/****************************************************************************** * * Name: hwxfsleep.c - ACPI Hardware Sleep/Wake External Interfaces * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2021, Intel Corp. * All rights reserved. * * 2. License * * 2.1. This is your license from Intel Corp. under its intellectual property * rights. You may have additional license terms from the party that provided * you this software, covering your right to use that party's intellectual * property rights. * * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a * copy of the source code appearing in this file ("Covered Code") an * irrevocable, perpetual, worldwide license under Intel's copyrights in the * base code distributed originally by Intel ("Original Intel Code") to copy, * make derivatives, distribute, use and display any portion of the Covered * Code in any form, with the right to sublicense such rights; and * * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent * license (with the right to sublicense), under only those claims of Intel * patents that are infringed by the Original Intel Code, to make, use, sell, * offer to sell, and import the Covered Code and derivative works thereof * solely to the minimum extent necessary to exercise the above copyright * license, and in no event shall the patent license extend to any additions * to or modifications of the Original Intel Code. No other license or right * is granted directly or by implication, estoppel or otherwise; * * The above copyright and patent license is granted only if the following * conditions are met: * * 3. Conditions * * 3.1. Redistribution of Source with Rights to Further Distribute Source. * Redistribution of source code of any substantial portion of the Covered * Code or modification with rights to further distribute source must include * the above Copyright Notice, the above License, this list of Conditions, * and the following Disclaimer and Export Compliance provision. In addition, * Licensee must cause all Covered Code to which Licensee contributes to * contain a file documenting the changes Licensee made to create that Covered * Code and the date of any change. Licensee must include in that file the * documentation of any changes made by any predecessor Licensee. Licensee * must include a prominent statement that the modification is derived, * directly or indirectly, from Original Intel Code. * * 3.2. Redistribution of Source with no Rights to Further Distribute Source. * Redistribution of source code of any substantial portion of the Covered * Code or modification without rights to further distribute source must * include the following Disclaimer and Export Compliance provision in the * documentation and/or other materials provided with distribution. In * addition, Licensee may not authorize further sublicense of source of any * portion of the Covered Code, and must include terms to the effect that the * license from Licensee to its licensee is limited to the intellectual * property embodied in the software Licensee provides to its licensee, and * not to intellectual property embodied in modifications its licensee may * make. * * 3.3. Redistribution of Executable. Redistribution in executable form of any * substantial portion of the Covered Code or modification must reproduce the * above Copyright Notice, and the following Disclaimer and Export Compliance * provision in the documentation and/or other materials provided with the * distribution. * * 3.4. Intel retains all right, title, and interest in and to the Original * Intel Code. * * 3.5. Neither the name Intel nor any other trademark owned or controlled by * Intel shall be used in advertising or otherwise to promote the sale, use or * other dealings in products derived from or relating to the Covered Code * without prior written authorization from Intel. * * 4. Disclaimer and Export Compliance * * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A * PARTICULAR PURPOSE. * * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY * LIMITED REMEDY. * * 4.3. Licensee shall