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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 | ||
839e928f LZ |
44 | #define EXPORT_ACPI_INTERFACES |
45 | ||
3cfd53d5 LM |
46 | #include <acpi/acpi.h> |
47 | #include "accommon.h" | |
48 | #include "acevents.h" | |
49 | #include "acnamesp.h" | |
50 | ||
51 | #define _COMPONENT ACPI_EVENTS | |
52 | ACPI_MODULE_NAME("evxfgpe") | |
53 | ||
33620c54 | 54 | #if (!ACPI_REDUCED_HARDWARE) /* Entire module */ |
75c8044f | 55 | /******************************************************************************* |
3cfd53d5 | 56 | * |
3a37898d | 57 | * FUNCTION: acpi_update_all_gpes |
3cfd53d5 LM |
58 | * |
59 | * PARAMETERS: None | |
60 | * | |
da503373 LM |
61 | * RETURN: Status |
62 | * | |
63 | * DESCRIPTION: Complete GPE initialization and enable all GPEs that have | |
64 | * associated _Lxx or _Exx methods and are not pointed to by any | |
65 | * device _PRW methods (this indicates that these GPEs are | |
66 | * generally intended for system or device wakeup. Such GPEs | |
67 | * have to be enabled directly when the devices whose _PRW | |
68 | * methods point to them are set up for wakeup signaling.) | |
3cfd53d5 | 69 | * |
da503373 LM |
70 | * NOTE: Should be called after any GPEs are added to the system. Primarily, |
71 | * after the system _PRW methods have been run, but also after a GPE Block | |
72 | * Device has been added or if any new GPE methods have been added via a | |
73 | * dynamic table load. | |
3cfd53d5 LM |
74 | * |
75 | ******************************************************************************/ | |
76 | ||
3a37898d | 77 | acpi_status acpi_update_all_gpes(void) |
3cfd53d5 LM |
78 | { |
79 | acpi_status status; | |
80 | ||
3a37898d | 81 | ACPI_FUNCTION_TRACE(acpi_update_all_gpes); |
3cfd53d5 LM |
82 | |
83 | status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); | |
84 | if (ACPI_FAILURE(status)) { | |
85 | return_ACPI_STATUS(status); | |
3a37898d LM |
86 | } |
87 | ||
88 | if (acpi_gbl_all_gpes_initialized) { | |
89 | goto unlock_and_exit; | |
3cfd53d5 LM |
90 | } |
91 | ||
92 | status = acpi_ev_walk_gpe_list(acpi_ev_initialize_gpe_block, NULL); | |
93 | if (ACPI_SUCCESS(status)) { | |
3a37898d | 94 | acpi_gbl_all_gpes_initialized = TRUE; |
3cfd53d5 LM |
95 | } |
96 | ||
3a37898d | 97 | unlock_and_exit: |
3cfd53d5 LM |
98 | (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); |
99 | ||
100 | return_ACPI_STATUS(status); | |
101 | } | |
102 | ||
3a37898d LM |
103 | ACPI_EXPORT_SYMBOL(acpi_update_all_gpes) |
104 | ||
3cfd53d5 LM |
105 | /******************************************************************************* |
106 | * | |
107 | * FUNCTION: acpi_enable_gpe | |
108 | * | |
109 | * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1 | |
110 | * gpe_number - GPE level within the GPE block | |
111 | * | |
112 | * RETURN: Status | |
113 | * | |
114 | * DESCRIPTION: Add a reference to a GPE. On the first reference, the GPE is | |
115 | * hardware-enabled. | |
116 | * | |
117 | ******************************************************************************/ | |
118 | ||
119 | acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number) | |
120 | { | |
121 | acpi_status status = AE_BAD_PARAMETER; | |
