evgpe.c revision 1.1.1.2.8.2
1 1.1.1.2.8.2 jruoho /****************************************************************************** 2 1.1.1.2.8.2 jruoho * 3 1.1.1.2.8.2 jruoho * Module Name: evgpe - General Purpose Event handling and dispatch 4 1.1.1.2.8.2 jruoho * 5 1.1.1.2.8.2 jruoho *****************************************************************************/ 6 1.1.1.2.8.2 jruoho 7 1.1.1.2.8.2 jruoho /* 8 1.1.1.2.8.2 jruoho * Copyright (C) 2000 - 2011, Intel Corp. 9 1.1.1.2.8.2 jruoho * All rights reserved. 10 1.1.1.2.8.2 jruoho * 11 1.1.1.2.8.2 jruoho * Redistribution and use in source and binary forms, with or without 12 1.1.1.2.8.2 jruoho * modification, are permitted provided that the following conditions 13 1.1.1.2.8.2 jruoho * are met: 14 1.1.1.2.8.2 jruoho * 1. Redistributions of source code must retain the above copyright 15 1.1.1.2.8.2 jruoho * notice, this list of conditions, and the following disclaimer, 16 1.1.1.2.8.2 jruoho * without modification. 17 1.1.1.2.8.2 jruoho * 2. Redistributions in binary form must reproduce at minimum a disclaimer 18 1.1.1.2.8.2 jruoho * substantially similar to the "NO WARRANTY" disclaimer below 19 1.1.1.2.8.2 jruoho * ("Disclaimer") and any redistribution must be conditioned upon 20 1.1.1.2.8.2 jruoho * including a substantially similar Disclaimer requirement for further 21 1.1.1.2.8.2 jruoho * binary redistribution. 22 1.1.1.2.8.2 jruoho * 3. Neither the names of the above-listed copyright holders nor the names 23 1.1.1.2.8.2 jruoho * of any contributors may be used to endorse or promote products derived 24 1.1.1.2.8.2 jruoho * from this software without specific prior written permission. 25 1.1.1.2.8.2 jruoho * 26 1.1.1.2.8.2 jruoho * Alternatively, this software may be distributed under the terms of the 27 1.1.1.2.8.2 jruoho * GNU General Public License ("GPL") version 2 as published by the Free 28 1.1.1.2.8.2 jruoho * Software Foundation. 29 1.1.1.2.8.2 jruoho * 30 1.1.1.2.8.2 jruoho * NO WARRANTY 31 1.1.1.2.8.2 jruoho * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 32 1.1.1.2.8.2 jruoho * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 33 1.1.1.2.8.2 jruoho * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 34 1.1.1.2.8.2 jruoho * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 35 1.1.1.2.8.2 jruoho * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36 1.1.1.2.8.2 jruoho * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37 1.1.1.2.8.2 jruoho * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38 1.1.1.2.8.2 jruoho * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 39 1.1.1.2.8.2 jruoho * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 40 1.1.1.2.8.2 jruoho * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 41 1.1.1.2.8.2 jruoho * POSSIBILITY OF SUCH DAMAGES. 42 1.1.1.2.8.2 jruoho */ 43 1.1.1.2.8.2 jruoho 44 1.1.1.2.8.2 jruoho #include "acpi.h" 45 1.1.1.2.8.2 jruoho #include "accommon.h" 46 1.1.1.2.8.2 jruoho #include "acevents.h" 47 1.1.1.2.8.2 jruoho #include "acnamesp.h" 48 1.1.1.2.8.2 jruoho 49 1.1.1.2.8.2 jruoho #define _COMPONENT ACPI_EVENTS 50 1.1.1.2.8.2 jruoho ACPI_MODULE_NAME ("evgpe") 51 1.1.1.2.8.2 jruoho 52 1.1.1.2.8.2 jruoho /* Local prototypes */ 53 1.1.1.2.8.2 jruoho 54 1.1.1.2.8.2 jruoho static void ACPI_SYSTEM_XFACE 55 1.1.1.2.8.2 jruoho AcpiEvAsynchExecuteGpeMethod ( 56 1.1.1.2.8.2 jruoho void *Context); 57 1.1.1.2.8.2 jruoho 58 1.1.1.2.8.2 jruoho static void ACPI_SYSTEM_XFACE 59 1.1.1.2.8.2 jruoho AcpiEvAsynchEnableGpe ( 60 1.1.1.2.8.2 jruoho void *Context); 61 1.1.1.2.8.2 jruoho 62 1.1.1.2.8.2 jruoho 63 1.1.1.2.8.2 jruoho /******************************************************************************* 64 1.1.1.2.8.2 jruoho * 65 1.1.1.2.8.2 jruoho * FUNCTION: AcpiEvUpdateGpeEnableMask 66 1.1.1.2.8.2 jruoho * 67 1.1.1.2.8.2 jruoho * PARAMETERS: GpeEventInfo - GPE to update 68 1.1.1.2.8.2 jruoho * 69 1.1.1.2.8.2 jruoho * RETURN: Status 70 1.1.1.2.8.2 jruoho * 71 1.1.1.2.8.2 jruoho * DESCRIPTION: Updates GPE register enable mask based upon whether there are 72 1.1.1.2.8.2 jruoho * runtime references to this GPE 73 1.1.1.2.8.2 jruoho * 74 1.1.1.2.8.2 jruoho ******************************************************************************/ 75 1.1.1.2.8.2 jruoho 76 1.1.1.2.8.2 jruoho ACPI_STATUS 77 1.1.1.2.8.2 jruoho AcpiEvUpdateGpeEnableMask ( 78 1.1.1.2.8.2 jruoho ACPI_GPE_EVENT_INFO *GpeEventInfo) 79 1.1.1.2.8.2 jruoho { 80 1.1.1.2.8.2 jruoho ACPI_GPE_REGISTER_INFO *GpeRegisterInfo; 81 1.1.1.2.8.2 jruoho UINT32 RegisterBit; 82 1.1.1.2.8.2 jruoho 83 1.1.1.2.8.2 jruoho 84 1.1.1.2.8.2 jruoho ACPI_FUNCTION_TRACE (EvUpdateGpeEnableMask); 85 1.1.1.2.8.2 jruoho 86 1.1.1.2.8.2 jruoho 87 1.1.1.2.8.2 jruoho GpeRegisterInfo = GpeEventInfo->RegisterInfo; 88 1.1.1.2.8.2 jruoho if (!GpeRegisterInfo) 89 1.1.1.2.8.2 jruoho { 90 