diff options
author | Len Brown <len.brown@intel.com> | 2009-01-09 00:13:17 -0500 |
---|---|---|
committer | Len Brown <len.brown@intel.com> | 2009-01-09 03:30:47 -0500 |
commit | 95b482a8d31116f3f5c2a5089569393234d06385 (patch) | |
tree | f32aec8673a285a9d188948be97af3034ee06e93 /drivers/acpi/events/evmisc.c | |
parent | 6620e0c49f577454b772fb381543d60ae53eb885 (diff) |
ACPICA: create acpica/ directory
also, delete sleep/ and delete ACPI_CFLAGS from Makefile
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/events/evmisc.c')
-rw-r--r-- | drivers/acpi/events/evmisc.c | 621 |
1 files changed, 0 insertions, 621 deletions
diff --git a/drivers/acpi/events/evmisc.c b/drivers/acpi/events/evmisc.c deleted file mode 100644 index 16f2c1a00167..000000000000 --- a/drivers/acpi/events/evmisc.c +++ /dev/null | |||
@@ -1,621 +0,0 @@ | |||
1 | /****************************************************************************** | ||
2 | * | ||
3 | * Module Name: evmisc - Miscellaneous event manager support functions | ||
4 | * | ||
5 | *****************************************************************************/ | ||
6 | |||
7 | /* | ||
8 | * Copyright (C) 2000 - 2008, Intel Corp. | ||
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/accommon.h> | ||
46 | #include <acpi/acevents.h> | ||
47 | #include <acpi/acnamesp.h> | ||
48 | #include <acpi/acinterp.h> | ||
49 | |||
50 | #define _COMPONENT ACPI_EVENTS | ||
51 | ACPI_MODULE_NAME("evmisc") | ||
52 | |||
53 | /* Local prototypes */ | ||
54 | static void ACPI_SYSTEM_XFACE acpi_ev_notify_dispatch(void *context); | ||
55 | |||
56 | static u32 acpi_ev_global_lock_handler(void *context); | ||
57 | |||
58 | static acpi_status acpi_ev_remove_global_lock_handler(void); | ||
59 | |||
60 | /******************************************************************************* | ||
61 | * | ||
62 | * FUNCTION: acpi_ev_is_notify_object | ||
63 | * | ||
64 | * PARAMETERS: Node - Node to check | ||
65 | * | ||
66 | * RETURN: TRUE if notifies allowed on this object | ||
67 | * | ||
68 | * DESCRIPTION: Check type of node for a object that supports notifies. | ||
69 | * | ||
70 | * TBD: This could be replaced by a flag bit in the node. | ||
71 | * | ||
72 | ******************************************************************************/ | ||
73 | |||
74 | u8 acpi_ev_is_notify_object(struct acpi_namespace_node *node) | ||
75 | { | ||
76 | switch (node->type) { | ||
77 | case ACPI_TYPE_DEVICE: | ||
78 | case ACPI_TYPE_PROCESSOR: | ||
79 | case ACPI_TYPE_THERMAL: | ||
80 | /* | ||
81 | * These are the ONLY objects that can receive ACPI notifications | ||
82 | */ | ||
83 | return (TRUE); | ||
84 | |||
85 | default: | ||
86 | return (FALSE); | ||
87 | } | ||
88 | } | ||
89 | |||
90 | /******************************************************************************* | ||
91 | * | ||
92 | * FUNCTION: acpi_ev_queue_notify_request | ||
93 | * | ||
94 | * PARAMETERS: Node - NS node for the notified object | ||
95 | * notify_value - Value from the Notify() request | ||
96 | * | ||
97 | * RETURN: Status | ||
98 | * | ||
99 | * DESCRIPTION: Dispatch a device notification event to a previously | ||
100 | * installed handler. | ||
101 | * | ||
102 | ******************************************************************************/ | ||
103 | |||
104 | acpi_status | ||
105 | acpi_ev_queue_notify_request(struct acpi_namespace_node * node, | ||
106 | u32 notify_value) | ||
107 | { | ||
108 | union acpi_operand_object *obj_desc; | ||
109 | union acpi_operand_object *handler_obj = NULL; | ||
110 | union acpi_generic_state *notify_info; | ||
111 | acpi_status status = AE_OK; | ||
112 | |||