122 | struct acpi_gpe_event_info *gpe_event_info; | |
123 | acpi_cpu_flags flags; | |
124 | ||
125 | ACPI_FUNCTION_TRACE(acpi_enable_gpe); | |
126 | ||
127 | flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); | |
128 | ||
129 | /* Ensure that we have a valid GPE number */ | |
130 | ||
131 | gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number); | |
132 | if (gpe_event_info) { | |
3a37898d | 133 | status = acpi_ev_add_gpe_reference(gpe_event_info); |
3cfd53d5 LM |
134 | } |
135 | ||
136 | acpi_os_release_lock(acpi_gbl_gpe_lock, flags); | |
137 | return_ACPI_STATUS(status); | |
138 | } | |
139 | ACPI_EXPORT_SYMBOL(acpi_enable_gpe) | |
140 | ||
141 | /******************************************************************************* | |
142 | * | |
143 | * FUNCTION: acpi_disable_gpe | |
144 | * | |
145 | * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1 | |
146 | * gpe_number - GPE level within the GPE block | |
147 | * | |
148 | * RETURN: Status | |
149 | * | |
150 | * DESCRIPTION: Remove a reference to a GPE. When the last reference is | |
151 | * removed, only then is the GPE disabled (for runtime GPEs), or | |
152 | * the GPE mask bit disabled (for wake GPEs) | |
153 | * | |
154 | ******************************************************************************/ | |
155 | ||
156 | acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number) | |
157 | { | |
158 | acpi_status status = AE_BAD_PARAMETER; | |
159 | struct acpi_gpe_event_info *gpe_event_info; | |
160 | acpi_cpu_flags flags; | |
161 | ||
162 | ACPI_FUNCTION_TRACE(acpi_disable_gpe); | |
163 | ||
164 | flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); | |
165 | ||
166 | /* Ensure that we have a valid GPE number */ | |
167 | ||
168 | gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number); | |
169 | if (gpe_event_info) { | |
3a37898d | 170 | status = acpi_ev_remove_gpe_reference(gpe_event_info) ; |
3cfd53d5 LM |
171 | } |
172 | ||
173 | acpi_os_release_lock(acpi_gbl_gpe_lock, flags); | |
174 | return_ACPI_STATUS(status); | |
175 | } | |
3e8214e5 | 176 | |
3cfd53d5 LM |
177 | ACPI_EXPORT_SYMBOL(acpi_disable_gpe) |
178 | ||
bba63a29 | 179 | |
3cfd53d5 LM |
180 | /******************************************************************************* |
181 | * | |
3a37898d | 182 | * FUNCTION: acpi_setup_gpe_for_wake |
3cfd53d5 | 183 | * |
bba63a29 LM |
184 | * PARAMETERS: wake_device - Device associated with the GPE (via _PRW) |
185 | * gpe_device - Parent GPE Device. NULL for GPE0/GPE1 | |
186 | * gpe_number - GPE level within the GPE block | |
3cfd53d5 LM |
187 | * |
188 | * RETURN: Status | |
189 | * | |
bba63a29 LM |
190 | * DESCRIPTION: Mark a GPE as having the ability to wake the system. This |
191 | * interface is intended to be used as the host executes the | |
192 | * _PRW methods (Power Resources for Wake) in the system tables. | |
193 | * Each _PRW appears under a Device Object (The wake_device), and | |
194 | * contains the info for the wake GPE associated with the | |
195 | * wake_device. | |
3cfd53d5 LM |
196 | * |
197 | ******************************************************************************/ | |
bba63a29 LM |
198 | acpi_status |
199 | acpi_setup_gpe_for_wake(acpi_handle wake_device, | |
