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1498 | serge | 1 | /****************************************************************************** |
2 | * |
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3 | * Module Name: dsfield - Dispatcher field routines |
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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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11 | * Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp. |
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12 | * All rights reserved. |
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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 __DSFIELD_C__ |
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117 | |||
118 | #include "acpi.h" |
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119 | #include "accommon.h" |
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120 | #include "amlcode.h" |
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121 | #include "acdispat.h" |
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122 | #include "acinterp.h" |
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123 | #include "acnamesp.h" |
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124 | #include "acparser.h" |
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125 | |||
126 | |||
127 | #define _COMPONENT ACPI_DISPATCHER |
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128 | ACPI_MODULE_NAME ("dsfield") |
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129 | |||
130 | /* Local prototypes */ |
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131 | |||
132 | static ACPI_STATUS |
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133 | AcpiDsGetFieldNames ( |
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134 | ACPI_CREATE_FIELD_INFO *Info, |
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135 | ACPI_WALK_STATE *WalkState, |
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136 | ACPI_PARSE_OBJECT *Arg); |
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137 | |||
138 | |||
139 | /******************************************************************************* |
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140 | * |
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141 | * FUNCTION: AcpiDsCreateBufferField |
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142 | * |
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143 | * PARAMETERS: Op - Current parse op (CreateXXField) |
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144 | * WalkState - Current state |
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145 | * |
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146 | * RETURN: Status |
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147 | * |
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148 | * DESCRIPTION: Execute the CreateField operators: |
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149 | * CreateBitFieldOp, |
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150 | * CreateByteFieldOp, |
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151 | * CreateWordFieldOp, |
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152 | * CreateDWordFieldOp, |
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153 | * CreateQWordFieldOp, |
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154 | * CreateFieldOp (all of which define a field in a buffer) |
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155 | * |
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156 | ******************************************************************************/ |
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157 | |||
158 | ACPI_STATUS |
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159 | AcpiDsCreateBufferField ( |
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160 | ACPI_PARSE_OBJECT *Op, |
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161 | ACPI_WALK_STATE *WalkState) |
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162 | { |
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163 | ACPI_PARSE_OBJECT *Arg; |
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164 | ACPI_NAMESPACE_NODE *Node; |
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165 | ACPI_STATUS Status; |
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166 | ACPI_OPERAND_OBJECT *ObjDesc; |
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167 | ACPI_OPERAND_OBJECT *SecondDesc = NULL; |
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168 | UINT32 Flags; |
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169 | |||
170 | |||
171 | ACPI_FUNCTION_TRACE (DsCreateBufferField); |
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172 | |||
173 | |||
174 | /* |
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175 | * Get the NameString argument (name of the new BufferField) |
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176 | */ |
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177 | if (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP) |
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178 | { |
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179 | /* For CreateField, name is the 4th argument */ |
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180 | |||
181 | Arg = AcpiPsGetArg (Op, 3); |
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182 | } |
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183 | else |
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184 | { |
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185 | /* For all other CreateXXXField operators, name is the 3rd argument */ |
