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1498 | serge | 1 | /****************************************************************************** |
2 | * |
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3 | * Module Name: evxfevnt - External Interfaces, ACPI event disable/enable |
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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 | |||
117 | #define __EVXFEVNT_C__ |
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118 | |||
119 | #include "acpi.h" |
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120 | #include "accommon.h" |
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121 | #include "acevents.h" |
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122 | #include "acnamesp.h" |
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123 | #include "actables.h" |
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124 | |||
125 | #define _COMPONENT ACPI_EVENTS |
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126 | ACPI_MODULE_NAME ("evxfevnt") |
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127 | |||
128 | /* Local prototypes */ |
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129 | |||
130 | static ACPI_STATUS |
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131 | AcpiEvGetGpeDevice ( |
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132 | ACPI_GPE_XRUPT_INFO *GpeXruptInfo, |
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133 | ACPI_GPE_BLOCK_INFO *GpeBlock, |
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134 | void *Context); |
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135 | |||
136 | |||
137 | /******************************************************************************* |
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138 | * |
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139 | * FUNCTION: AcpiEnable |
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140 | * |
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141 | * PARAMETERS: None |
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142 | * |
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143 | * RETURN: Status |
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144 | * |
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145 | * DESCRIPTION: Transfers the system into ACPI mode. |
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146 | * |
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147 | ******************************************************************************/ |
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148 | |||
149 | ACPI_STATUS |
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150 | AcpiEnable ( |
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151 | void) |
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152 | { |
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153 | ACPI_STATUS Status = AE_OK; |
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154 | |||
155 | |||
156 | ACPI_FUNCTION_TRACE (AcpiEnable); |
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157 | |||
158 | |||
159 | /* ACPI tables must be present */ |
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160 | |||
161 | if (!AcpiTbTablesLoaded ()) |
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162 | { |
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163 | return_ACPI_STATUS (AE_NO_ACPI_TABLES); |
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164 | } |
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165 | |||
166 | /* Check current mode */ |
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167 | |||
168 | if (AcpiHwGetMode() == ACPI_SYS_MODE_ACPI) |
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169 | { |
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170 | ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "System is already in ACPI mode\n")); |
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171 | } |
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172 | else |
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173 | { |
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174 | /* Transition to ACPI mode */ |
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175 | |||
176 | Status = AcpiHwSetMode (ACPI_SYS_MODE_ACPI); |
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177 | if (ACPI_FAILURE (Status)) |
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178 | { |
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179 | ACPI_ERROR ((AE_INFO, "Could not transition to ACPI mode")); |
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180 | return_ACPI_STATUS (Status); |
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181 | } |
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182 | |||
183 | ACPI_DEBUG_PRINT ((ACPI_DB_INIT, |
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184 | "Transition to ACPI mode successful\n")); |
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185 | } |
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186 | |||
187 | return_ACPI_STATUS (Status); |
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188 | } |
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189 | |||
190 | ACPI_EXPORT_SYMBOL (AcpiEnable) |
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191 | |||
192 | |||
193 | /******************************************************************************* |
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194 | * |
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195 | * FUNCTION: AcpiDisable |
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196 | * |
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197 | * PARAMETERS: None |
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198 | * |
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199 | * RETURN: Status |
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200 | * |
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201 | * DESCRIPTION: Transfers the system into LEGACY (non-ACPI) mode. |
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202 | * |
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203 | ******************************************************************************/ |
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204 | |||
