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Rev | Author | Line No. | Line |
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1498 | serge | 1 | /****************************************************************************** |
2 | * |
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3 | * Module Name: psxface - Parser external interfaces |
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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 __PSXFACE_C__ |
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117 | |||
118 | #include "acpi.h" |
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119 | #include "accommon.h" |
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120 | #include "acparser.h" |
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121 | #include "acdispat.h" |
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122 | #include "acinterp.h" |
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123 | #include "actables.h" |
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124 | |||
125 | |||
126 | #define _COMPONENT ACPI_PARSER |
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127 | ACPI_MODULE_NAME ("psxface") |
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128 | |||
129 | /* Local Prototypes */ |
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130 | |||
131 | static void |
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132 | AcpiPsStartTrace ( |
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133 | ACPI_EVALUATE_INFO *Info); |
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134 | |||
135 | static void |
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136 | AcpiPsStopTrace ( |
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137 | ACPI_EVALUATE_INFO *Info); |
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138 | |||
139 | static void |
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140 | AcpiPsUpdateParameterList ( |
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141 | ACPI_EVALUATE_INFO *Info, |
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142 | UINT16 Action); |
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143 | |||
144 | |||
145 | /******************************************************************************* |
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146 | * |
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147 | * FUNCTION: AcpiDebugTrace |
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148 | * |
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149 | * PARAMETERS: MethodName - Valid ACPI name string |
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150 | * DebugLevel - Optional level mask. 0 to use default |
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151 | * DebugLayer - Optional layer mask. 0 to use default |
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152 | * Flags - bit 1: one shot(1) or persistent(0) |
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153 | * |
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154 | * RETURN: Status |
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155 | * |
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156 | * DESCRIPTION: External interface to enable debug tracing during control |
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157 | * method execution |
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158 | * |
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159 | ******************************************************************************/ |
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160 | |||
161 | ACPI_STATUS |
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162 | AcpiDebugTrace ( |
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163 | char *Name, |
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164 | UINT32 DebugLevel, |
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165 | UINT32 DebugLayer, |
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166 | UINT32 Flags) |
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167 | { |
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168 | ACPI_STATUS Status; |
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169 | |||
170 | |||
171 | Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); |
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172 | if (ACPI_FAILURE (Status)) |
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173 | { |
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174 | return (Status); |
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175 | } |
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176 | |||
177 | /* TBDs: Validate name, allow full path or just nameseg */ |
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178 | |||
179 | AcpiGbl_TraceMethodName = *ACPI_CAST_PTR (UINT32, Name); |
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180 | AcpiGbl_TraceFlags = Flags; |
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181 | |||
182 | if (DebugLevel) |
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183 | { |
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184 | AcpiGbl_TraceDbgLevel = DebugLevel; |
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185 | } |
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186 | if (DebugLayer) |
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187 | { |
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188 | AcpiGbl_TraceDbgLayer = DebugLayer; |
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189 | } |
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190 | |||
191 | (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); |
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192 | return (AE_OK); |
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193 | } |
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194 | |||
195 | |||
196 | /******************************************************************************* |
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197 | * |
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198 | * FUNCTION: AcpiPsStartTrace |
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199 | * |
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200 | * PARAMETERS: Info - Method info struct |
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201 | * |
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202 | * RETURN: None |
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203 | * |
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204 | * DESCRIPTION: Start control method execution trace |
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205 | * |
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206 | ******************************************************************************/ |
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207 | |||
208 | static void |
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209 | AcpiPsStartTrace ( |
