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1da177e4 LT |
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> | |
1da177e4 LT |
46 | #include <acpi/acpi.h> |
47 | ||
48 | #define _COMPONENT ACPI_HARDWARE | |
49 | ACPI_MODULE_NAME ("hwsleep") | |
50 | ||
51 | ||
44f6c012 | 52 | /******************************************************************************* |
1da177e4 LT |
53 | * |
54 | * FUNCTION: acpi_set_firmware_waking_vector | |
55 | * | |
56 | * PARAMETERS: physical_address - Physical address of ACPI real mode | |
57 | * entry point. | |
58 | * | |
59 | * RETURN: Status | |
60 | * | |
44f6c012 | 61 | * DESCRIPTION: Access function for the firmware_waking_vector field in FACS |
1da177e4 LT |
62 | * |
63 | ******************************************************************************/ | |
64 | ||
65 | acpi_status | |
66 | acpi_set_firmware_waking_vector ( | |
67 | acpi_physical_address physical_address) | |
68 | { | |
69 | ||
70 | ACPI_FUNCTION_TRACE ("acpi_set_firmware_waking_vector"); | |
71 | ||
72 | ||
73 | /* Set the vector */ | |
74 | ||
75 | if (acpi_gbl_common_fACS.vector_width == 32) { | |
76 | *(ACPI_CAST_PTR (u32, acpi_gbl_common_fACS.firmware_waking_vector)) | |
77 | = (u32) physical_address; | |
78 | } | |
79 | else { | |
80 | *acpi_gbl_common_fACS.firmware_waking_vector | |
81 | = physical_address; | |
82 | } | |
83 | ||
84 | return_ACPI_STATUS (AE_OK); | |
85 | } | |
86 | ||
87 | ||
44f6c012 | 88 | /******************************************************************************* |
1da177e4 LT |
89 | * |
90 | * FUNCTION: acpi_get_firmware_waking_vector | |
91 | * | |
44f6c012 | 92 | * PARAMETERS: *physical_address - Where the contents of |
1da177e4 | 93 | * the firmware_waking_vector field of |
44f6c012 | 94 | * the FACS will be returned. |
1da177e4 | 95 | * |
44f6c012 | 96 | * RETURN: Status, vector |
1da177e4 | 97 | * |
44f6c012 | 98 | * DESCRIPTION: Access function for the firmware_waking_vector field in FACS |
1da177e4 LT |
99 | * |
100 | ******************************************************************************/ | |
44f6c012 | 101 | |
1da177e4 LT |
102 | #ifdef ACPI_FUTURE_USAGE |
103 | acpi_status | |
104 | acpi_get_firmware_waking_vector ( | |
105 | acpi_physical_address *physical_address) | |
106 | { | |
107 | ||
108 | ACPI_FUNCTION_TRACE ("acpi_get_firmware_waking_vector"); | |
109 | ||
110 | ||
111 | if (!physical_address) { | |
112 | return_ACPI_STATUS (AE_BAD_PARAMETER); | |
113 | } | |
114 | ||
115 | /* Get the vector */ | |
116 | ||
117 | if (acpi_gbl_common_fACS.vector_width == 32) { | |
118 | *physical_address = (acpi_physical_address) | |
119 | *(ACPI_CAST_PTR (u32, acpi_gbl_common_fACS.firmware_waking_vector)); | |
120 | } | |
121 | else { | |
122 | *physical_address = | |
123 | *acpi_gbl_common_fACS.firmware_waking_vector; | |
124 | } | |
125 | ||
126 | return_ACPI_STATUS (AE_OK); | |
127 | } | |
128 | #endif | |
129 | ||
130 | ||
44f6c012 | 131 | /******************************************************************************* |
1da177e4 LT |
132 | * |
133 | * FUNCTION: acpi_enter_sleep_state_prep | |
134 | * | |
135 | * PARAMETERS: sleep_state - Which sleep state to enter | |
136 | * | |
137 | * RETURN: Status | |
138 | * | |
139 | * DESCRIPTION: Prepare to enter a system sleep state (see ACPI 2.0 spec p 231) | |
