Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Module Name: evgpeblk - GPE block creation and initialization. |
| 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("evgpeblk") |
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 acpi_status |
| 53 | acpi_ev_save_method_info(acpi_handle obj_handle, |
| 54 | u32 level, void *obj_desc, void **return_value); |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 55 | |
| 56 | static acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 57 | acpi_ev_match_prw_and_gpe(acpi_handle obj_handle, |
| 58 | u32 level, void *info, void **return_value); |
| 59 | |
| 60 | static struct acpi_gpe_xrupt_info *acpi_ev_get_gpe_xrupt_block(u32 |
| 61 | interrupt_number); |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 62 | |
| 63 | static acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 64 | acpi_ev_delete_gpe_xrupt(struct acpi_gpe_xrupt_info *gpe_xrupt); |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 65 | |
| 66 | static acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 67 | acpi_ev_install_gpe_block(struct acpi_gpe_block_info *gpe_block, |
| 68 | u32 interrupt_number); |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 69 | |
| 70 | static acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 71 | acpi_ev_create_gpe_info_blocks(struct acpi_gpe_block_info *gpe_block); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | |
| 73 | /******************************************************************************* |
| 74 | * |
| 75 | * FUNCTION: acpi_ev_valid_gpe_event |
| 76 | * |
| 77 | * PARAMETERS: gpe_event_info - Info for this GPE |
| 78 | * |
| 79 | * RETURN: TRUE if the gpe_event is valid |
| 80 | * |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 81 | * DESCRIPTION: Validate a GPE event. DO NOT CALL FROM INTERRUPT LEVEL. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | * Should be called only when the GPE lists are semaphore locked |
| 83 | * and not subject to change. |
| 84 | * |
| 85 | ******************************************************************************/ |
| 86 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 87 | u8 acpi_ev_valid_gpe_event(struct acpi_gpe_event_info *gpe_event_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 89 | struct acpi_gpe_xrupt_info *gpe_xrupt_block; |
| 90 | struct acpi_gpe_block_info *gpe_block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 92 | ACPI_FUNCTION_ENTRY(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | |
| 94 | /* No need for spin lock since we are not changing any list elements */ |
| 95 | |
| 96 | /* Walk the GPE interrupt levels */ |
| 97 | |
| 98 | gpe_xrupt_block = acpi_gbl_gpe_xrupt_list_head; |
| 99 | while (gpe_xrupt_block) { |
| 100 | gpe_block = gpe_xrupt_block->gpe_block_list_head; |
| 101 | |
| 102 | /* Walk the GPE blocks on this interrupt level */ |
| 103 | |
| 104 | while (gpe_block) { |
| 105 | if ((&gpe_block->event_info[0] <= gpe_event_info) && |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 106 | (&gpe_block-> |
| 107 | event_info[((acpi_size) gpe_block-> |
| 108 | register_count) * 8] > |
| 109 | gpe_event_info)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | return (TRUE); |
| 111 | } |
| 112 | |
| 113 | gpe_block = gpe_block->next; |
| 114 | } |
| 115 | |
| 116 | gpe_xrupt_block = gpe_xrupt_block->next; |
| 117 | } |
| 118 | |
| 119 | return (FALSE); |
| 120 | } |
| 121 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | /******************************************************************************* |
| 123 | * |
| 124 | * FUNCTION: acpi_ev_walk_gpe_list |
| 125 | * |
| 126 | * PARAMETERS: gpe_walk_callback - Routine called for each GPE block |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | * |
| 128 | * RETURN: Status |
| 129 | * |
| 130 | * DESCRIPTION: Walk the GPE lists. |
| 131 | * |
| 132 | ******************************************************************************/ |
| 133 | |
Bob Moore | 61686124 | 2006-03-17 16:44:00 -0500 | [diff] [blame] | 134 | acpi_status acpi_ev_walk_gpe_list(acpi_gpe_callback gpe_walk_callback) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 136 | struct acpi_gpe_block_info *gpe_block; |
| 137 | struct acpi_gpe_xrupt_info *gpe_xrupt_info; |
| 138 | acpi_status status = AE_OK; |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 139 | acpi_cpu_flags flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 141 | ACPI_FUNCTION_TRACE(ev_walk_gpe_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 143 | flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | |
| 145 | /* Walk the interrupt level descriptor list */ |
| 146 | |
| 147 | gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head; |
| 148 | while (gpe_xrupt_info) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 149 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | /* Walk all Gpe Blocks attached to this interrupt level */ |
| 151 | |
| 152 | gpe_block = gpe_xrupt_info->gpe_block_list_head; |
| 153 | while (gpe_block) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 154 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | /* One callback per GPE block */ |
| 156 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 157 | status = gpe_walk_callback(gpe_xrupt_info, gpe_block); |
| 158 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | goto unlock_and_exit; |
| 160 | } |
| 161 | |
| 162 | gpe_block = gpe_block->next; |
| 163 | } |
| 164 | |
| 165 | gpe_xrupt_info = gpe_xrupt_info->next; |
| 166 | } |
| 167 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 168 | unlock_and_exit: |
| 169 | acpi_os_release_lock(acpi_gbl_gpe_lock, flags); |
| 170 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | } |
| 172 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 173 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | * |
| 175 | * FUNCTION: acpi_ev_delete_gpe_handlers |
| 176 | * |
| 177 | * PARAMETERS: gpe_xrupt_info - GPE Interrupt info |
| 178 | * gpe_block - Gpe Block info |
| 179 | * |
| 180 | * RETURN: Status |
| 181 | * |
| 182 | * DESCRIPTION: Delete all Handler objects found in the GPE data structs. |
| 183 | * Used only prior to termination. |
| 184 | * |
| 185 | ******************************************************************************/ |
| 186 | |
| 187 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 188 | acpi_ev_delete_gpe_handlers(struct acpi_gpe_xrupt_info *gpe_xrupt_info, |
| 189 | struct acpi_gpe_block_info *gpe_block) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 191 | struct acpi_gpe_event_info *gpe_event_info; |
| 192 | acpi_native_uint i; |
| 193 | acpi_native_uint j; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 195 | ACPI_FUNCTION_TRACE(ev_delete_gpe_handlers); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | |
| 197 | /* Examine each GPE Register within the block */ |
| 198 | |
| 199 | for (i = 0; i < gpe_block->register_count; i++) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 200 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | /* Now look at the individual GPEs in this byte register */ |
| 202 | |
| 203 | for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 204 | gpe_event_info = |
