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1498 | serge | 1 | /****************************************************************************** |
2 | * |
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3 | * Module Name: evmisc - Miscellaneous event manager support functions |
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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 | #include "acpi.h" |
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117 | #include "accommon.h" |
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118 | #include "acevents.h" |
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119 | #include "acnamesp.h" |
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120 | |||
121 | #define _COMPONENT ACPI_EVENTS |
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122 | ACPI_MODULE_NAME ("evmisc") |
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123 | |||
124 | |||
125 | /* Local prototypes */ |
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126 | |||
127 | static void ACPI_SYSTEM_XFACE |
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128 | AcpiEvNotifyDispatch ( |
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129 | void *Context); |
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130 | |||
131 | |||
132 | /******************************************************************************* |
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133 | * |
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134 | * FUNCTION: AcpiEvIsNotifyObject |
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135 | * |
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136 | * PARAMETERS: Node - Node to check |
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137 | * |
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138 | * RETURN: TRUE if notifies allowed on this object |
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139 | * |
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140 | * DESCRIPTION: Check type of node for a object that supports notifies. |
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141 | * |
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142 | * TBD: This could be replaced by a flag bit in the node. |
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143 | * |
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144 | ******************************************************************************/ |
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145 | |||
146 | BOOLEAN |
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147 | AcpiEvIsNotifyObject ( |
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148 | ACPI_NAMESPACE_NODE *Node) |
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149 | { |
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150 | switch (Node->Type) |
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151 | { |
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152 | case ACPI_TYPE_DEVICE: |
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153 | case ACPI_TYPE_PROCESSOR: |
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154 | case ACPI_TYPE_THERMAL: |
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155 | /* |
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156 | * These are the ONLY objects that can receive ACPI notifications |
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157 | */ |
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158 | return (TRUE); |
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159 | |||
160 | default: |
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161 | return (FALSE); |
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162 | } |
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163 | } |
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164 | |||
165 | |||
166 | /******************************************************************************* |
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167 | * |
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168 | * FUNCTION: AcpiEvQueueNotifyRequest |
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169 | * |
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170 | * PARAMETERS: Node - NS node for the notified object |
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171 | * NotifyValue - Value from the Notify() request |
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172 | * |
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173 | * RETURN: Status |
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174 | * |
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175 | * DESCRIPTION: Dispatch a device notification event to a previously |
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176 | * installed handler. |
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177 | * |
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178 | ******************************************************************************/ |
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179 | |||
180 | ACPI_STATUS |
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181 | AcpiEvQueueNotifyRequest ( |
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182 | ACPI_NAMESPACE_NODE *Node, |
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183 | UINT32 NotifyValue) |
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184 | { |
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185 | ACPI_OPERAND_OBJECT *ObjDesc; |
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186 | ACPI_OPERAND_OBJECT *HandlerObj = NULL; |
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187 | ACPI_GENERIC_STATE *NotifyInfo; |
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188 | ACPI_STATUS Status = AE_OK; |
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189 | |||
190 | |||
191 | ACPI_FUNCTION_NAME (EvQueueNotifyRequest); |
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192 | |||
193 | |||
194 | /* |
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195 | * For value 3 (Ejection Request), some device method may need to be run. |
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196 | * For value 2 (Device Wake) if _PRW exists, the _PS0 method may need |
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197 | * to be run. |
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198 | * For value 0x80 (Status Change) on the power button or sleep button, |
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199 | * initiate soft-off or sleep operation? |
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200 | */ |
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201 | ACPI_DEBUG_PRINT ((ACPI_DB_INFO, |
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202 | "Dispatching Notify on [%4.4s] Node %p Value 0x%2.2X (%s)\n", |
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203 | AcpiUtGetNodeName (Node), Node, NotifyValue, |
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204 | AcpiUtGetNotifyName (NotifyValue))); |
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205 | |||
206 | /* Get the notify object attached to the NS Node */ |
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207 | |||
208 | ObjDesc = AcpiNsGetAttachedObject (Node); |
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209 | if (ObjDesc) |
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210 | { |
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211 | /* We have the notify object, Get the right handler */ |
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212 | |||
213 | switch (Node->Type) |
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214 | { |
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215 | /* Notify allowed only on these types */ |
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216 | |||
217 | case ACPI_TYPE_DEVICE: |
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218 | case ACPI_TYPE_THERMAL: |
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219 | case ACPI_TYPE_PROCESSOR: |
