979 lines
30 KiB
C
979 lines
30 KiB
C
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/*******************************************************************************
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*
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* Module Name: hwregs - Read/write access functions for the various ACPI
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* control and status registers.
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* $Revision: 149 $
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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 - 2003, 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
|
|
* Code or modification with rights to further distribute source must include
|
|
* 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,
|
|
* 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.
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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
|
|
* 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
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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
|
|
* 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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#define __HWREGS_C__
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#include "acpi.h"
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#include "acnamesp.h"
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#include "acevents.h"
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#define _COMPONENT ACPI_HARDWARE
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ACPI_MODULE_NAME ("hwregs")
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/*******************************************************************************
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*
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* FUNCTION: AcpiHwClearAcpiStatus
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*
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* PARAMETERS: Flags - Lock the hardware or not
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*
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* RETURN: none
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*
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* DESCRIPTION: Clears all fixed and general purpose status bits
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiHwClearAcpiStatus (
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UINT32 Flags)
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{
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ACPI_STATUS Status;
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ACPI_FUNCTION_TRACE ("HwClearAcpiStatus");
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ACPI_DEBUG_PRINT ((ACPI_DB_IO, "About to write %04X to %04X\n",
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ACPI_BITMASK_ALL_FIXED_STATUS,
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(UINT16) ACPI_GET_ADDRESS (AcpiGbl_FADT->XPm1aEvtBlk.Address)));
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if (Flags & ACPI_MTX_LOCK)
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{
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Status = AcpiUtAcquireMutex (ACPI_MTX_HARDWARE);
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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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Status = AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK, ACPI_REGISTER_PM1_STATUS,
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ACPI_BITMASK_ALL_FIXED_STATUS);
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if (ACPI_FAILURE (Status))
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{
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goto UnlockAndExit;
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}
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/* Clear the fixed events */
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if (ACPI_VALID_ADDRESS (AcpiGbl_FADT->XPm1bEvtBlk.Address))
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{
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Status = AcpiHwLowLevelWrite (16, ACPI_BITMASK_ALL_FIXED_STATUS,
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&AcpiGbl_FADT->XPm1bEvtBlk);
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if (ACPI_FAILURE (Status))
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{
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goto UnlockAndExit;
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}
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}
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/* Clear the GPE Bits in all GPE registers in all GPE blocks */
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Status = AcpiEvWalkGpeList (AcpiHwClearGpeBlock);
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UnlockAndExit:
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if (Flags & ACPI_MTX_LOCK)
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{
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(void) AcpiUtReleaseMutex (ACPI_MTX_HARDWARE);
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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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* FUNCTION: AcpiGetSleepTypeData
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*
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* PARAMETERS: SleepState - Numeric sleep state
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* *SleepTypeA - Where SLP_TYPa is returned
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* *SleepTypeB - Where SLP_TYPb is returned
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*
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* RETURN: Status - ACPI status
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*
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* DESCRIPTION: Obtain the SLP_TYPa and SLP_TYPb values for the requested sleep
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* state.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiGetSleepTypeData (
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UINT8 SleepState,
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UINT8 *SleepTypeA,
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UINT8 *SleepTypeB)
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{
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ACPI_STATUS Status = AE_OK;
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ACPI_OPERAND_OBJECT *ObjDesc;
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ACPI_FUNCTION_TRACE ("AcpiGetSleepTypeData");
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/*
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* Validate parameters
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*/
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if ((SleepState > ACPI_S_STATES_MAX) ||
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!SleepTypeA || !SleepTypeB)
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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/*
