hwsleep.c revision 123315
171867Smsmith 271867Smsmith/****************************************************************************** 371867Smsmith * 471867Smsmith * Name: hwsleep.c - ACPI Hardware Sleep/Wake Interface 5123315Snjl * $Revision: 58 $ 671867Smsmith * 771867Smsmith *****************************************************************************/ 871867Smsmith 971867Smsmith/****************************************************************************** 1071867Smsmith * 1171867Smsmith * 1. Copyright Notice 1271867Smsmith * 13114237Snjl * Some or all of this work - Copyright (c) 1999 - 2003, Intel Corp. 1471867Smsmith * All rights reserved. 1571867Smsmith * 1671867Smsmith * 2. License 1771867Smsmith * 1871867Smsmith * 2.1. This is your license from Intel Corp. under its intellectual property 1971867Smsmith * rights. You may have additional license terms from the party that provided 2071867Smsmith * you this software, covering your right to use that party's intellectual 2171867Smsmith * property rights. 2271867Smsmith * 2371867Smsmith * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 2471867Smsmith * copy of the source code appearing in this file ("Covered Code") an 2571867Smsmith * irrevocable, perpetual, worldwide license under Intel's copyrights in the 2671867Smsmith * base code distributed originally by Intel ("Original Intel Code") to copy, 2771867Smsmith * make derivatives, distribute, use and display any portion of the Covered 2871867Smsmith * Code in any form, with the right to sublicense such rights; and 2971867Smsmith * 3071867Smsmith * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 3171867Smsmith * license (with the right to sublicense), under only those claims of Intel 3271867Smsmith * patents that are infringed by the Original Intel Code, to make, use, sell, 3371867Smsmith * offer to sell, and import the Covered Code and derivative works thereof 3471867Smsmith * solely to the minimum extent necessary to exercise the above copyright 3571867Smsmith * license, and in no event shall the patent license extend to any additions 3671867Smsmith * to or modifications of the Original Intel Code. No other license or right 3771867Smsmith * is granted directly or by implication, estoppel or otherwise; 3871867Smsmith * 3971867Smsmith * The above copyright and patent license is granted only if the following 4071867Smsmith * conditions are met: 4171867Smsmith * 4271867Smsmith * 3. Conditions 4371867Smsmith * 4471867Smsmith * 3.1. Redistribution of Source with Rights to Further Distribute Source. 4571867Smsmith * Redistribution of source code of any substantial portion of the Covered 4671867Smsmith * Code or modification with rights to further distribute source must include 4771867Smsmith * the above Copyright Notice, the above License, this list of Conditions, 4871867Smsmith * and the following Disclaimer and Export Compliance provision. In addition, 4971867Smsmith * Licensee must cause all Covered Code to which Licensee contributes to 5071867Smsmith * contain a file documenting the changes Licensee made to create that Covered 5171867Smsmith * Code and the date of any change. Licensee must include in that file the 5271867Smsmith * documentation of any changes made by any predecessor Licensee. Licensee 5371867Smsmith * must include a prominent statement that the modification is derived, 5471867Smsmith * directly or indirectly, from Original Intel Code. 5571867Smsmith * 5671867Smsmith * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 5771867Smsmith * Redistribution of source code of any substantial portion of the Covered 5871867Smsmith * Code or modification without rights to further distribute source