d244b2279c
Discussed with: core [1]
654 lines
18 KiB
C
654 lines
18 KiB
C
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/******************************************************************************
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*
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* Name: hwsleep.c - ACPI Hardware Sleep/Wake Interface
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2011, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <contrib/dev/acpica/include/acpi.h>
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#include <contrib/dev/acpica/include/accommon.h>
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#define _COMPONENT ACPI_HARDWARE
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ACPI_MODULE_NAME ("hwsleep")
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/*******************************************************************************
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*
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* FUNCTION: AcpiSetFirmwareWakingVector
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*
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* PARAMETERS: PhysicalAddress - 32-bit physical address of ACPI real mode
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* entry point.
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*
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* RETURN: Status
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*
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* DESCRIPTION: Sets the 32-bit FirmwareWakingVector field of the FACS
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiSetFirmwareWakingVector (
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UINT32 PhysicalAddress)
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{
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ACPI_FUNCTION_TRACE (AcpiSetFirmwareWakingVector);
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/* Set the 32-bit vector */
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AcpiGbl_FACS->FirmwareWakingVector = PhysicalAddress;
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/* Clear the 64-bit vector if it exists */
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if ((AcpiGbl_FACS->Length > 32) && (AcpiGbl_FACS->Version >= 1))
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{
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AcpiGbl_FACS->XFirmwareWakingVector = 0;
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}
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return_ACPI_STATUS (AE_OK);
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}
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ACPI_EXPORT_SYMBOL (AcpiSetFirmwareWakingVector)
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#if ACPI_MACHINE_WIDTH == 64
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/*******************************************************************************
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*
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* FUNCTION: AcpiSetFirmwareWakingVector64
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*
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* PARAMETERS: PhysicalAddress - 64-bit physical address of ACPI protected
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* mode entry point.
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*
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* RETURN: Status
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*
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* DESCRIPTION: Sets the 64-bit X_FirmwareWakingVector field of the FACS, if
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* it exists in the table. This function is intended for use with
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* 64-bit host operating systems.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiSetFirmwareWakingVector64 (
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UINT64 PhysicalAddress)
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{
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ACPI_FUNCTION_TRACE (AcpiSetFirmwareWakingVector64);
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/* Determine if the 64-bit vector actually exists */
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if ((AcpiGbl_FACS->Length <= 32) || (AcpiGbl_FACS->Version < 1))
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{
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return_ACPI_STATUS (AE_NOT_EXIST);
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}
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/* Clear 32-bit vector, set the 64-bit X_ vector */
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AcpiGbl_FACS->FirmwareWakingVector = 0;
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AcpiGbl_FACS->XFirmwareWakingVector = PhysicalAddress;
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return_ACPI_STATUS (AE_OK);
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}
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ACPI_EXPORT_SYMBOL (AcpiSetFirmwareWakingVector64)
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#endif
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/*******************************************************************************
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*
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* FUNCTION: AcpiEnterSleepStatePrep
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*
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* PARAMETERS: SleepState - Which sleep state to enter
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*
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* RETURN: Status
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*
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* DESCRIPTION: Prepare to enter a system sleep state (see ACPI 2.0 spec p 231)
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* This function must execute with interrupts enabled.
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* We break sleeping into 2 stages so that OSPM can handle
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* various OS-specific tasks between the two steps.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEnterSleepStatePrep (
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UINT8 SleepState)
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{
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ACPI_STATUS Status;
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ACPI_OBJECT_LIST ArgList;
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ACPI_OBJECT Arg;
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ACPI_FUNCTION_TRACE (AcpiEnterSleepStatePrep);
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/* _PSW methods could be run here to enable wake-on keyboard, LAN, etc. */
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Status = AcpiGetSleepTypeData (SleepState,
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&AcpiGbl_SleepTypeA, &AcpiGbl_SleepTypeB);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/* Execute the _PTS method (Prepare To Sleep) */
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ArgList.Count = 1;
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ArgList.Pointer = &Arg;
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Arg.Type = ACPI_TYPE_INTEGER;
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Arg.Integer.Value = SleepState;
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Status = AcpiEvaluateObject (NULL, METHOD_NAME__PTS, &ArgList, NULL);
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if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND)
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{
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return_ACPI_STATUS (Status);
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}
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/* Setup the argument to the _SST method (System STatus) */
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switch (SleepState)
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{
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case ACPI_STATE_S0:
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Arg.Integer.Value = ACPI_SST_WORKING;
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break;
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case ACPI_STATE_S1:
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case ACPI_STATE_S2:
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case ACPI_STATE_S3:
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Arg.Integer.Value = ACPI_SST_SLEEPING;
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break;
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case ACPI_STATE_S4:
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Arg.Integer.Value = ACPI_SST_SLEEP_CONTEXT;
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break;
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default:
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Arg.Integer.Value = ACPI_SST_INDICATOR_OFF; /* Default is off */
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break;
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}
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/*
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* Set the system indicators to show the desired sleep state.