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* Evaluate the namespace object containing the values for this state
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*/
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Status = AcpiNsEvaluateByName ((char *) AcpiGbl_DbSleepStates[SleepState],
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NULL, &ObjDesc);
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if (ACPI_FAILURE (Status))
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "%s while evaluating SleepState [%s]\n",
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AcpiFormatException (Status), AcpiGbl_DbSleepStates[SleepState]));
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return_ACPI_STATUS (Status);
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}
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/* Must have a return object */
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if (!ObjDesc)
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{
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ACPI_REPORT_ERROR (("Missing Sleep State object\n"));
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Status = AE_NOT_EXIST;
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}
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/* It must be of type Package */
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else if (ACPI_GET_OBJECT_TYPE (ObjDesc) != ACPI_TYPE_PACKAGE)
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{
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ACPI_REPORT_ERROR (("Sleep State object not a Package\n"));
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Status = AE_AML_OPERAND_TYPE;
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}
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/* The package must have at least two elements */
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else if (ObjDesc->Package.Count < 2)
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{
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ACPI_REPORT_ERROR (("Sleep State package does not have at least two elements\n"));
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Status = AE_AML_NO_OPERAND;
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}
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/* The first two elements must both be of type Integer */
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else if ((ACPI_GET_OBJECT_TYPE (ObjDesc->Package.Elements[0]) != ACPI_TYPE_INTEGER) ||
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(ACPI_GET_OBJECT_TYPE (ObjDesc->Package.Elements[1]) != ACPI_TYPE_INTEGER))
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{
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ACPI_REPORT_ERROR (("Sleep State package elements are not both Integers (%s, %s)\n",
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AcpiUtGetObjectTypeName (ObjDesc->Package.Elements[0]),
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AcpiUtGetObjectTypeName (ObjDesc->Package.Elements[1])));
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Status = AE_AML_OPERAND_TYPE;
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}
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else
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{
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/*
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* Valid _Sx_ package size, type, and value
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*/
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*SleepTypeA = (UINT8) (ObjDesc->Package.Elements[0])->Integer.Value;
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*SleepTypeB = (UINT8) (ObjDesc->Package.Elements[1])->Integer.Value;
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}
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if (ACPI_FAILURE (Status))
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "While evaluating SleepState [%s], bad Sleep object %p type %s\n",
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AcpiGbl_DbSleepStates[SleepState], ObjDesc, AcpiUtGetObjectTypeName (ObjDesc)));
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}
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|
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AcpiUtRemoveReference (ObjDesc);
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return_ACPI_STATUS (Status);
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}
|
|
|
|
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/*******************************************************************************
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*
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* FUNCTION: AcpiHwGetRegisterBitMask
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*
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* PARAMETERS: RegisterId - Index of ACPI Register to access
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*
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* RETURN: The bit mask to be used when accessing the register
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*
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* DESCRIPTION: Map RegisterId into a register bit mask.
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*
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******************************************************************************/
|
|
|
|
ACPI_BIT_REGISTER_INFO *
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AcpiHwGetBitRegisterInfo (
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UINT32 RegisterId)
|
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{
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ACPI_FUNCTION_NAME ("HwGetBitRegisterInfo");
|
|
|
|
|
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if (RegisterId > ACPI_BITREG_MAX)
|
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{
|
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Invalid BitRegister ID: %X\n", RegisterId));
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return (NULL);
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}
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return (&AcpiGbl_BitRegisterInfo[RegisterId]);
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}
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|
|
|
|
/*******************************************************************************
|
|
*
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* FUNCTION: AcpiGetRegister
|
|
*
|
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* PARAMETERS: RegisterId - ID of ACPI BitRegister to access
|
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* ReturnValue - Value that was read from the register
|
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* Flags - Lock the hardware or not
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*
|
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* RETURN: Value is read from specified Register. Value returned is
|
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* normalized to bit0 (is shifted all the way right)
|
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*
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* DESCRIPTION: ACPI BitRegister read function.
