Commit | Line | Data |
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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: evgpeblk - GPE block creation and initialization. | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
a8357b0c | 8 | * Copyright (C) 2000 - 2010, Intel Corp. |
1da177e4 LT |
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> | |
e2f7a777 LB |
45 | #include "accommon.h" |
46 | #include "acevents.h" | |
47 | #include "acnamesp.h" | |
1da177e4 LT |
48 | |
49 | #define _COMPONENT ACPI_EVENTS | |
4be44fcd | 50 | ACPI_MODULE_NAME("evgpeblk") |
1da177e4 | 51 | |
44f6c012 | 52 | /* Local prototypes */ |
44f6c012 | 53 | static acpi_status |
4be44fcd LB |
54 | acpi_ev_install_gpe_block(struct acpi_gpe_block_info *gpe_block, |
55 | u32 interrupt_number); | |
44f6c012 RM |
56 | |
57 | static acpi_status | |
4be44fcd | 58 | acpi_ev_create_gpe_info_blocks(struct acpi_gpe_block_info *gpe_block); |
1da177e4 | 59 | |
1da177e4 LT |
60 | /******************************************************************************* |
61 | * | |
62 | * FUNCTION: acpi_ev_install_gpe_block | |
63 | * | |
9f15fc66 BM |
64 | * PARAMETERS: gpe_block - New GPE block |
65 | * interrupt_number - Xrupt to be associated with this | |
66 | * GPE block | |
1da177e4 LT |
67 | * |
68 | * RETURN: Status | |
69 | * | |
70 | * DESCRIPTION: Install new GPE block with mutex support | |
71 | * | |
72 | ******************************************************************************/ | |
73 | ||
74 | static acpi_status | |
4be44fcd LB |
75 | acpi_ev_install_gpe_block(struct acpi_gpe_block_info *gpe_block, |
76 | u32 interrupt_number) | |
1da177e4 | 77 | { |
4be44fcd LB |
78 | struct acpi_gpe_block_info *next_gpe_block; |
79 | struct acpi_gpe_xrupt_info *gpe_xrupt_block; | |
80 | acpi_status status; | |
b8e4d893 | 81 | acpi_cpu_flags flags; |
1da177e4 | 82 | |
b229cf92 | 83 | ACPI_FUNCTION_TRACE(ev_install_gpe_block); |
1da177e4 | 84 | |
4be44fcd LB |
85 | status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); |
86 | if (ACPI_FAILURE(status)) { | |
87 | return_ACPI_STATUS(status); | |
1da177e4 LT |
88 | } |
89 | ||
4be44fcd | 90 | gpe_xrupt_block = acpi_ev_get_gpe_xrupt_block(interrupt_number); |
1da177e4 LT |
91 | if (!gpe_xrupt_block) { |
92 | status = AE_NO_MEMORY; | |
93 | goto unlock_and_exit; | |
94 | } | |
95 | ||
44f6c012 | 96 | /* Install the new block at the end of the list with lock */ |
1da177e4 | 97 | |
4be44fcd | 98 | flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); |
1da177e4 LT |
99 | if (gpe_xrupt_block->gpe_block_list_head) { |
100 | next_gpe_block = gpe_xrupt_block->gpe_block_list_head; | |
101 | while (next_gpe_block->next) { | |
102 | next_gpe_block = next_gpe_block->next; | |
103 | } | |
104 | ||
105 | next_gpe_block->next = gpe_block; | |
106 | gpe_block->previous = next_gpe_block; | |
4be44fcd | 107 | } else { |
1da177e4 LT |
108 | gpe_xrupt_block->gpe_block_list_head = gpe_block; |
109 | } | |
110 | ||
111 | gpe_block->xrupt_block = gpe_xrupt_block; | |
4be44fcd | 112 | acpi_os_release_lock(acpi_gbl_gpe_lock, flags); |
1da177e4 | 113 | |
4be44fcd LB |
114 | unlock_and_exit: |
