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Rev | Author | Line No. | Line |
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1498 | serge | 1 | /******************************************************************************* |
2 | * |
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3 | * Module Name: utdelete - object deletion and reference count utilities |
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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 __UTDELETE_C__ |
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117 | |||
118 | #include "acpi.h" |
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119 | #include "accommon.h" |
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120 | #include "acinterp.h" |
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121 | #include "acnamesp.h" |
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122 | #include "acevents.h" |
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123 | |||
124 | |||
125 | #define _COMPONENT ACPI_UTILITIES |
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126 | ACPI_MODULE_NAME ("utdelete") |
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127 | |||
128 | /* Local prototypes */ |
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129 | |||
130 | static void |
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131 | AcpiUtDeleteInternalObj ( |
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132 | ACPI_OPERAND_OBJECT *Object); |
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133 | |||
134 | static void |
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135 | AcpiUtUpdateRefCount ( |
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136 | ACPI_OPERAND_OBJECT *Object, |
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137 | UINT32 Action); |
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138 | |||
139 | |||
140 | /******************************************************************************* |
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141 | * |
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142 | * FUNCTION: AcpiUtDeleteInternalObj |
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143 | * |
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144 | * PARAMETERS: Object - Object to be deleted |
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145 | * |
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146 | * RETURN: None |
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147 | * |
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148 | * DESCRIPTION: Low level object deletion, after reference counts have been |
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149 | * updated (All reference counts, including sub-objects!) |
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150 | * |
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151 | ******************************************************************************/ |
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152 | |||
153 | static void |
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154 | AcpiUtDeleteInternalObj ( |
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155 | ACPI_OPERAND_OBJECT *Object) |
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156 | { |
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157 | void *ObjPointer = NULL; |
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158 | ACPI_OPERAND_OBJECT *HandlerDesc; |
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159 | ACPI_OPERAND_OBJECT *SecondDesc; |
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160 | ACPI_OPERAND_OBJECT *NextDesc; |
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161 | ACPI_OPERAND_OBJECT **LastObjPtr; |
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162 | |||
163 | |||
164 | ACPI_FUNCTION_TRACE_PTR (UtDeleteInternalObj, Object); |
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165 | |||
166 | |||
167 | if (!Object) |
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168 | { |
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169 | return_VOID; |
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170 | } |
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171 | |||
172 | /* |
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173 | * Must delete or free any pointers within the object that are not |
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174 | * actual ACPI objects (for example, a raw buffer pointer). |
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175 | */ |
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176 | switch (Object->Common.Type) |
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177 | { |
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178 | case ACPI_TYPE_STRING: |
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179 | |||
180 | ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "**** String %p, ptr %p\n", |
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181 | Object, Object->String.Pointer)); |
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182 | |||
183 | /* Free the actual string buffer */ |
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184 | |||
185 | if (!(Object->Common.Flags & AOPOBJ_STATIC_POINTER)) |
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186 | { |
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187 | /* But only if it is NOT a pointer into an ACPI table */ |
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188 | |||
189 | ObjPointer = Object->String.Pointer; |
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190 | } |
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191 | break; |