113 | ACPI_FUNCTION_NAME(ev_queue_notify_request); | ||
114 | |||
115 | /* | ||
116 | * For value 3 (Ejection Request), some device method may need to be run. | ||
117 | * For value 2 (Device Wake) if _PRW exists, the _PS0 method may need | ||
118 | * to be run. | ||
119 | * For value 0x80 (Status Change) on the power button or sleep button, | ||
120 | * initiate soft-off or sleep operation? | ||
121 | */ | ||
122 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | ||
123 | "Dispatching Notify on [%4.4s] Node %p Value 0x%2.2X (%s)\n", | ||
124 | acpi_ut_get_node_name(node), node, notify_value, | ||
125 | acpi_ut_get_notify_name(notify_value))); | ||
126 | |||
127 | /* Get the notify object attached to the NS Node */ | ||
128 | |||
129 | obj_desc = acpi_ns_get_attached_object(node); | ||
130 | if (obj_desc) { | ||
131 | |||
132 | /* We have the notify object, Get the right handler */ | ||
133 | |||
134 | switch (node->type) { | ||
135 | |||
136 | /* Notify allowed only on these types */ | ||
137 | |||
138 | case ACPI_TYPE_DEVICE: | ||
139 | case ACPI_TYPE_THERMAL: | ||
140 | case ACPI_TYPE_PROCESSOR: | ||
141 | |||
142 | if (notify_value <= ACPI_MAX_SYS_NOTIFY) { | ||
143 | handler_obj = | ||
144 | obj_desc->common_notify.system_notify; | ||
145 | } else { | ||
146 | handler_obj = | ||
147 | obj_desc->common_notify.device_notify; | ||
148 | } | ||
149 | break; | ||
150 | |||
151 | default: | ||
152 | |||
153 | /* All other types are not supported */ | ||
154 | |||
155 | return (AE_TYPE); | ||
156 | } | ||
157 | } | ||
158 | |||
159 | /* | ||
160 | * If there is any handler to run, schedule the dispatcher. | ||
161 | * Check for: | ||
162 | * 1) Global system notify handler | ||
163 | * 2) Global device notify handler | ||
164 | * 3) Per-device notify handler | ||
165 | */ | ||
166 | if ((acpi_gbl_system_notify.handler | ||
167 | && (notify_value <= ACPI_MAX_SYS_NOTIFY)) | ||
168 | || (acpi_gbl_device_notify.handler | ||
169 | && (notify_value > ACPI_MAX_SYS_NOTIFY)) || handler_obj) { | ||
170 | notify_info = acpi_ut_create_generic_state(); | ||
171 | if (!notify_info) { | ||
172 | return (AE_NO_MEMORY); | ||
173 | } | ||
174 | |||
175 | if (!handler_obj) { | ||
176 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | ||
177 | "Executing system notify handler for Notify (%4.4s, %X) node %p\n", | ||
178 | acpi_ut_get_node_name(node), | ||
179 | notify_value, node)); | ||
180 | } | ||
181 | |||
182 | notify_info->common.descriptor_type = | ||
183 | ACPI_DESC_TYPE_STATE_NOTIFY; | ||
184 | notify_info->notify.node = node; | ||
185 | notify_info->notify.value = (u16) notify_value; | ||
186 | notify_info->notify.handler_obj = handler_obj; | ||
187 | |||
188 | status = | ||
189 | acpi_os_execute(OSL_NOTIFY_HANDLER, acpi_ev_notify_dispatch, | ||
190 | notify_info); | ||
191 | if (ACPI_FAILURE(status)) { | ||
192 | acpi_ut_delete_generic_state(notify_info); | ||
193 | } | ||
194 | } else { | ||
195 | /* There is no notify handler (per-device or system) for this device */ | ||
196 | |||
197 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | ||
198 | "No notify handler for Notify (%4.4s, %X) node %p\n", | ||
199 | acpi_ut_get_node_name(node), notify_value, | ||
200 | node)); | ||
201 | } | ||
202 | |||
203 | return (status); | ||
204 | } | ||
205 | |||
206 | /******************************************************************************* | ||
207 | * | ||
208 | * FUNCTION: acpi_ev_notify_dispatch | ||
209 | * | ||
210 | * PARAMETERS: Context - To be passed to the notify handler | ||
211 | * | ||
212 | * RETURN: None. | ||
213 | * | ||
214 | * DESCRIPTION: Dispatch a device notification event to a previously | ||
