Commit | Line | Data |
---|---|---|
3cfd53d5 LM |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: evxfgpe - External Interfaces for General Purpose Events (GPEs) | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
25f044e6 | 8 | * Copyright (C) 2000 - 2013, Intel Corp. |
3cfd53d5 LM |
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 | ||
214f2c90 | 44 | #include <linux/export.h> |
3cfd53d5 LM |
45 | #include <acpi/acpi.h> |
46 | #include "accommon.h" | |
47 | #include "acevents.h" | |
48 | #include "acnamesp.h" | |
49 | ||
50 | #define _COMPONENT ACPI_EVENTS | |
51 | ACPI_MODULE_NAME("evxfgpe") | |
52 | ||
33620c54 | 53 | #if (!ACPI_REDUCED_HARDWARE) /* Entire module */ |
75c8044f | 54 | /******************************************************************************* |
3cfd53d5 | 55 | * |
3a37898d | 56 | * FUNCTION: acpi_update_all_gpes |
3cfd53d5 LM |
57 | * |
58 | * PARAMETERS: None | |
59 | * | |
da503373 LM |
60 | * RETURN: Status |
61 | * | |
62 | * DESCRIPTION: Complete GPE initialization and enable all GPEs that have | |
63 | * associated _Lxx or _Exx methods and are not pointed to by any | |
64 | * device _PRW methods (this indicates that these GPEs are | |
65 | * generally intended for system or device wakeup. Such GPEs | |
66 | * have to be enabled directly when the devices whose _PRW | |
67 | * methods point to them are set up for wakeup signaling.) | |
3cfd53d5 | 68 | * |
da503373 LM |
69 | * NOTE: Should be called after any GPEs are added to the system. Primarily, |
70 | * after the system _PRW methods have been run, but also after a GPE Block | |
71 | * Device has been added or if any new GPE methods have been added via a | |
72 | * dynamic table load. | |
3cfd53d5 LM |
73 | * |
74 | ******************************************************************************/ | |
75 | ||
3a37898d | 76 | acpi_status acpi_update_all_gpes(void) |
3cfd53d5 LM |
77 | { |
78 | acpi_status status; | |
79 | ||
3a37898d | 80 | ACPI_FUNCTION_TRACE(acpi_update_all_gpes); |
3cfd53d5 LM |
81 | |
82 | status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); | |
83 | if (ACPI_FAILURE(status)) { | |
84 | return_ACPI_STATUS(status); | |
3a37898d LM |
85 | } |
86 | ||
87 | if (acpi_gbl_all_gpes_initialized) { | |
88 | goto unlock_and_exit; | |
3cfd53d5 LM |
89 | } |
90 | ||
91 | status = acpi_ev_walk_gpe_list(acpi_ev_initialize_gpe_block, NULL); | |
92 | if (ACPI_SUCCESS(status)) { | |
3a37898d | 93 | acpi_gbl_all_gpes_initialized = TRUE; |
3cfd53d5 LM |
94 | } |
95 | ||
3a37898d | 96 | unlock_and_exit: |
3cfd53d5 LM |
97 | (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); |
98 | ||
99 | return_ACPI_STATUS(status); | |
100 | } | |
101 | ||
3a37898d LM |
102 | ACPI_EXPORT_SYMBOL(acpi_update_all_gpes) |
103 | ||
3cfd53d5 LM |
104 | /******************************************************************************* |
105 | * | |
106 | * FUNCTION: acpi_enable_gpe | |
107 | * | |
108 | * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1 | |
109 | * gpe_number - GPE level within the GPE block | |
110 | * | |
111 | * RETURN: Status | |
112 | * | |
113 | * DESCRIPTION: Add a reference to a GPE. On the first reference, the GPE is | |
114 | * hardware-enabled. | |
115 | * | |
