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1 | |
2 | /****************************************************************************** | |
3 | * | |
4 | * Name: hwsleep.c - ACPI Hardware Sleep/Wake Interface | |
5 | * | |
6 | *****************************************************************************/ | |
7 | ||
8 | /* | |
9 | * Copyright (C) 2000 - 2005, R. Byron Moore | |
10 | * All rights reserved. | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * 1. Redistributions of source code must retain the above copyright | |
16 | * notice, this list of conditions, and the following disclaimer, | |
17 | * without modification. | |
18 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer | |
19 | * substantially similar to the "NO WARRANTY" disclaimer below | |
20 | * ("Disclaimer") and any redistribution must be conditioned upon | |
21 | * including a substantially similar Disclaimer requirement for further | |
22 | * binary redistribution. | |
23 | * 3. Neither the names of the above-listed copyright holders nor the names | |
24 | * of any contributors may be used to endorse or promote products derived | |
25 | * from this software without specific prior written permission. | |
26 | * | |
27 | * Alternatively, this software may be distributed under the terms of the | |
28 | * GNU General Public License ("GPL") version 2 as published by the Free | |
29 | * Software Foundation. | |
30 | * | |
31 | * NO WARRANTY | |
32 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
33 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
34 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR | |
35 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
36 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
37 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
38 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
39 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
40 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
41 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
42 | * POSSIBILITY OF SUCH DAMAGES. | |
43 | */ | |
44 | ||
45 | #include <linux/module.h> | |
46 | ||
47 | #include <acpi/acpi.h> | |
48 | ||
49 | #define _COMPONENT ACPI_HARDWARE | |
50 | ACPI_MODULE_NAME ("hwsleep") | |
51 | ||
52 | ||
53 | #define METHOD_NAME__BFS "\\_BFS" | |
54 | #define METHOD_NAME__GTS "\\_GTS" | |
55 | #define METHOD_NAME__PTS "\\_PTS" | |
56 | #define METHOD_NAME__SST "\\_SI._SST" | |
57 | #define METHOD_NAME__WAK "\\_WAK" | |
58 | ||
59 | #define ACPI_SST_INDICATOR_OFF 0 | |
60 | #define ACPI_SST_WORKING 1 | |
61 | #define ACPI_SST_WAKING 2 | |
62 | #define ACPI_SST_SLEEPING 3 | |
63 | #define ACPI_SST_SLEEP_CONTEXT 4 | |
64 | ||
65 | ||
66 | /****************************************************************************** | |
67 | * | |
68 | * FUNCTION: acpi_set_firmware_waking_vector | |
69 | * | |
70 | * PARAMETERS: physical_address - Physical address of ACPI real mode | |
71 | * entry point. | |
72 | * | |
73 | * RETURN: Status | |
74 | * | |
75 | * DESCRIPTION: access function for d_firmware_waking_vector field in FACS | |
76 | * | |
77 | ******************************************************************************/ | |
78 | ||
79 | acpi_status | |
80 | acpi_set_firmware_waking_vector ( | |
81 | acpi_physical_address physical_address) | |
82 | { | |
83 | ||
84 | ACPI_FUNCTION_TRACE ("acpi_set_firmware_waking_vector"); | |
85 | ||
86 | ||
87 | /* Set the vector */ | |
88 | ||
89 | if (acpi_gbl_common_fACS.vector_width == 32) { | |