215 | * installed handler. | ||
216 | * | ||
217 | ******************************************************************************/ | ||
218 | |||
219 | static void ACPI_SYSTEM_XFACE acpi_ev_notify_dispatch(void *context) | ||
220 | { | ||
221 | union acpi_generic_state *notify_info = | ||
222 | (union acpi_generic_state *)context; | ||
223 | acpi_notify_handler global_handler = NULL; | ||
224 | void *global_context = NULL; | ||
225 | union acpi_operand_object *handler_obj; | ||
226 | |||
227 | ACPI_FUNCTION_ENTRY(); | ||
228 | |||
229 | /* | ||
230 | * We will invoke a global notify handler if installed. This is done | ||
231 | * _before_ we invoke the per-device handler attached to the device. | ||
232 | */ | ||
233 | if (notify_info->notify.value <= ACPI_MAX_SYS_NOTIFY) { | ||
234 | |||
235 | /* Global system notification handler */ | ||
236 | |||
237 | if (acpi_gbl_system_notify.handler) { | ||
238 | global_handler = acpi_gbl_system_notify.handler; | ||
239 | global_context = acpi_gbl_system_notify.context; | ||
240 | } | ||
241 | } else { | ||
242 | /* Global driver notification handler */ | ||
243 | |||
244 | if (acpi_gbl_device_notify.handler) { | ||
245 | global_handler = acpi_gbl_device_notify.handler; | ||
246 | global_context = acpi_gbl_device_notify.context; | ||
247 | } | ||
248 | } | ||
249 | |||
250 | /* Invoke the system handler first, if present */ | ||
251 | |||
252 | if (global_handler) { | ||
253 | global_handler(notify_info->notify.node, | ||
254 | notify_info->notify.value, global_context); | ||
255 | } | ||
256 | |||
257 | /* Now invoke the per-device handler, if present */ | ||
258 | |||
259 | handler_obj = notify_info->notify.handler_obj; | ||
260 | if (handler_obj) { | ||
261 | handler_obj->notify.handler(notify_info->notify.node, | ||
262 | notify_info->notify.value, | ||
263 | handler_obj->notify.context); | ||
264 | } | ||
265 | |||
266 | /* All done with the info object */ | ||
267 | |||
268 | acpi_ut_delete_generic_state(notify_info); | ||
269 | } | ||
270 | |||
271 | /******************************************************************************* | ||
272 | * | ||
273 | * FUNCTION: acpi_ev_global_lock_handler | ||
274 | * | ||
275 | * PARAMETERS: Context - From thread interface, not used | ||
276 | * | ||
277 | * RETURN: ACPI_INTERRUPT_HANDLED | ||
278 | * | ||
279 | * DESCRIPTION: Invoked directly from the SCI handler when a global lock | ||
280 | * release interrupt occurs. Attempt to acquire the global lock, | ||
281 | * if successful, signal the thread waiting for the lock. | ||
282 | * | ||
283 | * NOTE: Assumes that the semaphore can be signaled from interrupt level. If | ||
284 | * this is not possible for some reason, a separate thread will have to be | ||
285 | * scheduled to do this. | ||
286 | * | ||
287 | ******************************************************************************/ | ||
288 | |||
289 | static u32 acpi_ev_global_lock_handler(void *context) | ||
290 | { | ||
291 | u8 acquired = FALSE; | ||
292 | |||
293 | /* | ||
294 | * Attempt to get the lock. | ||
295 | * | ||
296 | * If we don't get it now, it will be marked pending and we will | ||
297 | * take another interrupt when it becomes free. | ||
298 | */ | ||
299 | ACPI_ACQUIRE_GLOBAL_LOCK(acpi_gbl_FACS, acquired); | ||
300 | if (acquired) { | ||
301 | |||
302 | /* Got the lock, now wake all threads waiting for it */ | ||
303 | |||
304 | acpi_gbl_global_lock_acquired = TRUE; | ||
305 | /* Send a unit to the semaphore */ | ||
306 | |||
307 | if (ACPI_FAILURE | ||
308 | (acpi_os_signal_semaphore | ||
309 | (acpi_gbl_global_lock_semaphore, 1))) { | ||