1.1.1.2.8.2 jruoho return_ACPI_STATUS (AE_NOT_EXIST); 91 1.1.1.2.8.2 jruoho } 92 1.1.1.2.8.2 jruoho 93 1.1.1.2.8.2 jruoho RegisterBit = AcpiHwGetGpeRegisterBit (GpeEventInfo, GpeRegisterInfo); 94 1.1.1.2.8.2 jruoho 95 1.1.1.2.8.2 jruoho /* Clear the run bit up front */ 96 1.1.1.2.8.2 jruoho 97 1.1.1.2.8.2 jruoho ACPI_CLEAR_BIT (GpeRegisterInfo->EnableForRun, RegisterBit); 98 1.1.1.2.8.2 jruoho 99 1.1.1.2.8.2 jruoho /* Set the mask bit only if there are references to this GPE */ 100 1.1.1.2.8.2 jruoho 101 1.1.1.2.8.2 jruoho if (GpeEventInfo->RuntimeCount) 102 1.1.1.2.8.2 jruoho { 103 1.1.1.2.8.2 jruoho ACPI_SET_BIT (GpeRegisterInfo->EnableForRun, (UINT8) RegisterBit); 104 1.1.1.2.8.2 jruoho } 105 1.1.1.2.8.2 jruoho 106 1.1.1.2.8.2 jruoho return_ACPI_STATUS (AE_OK); 107 1.1.1.2.8.2 jruoho } 108 1.1.1.2.8.2 jruoho 109 1.1.1.2.8.2 jruoho 110 1.1.1.2.8.2 jruoho /******************************************************************************* 111 1.1.1.2.8.2 jruoho * 112 1.1.1.2.8.2 jruoho * FUNCTION: AcpiEvEnableGpe 113 1.1.1.2.8.2 jruoho * 114 1.1.1.2.8.2 jruoho * PARAMETERS: GpeEventInfo - GPE to enable 115 1.1.1.2.8.2 jruoho * 116 1.1.1.2.8.2 jruoho * RETURN: Status 117 1.1.1.2.8.2 jruoho * 118 1.1.1.2.8.2 jruoho * DESCRIPTION: Clear a GPE of stale events and enable it. 119 1.1.1.2.8.2 jruoho * 120 1.1.1.2.8.2 jruoho ******************************************************************************/ 121 1.1.1.2.8.2 jruoho 122 1.1.1.2.8.2 jruoho ACPI_STATUS 123 1.1.1.2.8.2 jruoho AcpiEvEnableGpe ( 124 1.1.1.2.8.2 jruoho ACPI_GPE_EVENT_INFO *GpeEventInfo) 125 1.1.1.2.8.2 jruoho { 126 1.1.1.2.8.2 jruoho ACPI_STATUS Status; 127 1.1.1.2.8.2 jruoho 128 1.1.1.2.8.2 jruoho 129 1.1.1.2.8.2 jruoho ACPI_FUNCTION_TRACE (EvEnableGpe); 130 1.1.1.2.8.2 jruoho 131 1.1.1.2.8.2 jruoho 132 1.1.1.2.8.2 jruoho /* 133 1.1.1.2.8.2 jruoho * We will only allow a GPE to be enabled if it has either an associated 134 1.1.1.2.8.2 jruoho * method (_Lxx/_Exx) or a handler, or is using the implicit notify 135 1.1.1.2.8.2 jruoho * feature. Otherwise, the GPE will be immediately disabled by 136 1.1.1.2.8.2 jruoho * AcpiEvGpeDispatch the first time it fires. 137 1.1.1.2.8.2 jruoho */ 138 1.1.1.2.8.2 jruoho if ((GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) == 139 1.1.1.2.8.2 jruoho ACPI_GPE_DISPATCH_NONE) 140 1.1.1.2.8.2 jruoho { 141 1.1.1.2.8.2 jruoho return_ACPI_STATUS (AE_NO_HANDLER); 142 1.1.1.2.8.2 jruoho } 143 1.1.1.2.8.2 jruoho 144 1.1.1.2.8.2 jruoho /* Clear the GPE (of stale events) */ 145 1.1.1.2.8.2 jruoho 146 1.1.1.2.8.2 jruoho Status = AcpiHwClearGpe (GpeEventInfo); 147 1.1.1.2.8.2 jruoho if (ACPI_FAILURE (Status)) 148 1.1.1.2.8.2 jruoho { 149 1.1.1.2.8.2 jruoho return_ACPI_STATUS (Status); 150 1.1.1.2.8.2 jruoho } 151 1.1.1.2.8.2 jruoho 152 1.1.1.2.8.2 jruoho /* Enable the requested GPE */ 153 1.1.1.2.8.2 jruoho 154 1.1.1.2.8.2 jruoho Status = AcpiHwLowSetGpe (GpeEventInfo, ACPI_GPE_ENABLE); 155 1.1.1.2.8.2 jruoho return_ACPI_STATUS (Status); 156 1.1.1.2.8.2 jruoho } 157 1.1.1.2.8.2 jruoho 158 1.1.1.2.8.2 jruoho 159 1.1.1.2.8.2 jruoho /******************************************************************************* 160 1.1.1.2.8.2 jruoho * 161 1.1.1.2.8.2 jruoho * FUNCTION: AcpiEvAddGpeReference 162 1.1.1.2.8.2 jruoho * 163 1.1.1.2.8.2 jruoho * PARAMETERS: GpeEventInfo - Add a reference to this GPE 164 1.1.1.2.8.2 jruoho * 165 1.1.1.2.8.2 jruoho * RETURN: Status 166 1.1.1.2.8.2 jruoho * 167 1.1.1.2.8.2 jruoho * DESCRIPTION: Add a reference to a GPE. On the first reference, the GPE is 168 1.1.1.2.8.2 jruoho * hardware-enabled. 169 1.1.1.2.8.2 jruoho * 170 1.1.1.2.8.2 jruoho ******************************************************************************/ 171 1.1.1.2.8.2 jruoho 172 1.1.1.2.8.2 jruoho ACPI_STATUS 173 1.1.1.2.8.2 jruoho AcpiEvAddGpeReference ( 174 1.1.1.2.8.2 jruoho ACPI_GPE_EVENT_INFO *GpeEventInfo) 175 1.1.1.2.8.2 jruoho { 176 1.1.1.2.8.2 jruoho ACPI_STATUS Status = AE_OK; 177 1.1.1.2.8.2 jruoho 178 1.1.1.2.8.2 jruoho 179 1.1.1.2.8.2 jruoho ACPI_FUNCTION_TRACE (EvAddGpeReference); 180 1.1.1.2.8.2 jruoho 181 1.1.1.2.8.2 jruoho 182 1.1.1.2.8.2 jruoho if (GpeEventInfo->RuntimeCount == ACPI_UINT8_MAX) 183 1.1.1.2.8.2 jruoho { 184 1.1.1.2.8.2 jruoho return_ACPI_STATUS (AE_LIMIT); 185 1.1.1.2.8.2 jruoho } 186 1.1.1.2.8.2 jruoho 187 1.1.1.2.8.2 jruoho GpeEventInfo->RuntimeCount++; 188 1.1.1.2.8.2 jruoho if (GpeEventInfo->RuntimeCount == 1) 189 1.1.1.2.8.2 jruoho { 190 1.1.1.2.8.2 jruoho /* Enable on first reference */ 191 1.1.1.2.8.2 jruoho 192 1.1.1.2.8.2 jruoho Status = AcpiEvUpdateGpeEnableMask (GpeEventInfo); 193 1.1.1.2.8.2 jruoho if (ACPI_SUCCESS (Status)) 194 1.1.1.2.8.2 jruoho { 195 1.1.1.2.8.2 jruoho Status = AcpiEvEnableGpe (GpeEventInfo); 196 1.1.1.2.8.2 jruoho } 197 1.1.1.2.8.2 jruoho 198 1.1.1.2.8.2 jruoho if (ACPI_FAILURE (Status)) 199 1.1.1.2.8.2 jruoho { 200 1.1.1.2.8.2 jruoho GpeEventInfo->RuntimeCount--; 201 1.1.1.2.8.2 jruoho } 202 1.1.1.2.8.2 jruoho } 203 1.1.1.2.8.2 jruoho 204 1.1.1.2.8.2 jruoho return_ACPI_STATUS (Status); 205 1.1.1.2.8.2 jruoho } 206 1.1.1.2.8.2 jruoho 207 1.1.1.2.8.2 jruoho 208 1.1.1.2.8.2 jruoho /******************************************************************************* 209 1.1.1.2.8.2 jruoho * 210 1.1.1.2.8.2 jruoho * FUNCTION: AcpiEvRemoveGpeReference 211 1.1.1.2.8.2 jruoho * 212 1.1.1.2.8.2 jruoho * PARAMETERS: GpeEventInfo - Remove a reference to this GPE 213 1.1.1.2.8.2 jruoho * 214 1.1.1.2.8.2 jruoho * RETURN: Status 215 1.1.1.2.8.2 jruoho * 216 1.1.1.2.8.2 jruoho * DESCRIPTION: Remove a reference to a GPE. When the last reference is 217 1.1.1.2.8.2 jruoho * removed, the GPE is hardware-disabled. 218 1.1.1.2.8.2 jruoho * 219 1.1.1.2.8.2 jruoho ******************************************************************************/ 220 1.1.1.2.8.2 jruoho 221 1.1.1.2.8.2 jruoho ACPI_STATUS 222 1.1.1.2.8.2 jruoho AcpiEvRemoveGpeReference ( 223 1.1.1.2.8.2 jruoho ACPI_GPE_EVENT_INFO *GpeEventInfo) 224 1.1.1.2.8.2 jruoho { 225 1.1.1.2.8.2 jruoho ACPI_STATUS Status = AE_OK; 226 1.1.1.2.8.2 jruoho 227 1.1.1.2.8.2 jruoho 228 1.1.1.2.8.2 jruoho ACPI_FUNCTION_TRACE (EvRemoveGpeReference); 229 1.1.1.2.8.2 jruoho 230 1.1.1.2.8.2 jruoho 231 1.1.1.2.8.2 jruoho if (!GpeEventInfo->RuntimeCount) 232 1.1.1.2.8.2 jruoho { 233 1.1.1.2.8.2 jruoho return_ACPI_STATUS (AE_LIMIT); 234 1.1.1.2.8.2 jruoho } 235 1.1.1.2.8.2 jruoho 236 1.1.1.2.8.2 jruoho GpeEventInfo->RuntimeCount--; 237 1.1.1.2.8.2 jruoho if (!GpeEventInfo->RuntimeCount) 238 1.1.1.2.8.2 jruoho { 239 1.1.1.2.8.2 jruoho /* Disable on last reference */ 240 1.1.1.2.8.2 jruoho 241 1.1.1.2.8.2 jruoho Status = AcpiEvUpdateGpeEnableMask (GpeEventInfo); 242 1.1.1.2.8.2 jruoho if (ACPI_SUCCESS (Status)) 243 1.1.1.2.8.2 jruoho { 244 1.1.1.2.8.2 jruoho Status = AcpiHwLowSetGpe (GpeEventInfo, ACPI_GPE_DISABLE); 245 1.1.1.2.8.2 jruoho } 246 1.1.1.2.8.2 jruoho 247 1.1.1.2.8.2 jruoho if (ACPI_FAILURE (Status)) 248 1.1.1.2.8.2 jruoho { 249 1.1.1.2.8.2 jruoho GpeEventInfo->RuntimeCount++; 250 1.1.1.2.8.2 jruoho } 251 1.1.1.2.8.2 jruoho } 252 1.1.1.2.8.2 jruoho 253 1.1.1.2.8.2 jruoho return_ACPI_STATUS (Status); 254 1.1.1.2.8.2 jruoho } 255 1.1.1.2.8.2 jruoho 256 1.1.1.2.8.2 jruoho 257 1.1.1.2.8.2 jruoho /******************************************************************************* 258 1.1.1.2.8.2 jruoho * 259 1.1.1.2.8.2 jruoho * FUNCTION: AcpiEvLowGetGpeInfo 260 1.1.1.2.8.2 jruoho * 261 1.1.1.2.8.2 jruoho * PARAMETERS: GpeNumber - Raw GPE number 262 1.1.1.2.8.2 jruoho * GpeBlock - A GPE info block 263 1.1.1.2.8.2 jruoho * 264 1.1.1.2.8.2 jruoho * RETURN: A GPE EventInfo struct. NULL if not a valid GPE (The GpeNumber 265 1.1.1.2.8.2 jruoho * is not within the specified GPE block) 266 1.1.1.2.8.2 jruoho * 267 1.1.1.2.8.2 jruoho * DESCRIPTION: Returns the EventInfo struct associated with this GPE. This is 268 1.1.1.2.8.2 jruoho * the low-level implementation of EvGetGpeEventInfo. 269 1.1.1.2.8.2 jruoho * 270 1.1.1.2.8.2 jruoho ******************************************************************************/ 271 1.1.1.2.8.2 jruoho 272 1.1.1.2.8.2 jruoho ACPI_GPE_EVENT_INFO * 273 1.1.1.2.8.2 jruoho AcpiEvLowGetGpeInfo ( 274 1.1.1.2.8.2 jruoho UINT32 GpeNumber, 275 1.1.1.2.8.2 jruoho ACPI_GPE_BLOCK_INFO *GpeBlock) 276 1.1.1.2.8.2 jruoho { 277 1.1.1.2.8.2 jruoho UINT32 GpeIndex; 278 1.1.1.2.8.2 jruoho 279 1.1.1.2.8.2 jruoho 280 1.1.1.2.8.2 jruoho /* 281 1.1.1.2.8.2 jruoho * Validate that the GpeNumber is within the specified GpeBlock. 282 1.1.1.2.8.2 jruoho * (Two steps) 283 1.1.1.2.8.2 jruoho */ 284 1.1.1.2.8.2 jruoho if (!GpeBlock || 285 1.1.1.2.8.2 jruoho (GpeNumber < GpeBlock->BlockBaseNumber)) 286 1.1.1.2.8.2 jruoho { 287 1.1.1.2.8.2 jruoho return (NULL); 288 1.1.1.2.8.2 jruoho } 289 1.1.1.2.8.2 jruoho 290 1.1.1.2.8.2 jruoho GpeIndex = GpeNumber - GpeBlock->BlockBaseNumber; 291 1.1.1.2.8.2 jruoho if (GpeIndex >= GpeBlock->GpeCount) 292 1.1.1.2.8.2 jruoho { 293 1.1.1.2.8.2 jruoho return (NULL); 294 1.1.1.2.8.2 jruoho } 295 1.1.1.2.8.2 jruoho 296 1.1.1.2.8.2 jruoho return (&GpeBlock->EventInfo[GpeIndex]); 297 1.1.1.2.8.2 jruoho } 298 1.1.1.2.8.2 jruoho 299 1.1.1.2.8.2 jruoho 300 1.1.1.2.8.2 jruoho /******************************************************************************* 301 1.1.1.2.8.2 jruoho * 302 1.1.1.2.8.2 jruoho * FUNCTION: AcpiEvGetGpeEventInfo 303 1.1.1.2.8.2 jruoho * 304 1.1.1.2.8.2 jruoho * PARAMETERS: GpeDevice - Device node. NULL for GPE0/GPE1 305 1.1.1.2.8.2 jruoho * GpeNumber - Raw GPE number 306 1.1.1.2.8.2 jruoho * 307 1.1.1.2.8.2 jruoho * RETURN: A GPE EventInfo struct. NULL if not a valid GPE 308 1.1.1.2.8.2 jruoho * 309 1.1.1.2.8.2 jruoho * DESCRIPTION: Returns the EventInfo struct associated with this GPE. 310 1.1.1.2.8.2 jruoho * Validates the GpeBlock and the GpeNumber 311 1.1.1.2.8.2 jruoho * 312 1.1.1.2.8.2 jruoho * Should be called only when the GPE lists are semaphore locked 313 1.1.1.2.8.2 jruoho * and not subject to change. 