90 | *(ACPI_CAST_PTR (u32, acpi_gbl_common_fACS.firmware_waking_vector)) | |
91 | = (u32) physical_address; | |
92 | } | |
93 | else { | |
94 | *acpi_gbl_common_fACS.firmware_waking_vector | |
95 | = physical_address; | |
96 | } | |
97 | ||
98 | return_ACPI_STATUS (AE_OK); | |
99 | } | |
100 | ||
101 | ||
102 | /****************************************************************************** | |
103 | * | |
104 | * FUNCTION: acpi_get_firmware_waking_vector | |
105 | * | |
106 | * PARAMETERS: *physical_address - Output buffer where contents of | |
107 | * the firmware_waking_vector field of | |
108 | * the FACS will be stored. | |
109 | * | |
110 | * RETURN: Status | |
111 | * | |
112 | * DESCRIPTION: Access function for firmware_waking_vector field in FACS | |
113 | * | |
114 | ******************************************************************************/ | |
115 | #ifdef ACPI_FUTURE_USAGE | |
116 | acpi_status | |
117 | acpi_get_firmware_waking_vector ( | |
118 | acpi_physical_address *physical_address) | |
119 | { | |
120 | ||
121 | ACPI_FUNCTION_TRACE ("acpi_get_firmware_waking_vector"); | |
122 | ||
123 | ||
124 | if (!physical_address) { | |
125 | return_ACPI_STATUS (AE_BAD_PARAMETER); | |
126 | } | |
127 | ||
128 | /* Get the vector */ | |
129 | ||
130 | if (acpi_gbl_common_fACS.vector_width == 32) { | |
131 | *physical_address = (acpi_physical_address) | |
132 | *(ACPI_CAST_PTR (u32, acpi_gbl_common_fACS.firmware_waking_vector)); | |
133 | } | |
134 | else { | |
135 | *physical_address = | |
136 | *acpi_gbl_common_fACS.firmware_waking_vector; | |
137 | } | |
138 | ||
139 | return_ACPI_STATUS (AE_OK); | |
140 | } | |
141 | #endif | |
142 | ||
143 | ||
144 | /****************************************************************************** | |
145 | * | |
146 | * FUNCTION: acpi_enter_sleep_state_prep | |
147 | * | |
148 | * PARAMETERS: sleep_state - Which sleep state to enter | |
149 | * | |
150 | * RETURN: Status | |
151 | * | |
152 | * DESCRIPTION: Prepare to enter a system sleep state (see ACPI 2.0 spec p 231) | |
153 | * This function must execute with interrupts enabled. | |
154 | * We break sleeping into 2 stages so that OSPM can handle | |
155 | * various OS-specific tasks between the two steps. | |
156 | * | |
157 | ******************************************************************************/ | |
158 | ||
159 | acpi_status | |
160 | acpi_enter_sleep_state_prep ( | |
161 | u8 sleep_state) | |
162 | { | |
163 | acpi_status status; | |
164 | struct acpi_object_list arg_list; | |
165 | union acpi_object arg; | |
166 | ||
167 | ||
168 | ACPI_FUNCTION_TRACE ("acpi_enter_sleep_state_prep"); | |
169 | ||
170 | ||
171 | /* | |
172 | * _PSW methods could be run here to enable wake-on keyboard, LAN, etc. | |
173 | */ | |
174 | status = acpi_get_sleep_type_data (sleep_state, | |
175 | &acpi_gbl_sleep_type_a, &acpi_gbl_sleep_type_b); | |
176 | if (ACPI_FAILURE (status)) { | |
177 | return_ACPI_STATUS (status); | |
178 | } | |
179 | ||
180 | /* Setup parameter object */ | |
181 | ||
182 | arg_list.count = 1; | |
183 | arg_list.pointer = &arg; | |
184 | ||
185 | arg.type = ACPI_TYPE_INTEGER; | |
186 | arg.integer.value = sleep_state; | |
187 | ||
188 | /* Run the _PTS and _GTS methods */ | |
189 | ||
190 | status = acpi_evaluate_object (NULL, METHOD_NAME__PTS, &arg_list, NULL); | |
191 | if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) { | |
192 | return_ACPI_STATUS (status); | |
193 | } | |
194 | ||
195 | status = acpi_evaluate_object (NULL, METHOD_NAME__GTS, &arg_list, NULL); | |