| 205 | &gpe_block-> |
| 206 | event_info[(i * ACPI_GPE_REGISTER_WIDTH) + j]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 208 | if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) == |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 209 | ACPI_GPE_DISPATCH_HANDLER) { |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 210 | ACPI_FREE(gpe_event_info->dispatch.handler); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | gpe_event_info->dispatch.handler = NULL; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 212 | gpe_event_info->flags &= |
| 213 | ~ACPI_GPE_DISPATCH_MASK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | } |
| 215 | } |
| 216 | } |
| 217 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 218 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | } |
| 220 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | /******************************************************************************* |
| 222 | * |
| 223 | * FUNCTION: acpi_ev_save_method_info |
| 224 | * |
| 225 | * PARAMETERS: Callback from walk_namespace |
| 226 | * |
| 227 | * RETURN: Status |
| 228 | * |
| 229 | * DESCRIPTION: Called from acpi_walk_namespace. Expects each object to be a |
| 230 | * control method under the _GPE portion of the namespace. |
| 231 | * Extract the name and GPE type from the object, saving this |
| 232 | * information for quick lookup during GPE dispatch |
| 233 | * |
| 234 | * The name of each GPE control method is of the form: |
| 235 | * "_Lxx" or "_Exx" |
| 236 | * Where: |
| 237 | * L - means that the GPE is level triggered |
| 238 | * E - means that the GPE is edge triggered |
| 239 | * xx - is the GPE number [in HEX] |
| 240 | * |
| 241 | ******************************************************************************/ |
| 242 | |
| 243 | static acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 244 | acpi_ev_save_method_info(acpi_handle obj_handle, |
| 245 | u32 level, void *obj_desc, void **return_value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 247 | struct acpi_gpe_block_info *gpe_block = (void *)obj_desc; |
| 248 | struct acpi_gpe_event_info *gpe_event_info; |
| 249 | u32 gpe_number; |
| 250 | char name[ACPI_NAME_SIZE + 1]; |
| 251 | u8 type; |
| 252 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 254 | ACPI_FUNCTION_TRACE(ev_save_method_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | |
| 256 | /* |
| 257 | * _Lxx and _Exx GPE method support |
| 258 | * |
| 259 | * 1) Extract the name from the object and convert to a string |
| 260 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 261 | ACPI_MOVE_32_TO_32(name, |
| 262 | &((struct acpi_namespace_node *)obj_handle)->name. |
| 263 | integer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | name[ACPI_NAME_SIZE] = 0; |
| 265 | |
| 266 | /* |
| 267 | * 2) Edge/Level determination is based on the 2nd character |
| 268 | * of the method name |
| 269 | * |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 270 | * NOTE: Default GPE type is RUNTIME. May be changed later to WAKE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | * if a _PRW object is found that points to this GPE. |
| 272 | */ |
| 273 | switch (name[1]) { |
| 274 | case 'L': |
| 275 | type = ACPI_GPE_LEVEL_TRIGGERED; |
| 276 | break; |
| 277 | |
| 278 | case 'E': |
| 279 | type = ACPI_GPE_EDGE_TRIGGERED; |
| 280 | break; |
| 281 | |
| 282 | default: |
| 283 | /* Unknown method type, just ignore it! */ |
| 284 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 285 | ACPI_DEBUG_PRINT((ACPI_DB_LOAD, |
| 286 | "Ignoring unknown GPE method type: %s (name not of form _Lxx or _Exx)", |
| 287 | name)); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 288 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | } |
| 290 | |
| 291 | /* Convert the last two characters of the name to the GPE Number */ |
| 292 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 293 | gpe_number = ACPI_STRTOUL(&name[2], NULL, 16); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | if (gpe_number == ACPI_UINT32_MAX) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 295 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | /* Conversion failed; invalid method, just ignore it */ |
| 297 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 298 | ACPI_DEBUG_PRINT((ACPI_DB_LOAD, |
| 299 | "Could not extract GPE number from name: %s (name is not of form _Lxx or _Exx)", |
| 300 | name)); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 301 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | } |
| 303 | |
| 304 | /* Ensure that we have a valid GPE number for this GPE block */ |
| 305 | |
| 306 | if ((gpe_number < gpe_block->block_base_number) || |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 307 | (gpe_number >= |
| 308 | (gpe_block->block_base_number + |
| 309 | (gpe_block->register_count * 8)))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | /* |
| 311 | * Not valid for this GPE block, just ignore it |
| 312 | * However, it may be valid for a different GPE block, since GPE0 and GPE1 |
| 313 | * methods both appear under \_GPE. |
| 314 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 315 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | } |
| 317 | |
| 318 | /* |
| 319 | * Now we can add this information to the gpe_event_info block |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 320 | * for use during dispatch of this GPE. Default type is RUNTIME, although |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | * this may change when the _PRW methods are executed later. |
| 322 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 323 | gpe_event_info = |
| 324 | &gpe_block->event_info[gpe_number - gpe_block->block_base_number]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 326 | gpe_event_info->flags = (u8) |
| 327 | (type | ACPI_GPE_DISPATCH_METHOD | ACPI_GPE_TYPE_RUNTIME); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 329 | gpe_event_info->dispatch.method_node = |
| 330 | (struct acpi_namespace_node *)obj_handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | |
| 332 | /* Update enable mask, but don't enable the HW GPE as of yet */ |
| 333 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 334 | status = acpi_ev_enable_gpe(gpe_event_info, FALSE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 336 | ACPI_DEBUG_PRINT((ACPI_DB_LOAD, |
| 337 | "Registered GPE method %s as GPE number 0x%.2X\n", |
| 338 | name, gpe_number)); |
| 339 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | } |
| 341 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | /******************************************************************************* |
| 343 | * |
| 344 | * FUNCTION: acpi_ev_match_prw_and_gpe |
| 345 | * |
| 346 | * PARAMETERS: Callback from walk_namespace |
| 347 | * |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 348 | * RETURN: Status. NOTE: We ignore errors so that the _PRW walk is |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | * not aborted on a single _PRW failure. |
| 350 | * |
| 351 | * DESCRIPTION: Called from acpi_walk_namespace. Expects each object to be a |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 352 | * Device. Run the _PRW method. If present, extract the GPE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | * number and mark the GPE as a WAKE GPE. |
