2 /******************************************************************************
4 * Name: hwsleep.c - ACPI Hardware Sleep/Wake Interface
7 *****************************************************************************/
9 /******************************************************************************
13 * Some or all of this work - Copyright (c) 1999 - 2004, Intel Corp.
14 * All rights reserved.
18 * 2.1. This is your license from Intel Corp. under its intellectual property
19 * rights. You may have additional license terms from the party that provided
20 * you this software, covering your right to use that party's intellectual
23 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
24 * copy of the source code appearing in this file ("Covered Code") an
25 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
26 * base code distributed originally by Intel ("Original Intel Code") to copy,
27 * make derivatives, distribute, use and display any portion of the Covered
28 * Code in any form, with the right to sublicense such rights; and
30 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
31 * license (with the right to sublicense), under only those claims of Intel
32 * patents that are infringed by the Original Intel Code, to make, use, sell,
33 * offer to sell, and import the Covered Code and derivative works thereof
34 * solely to the minimum extent necessary to exercise the above copyright
35 * license, and in no event shall the patent license extend to any additions
36 * to or modifications of the Original Intel Code. No other license or right
37 * is granted directly or by implication, estoppel or otherwise;
39 * The above copyright and patent license is granted only if the following
44 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
45 * Redistribution of source code of any substantial portion of the Covered
46 * Code or modification with rights to further distribute source must include
47 * the above Copyright Notice, the above License, this list of Conditions,
48 * and the following Disclaimer and Export Compliance provision. In addition,
49 * Licensee must cause all Covered Code to which Licensee contributes to
50 * contain a file documenting the changes Licensee made to create that Covered
51 * Code and the date of any change. Licensee must include in that file the
52 * documentation of any changes made by any predecessor Licensee. Licensee
53 * must include a prominent statement that the modification is derived,
54 * directly or indirectly, from Original Intel Code.
56 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
57 * Redistribution of source code of any substantial portion of the Covered
58 * Code or modification without rights to further distribute source must
59 * include the following Disclaimer and Export Compliance provision in the
60 * documentation and/or other materials provided with distribution. In
61 * addition, Licensee may not authorize further sublicense of source of any
62 * portion of the Covered Code, and must include terms to the effect that the
63 * license from Licensee to its licensee is limited to the intellectual
64 * property embodied in the software Licensee provides to its licensee, and
65 * not to intellectual property embodied in modifications its licensee may
68 * 3.3. Redistribution of Executable. Redistribution in executable form of any
69 * substantial portion of the Covered Code or modification must reproduce the
70 * above Copyright Notice, and the following Disclaimer and Export Compliance
71 * provision in the documentation and/or other materials provided with the
74 * 3.4. Intel retains all right, title, and interest in and to the Original
77 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
78 * Intel shall be used in advertising or otherwise to promote the sale, use or
79 * other dealings in products derived from or relating to the Covered Code
80 * without prior written authorization from Intel.
82 * 4. Disclaimer and Export Compliance
84 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
85 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
86 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
87 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
88 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
89 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
92 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
93 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
94 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
95 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
96 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
97 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
98 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
101 * 4.3. Licensee shall not export, either directly or indirectly, any of this
102 * software or system incorporating such software without first obtaining any
103 * required license or other approval from the U. S. Department of Commerce or
104 * any other agency or department of the United States Government. In the
105 * event Licensee exports any such software from the United States or
106 * re-exports any such software from a foreign destination, Licensee shall
107 * ensure that the distribution and export/re-export of the software is in
108 * compliance with all laws, regulations, orders, or other restrictions of the
109 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
110 * any of its subsidiaries will export/re-export any technical data, process,
111 * software, or service, directly or indirectly, to any country for which the
112 * United States government or any agency thereof requires an export license,
113 * other governmental approval, or letter of assurance, without first obtaining
114 * such license, approval or letter.
