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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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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 | |||
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 "actables.h" |
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122 | |||
123 | #define _COMPONENT ACPI_EVENTS |
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124 | ACPI_MODULE_NAME ("evxfevnt") |
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125 | |||
126 | |||
127 | /******************************************************************************* |
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128 | * |
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129 | * FUNCTION: AcpiEnable |
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130 | * |
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131 | * PARAMETERS: None |
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132 | * |
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133 | * RETURN: Status |
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134 | * |
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135 | * DESCRIPTION: Transfers the system into ACPI mode. |
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136 | * |
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137 | ******************************************************************************/ |
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138 | |||
139 | ACPI_STATUS |
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140 | AcpiEnable ( |
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141 | void) |
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142 | { |
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143 | ACPI_STATUS Status = AE_OK; |
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144 | |||
145 | |||
146 | ACPI_FUNCTION_TRACE (AcpiEnable); |
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147 | |||
148 | |||
149 | /* ACPI tables must be present */ |
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150 | |||
151 | if (!AcpiTbTablesLoaded ()) |
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152 | { |
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153 | return_ACPI_STATUS (AE_NO_ACPI_TABLES); |
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154 | } |
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155 | |||
156 | /* Check current mode */ |
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157 | |||
158 | if (AcpiHwGetMode() == ACPI_SYS_MODE_ACPI) |
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159 | { |
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160 | ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "System is already in ACPI mode\n")); |
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161 | } |
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162 | else |
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163 | { |
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164 | /* Transition to ACPI mode */ |
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165 | |||
166 | Status = AcpiHwSetMode (ACPI_SYS_MODE_ACPI); |
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167 | if (ACPI_FAILURE (Status)) |
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168 | { |
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169 | ACPI_ERROR ((AE_INFO, "Could not transition to ACPI mode")); |
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170 | return_ACPI_STATUS (Status); |
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171 | } |
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172 | |||
173 | ACPI_DEBUG_PRINT ((ACPI_DB_INIT, |
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174 | "Transition to ACPI mode successful\n")); |
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175 | } |
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176 | |||
177 | return_ACPI_STATUS (Status); |
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178 | } |
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179 | |||
180 | ACPI_EXPORT_SYMBOL (AcpiEnable) |
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181 | |||
182 | |||
183 | /******************************************************************************* |
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184 | * |
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185 | * FUNCTION: AcpiDisable |
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186 | * |
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187 | * PARAMETERS: None |
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188 | * |
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189 | * RETURN: Status |
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190 | * |
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191 | * DESCRIPTION: Transfers the system into LEGACY (non-ACPI) mode. |
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192 | * |
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193 | ******************************************************************************/ |
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194 | |||
195 | ACPI_STATUS |
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196 | AcpiDisable ( |
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197 | void) |
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198 | { |
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199 | ACPI_STATUS Status = AE_OK; |
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200 | |||
201 | |||
202 | ACPI_FUNCTION_TRACE (AcpiDisable); |
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203 | |||
204 | |||
205 | if (AcpiHwGetMode() == ACPI_SYS_MODE_LEGACY) |
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206 | { |
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207 | ACPI_DEBUG_PRINT ((ACPI_DB_INIT, |
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208 | "System is already in legacy (non-ACPI) mode\n")); |
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209 | } |
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210 | else |
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211 | { |
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212 | /* Transition to LEGACY mode */ |
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213 | |||
214 | Status = AcpiHwSetMode (ACPI_SYS_MODE_LEGACY); |
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215 | |||
216 | if (ACPI_FAILURE (Status)) |
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217 | { |
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218 | ACPI_ERROR ((AE_INFO, |
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219 | "Could not exit ACPI mode to legacy mode")); |
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220 | return_ACPI_STATUS (Status); |
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221 | } |
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222 | |||
223 | ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "ACPI mode disabled\n")); |
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224 | } |
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225 | |||
226 | return_ACPI_STATUS (Status); |
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227 | } |
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228 | |||
229 | ACPI_EXPORT_SYMBOL (AcpiDisable) |
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230 | |||
231 | |||