205 | ACPI_STATUS |
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206 | AcpiDisable ( |
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207 | void) |
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208 | { |
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209 | ACPI_STATUS Status = AE_OK; |
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210 | |||
211 | |||
212 | ACPI_FUNCTION_TRACE (AcpiDisable); |
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213 | |||
214 | |||
215 | if (AcpiHwGetMode() == ACPI_SYS_MODE_LEGACY) |
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216 | { |
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217 | ACPI_DEBUG_PRINT ((ACPI_DB_INIT, |
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218 | "System is already in legacy (non-ACPI) mode\n")); |
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219 | } |
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220 | else |
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221 | { |
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222 | /* Transition to LEGACY mode */ |
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223 | |||
224 | Status = AcpiHwSetMode (ACPI_SYS_MODE_LEGACY); |
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225 | |||
226 | if (ACPI_FAILURE (Status)) |
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227 | { |
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228 | ACPI_ERROR ((AE_INFO, |
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229 | "Could not exit ACPI mode to legacy mode")); |
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230 | return_ACPI_STATUS (Status); |
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231 | } |
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232 | |||
233 | ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "ACPI mode disabled\n")); |
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234 | } |
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235 | |||
236 | return_ACPI_STATUS (Status); |
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237 | } |
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238 | |||
239 | ACPI_EXPORT_SYMBOL (AcpiDisable) |
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240 | |||
241 | |||
242 | /******************************************************************************* |
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243 | * |
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244 | * FUNCTION: AcpiEnableEvent |
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245 | * |
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246 | * PARAMETERS: Event - The fixed eventto be enabled |
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247 | * Flags - Reserved |
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248 | * |
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249 | * RETURN: Status |
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250 | * |
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251 | * DESCRIPTION: Enable an ACPI event (fixed) |
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252 | * |
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253 | ******************************************************************************/ |
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254 | |||
255 | ACPI_STATUS |
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256 | AcpiEnableEvent ( |
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257 | UINT32 Event, |
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258 | UINT32 Flags) |
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259 | { |
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260 | ACPI_STATUS Status = AE_OK; |
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261 | UINT32 Value; |
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262 | |||
263 | |||
264 | ACPI_FUNCTION_TRACE (AcpiEnableEvent); |
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265 | |||
266 | |||
267 | /* Decode the Fixed Event */ |
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268 | |||
269 | if (Event > ACPI_EVENT_MAX) |
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270 | { |
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271 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
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272 | } |
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273 | |||
274 | /* |
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275 | * Enable the requested fixed event (by writing a one to the enable |
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276 | * register bit) |
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277 | */ |
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278 | Status = AcpiWriteBitRegister ( |
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279 | AcpiGbl_FixedEventInfo[Event].EnableRegisterId, |
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280 | ACPI_ENABLE_EVENT); |
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281 | if (ACPI_FAILURE (Status)) |
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282 | { |
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283 | return_ACPI_STATUS (Status); |
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284 | } |
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285 | |||
286 | /* Make sure that the hardware responded */ |
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287 | |||
288 | Status = AcpiReadBitRegister ( |
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289 | AcpiGbl_FixedEventInfo[Event].EnableRegisterId, &Value); |
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290 | if (ACPI_FAILURE (Status)) |
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291 | { |
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292 | return_ACPI_STATUS (Status); |
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293 | } |
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294 | |||
295 | if (Value != 1) |
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296 | { |
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297 | ACPI_ERROR ((AE_INFO, |
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298 | "Could not enable %s event", AcpiUtGetEventName (Event))); |