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192 | |||
193 | |||
194 | case ACPI_TYPE_BUFFER: |
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195 | |||
196 | ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "**** Buffer %p, ptr %p\n", |
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197 | Object, Object->Buffer.Pointer)); |
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198 | |||
199 | /* Free the actual buffer */ |
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200 | |||
201 | if (!(Object->Common.Flags & AOPOBJ_STATIC_POINTER)) |
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202 | { |
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203 | /* But only if it is NOT a pointer into an ACPI table */ |
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204 | |||
205 | ObjPointer = Object->Buffer.Pointer; |
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206 | } |
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207 | break; |
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208 | |||
209 | |||
210 | case ACPI_TYPE_PACKAGE: |
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211 | |||
212 | ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, " **** Package of count %X\n", |
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213 | Object->Package.Count)); |
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214 | |||
215 | /* |
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216 | * Elements of the package are not handled here, they are deleted |
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217 | * separately |
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218 | */ |
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219 | |||
220 | /* Free the (variable length) element pointer array */ |
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221 | |||
222 | ObjPointer = Object->Package.Elements; |
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223 | break; |
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224 | |||
225 | |||
226 | /* |
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227 | * These objects have a possible list of notify handlers. |
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228 | * Device object also may have a GPE block. |
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229 | */ |
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230 | case ACPI_TYPE_DEVICE: |
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231 | |||
232 | if (Object->Device.GpeBlock) |
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233 | { |
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234 | (void) AcpiEvDeleteGpeBlock (Object->Device.GpeBlock); |
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235 | } |
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236 | |||
237 | /*lint -fallthrough */ |
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238 | |||
239 | case ACPI_TYPE_PROCESSOR: |
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240 | case ACPI_TYPE_THERMAL: |
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241 | |||
242 | /* Walk the notify handler list for this object */ |
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243 | |||
244 | HandlerDesc = Object->CommonNotify.Handler; |
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245 | while (HandlerDesc) |
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246 | { |
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247 | NextDesc = HandlerDesc->AddressSpace.Next; |
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248 | AcpiUtRemoveReference (HandlerDesc); |
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249 | HandlerDesc = NextDesc; |
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250 | } |
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251 | break; |
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252 | |||
253 | |||
254 | case ACPI_TYPE_MUTEX: |
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255 | |||
256 | ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, |
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257 | "***** Mutex %p, OS Mutex %p\n", |
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258 | Object, Object->Mutex.OsMutex)); |
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259 | |||
260 | if (Object == AcpiGbl_GlobalLockMutex) |
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261 | { |
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262 | /* Global Lock has extra semaphore */ |
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263 | |||
264 | (void) AcpiOsDeleteSemaphore (AcpiGbl_GlobalLockSemaphore); |
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265 | AcpiGbl_GlobalLockSemaphore = NULL; |
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266 | |||
267 | AcpiOsDeleteMutex (Object->Mutex.OsMutex); |
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268 | AcpiGbl_GlobalLockMutex = NULL; |
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269 | } |
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270 | else |
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271 | { |
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272 | AcpiExUnlinkMutex (Object); |
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273 | AcpiOsDeleteMutex (Object->Mutex.OsMutex); |
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274 | } |
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275 | break; |
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276 | |||
277 | |||
278 | case ACPI_TYPE_EVENT: |
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279 | |||