| 354 | * |
| 355 | ******************************************************************************/ |
| 356 | |
| 357 | static acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 358 | acpi_ev_match_prw_and_gpe(acpi_handle obj_handle, |
| 359 | u32 level, void *info, void **return_value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 361 | struct acpi_gpe_walk_info *gpe_info = (void *)info; |
| 362 | struct acpi_namespace_node *gpe_device; |
| 363 | struct acpi_gpe_block_info *gpe_block; |
| 364 | struct acpi_namespace_node *target_gpe_device; |
| 365 | struct acpi_gpe_event_info *gpe_event_info; |
| 366 | union acpi_operand_object *pkg_desc; |
| 367 | union acpi_operand_object *obj_desc; |
| 368 | u32 gpe_number; |
| 369 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 371 | ACPI_FUNCTION_TRACE(ev_match_prw_and_gpe); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | |
| 373 | /* Check for a _PRW method under this device */ |
| 374 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 375 | status = acpi_ut_evaluate_object(obj_handle, METHOD_NAME__PRW, |
| 376 | ACPI_BTYPE_PACKAGE, &pkg_desc); |
| 377 | if (ACPI_FAILURE(status)) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 378 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | /* Ignore all errors from _PRW, we don't want to abort the subsystem */ |
| 380 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 381 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | } |
| 383 | |
| 384 | /* The returned _PRW package must have at least two elements */ |
| 385 | |
| 386 | if (pkg_desc->package.count < 2) { |
| 387 | goto cleanup; |
| 388 | } |
| 389 | |
| 390 | /* Extract pointers from the input context */ |
| 391 | |
| 392 | gpe_device = gpe_info->gpe_device; |
| 393 | gpe_block = gpe_info->gpe_block; |
| 394 | |
| 395 | /* |
| 396 | * The _PRW object must return a package, we are only interested |
| 397 | * in the first element |
| 398 | */ |
| 399 | obj_desc = pkg_desc->package.elements[0]; |
| 400 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 401 | if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_INTEGER) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 402 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | /* Use FADT-defined GPE device (from definition of _PRW) */ |
| 404 | |
| 405 | target_gpe_device = acpi_gbl_fadt_gpe_device; |
| 406 | |
| 407 | /* Integer is the GPE number in the FADT described GPE blocks */ |
| 408 | |
| 409 | gpe_number = (u32) obj_desc->integer.value; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 410 | } else if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_PACKAGE) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 411 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | /* Package contains a GPE reference and GPE number within a GPE block */ |
| 413 | |
| 414 | if ((obj_desc->package.count < 2) || |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 415 | (ACPI_GET_OBJECT_TYPE(obj_desc->package.elements[0]) != |
| 416 | ACPI_TYPE_LOCAL_REFERENCE) |
| 417 | || (ACPI_GET_OBJECT_TYPE(obj_desc->package.elements[1]) != |
| 418 | ACPI_TYPE_INTEGER)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | goto cleanup; |
| 420 | } |
| 421 | |
| 422 | /* Get GPE block reference and decode */ |
| 423 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 424 | target_gpe_device = |
| 425 | obj_desc->package.elements[0]->reference.node; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | gpe_number = (u32) obj_desc->package.elements[1]->integer.value; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 427 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | /* Unknown type, just ignore it */ |
| 429 | |
| 430 | goto cleanup; |
| 431 | } |
| 432 | |
| 433 | /* |
| 434 | * Is this GPE within this block? |
| 435 | * |
| 436 | * TRUE iff these conditions are true: |
| 437 | * 1) The GPE devices match. |
| 438 | * 2) The GPE index(number) is within the range of the Gpe Block |
| 439 | * associated with the GPE device. |
| 440 | */ |
| 441 | if ((gpe_device == target_gpe_device) && |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 442 | (gpe_number >= gpe_block->block_base_number) && |
| 443 | (gpe_number < |
| 444 | gpe_block->block_base_number + (gpe_block->register_count * 8))) { |
| 445 | gpe_event_info = |
| 446 | &gpe_block->event_info[gpe_number - |
| 447 | gpe_block->block_base_number]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | |
| 449 | /* Mark GPE for WAKE-ONLY but WAKE_DISABLED */ |
| 450 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 451 | gpe_event_info->flags &= |
| 452 | ~(ACPI_GPE_WAKE_ENABLED | ACPI_GPE_RUN_ENABLED); |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 453 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 454 | status = |
| 455 | acpi_ev_set_gpe_type(gpe_event_info, ACPI_GPE_TYPE_WAKE); |
| 456 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | goto cleanup; |
| 458 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 459 | status = |
| 460 | acpi_ev_update_gpe_enable_masks(gpe_event_info, |
| 461 | ACPI_GPE_DISABLE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | } |
| 463 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 464 | cleanup: |
| 465 | acpi_ut_remove_reference(pkg_desc); |
| 466 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | } |
| 468 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | /******************************************************************************* |
| 470 | * |
| 471 | * FUNCTION: acpi_ev_get_gpe_xrupt_block |
| 472 | * |
Robert Moore | 6f42ccf | 2005-05-13 00:00:00 -0400 | [diff] [blame] | 473 | * PARAMETERS: interrupt_number - Interrupt for a GPE block |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | * |
| 475 | * RETURN: A GPE interrupt block |
| 476 | * |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 477 | * DESCRIPTION: Get or Create a GPE interrupt block. There is one interrupt |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | * block per unique interrupt level used for GPEs. |
| 479 | * Should be called only when the GPE lists are semaphore locked |
| 480 | * and not subject to change. |
| 481 | * |
| 482 | ******************************************************************************/ |
| 483 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 484 | static struct acpi_gpe_xrupt_info *acpi_ev_get_gpe_xrupt_block(u32 |
| 485 | interrupt_number) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 487 | struct acpi_gpe_xrupt_info *next_gpe_xrupt; |
| 488 | struct acpi_gpe_xrupt_info *gpe_xrupt; |
| 489 | acpi_status status; |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 490 | acpi_cpu_flags flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 492 | ACPI_FUNCTION_TRACE(ev_get_gpe_xrupt_block); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 494 | /* No need for lock since we are not changing any list elements here */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | |
| 496 | next_gpe_xrupt = acpi_gbl_gpe_xrupt_list_head; |
| 497 | while (next_gpe_xrupt) { |
