Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Module Name: evgpe - General Purpose Event handling and dispatch |
| 4 | * |
| 5 | *****************************************************************************/ |
| 6 | |
| 7 | /* |
Bob Moore | 4a90c7e | 2006-01-13 16:22:00 -0500 | [diff] [blame] | 8 | * Copyright (C) 2000 - 2006, R. Byron Moore |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | * All rights reserved. |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or without |
| 12 | * modification, are permitted provided that the following conditions |
| 13 | * are met: |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions, and the following disclaimer, |
| 16 | * without modification. |
| 17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| 18 | * substantially similar to the "NO WARRANTY" disclaimer below |
| 19 | * ("Disclaimer") and any redistribution must be conditioned upon |
| 20 | * including a substantially similar Disclaimer requirement for further |
| 21 | * binary redistribution. |
| 22 | * 3. Neither the names of the above-listed copyright holders nor the names |
| 23 | * of any contributors may be used to endorse or promote products derived |
| 24 | * from this software without specific prior written permission. |
| 25 | * |
| 26 | * Alternatively, this software may be distributed under the terms of the |
| 27 | * GNU General Public License ("GPL") version 2 as published by the Free |
| 28 | * Software Foundation. |
| 29 | * |
| 30 | * NO WARRANTY |
| 31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| 34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| 40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 41 | * POSSIBILITY OF SUCH DAMAGES. |
| 42 | */ |
| 43 | |
| 44 | #include <acpi/acpi.h> |
| 45 | #include <acpi/acevents.h> |
| 46 | #include <acpi/acnamesp.h> |
| 47 | |
| 48 | #define _COMPONENT ACPI_EVENTS |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 49 | ACPI_MODULE_NAME("evgpe") |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 51 | /* Local prototypes */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 52 | static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | |
| 54 | /******************************************************************************* |
| 55 | * |
| 56 | * FUNCTION: acpi_ev_set_gpe_type |
| 57 | * |
| 58 | * PARAMETERS: gpe_event_info - GPE to set |
| 59 | * Type - New type |
| 60 | * |
| 61 | * RETURN: Status |
| 62 | * |
| 63 | * DESCRIPTION: Sets the new type for the GPE (wake, run, or wake/run) |
| 64 | * |
| 65 | ******************************************************************************/ |
| 66 | |
| 67 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 68 | acpi_ev_set_gpe_type(struct acpi_gpe_event_info *gpe_event_info, u8 type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 70 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 72 | ACPI_FUNCTION_TRACE("ev_set_gpe_type"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | |
| 74 | /* Validate type and update register enable masks */ |
| 75 | |
| 76 | switch (type) { |
| 77 | case ACPI_GPE_TYPE_WAKE: |
| 78 | case ACPI_GPE_TYPE_RUNTIME: |
| 79 | case ACPI_GPE_TYPE_WAKE_RUN: |
| 80 | break; |
| 81 | |
| 82 | default: |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 83 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | } |
| 85 | |
| 86 | /* Disable the GPE if currently enabled */ |
| 87 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 88 | status = acpi_ev_disable_gpe(gpe_event_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | |
| 90 | /* Type was validated above */ |
| 91 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 92 | gpe_event_info->flags &= ~ACPI_GPE_TYPE_MASK; /* Clear type bits */ |
| 93 | gpe_event_info->flags |= type; /* Insert type */ |
| 94 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | } |
| 96 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | /******************************************************************************* |
| 98 | * |
| 99 | * FUNCTION: acpi_ev_update_gpe_enable_masks |
| 100 | * |
| 101 | * PARAMETERS: gpe_event_info - GPE to update |
| 102 | * Type - What to do: ACPI_GPE_DISABLE or |
| 103 | * ACPI_GPE_ENABLE |
| 104 | * |