314 1.1.1.2.8.2 jruoho * 315 1.1.1.2.8.2 jruoho ******************************************************************************/ 316 1.1.1.2.8.2 jruoho 317 1.1.1.2.8.2 jruoho ACPI_GPE_EVENT_INFO * 318 1.1.1.2.8.2 jruoho AcpiEvGetGpeEventInfo ( 319 1.1.1.2.8.2 jruoho ACPI_HANDLE GpeDevice, 320 1.1.1.2.8.2 jruoho UINT32 GpeNumber) 321 1.1.1.2.8.2 jruoho { 322 1.1.1.2.8.2 jruoho ACPI_OPERAND_OBJECT *ObjDesc; 323 1.1.1.2.8.2 jruoho ACPI_GPE_EVENT_INFO *GpeInfo; 324 1.1.1.2.8.2 jruoho UINT32 i; 325 1.1.1.2.8.2 jruoho 326 1.1.1.2.8.2 jruoho 327 1.1.1.2.8.2 jruoho ACPI_FUNCTION_ENTRY (); 328 1.1.1.2.8.2 jruoho 329 1.1.1.2.8.2 jruoho 330 1.1.1.2.8.2 jruoho /* A NULL GpeDevice means use the FADT-defined GPE block(s) */ 331 1.1.1.2.8.2 jruoho 332 1.1.1.2.8.2 jruoho if (!GpeDevice) 333 1.1.1.2.8.2 jruoho { 334 1.1.1.2.8.2 jruoho /* Examine GPE Block 0 and 1 (These blocks are permanent) */ 335 1.1.1.2.8.2 jruoho 336 1.1.1.2.8.2 jruoho for (i = 0; i < ACPI_MAX_GPE_BLOCKS; i++) 337 1.1.1.2.8.2 jruoho { 338 1.1.1.2.8.2 jruoho GpeInfo = AcpiEvLowGetGpeInfo (GpeNumber, 339 1.1.1.2.8.2 jruoho AcpiGbl_GpeFadtBlocks[i]); 340 1.1.1.2.8.2 jruoho if (GpeInfo) 341 1.1.1.2.8.2 jruoho { 342 1.1.1.2.8.2 jruoho return (GpeInfo); 343 1.1.1.2.8.2 jruoho } 344 1.1.1.2.8.2 jruoho } 345 1.1.1.2.8.2 jruoho 346 1.1.1.2.8.2 jruoho /* The GpeNumber was not in the range of either FADT GPE block */ 347 1.1.1.2.8.2 jruoho 348 1.1.1.2.8.2 jruoho return (NULL); 349 1.1.1.2.8.2 jruoho } 350 1.1.1.2.8.2 jruoho 351 1.1.1.2.8.2 jruoho /* A Non-NULL GpeDevice means this is a GPE Block Device */ 352 1.1.1.2.8.2 jruoho 353 1.1.1.2.8.2 jruoho ObjDesc = AcpiNsGetAttachedObject ((ACPI_NAMESPACE_NODE *) GpeDevice); 354 1.1.1.2.8.2 jruoho if (!ObjDesc || 355 1.1.1.2.8.2 jruoho !ObjDesc->Device.GpeBlock) 356 1.1.1.2.8.2 jruoho { 357 1.1.1.2.8.2 jruoho return (NULL); 358 1.1.1.2.8.2 jruoho } 359 1.1.1.2.8.2 jruoho 360 1.1.1.2.8.2 jruoho return (AcpiEvLowGetGpeInfo (GpeNumber, ObjDesc->Device.GpeBlock)); 361 1.1.1.2.8.2 jruoho } 362 1.1.1.2.8.2 jruoho 363 1.1.1.2.8.2 jruoho 364 1.1.1.2.8.2 jruoho /******************************************************************************* 365 1.1.1.2.8.2 jruoho * 366 1.1.1.2.8.2 jruoho * FUNCTION: AcpiEvGpeDetect 367 1.1.1.2.8.2 jruoho * 368 1.1.1.2.8.2 jruoho * PARAMETERS: GpeXruptList - Interrupt block for this interrupt. 369 1.1.1.2.8.2 jruoho * Can have multiple GPE blocks attached. 370 1.1.1.2.8.2 jruoho * 371 1.1.1.2.8.2 jruoho * RETURN: INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED 372 1.1.1.2.8.2 jruoho * 373 1.1.1.2.8.2 jruoho * DESCRIPTION: Detect if any GP events have occurred. This function is 374 1.1.1.2.8.2 jruoho * executed at interrupt level. 375 1.1.1.2.8.2 jruoho * 376 1.1.1.2.8.2 jruoho ******************************************************************************/ 377 1.1.1.2.8.2 jruoho 378 1.1.1.2.8.2 jruoho UINT32 379 1.1.1.2.8.2 jruoho AcpiEvGpeDetect ( 380 1.1.1.2.8.2 jruoho ACPI_GPE_XRUPT_INFO *GpeXruptList) 381 1.1.1.2.8.2 jruoho { 382 1.1.1.2.8.2 jruoho ACPI_STATUS Status; 383 1.1.1.2.8.2 jruoho ACPI_GPE_BLOCK_INFO *GpeBlock; 384 1.1.1.2.8.2 jruoho ACPI_GPE_REGISTER_INFO *GpeRegisterInfo; 385 1.1.1.2.8.2 jruoho UINT32 IntStatus = ACPI_INTERRUPT_NOT_HANDLED; 386 1.1.1.2.8.2 jruoho UINT8 EnabledStatusByte; 387 1.1.1.2.8.2 jruoho UINT32 StatusReg; 388 1.1.1.2.8.2 jruoho UINT32 EnableReg; 389 1.1.1.2.8.2 jruoho ACPI_CPU_FLAGS Flags; 390 1.1.1.2.8.2 jruoho UINT32 i; 391 1.1.1.2.8.2 jruoho UINT32 j; 392 1.1.1.2.8.2 jruoho 393 1.1.1.2.8.2 jruoho 394 1.1.1.2.8.2 jruoho ACPI_FUNCTION_NAME (EvGpeDetect); 395 1.1.1.2.8.2 jruoho 396 1.1.1.2.8.2 jruoho /* Check for the case where there are no GPEs */ 397 1.1.1.2.8.2 jruoho 398 1.1.1.2.8.2 jruoho if (!GpeXruptList) 399 1.1.1.2.8.2 jruoho { 400 1.1.1.2.8.2 jruoho return (IntStatus); 401 1.1.1.2.8.2 jruoho } 402 1.1.1.2.8.2 jruoho 403 1.1.1.2.8.2 jruoho /* 404 1.1.1.2.8.2 jruoho * We need to obtain the GPE lock for both the data structs and registers 405 1.1.1.2.8.2 jruoho * Note: Not necessary to obtain the hardware lock, since the GPE 406 1.1.1.2.8.2 jruoho * registers are owned by the GpeLock. 407 1.1.1.2.8.2 jruoho */ 408 1.1.1.2.8.2 jruoho Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock); 409 1.1.1.2.8.2 jruoho 410 1.1.1.2.8.2 jruoho /* Examine all GPE blocks attached to this interrupt level */ 411 1.1.1.2.8.2 jruoho 412 1.1.1.2.8.2 jruoho GpeBlock = GpeXruptList->GpeBlockListHead; 413 1.1.1.2.8.2 jruoho while (GpeBlock) 414 1.1.1.2.8.2 jruoho { 415 1.1.1.2.8.2 jruoho /* 416 1.1.1.2.8.2 jruoho * Read all of the 8-bit GPE status and enable registers in this GPE 417 1.1.1.2.8.2 jruoho * block, saving all of them. Find all currently active GP events. 