1 /******************************************************************************
2 *
3 * Name: hwxfsleep.c - ACPI Hardware Sleep/Wake External Interfaces
4 *
5 *****************************************************************************/
6
7 /******************************************************************************
8 *
9 * 1. Copyright Notice
10 *
11 * Some or all of this work - Copyright (c) 1999 - 2024, Intel Corp.
12 * All rights reserved.
13 *
14 * 2. License
15 *
16 * 2.1. This is your license from Intel Corp. under its intellectual property
17 * rights. You may have additional license terms from the party that provided
18 * you this software, covering your right to use that party's intellectual
19 * property rights.
20 *
21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22 * copy of the source code appearing in this file ("Covered Code") an
23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24 * base code distributed originally by Intel ("Original Intel Code") to copy,
25 * make derivatives, distribute, use and display any portion of the Covered
26 * Code in any form, with the right to sublicense such rights; and
27 *
28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29 * license (with the right to sublicense), under only those claims of Intel
30 * patents that are infringed by the Original Intel Code, to make, use, sell,
31 * offer to sell, and import the Covered Code and derivative works thereof
32 * solely to the minimum extent necessary to exercise the above copyright
33 * license, and in no event shall the patent license extend to any additions
34 * to or modifications of the Original Intel Code. No other license or right
35 * is granted directly or by implication, estoppel or otherwise;
36 *
37 * The above copyright and patent license is granted only if the following
38 * conditions are met:
39 *
40 * 3. Conditions
41 *
42 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43 * Redistribution of source code of any substantial portion of the Covered
44 * Code or modification with rights to further distribute source must include
45 * the above Copyright Notice, the above License, this list of Conditions,
46 * and the following Disclaimer and Export Compliance provision. In addition,
47 * Licensee must cause all Covered Code to which Licensee contributes to
48 * contain a file documenting the changes Licensee made to create that Covered
49 * Code and the date of any change. Licensee must include in that file the
50 * documentation of any changes made by any predecessor Licensee. Licensee
51 * must include a prominent statement that the modification is derived,
52 * directly or indirectly, from Original Intel Code.
53 *
54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55 * Redistribution of source code of any substantial portion of the Covered
56 * Code or modification without rights to further distribute source must
57 * include the following Disclaimer and Export Compliance provision in the
58 * documentation and/or other materials provided with distribution. In
59 * addition, Licensee may not authorize further sublicense of source of any
60 * portion of the Covered Code, and must include terms to the effect that the
61 * license from Licensee to its licensee is limited to the intellectual
62 * property embodied in the software Licensee provides to its licensee, and
63 * not to intellectual property embodied in modifications its licensee may
64 * make.
65 *
66 * 3.3. Redistribution of Executable. Redistribution in executable form of any
67 * substantial portion of the Covered Code or modification must reproduce the
68 * above Copyright Notice, and the following Disclaimer and Export Compliance
69 * provision in the documentation and/or other materials provided with the
70 * distribution.
71 *
72 * 3.4. Intel retains all right, title, and interest in and to the Original
73 * Intel Code.
74 *
75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76 * Intel shall be used in advertising or otherwise to promote the sale, use or
77 * other dealings in products derived from or relating to the Covered Code
78 * without prior written authorization from Intel.
79 *
80 * 4. Disclaimer and Export Compliance
81 *
82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88 * PARTICULAR PURPOSE.
89 *
90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97 * LIMITED REMEDY.
98 *
99 * 4.3. Licensee shall not export, either directly or indirectly, any of this
100 * software or system incorporating such software without first obtaining any
101 * required license or other approval from the U. S. Department of Commerce or
102 * any other agency or department of the United States Government. In the
103 * event Licensee exports any such software from the United States or
104 * re-exports any such software from a foreign destination, Licensee shall
105 * ensure that the distribution and export/re-export of the software is in
106 * compliance with all laws, regulations, orders, or other restrictions of the
107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108 * any of its subsidiaries will export/re-export any technical data, process,
109 * software, or service, directly or indirectly, to any country for which the
110 * United States government or any agency thereof requires an export license,
111 * other governmental approval, or letter of assurance, without first obtaining
112 * such license, approval or letter.
113 *
114 *****************************************************************************
115 *
116 * Alternatively, you may choose to be licensed under the terms of the
117 * following license:
118 *
119 * Redistribution and use in source and binary forms, with or without
120 * modification, are permitted provided that the following conditions
121 * are met:
122 * 1. Redistributions of source code must retain the above copyright
123 * notice, this list of conditions, and the following disclaimer,
124 * without modification.