280 | ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, |
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281 | "***** Event %p, OS Semaphore %p\n", |
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282 | Object, Object->Event.OsSemaphore)); |
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283 | |||
284 | (void) AcpiOsDeleteSemaphore (Object->Event.OsSemaphore); |
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285 | Object->Event.OsSemaphore = NULL; |
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286 | break; |
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287 | |||
288 | |||
289 | case ACPI_TYPE_METHOD: |
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290 | |||
291 | ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, |
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292 | "***** Method %p\n", Object)); |
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293 | |||
294 | /* Delete the method mutex if it exists */ |
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295 | |||
296 | if (Object->Method.Mutex) |
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297 | { |
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298 | AcpiOsDeleteMutex (Object->Method.Mutex->Mutex.OsMutex); |
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299 | AcpiUtDeleteObjectDesc (Object->Method.Mutex); |
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300 | Object->Method.Mutex = NULL; |
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301 | } |
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302 | break; |
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303 | |||
304 | |||
305 | case ACPI_TYPE_REGION: |
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306 | |||
307 | ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, |
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308 | "***** Region %p\n", Object)); |
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309 | |||
310 | SecondDesc = AcpiNsGetSecondaryObject (Object); |
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311 | if (SecondDesc) |
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312 | { |
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313 | /* |
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314 | * Free the RegionContext if and only if the handler is one of the |
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315 | * default handlers -- and therefore, we created the context object |
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316 | * locally, it was not created by an external caller. |
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317 | */ |
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318 | HandlerDesc = Object->Region.Handler; |
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319 | if (HandlerDesc) |
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320 | { |
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321 | NextDesc = HandlerDesc->AddressSpace.RegionList; |
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322 | LastObjPtr = &HandlerDesc->AddressSpace.RegionList; |
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323 | |||
324 | /* Remove the region object from the handler's list */ |
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325 | |||
326 | while (NextDesc) |
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327 | { |
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328 | if (NextDesc == Object) |
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329 | { |
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330 | *LastObjPtr = NextDesc->Region.Next; |
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331 | break; |
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332 | } |
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333 | |||
334 | /* Walk the linked list of handler */ |
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335 | |||
336 | LastObjPtr = &NextDesc->Region.Next; |
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337 | NextDesc = NextDesc->Region.Next; |
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338 | } |
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339 | |||
340 | if (HandlerDesc->AddressSpace.HandlerFlags & |
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341 | ACPI_ADDR_HANDLER_DEFAULT_INSTALLED) |
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342 | { |
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343 | /* Deactivate region and free region context */ |
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344 | |||
345 | if (HandlerDesc->AddressSpace.Setup) |
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346 | { |
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347 | (void) HandlerDesc->AddressSpace.Setup (Object, |
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348 | ACPI_REGION_DEACTIVATE, |
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349 | HandlerDesc->AddressSpace.Context, |
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350 | &SecondDesc->Extra.RegionContext); |
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351 | } |
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352 | } |
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353 | |||
354 | AcpiUtRemoveReference (HandlerDesc); |
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355 | } |
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356 | |||
357 | /* Now we can free the Extra object */ |
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358 | |||
359 | AcpiUtDeleteObjectDesc (SecondDesc); |
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360 | } |
