748be15501
is Intel's reference implementation of the core operating-system ACPI support. (This import is on the vendor branch.)
449 lines
14 KiB
C
449 lines
14 KiB
C
/*******************************************************************************
|
|
*
|
|
* Module Name: evsci - System Control Interrupt configuration and
|
|
* legacy to ACPI mode state transition functions
|
|
* $Revision: 60 $
|
|
*
|
|
******************************************************************************/
|
|
|
|
/******************************************************************************
|
|
*
|
|
* 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 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.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
#include "acpi.h"
|
|
#include "acnamesp.h"
|
|
#include "achware.h"
|
|
#include "acevents.h"
|
|
|
|
|
|
#define _COMPONENT EVENT_HANDLING
|
|
MODULE_NAME ("evsci")
|
|
|
|
|
|
/*
|
|
* Elements correspond to counts for TMR, NOT_USED, GBL, PWR_BTN, SLP_BTN, RTC,
|
|
* and GENERAL respectively. These counts are modified by the ACPI interrupt
|
|
* handler.
|
|
*
|
|
* TBD: [Investigate] Note that GENERAL should probably be split out into
|
|
* one element for each bit in the GPE registers
|
|
*/
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvSciHandler
|
|
*
|
|
* PARAMETERS: Context - Calling Context
|
|
*
|
|
* RETURN: Status code indicates whether interrupt was handled.
|
|
*
|
|
* DESCRIPTION: Interrupt handler that will figure out what function or
|
|
* control method to call to deal with a SCI. Installed
|
|
* using BU interrupt support.
|
|
*
|
|
******************************************************************************/
|
|
|
|
UINT32
|
|
AcpiEvSciHandler (void *Context)
|
|
{
|
|
UINT32 InterruptHandled = INTERRUPT_NOT_HANDLED;
|
|
|
|
|
|
FUNCTION_TRACE("EvSciHandler");
|
|
|
|
|
|
/*
|
|
* Make sure that ACPI is enabled by checking SCI_EN. Note that we are
|
|
* required to treat the SCI interrupt as sharable, level, active low.
|
|
*/
|
|
if (!AcpiHwRegisterAccess (ACPI_READ, ACPI_MTX_DO_NOT_LOCK, SCI_EN))
|
|
{
|
|
/* ACPI is not enabled; this interrupt cannot be for us */
|
|
|
|
return_VALUE (INTERRUPT_NOT_HANDLED);
|
|
}
|
|
|
|
/*
|
|
* Fixed AcpiEvents:
|
|
* -------------
|
|
* Check for and dispatch any Fixed AcpiEvents that have occurred
|
|
*/
|
|
InterruptHandled |= AcpiEvFixedEventDetect ();
|
|
|
|
/*
|
|
* GPEs:
|
|
* -----
|
|
* Check for and dispatch any GPEs that have occurred
|
|
*/
|
|
InterruptHandled |= AcpiEvGpeDetect ();
|
|
|
|
return_VALUE (InterruptHandled);
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvInstallSciHandler
|
|
*
|
|
* PARAMETERS: none
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Installs SCI handler.
|
|
*
|
|
******************************************************************************/
|
|
|
|
UINT32
|
|
AcpiEvInstallSciHandler (void)
|
|
{
|
|
UINT32 Except = AE_OK;
|
|
|
|
|
|
FUNCTION_TRACE ("EvInstallSciHandler");
|
|
|
|
|
|
Except = AcpiOsInstallInterruptHandler ((UINT32) AcpiGbl_FACP->SciInt,
|
|
AcpiEvSciHandler,
|
|
NULL);
|
|
|
|
return_ACPI_STATUS (Except);
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
|
|
*
|
|
* FUNCTION: AcpiEvRemoveSciHandler
|
|
*
|
|
* PARAMETERS: none
|
|
*
|
|
* RETURN: E_OK if handler uninstalled OK, E_ERROR if handler was not
|
|
* installed to begin with
|
|
*
|
|
* DESCRIPTION: Restores original status of all fixed event enable bits and
|
|
* removes SCI handler.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiEvRemoveSciHandler (void)
|
|
{
|
|
FUNCTION_TRACE ("EvRemoveSciHandler");
|
|
|
|
#if 0
|
|
/* TBD:[Investigate] Figure this out!! Disable all events first ??? */
|
|
|
|
if (OriginalFixedEnableBitStatus ^ 1 << AcpiEventIndex (TMR_FIXED_EVENT))
|
|
{
|
|
AcpiEventDisableEvent (TMR_FIXED_EVENT);
|
|
}
|
|
|
|
if (OriginalFixedEnableBitStatus ^ 1 << AcpiEventIndex (GBL_FIXED_EVENT))
|
|
{
|
|
AcpiEventDisableEvent (GBL_FIXED_EVENT);
|
|
}
|
|
|
|
if (OriginalFixedEnableBitStatus ^ 1 << AcpiEventIndex (PWR_BTN_FIXED_EVENT))
|
|
{
|
|
AcpiEventDisableEvent (PWR_BTN_FIXED_EVENT);
|
|
}
|
|
|
|
if (OriginalFixedEnableBitStatus ^ 1 << AcpiEventIndex (SLP_BTN_FIXED_EVENT))
|
|
{
|
|
AcpiEventDisableEvent (SLP_BTN_FIXED_EVENT);
|
|
}
|
|
|
|
if (OriginalFixedEnableBitStatus ^ 1 << AcpiEventIndex (RTC_FIXED_EVENT))
|
|
{
|
|
AcpiEventDisableEvent (RTC_FIXED_EVENT);
|
|
}
|
|
|
|
OriginalFixedEnableBitStatus = 0;
|
|
|
|
#endif
|
|
|
|
AcpiOsRemoveInterruptHandler ((UINT32) AcpiGbl_FACP->SciInt,
|
|
AcpiEvSciHandler);
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvSciCount
|
|
*
|
|
* PARAMETERS: Event Event that generated an SCI.