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186 | |||
187 | Arg = AcpiPsGetArg (Op, 2); |
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188 | } |
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189 | |||
190 | if (!Arg) |
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191 | { |
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192 | return_ACPI_STATUS (AE_AML_NO_OPERAND); |
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193 | } |
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194 | |||
195 | if (WalkState->DeferredNode) |
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196 | { |
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197 | Node = WalkState->DeferredNode; |
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198 | Status = AE_OK; |
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199 | } |
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200 | else |
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201 | { |
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202 | /* Execute flag should always be set when this function is entered */ |
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203 | |||
204 | if (!(WalkState->ParseFlags & ACPI_PARSE_EXECUTE)) |
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205 | { |
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206 | return_ACPI_STATUS (AE_AML_INTERNAL); |
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207 | } |
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208 | |||
209 | /* Creating new namespace node, should not already exist */ |
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210 | |||
211 | Flags = ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE | |
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212 | ACPI_NS_ERROR_IF_FOUND; |
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213 | |||
214 | /* |
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215 | * Mark node temporary if we are executing a normal control |
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216 | * method. (Don't mark if this is a module-level code method) |
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217 | */ |
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218 | if (WalkState->MethodNode && |
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219 | !(WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL)) |
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220 | { |
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221 | Flags |= ACPI_NS_TEMPORARY; |
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222 | } |
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223 | |||
224 | /* Enter the NameString into the namespace */ |
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225 | |||
226 | Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String, |
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227 | ACPI_TYPE_ANY, ACPI_IMODE_LOAD_PASS1, |
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228 | Flags, WalkState, &Node); |
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229 | if (ACPI_FAILURE (Status)) |
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230 | { |
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231 | ACPI_ERROR_NAMESPACE (Arg->Common.Value.String, Status); |
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232 | return_ACPI_STATUS (Status); |
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233 | } |
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234 | } |
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235 | |||
236 | /* |
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237 | * We could put the returned object (Node) on the object stack for later, |
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238 | * but for now, we will put it in the "op" object that the parser uses, |
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239 | * so we can get it again at the end of this scope. |
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240 | */ |
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241 | Op->Common.Node = Node; |
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242 | |||
243 | /* |
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244 | * If there is no object attached to the node, this node was just created |
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245 | * and we need to create the field object. Otherwise, this was a lookup |
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246 | * of an existing node and we don't want to create the field object again. |
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247 | */ |
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248 | ObjDesc = AcpiNsGetAttachedObject (Node); |
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249 | if (ObjDesc) |
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250 | { |
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251 | return_ACPI_STATUS (AE_OK); |
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252 | } |
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253 | |||
254 | /* |
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255 | * The Field definition is not fully parsed at this time. |
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256 | * (We must save the address of the AML for the buffer and index operands) |
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257 | */ |
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258 | |||
259 | /* Create the buffer field object */ |
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260 | |||
