exsystem.c File Reference

#include "acpi.h"
#include "accommon.h"
#include "acinterp.h"

Include dependency graph for exsystem.c:

Go to the source code of this file.

Macros
#define	_COMPONENT   ACPI_EXECUTER

Functions
ACPI_STATUS	AcpiExSystemWaitSemaphore (ACPI_SEMAPHORE Semaphore, UINT16 Timeout)
ACPI_STATUS	AcpiExSystemWaitMutex (ACPI_MUTEX Mutex, UINT16 Timeout)
ACPI_STATUS	AcpiExSystemDoStall (UINT32 HowLongUs)
ACPI_STATUS	AcpiExSystemDoSleep (UINT64 HowLongMs)
ACPI_STATUS	AcpiExSystemSignalEvent (ACPI_OPERAND_OBJECT *ObjDesc)
ACPI_STATUS	AcpiExSystemWaitEvent (ACPI_OPERAND_OBJECT *TimeDesc, ACPI_OPERAND_OBJECT *ObjDesc)
ACPI_STATUS	AcpiExSystemResetEvent (ACPI_OPERAND_OBJECT *ObjDesc)

Macro Definition Documentation

_COMPONENT

#define _COMPONENT   ACPI_EXECUTER

Definition at line 48 of file exsystem.c.

Function Documentation

AcpiExSystemDoSleep()

ACPI_STATUS AcpiExSystemDoSleep

(

UINT64

HowLongMs

)

Definition at line 223 of file exsystem.c.

{
    ACPI_FUNCTION_ENTRY ();
 
 
    /* Since this thread will sleep, we must release the interpreter */
 
    AcpiExExitInterpreter ();
 
    /*
     * For compatibility with other ACPI implementations and to prevent
     * accidental deep sleeps, limit the sleep time to something reasonable.
     */
    if (HowLongMs > ACPI_MAX_SLEEP)
    {
        HowLongMs = ACPI_MAX_SLEEP;
    }
 
    AcpiOsSleep (HowLongMs);
 
    /* And now we must get the interpreter again */
 
    AcpiExEnterInterpreter ();
    return (AE_OK);
}

Referenced by AcpiExOpcode_1A_0T_0R().

AcpiExSystemDoStall()

ACPI_STATUS AcpiExSystemDoStall

(

UINT32

HowLongUs

)

Definition at line 174 of file exsystem.c.

{
    ACPI_STATUS             Status = AE_OK;
 
 
    ACPI_FUNCTION_ENTRY ();
 
 
    if (HowLongUs > 255)
    {
        /*
         * Longer than 255 microseconds, this is an error
         *
         * (ACPI specifies 100 usec as max, but this gives some slack in
         * order to support existing BIOSs)
         */
        ACPI_ERROR ((AE_INFO,
            "Time parameter is too large (%u)", HowLongUs));
        Status = AE_AML_OPERAND_VALUE;
    }
    else
    {
        if (HowLongUs > 100)
    {
            ACPI_WARNING ((AE_INFO,
                "Time parameter %u us > 100 us violating ACPI spec, please fix the firmware.", HowLongUs));
    }
        AcpiOsStall (HowLongUs);
    }
 
    return (Status);
}

Referenced by AcpiExOpcode_1A_0T_0R().

AcpiExSystemResetEvent()

ACPI_STATUS AcpiExSystemResetEvent

(

ACPI_OPERAND_OBJECT *

ObjDesc

)

Definition at line 332 of file exsystem.c.

{
    ACPI_STATUS             Status = AE_OK;
    ACPI_SEMAPHORE          TempSemaphore;
 
 
    ACPI_FUNCTION_ENTRY ();
 
 
    /*
     * We are going to simply delete the existing semaphore and
     * create a new one!
     */
    Status = AcpiOsCreateSemaphore (ACPI_NO_UNIT_LIMIT, 0, &TempSemaphore);
    if (ACPI_SUCCESS (Status))
    {
        (void) AcpiOsDeleteSemaphore (ObjDesc->Event.OsSemaphore);
        ObjDesc->Event.OsSemaphore = TempSemaphore;
    }
 
    return (Status);
}

Referenced by AcpiExOpcode_1A_0T_0R().