115 | status = acpi_ut_release_mutex(ACPI_MTX_EVENTS); | |
116 | return_ACPI_STATUS(status); | |
1da177e4 LT |
117 | } |
118 | ||
1da177e4 LT |
119 | /******************************************************************************* |
120 | * | |
121 | * FUNCTION: acpi_ev_delete_gpe_block | |
122 | * | |
9f15fc66 | 123 | * PARAMETERS: gpe_block - Existing GPE block |
1da177e4 LT |
124 | * |
125 | * RETURN: Status | |
126 | * | |
127 | * DESCRIPTION: Remove a GPE block | |
128 | * | |
129 | ******************************************************************************/ | |
130 | ||
4be44fcd | 131 | acpi_status acpi_ev_delete_gpe_block(struct acpi_gpe_block_info *gpe_block) |
1da177e4 | 132 | { |
4be44fcd | 133 | acpi_status status; |
b8e4d893 | 134 | acpi_cpu_flags flags; |
1da177e4 | 135 | |
b229cf92 | 136 | ACPI_FUNCTION_TRACE(ev_install_gpe_block); |
1da177e4 | 137 | |
4be44fcd LB |
138 | status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); |
139 | if (ACPI_FAILURE(status)) { | |
140 | return_ACPI_STATUS(status); | |
1da177e4 LT |
141 | } |
142 | ||
143 | /* Disable all GPEs in this block */ | |
144 | ||
e97d6bf1 BM |
145 | status = |
146 | acpi_hw_disable_gpe_block(gpe_block->xrupt_block, gpe_block, NULL); | |
1da177e4 LT |
147 | |
148 | if (!gpe_block->previous && !gpe_block->next) { | |
52fc0b02 | 149 | |
1da177e4 LT |
150 | /* This is the last gpe_block on this interrupt */ |
151 | ||
4be44fcd LB |
152 | status = acpi_ev_delete_gpe_xrupt(gpe_block->xrupt_block); |
153 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
154 | goto unlock_and_exit; |
155 | } | |
4be44fcd | 156 | } else { |
1da177e4 LT |
157 | /* Remove the block on this interrupt with lock */ |
158 | ||
4be44fcd | 159 | flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); |
1da177e4 LT |
160 | if (gpe_block->previous) { |
161 | gpe_block->previous->next = gpe_block->next; | |
4be44fcd LB |
162 | } else { |
163 | gpe_block->xrupt_block->gpe_block_list_head = | |
164 | gpe_block->next; | |
1da177e4 LT |
165 | } |
166 | ||
167 | if (gpe_block->next) { | |
168 | gpe_block->next->previous = gpe_block->previous; | |
169 | } | |
4be44fcd | 170 | acpi_os_release_lock(acpi_gbl_gpe_lock, flags); |
1da177e4 LT |
171 | } |
172 | ||
0f849d2c | 173 | acpi_current_gpe_count -= gpe_block->gpe_count; |
e97d6bf1 | 174 | |
1da177e4 LT |
175 | /* Free the gpe_block */ |
176 | ||
8313524a BM |
177 | ACPI_FREE(gpe_block->register_info); |
178 | ACPI_FREE(gpe_block->event_info); | |
179 | ACPI_FREE(gpe_block); | |
1da177e4 | 180 | |
4be44fcd LB |
181 | unlock_and_exit: |
182 | status = acpi_ut_release_mutex(ACPI_MTX_EVENTS); | |
183 | return_ACPI_STATUS(status); | |
1da177e4 LT |
184 | } |
185 | ||
1da177e4 LT |
186 | /******************************************************************************* |
187 | * | |
188 | * FUNCTION: acpi_ev_create_gpe_info_blocks | |
189 | * | |
190 | * PARAMETERS: gpe_block - New GPE block | |
191 | * | |
192 | * RETURN: Status | |
193 | * | |
194 | * DESCRIPTION: Create the register_info and event_info blocks for this GPE block | |
195 | * | |
196 | ******************************************************************************/ | |
197 | ||