must 5971867Smsmith * include the following Disclaimer and Export Compliance provision in the 6071867Smsmith * documentation and/or other materials provided with distribution. In 6171867Smsmith * addition, Licensee may not authorize further sublicense of source of any 6271867Smsmith * portion of the Covered Code, and must include terms to the effect that the 6371867Smsmith * license from Licensee to its licensee is limited to the intellectual 6471867Smsmith * property embodied in the software Licensee provides to its licensee, and 6571867Smsmith * not to intellectual property embodied in modifications its licensee may 6671867Smsmith * make. 6771867Smsmith * 6871867Smsmith * 3.3. Redistribution of Executable. Redistribution in executable form of any 6971867Smsmith * substantial portion of the Covered Code or modification must reproduce the 7071867Smsmith * above Copyright Notice, and the following Disclaimer and Export Compliance 7171867Smsmith * provision in the documentation and/or other materials provided with the 7271867Smsmith * distribution. 7371867Smsmith * 7471867Smsmith * 3.4. Intel retains all right, title, and interest in and to the Original 7571867Smsmith * Intel Code. 7671867Smsmith * 7771867Smsmith * 3.5. Neither the name Intel nor any other trademark owned or controlled by 7871867Smsmith * Intel shall be used in advertising or otherwise to promote the sale, use or 7971867Smsmith * other dealings in products derived from or relating to the Covered Code 8071867Smsmith * without prior written authorization from Intel. 8171867Smsmith * 8271867Smsmith * 4. Disclaimer and Export Compliance 8371867Smsmith * 8471867Smsmith * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 8571867Smsmith * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 8671867Smsmith * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 8771867Smsmith * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 8871867Smsmith * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 8971867Smsmith * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 9071867Smsmith * PARTICULAR PURPOSE. 9171867Smsmith * 9271867Smsmith * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 9371867Smsmith * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 9471867Smsmith * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 9571867Smsmith * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 9671867Smsmith * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 9771867Smsmith * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 9871867Smsmith * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 9971867Smsmith * LIMITED REMEDY. 10071867Smsmith * 10171867Smsmith * 4.3. Licensee shall not export, either directly or indirectly, any of this 10271867Smsmith * software or system incorporating such software without first obtaining any 10371867Smsmith * required license or other approval from the U. S. Department of Commerce or 10471867Smsmith * any other agency or department of the United States Government. In the 10571867Smsmith * event Licensee exports any such software from the United States or 10671867Smsmith * re-exports any such software from a foreign destination, Licensee shall 10771867Smsmith * ensure that the distribution and export/re-export of the software is in 10871867Smsmith * compliance with all laws, regulations, orders, or other restrictions of the 10971867Smsmith * U.S. Export Administration Regulations. Licensee agrees that neither it nor 11071867Smsmith * any of its subsidiaries will export/re-export any technical data, process, 11171867Smsmith * software, or service, directly or indirectly, to any country for which the 11271867Smsmith * United States government or any agency thereof requires an export license, 11371867Smsmith * other governmental approval, or letter of assurance, without first obtaining 11471867Smsmith * such license, approval or letter. 