCTION: LdLoadResourceElements |
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308 | * |
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309 | * PARAMETERS: Op - Parent node (Resource Descriptor) |
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310 | * WalkState - Current walk state |
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311 | * |
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312 | * RETURN: Status |
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313 | * |
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314 | * DESCRIPTION: Enter the named elements of the resource descriptor (children |
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315 | * of the parent) into the namespace. |
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316 | * |
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317 | * NOTE: In the real AML namespace, these named elements never exist. But |
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318 | * we simply use the namespace here as a symbol table so we can look |
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319 | * them up as they are referenced. |
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320 | * |
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321 | ******************************************************************************/ |
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322 | |||
323 | static ACPI_STATUS |
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324 | LdLoadResourceElements ( |
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325 | ACPI_PARSE_OBJECT *Op, |
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326 | ACPI_WALK_STATE *WalkState) |
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327 | { |
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328 | ACPI_PARSE_OBJECT *InitializerOp = NULL; |
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329 | ACPI_NAMESPACE_NODE *Node; |
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330 | ACPI_STATUS Status; |
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331 | |||
332 | |||
333 | /* |
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334 | * Enter the resource name into the namespace. Name must not already exist. |
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335 | * This opens a scope, so later field names are guaranteed to be new/unique. |
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336 | */ |
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337 | Status = AcpiNsLookup (WalkState->ScopeInfo, Op->Asl.Namepath, |
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338 | ACPI_TYPE_LOCAL_RESOURCE, ACPI_IMODE_LOAD_PASS1, |
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339 | ACPI_NS_NO_UPSEARCH | ACPI_NS_ERROR_IF_FOUND, |
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340 | WalkState, &Node); |
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341 | if (ACPI_FAILURE (Status)) |
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342 | { |
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343 | if (Status == AE_ALREADY_EXISTS) |
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344 | { |
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345 | /* Actual node causing the error was saved in ParentMethod */ |
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346 | |||
347 | AslError (ASL_ERROR, ASL_MSG_NAME_EXISTS, |
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348 | (ACPI_PARSE_OBJECT *) Op->Asl.ParentMethod, Op->Asl.Namepath); |
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349 | return (AE_OK); |
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350 | } |
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351 | return (Status); |
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352 | } |
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353 | |||
354 | Node->Value = (UINT32) Op->Asl.Value.Integer; |
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355 | Node->Op = Op; |
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356 | Op->Asl.Node = Node; |
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357 | |||
358 | /* |
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359 | * Now enter the predefined fields, for easy lookup when referenced |
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360 | * by the source ASL |
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361 | */ |
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362 | InitializerOp = ASL_GET_CHILD_NODE (Op); |
