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1498 | serge | 1 | /****************************************************************************** |
2 | * |
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3 | * Module Name: uteval - Object evaluation |
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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 __UTEVAL_C__ |
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117 | |||
118 | #include "acpi.h" |
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119 | #include "accommon.h" |
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120 | #include "acnamesp.h" |
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121 | |||
122 | |||
123 | #define _COMPONENT ACPI_UTILITIES |
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124 | ACPI_MODULE_NAME ("uteval") |
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125 | |||
126 | |||
127 | /******************************************************************************* |
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128 | * |
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129 | * FUNCTION: AcpiUtEvaluateObject |
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130 | * |
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131 | * PARAMETERS: PrefixNode - Starting node |
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132 | * Path - Path to object from starting node |
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133 | * ExpectedReturnTypes - Bitmap of allowed return types |
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134 | * ReturnDesc - Where a return value is stored |
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135 | * |
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136 | * RETURN: Status |
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137 | * |
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138 | * DESCRIPTION: Evaluates a namespace object and verifies the type of the |
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139 | * return object. Common code that simplifies accessing objects |
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140 | * that have required return objects of fixed types. |
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141 | * |
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142 | * NOTE: Internal function, no parameter validation |
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143 | * |
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144 | ******************************************************************************/ |
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145 | |||
146 | ACPI_STATUS |
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147 | AcpiUtEvaluateObject ( |
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148 | ACPI_NAMESPACE_NODE *PrefixNode, |
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149 | char *Path, |
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150 | UINT32 ExpectedReturnBtypes, |
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151 | ACPI_OPERAND_OBJECT **ReturnDesc) |
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152 | { |
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153 | ACPI_EVALUATE_INFO *Info; |
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154 | ACPI_STATUS Status; |
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155 | UINT32 ReturnBtype; |
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156 | |||
157 | |||
158 | ACPI_FUNCTION_TRACE (UtEvaluateObject); |
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159 | |||
160 | |||
161 | /* Allocate the evaluation information block */ |
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162 | |||
163 | Info = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EVALUATE_INFO)); |
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164 | if (!Info) |
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165 | { |
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166 | return_ACPI_STATUS (AE_NO_MEMORY); |
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167 | } |
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168 | |||
169 | Info->PrefixNode = PrefixNode; |
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170 | Info->Pathname = Path; |
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171 | |||
172 | /* Evaluate the object/method */ |
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173 | |||
174 | Status = AcpiNsEvaluate (Info); |
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175 | if (ACPI_FAILURE (Status)) |
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176 | { |
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177 | if (Status == AE_NOT_FOUND) |
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178 | { |
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179 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s.%s] was not found\n", |
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180 | AcpiUtGetNodeName (PrefixNode), Path)); |
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181 | } |
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182 | else |
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183 | { |
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184 | ACPI_ERROR_METHOD ("Method execution failed", |
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185 | PrefixNode, Path, Status); |
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186 | } |
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187 | |||
188 | goto Cleanup; |
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189 | } |
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190 | |||
191 | /* Did we get a return object? */ |
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192 | |||
193 | if (!Info->ReturnObject) |
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194 | { |
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195 | if (ExpectedReturnBtypes) |
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196 | { |
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197 | ACPI_ERROR_METHOD ("No object was returned from", |
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198 | PrefixNode, Path, AE_NOT_EXIST); |
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199 | |||
200 | Status = AE_NOT_EXIST; |
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201 | } |
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202 | |||
203 | goto Cleanup; |
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204 | } |
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205 | |||
206 | /* Map the return object type to the bitmapped type */ |
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207 | |||
208 | switch ((Info->ReturnObject)->Common.Type) |
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209 | { |
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210 | case ACPI_TYPE_INTEGER: |
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211 | ReturnBtype = ACPI_BTYPE_INTEGER; |
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212 | break; |
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213 | |||
214 | case ACPI_TYPE_BUFFER: |
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215 | ReturnBtype = ACPI_BTYPE_BUFFER; |
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216 | break; |
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217 | |||
218 | case ACPI_TYPE_STRING: |
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219 | ReturnBtype = ACPI_BTYPE_STRING; |
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220 | break; |
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221 | |||
222 | case ACPI_TYPE_PACKAGE: |
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223 | ReturnBtype = ACPI_BTYPE_PACKAGE; |
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224 | break; |