AcpiExSystemSignalEvent()

ACPI_STATUS AcpiExSystemSignalEvent

(

ACPI_OPERAND_OBJECT *

ObjDesc

)

Definition at line 265 of file exsystem.c.

{
    ACPI_STATUS             Status = AE_OK;
 
 
    ACPI_FUNCTION_TRACE (ExSystemSignalEvent);
 
 
    if (ObjDesc)
    {
        Status = AcpiOsSignalSemaphore (ObjDesc->Event.OsSemaphore, 1);
    }
 
    return_ACPI_STATUS (Status);
}

Referenced by AcpiExOpcode_1A_0T_0R().

AcpiExSystemWaitEvent()

ACPI_STATUS AcpiExSystemWaitEvent	(	ACPI_OPERAND_OBJECT *	TimeDesc,
		ACPI_OPERAND_OBJECT *	ObjDesc
	)

Definition at line 299 of file exsystem.c.

{
    ACPI_STATUS             Status = AE_OK;
 
 
    ACPI_FUNCTION_TRACE (ExSystemWaitEvent);
 
 
    if (ObjDesc)
    {
        Status = AcpiExSystemWaitSemaphore (ObjDesc->Event.OsSemaphore,
            (UINT16) TimeDesc->Integer.Value);
    }
 
    return_ACPI_STATUS (Status);
}

Referenced by AcpiExOpcode_2A_0T_1R().

AcpiExSystemWaitMutex()

ACPI_STATUS AcpiExSystemWaitMutex	(	ACPI_MUTEX	Mutex,
		UINT16	Timeout
	)

Definition at line 120 of file exsystem.c.

{
    ACPI_STATUS             Status;
 
 
    ACPI_FUNCTION_TRACE (ExSystemWaitMutex);
 
 
    Status = AcpiOsAcquireMutex (Mutex, ACPI_DO_NOT_WAIT);
    if (ACPI_SUCCESS (Status))
    {
        return_ACPI_STATUS (Status);
    }
 
    if (Status == AE_TIME)
    {
        /* We must wait, so unlock the interpreter */
 
        AcpiExExitInterpreter ();
        Status = AcpiOsAcquireMutex (Mutex, Timeout);
 
        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
            "*** Thread awake after blocking, %s\n",
            AcpiFormatException (Status)));
 
        /* Reacquire the interpreter */
 
        AcpiExEnterInterpreter ();
    }
 
    return_ACPI_STATUS (Status);
}

Referenced by AcpiDsBeginMethodExecution(), AcpiEvAcquireGlobalLock(), and AcpiExAcquireMutexObject().

AcpiExSystemWaitSemaphore()

ACPI_STATUS AcpiExSystemWaitSemaphore	(	ACPI_SEMAPHORE	Semaphore,
		UINT16	Timeout
	)

Definition at line 68 of file exsystem.c.

{
    ACPI_STATUS             Status;
 
 
    ACPI_FUNCTION_TRACE (ExSystemWaitSemaphore);
 
 
    Status = AcpiOsWaitSemaphore (Semaphore, 1, ACPI_DO_NOT_WAIT);
    if (ACPI_SUCCESS (Status))
    {
        return_ACPI_STATUS (Status);
    }
 
    if (Status == AE_TIME)
    {
        /* We must wait, so unlock the interpreter */
 
        AcpiExExitInterpreter ();
        Status = AcpiOsWaitSemaphore (Semaphore, 1, Timeout);
 
        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
            "*** Thread awake after blocking, %s\n",
            AcpiFormatException (Status)));
 
        /* Reacquire the interpreter */
 
        AcpiExEnterInterpreter ();
    }
 
    return_ACPI_STATUS (Status);
}

Referenced by AcpiEvAcquireGlobalLock(), and AcpiExSystemWaitEvent().