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363 | while (InitializerOp) |
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364 | { |
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365 | |||
366 | if (InitializerOp->Asl.ExternalName) |
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367 | { |
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368 | Status = AcpiNsLookup (WalkState->ScopeInfo, |
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369 | InitializerOp->Asl.ExternalName, |
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370 | ACPI_TYPE_LOCAL_RESOURCE_FIELD, |
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371 | ACPI_IMODE_LOAD_PASS1, |
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372 | ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE, |
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373 | NULL, &Node); |
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374 | if (ACPI_FAILURE (Status)) |
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375 | { |
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376 | return (Status); |
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377 | } |
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378 | |||
379 | /* |
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380 | * Store the field offset in the namespace node so it |
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381 | * can be used when the field is referenced |
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382 | */ |
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383 | Node->Value = (UINT32) InitializerOp->Asl.Value.Integer; |
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384 | InitializerOp->Asl.Node = Node; |
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385 | Node->Op = InitializerOp; |
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386 | |||
387 | /* Pass thru the field type (Bitfield or Bytefield) */ |
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388 | |||
389 | if (InitializerOp->Asl.CompileFlags & NODE_IS_BIT_OFFSET) |
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390 | { |
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391 | Node->Flags |= ANOBJ_IS_BIT_OFFSET; |
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392 | } |
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393 | } |
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394 | InitializerOp = ASL_GET_PEER_NODE (InitializerOp); |
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395 | } |
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396 | |||
397 | return (AE_OK); |
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398 | } |
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399 | |||
400 | |||
401 | /******************************************************************************* |
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402 | * |
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403 | * FUNCTION: LdNamespace1Begin |
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404 | * |
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405 | * PARAMETERS: ASL_WALK_CALLBACK |
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406 | * |
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407 | * RETURN: Status |
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408 | * |
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409 | * DESCRIPTION: Descending callback used during the parse tree walk. If this |
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410 | * is a named AML opcode, enter into the namespace |
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411 | * |
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412 | ******************************************************************************/ |
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413 | |||
414 | static ACPI_STATUS |
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415 | LdNamespace1Begin ( |
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416 | ACPI_PARSE_OBJECT *Op, |
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417 | UINT32 Level, |
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418 | void *Context) |
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419 | { |
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420 | ACPI_WALK_STATE *WalkState = (ACPI_WALK_STATE *) Context; |
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421 | ACPI_NAMESPACE_NODE *Node; |