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220 | |||
221 | if (NotifyValue <= ACPI_MAX_SYS_NOTIFY) |
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222 | { |
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223 | HandlerObj = ObjDesc->CommonNotify.SystemNotify; |
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224 | } |
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225 | else |
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226 | { |
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227 | HandlerObj = ObjDesc->CommonNotify.DeviceNotify; |
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228 | } |
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229 | break; |
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230 | |||
231 | default: |
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232 | |||
233 | /* All other types are not supported */ |
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234 | |||
235 | return (AE_TYPE); |
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236 | } |
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237 | } |
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238 | |||
239 | /* |
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240 | * If there is any handler to run, schedule the dispatcher. |
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241 | * Check for: |
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242 | * 1) Global system notify handler |
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243 | * 2) Global device notify handler |
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244 | * 3) Per-device notify handler |
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245 | */ |
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246 | if ((AcpiGbl_SystemNotify.Handler && |
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247 | (NotifyValue <= ACPI_MAX_SYS_NOTIFY)) || |
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248 | (AcpiGbl_DeviceNotify.Handler && |
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249 | (NotifyValue > ACPI_MAX_SYS_NOTIFY)) || |
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250 | HandlerObj) |
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251 | { |
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252 | NotifyInfo = AcpiUtCreateGenericState (); |
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253 | if (!NotifyInfo) |
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254 | { |
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255 | return (AE_NO_MEMORY); |
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256 | } |
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257 | |||
258 | if (!HandlerObj) |
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259 | { |
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260 | ACPI_DEBUG_PRINT ((ACPI_DB_INFO, |
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261 | "Executing system notify handler for Notify (%4.4s, %X) " |
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262 | "node %p\n", |
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263 | AcpiUtGetNodeName (Node), NotifyValue, Node)); |
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264 | } |
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265 | |||
266 | NotifyInfo->Common.DescriptorType = ACPI_DESC_TYPE_STATE_NOTIFY; |
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267 | NotifyInfo->Notify.Node = Node; |
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268 | NotifyInfo->Notify.Value = (UINT16) NotifyValue; |
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269 | NotifyInfo->Notify.HandlerObj = HandlerObj; |
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270 | |||
271 | Status = AcpiOsExecute ( |
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272 | OSL_NOTIFY_HANDLER, AcpiEvNotifyDispatch, NotifyInfo); |
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273 | if (ACPI_FAILURE (Status)) |
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274 | { |
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275 | AcpiUtDeleteGenericState (NotifyInfo); |
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276 | } |
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277 | } |
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278 | else |
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279 | { |
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280 | /* There is no notify handler (per-device or system) for this device */ |
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281 | |||
282 | ACPI_DEBUG_PRINT ((ACPI_DB_INFO, |
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283 | "No notify handler for Notify (%4.4s, %X) node %p\n", |
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284 | AcpiUtGetNodeName (Node), NotifyValue, Node)); |
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285 | } |
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286 | |||
287 | return (Status); |
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288 | } |
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289 | |||
290 | |||
291 | /******************************************************************************* |
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292 | * |
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293 | * FUNCTION: AcpiEvNotifyDispatch |
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294 | * |
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295 | * PARAMETERS: Context - To be passed to the notify handler |
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296 | * |
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297 | * RETURN: None. |
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298 | * |
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299 | * DESCRIPTION: Dispatch a device notification event to a previously |
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300 | * installed handler. |
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301 | * |
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302 | ******************************************************************************/ |
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303 | |||
304 | static void ACPI_SYSTEM_XFACE |
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305 | AcpiEvNotifyDispatch ( |
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306 | void *Context) |
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307 | { |
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308 | ACPI_GENERIC_STATE *NotifyInfo = (ACPI_GENERIC_STATE *) Context; |
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309 | ACPI_NOTIFY_HANDLER GlobalHandler = NULL; |
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310 | void *GlobalContext = NULL; |
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311 | ACPI_OPERAND_OBJECT *HandlerObj; |
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312 | |||
313 | |||
314 | ACPI_FUNCTION_ENTRY (); |
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315 | |||
316 | |||
317 | /* |
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318 | * We will invoke a global notify handler if installed. This is done |
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319 | * _before_ we invoke the per-device handler attached to the device. |
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320 | */ |
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321 | if (NotifyInfo->Notify.Value <= ACPI_MAX_SYS_NOTIFY) |
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322 | { |
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323 | /* Global system notification handler */ |
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324 | |||
325 | if (AcpiGbl_SystemNotify.Handler) |
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326 | { |
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327 | GlobalHandler = AcpiGbl_SystemNotify.Handler; |