261 | ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_BUFFER_FIELD); |
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262 | if (!ObjDesc) |
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263 | { |
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264 | Status = AE_NO_MEMORY; |
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265 | goto Cleanup; |
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266 | } |
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267 | |||
268 | /* |
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269 | * Remember location in AML stream of the field unit opcode and operands -- |
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270 | * since the buffer and index operands must be evaluated. |
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271 | */ |
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272 | SecondDesc = ObjDesc->Common.NextObject; |
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273 | SecondDesc->Extra.AmlStart = Op->Named.Data; |
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274 | SecondDesc->Extra.AmlLength = Op->Named.Length; |
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275 | ObjDesc->BufferField.Node = Node; |
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276 | |||
277 | /* Attach constructed field descriptors to parent node */ |
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278 | |||
279 | Status = AcpiNsAttachObject (Node, ObjDesc, ACPI_TYPE_BUFFER_FIELD); |
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280 | if (ACPI_FAILURE (Status)) |
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281 | { |
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282 | goto Cleanup; |
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283 | } |
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284 | |||
285 | |||
286 | Cleanup: |
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287 | |||
288 | /* Remove local reference to the object */ |
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289 | |||
290 | AcpiUtRemoveReference (ObjDesc); |
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291 | return_ACPI_STATUS (Status); |
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292 | } |
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293 | |||
294 | |||
295 | /******************************************************************************* |
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296 | * |
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297 | * FUNCTION: AcpiDsGetFieldNames |
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298 | * |
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299 | * PARAMETERS: Info - CreateField info structure |
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300 | * ` WalkState - Current method state |
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301 | * Arg - First parser arg for the field name list |
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302 | * |
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303 | * RETURN: Status |
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304 | * |
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305 | * DESCRIPTION: Process all named fields in a field declaration. Names are |
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306 | * entered into the namespace. |
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307 | * |
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308 | ******************************************************************************/ |
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309 | |||
310 | static ACPI_STATUS |
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311 | AcpiDsGetFieldNames ( |
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312 | ACPI_CREATE_FIELD_INFO *Info, |
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313 | ACPI_WALK_STATE *WalkState, |
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314 | ACPI_PARSE_OBJECT *Arg) |
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315 | { |
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316 | ACPI_STATUS Status; |
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317 | UINT64 Position; |
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318 | |||
319 | |||
320 | ACPI_FUNCTION_TRACE_PTR (DsGetFieldNames, Info); |
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321 | |||
322 | |||
323 | /* First field starts at bit zero */ |
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324 | |||
325 | Info->FieldBitPosition = 0; |
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326 | |||
327 | /* Process all elements in the field list (of parse nodes) */ |
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328 | |||
329 | while (Arg) |
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330 | { |
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331 | /* |
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332 | * Three types of field elements are handled: |
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333 | * 1) Offset - specifies a bit offset |
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334 | * 2) AccessAs - changes the access mode |
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335 | * 3) Name - Enters a new named field into the namespace |
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336 | */ |
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337 | switch (Arg->Common.AmlOpcode) |
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338 | { |
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339 | case AML_INT_RESERVEDFIELD_OP: |
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340 | |||