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361 | break; |
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362 | |||
363 | |||
364 | case ACPI_TYPE_BUFFER_FIELD: |
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365 | |||
366 | ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, |
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367 | "***** Buffer Field %p\n", Object)); |
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368 | |||
369 | SecondDesc = AcpiNsGetSecondaryObject (Object); |
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370 | if (SecondDesc) |
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371 | { |
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372 | AcpiUtDeleteObjectDesc (SecondDesc); |
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373 | } |
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374 | break; |
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375 | |||
376 | |||
377 | case ACPI_TYPE_LOCAL_BANK_FIELD: |
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378 | |||
379 | ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, |
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380 | "***** Bank Field %p\n", Object)); |
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381 | |||
382 | SecondDesc = AcpiNsGetSecondaryObject (Object); |
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383 | if (SecondDesc) |
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384 | { |
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385 | AcpiUtDeleteObjectDesc (SecondDesc); |
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386 | } |
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387 | break; |
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388 | |||
389 | |||
390 | default: |
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391 | break; |
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392 | } |
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393 | |||
394 | /* Free any allocated memory (pointer within the object) found above */ |
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395 | |||
396 | if (ObjPointer) |
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397 | { |
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398 | ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "Deleting Object Subptr %p\n", |
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399 | ObjPointer)); |
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400 | ACPI_FREE (ObjPointer); |
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401 | } |
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402 | |||
403 | /* Now the object can be safely deleted */ |
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404 | |||
405 | ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "Deleting Object %p [%s]\n", |
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406 | Object, AcpiUtGetObjectTypeName (Object))); |
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407 | |||
408 | AcpiUtDeleteObjectDesc (Object); |
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409 | return_VOID; |
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410 | } |
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411 | |||
412 | |||
413 | /******************************************************************************* |
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414 | * |
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415 | * FUNCTION: AcpiUtDeleteInternalObjectList |
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416 | * |
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417 | * PARAMETERS: ObjList - Pointer to the list to be deleted |
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418 | * |
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419 | * RETURN: None |
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420 | * |
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421 | * DESCRIPTION: This function deletes an internal object list, including both |
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422 | * simple objects and package objects |
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423 | * |
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424 | ******************************************************************************/ |
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425 | |||
426 | void |
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427 | AcpiUtDeleteInternalObjectList ( |
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428 | ACPI_OPERAND_OBJECT **ObjList) |
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429 | { |
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430 | ACPI_OPERAND_OBJECT **InternalObj; |
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431 | |||
432 | |||
433 | ACPI_FUNCTION_TRACE (UtDeleteInternalObjectList); |
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434 | |||
435 | |||
436 | /* Walk the null-terminated internal list */ |
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437 | |||
438 | for (InternalObj = ObjList; *InternalObj; InternalObj++) |
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439 | { |
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440 | AcpiUtRemoveReference (*InternalObj); |
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441 | } |
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442 | |||
443 | /* Free the combined parameter pointer list and object array */ |
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444 | |||
445 | ACPI_FREE (ObjList); |
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446 | return_VOID; |