| 105 | * RETURN: Status |
| 106 | * |
| 107 | * DESCRIPTION: Updates GPE register enable masks based on the GPE type |
| 108 | * |
| 109 | ******************************************************************************/ |
| 110 | |
| 111 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 112 | acpi_ev_update_gpe_enable_masks(struct acpi_gpe_event_info *gpe_event_info, |
| 113 | u8 type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 115 | struct acpi_gpe_register_info *gpe_register_info; |
| 116 | u8 register_bit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 118 | ACPI_FUNCTION_TRACE("ev_update_gpe_enable_masks"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | |
| 120 | gpe_register_info = gpe_event_info->register_info; |
| 121 | if (!gpe_register_info) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 122 | return_ACPI_STATUS(AE_NOT_EXIST); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | } |
| 124 | register_bit = gpe_event_info->register_bit; |
| 125 | |
| 126 | /* 1) Disable case. Simply clear all enable bits */ |
| 127 | |
| 128 | if (type == ACPI_GPE_DISABLE) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 129 | ACPI_CLEAR_BIT(gpe_register_info->enable_for_wake, |
| 130 | register_bit); |
| 131 | ACPI_CLEAR_BIT(gpe_register_info->enable_for_run, register_bit); |
| 132 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | } |
| 134 | |
| 135 | /* 2) Enable case. Set/Clear the appropriate enable bits */ |
| 136 | |
| 137 | switch (gpe_event_info->flags & ACPI_GPE_TYPE_MASK) { |
| 138 | case ACPI_GPE_TYPE_WAKE: |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 139 | ACPI_SET_BIT(gpe_register_info->enable_for_wake, register_bit); |
| 140 | ACPI_CLEAR_BIT(gpe_register_info->enable_for_run, register_bit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | break; |
| 142 | |
| 143 | case ACPI_GPE_TYPE_RUNTIME: |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 144 | ACPI_CLEAR_BIT(gpe_register_info->enable_for_wake, |
| 145 | register_bit); |
| 146 | ACPI_SET_BIT(gpe_register_info->enable_for_run, register_bit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | break; |
| 148 | |
| 149 | case ACPI_GPE_TYPE_WAKE_RUN: |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 150 | ACPI_SET_BIT(gpe_register_info->enable_for_wake, register_bit); |
| 151 | ACPI_SET_BIT(gpe_register_info->enable_for_run, register_bit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | break; |
| 153 | |
| 154 | default: |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 155 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | } |
| 157 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 158 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | } |
| 160 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | /******************************************************************************* |
| 162 | * |
| 163 | * FUNCTION: acpi_ev_enable_gpe |
| 164 | * |
| 165 | * PARAMETERS: gpe_event_info - GPE to enable |
| 166 | * write_to_hardware - Enable now, or just mark data structs |
| 167 | * (WAKE GPEs should be deferred) |
| 168 | * |
| 169 | * RETURN: Status |
| 170 | * |
| 171 | * DESCRIPTION: Enable a GPE based on the GPE type |
| 172 | * |
| 173 | ******************************************************************************/ |
| 174 | |
| 175 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 176 | acpi_ev_enable_gpe(struct acpi_gpe_event_info *gpe_event_info, |
| 177 | u8 write_to_hardware) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 179 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 181 | ACPI_FUNCTION_TRACE("ev_enable_gpe"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | |
| 183 | /* Make sure HW enable masks are updated */ |
| 184 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 185 | status = |
| 186 | acpi_ev_update_gpe_enable_masks(gpe_event_info, ACPI_GPE_ENABLE); |
| 187 | if (ACPI_FAILURE(status)) { |
| 188 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | } |
| 190 | |
| 191 | /* Mark wake-enabled or HW enable, or both */ |
| 192 | |
| 193 | switch (gpe_event_info->flags & ACPI_GPE_TYPE_MASK) { |
| 194 | case ACPI_GPE_TYPE_WAKE: |