200 | acpi_handle gpe_device, u32 gpe_number) | |
3cfd53d5 | 201 | { |
5816b343 | 202 | acpi_status status; |
3cfd53d5 | 203 | struct acpi_gpe_event_info *gpe_event_info; |
bba63a29 | 204 | struct acpi_namespace_node *device_node; |
5816b343 BM |
205 | struct acpi_gpe_notify_info *notify; |
206 | struct acpi_gpe_notify_info *new_notify; | |
3cfd53d5 LM |
207 | acpi_cpu_flags flags; |
208 | ||
3a37898d | 209 | ACPI_FUNCTION_TRACE(acpi_setup_gpe_for_wake); |
3cfd53d5 | 210 | |
bba63a29 LM |
211 | /* Parameter Validation */ |
212 | ||
213 | if (!wake_device) { | |
214 | /* | |
215 | * By forcing wake_device to be valid, we automatically enable the | |
216 | * implicit notify feature on all hosts. | |
217 | */ | |
218 | return_ACPI_STATUS(AE_BAD_PARAMETER); | |
219 | } | |
220 | ||
5816b343 BM |
221 | /* Handle root object case */ |
222 | ||
223 | if (wake_device == ACPI_ROOT_OBJECT) { | |
224 | device_node = acpi_gbl_root_node; | |
225 | } else { | |
1f86e8c1 LZ |
226 | device_node = |
227 | ACPI_CAST_PTR(struct acpi_namespace_node, wake_device); | |
5816b343 BM |
228 | } |
229 | ||
75c8044f | 230 | /* Validate wake_device is of type Device */ |
5816b343 BM |
231 | |
232 | if (device_node->type != ACPI_TYPE_DEVICE) { | |
233 | return_ACPI_STATUS (AE_BAD_PARAMETER); | |
234 | } | |
235 | ||
236 | /* | |
237 | * Allocate a new notify object up front, in case it is needed. | |
238 | * Memory allocation while holding a spinlock is a big no-no | |
239 | * on some hosts. | |
240 | */ | |
241 | new_notify = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_gpe_notify_info)); | |
242 | if (!new_notify) { | |
243 | return_ACPI_STATUS(AE_NO_MEMORY); | |
244 | } | |
245 | ||
3cfd53d5 LM |
246 | flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); |
247 | ||
248 | /* Ensure that we have a valid GPE number */ | |
249 | ||
250 | gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number); | |
2d559513 | 251 | if (!gpe_event_info) { |
5816b343 | 252 | status = AE_BAD_PARAMETER; |
2d559513 RW |
253 | goto unlock_and_exit; |
254 | } | |
bba63a29 | 255 | |
2d559513 RW |
256 | /* |
257 | * If there is no method or handler for this GPE, then the | |
5816b343 BM |
258 | * wake_device will be notified whenever this GPE fires. This is |
259 | * known as an "implicit notify". Note: The GPE is assumed to be | |
2d559513 RW |
260 | * level-triggered (for windows compatibility). |
261 | */ | |
5816b343 BM |
262 | if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) == |
263 | ACPI_GPE_DISPATCH_NONE) { | |
264 | /* | |
265 | * This is the first device for implicit notify on this GPE. | |
266 | * Just set the flags here, and enter the NOTIFY block below. | |
267 | */ | |
268 | gpe_event_info->flags = | |
269 | (ACPI_GPE_DISPATCH_NOTIFY | ACPI_GPE_LEVEL_TRIGGERED); | |
981858bd RW |
270 | } |
271 | ||
5816b343 BM |
272 | /* |
273 | * If we already have an implicit notify on this GPE, add | |
274 | * this device to the notify list. | |
275 | */ | |
276 | if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) == | |
277 | ACPI_GPE_DISPATCH_NOTIFY) { | |
278 | ||
279 | /* Ensure that the device is not already in the list */ | |
280 | ||
281 | notify = gpe_event_info->dispatch.notify_list; | |
282 | while (notify) { | |