116 | ******************************************************************************/ | |
117 | ||
118 | acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number) | |
119 | { | |
120 | acpi_status status = AE_BAD_PARAMETER; | |
121 | struct acpi_gpe_event_info *gpe_event_info; | |
122 | acpi_cpu_flags flags; | |
123 | ||
124 | ACPI_FUNCTION_TRACE(acpi_enable_gpe); | |
125 | ||
126 | flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); | |
127 | ||
128 | /* Ensure that we have a valid GPE number */ | |
129 | ||
130 | gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number); | |
131 | if (gpe_event_info) { | |
3a37898d | 132 | status = acpi_ev_add_gpe_reference(gpe_event_info); |
3cfd53d5 LM |
133 | } |
134 | ||
135 | acpi_os_release_lock(acpi_gbl_gpe_lock, flags); | |
136 | return_ACPI_STATUS(status); | |
137 | } | |
138 | ACPI_EXPORT_SYMBOL(acpi_enable_gpe) | |
139 | ||
140 | /******************************************************************************* | |
141 | * | |
142 | * FUNCTION: acpi_disable_gpe | |
143 | * | |
144 | * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1 | |
145 | * gpe_number - GPE level within the GPE block | |
146 | * | |
147 | * RETURN: Status | |
148 | * | |
149 | * DESCRIPTION: Remove a reference to a GPE. When the last reference is | |
150 | * removed, only then is the GPE disabled (for runtime GPEs), or | |
151 | * the GPE mask bit disabled (for wake GPEs) | |
152 | * | |
153 | ******************************************************************************/ | |
154 | ||
155 | acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number) | |
156 | { | |
157 | acpi_status status = AE_BAD_PARAMETER; | |
158 | struct acpi_gpe_event_info *gpe_event_info; | |
159 | acpi_cpu_flags flags; | |
160 | ||
161 | ACPI_FUNCTION_TRACE(acpi_disable_gpe); | |
162 | ||
163 | flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); | |
164 | ||
165 | /* Ensure that we have a valid GPE number */ | |
166 | ||
167 | gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number); | |
168 | if (gpe_event_info) { | |
3a37898d | 169 | status = acpi_ev_remove_gpe_reference(gpe_event_info) ; |
3cfd53d5 LM |
170 | } |
171 | ||
172 | acpi_os_release_lock(acpi_gbl_gpe_lock, flags); | |
173 | return_ACPI_STATUS(status); | |
174 | } | |
3e8214e5 | 175 | |
3cfd53d5 LM |
176 | ACPI_EXPORT_SYMBOL(acpi_disable_gpe) |
177 | ||
bba63a29 | 178 | |
3cfd53d5 LM |
179 | /******************************************************************************* |
180 | * | |
3a37898d | 181 | * FUNCTION: acpi_setup_gpe_for_wake |
3cfd53d5 | 182 | * |
bba63a29 LM |
183 | * PARAMETERS: wake_device - Device associated with the GPE (via _PRW) |
184 | * gpe_device - Parent GPE Device. NULL for GPE0/GPE1 | |
185 | * gpe_number - GPE level within the GPE block | |
3cfd53d5 LM |
186 | * |
187 | * RETURN: Status | |
188 | * | |
bba63a29 LM |
189 | * DESCRIPTION: Mark a GPE as having the ability to wake the system. This |
190 | * interface is intended to be used as the host executes the | |
191 | * _PRW methods (Power Resources for Wake) in the system tables. | |
192 | * Each _PRW appears under a Device Object (The wake_device), and | |
193 | * contains the info for the wake GPE associated with the | |
194 | * wake_device. | |