11571867Smsmith * 11671867Smsmith *****************************************************************************/ 11771867Smsmith 11871867Smsmith#include "acpi.h" 11971867Smsmith 12077424Smsmith#define _COMPONENT ACPI_HARDWARE 12191116Smsmith ACPI_MODULE_NAME ("hwsleep") 12271867Smsmith 12371867Smsmith 12471867Smsmith/****************************************************************************** 12571867Smsmith * 12671867Smsmith * FUNCTION: AcpiSetFirmwareWakingVector 12771867Smsmith * 12871867Smsmith * PARAMETERS: PhysicalAddress - Physical address of ACPI real mode 12971867Smsmith * entry point. 13071867Smsmith * 13191116Smsmith * RETURN: Status 13271867Smsmith * 13371867Smsmith * DESCRIPTION: Access function for dFirmwareWakingVector field in FACS 13471867Smsmith * 13571867Smsmith ******************************************************************************/ 13671867Smsmith 13771867SmsmithACPI_STATUS 13871867SmsmithAcpiSetFirmwareWakingVector ( 13971867Smsmith ACPI_PHYSICAL_ADDRESS PhysicalAddress) 14071867Smsmith{ 14171867Smsmith 14291116Smsmith ACPI_FUNCTION_TRACE ("AcpiSetFirmwareWakingVector"); 14371867Smsmith 14471867Smsmith 14571867Smsmith /* Set the vector */ 14671867Smsmith 14791116Smsmith if (AcpiGbl_CommonFACS.VectorWidth == 32) 14871867Smsmith { 149102550Siwasaki *(ACPI_CAST_PTR (UINT32, AcpiGbl_CommonFACS.FirmwareWakingVector)) 15099679Siwasaki = (UINT32) PhysicalAddress; 15171867Smsmith } 15271867Smsmith else 15371867Smsmith { 154102550Siwasaki *AcpiGbl_CommonFACS.FirmwareWakingVector 15599679Siwasaki = PhysicalAddress; 15671867Smsmith } 15771867Smsmith 15871867Smsmith return_ACPI_STATUS (AE_OK); 15971867Smsmith} 16071867Smsmith 16171867Smsmith 16271867Smsmith/****************************************************************************** 16371867Smsmith * 16471867Smsmith * FUNCTION: AcpiGetFirmwareWakingVector 16571867Smsmith * 16671867Smsmith * PARAMETERS: *PhysicalAddress - Output buffer where contents of 16771867Smsmith * the FirmwareWakingVector field of 16871867Smsmith * the FACS will be stored. 16971867Smsmith * 17071867Smsmith * RETURN: Status 17171867Smsmith * 17291116Smsmith * DESCRIPTION: Access function for FirmwareWakingVector field in FACS 17371867Smsmith * 17471867Smsmith ******************************************************************************/ 17571867Smsmith 17671867SmsmithACPI_STATUS 17771867SmsmithAcpiGetFirmwareWakingVector ( 17871867Smsmith ACPI_PHYSICAL_ADDRESS *PhysicalAddress) 17971867Smsmith{ 18071867Smsmith 18191116Smsmith ACPI_FUNCTION_TRACE ("AcpiGetFirmwareWakingVector"); 18271867Smsmith 18371867Smsmith 18471867Smsmith if (!PhysicalAddress) 18571867Smsmith { 18671867Smsmith return_ACPI_STATUS (AE_BAD_PARAMETER); 18771867Smsmith } 18871867Smsmith 18971867Smsmith /* Get the vector */ 19071867Smsmith 19191116Smsmith if (AcpiGbl_CommonFACS.VectorWidth == 32) 19271867Smsmith { 193102550Siwasaki *PhysicalAddress = (ACPI_PHYSICAL_ADDRESS) 19499679Siwasaki *(ACPI_CAST_PTR (UINT32, AcpiGbl_CommonFACS.FirmwareWakingVector)); 19571867Smsmith } 19671867Smsmith else 19771867Smsmith { 198102550Siwasaki *PhysicalAddress = 19999679Siwasaki *AcpiGbl_CommonFACS.FirmwareWakingVector; 20071867Smsmith } 20171867Smsmith 20271867Smsmith return_ACPI_STATUS (AE_OK); 20371867Smsmith} 20471867Smsmith 20587031Smsmith 20671867Smsmith/****************************************************************************** 20771867Smsmith * 20887031Smsmith * FUNCTION: AcpiEnterSleepStatePrep 20971867Smsmith * 21071867Smsmith * PARAMETERS: SleepState - Which sleep state to enter 21171867Smsmith * 21271867Smsmith * RETURN: Status 21371867Smsmith * 21487031Smsmith * DESCRIPTION: Prepare to enter a system sleep state (see ACPI 2.0 spec p 231) 21587031Smsmith * This function must execute with interrupts enabled. 