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422 | ACPI_STATUS Status; |
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423 | ACPI_OBJECT_TYPE ObjectType; |
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424 | ACPI_OBJECT_TYPE ActualObjectType = ACPI_TYPE_ANY; |
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425 | char *Path; |
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426 | UINT32 Flags = ACPI_NS_NO_UPSEARCH; |
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427 | ACPI_PARSE_OBJECT *Arg; |
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428 | UINT32 i; |
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429 | BOOLEAN ForceNewScope = FALSE; |
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430 | |||
431 | |||
432 | ACPI_FUNCTION_NAME (LdNamespace1Begin); |
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433 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op %p [%s]\n", |
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434 | Op, Op->Asl.ParseOpName)); |
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435 | |||
436 | |||
437 | /* |
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438 | * We are only interested in opcodes that have an associated name |
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439 | * (or multiple names) |
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440 | */ |
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441 | switch (Op->Asl.AmlOpcode) |
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442 | { |
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443 | case AML_BANK_FIELD_OP: |
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444 | case AML_INDEX_FIELD_OP: |
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445 | case AML_FIELD_OP: |
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446 | |||
447 | Status = LdLoadFieldElements (Op, WalkState); |
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448 | return (Status); |
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449 | |||
450 | default: |
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451 | |||
452 | /* All other opcodes go below */ |
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453 | break; |
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454 | } |
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455 | |||
456 | /* Check if this object has already been installed in the namespace */ |
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457 | |||
458 | if (Op->Asl.Node) |
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459 | { |
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460 | return (AE_OK); |
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461 | } |
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462 | |||
463 | Path = Op->Asl.Namepath; |
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464 | if (!Path) |
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465 | { |
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466 | return (AE_OK); |
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467 | } |
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468 | |||
469 | /* Map the raw opcode into an internal object type */ |
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470 | |||
471 | switch (Op->Asl.ParseOpcode) |
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472 | { |
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473 | case PARSEOP_NAME: |
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474 | |||
475 | Arg = Op->Asl.Child; /* Get the NameSeg/NameString node */ |
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476 | Arg = Arg->Asl.Next; /* First peer is the object to be associated with the name */ |
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477 | |||
478 | /* |
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479 | * If this name refers to a ResourceTemplate, we will need to open |
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480 | * a new scope so that the resource subfield names can be entered into |
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481 | * the namespace underneath this name |
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482 | */ |
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483 | if (Op->Asl.CompileFlags & NODE_IS_RESOURCE_DESC) |
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484 | { |
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485 | ForceNewScope = TRUE; |
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486 | } |