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* _SST is an optional method (return no error if not found)
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*/
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Status = AcpiEvaluateObject (NULL, METHOD_NAME__SST, &ArgList, NULL);
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if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND)
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{
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ACPI_EXCEPTION ((AE_INFO, Status, "While executing method _SST"));
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}
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return_ACPI_STATUS (AE_OK);
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}
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ACPI_EXPORT_SYMBOL (AcpiEnterSleepStatePrep)
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/*******************************************************************************
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*
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* FUNCTION: AcpiEnterSleepState
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*
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* PARAMETERS: SleepState - Which sleep state to enter
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*
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* RETURN: Status
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*
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* DESCRIPTION: Enter a system sleep state
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* THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEnterSleepState (
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UINT8 SleepState)
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{
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UINT32 Pm1aControl;
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UINT32 Pm1bControl;
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ACPI_BIT_REGISTER_INFO *SleepTypeRegInfo;
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ACPI_BIT_REGISTER_INFO *SleepEnableRegInfo;
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UINT32 InValue;
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ACPI_OBJECT_LIST ArgList;
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ACPI_OBJECT Arg;
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UINT32 Retry;
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ACPI_STATUS Status;
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ACPI_FUNCTION_TRACE (AcpiEnterSleepState);
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if ((AcpiGbl_SleepTypeA > ACPI_SLEEP_TYPE_MAX) ||
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(AcpiGbl_SleepTypeB > ACPI_SLEEP_TYPE_MAX))
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{
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ACPI_ERROR ((AE_INFO, "Sleep values out of range: A=0x%X B=0x%X",
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AcpiGbl_SleepTypeA, AcpiGbl_SleepTypeB));
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return_ACPI_STATUS (AE_AML_OPERAND_VALUE);
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}
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SleepTypeRegInfo = AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_TYPE);
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SleepEnableRegInfo = AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_ENABLE);
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/* Clear wake status */
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Status = AcpiWriteBitRegister (ACPI_BITREG_WAKE_STATUS, ACPI_CLEAR_STATUS);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/* Clear all fixed and general purpose status bits */
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Status = AcpiHwClearAcpiStatus ();
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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if (SleepState != ACPI_STATE_S5)
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{
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/*
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* Disable BM arbitration. This feature is contained within an
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* optional register (PM2 Control), so ignore a BAD_ADDRESS
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* exception.
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*/
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Status = AcpiWriteBitRegister (ACPI_BITREG_ARB_DISABLE, 1);
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if (ACPI_FAILURE (Status) && (Status != AE_BAD_ADDRESS))
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{
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return_ACPI_STATUS (Status);
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}
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}
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/*
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* 1) Disable/Clear all GPEs
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* 2) Enable all wakeup GPEs
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*/
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Status = AcpiHwDisableAllGpes ();
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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AcpiGbl_SystemAwakeAndRunning = FALSE;
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Status = AcpiHwEnableAllWakeupGpes ();
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/* Execute the _GTS method (Going To Sleep) */
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ArgList.Count = 1;
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ArgList.Pointer = &Arg;
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Arg.Type = ACPI_TYPE_INTEGER;
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Arg.Integer.Value = SleepState;
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Status = AcpiEvaluateObject (NULL, METHOD_NAME__GTS, &ArgList, NULL);
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if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND)
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{
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return_ACPI_STATUS (Status);
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}
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/* Get current value of PM1A control */
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Status = AcpiHwRegisterRead (ACPI_REGISTER_PM1_CONTROL,
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&Pm1aControl);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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ACPI_DEBUG_PRINT ((ACPI_DB_INIT,
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"Entering sleep state [S%u]\n", SleepState));
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/* Clear the SLP_EN and SLP_TYP fields */
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Pm1aControl &= ~(SleepTypeRegInfo->AccessBitMask |
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SleepEnableRegInfo->AccessBitMask);
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Pm1bControl = Pm1aControl;
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/* Insert the SLP_TYP bits */
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Pm1aControl |= (AcpiGbl_SleepTypeA << SleepTypeRegInfo->BitPosition);
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Pm1bControl |= (AcpiGbl_SleepTypeB << SleepTypeRegInfo->BitPosition);
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/*
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* We split the writes of SLP_TYP and SLP_EN to workaround
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* poorly implemented hardware.
