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Rev | Author | Line No. | Line |
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1498 | serge | 1 | /******************************************************************************* |
2 | * |
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3 | * Module Name: nsxfobj - Public interfaces to the ACPI subsystem |
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4 | * ACPI Object oriented interfaces |
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5 | * |
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6 | ******************************************************************************/ |
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7 | |||
8 | /****************************************************************************** |
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9 | * |
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10 | * 1. Copyright Notice |
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11 | * |
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2216 | Serge | 12 | * Some or all of this work - Copyright (c) 1999 - 2011, Intel Corp. |
1498 | serge | 13 | * All rights reserved. |
14 | * |
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15 | * 2. License |
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16 | * |
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17 | * 2.1. This is your license from Intel Corp. under its intellectual property |
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18 | * rights. You may have additional license terms from the party that provided |
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19 | * you this software, covering your right to use that party's intellectual |
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20 | * property rights. |
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21 | * |
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22 | * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a |
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23 | * copy of the source code appearing in this file ("Covered Code") an |
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24 | * irrevocable, perpetual, worldwide license under Intel's copyrights in the |
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25 | * base code distributed originally by Intel ("Original Intel Code") to copy, |
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26 | * make derivatives, distribute, use and display any portion of the Covered |
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27 | * Code in any form, with the right to sublicense such rights; and |
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28 | * |
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29 | * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent |
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30 | * license (with the right to sublicense), under only those claims of Intel |
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31 | * patents that are infringed by the Original Intel Code, to make, use, sell, |
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32 | * offer to sell, and import the Covered Code and derivative works thereof |
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33 | * solely to the minimum extent necessary to exercise the above copyright |
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34 | * license, and in no event shall the patent license extend to any additions |
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35 | * to or modifications of the Original Intel Code. No other license or right |
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36 | * is granted directly or by implication, estoppel or otherwise; |
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37 | * |
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38 | * The above copyright and patent license is granted only if the following |
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39 | * conditions are met: |
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40 | * |
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41 | * 3. Conditions |
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42 | * |
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43 | * 3.1. Redistribution of Source with Rights to Further Distribute Source. |
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44 | * Redistribution of source code of any substantial portion of the Covered |
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45 | * Code or modification with rights to further distribute source must include |
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46 | * the above Copyright Notice, the above License, this list of Conditions, |
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47 | * and the following Disclaimer and Export Compliance provision. In addition, |
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48 | * Licensee must cause all Covered Code to which Licensee contributes to |
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49 | * contain a file documenting the changes Licensee made to create that Covered |
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50 | * Code and the date of any change. Licensee must include in that file the |
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51 | * documentation of any changes made by any predecessor Licensee. Licensee |
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52 | * must include a prominent statement that the modification is derived, |
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53 | * directly or indirectly, from Original Intel Code. |
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54 | * |
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55 | * 3.2. Redistribution of Source with no Rights to Further Distribute Source. |
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56 | * Redistribution of source code of any substantial portion of the Covered |
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57 | * Code or modification without rights to further distribute source must |
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58 | * include the following Disclaimer and Export Compliance provision in the |
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59 | * documentation and/or other materials provided with distribution. In |
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60 | * addition, Licensee may not authorize further sublicense of source of any |
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61 | * portion of the Covered Code, and must include terms to the effect that the |
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62 | * license from Licensee to its licensee is limited to the intellectual |
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63 | * property embodied in the software Licensee provides to its licensee, and |
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64 | * not to intellectual property embodied in modifications its licensee may |
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65 | * make. |
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66 | * |
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67 | * 3.3. Redistribution of Executable. Redistribution in executable form of any |
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68 | * substantial portion of the Covered Code or modification must reproduce the |
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69 | * above Copyright Notice, and the following Disclaimer and Export Compliance |
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70 | * provision in the documentation and/or other materials provided with the |
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71 | * distribution. |
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72 | * |
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73 | * 3.4. Intel retains all right, title, and interest in and to the Original |
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74 | * Intel Code. |
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75 | * |
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76 | * 3.5. Neither the name Intel nor any other trademark owned or controlled by |
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77 | * Intel shall be used in advertising or otherwise to promote the sale, use or |
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78 | * other dealings in products derived from or relating to the Covered Code |
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79 | * without prior written authorization from Intel. |
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80 | * |
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81 | * 4. Disclaimer and Export Compliance |
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82 | * |
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83 | * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED |
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84 | * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE |
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85 | * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, |
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86 | * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY |
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87 | * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY |
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88 | * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A |
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89 | * PARTICULAR PURPOSE. |