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210 | ACPI_EVALUATE_INFO *Info) |
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211 | { |
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212 | ACPI_STATUS Status; |
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213 | |||
214 | |||
215 | ACPI_FUNCTION_ENTRY (); |
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216 | |||
217 | |||
218 | Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); |
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219 | if (ACPI_FAILURE (Status)) |
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220 | { |
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221 | return; |
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222 | } |
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223 | |||
224 | if ((!AcpiGbl_TraceMethodName) || |
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225 | (AcpiGbl_TraceMethodName != Info->ResolvedNode->Name.Integer)) |
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226 | { |
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227 | goto Exit; |
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228 | } |
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229 | |||
230 | AcpiGbl_OriginalDbgLevel = AcpiDbgLevel; |
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231 | AcpiGbl_OriginalDbgLayer = AcpiDbgLayer; |
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232 | |||
233 | AcpiDbgLevel = 0x00FFFFFF; |
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234 | AcpiDbgLayer = ACPI_UINT32_MAX; |
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235 | |||
236 | if (AcpiGbl_TraceDbgLevel) |
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237 | { |
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238 | AcpiDbgLevel = AcpiGbl_TraceDbgLevel; |
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239 | } |
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240 | if (AcpiGbl_TraceDbgLayer) |
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241 | { |
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242 | AcpiDbgLayer = AcpiGbl_TraceDbgLayer; |
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243 | } |
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244 | |||
245 | |||
246 | Exit: |
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247 | (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); |
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248 | } |
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249 | |||
250 | |||
251 | /******************************************************************************* |
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252 | * |
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253 | * FUNCTION: AcpiPsStopTrace |
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254 | * |
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255 | * PARAMETERS: Info - Method info struct |
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256 | * |
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257 | * RETURN: None |
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258 | * |
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259 | * DESCRIPTION: Stop control method execution trace |
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260 | * |
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261 | ******************************************************************************/ |
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262 | |||
263 | static void |
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264 | AcpiPsStopTrace ( |
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265 | ACPI_EVALUATE_INFO *Info) |
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266 | { |
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267 | ACPI_STATUS Status; |
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268 | |||
269 | |||
270 | ACPI_FUNCTION_ENTRY (); |
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271 | |||
272 | |||
273 | Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); |
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274 | if (ACPI_FAILURE (Status)) |
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275 | { |
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276 | return; |
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277 | } |
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278 | |||
279 | if ((!AcpiGbl_TraceMethodName) || |
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280 | (AcpiGbl_TraceMethodName != Info->ResolvedNode->Name.Integer)) |
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281 | { |
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282 | goto Exit; |
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283 | } |
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284 | |||
285 | /* Disable further tracing if type is one-shot */ |
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286 | |||
287 | if (AcpiGbl_TraceFlags & 1) |
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288 | { |
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289 | AcpiGbl_TraceMethodName = 0; |
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290 | AcpiGbl_TraceDbgLevel = 0; |
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291 | AcpiGbl_TraceDbgLayer = 0; |
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292 | } |
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293 | |||
294 | AcpiDbgLevel = AcpiGbl_OriginalDbgLevel; |
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295 | AcpiDbgLayer = AcpiGbl_OriginalDbgLayer; |
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296 | |||
297 | Exit: |
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298 | (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); |
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299 | } |
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300 | |||
301 | |||
302 | /******************************************************************************* |
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303 | * |
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304 | * FUNCTION: AcpiPsExecuteMethod |
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305 | * |
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306 | * PARAMETERS: Info - Method info block, contains: |
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307 | * Node - Method Node to execute |
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308 | * ObjDesc - Method object |
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309 | * Parameters - List of parameters to pass to the method, |
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310 | * terminated by NULL. Params itself may be |
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311 | * NULL if no parameters are being passed. |
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312 | * ReturnObject - Where to put method's return value (if |