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299 | return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE); |
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300 | } |
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301 | |||
302 | return_ACPI_STATUS (Status); |
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303 | } |
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304 | |||
305 | ACPI_EXPORT_SYMBOL (AcpiEnableEvent) |
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306 | |||
307 | |||
308 | /******************************************************************************* |
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309 | * |
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310 | * FUNCTION: AcpiEnableGpe |
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311 | * |
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312 | * PARAMETERS: GpeDevice - Parent GPE Device. NULL for GPE0/GPE1 |
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313 | * GpeNumber - GPE level within the GPE block |
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314 | * GpeType - ACPI_GPE_TYPE_RUNTIME or ACPI_GPE_TYPE_WAKE |
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315 | * or both |
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316 | * |
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317 | * RETURN: Status |
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318 | * |
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319 | * DESCRIPTION: Add a reference to a GPE. On the first reference, the GPE is |
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320 | * hardware-enabled (for runtime GPEs), or the GPE register mask |
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321 | * is updated (for wake GPEs). |
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322 | * |
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323 | ******************************************************************************/ |
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324 | |||
325 | ACPI_STATUS |
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326 | AcpiEnableGpe ( |
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327 | ACPI_HANDLE GpeDevice, |
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328 | UINT32 GpeNumber, |
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329 | UINT8 GpeType) |
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330 | { |
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331 | ACPI_STATUS Status = AE_OK; |
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332 | ACPI_GPE_EVENT_INFO *GpeEventInfo; |
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333 | ACPI_CPU_FLAGS Flags; |
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334 | |||
335 | |||
336 | ACPI_FUNCTION_TRACE (AcpiEnableGpe); |
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337 | |||
338 | |||
339 | /* Parameter validation */ |
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340 | |||
341 | if (!GpeType || (GpeType & ~ACPI_GPE_TYPE_WAKE_RUN)) |
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342 | { |
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343 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
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344 | } |
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345 | |||
346 | Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock); |
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347 | |||
348 | /* Ensure that we have a valid GPE number */ |
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349 | |||
350 | GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber); |
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351 | if (!GpeEventInfo) |
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352 | { |
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353 | Status = AE_BAD_PARAMETER; |
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354 | goto UnlockAndExit; |
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355 | } |
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356 | |||
357 | if (GpeType & ACPI_GPE_TYPE_RUNTIME) |
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358 | { |
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359 | if (GpeEventInfo->RuntimeCount == ACPI_UINT8_MAX) |
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360 | { |
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361 | Status = AE_LIMIT; /* Too many references */ |
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362 | goto UnlockAndExit; |
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363 | } |
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364 | |||
365 | GpeEventInfo->RuntimeCount++; |
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366 | if (GpeEventInfo->RuntimeCount == 1) |
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367 | { |
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368 | Status = AcpiEvEnableGpe (GpeEventInfo); |
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369 | if (ACPI_FAILURE (Status)) |
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370 | { |
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371 | GpeEventInfo->RuntimeCount--; |
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372 | goto UnlockAndExit; |
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373 | } |
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374 | } |
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375 | } |
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376 | |||
377 | if (GpeType & ACPI_GPE_TYPE_WAKE) |
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378 | { |
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379 | /* The GPE must have the ability to wake the system */ |
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380 | |||
381 | if (!(GpeEventInfo->Flags & ACPI_GPE_CAN_WAKE)) |
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382 | { |
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383 | Status = AE_TYPE; |
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384 | goto UnlockAndExit; |
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385 | } |
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386 | |||
