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1498 | serge | 1 | |
2 | * |
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3 | * Module Name: exutils - interpreter/scanner utilities |
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4 | * |
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5 | *****************************************************************************/ |
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6 | |||
7 | |||
8 | * |
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9 | * 1. Copyright Notice |
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10 | * |
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11 | * Some or all of this work - Copyright (c) 1999 - 2011, Intel Corp. |
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2216 | Serge | 12 | * All rights reserved. |
1498 | serge | 13 | * |
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 | |||
117 | |||
118 | |||
119 | * DEFINE_AML_GLOBALS is tested in amlcode.h |
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120 | * to determine whether certain global names should be "defined" or only |
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121 | * "declared" in the current compilation. This enhances maintainability |
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122 | * by enabling a single header file to embody all knowledge of the names |
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123 | * in question. |
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124 | * |
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125 | * Exactly one module of any executable should #define DEFINE_GLOBALS |
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126 | * before #including the header files which use this convention. The |
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127 | * names in question will be defined and initialized in that module, |
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128 | * and declared as extern in all other modules which #include those |
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129 | * header files. |
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130 | */ |
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131 | |||
132 | |||
133 | |||
134 | |||
135 | #include "accommon.h" |
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136 | #include "acinterp.h" |
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137 | #include "amlcode.h" |
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138 | |||
139 | |||
140 | ACPI_MODULE_NAME ("exutils") |
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141 | |||
142 | |||
143 | |||
144 | |||
145 | AcpiExDigitsNeeded ( |
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146 | UINT64 Value, |
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147 | UINT32 Base); |
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148 | |||
149 | |||
150 | |||
151 | /******************************************************************************* |
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152 | * |
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153 | * FUNCTION: AcpiExEnterInterpreter |
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154 | * |
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155 | * PARAMETERS: None |
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156 | * |
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157 | * RETURN: None |
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158 | * |
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159 | * DESCRIPTION: Enter the interpreter execution region. Failure to enter |
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160 | * the interpreter region is a fatal system error. Used in |
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161 | * conjunction with ExitInterpreter. |
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162 | * |
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163 | ******************************************************************************/ |
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164 | |||
165 | |||
166 | AcpiExEnterInterpreter ( |
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167 | void) |
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168 | { |
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169 | ACPI_STATUS Status; |
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170 | |||
171 | |||
172 | |||
173 | |||
174 | |||
175 | |||
176 | if (ACPI_FAILURE (Status)) |
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177 | { |
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178 | ACPI_ERROR ((AE_INFO, "Could not acquire AML Interpreter mutex")); |
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179 | } |
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180 | |||
181 | |||
182 | } |
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183 | |||
184 | |||
185 | |||
186 | * |
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187 | * FUNCTION: AcpiExReacquireInterpreter |
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188 | * |
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189 | * PARAMETERS: None |
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190 | * |
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191 | * RETURN: None |
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192 | * |
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193 | * DESCRIPTION: Reacquire the interpreter execution region from within the |
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194 | * interpreter code. Failure to enter the interpreter region is a |
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195 | * fatal system error. Used in conjuction with |
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196 | * RelinquishInterpreter |
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197 | * |
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198 | ******************************************************************************/ |
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199 | |||
200 | |||
201 | AcpiExReacquireInterpreter ( |
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202 | void) |
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203 | { |
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204 | ACPI_FUNCTION_TRACE (ExReacquireInterpreter); |
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205 | |||
206 | |||
207 | |||
208 | * If the global serialized flag is set, do not release the interpreter, |
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209 | * since it was not actually released by AcpiExRelinquishInterpreter. |
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210 | * This forces the interpreter to be single threaded. |
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211 | */ |
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212 | if (!AcpiGbl_AllMethodsSerialized) |