310 | ACPI_ERROR((AE_INFO, | ||
311 | "Could not signal Global Lock semaphore")); | ||
312 | } | ||
313 | } | ||
314 | |||
315 | return (ACPI_INTERRUPT_HANDLED); | ||
316 | } | ||
317 | |||
318 | /******************************************************************************* | ||
319 | * | ||
320 | * FUNCTION: acpi_ev_init_global_lock_handler | ||
321 | * | ||
322 | * PARAMETERS: None | ||
323 | * | ||
324 | * RETURN: Status | ||
325 | * | ||
326 | * DESCRIPTION: Install a handler for the global lock release event | ||
327 | * | ||
328 | ******************************************************************************/ | ||
329 | |||
330 | acpi_status acpi_ev_init_global_lock_handler(void) | ||
331 | { | ||
332 | acpi_status status; | ||
333 | |||
334 | ACPI_FUNCTION_TRACE(ev_init_global_lock_handler); | ||
335 | |||
336 | /* Attempt installation of the global lock handler */ | ||
337 | |||
338 | status = acpi_install_fixed_event_handler(ACPI_EVENT_GLOBAL, | ||
339 | acpi_ev_global_lock_handler, | ||
340 | NULL); | ||
341 | |||
342 | /* | ||
343 | * If the global lock does not exist on this platform, the attempt to | ||
344 | * enable GBL_STATUS will fail (the GBL_ENABLE bit will not stick). | ||
345 | * Map to AE_OK, but mark global lock as not present. Any attempt to | ||
346 | * actually use the global lock will be flagged with an error. | ||
347 | */ | ||
348 | if (status == AE_NO_HARDWARE_RESPONSE) { | ||
349 | ACPI_ERROR((AE_INFO, | ||
350 | "No response from Global Lock hardware, disabling lock")); | ||
351 | |||
352 | acpi_gbl_global_lock_present = FALSE; | ||
353 | return_ACPI_STATUS(AE_OK); | ||
354 | } | ||
355 | |||
356 | acpi_gbl_global_lock_present = TRUE; | ||
357 | return_ACPI_STATUS(status); | ||
358 | } | ||
359 | |||
360 | /******************************************************************************* | ||
361 | * | ||
362 | * FUNCTION: acpi_ev_remove_global_lock_handler | ||
363 | * | ||
364 | * PARAMETERS: None | ||
365 | * | ||
366 | * RETURN: Status | ||
367 | * | ||
368 | * DESCRIPTION: Remove the handler for the Global Lock | ||
369 | * | ||
370 | ******************************************************************************/ | ||
371 | |||
372 | static acpi_status acpi_ev_remove_global_lock_handler(void) | ||
373 | { | ||
374 | acpi_status status; | ||
375 | |||
376 | ACPI_FUNCTION_TRACE(ev_remove_global_lock_handler); | ||
377 | |||
378 | acpi_gbl_global_lock_present = FALSE; | ||
379 | status = acpi_remove_fixed_event_handler(ACPI_EVENT_GLOBAL, | ||
380 | acpi_ev_global_lock_handler); | ||
381 | |||
382 | return_ACPI_STATUS(status); | ||
383 | } | ||
384 | |||
385 | /****************************************************************************** | ||
386 | * | ||
387 | * FUNCTION: acpi_ev_acquire_global_lock | ||
388 | * | ||
389 | * PARAMETERS: Timeout - Max time to wait for the lock, in millisec. | ||
390 | * | ||
391 | * RETURN: Status | ||
392 | * | ||
393 | * DESCRIPTION: Attempt to gain ownership of the Global Lock. | ||
394 | * | ||
395 | * MUTEX: Interpreter must be locked | ||
396 | * | ||
397 | * Note: The original implementation allowed multiple threads to "acquire" the | ||
398 | * Global Lock, and the OS would hold the lock until the last thread had | ||
399 | * released it. However, this could potentially starve the BIOS out of the | ||
400 | * lock, especially in the case where there is a tight handshake between the | ||
401 | * Embedded Controller driver and the BIOS. Therefore, this implementation | ||
402 | * allows only one thread to acquire the HW Global Lock at a time, and makes | ||
403 | * the global lock appear as a standard mutex on the OS side. | ||