116 *****************************************************************************/
118 #include <contrib/dev/acpica/acpi.h>
120 #define _COMPONENT ACPI_HARDWARE
121 ACPI_MODULE_NAME ("hwsleep")
124 #define METHOD_NAME__BFS "\\_BFS"
125 #define METHOD_NAME__GTS "\\_GTS"
126 #define METHOD_NAME__PTS "\\_PTS"
127 #define METHOD_NAME__SST "\\_SI._SST"
128 #define METHOD_NAME__WAK "\\_WAK"
130 #define ACPI_SST_INDICATOR_OFF 0
131 #define ACPI_SST_WORKING 1
132 #define ACPI_SST_WAKING 2
133 #define ACPI_SST_SLEEPING 3
134 #define ACPI_SST_SLEEP_CONTEXT 4
137 /******************************************************************************
139 * FUNCTION: AcpiSetFirmwareWakingVector
141 * PARAMETERS: PhysicalAddress - Physical address of ACPI real mode
146 * DESCRIPTION: Access function for dFirmwareWakingVector field in FACS
148 ******************************************************************************/
151 AcpiSetFirmwareWakingVector (
152 ACPI_PHYSICAL_ADDRESS PhysicalAddress)
155 ACPI_FUNCTION_TRACE ("AcpiSetFirmwareWakingVector");
160 if (AcpiGbl_CommonFACS.VectorWidth == 32)
162 *(ACPI_CAST_PTR (UINT32, AcpiGbl_CommonFACS.FirmwareWakingVector))
163 = (UINT32) PhysicalAddress;
167 *AcpiGbl_CommonFACS.FirmwareWakingVector
171 return_ACPI_STATUS (AE_OK);
175 /******************************************************************************
177 * FUNCTION: AcpiGetFirmwareWakingVector
179 * PARAMETERS: *PhysicalAddress - Output buffer where contents of
180 * the FirmwareWakingVector field of
181 * the FACS will be stored.
185 * DESCRIPTION: Access function for FirmwareWakingVector field in FACS
187 ******************************************************************************/
190 AcpiGetFirmwareWakingVector (
191 ACPI_PHYSICAL_ADDRESS *PhysicalAddress)
194 ACPI_FUNCTION_TRACE ("AcpiGetFirmwareWakingVector");
197 if (!PhysicalAddress)
199 return_ACPI_STATUS (AE_BAD_PARAMETER);
204 if (AcpiGbl_CommonFACS.VectorWidth == 32)
206 *PhysicalAddress = (ACPI_PHYSICAL_ADDRESS)
207 *(ACPI_CAST_PTR (UINT32, AcpiGbl_CommonFACS.FirmwareWakingVector));
212 *AcpiGbl_CommonFACS.FirmwareWakingVector;
215 return_ACPI_STATUS (AE_OK);
219 /******************************************************************************
221 * FUNCTION: AcpiEnterSleepStatePrep
223 * PARAMETERS: SleepState - Which sleep state to enter
227 * DESCRIPTION: Prepare to enter a system sleep state (see ACPI 2.0 spec p 231)
228 * This function must execute with interrupts enabled.
229 * We break sleeping into 2 stages so that OSPM can handle
230 * various OS-specific tasks between the two steps.
232 ******************************************************************************/
235 AcpiEnterSleepStatePrep (
239 ACPI_OBJECT_LIST ArgList;
243 ACPI_FUNCTION_TRACE ("AcpiEnterSleepStatePrep");
247 * _PSW methods could be run here to enable wake-on keyboard, LAN, etc.
