296 lines
11 KiB
C
296 lines
11 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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* $Revision: 7 $
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*
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*****************************************************************************/
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/******************************************************************************
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*
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* 1. Copyright Notice
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*
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* Some or all of this work - Copyright (c) 1999, 2000, 2001, Intel Corp.
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* All rights reserved.
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*
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* 2. License
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*
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* 2.1. This is your license from Intel Corp. under its intellectual property
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* rights. You may have additional license terms from the party that provided
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* you this software, covering your right to use that party's intellectual
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* property rights.
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*
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* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
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* copy of the source code appearing in this file ("Covered Code") an
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* irrevocable, perpetual, worldwide license under Intel's copyrights in the
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* base code distributed originally by Intel ("Original Intel Code") to copy,
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* make derivatives, distribute, use and display any portion of the Covered
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* Code in any form, with the right to sublicense such rights; and
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*
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* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
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* license (with the right to sublicense), under only those claims of Intel
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* patents that are infringed by the Original Intel Code, to make, use, sell,
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* offer to sell, and import the Covered Code and derivative works thereof
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* solely to the minimum extent necessary to exercise the above copyright
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* license, and in no event shall the patent license extend to any additions
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* to or modifications of the Original Intel Code. No other license or right
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* is granted directly or by implication, estoppel or otherwise;
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*
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* The above copyright and patent license is granted only if the following
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* conditions are met:
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*
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* 3. Conditions
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*
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* 3.1. Redistribution of Source with Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification with rights to further distribute source must include
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* the above Copyright Notice, the above License, this list of Conditions,
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* and the following Disclaimer and Export Compliance provision. In addition,
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* Licensee must cause all Covered Code to which Licensee contributes to
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* contain a file documenting the changes Licensee made to create that Covered
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* Code and the date of any change. Licensee must include in that file the
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* documentation of any changes made by any predecessor Licensee. Licensee
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* must include a prominent statement that the modification is derived,
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* directly or indirectly, from Original Intel Code.
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*
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* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification without rights to further distribute source must
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* include the following Disclaimer and Export Compliance provision in the
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* documentation and/or other materials provided with distribution. In
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* addition, Licensee may not authorize further sublicense of source of any
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* portion of the Covered Code, and must include terms to the effect that the
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* license from Licensee to its licensee is limited to the intellectual
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* property embodied in the software Licensee provides to its licensee, and
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* not to intellectual property embodied in modifications its licensee may
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* make.
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*
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* 3.3. Redistribution of Executable. Redistribution in executable form of any
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* substantial portion of the Covered Code or modification must reproduce the
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* above Copyright Notice, and the following Disclaimer and Export Compliance
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* provision in the documentation and/or other materials provided with the
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* distribution.
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*
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* 3.4. Intel retains all right, title, and interest in and to the Original
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* Intel Code.
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*
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* 3.5. Neither the name Intel nor any other trademark owned or controlled by
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* Intel shall be used in advertising or otherwise to promote the sale, use or
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* other dealings in products derived from or relating to the Covered Code
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* without prior written authorization from Intel.
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*
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* 4. Disclaimer and Export Compliance
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*
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* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
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* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
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* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
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* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
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* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
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* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
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* PARTICULAR PURPOSE.
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*
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* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
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* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
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* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
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* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
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* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
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* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
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* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
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* LIMITED REMEDY.
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*
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* 4.3. Licensee shall not export, either directly or indirectly, any of this
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* software or system incorporating such software without first obtaining any
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* required license or other approval from the U. S. Department of Commerce or
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* any other agency or department of the United States Government. In the
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* event Licensee exports any such software from the United States or
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* re-exports any such software from a foreign destination, Licensee shall
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* ensure that the distribution and export/re-export of the software is in
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* compliance with all laws, regulations, orders, or other restrictions of the
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* U.S. Export Administration Regulations. Licensee agrees that neither it nor
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* any of its subsidiaries will export/re-export any technical data, process,
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* software, or service, directly or indirectly, to any country for which the
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* United States government or any agency thereof requires an export license,
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* other governmental approval, or letter of assurance, without first obtaining
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* such license, approval or letter.
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*
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*****************************************************************************/
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#include "acpi.h"
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#include "acnamesp.h"
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#include "achware.h"
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#define _COMPONENT HARDWARE
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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 - Physical address of ACPI real mode
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* entry point.