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487 | |||
488 | /* Get the data type associated with the named object, not the name itself */ |
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489 | |||
490 | /* Log2 loop to convert from Btype (binary) to Etype (encoded) */ |
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491 | |||
492 | ObjectType = 1; |
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493 | for (i = 1; i < Arg->Asl.AcpiBtype; i *= 2) |
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494 | { |
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495 | ObjectType++; |
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496 | } |
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497 | break; |
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498 | |||
499 | |||
500 | case PARSEOP_EXTERNAL: |
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501 | |||
502 | /* |
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503 | * "External" simply enters a name and type into the namespace. |
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504 | * We must be careful to not open a new scope, however, no matter |
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505 | * what type the external name refers to (e.g., a method) |
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506 | * |
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507 | * first child is name, next child is ObjectType |
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508 | */ |
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509 | ActualObjectType = (UINT8) Op->Asl.Child->Asl.Next->Asl.Value.Integer; |
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510 | ObjectType = ACPI_TYPE_ANY; |
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511 | |||
512 | /* |
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513 | * We will mark every new node along the path as "External". This |
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514 | * allows some or all of the nodes to be created later in the ASL |
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515 | * code. Handles cases like this: |
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516 | * |
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517 | * External (\_SB_.PCI0.ABCD, IntObj) |
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518 | * Scope (_SB_) |
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519 | * { |
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520 | * Device (PCI0) |
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521 | * { |
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522 | * } |
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523 | * } |
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524 | * Method (X) |
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525 | * { |
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526 | * Store (\_SB_.PCI0.ABCD, Local0) |
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527 | * } |
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528 | */ |
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529 | Flags |= ACPI_NS_EXTERNAL; |
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530 | break; |
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531 | |||
532 | case PARSEOP_DEFAULT_ARG: |
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533 | |||
534 | if (Op->Asl.CompileFlags == NODE_IS_RESOURCE_DESC) |
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535 | { |
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536 | Status = LdLoadResourceElements (Op, WalkState); |
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537 | return_ACPI_STATUS (Status); |
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538 | } |
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539 | |||
540 | ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode); |
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541 | break; |
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542 | |||
543 | |||
544 | case PARSEOP_SCOPE: |
||
545 | |||
546 | /* |
||
547 | * The name referenced by Scope(Name) must already exist at this point. |
||
548 | * In other words, forward references for Scope() are not supported. |
||
549 | * The only real reason for this is that the MS interpreter cannot |
||
550 | * handle this case. Perhaps someday this case can go away. |
||
551 | */ |
||
552 | Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ACPI_TYPE_ANY, |
||