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313 | * any). If NULL, no value is returned. |
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314 | * ParameterType - Type of Parameter list |
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315 | * ReturnObject - Where to put method's return value (if |
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316 | * any). If NULL, no value is returned. |
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317 | * PassNumber - Parse or execute pass |
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318 | * |
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319 | * RETURN: Status |
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320 | * |
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321 | * DESCRIPTION: Execute a control method |
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322 | * |
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323 | ******************************************************************************/ |
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324 | |||
325 | ACPI_STATUS |
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326 | AcpiPsExecuteMethod ( |
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327 | ACPI_EVALUATE_INFO *Info) |
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328 | { |
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329 | ACPI_STATUS Status; |
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330 | ACPI_PARSE_OBJECT *Op; |
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331 | ACPI_WALK_STATE *WalkState; |
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332 | |||
333 | |||
334 | ACPI_FUNCTION_TRACE (PsExecuteMethod); |
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335 | |||
336 | |||
337 | /* Quick validation of DSDT header */ |
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338 | |||
339 | AcpiTbCheckDsdtHeader (); |
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340 | |||
341 | /* Validate the Info and method Node */ |
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342 | |||
343 | if (!Info || !Info->ResolvedNode) |
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344 | { |
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345 | return_ACPI_STATUS (AE_NULL_ENTRY); |
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346 | } |
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347 | |||
348 | /* Init for new method, wait on concurrency semaphore */ |
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349 | |||
350 | Status = AcpiDsBeginMethodExecution (Info->ResolvedNode, Info->ObjDesc, NULL); |
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351 | if (ACPI_FAILURE (Status)) |
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352 | { |
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353 | return_ACPI_STATUS (Status); |
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354 | } |
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355 | |||
356 | /* |
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357 | * The caller "owns" the parameters, so give each one an extra reference |
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358 | */ |
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359 | AcpiPsUpdateParameterList (Info, REF_INCREMENT); |
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360 | |||
361 | /* Begin tracing if requested */ |
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362 | |||
363 | AcpiPsStartTrace (Info); |
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364 | |||
365 | /* |
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366 | * Execute the method. Performs parse simultaneously |
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367 | */ |
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368 | ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, |
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369 | "**** Begin Method Parse/Execute [%4.4s] **** Node=%p Obj=%p\n", |
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370 | Info->ResolvedNode->Name.Ascii, Info->ResolvedNode, Info->ObjDesc)); |
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371 | |||
372 | /* Create and init a Root Node */ |
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373 | |||
374 | Op = AcpiPsCreateScopeOp (); |
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375 | if (!Op) |
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376 | { |
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377 | Status = AE_NO_MEMORY; |
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378 | goto Cleanup; |
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379 | } |
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380 | |||
381 | /* Create and initialize a new walk state */ |
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382 | |||
383 | Info->PassNumber = ACPI_IMODE_EXECUTE; |
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384 | WalkState = AcpiDsCreateWalkState ( |
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385 | Info->ObjDesc->Method.OwnerId, NULL, NULL, NULL); |
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386 | if (!WalkState) |
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387 | { |
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388 | Status = AE_NO_MEMORY; |
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389 | goto Cleanup; |
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390 | } |
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391 | |||
392 | Status = AcpiDsInitAmlWalk (WalkState, Op, Info->ResolvedNode, |
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393 | Info->ObjDesc->Method.AmlStart, |
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394 | Info->ObjDesc->Method.AmlLength, Info, Info->PassNumber); |
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395 | if (ACPI_FAILURE (Status)) |
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396 | { |
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397 | AcpiDsDeleteWalkState (WalkState); |
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398 | goto Cleanup; |
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399 | } |
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400 | |||
2216 | Serge | 401 | if (Info->ObjDesc->Method.InfoFlags & ACPI_METHOD_MODULE_LEVEL) |
1498 | serge | 402 | { |
403 | WalkState->ParseFlags |= ACPI_PARSE_MODULE_LEVEL; |
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404 | } |
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405 | |||
406 | /* Invoke an internal method if necessary */ |
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407 | |||
2216 | Serge | 408 | if (Info->ObjDesc->Method.InfoFlags & ACPI_METHOD_INTERNAL_ONLY) |
1498 | serge | 409 | { |
2216 | Serge | 410 | Status = Info->ObjDesc->Method.Dispatch.Implementation (WalkState); |
1498 | serge | 411 | Info->ReturnObject = WalkState->ReturnDesc; |