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213 | { |
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214 | AcpiExEnterInterpreter (); |
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215 | } |
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216 | |||
217 | |||
218 | } |
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219 | |||
220 | |||
221 | |||
222 | * |
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223 | * FUNCTION: AcpiExExitInterpreter |
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224 | * |
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225 | * PARAMETERS: None |
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226 | * |
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227 | * RETURN: None |
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228 | * |
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229 | * DESCRIPTION: Exit the interpreter execution region. This is the top level |
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230 | * routine used to exit the interpreter when all processing has |
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231 | * been completed. |
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232 | * |
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233 | ******************************************************************************/ |
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234 | |||
235 | |||
236 | AcpiExExitInterpreter ( |
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237 | void) |
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238 | { |
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239 | ACPI_STATUS Status; |
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240 | |||
241 | |||
242 | |||
243 | |||
244 | |||
245 | |||
246 | if (ACPI_FAILURE (Status)) |
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247 | { |
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248 | ACPI_ERROR ((AE_INFO, "Could not release AML Interpreter mutex")); |
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249 | } |
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250 | |||
251 | |||
252 | } |
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253 | |||
254 | |||
255 | |||
256 | * |
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257 | * FUNCTION: AcpiExRelinquishInterpreter |
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258 | * |
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259 | * PARAMETERS: None |
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260 | * |
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261 | * RETURN: None |
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262 | * |
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263 | * DESCRIPTION: Exit the interpreter execution region, from within the |
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264 | * interpreter - before attempting an operation that will possibly |
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265 | * block the running thread. |
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266 | * |
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267 | * Cases where the interpreter is unlocked internally |
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268 | * 1) Method to be blocked on a Sleep() AML opcode |
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269 | * 2) Method to be blocked on an Acquire() AML opcode |
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270 | * 3) Method to be blocked on a Wait() AML opcode |
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271 | * 4) Method to be blocked to acquire the global lock |
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272 | * 5) Method to be blocked waiting to execute a serialized control method |
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273 | * that is currently executing |
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274 | * 6) About to invoke a user-installed opregion handler |
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275 | * |
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276 | ******************************************************************************/ |
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277 | |||
278 | |||
279 | AcpiExRelinquishInterpreter ( |
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280 | void) |
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281 | { |
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282 | ACPI_FUNCTION_TRACE (ExRelinquishInterpreter); |
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283 | |||
284 | |||
285 | |||
286 | * If the global serialized flag is set, do not release the interpreter. |
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287 | * This forces the interpreter to be single threaded. |
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288 | */ |
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289 | if (!AcpiGbl_AllMethodsSerialized) |
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290 | { |
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291 | AcpiExExitInterpreter (); |
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292 | } |
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293 | |||
294 | |||
295 | } |
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296 | |||
297 | |||
298 | |||
299 | * |
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300 | * FUNCTION: AcpiExTruncateFor32bitTable |
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301 | * |
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302 | * PARAMETERS: ObjDesc - Object to be truncated |
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303 | * |
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304 | * RETURN: none |
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305 | * |
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306 | * DESCRIPTION: Truncate an ACPI Integer to 32 bits if the execution mode is |
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307 | * 32-bit, as determined by the revision of the DSDT. |
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308 | * |
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309 | ******************************************************************************/ |
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310 | |||
311 | |||
312 | AcpiExTruncateFor32bitTable ( |
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313 | ACPI_OPERAND_OBJECT *ObjDesc) |
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314 | { |
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315 | |||
316 | |||
317 | |||
318 | |||
319 | |||
320 | * Object must be a valid number and we must be executing |
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321 | * a control method. NS node could be there for AML_INT_NAMEPATH_OP. |
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322 | */ |