not export, either directly or indirectly, any of this * software or system incorporating such software without first obtaining any * required license or other approval from the U. S. Department of Commerce or * any other agency or department of the United States Government. In the * event Licensee exports any such software from the United States or * re-exports any such software from a foreign destination, Licensee shall * ensure that the distribution and export/re-export of the software is in * compliance with all laws, regulations, orders, or other restrictions of the * U.S. Export Administration Regulations. Licensee agrees that neither it nor * any of its subsidiaries will export/re-export any technical data, process, * software, or service, directly or indirectly, to any country for which the * United States government or any agency thereof requires an export license, * other governmental approval, or letter of assurance, without first obtaining * such license, approval or letter. * ***************************************************************************** * * Alternatively, you may choose to be licensed under the terms of the * following license: * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce at minimum a disclaimer * substantially similar to the "NO WARRANTY" disclaimer below * ("Disclaimer") and any redistribution must be conditioned upon * including a substantially similar Disclaimer requirement for further * binary redistribution. * 3. Neither the names of the above-listed copyright holders nor the names * of any contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * Alternatively, you may choose to be licensed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * *****************************************************************************/ #define EXPORT_ACPI_INTERFACES #include "acpi.h" #include "accommon.h" #define _COMPONENT ACPI_HARDWARE ACPI_MODULE_NAME ("hwxfsleep") /* Local prototypes */ #if (!ACPI_REDUCED_HARDWARE) static ACPI_STATUS AcpiHwSetFirmwareWakingVector ( ACPI_TABLE_FACS *Facs, ACPI_PHYSICAL_ADDRESS PhysicalAddress, ACPI_PHYSICAL_ADDRESS PhysicalAddress64); #endif static ACPI_STATUS AcpiHwSleepDispatch ( UINT8 SleepState, UINT32 FunctionId); /* * Dispatch table used to efficiently branch to the various sleep * functions. */ #define ACPI_SLEEP_FUNCTION_ID 0 #define ACPI_WAKE_PREP_FUNCTION_ID 1 #define ACPI_WAKE_FUNCTION_ID 2 /* Legacy functions are optional, based upon ACPI_REDUCED_HARDWARE */ static ACPI_SLEEP_FUNCTIONS AcpiSleepDispatch[] = { {ACPI_STRUCT_INIT (LegacyFunction, ACPI_HW_OPTIONAL_FUNCTION (AcpiHwLegacySleep)), ACPI_STRUCT_INIT (ExtendedFunction, AcpiHwExtendedSleep) }, {ACPI_STRUCT_INIT (LegacyFunction, ACPI_HW_OPTIONAL_FUNCTION (AcpiHwLegacyWakePrep)), ACPI_STRUCT_INIT (ExtendedFunction, AcpiHwExtendedWakePrep) }, {ACPI_STRUCT_INIT (LegacyFunction, ACPI_HW_OPTIONAL_FUNCTION (AcpiHwLegacyWake)), ACPI_STRUCT_INIT (ExtendedFunction, AcpiHwExtendedWake) } }; /* * These functions are removed for the ACPI_REDUCED_HARDWARE case: * AcpiSetFirmwareWakingVector * AcpiEnterSleepStateS4bios */ #if (!ACPI_REDUCED_HARDWARE) /******************************************************************************* * * FUNCTION: AcpiHwSetFirmwareWakingVector * * PARAMETERS: Facs - Pointer to FACS table * PhysicalAddress - 32-bit physical address of ACPI real mode * entry point * PhysicalAddress64 - 64-bit physical address of ACPI protected * mode entry point * * RETURN: Status * * DESCRIPTION: Sets the FirmwareWakingVector fields of the FACS * ******************************************************************************/ static ACPI_STATUS AcpiHwSetFirmwareWakingVector ( ACPI_TABLE_FACS *Facs, ACPI_PHYSICAL_ADDRESS PhysicalAddress, ACPI_PHYSICAL_ADDRESS PhysicalAddress64) { ACPI_FUNCTION_TRACE (AcpiHwSetFirmwareWakingVector); /* * According to the ACPI specification 2.0c and later, the 64-bit * waking vector should be cleared and the 32-bit waking vector should * be used, unless we want the wake-up code to be called by the BIOS in * Protected Mode. Some systems (for