| 195 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 196 | ACPI_SET_BIT(gpe_event_info->flags, ACPI_GPE_WAKE_ENABLED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | break; |
| 198 | |
| 199 | case ACPI_GPE_TYPE_WAKE_RUN: |
| 200 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 201 | ACPI_SET_BIT(gpe_event_info->flags, ACPI_GPE_WAKE_ENABLED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | |
| 203 | /*lint -fallthrough */ |
| 204 | |
| 205 | case ACPI_GPE_TYPE_RUNTIME: |
| 206 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 207 | ACPI_SET_BIT(gpe_event_info->flags, ACPI_GPE_RUN_ENABLED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | |
| 209 | if (write_to_hardware) { |
| 210 | /* Clear the GPE (of stale events), then enable it */ |
| 211 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 212 | status = acpi_hw_clear_gpe(gpe_event_info); |
| 213 | if (ACPI_FAILURE(status)) { |
| 214 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | } |
| 216 | |
| 217 | /* Enable the requested runtime GPE */ |
| 218 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 219 | status = acpi_hw_write_gpe_enable_reg(gpe_event_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | } |
| 221 | break; |
| 222 | |
| 223 | default: |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 224 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | } |
| 226 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 227 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | } |
| 229 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | /******************************************************************************* |
| 231 | * |
| 232 | * FUNCTION: acpi_ev_disable_gpe |
| 233 | * |
| 234 | * PARAMETERS: gpe_event_info - GPE to disable |
| 235 | * |
| 236 | * RETURN: Status |
| 237 | * |
| 238 | * DESCRIPTION: Disable a GPE based on the GPE type |
| 239 | * |
| 240 | ******************************************************************************/ |
| 241 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 242 | acpi_status acpi_ev_disable_gpe(struct acpi_gpe_event_info *gpe_event_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 244 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 246 | ACPI_FUNCTION_TRACE("ev_disable_gpe"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | |
| 248 | if (!(gpe_event_info->flags & ACPI_GPE_ENABLE_MASK)) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 249 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | } |
| 251 | |
| 252 | /* Make sure HW enable masks are updated */ |
| 253 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 254 | status = |
| 255 | acpi_ev_update_gpe_enable_masks(gpe_event_info, ACPI_GPE_DISABLE); |
| 256 | if (ACPI_FAILURE(status)) { |
| 257 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | } |
| 259 | |
| 260 | /* Mark wake-disabled or HW disable, or both */ |
| 261 | |
| 262 | switch (gpe_event_info->flags & ACPI_GPE_TYPE_MASK) { |
| 263 | case ACPI_GPE_TYPE_WAKE: |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 264 | ACPI_CLEAR_BIT(gpe_event_info->flags, ACPI_GPE_WAKE_ENABLED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | break; |
| 266 | |
| 267 | case ACPI_GPE_TYPE_WAKE_RUN: |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 268 | ACPI_CLEAR_BIT(gpe_event_info->flags, ACPI_GPE_WAKE_ENABLED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | |
| 270 | /*lint -fallthrough */ |
| 271 | |
| 272 | case ACPI_GPE_TYPE_RUNTIME: |
| 273 | |
| 274 | /* Disable the requested runtime GPE */ |
| 275 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 276 | ACPI_CLEAR_BIT(gpe_event_info->flags, ACPI_GPE_RUN_ENABLED); |
| 277 | status = acpi_hw_write_gpe_enable_reg(gpe_event_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | break; |
| 279 | |
| 280 | default: |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 281 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | } |
| 283 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 284 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | } |
| 286 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | /******************************************************************************* |
| 288 | * |
| 289 | * FUNCTION: acpi_ev_get_gpe_event_info |
| 290 | * |