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447 | } |
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448 | |||
449 | |||
450 | /******************************************************************************* |
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451 | * |
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452 | * FUNCTION: AcpiUtUpdateRefCount |
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453 | * |
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454 | * PARAMETERS: Object - Object whose ref count is to be updated |
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455 | * Action - What to do |
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456 | * |
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457 | * RETURN: New ref count |
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458 | * |
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459 | * DESCRIPTION: Modify the ref count and return it. |
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460 | * |
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461 | ******************************************************************************/ |
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462 | |||
463 | static void |
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464 | AcpiUtUpdateRefCount ( |
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465 | ACPI_OPERAND_OBJECT *Object, |
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466 | UINT32 Action) |
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467 | { |
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468 | UINT16 Count; |
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469 | UINT16 NewCount; |
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470 | |||
471 | |||
472 | ACPI_FUNCTION_NAME (UtUpdateRefCount); |
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473 | |||
474 | |||
475 | if (!Object) |
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476 | { |
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477 | return; |
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478 | } |
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479 | |||
480 | Count = Object->Common.ReferenceCount; |
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481 | NewCount = Count; |
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482 | |||
483 | /* |
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484 | * Perform the reference count action (increment, decrement, force delete) |
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485 | */ |
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486 | switch (Action) |
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487 | { |
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488 | case REF_INCREMENT: |
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489 | |||
490 | NewCount++; |
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491 | Object->Common.ReferenceCount = NewCount; |
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492 | |||
493 | ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, |
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494 | "Obj %p Refs=%X, [Incremented]\n", |
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495 | Object, NewCount)); |
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496 | break; |
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497 | |||
498 | case REF_DECREMENT: |
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499 | |||
500 | if (Count < 1) |
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501 | { |
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502 | ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, |
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503 | "Obj %p Refs=%X, can't decrement! (Set to 0)\n", |
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504 | Object, NewCount)); |
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505 | |||
506 | NewCount = 0; |
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507 | } |
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508 | else |
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509 | { |
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510 | NewCount--; |
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511 | |||
512 | ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, |
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513 | "Obj %p Refs=%X, [Decremented]\n", |
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514 | Object, NewCount)); |
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515 | } |
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516 | |||
517 | if (Object->Common.Type == ACPI_TYPE_METHOD) |
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518 | { |
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519 | ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, |
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520 | "Method Obj %p Refs=%X, [Decremented]\n", Object, NewCount)); |
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521 | } |
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522 | |||
523 | Object->Common.ReferenceCount = NewCount; |
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524 | if (NewCount == 0) |
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525 | { |
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526 | AcpiUtDeleteInternalObj (Object); |
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527 | } |
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528 | break; |
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529 | |||
530 | case REF_FORCE_DELETE: |