Robert Moore | 6f42ccf | 2005-05-13 00:00:00 -0400 | [diff] [blame] | 498 | if (next_gpe_xrupt->interrupt_number == interrupt_number) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 499 | return_PTR(next_gpe_xrupt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | } |
| 501 | |
| 502 | next_gpe_xrupt = next_gpe_xrupt->next; |
| 503 | } |
| 504 | |
| 505 | /* Not found, must allocate a new xrupt descriptor */ |
| 506 | |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 507 | gpe_xrupt = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_gpe_xrupt_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | if (!gpe_xrupt) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 509 | return_PTR(NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | } |
| 511 | |
Robert Moore | 6f42ccf | 2005-05-13 00:00:00 -0400 | [diff] [blame] | 512 | gpe_xrupt->interrupt_number = interrupt_number; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | |
| 514 | /* Install new interrupt descriptor with spin lock */ |
| 515 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 516 | flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | if (acpi_gbl_gpe_xrupt_list_head) { |
| 518 | next_gpe_xrupt = acpi_gbl_gpe_xrupt_list_head; |
| 519 | while (next_gpe_xrupt->next) { |
| 520 | next_gpe_xrupt = next_gpe_xrupt->next; |
| 521 | } |
| 522 | |
| 523 | next_gpe_xrupt->next = gpe_xrupt; |
| 524 | gpe_xrupt->previous = next_gpe_xrupt; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 525 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | acpi_gbl_gpe_xrupt_list_head = gpe_xrupt; |
| 527 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 528 | acpi_os_release_lock(acpi_gbl_gpe_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | |
| 530 | /* Install new interrupt handler if not SCI_INT */ |
| 531 | |
Robert Moore | 6f42ccf | 2005-05-13 00:00:00 -0400 | [diff] [blame] | 532 | if (interrupt_number != acpi_gbl_FADT->sci_int) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 533 | status = acpi_os_install_interrupt_handler(interrupt_number, |
| 534 | acpi_ev_gpe_xrupt_handler, |
| 535 | gpe_xrupt); |
| 536 | if (ACPI_FAILURE(status)) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 537 | ACPI_ERROR((AE_INFO, |
| 538 | "Could not install GPE interrupt handler at level 0x%X", |
| 539 | interrupt_number)); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 540 | return_PTR(NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | } |
| 542 | } |
| 543 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 544 | return_PTR(gpe_xrupt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | } |
| 546 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | /******************************************************************************* |
| 548 | * |
| 549 | * FUNCTION: acpi_ev_delete_gpe_xrupt |
| 550 | * |
| 551 | * PARAMETERS: gpe_xrupt - A GPE interrupt info block |
| 552 | * |
| 553 | * RETURN: Status |
| 554 | * |
| 555 | * DESCRIPTION: Remove and free a gpe_xrupt block. Remove an associated |
| 556 | * interrupt handler if not the SCI interrupt. |
| 557 | * |
| 558 | ******************************************************************************/ |
| 559 | |
| 560 | static acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 561 | acpi_ev_delete_gpe_xrupt(struct acpi_gpe_xrupt_info *gpe_xrupt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 563 | acpi_status status; |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 564 | acpi_cpu_flags flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 566 | ACPI_FUNCTION_TRACE(ev_delete_gpe_xrupt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | |
| 568 | /* We never want to remove the SCI interrupt handler */ |
| 569 | |
Robert Moore | 6f42ccf | 2005-05-13 00:00:00 -0400 | [diff] [blame] | 570 | if (gpe_xrupt->interrupt_number == acpi_gbl_FADT->sci_int) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | gpe_xrupt->gpe_block_list_head = NULL; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 572 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | } |
| 574 | |
| 575 | /* Disable this interrupt */ |
| 576 | |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 577 | status = |
| 578 | acpi_os_remove_interrupt_handler(gpe_xrupt->interrupt_number, |
| 579 | acpi_ev_gpe_xrupt_handler); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 580 | if (ACPI_FAILURE(status)) { |
| 581 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | } |
| 583 | |
| 584 | /* Unlink the interrupt block with lock */ |
| 585 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 586 | flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | if (gpe_xrupt->previous) { |
| 588 | gpe_xrupt->previous->next = gpe_xrupt->next; |
| 589 | } |
| 590 | |
| 591 | if (gpe_xrupt->next) { |
| 592 | gpe_xrupt->next->previous = gpe_xrupt->previous; |
| 593 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 594 | acpi_os_release_lock(acpi_gbl_gpe_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | |
| 596 | /* Free the block */ |
| 597 | |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 598 | ACPI_FREE(gpe_xrupt); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 599 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | } |
| 601 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | /******************************************************************************* |
| 603 | * |
| 604 | * FUNCTION: acpi_ev_install_gpe_block |
| 605 | * |
| 606 | * PARAMETERS: gpe_block - New GPE block |
Robert Moore | 6f42ccf | 2005-05-13 00:00:00 -0400 | [diff] [blame] | 607 | * interrupt_number - Xrupt to be associated with this GPE block |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | * |
| 609 | * RETURN: Status |
| 610 | * |
| 611 | * DESCRIPTION: Install new GPE block with mutex support |
| 612 | * |
| 613 | ******************************************************************************/ |
| 614 | |
| 615 | static acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 616 | acpi_ev_install_gpe_block(struct acpi_gpe_block_info *gpe_block, |
| 617 | u32 interrupt_number) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 619 | struct acpi_gpe_block_info *next_gpe_block; |
| 620 | struct acpi_gpe_xrupt_info *gpe_xrupt_block; |
| 621 | acpi_status status; |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 622 | acpi_cpu_flags flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 624 | ACPI_FUNCTION_TRACE(ev_install_gpe_block); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 626 | status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); |
| 627 | if (ACPI_FAILURE(status)) { |
| 628 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | } |
| 630 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 631 | gpe_xrupt_block = acpi_ev_get_gpe_xrupt_block(interrupt_number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | if (!gpe_xrupt_block) { |
| 633 | status = AE_NO_MEMORY; |
| 634 | goto unlock_and_exit; |
| 635 | } |
| 636 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 637 | /* Install the new block at the end of the list with lock */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 639 | flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 640 | if (gpe_xrupt_block->gpe_block_list_head) { |
