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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: evmisc - Miscellaneous event manager support functions | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
8 | * Copyright (C) 2000 - 2005, R. Byron Moore | |
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 | #include <acpi/acinterp.h> | |
48 | ||
49 | #define _COMPONENT ACPI_EVENTS | |
50 | ACPI_MODULE_NAME ("evmisc") | |
51 | ||
52 | ||
44f6c012 RM |
53 | #ifdef ACPI_DEBUG_OUTPUT |
54 | static const char *acpi_notify_value_names[] = | |
55 | { | |
56 | "Bus Check", | |
57 | "Device Check", | |
58 | "Device Wake", | |
59 | "Eject request", | |
60 | "Device Check Light", | |
61 | "Frequency Mismatch", | |
62 | "Bus Mode Mismatch", | |
63 | "Power Fault" | |
64 | }; | |
65 | #endif | |
66 | ||
67 | /* Local prototypes */ | |
68 | ||
69 | static void ACPI_SYSTEM_XFACE | |
70 | acpi_ev_notify_dispatch ( | |
71 | void *context); | |
72 | ||
73 | static void ACPI_SYSTEM_XFACE | |
74 | acpi_ev_global_lock_thread ( | |
75 | void *context); | |
76 | ||
77 | static u32 | |
78 | acpi_ev_global_lock_handler ( | |
79 | void *context); | |
80 | ||
81 | ||
1da177e4 LT |
82 | /******************************************************************************* |
83 | * | |
84 | * FUNCTION: acpi_ev_is_notify_object | |
85 | * | |
86 | * PARAMETERS: Node - Node to check | |
87 | * | |
88 | * RETURN: TRUE if notifies allowed on this object | |
89 | * | |
90 | * DESCRIPTION: Check type of node for a object that supports notifies. | |
91 | * | |
92 | * TBD: This could be replaced by a flag bit in the node. | |
93 | * | |
94 | ******************************************************************************/ | |
95 | ||
96 | u8 | |
97 | acpi_ev_is_notify_object ( | |
98 | struct acpi_namespace_node *node) | |
99 | { | |
100 | switch (node->type) { | |
101 | case ACPI_TYPE_DEVICE: | |
102 | case ACPI_TYPE_PROCESSOR: | |
103 | case ACPI_TYPE_POWER: | |
104 | case ACPI_TYPE_THERMAL: | |
105 | /* | |
106 | * These are the ONLY objects that can receive ACPI notifications | |
107 | */ | |
108 | return (TRUE); | |
109 | ||
110 | default: | |
111 | return (FALSE); | |
112 | } | |
113 | } | |
114 | ||
115 | ||
116 | /******************************************************************************* | |
117 | * | |
118 | * FUNCTION: acpi_ev_queue_notify_request | |
119 | * | |
120 | * PARAMETERS: Node - NS node for the notified object | |
121 | * notify_value - Value from the Notify() request | |
122 | * | |
123 | * RETURN: Status | |
124 | * | |
125 | * DESCRIPTION: Dispatch a device notification event to a previously | |
126 | * installed handler. | |
127 | * | |
128 | ******************************************************************************/ | |
129 | ||
1da177e4 LT |
130 | acpi_status |
131 | acpi_ev_queue_notify_request ( | |
132 | struct acpi_namespace_node *node, | |
133 | u32 notify_value) | |
134 | { | |
135 | union acpi_operand_object *obj_desc; | |
136 | union acpi_operand_object *handler_obj = NULL; | |
137 | union acpi_generic_state *notify_info; | |
138 | acpi_status status = AE_OK; | |
139 | ||
140 | ||
141 | ACPI_FUNCTION_NAME ("ev_queue_notify_request"); | |
142 | ||
143 | ||
144 | /* | |
145 | * For value 3 (Ejection Request), some device method may need to be run. | |