|
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*
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******************************************************************************/
|
|
|
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ACPI_STATUS
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AcpiGetRegister (
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UINT32 RegisterId,
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UINT32 *ReturnValue,
|
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UINT32 Flags)
|
|
{
|
|
UINT32 RegisterValue = 0;
|
|
ACPI_BIT_REGISTER_INFO *BitRegInfo;
|
|
ACPI_STATUS Status;
|
|
|
|
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ACPI_FUNCTION_TRACE ("AcpiGetRegister");
|
|
|
|
|
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/* Get the info structure corresponding to the requested ACPI Register */
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|
|
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BitRegInfo = AcpiHwGetBitRegisterInfo (RegisterId);
|
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if (!BitRegInfo)
|
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
|
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}
|
|
|
|
if (Flags & ACPI_MTX_LOCK)
|
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{
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_HARDWARE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
}
|
|
|
|
Status = AcpiHwRegisterRead (ACPI_MTX_DO_NOT_LOCK,
|
|
BitRegInfo->ParentRegister, &RegisterValue);
|
|
|
|
if (Flags & ACPI_MTX_LOCK)
|
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{
|
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(void) AcpiUtReleaseMutex (ACPI_MTX_HARDWARE);
|
|
}
|
|
|
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if (ACPI_SUCCESS (Status))
|
|
{
|
|
/* Normalize the value that was read */
|
|
|
|
RegisterValue = ((RegisterValue & BitRegInfo->AccessBitMask)
|
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>> BitRegInfo->BitPosition);
|
|
|
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*ReturnValue = RegisterValue;
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_IO, "Read value %8.8X register %X\n",
|
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RegisterValue, BitRegInfo->ParentRegister));
|
|
}
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
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* FUNCTION: AcpiSetRegister
|
|
*
|
|
* PARAMETERS: RegisterId - ID of ACPI BitRegister to access
|
|
* Value - (only used on write) value to write to the
|
|
* Register, NOT pre-normalized to the bit pos.
|
|
* Flags - Lock the hardware or not
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: ACPI Bit Register write function.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
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AcpiSetRegister (
|
|
UINT32 RegisterId,
|
|
UINT32 Value,
|
|
UINT32 Flags)
|
|
{
|
|
UINT32 RegisterValue = 0;
|
|
ACPI_BIT_REGISTER_INFO *BitRegInfo;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_U32 ("AcpiSetRegister", RegisterId);
|
|
|
|
|
|
/* Get the info structure corresponding to the requested ACPI Register */
|
|
|
|
BitRegInfo = AcpiHwGetBitRegisterInfo (RegisterId);
|
|
if (!BitRegInfo)
|
|
{
|
|
ACPI_REPORT_ERROR (("Bad ACPI HW RegisterId: %X\n", RegisterId));
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
if (Flags & ACPI_MTX_LOCK)
|
|
{
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_HARDWARE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
}
|
|
|
|
/* Always do a register read first so we can insert the new bits */
|
|
|
|
Status = AcpiHwRegisterRead (ACPI_MTX_DO_NOT_LOCK,
|
|
BitRegInfo->ParentRegister, &RegisterValue);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/*
|
|
* Decode the Register ID
|
|
* Register id = Register block id | bit id
|
|
*
|
|
* Check bit id to fine locate Register offset.
|
|
* Check Mask to determine Register offset, and then read-write.
|
|
*/
|
|
switch (BitRegInfo->ParentRegister)
|
|
{
|
|
case ACPI_REGISTER_PM1_STATUS:
|
|
|
|
/*
|
|
* Status Registers are different from the rest. Clear by
|
|
* writing 1, writing 0 has no effect. So, the only relevant
|
|
* information is the single bit we're interested in, all others should
|
|
* be written as 0 so they will be left unchanged
|
|
*/
|
|
Value = ACPI_REGISTER_PREPARE_BITS (Value,
|
|
BitRegInfo->BitPosition, BitRegInfo->AccessBitMask);
|
|
if (Value)
|
|
{
|
|
Status = AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK,
|
|
ACPI_REGISTER_PM1_STATUS, (UINT16) Value);
|
|
RegisterValue = 0;
|
|
}
|
|
break;
|
|
|
|
|
|
case ACPI_REGISTER_PM1_ENABLE:
|
|
|
|
ACPI_REGISTER_INSERT_VALUE (RegisterValue, BitRegInfo->BitPosition,
|
|
BitRegInfo->AccessBitMask, Value);
|
|
|
|
Status = AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK,
|
|
ACPI_REGISTER_PM1_ENABLE, (UINT16) RegisterValue);
|
|
break;
|
|
|
|
|
|
case ACPI_REGISTER_PM1_CONTROL:
|
|
|
|
/*
|
|
* Read the PM1 Control register.