387 | if (GpeEventInfo->WakeupCount == ACPI_UINT8_MAX) |
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388 | { |
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389 | Status = AE_LIMIT; /* Too many references */ |
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390 | goto UnlockAndExit; |
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391 | } |
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392 | |||
393 | /* |
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394 | * Update the enable mask on the first wakeup reference. Wake GPEs |
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395 | * are only hardware-enabled just before sleeping. |
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396 | */ |
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397 | GpeEventInfo->WakeupCount++; |
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398 | if (GpeEventInfo->WakeupCount == 1) |
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399 | { |
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400 | (void) AcpiEvUpdateGpeEnableMasks (GpeEventInfo); |
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401 | } |
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402 | } |
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403 | |||
404 | UnlockAndExit: |
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405 | AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); |
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406 | return_ACPI_STATUS (Status); |
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407 | } |
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408 | |||
409 | ACPI_EXPORT_SYMBOL (AcpiEnableGpe) |
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410 | |||
411 | |||
412 | /******************************************************************************* |
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413 | * |
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414 | * FUNCTION: AcpiDisableGpe |
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415 | * |
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416 | * PARAMETERS: GpeDevice - Parent GPE Device. NULL for GPE0/GPE1 |
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417 | * GpeNumber - GPE level within the GPE block |
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418 | * GpeType - ACPI_GPE_TYPE_RUNTIME or ACPI_GPE_TYPE_WAKE |
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419 | * or both |
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420 | * |
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421 | * RETURN: Status |
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422 | * |
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423 | * DESCRIPTION: Remove a reference to a GPE. When the last reference is |
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424 | * removed, only then is the GPE disabled (for runtime GPEs), or |
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425 | * the GPE mask bit disabled (for wake GPEs) |
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426 | * |
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427 | ******************************************************************************/ |
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428 | |||
429 | ACPI_STATUS |
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430 | AcpiDisableGpe ( |
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431 | ACPI_HANDLE GpeDevice, |
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432 | UINT32 GpeNumber, |
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433 | UINT8 GpeType) |
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434 | { |
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435 | ACPI_STATUS Status = AE_OK; |
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436 | ACPI_GPE_EVENT_INFO *GpeEventInfo; |
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437 | ACPI_CPU_FLAGS Flags; |
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438 | |||
439 | |||
440 | ACPI_FUNCTION_TRACE (AcpiDisableGpe); |
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441 | |||
442 | |||
443 | /* Parameter validation */ |
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444 | |||
445 | if (!GpeType || (GpeType & ~ACPI_GPE_TYPE_WAKE_RUN)) |
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446 | { |
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447 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
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448 | } |
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449 | |||
450 | Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock); |
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451 | |||
452 | /* Ensure that we have a valid GPE number */ |
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453 | |||
454 | GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber); |
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455 | if (!GpeEventInfo) |
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456 | { |
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457 | Status = AE_BAD_PARAMETER; |
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458 | goto UnlockAndExit; |
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459 | } |
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460 | |||
461 | /* Hardware-disable a runtime GPE on removal of the last reference */ |
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462 | |||
463 | if (GpeType & ACPI_GPE_TYPE_RUNTIME) |
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464 | { |
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465 | if (!GpeEventInfo->RuntimeCount) |
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466 | { |
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467 | Status = AE_LIMIT; /* There are no references to remove */ |
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468 | goto UnlockAndExit; |
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469 | } |
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470 | |||
471 | GpeEventInfo->RuntimeCount--; |
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472 | if (!GpeEventInfo->RuntimeCount) |
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473 | { |