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90 | * |
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91 | * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES |
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92 | * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR |
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93 | * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, |
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94 | * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY |
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95 | * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL |
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96 | * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS |
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97 | * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY |
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98 | * LIMITED REMEDY. |
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99 | * |
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100 | * 4.3. Licensee shall not export, either directly or indirectly, any of this |
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101 | * software or system incorporating such software without first obtaining any |
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102 | * required license or other approval from the U. S. Department of Commerce or |
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103 | * any other agency or department of the United States Government. In the |
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104 | * event Licensee exports any such software from the United States or |
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105 | * re-exports any such software from a foreign destination, Licensee shall |
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106 | * ensure that the distribution and export/re-export of the software is in |
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107 | * compliance with all laws, regulations, orders, or other restrictions of the |
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108 | * U.S. Export Administration Regulations. Licensee agrees that neither it nor |
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109 | * any of its subsidiaries will export/re-export any technical data, process, |
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110 | * software, or service, directly or indirectly, to any country for which the |
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111 | * United States government or any agency thereof requires an export license, |
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112 | * other governmental approval, or letter of assurance, without first obtaining |
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113 | * such license, approval or letter. |
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114 | * |
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115 | *****************************************************************************/ |
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116 | |||
117 | |||
118 | #define __NSXFOBJ_C__ |
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119 | |||
120 | #include "acpi.h" |
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121 | #include "accommon.h" |
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122 | #include "acnamesp.h" |
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123 | |||
124 | |||
125 | #define _COMPONENT ACPI_NAMESPACE |
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126 | ACPI_MODULE_NAME ("nsxfobj") |
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127 | |||
128 | /******************************************************************************* |
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129 | * |
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130 | * FUNCTION: AcpiGetType |
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131 | * |
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132 | * PARAMETERS: Handle - Handle of object whose type is desired |
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133 | * RetType - Where the type will be placed |
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134 | * |
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135 | * RETURN: Status |
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136 | * |
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137 | * DESCRIPTION: This routine returns the type associatd with a particular handle |
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138 | * |
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139 | ******************************************************************************/ |
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140 | |||
141 | ACPI_STATUS |
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142 | AcpiGetType ( |
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143 | ACPI_HANDLE Handle, |
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144 | ACPI_OBJECT_TYPE *RetType) |
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145 | { |
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146 | ACPI_NAMESPACE_NODE *Node; |
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147 | ACPI_STATUS Status; |
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148 | |||
149 | |||
150 | /* Parameter Validation */ |
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151 | |||
152 | if (!RetType) |
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153 | { |
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154 | return (AE_BAD_PARAMETER); |
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155 | } |
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156 | |||
157 | /* |
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158 | * Special case for the predefined Root Node |
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159 | * (return type ANY) |
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160 | */ |
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161 | if (Handle == ACPI_ROOT_OBJECT) |
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162 | { |
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163 | *RetType = ACPI_TYPE_ANY; |
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164 | return (AE_OK); |
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165 | } |
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166 | |||
167 | Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); |
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168 | if (ACPI_FAILURE (Status)) |
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169 | { |
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170 | return (Status); |
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171 | } |
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172 | |||
173 | /* Convert and validate the handle */ |
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174 | |||
175 | Node = AcpiNsValidateHandle (Handle); |
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176 | if (!Node) |
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177 | { |
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178 | (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); |
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179 | return (AE_BAD_PARAMETER); |
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180 | } |
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181 | |||
182 | *RetType = Node->Type; |
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183 | |||
184 | |||
185 | Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); |
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186 | return (Status); |
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187 | } |
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188 | |||
189 | ACPI_EXPORT_SYMBOL (AcpiGetType) |
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190 | |||
191 | |||
192 | /******************************************************************************* |
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193 | * |
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194 | * FUNCTION: AcpiGetParent |
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195 | * |
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196 | * PARAMETERS: Handle - Handle of object whose parent is desired |
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197 | * RetHandle - Where the parent handle will be placed |
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198 | * |
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199 | * RETURN: Status |
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200 | * |
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201 | * DESCRIPTION: Returns a handle to the parent of the object represented by |
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202 | * Handle. |
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203 | * |
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204 | ******************************************************************************/ |
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205 | |||
206 | ACPI_STATUS |
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207 | AcpiGetParent ( |
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208 | ACPI_HANDLE Handle, |
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209 | ACPI_HANDLE *RetHandle) |
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210 | { |
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211 | ACPI_NAMESPACE_NODE *Node; |
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212 | ACPI_NAMESPACE_NODE *ParentNode; |