|
|
* Note that at this level, the fact that there are actually TWO
|
|
* registers (A and B - and that B may not exist) is abstracted.
|
|
*/
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_IO, "PM1 control: Read %X\n", RegisterValue));
|
|
|
|
ACPI_REGISTER_INSERT_VALUE (RegisterValue, BitRegInfo->BitPosition,
|
|
BitRegInfo->AccessBitMask, Value);
|
|
|
|
Status = AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK,
|
|
ACPI_REGISTER_PM1_CONTROL, (UINT16) RegisterValue);
|
|
break;
|
|
|
|
|
|
case ACPI_REGISTER_PM2_CONTROL:
|
|
|
|
Status = AcpiHwRegisterRead (ACPI_MTX_DO_NOT_LOCK,
|
|
ACPI_REGISTER_PM2_CONTROL, &RegisterValue);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_IO, "PM2 control: Read %X from %8.8X%8.8X\n",
|
|
RegisterValue,
|
|
ACPI_HIDWORD (ACPI_GET_ADDRESS (AcpiGbl_FADT->XPm2CntBlk.Address)),
|
|
ACPI_LODWORD (ACPI_GET_ADDRESS (AcpiGbl_FADT->XPm2CntBlk.Address))));
|
|
|
|
ACPI_REGISTER_INSERT_VALUE (RegisterValue, BitRegInfo->BitPosition,
|
|
BitRegInfo->AccessBitMask, Value);
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_IO, "About to write %4.4X to %8.8X%8.8X\n",
|
|
RegisterValue,
|
|
ACPI_HIDWORD (ACPI_GET_ADDRESS (AcpiGbl_FADT->XPm2CntBlk.Address)),
|
|
ACPI_LODWORD (ACPI_GET_ADDRESS (AcpiGbl_FADT->XPm2CntBlk.Address))));
|
|
|
|
Status = AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK,
|
|
ACPI_REGISTER_PM2_CONTROL, (UINT8) (RegisterValue));
|
|
break;
|
|
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
|
|
UnlockAndExit:
|
|
|
|
if (Flags & ACPI_MTX_LOCK)
|
|
{
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_HARDWARE);
|
|
}
|
|
|
|
/* Normalize the value that was read */
|
|
|
|
ACPI_DEBUG_EXEC (RegisterValue = ((RegisterValue & BitRegInfo->AccessBitMask) >> BitRegInfo->BitPosition));
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_IO, "Set bits: %8.8X actual %8.8X register %X\n",
|
|
Value, RegisterValue, BitRegInfo->ParentRegister));
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiHwRegisterRead
|
|
*
|
|
* PARAMETERS: UseLock - Mutex hw access.
|
|
* RegisterId - RegisterID + Offset.
|
|
*
|
|
* RETURN: Value read or written.