44f6c012 RM |
146 | * For value 2 (Device Wake) if _PRW exists, the _PS0 method may need |
147 | * to be run. | |
1da177e4 | 148 | * For value 0x80 (Status Change) on the power button or sleep button, |
44f6c012 | 149 | * initiate soft-off or sleep operation? |
1da177e4 LT |
150 | */ |
151 | ACPI_DEBUG_PRINT ((ACPI_DB_INFO, | |
152 | "Dispatching Notify(%X) on node %p\n", notify_value, node)); | |
153 | ||
154 | if (notify_value <= 7) { | |
155 | ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Notify value: %s\n", | |
156 | acpi_notify_value_names[notify_value])); | |
157 | } | |
158 | else { | |
44f6c012 RM |
159 | ACPI_DEBUG_PRINT ((ACPI_DB_INFO, |
160 | "Notify value: 0x%2.2X **Device Specific**\n", | |
161 | notify_value)); | |
1da177e4 LT |
162 | } |
163 | ||
164 | /* Get the notify object attached to the NS Node */ | |
165 | ||
166 | obj_desc = acpi_ns_get_attached_object (node); | |
167 | if (obj_desc) { | |
168 | /* We have the notify object, Get the right handler */ | |
169 | ||
170 | switch (node->type) { | |
171 | case ACPI_TYPE_DEVICE: | |
172 | case ACPI_TYPE_THERMAL: | |
173 | case ACPI_TYPE_PROCESSOR: | |
174 | case ACPI_TYPE_POWER: | |
175 | ||
176 | if (notify_value <= ACPI_MAX_SYS_NOTIFY) { | |
177 | handler_obj = obj_desc->common_notify.system_notify; | |
178 | } | |
179 | else { | |
180 | handler_obj = obj_desc->common_notify.device_notify; | |
181 | } | |
182 | break; | |
183 | ||
184 | default: | |
185 | /* All other types are not supported */ | |
186 | return (AE_TYPE); | |
187 | } | |
188 | } | |
189 | ||
190 | /* If there is any handler to run, schedule the dispatcher */ | |
191 | ||
192 | if ((acpi_gbl_system_notify.handler && (notify_value <= ACPI_MAX_SYS_NOTIFY)) || | |
193 | (acpi_gbl_device_notify.handler && (notify_value > ACPI_MAX_SYS_NOTIFY)) || | |
194 | handler_obj) { | |
195 | notify_info = acpi_ut_create_generic_state (); | |
196 | if (!notify_info) { | |
197 | return (AE_NO_MEMORY); | |
198 | } | |
199 | ||
200 | notify_info->common.data_type = ACPI_DESC_TYPE_STATE_NOTIFY; | |
201 | notify_info->notify.node = node; | |
202 | notify_info->notify.value = (u16) notify_value; | |
203 | notify_info->notify.handler_obj = handler_obj; | |
204 | ||
205 | status = acpi_os_queue_for_execution (OSD_PRIORITY_HIGH, | |
206 | acpi_ev_notify_dispatch, notify_info); | |
207 | if (ACPI_FAILURE (status)) { | |
208 | acpi_ut_delete_generic_state (notify_info); | |
209 | } | |
210 | } | |
211 | ||
212 | if (!handler_obj) { | |
213 | /* | |
214 | * There is no per-device notify handler for this device. | |
215 | * This may or may not be a problem. | |
216 | */ | |
217 | ACPI_DEBUG_PRINT ((ACPI_DB_INFO, | |
218 | "No notify handler for Notify(%4.4s, %X) node %p\n", | |
219 | acpi_ut_get_node_name (node), notify_value, node)); | |
220 | } | |
221 | ||
222 | return (status); | |
223 | } | |
224 | ||
225 | ||
226 | /******************************************************************************* | |
227 | * | |
228 | * FUNCTION: acpi_ev_notify_dispatch | |
229 | * | |
44f6c012 | 230 | * PARAMETERS: Context - To be passed to the notify handler |
1da177e4 LT |
231 | * |
232 | * RETURN: None. | |
233 | * | |
234 | * DESCRIPTION: Dispatch a device notification event to a previously | |