21687031Smsmith * We break sleeping into 2 stages so that OSPM can handle 21787031Smsmith * various OS-specific tasks between the two steps. 21871867Smsmith * 21971867Smsmith ******************************************************************************/ 22071867Smsmith 22171867SmsmithACPI_STATUS 22287031SmsmithAcpiEnterSleepStatePrep ( 22377424Smsmith UINT8 SleepState) 22471867Smsmith{ 22577424Smsmith ACPI_STATUS Status; 22677424Smsmith ACPI_OBJECT_LIST ArgList; 22777424Smsmith ACPI_OBJECT Arg; 22871867Smsmith 22977424Smsmith 23091116Smsmith ACPI_FUNCTION_TRACE ("AcpiEnterSleepStatePrep"); 23191116Smsmith 23291116Smsmith 23371867Smsmith /* 23471867Smsmith * _PSW methods could be run here to enable wake-on keyboard, LAN, etc. 23571867Smsmith */ 23699679Siwasaki Status = AcpiGetSleepTypeData (SleepState, 23791116Smsmith &AcpiGbl_SleepTypeA, &AcpiGbl_SleepTypeB); 23891116Smsmith if (ACPI_FAILURE (Status)) 23971867Smsmith { 24087031Smsmith return_ACPI_STATUS (Status); 24171867Smsmith } 24271867Smsmith 24391116Smsmith /* Setup parameter object */ 24477424Smsmith 24571867Smsmith ArgList.Count = 1; 24671867Smsmith ArgList.Pointer = &Arg; 24771867Smsmith 24871867Smsmith Arg.Type = ACPI_TYPE_INTEGER; 24971867Smsmith Arg.Integer.Value = SleepState; 25071867Smsmith 25191116Smsmith /* Run the _PTS and _GTS methods */ 25277424Smsmith 25391116Smsmith Status = AcpiEvaluateObject (NULL, "\\_PTS", &ArgList, NULL); 25491116Smsmith if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND) 25591116Smsmith { 25691116Smsmith return_ACPI_STATUS (Status); 25791116Smsmith } 25891116Smsmith 25991116Smsmith Status = AcpiEvaluateObject (NULL, "\\_GTS", &ArgList, NULL); 26091116Smsmith if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND) 26191116Smsmith { 26291116Smsmith return_ACPI_STATUS (Status); 26391116Smsmith } 26491116Smsmith 265123315Snjl /* Set the system indicators to show the desired sleep state. */ 266123315Snjl 267123315Snjl Status = AcpiEvaluateObject (NULL, "\\_SI._SST", &ArgList, NULL); 268123315Snjl if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND) 269123315Snjl { 270123315Snjl ACPI_REPORT_ERROR (("Method _SST failed, %s\n", AcpiFormatException (Status))); 271123315Snjl } 272123315Snjl 27387031Smsmith return_ACPI_STATUS (AE_OK); 27487031Smsmith} 27587031Smsmith 27687031Smsmith 27787031Smsmith/****************************************************************************** 27887031Smsmith * 27987031Smsmith * FUNCTION: AcpiEnterSleepState 28087031Smsmith * 28187031Smsmith * PARAMETERS: SleepState - Which sleep state to enter 28287031Smsmith * 28387031Smsmith * RETURN: Status 28487031Smsmith * 28587031Smsmith * DESCRIPTION: Enter a system sleep state (see ACPI 2.0 spec p 231) 28687031Smsmith * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED 28787031Smsmith * 28887031Smsmith ******************************************************************************/ 28987031Smsmith 29087031SmsmithACPI_STATUS 29187031SmsmithAcpiEnterSleepState ( 29291116Smsmith UINT8 SleepState) 29387031Smsmith{ 29499679Siwasaki UINT32 PM1AControl; 29599679Siwasaki UINT32 PM1BControl; 29691116Smsmith ACPI_BIT_REGISTER_INFO *SleepTypeRegInfo; 29791116Smsmith ACPI_BIT_REGISTER_INFO *SleepEnableRegInfo; 29899679Siwasaki UINT32 InValue; 29999679Siwasaki ACPI_STATUS Status; 30087031Smsmith 30187031Smsmith 30291116Smsmith