|
|
*
|
|
* DESCRIPTION: Acpi register read function. Registers are read at the
|
|
* given offset.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiHwRegisterRead (
|
|
BOOLEAN UseLock,
|
|
UINT32 RegisterId,
|
|
UINT32 *ReturnValue)
|
|
{
|
|
UINT32 Value1 = 0;
|
|
UINT32 Value2 = 0;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("HwRegisterRead");
|
|
|
|
|
|
if (ACPI_MTX_LOCK == UseLock)
|
|
{
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_HARDWARE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
}
|
|
|
|
switch (RegisterId)
|
|
{
|
|
case ACPI_REGISTER_PM1_STATUS: /* 16-bit access */
|
|
|
|
Status = AcpiHwLowLevelRead (16, &Value1, &AcpiGbl_FADT->XPm1aEvtBlk);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/* PM1B is optional */
|
|
|
|
Status = AcpiHwLowLevelRead (16, &Value2, &AcpiGbl_FADT->XPm1bEvtBlk);
|
|
Value1 |= Value2;
|
|
break;
|
|
|
|
|
|
case ACPI_REGISTER_PM1_ENABLE: /* 16-bit access */
|
|
|
|
Status = AcpiHwLowLevelRead (16, &Value1, &AcpiGbl_XPm1aEnable);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/* PM1B is optional */
|
|
|
|
Status = AcpiHwLowLevelRead (16, &Value2, &AcpiGbl_XPm1bEnable);
|
|
Value1 |= Value2;
|
|
break;
|
|
|
|
|
|
case ACPI_REGISTER_PM1_CONTROL: /* 16-bit access */
|
|
|
|
Status = AcpiHwLowLevelRead (16, &Value1, &AcpiGbl_FADT->XPm1aCntBlk);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
Status = AcpiHwLowLevelRead (16, &Value2, &AcpiGbl_FADT->XPm1bCntBlk);
|
|
Value1 |= Value2;
|
|
break;
|
|
|
|
|
|
case ACPI_REGISTER_PM2_CONTROL: /* 8-bit access */
|
|
|
|
Status = AcpiHwLowLevelRead (8, &Value1, &AcpiGbl_FADT->XPm2CntBlk);
|
|
break;
|
|
|
|
|
|
case ACPI_REGISTER_PM_TIMER: /* 32-bit access */
|
|
|
|
Status = AcpiHwLowLevelRead (32, &Value1, &AcpiGbl_FADT->XPmTmrBlk);
|
|
break;
|
|
|
|
case ACPI_REGISTER_SMI_COMMAND_BLOCK: /* 8-bit access */
|
|
|
|
Status = AcpiOsReadPort (AcpiGbl_FADT->SmiCmd, &Value1, 8);
|
|
break;
|
|
|
|
default:
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown Register ID: %X\n", RegisterId));
|
|
Status = AE_BAD_PARAMETER;
|
|
break;
|
|
}
|
|
|
|
UnlockAndExit:
|
|
if (ACPI_MTX_LOCK == UseLock)
|
|
{
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_HARDWARE);
|
|
}
|
|
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
*ReturnValue = Value1;
|
|
}
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiHwRegisterWrite
|
|
*
|
|
* PARAMETERS: UseLock - Mutex hw access.
|
|
* RegisterId - RegisterID + Offset.
|
|
*
|
|
* RETURN: Value read or written.
|
|
*
|
|
* DESCRIPTION: Acpi register Write function. Registers are written at the
|
|
* given offset.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiHwRegisterWrite (
|
|
BOOLEAN UseLock,
|
|
UINT32 RegisterId,
|
|
UINT32 Value)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("HwRegisterWrite");
|
|
|
|
|
|
if (ACPI_MTX_LOCK == UseLock)
|
|
{