249 Status = AcpiGetSleepTypeData (SleepState,
250 &AcpiGbl_SleepTypeA, &AcpiGbl_SleepTypeB);
251 if (ACPI_FAILURE (Status))
253 return_ACPI_STATUS (Status);
256 /* Setup parameter object */
259 ArgList.Pointer = &Arg;
261 Arg.Type = ACPI_TYPE_INTEGER;
262 Arg.Integer.Value = SleepState;
264 /* Run the _PTS and _GTS methods */
266 Status = AcpiEvaluateObject (NULL, METHOD_NAME__PTS, &ArgList, NULL);
267 if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND)
269 return_ACPI_STATUS (Status);
272 Status = AcpiEvaluateObject (NULL, METHOD_NAME__GTS, &ArgList, NULL);
273 if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND)
275 return_ACPI_STATUS (Status);
278 /* Setup the argument to _SST */
283 Arg.Integer.Value = ACPI_SST_WORKING;
289 Arg.Integer.Value = ACPI_SST_SLEEPING;
293 Arg.Integer.Value = ACPI_SST_SLEEP_CONTEXT;
297 Arg.Integer.Value = ACPI_SST_INDICATOR_OFF; /* Default is indicator off */
301 /* Set the system indicators to show the desired sleep state. */
303 Status = AcpiEvaluateObject (NULL, METHOD_NAME__SST, &ArgList, NULL);
304 if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND)
306 ACPI_REPORT_ERROR (("Method _SST failed, %s\n", AcpiFormatException (Status)));
309 return_ACPI_STATUS (AE_OK);
313 /******************************************************************************
315 * FUNCTION: AcpiEnterSleepState
317 * PARAMETERS: SleepState - Which sleep state to enter
321 * DESCRIPTION: Enter a system sleep state (see ACPI 2.0 spec p 231)
322 * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
324 ******************************************************************************/
327 AcpiEnterSleepState (
332 ACPI_BIT_REGISTER_INFO *SleepTypeRegInfo;
333 ACPI_BIT_REGISTER_INFO *SleepEnableRegInfo;
338 ACPI_FUNCTION_TRACE ("AcpiEnterSleepState");
341 if ((AcpiGbl_SleepTypeA > ACPI_SLEEP_TYPE_MAX) ||
342 (AcpiGbl_SleepTypeB > ACPI_SLEEP_TYPE_MAX))
344 ACPI_REPORT_ERROR (("Sleep values out of range: A=%X B=%X\n",
345 AcpiGbl_SleepTypeA, AcpiGbl_SleepTypeB));
346 return_ACPI_STATUS (AE_AML_OPERAND_VALUE);
349 SleepTypeRegInfo = AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_TYPE_A);
350 SleepEnableRegInfo = AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_ENABLE);
352 /* Clear wake status */
354 Status = AcpiSetRegister (ACPI_BITREG_WAKE_STATUS, 1, ACPI_MTX_DO_NOT_LOCK);
355 if (ACPI_FAILURE (Status))
357 return_ACPI_STATUS (Status);
360 /* Clear all fixed and general purpose status bits */
362 Status = AcpiHwClearAcpiStatus (ACPI_MTX_DO_NOT_LOCK);
363 if (ACPI_FAILURE (Status))
365 return_ACPI_STATUS (Status);
368 if (SleepState != ACPI_STATE_S5)
370 /* Disable BM arbitration */
372 Status = AcpiSetRegister (ACPI_BITREG_ARB_DISABLE, 1, ACPI_MTX_DO_NOT_LOCK);
373 if (ACPI_FAILURE (Status))
375 return_ACPI_STATUS (Status);
380 * 1) Disable/Clear all GPEs
381 * 2) Enable all wakeup GPEs
383 Status = AcpiHwDisableAllGpes (ACPI_ISR);
384 if (ACPI_FAILURE (Status))
386 return_ACPI_STATUS (Status);
388 AcpiGbl_SystemAwakeAndRunning = FALSE;
390 Status = AcpiHwEnableAllWakeupGpes (ACPI_ISR);
391 if (ACPI_FAILURE (Status))
393 return_ACPI_STATUS (Status);
396 /* Get current value of PM1A control */
398 Status = AcpiHwRegisterRead (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1_CONTROL, &PM1AControl);
399 if (ACPI_FAILURE (Status))
401 return_ACPI_STATUS (Status);
403 ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "Entering sleep state [S%d]\n", SleepState));
405 /* Clear SLP_EN and SLP_TYP fields */
407 PM1AControl &= ~(SleepTypeRegInfo->AccessBitMask | SleepEnableRegInfo->AccessBitMask);
408 PM1BControl = PM1AControl;
410 /* Insert SLP_TYP bits */
412 PM1AControl |= (AcpiGbl_SleepTypeA << SleepTypeRegInfo->BitPosition);
413 PM1BControl |= (AcpiGbl_SleepTypeB << SleepTypeRegInfo->BitPosition);
416 * We split the writes of SLP_TYP and SLP_EN to workaround
417 * poorly implemented hardware.