| 291 | * PARAMETERS: gpe_device - Device node. NULL for GPE0/GPE1 |
| 292 | * gpe_number - Raw GPE number |
| 293 | * |
| 294 | * RETURN: A GPE event_info struct. NULL if not a valid GPE |
| 295 | * |
| 296 | * DESCRIPTION: Returns the event_info struct associated with this GPE. |
| 297 | * Validates the gpe_block and the gpe_number |
| 298 | * |
| 299 | * Should be called only when the GPE lists are semaphore locked |
| 300 | * and not subject to change. |
| 301 | * |
| 302 | ******************************************************************************/ |
| 303 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 304 | struct acpi_gpe_event_info *acpi_ev_get_gpe_event_info(acpi_handle gpe_device, |
| 305 | u32 gpe_number) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 307 | union acpi_operand_object *obj_desc; |
| 308 | struct acpi_gpe_block_info *gpe_block; |
| 309 | acpi_native_uint i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 311 | ACPI_FUNCTION_ENTRY(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | |
| 313 | /* A NULL gpe_block means use the FADT-defined GPE block(s) */ |
| 314 | |
| 315 | if (!gpe_device) { |
| 316 | /* Examine GPE Block 0 and 1 (These blocks are permanent) */ |
| 317 | |
| 318 | for (i = 0; i < ACPI_MAX_GPE_BLOCKS; i++) { |
| 319 | gpe_block = acpi_gbl_gpe_fadt_blocks[i]; |
| 320 | if (gpe_block) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 321 | if ((gpe_number >= gpe_block->block_base_number) |
| 322 | && (gpe_number < |
| 323 | gpe_block->block_base_number + |
| 324 | (gpe_block->register_count * 8))) { |
| 325 | return (&gpe_block-> |
| 326 | event_info[gpe_number - |
| 327 | gpe_block-> |
| 328 | block_base_number]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | } |
| 330 | } |
| 331 | } |
| 332 | |
| 333 | /* The gpe_number was not in the range of either FADT GPE block */ |
| 334 | |
| 335 | return (NULL); |
| 336 | } |
| 337 | |
| 338 | /* A Non-NULL gpe_device means this is a GPE Block Device */ |
| 339 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 340 | obj_desc = |
| 341 | acpi_ns_get_attached_object((struct acpi_namespace_node *) |
| 342 | gpe_device); |
| 343 | if (!obj_desc || !obj_desc->device.gpe_block) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | return (NULL); |
| 345 | } |
| 346 | |
| 347 | gpe_block = obj_desc->device.gpe_block; |
| 348 | |
| 349 | if ((gpe_number >= gpe_block->block_base_number) && |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 350 | (gpe_number < |
| 351 | gpe_block->block_base_number + (gpe_block->register_count * 8))) { |
| 352 | return (&gpe_block-> |
| 353 | event_info[gpe_number - gpe_block->block_base_number]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | } |
| 355 | |
| 356 | return (NULL); |
| 357 | } |
| 358 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | /******************************************************************************* |
| 360 | * |
| 361 | * FUNCTION: acpi_ev_gpe_detect |
| 362 | * |
| 363 | * PARAMETERS: gpe_xrupt_list - Interrupt block for this interrupt. |
| 364 | * Can have multiple GPE blocks attached. |
| 365 | * |
| 366 | * RETURN: INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED |
| 367 | * |
| 368 | * DESCRIPTION: Detect if any GP events have occurred. This function is |
| 369 | * executed at interrupt level. |
| 370 | * |
| 371 | ******************************************************************************/ |
| 372 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 373 | u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 375 | acpi_status status; |
| 376 | struct acpi_gpe_block_info *gpe_block; |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 377 | struct acpi_gpe_register_info *gpe_register_info; |
| 378 | u32 int_status = ACPI_INTERRUPT_NOT_HANDLED; |
| 379 | u8 enabled_status_byte; |
| 380 | u32 status_reg; |
| 381 | u32 enable_reg; |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 382 | acpi_cpu_flags flags; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 383 | acpi_native_uint i; |
| 384 | acpi_native_uint j; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 386 | ACPI_FUNCTION_NAME("ev_gpe_detect"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | |