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_HARDWARE);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
}
|
|
|
|
switch (RegisterId)
|
|
{
|
|
case ACPI_REGISTER_PM1_STATUS: /* 16-bit access */
|
|
|
|
Status = AcpiHwLowLevelWrite (16, Value, &AcpiGbl_FADT->XPm1aEvtBlk);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/* PM1B is optional */
|
|
|
|
Status = AcpiHwLowLevelWrite (16, Value, &AcpiGbl_FADT->XPm1bEvtBlk);
|
|
break;
|
|
|
|
|
|
case ACPI_REGISTER_PM1_ENABLE: /* 16-bit access*/
|
|
|
|
Status = AcpiHwLowLevelWrite (16, Value, &AcpiGbl_XPm1aEnable);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/* PM1B is optional */
|
|
|
|
Status = AcpiHwLowLevelWrite (16, Value, &AcpiGbl_XPm1bEnable);
|
|
break;
|
|
|
|
|
|
case ACPI_REGISTER_PM1_CONTROL: /* 16-bit access */
|
|
|
|
Status = AcpiHwLowLevelWrite (16, Value, &AcpiGbl_FADT->XPm1aCntBlk);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
Status = AcpiHwLowLevelWrite (16, Value, &AcpiGbl_FADT->XPm1bCntBlk);
|
|
break;
|
|
|
|
|
|
case ACPI_REGISTER_PM1A_CONTROL: /* 16-bit access */
|
|
|
|
Status = AcpiHwLowLevelWrite (16, Value, &AcpiGbl_FADT->XPm1aCntBlk);
|
|
break;
|
|
|
|
|
|
case ACPI_REGISTER_PM1B_CONTROL: /* 16-bit access */
|
|
|
|
Status = AcpiHwLowLevelWrite (16, Value, &AcpiGbl_FADT->XPm1bCntBlk);
|
|
break;
|
|
|
|
|
|
case ACPI_REGISTER_PM2_CONTROL: /* 8-bit access */
|
|
|
|
Status = AcpiHwLowLevelWrite (8, Value, &AcpiGbl_FADT->XPm2CntBlk);
|
|
break;
|
|
|
|
|
|
case ACPI_REGISTER_PM_TIMER: /* 32-bit access */
|
|
|
|
Status = AcpiHwLowLevelWrite (32, Value, &AcpiGbl_FADT->XPmTmrBlk);
|
|
break;
|
|
|
|
|
|
case ACPI_REGISTER_SMI_COMMAND_BLOCK: /* 8-bit access */
|
|
|
|
/* SMI_CMD is currently always in IO space */
|
|
|
|
Status = AcpiOsWritePort (AcpiGbl_FADT->SmiCmd, Value, 8);
|
|
break;
|
|
|
|
|
|
default:
|
|
Status = AE_BAD_PARAMETER;
|
|
break;
|
|
}
|
|
|
|
UnlockAndExit:
|
|
if (ACPI_MTX_LOCK == UseLock)
|
|
{
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_HARDWARE);
|
|
}
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiHwLowLevelRead
|
|
*
|
|
* PARAMETERS: Width - 8, 16, or 32
|
|
* Value - Where the value is returned
|
|
* Register - GAS register structure
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Read from either memory, IO, or PCI config space.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiHwLowLevelRead (
|
|
UINT32 Width,
|
|
UINT32 *Value,
|
|
ACPI_GENERIC_ADDRESS *Reg)
|
|
{
|
|
ACPI_PCI_ID PciId;
|
|
UINT16 PciRegister;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_NAME ("HwLowLevelRead");
|
|
|
|
|
|
/*
|
|
* Must have a valid pointer to a GAS structure, and
|
|
* a non-zero address within. However, don't return an error
|
|
* because the PM1A/B code must not fail if B isn't present.
|
|
*/
|
|
if ((!Reg) ||
|
|
(!ACPI_VALID_ADDRESS (Reg->Address)))
|
|
{
|
|
return (AE_OK);
|
|
}
|
|
*Value = 0;
|
|
|
|
/*
|
|
* Three address spaces supported:
|
|
* Memory, Io, or PCI config.