232 | /******************************************************************************* |
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233 | * |
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234 | * FUNCTION: AcpiEnableEvent |
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235 | * |
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236 | * PARAMETERS: Event - The fixed eventto be enabled |
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237 | * Flags - Reserved |
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238 | * |
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239 | * RETURN: Status |
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240 | * |
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241 | * DESCRIPTION: Enable an ACPI event (fixed) |
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242 | * |
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243 | ******************************************************************************/ |
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244 | |||
245 | ACPI_STATUS |
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246 | AcpiEnableEvent ( |
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247 | UINT32 Event, |
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248 | UINT32 Flags) |
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249 | { |
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250 | ACPI_STATUS Status = AE_OK; |
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251 | UINT32 Value; |
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252 | |||
253 | |||
254 | ACPI_FUNCTION_TRACE (AcpiEnableEvent); |
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255 | |||
256 | |||
257 | /* Decode the Fixed Event */ |
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258 | |||
259 | if (Event > ACPI_EVENT_MAX) |
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260 | { |
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261 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
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262 | } |
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263 | |||
264 | /* |
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265 | * Enable the requested fixed event (by writing a one to the enable |
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266 | * register bit) |
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267 | */ |
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268 | Status = AcpiWriteBitRegister ( |
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269 | AcpiGbl_FixedEventInfo[Event].EnableRegisterId, |
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270 | ACPI_ENABLE_EVENT); |
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271 | if (ACPI_FAILURE (Status)) |
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272 | { |
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273 | return_ACPI_STATUS (Status); |
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274 | } |
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275 | |||
276 | /* Make sure that the hardware responded */ |
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277 | |||
278 | Status = AcpiReadBitRegister ( |
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279 | AcpiGbl_FixedEventInfo[Event].EnableRegisterId, &Value); |
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280 | if (ACPI_FAILURE (Status)) |
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281 | { |
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282 | return_ACPI_STATUS (Status); |
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283 | } |
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284 | |||
285 | if (Value != 1) |
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286 | { |
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287 | ACPI_ERROR ((AE_INFO, |
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288 | "Could not enable %s event", AcpiUtGetEventName (Event))); |
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289 | return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE); |
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290 | } |
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291 | |||
292 | return_ACPI_STATUS (Status); |
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293 | } |
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294 | |||
295 | ACPI_EXPORT_SYMBOL (AcpiEnableEvent) |
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296 | |||
297 | |||
298 | /******************************************************************************* |
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299 | * |
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300 | * FUNCTION: AcpiDisableEvent |
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301 | * |
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2216 | Serge | 302 | * PARAMETERS: Event - The fixed event to be disabled |
1498 | serge | 303 | * Flags - Reserved |
304 | * |
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305 | * RETURN: Status |
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306 | * |
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307 | * DESCRIPTION: Disable an ACPI event (fixed) |
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308 | * |
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309 | ******************************************************************************/ |
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310 | |||
311 | ACPI_STATUS |
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312 | AcpiDisableEvent ( |
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313 | UINT32 Event, |
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314 | UINT32 Flags) |
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315 | { |
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316 | ACPI_STATUS Status = AE_OK; |
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317 | UINT32 Value; |
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318 | |||
319 | |||
320 | ACPI_FUNCTION_TRACE (AcpiDisableEvent); |
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321 | |||
322 | |||
323 | /* Decode the Fixed Event */ |
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324 | |||
325 | if (Event > ACPI_EVENT_MAX) |
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326 | { |
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327 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
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328 | } |
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329 | |||
330 | /* |
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331 | * Disable the requested fixed event (by writing a zero to the enable |
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332 | * register bit) |
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333 | */ |
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334 | Status = AcpiWriteBitRegister ( |
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335 | AcpiGbl_FixedEventInfo[Event].EnableRegisterId, |
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336 | ACPI_DISABLE_EVENT); |
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337 | if (ACPI_FAILURE (Status)) |
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338 | { |
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339 | return_ACPI_STATUS (Status); |