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213 | ACPI_STATUS Status; |
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214 | |||
215 | |||
216 | if (!RetHandle) |
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217 | { |
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218 | return (AE_BAD_PARAMETER); |
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219 | } |
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220 | |||
221 | /* Special case for the predefined Root Node (no parent) */ |
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222 | |||
223 | if (Handle == ACPI_ROOT_OBJECT) |
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224 | { |
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225 | return (AE_NULL_ENTRY); |
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226 | } |
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227 | |||
228 | Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); |
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229 | if (ACPI_FAILURE (Status)) |
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230 | { |
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231 | return (Status); |
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232 | } |
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233 | |||
234 | /* Convert and validate the handle */ |
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235 | |||
236 | Node = AcpiNsValidateHandle (Handle); |
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237 | if (!Node) |
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238 | { |
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239 | Status = AE_BAD_PARAMETER; |
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240 | goto UnlockAndExit; |
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241 | } |
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242 | |||
243 | /* Get the parent entry */ |
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244 | |||
245 | ParentNode = Node->Parent; |
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246 | *RetHandle = ACPI_CAST_PTR (ACPI_HANDLE, ParentNode); |
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247 | |||
248 | /* Return exception if parent is null */ |
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249 | |||
250 | if (!ParentNode) |
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251 | { |
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252 | Status = AE_NULL_ENTRY; |
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253 | } |
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254 | |||
255 | |||
256 | UnlockAndExit: |
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257 | |||
258 | (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); |
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259 | return (Status); |
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260 | } |
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261 | |||
262 | ACPI_EXPORT_SYMBOL (AcpiGetParent) |
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263 | |||
264 | |||
265 | /******************************************************************************* |
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266 | * |
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267 | * FUNCTION: AcpiGetNextObject |
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268 | * |
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269 | * PARAMETERS: Type - Type of object to be searched for |
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270 | * Parent - Parent object whose children we are getting |
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271 | * LastChild - Previous child that was found. |
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272 | * The NEXT child will be returned |
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273 | * RetHandle - Where handle to the next object is placed |
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274 | * |
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275 | * RETURN: Status |
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276 | * |
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277 | * DESCRIPTION: Return the next peer object within the namespace. If Handle is |
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278 | * valid, Scope is ignored. Otherwise, the first object within |
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279 | * Scope is returned. |
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280 | * |
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281 | ******************************************************************************/ |
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282 | |||
283 | ACPI_STATUS |
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284 | AcpiGetNextObject ( |
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285 | ACPI_OBJECT_TYPE Type, |
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286 | ACPI_HANDLE Parent, |
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287 | ACPI_HANDLE Child, |
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288 | ACPI_HANDLE *RetHandle) |
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289 | { |
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290 | ACPI_STATUS Status; |
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291 | ACPI_NAMESPACE_NODE *Node; |
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292 | ACPI_NAMESPACE_NODE *ParentNode = NULL; |
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293 | ACPI_NAMESPACE_NODE *ChildNode = NULL; |
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294 | |||
295 | |||
296 | /* Parameter validation */ |
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297 | |||
298 | if (Type > ACPI_TYPE_EXTERNAL_MAX) |
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299 | { |
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300 | return (AE_BAD_PARAMETER); |
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301 | } |
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302 | |||
303 | Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); |
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304 | if (ACPI_FAILURE (Status)) |
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305 | { |
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306 | return (Status); |
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307 | } |
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308 | |||
309 | /* If null handle, use the parent */ |
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310 | |||
311 | if (!Child) |
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312 | { |
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313 | /* Start search at the beginning of the specified scope */ |
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314 | |||
315 | ParentNode = AcpiNsValidateHandle (Parent); |
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316 | if (!ParentNode) |
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317 | { |
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318 | Status = AE_BAD_PARAMETER; |
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319 | goto UnlockAndExit; |
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320 | } |
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321 | } |
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322 | else |
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323 | { |
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324 | /* Non-null handle, ignore the parent */ |
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325 | /* Convert and validate the handle */ |
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326 | |||
327 | ChildNode = AcpiNsValidateHandle (Child); |
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328 | if (!ChildNode) |
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329 | { |
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330 | Status = AE_BAD_PARAMETER; |
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331 | goto UnlockAndExit; |
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332 | } |
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333 | } |
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334 | |||
335 | /* Internal function does the real work */ |
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336 | |||
337 | Node = AcpiNsGetNextNodeTyped (Type, ParentNode, ChildNode); |
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338 | if (!Node) |
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339 | { |
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340 | Status = AE_NOT_FOUND; |
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341 | goto UnlockAndExit; |
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342 | } |
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343 | |||
344 | if (RetHandle) |
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345 | { |
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346 | *RetHandle = ACPI_CAST_PTR (ACPI_HANDLE, Node); |
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347 | } |
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348 | |||
349 | |||
350 | UnlockAndExit: |
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351 | |||
352 | (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); |
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353 | return (Status); |
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354 | } |
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355 | |||
356 | ACPI_EXPORT_SYMBOL (AcpiGetNextObject) |
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357 |