196 | if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) { | |
197 | return_ACPI_STATUS (status); | |
198 | } | |
199 | ||
200 | /* Setup the argument to _SST */ | |
201 | ||
202 | switch (sleep_state) { | |
203 | case ACPI_STATE_S0: | |
204 | arg.integer.value = ACPI_SST_WORKING; | |
205 | break; | |
206 | ||
207 | case ACPI_STATE_S1: | |
208 | case ACPI_STATE_S2: | |
209 | case ACPI_STATE_S3: | |
210 | arg.integer.value = ACPI_SST_SLEEPING; | |
211 | break; | |
212 | ||
213 | case ACPI_STATE_S4: | |
214 | arg.integer.value = ACPI_SST_SLEEP_CONTEXT; | |
215 | break; | |
216 | ||
217 | default: | |
218 | arg.integer.value = ACPI_SST_INDICATOR_OFF; /* Default is indicator off */ | |
219 | break; | |
220 | } | |
221 | ||
222 | /* Set the system indicators to show the desired sleep state. */ | |
223 | ||
224 | status = acpi_evaluate_object (NULL, METHOD_NAME__SST, &arg_list, NULL); | |
225 | if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) { | |
226 | ACPI_REPORT_ERROR (("Method _SST failed, %s\n", acpi_format_exception (status))); | |
227 | } | |
228 | ||
229 | return_ACPI_STATUS (AE_OK); | |
230 | } | |
231 | ||
232 | ||
233 | /****************************************************************************** | |
234 | * | |
235 | * FUNCTION: acpi_enter_sleep_state | |
236 | * | |
237 | * PARAMETERS: sleep_state - Which sleep state to enter | |
238 | * | |
239 | * RETURN: Status | |
240 | * | |
241 | * DESCRIPTION: Enter a system sleep state (see ACPI 2.0 spec p 231) | |
242 | * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED | |
243 | * | |
244 | ******************************************************************************/ | |
245 | ||
246 | acpi_status asmlinkage | |
247 | acpi_enter_sleep_state ( | |
248 | u8 sleep_state) | |
249 | { | |
250 | u32 PM1Acontrol; | |
251 | u32 PM1Bcontrol; | |
252 | struct acpi_bit_register_info *sleep_type_reg_info; | |
253 | struct acpi_bit_register_info *sleep_enable_reg_info; | |
254 | u32 in_value; | |
255 | acpi_status status; | |
256 | ||
257 | ||
258 | ACPI_FUNCTION_TRACE ("acpi_enter_sleep_state"); | |
259 | ||
260 | ||
261 | if ((acpi_gbl_sleep_type_a > ACPI_SLEEP_TYPE_MAX) || | |
262 | (acpi_gbl_sleep_type_b > ACPI_SLEEP_TYPE_MAX)) { | |
263 | ACPI_REPORT_ERROR (("Sleep values out of range: A=%X B=%X\n", | |
264 | acpi_gbl_sleep_type_a, acpi_gbl_sleep_type_b)); | |
265 | return_ACPI_STATUS (AE_AML_OPERAND_VALUE); | |
266 | } | |
267 | ||
268 | sleep_type_reg_info = acpi_hw_get_bit_register_info (ACPI_BITREG_SLEEP_TYPE_A); | |
269 | sleep_enable_reg_info = acpi_hw_get_bit_register_info (ACPI_BITREG_SLEEP_ENABLE); | |
270 | ||
271 | /* Clear wake status */ | |
272 | ||
273 | status = acpi_set_register (ACPI_BITREG_WAKE_STATUS, 1, ACPI_MTX_DO_NOT_LOCK); | |
274 | if (ACPI_FAILURE (status)) { | |
275 | return_ACPI_STATUS (status); | |
276 | } | |
277 | ||
278 | /* Clear all fixed and general purpose status bits */ | |
279 | ||
280 | status = acpi_hw_clear_acpi_status (ACPI_MTX_DO_NOT_LOCK); | |
281 | if (ACPI_FAILURE (status)) { | |
282 | return_ACPI_STATUS (status); | |
283 | } | |
284 | ||
285 | /* | |
286 | * 1) Disable/Clear all GPEs | |
287 | * 2) Enable all wakeup GPEs | |
288 | */ | |
289 | status = acpi_hw_disable_all_gpes (ACPI_ISR); | |
290 | if (ACPI_FAILURE (status)) { | |
291 | return_ACPI_STATUS (status); | |
292 | } | |
293 | acpi_gbl_system_awake_and_running = FALSE; | |
294 | ||
295 | status = acpi_hw_enable_all_wakeup_gpes (ACPI_ISR); | |
296 | if (ACPI_FAILURE (status)) { | |