235 | * installed handler. | |
236 | * | |
237 | ******************************************************************************/ | |
238 | ||
44f6c012 | 239 | static void ACPI_SYSTEM_XFACE |
1da177e4 LT |
240 | acpi_ev_notify_dispatch ( |
241 | void *context) | |
242 | { | |
243 | union acpi_generic_state *notify_info = (union acpi_generic_state *) context; | |
244 | acpi_notify_handler global_handler = NULL; | |
245 | void *global_context = NULL; | |
246 | union acpi_operand_object *handler_obj; | |
247 | ||
248 | ||
249 | ACPI_FUNCTION_ENTRY (); | |
250 | ||
251 | ||
252 | /* | |
253 | * We will invoke a global notify handler if installed. | |
44f6c012 RM |
254 | * This is done _before_ we invoke the per-device handler attached |
255 | * to the device. | |
1da177e4 LT |
256 | */ |
257 | if (notify_info->notify.value <= ACPI_MAX_SYS_NOTIFY) { | |
258 | /* Global system notification handler */ | |
259 | ||
260 | if (acpi_gbl_system_notify.handler) { | |
261 | global_handler = acpi_gbl_system_notify.handler; | |
262 | global_context = acpi_gbl_system_notify.context; | |
263 | } | |
264 | } | |
265 | else { | |
266 | /* Global driver notification handler */ | |
267 | ||
268 | if (acpi_gbl_device_notify.handler) { | |
269 | global_handler = acpi_gbl_device_notify.handler; | |
270 | global_context = acpi_gbl_device_notify.context; | |
271 | } | |
272 | } | |
273 | ||
274 | /* Invoke the system handler first, if present */ | |
275 | ||
276 | if (global_handler) { | |
44f6c012 RM |
277 | global_handler (notify_info->notify.node, notify_info->notify.value, |
278 | global_context); | |
1da177e4 LT |
279 | } |
280 | ||
281 | /* Now invoke the per-device handler, if present */ | |
282 | ||
283 | handler_obj = notify_info->notify.handler_obj; | |
284 | if (handler_obj) { | |
44f6c012 RM |
285 | handler_obj->notify.handler (notify_info->notify.node, |
286 | notify_info->notify.value, | |
287 | handler_obj->notify.context); | |
1da177e4 LT |
288 | } |
289 | ||
290 | /* All done with the info object */ | |
291 | ||
292 | acpi_ut_delete_generic_state (notify_info); | |
293 | } | |
294 | ||
295 | ||
296 | /******************************************************************************* | |
297 | * | |
298 | * FUNCTION: acpi_ev_global_lock_thread | |
299 | * | |
300 | * PARAMETERS: Context - From thread interface, not used | |
301 | * | |
302 | * RETURN: None | |
303 | * | |
304 | * DESCRIPTION: Invoked by SCI interrupt handler upon acquisition of the | |
305 | * Global Lock. Simply signal all threads that are waiting | |
306 | * for the lock. | |
307 | * | |
308 | ******************************************************************************/ | |
309 | ||
310 | static void ACPI_SYSTEM_XFACE | |
311 | acpi_ev_global_lock_thread ( | |
312 | void *context) | |
313 | { | |
314 | acpi_status status; | |
315 | ||
316 | ||
317 | /* Signal threads that are waiting for the lock */ | |
318 | ||
319 | if (acpi_gbl_global_lock_thread_count) { | |
320 | /* Send sufficient units to the semaphore */ | |
321 | ||
322 | status = acpi_os_signal_semaphore (acpi_gbl_global_lock_semaphore, | |
323 | acpi_gbl_global_lock_thread_count); | |
324 | if (ACPI_FAILURE (status)) { | |
325 | ACPI_REPORT_ERROR (("Could not signal Global Lock semaphore\n")); | |
326 | } | |
327 | } | |
328 | } | |