3cfd53d5 LM |
195 | * |
196 | ******************************************************************************/ | |
bba63a29 LM |
197 | acpi_status |
198 | acpi_setup_gpe_for_wake(acpi_handle wake_device, | |
199 | acpi_handle gpe_device, u32 gpe_number) | |
3cfd53d5 | 200 | { |
5816b343 | 201 | acpi_status status; |
3cfd53d5 | 202 | struct acpi_gpe_event_info *gpe_event_info; |
bba63a29 | 203 | struct acpi_namespace_node *device_node; |
5816b343 BM |
204 | struct acpi_gpe_notify_info *notify; |
205 | struct acpi_gpe_notify_info *new_notify; | |
3cfd53d5 LM |
206 | acpi_cpu_flags flags; |
207 | ||
3a37898d | 208 | ACPI_FUNCTION_TRACE(acpi_setup_gpe_for_wake); |
3cfd53d5 | 209 | |
bba63a29 LM |
210 | /* Parameter Validation */ |
211 | ||
212 | if (!wake_device) { | |
213 | /* | |
214 | * By forcing wake_device to be valid, we automatically enable the | |
215 | * implicit notify feature on all hosts. | |
216 | */ | |
217 | return_ACPI_STATUS(AE_BAD_PARAMETER); | |
218 | } | |
219 | ||
5816b343 BM |
220 | /* Handle root object case */ |
221 | ||
222 | if (wake_device == ACPI_ROOT_OBJECT) { | |
223 | device_node = acpi_gbl_root_node; | |
224 | } else { | |
1f86e8c1 LZ |
225 | device_node = |
226 | ACPI_CAST_PTR(struct acpi_namespace_node, wake_device); | |
5816b343 BM |
227 | } |
228 | ||
75c8044f | 229 | /* Validate wake_device is of type Device */ |
5816b343 BM |
230 | |
231 | if (device_node->type != ACPI_TYPE_DEVICE) { | |
232 | return_ACPI_STATUS (AE_BAD_PARAMETER); | |
233 | } | |
234 | ||
235 | /* | |
236 | * Allocate a new notify object up front, in case it is needed. | |
237 | * Memory allocation while holding a spinlock is a big no-no | |
238 | * on some hosts. | |
239 | */ | |
240 | new_notify = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_gpe_notify_info)); | |
241 | if (!new_notify) { | |
242 | return_ACPI_STATUS(AE_NO_MEMORY); | |
243 | } | |
244 | ||
3cfd53d5 LM |
245 | flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); |
246 | ||
247 | /* Ensure that we have a valid GPE number */ | |
248 | ||
249 | gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number); | |
2d559513 | 250 | if (!gpe_event_info) { |
5816b343 | 251 | status = AE_BAD_PARAMETER; |
2d559513 RW |
252 | goto unlock_and_exit; |
253 | } | |
bba63a29 | 254 | |
2d559513 RW |
255 | /* |
256 | * If there is no method or handler for this GPE, then the | |
5816b343 BM |
257 | * wake_device will be notified whenever this GPE fires. This is |
258 | * known as an "implicit notify". Note: The GPE is assumed to be | |
2d559513 RW |
259 | * level-triggered (for windows compatibility). |
260 | */ | |
5816b343 BM |
261 | if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) == |
262 | ACPI_GPE_DISPATCH_NONE) { | |
263 | /* | |
264 | * This is the first device for implicit notify on this GPE. | |
265 | * Just set the flags here, and enter the NOTIFY block below. | |
266 | */ | |
267 | gpe_event_info->flags = | |
268 | (ACPI_GPE_DISPATCH_NOTIFY | ACPI_GPE_LEVEL_TRIGGERED); | |
981858bd RW |
269 | } |
270 | ||
5816b343 BM |
271 | /* |
272 | * If we already have an implicit notify on this GPE, add | |
273 | * this device to the notify list. | |
274 | */ | |
275 | if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) == | |