140 | * This function must execute with interrupts enabled. | |
141 | * We break sleeping into 2 stages so that OSPM can handle | |
142 | * various OS-specific tasks between the two steps. | |
143 | * | |
144 | ******************************************************************************/ | |
145 | ||
146 | acpi_status | |
147 | acpi_enter_sleep_state_prep ( | |
148 | u8 sleep_state) | |
149 | { | |
150 | acpi_status status; | |
151 | struct acpi_object_list arg_list; | |
152 | union acpi_object arg; | |
153 | ||
154 | ||
155 | ACPI_FUNCTION_TRACE ("acpi_enter_sleep_state_prep"); | |
156 | ||
157 | ||
158 | /* | |
159 | * _PSW methods could be run here to enable wake-on keyboard, LAN, etc. | |
160 | */ | |
161 | status = acpi_get_sleep_type_data (sleep_state, | |
162 | &acpi_gbl_sleep_type_a, &acpi_gbl_sleep_type_b); | |
163 | if (ACPI_FAILURE (status)) { | |
164 | return_ACPI_STATUS (status); | |
165 | } | |
166 | ||
167 | /* Setup parameter object */ | |
168 | ||
169 | arg_list.count = 1; | |
170 | arg_list.pointer = &arg; | |
171 | ||
172 | arg.type = ACPI_TYPE_INTEGER; | |
173 | arg.integer.value = sleep_state; | |
174 | ||
175 | /* Run the _PTS and _GTS methods */ | |
176 | ||
177 | status = acpi_evaluate_object (NULL, METHOD_NAME__PTS, &arg_list, NULL); | |
178 | if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) { | |
179 | return_ACPI_STATUS (status); | |
180 | } | |
181 | ||
182 | status = acpi_evaluate_object (NULL, METHOD_NAME__GTS, &arg_list, NULL); | |
183 | if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) { | |
184 | return_ACPI_STATUS (status); | |
185 | } | |
186 | ||
187 | /* Setup the argument to _SST */ | |
188 | ||
189 | switch (sleep_state) { | |
190 | case ACPI_STATE_S0: | |
191 | arg.integer.value = ACPI_SST_WORKING; | |
192 | break; | |
193 | ||
194 | case ACPI_STATE_S1: | |
195 | case ACPI_STATE_S2: | |
196 | case ACPI_STATE_S3: | |
197 | arg.integer.value = ACPI_SST_SLEEPING; | |
198 | break; | |
199 | ||
200 | case ACPI_STATE_S4: | |
201 | arg.integer.value = ACPI_SST_SLEEP_CONTEXT; | |
202 | break; | |
203 | ||
204 | default: | |
44f6c012 | 205 | arg.integer.value = ACPI_SST_INDICATOR_OFF; /* Default is off */ |
1da177e4 LT |
206 | break; |
207 | } | |
208 | ||
209 | /* Set the system indicators to show the desired sleep state. */ | |
210 | ||
211 | status = acpi_evaluate_object (NULL, METHOD_NAME__SST, &arg_list, NULL); | |
212 | if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) { | |
44f6c012 RM |
213 | ACPI_REPORT_ERROR (("Method _SST failed, %s\n", |
214 | acpi_format_exception (status))); | |
1da177e4 LT |
215 | } |
216 | ||
217 | return_ACPI_STATUS (AE_OK); | |
218 | } | |
219 | ||
220 | ||
44f6c012 | 221 | /******************************************************************************* |
1da177e4 LT |
222 | * |
223 | * FUNCTION: acpi_enter_sleep_state | |
224 | * | |
225 | * PARAMETERS: sleep_state - Which sleep state to enter | |
226 | * | |
227 | * RETURN: Status | |
228 | * | |
229 | * DESCRIPTION: Enter a system sleep state (see ACPI 2.0 spec p 231) | |
230 | * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED | |
231 | * | |
232 | ******************************************************************************/ | |
233 | ||
234 | acpi_status asmlinkage | |
235 | acpi_enter_sleep_state ( | |