297 | return_ACPI_STATUS (status); | |
298 | } | |
299 | ||
300 | /* Get current value of PM1A control */ | |
301 | ||
302 | status = acpi_hw_register_read (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1_CONTROL, &PM1Acontrol); | |
303 | if (ACPI_FAILURE (status)) { | |
304 | return_ACPI_STATUS (status); | |
305 | } | |
306 | ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "Entering sleep state [S%d]\n", sleep_state)); | |
307 | ||
308 | /* Clear SLP_EN and SLP_TYP fields */ | |
309 | ||
310 | PM1Acontrol &= ~(sleep_type_reg_info->access_bit_mask | sleep_enable_reg_info->access_bit_mask); | |
311 | PM1Bcontrol = PM1Acontrol; | |
312 | ||
313 | /* Insert SLP_TYP bits */ | |
314 | ||
315 | PM1Acontrol |= (acpi_gbl_sleep_type_a << sleep_type_reg_info->bit_position); | |
316 | PM1Bcontrol |= (acpi_gbl_sleep_type_b << sleep_type_reg_info->bit_position); | |
317 | ||
318 | /* | |
319 | * We split the writes of SLP_TYP and SLP_EN to workaround | |
320 | * poorly implemented hardware. | |
321 | */ | |
322 | ||
323 | /* Write #1: fill in SLP_TYP data */ | |
324 | ||
325 | status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1A_CONTROL, PM1Acontrol); | |
326 | if (ACPI_FAILURE (status)) { | |
327 | return_ACPI_STATUS (status); | |
328 | } | |
329 | ||
330 | status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1B_CONTROL, PM1Bcontrol); | |
331 | if (ACPI_FAILURE (status)) { | |
332 | return_ACPI_STATUS (status); | |
333 | } | |
334 | ||
335 | /* Insert SLP_ENABLE bit */ | |
336 | ||
337 | PM1Acontrol |= sleep_enable_reg_info->access_bit_mask; | |
338 | PM1Bcontrol |= sleep_enable_reg_info->access_bit_mask; | |
339 | ||
340 | /* Write #2: SLP_TYP + SLP_EN */ | |
341 | ||
342 | ACPI_FLUSH_CPU_CACHE (); | |
343 | ||
344 | status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1A_CONTROL, PM1Acontrol); | |
345 | if (ACPI_FAILURE (status)) { | |
346 | return_ACPI_STATUS (status); | |
347 | } | |
348 | ||
349 | status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1B_CONTROL, PM1Bcontrol); | |
350 | if (ACPI_FAILURE (status)) { | |
351 | return_ACPI_STATUS (status); | |
352 | } | |
353 | ||
354 | if (sleep_state > ACPI_STATE_S3) { | |
355 | /* | |
356 | * We wanted to sleep > S3, but it didn't happen (by virtue of the fact that | |
357 | * we are still executing!) | |
358 | * | |
359 | * Wait ten seconds, then try again. This is to get S4/S5 to work on all machines. | |
360 | * | |
361 | * We wait so long to allow chipsets that poll this reg very slowly to | |
362 | * still read the right value. Ideally, this block would go | |
363 | * away entirely. | |
364 | */ | |
365 | acpi_os_stall (10000000); | |
366 | ||
367 | status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1_CONTROL, | |
368 | sleep_enable_reg_info->access_bit_mask); | |
369 | if (ACPI_FAILURE (status)) { | |
370 | return_ACPI_STATUS (status); | |
371 | } | |
372 | } | |
373 | ||
374 | /* Wait until we enter sleep state */ | |
375 | ||
376 | do { | |
377 | status = acpi_get_register (ACPI_BITREG_WAKE_STATUS, &in_value, ACPI_MTX_DO_NOT_LOCK); | |
378 | if (ACPI_FAILURE (status)) { | |
379 | return_ACPI_STATUS (status); | |
380 | } | |
381 | ||
382 | /* Spin until we wake */ | |
383 | ||
384 | } while (!in_value); | |
385 | ||
386 | return_ACPI_STATUS (AE_OK); | |
387 | } | |
388 | EXPORT_SYMBOL(acpi_enter_sleep_state); | |
389 | ||
390 | ||
391 | /****************************************************************************** | |
392 | * | |