276 | ACPI_GPE_DISPATCH_NOTIFY) { | |
277 | ||
278 | /* Ensure that the device is not already in the list */ | |
279 | ||
280 | notify = gpe_event_info->dispatch.notify_list; | |
281 | while (notify) { | |
282 | if (notify->device_node == device_node) { | |
283 | status = AE_ALREADY_EXISTS; | |
284 | goto unlock_and_exit; | |
285 | } | |
286 | notify = notify->next; | |
981858bd RW |
287 | } |
288 | ||
5816b343 BM |
289 | /* Add this device to the notify list for this GPE */ |
290 | ||
291 | new_notify->device_node = device_node; | |
292 | new_notify->next = gpe_event_info->dispatch.notify_list; | |
293 | gpe_event_info->dispatch.notify_list = new_notify; | |
294 | new_notify = NULL; | |
3cfd53d5 LM |
295 | } |
296 | ||
5816b343 BM |
297 | /* Mark the GPE as a possible wake event */ |
298 | ||
2d559513 RW |
299 | gpe_event_info->flags |= ACPI_GPE_CAN_WAKE; |
300 | status = AE_OK; | |
301 | ||
5816b343 | 302 | unlock_and_exit: |
3cfd53d5 | 303 | acpi_os_release_lock(acpi_gbl_gpe_lock, flags); |
5816b343 BM |
304 | |
305 | /* Delete the notify object if it was not used above */ | |
306 | ||
307 | if (new_notify) { | |
308 | ACPI_FREE(new_notify); | |
309 | } | |
3cfd53d5 LM |
310 | return_ACPI_STATUS(status); |
311 | } | |
3a37898d | 312 | ACPI_EXPORT_SYMBOL(acpi_setup_gpe_for_wake) |
3cfd53d5 LM |
313 | |
314 | /******************************************************************************* | |
315 | * | |
3a37898d | 316 | * FUNCTION: acpi_set_gpe_wake_mask |
3cfd53d5 LM |
317 | * |
318 | * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1 | |
319 | * gpe_number - GPE level within the GPE block | |
ba494bee | 320 | * action - Enable or Disable |
3cfd53d5 LM |
321 | * |
322 | * RETURN: Status | |
323 | * | |
da503373 LM |
324 | * DESCRIPTION: Set or clear the GPE's wakeup enable mask bit. The GPE must |
325 | * already be marked as a WAKE GPE. | |
3cfd53d5 LM |
326 | * |
327 | ******************************************************************************/ | |
328 | ||
1f86e8c1 LZ |
329 | acpi_status |
330 | acpi_set_gpe_wake_mask(acpi_handle gpe_device, u32 gpe_number, u8 action) | |
3cfd53d5 LM |
331 | { |
332 | acpi_status status = AE_OK; | |
333 | struct acpi_gpe_event_info *gpe_event_info; | |
334 | struct acpi_gpe_register_info *gpe_register_info; | |
335 | acpi_cpu_flags flags; | |
336 | u32 register_bit; | |
337 | ||
3a37898d | 338 | ACPI_FUNCTION_TRACE(acpi_set_gpe_wake_mask); |
3cfd53d5 LM |
339 | |
340 | flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); | |
341 | ||
da503373 LM |
342 | /* |
343 | * Ensure that we have a valid GPE number and that this GPE is in | |
344 | * fact a wake GPE | |
345 | */ | |
3cfd53d5 | 346 | gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number); |
3a37898d | 347 | if (!gpe_event_info) { |
3cfd53d5 LM |
348 | status = AE_BAD_PARAMETER; |
349 | goto unlock_and_exit; | |
350 | } | |
351 | ||
3a37898d LM |
352 | if (!(gpe_event_info->flags & ACPI_GPE_CAN_WAKE)) { |
353 | status = AE_TYPE; | |
354 | goto unlock_and_exit; | |
355 | } | |
356 | ||
3cfd53d5 LM |
357 | gpe_register_info = gpe_event_info->register_info; |
358 | if (!gpe_register_info) { | |
359 | status = AE_NOT_EXIST; | |
360 | goto unlock_and_exit; | |
361 | } | |
362 | ||
