static UINT32
AcpiEvFixedEventDispatch (
UINT32 Event)
{
ACPI_FUNCTION_ENTRY ();
/* Clear the status bit */
(void) AcpiSetRegister (AcpiGbl_FixedEventInfo[Event].StatusRegisterId,
1, ACPI_MTX_DO_NOT_LOCK);
/*
* Make sure we've got a handler. If not, report an error.
* The event is disabled to prevent further interrupts.
*/
if (NULL == AcpiGbl_FixedEventHandlers[Event].Handler)
{
(void) AcpiSetRegister (AcpiGbl_FixedEventInfo[Event].EnableRegisterId,
0, ACPI_MTX_DO_NOT_LOCK);
ACPI_ERROR ((AE_INFO,
"No installed handler for fixed event [%08X]",
Event));
return (ACPI_INTERRUPT_NOT_HANDLED);
}
/* Invoke the Fixed Event handler */
return ((AcpiGbl_FixedEventHandlers[Event].Handler)(
AcpiGbl_FixedEventHandlers[Event].Context));
}
static ACPI_STATUS
AcpiEvFixedEventInitialize (
void)
{
ACPI_NATIVE_UINT i;
ACPI_STATUS Status;
/*
* Initialize the structure that keeps track of fixed event handlers
* and enable the fixed events.
*/
for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++)
{
AcpiGbl_FixedEventHandlers[i].Handler = NULL;
AcpiGbl_FixedEventHandlers[i].Context = NULL;
/* Enable the fixed event */
if (AcpiGbl_FixedEventInfo[i].EnableRegisterId != 0xFF)
{
Status = AcpiSetRegister (
AcpiGbl_FixedEventInfo[i].EnableRegisterId,
0, ACPI_MTX_LOCK);
if (ACPI_FAILURE (Status))
{
return (Status);
}
}
}
return (AE_OK);
}
ACPI_STATUS
AcpiClearEvent (
UINT32 Event,
UINT32 Type)
{
ACPI_STATUS Status = AE_OK;
ACPI_GPE_EVENT_INFO *GpeEventInfo;
ACPI_FUNCTION_TRACE ("AcpiClearEvent");
/* The Type must be either Fixed Event or GPE */
switch (Type)
{
case ACPI_EVENT_FIXED:
/* Decode the Fixed Event */
if (Event > ACPI_EVENT_MAX)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/*
* Clear the requested fixed event (By writing a one to the
* status register bit)
*/
Status = AcpiSetRegister (AcpiGbl_FixedEventInfo[Event].StatusRegisterId,
1, ACPI_MTX_LOCK);
break;
case ACPI_EVENT_GPE:
/* Ensure that we have a valid GPE number */
GpeEventInfo = AcpiEvGetGpeEventInfo (Event);
if (!GpeEventInfo)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
Status = AcpiHwClearGpe (GpeEventInfo);
break;
default:
Status = AE_BAD_PARAMETER;
}
return_ACPI_STATUS (Status);
}
static ACPI_STATUS
enter_s4_with_bios(void)
{
ACPI_OBJECT_LIST ArgList;
ACPI_OBJECT Arg;
u_long ef;
UINT32 ret;
ACPI_STATUS status;
/* run the _PTS and _GTS methods */
ACPI_MEMSET(&ArgList, 0, sizeof(ArgList));
ArgList.Count = 1;
ArgList.Pointer = &Arg;
ACPI_MEMSET(&Arg, 0, sizeof(Arg));
Arg.Type = ACPI_TYPE_INTEGER;
Arg.Integer.Value = ACPI_STATE_S4;
AcpiEvaluateObject(NULL, "\\_PTS", &ArgList, NULL);
AcpiEvaluateObject(NULL, "\\_GTS", &ArgList, NULL);
/* clear wake status */
AcpiSetRegister(ACPI_BITREG_WAKE_STATUS, 1, ACPI_MTX_LOCK);
ef = read_eflags();
disable_intr();
AcpiHwDisableNonWakeupGpes();
/* flush caches */
ACPI_FLUSH_CPU_CACHE();
/*
* write the value to command port and wait until we enter sleep state
*/
do {
AcpiOsStall(1000000);
AcpiOsWritePort(AcpiGbl_FADT->SmiCmd,
AcpiGbl_FADT->S4BiosReq, 8);
status = AcpiGetRegister(ACPI_BITREG_WAKE_STATUS,
&ret, ACPI_MTX_LOCK);
if (ACPI_FAILURE(status))
break;
} while (!ret);
AcpiHwEnableNonWakeupGpes();
write_eflags(ef);
return (AE_OK);
}
ACPI_STATUS
AcpiEvReleaseGlobalLock (
void)
{
BOOLEAN Pending = FALSE;
ACPI_STATUS Status = AE_OK;
ACPI_FUNCTION_TRACE (EvReleaseGlobalLock);
/* Lock must be already acquired */
if (!AcpiGbl_GlobalLockAcquired)
{
ACPI_WARNING ((AE_INFO,
"Cannot release the ACPI Global Lock, it has not been acquired"));
return_ACPI_STATUS (AE_NOT_ACQUIRED);