283 | if (notify->device_node == device_node) { | |
284 | status = AE_ALREADY_EXISTS; | |
285 | goto unlock_and_exit; | |
286 | } | |
287 | notify = notify->next; | |
981858bd RW |
288 | } |
289 | ||
5816b343 BM |
290 | /* Add this device to the notify list for this GPE */ |
291 | ||
292 | new_notify->device_node = device_node; | |
293 | new_notify->next = gpe_event_info->dispatch.notify_list; | |
294 | gpe_event_info->dispatch.notify_list = new_notify; | |
295 | new_notify = NULL; | |
3cfd53d5 LM |
296 | } |
297 | ||
5816b343 BM |
298 | /* Mark the GPE as a possible wake event */ |
299 | ||
2d559513 RW |
300 | gpe_event_info->flags |= ACPI_GPE_CAN_WAKE; |
301 | status = AE_OK; | |
302 | ||
5816b343 | 303 | unlock_and_exit: |
3cfd53d5 | 304 | acpi_os_release_lock(acpi_gbl_gpe_lock, flags); |
5816b343 BM |
305 | |
306 | /* Delete the notify object if it was not used above */ | |
307 | ||
308 | if (new_notify) { | |
309 | ACPI_FREE(new_notify); | |
310 | } | |
3cfd53d5 LM |
311 | return_ACPI_STATUS(status); |
312 | } | |
3a37898d | 313 | ACPI_EXPORT_SYMBOL(acpi_setup_gpe_for_wake) |
3cfd53d5 LM |
314 | |
315 | /******************************************************************************* | |
316 | * | |
3a37898d | 317 | * FUNCTION: acpi_set_gpe_wake_mask |
3cfd53d5 LM |
318 | * |
319 | * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1 | |
320 | * gpe_number - GPE level within the GPE block | |
ba494bee | 321 | * action - Enable or Disable |
3cfd53d5 LM |
322 | * |
323 | * RETURN: Status | |
324 | * | |
da503373 LM |
325 | * DESCRIPTION: Set or clear the GPE's wakeup enable mask bit. The GPE must |
326 | * already be marked as a WAKE GPE. | |
3cfd53d5 LM |
327 | * |
328 | ******************************************************************************/ | |
329 | ||
1f86e8c1 LZ |
330 | acpi_status |
331 | acpi_set_gpe_wake_mask(acpi_handle gpe_device, u32 gpe_number, u8 action) | |
3cfd53d5 LM |
332 | { |
333 | acpi_status status = AE_OK; | |
334 | struct acpi_gpe_event_info *gpe_event_info; | |
335 | struct acpi_gpe_register_info *gpe_register_info; | |
336 | acpi_cpu_flags flags; | |
337 | u32 register_bit; | |
338 | ||
3a37898d | 339 | ACPI_FUNCTION_TRACE(acpi_set_gpe_wake_mask); |
3cfd53d5 LM |
340 | |
341 | flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); | |
342 | ||
da503373 LM |
343 | /* |
344 | * Ensure that we have a valid GPE number and that this GPE is in | |
345 | * fact a wake GPE | |
346 | */ | |
3cfd53d5 | 347 | gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number); |
3a37898d | 348 | if (!gpe_event_info) { |
3cfd53d5 LM |
349 | status = AE_BAD_PARAMETER; |
350 | goto unlock_and_exit; | |
351 | } | |
352 | ||
3a37898d LM |
353 | if (!(gpe_event_info->flags & ACPI_GPE_CAN_WAKE)) { |
354 | status = AE_TYPE; | |
355 | goto unlock_and_exit; | |
356 | } | |
357 | ||
3cfd53d5 LM |
358 | gpe_register_info = gpe_event_info->register_info; |
359 | if (!gpe_register_info) { | |
360 | status = AE_NOT_EXIST; | |
361 | goto unlock_and_exit; | |
362 | } | |
363 | ||
1d94e1e8 | 364 | register_bit = acpi_hw_get_gpe_register_bit(gpe_event_info); |
3cfd53d5 LM |
365 | |
366 | /* Perform the action */ | |
367 | ||
368 | switch (action) { | |
369 | case ACPI_GPE_ENABLE: | |