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474 | Status = AcpiEvDisableGpe (GpeEventInfo); |
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475 | if (ACPI_FAILURE (Status)) |
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476 | { |
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477 | GpeEventInfo->RuntimeCount++; |
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478 | goto UnlockAndExit; |
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479 | } |
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480 | } |
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481 | } |
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482 | |||
483 | /* |
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484 | * Update masks for wake GPE on removal of the last reference. |
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485 | * No need to hardware-disable wake GPEs here, they are not currently |
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486 | * enabled. |
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487 | */ |
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488 | if (GpeType & ACPI_GPE_TYPE_WAKE) |
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489 | { |
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490 | if (!GpeEventInfo->WakeupCount) |
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491 | { |
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492 | Status = AE_LIMIT; /* There are no references to remove */ |
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493 | goto UnlockAndExit; |
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494 | } |
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495 | |||
496 | GpeEventInfo->WakeupCount--; |
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497 | if (!GpeEventInfo->WakeupCount) |
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498 | { |
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499 | (void) AcpiEvUpdateGpeEnableMasks (GpeEventInfo); |
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500 | } |
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501 | } |
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502 | |||
503 | |||
504 | UnlockAndExit: |
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505 | AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); |
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506 | return_ACPI_STATUS (Status); |
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507 | } |
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508 | |||
509 | ACPI_EXPORT_SYMBOL (AcpiDisableGpe) |
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510 | |||
511 | |||
512 | /******************************************************************************* |
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513 | * |
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514 | * FUNCTION: AcpiSetGpe |
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515 | * |
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516 | * PARAMETERS: GpeDevice - Parent GPE Device. NULL for GPE0/GPE1 |
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517 | * GpeNumber - GPE level within the GPE block |
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518 | * Action - ACPI_GPE_ENABLE or ACPI_GPE_DISABLE |
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519 | * |
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520 | * RETURN: Status |
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521 | * |
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522 | * DESCRIPTION: Enable or disable an individual GPE. This function bypasses |
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523 | * the reference count mechanism used in the AcpiEnableGpe and |
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524 | * AcpiDisableGpe interfaces -- and should be used with care. |
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525 | * |
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526 | * Note: Typically used to disable a runtime GPE for short period of time, |
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527 | * then re-enable it, without disturbing the existing reference counts. This |
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528 | * is useful, for example, in the Embedded Controller (EC) driver. |
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529 | * |
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530 | ******************************************************************************/ |
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531 | |||
532 | ACPI_STATUS |
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533 | AcpiSetGpe ( |
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534 | ACPI_HANDLE GpeDevice, |
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535 | UINT32 GpeNumber, |
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536 | UINT8 Action) |
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537 | { |
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538 | ACPI_GPE_EVENT_INFO *GpeEventInfo; |
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539 | ACPI_STATUS Status; |
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540 | ACPI_CPU_FLAGS Flags; |
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541 | |||
542 | |||
543 | ACPI_FUNCTION_TRACE (AcpiSetGpe); |
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544 | |||
545 | |||
546 | Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock); |
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547 | |||
548 | /* Ensure that we have a valid GPE number */ |
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549 | |||
550 | GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber); |
||
551 | if (!GpeEventInfo) |
||
552 | { |
||
553 | Status = AE_BAD_PARAMETER; |
||
554 | goto UnlockAndExit; |
||
555 | } |
||
556 | |||
557 | /* Perform the action */ |
||
558 | |||
559 | switch (Action) |
||
560 | { |
||
561 | case ACPI_GPE_ENABLE: |
||
562 | Status = AcpiEvEnableGpe (GpeEventInfo); |
||
563 | break; |
||
564 | |||
565 | case ACPI_GPE_DISABLE: |
||
566 | Status = AcpiEvDisableGpe (GpeEventInfo); |
||
567 | break; |
||
568 | |||
569 | default: |
||
570 | Status = AE_BAD_PARAMETER; |
||
571 | break; |