1d94e1e8 | 363 | register_bit = acpi_hw_get_gpe_register_bit(gpe_event_info); |
3cfd53d5 LM |
364 | |
365 | /* Perform the action */ | |
366 | ||
367 | switch (action) { | |
368 | case ACPI_GPE_ENABLE: | |
369 | ACPI_SET_BIT(gpe_register_info->enable_for_wake, | |
370 | (u8)register_bit); | |
371 | break; | |
372 | ||
373 | case ACPI_GPE_DISABLE: | |
374 | ACPI_CLEAR_BIT(gpe_register_info->enable_for_wake, | |
375 | (u8)register_bit); | |
376 | break; | |
377 | ||
378 | default: | |
379 | ACPI_ERROR((AE_INFO, "%u, Invalid action", action)); | |
380 | status = AE_BAD_PARAMETER; | |
381 | break; | |
382 | } | |
383 | ||
384 | unlock_and_exit: | |
385 | acpi_os_release_lock(acpi_gbl_gpe_lock, flags); | |
386 | return_ACPI_STATUS(status); | |
387 | } | |
388 | ||
3a37898d | 389 | ACPI_EXPORT_SYMBOL(acpi_set_gpe_wake_mask) |
3cfd53d5 LM |
390 | |
391 | /******************************************************************************* | |
392 | * | |
393 | * FUNCTION: acpi_clear_gpe | |
394 | * | |
395 | * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1 | |
396 | * gpe_number - GPE level within the GPE block | |
397 | * | |
398 | * RETURN: Status | |
399 | * | |
400 | * DESCRIPTION: Clear an ACPI event (general purpose) | |
401 | * | |
402 | ******************************************************************************/ | |
403 | acpi_status acpi_clear_gpe(acpi_handle gpe_device, u32 gpe_number) | |
404 | { | |
405 | acpi_status status = AE_OK; | |
406 | struct acpi_gpe_event_info *gpe_event_info; | |
407 | acpi_cpu_flags flags; | |
408 | ||
409 | ACPI_FUNCTION_TRACE(acpi_clear_gpe); | |
410 | ||
411 | flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); | |
412 | ||
413 | /* Ensure that we have a valid GPE number */ | |
414 | ||
415 | gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number); | |
416 | if (!gpe_event_info) { | |
417 | status = AE_BAD_PARAMETER; | |
418 | goto unlock_and_exit; | |
419 | } | |
420 | ||
421 | status = acpi_hw_clear_gpe(gpe_event_info); | |
422 | ||
423 | unlock_and_exit: | |
424 | acpi_os_release_lock(acpi_gbl_gpe_lock, flags); | |
425 | return_ACPI_STATUS(status); | |
426 | } | |
427 | ||
428 | ACPI_EXPORT_SYMBOL(acpi_clear_gpe) | |
429 | ||
430 | /******************************************************************************* | |
431 | * | |
432 | * FUNCTION: acpi_get_gpe_status | |
433 | * | |
434 | * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1 | |
435 | * gpe_number - GPE level within the GPE block | |
75c8044f LZ |
436 | * event_status - Where the current status of the event |
437 | * will be returned | |
3cfd53d5 LM |
438 | * |
439 | * RETURN: Status | |
440 | * | |
da503373 | 441 | * DESCRIPTION: Get the current status of a GPE (signalled/not_signalled) |
3cfd53d5 LM |
442 | * |
443 | ******************************************************************************/ | |
444 | acpi_status | |
445 | acpi_get_gpe_status(acpi_handle gpe_device, | |
446 | u32 gpe_number, acpi_event_status *event_status) | |
447 | { | |
448 | acpi_status status = AE_OK; | |
449 | struct acpi_gpe_event_info *gpe_event_info; | |
450 | acpi_cpu_flags flags; | |
451 | ||
452 | ACPI_FUNCTION_TRACE(acpi_get_gpe_status); | |
453 | ||
454 | flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); | |