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225 | |||
226 | default: |
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227 | ReturnBtype = 0; |
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228 | break; |
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229 | } |
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230 | |||
231 | if ((AcpiGbl_EnableInterpreterSlack) && |
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232 | (!ExpectedReturnBtypes)) |
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233 | { |
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234 | /* |
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235 | * We received a return object, but one was not expected. This can |
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236 | * happen frequently if the "implicit return" feature is enabled. |
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237 | * Just delete the return object and return AE_OK. |
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238 | */ |
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239 | AcpiUtRemoveReference (Info->ReturnObject); |
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240 | goto Cleanup; |
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241 | } |
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242 | |||
243 | /* Is the return object one of the expected types? */ |
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244 | |||
245 | if (!(ExpectedReturnBtypes & ReturnBtype)) |
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246 | { |
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247 | ACPI_ERROR_METHOD ("Return object type is incorrect", |
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248 | PrefixNode, Path, AE_TYPE); |
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249 | |||
250 | ACPI_ERROR ((AE_INFO, |
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251 | "Type returned from %s was incorrect: %s, expected Btypes: 0x%X", |
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252 | Path, AcpiUtGetObjectTypeName (Info->ReturnObject), |
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253 | ExpectedReturnBtypes)); |
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254 | |||
255 | /* On error exit, we must delete the return object */ |
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256 | |||
257 | AcpiUtRemoveReference (Info->ReturnObject); |
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258 | Status = AE_TYPE; |
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259 | goto Cleanup; |
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260 | } |
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261 | |||
262 | /* Object type is OK, return it */ |
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263 | |||
264 | *ReturnDesc = Info->ReturnObject; |
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265 | |||
266 | Cleanup: |
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267 | ACPI_FREE (Info); |
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268 | return_ACPI_STATUS (Status); |
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269 | } |
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270 | |||
271 | |||
272 | /******************************************************************************* |
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273 | * |
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274 | * FUNCTION: AcpiUtEvaluateNumericObject |
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275 | * |
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276 | * PARAMETERS: ObjectName - Object name to be evaluated |
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277 | * DeviceNode - Node for the device |
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278 | * Value - Where the value is returned |
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279 | * |
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280 | * RETURN: Status |
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281 | * |
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282 | * DESCRIPTION: Evaluates a numeric namespace object for a selected device |
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283 | * and stores result in *Value. |
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284 | * |
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285 | * NOTE: Internal function, no parameter validation |
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286 | * |
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287 | ******************************************************************************/ |
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288 | |||
289 | ACPI_STATUS |
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290 | AcpiUtEvaluateNumericObject ( |
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291 | char *ObjectName, |
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292 | ACPI_NAMESPACE_NODE *DeviceNode, |
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293 | UINT64 *Value) |
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294 | { |
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295 | ACPI_OPERAND_OBJECT *ObjDesc; |
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296 | ACPI_STATUS Status; |
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297 | |||
298 | |||
299 | ACPI_FUNCTION_TRACE (UtEvaluateNumericObject); |
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300 | |||
301 | |||
302 | Status = AcpiUtEvaluateObject (DeviceNode, ObjectName, |
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303 | ACPI_BTYPE_INTEGER, &ObjDesc); |
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304 | if (ACPI_FAILURE (Status)) |
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305 | { |
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306 | return_ACPI_STATUS (Status); |
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307 | } |
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308 | |||
309 | /* Get the returned Integer */ |
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310 | |||
311 | *Value = ObjDesc->Integer.Value; |
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312 | |||
313 | /* On exit, we must delete the return object */ |
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314 | |||
315 | AcpiUtRemoveReference (ObjDesc); |
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316 | return_ACPI_STATUS (Status); |
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317 | } |
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318 | |||
319 | |||
320 | /******************************************************************************* |
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321 | * |
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322 | * FUNCTION: AcpiUtExecute_STA |
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323 | * |
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324 | * PARAMETERS: DeviceNode - Node for the device |
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325 | * Flags - Where the status flags are returned |
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326 | * |
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327 | * RETURN: Status |
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328 | * |
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329 | * DESCRIPTION: Executes _STA for selected device and stores results in |
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330 | * *Flags. |
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331 | * |
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332 | * NOTE: Internal function, no parameter validation |
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333 | * |