1d1ea1b7 | 370 | |
3cfd53d5 LM |
371 | ACPI_SET_BIT(gpe_register_info->enable_for_wake, |
372 | (u8)register_bit); | |
373 | break; | |
374 | ||
375 | case ACPI_GPE_DISABLE: | |
1d1ea1b7 | 376 | |
3cfd53d5 LM |
377 | ACPI_CLEAR_BIT(gpe_register_info->enable_for_wake, |
378 | (u8)register_bit); | |
379 | break; | |
380 | ||
381 | default: | |
1d1ea1b7 | 382 | |
3cfd53d5 LM |
383 | ACPI_ERROR((AE_INFO, "%u, Invalid action", action)); |
384 | status = AE_BAD_PARAMETER; | |
385 | break; | |
386 | } | |
387 | ||
388 | unlock_and_exit: | |
389 | acpi_os_release_lock(acpi_gbl_gpe_lock, flags); | |
390 | return_ACPI_STATUS(status); | |
391 | } | |
392 | ||
3a37898d | 393 | ACPI_EXPORT_SYMBOL(acpi_set_gpe_wake_mask) |
3cfd53d5 LM |
394 | |
395 | /******************************************************************************* | |
396 | * | |
397 | * FUNCTION: acpi_clear_gpe | |
398 | * | |
399 | * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1 | |
400 | * gpe_number - GPE level within the GPE block | |
401 | * | |
402 | * RETURN: Status | |
403 | * | |
404 | * DESCRIPTION: Clear an ACPI event (general purpose) | |
405 | * | |
406 | ******************************************************************************/ | |
407 | acpi_status acpi_clear_gpe(acpi_handle gpe_device, u32 gpe_number) | |
408 | { | |
409 | acpi_status status = AE_OK; | |
410 | struct acpi_gpe_event_info *gpe_event_info; | |
411 | acpi_cpu_flags flags; | |
412 | ||
413 | ACPI_FUNCTION_TRACE(acpi_clear_gpe); | |
414 | ||
415 | flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); | |
416 | ||
417 | /* Ensure that we have a valid GPE number */ | |
418 | ||
419 | gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number); | |
420 | if (!gpe_event_info) { | |
421 | status = AE_BAD_PARAMETER; | |
422 | goto unlock_and_exit; | |
423 | } | |
424 | ||
425 | status = acpi_hw_clear_gpe(gpe_event_info); | |
426 | ||
427 | unlock_and_exit: | |
428 | acpi_os_release_lock(acpi_gbl_gpe_lock, flags); | |
429 | return_ACPI_STATUS(status); | |
430 | } | |
431 | ||
432 | ACPI_EXPORT_SYMBOL(acpi_clear_gpe) | |
433 | ||
434 | /******************************************************************************* | |
435 | * | |
436 | * FUNCTION: acpi_get_gpe_status | |
437 | * | |
438 | * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1 | |
439 | * gpe_number - GPE level within the GPE block | |
75c8044f LZ |
440 | * event_status - Where the current status of the event |
441 | * will be returned | |
3cfd53d5 LM |
442 | * |
443 | * RETURN: Status | |
444 | * | |
da503373 | 445 | * DESCRIPTION: Get the current status of a GPE (signalled/not_signalled) |
3cfd53d5 LM |
446 | * |
447 | ******************************************************************************/ | |
448 | acpi_status | |
449 | acpi_get_gpe_status(acpi_handle gpe_device, | |
450 | u32 gpe_number, acpi_event_status *event_status) | |
451 | { | |
452 | acpi_status status = AE_OK; | |
453 | struct acpi_gpe_event_info *gpe_event_info; | |
454 | acpi_cpu_flags flags; | |
455 | ||
456 | ACPI_FUNCTION_TRACE(acpi_get_gpe_status); | |
457 | ||
458 | flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); | |
459 | ||
460 | /* Ensure that we have a valid GPE number */ | |