}
if (AcpiGbl_GlobalLockPresent)
{
/* Allow any thread to release the lock */
ACPI_RELEASE_GLOBAL_LOCK (Facs, Pending);
/*
* If the pending bit was set, we must write GBL_RLS to the control
* register
*/
if (Pending)
{
Status = AcpiSetRegister (
ACPI_BITREG_GLOBAL_LOCK_RELEASE, 1);
}
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Released hardware Global Lock\n"));
}
AcpiGbl_GlobalLockAcquired = FALSE;
/* Release the local GL mutex */
AcpiOsReleaseMutex (AcpiGbl_GlobalLockMutex->Mutex.OsMutex);
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiDisableEvent (
UINT32 Event,
UINT32 Type,
UINT32 Flags)
{
ACPI_STATUS Status = AE_OK;
UINT32 Value;
ACPI_GPE_EVENT_INFO *GpeEventInfo;
ACPI_FUNCTION_TRACE ("AcpiDisableEvent");
/* The Type must be either Fixed Event or GPE */
switch (Type)
{
case ACPI_EVENT_FIXED:
/* Decode the Fixed Event */
if (Event > ACPI_EVENT_MAX)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/*
* Disable the requested fixed event (by writing a zero to the
* enable register bit)
*/
Status = AcpiSetRegister (AcpiGbl_FixedEventInfo[Event].EnableRegisterId,
0, ACPI_MTX_LOCK);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
Status = AcpiGetRegister (AcpiGbl_FixedEventInfo[Event].EnableRegisterId,
&Value, ACPI_MTX_LOCK);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
if (Value != 0)
{
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
"Could not disable %s events\n", AcpiUtGetEventName (Event)));
return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE);
}
break;
case ACPI_EVENT_GPE:
/* Ensure that we have a valid GPE number */
GpeEventInfo = AcpiEvGetGpeEventInfo (Event);
if (!GpeEventInfo)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/*
* Only disable the requested GPE number for wake if specified.
* Otherwise, turn it totally off
*/
if (Flags & ACPI_EVENT_WAKE_DISABLE)
{
AcpiHwDisableGpeForWakeup (GpeEventInfo);
}
else
{
Status = AcpiHwDisableGpe (GpeEventInfo);
}
break;
default:
Status = AE_BAD_PARAMETER;
}
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiEnableEvent (
UINT32 Event,
UINT32 Type,
UINT32 Flags)
{
ACPI_STATUS Status = AE_OK;
UINT32 Value;
ACPI_GPE_EVENT_INFO *GpeEventInfo;
ACPI_FUNCTION_TRACE ("AcpiEnableEvent");
/* The Type must be either Fixed Event or GPE */
switch (Type)
{
case ACPI_EVENT_FIXED:
/* Decode the Fixed Event */
if (Event > ACPI_EVENT_MAX)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/*
* Enable the requested fixed event (by writing a one to the
* enable register bit)
*/
Status = AcpiSetRegister (AcpiGbl_FixedEventInfo[Event].EnableRegisterId,
1, ACPI_MTX_LOCK);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Make sure that the hardware responded */
Status = AcpiGetRegister (AcpiGbl_FixedEventInfo[Event].EnableRegisterId,
&Value, ACPI_MTX_LOCK);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
if (Value != 1)
{
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
"Could not enable %s event\n", AcpiUtGetEventName (Event)));
return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE);
}
break;
case ACPI_EVENT_GPE:
/* Ensure that we have a valid GPE number */
GpeEventInfo = AcpiEvGetGpeEventInfo (Event);
if (!GpeEventInfo)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* Enable the requested GPE number */
Status = AcpiHwEnableGpe (GpeEventInfo);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
if (Flags & ACPI_EVENT_WAKE_ENABLE)
{
AcpiHwEnableGpeForWakeup (GpeEventInfo);
}
break;
default:
Status = AE_BAD_PARAMETER;
}
return_ACPI_STATUS (Status);
}