329 | ||
330 | ||
331 | /******************************************************************************* | |
332 | * | |
333 | * FUNCTION: acpi_ev_global_lock_handler | |
334 | * | |
335 | * PARAMETERS: Context - From thread interface, not used | |
336 | * | |
337 | * RETURN: ACPI_INTERRUPT_HANDLED or ACPI_INTERRUPT_NOT_HANDLED | |
338 | * | |
339 | * DESCRIPTION: Invoked directly from the SCI handler when a global lock | |
340 | * release interrupt occurs. Grab the global lock and queue | |
341 | * the global lock thread for execution | |
342 | * | |
343 | ******************************************************************************/ | |
344 | ||
345 | static u32 | |
346 | acpi_ev_global_lock_handler ( | |
347 | void *context) | |
348 | { | |
349 | u8 acquired = FALSE; | |
350 | acpi_status status; | |
351 | ||
352 | ||
353 | /* | |
354 | * Attempt to get the lock | |
355 | * If we don't get it now, it will be marked pending and we will | |
356 | * take another interrupt when it becomes free. | |
357 | */ | |
358 | ACPI_ACQUIRE_GLOBAL_LOCK (acpi_gbl_common_fACS.global_lock, acquired); | |
359 | if (acquired) { | |
360 | /* Got the lock, now wake all threads waiting for it */ | |
361 | ||
362 | acpi_gbl_global_lock_acquired = TRUE; | |
363 | ||
364 | /* Run the Global Lock thread which will signal all waiting threads */ | |
365 | ||
366 | status = acpi_os_queue_for_execution (OSD_PRIORITY_HIGH, | |
367 | acpi_ev_global_lock_thread, context); | |
368 | if (ACPI_FAILURE (status)) { | |
369 | ACPI_REPORT_ERROR (("Could not queue Global Lock thread, %s\n", | |
370 | acpi_format_exception (status))); | |
371 | ||
372 | return (ACPI_INTERRUPT_NOT_HANDLED); | |
373 | } | |
374 | } | |
375 | ||
376 | return (ACPI_INTERRUPT_HANDLED); | |
377 | } | |
378 | ||
379 | ||
380 | /******************************************************************************* | |
381 | * | |
382 | * FUNCTION: acpi_ev_init_global_lock_handler | |
383 | * | |
384 | * PARAMETERS: None | |
385 | * | |
386 | * RETURN: Status | |
387 | * | |
388 | * DESCRIPTION: Install a handler for the global lock release event | |
389 | * | |
390 | ******************************************************************************/ | |
391 | ||
392 | acpi_status | |
44f6c012 RM |
393 | acpi_ev_init_global_lock_handler ( |
394 | void) | |
1da177e4 LT |
395 | { |
396 | acpi_status status; | |
397 | ||
398 | ||
399 | ACPI_FUNCTION_TRACE ("ev_init_global_lock_handler"); | |
400 | ||
401 | ||
402 | acpi_gbl_global_lock_present = TRUE; | |
403 | status = acpi_install_fixed_event_handler (ACPI_EVENT_GLOBAL, | |
44f6c012 | 404 | acpi_ev_global_lock_handler, NULL); |
1da177e4 LT |
405 | |
406 | /* | |
407 | * If the global lock does not exist on this platform, the attempt | |
408 | * to enable GBL_STATUS will fail (the GBL_ENABLE bit will not stick) | |
409 | * Map to AE_OK, but mark global lock as not present. | |
410 | * Any attempt to actually use the global lock will be flagged | |
411 | * with an error. | |
412 | */ | |
413 | if (status == AE_NO_HARDWARE_RESPONSE) { | |
0c9938cc RM |
414 | ACPI_REPORT_ERROR (( |
415 | "No response from Global Lock hardware, disabling lock\n")); | |
416 | ||
1da177e4 LT |
417 | acpi_gbl_global_lock_present = FALSE; |
418 | status = AE_OK; | |
419 | } | |
420 | ||