ACPI_FUNCTION_TRACE ("AcpiEnterSleepState"); 30387031Smsmith 30491116Smsmith 30591116Smsmith if ((AcpiGbl_SleepTypeA > ACPI_SLEEP_TYPE_MAX) || 30691116Smsmith (AcpiGbl_SleepTypeB > ACPI_SLEEP_TYPE_MAX)) 30787031Smsmith { 30899679Siwasaki ACPI_REPORT_ERROR (("Sleep values out of range: A=%X B=%X\n", 30991116Smsmith AcpiGbl_SleepTypeA, AcpiGbl_SleepTypeB)); 31091116Smsmith return_ACPI_STATUS (AE_AML_OPERAND_VALUE); 31187031Smsmith } 31287031Smsmith 31391116Smsmith SleepTypeRegInfo = AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_TYPE_A); 31491116Smsmith SleepEnableRegInfo = AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_ENABLE); 31571867Smsmith 316123315Snjl if (SleepState != ACPI_STATE_S5) 31799679Siwasaki { 318123315Snjl /* Clear wake status */ 31978986Smsmith 320123315Snjl Status = AcpiSetRegister (ACPI_BITREG_WAKE_STATUS, 1, ACPI_MTX_DO_NOT_LOCK); 321123315Snjl if (ACPI_FAILURE (Status)) 322123315Snjl { 323123315Snjl return_ACPI_STATUS (Status); 324123315Snjl } 32587031Smsmith 326123315Snjl Status = AcpiHwClearAcpiStatus (ACPI_MTX_DO_NOT_LOCK); 327123315Snjl if (ACPI_FAILURE (Status)) 328123315Snjl { 329123315Snjl return_ACPI_STATUS (Status); 330123315Snjl } 33171867Smsmith 332123315Snjl /* Disable BM arbitration */ 333123315Snjl 334123315Snjl Status = AcpiSetRegister (ACPI_BITREG_ARB_DISABLE, 1, ACPI_MTX_DO_NOT_LOCK); 335123315Snjl if (ACPI_FAILURE (Status)) 336123315Snjl { 337123315Snjl return_ACPI_STATUS (Status); 338123315Snjl } 33999679Siwasaki } 34099679Siwasaki 34199679Siwasaki Status = AcpiHwDisableNonWakeupGpes(); 34299679Siwasaki if (ACPI_FAILURE (Status)) 34399679Siwasaki { 34499679Siwasaki return_ACPI_STATUS (Status); 34599679Siwasaki } 34699679Siwasaki 34791116Smsmith /* Get current value of PM1A control */ 34878986Smsmith 349114237Snjl Status = AcpiHwRegisterRead (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1_CONTROL, &PM1AControl); 35099679Siwasaki if (ACPI_FAILURE (Status)) 35199679Siwasaki { 35299679Siwasaki return_ACPI_STATUS (Status); 35399679Siwasaki } 354114237Snjl ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "Entering sleep state [S%d]\n", SleepState)); 35582367Smsmith 35691116Smsmith /* Clear SLP_EN and SLP_TYP fields */ 35782367Smsmith 35891116Smsmith PM1AControl &= ~(SleepTypeRegInfo->AccessBitMask | SleepEnableRegInfo->AccessBitMask); 35971867Smsmith PM1BControl = PM1AControl; 36071867Smsmith 36191116Smsmith /* Insert SLP_TYP bits */ 36282367Smsmith 36391116Smsmith PM1AControl |= (AcpiGbl_SleepTypeA << SleepTypeRegInfo->BitPosition); 36491116Smsmith PM1BControl |= (AcpiGbl_SleepTypeB << SleepTypeRegInfo->BitPosition); 36571867Smsmith 36691116Smsmith /* Write #1: fill in SLP_TYP data */ 36771867Smsmith 368114237Snjl Status = AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1A_CONTROL, PM1AControl); 36999679Siwasaki if (ACPI_FAILURE (Status)) 37099679Siwasaki { 37199679Siwasaki return_ACPI_STATUS (Status); 37299679Siwasaki } 37382367Smsmith 374114237Snjl Status = AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1B_CONTROL, PM1BControl); 37599679Siwasaki if (ACPI_FAILURE (Status)) 37699679Siwasaki { 37799679Siwasaki return_ACPI_STATUS (Status); 37899679Siwasaki } 37999679Siwasaki 38091116Smsmith /* Insert SLP_ENABLE bit */ 38182367Smsmith 38291116Smsmith PM1AControl |= SleepEnableRegInfo->AccessBitMask; 38391116Smsmith PM1BControl |= SleepEnableRegInfo->AccessBitMask; 38471867Smsmith 38591116Smsmith /* Write #2: SLP_TYP + SLP_EN */ 38671867Smsmith 38799679Siwasaki ACPI_FLUSH_CPU_CACHE (); 38880062Smsmith 389114237Snjl Status = AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1A_CONTROL, PM1AControl); 39099679Siwasaki if (ACPI_FAILURE (Status)) 