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323 | if ((!ObjDesc) || |
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324 | (ACPI_GET_DESCRIPTOR_TYPE (ObjDesc) != ACPI_DESC_TYPE_OPERAND) || |
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325 | (ObjDesc->Common.Type != ACPI_TYPE_INTEGER)) |
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326 | { |
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327 | return; |
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328 | } |
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329 | |||
330 | |||
331 | { |
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332 | /* |
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333 | * We are running a method that exists in a 32-bit ACPI table. |
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334 | * Truncate the value to 32 bits by zeroing out the upper 32-bit field |
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335 | */ |
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336 | ObjDesc->Integer.Value &= (UINT64) ACPI_UINT32_MAX; |
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337 | } |
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338 | } |
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339 | |||
340 | |||
341 | |||
342 | * |
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343 | * FUNCTION: AcpiExAcquireGlobalLock |
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344 | * |
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345 | * PARAMETERS: FieldFlags - Flags with Lock rule: |
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346 | * AlwaysLock or NeverLock |
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347 | * |
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348 | * RETURN: None |
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349 | * |
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350 | * DESCRIPTION: Obtain the ACPI hardware Global Lock, only if the field |
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351 | * flags specifiy that it is to be obtained before field access. |
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352 | * |
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353 | ******************************************************************************/ |
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354 | |||
355 | |||
356 | AcpiExAcquireGlobalLock ( |
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357 | UINT32 FieldFlags) |
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358 | { |
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359 | ACPI_STATUS Status; |
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360 | |||
361 | |||
362 | |||
363 | |||
364 | |||
365 | |||
366 | |||
367 | |||
368 | { |
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369 | return_VOID; |
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370 | } |
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371 | |||
372 | |||
373 | |||
374 | |||
375 | AcpiGbl_GlobalLockMutex, AcpiOsGetThreadId ()); |
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376 | |||
377 | |||
378 | { |
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379 | ACPI_EXCEPTION ((AE_INFO, Status, |
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380 | "Could not acquire Global Lock")); |
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381 | } |
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382 | |||
383 | |||
384 | } |
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385 | |||
386 | |||
387 | |||
388 | * |
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389 | * FUNCTION: AcpiExReleaseGlobalLock |
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390 | * |
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391 | * PARAMETERS: FieldFlags - Flags with Lock rule: |
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392 | * AlwaysLock or NeverLock |
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393 | * |
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394 | * RETURN: None |
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395 | * |
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396 | * DESCRIPTION: Release the ACPI hardware Global Lock |
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397 | * |
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398 | ******************************************************************************/ |
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399 | |||
400 | |||
401 | AcpiExReleaseGlobalLock ( |
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402 | UINT32 FieldFlags) |
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403 | { |
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404 | ACPI_STATUS Status; |
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405 | |||
406 | |||
407 | |||
408 | |||
409 | |||
410 | |||
411 | |||
412 | |||
413 | { |
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414 | return_VOID; |
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415 | } |
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416 | |||
417 | |||
418 | |||
419 | |||
420 | if (ACPI_FAILURE (Status)) |
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421 | { |
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422 | /* Report the error, but there isn't much else we can do */ |
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423 | |||
424 | |||
425 | "Could not release Global Lock")); |
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426 | } |
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427 | |||
428 | |||
429 | } |
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430 | |||
431 | |||
432 | |||
433 | * |
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434 | * FUNCTION: AcpiExDigitsNeeded |
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435 | * |
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436 | * PARAMETERS: Value - Value to be represented |
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437 | * Base - Base of representation |
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438 | * |
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439 | * RETURN: The number of digits. |
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440 | * |
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441 | * DESCRIPTION: Calculate the number of digits needed to represent the Value |
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442 | * in the given Base (Radix) |
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443 | * |
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444 | ******************************************************************************/ |
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445 | |||
446 | |||
447 | AcpiExDigitsNeeded ( |
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448 | UINT64 Value, |
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449 | UINT32 Base) |