| 388 | /* Check for the case where there are no GPEs */ |
| 389 | |
| 390 | if (!gpe_xrupt_list) { |
| 391 | return (int_status); |
| 392 | } |
| 393 | |
| 394 | /* Examine all GPE blocks attached to this interrupt level */ |
| 395 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 396 | flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | gpe_block = gpe_xrupt_list->gpe_block_list_head; |
| 398 | while (gpe_block) { |
| 399 | /* |
| 400 | * Read all of the 8-bit GPE status and enable registers |
| 401 | * in this GPE block, saving all of them. |
| 402 | * Find all currently active GP events. |
| 403 | */ |
| 404 | for (i = 0; i < gpe_block->register_count; i++) { |
| 405 | /* Get the next status/enable pair */ |
| 406 | |
| 407 | gpe_register_info = &gpe_block->register_info[i]; |
| 408 | |
| 409 | /* Read the Status Register */ |
| 410 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 411 | status = |
| 412 | acpi_hw_low_level_read(ACPI_GPE_REGISTER_WIDTH, |
| 413 | &status_reg, |
| 414 | &gpe_register_info-> |
| 415 | status_address); |
| 416 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | goto unlock_and_exit; |
| 418 | } |
| 419 | |
| 420 | /* Read the Enable Register */ |
| 421 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 422 | status = |
| 423 | acpi_hw_low_level_read(ACPI_GPE_REGISTER_WIDTH, |
| 424 | &enable_reg, |
| 425 | &gpe_register_info-> |
| 426 | enable_address); |
| 427 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | goto unlock_and_exit; |
| 429 | } |
| 430 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 431 | ACPI_DEBUG_PRINT((ACPI_DB_INTERRUPTS, |
| 432 | "Read GPE Register at GPE%X: Status=%02X, Enable=%02X\n", |
| 433 | gpe_register_info->base_gpe_number, |
| 434 | status_reg, enable_reg)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 436 | /* Check if there is anything active at all in this register */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | |
| 438 | enabled_status_byte = (u8) (status_reg & enable_reg); |
| 439 | if (!enabled_status_byte) { |
| 440 | /* No active GPEs in this register, move on */ |
| 441 | |
| 442 | continue; |
| 443 | } |
| 444 | |
| 445 | /* Now look at the individual GPEs in this byte register */ |
| 446 | |
| 447 | for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++) { |
| 448 | /* Examine one GPE bit */ |
| 449 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 450 | if (enabled_status_byte & |
| 451 | acpi_gbl_decode_to8bit[j]) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | /* |
| 453 | * Found an active GPE. Dispatch the event to a handler |
| 454 | * or method. |
| 455 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 456 | int_status |= |
| 457 | acpi_ev_gpe_dispatch(&gpe_block-> |
| 458 | event_info[(i * |
| 459 | ACPI_GPE_REGISTER_WIDTH) |
| 460 | + |
| 461 | j], |
| 462 | (u32) j + |
| 463 | gpe_register_info-> |
| 464 | base_gpe_number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | } |
| 466 | } |
| 467 | } |
| 468 | |
| 469 | gpe_block = gpe_block->next; |
| 470 | } |
| 471 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 472 | unlock_and_exit: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 474 | acpi_os_release_lock(acpi_gbl_gpe_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | return (int_status); |
| 476 | } |
| 477 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | /******************************************************************************* |
| 479 | * |
| 480 | * FUNCTION: acpi_ev_asynch_execute_gpe_method |
| 481 | * |
| 482 | * PARAMETERS: Context (gpe_event_info) - Info for this GPE |
| 483 | * |
| 484 | * RETURN: None |
| 485 | * |
| 486 | * DESCRIPTION: Perform the actual execution of a GPE control method. This |
| 487 | * function is called from an invocation of acpi_os_queue_for_execution |
| 488 | * (and therefore does NOT execute at interrupt level) so that |
| 489 | * the control method itself is not executed in the context of |
| 490 | * an interrupt handler. |
| 491 | * |
| 492 | ******************************************************************************/ |
| 493 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 494 | static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 496 | struct acpi_gpe_event_info *gpe_event_info = (void *)context; |