455 | ||
456 | /* Ensure that we have a valid GPE number */ | |
457 | ||
458 | gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number); | |
459 | if (!gpe_event_info) { | |
460 | status = AE_BAD_PARAMETER; | |
461 | goto unlock_and_exit; | |
462 | } | |
463 | ||
464 | /* Obtain status on the requested GPE number */ | |
465 | ||
466 | status = acpi_hw_get_gpe_status(gpe_event_info, event_status); | |
467 | ||
468 | if (gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) | |
469 | *event_status |= ACPI_EVENT_FLAG_HANDLE; | |
470 | ||
471 | unlock_and_exit: | |
472 | acpi_os_release_lock(acpi_gbl_gpe_lock, flags); | |
473 | return_ACPI_STATUS(status); | |
474 | } | |
475 | ||
476 | ACPI_EXPORT_SYMBOL(acpi_get_gpe_status) | |
477 | ||
478 | /****************************************************************************** | |
479 | * | |
480 | * FUNCTION: acpi_disable_all_gpes | |
481 | * | |
482 | * PARAMETERS: None | |
483 | * | |
484 | * RETURN: Status | |
485 | * | |
486 | * DESCRIPTION: Disable and clear all GPEs in all GPE blocks | |
487 | * | |
488 | ******************************************************************************/ | |
489 | ||
490 | acpi_status acpi_disable_all_gpes(void) | |
491 | { | |
492 | acpi_status status; | |
493 | ||
494 | ACPI_FUNCTION_TRACE(acpi_disable_all_gpes); | |
495 | ||
496 | status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); | |
497 | if (ACPI_FAILURE(status)) { | |
498 | return_ACPI_STATUS(status); | |
499 | } | |
500 | ||
501 | status = acpi_hw_disable_all_gpes(); | |
502 | (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); | |
503 | ||
504 | return_ACPI_STATUS(status); | |
505 | } | |
506 | ||
3a37898d LM |
507 | ACPI_EXPORT_SYMBOL(acpi_disable_all_gpes) |
508 | ||
3cfd53d5 LM |
509 | /****************************************************************************** |
510 | * | |
511 | * FUNCTION: acpi_enable_all_runtime_gpes | |
512 | * | |
513 | * PARAMETERS: None | |
514 | * | |
515 | * RETURN: Status | |
516 | * | |
517 | * DESCRIPTION: Enable all "runtime" GPEs, in all GPE blocks | |
518 | * | |
519 | ******************************************************************************/ | |
520 | ||
521 | acpi_status acpi_enable_all_runtime_gpes(void) | |
522 | { | |
523 | acpi_status status; | |
524 | ||
525 | ACPI_FUNCTION_TRACE(acpi_enable_all_runtime_gpes); | |
526 | ||
527 | status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); | |
528 | if (ACPI_FAILURE(status)) { | |
529 | return_ACPI_STATUS(status); | |
530 | } | |
531 | ||
532 | status = acpi_hw_enable_all_runtime_gpes(); | |
533 | (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); | |
534 | ||
535 | return_ACPI_STATUS(status); | |
536 | } | |
537 | ||
3a37898d LM |
538 | ACPI_EXPORT_SYMBOL(acpi_enable_all_runtime_gpes) |
539 | ||
3cfd53d5 LM |
540 | /******************************************************************************* |
541 | * | |
542 | * FUNCTION: acpi_install_gpe_block | |
543 | * | |
544 | * PARAMETERS: gpe_device - Handle to the parent GPE Block Device | |
ba494bee | 545 | * gpe_block_address - Address and space_ID |
3cfd53d5 LM |
546 | * register_count - Number of GPE register pairs in the block |