| 641 | next_gpe_block = gpe_xrupt_block->gpe_block_list_head; |
| 642 | while (next_gpe_block->next) { |
| 643 | next_gpe_block = next_gpe_block->next; |
| 644 | } |
| 645 | |
| 646 | next_gpe_block->next = gpe_block; |
| 647 | gpe_block->previous = next_gpe_block; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 648 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | gpe_xrupt_block->gpe_block_list_head = gpe_block; |
| 650 | } |
| 651 | |
| 652 | gpe_block->xrupt_block = gpe_xrupt_block; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 653 | acpi_os_release_lock(acpi_gbl_gpe_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 654 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 655 | unlock_and_exit: |
| 656 | status = acpi_ut_release_mutex(ACPI_MTX_EVENTS); |
| 657 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | } |
| 659 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | /******************************************************************************* |
| 661 | * |
| 662 | * FUNCTION: acpi_ev_delete_gpe_block |
| 663 | * |
| 664 | * PARAMETERS: gpe_block - Existing GPE block |
| 665 | * |
| 666 | * RETURN: Status |
| 667 | * |
| 668 | * DESCRIPTION: Remove a GPE block |
| 669 | * |
| 670 | ******************************************************************************/ |
| 671 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 672 | acpi_status acpi_ev_delete_gpe_block(struct acpi_gpe_block_info *gpe_block) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 674 | acpi_status status; |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 675 | acpi_cpu_flags flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 676 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 677 | ACPI_FUNCTION_TRACE(ev_install_gpe_block); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 679 | status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); |
| 680 | if (ACPI_FAILURE(status)) { |
| 681 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 682 | } |
| 683 | |
| 684 | /* Disable all GPEs in this block */ |
| 685 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 686 | status = acpi_hw_disable_gpe_block(gpe_block->xrupt_block, gpe_block); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | |
| 688 | if (!gpe_block->previous && !gpe_block->next) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 689 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | /* This is the last gpe_block on this interrupt */ |
| 691 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 692 | status = acpi_ev_delete_gpe_xrupt(gpe_block->xrupt_block); |
| 693 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | goto unlock_and_exit; |
| 695 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 696 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | /* Remove the block on this interrupt with lock */ |
| 698 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 699 | flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | if (gpe_block->previous) { |
| 701 | gpe_block->previous->next = gpe_block->next; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 702 | } else { |
| 703 | gpe_block->xrupt_block->gpe_block_list_head = |
| 704 | gpe_block->next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | } |
| 706 | |
| 707 | if (gpe_block->next) { |
| 708 | gpe_block->next->previous = gpe_block->previous; |
| 709 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 710 | acpi_os_release_lock(acpi_gbl_gpe_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 711 | } |
| 712 | |
| 713 | /* Free the gpe_block */ |
| 714 | |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 715 | ACPI_FREE(gpe_block->register_info); |
| 716 | ACPI_FREE(gpe_block->event_info); |
| 717 | ACPI_FREE(gpe_block); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 718 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 719 | unlock_and_exit: |
| 720 | status = acpi_ut_release_mutex(ACPI_MTX_EVENTS); |
| 721 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 722 | } |
| 723 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | /******************************************************************************* |
| 725 | * |
| 726 | * FUNCTION: acpi_ev_create_gpe_info_blocks |
| 727 | * |
| 728 | * PARAMETERS: gpe_block - New GPE block |
| 729 | * |
| 730 | * RETURN: Status |
| 731 | * |
| 732 | * DESCRIPTION: Create the register_info and event_info blocks for this GPE block |
| 733 | * |
| 734 | ******************************************************************************/ |
| 735 | |
| 736 | static acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 737 | acpi_ev_create_gpe_info_blocks(struct acpi_gpe_block_info *gpe_block) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 738 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 739 | struct acpi_gpe_register_info *gpe_register_info = NULL; |
| 740 | struct acpi_gpe_event_info *gpe_event_info = NULL; |
| 741 | struct acpi_gpe_event_info *this_event; |
| 742 | struct acpi_gpe_register_info *this_register; |
| 743 | acpi_native_uint i; |
| 744 | acpi_native_uint j; |
| 745 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 746 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 747 | ACPI_FUNCTION_TRACE(ev_create_gpe_info_blocks); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | |
| 749 | /* Allocate the GPE register information block */ |
| 750 | |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 751 | gpe_register_info = ACPI_ALLOCATE_ZEROED((acpi_size) gpe_block-> |
| 752 | register_count * |
| 753 | sizeof(struct |
| 754 | acpi_gpe_register_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | if (!gpe_register_info) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 756 | ACPI_ERROR((AE_INFO, |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 757 | "Could not allocate the GpeRegisterInfo table")); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 758 | return_ACPI_STATUS(AE_NO_MEMORY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | } |
| 760 | |
| 761 | /* |
| 762 | * Allocate the GPE event_info block. There are eight distinct GPEs |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 763 | * per register. Initialization to zeros is sufficient. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | */ |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 765 | gpe_event_info = ACPI_ALLOCATE_ZEROED(((acpi_size) gpe_block-> |
| 766 | register_count * |
| 767 | ACPI_GPE_REGISTER_WIDTH) * |
| 768 | sizeof(struct |
| 769 | acpi_gpe_event_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 770 | if (!gpe_event_info) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 771 | ACPI_ERROR((AE_INFO, |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 772 | "Could not allocate the GpeEventInfo table")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 773 | status = AE_NO_MEMORY; |
| 774 | goto error_exit; |
| 775 | } |
| 776 | |
| 777 | /* Save the new Info arrays in the GPE block */ |
| 778 | |
| 779 | gpe_block->register_info = gpe_register_info; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 780 | gpe_block->event_info = gpe_event_info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | |
| 782 | /* |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 783 | * Initialize the GPE Register and Event structures. A goal of these |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | * tables is to hide the fact that there are two separate GPE register sets |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 785 | * in a given GPE hardware block, the status registers occupy the first half, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 786 | * and the enable registers occupy the second half. |
| 787 | */ |
| 788 | this_register = gpe_register_info; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 789 | this_event = gpe_event_info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | |
| 791 | for (i = 0; i < gpe_block->register_count; i++) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 792 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | /* Init the register_info for this GPE register (8 GPEs) */ |
| 794 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 795 | this_register->base_gpe_number = |
| 796 | (u8) (gpe_block->block_base_number + |
| 797 | (i * ACPI_GPE_REGISTER_WIDTH)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 799 | ACPI_STORE_ADDRESS(this_register->status_address.address, |
| 800 | (gpe_block->block_address.address + i)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 802 | ACPI_STORE_ADDRESS(this_register->enable_address.address, |
| 803 | (gpe_block->block_address.address |
| 804 | + i + gpe_block->register_count)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 805 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 806 | this_register->status_address.address_space_id = |
| 807 | gpe_block->block_address.address_space_id; |
| 808 | this_register->enable_address.address_space_id = |
| 809 | gpe_block->block_address.address_space_id; |
| 810 | this_register->status_address.register_bit_width = |
| 811 | ACPI_GPE_REGISTER_WIDTH; |
| 812 | this_register->enable_address.register_bit_width = |
| 813 | ACPI_GPE_REGISTER_WIDTH; |
| 814 | this_register->status_address.register_bit_offset = |
| 815 | ACPI_GPE_REGISTER_WIDTH; |
| 816 | this_register->enable_address.register_bit_offset = |
| 817 | ACPI_GPE_REGISTER_WIDTH; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 818 | |
| 819 | /* Init the event_info for each GPE within this register */ |
| 820 | |
| 821 | for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++) { |
| 822 | this_event->register_bit = acpi_gbl_decode_to8bit[j]; |
| 823 | this_event->register_info = this_register; |
| 824 | this_event++; |
| 825 | } |
| 826 | |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 827 | /* Disable all GPEs within this register */ |
| 828 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 829 | status = acpi_hw_low_level_write(ACPI_GPE_REGISTER_WIDTH, 0x00, |
| 830 | &this_register-> |
| 831 | enable_address); |
| 832 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | goto error_exit; |
| 834 | } |
| 835 | |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 836 | /* Clear any pending GPE events within this register */ |
| 837 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 838 | status = acpi_hw_low_level_write(ACPI_GPE_REGISTER_WIDTH, 0xFF, |
| 839 | &this_register-> |
| 840 | status_address); |
| 841 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 842 | goto error_exit; |
| 843 | } |
| 844 | |
| 845 | this_register++; |
| 846 | } |
| 847 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 848 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 850 | error_exit: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 851 | if (gpe_register_info) { |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 852 | ACPI_FREE(gpe_register_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 853 | } |
| 854 | if (gpe_event_info) { |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 855 | ACPI_FREE(gpe_event_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 856 | } |
| 857 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 858 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 859 | } |
| 860 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 861 | /******************************************************************************* |
| 862 | * |
| 863 | * FUNCTION: acpi_ev_create_gpe_block |
| 864 | * |
| 865 | * PARAMETERS: gpe_device - Handle to the parent GPE block |
| 866 | * gpe_block_address - Address and space_iD |
| 867 | * register_count - Number of GPE register pairs in the block |
| 868 | * gpe_block_base_number - Starting GPE number for the block |
Robert Moore | 6f42ccf | 2005-05-13 00:00:00 -0400 | [diff] [blame] | 869 | * interrupt_number - H/W interrupt for the block |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | * return_gpe_block - Where the new block descriptor is returned |
| 871 | * |
| 872 | * RETURN: Status |
| 873 | * |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 874 | * DESCRIPTION: Create and Install a block of GPE registers. All GPEs within |
| 875 | * the block are disabled at exit. |
| 876 | * Note: Assumes namespace is locked. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 877 | * |
| 878 | ******************************************************************************/ |
| 879 | |
| 880 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 881 | acpi_ev_create_gpe_block(struct acpi_namespace_node *gpe_device, |
| 882 | struct acpi_generic_address *gpe_block_address, |
| 883 | u32 register_count, |
| 884 | u8 gpe_block_base_number, |
| 885 | u32 interrupt_number, |
| 886 | struct acpi_gpe_block_info **return_gpe_block) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 888 | acpi_status status; |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 889 | struct acpi_gpe_block_info *gpe_block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 890 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 891 | ACPI_FUNCTION_TRACE(ev_create_gpe_block); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 892 | |
| 893 | if (!register_count) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 894 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | } |
| 896 | |
| 897 | /* Allocate a new GPE block */ |
| 898 | |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 899 | gpe_block = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_gpe_block_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 900 | if (!gpe_block) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 901 | return_ACPI_STATUS(AE_NO_MEMORY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | } |
| 903 | |
| 904 | /* Initialize the new GPE block */ |
| 905 | |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 906 | gpe_block->node = gpe_device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | gpe_block->register_count = register_count; |
| 908 | gpe_block->block_base_number = gpe_block_base_number; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 909 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 910 | ACPI_MEMCPY(&gpe_block->block_address, gpe_block_address, |