553 | ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, |
||
554 | WalkState, &(Node)); |
||
555 | if (ACPI_FAILURE (Status)) |
||
556 | { |
||
557 | if (Status == AE_NOT_FOUND) |
||
558 | { |
||
559 | /* The name was not found, go ahead and create it */ |
||
560 | |||
561 | Status = AcpiNsLookup (WalkState->ScopeInfo, Path, |
||
562 | ACPI_TYPE_LOCAL_SCOPE, |
||
563 | ACPI_IMODE_LOAD_PASS1, Flags, |
||
564 | WalkState, &(Node)); |
||
565 | |||
566 | /* |
||
567 | * However, this is an error -- primarily because the MS |
||
568 | * interpreter can't handle a forward reference from the |
||
569 | * Scope() operator. |
||
570 | */ |
||
571 | AslError (ASL_ERROR, ASL_MSG_NOT_FOUND, Op, |
||
572 | Op->Asl.ExternalName); |
||
573 | AslError (ASL_ERROR, ASL_MSG_SCOPE_FWD_REF, Op, |
||
574 | Op->Asl.ExternalName); |
||
575 | goto FinishNode; |
||
576 | } |
||
577 | |||
578 | AslCoreSubsystemError (Op, Status, |
||
579 | "Failure from namespace lookup", FALSE); |
||
580 | |||
581 | return_ACPI_STATUS (Status); |
||
582 | } |
||
583 | |||
584 | /* We found a node with this name, now check the type */ |
||
585 | |||
586 | switch (Node->Type) |
||
587 | { |
||
588 | case ACPI_TYPE_LOCAL_SCOPE: |
||
589 | case ACPI_TYPE_DEVICE: |
||
590 | case ACPI_TYPE_POWER: |
||
591 | case ACPI_TYPE_PROCESSOR: |
||
592 | case ACPI_TYPE_THERMAL: |
||
593 | |||
594 | /* These are acceptable types - they all open a new scope */ |
||
595 | break; |
||
596 | |||
597 | case ACPI_TYPE_INTEGER: |
||
598 | case ACPI_TYPE_STRING: |
||
599 | case ACPI_TYPE_BUFFER: |
||
600 | |||
601 | /* |
||
602 | * These types we will allow, but we will change the type. |
||
603 | * This enables some existing code of the form: |
||
604 | * |
||
605 | * Name (DEB, 0) |
||
606 | * Scope (DEB) { ... } |
||
607 | * |
||
608 | * Which is used to workaround the fact that the MS interpreter |
||
609 | * does not allow Scope() forward references. |
||
610 | */ |
||
611 | sprintf (MsgBuffer, "%s [%s], changing type to [Scope]", |
||
612 | Op->Asl.ExternalName, AcpiUtGetTypeName (Node->Type)); |
||
613 | AslError (ASL_REMARK, ASL_MSG_SCOPE_TYPE, Op, MsgBuffer); |
||
614 | |||
615 | /* Switch the type to scope, open the new scope */ |
||
616 | |||
617 | Node->Type = ACPI_TYPE_LOCAL_SCOPE; |
||
618 | Status = AcpiDsScopeStackPush (Node, ACPI_TYPE_LOCAL_SCOPE, |
||
619 | WalkState); |
||
620 | if (ACPI_FAILURE (Status)) |
||
621 | { |
||
622 | return_ACPI_STATUS (Status); |
||
623 | } |
||
624 | break; |
||
625 | |||
626 | default: |
||
627 | |||
628 | /* All other types are an error */ |
||
629 | |||
630 | sprintf (MsgBuffer, "%s [%s]", Op->Asl.ExternalName, |
||
631 | AcpiUtGetTypeName (Node->Type)); |
||
632 | AslError (ASL_ERROR, ASL_MSG_SCOPE_TYPE, Op, MsgBuffer); |
||
633 | |||
634 | /* |
||
635 | * However, switch the type to be an actual scope so |
||
636 | * that compilation can continue without generating a whole |
||
637 | * cascade of additional errors. Open the new scope. |
||
638 | */ |
||
639 | Node->Type = ACPI_TYPE_LOCAL_SCOPE; |
||
640 | Status = AcpiDsScopeStackPush (Node, ACPI_TYPE_LOCAL_SCOPE, |
||
641 | WalkState); |
||
642 | if (ACPI_FAILURE (Status)) |
||
643 | { |
||
644 | return_ACPI_STATUS (Status); |
||
645 | } |
||
646 | break; |
||
647 | } |
||
648 | |||
649 | Status = AE_OK; |
||
650 | goto FinishNode; |
||
651 | |||
652 | |||
653 | default: |
||
654 | |||
655 | ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode); |
||
656 | break; |
||
657 | } |
||
658 | |||
659 | |||
660 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Loading name: %s, (%s)\n", |
||
661 | Op->Asl.ExternalName, AcpiUtGetTypeName (ObjectType))); |
||
662 | |||
663 | /* The name must not already exist */ |
||
664 | |||
665 | Flags |= ACPI_NS_ERROR_IF_FOUND; |
||
666 | |||
667 | /* |
||
668 | * Enter the named type into the internal namespace. We enter the name |
||
669 | * as we go downward in the parse tree. Any necessary subobjects that |
||
670 | * involve arguments to the opcode must be created as we go back up the |
||
671 | * parse tree later. |
||
672 | */ |
||
673 | Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType, |
||
674 | ACPI_IMODE_LOAD_PASS1, Flags, WalkState, &Node); |
||
675 | if (ACPI_FAILURE (Status)) |
||
676 | { |
||
677 | if (Status == AE_ALREADY_EXISTS) |
||
678 | { |
||
679 | /* The name already exists in this scope */ |
||
680 | |||
681 | if (Node->Type == ACPI_TYPE_LOCAL_SCOPE) |
||
682 | { |
||
683 | /* Allow multiple references to the same scope */ |
||
684 | |||
685 | Node->Type = (UINT8) ObjectType; |