421 | return_ACPI_STATUS (status); | |
422 | } | |
423 | ||
424 | ||
425 | /****************************************************************************** | |
426 | * | |
427 | * FUNCTION: acpi_ev_acquire_global_lock | |
428 | * | |
429 | * PARAMETERS: Timeout - Max time to wait for the lock, in millisec. | |
430 | * | |
431 | * RETURN: Status | |
432 | * | |
433 | * DESCRIPTION: Attempt to gain ownership of the Global Lock. | |
434 | * | |
435 | *****************************************************************************/ | |
436 | ||
437 | acpi_status | |
438 | acpi_ev_acquire_global_lock ( | |
439 | u16 timeout) | |
440 | { | |
441 | acpi_status status = AE_OK; | |
442 | u8 acquired = FALSE; | |
443 | ||
444 | ||
445 | ACPI_FUNCTION_TRACE ("ev_acquire_global_lock"); | |
446 | ||
447 | ||
448 | #ifndef ACPI_APPLICATION | |
449 | /* Make sure that we actually have a global lock */ | |
450 | ||
451 | if (!acpi_gbl_global_lock_present) { | |
452 | return_ACPI_STATUS (AE_NO_GLOBAL_LOCK); | |
453 | } | |
454 | #endif | |
455 | ||
456 | /* One more thread wants the global lock */ | |
457 | ||
458 | acpi_gbl_global_lock_thread_count++; | |
459 | ||
44f6c012 RM |
460 | /* |
461 | * If we (OS side vs. BIOS side) have the hardware lock already, | |
462 | * we are done | |
463 | */ | |
1da177e4 LT |
464 | if (acpi_gbl_global_lock_acquired) { |
465 | return_ACPI_STATUS (AE_OK); | |
466 | } | |
467 | ||
468 | /* We must acquire the actual hardware lock */ | |
469 | ||
470 | ACPI_ACQUIRE_GLOBAL_LOCK (acpi_gbl_common_fACS.global_lock, acquired); | |
471 | if (acquired) { | |
472 | /* We got the lock */ | |
473 | ||
474 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Acquired the HW Global Lock\n")); | |
475 | ||
476 | acpi_gbl_global_lock_acquired = TRUE; | |
477 | return_ACPI_STATUS (AE_OK); | |
478 | } | |
479 | ||
480 | /* | |
481 | * Did not get the lock. The pending bit was set above, and we must now | |
482 | * wait until we get the global lock released interrupt. | |
483 | */ | |
484 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Waiting for the HW Global Lock\n")); | |
485 | ||
486 | /* | |
487 | * Acquire the global lock semaphore first. | |
488 | * Since this wait will block, we must release the interpreter | |
489 | */ | |
490 | status = acpi_ex_system_wait_semaphore (acpi_gbl_global_lock_semaphore, | |
491 | timeout); | |
492 | return_ACPI_STATUS (status); | |
493 | } | |
494 | ||
495 | ||
496 | /******************************************************************************* | |
497 | * | |
498 | * FUNCTION: acpi_ev_release_global_lock | |
499 | * | |
500 | * PARAMETERS: None | |
501 | * | |
502 | * RETURN: Status | |
503 | * | |
504 | * DESCRIPTION: Releases ownership of the Global Lock. | |
505 | * | |
506 | ******************************************************************************/ | |
507 | ||
508 | acpi_status | |
44f6c012 RM |
509 | acpi_ev_release_global_lock ( |
510 | void) | |
1da177e4 LT |
511 | { |
512 | u8 pending = FALSE; | |
513 | acpi_status status = AE_OK; | |
514 | ||
515 | ||
516 | ACPI_FUNCTION_TRACE ("ev_release_global_lock"); | |
517 | ||
518 | ||
519 | if (!acpi_gbl_global_lock_thread_count) { | |
44f6c012 RM |
520 | ACPI_REPORT_WARNING(( |
521 | "Cannot release HW Global Lock, it has not been acquired\n")); | |