393 | * FUNCTION: acpi_enter_sleep_state_s4bios | |
394 | * | |
395 | * PARAMETERS: None | |
396 | * | |
397 | * RETURN: Status | |
398 | * | |
399 | * DESCRIPTION: Perform a S4 bios request. | |
400 | * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED | |
401 | * | |
402 | ******************************************************************************/ | |
403 | ||
404 | acpi_status asmlinkage | |
405 | acpi_enter_sleep_state_s4bios ( | |
406 | void) | |
407 | { | |
408 | u32 in_value; | |
409 | acpi_status status; | |
410 | ||
411 | ||
412 | ACPI_FUNCTION_TRACE ("acpi_enter_sleep_state_s4bios"); | |
413 | ||
414 | ||
415 | status = acpi_set_register (ACPI_BITREG_WAKE_STATUS, 1, ACPI_MTX_DO_NOT_LOCK); | |
416 | if (ACPI_FAILURE (status)) { | |
417 | return_ACPI_STATUS (status); | |
418 | } | |
419 | ||
420 | status = acpi_hw_clear_acpi_status (ACPI_MTX_DO_NOT_LOCK); | |
421 | if (ACPI_FAILURE (status)) { | |
422 | return_ACPI_STATUS (status); | |
423 | } | |
424 | ||
425 | /* | |
426 | * 1) Disable/Clear all GPEs | |
427 | * 2) Enable all wakeup GPEs | |
428 | */ | |
429 | status = acpi_hw_disable_all_gpes (ACPI_ISR); | |
430 | if (ACPI_FAILURE (status)) { | |
431 | return_ACPI_STATUS (status); | |
432 | } | |
433 | acpi_gbl_system_awake_and_running = FALSE; | |
434 | ||
435 | status = acpi_hw_enable_all_wakeup_gpes (ACPI_ISR); | |
436 | if (ACPI_FAILURE (status)) { | |
437 | return_ACPI_STATUS (status); | |
438 | } | |
439 | ||
440 | ACPI_FLUSH_CPU_CACHE (); | |
441 | ||
442 | status = acpi_os_write_port (acpi_gbl_FADT->smi_cmd, (u32) acpi_gbl_FADT->S4bios_req, 8); | |
443 | ||
444 | do { | |
445 | acpi_os_stall(1000); | |
446 | status = acpi_get_register (ACPI_BITREG_WAKE_STATUS, &in_value, ACPI_MTX_DO_NOT_LOCK); | |
447 | if (ACPI_FAILURE (status)) { | |
448 | return_ACPI_STATUS (status); | |
449 | } | |
450 | } while (!in_value); | |
451 | ||
452 | return_ACPI_STATUS (AE_OK); | |
453 | } | |
454 | EXPORT_SYMBOL(acpi_enter_sleep_state_s4bios); | |
455 | ||
456 | ||
457 | /****************************************************************************** | |
458 | * | |
459 | * FUNCTION: acpi_leave_sleep_state | |
460 | * | |
461 | * PARAMETERS: sleep_state - Which sleep state we just exited | |
462 | * | |
463 | * RETURN: Status | |
464 | * | |
465 | * DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep | |
466 | * Called with interrupts ENABLED. | |
467 | * | |
468 | ******************************************************************************/ | |
469 | ||
470 | acpi_status | |
471 | acpi_leave_sleep_state ( | |
472 | u8 sleep_state) | |
473 | { | |
474 | struct acpi_object_list arg_list; | |
475 | union acpi_object arg; | |
476 | acpi_status status; | |
477 | struct acpi_bit_register_info *sleep_type_reg_info; | |
478 | struct acpi_bit_register_info *sleep_enable_reg_info; | |
479 | u32 PM1Acontrol; | |
480 | u32 PM1Bcontrol; | |
481 | ||
482 | ||
483 | ACPI_FUNCTION_TRACE ("acpi_leave_sleep_state"); | |
484 | ||
485 | ||
486 | /* | |
487 | * Set SLP_TYPE and SLP_EN to state S0. | |
488 | * This is unclear from the ACPI Spec, but it is required | |
489 | * by some machines. | |
490 | */ | |
491 | status = acpi_get_sleep_type_data (ACPI_STATE_S0, | |
492 | &acpi_gbl_sleep_type_a, &acpi_gbl_sleep_type_b); | |
493 | if (ACPI_SUCCESS (status)) { | |
494 | sleep_type_reg_info = acpi_hw_get_bit_register_info (ACPI_BITREG_SLEEP_TYPE_A); | |
495 | sleep_enable_reg_info = acpi_hw_get_bit_register_info (ACPI_BITREG_SLEEP_ENABLE); | |
496 | ||
497 | /* Get current value of PM1A control */ | |