461 | ||
462 | gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number); | |
463 | if (!gpe_event_info) { | |
464 | status = AE_BAD_PARAMETER; | |
465 | goto unlock_and_exit; | |
466 | } | |
467 | ||
468 | /* Obtain status on the requested GPE number */ | |
469 | ||
470 | status = acpi_hw_get_gpe_status(gpe_event_info, event_status); | |
471 | ||
472 | if (gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) | |
473 | *event_status |= ACPI_EVENT_FLAG_HANDLE; | |
474 | ||
10622bf8 | 475 | unlock_and_exit: |
3cfd53d5 LM |
476 | acpi_os_release_lock(acpi_gbl_gpe_lock, flags); |
477 | return_ACPI_STATUS(status); | |
478 | } | |
479 | ||
480 | ACPI_EXPORT_SYMBOL(acpi_get_gpe_status) | |
481 | ||
482 | /****************************************************************************** | |
483 | * | |
484 | * FUNCTION: acpi_disable_all_gpes | |
485 | * | |
486 | * PARAMETERS: None | |
487 | * | |
488 | * RETURN: Status | |
489 | * | |
490 | * DESCRIPTION: Disable and clear all GPEs in all GPE blocks | |
491 | * | |
492 | ******************************************************************************/ | |
493 | ||
494 | acpi_status acpi_disable_all_gpes(void) | |
495 | { | |
496 | acpi_status status; | |
497 | ||
498 | ACPI_FUNCTION_TRACE(acpi_disable_all_gpes); | |
499 | ||
500 | status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); | |
501 | if (ACPI_FAILURE(status)) { | |
502 | return_ACPI_STATUS(status); | |
503 | } | |
504 | ||
505 | status = acpi_hw_disable_all_gpes(); | |
506 | (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); | |
507 | ||
508 | return_ACPI_STATUS(status); | |
509 | } | |
510 | ||
3a37898d LM |
511 | ACPI_EXPORT_SYMBOL(acpi_disable_all_gpes) |
512 | ||
3cfd53d5 LM |
513 | /****************************************************************************** |
514 | * | |
515 | * FUNCTION: acpi_enable_all_runtime_gpes | |
516 | * | |
517 | * PARAMETERS: None | |
518 | * | |
519 | * RETURN: Status | |
520 | * | |
521 | * DESCRIPTION: Enable all "runtime" GPEs, in all GPE blocks | |
522 | * | |
523 | ******************************************************************************/ | |
524 | ||
525 | acpi_status acpi_enable_all_runtime_gpes(void) | |
526 | { | |
527 | acpi_status status; | |
528 | ||
529 | ACPI_FUNCTION_TRACE(acpi_enable_all_runtime_gpes); | |
530 | ||
531 | status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); | |
532 | if (ACPI_FAILURE(status)) { | |
533 | return_ACPI_STATUS(status); | |
534 | } | |
535 | ||
536 | status = acpi_hw_enable_all_runtime_gpes(); | |
537 | (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); | |
538 | ||
539 | return_ACPI_STATUS(status); | |
540 | } | |
541 | ||
3a37898d LM |
542 | ACPI_EXPORT_SYMBOL(acpi_enable_all_runtime_gpes) |
543 | ||
3cfd53d5 LM |
544 | /******************************************************************************* |
545 | * | |
546 | * FUNCTION: acpi_install_gpe_block | |
547 | * | |
548 | * PARAMETERS: gpe_device - Handle to the parent GPE Block Device | |
ba494bee | 549 | * gpe_block_address - Address and space_ID |
3cfd53d5 LM |
550 | * register_count - Number of GPE register pairs in the block |
551 | * interrupt_number - H/W interrupt for the block | |
552 | * | |
553 | * RETURN: Status | |