341 | Position = (UINT64) Info->FieldBitPosition |
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342 | + (UINT64) Arg->Common.Value.Size; |
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343 | |||
344 | if (Position > ACPI_UINT32_MAX) |
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345 | { |
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346 | ACPI_ERROR ((AE_INFO, |
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347 | "Bit offset within field too large (> 0xFFFFFFFF)")); |
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348 | return_ACPI_STATUS (AE_SUPPORT); |
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349 | } |
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350 | |||
351 | Info->FieldBitPosition = (UINT32) Position; |
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352 | break; |
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353 | |||
354 | |||
355 | case AML_INT_ACCESSFIELD_OP: |
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356 | |||
357 | /* |
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358 | * Get a new AccessType and AccessAttribute -- to be used for all |
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359 | * field units that follow, until field end or another AccessAs |
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360 | * keyword. |
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361 | * |
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362 | * In FieldFlags, preserve the flag bits other than the |
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363 | * ACCESS_TYPE bits |
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364 | */ |
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365 | Info->FieldFlags = (UINT8) |
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366 | ((Info->FieldFlags & ~(AML_FIELD_ACCESS_TYPE_MASK)) | |
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367 | ((UINT8) ((UINT32) Arg->Common.Value.Integer >> 8))); |
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368 | |||
369 | Info->Attribute = (UINT8) (Arg->Common.Value.Integer); |
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370 | break; |
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371 | |||
372 | |||
373 | case AML_INT_NAMEDFIELD_OP: |
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374 | |||
375 | /* Lookup the name, it should already exist */ |
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376 | |||
377 | Status = AcpiNsLookup (WalkState->ScopeInfo, |
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378 | (char *) &Arg->Named.Name, Info->FieldType, |
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379 | ACPI_IMODE_EXECUTE, ACPI_NS_DONT_OPEN_SCOPE, |
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380 | WalkState, &Info->FieldNode); |
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381 | if (ACPI_FAILURE (Status)) |
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382 | { |
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383 | ACPI_ERROR_NAMESPACE ((char *) &Arg->Named.Name, Status); |
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384 | return_ACPI_STATUS (Status); |
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385 | } |
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386 | else |
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387 | { |
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388 | Arg->Common.Node = Info->FieldNode; |
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389 | Info->FieldBitLength = Arg->Common.Value.Size; |
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390 | |||
391 | /* |
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392 | * If there is no object attached to the node, this node was |
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393 | * just created and we need to create the field object. |
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394 | * Otherwise, this was a lookup of an existing node and we |
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395 | * don't want to create the field object again. |
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396 | */ |
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397 | if (!AcpiNsGetAttachedObject (Info->FieldNode)) |
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398 | { |
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399 | Status = AcpiExPrepFieldValue (Info); |
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400 | if (ACPI_FAILURE (Status)) |
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401 | { |
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402 | return_ACPI_STATUS (Status); |
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403 | } |
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404 | } |
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405 | } |
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406 | |||
407 | /* Keep track of bit position for the next field */ |
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408 | |||
409 | Position = (UINT64) Info->FieldBitPosition |
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410 | + (UINT64) Arg->Common.Value.Size; |
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411 | |||
412 | if (Position > ACPI_UINT32_MAX) |
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413 | { |
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414 | ACPI_ERROR ((AE_INFO, |
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415 | "Field [%4.4s] bit offset too large (> 0xFFFFFFFF)", |
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416 | ACPI_CAST_PTR (char, &Info->FieldNode->Name))); |