418 1.1.1.2.8.2 jruoho */ 419 1.1.1.2.8.2 jruoho for (i = 0; i < GpeBlock->RegisterCount; i++) 420 1.1.1.2.8.2 jruoho { 421 1.1.1.2.8.2 jruoho /* Get the next status/enable pair */ 422 1.1.1.2.8.2 jruoho 423 1.1.1.2.8.2 jruoho GpeRegisterInfo = &GpeBlock->RegisterInfo[i]; 424 1.1.1.2.8.2 jruoho 425 1.1.1.2.8.2 jruoho /* 426 1.1.1.2.8.2 jruoho * Optimization: If there are no GPEs enabled within this 427 1.1.1.2.8.2 jruoho * register, we can safely ignore the entire register. 428 1.1.1.2.8.2 jruoho */ 429 1.1.1.2.8.2 jruoho if (!(GpeRegisterInfo->EnableForRun | 430 1.1.1.2.8.2 jruoho GpeRegisterInfo->EnableForWake)) 431 1.1.1.2.8.2 jruoho { 432 1.1.1.2.8.2 jruoho continue; 433 1.1.1.2.8.2 jruoho } 434 1.1.1.2.8.2 jruoho 435 1.1.1.2.8.2 jruoho /* Read the Status Register */ 436 1.1.1.2.8.2 jruoho 437 1.1.1.2.8.2 jruoho Status = AcpiHwRead (&StatusReg, &GpeRegisterInfo->StatusAddress); 438 1.1.1.2.8.2 jruoho if (ACPI_FAILURE (Status)) 439 1.1.1.2.8.2 jruoho { 440 1.1.1.2.8.2 jruoho goto UnlockAndExit; 441 1.1.1.2.8.2 jruoho } 442 1.1.1.2.8.2 jruoho 443 1.1.1.2.8.2 jruoho /* Read the Enable Register */ 444 1.1.1.2.8.2 jruoho 445 1.1.1.2.8.2 jruoho Status = AcpiHwRead (&EnableReg, &GpeRegisterInfo->EnableAddress); 446 1.1.1.2.8.2 jruoho if (ACPI_FAILURE (Status)) 447 1.1.1.2.8.2 jruoho { 448 1.1.1.2.8.2 jruoho goto UnlockAndExit; 449 1.1.1.2.8.2 jruoho } 450 1.1.1.2.8.2 jruoho 451 1.1.1.2.8.2 jruoho ACPI_DEBUG_PRINT ((ACPI_DB_INTERRUPTS, 452 1.1.1.2.8.2 jruoho "Read GPE Register at GPE%02X: Status=%02X, Enable=%02X\n", 453 1.1.1.2.8.2 jruoho GpeRegisterInfo->BaseGpeNumber, StatusReg, EnableReg)); 454 1.1.1.2.8.2 jruoho 455 1.1.1.2.8.2 jruoho /* Check if there is anything active at all in this register */ 456 1.1.1.2.8.2 jruoho 457 1.1.1.2.8.2 jruoho EnabledStatusByte = (UINT8) (StatusReg & EnableReg); 458 1.1.1.2.8.2 jruoho if (!EnabledStatusByte) 459 1.1.1.2.8.2 jruoho { 460 1.1.1.2.8.2 jruoho /* No active GPEs in this register, move on */ 461 1.1.1.2.8.2 jruoho 462 1.1.1.2.8.2 jruoho continue; 463 1.1.1.2.8.2 jruoho } 464 1.1.1.2.8.2 jruoho 465 1.1.1.2.8.2 jruoho /* Now look at the individual GPEs in this byte register */ 466 1.1.1.2.8.2 jruoho 467 1.1.1.2.8.2 jruoho for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++) 468 1.1.1.2.8.2 jruoho { 469 1.1.1.2.8.2 jruoho /* Examine one GPE bit */ 470 1.1.1.2.8.2 jruoho 471 1.1.1.2.8.2 jruoho if (EnabledStatusByte & (1 << j)) 472 1.1.1.2.8.2 jruoho { 473 1.1.1.2.8.2 jruoho /* 474 1.1.1.2.8.2 jruoho * Found an active GPE. Dispatch the event to a handler 475 1.1.1.2.8.2 jruoho * or method. 476 1.1.1.2.8.2 jruoho */ 477 1.1.1.2.8.2 jruoho IntStatus |= AcpiEvGpeDispatch (GpeBlock->Node, 478 1.1.1.2.8.2 jruoho &GpeBlock->EventInfo[((ACPI_SIZE) i * 479 1.1.1.2.8.2 jruoho ACPI_GPE_REGISTER_WIDTH) + j], 480 1.1.1.2.8.2 jruoho j + GpeRegisterInfo->BaseGpeNumber); 481 1.1.1.2.8.2 jruoho } 482 1.1.1.2.8.2 jruoho } 483 1.1.1.2.8.2 jruoho } 484 1.1.1.2.8.2 jruoho 485 1.1.1.2.8.2 jruoho GpeBlock = GpeBlock->Next; 486 1.1.1.2.8.2 jruoho } 487 1.1.1.2.8.2 jruoho 488 1.1.1.2.8.2 jruoho UnlockAndExit: 489 1.1.1.2.8.2 jruoho 490 1.1.1.2.8.2 jruoho AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); 491 1.1.1.2.8.2 jruoho return (IntStatus); 492 1.1.1.2.8.2 jruoho } 493 1.1.1.2.8.2 jruoho 494 1.1.1.2.8.2 jruoho 495 1.1.1.2.8.2 jruoho /******************************************************************************* 496 1.1.1.2.8.2 jruoho * 497 1.1.1.2.8.2 jruoho * FUNCTION: AcpiEvAsynchExecuteGpeMethod 498 1.1.1.2.8.2 jruoho * 499 1.1.1.2.8.2 jruoho * PARAMETERS: Context (GpeEventInfo) - Info for this GPE 500 1.1.1.2.8.2 jruoho * 501 1.1.1.2.8.2 jruoho * RETURN: None 502 1.1.1.2.8.2 jruoho * 503 1.1.1.2.8.2 jruoho * DESCRIPTION: Perform the actual execution of a GPE control method. This 504 1.1.1.2.8.2 jruoho * function is called from an invocation of AcpiOsExecute and 505 1.1.1.2.8.2 jruoho * therefore does NOT execute at interrupt level - so that 506 1.1.1.2.8.2 jruoho * the control method itself is not executed in the context of 507 1.1.1.2.8.2 jruoho * an interrupt handler. 