198 | static acpi_status | |
4be44fcd | 199 | acpi_ev_create_gpe_info_blocks(struct acpi_gpe_block_info *gpe_block) |
1da177e4 | 200 | { |
4be44fcd LB |
201 | struct acpi_gpe_register_info *gpe_register_info = NULL; |
202 | struct acpi_gpe_event_info *gpe_event_info = NULL; | |
203 | struct acpi_gpe_event_info *this_event; | |
204 | struct acpi_gpe_register_info *this_register; | |
67a119f9 BM |
205 | u32 i; |
206 | u32 j; | |
4be44fcd | 207 | acpi_status status; |
1da177e4 | 208 | |
b229cf92 | 209 | ACPI_FUNCTION_TRACE(ev_create_gpe_info_blocks); |
1da177e4 LT |
210 | |
211 | /* Allocate the GPE register information block */ | |
212 | ||
8313524a BM |
213 | gpe_register_info = ACPI_ALLOCATE_ZEROED((acpi_size) gpe_block-> |
214 | register_count * | |
215 | sizeof(struct | |
216 | acpi_gpe_register_info)); | |
1da177e4 | 217 | if (!gpe_register_info) { |
b8e4d893 | 218 | ACPI_ERROR((AE_INFO, |
b229cf92 | 219 | "Could not allocate the GpeRegisterInfo table")); |
4be44fcd | 220 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
221 | } |
222 | ||
223 | /* | |
224 | * Allocate the GPE event_info block. There are eight distinct GPEs | |
96db255c | 225 | * per register. Initialization to zeros is sufficient. |
1da177e4 | 226 | */ |
0f849d2c | 227 | gpe_event_info = ACPI_ALLOCATE_ZEROED((acpi_size) gpe_block->gpe_count * |
8313524a BM |
228 | sizeof(struct |
229 | acpi_gpe_event_info)); | |
1da177e4 | 230 | if (!gpe_event_info) { |
b8e4d893 | 231 | ACPI_ERROR((AE_INFO, |
b229cf92 | 232 | "Could not allocate the GpeEventInfo table")); |
1da177e4 LT |
233 | status = AE_NO_MEMORY; |
234 | goto error_exit; | |
235 | } | |
236 | ||
237 | /* Save the new Info arrays in the GPE block */ | |
238 | ||
239 | gpe_block->register_info = gpe_register_info; | |
4be44fcd | 240 | gpe_block->event_info = gpe_event_info; |
1da177e4 LT |
241 | |
242 | /* | |
96db255c | 243 | * Initialize the GPE Register and Event structures. A goal of these |
9f15fc66 BM |
244 | * tables is to hide the fact that there are two separate GPE register |
245 | * sets in a given GPE hardware block, the status registers occupy the | |
246 | * first half, and the enable registers occupy the second half. | |
1da177e4 LT |
247 | */ |
248 | this_register = gpe_register_info; | |
4be44fcd | 249 | this_event = gpe_event_info; |
1da177e4 LT |
250 | |
251 | for (i = 0; i < gpe_block->register_count; i++) { | |
52fc0b02 | 252 | |
1da177e4 LT |
253 | /* Init the register_info for this GPE register (8 GPEs) */ |
254 | ||
4be44fcd LB |
255 | this_register->base_gpe_number = |
256 | (u8) (gpe_block->block_base_number + | |
257 | (i * ACPI_GPE_REGISTER_WIDTH)); | |
258 | ||
59fa8505 BM |
259 | this_register->status_address.address = |
260 | gpe_block->block_address.address + i; | |
4be44fcd | 261 | |
59fa8505 BM |
262 | this_register->enable_address.address = |
263 | gpe_block->block_address.address + i + | |
264 | gpe_block->register_count; | |
4be44fcd | 265 | |
f3d2e786 BM |
266 | this_register->status_address.space_id = |
267 | gpe_block->block_address.space_id; | |
268 | this_register->enable_address.space_id = | |
269 | gpe_block->block_address.space_id; | |