| 497 | u32 gpe_number = 0; |
| 498 | acpi_status status; |
| 499 | struct acpi_gpe_event_info local_gpe_event_info; |
| 500 | struct acpi_parameter_info info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 502 | ACPI_FUNCTION_TRACE("ev_asynch_execute_gpe_method"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 504 | status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); |
| 505 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | return_VOID; |
| 507 | } |
| 508 | |
| 509 | /* Must revalidate the gpe_number/gpe_block */ |
| 510 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 511 | if (!acpi_ev_valid_gpe_event(gpe_event_info)) { |
| 512 | status = acpi_ut_release_mutex(ACPI_MTX_EVENTS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | return_VOID; |
| 514 | } |
| 515 | |
| 516 | /* Set the GPE flags for return to enabled state */ |
| 517 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 518 | (void)acpi_ev_enable_gpe(gpe_event_info, FALSE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | |
| 520 | /* |
| 521 | * Take a snapshot of the GPE info for this level - we copy the |
| 522 | * info to prevent a race condition with remove_handler/remove_block. |
| 523 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 524 | ACPI_MEMCPY(&local_gpe_event_info, gpe_event_info, |
| 525 | sizeof(struct acpi_gpe_event_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 527 | status = acpi_ut_release_mutex(ACPI_MTX_EVENTS); |
| 528 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | return_VOID; |
| 530 | } |
| 531 | |
| 532 | /* |
| 533 | * Must check for control method type dispatch one more |
| 534 | * time to avoid race with ev_gpe_install_handler |
| 535 | */ |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 536 | if ((local_gpe_event_info.flags & ACPI_GPE_DISPATCH_MASK) == |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 537 | ACPI_GPE_DISPATCH_METHOD) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | /* |
| 539 | * Invoke the GPE Method (_Lxx, _Exx) i.e., evaluate the _Lxx/_Exx |
| 540 | * control method that corresponds to this GPE |
| 541 | */ |
| 542 | info.node = local_gpe_event_info.dispatch.method_node; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 543 | info.parameters = |
| 544 | ACPI_CAST_PTR(union acpi_operand_object *, gpe_event_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | info.parameter_type = ACPI_PARAM_GPE; |
| 546 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 547 | status = acpi_ns_evaluate_by_handle(&info); |
| 548 | if (ACPI_FAILURE(status)) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 549 | ACPI_EXCEPTION((AE_INFO, status, |
| 550 | "While evaluating method [%4.4s] for GPE[%2X]", |
| 551 | acpi_ut_get_node_name |
| 552 | (local_gpe_event_info.dispatch. |
| 553 | method_node), gpe_number)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 554 | } |
| 555 | } |
| 556 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 557 | if ((local_gpe_event_info.flags & ACPI_GPE_XRUPT_TYPE_MASK) == |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 558 | ACPI_GPE_LEVEL_TRIGGERED) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | /* |
| 560 | * GPE is level-triggered, we clear the GPE status bit after |
| 561 | * handling the event. |
| 562 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 563 | status = acpi_hw_clear_gpe(&local_gpe_event_info); |
| 564 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | return_VOID; |
| 566 | } |
| 567 | } |
| 568 | |
| 569 | /* Enable this GPE */ |
| 570 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 571 | (void)acpi_hw_write_gpe_enable_reg(&local_gpe_event_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | return_VOID; |
| 573 | } |
| 574 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | /******************************************************************************* |
| 576 | * |
| 577 | * FUNCTION: acpi_ev_gpe_dispatch |
| 578 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 579 | * PARAMETERS: gpe_event_info - Info for this GPE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 580 | * gpe_number - Number relative to the parent GPE block |
