evsci.c File Reference

#include "acpi.h"
#include "accommon.h"
#include "acevents.h"

Include dependency graph for evsci.c:

Go to the source code of this file.

Macros
#define	_COMPONENT   ACPI_EVENTS

Functions
static UINT32 ACPI_SYSTEM_XFACE	AcpiEvSciXruptHandler (void *Context)
UINT32	AcpiEvSciDispatch (void)
UINT32 ACPI_SYSTEM_XFACE	AcpiEvGpeXruptHandler (void *Context)
UINT32	AcpiEvInstallSciHandler (void)
ACPI_STATUS	AcpiEvRemoveAllSciHandlers (void)

Macro Definition Documentation

_COMPONENT

#define _COMPONENT   ACPI_EVENTS

Definition at line 50 of file evsci.c.

Function Documentation

AcpiEvGpeXruptHandler()

UINT32 ACPI_SYSTEM_XFACE AcpiEvGpeXruptHandler

(

void *

Context

)

Definition at line 176 of file evsci.c.

{
    ACPI_GPE_XRUPT_INFO     *GpeXruptList = Context;
    UINT32                  InterruptHandled = ACPI_INTERRUPT_NOT_HANDLED;


    ACPI_FUNCTION_TRACE (EvGpeXruptHandler);


    /*
     * We are guaranteed by the ACPICA initialization/shutdown code that
     * if this interrupt handler is installed, ACPI is enabled.
     */

    /* GPEs: Check for and dispatch any GPEs that have occurred */

    InterruptHandled |= AcpiEvGpeDetect (GpeXruptList);
    return_UINT32 (InterruptHandled);
}

Referenced by AcpiEvDeleteGpeXrupt(), and AcpiEvGetGpeXruptBlock().

AcpiEvInstallSciHandler()

UINT32 AcpiEvInstallSciHandler

(

void

)

Definition at line 211 of file evsci.c.

{
    UINT32                  Status = AE_OK;


    ACPI_FUNCTION_TRACE (EvInstallSciHandler);


    Status = AcpiOsInstallInterruptHandler ((UINT32) AcpiGbl_FADT.SciInterrupt,
        AcpiEvSciXruptHandler, AcpiGbl_GpeXruptListHead);
    return_ACPI_STATUS (Status);
}

Referenced by AcpiEvInstallXruptHandlers().

AcpiEvRemoveAllSciHandlers()

ACPI_STATUS AcpiEvRemoveAllSciHandlers

(

void

)

Definition at line 246 of file evsci.c.

{
    ACPI_SCI_HANDLER_INFO   *SciHandler;
    ACPI_CPU_FLAGS          Flags;
    ACPI_STATUS             Status;


    ACPI_FUNCTION_TRACE (EvRemoveAllSciHandlers);


    /* Just let the OS remove the handler and disable the level */

    Status = AcpiOsRemoveInterruptHandler ((UINT32) AcpiGbl_FADT.SciInterrupt,
        AcpiEvSciXruptHandler);

    if (!AcpiGbl_SciHandlerList)
    {
        return (Status);
    }

    Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);

    /* Free all host-installed SCI handlers */

    while (AcpiGbl_SciHandlerList)
    {
        SciHandler = AcpiGbl_SciHandlerList;
        AcpiGbl_SciHandlerList = SciHandler->Next;
        ACPI_FREE (SciHandler);
    }

    AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
    return_ACPI_STATUS (Status);
}

Referenced by AcpiEvTerminate().

AcpiEvSciDispatch()

UINT32 AcpiEvSciDispatch

(

void

)

Definition at line 75 of file evsci.c.

{
    ACPI_SCI_HANDLER_INFO   *SciHandler;
    ACPI_CPU_FLAGS          Flags;
    UINT32                  IntStatus = ACPI_INTERRUPT_NOT_HANDLED;


    ACPI_FUNCTION_NAME (EvSciDispatch);


    /* Are there any host-installed SCI handlers? */

    if (!AcpiGbl_SciHandlerList)
    {
        return (IntStatus);
    }

    Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);

    /* Invoke all host-installed SCI handlers */

    SciHandler = AcpiGbl_SciHandlerList;
    while (SciHandler)
    {
        /* Invoke the installed handler (at interrupt level) */

        IntStatus |= SciHandler->Address (
            SciHandler->Context);

        SciHandler = SciHandler->Next;
    }

    AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
    return (IntStatus);
}

Referenced by AcpiEvSciXruptHandler().

AcpiEvSciXruptHandler()

static UINT32 ACPI_SYSTEM_XFACE AcpiEvSciXruptHandler ( void *  Context )

static

Definition at line 127 of file evsci.c.

{
    ACPI_GPE_XRUPT_INFO     *GpeXruptList = Context;
    UINT32                  InterruptHandled = ACPI_INTERRUPT_NOT_HANDLED;


    ACPI_FUNCTION_TRACE (EvSciXruptHandler);


    /*
     * We are guaranteed by the ACPICA initialization/shutdown code that
     * if this interrupt handler is installed, ACPI is enabled.
     */

    /*
     * Fixed Events:
     * Check for and dispatch any Fixed Events that have occurred
     */
    InterruptHandled |= AcpiEvFixedEventDetect ();

    /*
     * General Purpose Events:
     * Check for and dispatch any GPEs that have occurred
     */
    InterruptHandled |= AcpiEvGpeDetect (GpeXruptList);

    /* Invoke all host-installed SCI handlers */

    InterruptHandled |= AcpiEvSciDispatch ();

    AcpiSciCount++;
    return_UINT32 (InterruptHandled);
}

Referenced by AcpiEvInstallSciHandler(), and AcpiEvRemoveAllSciHandlers().