||
572 | } |
||
573 | |||
574 | UnlockAndExit: |
||
575 | AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); |
||
576 | return_ACPI_STATUS (Status); |
||
577 | } |
||
578 | |||
579 | ACPI_EXPORT_SYMBOL (AcpiSetGpe) |
||
580 | |||
581 | |||
582 | /******************************************************************************* |
||
583 | * |
||
584 | * FUNCTION: AcpiDisableEvent |
||
585 | * |
||
586 | * PARAMETERS: Event - The fixed eventto be enabled |
||
587 | * Flags - Reserved |
||
588 | * |
||
589 | * RETURN: Status |
||
590 | * |
||
591 | * DESCRIPTION: Disable an ACPI event (fixed) |
||
592 | * |
||
593 | ******************************************************************************/ |
||
594 | |||
595 | ACPI_STATUS |
||
596 | AcpiDisableEvent ( |
||
597 | UINT32 Event, |
||
598 | UINT32 Flags) |
||
599 | { |
||
600 | ACPI_STATUS Status = AE_OK; |
||
601 | UINT32 Value; |
||
602 | |||
603 | |||
604 | ACPI_FUNCTION_TRACE (AcpiDisableEvent); |
||
605 | |||
606 | |||
607 | /* Decode the Fixed Event */ |
||
608 | |||
609 | if (Event > ACPI_EVENT_MAX) |
||
610 | { |
||
611 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
||
612 | } |
||
613 | |||
614 | /* |
||
615 | * Disable the requested fixed event (by writing a zero to the enable |
||
616 | * register bit) |
||
617 | */ |
||
618 | Status = AcpiWriteBitRegister ( |
||
619 | AcpiGbl_FixedEventInfo[Event].EnableRegisterId, |
||
620 | ACPI_DISABLE_EVENT); |
||
621 | if (ACPI_FAILURE (Status)) |
||
622 | { |
||
623 | return_ACPI_STATUS (Status); |
||
624 | } |
||
625 | |||
626 | Status = AcpiReadBitRegister ( |
||
627 | AcpiGbl_FixedEventInfo[Event].EnableRegisterId, &Value); |
||
628 | if (ACPI_FAILURE (Status)) |
||
629 | { |
||
630 | return_ACPI_STATUS (Status); |
||
631 | } |
||
632 | |||
633 | if (Value != 0) |
||
634 | { |
||
635 | ACPI_ERROR ((AE_INFO, |
||
636 | "Could not disable %s events", AcpiUtGetEventName (Event))); |
||
637 | return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE); |
||
638 | } |
||
639 | |||
640 | return_ACPI_STATUS (Status); |
||
641 | } |
||
642 | |||
643 | ACPI_EXPORT_SYMBOL (AcpiDisableEvent) |
||
644 | |||
645 | |||
646 | /******************************************************************************* |
||
647 | * |
||
648 | * FUNCTION: AcpiClearEvent |
||
649 | * |
||
650 | * PARAMETERS: Event - The fixed event to be cleared |
||
651 | * |
||
652 | * RETURN: Status |
||
653 | * |
||
654 | * DESCRIPTION: Clear an ACPI event (fixed) |
||
655 | * |
||
656 | ******************************************************************************/ |
||
657 | |||
658 | ACPI_STATUS |
||
659 | AcpiClearEvent ( |
||
660 | UINT32 Event) |
||
661 | { |
||
662 | ACPI_STATUS Status = AE_OK; |
||
663 | |||
664 | |||
665 | ACPI_FUNCTION_TRACE (AcpiClearEvent); |
||
666 | |||
667 | |||
668 | /* Decode the Fixed Event */ |
||
669 | |||
670 | if (Event > ACPI_EVENT_MAX) |
||
671 | { |
||
672 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
||
673 | } |
||
674 | |||
675 | /* |
||
676 | * Clear the requested fixed event (By writing a one to the status |
||
677 | * register bit) |
||
678 | */ |
||
679 | Status = AcpiWriteBitRegister ( |
||
680 | AcpiGbl_FixedEventInfo[Event].StatusRegisterId, |
||
681 | ACPI_CLEAR_STATUS); |
||
682 | |||
683 | return_ACPI_STATUS (Status); |
||
684 | } |
||
685 | |||
686 | ACPI_EXPORT_SYMBOL (AcpiClearEvent) |
||
687 | |||
688 | |||
689 | /******************************************************************************* |
||
690 | * |
||
691 | * FUNCTION: AcpiClearGpe |
||
692 | * |
||
693 | * PARAMETERS: GpeDevice - Parent GPE Device. NULL for GPE0/GPE1 |
||
694 | * GpeNumber - GPE level within the GPE block |
||
695 | * |
||
696 | * RETURN: Status |
||
697 | * |
||
698 | * DESCRIPTION: Clear an ACPI event (general purpose) |
||
699 | * |
||
700 | ******************************************************************************/ |
||
701 | |||
702 | ACPI_STATUS |
||
703 | AcpiClearGpe ( |
||
704 | ACPI_HANDLE GpeDevice, |
||
705 | UINT32 GpeNumber) |
||
706 | { |
||
707 | ACPI_STATUS Status = AE_OK; |
||
708 | ACPI_GPE_EVENT_INFO *GpeEventInfo; |
||
709 | ACPI_CPU_FLAGS Flags; |
||
710 | |||
711 | |||
712 | ACPI_FUNCTION_TRACE (AcpiClearGpe); |
||
713 | |||
714 | |||
715 | Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock); |
||
716 | |||
717 | /* Ensure that we have a valid GPE number */ |
||
718 | |||
719 | GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber); |
||
720 | if (!GpeEventInfo) |
||
721 | { |
||
722 | Status = AE_BAD_PARAMETER; |
||
723 | goto UnlockAndExit; |
||
724 | } |
||
725 | |||
726 | Status = AcpiHwClearGpe (GpeEventInfo); |
||
727 | |||
728 | UnlockAndExit: |
||
729 | AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); |
||
730 | return_ACPI_STATUS (Status); |
||
731 | } |
||
732 | |||
733 | ACPI_EXPORT_SYMBOL (AcpiClearGpe) |
||
734 | |||
735 | |||
736 | /******************************************************************************* |
||
737 | * |
||
738 | * FUNCTION: AcpiGetEventStatus |
||
739 | * |
||
740 | * PARAMETERS: Event - The fixed event |
||
741 | * EventStatus - Where the current status of the event will |
||
742 | * be returned |
||
743 | * |
||
744 | * RETURN: Status |
||
745 | * |
||
746 | * DESCRIPTION: Obtains and returns the current status of the event |
||
747 | * |
||
748 | ******************************************************************************/ |
||
749 | |||
750 | ACPI_STATUS |
||
751 | AcpiGetEventStatus ( |
||
752 | UINT32 Event, |
||
753 | ACPI_EVENT_STATUS *EventStatus) |
||
754 | { |
||
755 | ACPI_STATUS Status = AE_OK; |
||
756 | |||
757 | |||
758 | ACPI_FUNCTION_TRACE (AcpiGetEventStatus); |
||
759 | |||
760 | |||
761 | if (!EventStatus) |
||
762 | { |
||
763 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
||
764 | } |
||
765 | |||
766 | /* Decode the Fixed Event */ |
||
767 | |||
768 | if (Event > ACPI_EVENT_MAX) |
||
769 | { |
||
770 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
||
771 | } |
||
772 | |||
773 | /* Get the status of the requested fixed event */ |
||
774 | |||
775 | Status = AcpiReadBitRegister ( |
||
776 | AcpiGbl_FixedEventInfo[Event].StatusRegisterId, EventStatus); |
||
777 | |||
778 | return_ACPI_STATUS (Status); |
||
779 | } |
||
780 | |||
781 | ACPI_EXPORT_SYMBOL (AcpiGetEventStatus) |