236 | u8 sleep_state) | |
237 | { | |
238 | u32 PM1Acontrol; | |
239 | u32 PM1Bcontrol; | |
240 | struct acpi_bit_register_info *sleep_type_reg_info; | |
241 | struct acpi_bit_register_info *sleep_enable_reg_info; | |
242 | u32 in_value; | |
243 | acpi_status status; | |
244 | ||
245 | ||
246 | ACPI_FUNCTION_TRACE ("acpi_enter_sleep_state"); | |
247 | ||
248 | ||
249 | if ((acpi_gbl_sleep_type_a > ACPI_SLEEP_TYPE_MAX) || | |
250 | (acpi_gbl_sleep_type_b > ACPI_SLEEP_TYPE_MAX)) { | |
251 | ACPI_REPORT_ERROR (("Sleep values out of range: A=%X B=%X\n", | |
252 | acpi_gbl_sleep_type_a, acpi_gbl_sleep_type_b)); | |
253 | return_ACPI_STATUS (AE_AML_OPERAND_VALUE); | |
254 | } | |
255 | ||
256 | sleep_type_reg_info = acpi_hw_get_bit_register_info (ACPI_BITREG_SLEEP_TYPE_A); | |
257 | sleep_enable_reg_info = acpi_hw_get_bit_register_info (ACPI_BITREG_SLEEP_ENABLE); | |
258 | ||
259 | /* Clear wake status */ | |
260 | ||
261 | status = acpi_set_register (ACPI_BITREG_WAKE_STATUS, 1, ACPI_MTX_DO_NOT_LOCK); | |
262 | if (ACPI_FAILURE (status)) { | |
263 | return_ACPI_STATUS (status); | |
264 | } | |
265 | ||
266 | /* Clear all fixed and general purpose status bits */ | |
267 | ||
268 | status = acpi_hw_clear_acpi_status (ACPI_MTX_DO_NOT_LOCK); | |
269 | if (ACPI_FAILURE (status)) { | |
270 | return_ACPI_STATUS (status); | |
271 | } | |
272 | ||
273 | /* | |
274 | * 1) Disable/Clear all GPEs | |
275 | * 2) Enable all wakeup GPEs | |
276 | */ | |
277 | status = acpi_hw_disable_all_gpes (ACPI_ISR); | |
278 | if (ACPI_FAILURE (status)) { | |
279 | return_ACPI_STATUS (status); | |
280 | } | |
281 | acpi_gbl_system_awake_and_running = FALSE; | |
282 | ||
283 | status = acpi_hw_enable_all_wakeup_gpes (ACPI_ISR); | |
284 | if (ACPI_FAILURE (status)) { | |
285 | return_ACPI_STATUS (status); | |
286 | } | |
287 | ||
288 | /* Get current value of PM1A control */ | |
289 | ||
44f6c012 RM |
290 | status = acpi_hw_register_read (ACPI_MTX_DO_NOT_LOCK, |
291 | ACPI_REGISTER_PM1_CONTROL, &PM1Acontrol); | |
1da177e4 LT |
292 | if (ACPI_FAILURE (status)) { |
293 | return_ACPI_STATUS (status); | |
294 | } | |
44f6c012 RM |
295 | ACPI_DEBUG_PRINT ((ACPI_DB_INIT, |
296 | "Entering sleep state [S%d]\n", sleep_state)); | |
1da177e4 LT |
297 | |
298 | /* Clear SLP_EN and SLP_TYP fields */ | |
299 | ||
44f6c012 RM |
300 | PM1Acontrol &= ~(sleep_type_reg_info->access_bit_mask | |
301 | sleep_enable_reg_info->access_bit_mask); | |
1da177e4 LT |
302 | PM1Bcontrol = PM1Acontrol; |
303 | ||
304 | /* Insert SLP_TYP bits */ | |
305 | ||
306 | PM1Acontrol |= (acpi_gbl_sleep_type_a << sleep_type_reg_info->bit_position); | |
307 | PM1Bcontrol |= (acpi_gbl_sleep_type_b << sleep_type_reg_info->bit_position); | |
308 | ||
309 | /* | |
310 | * We split the writes of SLP_TYP and SLP_EN to workaround | |
311 | * poorly implemented hardware. | |
312 | */ | |
313 | ||
314 | /* Write #1: fill in SLP_TYP data */ | |
315 | ||
44f6c012 RM |
316 | status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, |
317 | ACPI_REGISTER_PM1A_CONTROL, PM1Acontrol); | |
1da177e4 LT |
318 | if (ACPI_FAILURE (status)) { |
319 | return_ACPI_STATUS (status); | |
320 | } | |
321 | ||
44f6c012 RM |
322 | status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, |
323 | ACPI_REGISTER_PM1B_CONTROL, PM1Bcontrol); | |