554 | * | |
da503373 LM |
555 | * DESCRIPTION: Create and Install a block of GPE registers. The GPEs are not |
556 | * enabled here. | |
3cfd53d5 LM |
557 | * |
558 | ******************************************************************************/ | |
559 | acpi_status | |
560 | acpi_install_gpe_block(acpi_handle gpe_device, | |
561 | struct acpi_generic_address *gpe_block_address, | |
562 | u32 register_count, u32 interrupt_number) | |
563 | { | |
3a37898d | 564 | acpi_status status; |
3cfd53d5 LM |
565 | union acpi_operand_object *obj_desc; |
566 | struct acpi_namespace_node *node; | |
567 | struct acpi_gpe_block_info *gpe_block; | |
568 | ||
569 | ACPI_FUNCTION_TRACE(acpi_install_gpe_block); | |
570 | ||
571 | if ((!gpe_device) || (!gpe_block_address) || (!register_count)) { | |
572 | return_ACPI_STATUS(AE_BAD_PARAMETER); | |
573 | } | |
574 | ||
575 | status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); | |
576 | if (ACPI_FAILURE(status)) { | |
68aafc35 | 577 | return_ACPI_STATUS(status); |
3cfd53d5 LM |
578 | } |
579 | ||
580 | node = acpi_ns_validate_handle(gpe_device); | |
581 | if (!node) { | |
582 | status = AE_BAD_PARAMETER; | |
583 | goto unlock_and_exit; | |
584 | } | |
585 | ||
586 | /* | |
587 | * For user-installed GPE Block Devices, the gpe_block_base_number | |
588 | * is always zero | |
589 | */ | |
590 | status = | |
591 | acpi_ev_create_gpe_block(node, gpe_block_address, register_count, 0, | |
592 | interrupt_number, &gpe_block); | |
593 | if (ACPI_FAILURE(status)) { | |
594 | goto unlock_and_exit; | |
595 | } | |
596 | ||
597 | /* Install block in the device_object attached to the node */ | |
598 | ||
599 | obj_desc = acpi_ns_get_attached_object(node); | |
600 | if (!obj_desc) { | |
601 | ||
602 | /* | |
603 | * No object, create a new one (Device nodes do not always have | |
604 | * an attached object) | |
605 | */ | |
606 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_DEVICE); | |
607 | if (!obj_desc) { | |
608 | status = AE_NO_MEMORY; | |
609 | goto unlock_and_exit; | |
610 | } | |
611 | ||
612 | status = | |
613 | acpi_ns_attach_object(node, obj_desc, ACPI_TYPE_DEVICE); | |
614 | ||
615 | /* Remove local reference to the object */ | |
616 | ||
617 | acpi_ut_remove_reference(obj_desc); | |
618 | ||
619 | if (ACPI_FAILURE(status)) { | |
620 | goto unlock_and_exit; | |
621 | } | |
622 | } | |
623 | ||
624 | /* Now install the GPE block in the device_object */ | |
625 | ||
626 | obj_desc->device.gpe_block = gpe_block; | |
627 | ||
10622bf8 | 628 | unlock_and_exit: |
3cfd53d5 LM |
629 | (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); |
630 | return_ACPI_STATUS(status); | |
631 | } | |
632 | ||
633 | ACPI_EXPORT_SYMBOL(acpi_install_gpe_block) | |
634 | ||
635 | /******************************************************************************* | |
636 | * | |
637 | * FUNCTION: acpi_remove_gpe_block | |
638 | * | |
639 | * PARAMETERS: gpe_device - Handle to the parent GPE Block Device | |
640 | * | |
641 | * RETURN: Status | |
642 | * | |
643 | * DESCRIPTION: Remove a previously installed block of GPE registers | |
644 | * | |
645 | ******************************************************************************/ | |