404 | * | ||
405 | *****************************************************************************/ | ||
406 | static acpi_thread_id acpi_ev_global_lock_thread_id; | ||
407 | static int acpi_ev_global_lock_acquired; | ||
408 | |||
409 | acpi_status acpi_ev_acquire_global_lock(u16 timeout) | ||
410 | { | ||
411 | acpi_status status = AE_OK; | ||
412 | u8 acquired = FALSE; | ||
413 | |||
414 | ACPI_FUNCTION_TRACE(ev_acquire_global_lock); | ||
415 | |||
416 | /* | ||
417 | * Only one thread can acquire the GL at a time, the global_lock_mutex | ||
418 | * enforces this. This interface releases the interpreter if we must wait. | ||
419 | */ | ||
420 | status = acpi_ex_system_wait_mutex( | ||
421 | acpi_gbl_global_lock_mutex->mutex.os_mutex, 0); | ||
422 | if (status == AE_TIME) { | ||
423 | if (acpi_ev_global_lock_thread_id == acpi_os_get_thread_id()) { | ||
424 | acpi_ev_global_lock_acquired++; | ||
425 | return AE_OK; | ||
426 | } | ||
427 | } | ||
428 | |||
429 | if (ACPI_FAILURE(status)) { | ||
430 | status = acpi_ex_system_wait_mutex( | ||
431 | acpi_gbl_global_lock_mutex->mutex.os_mutex, | ||
432 | timeout); | ||
433 | } | ||
434 | if (ACPI_FAILURE(status)) { | ||
435 | return_ACPI_STATUS(status); | ||
436 | } | ||
437 | |||
438 | acpi_ev_global_lock_thread_id = acpi_os_get_thread_id(); | ||
439 | acpi_ev_global_lock_acquired++; | ||
440 | |||
441 | /* | ||
442 | * Update the global lock handle and check for wraparound. The handle is | ||
443 | * only used for the external global lock interfaces, but it is updated | ||
444 | * here to properly handle the case where a single thread may acquire the | ||
445 | * lock via both the AML and the acpi_acquire_global_lock interfaces. The | ||
446 | * handle is therefore updated on the first acquire from a given thread | ||
447 | * regardless of where the acquisition request originated. | ||
448 | */ | ||
449 | acpi_gbl_global_lock_handle++; | ||
450 | if (acpi_gbl_global_lock_handle == 0) { | ||
451 | acpi_gbl_global_lock_handle = 1; | ||
452 | } | ||
453 | |||
454 | /* | ||
455 | * Make sure that a global lock actually exists. If not, just treat the | ||
456 | * lock as a standard mutex. | ||
457 | */ | ||
458 | if (!acpi_gbl_global_lock_present) { | ||
459 | acpi_gbl_global_lock_acquired = TRUE; | ||
460 | return_ACPI_STATUS(AE_OK); | ||
461 | } | ||
462 | |||
463 | /* Attempt to acquire the actual hardware lock */ | ||
464 | |||
465 | ACPI_ACQUIRE_GLOBAL_LOCK(acpi_gbl_FACS, acquired); | ||
466 | if (acquired) { | ||
467 | |||
468 | /* We got the lock */ | ||
469 | |||
470 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | ||
471 | "Acquired hardware Global Lock\n")); | ||
472 | |||
473 | acpi_gbl_global_lock_acquired = TRUE; | ||
474 | return_ACPI_STATUS(AE_OK); | ||
475 | } | ||
476 | |||
477 | /* | ||
478 | * Did not get the lock. The pending bit was set above, and we must now | ||
479 | * wait until we get the global lock released interrupt. | ||
480 | */ | ||
481 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Waiting for hardware Global Lock\n")); | ||
482 | |||
483 | /* | ||
484 | * Wait for handshake with the global lock interrupt handler. | ||
485 | * This interface releases the interpreter if we must wait. | ||
486 | */ | ||
487 | status = acpi_ex_system_wait_semaphore(acpi_gbl_global_lock_semaphore, | ||
488 | ACPI_WAIT_FOREVER); | ||
489 | |||
490 | return_ACPI_STATUS(status); | ||
491 | } | ||
492 | |||
493 | /******************************************************************************* | ||
494 | * | ||
495 | * FUNCTION: acpi_ev_release_global_lock | ||
496 | * | ||
497 | * PARAMETERS: None | ||
498 | * | ||
