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1498 | serge | 1 | /****************************************************************************** |
2 | * |
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3 | * Module Name: dswscope - Scope stack manipulation |
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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 __DSWSCOPE_C__ |
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117 | |||
118 | #include "acpi.h" |
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119 | #include "accommon.h" |
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120 | #include "acdispat.h" |
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121 | |||
122 | |||
123 | #define _COMPONENT ACPI_DISPATCHER |
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124 | ACPI_MODULE_NAME ("dswscope") |
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125 | |||
126 | |||
127 | /**************************************************************************** |
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128 | * |
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129 | * FUNCTION: AcpiDsScopeStackClear |
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130 | * |
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131 | * PARAMETERS: WalkState - Current state |
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132 | * |
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133 | * RETURN: None |
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134 | * |
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135 | * DESCRIPTION: Pop (and free) everything on the scope stack except the |
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136 | * root scope object (which remains at the stack top.) |
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137 | * |
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138 | ***************************************************************************/ |
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139 | |||
140 | void |
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141 | AcpiDsScopeStackClear ( |
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142 | ACPI_WALK_STATE *WalkState) |
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143 | { |
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144 | ACPI_GENERIC_STATE *ScopeInfo; |
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145 | |||
146 | ACPI_FUNCTION_NAME (DsScopeStackClear); |
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147 | |||
148 | |||
149 | while (WalkState->ScopeInfo) |
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150 | { |
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151 | /* Pop a scope off the stack */ |
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152 | |||
153 | ScopeInfo = WalkState->ScopeInfo; |
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154 | WalkState->ScopeInfo = ScopeInfo->Scope.Next; |
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155 | |||
156 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, |
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157 | "Popped object type (%s)\n", |
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158 | AcpiUtGetTypeName (ScopeInfo->Common.Value))); |
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159 | AcpiUtDeleteGenericState (ScopeInfo); |
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160 | } |
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161 | } |
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162 | |||
163 | |||
164 | /**************************************************************************** |
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165 | * |
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166 | * FUNCTION: AcpiDsScopeStackPush |
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167 | * |
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168 | * PARAMETERS: Node - Name to be made current |
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169 | * Type - Type of frame being pushed |
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170 | * WalkState - Current state |
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171 | * |
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172 | * RETURN: Status |
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173 | * |
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174 | * DESCRIPTION: Push the current scope on the scope stack, and make the |
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175 | * passed Node current. |
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176 | * |
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177 | ***************************************************************************/ |
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178 | |||
179 | ACPI_STATUS |
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180 | AcpiDsScopeStackPush ( |
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181 | ACPI_NAMESPACE_NODE *Node, |
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182 | ACPI_OBJECT_TYPE Type, |
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183 | ACPI_WALK_STATE *WalkState) |
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184 | { |
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185 | ACPI_GENERIC_STATE *ScopeInfo; |
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186 | ACPI_GENERIC_STATE *OldScopeInfo; |
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187 | |||
188 | |||
189 | ACPI_FUNCTION_TRACE (DsScopeStackPush); |
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190 | |||
191 | |||
192 | if (!Node) |
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193 | { |
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194 | /* Invalid scope */ |
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195 | |||
196 | ACPI_ERROR ((AE_INFO, "Null scope parameter")); |
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197 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
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198 | } |
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199 | |||
200 | /* Make sure object type is valid */ |
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201 | |||
202 | if (!AcpiUtValidObjectType (Type)) |
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203 | { |
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204 | ACPI_WARNING ((AE_INFO, |
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205 | "Invalid object type: 0x%X", Type)); |
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206 | } |
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207 | |||
208 | /* Allocate a new scope object */ |
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209 | |||
210 | ScopeInfo = AcpiUtCreateGenericState (); |
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211 | if (!ScopeInfo) |
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212 | { |
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213 | return_ACPI_STATUS (AE_NO_MEMORY); |