270 | this_register->status_address.bit_width = | |
4be44fcd | 271 | ACPI_GPE_REGISTER_WIDTH; |
f3d2e786 | 272 | this_register->enable_address.bit_width = |
4be44fcd | 273 | ACPI_GPE_REGISTER_WIDTH; |
ecfbbc7b BM |
274 | this_register->status_address.bit_offset = 0; |
275 | this_register->enable_address.bit_offset = 0; | |
1da177e4 LT |
276 | |
277 | /* Init the event_info for each GPE within this register */ | |
278 | ||
279 | for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++) { | |
69874165 AS |
280 | this_event->gpe_number = |
281 | (u8) (this_register->base_gpe_number + j); | |
1da177e4 LT |
282 | this_event->register_info = this_register; |
283 | this_event++; | |
284 | } | |
285 | ||
96db255c BM |
286 | /* Disable all GPEs within this register */ |
287 | ||
c6b5774c | 288 | status = acpi_hw_write(0x00, &this_register->enable_address); |
4be44fcd | 289 | if (ACPI_FAILURE(status)) { |
1da177e4 LT |
290 | goto error_exit; |
291 | } | |
292 | ||
96db255c BM |
293 | /* Clear any pending GPE events within this register */ |
294 | ||
c6b5774c | 295 | status = acpi_hw_write(0xFF, &this_register->status_address); |
4be44fcd | 296 | if (ACPI_FAILURE(status)) { |
1da177e4 LT |
297 | goto error_exit; |
298 | } | |
299 | ||
300 | this_register++; | |
301 | } | |
302 | ||
4be44fcd | 303 | return_ACPI_STATUS(AE_OK); |
1da177e4 | 304 | |
4be44fcd | 305 | error_exit: |
1da177e4 | 306 | if (gpe_register_info) { |
8313524a | 307 | ACPI_FREE(gpe_register_info); |
1da177e4 LT |
308 | } |
309 | if (gpe_event_info) { | |
8313524a | 310 | ACPI_FREE(gpe_event_info); |
1da177e4 LT |
311 | } |
312 | ||
4be44fcd | 313 | return_ACPI_STATUS(status); |
1da177e4 LT |
314 | } |
315 | ||
1da177e4 LT |
316 | /******************************************************************************* |
317 | * | |
318 | * FUNCTION: acpi_ev_create_gpe_block | |
319 | * | |
320 | * PARAMETERS: gpe_device - Handle to the parent GPE block | |
321 | * gpe_block_address - Address and space_iD | |
322 | * register_count - Number of GPE register pairs in the block | |
323 | * gpe_block_base_number - Starting GPE number for the block | |
6f42ccf2 | 324 | * interrupt_number - H/W interrupt for the block |
1da177e4 LT |
325 | * return_gpe_block - Where the new block descriptor is returned |
326 | * | |
327 | * RETURN: Status | |
328 | * | |
96db255c BM |
329 | * DESCRIPTION: Create and Install a block of GPE registers. All GPEs within |
330 | * the block are disabled at exit. | |
331 | * Note: Assumes namespace is locked. | |
1da177e4 LT |
332 | * |
333 | ******************************************************************************/ | |
334 | ||
335 | acpi_status | |
4be44fcd LB |
336 | acpi_ev_create_gpe_block(struct acpi_namespace_node *gpe_device, |
337 | struct acpi_generic_address *gpe_block_address, | |
338 | u32 register_count, | |
339 | u8 gpe_block_base_number, | |
340 | u32 interrupt_number, | |
341 | struct acpi_gpe_block_info **return_gpe_block) | |
1da177e4 | 342 | { |
4be44fcd | 343 | acpi_status status; |
96db255c | 344 | struct acpi_gpe_block_info *gpe_block; |
186c307f | 345 | struct acpi_gpe_walk_info walk_info; |
1da177e4 | 346 | |