125 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126 * substantially similar to the "NO WARRANTY" disclaimer below
127 * ("Disclaimer") and any redistribution must be conditioned upon
128 * including a substantially similar Disclaimer requirement for further
129 * binary redistribution.
130 * 3. Neither the names of the above-listed copyright holders nor the names
131 * of any contributors may be used to endorse or promote products derived
132 * from this software without specific prior written permission.
133 *
134 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
145 *
146 * Alternatively, you may choose to be licensed under the terms of the
147 * GNU General Public License ("GPL") version 2 as published by the Free
148 * Software Foundation.
149 *
150 *****************************************************************************/
151
152 #define EXPORT_ACPI_INTERFACES
153
154 #include <contrib/dev/acpica/include/acpi.h>
155 #include <contrib/dev/acpica/include/accommon.h>
156
157 #define _COMPONENT ACPI_HARDWARE
158 ACPI_MODULE_NAME ("hwxfsleep")
159
160 /* Local prototypes */
161
162 static ACPI_STATUS
163 AcpiHwSetFirmwareWakingVector (
164 ACPI_TABLE_FACS *Facs,
165 ACPI_PHYSICAL_ADDRESS PhysicalAddress,
166 ACPI_PHYSICAL_ADDRESS PhysicalAddress64);
167
168 static ACPI_STATUS
169 AcpiHwSleepDispatch (
170 UINT8 SleepState,
171 UINT32 FunctionId);
172
173 /*
174 * Dispatch table used to efficiently branch to the various sleep
175 * functions.
176 */
177 #define ACPI_SLEEP_FUNCTION_ID 0
178 #define ACPI_WAKE_PREP_FUNCTION_ID 1
179 #define ACPI_WAKE_FUNCTION_ID 2
180
181 /* Legacy functions are optional, based upon ACPI_REDUCED_HARDWARE */
182
183 static ACPI_SLEEP_FUNCTIONS AcpiSleepDispatch[] =
184 {
185 {ACPI_STRUCT_INIT (LegacyFunction,
186 ACPI_HW_OPTIONAL_FUNCTION (AcpiHwLegacySleep)),
187 ACPI_STRUCT_INIT (ExtendedFunction,
188 AcpiHwExtendedSleep) },
189 {ACPI_STRUCT_INIT (LegacyFunction,
190 ACPI_HW_OPTIONAL_FUNCTION (AcpiHwLegacyWakePrep)),
191 ACPI_STRUCT_INIT (ExtendedFunction,
192 AcpiHwExtendedWakePrep) },
193 {ACPI_STRUCT_INIT (LegacyFunction,
194 ACPI_HW_OPTIONAL_FUNCTION (AcpiHwLegacyWake)),
195 ACPI_STRUCT_INIT (ExtendedFunction,
196 AcpiHwExtendedWake) }
197 };
198
199
200 /*******************************************************************************
201 *
202 * FUNCTION: AcpiHwSetFirmwareWakingVector
203 *
204 * PARAMETERS: Facs - Pointer to FACS table
205 * PhysicalAddress - 32-bit physical address of ACPI real mode
206 * entry point
207 * PhysicalAddress64 - 64-bit physical address of ACPI protected
208 * mode entry point
209 *
210 * RETURN: Status
211 *
212 * DESCRIPTION: Sets the FirmwareWakingVector fields of the FACS
213 *
214 ******************************************************************************/
215
216 static ACPI_STATUS
AcpiHwSetFirmwareWakingVector(ACPI_TABLE_FACS * Facs,ACPI_PHYSICAL_ADDRESS PhysicalAddress,ACPI_PHYSICAL_ADDRESS PhysicalAddress64)217 AcpiHwSetFirmwareWakingVector (
218 ACPI_TABLE_FACS *Facs,
219 ACPI_PHYSICAL_ADDRESS PhysicalAddress,
220 ACPI_PHYSICAL_ADDRESS PhysicalAddress64)
221 {
222 ACPI_FUNCTION_TRACE (AcpiHwSetFirmwareWakingVector);
223
224
225 /*
226 * According to the ACPI specification 2.0c and later, the 64-bit
227 * waking vector should be cleared and the 32-bit waking vector should
228 * be used, unless we want the wake-up code to be called by the BIOS in
229 * Protected Mode. Some systems (for example HP dv5-1004nr) are known
230 * to fail to resume if the 64-bit vector is used.