| 581 | * |
| 582 | * RETURN: INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED |
| 583 | * |
| 584 | * DESCRIPTION: Dispatch a General Purpose Event to either a function (e.g. EC) |
| 585 | * or method (e.g. _Lxx/_Exx) handler. |
| 586 | * |
| 587 | * This function executes at interrupt level. |
| 588 | * |
| 589 | ******************************************************************************/ |
| 590 | |
| 591 | u32 |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 592 | acpi_ev_gpe_dispatch(struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 594 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 596 | ACPI_FUNCTION_TRACE("ev_gpe_dispatch"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | |
| 598 | /* |
| 599 | * If edge-triggered, clear the GPE status bit now. Note that |
| 600 | * level-triggered events are cleared after the GPE is serviced. |
| 601 | */ |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 602 | if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) == |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 603 | ACPI_GPE_EDGE_TRIGGERED) { |
| 604 | status = acpi_hw_clear_gpe(gpe_event_info); |
| 605 | if (ACPI_FAILURE(status)) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 606 | ACPI_EXCEPTION((AE_INFO, status, |
| 607 | "Unable to clear GPE[%2X]", |
| 608 | gpe_number)); |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 609 | return_UINT32(ACPI_INTERRUPT_NOT_HANDLED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | } |
| 611 | } |
| 612 | |
| 613 | /* Save current system state */ |
| 614 | |
| 615 | if (acpi_gbl_system_awake_and_running) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 616 | ACPI_SET_BIT(gpe_event_info->flags, ACPI_GPE_SYSTEM_RUNNING); |
| 617 | } else { |
| 618 | ACPI_CLEAR_BIT(gpe_event_info->flags, ACPI_GPE_SYSTEM_RUNNING); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | } |
| 620 | |
| 621 | /* |
| 622 | * Dispatch the GPE to either an installed handler, or the control |
| 623 | * method associated with this GPE (_Lxx or _Exx). |
| 624 | * If a handler exists, we invoke it and do not attempt to run the method. |
| 625 | * If there is neither a handler nor a method, we disable the level to |
| 626 | * prevent further events from coming in here. |
| 627 | */ |
| 628 | switch (gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) { |
| 629 | case ACPI_GPE_DISPATCH_HANDLER: |
| 630 | |
| 631 | /* |
| 632 | * Invoke the installed handler (at interrupt level) |
| 633 | * Ignore return status for now. TBD: leave GPE disabled on error? |
| 634 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 635 | (void)gpe_event_info->dispatch.handler->address(gpe_event_info-> |
| 636 | dispatch. |
| 637 | handler-> |
| 638 | context); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | |
| 640 | /* It is now safe to clear level-triggered events. */ |
| 641 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 642 | if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) == |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 643 | ACPI_GPE_LEVEL_TRIGGERED) { |
| 644 | status = acpi_hw_clear_gpe(gpe_event_info); |
| 645 | if (ACPI_FAILURE(status)) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 646 | ACPI_EXCEPTION((AE_INFO, status, |
| 647 | "Unable to clear GPE[%2X]", |
| 648 | gpe_number)); |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 649 | return_UINT32(ACPI_INTERRUPT_NOT_HANDLED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | } |
| 651 | } |
| 652 | break; |
| 653 | |
| 654 | case ACPI_GPE_DISPATCH_METHOD: |
| 655 | |
| 656 | /* |
| 657 | * Disable GPE, so it doesn't keep firing before the method has a |
| 658 | * chance to run. |
| 659 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 660 | status = acpi_ev_disable_gpe(gpe_event_info); |
| 661 | if (ACPI_FAILURE(status)) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 662 | ACPI_EXCEPTION((AE_INFO, status, |
| 663 | "Unable to disable GPE[%2X]", |
| 664 | gpe_number)); |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 665 | return_UINT32(ACPI_INTERRUPT_NOT_HANDLED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | } |
| 667 | |
| 668 | /* |