||
686 | Status = AE_OK; |
||
687 | } |
||
688 | else if ((Node->Flags & ANOBJ_IS_EXTERNAL) && |
||
689 | (Op->Asl.ParseOpcode != PARSEOP_EXTERNAL)) |
||
690 | { |
||
691 | /* |
||
692 | * Allow one create on an object or segment that was |
||
693 | * previously declared External |
||
694 | */ |
||
695 | Node->Flags &= ~ANOBJ_IS_EXTERNAL; |
||
696 | Node->Type = (UINT8) ObjectType; |
||
697 | |||
698 | /* Just retyped a node, probably will need to open a scope */ |
||
699 | |||
700 | if (AcpiNsOpensScope (ObjectType)) |
||
701 | { |
||
702 | Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState); |
||
703 | if (ACPI_FAILURE (Status)) |
||
704 | { |
||
705 | return_ACPI_STATUS (Status); |
||
706 | } |
||
707 | } |
||
708 | Status = AE_OK; |
||
709 | } |
||
710 | else |
||
711 | { |
||
712 | /* Valid error, object already exists */ |
||
713 | |||
714 | AslError (ASL_ERROR, ASL_MSG_NAME_EXISTS, Op, |
||
715 | Op->Asl.ExternalName); |
||
716 | return_ACPI_STATUS (AE_OK); |
||
717 | } |
||
718 | } |
||
719 | else |
||
720 | { |
||
721 | AslCoreSubsystemError (Op, Status, |
||
722 | "Failure from namespace lookup", FALSE); |
||
723 | return_ACPI_STATUS (Status); |
||
724 | } |
||
725 | } |
||
726 | |||
727 | if (ForceNewScope) |
||
728 | { |
||
729 | Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState); |
||
730 | if (ACPI_FAILURE (Status)) |
||
731 | { |
||
732 | return_ACPI_STATUS (Status); |
||
733 | } |
||
734 | } |
||
735 | |||
736 | FinishNode: |
||
737 | /* |
||
738 | * Point the parse node to the new namespace node, and point |
||
739 | * the Node back to the original Parse node |
||
740 | */ |
||
741 | Op->Asl.Node = Node; |
||
742 | Node->Op = Op; |
||
743 | |||
744 | /* Set the actual data type if appropriate (EXTERNAL term only) */ |
||
745 | |||
746 | if (ActualObjectType != ACPI_TYPE_ANY) |
||
747 | { |
||
748 | Node->Type = (UINT8) ActualObjectType; |
||
749 | Node->Value = ASL_EXTERNAL_METHOD; |
||
750 | } |
||
751 | |||
752 | if (Op->Asl.ParseOpcode == PARSEOP_METHOD) |
||
753 | { |
||
754 | /* |
||
755 | * Get the method argument count from "Extra" and save |
||
756 | * it in the namespace node |
||
757 | */ |
||
758 | Node->Value = (UINT32) Op->Asl.Extra; |
||
759 | } |
||
760 | |||
761 | return_ACPI_STATUS (Status); |
||
762 | } |
||
763 | |||
764 | |||
765 | /******************************************************************************* |
||
766 | * |
||
767 | * FUNCTION: LdNamespace2Begin |
||
768 | * |
||
769 | * PARAMETERS: ASL_WALK_CALLBACK |
||
770 | * |
||
771 | * RETURN: Status |
||
772 | * |
||
773 | * DESCRIPTION: Descending callback used during the pass 2 parse tree walk. |
||
774 | * Second pass resolves some forward references. |
||
775 | * |
||
776 | * Notes: |
||
777 | * Currently only needs to handle the Alias operator. |
||
778 | * Could be used to allow forward references from the Scope() operator, but |
||
779 | * the MS interpreter does not allow this, so this compiler does not either. |
||
780 | * |
||
781 | ******************************************************************************/ |
||
782 | |||
783 | static ACPI_STATUS |
||
784 | LdNamespace2Begin ( |
||
785 | ACPI_PARSE_OBJECT *Op, |
||
786 | UINT32 Level, |
||
787 | void *Context) |
||
788 | { |
||
789 | ACPI_WALK_STATE *WalkState = (ACPI_WALK_STATE *) Context; |
||
790 | ACPI_STATUS Status; |
||
791 | ACPI_NAMESPACE_NODE *Node; |
||
792 | ACPI_OBJECT_TYPE ObjectType; |
||
793 | BOOLEAN ForceNewScope = FALSE; |
||
794 | ACPI_PARSE_OBJECT *Arg; |
||
795 | char *Path; |
||
796 | ACPI_NAMESPACE_NODE *TargetNode; |
||
797 | |||
798 | |||
799 | ACPI_FUNCTION_NAME (LdNamespace2Begin); |
||
800 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op %p [%s]\n", |
||
801 | Op, Op->Asl.ParseOpName)); |
||
802 | |||
803 | |||
804 | /* Ignore Ops with no namespace node */ |
||
805 | |||
806 | Node = Op->Asl.Node; |
||
807 | if (!Node) |
||
808 | { |
||
809 | return (AE_OK); |
||
810 | } |
||
811 | |||
812 | /* Get the type to determine if we should push the scope */ |
||
813 | |||
814 | if ((Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG) && |
||
815 | (Op->Asl.CompileFlags == NODE_IS_RESOURCE_DESC)) |
||
816 | { |
||
817 | ObjectType = ACPI_TYPE_LOCAL_RESOURCE; |
||
818 | } |
||
819 | else |
||
820 | { |
||
821 | ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode); |
||
822 | } |
||
823 | |||
824 | /* Push scope for Resource Templates */ |
||
825 | |||
826 | if (Op->Asl.ParseOpcode == PARSEOP_NAME) |
||
827 | { |
||
828 | if (Op->Asl.CompileFlags & NODE_IS_RESOURCE_DESC) |