| 911 | sizeof(struct acpi_generic_address)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 912 | |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 913 | /* |
| 914 | * Create the register_info and event_info sub-structures |
| 915 | * Note: disables and clears all GPEs in the block |
| 916 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 917 | status = acpi_ev_create_gpe_info_blocks(gpe_block); |
| 918 | if (ACPI_FAILURE(status)) { |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 919 | ACPI_FREE(gpe_block); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 920 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 921 | } |
| 922 | |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 923 | /* Install the new block in the global lists */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 924 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 925 | status = acpi_ev_install_gpe_block(gpe_block, interrupt_number); |
| 926 | if (ACPI_FAILURE(status)) { |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 927 | ACPI_FREE(gpe_block); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 928 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 929 | } |
| 930 | |
| 931 | /* Find all GPE methods (_Lxx, _Exx) for this block */ |
| 932 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 933 | status = acpi_ns_walk_namespace(ACPI_TYPE_METHOD, gpe_device, |
| 934 | ACPI_UINT32_MAX, ACPI_NS_WALK_NO_UNLOCK, |
| 935 | acpi_ev_save_method_info, gpe_block, |
| 936 | NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 938 | /* Return the new block */ |
| 939 | |
| 940 | if (return_gpe_block) { |
| 941 | (*return_gpe_block) = gpe_block; |
| 942 | } |
| 943 | |
| 944 | ACPI_DEBUG_PRINT((ACPI_DB_INIT, |
| 945 | "GPE %02X to %02X [%4.4s] %u regs on int 0x%X\n", |
| 946 | (u32) gpe_block->block_base_number, |
| 947 | (u32) (gpe_block->block_base_number + |
| 948 | ((gpe_block->register_count * |
| 949 | ACPI_GPE_REGISTER_WIDTH) - 1)), |
| 950 | gpe_device->name.ascii, gpe_block->register_count, |
| 951 | interrupt_number)); |
| 952 | |
| 953 | return_ACPI_STATUS(AE_OK); |
| 954 | } |
| 955 | |
| 956 | /******************************************************************************* |
| 957 | * |
| 958 | * FUNCTION: acpi_ev_initialize_gpe_block |
| 959 | * |
| 960 | * PARAMETERS: gpe_device - Handle to the parent GPE block |
| 961 | * gpe_block - Gpe Block info |
| 962 | * |
| 963 | * RETURN: Status |
| 964 | * |
| 965 | * DESCRIPTION: Initialize and enable a GPE block. First find and run any |
| 966 | * _PRT methods associated with the block, then enable the |
| 967 | * appropriate GPEs. |
| 968 | * Note: Assumes namespace is locked. |
| 969 | * |
| 970 | ******************************************************************************/ |
| 971 | |
| 972 | acpi_status |
| 973 | acpi_ev_initialize_gpe_block(struct acpi_namespace_node *gpe_device, |
| 974 | struct acpi_gpe_block_info *gpe_block) |
| 975 | { |
| 976 | acpi_status status; |
| 977 | struct acpi_gpe_event_info *gpe_event_info; |
| 978 | struct acpi_gpe_walk_info gpe_info; |
| 979 | u32 wake_gpe_count; |
| 980 | u32 gpe_enabled_count; |
| 981 | acpi_native_uint i; |
| 982 | acpi_native_uint j; |
| 983 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 984 | ACPI_FUNCTION_TRACE(ev_initialize_gpe_block); |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 985 | |
| 986 | /* Ignore a null GPE block (e.g., if no GPE block 1 exists) */ |
| 987 | |
| 988 | if (!gpe_block) { |
| 989 | return_ACPI_STATUS(AE_OK); |
| 990 | } |
| 991 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 992 | /* |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 993 | * Runtime option: Should wake GPEs be enabled at runtime? The default |
| 994 | * is no, they should only be enabled just as the machine goes to sleep. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 995 | */ |
| 996 | if (acpi_gbl_leave_wake_gpes_disabled) { |
| 997 | /* |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 998 | * Differentiate runtime vs wake GPEs, via the _PRW control methods. |
| 999 | * Each GPE that has one or more _PRWs that reference it is by |
| 1000 | * definition a wake GPE and will not be enabled while the machine |
| 1001 | * is running. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1002 | */ |
| 1003 | gpe_info.gpe_block = gpe_block; |
| 1004 | gpe_info.gpe_device = gpe_device; |
| 1005 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1006 | status = |
| 1007 | acpi_ns_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, |
| 1008 | ACPI_UINT32_MAX, ACPI_NS_WALK_UNLOCK, |
| 1009 | acpi_ev_match_prw_and_gpe, &gpe_info, |
| 1010 | NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1011 | } |
| 1012 | |
| 1013 | /* |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 1014 | * Enable all GPEs in this block that have these attributes: |
| 1015 | * 1) are "runtime" or "run/wake" GPEs, and |
| 1016 | * 2) have a corresponding _Lxx or _Exx method |
| 1017 | * |
| 1018 | * Any other GPEs within this block must be enabled via the acpi_enable_gpe() |
| 1019 | * external interface. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1020 | */ |
| 1021 | wake_gpe_count = 0; |
| 1022 | gpe_enabled_count = 0; |
| 1023 | |
| 1024 | for (i = 0; i < gpe_block->register_count; i++) { |
| 1025 | for (j = 0; j < 8; j++) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 1026 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1027 | /* Get the info block for this particular GPE */ |
| 1028 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1029 | gpe_event_info = |
| 1030 | &gpe_block-> |
| 1031 | event_info[(i * ACPI_GPE_REGISTER_WIDTH) + j]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1032 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1033 | if (((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) == |
| 1034 | ACPI_GPE_DISPATCH_METHOD) |
| 1035 | && (gpe_event_info-> |
| 1036 | flags & ACPI_GPE_TYPE_RUNTIME)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1037 | gpe_enabled_count++; |
| 1038 | } |
| 1039 | |
| 1040 | if (gpe_event_info->flags & ACPI_GPE_TYPE_WAKE) { |
| 1041 | wake_gpe_count++; |
| 1042 | } |
| 1043 | } |
| 1044 | } |
| 1045 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1046 | ACPI_DEBUG_PRINT((ACPI_DB_INIT, |
| 1047 | "Found %u Wake, Enabled %u Runtime GPEs in this block\n", |
| 1048 | wake_gpe_count, gpe_enabled_count)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1049 | |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 1050 | /* Enable all valid runtime GPEs found above */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1051 | |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 1052 | status = acpi_hw_enable_runtime_gpe_block(NULL, gpe_block); |
| 1053 | if (ACPI_FAILURE(status)) { |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 1054 | ACPI_ERROR((AE_INFO, "Could not enable GPEs in GpeBlock %p", |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 1055 | gpe_block)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1056 | } |
| 1057 | |
Bob Moore | 96db255 | 2005-11-02 00:00:00 -0500 | [diff] [blame] | 1058 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1059 | } |