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417 | return_ACPI_STATUS (AE_SUPPORT); |
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418 | } |
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419 | |||
420 | Info->FieldBitPosition += Info->FieldBitLength; |
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421 | break; |
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422 | |||
423 | |||
424 | default: |
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425 | |||
426 | ACPI_ERROR ((AE_INFO, |
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427 | "Invalid opcode in field list: 0x%X", Arg->Common.AmlOpcode)); |
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428 | return_ACPI_STATUS (AE_AML_BAD_OPCODE); |
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429 | } |
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430 | |||
431 | Arg = Arg->Common.Next; |
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432 | } |
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433 | |||
434 | return_ACPI_STATUS (AE_OK); |
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435 | } |
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436 | |||
437 | |||
438 | /******************************************************************************* |
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439 | * |
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440 | * FUNCTION: AcpiDsCreateField |
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441 | * |
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442 | * PARAMETERS: Op - Op containing the Field definition and args |
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443 | * RegionNode - Object for the containing Operation Region |
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444 | * ` WalkState - Current method state |
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445 | * |
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446 | * RETURN: Status |
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447 | * |
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448 | * DESCRIPTION: Create a new field in the specified operation region |
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449 | * |
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450 | ******************************************************************************/ |
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451 | |||
452 | ACPI_STATUS |
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453 | AcpiDsCreateField ( |
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454 | ACPI_PARSE_OBJECT *Op, |
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455 | ACPI_NAMESPACE_NODE *RegionNode, |
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456 | ACPI_WALK_STATE *WalkState) |
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457 | { |
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458 | ACPI_STATUS Status; |
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459 | ACPI_PARSE_OBJECT *Arg; |
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460 | ACPI_CREATE_FIELD_INFO Info; |
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461 | |||
462 | |||
463 | ACPI_FUNCTION_TRACE_PTR (DsCreateField, Op); |
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464 | |||
465 | |||
466 | /* First arg is the name of the parent OpRegion (must already exist) */ |
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467 | |||
468 | Arg = Op->Common.Value.Arg; |
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469 | if (!RegionNode) |
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470 | { |
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471 | Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.Name, |
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472 | ACPI_TYPE_REGION, ACPI_IMODE_EXECUTE, |
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473 | ACPI_NS_SEARCH_PARENT, WalkState, &RegionNode); |
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474 | if (ACPI_FAILURE (Status)) |
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475 | { |
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476 | ACPI_ERROR_NAMESPACE (Arg->Common.Value.Name, Status); |
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477 | return_ACPI_STATUS (Status); |
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478 | } |
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479 | } |
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480 | |||
481 | /* Second arg is the field flags */ |
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482 | |||
483 | Arg = Arg->Common.Next; |
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484 | Info.FieldFlags = (UINT8) Arg->Common.Value.Integer; |
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485 | Info.Attribute = 0; |
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486 | |||
487 | /* Each remaining arg is a Named Field */ |
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488 | |||
489 | Info.FieldType = ACPI_TYPE_LOCAL_REGION_FIELD; |
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490 | Info.RegionNode = RegionNode; |
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491 | |||
492 | Status = AcpiDsGetFieldNames (&Info, WalkState, Arg->Common.Next); |
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493 | |||
494 | return_ACPI_STATUS (Status); |
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495 | } |
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496 | |||
497 | |||
498 | /******************************************************************************* |