231 */
232
233 /* Set the 32-bit vector */
234
235 Facs->FirmwareWakingVector = (UINT32) PhysicalAddress;
236
237 if (Facs->Length > 32)
238 {
239 if (Facs->Version >= 1)
240 {
241 /* Set the 64-bit vector */
242
243 Facs->XFirmwareWakingVector = PhysicalAddress64;
244 }
245 else
246 {
247 /* Clear the 64-bit vector if it exists */
248
249 Facs->XFirmwareWakingVector = 0;
250 }
251 }
252
253 return_ACPI_STATUS (AE_OK);
254 }
255
256
257 /*******************************************************************************
258 *
259 * FUNCTION: AcpiSetFirmwareWakingVector
260 *
261 * PARAMETERS: PhysicalAddress - 32-bit physical address of ACPI real mode
262 * entry point
263 * PhysicalAddress64 - 64-bit physical address of ACPI protected
264 * mode entry point
265 *
266 * RETURN: Status
267 *
268 * DESCRIPTION: Sets the FirmwareWakingVector fields of the FACS
269 *
270 ******************************************************************************/
271
272 ACPI_STATUS
AcpiSetFirmwareWakingVector(ACPI_PHYSICAL_ADDRESS PhysicalAddress,ACPI_PHYSICAL_ADDRESS PhysicalAddress64)273 AcpiSetFirmwareWakingVector (
274 ACPI_PHYSICAL_ADDRESS PhysicalAddress,
275 ACPI_PHYSICAL_ADDRESS PhysicalAddress64)
276 {
277
278 ACPI_FUNCTION_TRACE (AcpiSetFirmwareWakingVector);
279
280 if (AcpiGbl_FACS)
281 {
282 (void) AcpiHwSetFirmwareWakingVector (AcpiGbl_FACS,
283 PhysicalAddress, PhysicalAddress64);
284 }
285
286 return_ACPI_STATUS (AE_OK);
287 }
288
ACPI_EXPORT_SYMBOL(AcpiSetFirmwareWakingVector)289 ACPI_EXPORT_SYMBOL (AcpiSetFirmwareWakingVector)
290
291
292 /*
293 * These functions are removed for the ACPI_REDUCED_HARDWARE case:
294 * AcpiEnterSleepStateS4bios
295 */
296
297 #if (!ACPI_REDUCED_HARDWARE)
298 /*******************************************************************************
299 *
300 * FUNCTION: AcpiEnterSleepStateS4bios
301 *
302 * PARAMETERS: None
303 *
304 * RETURN: Status
305 *
306 * DESCRIPTION: Perform a S4 bios request.
307 * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
308 *
309 ******************************************************************************/
310
311 ACPI_STATUS
312 AcpiEnterSleepStateS4bios (
313 void)
314 {
315 UINT32 InValue;
316 ACPI_STATUS Status;
317
318
319 ACPI_FUNCTION_TRACE (AcpiEnterSleepStateS4bios);
320
321
322 /* Clear the wake status bit (PM1) */
323
324 Status = AcpiWriteBitRegister (ACPI_BITREG_WAKE_STATUS, ACPI_CLEAR_STATUS);
325 if (ACPI_FAILURE (Status))
326 {
327 return_ACPI_STATUS (Status);
328 }
329
330 Status = AcpiHwClearAcpiStatus ();
331 if (ACPI_FAILURE (Status))
332 {
333 return_ACPI_STATUS (Status);
334 }
335
336 /*
337 * 1) Disable all GPEs
338 * 2) Enable all wakeup GPEs
339 */
340 Status = AcpiHwDisableAllGpes ();
341 if (ACPI_FAILURE (Status))
342 {
343 return_ACPI_STATUS (Status);
344 }
345 AcpiGbl_SystemAwakeAndRunning = FALSE;
346
347 Status = AcpiHwEnableAllWakeupGpes ();
348 if (ACPI_FAILURE (Status))
349 {
350 return_ACPI_STATUS (Status);
351 }
352
353 Status = AcpiHwWritePort (AcpiGbl_FADT.SmiCommand,
354 (UINT32) AcpiGbl_FADT.S4BiosRequest, 8);
355 if (ACPI_FAILURE (Status))
356 {
357 return_ACPI_STATUS (Status);
358 }
359
360 do {
361 AcpiOsStall (ACPI_USEC_PER_MSEC);
362 Status = AcpiReadBitRegister (ACPI_BITREG_WAKE_STATUS, &InValue);
363 if (ACPI_FAILURE (Status))
364 {
365 return_ACPI_STATUS (Status);
366 }
367
368 } while (!InValue);
369
370 return_ACPI_STATUS (AE_OK);
371 }
372
ACPI_EXPORT_SYMBOL(AcpiEnterSleepStateS4bios)373 ACPI_EXPORT_SYMBOL (AcpiEnterSleepStateS4bios)
374
375 #endif /* !ACPI_REDUCED_HARDWARE */
376
377
378 /*******************************************************************************
379 *
380 * FUNCTION: AcpiHwSleepDispatch
381 *
382 * PARAMETERS: SleepState - Which sleep state to enter/exit
383 * FunctionId - Sleep, WakePrep, or Wake
384 *
385 * RETURN: Status from the invoked sleep handling function.