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450 | { |
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451 | UINT32 NumDigits; |
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452 | UINT64 CurrentValue; |
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453 | |||
454 | |||
455 | |||
456 | |||
457 | |||
458 | |||
459 | |||
460 | |||
461 | { |
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462 | return_UINT32 (1); |
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463 | } |
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464 | |||
465 | |||
466 | NumDigits = 0; |
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467 | |||
468 | |||
469 | |||
470 | |||
471 | { |
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472 | (void) AcpiUtShortDivide (CurrentValue, Base, &CurrentValue, NULL); |
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473 | NumDigits++; |
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474 | } |
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475 | |||
476 | |||
477 | } |
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478 | |||
479 | |||
480 | |||
481 | * |
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482 | * FUNCTION: AcpiExEisaIdToString |
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483 | * |
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484 | * PARAMETERS: CompressedId - EISAID to be converted |
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485 | * OutString - Where to put the converted string (8 bytes) |
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486 | * |
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487 | * RETURN: None |
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488 | * |
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489 | * DESCRIPTION: Convert a numeric EISAID to string representation. Return |
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490 | * buffer must be large enough to hold the string. The string |
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491 | * returned is always exactly of length ACPI_EISAID_STRING_SIZE |
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492 | * (includes null terminator). The EISAID is always 32 bits. |
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493 | * |
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494 | ******************************************************************************/ |
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495 | |||
496 | |||
497 | AcpiExEisaIdToString ( |
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498 | char *OutString, |
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499 | UINT64 CompressedId) |
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500 | { |
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501 | UINT32 SwappedId; |
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502 | |||
503 | |||
504 | |||
505 | |||
506 | |||
507 | |||
508 | |||
509 | |||
510 | { |
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511 | ACPI_WARNING ((AE_INFO, |
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512 | "Expected EISAID is larger than 32 bits: 0x%8.8X%8.8X, truncating", |
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513 | ACPI_FORMAT_UINT64 (CompressedId))); |
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514 | } |
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515 | |||
516 | |||
517 | |||
518 | |||
519 | |||
520 | |||
521 | |||
522 | |||
523 | OutString[1] = (char) (0x40 + ((SwappedId >> 21) & 0x1F)); |
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524 | OutString[2] = (char) (0x40 + ((SwappedId >> 16) & 0x1F)); |
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525 | OutString[3] = AcpiUtHexToAsciiChar ((UINT64) SwappedId, 12); |
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526 | OutString[4] = AcpiUtHexToAsciiChar ((UINT64) SwappedId, 8); |
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527 | OutString[5] = AcpiUtHexToAsciiChar ((UINT64) SwappedId, 4); |
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528 | OutString[6] = AcpiUtHexToAsciiChar ((UINT64) SwappedId, 0); |
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529 | OutString[7] = 0; |
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530 | } |
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531 | |||
532 | |||
533 | |||
534 | * |
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535 | * FUNCTION: AcpiExIntegerToString |
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536 | * |
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537 | * PARAMETERS: OutString - Where to put the converted string. At least |
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538 | * 21 bytes are needed to hold the largest |
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539 | * possible 64-bit integer. |
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540 | * Value - Value to be converted |
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541 | * |
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542 | * RETURN: None, string |
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543 | * |
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544 | * DESCRIPTION: Convert a 64-bit integer to decimal string representation. |
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545 | * Assumes string buffer is large enough to hold the string. The |
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546 | * largest string is (ACPI_MAX64_DECIMAL_DIGITS + 1). |
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547 | * |
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548 | ******************************************************************************/ |
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549 | |||
550 | |||
551 | AcpiExIntegerToString ( |
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552 | char *OutString, |
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553 | UINT64 Value) |
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554 | { |
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555 | UINT32 Count; |
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556 | UINT32 DigitsNeeded; |
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557 | UINT32 Remainder; |
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558 | |||
559 | |||
560 | |||
561 | |||
562 | |||
563 | |||
564 | OutString[DigitsNeeded] = 0; |
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565 | |||
566 | |||
567 | { |
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568 | (void) AcpiUtShortDivide (Value, 10, &Value, &Remainder); |
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569 | OutString[Count-1] = (char) ('0' + Remainder);\ |
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570 | } |
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571 | } |
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572 | |||
573 | |||
574 |