||
829 | { |
||
830 | ForceNewScope = TRUE; |
||
831 | } |
||
832 | } |
||
833 | |||
834 | /* Push the scope stack */ |
||
835 | |||
836 | if (ForceNewScope || AcpiNsOpensScope (ObjectType)) |
||
837 | { |
||
838 | Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState); |
||
839 | if (ACPI_FAILURE (Status)) |
||
840 | { |
||
841 | return_ACPI_STATUS (Status); |
||
842 | } |
||
843 | } |
||
844 | |||
845 | if (Op->Asl.ParseOpcode == PARSEOP_ALIAS) |
||
846 | { |
||
847 | /* Complete the alias node by getting and saving the target node */ |
||
848 | |||
849 | /* First child is the alias target */ |
||
850 | |||
851 | Arg = Op->Asl.Child; |
||
852 | |||
853 | /* Get the target pathname */ |
||
854 | |||
855 | Path = Arg->Asl.Namepath; |
||
856 | if (!Path) |
||
857 | { |
||
858 | Status = UtInternalizeName (Arg->Asl.ExternalName, &Path); |
||
859 | if (ACPI_FAILURE (Status)) |
||
860 | { |
||
861 | return (Status); |
||
862 | } |
||
863 | } |
||
864 | |||
865 | /* Get the NS node associated with the target. It must exist. */ |
||
866 | |||
867 | Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ACPI_TYPE_ANY, |
||
868 | ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, |
||
869 | WalkState, &TargetNode); |
||
870 | if (ACPI_FAILURE (Status)) |
||
871 | { |
||
872 | if (Status == AE_NOT_FOUND) |
||
873 | { |
||
874 | AslError (ASL_ERROR, ASL_MSG_NOT_FOUND, Op, |
||
875 | Op->Asl.ExternalName); |
||
876 | |||
877 | /* |
||
878 | * The name was not found, go ahead and create it. |
||
879 | * This prevents more errors later. |
||
880 | */ |
||
881 | Status = AcpiNsLookup (WalkState->ScopeInfo, Path, |
||
882 | ACPI_TYPE_ANY, |
||
883 | ACPI_IMODE_LOAD_PASS1, ACPI_NS_NO_UPSEARCH, |
||
884 | WalkState, &(Node)); |
||
885 | return (AE_OK); |
||
886 | } |
||
887 | |||
888 | AslCoreSubsystemError (Op, Status, |
||
889 | "Failure from namespace lookup", FALSE); |
||
890 | return (AE_OK); |
||
891 | } |
||
892 | |||
893 | /* Save the target node within the alias node */ |
||
894 | |||
895 | Node->Object = ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, TargetNode); |
||
896 | } |
||
897 | |||
898 | return (AE_OK); |
||
899 | } |
||
900 | |||
901 | |||
902 | /******************************************************************************* |
||
903 | * |
||
904 | * FUNCTION: LdCommonNamespaceEnd |
||
905 | * |
||
906 | * PARAMETERS: ASL_WALK_CALLBACK |
||
907 | * |
||
908 | * RETURN: Status |
||
909 | * |
||
910 | * DESCRIPTION: Ascending callback used during the loading of the namespace, |
||
911 | * We only need to worry about managing the scope stack here. |
||
912 | * |
||
913 | ******************************************************************************/ |
||
914 | |||
915 | static ACPI_STATUS |
||
916 | LdCommonNamespaceEnd ( |
||
917 | ACPI_PARSE_OBJECT *Op, |
||
918 | UINT32 Level, |
||
919 | void *Context) |
||
920 | { |
||
921 | ACPI_WALK_STATE *WalkState = (ACPI_WALK_STATE *) Context; |
||
922 | ACPI_OBJECT_TYPE ObjectType; |
||
923 | BOOLEAN ForceNewScope = FALSE; |
||
924 | |||
925 | |||
926 | ACPI_FUNCTION_NAME (LdCommonNamespaceEnd); |
||
927 | |||
928 | |||
929 | /* We are only interested in opcodes that have an associated name */ |
||
930 | |||
931 | if (!Op->Asl.Namepath) |
||
932 | { |
||
933 | return (AE_OK); |
||
934 | } |
||
935 | |||
936 | /* Get the type to determine if we should pop the scope */ |
||
937 | |||
938 | if ((Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG) && |
||
939 | (Op->Asl.CompileFlags == NODE_IS_RESOURCE_DESC)) |
||
940 | { |
||
941 | /* TBD: Merge into AcpiDsMapNamedOpcodeToDataType */ |
||
942 | |||
943 | ObjectType = ACPI_TYPE_LOCAL_RESOURCE; |
||
944 | } |
||
945 | else |
||
946 | { |
||
947 | ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode); |
||
948 | } |
||
949 | |||
950 | /* Pop scope that was pushed for Resource Templates */ |
||
951 | |||
952 | if (Op->Asl.ParseOpcode == PARSEOP_NAME) |
||
953 | { |
||
954 | if (Op->Asl.CompileFlags & NODE_IS_RESOURCE_DESC) |
||
955 | { |
||
956 | ForceNewScope = TRUE; |
||
957 | } |
||
958 | } |
||
959 | |||
960 | /* Pop the scope stack */ |
||
961 | |||
962 | if (ForceNewScope || AcpiNsOpensScope (ObjectType)) |
||
963 | { |
||
964 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, |
||
965 | "(%s): Popping scope for Op [%s] %p\n", |
||
966 | AcpiUtGetTypeName (ObjectType), Op->Asl.ParseOpName, Op)); |
||
967 | |||
968 | (void) AcpiDsScopeStackPop (WalkState); |
||
969 | } |
||
970 | |||
971 | return (AE_OK); |
||
972 | }> |
||
973 |