| 1060 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1061 | /******************************************************************************* |
| 1062 | * |
| 1063 | * FUNCTION: acpi_ev_gpe_initialize |
| 1064 | * |
| 1065 | * PARAMETERS: None |
| 1066 | * |
| 1067 | * RETURN: Status |
| 1068 | * |
| 1069 | * DESCRIPTION: Initialize the GPE data structures |
| 1070 | * |
| 1071 | ******************************************************************************/ |
| 1072 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1073 | acpi_status acpi_ev_gpe_initialize(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1074 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1075 | u32 register_count0 = 0; |
| 1076 | u32 register_count1 = 0; |
| 1077 | u32 gpe_number_max = 0; |
| 1078 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1079 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 1080 | ACPI_FUNCTION_TRACE(ev_gpe_initialize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1081 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1082 | status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); |
| 1083 | if (ACPI_FAILURE(status)) { |
| 1084 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1085 | } |
| 1086 | |
| 1087 | /* |
| 1088 | * Initialize the GPE Block(s) defined in the FADT |
| 1089 | * |
| 1090 | * Why the GPE register block lengths are divided by 2: From the ACPI Spec, |
| 1091 | * section "General-Purpose Event Registers", we have: |
| 1092 | * |
| 1093 | * "Each register block contains two registers of equal length |
| 1094 | * GPEx_STS and GPEx_EN (where x is 0 or 1). The length of the |
| 1095 | * GPE0_STS and GPE0_EN registers is equal to half the GPE0_LEN |
| 1096 | * The length of the GPE1_STS and GPE1_EN registers is equal to |
| 1097 | * half the GPE1_LEN. If a generic register block is not supported |
| 1098 | * then its respective block pointer and block length values in the |
| 1099 | * FADT table contain zeros. The GPE0_LEN and GPE1_LEN do not need |
| 1100 | * to be the same size." |
| 1101 | */ |
| 1102 | |
| 1103 | /* |
| 1104 | * Determine the maximum GPE number for this machine. |
| 1105 | * |
| 1106 | * Note: both GPE0 and GPE1 are optional, and either can exist without |
| 1107 | * the other. |
| 1108 | * |
| 1109 | * If EITHER the register length OR the block address are zero, then that |
| 1110 | * particular block is not supported. |
| 1111 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1112 | if (acpi_gbl_FADT->gpe0_blk_len && acpi_gbl_FADT->xgpe0_blk.address) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 1113 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1114 | /* GPE block 0 exists (has both length and address > 0) */ |
| 1115 | |
| 1116 | register_count0 = (u16) (acpi_gbl_FADT->gpe0_blk_len / 2); |
| 1117 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1118 | gpe_number_max = |
| 1119 | (register_count0 * ACPI_GPE_REGISTER_WIDTH) - 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1120 | |
| 1121 | /* Install GPE Block 0 */ |
| 1122 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1123 | status = acpi_ev_create_gpe_block(acpi_gbl_fadt_gpe_device, |
| 1124 | &acpi_gbl_FADT->xgpe0_blk, |
| 1125 | register_count0, 0, |
| 1126 | acpi_gbl_FADT->sci_int, |
| 1127 | &acpi_gbl_gpe_fadt_blocks[0]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1128 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1129 | if (ACPI_FAILURE(status)) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 1130 | ACPI_EXCEPTION((AE_INFO, status, |
| 1131 | "Could not create GPE Block 0")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1132 | } |
| 1133 | } |
| 1134 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1135 | if (acpi_gbl_FADT->gpe1_blk_len && acpi_gbl_FADT->xgpe1_blk.address) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 1136 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1137 | /* GPE block 1 exists (has both length and address > 0) */ |
| 1138 | |
| 1139 | register_count1 = (u16) (acpi_gbl_FADT->gpe1_blk_len / 2); |
| 1140 | |
| 1141 | /* Check for GPE0/GPE1 overlap (if both banks exist) */ |
| 1142 | |
| 1143 | if ((register_count0) && |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1144 | (gpe_number_max >= acpi_gbl_FADT->gpe1_base)) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 1145 | ACPI_ERROR((AE_INFO, |
| 1146 | "GPE0 block (GPE 0 to %d) overlaps the GPE1 block (GPE %d to %d) - Ignoring GPE1", |
| 1147 | gpe_number_max, acpi_gbl_FADT->gpe1_base, |
| 1148 | acpi_gbl_FADT->gpe1_base + |
| 1149 | ((register_count1 * |
| 1150 | ACPI_GPE_REGISTER_WIDTH) - 1))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1151 | |
| 1152 | /* Ignore GPE1 block by setting the register count to zero */ |
| 1153 | |
| 1154 | register_count1 = 0; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1155 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1156 | /* Install GPE Block 1 */ |
| 1157 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1158 | status = |
| 1159 | acpi_ev_create_gpe_block(acpi_gbl_fadt_gpe_device, |
| 1160 | &acpi_gbl_FADT->xgpe1_blk, |
| 1161 | register_count1, |
| 1162 | acpi_gbl_FADT->gpe1_base, |
| 1163 | acpi_gbl_FADT->sci_int, |
| 1164 | &acpi_gbl_gpe_fadt_blocks |
| 1165 | [1]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1166 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1167 | if (ACPI_FAILURE(status)) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 1168 | ACPI_EXCEPTION((AE_INFO, status, |
| 1169 | "Could not create GPE Block 1")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1170 | } |
| 1171 | |
| 1172 | /* |
| 1173 | * GPE0 and GPE1 do not have to be contiguous in the GPE number |
| 1174 | * space. However, GPE0 always starts at GPE number zero. |
| 1175 | */ |
| 1176 | gpe_number_max = acpi_gbl_FADT->gpe1_base + |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1177 | ((register_count1 * ACPI_GPE_REGISTER_WIDTH) - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1178 | } |
| 1179 | } |
| 1180 | |
| 1181 | /* Exit if there are no GPE registers */ |
| 1182 | |
| 1183 | if ((register_count0 + register_count1) == 0) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 1184 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1185 | /* GPEs are not required by ACPI, this is OK */ |
| 1186 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1187 | ACPI_DEBUG_PRINT((ACPI_DB_INIT, |
| 1188 | "There are no GPE blocks defined in the FADT\n")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1189 | status = AE_OK; |
| 1190 | goto cleanup; |
| 1191 | } |
| 1192 | |
| 1193 | /* Check for Max GPE number out-of-range */ |
| 1194 | |
| 1195 | if (gpe_number_max > ACPI_GPE_MAX) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 1196 | ACPI_ERROR((AE_INFO, |
| 1197 | "Maximum GPE number from FADT is too large: 0x%X", |
| 1198 | gpe_number_max)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1199 | status = AE_BAD_VALUE; |
| 1200 | goto cleanup; |
| 1201 | } |
| 1202 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1203 | cleanup: |
| 1204 | (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); |
| 1205 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1206 | } |