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acpica/source/components/events/evxfevnt.c
aystarik 245944a0e5 Added support for fixed events 
date	2000.06.06.20.50.00;	author rmoore1;	state Exp;
2005-06-29 16:48:08 +00:00

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/******************************************************************************
*
* Module Name: evapievt - External Interfaces, ACPI event disable/enable
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999, 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 prton 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.
*
*****************************************************************************/
#define __EVAPIEVT_C__
#include <acpi.h>
#include <hardware.h>
#include <namesp.h>
#include <events.h>
#include <amlcode.h>
#include <interp.h>
#define _COMPONENT EVENT_HANDLING
MODULE_NAME ("evapievt");
/**************************************************************************
*
* FUNCTION: AcpiEnable
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Ensures that the system control interrupt (SCI) is properly
* configured, disables SCI event sources, installs the SCI
* handler, and transfers the system into ACPI mode.
*
*************************************************************************/
ACPI_STATUS
AcpiEnable (void)
{
ACPI_STATUS Status;
FUNCTION_TRACE ("AcpiEnable");
/* Make sure we've got ACPI tables */
if (!Gbl_DSDT)
{
DEBUG_PRINT (ACPI_WARN, ("No ACPI tables present!\n"));
return_ACPI_STATUS (AE_NO_ACPI_TABLES);
}
/* Make sure the BIOS supports ACPI mode */
if (SYS_MODE_LEGACY == HwGetModeCapabilities())
{
DEBUG_PRINT (ACPI_WARN, ("Only legacy mode supported!\n"));
return_ACPI_STATUS (AE_ERROR);
}
Gbl_OriginalMode = HwGetMode();
/*
* Initialize the Fixed and General Purpose Events prior. This is
* done prior to enabling SCIs to prevent interrupts from occuring
* before handers are installed.
*/
if (ACPI_FAILURE (EvFixedEventInitialize ()))
{
DEBUG_PRINT (ACPI_FATAL, ("Unable to initialize fixed events.\n"));
return_ACPI_STATUS (AE_ERROR);
}
if (ACPI_FAILURE (EvGpeInitialize()))
{
DEBUG_PRINT (ACPI_FATAL, ("Unable to initialize general purpose events.\n"));
return_ACPI_STATUS (AE_ERROR);
}
/* Install the SCI handler */
if (ACPI_FAILURE (EvInstallSciHandler ()))
{
DEBUG_PRINT (ACPI_FATAL, ("Unable to install System Control Interrupt Handler\n"));
return_ACPI_STATUS (AE_ERROR);
}
/* Transition to ACPI mode */
if (AE_OK != HwSetMode (SYS_MODE_ACPI))
{
DEBUG_PRINT (ACPI_FATAL, ("Could not transition to ACPI mode.\n"));
return_ACPI_STATUS (AE_ERROR);
}
DEBUG_PRINT (ACPI_OK, ("Transition to ACPI mode successful\n"));
/* Install handlers for control method GPE handlers (_Lxx, _Exx) */
EvInitGpeControlMethods ();
Status = EvInitGlobalLockHandler ();
return_ACPI_STATUS (Status);
}
/**************************************************************************
*
* FUNCTION: AcpiDisable
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Returns the system to original ACPI/legacy mode, and
* uninstalls the SCI interrupt handler.
*
*************************************************************************/
ACPI_STATUS
AcpiDisable (void)
{
FUNCTION_TRACE ("AcpiDisable");
/* Restore original mode */
if (AE_OK != HwSetMode (Gbl_OriginalMode))
{
DEBUG_PRINT (ACPI_ERROR, ("Unable to transition to original mode"));
return_ACPI_STATUS (AE_ERROR);
}
/* Unload the SCI interrupt handler */
EvRemoveSciHandler ();
EvRestoreAcpiState ();
return_ACPI_STATUS (AE_OK);
}
/******************************************************************************
*
* FUNCTION: AcpiEnableEvent
*
* PARAMETERS: Event - The fixed event or GPE to be enabled
* Type - The type of event
*
* RETURN: Status
*
* DESCRIPTION: Enable an ACPI event (fixed and general purpose)
*
******************************************************************************/
ACPI_STATUS
AcpiEnableEvent (
UINT32 Event,
UINT32 Type)
{
ACPI_STATUS Status = AE_OK;
UINT32 RegisterId;
FUNCTION_TRACE ("AcpiEnableEvent");
/* The Type must be either Fixed Event or GPE */
switch (Type)
{
case EVENT_FIXED:
/* Decode the Fixed Event */
switch (Event)
{
case EVENT_PMTIMER:
RegisterId = TMR_EN;
break;
case EVENT_GLOBAL:
RegisterId = GBL_EN;
break;
case EVENT_POWER_BUTTON:
RegisterId = PWRBTN_EN;
break;
case EVENT_SLEEP_BUTTON:
RegisterId = SLPBTN_EN;
break;
case EVENT_RTC:
RegisterId = RTC_EN;
break;
default:
return_ACPI_STATUS (AE_BAD_PARAMETER);
break;
}
/* Enable the requested fixed event (by writing a one to the enable register bit) */
HwRegisterIO (ACPI_WRITE, TRUE, RegisterId, 1);
break;
case EVENT_GPE:
/* Ensure that we have a valid GPE number */