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499 | * |
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500 | * FUNCTION: AcpiDsInitFieldObjects |
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501 | * |
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502 | * PARAMETERS: Op - Op containing the Field definition and args |
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503 | * ` WalkState - Current method state |
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504 | * |
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505 | * RETURN: Status |
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506 | * |
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507 | * DESCRIPTION: For each "Field Unit" name in the argument list that is |
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508 | * part of the field declaration, enter the name into the |
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509 | * namespace. |
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510 | * |
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511 | ******************************************************************************/ |
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512 | |||
513 | ACPI_STATUS |
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514 | AcpiDsInitFieldObjects ( |
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515 | ACPI_PARSE_OBJECT *Op, |
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516 | ACPI_WALK_STATE *WalkState) |
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517 | { |
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518 | ACPI_STATUS Status; |
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519 | ACPI_PARSE_OBJECT *Arg = NULL; |
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520 | ACPI_NAMESPACE_NODE *Node; |
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521 | UINT8 Type = 0; |
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522 | UINT32 Flags; |
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523 | |||
524 | |||
525 | ACPI_FUNCTION_TRACE_PTR (DsInitFieldObjects, Op); |
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526 | |||
527 | |||
528 | /* Execute flag should always be set when this function is entered */ |
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529 | |||
530 | if (!(WalkState->ParseFlags & ACPI_PARSE_EXECUTE)) |
||
531 | { |
||
532 | if (WalkState->ParseFlags & ACPI_PARSE_DEFERRED_OP) |
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533 | { |
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534 | /* BankField Op is deferred, just return OK */ |
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535 | |||
536 | return_ACPI_STATUS (AE_OK); |
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537 | } |
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538 | |||
539 | return_ACPI_STATUS (AE_AML_INTERNAL); |
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540 | } |
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541 | |||
542 | /* |
||
543 | * Get the FieldList argument for this opcode. This is the start of the |
||
544 | * list of field elements. |
||
545 | */ |
||
546 | switch (WalkState->Opcode) |
||
547 | { |
||
548 | case AML_FIELD_OP: |
||
549 | Arg = AcpiPsGetArg (Op, 2); |
||
550 | Type = ACPI_TYPE_LOCAL_REGION_FIELD; |
||
551 | break; |
||
552 | |||
553 | case AML_BANK_FIELD_OP: |
||
554 | Arg = AcpiPsGetArg (Op, 4); |
||
555 | Type = ACPI_TYPE_LOCAL_BANK_FIELD; |
||
556 | break; |
||
557 | |||
558 | case AML_INDEX_FIELD_OP: |
||
559 | Arg = AcpiPsGetArg (Op, 3); |
||
560 | Type = ACPI_TYPE_LOCAL_INDEX_FIELD; |
||
561 | break; |
||
562 | |||
563 | default: |
||
564 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
||
565 | } |
||
566 | |||
567 | /* Creating new namespace node(s), should not already exist */ |
||
568 | |||
569 | Flags = ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE | |
||
570 | ACPI_NS_ERROR_IF_FOUND; |
||
571 | |||
572 | /* |
||
573 | * Mark node(s) temporary if we are executing a normal control |
||
574 | * method. (Don't mark if this is a module-level code method) |
||
575 | */ |
||
576 | if (WalkState->MethodNode && |
||
577 | !(WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL)) |
||
578 | { |
||
579 | Flags |= ACPI_NS_TEMPORARY; |
||
580 | } |
||
581 | |||
582 | /* |
||
583 | * Walk the list of entries in the FieldList |
||
584 | * Note: FieldList can be of zero length. In this case, Arg will be NULL. |
||
585 | */ |
||
586 | while (Arg) |
||
587 | { |
||
588 | /* |
||
589 | * Ignore OFFSET and ACCESSAS terms here; we are only interested in the |
||
590 | * field names in order to enter them into the namespace. |
||
591 | */ |
||
592 | if (Arg->Common.AmlOpcode == AML_INT_NAMEDFIELD_OP) |
||
593 | { |
||
594 | Status = AcpiNsLookup (WalkState->ScopeInfo, |
||
595 | (char *) &Arg->Named.Name, Type, ACPI_IMODE_LOAD_PASS1, |
||
596 | Flags, WalkState, &Node); |
||
597 | if (ACPI_FAILURE (Status)) |
||
598 | { |
||
599 | ACPI_ERROR_NAMESPACE ((char *) &Arg->Named.Name, Status); |
||
600 | if (Status != AE_ALREADY_EXISTS) |
||
601 | { |
||
602 | return_ACPI_STATUS (Status); |
||
603 | } |
||
604 | |||
605 | /* Name already exists, just ignore this error */ |
||
606 | |||
607 | Status = AE_OK; |
||
608 | } |
||
609 | |||
610 | Arg->Common.Node = Node; |
||
611 | } |
||
612 | |||
613 | /* Get the next field element in the list */ |
||
614 | |||
615 | Arg = Arg->Common.Next; |
||
616 | } |
||
617 | |||
618 | return_ACPI_STATUS (AE_OK); |
||
619 | } |
||
620 | |||
621 | |||
622 | /******************************************************************************* |