39199679Siwasaki { 39299679Siwasaki return_ACPI_STATUS (Status); 39399679Siwasaki } 39499679Siwasaki 395114237Snjl Status = AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1B_CONTROL, PM1BControl); 39699679Siwasaki if (ACPI_FAILURE (Status)) 39799679Siwasaki { 39899679Siwasaki return_ACPI_STATUS (Status); 39999679Siwasaki } 40099679Siwasaki 40182367Smsmith if (SleepState > ACPI_STATE_S3) 40282367Smsmith { 40399679Siwasaki /* 404123315Snjl * We wanted to sleep > S3, but it didn't happen (by virtue of the fact that 405123315Snjl * we are still executing!) 406123315Snjl * 407123315Snjl * Wait ten seconds, then try again. This is to get S4/S5 to work on all machines. 408123315Snjl * 40999679Siwasaki * We wait so long to allow chipsets that poll this reg very slowly to 41099679Siwasaki * still read the right value. Ideally, this entire block would go 41199679Siwasaki * away entirely. 41299679Siwasaki */ 41399679Siwasaki AcpiOsStall (10000000); 41482367Smsmith 415114237Snjl Status = AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1_CONTROL, 41699679Siwasaki SleepEnableRegInfo->AccessBitMask); 41799679Siwasaki if (ACPI_FAILURE (Status)) 41899679Siwasaki { 41999679Siwasaki return_ACPI_STATUS (Status); 42099679Siwasaki } 42180357Speter } 42280062Smsmith 42391116Smsmith /* Wait until we enter sleep state */ 42471867Smsmith 425102550Siwasaki do 42683174Smsmith { 427114237Snjl Status = AcpiGetRegister (ACPI_BITREG_WAKE_STATUS, &InValue, ACPI_MTX_DO_NOT_LOCK); 42899679Siwasaki if (ACPI_FAILURE (Status)) 42999679Siwasaki { 43099679Siwasaki return_ACPI_STATUS (Status); 43199679Siwasaki } 43299679Siwasaki 43391116Smsmith /* Spin until we wake */ 43482367Smsmith 43599679Siwasaki } while (!InValue); 43699679Siwasaki 43771867Smsmith return_ACPI_STATUS (AE_OK); 43871867Smsmith} 43982367Smsmith 440114237Snjl 44182367Smsmith/****************************************************************************** 44282367Smsmith * 443114237Snjl * FUNCTION: AcpiEnterSleepStateS4bios 444114237Snjl * 445114237Snjl * PARAMETERS: None 446114237Snjl * 447114237Snjl * RETURN: Status 448114237Snjl * 449114237Snjl * DESCRIPTION: Perform a S4 bios request. 450114237Snjl * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED 451114237Snjl * 452114237Snjl ******************************************************************************/ 453114237Snjl 454114237SnjlACPI_STATUS 455114237SnjlAcpiEnterSleepStateS4bios ( 456114237Snjl void) 457114237Snjl{ 458114237Snjl UINT32 InValue; 459114237Snjl ACPI_STATUS Status; 460114237Snjl 461114237Snjl 462114237Snjl ACPI_FUNCTION_TRACE ("AcpiEnterSleepStateS4bios"); 463114237Snjl 464123315Snjl 465114237Snjl AcpiSetRegister (ACPI_BITREG_WAKE_STATUS, 1, ACPI_MTX_DO_NOT_LOCK); 466117521Snjl AcpiHwClearAcpiStatus(ACPI_MTX_DO_NOT_LOCK); 467114237Snjl 468114237Snjl AcpiHwDisableNonWakeupGpes(); 469114237Snjl 470114237Snjl ACPI_FLUSH_CPU_CACHE(); 471114237Snjl 472117521Snjl Status = AcpiOsWritePort (AcpiGbl_FADT->SmiCmd, (UINT32) AcpiGbl_FADT->S4BiosReq, 8); 473114237Snjl 474114237Snjl do { 475114237Snjl AcpiOsStall(1000); 476114237Snjl Status = AcpiGetRegister (ACPI_BITREG_WAKE_STATUS, &InValue, ACPI_MTX_DO_NOT_LOCK); 477114237Snjl if (ACPI_FAILURE (Status)) 478114237Snjl { 479114237Snjl return_ACPI_STATUS (Status); 480114237Snjl } 481114237Snjl } while (!InValue); 482114237Snjl 483114237Snjl return_ACPI_STATUS (AE_OK); 484114237Snjl} 485114237Snjl 486114237Snjl 487114237Snjl/****************************************************************************** 488114237Snjl * 48982367Smsmith * FUNCTION: AcpiLeaveSleepState 49082367Smsmith * 49182367Smsmith * PARAMETERS: SleepState - Which sleep state we just exited 