if ((Event >= NUM_GPE) ||
(Gbl_GpeValid[Event] == GPE_INVALID))
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* Enable the requested GPE number */
HwEnableGpe (Event);
break;
default:
Status = AE_BAD_PARAMETER;
}
return_ACPI_STATUS (Status);
}
/******************************************************************************
*
* FUNCTION: AcpiDisableEvent
*
* PARAMETERS: Event - The fixed event or GPE to be enabled
* Type - The type of event
*
* RETURN: Status
*
* DESCRIPTION: Disable an ACPI event (fixed and general purpose)
*
******************************************************************************/
ACPI_STATUS
AcpiDisableEvent (
UINT32 Event,
UINT32 Type)
{
ACPI_STATUS Status = AE_OK;
UINT32 RegisterId;
FUNCTION_TRACE ("AcpiDisableEvent");
/* The Type must be either Fixed Event or GPE */
switch (Type)
{
case EVENT_FIXED:
/* Decode the Fixed Event */
switch (Event)
{
case EVENT_PMTIMER:
RegisterId = TMR_EN;
break;
case EVENT_GLOBAL:
RegisterId = GBL_EN;
break;
case EVENT_POWER_BUTTON:
RegisterId = PWRBTN_EN;
break;
case EVENT_SLEEP_BUTTON:
RegisterId = SLPBTN_EN;
break;
case EVENT_RTC:
RegisterId = RTC_EN;
break;
default:
return_ACPI_STATUS (AE_BAD_PARAMETER);
break;
}
/* Disable the requested fixed event (by writing a zero to the enable register bit) */
HwRegisterIO (ACPI_WRITE, TRUE, RegisterId, 0);
break;
case EVENT_GPE:
/* Ensure that we have a valid GPE number */
if ((Event >= NUM_GPE) ||
(Gbl_GpeValid[Event] == GPE_INVALID))
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* Disable the requested GPE number */
HwDisableGpe (Event);
break;
default:
Status = AE_BAD_PARAMETER;
}
return_ACPI_STATUS (Status);
}
/******************************************************************************
*
* FUNCTION: AcpiClearEvent
*
* PARAMETERS: Event - The fixed event or GPE to be enabled
* Type - The type of event
*
* RETURN: Status
*
* DESCRIPTION: Clear an ACPI event (fixed and general purpose)
*
******************************************************************************/
ACPI_STATUS
AcpiClearEvent (
UINT32 Event,
UINT32 Type)
{
ACPI_STATUS Status = AE_OK;
UINT32 RegisterId;
FUNCTION_TRACE ("AcpiClearEvent");
/* The Type must be either Fixed Event or GPE */
switch (Type)
{
case EVENT_FIXED:
/* Decode the Fixed Event */
switch (Event)
{
case EVENT_PMTIMER:
RegisterId = TMR_STS;
break;
case EVENT_GLOBAL:
RegisterId = GBL_STS;
break;
case EVENT_POWER_BUTTON:
RegisterId = PWRBTN_STS;
break;
case EVENT_SLEEP_BUTTON:
RegisterId = SLPBTN_STS;
break;
case EVENT_RTC:
RegisterId = RTC_STS;
break;
default:
return_ACPI_STATUS (AE_BAD_PARAMETER);
break;
}
/* Clear the requested fixed event (By writing a one to the status register bit) */
HwRegisterIO (ACPI_WRITE, TRUE, RegisterId, 1);
break;
case EVENT_GPE:
/* Ensure that we have a valid GPE number */
if ((Event >= NUM_GPE) ||
(Gbl_GpeValid[Event] == GPE_INVALID))
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
HwClearGpe (Event);
break;
default:
Status = AE_BAD_PARAMETER;
}
return_ACPI_STATUS (Status);
}
/******************************************************************************
*
* FUNCTION: AcpiGetEventStatus
*
* PARAMETERS: Event - The fixed event or GPE to be enabled
* Type - The type of event
* Status - The current status of the event
*
* RETURN: Status
*
* DESCRIPTION: Computes the current status of the event
*
******************************************************************************/
ACPI_STATUS
AcpiGetEventStatus (
UINT32 Event,
UINT32 Type,
ACPI_EVENT_STATUS *EventStatus)
{
ACPI_STATUS Status = AE_OK;
UINT32 RegisterId;
FUNCTION_TRACE ("AcpiGetEventStatus");
if (!EventStatus)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* The Type must be either Fixed Event or GPE */
switch (Type)
{
case EVENT_FIXED:
/* Decode the Fixed Event */
switch (Event)
{
case EVENT_PMTIMER:
RegisterId = TMR_STS;
break;
case EVENT_GLOBAL:
RegisterId = GBL_STS;
break;
case EVENT_POWER_BUTTON:
RegisterId = PWRBTN_STS;
break;
case EVENT_SLEEP_BUTTON:
RegisterId = SLPBTN_STS;
break;
case EVENT_RTC:
RegisterId = RTC_STS;
break;
default:
return_ACPI_STATUS (AE_BAD_PARAMETER);
break;
}
/* Get the status of the requested fixed event */
*EventStatus = HwRegisterIO (ACPI_READ, TRUE, RegisterId);
break;
case EVENT_GPE:
/* Ensure that we have a valid GPE number */
if ((Event >= NUM_GPE) ||
(Gbl_GpeValid[Event] == GPE_INVALID))
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* Obtain status on the requested GPE number */
HwGetGpeStatus (Event, EventStatus);
break;
default:
Status = AE_BAD_PARAMETER;
}
return_ACPI_STATUS (Status);
}
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