547 | * interrupt_number - H/W interrupt for the block | |
548 | * | |
549 | * RETURN: Status | |
550 | * | |
da503373 LM |
551 | * DESCRIPTION: Create and Install a block of GPE registers. The GPEs are not |
552 | * enabled here. | |
3cfd53d5 LM |
553 | * |
554 | ******************************************************************************/ | |
555 | acpi_status | |
556 | acpi_install_gpe_block(acpi_handle gpe_device, | |
557 | struct acpi_generic_address *gpe_block_address, | |
558 | u32 register_count, u32 interrupt_number) | |
559 | { | |
3a37898d | 560 | acpi_status status; |
3cfd53d5 LM |
561 | union acpi_operand_object *obj_desc; |
562 | struct acpi_namespace_node *node; | |
563 | struct acpi_gpe_block_info *gpe_block; | |
564 | ||
565 | ACPI_FUNCTION_TRACE(acpi_install_gpe_block); | |
566 | ||
567 | if ((!gpe_device) || (!gpe_block_address) || (!register_count)) { | |
568 | return_ACPI_STATUS(AE_BAD_PARAMETER); | |
569 | } | |
570 | ||
571 | status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); | |
572 | if (ACPI_FAILURE(status)) { | |
68aafc35 | 573 | return_ACPI_STATUS(status); |
3cfd53d5 LM |
574 | } |
575 | ||
576 | node = acpi_ns_validate_handle(gpe_device); | |
577 | if (!node) { | |
578 | status = AE_BAD_PARAMETER; | |
579 | goto unlock_and_exit; | |
580 | } | |
581 | ||
582 | /* | |
583 | * For user-installed GPE Block Devices, the gpe_block_base_number | |
584 | * is always zero | |
585 | */ | |
586 | status = | |
587 | acpi_ev_create_gpe_block(node, gpe_block_address, register_count, 0, | |
588 | interrupt_number, &gpe_block); | |
589 | if (ACPI_FAILURE(status)) { | |
590 | goto unlock_and_exit; | |
591 | } | |
592 | ||
593 | /* Install block in the device_object attached to the node */ | |
594 | ||
595 | obj_desc = acpi_ns_get_attached_object(node); | |
596 | if (!obj_desc) { | |
597 | ||
598 | /* | |
599 | * No object, create a new one (Device nodes do not always have | |
600 | * an attached object) | |
601 | */ | |
602 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_DEVICE); | |
603 | if (!obj_desc) { | |
604 | status = AE_NO_MEMORY; | |
605 | goto unlock_and_exit; | |
606 | } | |
607 | ||
608 | status = | |
609 | acpi_ns_attach_object(node, obj_desc, ACPI_TYPE_DEVICE); | |
610 | ||
611 | /* Remove local reference to the object */ | |
612 | ||
613 | acpi_ut_remove_reference(obj_desc); | |
614 | ||
615 | if (ACPI_FAILURE(status)) { | |
616 | goto unlock_and_exit; | |
617 | } | |
618 | } | |
619 | ||
620 | /* Now install the GPE block in the device_object */ | |
621 | ||
622 | obj_desc->device.gpe_block = gpe_block; | |
623 | ||
624 | unlock_and_exit: | |
625 | (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); | |
626 | return_ACPI_STATUS(status); | |
627 | } | |
628 | ||
629 | ACPI_EXPORT_SYMBOL(acpi_install_gpe_block) | |
630 | ||
631 | /******************************************************************************* | |
632 | * | |
633 | * FUNCTION: acpi_remove_gpe_block | |
634 | * | |
635 | * PARAMETERS: gpe_device - Handle to the parent GPE Block Device | |
636 | * | |
637 | * RETURN: Status | |
638 | * | |
639 | * DESCRIPTION: Remove a previously installed block of GPE registers | |
640 | * | |
641 | ******************************************************************************/ | |