||
782 | |||
783 | |||
784 | /******************************************************************************* |
||
785 | * |
||
786 | * FUNCTION: AcpiGetGpeStatus |
||
787 | * |
||
788 | * PARAMETERS: GpeDevice - Parent GPE Device. NULL for GPE0/GPE1 |
||
789 | * GpeNumber - GPE level within the GPE block |
||
790 | * EventStatus - Where the current status of the event will |
||
791 | * be returned |
||
792 | * |
||
793 | * RETURN: Status |
||
794 | * |
||
795 | * DESCRIPTION: Get status of an event (general purpose) |
||
796 | * |
||
797 | ******************************************************************************/ |
||
798 | |||
799 | ACPI_STATUS |
||
800 | AcpiGetGpeStatus ( |
||
801 | ACPI_HANDLE GpeDevice, |
||
802 | UINT32 GpeNumber, |
||
803 | ACPI_EVENT_STATUS *EventStatus) |
||
804 | { |
||
805 | ACPI_STATUS Status = AE_OK; |
||
806 | ACPI_GPE_EVENT_INFO *GpeEventInfo; |
||
807 | ACPI_CPU_FLAGS Flags; |
||
808 | |||
809 | |||
810 | ACPI_FUNCTION_TRACE (AcpiGetGpeStatus); |
||
811 | |||
812 | |||
813 | Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock); |
||
814 | |||
815 | /* Ensure that we have a valid GPE number */ |
||
816 | |||
817 | GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber); |
||
818 | if (!GpeEventInfo) |
||
819 | { |
||
820 | Status = AE_BAD_PARAMETER; |
||
821 | goto UnlockAndExit; |
||
822 | } |
||
823 | |||
824 | /* Obtain status on the requested GPE number */ |
||
825 | |||
826 | Status = AcpiHwGetGpeStatus (GpeEventInfo, EventStatus); |
||
827 | |||
828 | UnlockAndExit: |
||
829 | AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); |
||
830 | return_ACPI_STATUS (Status); |
||
831 | } |
||
832 | |||
833 | ACPI_EXPORT_SYMBOL (AcpiGetGpeStatus) |
||
834 | |||
835 | |||
836 | /******************************************************************************* |
||
837 | * |
||
838 | * FUNCTION: AcpiInstallGpeBlock |
||
839 | * |
||
840 | * PARAMETERS: GpeDevice - Handle to the parent GPE Block Device |
||
841 | * GpeBlockAddress - Address and SpaceID |
||
842 | * RegisterCount - Number of GPE register pairs in the block |
||
843 | * InterruptNumber - H/W interrupt for the block |
||
844 | * |
||
845 | * RETURN: Status |
||
846 | * |
||
847 | * DESCRIPTION: Create and Install a block of GPE registers |
||
848 | * |
||
849 | ******************************************************************************/ |
||
850 | |||
851 | ACPI_STATUS |
||
852 | AcpiInstallGpeBlock ( |
||
853 | ACPI_HANDLE GpeDevice, |
||
854 | ACPI_GENERIC_ADDRESS *GpeBlockAddress, |
||
855 | UINT32 RegisterCount, |
||
856 | UINT32 InterruptNumber) |
||
857 | { |
||
858 | ACPI_STATUS Status; |
||
859 | ACPI_OPERAND_OBJECT *ObjDesc; |
||
860 | ACPI_NAMESPACE_NODE *Node; |
||
861 | ACPI_GPE_BLOCK_INFO *GpeBlock; |
||
862 | |||
863 | |||
864 | ACPI_FUNCTION_TRACE (AcpiInstallGpeBlock); |
||
865 | |||
866 | |||
867 | if ((!GpeDevice) || |
||
868 | (!GpeBlockAddress) || |
||
869 | (!RegisterCount)) |
||
870 | { |
||
871 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
||
872 | } |
||
873 | |||
874 | Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); |
||
875 | if (ACPI_FAILURE (Status)) |
||
876 | { |
||
877 | return (Status); |
||
878 | } |
||
879 | |||
880 | Node = AcpiNsValidateHandle (GpeDevice); |
||
881 | if (!Node) |
||
882 | { |
||
883 | Status = AE_BAD_PARAMETER; |
||
884 | goto UnlockAndExit; |
||
885 | } |
||
886 | |||
887 | /* |
||
888 | * For user-installed GPE Block Devices, the GpeBlockBaseNumber |
||
889 | * is always zero |
||
890 | */ |
||
891 | Status = AcpiEvCreateGpeBlock (Node, GpeBlockAddress, RegisterCount, |
||
892 | 0, InterruptNumber, &GpeBlock); |
||
893 | if (ACPI_FAILURE (Status)) |
||
894 | { |
||
895 | goto UnlockAndExit; |
||
896 | } |
||
897 | |||
898 | /* Install block in the DeviceObject attached to the node */ |
||
899 | |||
900 | ObjDesc = AcpiNsGetAttachedObject (Node); |
||
901 | if (!ObjDesc) |
||
902 | { |
||
903 | /* |
||
904 | * No object, create a new one (Device nodes do not always have |
||
905 | * an attached object) |
||
906 | */ |
||
907 | ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_DEVICE); |
||
908 | if (!ObjDesc) |
||
909 | { |
||
910 | Status = AE_NO_MEMORY; |
||
911 | goto UnlockAndExit; |
||
912 | } |
||
913 | |||
914 | Status = AcpiNsAttachObject (Node, ObjDesc, ACPI_TYPE_DEVICE); |
||
915 | |||
916 | /* Remove local reference to the object */ |
||
917 | |||
918 | AcpiUtRemoveReference (ObjDesc); |
||
919 | if (ACPI_FAILURE (Status)) |
||
920 | { |
||
921 | goto UnlockAndExit; |
||
922 | } |
||
923 | } |
||
924 | |||
925 | /* Now install the GPE block in the DeviceObject */ |
||
926 | |||
927 | ObjDesc->Device.GpeBlock = GpeBlock; |
||
928 | |||
929 | /* Run the _PRW methods and enable the runtime GPEs in the new block */ |
||
930 | |||
931 | Status = AcpiEvInitializeGpeBlock (Node, GpeBlock); |
||
932 | |||
933 | |||
934 | UnlockAndExit: |
||
935 | (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); |
||
936 | return_ACPI_STATUS (Status); |
||
937 | } |
||
938 | |||
939 | ACPI_EXPORT_SYMBOL (AcpiInstallGpeBlock) |
||
940 | |||
941 | |||
942 | /******************************************************************************* |
||
943 | * |
||
944 | * FUNCTION: AcpiRemoveGpeBlock |
||
945 | * |
||
946 | * PARAMETERS: GpeDevice - Handle to the parent GPE Block Device |
||
947 | * |
||
948 | * RETURN: Status |
||
949 | * |
||
950 | * DESCRIPTION: Remove a previously installed block of GPE registers |
||
951 | * |
||
952 | ******************************************************************************/ |
||
953 | |||
954 | ACPI_STATUS |
||
955 | AcpiRemoveGpeBlock ( |
||
956 | ACPI_HANDLE GpeDevice) |
||
957 | { |
||
958 | ACPI_OPERAND_OBJECT *ObjDesc; |
||
959 | ACPI_STATUS Status; |
||
960 | ACPI_NAMESPACE_NODE *Node; |
||
961 | |||
962 | |||
963 | ACPI_FUNCTION_TRACE (AcpiRemoveGpeBlock); |
||
964 | |||
965 | |||
966 | if (!GpeDevice) |
||
967 | { |
||
968 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
||
969 | } |
||
970 | |||
971 | Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); |
||
972 | if (ACPI_FAILURE (Status)) |
||
973 | { |
||
974 | return (Status); |
||
975 | } |
||
976 | |||
977 | Node = AcpiNsValidateHandle (GpeDevice); |
||
978 | if (!Node) |
||
979 | { |
||
980 | Status = AE_BAD_PARAMETER; |