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531 | |||
532 | ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, |
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533 | "Obj %p Refs=%X, Force delete! (Set to 0)\n", Object, Count)); |
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534 | |||
535 | NewCount = 0; |
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536 | Object->Common.ReferenceCount = NewCount; |
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537 | AcpiUtDeleteInternalObj (Object); |
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538 | break; |
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539 | |||
540 | default: |
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541 | |||
542 | ACPI_ERROR ((AE_INFO, "Unknown action (0x%X)", Action)); |
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543 | break; |
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544 | } |
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545 | |||
546 | /* |
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547 | * Sanity check the reference count, for debug purposes only. |
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548 | * (A deleted object will have a huge reference count) |
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549 | */ |
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550 | if (Count > ACPI_MAX_REFERENCE_COUNT) |
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551 | { |
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552 | ACPI_WARNING ((AE_INFO, |
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553 | "Large Reference Count (0x%X) in object %p", Count, Object)); |
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554 | } |
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555 | } |
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556 | |||
557 | |||
558 | /******************************************************************************* |
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559 | * |
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560 | * FUNCTION: AcpiUtUpdateObjectReference |
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561 | * |
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562 | * PARAMETERS: Object - Increment ref count for this object |
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563 | * and all sub-objects |
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564 | * Action - Either REF_INCREMENT or REF_DECREMENT or |
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565 | * REF_FORCE_DELETE |
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566 | * |
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567 | * RETURN: Status |
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568 | * |
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569 | * DESCRIPTION: Increment the object reference count |
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570 | * |
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571 | * Object references are incremented when: |
||
572 | * 1) An object is attached to a Node (namespace object) |
||
573 | * 2) An object is copied (all subobjects must be incremented) |
||
574 | * |
||
575 | * Object references are decremented when: |
||
576 | * 1) An object is detached from an Node |
||
577 | * |
||
578 | ******************************************************************************/ |
||
579 | |||
580 | ACPI_STATUS |
||
581 | AcpiUtUpdateObjectReference ( |
||
582 | ACPI_OPERAND_OBJECT *Object, |
||
583 | UINT16 Action) |
||
584 | { |
||
585 | ACPI_STATUS Status = AE_OK; |
||
586 | ACPI_GENERIC_STATE *StateList = NULL; |
||
587 | ACPI_OPERAND_OBJECT *NextObject = NULL; |
||
588 | ACPI_GENERIC_STATE *State; |
||
589 | UINT32 i; |
||
590 | |||
591 | |||
592 | ACPI_FUNCTION_TRACE_PTR (UtUpdateObjectReference, Object); |
||
593 | |||
594 | |||
595 | while (Object) |
||
596 | { |
||
597 | /* Make sure that this isn't a namespace handle */ |
||
598 | |||
599 | if (ACPI_GET_DESCRIPTOR_TYPE (Object) == ACPI_DESC_TYPE_NAMED) |
||
600 | { |
||
601 | ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, |
||
602 | "Object %p is NS handle\n", Object)); |
||
603 | return_ACPI_STATUS (AE_OK); |
||
604 | } |
||
605 | |||
606 | /* |
||
607 | * All sub-objects must have their reference count incremented also. |
||
608 | * Different object types have different subobjects. |
||
609 | */ |
||
610 | switch (Object->Common.Type) |
||
611 | { |
||
612 | case ACPI_TYPE_DEVICE: |
||
613 | case ACPI_TYPE_PROCESSOR: |
||
614 | case ACPI_TYPE_POWER: |
||
615 | case ACPI_TYPE_THERMAL: |
||
616 | |||
617 | /* Update the notify objects for these types (if present) */ |
||
618 | |||
619 | AcpiUtUpdateRefCount (Object->CommonNotify.SystemNotify, Action); |
||
620 | AcpiUtUpdateRefCount (Object->CommonNotify.DeviceNotify, Action); |
||
621 | break; |
||
622 | |||
623 | case ACPI_TYPE_PACKAGE: |
||
624 | /* |
||
625 | * We must update all the sub-objects of the package, |
||
626 | * each of whom may have their own sub-objects. |
||
627 | */ |
||
628 | for (i = 0; i < Object->Package.Count; i++) |
||
629 | { |
||
630 | /* |
||
631 | * Push each element onto the stack for later processing. |
||
632 | * Note: There can be null elements within the package, |
||
633 | * these are simply ignored |
||
634 | */ |
||
635 | Status = AcpiUtCreateUpdateStateAndPush ( |
||
636 | Object->Package.Elements[i], Action, &StateList); |
||
637 | if (ACPI_FAILURE (Status)) |
||
638 | { |
||
639 | goto ErrorExit; |
||
640 | } |
||
641 | } |
||
642 | break; |
||
643 | |||
644 | case ACPI_TYPE_BUFFER_FIELD: |
||
645 | |||