642 | acpi_status acpi_remove_gpe_block(acpi_handle gpe_device) | |
643 | { | |
644 | union acpi_operand_object *obj_desc; | |
645 | acpi_status status; | |
646 | struct acpi_namespace_node *node; | |
647 | ||
648 | ACPI_FUNCTION_TRACE(acpi_remove_gpe_block); | |
649 | ||
650 | if (!gpe_device) { | |
651 | return_ACPI_STATUS(AE_BAD_PARAMETER); | |
652 | } | |
653 | ||
654 | status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); | |
655 | if (ACPI_FAILURE(status)) { | |
68aafc35 | 656 | return_ACPI_STATUS(status); |
3cfd53d5 LM |
657 | } |
658 | ||
659 | node = acpi_ns_validate_handle(gpe_device); | |
660 | if (!node) { | |
661 | status = AE_BAD_PARAMETER; | |
662 | goto unlock_and_exit; | |
663 | } | |
664 | ||
665 | /* Get the device_object attached to the node */ | |
666 | ||
667 | obj_desc = acpi_ns_get_attached_object(node); | |
668 | if (!obj_desc || !obj_desc->device.gpe_block) { | |
669 | return_ACPI_STATUS(AE_NULL_OBJECT); | |
670 | } | |
671 | ||
672 | /* Delete the GPE block (but not the device_object) */ | |
673 | ||
674 | status = acpi_ev_delete_gpe_block(obj_desc->device.gpe_block); | |
675 | if (ACPI_SUCCESS(status)) { | |
676 | obj_desc->device.gpe_block = NULL; | |
677 | } | |
678 | ||
679 | unlock_and_exit: | |
680 | (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); | |
681 | return_ACPI_STATUS(status); | |
682 | } | |
683 | ||
684 | ACPI_EXPORT_SYMBOL(acpi_remove_gpe_block) | |
685 | ||
686 | /******************************************************************************* | |
687 | * | |
688 | * FUNCTION: acpi_get_gpe_device | |
689 | * | |
ba494bee | 690 | * PARAMETERS: index - System GPE index (0-current_gpe_count) |
3cfd53d5 LM |
691 | * gpe_device - Where the parent GPE Device is returned |
692 | * | |
693 | * RETURN: Status | |
694 | * | |
695 | * DESCRIPTION: Obtain the GPE device associated with the input index. A NULL | |
696 | * gpe device indicates that the gpe number is contained in one of | |
697 | * the FADT-defined gpe blocks. Otherwise, the GPE block device. | |
698 | * | |
699 | ******************************************************************************/ | |
1f86e8c1 | 700 | acpi_status acpi_get_gpe_device(u32 index, acpi_handle * gpe_device) |
3cfd53d5 LM |
701 | { |
702 | struct acpi_gpe_device_info info; | |
703 | acpi_status status; | |
704 | ||
705 | ACPI_FUNCTION_TRACE(acpi_get_gpe_device); | |
706 | ||
707 | if (!gpe_device) { | |
708 | return_ACPI_STATUS(AE_BAD_PARAMETER); | |
709 | } | |
710 | ||
711 | if (index >= acpi_current_gpe_count) { | |
712 | return_ACPI_STATUS(AE_NOT_EXIST); | |
713 | } | |
714 | ||
715 | /* Setup and walk the GPE list */ | |
716 | ||
717 | info.index = index; | |
718 | info.status = AE_NOT_EXIST; | |
719 | info.gpe_device = NULL; | |
720 | info.next_block_base_index = 0; | |
721 | ||
722 | status = acpi_ev_walk_gpe_list(acpi_ev_get_gpe_device, &info); | |
723 | if (ACPI_FAILURE(status)) { | |
724 | return_ACPI_STATUS(status); | |
725 | } | |
726 | ||
3a37898d | 727 | *gpe_device = ACPI_CAST_PTR(acpi_handle, info.gpe_device); |
3cfd53d5 LM |
728 | return_ACPI_STATUS(info.status); |
729 | } | |
730 | ||
731 | ACPI_EXPORT_SYMBOL(acpi_get_gpe_device) | |
33620c54 | 732 | #endif /* !ACPI_REDUCED_HARDWARE */ |