508 1.1.1.2.8.2 jruoho * 509 1.1.1.2.8.2 jruoho ******************************************************************************/ 510 1.1.1.2.8.2 jruoho 511 1.1.1.2.8.2 jruoho static void ACPI_SYSTEM_XFACE 512 1.1.1.2.8.2 jruoho AcpiEvAsynchExecuteGpeMethod ( 513 1.1.1.2.8.2 jruoho void *Context) 514 1.1.1.2.8.2 jruoho { 515 1.1.1.2.8.2 jruoho ACPI_GPE_EVENT_INFO *GpeEventInfo = Context; 516 1.1.1.2.8.2 jruoho ACPI_STATUS Status; 517 1.1.1.2.8.2 jruoho ACPI_GPE_EVENT_INFO *LocalGpeEventInfo; 518 1.1.1.2.8.2 jruoho ACPI_EVALUATE_INFO *Info; 519 1.1.1.2.8.2 jruoho 520 1.1.1.2.8.2 jruoho 521 1.1.1.2.8.2 jruoho ACPI_FUNCTION_TRACE (EvAsynchExecuteGpeMethod); 522 1.1.1.2.8.2 jruoho 523 1.1.1.2.8.2 jruoho 524 1.1.1.2.8.2 jruoho /* Allocate a local GPE block */ 525 1.1.1.2.8.2 jruoho 526 1.1.1.2.8.2 jruoho LocalGpeEventInfo = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_GPE_EVENT_INFO)); 527 1.1.1.2.8.2 jruoho if (!LocalGpeEventInfo) 528 1.1.1.2.8.2 jruoho { 529 1.1.1.2.8.2 jruoho ACPI_EXCEPTION ((AE_INFO, AE_NO_MEMORY, 530 1.1.1.2.8.2 jruoho "while handling a GPE")); 531 1.1.1.2.8.2 jruoho return_VOID; 532 1.1.1.2.8.2 jruoho } 533 1.1.1.2.8.2 jruoho 534 1.1.1.2.8.2 jruoho Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS); 535 1.1.1.2.8.2 jruoho if (ACPI_FAILURE (Status)) 536 1.1.1.2.8.2 jruoho { 537 1.1.1.2.8.2 jruoho return_VOID; 538 1.1.1.2.8.2 jruoho } 539 1.1.1.2.8.2 jruoho 540 1.1.1.2.8.2 jruoho /* Must revalidate the GpeNumber/GpeBlock */ 541 1.1.1.2.8.2 jruoho 542 1.1.1.2.8.2 jruoho if (!AcpiEvValidGpeEvent (GpeEventInfo)) 543 1.1.1.2.8.2 jruoho { 544 1.1.1.2.8.2 jruoho Status = AcpiUtReleaseMutex (ACPI_MTX_EVENTS); 545 1.1.1.2.8.2 jruoho return_VOID; 546 1.1.1.2.8.2 jruoho } 547 1.1.1.2.8.2 jruoho 548 1.1.1.2.8.2 jruoho /* 549 1.1.1.2.8.2 jruoho * Take a snapshot of the GPE info for this level - we copy the info to 550 1.1.1.2.8.2 jruoho * prevent a race condition with RemoveHandler/RemoveBlock. 551 1.1.1.2.8.2 jruoho */ 552 1.1.1.2.8.2 jruoho ACPI_MEMCPY (LocalGpeEventInfo, GpeEventInfo, 553 1.1.1.2.8.2 jruoho sizeof (ACPI_GPE_EVENT_INFO)); 554 1.1.1.2.8.2 jruoho 555 1.1.1.2.8.2 jruoho Status = AcpiUtReleaseMutex (ACPI_MTX_EVENTS); 556 1.1.1.2.8.2 jruoho if (ACPI_FAILURE (Status)) 557 1.1.1.2.8.2 jruoho { 558 1.1.1.2.8.2 jruoho return_VOID; 559 1.1.1.2.8.2 jruoho } 560 1.1.1.2.8.2 jruoho 561 1.1.1.2.8.2 jruoho /* Do the correct dispatch - normal method or implicit notify */ 562 1.1.1.2.8.2 jruoho 563 1.1.1.2.8.2 jruoho switch (LocalGpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) 564 1.1.1.2.8.2 jruoho { 565 1.1.1.2.8.2 jruoho case ACPI_GPE_DISPATCH_NOTIFY: 566 1.1.1.2.8.2 jruoho 567 1.1.1.2.8.2 jruoho /* 568 1.1.1.2.8.2 jruoho * Implicit notify. 569 1.1.1.2.8.2 jruoho * Dispatch a DEVICE_WAKE notify to the appropriate handler. 570 1.1.1.2.8.2 jruoho * NOTE: the request is queued for execution after this method 571 1.1.1.2.8.2 jruoho * completes. The notify handlers are NOT invoked synchronously 572 1.1.1.2.8.2 jruoho * from this thread -- because handlers may in turn run other 573 1.1.1.2.8.2 jruoho * control methods. 574 1.1.1.2.8.2 jruoho */ 575 1.1.1.2.8.2 jruoho Status = AcpiEvQueueNotifyRequest ( 576 1.1.1.2.8.2 jruoho LocalGpeEventInfo->Dispatch.DeviceNode, 577 1.1.1.2.8.2 jruoho ACPI_NOTIFY_DEVICE_WAKE); 578 1.1.1.2.8.2 jruoho break; 579 1.1.1.2.8.2 jruoho 580 1.1.1.2.8.2 jruoho case ACPI_GPE_DISPATCH_METHOD: 581 1.1.1.2.8.2 jruoho 582 1.1.1.2.8.2 jruoho /* Allocate the evaluation information block */ 583 1.1.1.2.8.2 jruoho 584 1.1.1.2.8.2 jruoho Info = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EVALUATE_INFO)); 585 1.1.1.2.8.2 jruoho if (!Info) 586 1.1.1.2.8.2 jruoho { 587 1.1.1.2.8.2 jruoho Status = AE_NO_MEMORY; 588 1.1.1.2.8.2 jruoho } 589 1.1.1.2.8.2 jruoho else 590 1.1.1.2.8.2 jruoho { 591 1.1.1.2.8.2 jruoho /* 592 1.1.1.2.8.2 jruoho * Invoke the GPE Method (_Lxx, _Exx) i.e., evaluate the 593 1.1.1.2.8.2 jruoho * _Lxx/_Exx control method that corresponds to this GPE 594 1.1.1.2.8.2 jruoho */ 595 1.1.1.2.8.2 jruoho Info->PrefixNode = LocalGpeEventInfo->Dispatch.MethodNode; 596 1.1.1.2.8.2 jruoho Info->Flags = ACPI_IGNORE_RETURN_VALUE; 597 1.1.1.2.8.2 jruoho 598 1.1.1.2.8.2 jruoho Status = AcpiNsEvaluate (Info); 599 1.1.1.2.8.2 jruoho ACPI_FREE (Info); 600 1.1.1.2.8.2 jruoho } 601 1.1.1.2.8.2 jruoho 602 1.1.1.2.8.2 jruoho if (ACPI_FAILURE (Status)) 603 1.1.1.2.8.2 jruoho { 604 1.1.1.2.8.2 jruoho ACPI_EXCEPTION ((AE_INFO, Status, 605 1.1.1.2.8.2 jruoho "while evaluating GPE method [%4.4s]", 606 1.1.1.2.8.2 jruoho AcpiUtGetNodeName (LocalGpeEventInfo->Dispatch.MethodNode))); 607 1.1.1.2.8.2 jruoho } 608 1.1.1.2.8.2 jruoho 609 1.1.1.2.8.2 jruoho break; 610 1.1.1.2.8.2 jruoho 611 1.1.1.2.8.2 jruoho default: 612 1.1.1.2.8.2 jruoho return_VOID; /* Should never happen */ 613 1.1.1.2.8.2 jruoho } 614 1.1.1.2.8.2 jruoho 615 1.1.1.2.8.2 jruoho /* Defer enabling of GPE until all notify handlers are done */ 616 1.1.1.2.8.2 jruoho 617 1.1.1.2.8.2 jruoho Status = AcpiOsExecute (OSL_NOTIFY_HANDLER, 618 1.1.1.2.8.2 jruoho AcpiEvAsynchEnableGpe, LocalGpeEventInfo); 619 1.1.1.2.8.2 jruoho if (ACPI_FAILURE (Status)) 620 1.1.1.2.8.2 jruoho { 621 1.1.1.2.8.2 jruoho ACPI_FREE (LocalGpeEventInfo); 622 1.1.1.2.8.2 jruoho } 623 1.1.1.2.8.2 jruoho return_VOID; 624 1.1.1.2.8.2 jruoho } 625 1.1.1.2.8.2 jruoho 626 1.1.1.2.8.2 jruoho 627 1.1.1.2.8.2 jruoho /******************************************************************************* 628 1.1.1.2.8.2 jruoho * 629 1.1.1.2.8.2 jruoho * FUNCTION: AcpiEvAsynchEnableGpe 630 1.1.1.2.8.2 jruoho * 631 1.1.1.2.8.2 jruoho * PARAMETERS: Context (GpeEventInfo) - Info for this GPE 632 1.1.1.2.8.2 jruoho * Callback from AcpiOsExecute 633 1.1.1.2.8.2 jruoho * 634 1.1.1.2.8.2 jruoho * RETURN: None 635 1.1.1.2.8.2 jruoho * 636 1.1.1.2.8.2 jruoho * DESCRIPTION: Asynchronous clear/enable for GPE. This allows the GPE to 637 1.1.1.2.8.2 jruoho * complete (i.e., finish execution of Notify) 638 1.1.1.2.8.2 jruoho * 639 1.1.1.2.8.2 jruoho ******************************************************************************/ 640 1.1.1.2.8.2 jruoho 641 1.1.1.2.8.2 jruoho static void ACPI_SYSTEM_XFACE 642 1.1.1.2.8.2 jruoho AcpiEvAsynchEnableGpe ( 643 1.1.1.2.8.2 jruoho void *Context) 644 1.1.1.2.8.2 jruoho { 645 1.1.1.2.8.2 jruoho ACPI_GPE_EVENT_INFO *GpeEventInfo = Context; 646 1.1.1.2.8.2 jruoho 647 1.1.1.2.8.2 jruoho 648 1.1.1.2.8.2 jruoho (void) AcpiEvFinishGpe (GpeEventInfo); 649 1.1.1.2.8.2 jruoho 650 1.1.1.2.8.2 jruoho ACPI_FREE (GpeEventInfo); 651 1.1.1.2.8.2 jruoho return; 652 1.1.1.2.8.2 jruoho } 653 1.1.1.2.8.2 jruoho 654 1.1.1.2.8.2 jruoho 655 1.1.1.2.8.2 jruoho /******************************************************************************* 656 1.1.1.2.8.2 jruoho * 657 1.1.1.2.8.2 jruoho * FUNCTION: AcpiEvFinishGpe 658 1.1.1.2.8.2 jruoho * 659 1.1.1.2.8.2 jruoho * PARAMETERS: GpeEventInfo - Info for this GPE 660 1.1.1.2.8.2 jruoho * 661 1.1.1.2.8.2 jruoho * RETURN: Status 662 1.1.1.2.8.2 jruoho * 663 1.1.1.2.8.2 jruoho * DESCRIPTION: Clear/Enable a GPE. Common code that is used after execution 664 1.1.1.2.8.2 jruoho * of a GPE method or a synchronous or asynchronous GPE handler. 665 1.1.1.2.8.2 jruoho * 666 1.1.1.2.8.2 jruoho ******************************************************************************/ 667 1.1.1.2.8.2 jruoho 668 1.1.1.2.8.2 jruoho ACPI_STATUS 669 1.1.1.2.8.2 jruoho AcpiEvFinishGpe ( 670 1.1.1.2.8.2 jruoho ACPI_GPE_EVENT_INFO *GpeEventInfo) 671 1.1.1.2.8.2 jruoho { 672 1.1.1.2.8.2 jruoho ACPI_STATUS Status; 673 1.1.1.2.8.2 jruoho 674 1.1.1.2.8.2 jruoho 675 1.1.1.2.8.2 jruoho if ((GpeEventInfo->Flags & ACPI_GPE_XRUPT_TYPE_MASK) == 676 1.1.1.2.8.2 jruoho ACPI_GPE_LEVEL_TRIGGERED) 677 1.1.1.2.8.2 jruoho { 678 1.1.1.2.8.2 jruoho /* 679 1.1.1.2.8.2 jruoho * GPE is level-triggered, we clear the GPE status bit after 680 1.1.1.2.8.2 jruoho * handling the event. 681 1.1.1.2.8.2 jruoho */ 682 1.1.1.2.8.2 jruoho Status = AcpiHwClearGpe (GpeEventInfo); 683 1.1.1.2.8.2 jruoho if (ACPI_FAILURE (Status)) 684 1.1.1.2.8.2 jruoho { 685 1.1.1.2.8.2 jruoho return (Status); 686 1.1.1.2.8.2 jruoho } 687 1.1.1.2.8.2 jruoho } 688 1.1.1.2.8.2 jruoho 689 1.1.1.2.8.2 jruoho /* 690 1.1.1.2.8.2 jruoho * Enable this GPE, conditionally. This means that the GPE will 691 1.1.1.2.8.2 jruoho * only be physically enabled if the EnableForRun bit is set 692 1.1.1.2.8.2 jruoho * in the EventInfo. 693 1.1.1.2.8.2 jruoho */ 694 1.1.1.2.8.2 jruoho (void) AcpiHwLowSetGpe (GpeEventInfo, ACPI_GPE_CONDITIONAL_ENABLE); 695 1.1.1.2.8.2 jruoho return (AE_OK); 696 1.1.1.2.8.2 jruoho } 697 1.1.1.2.8.2 jruoho 698 1.1.1.2.8.2 jruoho 699 1.1.1.2.8.2 jruoho /******************************************************************************* 700 1.1.1.2.8.2 jruoho * 701 1.1.1.2.8.2 jruoho * FUNCTION: AcpiEvGpeDispatch 702 1.1.1.2.8.2 jruoho * 703 1.1.1.2.8.2 jruoho * PARAMETERS: GpeDevice - Device node. NULL for GPE0/GPE1 704 1.1.1.2.8.2 jruoho * GpeEventInfo - Info for this GPE 705 1.1.1.2.8.2 jruoho * GpeNumber - Number relative to the parent GPE block 706 1.1.1.2.8.2 jruoho * 707 1.1.1.2.8.2 jruoho * RETURN: INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED 708 1.1.1.2.8.2 jruoho * 709 1.1.1.2.8.2 jruoho * DESCRIPTION: Dispatch a General Purpose Event to either a function (e.g. EC) 710 1.1.1.2.8.2 jruoho * or method (e.g. _Lxx/_Exx) handler. 711 1.1.1.2.8.2 jruoho * 712 1.1.1.2.8.2 jruoho * This function executes at interrupt level. 713 1.1.1.2.8.2 jruoho * 714 1.1.1.2.8.2 jruoho ******************************************************************************/ 715 1.1.1.2.8.2 jruoho 716 1.1.1.2.8.2 jruoho UINT32 717 1.1.1.2.8.2 jruoho AcpiEvGpeDispatch ( 718 1.1.1.2.8.2 jruoho ACPI_NAMESPACE_NODE *GpeDevice, 719 1.1.1.2.8.2 jruoho ACPI_GPE_EVENT_INFO *GpeEventInfo, 720 1.1.1.2.8.2 jruoho UINT32 GpeNumber) 721 1.1.1.2.8.2 jruoho { 722 1.1.1.2.8.2 jruoho ACPI_STATUS Status; 723 1.1.1.2.8.2 jruoho UINT32 ReturnValue; 724 1.1.1.2.8.2 jruoho 725 1.1.1.2.8.2 jruoho 726 1.1.1.2.8.2 jruoho ACPI_FUNCTION_TRACE (EvGpeDispatch); 727 1.1.1.2.8.2 jruoho 728 1.1.1.2.8.2 jruoho 729 1.1.1.2.8.2 jruoho /* Invoke global event handler if present */ 730 1.1.1.2.8.2 jruoho 731 1.1.1.2.8.2 jruoho AcpiGpeCount++; 732 1.1.1.2.8.2 jruoho if (AcpiGbl_GlobalEventHandler) 733 1.1.1.2.8.2 jruoho { 734 1.1.1.2.8.2 jruoho AcpiGbl_GlobalEventHandler (ACPI_EVENT_TYPE_GPE, GpeDevice, 735 1.1.1.2.8.2 jruoho GpeNumber, AcpiGbl_GlobalEventHandlerContext); 736 1.1.1.2.8.2 jruoho } 737 1.1.1.2.8.2 jruoho 738 1.1.1.2.8.2 jruoho /* 739 1.1.1.2.8.2 jruoho * If edge-triggered, clear the GPE status bit now. Note that 740 1.1.1.2.8.2 jruoho * level-triggered events are cleared after the GPE is serviced. 