b229cf92 | 347 | ACPI_FUNCTION_TRACE(ev_create_gpe_block); |
1da177e4 LT |
348 | |
349 | if (!register_count) { | |
4be44fcd | 350 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
351 | } |
352 | ||
353 | /* Allocate a new GPE block */ | |
354 | ||
8313524a | 355 | gpe_block = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_gpe_block_info)); |
1da177e4 | 356 | if (!gpe_block) { |
4be44fcd | 357 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
358 | } |
359 | ||
360 | /* Initialize the new GPE block */ | |
361 | ||
96db255c | 362 | gpe_block->node = gpe_device; |
0f849d2c | 363 | gpe_block->gpe_count = (u16)(register_count * ACPI_GPE_REGISTER_WIDTH); |
1da177e4 LT |
364 | gpe_block->register_count = register_count; |
365 | gpe_block->block_base_number = gpe_block_base_number; | |
1da177e4 | 366 | |
4be44fcd LB |
367 | ACPI_MEMCPY(&gpe_block->block_address, gpe_block_address, |
368 | sizeof(struct acpi_generic_address)); | |
1da177e4 | 369 | |
96db255c BM |
370 | /* |
371 | * Create the register_info and event_info sub-structures | |
372 | * Note: disables and clears all GPEs in the block | |
373 | */ | |
4be44fcd LB |
374 | status = acpi_ev_create_gpe_info_blocks(gpe_block); |
375 | if (ACPI_FAILURE(status)) { | |
8313524a | 376 | ACPI_FREE(gpe_block); |
4be44fcd | 377 | return_ACPI_STATUS(status); |
1da177e4 LT |
378 | } |
379 | ||
96db255c | 380 | /* Install the new block in the global lists */ |
1da177e4 | 381 | |
4be44fcd LB |
382 | status = acpi_ev_install_gpe_block(gpe_block, interrupt_number); |
383 | if (ACPI_FAILURE(status)) { | |
8313524a | 384 | ACPI_FREE(gpe_block); |
4be44fcd | 385 | return_ACPI_STATUS(status); |
1da177e4 LT |
386 | } |
387 | ||
186c307f BM |
388 | /* Find all GPE methods (_Lxx or_Exx) for this block */ |
389 | ||
390 | walk_info.gpe_block = gpe_block; | |
391 | walk_info.gpe_device = gpe_device; | |
392 | walk_info.enable_this_gpe = FALSE; | |
393 | walk_info.execute_by_owner_id = FALSE; | |
1da177e4 | 394 | |
4be44fcd LB |
395 | status = acpi_ns_walk_namespace(ACPI_TYPE_METHOD, gpe_device, |
396 | ACPI_UINT32_MAX, ACPI_NS_WALK_NO_UNLOCK, | |
0f849d2c | 397 | acpi_ev_match_gpe_method, NULL, |
186c307f | 398 | &walk_info, NULL); |
1da177e4 | 399 | |
96db255c BM |
400 | /* Return the new block */ |
401 | ||
402 | if (return_gpe_block) { | |
403 | (*return_gpe_block) = gpe_block; | |
404 | } | |
405 | ||
406 | ACPI_DEBUG_PRINT((ACPI_DB_INIT, | |
407 | "GPE %02X to %02X [%4.4s] %u regs on int 0x%X\n", | |
408 | (u32) gpe_block->block_base_number, | |
409 | (u32) (gpe_block->block_base_number + | |
0f849d2c | 410 | (gpe_block->gpe_count - 1)), |
96db255c BM |
411 | gpe_device->name.ascii, gpe_block->register_count, |
412 | interrupt_number)); | |
413 | ||
e97d6bf1 BM |
414 | /* Update global count of currently available GPEs */ |
415 | ||
0f849d2c | 416 | acpi_current_gpe_count += gpe_block->gpe_count; |
96db255c BM |
417 | return_ACPI_STATUS(AE_OK); |
418 | } | |
419 | ||
420 | /******************************************************************************* | |
421 | * | |
422 | * FUNCTION: acpi_ev_initialize_gpe_block | |
423 | * | |
424 | * PARAMETERS: gpe_device - Handle to the parent GPE block | |