646 | NextObject = Object->BufferField.BufferObj; |
||
647 | break; |
||
648 | |||
649 | case ACPI_TYPE_LOCAL_REGION_FIELD: |
||
650 | |||
651 | NextObject = Object->Field.RegionObj; |
||
652 | break; |
||
653 | |||
654 | case ACPI_TYPE_LOCAL_BANK_FIELD: |
||
655 | |||
656 | NextObject = Object->BankField.BankObj; |
||
657 | Status = AcpiUtCreateUpdateStateAndPush ( |
||
658 | Object->BankField.RegionObj, Action, &StateList); |
||
659 | if (ACPI_FAILURE (Status)) |
||
660 | { |
||
661 | goto ErrorExit; |
||
662 | } |
||
663 | break; |
||
664 | |||
665 | case ACPI_TYPE_LOCAL_INDEX_FIELD: |
||
666 | |||
667 | NextObject = Object->IndexField.IndexObj; |
||
668 | Status = AcpiUtCreateUpdateStateAndPush ( |
||
669 | Object->IndexField.DataObj, Action, &StateList); |
||
670 | if (ACPI_FAILURE (Status)) |
||
671 | { |
||
672 | goto ErrorExit; |
||
673 | } |
||
674 | break; |
||
675 | |||
676 | case ACPI_TYPE_LOCAL_REFERENCE: |
||
677 | /* |
||
678 | * The target of an Index (a package, string, or buffer) or a named |
||
679 | * reference must track changes to the ref count of the index or |
||
680 | * target object. |
||
681 | */ |
||
682 | if ((Object->Reference.Class == ACPI_REFCLASS_INDEX) || |
||
683 | (Object->Reference.Class== ACPI_REFCLASS_NAME)) |
||
684 | { |
||
685 | NextObject = Object->Reference.Object; |
||
686 | } |
||
687 | break; |
||
688 | |||
689 | case ACPI_TYPE_REGION: |
||
690 | default: |
||
691 | break; /* No subobjects for all other types */ |
||
692 | } |
||
693 | |||
694 | /* |
||
695 | * Now we can update the count in the main object. This can only |
||
696 | * happen after we update the sub-objects in case this causes the |
||
697 | * main object to be deleted. |
||
698 | */ |
||
699 | AcpiUtUpdateRefCount (Object, Action); |
||
700 | Object = NULL; |
||
701 | |||
702 | /* Move on to the next object to be updated */ |
||
703 | |||
704 | if (NextObject) |
||
705 | { |
||
706 | Object = NextObject; |
||
707 | NextObject = NULL; |
||
708 | } |
||
709 | else if (StateList) |
||
710 | { |
||
711 | State = AcpiUtPopGenericState (&StateList); |
||
712 | Object = State->Update.Object; |
||
713 | AcpiUtDeleteGenericState (State); |
||
714 | } |
||
715 | } |
||
716 | |||
717 | return_ACPI_STATUS (AE_OK); |
||
718 | |||
719 | |||
720 | ErrorExit: |
||
721 | |||
722 | ACPI_EXCEPTION ((AE_INFO, Status, |
||
723 | "Could not update object reference count")); |
||
724 | |||
725 | /* Free any stacked Update State objects */ |
||
726 | |||
727 | while (StateList) |
||
728 | { |
||
729 | State = AcpiUtPopGenericState (&StateList); |
||
730 | AcpiUtDeleteGenericState (State); |
||
731 | } |
||
732 | |||
733 | return_ACPI_STATUS (Status); |
||
734 | } |
||
735 | |||
736 | |||
737 | /******************************************************************************* |
||
738 | * |
||
739 | * FUNCTION: AcpiUtAddReference |
||
740 | * |
||
741 | * PARAMETERS: Object - Object whose reference count is to be |
||
742 | * incremented |
||
743 | * |
||
744 | * RETURN: None |
||
745 | * |
||
746 | * DESCRIPTION: Add one reference to an ACPI object |
||
747 | * |
||
748 | ******************************************************************************/ |
||
749 | |||
750 | void |
||
751 | AcpiUtAddReference ( |
||
752 | ACPI_OPERAND_OBJECT *Object) |
||
753 | { |
||
754 | |||
755 | ACPI_FUNCTION_TRACE_PTR (UtAddReference, Object); |
||
756 | |||
757 | |||
758 | /* Ensure that we have a valid object */ |
||
759 | |||
760 | if (!AcpiUtValidInternalObject (Object)) |
||
761 | { |
||
762 | return_VOID; |
||
763 | } |
||
764 | |||
765 | ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, |
||
766 | "Obj %p Current Refs=%X [To Be Incremented]\n", |
||
767 | Object, Object->Common.ReferenceCount)); |
||
768 | |||
769 | /* Increment the reference count */ |
||
770 | |||
771 | (void) AcpiUtUpdateObjectReference (Object, REF_INCREMENT); |
||
772 | return_VOID; |
||
773 | } |
||
774 | |||
775 | |||
776 | /******************************************************************************* |
||
777 | * |
||
778 | * FUNCTION: AcpiUtRemoveReference |
||
779 | * |
||
780 | * PARAMETERS: Object - Object whose ref count will be decremented |
||
781 | * |
||
782 | * RETURN: None |
||
783 | * |
||
784 | * DESCRIPTION: Decrement the reference count of an ACPI internal object |
||
785 | * |
||
786 | ******************************************************************************/ |
||
787 | |||
788 | void |
||
789 | AcpiUtRemoveReference ( |
||
790 | ACPI_OPERAND_OBJECT *Object) |
||
791 | { |
||
792 | |||
793 | ACPI_FUNCTION_TRACE_PTR (UtRemoveReference, Object); |
||
794 | |||
795 | |||
796 | /* |
||
797 | * Allow a NULL pointer to be passed in, just ignore it. This saves |
||
798 | * each caller from having to check. Also, ignore NS nodes. |
||
799 | * |
||
800 | */ |
||
801 | if (!Object || |
||
802 | (ACPI_GET_DESCRIPTOR_TYPE (Object) == ACPI_DESC_TYPE_NAMED)) |
||
803 | |||
804 | { |
||
805 | return_VOID; |
||
806 | } |
||
807 | |||
808 | /* Ensure that we have a valid object */ |
||
809 | |||
810 | if (!AcpiUtValidInternalObject (Object)) |
||
811 | { |
||
812 | return_VOID; |
||
813 | } |
||
814 | |||
815 | ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, |
||
816 | "Obj %p Current Refs=%X [To Be Decremented]\n", |
||
817 | Object, Object->Common.ReferenceCount)); |
||
818 | |||
819 | /* |
||
820 | * Decrement the reference count, and only actually delete the object |
||
821 | * if the reference count becomes 0. (Must also decrement the ref count |
||
822 | * of all subobjects!) |
||
823 | */ |
||
824 | (void) AcpiUtUpdateObjectReference (Object, REF_DECREMENT); |
||
825 | return_VOID; |
||
826 | }>> |
||
827 |