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*/
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/* Write #1: write the SLP_TYP data to the PM1 Control registers */
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Status = AcpiHwWritePm1Control (Pm1aControl, Pm1bControl);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/* Insert the sleep enable (SLP_EN) bit */
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Pm1aControl |= SleepEnableRegInfo->AccessBitMask;
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Pm1bControl |= SleepEnableRegInfo->AccessBitMask;
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/* Flush caches, as per ACPI specification */
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ACPI_FLUSH_CPU_CACHE ();
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/* Write #2: Write both SLP_TYP + SLP_EN */
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Status = AcpiHwWritePm1Control (Pm1aControl, Pm1bControl);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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if (SleepState > ACPI_STATE_S3)
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{
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/*
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* We wanted to sleep > S3, but it didn't happen (by virtue of the
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* fact that we are still executing!)
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*
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* Wait ten seconds, then try again. This is to get S4/S5 to work on
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* all machines.
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*
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* We wait so long to allow chipsets that poll this reg very slowly
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* to still read the right value. Ideally, this block would go
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* away entirely.
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*/
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AcpiOsStall (10000000);
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Status = AcpiHwRegisterWrite (ACPI_REGISTER_PM1_CONTROL,
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SleepEnableRegInfo->AccessBitMask);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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}
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/* Wait until we enter sleep state */
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Retry = 1000;
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do
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{
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Status = AcpiReadBitRegister (ACPI_BITREG_WAKE_STATUS, &InValue);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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if (AcpiGbl_EnableInterpreterSlack)
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{
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/*
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* Some BIOSs don't set WAK_STS at all. Give up waiting after
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* 1000 retries if it still isn't set.
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*/
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if (Retry-- == 0)
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{
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break;
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}
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}
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/* Spin until we wake */
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} while (!InValue);
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return_ACPI_STATUS (AE_OK);
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}
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ACPI_EXPORT_SYMBOL (AcpiEnterSleepState)
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/*******************************************************************************
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*
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* FUNCTION: AcpiEnterSleepStateS4bios
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*
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* PARAMETERS: None
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*
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* RETURN: Status
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*
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* DESCRIPTION: Perform a S4 bios request.
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* THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiEnterSleepStateS4bios (
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void)
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{
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UINT32 InValue;
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ACPI_STATUS Status;
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ACPI_FUNCTION_TRACE (AcpiEnterSleepStateS4bios);
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/* Clear the wake status bit (PM1) */
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Status = AcpiWriteBitRegister (ACPI_BITREG_WAKE_STATUS, ACPI_CLEAR_STATUS);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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Status = AcpiHwClearAcpiStatus ();
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/*
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* 1) Disable/Clear all GPEs
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* 2) Enable all wakeup GPEs
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*/
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Status = AcpiHwDisableAllGpes ();
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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AcpiGbl_SystemAwakeAndRunning = FALSE;
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Status = AcpiHwEnableAllWakeupGpes ();
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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ACPI_FLUSH_CPU_CACHE ();
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Status = AcpiHwWritePort (AcpiGbl_FADT.SmiCommand,
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(UINT32) AcpiGbl_FADT.S4BiosRequest, 8);
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do {
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AcpiOsStall(1000);
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Status = AcpiReadBitRegister (ACPI_BITREG_WAKE_STATUS, &InValue);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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} while (!InValue);
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return_ACPI_STATUS (AE_OK);
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}
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ACPI_EXPORT_SYMBOL (AcpiEnterSleepStateS4bios)
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/*******************************************************************************
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*
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* FUNCTION: AcpiLeaveSleepState
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*
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* PARAMETERS: SleepState - Which sleep state we just exited
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*
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* RETURN: Status
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*
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* DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep
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* Called with interrupts ENABLED.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiLeaveSleepState (
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UINT8 SleepState)
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{
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ACPI_OBJECT_LIST ArgList;
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ACPI_OBJECT Arg;
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ACPI_STATUS Status;
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ACPI_BIT_REGISTER_INFO *SleepTypeRegInfo;
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ACPI_BIT_REGISTER_INFO *SleepEnableRegInfo;
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UINT32 Pm1aControl;
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UINT32 Pm1bControl;
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ACPI_FUNCTION_TRACE (AcpiLeaveSleepState);
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/*
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* Set SLP_TYPE and SLP_EN to state S0.
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* This is unclear from the ACPI Spec, but it is required
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* by some machines.