1da177e4 LT |
324 | if (ACPI_FAILURE (status)) { |
325 | return_ACPI_STATUS (status); | |
326 | } | |
327 | ||
328 | /* Insert SLP_ENABLE bit */ | |
329 | ||
330 | PM1Acontrol |= sleep_enable_reg_info->access_bit_mask; | |
331 | PM1Bcontrol |= sleep_enable_reg_info->access_bit_mask; | |
332 | ||
333 | /* Write #2: SLP_TYP + SLP_EN */ | |
334 | ||
335 | ACPI_FLUSH_CPU_CACHE (); | |
336 | ||
44f6c012 RM |
337 | status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, |
338 | ACPI_REGISTER_PM1A_CONTROL, PM1Acontrol); | |
1da177e4 LT |
339 | if (ACPI_FAILURE (status)) { |
340 | return_ACPI_STATUS (status); | |
341 | } | |
342 | ||
44f6c012 RM |
343 | status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, |
344 | ACPI_REGISTER_PM1B_CONTROL, PM1Bcontrol); | |
1da177e4 LT |
345 | if (ACPI_FAILURE (status)) { |
346 | return_ACPI_STATUS (status); | |
347 | } | |
348 | ||
349 | if (sleep_state > ACPI_STATE_S3) { | |
350 | /* | |
44f6c012 RM |
351 | * We wanted to sleep > S3, but it didn't happen (by virtue of the |
352 | * fact that we are still executing!) | |
1da177e4 | 353 | * |
44f6c012 RM |
354 | * Wait ten seconds, then try again. This is to get S4/S5 to work on |
355 | * all machines. | |
1da177e4 LT |
356 | * |
357 | * We wait so long to allow chipsets that poll this reg very slowly to | |
358 | * still read the right value. Ideally, this block would go | |
359 | * away entirely. | |
360 | */ | |
361 | acpi_os_stall (10000000); | |
362 | ||
44f6c012 RM |
363 | status = acpi_hw_register_write (ACPI_MTX_DO_NOT_LOCK, |
364 | ACPI_REGISTER_PM1_CONTROL, | |
1da177e4 LT |
365 | sleep_enable_reg_info->access_bit_mask); |
366 | if (ACPI_FAILURE (status)) { | |
367 | return_ACPI_STATUS (status); | |
368 | } | |
369 | } | |
370 | ||
371 | /* Wait until we enter sleep state */ | |
372 | ||
373 | do { | |
44f6c012 RM |
374 | status = acpi_get_register (ACPI_BITREG_WAKE_STATUS, &in_value, |
375 | ACPI_MTX_DO_NOT_LOCK); | |
1da177e4 LT |
376 | if (ACPI_FAILURE (status)) { |
377 | return_ACPI_STATUS (status); | |
378 | } | |
379 | ||
380 | /* Spin until we wake */ | |
381 | ||
382 | } while (!in_value); | |
383 | ||
384 | return_ACPI_STATUS (AE_OK); | |
385 | } | |
386 | EXPORT_SYMBOL(acpi_enter_sleep_state); | |
387 | ||
388 | ||
44f6c012 | 389 | /******************************************************************************* |
1da177e4 LT |
390 | * |
391 | * FUNCTION: acpi_enter_sleep_state_s4bios | |
392 | * | |
393 | * PARAMETERS: None | |
394 | * | |
395 | * RETURN: Status | |
396 | * | |
397 | * DESCRIPTION: Perform a S4 bios request. | |
398 | * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED | |
399 | * | |
400 | ******************************************************************************/ | |
401 | ||
402 | acpi_status asmlinkage | |
403 | acpi_enter_sleep_state_s4bios ( | |
404 | void) | |
405 | { | |
406 | u32 in_value; | |
407 | acpi_status status; | |
408 | ||
409 | ||
410 | ACPI_FUNCTION_TRACE ("acpi_enter_sleep_state_s4bios"); | |
411 | ||
412 | ||
413 | status = acpi_set_register (ACPI_BITREG_WAKE_STATUS, 1, ACPI_MTX_DO_NOT_LOCK); | |
414 | if (ACPI_FAILURE (status)) { | |
415 | return_ACPI_STATUS (status); | |
416 | } | |
417 | ||
418 | status = acpi_hw_clear_acpi_status (ACPI_MTX_DO_NOT_LOCK); | |
419 | if (ACPI_FAILURE (status)) { | |