412 | |||
413 | /* Cleanup states */ |
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414 | |||
415 | AcpiDsScopeStackClear (WalkState); |
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416 | AcpiPsCleanupScope (&WalkState->ParserState); |
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417 | AcpiDsTerminateControlMethod (WalkState->MethodDesc, WalkState); |
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418 | AcpiDsDeleteWalkState (WalkState); |
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419 | goto Cleanup; |
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420 | } |
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421 | |||
422 | /* |
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423 | * Start method evaluation with an implicit return of zero. This is done |
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424 | * for Windows compatibility. |
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425 | */ |
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426 | if (AcpiGbl_EnableInterpreterSlack) |
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427 | { |
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428 | WalkState->ImplicitReturnObj = |
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429 | AcpiUtCreateIntegerObject ((UINT64) 0); |
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430 | if (!WalkState->ImplicitReturnObj) |
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431 | { |
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432 | Status = AE_NO_MEMORY; |
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433 | AcpiDsDeleteWalkState (WalkState); |
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434 | goto Cleanup; |
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435 | } |
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436 | } |
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437 | |||
438 | /* Parse the AML */ |
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439 | |||
440 | Status = AcpiPsParseAml (WalkState); |
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441 | |||
442 | /* WalkState was deleted by ParseAml */ |
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443 | |||
444 | Cleanup: |
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445 | AcpiPsDeleteParseTree (Op); |
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446 | |||
447 | /* End optional tracing */ |
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448 | |||
449 | AcpiPsStopTrace (Info); |
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450 | |||
451 | /* Take away the extra reference that we gave the parameters above */ |
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452 | |||
453 | AcpiPsUpdateParameterList (Info, REF_DECREMENT); |
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454 | |||
455 | /* Exit now if error above */ |
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456 | |||
457 | if (ACPI_FAILURE (Status)) |
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458 | { |
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459 | return_ACPI_STATUS (Status); |
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460 | } |
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461 | |||
462 | /* |
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463 | * If the method has returned an object, signal this to the caller with |
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464 | * a control exception code |
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465 | */ |
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466 | if (Info->ReturnObject) |
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467 | { |
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468 | ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Method returned ObjDesc=%p\n", |
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469 | Info->ReturnObject)); |
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470 | ACPI_DUMP_STACK_ENTRY (Info->ReturnObject); |
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471 | |||
472 | Status = AE_CTRL_RETURN_VALUE; |
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473 | } |
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474 | |||
475 | return_ACPI_STATUS (Status); |
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476 | } |
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477 | |||
478 | |||
479 | /******************************************************************************* |
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480 | * |
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481 | * FUNCTION: AcpiPsUpdateParameterList |
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482 | * |
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483 | * PARAMETERS: Info - See ACPI_EVALUATE_INFO |
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484 | * (Used: ParameterType and Parameters) |
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485 | * Action - Add or Remove reference |
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486 | * |
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487 | * RETURN: Status |
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488 | * |
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489 | * DESCRIPTION: Update reference count on all method parameter objects |
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490 | * |
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491 | ******************************************************************************/ |
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492 | |||
493 | static void |
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494 | AcpiPsUpdateParameterList ( |
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495 | ACPI_EVALUATE_INFO *Info, |
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496 | UINT16 Action) |
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497 | { |
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498 | UINT32 i; |
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499 | |||
500 | |||
501 | if (Info->Parameters) |
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502 | { |
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503 | /* Update reference count for each parameter */ |
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504 | |||
505 | for (i = 0; Info->Parameters[i]; i++) |
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506 | { |
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507 | /* Ignore errors, just do them all */ |
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508 | |||
509 | (void) AcpiUtUpdateObjectReference (Info->Parameters[i], Action); |
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510 | } |
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511 | } |
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512 | } |
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513 |