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328 | GlobalContext = AcpiGbl_SystemNotify.Context; |
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329 | } |
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330 | } |
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331 | else |
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332 | { |
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333 | /* Global driver notification handler */ |
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334 | |||
335 | if (AcpiGbl_DeviceNotify.Handler) |
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336 | { |
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337 | GlobalHandler = AcpiGbl_DeviceNotify.Handler; |
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338 | GlobalContext = AcpiGbl_DeviceNotify.Context; |
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339 | } |
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340 | } |
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341 | |||
342 | /* Invoke the system handler first, if present */ |
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343 | |||
344 | if (GlobalHandler) |
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345 | { |
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346 | GlobalHandler (NotifyInfo->Notify.Node, NotifyInfo->Notify.Value, |
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347 | GlobalContext); |
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348 | } |
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349 | |||
350 | /* Now invoke the per-device handler, if present */ |
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351 | |||
352 | HandlerObj = NotifyInfo->Notify.HandlerObj; |
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353 | if (HandlerObj) |
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354 | { |
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355 | HandlerObj->Notify.Handler (NotifyInfo->Notify.Node, |
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356 | NotifyInfo->Notify.Value, |
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357 | HandlerObj->Notify.Context); |
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358 | } |
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359 | |||
360 | /* All done with the info object */ |
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361 | |||
362 | AcpiUtDeleteGenericState (NotifyInfo); |
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363 | } |
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364 | |||
365 | |||
366 | /****************************************************************************** |
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367 | * |
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368 | * FUNCTION: AcpiEvTerminate |
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369 | * |
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370 | * PARAMETERS: none |
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371 | * |
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372 | * RETURN: none |
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373 | * |
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374 | * DESCRIPTION: Disable events and free memory allocated for table storage. |
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375 | * |
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376 | ******************************************************************************/ |
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377 | |||
378 | void |
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379 | AcpiEvTerminate ( |
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380 | void) |
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381 | { |
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382 | UINT32 i; |
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383 | ACPI_STATUS Status; |
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384 | |||
385 | |||
386 | ACPI_FUNCTION_TRACE (EvTerminate); |
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387 | |||
388 | |||
389 | if (AcpiGbl_EventsInitialized) |
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390 | { |
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391 | /* |
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392 | * Disable all event-related functionality. In all cases, on error, |
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393 | * print a message but obviously we don't abort. |
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394 | */ |
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395 | |||
396 | /* Disable all fixed events */ |
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397 | |||
398 | for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) |
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399 | { |
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400 | Status = AcpiDisableEvent (i, 0); |
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401 | if (ACPI_FAILURE (Status)) |
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402 | { |
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403 | ACPI_ERROR ((AE_INFO, |
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404 | "Could not disable fixed event %u", (UINT32) i)); |
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405 | } |
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406 | } |
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407 | |||
408 | /* Disable all GPEs in all GPE blocks */ |
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409 | |||
410 | Status = AcpiEvWalkGpeList (AcpiHwDisableGpeBlock, NULL); |
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411 | |||
412 | /* Remove SCI handler */ |
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413 | |||
414 | Status = AcpiEvRemoveSciHandler (); |
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415 | if (ACPI_FAILURE(Status)) |
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416 | { |
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417 | ACPI_ERROR ((AE_INFO, |
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418 | "Could not remove SCI handler")); |
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419 | } |
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420 | |||
421 | Status = AcpiEvRemoveGlobalLockHandler (); |
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422 | if (ACPI_FAILURE(Status)) |
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423 | { |
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424 | ACPI_ERROR ((AE_INFO, |
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425 | "Could not remove Global Lock handler")); |
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426 | } |
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427 | } |
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428 | |||
429 | /* Deallocate all handler objects installed within GPE info structs */ |
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430 | |||
431 | Status = AcpiEvWalkGpeList (AcpiEvDeleteGpeHandlers, NULL); |
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432 | |||
433 | /* Return to original mode if necessary */ |
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434 | |||
435 | if (AcpiGbl_OriginalMode == ACPI_SYS_MODE_LEGACY) |
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436 | { |
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437 | Status = AcpiDisable (); |
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438 | if (ACPI_FAILURE (Status)) |
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439 | { |
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440 | ACPI_WARNING ((AE_INFO, "AcpiDisable failed")); |
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441 | } |
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442 | } |
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443 | return_VOID; |
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444 | }>=>=>=> |