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*/
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Status = AcpiGetSleepTypeData (ACPI_STATE_S0,
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&AcpiGbl_SleepTypeA, &AcpiGbl_SleepTypeB);
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if (ACPI_SUCCESS (Status))
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{
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SleepTypeRegInfo =
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AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_TYPE);
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SleepEnableRegInfo =
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AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_ENABLE);
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/* Get current value of PM1A control */
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Status = AcpiHwRegisterRead (ACPI_REGISTER_PM1_CONTROL,
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&Pm1aControl);
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if (ACPI_SUCCESS (Status))
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{
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/* Clear the SLP_EN and SLP_TYP fields */
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Pm1aControl &= ~(SleepTypeRegInfo->AccessBitMask |
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SleepEnableRegInfo->AccessBitMask);
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Pm1bControl = Pm1aControl;
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/* Insert the SLP_TYP bits */
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Pm1aControl |= (AcpiGbl_SleepTypeA <<
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SleepTypeRegInfo->BitPosition);
|
|
Pm1bControl |= (AcpiGbl_SleepTypeB <<
|
|
SleepTypeRegInfo->BitPosition);
|
|
|
|
/* Write the control registers and ignore any errors */
|
|
|
|
(void) AcpiHwWritePm1Control (Pm1aControl, Pm1bControl);
|
|
}
|
|
}
|
|
|
|
/* Ensure EnterSleepStatePrep -> EnterSleepState ordering */
|
|
|
|
AcpiGbl_SleepTypeA = ACPI_SLEEP_TYPE_INVALID;
|
|
|
|
/* Setup parameter object */
|
|
|
|
ArgList.Count = 1;
|
|
ArgList.Pointer = &Arg;
|
|
Arg.Type = ACPI_TYPE_INTEGER;
|
|
|
|
/* Ignore any errors from these methods */
|
|
|
|
Arg.Integer.Value = ACPI_SST_WAKING;
|
|
Status = AcpiEvaluateObject (NULL, METHOD_NAME__SST, &ArgList, NULL);
|
|
if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND)
|
|
{
|
|
ACPI_EXCEPTION ((AE_INFO, Status, "During Method _SST"));
|
|
}
|
|
|
|
Arg.Integer.Value = SleepState;
|
|
Status = AcpiEvaluateObject (NULL, METHOD_NAME__BFS, &ArgList, NULL);
|
|
if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND)
|
|
{
|
|
ACPI_EXCEPTION ((AE_INFO, Status, "During Method _BFS"));
|
|
}
|
|
|
|
Status = AcpiEvaluateObject (NULL, METHOD_NAME__WAK, &ArgList, NULL);
|
|
if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND)
|
|
{
|
|
ACPI_EXCEPTION ((AE_INFO, Status, "During Method _WAK"));
|
|
}
|
|
/* TBD: _WAK "sometimes" returns stuff - do we want to look at it? */
|
|
|
|
/*
|
|
* Restore the GPEs:
|
|
* 1) Disable/Clear all GPEs
|
|
* 2) Enable all runtime GPEs
|
|
*/
|
|
Status = AcpiHwDisableAllGpes ();
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
AcpiGbl_SystemAwakeAndRunning = TRUE;
|
|
|
|
Status = AcpiHwEnableAllRuntimeGpes ();
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Enable power button */
|
|
|
|
(void) AcpiWriteBitRegister(
|
|
AcpiGbl_FixedEventInfo[ACPI_EVENT_POWER_BUTTON].EnableRegisterId,
|
|
ACPI_ENABLE_EVENT);
|
|
|
|
(void) AcpiWriteBitRegister(
|
|
AcpiGbl_FixedEventInfo[ACPI_EVENT_POWER_BUTTON].StatusRegisterId,
|
|
ACPI_CLEAR_STATUS);
|
|
|
|
/*
|
|
* Enable BM arbitration. This feature is contained within an
|
|
* optional register (PM2 Control), so ignore a BAD_ADDRESS
|
|
* exception.
|
|
*/
|
|
Status = AcpiWriteBitRegister (ACPI_BITREG_ARB_DISABLE, 0);
|
|
if (ACPI_FAILURE (Status) && (Status != AE_BAD_ADDRESS))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
Arg.Integer.Value = ACPI_SST_WORKING;
|
|
Status = AcpiEvaluateObject (NULL, METHOD_NAME__SST, &ArgList, NULL);
|
|
if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND)
|
|
{
|
|
ACPI_EXCEPTION ((AE_INFO, Status, "During Method _SST"));
|
|
}
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiLeaveSleepState)
|
|
|