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214 | } |
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215 | |||
216 | /* Init new scope object */ |
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217 | |||
218 | ScopeInfo->Common.DescriptorType = ACPI_DESC_TYPE_STATE_WSCOPE; |
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219 | ScopeInfo->Scope.Node = Node; |
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220 | ScopeInfo->Common.Value = (UINT16) Type; |
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221 | |||
222 | WalkState->ScopeDepth++; |
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223 | |||
224 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, |
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225 | "[%.2d] Pushed scope ", (UINT32) WalkState->ScopeDepth)); |
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226 | |||
227 | OldScopeInfo = WalkState->ScopeInfo; |
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228 | if (OldScopeInfo) |
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229 | { |
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230 | ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC, |
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231 | "[%4.4s] (%s)", |
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232 | AcpiUtGetNodeName (OldScopeInfo->Scope.Node), |
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233 | AcpiUtGetTypeName (OldScopeInfo->Common.Value))); |
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234 | } |
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235 | else |
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236 | { |
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237 | ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC, |
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238 | "[\\___] (%s)", "ROOT")); |
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239 | } |
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240 | |||
241 | ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC, |
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242 | ", New scope -> [%4.4s] (%s)\n", |
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243 | AcpiUtGetNodeName (ScopeInfo->Scope.Node), |
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244 | AcpiUtGetTypeName (ScopeInfo->Common.Value))); |
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245 | |||
246 | /* Push new scope object onto stack */ |
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247 | |||
248 | AcpiUtPushGenericState (&WalkState->ScopeInfo, ScopeInfo); |
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249 | return_ACPI_STATUS (AE_OK); |
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250 | } |
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251 | |||
252 | |||
253 | /**************************************************************************** |
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254 | * |
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255 | * FUNCTION: AcpiDsScopeStackPop |
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256 | * |
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257 | * PARAMETERS: WalkState - Current state |
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258 | * |
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259 | * RETURN: Status |
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260 | * |
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261 | * DESCRIPTION: Pop the scope stack once. |
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262 | * |
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263 | ***************************************************************************/ |
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264 | |||
265 | ACPI_STATUS |
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266 | AcpiDsScopeStackPop ( |
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267 | ACPI_WALK_STATE *WalkState) |
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268 | { |
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269 | ACPI_GENERIC_STATE *ScopeInfo; |
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270 | ACPI_GENERIC_STATE *NewScopeInfo; |
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271 | |||
272 | |||
273 | ACPI_FUNCTION_TRACE (DsScopeStackPop); |
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274 | |||
275 | |||
276 | /* |
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277 | * Pop scope info object off the stack. |
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278 | */ |
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279 | ScopeInfo = AcpiUtPopGenericState (&WalkState->ScopeInfo); |
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280 | if (!ScopeInfo) |
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281 | { |
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282 | return_ACPI_STATUS (AE_STACK_UNDERFLOW); |
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283 | } |
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284 | |||
285 | WalkState->ScopeDepth--; |
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286 | |||
287 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, |
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288 | "[%.2d] Popped scope [%4.4s] (%s), New scope -> ", |
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289 | (UINT32) WalkState->ScopeDepth, |
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290 | AcpiUtGetNodeName (ScopeInfo->Scope.Node), |
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291 | AcpiUtGetTypeName (ScopeInfo->Common.Value))); |
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292 | |||
293 | NewScopeInfo = WalkState->ScopeInfo; |
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294 | if (NewScopeInfo) |
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295 | { |
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296 | ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC, |
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297 | "[%4.4s] (%s)\n", |
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298 | AcpiUtGetNodeName (NewScopeInfo->Scope.Node), |
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299 | AcpiUtGetTypeName (NewScopeInfo->Common.Value))); |
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300 | } |
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301 | else |
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302 | { |
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303 | ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC, |
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304 | "[\\___] (ROOT)\n")); |
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305 | } |
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306 | |||
307 | AcpiUtDeleteGenericState (ScopeInfo); |
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308 | return_ACPI_STATUS (AE_OK); |
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309 | } |
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310 |