||
623 | * |
||
624 | * FUNCTION: AcpiDsCreateBankField |
||
625 | * |
||
626 | * PARAMETERS: Op - Op containing the Field definition and args |
||
627 | * RegionNode - Object for the containing Operation Region |
||
628 | * WalkState - Current method state |
||
629 | * |
||
630 | * RETURN: Status |
||
631 | * |
||
632 | * DESCRIPTION: Create a new bank field in the specified operation region |
||
633 | * |
||
634 | ******************************************************************************/ |
||
635 | |||
636 | ACPI_STATUS |
||
637 | AcpiDsCreateBankField ( |
||
638 | ACPI_PARSE_OBJECT *Op, |
||
639 | ACPI_NAMESPACE_NODE *RegionNode, |
||
640 | ACPI_WALK_STATE *WalkState) |
||
641 | { |
||
642 | ACPI_STATUS Status; |
||
643 | ACPI_PARSE_OBJECT *Arg; |
||
644 | ACPI_CREATE_FIELD_INFO Info; |
||
645 | |||
646 | |||
647 | ACPI_FUNCTION_TRACE_PTR (DsCreateBankField, Op); |
||
648 | |||
649 | |||
650 | /* First arg is the name of the parent OpRegion (must already exist) */ |
||
651 | |||
652 | Arg = Op->Common.Value.Arg; |
||
653 | if (!RegionNode) |
||
654 | { |
||
655 | Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.Name, |
||
656 | ACPI_TYPE_REGION, ACPI_IMODE_EXECUTE, |
||
657 | ACPI_NS_SEARCH_PARENT, WalkState, &RegionNode); |
||
658 | if (ACPI_FAILURE (Status)) |
||
659 | { |
||
660 | ACPI_ERROR_NAMESPACE (Arg->Common.Value.Name, Status); |
||
661 | return_ACPI_STATUS (Status); |
||
662 | } |
||
663 | } |
||
664 | |||
665 | /* Second arg is the Bank Register (Field) (must already exist) */ |
||
666 | |||
667 | Arg = Arg->Common.Next; |
||
668 | Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String, |
||
669 | ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, |
||
670 | ACPI_NS_SEARCH_PARENT, WalkState, &Info.RegisterNode); |
||
671 | if (ACPI_FAILURE (Status)) |
||
672 | { |
||
673 | ACPI_ERROR_NAMESPACE (Arg->Common.Value.String, Status); |
||
674 | return_ACPI_STATUS (Status); |
||
675 | } |
||
676 | |||
677 | /* |
||
678 | * Third arg is the BankValue |
||
679 | * This arg is a TermArg, not a constant |
||
680 | * It will be evaluated later, by AcpiDsEvalBankFieldOperands |
||
681 | */ |
||
682 | Arg = Arg->Common.Next; |
||
683 | |||
684 | /* Fourth arg is the field flags */ |
||
685 | |||
686 | Arg = Arg->Common.Next; |
||
687 | Info.FieldFlags = (UINT8) Arg->Common.Value.Integer; |
||
688 | |||
689 | /* Each remaining arg is a Named Field */ |
||
690 | |||
691 | Info.FieldType = ACPI_TYPE_LOCAL_BANK_FIELD; |
||
692 | Info.RegionNode = RegionNode; |
||
693 | |||
694 | /* |
||
695 | * Use Info.DataRegisterNode to store BankField Op |
||
696 | * It's safe because DataRegisterNode will never be used when create bank field |
||
697 | * We store AmlStart and AmlLength in the BankField Op for late evaluation |
||
698 | * Used in AcpiExPrepFieldValue(Info) |
||
699 | * |
||
700 | * TBD: Or, should we add a field in ACPI_CREATE_FIELD_INFO, like "void *ParentOp"? |
||
701 | */ |
||
702 | Info.DataRegisterNode = (ACPI_NAMESPACE_NODE*) Op; |
||
703 | |||
704 | Status = AcpiDsGetFieldNames (&Info, WalkState, Arg->Common.Next); |
||
705 | return_ACPI_STATUS (Status); |
||
706 | } |
||
707 | |||
708 | |||
709 | /******************************************************************************* |
||
710 | * |
||
711 | * FUNCTION: AcpiDsCreateIndexField |
||
712 | * |
||
713 | * PARAMETERS: Op - Op containing the Field definition and args |
||
714 | * RegionNode - Object for the containing Operation Region |
||
715 | * ` WalkState - Current method state |
||
716 | * |
||
717 | * RETURN: Status |
||
718 | * |
||
719 | * DESCRIPTION: Create a new index field in the specified operation region |
||
720 | * |
||
721 | ******************************************************************************/ |
||
722 | |||
723 | ACPI_STATUS |
||
724 | AcpiDsCreateIndexField ( |
||
725 | ACPI_PARSE_OBJECT *Op, |
||
726 | ACPI_NAMESPACE_NODE *RegionNode, |
||
727 | ACPI_WALK_STATE *WalkState) |
||
728 | { |
||
729 | ACPI_STATUS Status; |
||
730 | ACPI_PARSE_OBJECT *Arg; |
||
731 | ACPI_CREATE_FIELD_INFO Info; |
||
732 | |||
733 | |||
734 | ACPI_FUNCTION_TRACE_PTR (DsCreateIndexField, Op); |
||
735 | |||
736 | |||
737 | /* First arg is the name of the Index register (must already exist) */ |
||
738 | |||
739 | Arg = Op->Common.Value.Arg; |
||
740 | Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String, |
||
741 | ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, |
||
742 | ACPI_NS_SEARCH_PARENT, WalkState, &Info.RegisterNode); |
||
743 | if (ACPI_FAILURE (Status)) |
||
744 | { |
||
745 | ACPI_ERROR_NAMESPACE (Arg->Common.Value.String, Status); |
||
746 | return_ACPI_STATUS (Status); |
||
747 | } |
||
748 | |||
749 | /* Second arg is the data register (must already exist) */ |
||
750 | |||
751 | Arg = Arg->Common.Next; |
||
752 | Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String, |
||
753 | ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, |
||
754 | ACPI_NS_SEARCH_PARENT, WalkState, &Info.DataRegisterNode); |
||
755 | if (ACPI_FAILURE (Status)) |
||
756 | { |
||
757 | ACPI_ERROR_NAMESPACE (Arg->Common.Value.String, Status); |
||
758 | return_ACPI_STATUS (Status); |
||
759 | } |
||
760 | |||
761 | /* Next arg is the field flags */ |
||
762 | |||
763 | Arg = Arg->Common.Next; |
||
764 | Info.FieldFlags = (UINT8) Arg->Common.Value.Integer; |
||
765 | |||
766 | /* Each remaining arg is a Named Field */ |
||
767 | |||
768 | Info.FieldType = ACPI_TYPE_LOCAL_INDEX_FIELD; |
||
769 | Info.RegionNode = RegionNode; |
||
770 | |||
771 | Status = AcpiDsGetFieldNames (&Info, WalkState, Arg->Common.Next); |
||
772 | |||
773 | return_ACPI_STATUS (Status); |
||
774 | } |
||
775 |