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334 | ******************************************************************************/ |
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335 | |||
336 | ACPI_STATUS |
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337 | AcpiUtExecute_STA ( |
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338 | ACPI_NAMESPACE_NODE *DeviceNode, |
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339 | UINT32 *Flags) |
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340 | { |
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341 | ACPI_OPERAND_OBJECT *ObjDesc; |
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342 | ACPI_STATUS Status; |
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343 | |||
344 | |||
345 | ACPI_FUNCTION_TRACE (UtExecute_STA); |
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346 | |||
347 | |||
348 | Status = AcpiUtEvaluateObject (DeviceNode, METHOD_NAME__STA, |
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349 | ACPI_BTYPE_INTEGER, &ObjDesc); |
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350 | if (ACPI_FAILURE (Status)) |
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351 | { |
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352 | if (AE_NOT_FOUND == Status) |
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353 | { |
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354 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, |
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355 | "_STA on %4.4s was not found, assuming device is present\n", |
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356 | AcpiUtGetNodeName (DeviceNode))); |
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357 | |||
358 | *Flags = ACPI_UINT32_MAX; |
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359 | Status = AE_OK; |
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360 | } |
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361 | |||
362 | return_ACPI_STATUS (Status); |
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363 | } |
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364 | |||
365 | /* Extract the status flags */ |
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366 | |||
367 | *Flags = (UINT32) ObjDesc->Integer.Value; |
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368 | |||
369 | /* On exit, we must delete the return object */ |
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370 | |||
371 | AcpiUtRemoveReference (ObjDesc); |
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372 | return_ACPI_STATUS (Status); |
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373 | } |
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374 | |||
375 | |||
376 | /******************************************************************************* |
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377 | * |
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378 | * FUNCTION: AcpiUtExecutePowerMethods |
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379 | * |
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380 | * PARAMETERS: DeviceNode - Node for the device |
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381 | * MethodNames - Array of power method names |
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382 | * MethodCount - Number of methods to execute |
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383 | * OutValues - Where the power method values are returned |
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384 | * |
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385 | * RETURN: Status, OutValues |
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386 | * |
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387 | * DESCRIPTION: Executes the specified power methods for the device and returns |
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388 | * the result(s). |
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389 | * |
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390 | * NOTE: Internal function, no parameter validation |
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391 | * |
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392 | ******************************************************************************/ |
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393 | |||
394 | ACPI_STATUS |
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395 | AcpiUtExecutePowerMethods ( |
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396 | ACPI_NAMESPACE_NODE *DeviceNode, |
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397 | const char **MethodNames, |
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398 | UINT8 MethodCount, |
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399 | UINT8 *OutValues) |
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400 | { |
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401 | ACPI_OPERAND_OBJECT *ObjDesc; |
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402 | ACPI_STATUS Status; |
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403 | ACPI_STATUS FinalStatus = AE_NOT_FOUND; |
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404 | UINT32 i; |
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405 | |||
406 | |||
407 | ACPI_FUNCTION_TRACE (UtExecutePowerMethods); |
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408 | |||
409 | |||
410 | for (i = 0; i < MethodCount; i++) |
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411 | { |
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412 | /* |
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413 | * Execute the power method (_SxD or _SxW). The only allowable |
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414 | * return type is an Integer. |
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415 | */ |
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416 | Status = AcpiUtEvaluateObject (DeviceNode, |
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417 | ACPI_CAST_PTR (char, MethodNames[i]), |
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418 | ACPI_BTYPE_INTEGER, &ObjDesc); |
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419 | if (ACPI_SUCCESS (Status)) |
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420 | { |
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421 | OutValues[i] = (UINT8) ObjDesc->Integer.Value; |
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422 | |||
423 | /* Delete the return object */ |
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424 | |||
425 | AcpiUtRemoveReference (ObjDesc); |
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426 | FinalStatus = AE_OK; /* At least one value is valid */ |
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427 | continue; |
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428 | } |
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429 | |||
430 | OutValues[i] = ACPI_UINT8_MAX; |
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431 | if (Status == AE_NOT_FOUND) |
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432 | { |
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433 | continue; /* Ignore if not found */ |
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434 | } |
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435 | |||
436 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Failed %s on Device %4.4s, %s\n", |
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437 | ACPI_CAST_PTR (char, MethodNames[i]), |
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438 | AcpiUtGetNodeName (DeviceNode), AcpiFormatException (Status))); |
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439 | } |
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440 | |||
441 | return_ACPI_STATUS (FinalStatus); |
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442 | }> |