498 | ||
499 | status = acpi_hw_register_read (ACPI_MTX_DO_NOT_LOCK, | |
500 | ACPI_REGISTER_PM1_CONTROL, &PM1Acontrol); | |
501 | if (ACPI_SUCCESS (status)) { | |
502 | /* Clear SLP_EN and SLP_TYP fields */ | |
503 | ||
504 | PM1Acontrol &= ~(sleep_type_reg_info->access_bit_mask | | |
505 | sleep_enable_reg_info->access_bit_mask); | |
506 | PM1Bcontrol = PM1Acontrol; | |
507 | ||
508 | /* Insert SLP_TYP bits */ | |
509 | ||
510 | PM1Acontrol |= (acpi_gbl_sleep_type_a << sleep_type_reg_info->bit_position); | |
511 | PM1Bcontrol |= (acpi_gbl_sleep_type_b << sleep_type_reg_info->bit_position); | |
512 | ||
513 | /* Just ignore any errors */ | |
514 | ||
515 | (void) acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, | |
516 | ACPI_REGISTER_PM1A_CONTROL, PM1Acontrol); | |
517 | (void) acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, | |
518 | ACPI_REGISTER_PM1B_CONTROL, PM1Bcontrol); | |
519 | } | |
520 | } | |
521 | ||
522 | /* Ensure enter_sleep_state_prep -> enter_sleep_state ordering */ | |
523 | ||
524 | acpi_gbl_sleep_type_a = ACPI_SLEEP_TYPE_INVALID; | |
525 | ||
526 | /* Setup parameter object */ | |
527 | ||
528 | arg_list.count = 1; | |
529 | arg_list.pointer = &arg; | |
530 | arg.type = ACPI_TYPE_INTEGER; | |
531 | ||
532 | /* Ignore any errors from these methods */ | |
533 | ||
534 | arg.integer.value = ACPI_SST_WAKING; | |
535 | status = acpi_evaluate_object (NULL, METHOD_NAME__SST, &arg_list, NULL); | |
536 | if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) { | |
537 | ACPI_REPORT_ERROR (("Method _SST failed, %s\n", acpi_format_exception (status))); | |
538 | } | |
539 | ||
540 | arg.integer.value = sleep_state; | |
541 | status = acpi_evaluate_object (NULL, METHOD_NAME__BFS, &arg_list, NULL); | |
542 | if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) { | |
543 | ACPI_REPORT_ERROR (("Method _BFS failed, %s\n", acpi_format_exception (status))); | |
544 | } | |
545 | ||
546 | status = acpi_evaluate_object (NULL, METHOD_NAME__WAK, &arg_list, NULL); | |
547 | if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) { | |
548 | ACPI_REPORT_ERROR (("Method _WAK failed, %s\n", acpi_format_exception (status))); | |
549 | } | |
550 | /* TBD: _WAK "sometimes" returns stuff - do we want to look at it? */ | |
551 | ||
552 | /* | |
553 | * Restore the GPEs: | |
554 | * 1) Disable/Clear all GPEs | |
555 | * 2) Enable all runtime GPEs | |
556 | */ | |
557 | status = acpi_hw_disable_all_gpes (ACPI_NOT_ISR); | |
558 | if (ACPI_FAILURE (status)) { | |
559 | return_ACPI_STATUS (status); | |
560 | } | |
561 | acpi_gbl_system_awake_and_running = TRUE; | |
562 | ||
563 | status = acpi_hw_enable_all_runtime_gpes (ACPI_NOT_ISR); | |
564 | if (ACPI_FAILURE (status)) { | |
565 | return_ACPI_STATUS (status); | |
566 | } | |
567 | ||
568 | /* Enable power button */ | |
569 | ||
570 | (void) acpi_set_register(acpi_gbl_fixed_event_info[ACPI_EVENT_POWER_BUTTON].enable_register_id, | |
571 | 1, ACPI_MTX_DO_NOT_LOCK); | |
572 | (void) acpi_set_register(acpi_gbl_fixed_event_info[ACPI_EVENT_POWER_BUTTON].status_register_id, | |
573 | 1, ACPI_MTX_DO_NOT_LOCK); | |
574 | ||
575 | arg.integer.value = ACPI_SST_WORKING; | |
576 | status = acpi_evaluate_object (NULL, METHOD_NAME__SST, &arg_list, NULL); | |
577 | if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) { | |
578 | ACPI_REPORT_ERROR (("Method _SST failed, %s\n", acpi_format_exception (status))); | |
579 | } | |
580 | ||
581 | return_ACPI_STATUS (status); | |
582 | } |