646 | acpi_status acpi_remove_gpe_block(acpi_handle gpe_device) | |
647 | { | |
648 | union acpi_operand_object *obj_desc; | |
649 | acpi_status status; | |
650 | struct acpi_namespace_node *node; | |
651 | ||
652 | ACPI_FUNCTION_TRACE(acpi_remove_gpe_block); | |
653 | ||
654 | if (!gpe_device) { | |
655 | return_ACPI_STATUS(AE_BAD_PARAMETER); | |
656 | } | |
657 | ||
658 | status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); | |
659 | if (ACPI_FAILURE(status)) { | |
68aafc35 | 660 | return_ACPI_STATUS(status); |
3cfd53d5 LM |
661 | } |
662 | ||
663 | node = acpi_ns_validate_handle(gpe_device); | |
664 | if (!node) { | |
665 | status = AE_BAD_PARAMETER; | |
666 | goto unlock_and_exit; | |
667 | } | |
668 | ||
669 | /* Get the device_object attached to the node */ | |
670 | ||
671 | obj_desc = acpi_ns_get_attached_object(node); | |
672 | if (!obj_desc || !obj_desc->device.gpe_block) { | |
673 | return_ACPI_STATUS(AE_NULL_OBJECT); | |
674 | } | |
675 | ||
676 | /* Delete the GPE block (but not the device_object) */ | |
677 | ||
678 | status = acpi_ev_delete_gpe_block(obj_desc->device.gpe_block); | |
679 | if (ACPI_SUCCESS(status)) { | |
680 | obj_desc->device.gpe_block = NULL; | |
681 | } | |
682 | ||
10622bf8 | 683 | unlock_and_exit: |
3cfd53d5 LM |
684 | (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); |
685 | return_ACPI_STATUS(status); | |
686 | } | |
687 | ||
688 | ACPI_EXPORT_SYMBOL(acpi_remove_gpe_block) | |
689 | ||
690 | /******************************************************************************* | |
691 | * | |
692 | * FUNCTION: acpi_get_gpe_device | |
693 | * | |
ba494bee | 694 | * PARAMETERS: index - System GPE index (0-current_gpe_count) |
3cfd53d5 LM |
695 | * gpe_device - Where the parent GPE Device is returned |
696 | * | |
697 | * RETURN: Status | |
698 | * | |
699 | * DESCRIPTION: Obtain the GPE device associated with the input index. A NULL | |
700 | * gpe device indicates that the gpe number is contained in one of | |
701 | * the FADT-defined gpe blocks. Otherwise, the GPE block device. | |
702 | * | |
703 | ******************************************************************************/ | |
1f86e8c1 | 704 | acpi_status acpi_get_gpe_device(u32 index, acpi_handle * gpe_device) |
3cfd53d5 LM |
705 | { |
706 | struct acpi_gpe_device_info info; | |
707 | acpi_status status; | |
708 | ||
709 | ACPI_FUNCTION_TRACE(acpi_get_gpe_device); | |
710 | ||
711 | if (!gpe_device) { | |
712 | return_ACPI_STATUS(AE_BAD_PARAMETER); | |
713 | } | |
714 | ||
715 | if (index >= acpi_current_gpe_count) { | |
716 | return_ACPI_STATUS(AE_NOT_EXIST); | |
717 | } | |
718 | ||
719 | /* Setup and walk the GPE list */ | |
720 | ||
721 | info.index = index; | |
722 | info.status = AE_NOT_EXIST; | |
723 | info.gpe_device = NULL; | |
724 | info.next_block_base_index = 0; | |
725 | ||
726 | status = acpi_ev_walk_gpe_list(acpi_ev_get_gpe_device, &info); | |
727 | if (ACPI_FAILURE(status)) { | |
728 | return_ACPI_STATUS(status); | |
729 | } | |
730 | ||
3a37898d | 731 | *gpe_device = ACPI_CAST_PTR(acpi_handle, info.gpe_device); |
3cfd53d5 LM |
732 | return_ACPI_STATUS(info.status); |
733 | } | |
734 | ||
735 | ACPI_EXPORT_SYMBOL(acpi_get_gpe_device) | |
33620c54 | 736 | #endif /* !ACPI_REDUCED_HARDWARE */ |