| 669 | * Execute the method associated with the GPE |
| 670 | * NOTE: Level-triggered GPEs are cleared after the method completes. |
| 671 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 672 | status = acpi_os_queue_for_execution(OSD_PRIORITY_GPE, |
| 673 | acpi_ev_asynch_execute_gpe_method, |
| 674 | gpe_event_info); |
| 675 | if (ACPI_FAILURE(status)) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 676 | ACPI_EXCEPTION((AE_INFO, status, |
| 677 | "Unable to queue handler for GPE[%2X] - event disabled", |
| 678 | gpe_number)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | } |
| 680 | break; |
| 681 | |
| 682 | default: |
| 683 | |
| 684 | /* No handler or method to run! */ |
| 685 | |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 686 | ACPI_ERROR((AE_INFO, |
| 687 | "No handler or method for GPE[%2X], disabling event", |
| 688 | gpe_number)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | |
| 690 | /* |
| 691 | * Disable the GPE. The GPE will remain disabled until the ACPI |
| 692 | * Core Subsystem is restarted, or a handler is installed. |
| 693 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 694 | status = acpi_ev_disable_gpe(gpe_event_info); |
| 695 | if (ACPI_FAILURE(status)) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 696 | ACPI_EXCEPTION((AE_INFO, status, |
| 697 | "Unable to disable GPE[%2X]", |
| 698 | gpe_number)); |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 699 | return_UINT32(ACPI_INTERRUPT_NOT_HANDLED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | } |
| 701 | break; |
| 702 | } |
| 703 | |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 704 | return_UINT32(ACPI_INTERRUPT_HANDLED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | } |
| 706 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 707 | #ifdef ACPI_GPE_NOTIFY_CHECK |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | /******************************************************************************* |
| 709 | * TBD: NOT USED, PROTOTYPE ONLY AND WILL PROBABLY BE REMOVED |
| 710 | * |
| 711 | * FUNCTION: acpi_ev_check_for_wake_only_gpe |
| 712 | * |
| 713 | * PARAMETERS: gpe_event_info - info for this GPE |
| 714 | * |
| 715 | * RETURN: Status |
| 716 | * |
| 717 | * DESCRIPTION: Determine if a a GPE is "wake-only". |
| 718 | * |
| 719 | * Called from Notify() code in interpreter when a "device_wake" |
| 720 | * Notify comes in. |
| 721 | * |
| 722 | ******************************************************************************/ |
| 723 | |
| 724 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 725 | acpi_ev_check_for_wake_only_gpe(struct acpi_gpe_event_info *gpe_event_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 726 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 727 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 728 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 729 | ACPI_FUNCTION_TRACE("ev_check_for_wake_only_gpe"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 731 | if ((gpe_event_info) && /* Only >0 for _Lxx/_Exx */ |
| 732 | ((gpe_event_info->flags & ACPI_GPE_SYSTEM_MASK) == ACPI_GPE_SYSTEM_RUNNING)) { /* System state at GPE time */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | /* This must be a wake-only GPE, disable it */ |
| 734 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 735 | status = acpi_ev_disable_gpe(gpe_event_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | |
| 737 | /* Set GPE to wake-only. Do not change wake disabled/enabled status */ |
| 738 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 739 | acpi_ev_set_gpe_type(gpe_event_info, ACPI_GPE_TYPE_WAKE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 740 | |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 741 | ACPI_INFO((AE_INFO, |
| 742 | "GPE %p was updated from wake/run to wake-only", |
| 743 | gpe_event_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | |
| 745 | /* This was a wake-only GPE */ |
| 746 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 747 | return_ACPI_STATUS(AE_WAKE_ONLY_GPE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | } |
| 749 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 750 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | } |
| 752 | #endif |