||
981 | goto UnlockAndExit; |
||
982 | } |
||
983 | |||
984 | /* Get the DeviceObject attached to the node */ |
||
985 | |||
986 | ObjDesc = AcpiNsGetAttachedObject (Node); |
||
987 | if (!ObjDesc || |
||
988 | !ObjDesc->Device.GpeBlock) |
||
989 | { |
||
990 | return_ACPI_STATUS (AE_NULL_OBJECT); |
||
991 | } |
||
992 | |||
993 | /* Delete the GPE block (but not the DeviceObject) */ |
||
994 | |||
995 | Status = AcpiEvDeleteGpeBlock (ObjDesc->Device.GpeBlock); |
||
996 | if (ACPI_SUCCESS (Status)) |
||
997 | { |
||
998 | ObjDesc->Device.GpeBlock = NULL; |
||
999 | } |
||
1000 | |||
1001 | UnlockAndExit: |
||
1002 | (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); |
||
1003 | return_ACPI_STATUS (Status); |
||
1004 | } |
||
1005 | |||
1006 | ACPI_EXPORT_SYMBOL (AcpiRemoveGpeBlock) |
||
1007 | |||
1008 | |||
1009 | /******************************************************************************* |
||
1010 | * |
||
1011 | * FUNCTION: AcpiGetGpeDevice |
||
1012 | * |
||
1013 | * PARAMETERS: Index - System GPE index (0-CurrentGpeCount) |
||
1014 | * GpeDevice - Where the parent GPE Device is returned |
||
1015 | * |
||
1016 | * RETURN: Status |
||
1017 | * |
||
1018 | * DESCRIPTION: Obtain the GPE device associated with the input index. A NULL |
||
1019 | * gpe device indicates that the gpe number is contained in one of |
||
1020 | * the FADT-defined gpe blocks. Otherwise, the GPE block device. |
||
1021 | * |
||
1022 | ******************************************************************************/ |
||
1023 | |||
1024 | ACPI_STATUS |
||
1025 | AcpiGetGpeDevice ( |
||
1026 | UINT32 Index, |
||
1027 | ACPI_HANDLE *GpeDevice) |
||
1028 | { |
||
1029 | ACPI_GPE_DEVICE_INFO Info; |
||
1030 | ACPI_STATUS Status; |
||
1031 | |||
1032 | |||
1033 | ACPI_FUNCTION_TRACE (AcpiGetGpeDevice); |
||
1034 | |||
1035 | |||
1036 | if (!GpeDevice) |
||
1037 | { |
||
1038 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
||
1039 | } |
||
1040 | |||
1041 | if (Index >= AcpiCurrentGpeCount) |
||
1042 | { |
||
1043 | return_ACPI_STATUS (AE_NOT_EXIST); |
||
1044 | } |
||
1045 | |||
1046 | /* Setup and walk the GPE list */ |
||
1047 | |||
1048 | Info.Index = Index; |
||
1049 | Info.Status = AE_NOT_EXIST; |
||
1050 | Info.GpeDevice = NULL; |
||
1051 | Info.NextBlockBaseIndex = 0; |
||
1052 | |||
1053 | Status = AcpiEvWalkGpeList (AcpiEvGetGpeDevice, &Info); |
||
1054 | if (ACPI_FAILURE (Status)) |
||
1055 | { |
||
1056 | return_ACPI_STATUS (Status); |
||
1057 | } |
||
1058 | |||
1059 | *GpeDevice = ACPI_CAST_PTR (ACPI_HANDLE, Info.GpeDevice); |
||
1060 | return_ACPI_STATUS (Info.Status); |
||
1061 | } |
||
1062 | |||
1063 | ACPI_EXPORT_SYMBOL (AcpiGetGpeDevice) |
||
1064 | |||
1065 | |||
1066 | /******************************************************************************* |
||
1067 | * |
||
1068 | * FUNCTION: AcpiEvGetGpeDevice |
||
1069 | * |
||
1070 | * PARAMETERS: GPE_WALK_CALLBACK |
||
1071 | * |
||
1072 | * RETURN: Status |
||
1073 | * |
||
1074 | * DESCRIPTION: Matches the input GPE index (0-CurrentGpeCount) with a GPE |
||
1075 | * block device. NULL if the GPE is one of the FADT-defined GPEs. |
||
1076 | * |
||
1077 | ******************************************************************************/ |
||
1078 | |||
1079 | static ACPI_STATUS |
||
1080 | AcpiEvGetGpeDevice ( |
||
1081 | ACPI_GPE_XRUPT_INFO *GpeXruptInfo, |
||
1082 | ACPI_GPE_BLOCK_INFO *GpeBlock, |
||
1083 | void *Context) |
||
1084 | { |
||
1085 | ACPI_GPE_DEVICE_INFO *Info = Context; |
||
1086 | |||
1087 | |||
1088 | /* Increment Index by the number of GPEs in this block */ |
||
1089 | |||
1090 | Info->NextBlockBaseIndex += GpeBlock->GpeCount; |
||
1091 | |||
1092 | if (Info->Index < Info->NextBlockBaseIndex) |
||
1093 | { |
||
1094 | /* |
||
1095 | * The GPE index is within this block, get the node. Leave the node |
||
1096 | * NULL for the FADT-defined GPEs |
||
1097 | */ |
||
1098 | if ((GpeBlock->Node)->Type == ACPI_TYPE_DEVICE) |
||
1099 | { |
||
1100 | Info->GpeDevice = GpeBlock->Node; |
||
1101 | } |
||
1102 | |||
1103 | Info->Status = AE_OK; |
||
1104 | return (AE_CTRL_END); |
||
1105 | } |
||
1106 | |||
1107 | return (AE_OK); |
||
1108 | } |
||
1109 | |||
1110 | |||
1111 | /****************************************************************************** |
||
1112 | * |
||
1113 | * FUNCTION: AcpiDisableAllGpes |
||
1114 | * |
||
1115 | * PARAMETERS: None |
||
1116 | * |
||
1117 | * RETURN: Status |
||
1118 | * |
||
1119 | * DESCRIPTION: Disable and clear all GPEs in all GPE blocks |
||
1120 | * |
||
1121 | ******************************************************************************/ |
||
1122 | |||
1123 | ACPI_STATUS |
||
1124 | AcpiDisableAllGpes ( |
||
1125 | void) |
||
1126 | { |
||
1127 | ACPI_STATUS Status; |
||
1128 | |||
1129 | |||
1130 | ACPI_FUNCTION_TRACE (AcpiDisableAllGpes); |
||
1131 | |||
1132 | |||
1133 | Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); |
||
1134 | if (ACPI_FAILURE (Status)) |
||
1135 | { |
||
1136 | return_ACPI_STATUS (Status); |
||
1137 | } |
||
1138 | |||
1139 | Status = AcpiHwDisableAllGpes (); |
||
1140 | (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); |
||
1141 | |||
1142 | return_ACPI_STATUS (Status); |
||
1143 | } |
||
1144 | |||
1145 | |||
1146 | /****************************************************************************** |
||
1147 | * |
||
1148 | * FUNCTION: AcpiEnableAllRuntimeGpes |
||
1149 | * |
||
1150 | * PARAMETERS: None |
||
1151 | * |
||
1152 | * RETURN: Status |
||
1153 | * |
||
1154 | * DESCRIPTION: Enable all "runtime" GPEs, in all GPE blocks |
||
1155 | * |
||
1156 | ******************************************************************************/ |
||
1157 | |||
1158 | ACPI_STATUS |
||
1159 | AcpiEnableAllRuntimeGpes ( |
||
1160 | void) |
||
1161 | { |
||
1162 | ACPI_STATUS Status; |
||
1163 | |||
1164 | |||
1165 | ACPI_FUNCTION_TRACE (AcpiEnableAllRuntimeGpes); |
||
1166 | |||
1167 | |||
1168 | Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); |
||
1169 | if (ACPI_FAILURE (Status)) |
||
1170 | { |
||
1171 | return_ACPI_STATUS (Status); |
||
1172 | } |
||
1173 | |||
1174 | Status = AcpiHwEnableAllRuntimeGpes (); |
||
1175 | (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS); |
||
1176 | |||
1177 | return_ACPI_STATUS (Status); |
||
1178 | }> |
||
1179 |