1da177e4 LT |
522 | return_ACPI_STATUS (AE_NOT_ACQUIRED); |
523 | } | |
524 | ||
525 | /* One fewer thread has the global lock */ | |
526 | ||
527 | acpi_gbl_global_lock_thread_count--; | |
528 | if (acpi_gbl_global_lock_thread_count) { | |
529 | /* There are still some threads holding the lock, cannot release */ | |
530 | ||
531 | return_ACPI_STATUS (AE_OK); | |
532 | } | |
533 | ||
534 | /* | |
535 | * No more threads holding lock, we can do the actual hardware | |
536 | * release | |
537 | */ | |
538 | ACPI_RELEASE_GLOBAL_LOCK (acpi_gbl_common_fACS.global_lock, pending); | |
539 | acpi_gbl_global_lock_acquired = FALSE; | |
540 | ||
541 | /* | |
542 | * If the pending bit was set, we must write GBL_RLS to the control | |
543 | * register | |
544 | */ | |
545 | if (pending) { | |
44f6c012 RM |
546 | status = acpi_set_register (ACPI_BITREG_GLOBAL_LOCK_RELEASE, |
547 | 1, ACPI_MTX_LOCK); | |
1da177e4 LT |
548 | } |
549 | ||
550 | return_ACPI_STATUS (status); | |
551 | } | |
552 | ||
553 | ||
554 | /****************************************************************************** | |
555 | * | |
556 | * FUNCTION: acpi_ev_terminate | |
557 | * | |
558 | * PARAMETERS: none | |
559 | * | |
560 | * RETURN: none | |
561 | * | |
562 | * DESCRIPTION: Disable events and free memory allocated for table storage. | |
563 | * | |
564 | ******************************************************************************/ | |
565 | ||
566 | void | |
44f6c012 RM |
567 | acpi_ev_terminate ( |
568 | void) | |
1da177e4 LT |
569 | { |
570 | acpi_native_uint i; | |
571 | acpi_status status; | |
572 | ||
573 | ||
574 | ACPI_FUNCTION_TRACE ("ev_terminate"); | |
575 | ||
576 | ||
577 | if (acpi_gbl_events_initialized) { | |
578 | /* | |
579 | * Disable all event-related functionality. | |
580 | * In all cases, on error, print a message but obviously we don't abort. | |
581 | */ | |
582 | ||
583 | /* Disable all fixed events */ | |
584 | ||
585 | for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) { | |
586 | status = acpi_disable_event ((u32) i, 0); | |
587 | if (ACPI_FAILURE (status)) { | |
44f6c012 RM |
588 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, |
589 | "Could not disable fixed event %d\n", (u32) i)); | |
1da177e4 LT |
590 | } |
591 | } | |
592 | ||
593 | /* Disable all GPEs in all GPE blocks */ | |
594 | ||
73459f73 | 595 | status = acpi_ev_walk_gpe_list (acpi_hw_disable_gpe_block); |
1da177e4 LT |
596 | |
597 | /* Remove SCI handler */ | |
598 | ||
599 | status = acpi_ev_remove_sci_handler (); | |
600 | if (ACPI_FAILURE(status)) { | |
44f6c012 RM |
601 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, |
602 | "Could not remove SCI handler\n")); | |
1da177e4 LT |
603 | } |
604 | } | |
605 | ||
606 | /* Deallocate all handler objects installed within GPE info structs */ | |
607 | ||
73459f73 | 608 | status = acpi_ev_walk_gpe_list (acpi_ev_delete_gpe_handlers); |
1da177e4 LT |
609 | |
610 | /* Return to original mode if necessary */ | |
611 | ||
612 | if (acpi_gbl_original_mode == ACPI_SYS_MODE_LEGACY) { | |
613 | status = acpi_disable (); | |
614 | if (ACPI_FAILURE (status)) { | |
615 | ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "acpi_disable failed\n")); | |
616 | } | |
617 | } | |
618 | return_VOID; | |
619 | } | |
620 |