420 /* Write #1: fill in SLP_TYP data */
422 Status = AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1A_CONTROL, PM1AControl);
423 if (ACPI_FAILURE (Status))
425 return_ACPI_STATUS (Status);
428 Status = AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1B_CONTROL, PM1BControl);
429 if (ACPI_FAILURE (Status))
431 return_ACPI_STATUS (Status);
434 /* Insert SLP_ENABLE bit */
436 PM1AControl |= SleepEnableRegInfo->AccessBitMask;
437 PM1BControl |= SleepEnableRegInfo->AccessBitMask;
439 /* Write #2: SLP_TYP + SLP_EN */
441 ACPI_FLUSH_CPU_CACHE ();
443 Status = AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1A_CONTROL, PM1AControl);
444 if (ACPI_FAILURE (Status))
446 return_ACPI_STATUS (Status);
449 Status = AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1B_CONTROL, PM1BControl);
450 if (ACPI_FAILURE (Status))
452 return_ACPI_STATUS (Status);
455 if (SleepState > ACPI_STATE_S3)
458 * We wanted to sleep > S3, but it didn't happen (by virtue of the fact that
459 * we are still executing!)
461 * Wait ten seconds, then try again. This is to get S4/S5 to work on all machines.
463 * We wait so long to allow chipsets that poll this reg very slowly to
464 * still read the right value. Ideally, this block would go
467 AcpiOsStall (10000000);
469 Status = AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1_CONTROL,
470 SleepEnableRegInfo->AccessBitMask);
471 if (ACPI_FAILURE (Status))
473 return_ACPI_STATUS (Status);
477 /* Wait until we enter sleep state */
481 Status = AcpiGetRegister (ACPI_BITREG_WAKE_STATUS, &InValue, ACPI_MTX_DO_NOT_LOCK);
482 if (ACPI_FAILURE (Status))
484 return_ACPI_STATUS (Status);
487 /* Spin until we wake */
491 return_ACPI_STATUS (AE_OK);
495 /******************************************************************************
497 * FUNCTION: AcpiEnterSleepStateS4bios
503 * DESCRIPTION: Perform a S4 bios request.
504 * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
506 ******************************************************************************/
509 AcpiEnterSleepStateS4bios (
516 ACPI_FUNCTION_TRACE ("AcpiEnterSleepStateS4bios");
519 Status = AcpiSetRegister (ACPI_BITREG_WAKE_STATUS, 1, ACPI_MTX_DO_NOT_LOCK);
520 if (ACPI_FAILURE (Status))
522 return_ACPI_STATUS (Status);
525 Status = AcpiHwClearAcpiStatus (ACPI_MTX_DO_NOT_LOCK);
526 if (ACPI_FAILURE (Status))
528 return_ACPI_STATUS (Status);
532 * 1) Disable/Clear all GPEs
533 * 2) Enable all wakeup GPEs
535 Status = AcpiHwDisableAllGpes (ACPI_ISR);
536 if (ACPI_FAILURE (Status))
538 return_ACPI_STATUS (Status);
540 AcpiGbl_SystemAwakeAndRunning = FALSE;
542 Status = AcpiHwEnableAllWakeupGpes (ACPI_ISR);
543 if (ACPI_FAILURE (Status))
545 return_ACPI_STATUS (Status);
548 ACPI_FLUSH_CPU_CACHE ();
550 Status = AcpiOsWritePort (AcpiGbl_FADT->SmiCmd, (UINT32) AcpiGbl_FADT->S4BiosReq, 8);
554 Status = AcpiGetRegister (ACPI_BITREG_WAKE_STATUS, &InValue, ACPI_MTX_DO_NOT_LOCK);
555 if (ACPI_FAILURE (Status))
557 return_ACPI_STATUS (Status);
561 return_ACPI_STATUS (AE_OK);
565 /******************************************************************************
567 * FUNCTION: AcpiLeaveSleepState
569 * PARAMETERS: SleepState - Which sleep state we just exited
573 * DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep
574 * Called with interrupts ENABLED.
576 ******************************************************************************/
579 AcpiLeaveSleepState (
582 ACPI_OBJECT_LIST ArgList;
585 ACPI_BIT_REGISTER_INFO *SleepTypeRegInfo;
586 ACPI_BIT_REGISTER_INFO *SleepEnableRegInfo;
591 ACPI_FUNCTION_TRACE ("AcpiLeaveSleepState");
595 * Set SLP_TYPE and SLP_EN to state S0.