example HP dv5-1004nr) are known * to fail to resume if the 64-bit vector is used. */ /* Set the 32-bit vector */ Facs->FirmwareWakingVector = (UINT32) PhysicalAddress; if (Facs->Length > 32) { if (Facs->Version >= 1) { /* Set the 64-bit vector */ Facs->XFirmwareWakingVector = PhysicalAddress64; } else { /* Clear the 64-bit vector if it exists */ Facs->XFirmwareWakingVector = 0; } } return_ACPI_STATUS (AE_OK); } /******************************************************************************* * * FUNCTION: AcpiSetFirmwareWakingVector * * PARAMETERS: PhysicalAddress - 32-bit physical address of ACPI real mode * entry point * PhysicalAddress64 - 64-bit physical address of ACPI protected * mode entry point * * RETURN: Status * * DESCRIPTION: Sets the FirmwareWakingVector fields of the FACS * ******************************************************************************/ ACPI_STATUS AcpiSetFirmwareWakingVector ( ACPI_PHYSICAL_ADDRESS PhysicalAddress, ACPI_PHYSICAL_ADDRESS PhysicalAddress64) { ACPI_FUNCTION_TRACE (AcpiSetFirmwareWakingVector); if (AcpiGbl_FACS) { (void) AcpiHwSetFirmwareWakingVector (AcpiGbl_FACS, PhysicalAddress, PhysicalAddress64); } return_ACPI_STATUS (AE_OK); } ACPI_EXPORT_SYMBOL (AcpiSetFirmwareWakingVector) /******************************************************************************* * * FUNCTION: AcpiEnterSleepStateS4bios * * PARAMETERS: None * * RETURN: Status * * DESCRIPTION: Perform a S4 bios request. * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED * ******************************************************************************/ ACPI_STATUS AcpiEnterSleepStateS4bios ( void) { UINT32 InValue; ACPI_STATUS Status; ACPI_FUNCTION_TRACE (AcpiEnterSleepStateS4bios); /* Clear the wake status bit (PM1) */ Status = AcpiWriteBitRegister (ACPI_BITREG_WAKE_STATUS, ACPI_CLEAR_STATUS); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } Status = AcpiHwClearAcpiStatus (); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* * 1) Disable all GPEs * 2) Enable all wakeup GPEs */ Status = AcpiHwDisableAllGpes (); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } AcpiGbl_SystemAwakeAndRunning = FALSE; Status = AcpiHwEnableAllWakeupGpes (); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } ACPI_FLUSH_CPU_CACHE (); Status = AcpiHwWritePort (AcpiGbl_FADT.SmiCommand, (UINT32) AcpiGbl_FADT.S4BiosRequest, 8); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } do { AcpiOsStall (ACPI_USEC_PER_MSEC); Status = AcpiReadBitRegister (ACPI_BITREG_WAKE_STATUS, &InValue); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } while (!InValue); return_ACPI_STATUS (AE_OK); } ACPI_EXPORT_SYMBOL (AcpiEnterSleepStateS4bios) #endif /* !ACPI_REDUCED_HARDWARE */ /******************************************************************************* * * FUNCTION: AcpiHwSleepDispatch * * PARAMETERS: SleepState - Which sleep state to enter/exit * FunctionId - Sleep, WakePrep, or Wake * * RETURN: Status from the invoked sleep handling function. * * DESCRIPTION: Dispatch a sleep/wake request to the appropriate handling * function. * ******************************************************************************/ static ACPI_STATUS AcpiHwSleepDispatch ( UINT8 SleepState, UINT32 FunctionId) { ACPI_STATUS Status; ACPI_SLEEP_FUNCTIONS *SleepFunctions = &AcpiSleepDispatch[FunctionId]; #if (!ACPI_REDUCED_HARDWARE) /* * If the Hardware Reduced flag is set (from the FADT), we must * use the extended sleep registers (FADT). Note: As per the ACPI * specification, these extended registers are to be used for HW-reduced * platforms only. They are not general-purpose replacements for the * legacy PM register sleep support. */ if (AcpiGbl_ReducedHardware) { Status = SleepFunctions->ExtendedFunction (SleepState); } else { /* Legacy sleep */ Status = SleepFunctions->LegacyFunction (SleepState); } return (Status); #else /* * For the case where reduced-hardware-only code is being generated, * we know that only the extended sleep registers are available */ Status = SleepFunctions->ExtendedFunction (SleepState); return (Status); #endif /* !ACPI_REDUCED_HARDWARE */ } /******************************************************************************* * * FUNCTION: AcpiEnterSleepStatePrep * * PARAMETERS: SleepState - Which sleep state to enter * * RETURN: Status * * DESCRIPTION: Prepare to enter a system sleep state. * This function must execute with interrupts enabled. * We break sleeping into 2 stages so that OSPM can handle * various OS-specific tasks between the two steps. * ******************************************************************************/ ACPI_STATUS AcpiEnterSleepStatePrep ( UINT8 SleepState) { ACPI_STATUS Status; ACPI_OBJECT_LIST ArgList; ACPI_OBJECT Arg; UINT32 SstValue; ACPI_FUNCTION_TRACE (AcpiEnterSleepStatePrep); Status = AcpiGetSleepTypeData (SleepState, &AcpiGbl_SleepTypeA, &AcpiGbl_SleepTypeB); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } /* Execute the _PTS method (Prepare To Sleep) */ ArgList.Count = 1; ArgList.Pointer = &Arg; Arg.Type = ACPI_TYPE_INTEGER; Arg.Integer.Value = SleepState; Status = AcpiEvaluateObject (NULL, METHOD_PATHNAME__PTS, &ArgList, NULL); if (ACPI_FAILURE (Status) && Status != AE_NOT_FOUND) { return_ACPI_STATUS (Status); } /* Setup the argument to the _SST method (System STatus) */ switch (SleepState) { case ACPI_STATE_S0: SstValue = ACPI_SST_WORKING; break; case ACPI_STATE_S1: case ACPI_STATE_S2: case ACPI_STATE_S3: SstValue = ACPI_SST_SLEEPING; break; case ACPI_STATE_S4: SstValue = ACPI_SST_SLEEP_CONTEXT; break; default: SstValue = ACPI_SST_INDICATOR_OFF; /* Default is off */ break; } /* * Set the system indicators to show the desired sleep state. * _SST is an optional method (return no error if not found) */ AcpiHwExecuteSleepMethod (METHOD_PATHNAME__SST, SstValue); return_ACPI_STATUS (AE_OK); } ACPI_EXPORT_SYMBOL (AcpiEnterSleepStatePrep) /******************************************************************************* * * FUNCTION: AcpiEnterSleepState * * PARAMETERS: SleepState - Which sleep state to enter * * RETURN: Status * * DESCRIPTION: Enter a system sleep state * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED * ******************************************************************************/ ACPI_STATUS AcpiEnterSleepState ( UINT8 SleepState) { ACPI_STATUS Status; ACPI_FUNCTION_TRACE (AcpiEnterSleepState); if ((AcpiGbl_SleepTypeA > ACPI_SLEEP_TYPE_MAX) || (AcpiGbl_SleepTypeB > ACPI_SLEEP_TYPE_MAX)) { ACPI_ERROR ((AE_INFO, "Sleep values out of range: A=0x%X B=0x%X", AcpiGbl_SleepTypeA, AcpiGbl_SleepTypeB)); return_ACPI_STATUS (AE_AML_OPERAND_VALUE); } Status = AcpiHwSleepDispatch (SleepState, ACPI_SLEEP_FUNCTION_ID); return_ACPI_STATUS (Status); } ACPI_EXPORT_SYMBOL (AcpiEnterSleepState) /******************************************************************************* * * FUNCTION: AcpiLeaveSleepStatePrep * * PARAMETERS: SleepState - Which sleep state we are exiting * * RETURN: Status * * DESCRIPTION: Perform the first state of OS-independent ACPI cleanup after a * sleep. Called with interrupts DISABLED. * We break wake/resume into 2 stages so that OSPM can handle * various OS-specific tasks between the two steps. * ******************************************************************************/ ACPI_STATUS AcpiLeaveSleepStatePrep ( UINT8 SleepState) { ACPI_STATUS Status; ACPI_FUNCTION_TRACE (AcpiLeaveSleepStatePrep); Status = AcpiHwSleepDispatch (SleepState, ACPI_WAKE_PREP_FUNCTION_ID); return_ACPI_STATUS (Status); } ACPI_EXPORT_SYMBOL (AcpiLeaveSleepStatePrep) /******************************************************************************* * * FUNCTION: AcpiLeaveSleepState * * PARAMETERS: SleepState - Which sleep state we are exiting * * RETURN: Status * * DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep * Called with interrupts ENABLED. * ******************************************************************************/ ACPI_STATUS AcpiLeaveSleepState ( UINT8 SleepState) { ACPI_STATUS Status; ACPI_FUNCTION_TRACE (AcpiLeaveSleepState); Status = AcpiHwSleepDispatch (SleepState, ACPI_WAKE_FUNCTION_ID); return_ACPI_STATUS (Status); } ACPI_EXPORT_SYMBOL (AcpiLeaveSleepState)