386 *
387 * DESCRIPTION: Dispatch a sleep/wake request to the appropriate handling
388 * function.
389 *
390 ******************************************************************************/
391
392 static ACPI_STATUS
393 AcpiHwSleepDispatch (
394 UINT8 SleepState,
395 UINT32 FunctionId)
396 {
397 ACPI_STATUS Status;
398 ACPI_SLEEP_FUNCTIONS *SleepFunctions = &AcpiSleepDispatch[FunctionId];
399
400
401 #if (!ACPI_REDUCED_HARDWARE)
402 /*
403 * If the Hardware Reduced flag is set (from the FADT), we must
404 * use the extended sleep registers (FADT). Note: As per the ACPI
405 * specification, these extended registers are to be used for HW-reduced
406 * platforms only. They are not general-purpose replacements for the
407 * legacy PM register sleep support.
408 */
409 if (AcpiGbl_ReducedHardware)
410 {
411 Status = SleepFunctions->ExtendedFunction (SleepState);
412 }
413 else
414 {
415 /* Legacy sleep */
416
417 Status = SleepFunctions->LegacyFunction (SleepState);
418 }
419
420 return (Status);
421
422 #else
423 /*
424 * For the case where reduced-hardware-only code is being generated,
425 * we know that only the extended sleep registers are available
426 */
427 Status = SleepFunctions->ExtendedFunction (SleepState);
428 return (Status);
429
430 #endif /* !ACPI_REDUCED_HARDWARE */
431 }
432
433
434 /*******************************************************************************
435 *
436 * FUNCTION: AcpiEnterSleepStatePrep
437 *
438 * PARAMETERS: SleepState - Which sleep state to enter
439 *
440 * RETURN: Status
441 *
442 * DESCRIPTION: Prepare to enter a system sleep state.
443 * This function must execute with interrupts enabled.
444 * We break sleeping into 2 stages so that OSPM can handle
445 * various OS-specific tasks between the two steps.
446 *
447 ******************************************************************************/
448
449 ACPI_STATUS
AcpiEnterSleepStatePrep(UINT8 SleepState)450 AcpiEnterSleepStatePrep (
451 UINT8 SleepState)
452 {
453 ACPI_STATUS Status;
454 ACPI_OBJECT_LIST ArgList;
455 ACPI_OBJECT Arg;
456 UINT32 SstValue;
457
458
459 ACPI_FUNCTION_TRACE (AcpiEnterSleepStatePrep);
460
461
462 Status = AcpiGetSleepTypeData (SleepState,
463 &AcpiGbl_SleepTypeA, &AcpiGbl_SleepTypeB);
464 if (ACPI_FAILURE (Status))
465 {
466 return_ACPI_STATUS (Status);
467 }
468
469 Status = AcpiGetSleepTypeData (ACPI_STATE_S0,
470 &AcpiGbl_SleepTypeAS0, &AcpiGbl_SleepTypeBS0);
471 if (ACPI_FAILURE (Status)) {
472 AcpiGbl_SleepTypeAS0 = ACPI_SLEEP_TYPE_INVALID;
473 }
474
475 /* Execute the _PTS method (Prepare To Sleep) */
476
477 ArgList.Count = 1;
478 ArgList.Pointer = &Arg;
479 Arg.Type = ACPI_TYPE_INTEGER;
480 Arg.Integer.Value = SleepState;
481
482 Status = AcpiEvaluateObject (NULL, METHOD_PATHNAME__PTS, &ArgList, NULL);
483 if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND)
484 {
485 return_ACPI_STATUS (Status);
486 }
487
488 /* Setup the argument to the _SST method (System STatus) */
489
490 switch (SleepState)
491 {
492 case ACPI_STATE_S0:
493
494 SstValue = ACPI_SST_WORKING;
495 break;
496
497 case ACPI_STATE_S1:
498 case ACPI_STATE_S2:
499 case ACPI_STATE_S3:
500
501 SstValue = ACPI_SST_SLEEPING;
502 break;
503
504 case ACPI_STATE_S4:
505
506 SstValue = ACPI_SST_SLEEP_CONTEXT;
507 break;
508
509 default:
510
511 SstValue = ACPI_SST_INDICATOR_OFF; /* Default is off */
512 break;
513 }
514
515 /*
516 * Set the system indicators to show the desired sleep state.