425 | * gpe_block - Gpe Block info | |
426 | * | |
427 | * RETURN: Status | |
428 | * | |
429 | * DESCRIPTION: Initialize and enable a GPE block. First find and run any | |
430 | * _PRT methods associated with the block, then enable the | |
431 | * appropriate GPEs. | |
432 | * Note: Assumes namespace is locked. | |
433 | * | |
434 | ******************************************************************************/ | |
435 | ||
436 | acpi_status | |
437 | acpi_ev_initialize_gpe_block(struct acpi_namespace_node *gpe_device, | |
438 | struct acpi_gpe_block_info *gpe_block) | |
439 | { | |
0f849d2c | 440 | acpi_status status; |
96db255c | 441 | struct acpi_gpe_event_info *gpe_event_info; |
96db255c | 442 | u32 gpe_enabled_count; |
0f849d2c LM |
443 | u32 gpe_index; |
444 | u32 gpe_number; | |
67a119f9 BM |
445 | u32 i; |
446 | u32 j; | |
96db255c | 447 | |
b229cf92 | 448 | ACPI_FUNCTION_TRACE(ev_initialize_gpe_block); |
96db255c BM |
449 | |
450 | /* Ignore a null GPE block (e.g., if no GPE block 1 exists) */ | |
451 | ||
452 | if (!gpe_block) { | |
453 | return_ACPI_STATUS(AE_OK); | |
454 | } | |
455 | ||
1da177e4 | 456 | /* |
9874647b RW |
457 | * Enable all GPEs that have a corresponding method. Any other GPEs |
458 | * within this block must be enabled via the acpi_enable_gpe interface. | |
1da177e4 | 459 | */ |
1da177e4 | 460 | gpe_enabled_count = 0; |
0f849d2c LM |
461 | |
462 | if (gpe_device == acpi_gbl_fadt_gpe_device) { | |
9630bdd9 | 463 | gpe_device = NULL; |
0f849d2c | 464 | } |
1da177e4 LT |
465 | |
466 | for (i = 0; i < gpe_block->register_count; i++) { | |
9630bdd9 | 467 | for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++) { |
52fc0b02 | 468 | |
1da177e4 | 469 | /* Get the info block for this particular GPE */ |
0f849d2c LM |
470 | |
471 | gpe_index = (i * ACPI_GPE_REGISTER_WIDTH) + j; | |
9630bdd9 | 472 | gpe_event_info = &gpe_block->event_info[gpe_index]; |
ce43ace0 RW |
473 | gpe_number = gpe_index + gpe_block->block_base_number; |
474 | ||
0f849d2c LM |
475 | /* Ignore GPEs that have no corresponding _Lxx/_Exx method */ |
476 | ||
477 | if (!(gpe_event_info->flags & ACPI_GPE_DISPATCH_METHOD)) { | |
9630bdd9 | 478 | continue; |
0f849d2c LM |
479 | } |
480 | ||
a0d46871 RW |
481 | /* |
482 | * If the GPE has already been enabled for runtime | |
483 | * signaling, make sure it remains enabled, but do not | |
484 | * increment its reference counter. | |
485 | */ | |
486 | status = gpe_event_info->runtime_count ? | |
487 | acpi_ev_enable_gpe(gpe_event_info) : | |
488 | acpi_enable_gpe(gpe_device, gpe_number); | |
9630bdd9 | 489 | |
0f849d2c LM |
490 | if (ACPI_FAILURE(status)) { |
491 | ACPI_EXCEPTION((AE_INFO, status, | |
492 | "Could not enable GPE 0x%02X", | |
9630bdd9 | 493 | gpe_number)); |
0f849d2c LM |
494 | continue; |
495 | } | |
496 | ||
497 | gpe_enabled_count++; | |
1da177e4 LT |
498 | } |
499 | } | |
500 | ||
9874647b | 501 | if (gpe_enabled_count) { |
186c307f | 502 | ACPI_DEBUG_PRINT((ACPI_DB_INIT, |
9874647b RW |
503 | "Enabled %u GPEs in this block\n", |
504 | gpe_enabled_count)); | |
186c307f | 505 | } |
1da177e4 | 506 | |
9630bdd9 | 507 | return_ACPI_STATUS(AE_OK); |
1da177e4 | 508 | } |