596 * This is unclear from the ACPI Spec, but it is required
599 Status = AcpiGetSleepTypeData (ACPI_STATE_S0,
600 &AcpiGbl_SleepTypeA, &AcpiGbl_SleepTypeB);
601 if (ACPI_SUCCESS (Status))
603 SleepTypeRegInfo = AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_TYPE_A);
604 SleepEnableRegInfo = AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_ENABLE);
606 /* Get current value of PM1A control */
608 Status = AcpiHwRegisterRead (ACPI_MTX_DO_NOT_LOCK,
609 ACPI_REGISTER_PM1_CONTROL, &PM1AControl);
610 if (ACPI_SUCCESS (Status))
612 /* Clear SLP_EN and SLP_TYP fields */
614 PM1AControl &= ~(SleepTypeRegInfo->AccessBitMask |
615 SleepEnableRegInfo->AccessBitMask);
616 PM1BControl = PM1AControl;
618 /* Insert SLP_TYP bits */
620 PM1AControl |= (AcpiGbl_SleepTypeA << SleepTypeRegInfo->BitPosition);
621 PM1BControl |= (AcpiGbl_SleepTypeB << SleepTypeRegInfo->BitPosition);
623 /* Just ignore any errors */
625 (void) AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK,
626 ACPI_REGISTER_PM1A_CONTROL, PM1AControl);
627 (void) AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK,
628 ACPI_REGISTER_PM1B_CONTROL, PM1BControl);
632 /* Ensure EnterSleepStatePrep -> EnterSleepState ordering */
634 AcpiGbl_SleepTypeA = ACPI_SLEEP_TYPE_INVALID;
636 /* Setup parameter object */
639 ArgList.Pointer = &Arg;
640 Arg.Type = ACPI_TYPE_INTEGER;
642 /* Ignore any errors from these methods */
644 Arg.Integer.Value = ACPI_SST_WAKING;
645 Status = AcpiEvaluateObject (NULL, METHOD_NAME__SST, &ArgList, NULL);
646 if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND)
648 ACPI_REPORT_ERROR (("Method _SST failed, %s\n", AcpiFormatException (Status)));
651 Arg.Integer.Value = SleepState;
652 Status = AcpiEvaluateObject (NULL, METHOD_NAME__BFS, &ArgList, NULL);
653 if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND)
655 ACPI_REPORT_ERROR (("Method _BFS failed, %s\n", AcpiFormatException (Status)));
658 Status = AcpiEvaluateObject (NULL, METHOD_NAME__WAK, &ArgList, NULL);
659 if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND)
661 ACPI_REPORT_ERROR (("Method _WAK failed, %s\n", AcpiFormatException (Status)));
663 /* TBD: _WAK "sometimes" returns stuff - do we want to look at it? */
667 * 1) Disable/Clear all GPEs
668 * 2) Enable all runtime GPEs
670 Status = AcpiHwDisableAllGpes (ACPI_NOT_ISR);
671 if (ACPI_FAILURE (Status))
673 return_ACPI_STATUS (Status);
675 AcpiGbl_SystemAwakeAndRunning = TRUE;
677 Status = AcpiHwEnableAllRuntimeGpes (ACPI_NOT_ISR);
678 if (ACPI_FAILURE (Status))
680 return_ACPI_STATUS (Status);
683 /* Enable power button */
685 (void) AcpiSetRegister(AcpiGbl_FixedEventInfo[ACPI_EVENT_POWER_BUTTON].EnableRegisterId,
686 1, ACPI_MTX_DO_NOT_LOCK);
687 (void) AcpiSetRegister(AcpiGbl_FixedEventInfo[ACPI_EVENT_POWER_BUTTON].StatusRegisterId,
688 1, ACPI_MTX_DO_NOT_LOCK);
690 /* Enable BM arbitration */
692 Status = AcpiSetRegister (ACPI_BITREG_ARB_DISABLE, 0, ACPI_MTX_LOCK);
693 if (ACPI_FAILURE (Status))
695 return_ACPI_STATUS (Status);
698 Arg.Integer.Value = ACPI_SST_WORKING;
699 Status = AcpiEvaluateObject (NULL, METHOD_NAME__SST, &ArgList, NULL);
700 if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND)
702 ACPI_REPORT_ERROR (("Method _SST failed, %s\n", AcpiFormatException (Status)));
705 return_ACPI_STATUS (Status);