|
|
*
|
|
* RETURN: Number of SCI's for requested event since last time
|
|
* SciOccured() was called for this event.
|
|
*
|
|
* DESCRIPTION: Checks to see if SCI has been generated from requested source
|
|
* since the last time this function was called.
|
|
*
|
|
******************************************************************************/
|
|
|
|
#ifdef ACPI_DEBUG
|
|
|
|
UINT32
|
|
AcpiEvSciCount (
|
|
UINT32 Event)
|
|
{
|
|
UINT32 Count;
|
|
|
|
FUNCTION_TRACE ("EvSciCount");
|
|
|
|
/*
|
|
* Elements correspond to counts for TMR, NOT_USED, GBL,
|
|
* PWR_BTN, SLP_BTN, RTC, and GENERAL respectively.
|
|
*/
|
|
|
|
if (Event >= NUM_FIXED_EVENTS)
|
|
{
|
|
Count = (UINT32) -1;
|
|
}
|
|
else
|
|
{
|
|
Count = AcpiGbl_EventCount[Event];
|
|
}
|
|
|
|
return_VALUE (Count);
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvRestoreAcpiState
|
|
*
|
|
* PARAMETERS: none
|
|
*
|
|
* RETURN: none
|
|
*
|
|
* DESCRIPTION: Restore the original ACPI state of the machine
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiEvRestoreAcpiState (void)
|
|
{
|
|
UINT32 Index;
|
|
|
|
|
|
FUNCTION_TRACE ("EvRestoreAcpiState");
|
|
|
|
|
|
/* Restore the state of the chipset enable bits. */
|
|
|
|
if (AcpiGbl_RestoreAcpiChipset == TRUE)
|
|
{
|
|
/* Restore the fixed events */
|
|
|
|
if (AcpiOsIn16 (AcpiGbl_FACP->Pm1aEvtBlk + 2) !=
|
|
AcpiGbl_Pm1EnableRegisterSave)
|
|
{
|
|
AcpiOsOut16 ((AcpiGbl_FACP->Pm1aEvtBlk + 2),
|
|
AcpiGbl_Pm1EnableRegisterSave);
|
|
}
|
|
|
|
if (AcpiGbl_FACP->Pm1bEvtBlk)
|
|
{
|
|
if (AcpiOsIn16 (AcpiGbl_FACP->Pm1bEvtBlk + 2) !=
|
|
AcpiGbl_Pm1EnableRegisterSave)
|
|
{
|
|
AcpiOsOut16 ((AcpiGbl_FACP->Pm1bEvtBlk + 2),
|
|
AcpiGbl_Pm1EnableRegisterSave);
|
|
}
|
|
}
|
|
|
|
|
|
/* Ensure that all status bits are clear */
|
|
|
|
AcpiHwClearAcpiStatus ();
|
|
|
|
|
|
/* Now restore the GPEs */
|
|
|
|
for (Index = 0; Index < DIV_2 (AcpiGbl_FACP->Gpe0BlkLen); Index++)
|
|
{
|
|
if (AcpiOsIn8 (AcpiGbl_FACP->Gpe0Blk +
|
|
DIV_2 (AcpiGbl_FACP->Gpe0BlkLen)) !=
|
|
AcpiGbl_Gpe0EnableRegisterSave[Index])
|
|
{
|
|
AcpiOsOut8 ((AcpiGbl_FACP->Gpe0Blk +
|
|
DIV_2 (AcpiGbl_FACP->Gpe0BlkLen)),
|
|
AcpiGbl_Gpe0EnableRegisterSave[Index]);
|
|
}
|
|
}
|
|
|
|
if (AcpiGbl_FACP->Gpe1Blk && AcpiGbl_FACP->Gpe1BlkLen)
|
|
{
|
|
for (Index = 0; Index < DIV_2 (AcpiGbl_FACP->Gpe1BlkLen); Index++)
|
|
{
|
|
if (AcpiOsIn8 (AcpiGbl_FACP->Gpe1Blk +
|
|
DIV_2 (AcpiGbl_FACP->Gpe1BlkLen)) !=
|
|
AcpiGbl_Gpe1EnableRegisterSave[Index])
|
|
{
|
|
AcpiOsOut8 ((AcpiGbl_FACP->Gpe1Blk +
|
|
DIV_2 (AcpiGbl_FACP->Gpe1BlkLen)),
|
|
AcpiGbl_Gpe1EnableRegisterSave[Index]);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (AcpiHwGetMode() != AcpiGbl_OriginalMode)
|
|
{
|
|
AcpiHwSetMode (AcpiGbl_OriginalMode);
|
|
}
|
|
}
|
|
|
|
return_VOID;
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvTerminate
|
|
*
|
|
* PARAMETERS: none
|
|
*
|
|
* RETURN: none
|
|
*
|
|
* DESCRIPTION: free memory allocated for table storage.
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiEvTerminate (void)
|
|
{
|
|
|
|
FUNCTION_TRACE ("EvTerminate");
|
|
|
|
|
|
/*
|
|
* Free global tables, etc.
|
|
*/
|
|
|
|
if (AcpiGbl_GpeRegisters)
|
|
{
|
|
AcpiCmFree (AcpiGbl_GpeRegisters);
|
|
}
|
|
|
|
if (AcpiGbl_GpeInfo)
|
|
{
|
|
AcpiCmFree (AcpiGbl_GpeInfo);
|
|
}
|
|
|
|
return_VOID;
|
|
}
|
|
|
|
|