741 1.1.1.2.8.2 jruoho */ 742 1.1.1.2.8.2 jruoho if ((GpeEventInfo->Flags & ACPI_GPE_XRUPT_TYPE_MASK) == 743 1.1.1.2.8.2 jruoho ACPI_GPE_EDGE_TRIGGERED) 744 1.1.1.2.8.2 jruoho { 745 1.1.1.2.8.2 jruoho Status = AcpiHwClearGpe (GpeEventInfo); 746 1.1.1.2.8.2 jruoho if (ACPI_FAILURE (Status)) 747 1.1.1.2.8.2 jruoho { 748 1.1.1.2.8.2 jruoho ACPI_EXCEPTION ((AE_INFO, Status, 749 1.1.1.2.8.2 jruoho "Unable to clear GPE%02X", GpeNumber)); 750 1.1.1.2.8.2 jruoho return_UINT32 (ACPI_INTERRUPT_NOT_HANDLED); 751 1.1.1.2.8.2 jruoho } 752 1.1.1.2.8.2 jruoho } 753 1.1.1.2.8.2 jruoho 754 1.1.1.2.8.2 jruoho /* 755 1.1.1.2.8.2 jruoho * Always disable the GPE so that it does not keep firing before 756 1.1.1.2.8.2 jruoho * any asynchronous activity completes (either from the execution 757 1.1.1.2.8.2 jruoho * of a GPE method or an asynchronous GPE handler.) 758 1.1.1.2.8.2 jruoho * 759 1.1.1.2.8.2 jruoho * If there is no handler or method to run, just disable the 760 1.1.1.2.8.2 jruoho * GPE and leave it disabled permanently to prevent further such 761 1.1.1.2.8.2 jruoho * pointless events from firing. 762 1.1.1.2.8.2 jruoho */ 763 1.1.1.2.8.2 jruoho Status = AcpiHwLowSetGpe (GpeEventInfo, ACPI_GPE_DISABLE); 764 1.1.1.2.8.2 jruoho if (ACPI_FAILURE (Status)) 765 1.1.1.2.8.2 jruoho { 766 1.1.1.2.8.2 jruoho ACPI_EXCEPTION ((AE_INFO, Status, 767 1.1.1.2.8.2 jruoho "Unable to disable GPE%02X", GpeNumber)); 768 1.1.1.2.8.2 jruoho return_UINT32 (ACPI_INTERRUPT_NOT_HANDLED); 769 1.1.1.2.8.2 jruoho } 770 1.1.1.2.8.2 jruoho 771 1.1.1.2.8.2 jruoho /* 772 1.1.1.2.8.2 jruoho * Dispatch the GPE to either an installed handler or the control 773 1.1.1.2.8.2 jruoho * method associated with this GPE (_Lxx or _Exx). If a handler 774 1.1.1.2.8.2 jruoho * exists, we invoke it and do not attempt to run the method. 775 1.1.1.2.8.2 jruoho * If there is neither a handler nor a method, leave the GPE 776 1.1.1.2.8.2 jruoho * disabled. 777 1.1.1.2.8.2 jruoho */ 778 1.1.1.2.8.2 jruoho switch (GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) 779 1.1.1.2.8.2 jruoho { 780 1.1.1.2.8.2 jruoho case ACPI_GPE_DISPATCH_HANDLER: 781 1.1.1.2.8.2 jruoho 782 1.1.1.2.8.2 jruoho /* Invoke the installed handler (at interrupt level) */ 783 1.1.1.2.8.2 jruoho 784 1.1.1.2.8.2 jruoho ReturnValue = GpeEventInfo->Dispatch.Handler->Address ( 785 1.1.1.2.8.2 jruoho GpeDevice, GpeNumber, 786 1.1.1.2.8.2 jruoho GpeEventInfo->Dispatch.Handler->Context); 787 1.1.1.2.8.2 jruoho 788 1.1.1.2.8.2 jruoho /* If requested, clear (if level-triggered) and reenable the GPE */ 789 1.1.1.2.8.2 jruoho 790 1.1.1.2.8.2 jruoho if (ReturnValue & ACPI_REENABLE_GPE) 791 1.1.1.2.8.2 jruoho { 792 1.1.1.2.8.2 jruoho (void) AcpiEvFinishGpe (GpeEventInfo); 793 1.1.1.2.8.2 jruoho } 794 1.1.1.2.8.2 jruoho break; 795 1.1.1.2.8.2 jruoho 796 1.1.1.2.8.2 jruoho case ACPI_GPE_DISPATCH_METHOD: 797 1.1.1.2.8.2 jruoho case ACPI_GPE_DISPATCH_NOTIFY: 798 1.1.1.2.8.2 jruoho 799 1.1.1.2.8.2 jruoho /* 800 1.1.1.2.8.2 jruoho * Execute the method associated with the GPE 801 1.1.1.2.8.2 jruoho * NOTE: Level-triggered GPEs are cleared after the method completes. 802 1.1.1.2.8.2 jruoho */ 803 1.1.1.2.8.2 jruoho Status = AcpiOsExecute (OSL_GPE_HANDLER, 804 1.1.1.2.8.2 jruoho AcpiEvAsynchExecuteGpeMethod, GpeEventInfo); 805 1.1.1.2.8.2 jruoho if (ACPI_FAILURE (Status)) 806 1.1.1.2.8.2 jruoho { 807 1.1.1.2.8.2 jruoho ACPI_EXCEPTION ((AE_INFO, Status, 808 1.1.1.2.8.2 jruoho "Unable to queue handler for GPE%02X - event disabled", 809 1.1.1.2.8.2 jruoho GpeNumber)); 810 1.1.1.2.8.2 jruoho } 811 1.1.1.2.8.2 jruoho break; 812 1.1.1.2.8.2 jruoho 813 1.1.1.2.8.2 jruoho default: 814 1.1.1.2.8.2 jruoho 815 1.1.1.2.8.2 jruoho /* 816 1.1.1.2.8.2 jruoho * No handler or method to run! 817 1.1.1.2.8.2 jruoho * 03/2010: This case should no longer be possible. We will not allow 818 1.1.1.2.8.2 jruoho * a GPE to be enabled if it has no handler or method. 819 1.1.1.2.8.2 jruoho */ 820 1.1.1.2.8.2 jruoho ACPI_ERROR ((AE_INFO, 821 1.1.1.2.8.2 jruoho "No handler or method for GPE%02X, disabling event", 822 1.1.1.2.8.2 jruoho GpeNumber)); 823 1.1.1.2.8.2 jruoho break; 824 1.1.1.2.8.2 jruoho } 825 1.1.1.2.8.2 jruoho 826 1.1.1.2.8.2 jruoho return_UINT32 (ACPI_INTERRUPT_HANDLED); 827 1.1.1.2.8.2 jruoho } 828 1.1.1.2.8.2 jruoho 829
Indexes created Sun Oct 26 21:10:03 GMT 2025