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*
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* RETURN: AE_OK or AE_ERROR
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*
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* DESCRIPTION: Access function for dFirmwareWakingVector field in FACS
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiSetFirmwareWakingVector (
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ACPI_PHYSICAL_ADDRESS PhysicalAddress)
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{
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FUNCTION_TRACE ("AcpiSetFirmwareWakingVector");
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/* Make sure that we have an FACS */
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if (!AcpiGbl_FACS)
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{
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return_ACPI_STATUS (AE_NO_ACPI_TABLES);
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}
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/* Set the vector */
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if (AcpiGbl_FACS->VectorWidth == 32)
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{
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* (UINT32 *) AcpiGbl_FACS->FirmwareWakingVector = (UINT32) PhysicalAddress;
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}
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else
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{
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*AcpiGbl_FACS->FirmwareWakingVector = PhysicalAddress;
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}
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return_ACPI_STATUS (AE_OK);
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}
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/******************************************************************************
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*
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* FUNCTION: AcpiGetFirmwareWakingVector
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*
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* PARAMETERS: *PhysicalAddress - Output buffer where contents of
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* the FirmwareWakingVector field of
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* the FACS will be stored.
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*
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* RETURN: Status
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*
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* DESCRIPTION: Access function for dFirmwareWakingVector field in FACS
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiGetFirmwareWakingVector (
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ACPI_PHYSICAL_ADDRESS *PhysicalAddress)
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{
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FUNCTION_TRACE ("AcpiGetFirmwareWakingVector");
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if (!PhysicalAddress)
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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/* Make sure that we have an FACS */
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if (!AcpiGbl_FACS)
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{
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return_ACPI_STATUS (AE_NO_ACPI_TABLES);
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}
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/* Get the vector */
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if (AcpiGbl_FACS->VectorWidth == 32)
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{
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*PhysicalAddress = * (UINT32 *) AcpiGbl_FACS->FirmwareWakingVector;
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}
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else
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{
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*PhysicalAddress = *AcpiGbl_FACS->FirmwareWakingVector;
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}
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return_ACPI_STATUS (AE_OK);
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}
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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 (see ACPI 2.0 spec p 231)
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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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ACPI_STATUS Status;
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ACPI_OBJECT_LIST ArgList;
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ACPI_OBJECT Arg;
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UINT8 TypeA;
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UINT8 TypeB;
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UINT16 PM1AControl;
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UINT16 PM1BControl;
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FUNCTION_TRACE ("AcpiEnterSleepState");
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/*
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* _PSW methods could be run here to enable wake-on keyboard, LAN, etc.
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*/
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Status = AcpiHwObtainSleepTypeRegisterData(SleepState, &TypeA, &TypeB);
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if (!ACPI_SUCCESS(Status))
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{
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return Status;
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}
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/* run the _PTS and _GTS methods */
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MEMSET(&ArgList, 0, sizeof(ArgList));
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ArgList.Count = 1;
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ArgList.Pointer = &Arg;
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MEMSET(&Arg, 0, sizeof(Arg));
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Arg.Type = ACPI_TYPE_INTEGER;
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Arg.Integer.Value = SleepState;
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AcpiEvaluateObject(NULL, "\\_PTS", &ArgList, NULL);
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AcpiEvaluateObject(NULL, "\\_GTS", &ArgList, NULL);
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/* clear wake status */
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AcpiHwRegisterBitAccess(ACPI_WRITE, ACPI_MTX_LOCK, WAK_STS, 1);
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PM1AControl = (UINT16) AcpiHwRegisterRead(ACPI_MTX_LOCK, PM1_CONTROL);
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/* mask off SLP_EN and SLP_TYP fields */
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PM1AControl &= 0xC3FF;
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/* mask in SLP_EN */
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PM1AControl |= (1 << AcpiHwGetBitShift (SLP_EN_MASK));
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PM1BControl = PM1AControl;
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/* mask in SLP_TYP */
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PM1AControl |= (TypeA << AcpiHwGetBitShift (SLP_TYPE_X_MASK));
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PM1BControl |= (TypeB << AcpiHwGetBitShift (SLP_TYPE_X_MASK));
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DEBUG_PRINT(ACPI_OK, ("Entering S%d\n", SleepState));
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disable();
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AcpiHwRegisterWrite(ACPI_MTX_LOCK, PM1A_CONTROL, PM1AControl);
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AcpiHwRegisterWrite(ACPI_MTX_LOCK, PM1B_CONTROL, PM1BControl);
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AcpiHwRegisterWrite(ACPI_MTX_LOCK, PM1_CONTROL,
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(1 << AcpiHwGetBitShift (SLP_EN_MASK)));
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enable();
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return_ACPI_STATUS (AE_OK);
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}
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