499 | * RETURN: Status | ||
500 | * | ||
501 | * DESCRIPTION: Releases ownership of the Global Lock. | ||
502 | * | ||
503 | ******************************************************************************/ | ||
504 | |||
505 | acpi_status acpi_ev_release_global_lock(void) | ||
506 | { | ||
507 | u8 pending = FALSE; | ||
508 | acpi_status status = AE_OK; | ||
509 | |||
510 | ACPI_FUNCTION_TRACE(ev_release_global_lock); | ||
511 | |||
512 | /* Lock must be already acquired */ | ||
513 | |||
514 | if (!acpi_gbl_global_lock_acquired) { | ||
515 | ACPI_WARNING((AE_INFO, | ||
516 | "Cannot release the ACPI Global Lock, it has not been acquired")); | ||
517 | return_ACPI_STATUS(AE_NOT_ACQUIRED); | ||
518 | } | ||
519 | |||
520 | acpi_ev_global_lock_acquired--; | ||
521 | if (acpi_ev_global_lock_acquired > 0) { | ||
522 | return AE_OK; | ||
523 | } | ||
524 | |||
525 | if (acpi_gbl_global_lock_present) { | ||
526 | |||
527 | /* Allow any thread to release the lock */ | ||
528 | |||
529 | ACPI_RELEASE_GLOBAL_LOCK(acpi_gbl_FACS, pending); | ||
530 | |||
531 | /* | ||
532 | * If the pending bit was set, we must write GBL_RLS to the control | ||
533 | * register | ||
534 | */ | ||
535 | if (pending) { | ||
536 | status = | ||
537 | acpi_set_register(ACPI_BITREG_GLOBAL_LOCK_RELEASE, | ||
538 | 1); | ||
539 | } | ||
540 | |||
541 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | ||
542 | "Released hardware Global Lock\n")); | ||
543 | } | ||
544 | |||
545 | acpi_gbl_global_lock_acquired = FALSE; | ||
546 | |||
547 | /* Release the local GL mutex */ | ||
548 | acpi_ev_global_lock_thread_id = NULL; | ||
549 | acpi_ev_global_lock_acquired = 0; | ||
550 | acpi_os_release_mutex(acpi_gbl_global_lock_mutex->mutex.os_mutex); | ||
551 | return_ACPI_STATUS(status); | ||
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 acpi_ev_terminate(void) | ||
567 | { | ||
568 | u32 i; | ||
569 | acpi_status status; | ||
570 | |||
571 | ACPI_FUNCTION_TRACE(ev_terminate); | ||
572 | |||
573 | if (acpi_gbl_events_initialized) { | ||
574 | /* | ||
575 | * Disable all event-related functionality. In all cases, on error, | ||
576 | * print a message but obviously we don't abort. | ||
577 | */ | ||
578 | |||
579 | /* Disable all fixed events */ | ||
580 | |||
581 | for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) { | ||
582 | status = acpi_disable_event(i, 0); | ||
583 | if (ACPI_FAILURE(status)) { | ||
584 | ACPI_ERROR((AE_INFO, | ||
585 | "Could not disable fixed event %d", | ||
586 | (u32) i)); | ||
587 | } | ||
588 | } | ||
589 | |||
590 | /* Disable all GPEs in all GPE blocks */ | ||
591 | |||
592 | status = acpi_ev_walk_gpe_list(acpi_hw_disable_gpe_block, NULL); | ||
593 | |||
594 | /* Remove SCI handler */ | ||
595 | |||
596 | status = acpi_ev_remove_sci_handler(); | ||
597 | if (ACPI_FAILURE(status)) { | ||
598 | ACPI_ERROR((AE_INFO, "Could not remove SCI handler")); | ||
599 | } | ||
600 | |||
601 | status = acpi_ev_remove_global_lock_handler(); | ||
602 | if (ACPI_FAILURE(status)) { | ||
603 | ACPI_ERROR((AE_INFO, | ||
604 | "Could not remove Global Lock handler")); | ||
605 | } | ||
606 | } | ||
607 | |||
608 | /* Deallocate all handler objects installed within GPE info structs */ | ||
609 | |||
610 | status = acpi_ev_walk_gpe_list(acpi_ev_delete_gpe_handlers, NULL); | ||
611 | |||
612 | /* Return to original mode if necessary */ | ||
613 | |||
614 | if (acpi_gbl_original_mode == ACPI_SYS_MODE_LEGACY) { | ||
615 | status = acpi_disable(); | ||
616 | if (ACPI_FAILURE(status)) { | ||
617 | ACPI_WARNING((AE_INFO, "AcpiDisable failed")); | ||
618 | } | ||
619 | } | ||
620 | return_VOID; | ||
621 | } | ||