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340 | } |
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341 | |||
342 | Status = AcpiReadBitRegister ( |
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343 | AcpiGbl_FixedEventInfo[Event].EnableRegisterId, &Value); |
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344 | if (ACPI_FAILURE (Status)) |
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345 | { |
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346 | return_ACPI_STATUS (Status); |
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347 | } |
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348 | |||
349 | if (Value != 0) |
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350 | { |
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351 | ACPI_ERROR ((AE_INFO, |
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352 | "Could not disable %s events", AcpiUtGetEventName (Event))); |
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353 | return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE); |
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354 | } |
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355 | |||
356 | return_ACPI_STATUS (Status); |
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357 | } |
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358 | |||
359 | ACPI_EXPORT_SYMBOL (AcpiDisableEvent) |
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360 | |||
361 | |||
362 | /******************************************************************************* |
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363 | * |
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364 | * FUNCTION: AcpiClearEvent |
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365 | * |
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366 | * PARAMETERS: Event - The fixed event to be cleared |
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367 | * |
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368 | * RETURN: Status |
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369 | * |
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370 | * DESCRIPTION: Clear an ACPI event (fixed) |
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371 | * |
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372 | ******************************************************************************/ |
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373 | |||
374 | ACPI_STATUS |
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375 | AcpiClearEvent ( |
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376 | UINT32 Event) |
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377 | { |
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378 | ACPI_STATUS Status = AE_OK; |
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379 | |||
380 | |||
381 | ACPI_FUNCTION_TRACE (AcpiClearEvent); |
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382 | |||
383 | |||
384 | /* Decode the Fixed Event */ |
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385 | |||
386 | if (Event > ACPI_EVENT_MAX) |
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387 | { |
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388 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
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389 | } |
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390 | |||
391 | /* |
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392 | * Clear the requested fixed event (By writing a one to the status |
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393 | * register bit) |
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394 | */ |
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395 | Status = AcpiWriteBitRegister ( |
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396 | AcpiGbl_FixedEventInfo[Event].StatusRegisterId, |
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397 | ACPI_CLEAR_STATUS); |
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398 | |||
399 | return_ACPI_STATUS (Status); |
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400 | } |
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401 | |||
402 | ACPI_EXPORT_SYMBOL (AcpiClearEvent) |
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403 | |||
404 | |||
405 | /******************************************************************************* |
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406 | * |
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407 | * FUNCTION: AcpiGetEventStatus |
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408 | * |
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409 | * PARAMETERS: Event - The fixed event |
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410 | * EventStatus - Where the current status of the event will |
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411 | * be returned |
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412 | * |
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413 | * RETURN: Status |
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414 | * |
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415 | * DESCRIPTION: Obtains and returns the current status of the event |
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416 | * |
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417 | ******************************************************************************/ |
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418 | |||
419 | ACPI_STATUS |
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420 | AcpiGetEventStatus ( |
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421 | UINT32 Event, |
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422 | ACPI_EVENT_STATUS *EventStatus) |
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423 | { |
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424 | ACPI_STATUS Status = AE_OK; |
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425 | |||
426 | |||
427 | ACPI_FUNCTION_TRACE (AcpiGetEventStatus); |
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428 | |||
429 | |||
430 | if (!EventStatus) |
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431 | { |
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432 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
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433 | } |
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434 | |||
435 | /* Decode the Fixed Event */ |
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436 | |||
437 | if (Event > ACPI_EVENT_MAX) |
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438 | { |
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439 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
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440 | } |
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441 | |||
442 | /* Get the status of the requested fixed event */ |
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443 | |||
444 | Status = AcpiReadBitRegister ( |
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445 | AcpiGbl_FixedEventInfo[Event].StatusRegisterId, EventStatus); |
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446 | |||
447 | return_ACPI_STATUS (Status); |
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448 | } |
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449 | |||
450 | ACPI_EXPORT_SYMBOL (AcpiGetEventStatus) |
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451 |