|
|
*/
|
|
switch (Reg->AddressSpaceId)
|
|
{
|
|
case ACPI_ADR_SPACE_SYSTEM_MEMORY:
|
|
|
|
Status = AcpiOsReadMemory (
|
|
(ACPI_PHYSICAL_ADDRESS) ACPI_GET_ADDRESS (Reg->Address),
|
|
Value, Width);
|
|
break;
|
|
|
|
|
|
case ACPI_ADR_SPACE_SYSTEM_IO:
|
|
|
|
Status = AcpiOsReadPort ((ACPI_IO_ADDRESS) ACPI_GET_ADDRESS (Reg->Address),
|
|
Value, Width);
|
|
break;
|
|
|
|
|
|
case ACPI_ADR_SPACE_PCI_CONFIG:
|
|
|
|
PciId.Segment = 0;
|
|
PciId.Bus = 0;
|
|
PciId.Device = ACPI_PCI_DEVICE (ACPI_GET_ADDRESS (Reg->Address));
|
|
PciId.Function = ACPI_PCI_FUNCTION (ACPI_GET_ADDRESS (Reg->Address));
|
|
PciRegister = (UINT16) ACPI_PCI_REGISTER (ACPI_GET_ADDRESS (Reg->Address));
|
|
|
|
Status = AcpiOsReadPciConfiguration (&PciId, PciRegister,
|
|
Value, Width);
|
|
break;
|
|
|
|
|
|
default:
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
|
|
"Unsupported address space: %X\n", Reg->AddressSpaceId));
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_IO, "Read: %8.8X width %2d from %8.8X%8.8X (%s)\n",
|
|
*Value, Width,
|
|
ACPI_HIDWORD (ACPI_GET_ADDRESS (Reg->Address)),
|
|
ACPI_LODWORD (ACPI_GET_ADDRESS (Reg->Address)),
|
|
AcpiUtGetRegionName (Reg->AddressSpaceId)));
|
|
|
|
return (Status);
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiHwLowLevelWrite
|
|
*
|
|
* PARAMETERS: Width - 8, 16, or 32
|
|
* Value - To be written
|
|
* Register - GAS register structure
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Write to either memory, IO, or PCI config space.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiHwLowLevelWrite (
|
|
UINT32 Width,
|
|
UINT32 Value,
|
|
ACPI_GENERIC_ADDRESS *Reg)
|
|
{
|
|
ACPI_PCI_ID PciId;
|
|
UINT16 PciRegister;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_NAME ("HwLowLevelWrite");
|
|
|
|
|
|
/*
|
|
* Must have a valid pointer to a GAS structure, and
|
|
* a non-zero address within. However, don't return an error
|
|
* because the PM1A/B code must not fail if B isn't present.
|
|
*/
|
|
if ((!Reg) ||
|
|
(!ACPI_VALID_ADDRESS (Reg->Address)))
|
|
{
|
|
return (AE_OK);
|
|
}
|
|
/*
|
|
* Three address spaces supported:
|
|
* Memory, Io, or PCI config.
|
|
*/
|
|
switch (Reg->AddressSpaceId)
|
|
{
|
|
case ACPI_ADR_SPACE_SYSTEM_MEMORY:
|
|
|
|
Status = AcpiOsWriteMemory (
|
|
(ACPI_PHYSICAL_ADDRESS) ACPI_GET_ADDRESS (Reg->Address),
|
|
Value, Width);
|
|
break;
|
|
|
|
|
|
case ACPI_ADR_SPACE_SYSTEM_IO:
|
|
|
|
Status = AcpiOsWritePort ((ACPI_IO_ADDRESS) ACPI_GET_ADDRESS (Reg->Address),
|
|
Value, Width);
|
|
break;
|
|
|
|
|
|
case ACPI_ADR_SPACE_PCI_CONFIG:
|
|
|
|
PciId.Segment = 0;
|
|
PciId.Bus = 0;
|
|
PciId.Device = ACPI_PCI_DEVICE (ACPI_GET_ADDRESS (Reg->Address));
|
|
PciId.Function = ACPI_PCI_FUNCTION (ACPI_GET_ADDRESS (Reg->Address));
|
|
PciRegister = (UINT16) ACPI_PCI_REGISTER (ACPI_GET_ADDRESS (Reg->Address));
|
|
|
|
Status = AcpiOsWritePciConfiguration (&PciId, PciRegister,
|
|
(ACPI_INTEGER) Value, Width);
|
|
break;
|
|
|
|
|
|
default:
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
|
|
"Unsupported address space: %X\n", Reg->AddressSpaceId));
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_IO, "Wrote: %8.8X width %2d to %8.8X%8.8X (%s)\n",
|
|
Value, Width,
|
|
ACPI_HIDWORD (ACPI_GET_ADDRESS (Reg->Address)),
|
|
ACPI_LODWORD (ACPI_GET_ADDRESS (Reg->Address)),
|
|
AcpiUtGetRegionName (Reg->AddressSpaceId)));
|
|
|
|
return (Status);
|
|
}
|