517 * _SST is an optional method (return no error if not found)
518 */
519 AcpiHwExecuteSleepMethod (METHOD_PATHNAME__SST, SstValue);
520 return_ACPI_STATUS (AE_OK);
521 }
522
ACPI_EXPORT_SYMBOL(AcpiEnterSleepStatePrep)523 ACPI_EXPORT_SYMBOL (AcpiEnterSleepStatePrep)
524
525
526 /*******************************************************************************
527 *
528 * FUNCTION: AcpiEnterSleepState
529 *
530 * PARAMETERS: SleepState - Which sleep state to enter
531 *
532 * RETURN: Status
533 *
534 * DESCRIPTION: Enter a system sleep state
535 * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
536 *
537 ******************************************************************************/
538
539 ACPI_STATUS
540 AcpiEnterSleepState (
541 UINT8 SleepState)
542 {
543 ACPI_STATUS Status;
544
545
546 ACPI_FUNCTION_TRACE (AcpiEnterSleepState);
547
548
549 if ((AcpiGbl_SleepTypeA > ACPI_SLEEP_TYPE_MAX) ||
550 (AcpiGbl_SleepTypeB > ACPI_SLEEP_TYPE_MAX))
551 {
552 ACPI_ERROR ((AE_INFO, "Sleep values out of range: A=0x%X B=0x%X",
553 AcpiGbl_SleepTypeA, AcpiGbl_SleepTypeB));
554 return_ACPI_STATUS (AE_AML_OPERAND_VALUE);
555 }
556
557 Status = AcpiHwSleepDispatch (SleepState, ACPI_SLEEP_FUNCTION_ID);
558 return_ACPI_STATUS (Status);
559 }
560
ACPI_EXPORT_SYMBOL(AcpiEnterSleepState)561 ACPI_EXPORT_SYMBOL (AcpiEnterSleepState)
562
563
564 /*******************************************************************************
565 *
566 * FUNCTION: AcpiLeaveSleepStatePrep
567 *
568 * PARAMETERS: SleepState - Which sleep state we are exiting
569 *
570 * RETURN: Status
571 *
572 * DESCRIPTION: Perform the first state of OS-independent ACPI cleanup after a
573 * sleep. Called with interrupts DISABLED.
574 * We break wake/resume into 2 stages so that OSPM can handle
575 * various OS-specific tasks between the two steps.
576 *
577 ******************************************************************************/
578
579 ACPI_STATUS
580 AcpiLeaveSleepStatePrep (
581 UINT8 SleepState)
582 {
583 ACPI_STATUS Status;
584
585
586 ACPI_FUNCTION_TRACE (AcpiLeaveSleepStatePrep);
587
588
589 Status = AcpiHwSleepDispatch (SleepState, ACPI_WAKE_PREP_FUNCTION_ID);
590 return_ACPI_STATUS (Status);
591 }
592
ACPI_EXPORT_SYMBOL(AcpiLeaveSleepStatePrep)593 ACPI_EXPORT_SYMBOL (AcpiLeaveSleepStatePrep)
594
595
596 /*******************************************************************************
597 *
598 * FUNCTION: AcpiLeaveSleepState
599 *
600 * PARAMETERS: SleepState - Which sleep state we are exiting
601 *
602 * RETURN: Status
603 *
604 * DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep
605 * Called with interrupts ENABLED.
606 *
607 ******************************************************************************/
608
609 ACPI_STATUS
610 AcpiLeaveSleepState (
611 UINT8 SleepState)
612 {
613 ACPI_STATUS Status;
614
615
616 ACPI_FUNCTION_TRACE (AcpiLeaveSleepState);
617
618
619 Status = AcpiHwSleepDispatch (SleepState, ACPI_WAKE_FUNCTION_ID);
620 return_ACPI_STATUS (Status);
621 }
622
623 ACPI_EXPORT_SYMBOL (AcpiLeaveSleepState)
624