420 | return_ACPI_STATUS (status); | |
421 | } | |
422 | ||
423 | /* | |
424 | * 1) Disable/Clear all GPEs | |
425 | * 2) Enable all wakeup GPEs | |
426 | */ | |
427 | status = acpi_hw_disable_all_gpes (ACPI_ISR); | |
428 | if (ACPI_FAILURE (status)) { | |
429 | return_ACPI_STATUS (status); | |
430 | } | |
431 | acpi_gbl_system_awake_and_running = FALSE; | |
432 | ||
433 | status = acpi_hw_enable_all_wakeup_gpes (ACPI_ISR); | |
434 | if (ACPI_FAILURE (status)) { | |
435 | return_ACPI_STATUS (status); | |
436 | } | |
437 | ||
438 | ACPI_FLUSH_CPU_CACHE (); | |
439 | ||
44f6c012 RM |
440 | status = acpi_os_write_port (acpi_gbl_FADT->smi_cmd, |
441 | (u32) acpi_gbl_FADT->S4bios_req, 8); | |
1da177e4 LT |
442 | |
443 | do { | |
444 | acpi_os_stall(1000); | |
44f6c012 RM |
445 | status = acpi_get_register (ACPI_BITREG_WAKE_STATUS, &in_value, |
446 | ACPI_MTX_DO_NOT_LOCK); | |
1da177e4 LT |
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 | ||
44f6c012 | 457 | /******************************************************************************* |
1da177e4 LT |
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) { | |
44f6c012 RM |
537 | ACPI_REPORT_ERROR (("Method _SST failed, %s\n", |
538 | acpi_format_exception (status))); | |
1da177e4 LT |
539 | } |
540 | ||
541 | arg.integer.value = sleep_state; | |
542 | status = acpi_evaluate_object (NULL, METHOD_NAME__BFS, &arg_list, NULL); | |
543 | if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) { | |
44f6c012 RM |
544 | ACPI_REPORT_ERROR (("Method _BFS failed, %s\n", |
545 | acpi_format_exception (status))); | |
1da177e4 LT |
546 | } |
547 | ||
548 | status = acpi_evaluate_object (NULL, METHOD_NAME__WAK, &arg_list, NULL); | |
549 | if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) { | |
44f6c012 RM |
550 | ACPI_REPORT_ERROR (("Method _WAK failed, %s\n", |
551 | acpi_format_exception (status))); | |
1da177e4 LT |
552 | } |
553 | /* TBD: _WAK "sometimes" returns stuff - do we want to look at it? */ | |
554 | ||
555 | /* | |
556 | * Restore the GPEs: | |
557 | * 1) Disable/Clear all GPEs | |
558 | * 2) Enable all runtime GPEs | |
559 | */ | |
560 | status = acpi_hw_disable_all_gpes (ACPI_NOT_ISR); | |
561 | if (ACPI_FAILURE (status)) { | |
562 | return_ACPI_STATUS (status); | |
563 | } | |
564 | acpi_gbl_system_awake_and_running = TRUE; | |
565 | ||
566 | status = acpi_hw_enable_all_runtime_gpes (ACPI_NOT_ISR); | |
567 | if (ACPI_FAILURE (status)) { | |
568 | return_ACPI_STATUS (status); | |
569 | } | |
570 | ||
571 | /* Enable power button */ | |
572 | ||
44f6c012 RM |
573 | (void) acpi_set_register( |
574 | acpi_gbl_fixed_event_info[ACPI_EVENT_POWER_BUTTON].enable_register_id, | |
1da177e4 | 575 | 1, ACPI_MTX_DO_NOT_LOCK); |
44f6c012 RM |
576 | |
577 | (void) acpi_set_register( | |
578 | acpi_gbl_fixed_event_info[ACPI_EVENT_POWER_BUTTON].status_register_id, | |
1da177e4 LT |
579 | 1, ACPI_MTX_DO_NOT_LOCK); |
580 | ||
581 | arg.integer.value = ACPI_SST_WORKING; | |
582 | status = acpi_evaluate_object (NULL, METHOD_NAME__SST, &arg_list, NULL); | |
583 | if (ACPI_FAILURE (status) && status != AE_NOT_FOUND) { | |
44f6c012 RM |
584 | ACPI_REPORT_ERROR (("Method _SST failed, %s\n", |
585 | acpi_format_exception (status))); | |
1da177e4 LT |
586 | } |
587 | ||
588 | return_ACPI_STATUS (status); | |
589 | } |