49282367Smsmith * 49382367Smsmith * RETURN: Status 49482367Smsmith * 49582367Smsmith * DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep 49682367Smsmith * 49782367Smsmith ******************************************************************************/ 49882367Smsmith 49982367SmsmithACPI_STATUS 50082367SmsmithAcpiLeaveSleepState ( 501123315Snjl UINT8 SleepState) 50282367Smsmith{ 503123315Snjl ACPI_OBJECT_LIST ArgList; 504123315Snjl ACPI_OBJECT Arg; 505123315Snjl ACPI_STATUS Status; 506123315Snjl ACPI_BIT_REGISTER_INFO *SleepTypeRegInfo; 507123315Snjl ACPI_BIT_REGISTER_INFO *SleepEnableRegInfo; 508123315Snjl UINT32 PM1xControl; 50982367Smsmith 51083174Smsmith 51191116Smsmith ACPI_FUNCTION_TRACE ("AcpiLeaveSleepState"); 51282367Smsmith 513123315Snjl /* Some machines require SLP_TYPE and SLP_EN to be cleared */ 51491116Smsmith 515123315Snjl SleepTypeRegInfo = AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_TYPE_A); 516123315Snjl SleepEnableRegInfo = AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_ENABLE); 517123315Snjl 518123315Snjl /* Get current value of PM1A control */ 519123315Snjl 520123315Snjl Status = AcpiHwRegisterRead (ACPI_MTX_DO_NOT_LOCK, 521123315Snjl ACPI_REGISTER_PM1_CONTROL, &PM1xControl); 522123315Snjl if (ACPI_SUCCESS (Status)) 523123315Snjl { 524123315Snjl /* Clear SLP_TYP and SLP_EN */ 525123315Snjl 526123315Snjl PM1xControl &= ~(SleepTypeRegInfo->AccessBitMask | 527123315Snjl SleepEnableRegInfo->AccessBitMask); 528123315Snjl 529123315Snjl AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK, 530123315Snjl ACPI_REGISTER_PM1A_CONTROL, PM1xControl); 531123315Snjl AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK, 532123315Snjl ACPI_REGISTER_PM1B_CONTROL, PM1xControl); 533123315Snjl } 534123315Snjl 53587031Smsmith /* Ensure EnterSleepStatePrep -> EnterSleepState ordering */ 53682367Smsmith 53791116Smsmith AcpiGbl_SleepTypeA = ACPI_SLEEP_TYPE_INVALID; 53891116Smsmith 53991116Smsmith /* Setup parameter object */ 54091116Smsmith 54182367Smsmith ArgList.Count = 1; 54282367Smsmith ArgList.Pointer = &Arg; 54382367Smsmith Arg.Type = ACPI_TYPE_INTEGER; 54482367Smsmith 54591116Smsmith /* Ignore any errors from these methods */ 54683174Smsmith 547123315Snjl Arg.Integer.Value = 0; 548123315Snjl Status = AcpiEvaluateObject (NULL, "\\_SI._SST", &ArgList, NULL); 549123315Snjl if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND) 550123315Snjl { 551123315Snjl ACPI_REPORT_ERROR (("Method _SST failed, %s\n", AcpiFormatException (Status))); 552123315Snjl } 553123315Snjl 554123315Snjl Arg.Integer.Value = SleepState; 55591116Smsmith Status = AcpiEvaluateObject (NULL, "\\_BFS", &ArgList, NULL); 55691116Smsmith if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND) 55791116Smsmith { 55891116Smsmith ACPI_REPORT_ERROR (("Method _BFS failed, %s\n", AcpiFormatException (Status))); 55991116Smsmith } 56091116Smsmith 56191116Smsmith Status = AcpiEvaluateObject (NULL, "\\_WAK", &ArgList, NULL); 56291116Smsmith if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND) 56391116Smsmith { 56491116Smsmith ACPI_REPORT_ERROR (("Method _WAK failed, %s\n", AcpiFormatException (Status))); 56591116Smsmith } 56691116Smsmith 56782367Smsmith /* _WAK returns stuff - do we want to look at it? */ 56882367Smsmith 56999679Siwasaki Status = AcpiHwEnableNonWakeupGpes(); 57099679Siwasaki if (ACPI_FAILURE (Status)) 57199679Siwasaki { 57299679Siwasaki return_ACPI_STATUS (Status); 57399679Siwasaki } 57482367Smsmith 575123315Snjl /* Enable BM arbitration */ 576123315Snjl 57799679Siwasaki Status = AcpiSetRegister (ACPI_BITREG_ARB_DISABLE, 0, ACPI_MTX_LOCK); 57899679Siwasaki return_ACPI_STATUS (Status); 57982367Smsmith} 580